JP6838779B2 - Fluid control valve, fluid system, and fixing device - Google Patents

Description

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

For example, for the purpose of circulating the cooling water to the radiator to dissipate the heat of the cooling water that cools the internal combustion engine to the outside, or circulating the hot cooling water to the heating device to heat the passenger compartment. , The cooling water is distributed to various thermal accessories by using a fluid control valve.

As a fluid control valve that distributes the cooling water that cools the internal combustion engine of an automobile to various thermal accessories, for example, those described in Japanese Patent Application Laid-Open No. 2013-249810 (Patent Document 1) are known. ing. The fluid control valve described in Patent Document 1 switches the flow path of the cooling water by a rotary valve.

For example, at the time of starting when the temperature of the cooling water is low, the cooling water is returned to the cylinder jacket of the internal combustion engine as it is without passing through the radiator 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.

Then, this rotary valve is connected to an external flow path in a housing accommodating the rotor, for example, when a flow path is provided in the rotor and the angle of the rotor is open. An opening that communicates with the flow path is formed. The opening is opened and closed by the rotation angle of the rotor, and the opening is adjusted to adjust the flow rate of the cooling water.

Japanese Unexamined Patent Publication No. 2013-249810

By the way, in this kind of fluid control valve, a connection portion assembly for flowing cooling water to other thermal accessories is assembled. The connecting portion assembly is composed of a connecting pipe through which cooling water flows, and a fixing member that holds the connecting pipe and fixes the connecting pipe to the main body of the fluid control valve. A groove-shaped fixing screw insertion groove (fixing function material insertion groove) into which the fixing screw as the fixing function material is inserted is formed in the fixing member, and the fixing screw is passed through the fixing screw insertion groove from the outside of the fixing member. Is screwed into the 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 influence of the temperature change of the cooling water flowing through the connecting 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 fluctuates 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, which is not preferable. For example, the above-mentioned fluid control valve has a problem that the sealing property of the connection portion assembly may be adversely affected.

The above description is an example of a fluid control valve, but other fluid devices that handle fluids that change in temperature and members to be connected that are used in environments where the temperature changes are fixed to other devices. The fixing device also has a problem that the position of the fixing member fluctuates due to the gap between the fixing screw insertion groove and the fixing screw of the fixing member for the above-mentioned reason, which is not preferable.

An object of the present invention is to prevent the position of the fixing member from fluctuating in the gap formed between the fixing functional material insertion groove formed in the fixing member and the fixing functional material due to a decrease in the fixing force of the fixing functional material. To provide new fluid control valves, fluid devices, and fixing devices that can be used.

The feature of the present invention is that the fixing functional material for fixing the fixing member is fixed to the main body through at least two or more fixing functional material insertion grooves formed in the fixing member, and the fixing member is fixed to the main body and formed on the main body. The movement-preventing member is arranged so as to come into contact with the inner peripheral surface of the fixing functional material insertion groove.

According to the present invention, the movement blocking member can suppress the position of the fixing member from fluctuating in the gap between the fixing functional material insertion groove formed in the fixing member and the fixing functional material.

It is a block diagram of the cooling system of the internal combustion engine as an example to which the fluid control valve of this invention is applied. It is a concrete exploded perspective view of the fluid control valve shown in FIG. It is an overall perspective view of the fluid control valve which becomes 1st Embodiment of this invention. This is an enlarged perspective view of one connecting pipe (connecting passage assembly) portion shown in FIG. 3 as viewed from diagonally above, before fixing the connecting pipe. It is a top view of the fixed plane portion where the connection pipe formed in the housing body shown in FIG. 4 is fixed, as viewed from above. This is an enlarged top view of one connecting pipe portion shown in FIG. 3, which is viewed from above after the connecting pipe is fixed. It is sectional drawing which shows the AA cross section of the movement blocking member shown in FIG. It is an overall perspective view of the water pump as a fluid device which becomes the 2nd Embodiment of this invention. FIG. 8 is a top view of the passage forming cover portion of FIG. 8 as viewed from above. 8 is an enlarged perspective view of the fixed portion of the passage forming cover shown in FIG. 8 as viewed from diagonally above. It is a top view of the connection pipe (connection passage assembly) of the conventional fluid control valve enlarged and viewed from above. It is sectional drawing of the state in which the connection pipe shown in FIG. 11 is fixed to the housing body of a fluid control valve.

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

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

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

The distribution of the cooling water to these thermal accessories is controlled by the electron flow path switching means 06. For example, water temperature information from the water temperature sensor 07 provided in the fluid control valve 10, operating state information of the internal combustion engine 01, operation state information of various operating devices in the vehicle interior, and the like are input to the electronic flow path switching means 06. The flow path to each thermal auxiliary machine is switched according to the control signal calculated by the electronic flow path switching means 06.

As will be described later, the fluid control valve 10 has a built-in electric motor that functions as a drive mechanism, and the rotation position of this electric motor is controlled by a control signal from the electron flow path switching means 06. .. A rotor is fixed to the electric motor, and by rotating the rotor, cooling water flows through the communication passages connected to the heat accessories formed in the fluid control valve 10, and the cooling water from the internal combustion engine is supplied to each of them. It is distributed to thermal 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 main body 11 is formed with a valve accommodating portion for accommodating a hollow cylindrical rotor (valve main body) 14 and a motor accommodating portion 16 for accommodating an electric motor (= drive mechanism) 15. Further, the electronic flow path switching means 06 is fixed to the housing main body 11 from the outside by fixing bolts, and is configured as a so-called mechanical / electrical integrated type. The housing body 11 is 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. Has chemical resistance.

Further, 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 for covering the thermostat 13 is integrally formed on the connecting pipe 12C. Here, a seal member 18 and a compression spring 19 functioning as an urging member are arranged between the housing main body 11 and the connecting pipes 12B to 12D.

That is, in the state where the housing body 11 and the connecting pipes 12B to 12D are assembled, the seal member 18 and the compression spring 19 are arranged in the communication passage formed in the housing body 11, and both ends of the seal member 18 are both ends. The open cross section is formed in a circular tubular shape, and the tip 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 closing wall 22 is formed on one side and an opening portion 28 is formed on the other side. A plurality of openings 21 are formed in the outer peripheral wall portion 20 having a circular cross section forming the cylindrical portion of the rotor 14, and these are selectively connected to the respective connecting pipes 12A to 12D and are connected from the opening portion 28. The cooling water CA that flows into the outer peripheral wall portion 20 is configured to flow out to the connecting pipes 12A to 12D. The selection of the connection state between the opening 21 formed in the outer peripheral wall portion 20 and the connection pipes 12A to 12D is appropriately combined by the heat accessories to be connected.

The rotor 14 is also made of a synthetic resin, preferably made of a material whose main raw material is polyphenylene sulfide resin (PPS), which is a thermoplastic resin, and has excellent heat resistance, cold resistance, and excellent resistance to cold. It has chemical properties. Therefore, it is suitable for a cooling water system of an internal combustion engine that uses coolant. Further, if a composite material in which a glass filler (glass fiber) is kneaded is used, the strength can be further increased 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 accommodating 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 (switches the flow path) the connection relationship with each of the connection pipes 12A to 12D. Since the degree of overlap of the seal member 18 with the opening can be controlled by the rotational state of the rotor 14, the opening 21 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 the worm wheel 24 is meshed with the worm 25 formed on one of the worm shafts. Further, the worm wheel 26 formed on the other side of the worm shaft is meshed with the 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 rotates the rotor 14.

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

In the fluid control valve 10 having the above configuration, a conventional configuration in which the connection pipe 12A is fixed to the housing main body 11 will be briefly described.

In FIGS. 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 portion 50 is made of a synthetic resin such as the above-mentioned thermoplastic resin, polyphenylene sulfide resin (PPS). The pipe fixing portion 50 is fixed to the fixing portion 52 integrally formed with the housing main body 11. In this case, the large diameter portion 53A of the fixing screw 53 made of iron-based metal is formed on the peripheral edge of the fixing screw insertion groove 51. By engaging and screwing the fixing screw 53 into the fixing portion 52, the pipe fixing portion 50 and the fixing portion 52 are firmly fixed. The large diameter portion 53A is formed of 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 be moved by this gap.

Since cooling water that causes temperature fluctuations flows through the connecting pipe 12A, the pipe fixing portion 50 and the fixing portion 52 made of synthetic resin and the fixing screw 53 made of iron-based metal are deformed (expanded and contracted) by 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 “play” occurs). For this reason, the contact state between the O-ring (not shown) provided at the tip of the connecting pipe 12A and the communication passage (not shown) formed in the fixing portion 52 of the housing body 11 fluctuates, and the sealing property deteriorates. Occurs the phenomenon of

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

The details of the first embodiment of the present invention will be described with reference to FIGS. 3 to 7, but since the present invention is applied to the connecting pipe 12A in the present embodiment, the connecting pipe 12A will be described below.

FIG. 3 shows the appearance of the fluid control valve 10 according to the present embodiment. The housing main 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 connecting pipe 12C connected to the oil cooler 05 and a connecting pipe 12D connected to the oil cooler 05 are provided.

Further, cooling water flows into the fluid control valve 10 from the internal combustion engine 01, and the cooling water is distributed to the connecting pipes 12A to 12D by the rotor 14 (see FIG. 2) provided inside the housing body 11. There is. Further, 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 an electric motor 15 (see FIG. 2) housed inside the housing body 11.

As can be seen from FIG. 3, the connecting pipe 12A is fixed to the housing body 11 as the connecting portion assembly 30. The connecting portion assembly 30 holds a connecting pipe 12A as a "connecting passage member" through which cooling water flows, and a "fixing member" that holds the connecting pipe 12A and fixes the connecting pipe 12A to the housing body 11 of the fluid control valve 10. It is composed of a pipe fixing portion 31 as described above. The connecting pipe 12A and the pipe fixing portion 31 may be made separately and integrated, or the connecting pipe 12A and the fixing member 31 may be integrally molded.

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

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

Therefore, the linear expansion coefficients of the fixed portions 32 formed on the pipe fixing portion 31 and the housing main body 11 are the same, and even if a temperature change occurs, the deformed states are relatively the same, so that the fixed states of both are stabilized. There is an effect that can be done. Although the same material is used here, it is not necessarily the same material, and it does not matter if the difference in the coefficient of linear expansion is small. Further, since the fixing screw 33 is made of iron-based metal, the linear expansion coefficient is smaller than the linear expansion coefficient of the pipe fixing portion 31 and the fixing portion 32.

Next, the specific configuration of the connecting portion assembly 30 and the fixing portion 32 of the housing main body 11 will be described with reference to FIGS. 4 and 5, but FIG. 4 shows a state before fixing to the fixing portion 32 of the housing main 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 the parallel surface 35P formed on the inner peripheral surface of the fixing screw insertion groove 35. The extension lines of the open lines Q along the parallel surface 35P are configured to intersect each other, and the points where the open lines Q intersect are circles formed in the fixed portion 32 of the housing body 11 shown in FIG. It substantially coincides with the axis of the communication passage 38 of the shape. It should be noted that the intersecting points do not necessarily have to coincide with the axis of the communication passage 38.

On the other hand, as shown in FIG. 5, the fixing portion 32 of the housing body 11 to which the pipe fixing portion 31 is fixed is formed with a fixed flat surface portion 32F, and the end portion of the connecting 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 fixed flat surface portion 32F around the communication passage 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 intervals of about 90 °, similarly to 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 the screw groove may be cut while tapping with a fixing screw 33.

The formation positions of the two screw holes 37 and 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 holes 37 and the fixing screw insertion groove 35. be able to. By forming the two fixing screw insertion grooves 35 so as to extend in different directions in this way, it is possible to suppress the movement (rattling) of the pipe fixing portion 31 in a specific direction.

A movement blocking member 36, which is a feature of the present embodiment, is formed in the fixed flat surface portion 32F located outside the two screw holes 7, and the movement blocking member 36 with respect to the fixed flat surface portion 32F. It is formed so that the axes are vertical. That is, it is a convex portion that rises vertically from the fixed flat surface portion 32F.

Since the movement blocking member 36 is integrally formed with the fixing portion 32 of the housing main body 11, it is made of the same material as the housing main 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 blocking member 36 is composed of one contact side A having a thickness of "a" and one support side B having a thickness of "b" in a cross section orthogonal to its own axis. The support side B is orthogonally connected to each other near the center of the contact side A to form a “T” shape. Here, the relationship between the thicknesses of each side is determined to be about 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 orthogonal to the open line Q, that is, orthogonal to the parallel surface 35P. The length of the contact side A orthogonal to the parallel surface 35P is formed to be slightly longer than the length between the pair of parallel surfaces 35P, and the contact side A is attached in a form of being press-fitted into the parallel surface 35P. 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. Further, the thickness "b" of the support side B is increased in order to secure the strength of the contact side A and to suppress the deformation of the contact side A due to 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 blocking member 36 is housed in the fixing screw insertion groove 35, which has the effect of reducing the external dimensions in the release line Q direction. If the contact side A can be formed so as 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 indispensable constituent requirement.

Next, a state in which the connecting portion assembly 30 is assembled to the fixing portion 32 of the housing main 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 integrally formed with the housing main body 11 as shown in FIG. To. In this case, a large diameter portion of the fixing screw 33 made of iron-based metal is engaged with the peripheral edge of the fixing screw insertion groove 35, and the fixing screw 33 is screwed into the fixing portion 32 to fix the pipe fixing portion 31. The portion 32 is firmly fixed. Although the large diameter of the fixing screw 33 is formed by the head of the fixing screw 33 or another washer, in the present embodiment, the washer is used as in the second embodiment shown in FIG. There is.

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 movement blocking member 36 comes into contact with the parallel surface 35P on the open side of the fixing screw insertion groove 35. 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 intervals of about 90 °, the pipe fixing portion 31 is prevented from moving up, down, left, and right on the paper surface of FIG.

Then, in this assembled state, by inserting the fixing screw 33 into the fixing screw insertion groove 35 and screwing it into the screw hole 37, the large diameter portion (= washer) of the fixing screw 37 is fixed around the fixing screw insertion groove 35. Engaging with the screw insertion groove forming portion 34, the pipe fixing portion 31 is firmly fixed to the fixing portion 32 of the housing body 11.

Therefore, even if a phenomenon occurs in which the tightening force (axial force) between the large diameter portion of the fixing screw 33 and the pipe fixing portion 31 is reduced due to the flow of cooling water that causes temperature fluctuation in the connecting pipe 12A, the pipe Since the movement blocking 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, it is possible to suppress fluctuations in the contact state between the O-ring provided at the end of the connecting pipe 12A and the communication passage 38 formed in the fixing portion 32 of the housing body 11, and to improve the sealing performance. 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 or more 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 blocking member formed on the housing body is arranged so as to come into contact with the inner peripheral surface of the fixing screw insertion groove.

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

Next, a second embodiment of the present invention will be described. The first embodiment applies the present invention to a fluid control valve, but the present embodiment applies the present invention to a fluid device that handles a fluid.

FIG. 8 shows the overall configuration of a water pump assembly used for an internal combustion engine as a fluid system, and a pump main body 40, a suction passage 41 connected to the pump main body 40, and a discharge passage 42 are attached. Has been done. 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 to the passage main body 43 flows out to other places through the passage forming member 44.

FIG. 9 shows the passage forming member 44 viewed from above, and the display of the fixing screw is omitted. As shown in FIG. 9, the passage forming member 44 is formed with two main body fixing portions 46 at opposite positions, and the main body fixing portion 46 is provided with parallel surfaces as in the first embodiment. A provided fixing screw insertion groove 47 is formed. The opening directions of the two fixing screw insertion grooves 47 are different from each other as in the first embodiment, and the movement blocking member 48 is press-fitted into the fixing screw insertion grooves 47. A screw hole 49 into which the fixing screw 45 is screwed is formed in the passage main body 43 at a position corresponding to the fixing screw insertion groove 47.

The movement blocking member 48 is formed on the passage body 43 to which the passage forming member 44 is fixed, and is formed in the direction perpendicular to the plane to which the passage forming member 44 is attached. Since the specific shape is the same as that of the first embodiment, detailed description thereof will be omitted. Further, 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 45A provided on the head of the fixing screw 45. A movement blocking member 48 is press-fitted into the fixing screw insertion groove 47 as in the first embodiment to prevent the main body fixing portion 46 from moving. As a result, it is possible to prevent the passage forming member 44 from moving.

In this embodiment as in the first embodiment, the fixing screws for fixing the main body fixing portions of the passage forming member are screwed into the fixing portions of the passage main body through the fixing screw insertion grooves formed in the two or more main body fixing portions. The main body fixing portion is fixed to the passage main body, and the movement blocking member formed in the passage main body is arranged so as to come into contact with the inner peripheral surface of the fixing screw insertion groove.

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

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

Although the description quoting the drawings is omitted in the present embodiment, as can be seen from FIGS. 4 to 7, the fixed portion assembly corresponds to the “connecting member” corresponding to the connecting pipe 12A and the pipe fixing portion 31. It is composed of a "fixing member" that fixes the connecting member to another device to be fixed (= fixed device). The fixing member is fixed to the fixing portion of the device to be fixed by a fixing screw. A fixing screw insertion groove having a parallel surface formed therein is formed in the fixing member, and a movement blocking member formed in the fixing portion of the device to be fixed is press-fitted into the fixing screw insertion groove. Here, the "fixing member" may be integrally formed with the "connecting member", and in this case, as in the second embodiment, the "fixing portion" which is a fixing member is attached to the "connecting member". Is formed.

In this embodiment as in the first and second embodiments, the fixing screws for fixing the fixing member are screwed into the fixing portion of the device to be fixed through at least two or more fixing screw insertion grooves formed in the fixing member. The fixing member is fixed to the device to be fixed, and the movement blocking member formed on the device to be fixed is arranged so as to come into contact with the inner peripheral surface of the fixing screw insertion groove.

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

The present invention is not limited to the above-described embodiment, and includes various modifications. For example, the above-described embodiment has been described in detail in order to explain the present invention in an easy-to-understand manner, and is not necessarily limited to the one including all the described configurations. Further, it is possible to replace a part of the configuration of one embodiment with the configuration of another embodiment, and it is also possible to add the configuration of another embodiment to the configuration of one embodiment. Further, it is possible to add / delete / replace a part of the configuration of each embodiment with another configuration.

10 ... Fluid control valve, 11 ... Housing body, 12A, 12B, 12C, 12D ... Connection pipe, 13 ... Thermostat, 14 ... Rotor, 15 ... Electric motor, 16 ... Motor housing, 17 ... Cover, 18 ... Seal member, 19 ... compression spring, 20 ... outer wall, 21 ... opening, 22 ... closed wall, 23 ... rotating shaft, 24, 26 ... worm wheel, 25, 27 ... worm, 28 ... opening, 30 ... connecting 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 ... continuous passages.

Claims (13)

A fluid control valve that controls the flow rate of a fluid whose temperature changes and distributes it to the outside.
The fluid control valve has a connecting portion assembly including a connecting passage member for circulating a fluid to the outside and a fixing member for fixing the connecting passage member to the housing body of the fluid control valve.
The fixing functional material for fixing the fixing member of the connecting portion assembly to the housing main body is fixed to the housing main body through at least two or more fixing functional material insertion grooves formed in the fixing member, and the fixing member is fixed. Is fixed to the housing body and
The movement blocking member formed on the housing body is integrally formed with the housing body and press-fitted into the inner peripheral surface of the fixing functional material insertion groove.
Further, the movement blocking member is composed of a contact side that contacts the fixing functional material insertion groove and a support side that is joined in the middle of the contact side, and the thickness of the contact side is formed to be shorter than the thickness of the support side. A fluid control valve characterized by being In the fluid control valve according to claim 1,
A fluid control valve characterized in that two or more of the fixing functional material insertion grooves are formed in different directions from each other. In the fluid control valve according to claim 1,
A fluid control valve characterized in that the fixing functional material and the fixing member of the connecting portion assembly are made of materials having different linear expansion coefficients from each other. In the fluid control valve according to claim 3,
A fluid control valve, wherein the fixing member of the connection portion assembly and the fixing portion of the housing body are made of a material having a small difference in linear expansion coefficient from each other. In the fluid control valve according to claim 4,
A fluid control valve characterized in that the fixing functional material is a metal fixing screw, and the fixing member of the connecting portion assembly and the fixing portion of the housing body are made of a synthetic resin. In the fluid control valve according to claim 5,
The head of the fixing screw, the head itself, or the large-diameter portion is formed by a washer, the large diameter portion engaged with the fixing member of the connecting portion assembly, and the fixing member A fluid control valve characterized in that the fixing portion of the housing body is fixed. In the fluid control valve according to claim 6,
A fluid control valve characterized in that the connecting passage member and the fixing member are integrally made of synthetic resin. In the fluid control valve according to claim 1,
Near the center of the contact side, the support side is joined so as to be orthogonal to the contact side, and a cross section orthogonal to the axial direction of the movement blocking member is formed in a "T" shape. Fluid control valve. In the fluid control valve according to claim 8,
A fluid control valve characterized in that the length of the support side is shorter than the length of the contact side. It is a fluid device through which a fluid whose temperature changes flows.
The fluid device has a passage forming member that allows fluid to flow to the outside, and also has a passage forming member.
A fixing functional material for fixing the fixing portion formed on the passage forming member to the passage main body of the fluid device is fixed to the passage main body through at least two or more fixing functional material insertion grooves formed on the passage forming member. , The fixing portion is fixed to the passage body, and
The movement blocking member integrally formed with the passage body is press-fitted into the inner peripheral surface of the fixing functional material insertion groove.
Further, the movement blocking member is composed of a contact side that contacts the fixing functional material insertion groove and a support side that is connected in the middle of the contact side, and the thickness of the contact side is formed to be shorter than the thickness of the support side. A fluid system characterized by being In the fluid system according to claim 10.
The fluid device is a water pump used for cooling an internal combustion engine. A fixing device used in an environment where the temperature changes, which fixes the connecting member to other equipment to be fixed (hereinafter referred to as fixed equipment).
The fixing functional material for fixing the connecting member to the fixed device is fixed to the fixed device through at least two or more fixing functional material insertion grooves formed in the connecting member, and the connecting member is fixed to the fixed device. Fixed to
The fixing functional material insertion grooves are formed in different directions from each other, and a movement blocking member integrally formed with the fixed device is press-fitted into the inner peripheral surfaces of two or more fixing functional material insertion grooves. ,
Further, the movement blocking member is composed of a contact side that contacts the fixing functional material insertion groove and a support side that is connected in the middle of the contact side, and the thickness of the contact side is formed to be shorter than the thickness of the support side. A fixing device characterized by being In the fixing device according to claim 12,
The fixing functional material is a fixing screw having a large diameter on the head, the fixing 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 said. A fixing device characterized in that the connecting member is fixed to the device to be fixed by engaging with the peripheral edge of the fixing screw insertion groove.

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