JP7381234B2 - Valve body drive device - Google Patents

Description

The present invention relates to a valve element drive device that includes a valve element that switches a flow path for refrigerant gas or the like.

This type of valve body driving device is described in Patent Document 1 and Patent Document 2. This valve body driving device includes a valve body that switches a flow path of refrigerant gas, a valve body that includes a rotor that drives the valve body, a stator that drives the rotor, and a cover that houses the valve body and the stator. , is equipped with.

Japanese Patent Application Publication No. 2014-209835 Japanese Patent Application Publication No. 2015-113965

Since the valve body driving device includes a rotor that drives the valve body and a stator that drives the rotor, vibrations are generated when the rotor is driven, and the vibrations may become a source of noise.
However, Patent Document 1 and Patent Document 2 do not describe or suggest the above-mentioned problems of vibration and noise.

An object of the present invention is to reduce the possibility of vibration and noise occurring in a valve body drive device having a structure in which a valve body is driven by a rotor and a stator.

In order to achieve the above object, the present invention includes a valve body that includes a valve body that switches a flow path, a rotor that drives the valve body, a stator that drives the rotor, and a valve body that has the valve body and the stator sandwiched between them. a first cover and a second cover that are held from both sides by the valve body, the stator, the first cover, and the second cover; It is characterized in that a deformed portion is provided at at least one location on which the holding force applied from both sides is applied.

According to the valve body driving device according to the present invention, the valve body drive device includes a first cover and a second cover that hold the valve body and the stator from both sides with the valve body and the stator interposed therebetween, and the valve body, the stator, the first cover and A deformed portion is provided at at least one location on the second cover where the holding force of the first cover and the second cover to hold from both sides acts.
As a result, when the first cover and the second cover sandwich the valve body and the stator and hold them from both sides, the deformable portion is deformed by the holding force, and a repulsive force is generated based on this deformation. do. Due to this repulsive force, the valve body and the stator are firmly tightened from both sides by the first cover and the second cover. That is, a state in which a tightening force is generated is reached. Therefore, it is possible to reduce the possibility that vibrations and noise will occur when the valve body drive device is driven.

Further, in the valve body driving device, the first cover, the stator, the valve body, and the second cover are assembled in this order from one side of the both sides, and the deformable portion is assembled with the first cover. It is preferable that the valve body be disposed between the stator and the valve body and the second cover.

According to the above configuration, the deformable portion is disposed between the first cover and the stator or between the valve body and the second cover, so that the possibility of generating the vibration or noise is reduced. can be effectively reduced.

Further, in the valve body driving device, it is preferable that the deformable portion is disposed on the first cover or the second cover.

According to the above configuration, since the deformable portion is disposed on the first cover or the second cover, the deformable portion can be disposed on the first cover or the second cover before the entire assembly. The deformed portion can be easily installed.

Further, in the valve body driving device, it is preferable that the deformable portion is integrally formed with the first cover or the second cover.

According to the above configuration, since the deformable portion is integrally formed with the first cover or the second cover, manufacturing thereof is easy.

Further, in the valve body driving device, it is preferable that the deformable portion is disposed on the second cover.

According to the above configuration, since the deformable portion is disposed on the second cover, the structure can be simplified and the possibility of generation of the vibration and noise can be reduced.

Further, in the valve body driving device, it is preferable that the deformable portion has a tapered shape with a protruding direction tapering.

According to the above configuration, since the deformation portion has a tapered shape tapered in the protruding direction, it is possible to effectively express the repulsive force based on the deformation.

Further, in the valve body driving device, it is preferable that the valve body has a small diameter portion and a large diameter portion, and the large diameter portion is sandwiched and fixed between the stator and the second cover.

According to the above configuration, since the large diameter portion of the valve body is sandwiched and fixed between the stator and the second cover, it is possible to simplify the structure and reduce the possibility that the vibration and noise will occur. .

Further, in the valve body driving device, the valve body has a small diameter portion, a large diameter portion, and a bottom plate portion, the bottom plate portion includes a connecting member, and the connecting member rotatably includes the valve body, Further, it is preferable that an inlet of an outflow pipe constituting the flow path is connected, and the deformed part is located at a position in contact with the bottom plate part.

According to the above configuration, since the deformable portion is located at a position where it contacts the bottom plate portion of the valve body, the structure can be simplified and the possibility of generation of the vibration and noise can be reduced.

Further, in the valve body driving device, it is preferable that the deformable portion is located in an area ranging from a side wall of the small diameter portion to a maximum diameter portion of the large diameter portion.

According to the above configuration, the deformable portion is located in a region ranging from the side wall of the small diameter portion to the maximum diameter portion of the large diameter portion. Thereby, the large-diameter portion of the valve body can be utilized to effectively generate the repulsive force that is based on the deformation of the deformable portion.

Further, in the valve body driving device, it is preferable that a contact position between the stator and the cover be in the region where the deformable portion is located.

According to the above configuration, since the contact position between the stator and the cover is in the region where the deformable portion is located, the position where the tightening force due to the repulsive force based on the deformation of the deformable portion acts is Since they are aligned substantially in a straight line, it is possible to effectively reduce the possibility that the vibrations and noise will occur.

Further, in the valve body driving device, it is preferable that at least one of the first cover and the second cover includes a mounting portion for mounting on an external device.

According to the above configuration, since the attachment part for attaching the valve body drive device to an external device is fixed to at least one of the first cover and the second cover, the state of attachment to the external device is ensured. Become.

Further, in the valve body driving device, it is preferable that the second cover includes the attachment portion.

According to the above configuration, since the attachment portion is disposed on the second cover, the attachment state to the external device becomes strong.

Further, in the valve body driving device, the first cover and the second cover include a first fixing part and a second fixing part that fix each other, and the first fixing part and the second fixing part are fixed. Before this, there was a gap between the first cover and the second cover, and when the first fixing part and the second fixing part were fixed, the gap decreased and the deformed part Preferably, it is deformed by a predetermined amount.

According to the above configuration, when the first fixing part of the first cover and the second fixing part of the second cover are fixed, the gap is reduced and the deformable part is deformed by a predetermined amount. . Thereby, the tightening force due to the repulsive force based on the deformation of the deformable portion can be effectively exerted.

Further, in the valve body driving device, it is preferable that the deformable portion is deformed by a predetermined amount by fixing the first fixing portion and the second fixing portion close to each other along the direction of the holding force.

According to the above configuration, by fixing the first fixing part and the second fixing part close to each other along the direction of the holding force, the deformable part is deformed by a predetermined amount. Thereby, the deformation of the deformable portion is aligned in a certain direction, and the tightening force due to the repulsive force can be effectively exerted.

Further, in the valve body driving device, it is preferable that the deformable portion is located at a position corresponding to the fixed portion.
Here, the "corresponding position" in "located at a position corresponding to a fixed part" means an arrangement where it can be said that one deformable part exists for one fixed part. That is, the deformable portion is located near the fixed portion.

According to the above configuration, the deformable portion is located at a position corresponding to the fixed portion, so when a fixing force of the fixed portion is applied, the force is mainly transmitted to the deformed portion located at the corresponding position. Thereby, the holding force by the first cover and the second cover can be efficiently applied to the deformable portion, and the tightening force due to the repulsive force can be effectively exerted.

Further, in the valve body driving device, it is preferable that the deformable portion is located between a radial center position of the cover and the fixed portion.

According to the above configuration, since the deformable portion is located between the radial center position of the cover and the fixing portion, the holding force by the first cover and the second cover is more efficiently applied to the deformable portion. can be made to act.

Further, in the valve body driving device, the valve body is connected to a flow pipe, and the cover is disposed with a gap from the flow pipe, and the regulating portion regulates movement of the flow pipe. Preferably.

According to the above configuration, the cover is disposed with a gap from the flow pipe and includes a regulating portion that restricts movement of the flow pipe. Thereby, the regulating portion can receive a load when bending the flow path pipe. Therefore, damage caused when bending the flow path tube can be reduced.

Further, in the valve body driving device, it is preferable that the gap between the regulating portion and the flow pipe is formed within a size range that allows deformation of the flow pipe.

According to the above configuration, the gap between the regulating portion and the flow pipe is formed in a size range that allows deformation of the flow pipe, so there is little risk of interfering with the bending work of the flow pipe. .

Further, in the valve body driving device, the flow path pipe includes an inflow pipe and an outflow pipe, the regulation section includes an inflow pipe regulation part and an outflow pipe regulation part, and the valve body is arranged with respect to the outflow pipe. It is preferable that the gap of the outflow pipe regulation part is smaller than the gap of the inflow pipe regulation part.

In a valve body driving device in which the flow path pipe includes the inflow pipe and the outflow pipe, the outflow pipe is usually formed to be thinner than the inflow pipe. This is because the design is based on the fact that the amount of outflow through the outflow pipe is normally smaller than the amount of inflow through the inflow pipe. Therefore, the outflow tube has lower resistance to bending than the inflow tube.
According to the above configuration, the gap of the outflow pipe regulating part is smaller than the gap of the inflow pipe regulating part, so that as soon as the outflow pipe starts to be bent and displaced due to the bending, the displacement is regulated by the regulating part. Ru. Thereby, damage caused when bending the outflow pipe, which has lower resistance to bending than the inflow pipe, can be effectively reduced.
Further, when extending the inflow pipe and the outflow pipe to the outside from the cover while both the inflow pipe and the outflow pipe are connected to the valve body, an assembly operation is performed in which the inflow pipe and the outflow pipe are passed through the restriction portion. At this time, since the gap between the outflow pipe and the outflow pipe regulating portion is small, the outflow pipe is firmly aligned and the outflow pipe is passed through. On the other hand, since the gap between the inflow pipe and the inflow pipe regulation part is larger than the gap between the outflow pipe and the outflow pipe regulation part, the alignment of the inflow pipe is the alignment of the outflow pipe length. Accuracy is not required; rough positioning is sufficient. Therefore, with the inflow pipe and the outflow pipe both connected to the valve body, the assembling work of extending the cover to the outside can be done by roughly aligning the inflow pipe. It can be done easily.

Further, in the valve body driving device, it is preferable that the regulating portion covers the entire circumference of the flow path pipe.

According to the above configuration, since the restriction portion covers the entire circumference of the flow path pipe, no matter which direction the flow path tube is bent, the displacement thereof is immediately regulated by the restriction portion.

Further, the valve body driving device includes a cylindrical body protruding from the cover, and the cylindrical body has the regulating part located on the tip side, and the inner diameter on the cover side is larger than the inner diameter of the regulating part. , is preferable.

According to the above configuration, the restriction portion is located on the tip side of the cylindrical body protruding from the cover, and the inner diameter on the cover side is larger than the inner diameter of the restriction portion. Thereby, during the assembly work in which the flow path pipe is passed through the cover, the cylindrical body functions as a guide, and the assembly work can be easily performed.

Further, in the valve body driving device, it is preferable that a surface of the regulating portion facing the flow pipe is parallel to an outer surface of the flow pipe.
Here, "parallel" in "the surface of the regulating part facing the flow pipe is parallel to the outer surface of the flow pipe" does not necessarily have to be strictly parallel; It means to be in a relationship of being located apart and along.

According to the above configuration, the surface of the regulating portion that faces the flow pipe is parallel to the outer surface of the flow pipe, so that the flow pipe begins to be bent due to the bending and comes into contact with the regulating portion. When they come into contact with each other and their displacement is restricted, the contact between the restriction portion and the flow path pipe becomes surface contact. Thereby, damage caused when bending the flow path tube can be effectively reduced.

Further, in the valve body driving device, it is preferable that an axial center position of the flow path pipe of the valve body at a connection position of the flow path pipe and a center position of the restriction portion coincide with each other.
Here, "coincidence" in "the axial center position of the flow pipe and the center position of the restriction part match" does not necessarily mean that they exactly match; It means that it is located away from the surface of the part.

According to the above configuration, since the axial center position of the flow pipe at the connecting position of the flow pipe of the valve body and the center position of the regulating portion match, the flow pipe can be bent in any direction. However, the displacement is immediately regulated by the regulating section.

Further, in the valve body driving device, the cover includes a mounting part for attaching to an external device, and a reinforcing part is provided between the fixed part to which the mounting part of the cover is fixed and the regulating part. It is preferable that the

According to the above configuration, the cover includes a mounting portion for attaching to an external device, and a reinforcing portion between the fixed portion to which the mounting portion of the cover is fixed and the regulating portion. That is, since the mounting part is provided with a reinforcing part between the part fixed to the cover and the regulating part, when the valve body driving device is attached to an external device by the mounting part, The attached state is stable.

Further, in the valve body driving device, it is preferable that the reinforcing portion is disposed between the regulating portion, in which the flow path pipe is an outflow pipe, and the fixed portion.

According to the above configuration, the reinforcing part is disposed between the regulating part, in which the flow pipe is an outflow pipe, and the fixed part, so that the valve body driving device can be connected to the outside by the mounting part. The stability when attached to equipment is further improved.

According to the present invention, it is possible to reduce the possibility of vibration and noise occurring in a valve body drive device having a structure in which a valve body is driven by a rotor and a stator.

FIG. 1 is an external perspective view of a valve body driving device according to an embodiment of the present invention. FIG. 2 is a schematic longitudinal cross-sectional view of the valve body drive device according to the same embodiment. FIG. 2 is a schematic vertical cross-sectional view of the valve body drive device according to the same embodiment before fixation. FIG. 2 is an exploded perspective view of a main part of the valve body drive device according to the same embodiment, showing a part of the valve body drive device in cross section. It is a perspective view which shows the different shape ((A), (B)) of the deformation part of the valve body drive device based on the same embodiment. FIG. 2 is an enlarged sectional view of a main part of the valve body drive device according to the same embodiment. FIG. 2 is an enlarged sectional view of a main part of the valve body drive device according to the same embodiment. It is a bottom view with a part of the bottom plate part (A) and the 2nd cover (B) of the valve body drive device based on the same embodiment in cross section. It is a partially cutaway perspective view from the bottom side of the valve body drive device according to the same embodiment.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The valve body driving device according to the present invention will be described in detail below based on the embodiments shown in FIGS. 1 to 9.
In the following description, three mutually orthogonal axes are referred to as the X axis, Y axis, and Z axis, respectively, as shown in FIG. 1. In this case, the upper part of FIG. 1 corresponds to the direction along the Z axis. The X-axis and Y-axis are specified insofar as they are orthogonal to the Z-axis.

[Embodiment]
As shown in FIGS. 1 and 2, the valve body driving device 1 according to the present embodiment includes a valve body 9 including a valve body 5 that switches a flow path 3, a rotor 7 that drives the valve body 5, and a valve body 9 that includes a rotor 7 that drives the valve body 5. The first cover 13 and the second cover 15 hold the valve body 9 and the stator 11 from both sides with the valve body 9 and the stator 11 sandwiched therebetween.
At least one portion of the valve body 9, the stator 11, the first cover 13, and the second cover 15 is subjected to the holding force F held from both sides by the first cover 13 and the second cover 15. Deformed portions 17 are provided at the locations.
Each component will be explained in detail below.

<Valve body>
As shown in FIG. 2, the valve body 9 has an internal space 6 sealed by the housing 2 and the bottom plate 4. As shown in FIG. The following members are housed in this internal space 6.
In this embodiment, the rotor 7 is rotatably attached to a rotor shaft 19 provided upright on the bottom plate portion 4 (see also FIG. 4). Furthermore, a first gear 21 that rotates together with the rotor 7 is provided on the rotor shaft 19.
The valve body 5 is rotatably provided on a valve body shaft 23 that is erected on the bottom plate portion 4 (see also FIG. 4). Further, a second gear 25 is rotatably provided on the valve body shaft 23. The second gear 25 meshes with the first gear 21. The second gear 25 is engaged with the valve body 5. That is, the second gear 25 is configured to rotate upon receiving rotational force from the first gear 21, rotate the valve body 5 by the rotation, and switch the flow path 3.

In this embodiment, as shown in FIG. 2, the valve body 9 has a shape having a small diameter portion 9s and a large diameter portion 9b. The large diameter portion 9b is held between the stator 11 and the second cover 15 from above and below. The stator 11 and the second cover 15 are in contact with each other in a state where they are pressed against each other at the contact portion 27 due to the holding force F.
The rotor 7 is located within the small diameter portion 9s. A stator 11 is disposed outside the side wall (partition wall) 9sw of the small diameter portion 9s, and the rotor 7 is rotationally driven by the stator 11. The stator 11 is held between the first cover 13 and the large diameter portion 9b from above and below. The stator 11 and the first cover 13 are in contact with each other in a state where they are pressed against each other at the contact portion 29 under the holding force F.

<First cover and second cover>
The first cover 13 and the second cover 15 hold the valve body 9 and the stator 11 from both upper and lower sides with the valve body 9 and the stator 11 sandwiched between them. In this embodiment, the first cover 13, stator 11, valve body 9, and second cover 15 are assembled in this order from one side of both sides, that is, from the top.
As shown in FIGS. 1, 2, and 4, the first cover 13 and the second cover 15 are provided with pairs of first fixing portions 13f and second fixing portions 15f that fix each other at multiple locations. . The first cover 13 and the second cover 15 are fixed to each other by fastening the first fixing part 13f and the second fixing part 15f with screws 31. A through hole 33 through which the screw 31 passes is formed in the first fixing part 13f, and a female thread part 35 into which the screw 31 is screwed is formed in the second fixing part 15.
In this embodiment, the first cover 13 and the second cover 15 are made of resin material. Specifically, polybutylene terephthalate resin (PBT resin) is used.

<Deformed part>
The deformable portion 17 is located at any one of the valve body 9, the stator 11, the first cover 13, and the second cover 15, and the holding force F held from both sides by the first cover 13 and the second cover 15 is applied. provided in at least one location. The deformable portion 17 is made of a material that deforms under the action of a holding force and generates an elastic repulsive force as the deformation occurs. Specifically, for example, polybutylene terephthalate resin (PBT resin) can be used. The deformation of the deformable portion 17 is not limited to one in which the material itself is crushed and deformed, but also includes one in which the material deforms elastically, such as rubber or a spring.
As shown in FIGS. 1 and 2, in this embodiment, the deformable portion 17 is provided on the second cover 15 between the valve body 9 and the second cover 15. Specifically, it is disposed between the bottom plate portion 4 of the valve body 9 and the surface 37 of the second cover 15 that faces the bottom plate portion 4 . In this embodiment, the deformable portion 17 is disposed on the second cover 15 and is further integrally molded with the second cover 15. Of course, the deformable portion 17 may be made separately from the second cover 15 and placed at the above position.

Note that the deformable portion 17 is arranged between the first cover 13 and the stator 11 instead of between the valve body 9 and the second cover 15. In this embodiment, the deformable portion 17 is disposed on the first cover 13 and is further integrally molded with the first cover 13. That is, it may be provided at the position of the contact portion 29 of the first cover 13.
Of course, the deformable portion 17 may be made separately from the first cover 13 and placed at the above position.
Further, the deformable portion 17 may be arranged both between the valve body 9 and the second cover 15 and between the first cover 13 and the stator 11.

≪Shape of deformed part≫
The deformable portion 17 may have any shape as long as it is deformed by the holding force F and generates the repulsive force. As shown in FIG. 4, in this embodiment, it is formed into a cylindrical shape.
The shape of the deformed portion 17 is not limited to a cylindrical shape. For example, as shown in FIG. 5, the deformable portion 39 of the deformable portion 17 may have a tapered shape. The upper diagram (A) in FIG. 5 shows an example in which the entire deformed portion 17 has a tapered shape. On the other hand, the lower diagram (B) in FIG. 5 shows an example in which the lower part of the deformable part 17 has a cylindrical shape and the upper part has a tapered shape. Of course, shapes other than the tapered shape may be used.

<Flow path>
The flow path 3 that is switched by the valve body 5 is composed of a plurality of flow path pipes 3t. In this embodiment, the plurality of flow path pipes 3t include one inflow pipe 3ti for flowing fluid into the valve body 9, and two outflow pipes 3to for causing fluid to flow out from the valve body 9. It is configured. Of course, the number of inflow pipes 3ti and outflow pipes 3to is not limited to the above-mentioned one and two.
When the valve body driving device 1 is attached to an external device such as a refrigerator, the flow path pipe 3t is usually bent in its direction in order to connect to a flow path on the external device side. Therefore, the flow pipe 3t is made of a material such as a copper alloy that can be bent as described above.
Further, it is usual that the number of outflow pipes 3to is greater than the number of inflow pipes 3ti, and the flow path diameter of the outflow pipes 3to is smaller than that of the inflow pipes 3ti. The thickness of the outflow pipe 3to is usually made smaller than the thickness of the inflow pipe 3ti. This is because the flow rate of each of the plurality of outflow pipes 3to whose flow paths 3 are switched by the valve body 5 decreases.

<Flow pipe and bottom plate>
As shown in FIGS. 2 and 4, in this embodiment, the bottom plate portion 4 of the valve body 9 includes a disk-shaped connecting member 8 for connecting the outflow pipe 3to. The two outflow pipes 3to are directly connected to the connecting member 8 by brazing. Further, a valve body shaft 23 serving as a rotation axis of the valve body 5 is provided upright on the connecting member 8 . On the other hand, the inflow pipe 3ti is directly connected to the bottom plate portion 4 by brazing.
That is, the connecting member 8 is rotatably provided with the valve body 5, and is further connected to the inlets of the two outflow pipes 3to.

<Positional relationship between small diameter part, large diameter part, and deformed part>
As shown in FIG. 2, in this embodiment, the deformable portion 17 is located in a region 41 ranging from the side wall 9sw of the small diameter portion 9s of the valve body 9 to the maximum diameter portion of the large diameter portion 9b.
In this embodiment, the contact position between the stator 11 and the first cover 13, that is, the contact portion 29 is further configured to be located in the region 41 where the deformable portion 17 is located. In other words, the contact portion 29 between the first cover and the stator 11 and the contact portion between the stator 11 and the large diameter portion 9b are the positions where the tightening force due to the repulsive force based on the deformation of the deformable portion 17 acts. 27 and the deformable portion 17 are located within the region 41 and are configured to be aligned substantially in a straight line in the vertical direction (Z-axis direction).
Note that the boundary position of the region 41 does not need to be exact. That is, they may deviate within a range that can be said to substantially satisfy the above condition of "aligning on a straight line".

<Attachment part to external equipment>
As shown in FIG. 1, the valve body driving device 1 of this embodiment is provided with a second cover 15 and a mounting portion 43 used for mounting on an external device (not shown) such as a refrigerator. Specifically, the base end portion 49 of the attachment portion 43 is fastened and fixed to the fixed portion 45 located adjacent to one of the second fixing portions 15f of the second cover 15 with a screw 47. The tip end 51 of the attachment part 43 is a part used for attachment to external equipment. Since the mounting portion 43 is disposed on the second cover 15, the state of attachment to external equipment becomes strong.
Note that the attachment portion 43 may be provided on the first cover 13. Furthermore, it goes without saying that the shape of the attachment portion 43 is not limited to the shape shown in FIG.

<Fixed part and deformable part>
As shown in FIG. 1, the first cover 13 and the second cover 15 are provided with pairs of first fixing parts 13f and second fixing parts 15f, which are fixing parts that fix each other, at a plurality of locations.
As shown in FIG. 3, before the first fixing part 13f and the second fixing part 15f are fastened and fixed by the screws 31, there is a gap G1 between the first cover 13 and the second cover 15. When the first fixing part 13f and the second fixing part 15f are firmly fixed (FIG. 2), the gap G1 is reduced, and the deformable part 17 is deformed by a predetermined amount by the reduced amount. It is composed of

In FIG. 4, a hole 53 arranged adjacent to the female screw portion 35 of the second fixing portion 15f of the second cover 15 is used for positioning the first cover 13 and the second cover 15. The first cover 13 is provided with a protrusion for alignment (not shown), and by inserting the protrusion into the hole 53, the first cover 13 and the second cover 15 are aligned. be exposed.

According to the above configuration, when the first fixing part 13f of the first cover 13 and the second fixing part 15f of the second cover 15 are fixed (FIG. 2), the gap G1 is reduced and the deformable part 17 is It is in a state where it is deformed by a predetermined amount. In FIG. 3, the symbol G2 is the gap between the bottom plate portion 4 and the second cover 15 when there is a gap G1 between the first cover 13 and the second cover 15, and in FIG. This is the gap between the bottom plate part 4 and the second cover 15 when the gap G1 between the first cover 13 and the second cover 15 is reduced or eliminated.
By fixing the first fixing part 13f of the first cover 13 and the second fixing part 15f of the second cover 15 with the screws 31, the gap G2 before fixing is reduced to the gap G3 after fixing, and the deformed part 17 is transformed by that amount. Thereby, the tightening force due to the repulsive force based on the deformation of the deformable portion 17 can be effectively exerted.

Further, in this embodiment, the deformable portion 17 is arranged so as to be deformed by a predetermined amount by fixing the first fixing portion 13f and the second fixing portion 15f close to each other along the direction of the holding force. Thereby, the deformation of the deformable portion 17 is aligned in a certain direction, and the tightening force due to the repulsive force can be effectively expressed.

Further, as shown in FIG. 4, in this embodiment, the deformable portion 17 is provided at a position corresponding to the fixing portion, that is, the first fixing portion 13f and the second fixing portion 15f. Specifically, it is provided on the surface 37 of the second cover 15 that faces the bottom plate portion 4 and at a position corresponding to the second fixing portion 15f. Here, the "corresponding position" in "located at a position corresponding to a fixed part" means an arrangement in which one deformable part 17 can be said to exist for one fixed part 15f. That is, the deformable portion 17 is placed near the fixed portion 15f.

Further, as shown in FIGS. 2 and 4, in this embodiment, the deformable portion 17 is located between the radial center position C of the first cover 13 and the second cover 15 and the fixed portion, that is, the second fixed portion 15f. It is configured to be located in Thereby, the holding force by the first cover 13 and the second cover 15 can be applied to the deformable portion 17 more efficiently.
Here, "located between" in "located between the radial center position C of the second cover 15 and the second fixing part 15f" refers to the radius connecting the radial center position C and the second fixing part 15f. The arrangement is not limited to the arrangement located on the straight line in the direction, but also includes arrangement located off the straight line in the radial direction within the range where the above-mentioned effects can be practically obtained.

<Regulatory Department>
Further, as shown in FIGS. 1, 6, and 7, in this embodiment, the second cover 15, which is one of the covers, includes a cylindrical body 61 that serves as a guide for passing the flow path pipe 3t. .
The cylinder 61 includes an inflow pipe cylinder 61i for the inflow pipe 3ti, and an outflow pipe cylinder 61o for the outflow pipe 3to. The inflow pipe cylinder 61i includes an inflow pipe regulating portion 63i that is a regulating portion that regulates the movement of the inflow pipe 3ti. The outflow pipe cylinder body 61o is provided with an outflow pipe regulation part 63o that is a regulation part that regulates the movement of the outflow pipe 3to.

The inflow pipe regulating portion 63i is arranged with a gap g1 between the inflow pipe 3ti and the inflow pipe 3ti. Further, the outflow pipe regulating portion 63o is arranged with a gap g2 between the outflow pipe 3to and the outflow pipe 3to (FIG. 7).
The gap g1 of the inflow pipe regulating portion 63i is formed within a size range that allows deformation of the inflow pipe 3ti. The gap g2 of the outflow pipe regulating portion 63o is formed within a size range that allows deformation of the outflow pipe 3to.
As shown in FIG. 7, the gap g2 of the outflow pipe regulation part 63o is formed smaller than the gap g1 of the inflow pipe regulation part 63i.

In addition, as shown in FIGS. 1 to 4, FIGS. 6 and 7, in this embodiment, the inflow pipe regulating section 63i and the outflow pipe regulating section 63o both cover the entire circumference of the inflow pipe 3ti and the outflow pipe 3to. They are designed to cover each.
Further, in the present embodiment, the inflow pipe regulating section 63i and the outflow pipe regulating section 63o are provided on the distal end sides of the inflow pipe cylinder 61i and the outflow pipe cylinder 61o that protrude from the second cover 15. The inflow pipe cylindrical body 61i is formed so that an inner diameter m1 on the second cover 15 side is larger than an inner diameter m2 of the inflow pipe regulating portion 63i. The outflow pipe cylindrical body 61o is formed so that an inner diameter n1 on the second cover 15 side is larger than an inner diameter n2 of the outflow pipe regulating portion 63o.

Further, in this embodiment, the inflow pipe regulating section 63i and the outflow pipe regulating section 63o are configured such that surfaces 71 and 73 facing the flow pipe 3t are parallel to the outer surface of the flow pipe 3t.
Here, "parallel" in "the surfaces 71 and 73 of the regulating section that face the flow pipe 3t are parallel to the outer surface of the flow pipe 3t" does not necessarily have to be strictly parallel to each other; This means that the surfaces of the two sides are located apart from each other.

<Axial center position of flow path pipe and center position of regulating part>
Further, as shown in FIG. 8, in this embodiment, the axial center position 81i of the inflow pipe 3ti and the outflow pipe 3to at the connection position of the inflow pipe 3ti and the outflow pipe 3to, which are the flow path pipes 3t, to the bottom plate part 4, 81o (left diagram (A) in FIG. 8) and center positions 83i and 83o (right diagram (B) in FIG. 8) of the inflow pipe regulating section 63i and outflow pipe regulating section 63o are configured to match. There is.
Here, "coincidence" in "the axial center positions 81i, 81o of the flow path pipe 3t and the center positions 83i, 83o of the inflow pipe regulating part 63i and the outflow pipe regulating part 63o coincide" means that they exactly match. This does not necessarily mean that the outer surface of the flow path pipe 3t is located apart from the opposing surfaces 71 and 73 of the regulating portion.
In other words, the structure in which the axial center position 81o of the two outflow pipes 3to and the two center positions 83o of the outflow pipe regulating part 63o coincide is the distance between the axial center positions 81o of the two outflow pipes 3to. 85 and the distance 87 between the two center positions 83o of the outflow pipe regulating portion 63o are the same.

<Regulation section and reinforcement section>
Further, as shown in FIG. 9, in this embodiment, the second cover 15 includes a mounting portion 43 (FIG. 1) for attaching to an external device, and the mounting portion 43 of the second cover 15 is fixed. A reinforcing portion 91 is provided between the fixed portion 45 and the outflow pipe regulating portion 63o. The reinforcing portion 91 connects the fixed portion 45 and the outflow pipe regulating portion 63o to increase the rigidity of the fixed portion 45. Here, the reinforcing portion 91 is made by integrally molding with the second cover 15.
Although not shown, the fixed part 45 to which the mounting part 43 is fixed is provided at a position corresponding to the inflow pipe regulating part 63i of the second cover 15, and the reinforcing part 91 is provided between it and the inflow pipe regulating part 63i. A structure may also be provided.

<Description of the effects of Embodiment 1>
(1) According to the present embodiment, the first cover 13 and the second cover 15 are provided which hold the valve body 9 and the stator 11 from both sides with the valve body 9, the stator 11, the first cover 13 and A deformable portion 17 is provided at at least one location on the second cover 15 where the holding force of the first cover 13 and the second cover 15 to hold the second cover 15 from both sides acts.
As a result, when the first cover 13 and the second cover 15 hold the valve body 9 and the stator 11 from both sides with the valve body 9 and the stator 11 sandwiched therebetween, the deformable portion 17 is deformed by the holding force, so that a repulsive force is generated due to this deformation. occurs. Due to this repulsive force, the valve body 9 and the stator 11 are firmly tightened from both sides by the first cover 13 and the second cover 15. That is, a state in which a tightening force is generated is reached. Therefore, it is possible to reduce the possibility that vibration and noise will occur when the valve body drive device 1 is driven.

(2) Since the deformable portion 17 is disposed between the first cover 13 and the stator 11 or between the valve body 9 and the second cover 15, it effectively reduces the possibility that the vibrations and noise will occur. can do.
Moreover, if the deformable part 17 is arranged in the first cover 13 or the second cover 15, the deformable part 17 can be deformed by being arranged in the first cover 13 or the second cover 15 before the entire assembly. The section 17 can be installed easily.
Further, the deformable portion 17 can be easily manufactured if it is formed integrally with the first cover or the second cover. Further, if the deformable portion 17 is arranged in the second cover, the deformable portion is arranged in the second cover, which simplifies the structure and reduces the possibility of the vibration and noise occurring. be able to.

(3) Furthermore, if the deformable portion 17 has a tapered shape with a tapered direction, the repulsive force based on the deformation can be effectively exerted.

(4) In addition, the valve body 9 has a small diameter portion 9s and a large diameter portion 9b, and if the large diameter portion 9b is sandwiched and fixed between the stator 11 and the second cover 15, the valve body 9 can be fixed. Since the large diameter portion 9b is sandwiched and fixed between the stator 11 and the second cover 15, the structure can be simplified and the possibility of the vibration and noise occurring can be reduced.

(5) Furthermore, since the deformable portion 17 is located at a position where it contacts the bottom plate portion 4 of the valve body 9, the structure can be simplified and the possibility of the vibration and noise occurring can be reduced.

(6) Furthermore, if the deformable portion 17 is structured to be located in the region 41 ranging from the side wall 9sw of the small diameter portion 9s to the maximum diameter portion of the large diameter portion 9b, the deformable portion 17 can be formed by utilizing the large diameter portion 9b of the valve body 9. , the repulsive force caused by the deformation of the deformable portion 17 can be effectively expressed.
Furthermore, if the contact positions 29 and 27 between the stator 11 and the first cover 13 and the second cover 15 are located in the region 41 where the deformable portion 17 is located, the repulsive force based on the deformation of the deformable portion 17 can be applied. Since the positions where the tightening force is applied are aligned substantially in a straight line, the possibility of the vibration and noise occurring can be effectively reduced.

<Explanation of the effects of the regulatory department>
The effects based on the regulating section will be explained below.
(7) The second cover 15 of the cover is arranged with gaps g1 and g2 between the inflow pipe 3ti and the outflow pipe 3to, which are the flow path pipes 3t, respectively, and the inflow pipe regulates the movement of the inflow pipe 3ti and the outflow pipe 3to. A regulating section 63i and an outflow pipe regulating section 63o are respectively provided. Thereby, the inflow pipe regulation part 63i and the outflow pipe regulation part 63o can receive the load when bending the inflow pipe 3ti and the outflow pipe 3to. Therefore, damage caused when bending the inflow pipe 3ti and the outflow pipe 3to can be reduced.
In addition, gaps g1 and g2 between the inflow pipe regulating part 63i, the outflow pipe regulating part 63o, the inflow pipe 3ti, and the outflow pipe 3to are formed within a dimensional range that allows deformation of the inflow pipe 3ti and the outflow pipe 3to. Therefore, there is little risk of interfering with the bending work of the inflow pipe 3ti and the outflow pipe 3to.

(8) The gap g2 of the outflow pipe regulation part 63o is smaller than the gap g1 of the inflow pipe regulation part 63i:
In the valve body driving device 1 having a structure including an inflow pipe 3ti and an outflow pipe 3to, the outflow pipe 3to is usually formed to have a thinner pipe thickness than the inflow pipe 3ti. This is because the design is based on the fact that the amount of outflow passing through the outflow pipe 3to is normally smaller than the amount of inflow passing through the inflow pipe 3ti. For this reason, the outflow pipe 3to may have lower resistance to bending than the inflow pipe 3ti.
According to the regulating section of this embodiment, the gap g2 of the outflow pipe regulating section 63o is smaller than the gap g1 of the inflow pipe regulating section 63i. Its displacement is regulated by Thereby, damage caused when bending the outflow pipe 3to, which has lower resistance to bending than the inflow pipe 3ti, can be effectively reduced.
In addition, when the inflow pipe 3ti and the outflow pipe 3to are both connected to the valve body 9, when extending to the outside from the second cover 15, it passes through the inflow pipe regulation part 63i and the outflow pipe regulation part 63o. assembly work will be performed. At this time, since the gap g2 between the outflow pipe 3to and the outflow pipe regulating portion 63o is small, the outflow pipe 3to is properly positioned and passed through the outflow pipe 3to. On the other hand, since the gap g1 between the inflow pipe 3ti and the inflow pipe regulation part 63i is larger than the gap g2 between the outflow pipe 3to and the outflow pipe regulation part 63o, the above-mentioned alignment of the inflow and outflow pipe 3ti is performed at a position about the same as the outflow pipe 3to. Alignment accuracy is not required; rough positioning is sufficient. Therefore, in the state where both the inflow pipe 3ti and the outflow pipe 3to are connected to the valve body 9, the above-mentioned alignment of the inflow pipe 3ti is sufficient for the assembly work of extending the second cover 15 to the outside. This can be done easily.

(9) Furthermore, if the structure is such that the inflow pipe regulating part 63i and the outflow pipe regulating part 63o cover the entire circumferences of the inflow pipe 3ti and the outflow pipe 3to, it is possible to bend the inflow pipe 3ti and the outflow pipe 3to in which direction. Also, its displacement is immediately regulated by the inflow pipe regulation section 63i and the outflow pipe regulation section 63o.

(10) In addition, an inflow pipe regulating part 63i and an outflow pipe regulating part 63o are respectively located on the distal end sides of the cylinders 61i and 61o protruding from the second cover 15, and the second cover 15 of the cylinders 61i and 61o If the structure is such that the inner diameters m1 and n1 of the sides are larger than the inner diameters m2 and n2 of the inflow pipe regulating part 63i and the outflow pipe regulating part 63o, when assembling the inflow pipe 3ti and the outflow pipe 3to through the second cover 15, The cylindrical bodies 61i and 61o function as guides, making it easy to assemble them.

(11) Also, if the surfaces 71 and 73 of the inflow pipe regulating part 63i and the outflow pipe regulating part 63o that face the inflow pipe 3ti and the outflow pipe 3to are parallel to the outer surfaces of the inflow pipe 3ti and the outflow pipe 3to, , when the inflow pipe 3ti and the outflow pipe 3to begin to be bent and displaced by the bending, and their displacement is regulated by coming into contact with the inflow pipe regulation part 63i and the outflow pipe regulation part 63o, the inflow pipe regulation part 63i and the outflow pipe regulation part 63i and the outflow pipe regulation part 63i The contact between the portion 63o, the inflow pipe 3ti, and the outflow pipe 3to is surface contact. Thereby, damage caused when bending the inflow pipe 3ti and the outflow pipe 3to can be effectively reduced.

(12) Also, the axial center positions 81i and 81o of the inflow pipe 3ti and the outflow pipe 3to at the connection position of the inflow pipe 3ti and the outflow pipe 3to of the valve body 9, and the center positions of the inflow pipe regulation part 63i and the outflow pipe regulation part 63o. If 83i and 83o are configured to match, no matter which direction the inflow pipe 3ti and the outflow pipe 3to are bent, the displacement thereof is immediately regulated by the inflow pipe regulation part 63i and the outflow pipe regulation part 63o.

(13) The second cover 15 also includes a mounting portion 32 for mounting on an external device, and is provided between the fixed portion 45 to which the mounting portion 43 of the second cover 15 is fixed and the outflow pipe regulating portion 63o. If configured to include the reinforcing portion 91, when the valve body driving device 1 is attached to an external device by the attachment portion 43, the attached state is stabilized.
In other words, if the mounting part 43 is provided with the reinforcing part 91 between the part fixed to the second cover 15 and the outflow pipe regulating part 63o, the reinforcing part 91 is connected to the fixed part 45 and the outflow pipe regulating part 63o. The rigidity and strength of the fixed part 45 can be increased by connecting the fixed part 45 with the fixed part 45.
Note that the fixed part 45 to which the attachment part 43 is fixed may be provided at a position corresponding to the inflow pipe regulating part 63i of the second cover 15, and the reinforcing part 91 may be provided between it and the inflow pipe regulating part 63i. , a similar effect can be obtained.

In the above description, the valve body driving device 1 having the structure including the inflow pipe regulating part 63i and the outflow pipe regulating part 63o has been described with respect to the structure in which the deformable part 17 is arranged. The inflow pipe regulation part 63i and the outflow pipe regulation part 63o may be applied to the valve body driving device 1 having a structure in which the deformation part 17 is not arranged.

[Other embodiments]
Although the valve body drive device 1 according to the present invention basically has the configuration described above, partial configuration changes or omissions may be made without departing from the gist of the present invention. Of course, this is also possible.

In the above embodiment, the valve body 5 has a structure in which the rotational power of the rotor 7 is transmitted through the first gear 21 provided on the rotor shaft 19 and the second gear 25 provided on the valve body shaft 23. However, the structure may be such that the rotational power is directly transmitted from the rotor shaft 19 to the valve body 5 without going through the first gear 21 and the second gear 25.

Although the number of deforming parts 17 is three in the above description, it may be four or more.
In the above explanation, the number of pairs of the first fixing part 13f and the second fixing part 15f that fix the first cover 13 and the second cover 15 to each other is four, but it may be three or five or more.

DESCRIPTION OF SYMBOLS 1... Valve body drive device, 3... Flow path, 3t... Flow path pipe, 3ti... Inflow pipe,
3to...Outflow pipe, 4...Bottom plate part, 5...Valve body, 6...Inner space part,
7... Rotor, 8... Connection member, 9... Valve body, 9s... Small diameter part,
9b...large diameter part, 9sw...side wall (partition), 11... stator,
13...first cover, 13f...first fixing part, 15...second cover,
15f...Second fixed part, 17...Deformation part, 19...Rotor shaft,
21...First gear, 23...Valve body shaft, 25...Second gear, 27...Contact part,
29...Contact part, 31...Screw, 33...Through hole, 35...Female thread part,
37... Surface facing the bottom plate portion, 39... Deformed portion, 41... Region,
43... Attachment part, 45... Fixed part, 47... Screw, 49... Base end part,
51... Tip portion, 53... Hole, 61... Cylindrical body, 61i... Inflow pipe cylinder body,
61o...Outflow pipe cylinder body, 63i...Inflow pipe regulation part, 63o...Outflow pipe regulation part,
71... Opposing surface, 73... Opposing surface, 81i... Axial center position,
81o... Axial center position, 83i... Center position, 83o... Center position,
85...Distance, 87...Distance, 91...Reinforcement part,
G1, G2, G3...gap, g1, g2...gap, m1, m2...inner diameter,
n1, n2...inner diameter

Claims (24)

a valve body that includes a valve body that switches a flow path and a rotor that drives the valve body;
a stator that drives the rotor;
comprising a first cover and a second cover that hold the valve body and the stator from both sides with the valve body sandwiched therebetween;
A deformed portion is formed in at least one location of the valve body, the stator, the first cover, and the second cover where a holding force from both sides of the first cover and the second cover is applied. We are equipped with
The valve body has a small diameter part and a large diameter part,
the large diameter portion is sandwiched and fixed between the stator and the second cover ;
A valve body drive device characterized by the following. a valve body that includes a valve body that switches a flow path and a rotor that drives the valve body;
a stator that drives the rotor;
comprising a first cover and a second cover that hold the valve body and the stator from both sides with the valve body sandwiched therebetween;
A deformed portion is formed in at least one location of the valve body, the stator, the first cover, and the second cover where a holding force from both sides of the first cover and the second cover is applied. We are equipped with
The valve body has a small diameter part, a large diameter part, and a bottom plate part,
The bottom plate portion includes a connecting member,
The connecting member rotatably includes the valve body and is connected to an inlet of an outflow pipe constituting the flow path,
The deformable portion is located at a position where it contacts the bottom plate portion .
A valve body drive device characterized by the following. a valve body that includes a valve body that switches a flow path and a rotor that drives the valve body;
a stator that drives the rotor;
comprising a first cover and a second cover that hold the valve body and the stator from both sides with the valve body sandwiched therebetween;
A deformed portion is formed in at least one location of the valve body, the stator, the first cover, and the second cover where a holding force from both sides of the first cover and the second cover is applied. We are equipped with
The valve body is connected to a flow pipe,
The second cover is disposed with a gap from the flow pipe and includes a regulating portion that restricts movement of the flow pipe.
A valve body drive device characterized by the following. The valve body drive device according to claim 1 or 2 ,
The deformed portion is located in an area ranging from the side wall of the small diameter portion to the maximum diameter portion of the large diameter portion.
A valve body drive device characterized by the following. The valve body drive device according to claim 4 ,
The contact position between the stator and the first cover is in the region where the deformable portion is located.
A valve body drive device characterized by the following. The valve body drive device according to any one of claims 1 to 5 ,
The first cover, the stator, the valve body, and the second cover are assembled in this order from one side of the both sides,
The deformable portion is disposed between the first cover and the stator or between the valve body and the second cover.
A valve body drive device characterized by the following. The valve body drive device according to any one of claims 1 to 6 ,
The deformation part is arranged on the first cover or the second cover,
A valve body drive device characterized by the following. The valve body drive device according to claim 7 ,
The deformation portion is integrally formed with the first cover or the second cover,
A valve body drive device characterized by the following. The valve body drive device according to any one of claims 1 to 8 ,
the deformation part is arranged on the second cover;
A valve body drive device characterized by the following. The valve body driving device according to any one of claims 7 to 9 ,
The deformed portion has a tapered shape in which the protruding direction is tapered.
A valve body drive device characterized by the following. The valve body drive device according to any one of claims 1 to 10 ,
At least one of the first cover and the second cover includes a mounting portion for attaching to an external device.
A valve body drive device characterized by the following. The valve body drive device according to claim 11 ,
the second cover includes the attachment portion;
A valve body drive device characterized by the following. The valve body drive device according to any one of claims 1 to 12 ,
The first cover and the second cover include a first fixing part and a second fixing part that fix each other,
Before the first fixing part and the second fixing part are fixed, there is a gap between the first cover and the second cover,
When the first fixing part and the second fixing part are fixed, the gap is reduced and the deformable part is deformed by a predetermined amount.
A valve body drive device characterized by the following. The valve body drive device according to claim 13 ,
The deformable portion is deformed by a predetermined amount by fixing the first fixing portion and the second fixing portion close to each other along the direction of the holding force.
A valve body drive device characterized by the following. The valve body drive device according to claim 13 or 14 ,
the deformable portion is located at a position corresponding to the second fixed portion;
A valve body drive device characterized by the following. The valve body drive device according to claim 15 ,
The deformable part is located between the radial center position of the second cover and the second fixing part,
A valve body drive device characterized by the following. The valve body driving device according to claim 3 ,
The gap between the regulating portion and the flow pipe is formed within a size range that allows deformation of the flow pipe.
A valve body drive device characterized by the following. The valve body drive device according to claim 3 or 17 ,
The flow pipe includes an inflow pipe and an outflow pipe,
The regulating section includes an inflow pipe regulating section and an outflow pipe regulating section,
The valve body is arranged with respect to the outflow pipe,
the gap of the outflow pipe regulation part is smaller than the gap of the inflow pipe regulation part;
A valve body drive device characterized by the following. The valve body driving device according to claim 3, 17 or 18 ,
The regulating portion covers the entire circumference of the flow pipe,
A valve body drive device characterized by the following. The valve body drive device according to any one of claims 3 and 17 to 19 ,
The regulating portion is a cylindrical body protruding from the second cover,
The cylinder body is
The regulating portion is located on the tip side,
an inner diameter of the second cover side is larger than an inner diameter of the regulating portion;
A valve body drive device characterized by the following. The valve body drive device according to any one of claims 3 and 17 to 20 ,
a surface of the regulating portion that faces the flow pipe is parallel to an outer surface of the flow pipe;
A valve body drive device characterized by the following. The valve body drive device according to any one of claims 3 and 17 to 21 ,
an axial center position of the flow path pipe at a connection position of the flow path pipe of the valve body and a center position of the restriction portion;
A valve body drive device characterized by the following. The valve body drive device according to any one of claims 3 and 17 to 22 ,
The second cover is
Equipped with a mounting part for attaching to external equipment,
a reinforcing portion is provided between the fixed portion to which the mounting portion of the cover is fixed and the regulating portion;
A valve body drive device characterized by the following. The valve body driving device according to claim 23 ,
The reinforcing portion is disposed between the regulating portion, in which the flow path pipe is an outflow pipe, and the fixed portion.
A valve body drive device characterized by the following.

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