JP2018119448A - Fluid control valve, fluid device and fixation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a novel fluid control valve capable of suppressing fluctuation of a position of a fixation member due to an interval between a fixation function material insertion groove and a fixation function material, which are formed in the fixation member, and provide a fluid device and a fixation device of a connection member.SOLUTION: A fixation function material 33 for fixing a fixation member 31 is fixed to a body 32 through at least one fixation function material insertion groove 35 formed in the fixation member 31, thereby fixing the fixation member 31 to the body, and a movement inhibition member 36 formed in the body 31 contacts with an inner peripheral surface of the fixation function material insertion groove 35. With an interval between the fixation function material insertion groove 35 formed in the fixation member 31 and the fixation function material 33, a position of the fixation member 31 can be suppressed from fluctuating.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a fluid control valve that controls the flow of fluid, a fluid device that handles fluid, and a fixing device that fixes a member to be connected to another device.

  For example, for the purpose of circulating the cooling water to the radiator to dissipate the heat of the cooling water for cooling the internal combustion engine to the outside, or circulating the high-temperature cooling water to the heating device to heat the passenger compartment The cooling water is distributed to various heat auxiliary machines using a fluid control valve.

  As a fluid control valve for distributing cooling water for cooling an internal combustion engine of an automobile to various heat auxiliary machines, for example, one described in Japanese Patent Laid-Open No. 2013-249810 (Patent Document 1) is known. ing. The fluid control valve described in Patent Document 1 switches the flow path of cooling water using a rotary valve.

  For example, at the time of start-up when the temperature of the cooling water is low, the cooling water is not returned to the radiator but returned to the cylinder jacket of the internal combustion engine to promote warming up of the internal combustion engine. Further, the opening degree of the rotary valve is adjusted in order to control the temperature of the cooling water so as to optimize the combustion of fuel in the internal combustion engine even after warming up.

  The rotary valve is provided, for example, in the case where a flow path is provided in the rotor, and is connected to an external flow path in a housing that accommodates the rotor. An opening communicating with the flow path is formed. According to the rotation angle of the rotor, the opening is opened and closed, and the opening is adjusted to adjust the flow rate of the cooling water.

JP 2013-249810 A

  By the way, in this kind of fluid control valve, the connection part assembly for flowing cooling water to other heat auxiliary machines is assembled | attached. The connection part assembly includes a connection pipe for flowing cooling water, and a fixing member that holds the connection pipe and fixes the connection pipe to the main body of the fluid control valve. The fixing member is formed with a groove-like fixing screw insertion groove (fixing function material insertion groove) into which a fixing screw as a fixing function material is inserted, and the fixing screw is inserted from the outside of the fixing member through the fixing screw insertion groove. Is screwed into a screw hole formed in the main body to fix the fixing member and the main body.

  Here, a slight gap is formed between the inner peripheral surface of the fixing screw insertion groove and the outer peripheral surface of the fixing screw. For this reason, if the axial tightening force (= fixing force) of the fixing screw is weakened due to the temperature change of the cooling water flowing through the connection pipe, it becomes difficult to fix the fixing member with the fixing screw. . Therefore, there is a problem that the position of the fixing member varies due to the gap between the inner peripheral surface of the fixing screw insertion groove of the fixing member and the outer peripheral surface of the fixing screw. For example, the above-described fluid control valve has a problem that it may adversely affect the sealing performance of the connection assembly.

  Although the above description is an example of the fluid control valve, other fluid devices that handle fluids that change in temperature and members that should be connected used in environments where the temperature changes are fixed to other devices. The fixing device also has a problem in that the position of the fixing member varies due to the gap between the fixing screw insertion groove of the fixing member and the fixing screw for the reasons described above.

  An object of the present invention is to suppress fluctuations in the position of the fixing member due to a decrease in the fixing force of the fixing function material due to a gap formed between the fixing function material insertion groove formed in the fixing member and the fixing function material. It is an object of the present invention to provide a novel fluid control valve, a fluid device, and a fixing device.

  A feature of the present invention is that a fixing functional material for fixing a fixing member is fixed to the main body through at least two fixing functional material insertion grooves formed in the fixing member, and the fixing member is fixed to the main body, and is formed in the main body. The movement preventing member is disposed so as to contact the inner peripheral surface of the fixed function material insertion groove.

  According to the present invention, the movement preventing member can suppress the fluctuation of the position of the fixing member in the gap between the fixing function material insertion groove formed in the fixing member and the fixing function material.

It is a block diagram of the cooling system of the internal combustion combustion as an example to which the fluid control valve of the present invention is applied. FIG. 2 is a specific exploded perspective view of the fluid control valve shown in FIG. 1. 1 is an overall perspective view of a fluid control valve according to a first embodiment of the present invention. FIG. 4 is an enlarged perspective view of an enlarged connection pipe (connection passage assembly) portion shown in FIG. 3 as viewed obliquely from above and before the connection pipe is fixed. It is the top view which looked at the fixed plane part to which the connection pipe formed in the housing main body shown in FIG. 4 is fixed from upper direction. FIG. 4 is an enlarged top view after the connection pipe is fixed, with one connection pipe portion shown in FIG. 3 enlarged and viewed from above. It is sectional drawing which shows the AA cross section of the movement prevention member shown in FIG. It is a whole perspective view of the water pump as a fluid apparatus which becomes the 2nd Embodiment of this invention. It is the top view which looked at the passage formation cover part of Drawing 8 from the upper surface. It is the expansion perspective view which expanded the fixed part of the channel | path formation cover shown in FIG. 8, and was seen from diagonally upward. It is the top view which expanded the connection pipe (connection channel assembly) of the conventional fluid control valve, and was seen from the upper direction. It is sectional drawing of the state which fixed the connection pipe shown in FIG. 11 to the housing main body of the fluid control valve.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to the following embodiments, and various modifications and application examples are included in the technical concept of the present invention. Is also included in the range.

  Before describing a specific embodiment of the present invention, the configuration of a fluid control valve will be briefly described. In the following description, a case where cooling water of an internal combustion engine is used as a heat medium is exemplarily shown.

  In FIG. 1, cooling water is supplied to a cylinder jacket of the internal combustion engine 01 from a cooling water pump 02, and the cooling water that has cooled the cylinder jacket is sent to the fluid control valve 10, and a part thereof is constantly circulated through a thermostat. It is returned again to the suction side of the cooling water pump 02 for use. Further, the remaining cooling water is sent to the heating auxiliary equipment such as the heating device 03, the radiator 04, and the oil cooler 05. These heat auxiliaries are shown as examples, and other heat auxiliaries may be used.

  The distribution of the cooling water to these heat auxiliaries is controlled by the electronic channel switching means 06. For example, water temperature information from a water temperature sensor 07 provided in the fluid control valve 10, operation state information of the internal combustion engine 01, operation state information of various operation devices in the passenger compartment, and the like are input to the electronic flow path switching unit 06. Thus, the flow path to each heat auxiliary machine is switched in accordance with the control signal calculated by the electronic flow path switching means 06.

  As will be described later, the fluid control valve 10 incorporates an electric motor that functions as a drive mechanism, and this electric motor has its rotational position controlled by a control signal from the electronic channel switching means 06. . A rotor is fixed to the electric motor, and by rotating the rotor, cooling water is caused to flow through the communication passages connected to the respective heat auxiliary machines formed in the fluid control valve 10, and cooling water from the internal combustion engine is supplied to the electric motor. It is distributed to heat accessories.

  FIG. 2 shows a configuration in which the fluid control valve 10 is disassembled and viewed from an oblique direction in order to briefly explain the configuration of the fluid control valve 10. The housing body 11 is formed with a valve housing part for housing a hollow cylindrical rotor (valve body) 14 and a motor housing part 16 for housing an electric motor (= drive mechanism) 15. In addition, an electronic flow path switching unit 06 is fixed to the housing body 11 from the outside by a fixing bolt, and is configured as a so-called electromechanical integrated type. The housing body 11 is made of a synthetic resin, and is preferably made of a material mainly made of a polyphenylene sulfide resin (PPS), which is a thermoplastic resin, and has excellent heat resistance and cold resistance. It has chemical resistance.

  Furthermore, a connection pipe 12A connected to the cylinder jacket, a connection pipe 12B connected to the heating device 03, a connection pipe 12C connected to the radiator 04, and a connection pipe 12D connected to the oil cooler 05 are attached around the housing body 11. A cover 17 that covers the thermostat 13 is integrally formed with the connection pipe 12C. Here, a seal member 18 and a compression spring 19 that functions as an urging member are disposed between the housing body 11 and the connection pipes 12B to 12D.

  In other words, the seal member 18 and the compression spring 19 are disposed in the communication path formed in the housing body 11 in a state where the housing body 11 and the connection pipes 12B to 12D are assembled. The opened cross section is formed in a circular cylindrical shape, and the front end surface thereof is pressed and brought into contact with the outer peripheral wall portion 20 of the rotor 14 by the compression spring 19.

  The rotor 14 is formed in a bottomed cylindrical shape in which a blocking wall 22 is formed on one side and an opening 28 is formed on the other side. A plurality of openings 21 are formed in the outer peripheral wall portion 20 forming a cylindrical portion of the rotor 14 and having a circular cross section. These openings 21 are selectively connected to the connection pipes 12 </ b> A to 12 </ b> D from the open portion 28. The cooling water CA flowing into the outer peripheral wall portion 20 is configured to flow out to the connection pipes 12A to 12D. Selection of the connection state of the opening part 21 formed in the outer peripheral wall part 20 and each connection pipe 12A-12D is combined suitably by the heat auxiliary machinery connected.

  The rotor 14 is also made of a synthetic resin, preferably made of a material mainly made of polyphenylene sulfide resin (PPS), which is a thermoplastic resin, and has excellent heat resistance and cold resistance, and excellent resistance to heat. It has chemical properties. Therefore, it is suitable for a cooling water system of an internal combustion engine that uses a coolant. Furthermore, if a composite material in which a glass filler (glass fiber) is kneaded with this is used, the strength can be further improved and the shape stability can be improved, and a highly accurate valve function can be provided.

  Further, the closing wall 22 of the rotor 14 is fixed to the rotating shaft 23 and is rotated in the valve storage portion of the housing body 11 in synchronization with the rotation of the rotating shaft 23. In synchronization with this rotation, the rotor 14 selects the connection relationship with the connection pipes 12A to 12D (switches the flow path). In addition, since the opening part 21 can control the overlapping degree with the opening of the sealing member 18 according to the rotation state of the rotor 14, it may be operated to control the flow rate.

  The electric motor 15 and the rotor 14 are connected by a worm gear mechanism. That is, a worm wheel 24 is fixed to the opposite end of the rotating shaft 23 to which the rotor 14 is fixed, and this worm wheel 24 is engaged with a worm 25 formed on one side of the worm shaft. A worm wheel 26 formed on the other side of the worm shaft is engaged with a worm 27 fixed to the electric motor 15. Therefore, when the electric motor 15 rotates, this rotation is transmitted to the rotating shaft 23 via the worm 27 ⇒ worm wheel 26 ⇒ worm 25 ⇒ worm wheel 24, and finally the rotor 14 is rotated.

  Further, a cover provided with the electronic flow path switching means 06 is fixed to the housing body 11 so as to cover the electric motor 15 and the worm gear mechanism. A control signal from the electronic flow path switching unit 06 is given to the electric motor 15 so as to perform a predetermined rotation operation.

  In the fluid control valve 10 having the above configuration, a conventional configuration for fixing the connection pipe 12A to the housing body 11 will be briefly described.

  11 and 12, the connecting pipe 12A is provided with a pipe fixing portion 50, and two fixing screw insertion grooves 51 are formed. The pipe fixing part 50 is made of a synthetic resin such as polyphenylene sulfide resin (PPS) which is the thermoplastic resin described above. The pipe fixing portion 50 is fixed to a fixing portion 52 formed integrally with the housing body 11. In this case, a large-diameter portion 53 </ b> A of a fixing screw 53 made of an iron-based metal is formed on the periphery of the fixing screw insertion groove 51. The pipe fixing portion 50 and the fixing portion 52 are firmly fixed by engaging and fixing the fixing screw 53 to the fixing portion 52. The large-diameter portion 53A is formed by the head of the fixing screw 53 or a washer. A gap G is formed between the outer peripheral surface of the fixing screw 53 and the inner peripheral surface of the fixing screw insertion groove 51, and the pipe fixing portion 50 can move by this gap.

  Since cooling water that causes temperature fluctuations flows through the connecting pipe 12A, the pipe fixing part 50 and the fixing part 52 made of synthetic resin and the fixing screw 53 made of iron-based metal are subject to deformation (expansion and contraction) due to heat. As a result, a phenomenon occurs in which the tightening force (axial force) between the large portion 53A of the fixing screw 53 and the pipe fixing portion 50 is reduced. As a result, the pipe fixing portion 50 can move with respect to the fixing portion 52 (so-called “backlash” is generated). For this reason, the contact state between an O-ring (not shown) provided at the tip of the connection pipe 12A and a communication path (not shown) formed in the fixing portion 52 of the housing body 11 fluctuates, and the sealing performance deteriorates. The phenomenon of doing.

  Therefore, in the present embodiment, a fluid control valve having a configuration as described below is proposed to cope with such a problem.

  Details of the first embodiment of the present invention will be described with reference to FIGS. 3 to 7. In the present embodiment, since the present invention is applied to the connection pipe 12 </ b> A, the connection pipe 12 </ b> A will be described below.

  FIG. 3 shows the appearance of the fluid control valve 10 according to this embodiment. The housing body 11 includes a connection pipe 12A connected to the cylinder jacket, a connection pipe 12B (not shown) connected to the heating device 03, and a radiator 04. A connection pipe 12C connected to the oil cooler 05 and a connection pipe 12D connected to the oil cooler 05 are provided.

  Cooling water flows into the fluid control valve 10 from the internal combustion engine 01, and the cooling water is distributed to the connection pipes 12A to 12D by the rotor 14 (see FIG. 2) provided inside the housing body 11. Yes. An electronic flow path switching means 06 is fixed to the top of the housing body 11 of the fluid control valve 10 to control the electric motor 15 (see FIG. 2) housed in the housing body 11.

  As can be seen from FIG. 3, the connection pipe 12 </ b> A is fixed to the housing body 11 as a connection part assembly 30. The connection part assembly 30 includes a connection pipe 12A as a “connection passage member” through which cooling water flows, and a “fixing member” that holds the connection pipe 12A and fixes the connection pipe 12A to the housing body 11 of the fluid control valve 10. And a pipe fixing portion 31. Note that the connection pipe 12A and the pipe fixing portion 31 may be formed separately and integrated, or the connection pipe 12A and the fixing member 31 may be integrally formed.

  The pipe fixing portion 31 is fixed to the fixing portion 32 of the housing body 11 by a fixing screw 33 that is a “fixing function material”. The fixing screw 33 made of iron-based metal is inserted into a fixing screw insertion hole (see FIG. 4) as a “fixed function material insertion groove” formed in the pipe fixing portion 31 and screwed into the fixing portion 32. Yes.

  Here, the pipe fixing portion 31 is made of a synthetic resin such as polyphenylene sulfide resin (PPS) which is the thermoplastic resin described above, and the fixing portion 32 formed on the housing body 11 is also made of a thermoplastic resin. It is made from a synthetic resin such as some polyphenylene sulfide resin (PPS).

  For this reason, the linear expansion coefficient of the pipe fixing part 31 and the fixing part 32 formed in the housing main body 11 is the same, and even if a temperature change occurs, the deformation state is relatively the same. There is an effect that can be done. Note that although the same material is used here, the material is not necessarily the same, and there is no problem if the difference in linear expansion coefficient is small. Further, since the fixing screw 33 is made of an iron-based metal, the linear expansion coefficient is smaller than the linear expansion coefficients of the pipe fixing portion 31 and the fixing portion 32.

  Next, a specific configuration of the connecting portion assembly 30 and the fixing portion 32 of the housing body 11 will be described with reference to FIGS. 4 and 5. FIG. 4 shows a state before fixing to the fixing portion 32 of the housing body 11. Is shown.

  Two fixing screw insertion groove forming portions 34 are formed in the pipe fixing portion 31, and a fixing screw insertion groove 35 is formed therein. The two fixing screw insertion grooves 35 are formed with an interval of about 90 °. A part of the inner peripheral surface of the fixing screw insertion groove 35 is open, and this open surface is connected to a parallel surface 35 </ b> P formed on the inner peripheral surface of the fixing screw insertion groove 35. The extended lines of the open lines Q along the parallel plane 35P are configured to cross each other, and the points at which the open lines Q cross each other are circles formed on the fixed portion 32 of the housing body 11 shown in FIG. It substantially coincides with the axis of the communication path 38 having a shape. The intersecting point does not necessarily have to coincide with the axis of the communication path 38.

  On the other hand, the fixing portion 32 of the housing body 11 to which the pipe fixing portion 31 is fixed is formed with a fixing flat portion 32F as shown in FIG. 5, and the end portion of the connection pipe 12A is inserted therein. A passage 38 is formed. A screw hole 37 into which the fixing screw 33 is screwed is formed in the fixing flat portion 32F around the communication path 38 at a position corresponding to the position of the fixing screw insertion groove 35 when the pipe fixing portion 31 is attached. . The formation positions of the two screw holes 37 are also formed at an interval of about 90 ° as in the case of the fixing screw insertion groove 35. Here, the screw hole 37 may be formed in a shape in which a spiral screw groove is cut in advance, or may be cut in a screw groove while tapping with the fixing screw 33.

  The formation position of the two screw holes 37 and the formation position of the fixing screw insertion groove 35 are not limited to 90 °, and are set to arbitrary angles corresponding to the formation positions of the screw hole 37 and the fixing screw insertion groove 35. be able to. By thus forming the two fixing screw insertion grooves 35 so as to extend in different directions, the movement (rattle) of the pipe fixing portion 31 in a specific direction can be suppressed.

  And the movement prevention member 36 which is the characteristic of this embodiment is formed in the fixed plane part 32F located in the outer side of the two screw holes 7, This movement prevention member 36 is with respect to the fixation plane part 32F. The axis is formed to be vertical. That is, it is a convex part rising in the vertical direction from the fixed plane part 32F.

  Since the movement preventing member 36 is formed integrally with the fixing portion 32 of the housing body 11, it is made of the same material as the housing body 11. Further, the movement blocking member 36 has a “T” -shaped cross section orthogonal to its own axis. The “T” -shaped movement blocking member 36 is press-fitted into the fixing screw insertion groove 35 described above.

  As shown in FIG. 5, the movement preventing member 36 is composed of one contact side A having a thickness “a” and one support side B having a thickness “b” in a cross section orthogonal to its own axis. In the vicinity of the center of the contact side A, the support side B is orthogonally coupled to form a “T” shape. Here, the relationship between the thicknesses of the respective sides is determined to be approximately b≈2a. When the pipe fixing portion 31 is attached, the support side B extends in the same direction as the open line Q, and the contact side A extends perpendicular to the open line Q, that is, perpendicular to the parallel surface 35P. The length of the contact side A orthogonal to the parallel surface 35P is formed slightly longer than the length between the pair of parallel surfaces 35P, and the contact side A is attached in such a manner that the contact side A is press-fitted into the parallel surface 35P. It is.

  Here, the reason why the thickness “a” of the contact side A is reduced is to facilitate press-fitting by reducing the contact area with the parallel surface 35P. The reason why the thickness “b” of the support side B is increased is to ensure the strength of the contact side A and to prevent the contact side A from being deformed by the force acting from the parallel surface 35P. . Further, the length of the support side B is shorter than that of the contact side A. This is because the movement preventing member 36 is accommodated in the fixing screw insertion groove 35, and this has the effect of reducing the external dimension in the release line Q direction. When the contact side A can be formed to have sufficient strength, the support side B can be omitted. In the present embodiment, it is sufficient that at least the contact side A is formed, and the support side B is not an essential constituent requirement.

  Next, a state where the connection part assembly 30 is assembled to the fixing part 32 of the housing body 11 will be described with reference to FIGS. 6 and 7. Although the fixing screw 33 is omitted in FIG. 6, the pipe fixing portion 31 is actually fixed to the fixing portion 32 formed integrally with the housing body 11 in the same manner as shown in FIG. 11. The In this case, the fixing screw 33 is fixed to the pipe fixing portion 31 by engaging the large diameter portion of the fixing screw 33 made of iron-based metal with the periphery of the fixing screw insertion groove 35 and screwing the fixing screw 33 to the fixing portion 32. The part 32 is firmly fixed. The large diameter portion of the fixing screw 33 is formed by the head of the fixing screw 33 or another washer. In this embodiment, a washer is used as in the second embodiment shown in FIG. Yes.

  As shown in FIGS. 6 and 7, when the fixing screw insertion groove forming portion 34 is assembled to the fixing portion 32 of the housing body 11, the parallel surface 35 </ b> P on the open side of the fixing screw insertion groove 35 contacts the movement blocking member 36. Side A is press-fitted. As a result, the fixing screw insertion groove forming portion 34 is forcibly prevented from moving in the direction along the contact side A. Here, since the two fixing screw insertion grooves 35 are arranged at an interval of about 90 °, the pipe fixing portion 31 is prevented from moving up, down, left and right on the paper surface of FIG.

  In this assembled state, the fixing screw 33 is inserted into the fixing screw insertion groove 35 and screwed into the screw hole 37, so that the large diameter portion (= washer) of the fixing screw 37 is fixed around the fixing screw insertion groove 35. The pipe fixing portion 31 is firmly fixed to the fixing portion 32 of the housing main body 11 by engaging with the screw insertion groove forming portion 34.

  For this reason, even if a phenomenon occurs in which the cooling water that causes temperature fluctuations flows in the connection pipe 12A, the tightening force (axial force) between the large diameter portion of the fixing screw 33 and the pipe fixing portion 31 is reduced. Since the movement preventing member 36 is press-fitted into the parallel surface 35P of the fixing screw insertion groove 35 formed in the fixing portion 31, the pipe fixing portion 31 cannot move. Therefore, the contact state between the O-ring provided at the end of the connection pipe 12A and the communication path 38 formed in the fixing portion 32 of the housing body 11 can be suppressed, and the sealing performance can be improved. Become.

  As described above, according to the present embodiment, the fixing screw for fixing the pipe fixing portion is screwed into the fixing portion of the housing body through at least two fixing screw insertion grooves formed in the pipe fixing portion to fix the pipe. The portion is fixed to the housing body, and the movement preventing member formed on the housing body is arranged so as to contact the inner peripheral surface of the fixing screw insertion groove.

  According to this configuration, the movement preventing member can suppress the fluctuation of the position of the pipe fixing portion in the gap between the fixing screw insertion groove formed in the pipe fixing portion and the fixing screw. is there.

  Next, a second embodiment of the present invention will be described. In the first embodiment, the present invention is applied to a fluid control valve. In the present embodiment, the present invention is applied to a fluid device that handles fluid.

  FIG. 8 shows the overall structure of a water pump assembly used in an internal combustion engine as a fluid device, and a pump main body 40, a suction passage 41 connected to the pump main body 40, and a discharge passage 42 are attached. It has been. A passage forming member 44 formed separately is fixed to the passage main body 43 of the discharge passage 42 by a fixing screw 45. Therefore, the fluid discharged from the pump main body 40 and flowing into the passage main body 43 flows out to other places through the passage forming member 44.

  FIG. 9 shows the passage forming member 44 as viewed from above, and the fixing screws are not shown. As shown in FIG. 9, the passage forming member 44 is formed with two main body fixing portions 46 at opposing positions, and the main body fixing portion 46 has a parallel surface as in the first embodiment. The provided fixing screw insertion groove 47 is formed. The opening directions of the two fixing screw insertion grooves 47 are opened in different directions as in the first embodiment, and the movement preventing member 48 is press-fitted into the fixing screw insertion grooves 47. The passage body 43 at a position corresponding to the fixing screw insertion groove 47 is formed with a screw hole 49 into which the fixing screw 45 is screwed.

  The movement preventing member 48 is formed in the passage main body 43 to which the passage forming member 44 is fixed, and is formed in a vertical direction from a plane on which the passage forming member 44 is attached. Since the specific shape is the same as that of the first embodiment, detailed description thereof is omitted. The passage body 43 and the passage forming member 44 are made of a synthetic resin such as polyphenylene sulfide resin (PPS), which is a thermoplastic resin, as in the first embodiment.

  FIG. 10 is an enlarged view of the vicinity of the main body fixing portion 46, and is engaged with the main body fixing portion 46 by a washer 45 A provided on the head of the fixing screw 45. A movement preventing member 48 is press-fitted into the fixing screw insertion groove 47 as in the first embodiment, and the movement of the main body fixing portion 46 is prevented. As a result, it is possible to prevent the passage forming member 44 from moving.

  Similarly to the first embodiment, in this embodiment, a fixing screw for fixing the body fixing portion of the passage forming member is screwed into the fixing portion of the passage body through fixing screw insertion grooves formed in two or more body fixing portions. Accordingly, the main body fixing portion is fixed to the passage main body, and the movement preventing member formed on the passage main body is arranged so as to contact the inner peripheral surface of the fixing screw insertion groove.

  According to this configuration, the movement preventing member can suppress the fluctuation of the position of the main body fixing portion in the gap between the fixing screw insertion groove formed in the main body fixing portion and the fixing screw. is there.

  Next, a third embodiment of the present invention will be described. In the first embodiment, the present invention is applied to a fluid control valve, and in the second embodiment, the present invention is applied to a fluid device that handles fluid. On the other hand, the present embodiment is an application of the present invention to a general fixing device that is used in an environment where the temperature changes and fixes a member to be connected to another device to be fixed. The configuration is the same as that of the first embodiment.

  In the present embodiment, the explanation with reference to the drawings is omitted, but as can be seen from FIGS. 4 to 7, the fixing part assembly corresponds to the “connection member” corresponding to the connection pipe 12 </ b> A and the pipe fixing part 31. It is comprised from the "fixing member" which fixes a connection member to the other apparatus (= fixed apparatus) which should be fixed. The fixing member is fixed to a fixing portion of the fixed device with a fixing screw. A fixing screw insertion groove having a parallel surface is formed in the fixing member, and a movement blocking member formed in a fixing portion of the fixed device is press-fitted into the fixing screw insertion groove. Here, the “fixing member” may be formed integrally with the “connection member”. In this case, as in the second embodiment, the “connection member” is a “fixing portion” that is a fixing member. Is formed.

  In the present embodiment, similarly to the first and second embodiments, the fixing screw for fixing the fixing member is screwed into the fixing portion of the fixed device through at least two fixing screw insertion grooves formed in the fixing member. Thus, the fixing member is fixed to the fixed device, and the movement preventing member formed on the fixed device is arranged so as to contact the inner peripheral surface of the fixing screw insertion groove.

  According to this configuration, the movement preventing member can suppress the fluctuation of the position of the fixing member in the gap between the fixing screw insertion groove formed in the fixing member and the fixing screw.

  In addition, this invention is not limited to above-described embodiment, Various modifications are included. For example, the above-described embodiment has been described in detail for easy understanding of the present invention, and is not necessarily limited to one having all the configurations described. Further, a part of the configuration of an embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of an embodiment. In addition, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

  DESCRIPTION OF SYMBOLS 10 ... Fluid control valve, 11 ... Housing main body, 12A, 12B, 12C, 12D ... Connection pipe, 13 ... Thermostat, 14 ... Rotor, 15 ... Electric motor, 16 ... Motor storage part, 17 ... Cover, 18 ... Seal member, DESCRIPTION OF SYMBOLS 19 ... Compression spring, 20 ... Outer peripheral wall part, 21 ... Opening part, 22 ... Blocking wall, 23 ... Rotating shaft, 24, 26 ... Worm wheel, 25, 27 ... Worm, 28 ... Opening part, 30 ... Connection part assembly , 31 ... pipe fixing part, 32 ... fixing part, 33 ... fixing screw, 34 ... fixing screw insertion groove forming part, 35 ... fixing screw insertion groove, 35P ... parallel surface, 36 ... movement blocking member (convex part), 37 ... screw holes, 38 ... communication path.

Claims (15)

A fluid control valve that controls the flow rate of a fluid whose temperature changes and circulates the fluid outside.
The fluid control valve has a connection portion assembly including a connection passage member that allows fluid to flow outside, and a fixing member for fixing the connection passage member to a housing body of the fluid control valve,
A fixing functional material for fixing the fixing member of the connection assembly to the housing main body is fixed to the housing main body through at least two fixing functional material insertion grooves formed in the fixing member, and the fixing member Is fixed to the housing body,
A fluid control valve, wherein a movement preventing member formed in the housing body is disposed so as to contact an inner peripheral surface of the fixed function material insertion groove. The fluid control valve according to claim 1,
The fluid control valve according to claim 2, wherein the two or more fixed function material insertion grooves are formed in different directions. The fluid control valve according to claim 1,
The fluid control valve according to claim 1, wherein the fixed functional member and the fixing member of the connection part assembly are made of materials having different linear expansion coefficients. The fluid control valve according to claim 3,
The fluid control valve according to claim 1, wherein the fixing member of the connection part assembly and the fixing part of the housing body are made of a material having a small difference in linear expansion coefficient. The fluid control valve according to claim 4.
The fluid control valve according to claim 1, wherein the fixing function material is a metal fixing screw, and the fixing member of the connection part assembly and the fixing part of the housing body are made of a synthetic resin. The fluid control valve according to claim 5,
A large-diameter portion is formed on the head of the fixing screw by the head itself or a washer, and the fixing member is engaged with the large-diameter portion by the fixing member of the connection portion assembly. And the fixing part of the housing body is fixed. The fluid control valve according to claim 6.
The fluid control valve according to claim 1, wherein the connection passage member and the fixing member are integrally made of synthetic resin. The fluid control valve according to any one of claims 1 to 7,
The fluid control valve, wherein the movement preventing member is integrally formed with the housing body and is press-fitted into the fixed functional material insertion groove. The fluid control valve according to claim 8,
The movement preventing member includes a contact side that contacts the fixed function material insertion groove and a support side that is coupled in the middle of the contact side, and the thickness of the contact side is shorter than the thickness of the support side. A fluid control valve characterized by comprising: The fluid control valve according to claim 9,
In the vicinity of the center of the contact side, the support side is coupled so as to be orthogonal to the contact side, and a cross section orthogonal to the axial direction of the movement preventing member is formed in a “T” shape. Fluid control valve. The fluid control valve according to claim 10.
The fluid control valve according to claim 1, wherein a length of the support side is shorter than a length of the contact side. A fluidic device through which a fluid of varying temperature flows,
The fluid device has a passage forming member for circulating fluid to the outside,
A fixing functional material for fixing a fixing portion formed in the passage forming member to the passage main body of the fluid device is fixed to the passage main body through at least two fixing functional material insertion grooves formed in the passage forming member. And fixing the fixing portion to the passage main body,
A fluid device, wherein a movement preventing member formed integrally with the passage main body is disposed so as to contact an inner peripheral surface of the fixed function material insertion groove. The fluidic device of claim 12, wherein
The fluid device is a water pump used for cooling an internal combustion engine. A fixing device for fixing a connection member to another device to be fixed (hereinafter referred to as a fixed device) used in an environment where the temperature changes,
A fixed functional material for fixing the connection member to the fixed device is fixed to the fixed device through at least two fixed functional material insertion grooves formed in the connection member, and the connection member is fixed to the fixed device. Fixed to
Further, the fixed function material insertion grooves are formed in different directions, and a movement preventing member formed integrally with the fixed device is formed on inner peripheral surfaces of the two or more fixed function material insertion grooves. A fixing device characterized by being arranged to contact. The fixing device according to claim 14, wherein
The fixed functional material is a fixing screw having a large-diameter portion at the head, the fixed functional material insertion groove is a fixing screw insertion groove into which the fixing screw is inserted, and the large-diameter portion of the fixing screw is the A fixing device, wherein the connecting member is fixed to the fixed device by engaging with a peripheral edge of a fixing screw insertion groove.

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