CN102410394B - Female Thread Part, Electric Valve And Manufacturing Method Of The Female Thread Part Used For The Electric Valve - Google Patents
Female Thread Part, Electric Valve And Manufacturing Method Of The Female Thread Part Used For The Electric Valve Download PDFInfo
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- CN102410394B CN102410394B CN201110232586.0A CN201110232586A CN102410394B CN 102410394 B CN102410394 B CN 102410394B CN 201110232586 A CN201110232586 A CN 201110232586A CN 102410394 B CN102410394 B CN 102410394B
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Abstract
The invention provides a female thread component formed in an integral molding of resin. The female thread component includes a female thread part having female threads; and a recess. At least a part of the recess sinks from end parts of the female thread component in a direction of a central shaft of the female threads and has an acting surface in a rotating direction adopting the central shaft as the center. The recess has a spiral inclination surface inclining a round spirally taking the central shaft of the female threads as the center. The acting surface is lower than a thread pitch of the female threads. The recess is adopted as a whole-open fixed limit body, thereby forming an electric valve. The electric valve includes a valve body having a valve base; the female thread component installed in the valve body; a motor having a rotor and a stator; a valve rod having a whole-open moving limit body abutting against the whole-open fixed limit body and threaded with the female threads of the female thread components and driven by the rotor in a rotary manner. By adopting the electric valve, the female thread part of the female thread component in the electric valve and a lower end part have no center deviation. Blurs are prevented from appearing and the manufacturing cost of the electric valve is reduced.
Description
Technical field
The present invention relates to a kind of female threaded part, use the manufacture method of the mortor operated valve of this female threaded part and mortor operated valve female threaded part.
Background technique
As the mortor operated valve of the flow control for the refrigerant in cooling cycle system etc., following mortor operated valve is proposed: there is the driving mechanism utilizing the rotation of the rotor of motor spool to be contacted with valve seat, is separated in patent documentation 1, when this valve full cut-off, the upper restriction body being fixed on valve rod frame and the lower restriction body being fixed on guide sleeve collide, and the rotation terminating valve rod moves downward.This mortor operated valve adopts following screw thread disconnected configuration: on standard-sized sheet direction, last solution is except valve rod frame and the screwing togather of guide sleeve of being fixed on valve body, terminates moving upward of valve rod.
But the screw thread disconnected configuration in the standard-sized sheet direction of mortor operated valve described above can not be used for having can not the mortor operated valve of the structure screwed togather of relief valve bridge and guide sleeve.
On the other hand, patent documentation 2 proposes a kind of electric-type control valve, it is by having the valve portion of valve seat and valve body etc. and being positioned at the top in this valve portion and consisting of the stepper motor that the rotation of rotor makes spool and described valve seat separate, and has standard-sized sheet restriction body and the full cut-off restriction body of this valve above the rotor of this electric-type control valve in sealed type housing.
But, in above-mentioned electric-type control valve, the top of rotor is positioned at, so cause that elongated, close restriction body for standard-sized sheet the number of spare parts of the overall length of electric-type control valve increases, the problem such as assembling operation variation, manufacture cost rising of valve because standard-sized sheet closes restriction body.In addition, be set in rotor to this standard-sized sheet be closed restriction body, then owing to arranging installing space, so need the external diameter reducing valve rod frame, thus, be difficult to guarantee the helical spring installing space for exerting a force to spool.Therefore, be difficult to make mortor operated valve miniaturization while the valve port footpath that maintenance is larger.
Therefore, though the applicant propose in patent documentation 3 a kind of number of spare parts few, be easy to assemble miniaturization and also can keep the mortor operated valve in larger valve port footpath.As shown in Figure 9, this mortor operated valve comprises: have two conduits 52, 53 and the valve body 55 of valve seat 54, the housing 56 engaged with valve body 55, be configured at the rotor 57 of the inside of housing 56 and a part for formation motor, be fixed on the peripheral part of housing 56 and drive the stator (not shown) that rotor 57 rotates, by the male thread part (valve rod) 60 that support ring 59 and rotor 57 link into an integrated entity, underpart be fixed on valve body 55 by adapter ring 65 and in be inserted with the female threaded part (valve rod frame) 61 of male thread part 60, and be locked to male thread part 60 underpart and with valve seat close to formations such as the spools 62 that is separated.In addition, Fig. 9 (a) represents sectional view during full cut-off, and Fig. 9 (b) represents sectional view during standard-sized sheet.In addition, Fig. 9 (c) and Figure 10 represents the integrated female threaded part 61 with adapter ring 65.
According to said structure, when closed mortor operated valve 51, under the state of Fig. 9 (b), stator is carried out to the words of unidirectional energising excitation, then rotor 57 rotates to the clockwise direction overlooked, and male thread part 60 also makes its external screw thread 60a and female thread 61a screw togather while rotate decline, and spool 62 is seated at valve seat 54 and makes mortor operated valve 51 close.
When spool 62 is seated at valve seat 54, full cut-off limits under body 59a does not reach full cut-off and limit body 61d, rotor 57 is in the state that can continue to rotate.Rotor 57 continues to rotate to the clockwise direction overlooked, when full cut-off limits body (full cut-off movably limits body) 59a with limit under full cut-off body (full cut-off is fixed and limited body) 61d abut time, the rotation of rotor 57 is forcibly stopped.
In addition, when spool 62 is seated at valve seat 54, the mobile of spool 62 stops, but male thread part 60 continues to decline, and therefore, helical spring 64 is compressed and is pressed on valve seat 54 by spool 62, with the posture tenth skill shown in Fig. 9 (a).
On the other hand, when opening mortor operated valve 51, under the state of Fig. 9 (a), words with above-mentioned side energising excitation are in the opposite direction carried out to stator, then rotor 57 rotates to the counter clockwise direction of overlooking, male thread part 60 also makes its external screw thread 60a and female thread 61a screw togather while rotate rising, and spool 62 is separated with valve seat 54 and mortor operated valve 51 is opened.And rotor 57 continues to rotate, when limit under standard-sized sheet body (standard-sized sheet movably limits body) 67 with standard-sized sheet limits body (standard-sized sheet fixing limits body) 61f abut time, rotor 57 stops the rotation, and spool 62 also stops rising.
As mentioned above, according to mortor operated valve 51, due to be formed with when mortor operated valve 51 standard-sized sheet on female threaded part 61 and full cut-off time two restriction bodies 61d, 61f playing a role, so mortor operated valve 51 miniaturization can be made, and can number of spare parts be reduced, in addition, because be integrally formed two restriction bodies 61d, 61f on female threaded part 61, so two position relationships limiting body 61d, 61f can be made to stablize, improve assembling performance.
Patent documentation 1: Japanese Unexamined Patent Publication 2006-70990 publication
Patent documentation 2: Japanese Patent Publication 6-94910 publication
Patent documentation 3: Japanese Unexamined Patent Publication 2010-169173 publication
But, in the mortor operated valve 51 described in above-mentioned patent documentation 3, as shown in figure 11, to carry out insert molding to adapter ring 65 and using a core 70 (in figure pit part) to manufacture female threaded part 61 and adapter ring 65, then limit body 61f back-off and core 70 can not be rotated.That is, after shaping female threaded part 61, even if rotating core 70, want it to take out downwards, core 70 can not be made to rotate because existence restriction body 61f, can not take out downwards.
Therefore, as shown in figure 12, except patrix 71, beyond counterdie 72, also use two cores 73, 74 (for the formation of the core 73 of female thread 61a, and for the formation of the core 74 in the large diameter tubular portion formed continuously with female thread 61a), after fixing core 73 relative to core 74, be configured in the inside of patrix 71 and counterdie 72, after insert molding is carried out to adapter ring 65, by core 74 and core 73 according to this order, after pulling out by core 74 again rotating core 73 or on one side drawing core 74 while make core 73 take out rotatably, thus, the back-off of restriction body 61f can be avoided and form the internal face of female threaded part 61.But, even if this situation, because the completely the same comparatively difficulty at core 73,74 chien shih center, so there is the female thread 61a of female threaded part 61 and occur off(-)center between the 61c of underpart, the problem of bad phenomenon occurs when integrated with male thread part 60 (with reference to Fig. 9).
In addition, also there are the following problems: once produce gap between core 73,74, will produce burr and need to carry out the removal operation of burr in this part, and the manufacture cost of mortor operated valve 51 rises.Core 74 can be integrated with counterdie 72, but, also can there is the problem identical with the problems referred to above in this case.
Summary of the invention
Therefore, the present invention makes in view of the above problems, its object is to the manufacture method a kind of female threaded part being provided, using the mortor operated valve of this female threaded part and mortor operated valve female threaded part, its female thread at the female threaded part of mortor operated valve etc. and and its cylindrical portion formed continuously between can not generative center misplace, and, can burr be prevented and realize its simplification constructed, can manufacture cost be reduced.
In order to achieve the above object, female threaded part of the present invention has: female threaded portion, and this female threaded portion is formed with female thread; And recess, caving in from the end of this female threaded portion at the central axis direction of described female thread at least partially of this recess, sense of rotation centered by this central shaft has acting surface, this female threaded part is one-body molded by resin, described recess has the helical plane of inclination tilted a week from described acting surface helically centered by the central shaft of female thread, and the height of described acting surface is below the pitch of described female thread.
In addition, female threaded part of the present invention has: female threaded portion, and this female threaded portion is formed with female thread; And recess, the central axis direction at least partially from from the end of this female threaded portion to described female thread of this recess caves in, sense of rotation centered by this central shaft has acting surface, this female threaded part is one-body molded by resin, described recess has centered by the central shaft of female thread from the helical plane of inclination that described acting surface helically tilts, described helical plane of inclination is formed as: when this female threaded part rotates along with the spiral of described female thread, can not interfere in this helical plane of inclination.
In described female threaded part, described helical plane of inclination, during rounding from described acting surface and again arriving described acting surface, has at least one planar surface portion perpendicular to described central shaft.
In addition, in described female threaded part, it is the part of straight line that described helical plane of inclination comprises its unfolded drawing at least partially.
In addition, in described female threaded part, described female threaded portion has the internal diameter cylindrical portion larger than described female thread, and described recess is formed at the bottom of described cylindrical portion.
So, according to the present invention because the inner wall part of a core moulding female threaded part can be used, so can not generative center depart between the female thread and its underpart of this female threaded part, in addition, the generation of burr can be prevented.
In addition, in described female threaded part, described acting surface is movably limit with the standard-sized sheet on the valve rod being arranged on mortor operated valve that standard-sized sheet that body abuts is fixing limits body, and valve rod and the described female thread of this mortor operated valve screw togather.
In addition, in described female threaded part, be also formed with the end of described cylindrical portion opposite side that full cut-off is fixing limits body at described female threaded portion.Female threaded part can be used for mortor operated valve by this structure.
In addition, mortor operated valve of the present invention comprises: the valve body with valve seat; Be installed on the female threaded part as above of this valve body; There is the motor of rotor and stator; And valve rod, the female thread of this valve rod and described female threaded part screws togather and drives rotation by described motor, and has to fix with described standard-sized sheet and limit the standard-sized sheet that body abuts and movably limit body.
In addition, mortor operated valve of the present invention comprises: the valve body with valve seat; Be installed on the female threaded part as above of this valve body; There is the motor of rotor and stator; And valve rod, the female thread of this valve rod and described female threaded part screws togather and drives rotation by described motor, and has to fix with described standard-sized sheet and limit standard-sized sheet that body abuts and movably limit body and can fix with described full cut-off and limit the full cut-off that body abuts and movably limit body.
So, according to mortor operated valve of the present invention, because the inner wall part of a core moulding female threaded part can be used, so can not generative center misplace between the female threaded portion and underpart of the female threaded part of mortor operated valve, in addition, the generation of burr can be prevented, the manufacture cost of mortor operated valve can be reduced.
In addition, the invention still further relates to a kind of manufacture method of described female threaded part of mortor operated valve, this mortor operated valve has: the male thread part rotating along with the rotation of motor rotor, screw togather with the female threaded part that is fixed on valve body, and the spool utilizing the rotation of this male thread part to contact with the valve seat in described valve body, be separated, this female threaded part has: the female threaded portion screwed togather with the outer screw section of described male thread part, cylindrical portion, this cylindrical portion is arranged on the described valve body side of this female threaded portion, and has the diameter cylindrical space larger than the diameter of thread of this female threaded portion, and standard-sized sheet fixing restriction body, in this cylindrical portion, the depression at least partially that restriction body fixed by this standard-sized sheet is arranged at described female threaded portion, when this mortor operated valve standard-sized sheet, the restriction body that this standard-sized sheet is fixed restriction body and the rotation along with described motor rotor and rotated abuts and limits the rotation of the valve opening direction of described male thread part, when this female threaded part shaping, use the counterdie of the described valve body side being used for this female threaded part shaping, for the patrix of the described female threaded portion side of this female threaded part shaping, and for simultaneously shaping described female threaded portion and the core of cylindrical portion with described cylindrical space, this core can limit body interference-free and carries out form removal with described standard-sized sheet is fixing.
So, according to the present invention, because a core moulding female threaded part can be used, so can not generative center misplace between the female threaded portion and underpart of the female threaded part of mortor operated valve, in addition, the generation of burr can also be prevented, the manufacture cost of mortor operated valve can be reduced.
In the manufacture method of the described female threaded part of described mortor operated valve, described standard-sized sheet fixing restriction body has: with the rotation along with described motor rotor and bearing surface that the restriction body that rotates abuts; From the helical plane of inclination that the edge part of this bearing surface tilts gradually to the direction away from described valve body; And being positioned at the circle-shaped internal surface of axis side of described female threaded portion, described core carries out shaping to described bearing surface, helical plane of inclination and circle-shaped internal surface.
In addition, in the manufacture method of the described female threaded part of described mortor operated valve, this female threaded part has the discoideus adapter ring for this female threaded part being fixed on described valve body at the outer surface of described cylindrical portion, clamp this adapter ring with described counterdie and described patrix, insert molding is carried out to this female threaded part.
In sum, the present invention can provide a kind of female threaded part, use the manufacture method of the mortor operated valve of this female threaded part and female threaded part, can not generative center misplace between its female thread at the female threaded part of mortor operated valve and underpart, but also the generation of burr can be prevented, the manufacture cost of mortor operated valve can be reduced.
In addition, the result that acting surface is formed with recess is, because this acting surface only has a face open, other faces (three faces) are supported by female threaded part, so the projection single with use, clava are formed compared with the situation of this acting surface, the intensity of acting surface uprises, and the durability as acting surface improves.
Accompanying drawing explanation
Fig. 1 is the figure of the first mode of execution representing female threaded part of the present invention, and (a) is plan view, and (b) is the A-A line sectional view of (a), and (c) is worm's eye view.
Fig. 2 is the figure of the female threaded part representing Fig. 1, and (a) is plan view, and (b) is worm's eye view.
Fig. 3 is the figure of the female threaded part representing Fig. 1, and (a) is sectional bottom view, and (b) is biopsy cavity marker devices worm's eye view.
Fig. 4 is the figure of the example representing the mould that the manufacture method of female threaded part of the present invention is used, and (a) is that master looks sectional view, and (b) is fragmentary perspective cross sectional view.
Fig. 5 is the fragmentary perspective cross sectional view of the core representing the female threaded part of Fig. 1 and the mould of Fig. 4.
Fig. 6 is the stereogram of the core of the mould representing Fig. 1.
Fig. 7 is the figure of the second mode of execution representing female threaded part of the present invention, and (a) is plan view, and (b) is the B-B line sectional view of (a), and (c) is worm's eye view.
Fig. 8 is the figure of the variation representing helical plane of inclination 1e, is the explanatory drawing using drawing (drawing of core 13) situation launch the unfolded drawing of this helical plane of inclination 1e centered by the central shaft of female thread 1a, that represent helical plane of inclination 1e.
Fig. 9 is the figure of the mortor operated valve that represents that patent documentation 3 is recorded and this mortor operated valve female threaded part used, (a), (b) are when representing each mortor operated valve full cut-off, standard-sized sheet time sectional view, (c) represents female threaded part.
Figure 10 is the figure of the female threaded part representing Fig. 9, and (a) is plan view, and (b) is biopsy cavity marker devices worm's eye view, and (c) is worm's eye view.
Figure 11 is used to illustrate can not the biopsy cavity marker devices sectional view of female threaded part of shaping Fig. 9 with a core.
Figure 12 is the figure of the example representing mould used in the process of the female threaded part of working drawing 9, and (a) mainly looks sectional view, and (b) is fragmentary perspective cross sectional view.
Reference numeral illustrates:
1,1 ' ... female threaded part; 1a ... female thread; 1b ... female threaded portion; 1c ... cylindrical portion; 1d ... body (full cut-off fixing restriction body) is limited under full cut-off; 1e ... helical plane of inclination; 1f, 1f ' ... standard-sized sheet limits body (standard-sized sheet fixing restriction body); 1g ... underpart; 1h ... ridge; 1j ... cylindrical space; 1k ... bearing surface (acting surface); 1m ... circle-shaped internal surface; 1n ... end lower surface; 1x ... par; 1y ... par; 2 ... adapter ring; 11 ... patrix; 11a ... space; 11b ... sprue gate; 12 ... counterdie; 12a ... space; 12b ... accommodation section; 13 ... core; 13a ... outer screw section; 13b ... helical portion; 13c ... planar surface portion; 13d ... upper surface; 13e ... cylindrical portion; 13f ... ridge; 61f ... standard-sized sheet limits body (standard-sized sheet fixing restriction body); 67 ... body (standard-sized sheet movably limits body) is limited under standard-sized sheet.
Embodiment
Below, be described for implementing embodiments of the present invention with reference to accompanying drawing.
Fig. 1 to Fig. 3 represents female threaded part involved in the present invention, this female threaded part (valve rod frame) 1 has the structure roughly the same with the above-mentioned female threaded part 61 shown in Fig. 9 etc. and function, and it comprises: screw thread is provided with the female threaded portion 1b of female thread 1a; Body (full cut-off fixing restriction body) 1d is limited under the full cut-off of the projecting upper surface part at female threaded portion 1b; Cylindrical portion 1c, this cylindrical portion 1c are coaxially formed in one end of female threaded portion 1b and this female threaded portion 1b, and have the diameter cylindrical space 1j larger than the diameter of thread of female thread 1a; And standard-sized sheet limits body (standard-sized sheet fixing restriction body) 1f, this standard-sized sheet limits body 1f to cave in cylindrical space 1j the bottom of the end lower surface 1n, i.e. the cylindrical portion 1c that are arranged at female threaded portion 1b, this female threaded part 1 is integrally formed with adapter ring 2 at underpart 1g by ridge 1.
Standard-sized sheet limits body 1f to be formed along the sense of rotation of female thread 1a centered by the central shaft of female thread 1a, it has: with bearing surface (acting surface) 1k limiting body 67 under the standard-sized sheet shown in Fig. 9 and abut; From the helical plane of inclination that the lower edge of this bearing surface 1k tilts upward gradually (part for the end face (bottom) of cylindrical portion 1c) 1e as Suo Shi Fig. 3 (b); Be positioned at the circle-shaped internal surface 1m of the axis side of female thread 1a.That is, at grade, helical plane of inclination 1e is formed as gradually caving in upward from this part for the end of the foot (i.e. the lower edge of bearing surface 1k) of helical plane of inclination 1e and the cylindrical space 1j side of female threaded portion 1b and end lower surface 1n.
About this helical plane of inclination 1e, if launch centered by the central shaft of female thread 1a in this example embodiment, show as straight line, be formed into around the sense of rotation of female thread the upper end (that is, by a week) again arriving bearing surface 1k continuously from the lower edge of bearing surface 1k.In addition, height (length of its central axis direction) T of this bearing surface 1k is set as below the pitch P of female thread 1a.By limiting body 67 (Fig. 9) under making standard-sized sheet and this standard-sized sheet limiting body 1f and abut, force the rotation stopping rotor 57.
Female threaded part 1 is with the difference of female threaded part 61: because form the internal face of female threaded part 1 with a core, so standard-sized sheet limits body 1f to have helical plane of inclination 1e and circle-shaped internal surface 1m, part in addition has the structure the same with female threaded part 61.
Fig. 4 to Fig. 6 represents the mould for shaping above-mentioned female threaded part 1, and in Fig. 4 (b), for ease of understanding accompanying drawing, core 13 is drawn into the transparent body.Mould is made up of patrix 11, counterdie 12 and a core 13.
Patrix 11 has for the female threaded portion 1b side of female threaded part 1 shaping between core 13 and the space 11a on the top of cylindrical portion 1c and the sprue gate 11b of resin R.
Counterdie 12 has the space 12a of 1g side, underpart (bottom of cylindrical portion 1c) for female threaded part 1 shaping between the core 13 and accommodation section 12b for the ring-type at upper surface insert molding adapter ring 2.
About core 13, use an internal face that just can form female threaded part 1, this core 13 has: for the outer screw section 13a of the female thread 1a of shaping female threaded part 1 at an upper portion thereof; For the planar surface portion 13c of the bearing surface 1k of shaping female threaded part 1; For the shaping front end continuous tilt from bearing surface 1k and the helical portion 13b of the helical plane of inclination 1e rounded, to avoid the standard-sized sheet of female threaded part 1 limiting body 1f back-off; For the upper surface 13d of the end lower surface 1n (region of the inner side of circle-shaped internal surface 1m) of shaping female threaded part 1; For the cylindrical portion 13e of the cylindrical space 1j of shaping female threaded part 1; Be extended on the ridge 13f of underpart.This ridge 13f is used for extracting core 13 out rotatably after shaping female threaded part 1.
Use above-mentioned mould, as shown in Figure 4, after the accommodation section 12b of counterdie 12 accommodates adapter ring 2, combination patrix 11, counterdie 12 and core 13, make it solidify after the 11b casting resin R of sprue gate.Then, first take out counterdie 12, then use ridge 13f rotating core 13, while it taken out from female threaded part 1.As mentioned above, because the height T of bearing surface 1k is set to below the pitch P of female thread, so when carrying out this taking-up, because the helical portion 13b of core 13 to move or gradually mobile away from helical plane of inclination 1e along with the rotation of core 13 smoothly along the helical plane of inclination 1e of female threaded part 1, therefore standard-sized sheet limits body 1f not back-off, can easily take out core 13.That is, if make the such as vertical surface (face vertical relative to sense of rotation) that the part in the sense of rotation downstream side at core 13 standard-sized sheet limiting body 1f is formed as shown in figure 12, then as mentioned above, this standard-sized sheet limits body 1f and back-off occurs; But, because make the part in the sense of rotation downstream side at core 13 standard-sized sheet limiting body 1f be formed as describing helical trajectory, so there will not be back-off in the same manner as action in time taking out this core 13 (while rotating action of the axial direction movement of an edge female thread).
As shown in Figure 1, the standard-sized sheet of the female threaded part 1 manufactured as described above limits body 1f and there is bearing surface 1k and helical plane of inclination 1e, when limit under the standard-sized sheet shown in Fig. 9 body 67 with standard-sized sheet limits body 1f abut time, force to stop the rotation of rotor 57, mortor operated valve 51 is in full-gear.
Then, with reference to Fig. 7, the second mode of execution of female threaded part of the present invention is described.In the figure 7, identical with Fig. 1 ~ Fig. 6 symbol represents identical or equivalent part.
Female threaded part 1 shown in Fig. 1 and Fig. 2 has depression and is arranged on the end lower surface 1n of female threaded portion 1b, standard-sized sheet that in other words depression is arranged on the bottom of cylindrical portion 1c and limits body (standard-sized sheet fixing restriction body) 1f, but, female threaded part 1 ' of the present embodiment has the standard-sized sheet that a part is outstanding to cylindrical portion 1c side from the end lower surface 1n of female threaded portion 1b, part depression is arranged on end lower surface 1n and limits body 1f ', and other structure is identical with female threaded part 1.In addition, in the present embodiment, height (length of its central axis direction) T of bearing surface 1k is set to below the pitch P of female thread 1a.
When the female threaded part 1 ' of shaping such formation, standard-sized sheet in order to shaping concavity limits body 1f ', as long as make core be configured to the helical portion 13b of core 13 as shown in Figure 6 and planar surface portion 13c be positioned at the position (in other words, be configured to upper surface 13d in the neutral position of helical portion 13b intersect) lower than upper surface 13d and use the patrix 11 shown in Fig. 4 and counterdie 12.In addition, for the cast of the resin of mould and after solidifying, take out counterdie 12, then by making core rotate, making standard-sized sheet to limit body 1f ' not back-off, easily can take out core.
In addition, if the female threaded part 1 ' manufactured as described above is applied to the mortor operated valve 51 shown in Fig. 9, then when limiting body 67 under the standard-sized sheet shown in this figure and abutting with the bearing surface (standard-sized sheet limiting the side of body 1f ') standard-sized sheet limiting body 1f ', force the rotation stopping rotor 57, mortor operated valve 57 is in full-gear.
In addition, in the above description, helical plane of inclination 1e is formed to around the central shaft of female threaded part the upper end (with the end of above-mentioned front end opposition side) again arriving bearing surface from the lower edge (front end) of bearing surface 1k for one week, but, the present invention is not limited to this, as the aftermentioned explanation about Fig. 8, also can in the front end of helical plane of inclination 1e and/or formation par, rear end (plane perpendicular to the central shaft of female thread).
Fig. 8 is the figure of the variation representing helical plane of inclination 1e, that (transverse axis of Fig. 8 represents the angle of rotation of female thread 1a to explanatory drawing that use launches the unfolded drawing of this helical plane of inclination 1e centered by the central shaft of female thread 1a, that represent the drawing situation of helical plane of inclination 1e, the longitudinal axis represents the direction of the central shaft of female thread 1a, and the tilt angle of plane of inclination 1e is drawn slightly exaggerate).In addition, in fig. 8, identical with Fig. 1 ~ Fig. 7 symbol represents identical or equivalent part.
Fig. 8 (a) represents variation of the present invention, arranges par 1x in the front end (joining portion engaged with the front end of bearing surface 1k) of helical plane of inclination 1e.In this case, as shown in the drawing, (standard-sized sheet before representing rotation with symbol 1f limits body when supposing that this female threaded part 1 rotates along with the spiral of female thread 1a, represent with 1f 〞 and postrotational standard-sized sheet limit body), as long as the height of the tilt angle of helical plane of inclination 1e, bearing surface 1k, the distance etc. of par 1x are suitably set to and avoid the helical plane of inclination 1e of rotation and non-rotary helical plane of inclination to interfere.Namely, if core 13 to be configured to the tilt angle of the helical plane of inclination 1e that can be set as described above, the height of bearing surface 1k, the distance etc. of par 1x, then when taking out core 13, the helical plane of inclination 1e of the helical portion 13b of this core 13 and this female threaded part can be made to take out this core 13 uninterruptedly.
In this example embodiment, by arranging par 1x in the front end of helical plane of inclination 1e, the intensity of bearing surface standard-sized sheet limiting body 1f can be made to increase, prevent because with standard-sized sheet under limit the collision of body 67 and the durability that causes declines.
Fig. 8 (c) represents another variation of the present invention, par 1x is set in the front end (joining portion engaged with the front end of bearing surface 1k) of helical plane of inclination 1e, and par 1y is set in the rear end (joining portion engaged with the lower end of bearing surface 1k) of this helical plane of inclination 1e.In this example embodiment, when supposing that this female threaded part 1 rotates along with the spiral of female thread 1a, if be formed as avoiding the helical plane of inclination 1e of rotation and non-rotary helical plane of inclination to interfere by standard-sized sheet limiting body 1f, core 13 also can pull out.
The example that Fig. 8 (b) represents when the front and back of the helical plane of inclination 1e shown in the figure (c) of such as this figure are provided with par 1x and 1y, suppose that this female threaded part 1 carries out along with the spiral of female thread 1a rotating, the helical plane of inclination 1e that rotates and non-rotary helical plane of inclination interfere.In this case, when drawing core 13, this core 13 interferes with helical plane of inclination 1e, and core 13 can not pull out.
In addition, the present invention not only can as mentioned above at the front end of helical plane of inclination 1e and/or formation par, rear end 1x, 1y, par can also be formed in the middle of the 1e of this helical plane of inclination, in addition, helical plane of inclination 1e can also have multiple tilt angle, or its unfolded drawing not straight line as above can also be formed as, but curved.
In either case, when supposing that this female threaded part 1 rotates along with the spiral of female thread 1a, as long as be suitably set to by the height etc. of the tilt angle of helical plane of inclination 1e, bearing surface 1k and avoid the helical plane of inclination 1e of rotation and non-rotary helical plane of inclination to interfere, just core 13 can be taken out.When helical plane of inclination 1e has multiple tilt angle or has continuous print tilt angle, as long as with the angle drawing core 13 being more than or equal to its allowable angle of inclination.
In addition, the present invention is not only applicable to the female threaded part of mortor operated valve, as long as comprise female thread and there is central axis direction to female thread outstanding and there is the raised female threaded part of acting surface in the sense of rotation centered by this central shaft, go for any parts, product.That is, female threaded part of the present invention is not limited only to the structure shown in Fig. 1 and Fig. 7, can also for not having the structure of the cylindrical portion 1c forming cylindrical space 1j.
As mentioned above, in the respective embodiments described above, bearing surface 1k standard-sized sheet limiting body is formed as being absorbed in female threaded portion 1b side, consequently, limit the end face of body 67 side under the opening end of this bearing surface 1k is only standard-sized sheet, this bearing surface 1k with standard-sized sheet under limit the end face of body 67 opposition side and its bi-side are supported in female threaded portion 1b (being integrally formed).Namely, with formed compared with the situation about being made up of single clava described in the restriction body or documents 2 that mutually abut with single projection described in aforesaid documents 1 and 3, because the supporting surface of bearing surface 1k increases, so the intensity of this bearing surface 1k becomes large compared with the mortor operated valve shown in each document.
Consequently, even if bearing surface 1k with limit body 67 under standard-sized sheet and repeatedly abut, the distortion of this bearing surface 1k also can diminish, the durability of this mortor operated valve increases, and the intensity of this bearing surface 1k increases, and therefore, accurately controls this bearing surface 1k and reduces with the necessity of the amount of abutting (contact area) limiting body 67 under standard-sized sheet, the size management of this mortor operated valve each several part becomes easy, and its assembling performance, producibility improve.
Claims (13)
1. a female threaded part, is characterized in that, has: female threaded portion, and this female threaded portion is formed with female thread; And recess, caving in from the end of this female threaded portion at the central axis direction of described female thread at least partially of this recess, the sense of rotation centered by this central shaft has acting surface, and this female threaded part is one-body molded by resin,
Described recess has the helical plane of inclination tilted a week from described acting surface helically centered by the central shaft of female thread,
The height of described acting surface is below the pitch of described female thread.
2. a female threaded part, is characterized in that, has: female threaded portion, and this female threaded portion is formed with female thread; And recess, the central axis direction at least partially from the end of this female threaded portion to described female thread of this recess caves in, and the sense of rotation centered by this central shaft has acting surface, and this female threaded part is one-body molded by resin,
Described recess has from the helical plane of inclination that described acting surface helically tilts centered by the central shaft of female thread,
Described helical plane of inclination is formed as: when this female threaded part rotates along with the spiral of described female thread, can not interfere in this helical plane of inclination.
3. female threaded part according to claim 2, is characterized in that, described helical plane of inclination, during rounding from described acting surface and again arriving described acting surface, has at least one planar surface portion perpendicular to described central shaft.
4. female threaded part according to claim 2, is characterized in that, it is the part of straight line that described helical plane of inclination comprises its unfolded drawing at least partially.
5. female threaded part according to claim 3, is characterized in that, it is the part of straight line that described helical plane of inclination comprises its unfolded drawing at least partially.
6., according to described female threaded part arbitrary in claim 1 to 5, it is characterized in that,
Described female threaded portion has the internal diameter cylindrical portion larger than described female thread,
Described recess is formed at the bottom of described cylindrical portion.
7. female threaded part according to claim 6, is characterized in that, described acting surface is movably limit with the standard-sized sheet on the valve rod being arranged on mortor operated valve that standard-sized sheet that body abuts is fixing limits body, and valve rod and the described female thread of this mortor operated valve screw togather.
8. female threaded part according to claim 7, is characterized in that, is also formed with that full cut-off is fixing limits body at described female threaded portion with the end of described cylindrical portion opposite side.
9. a mortor operated valve, is characterized in that, comprising:
There is the valve body of valve seat;
Be installed on the female threaded part as claimed in claim 7 of this valve body;
There is the motor of rotor and stator; And
Valve rod, the female thread of this valve rod and described female threaded part screws togather and carrys out rotary actuation by described motor, and has to fix with described standard-sized sheet and limit the standard-sized sheet that body abuts and movably limit body.
10. a mortor operated valve, is characterized in that, comprising:
There is the valve body of valve seat;
Be installed on the female threaded part as claimed in claim 8 of this valve body;
There is the motor of rotor and stator; And
Valve rod, the female thread of this valve rod and described female threaded part screws togather and carrys out rotary actuation by described motor, and has to fix with described standard-sized sheet and limit standard-sized sheet that body abuts and movably limit body and can fix with described full cut-off and limit the full cut-off that body abuts and movably limit body.
The manufacture method of 11. 1 kinds of mortor operated valve female threaded parts, this mortor operated valve has: the male thread part rotating along with the rotation of motor rotor, screw togather with the female threaded part that is fixed on valve body; And the spool utilizing the rotation of this male thread part to contact with the valve seat in described valve body, be separated, the feature of this manufacture method is,
This female threaded part has: the female threaded portion screwed togather with the outer screw section of described male thread part; Cylindrical portion, this cylindrical portion is arranged on the described valve body side of this female threaded portion, and has the diameter cylindrical space larger than the diameter of thread of this female threaded portion; And standard-sized sheet fixing restriction body, in this cylindrical portion, the depression at least partially that restriction body fixed by this standard-sized sheet is arranged at described female threaded portion, when this mortor operated valve standard-sized sheet, the restriction body that this standard-sized sheet is fixed restriction body and the rotation along with described motor rotor and rotated abuts and limits the rotation of the valve opening direction of described male thread part
When this female threaded part shaping, use the counterdie of the described valve body side being used for this female threaded part shaping, for the patrix of the described female threaded portion side of this female threaded part shaping and for simultaneously shaping described female threaded portion and the core of cylindrical portion with described cylindrical space, this core can limit body interference-free and carries out form removal with described standard-sized sheet is fixing.
The manufacture method of 12. mortor operated valve female threaded parts according to claim 11, is characterized in that, described standard-sized sheet fixing restriction body has: with the rotation along with described motor rotor and bearing surface that the restriction body that rotates abuts; From the helical plane of inclination that the edge part of this bearing surface tilts gradually to the direction away from described valve body; And being positioned at the circle-shaped internal surface of axis side of described female threaded portion, described core carries out shaping to described bearing surface, helical plane of inclination and circle-shaped internal surface.
The manufacture method of 13. mortor operated valve female threaded parts according to claim 11 or 12, it is characterized in that, this female threaded part has the discoideus adapter ring for this female threaded part being fixed on described valve body at the outer surface of described cylindrical portion, clamp this adapter ring with described counterdie and described patrix, insert molding is carried out to this female threaded part.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-206615 | 2010-09-15 | ||
| JP2010206615A JP5778902B2 (en) | 2010-09-15 | 2010-09-15 | Female thread member, motor-operated valve using the same, and method for manufacturing female thread member for motor-operated valve |
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| Publication Number | Publication Date |
|---|---|
| CN102410394A CN102410394A (en) | 2012-04-11 |
| CN102410394B true CN102410394B (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110232586.0A Active CN102410394B (en) | 2010-09-15 | 2011-08-15 | Female Thread Part, Electric Valve And Manufacturing Method Of The Female Thread Part Used For The Electric Valve |
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| JP (1) | JP5778902B2 (en) |
| CN (1) | CN102410394B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107975603B (en) * | 2016-10-24 | 2020-08-14 | 株式会社鹭宫制作所 | Electric valve and refrigeration cycle system |
| JP6790012B2 (en) * | 2018-04-04 | 2020-11-25 | 株式会社鷺宮製作所 | Solenoid valve |
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| US5851003A (en) * | 1996-05-31 | 1998-12-22 | Fujikoki Corporation | Motor operated valve |
| CN1297518A (en) * | 1999-03-26 | 2001-05-30 | 株式会社鹭宫制作所 | Electrically operated valve |
| JP4004869B2 (en) * | 2002-06-24 | 2007-11-07 | Ｎｔｎ株式会社 | Injection mold of resin nut for feed screw device and manufacturing method |
| CN101788073A (en) * | 2009-01-22 | 2010-07-28 | 株式会社不二工机 | Mortor operated valve |
| JP2010169173A (en) * | 2009-01-22 | 2010-08-05 | Fuji Koki Corp | Motor-driven valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH03239875A (en) * | 1990-02-19 | 1991-10-25 | Fuji Koki Seisakusho:Kk | Manufacture of electric expansion valve |
| JP3442643B2 (en) * | 1998-02-27 | 2003-09-02 | 三菱電機株式会社 | Step motor |
| JP2000074172A (en) * | 1998-08-26 | 2000-03-07 | Thk Co Ltd | Molding nut, manufacture of molding nut, and linear guide device using molding nut |
| JP2002218707A (en) * | 2001-01-16 | 2002-08-02 | Nidec Tosok Corp | Structure of electromagnetic actuator |
| JP4531359B2 (en) * | 2003-07-18 | 2010-08-25 | 三菱電機株式会社 | motor |
| JP4550528B2 (en) * | 2004-09-01 | 2010-09-22 | 株式会社不二工機 | Motorized valve |
| JP4336279B2 (en) * | 2004-09-02 | 2009-09-30 | 株式会社鷺宮製作所 | Valve device and refrigeration cycle device |
| JP4570473B2 (en) * | 2005-01-25 | 2010-10-27 | 株式会社鷺宮製作所 | Valve device and refrigeration cycle device |
| JP5227684B2 (en) * | 2007-12-21 | 2013-07-03 | 株式会社不二工機 | Motor assembly and electric valve |
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2010
- 2010-09-15 JP JP2010206615A patent/JP5778902B2/en active Active
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2011
- 2011-08-15 CN CN201110232586.0A patent/CN102410394B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5851003A (en) * | 1996-05-31 | 1998-12-22 | Fujikoki Corporation | Motor operated valve |
| CN1297518A (en) * | 1999-03-26 | 2001-05-30 | 株式会社鹭宫制作所 | Electrically operated valve |
| JP4004869B2 (en) * | 2002-06-24 | 2007-11-07 | Ｎｔｎ株式会社 | Injection mold of resin nut for feed screw device and manufacturing method |
| CN101788073A (en) * | 2009-01-22 | 2010-07-28 | 株式会社不二工机 | Mortor operated valve |
| JP2010169173A (en) * | 2009-01-22 | 2010-08-05 | Fuji Koki Corp | Motor-driven valve |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2012062939A (en) | 2012-03-29 |
| JP5778902B2 (en) | 2015-09-16 |
| CN102410394A (en) | 2012-04-11 |
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