Flow path formation device

Abstract

A flow path formation device in which a fluid flows comprises three or more components (21, 22, 30). The three or more components include a first component (21), a second component (22), and a third component (30). The first component and the second component have a flow path in which the fluid flows. The third component is attached to the first and second components. The first component includes a first connection surface (211) that is joined to the second component. The second component includes a second connection surface (221) that is joined to the first connection surface. The second component is connected to the first component by connecting the second connection surface to the first connection surface.The third component is attached to the first component and the second component via a connection interface (23) where the first connection surface and the second connection surface are connected to each other.

Description

CROSS-REFERENCE TO RELATED REGISTRATION

[0001] This application is based on Japanese patent application No. 2023-062945, filed on April 7, 2023, the contents of which are hereby incorporated by reference. TECHNICAL AREA

[0002] The present disclosure relates to a flow path formation device. BACKGROUND

[0003] Conventionally, a pump device with a multi-way valve is used in thermal management systems in vehicles (e.g., patent literature 1). In the pump device described in patent literature 1, a flow path forming device comprises an integrated plate body with a plurality of flow paths, a first end plate fixed to and connected with one side of the integrated plate body, and a second end plate fixed to and connected with the other side of the integrated plate body. The first end plate is connected to a multi-way valve. The second end plate is connected to a three-way proportional valve. Thus, the flow path forming device allows a fluid to flow into or out of the multi-way valve or the three-way proportional valve. LITERATURE IN THE STATE OF THE TECHNOLOGY PATENT LITERATURE

[0004] Patent Literature 1: CN 115388193 A SUMMARY OF THE INVENTION

[0005] If a flow path formation device comprises multiple components and connectors, some of which are joined to form an assembled component, the interface between the components is subjected to loads such as the weight of the assembled component itself, the weight of another component attached to the assembled component, and the weight of any fluid flowing within the device. If the flow path formation device is installed in a vehicle, the interface between the components is additionally subjected to stresses due to vehicle vibrations. Based on a detailed investigation by the inventor, it was determined that the stresses applied to the interface can be a contributing factor to its failure.One objective of the present disclosure is to provide a flow path formation device capable of preventing interface breakage of an assembled component.

[0006] According to one aspect of the present disclosure, a flow path forming device in which a fluid flows comprises three or more components. The three or more components include a first component, a second component, and a third component. The first component and the second component form a flow path in which the fluid flows. The third component is attached to the first component and the second component. The first component includes a first connecting surface that is joined to the second component. The second component includes a second connecting surface that is joined to the first connecting surface. The second component is connected to the first component by joining the second connecting surface to the first connecting surface.The third component is attached to the first and second components via an interface where the first connecting surface and the second connecting surface are connected to each other.

[0007] Accordingly, the strength of the interface where the first and second components are joined is improved by the third component mounted across the interface, thereby increasing the overall stiffness of the flow path formation device. Even if loads occur that separate the first and second components at the interface, fracture at the interface can thus be prevented.

[0008] A reference numeral in parentheses attached to each component or the like indicates an example of the correspondence between the component or the like and a specific component or the like described in the embodiments below. BRIEF DESCRIPTION OF THE DRAWINGS Fig. Figure 1 is a top view of a flow path formation device according to a first embodiment. Fig. Figure 2 is a side view of the flow path formation device according to the first embodiment. Fig. Figure 3 is a top view of the flow path formation device before a valve is attached to the flow path formation device according to the first embodiment. Fig. Figure 4 is a side view of the flow path formation device before the valve is attached to the flow path formation device according to the first embodiment. Fig. Figure 5 is a schematic view illustrating means for attaching the valve to an enclosure according to the first embodiment. Fig. Figure 6 is an enlarged view of Section VI from Fig. 5. Fig. Figure 7 is a view illustrating the distance between the valve holes and the distance between the housing holes. Fig. Figure 8 is an enlarged view of Section VIII of Fig. 7. Fig. Figure 9 is a side view illustrating a comparative example where a valve cannot be attached to an enclosure via an interface. Fig. Figure 10 is a schematic view illustrating means for attaching a valve to an enclosure according to a second embodiment. Fig. Figure 11 is a side view of a flow path formation device according to a third embodiment. Fig. Figure 12 is a diagram illustrating the sizes of a claw part and a fitting part. EXECUTIONAL FORMS FOR IMPLEMENTING THE INVENTION

[0009] Embodiments of the present disclosure are described below with reference to the drawings. In the following embodiments, components that are identical or equivalent to those described in the preceding embodiments are identified by the same reference numerals, and a description of the identical or equivalent components may be omitted. If only some of the components are described in an embodiment, the components described in the preceding embodiment may be applied to the other parts of the components. The following embodiments may be partially combined with one another, even if such a combination is not expressly described, as long as no disadvantages are associated with such a combination. First embodiment

[0010] The present embodiment is described with reference to the Fig. Described in Figures 1 to 9. A flow path forming device 10 of the present disclosure is applicable to a fluid control system installed, for example, in an electric car, which is a vehicle. The fluid control system is a heat distribution system that appropriately distributes the heat generated by a cooling circuit and the heat generated by various heat-generating devices to the various devices requiring heat via a fluid that serves as a heat transfer medium. The flow path forming device 10 is used to direct the fluid to the various devices that require heat. The fluid flowing within the flow path forming device 10 is a coolant. The coolant can be an antifreeze, but it can also be another liquid that contains water, other than antifreeze.

[0011] As in the Fig. 1 and Fig. As illustrated in Figure 2, the flow path formation device 10 includes an enclosure 20 and a valve 30. The enclosure 20 has a hollow shape and is a distributor that forms a flow path through which the fluid flows. The enclosure 20 is formed, for example, by plastic injection molding. Inside the enclosure 20 is a flow path (not shown), and the fluid can flow from the flow path of the enclosure 20 into the valve 30 and from the valve 30 back into the flow path of the enclosure 20.

[0012] The enclosure 20 comprises a first enclosure 21 and a second enclosure 22, and the first enclosure 21 and the second enclosure 22 are assembled in a predetermined assembly direction. The valve 30 is attached to a predetermined section of the enclosure 20 in a direction that differs from the assembly direction in which the first enclosure 21 and the second enclosure 22 are mounted. The flow path forming device 10 in the present embodiment comprises the first enclosure 21, the second enclosure 22, and the valve 30. Fig. Figure 2 shows parts of the first enclosure 21 and the second enclosure 22, which are positioned behind the valve 30, with dashed lines to better illustrate the positional relationship between the first enclosure 21, the second enclosure 22 and the valve 30. In the present embodiment, the first enclosure 21 corresponds to a first component, the second enclosure 22 to a second component, and the valve 30 to a third component.

[0013] The first enclosure 21 has a hollow shape with a bottom and an opening that points away from the bottom. As in the Fig. As illustrated in Figures 1 to 4, the first enclosure 21 includes a first connecting surface 211 which is joined to the second enclosure 22, a first enclosure fastening section 212 to which the valve 30 is attached, and three flow path introduction sections 213 into which flow path sections 32 of the valve 30 described later are inserted.

[0014] The second enclosure 22 has a hollow shape with a bottom and an opening facing away from the bottom. The second enclosure 22 includes a second connecting surface 221, which is joined to the first enclosure 21, and a second enclosure fastening section 222 to which the valve 30 is attached.

[0015] The first connecting piece 211 is flat and has the opening of the first enclosure 21 opposite the bottom of the first enclosure 21. The second connecting surface 221 is flat and has the opening opposite the bottom of the second enclosure 22. Additionally, the enclosure 20 is assembled by connecting the first connecting surface 211, which has the opening of the first enclosure 21, and the second connecting surface 221, which has the opening of the second enclosure 22.

[0016] A connection interface 23 is defined as a surface that specifies a boundary between the first enclosure 21 and the second enclosure 22 in a state where the first connection surface 211 and the second connection surface 221 are joined together. The enclosure 20 contains the connection interface 23, which is created by joining the first connection surface 211 and the second connection surface 221. Since the enclosure 20 is joined by connecting the first surface 211 and the second surface 221, the flow path within the enclosure 20 is sealed. In other words, the first connection 21 and the second connection 22 constitute the flow path through which the fluid flows. The first connection surface 211 and the second connection surface 221 can be joined, for example, by fusing, adhesive bonding, or welding.

[0017] The following describes how in Fig. As illustrated in Figure 1 and the like, a direction in which the first enclosure 21 and the second enclosure 22 are assembled is designated as the first direction D1, and a direction perpendicular to the first direction D1 is designated as the second direction D2. The first direction D1 is a direction that intersects the connecting surface 23 and, more precisely, is perpendicular to the connecting surface 23. The first direction D1 corresponds to a normal direction of the surface. Additionally, as in Fig. 2 and the like illustrates a direction perpendicular to both the first direction D1 and the second direction D2, which is designated as the third direction D3.

[0018] In the present embodiment, for example, an example is described in which the flow path formation device 10 is installed in a vehicle such that the third direction D3 is a vertical direction, i.e., an up-down direction. The orientation of the flow path formation device 10 is an example. The orientation of the flow path formation device 10 when installed in a vehicle is not limited to the one described in the Fig. 1 and Fig. 2 illustrated orientation limited.

[0019] The first enclosure fastening section 212 of the first enclosure 21 projects from one side of the first enclosure 21 in the first direction D1. As in Fig. As illustrated in Figure 5, the first housing fastening section 212 includes a first housing hole 2121 into which a screw S is inserted. The screw S is a fastening device for attaching the valve 30 to the first housing 21. A first nut N1 is inserted into the first housing hole 2121 to be fastened to the screw S. The first nut N1 includes a first screw hole N11 with threaded grooves on an inner periphery into which the screw S is screwed.

[0020] One of the three flow path inlet sections 213 is an inlet that allows the fluid to flow into the flow path inside the housing 20, and the other two are outlets that allow the fluid to flow out of the flow path from inside the housing 20 to outside the housing 20. The three flow path inlet sections 213 have inlet openings into which the flow path sections 32 of the valve 30 can be inserted. Each of the inlet openings has a circular shape. The flow path sections 32 are inserted into the three flow path inlet sections 213, and the valve 30 is connected to the three flow path inlet sections 213.

[0021] The second enclosure fastening section 222 of the second enclosure 22 projects in the first direction D1 from the other side of the second enclosure 22. The second enclosure fastening section 222 is positioned such that it is surface-symmetrical with respect to the first enclosure fastening section 212 of the first enclosure 21, with the connection interface 23 serving as the plane of the surfaces. As shown in Fig. As illustrated in Figure 5, the second housing fastening section 222 includes a second housing hole 2221 into which a screw S is inserted for fastening the valve 30 to the second housing 22. A second nut N2 is inserted into the housing hole 2221 and fastened to the screw S. The second nut N2 includes a second screw hole N21 with threaded grooves on an inner periphery into which the screw S is screwed.

[0022] Each central axis of the first housing hole 2121, the first screw hole N11, the second housing hole 2221, and the second screw hole N21 extends in the second direction D2, which intersects the first direction D1. The valve 30 is fastened to each of the first housing 21 and the second housing 22 by screws S, which are screwed into each of the first nuts N1 and second nuts N2.

[0023] The valve 30, together with the housing 20, forms a flow path and switches the flow path of the fluid flowing through the fluid control system. The valve 30 can, for example, be a multi-way valve that includes a plurality of inlets and outlets (not shown) for the fluid. The valve 30 comprises a valve body 31, three tubular flow paths 32 projecting from the valve body 31, and two valve mounting sections e 33 for attaching the valve 30 to the housing 20.

[0024] The valve body 31 is a housing that forms an outer shell of the valve 30 and has a hollow shape. The valve body 31 contains the flow path inside and accommodates, for example, a switching element (not shown) that switches the flow path within the valve body 31.

[0025] One of the three sections of the flow path 32 allows the fluid to flow within the valve body 31, and the other two allow the fluid flowing within the valve body 31 to flow outwards from the valve body 31. Since the three flow path sections 32 are each inserted into the three flow path inlet sections 213 of the first housing 21, and the flow path within the valve body 31 is connected to the flow path within the housing 20, the valve 30 together with the housing 20 forms the flow path.

[0026] The valve mounting sections e 33, to which the screws S for fastening the valve 30 to the housing 20 are attached, have ribbed shapes and project from opposite sides of the valve body 31 in the first direction D1. The valve mounting sections e 33 include, for example, valve holes 331 through which the screws S are inserted. Hereinafter, a valve hole 331 of a valve mounting section 33 that projects from one side of the valve body 31 in the first direction D1 is referred to as the first valve hole 3311. Another valve hole 331 of a valve mounting section 33 that projects from the other side of the valve body 31 in the first direction D1 is referred to as the second valve hole 3312. The central axes of the first valve hole 3311 and the second valve hole 3312 extend in the second direction D2, which intersects the first direction D1.The first valve hole 3311 and the second valve hole 3312 correspond to a third screw hole.

[0027] The first valve hole 3311 is positioned such that, in the second direction D2, it faces the first housing hole 2121 of the first housing 21. Additionally, the second valve hole 3312 is positioned such that, in the second direction D2, it faces the second housing hole 2221 of the second housing 22. More precisely, the central axis of the first valve hole 3311 is aligned with the central axis of the first screw hole N11 of the first nut N1, which is inserted into the first housing hole 2121. The central axis of the second valve hole 3312 is aligned with the central axis of the second screw hole N21 of the second nut N2, which is inserted into the second housing hole 2221.

[0028] The screw S is inserted through the first valve hole 3311 to be inserted into the first housing hole 2121. Additionally, the other screw S is inserted through the second valve hole 3312 to be inserted into the second housing hole 2221. This attaches the valve 30 at one end of the housing 20 in the second direction D2 to the first housing 21 and to the second housing 22.

[0029] More precisely, as in the Fig. 1 and Fig. As illustrated in Figure 2, the valve 30 is attached to the first housing 21 and the second housing 22 on one side of the housings 20 in the second direction D2 by means of the screws S. In other words, the valve 30 is attached to the housing 20 via the connection interface 23 between the first connecting surface 211 of the first housing 21 and the second connecting surface 221 of the second housing 22, which are joined together.

[0030] Additionally, the flow path formation device 10 of the present embodiment includes the flow paths 32, which are inserted into the flow path introduction sections 213, and the valve 30 is attached to the housing 20. As shown in Fig. As illustrated in Figure 4, O-rings 40 are provided as sealing components between the outer peripheries of the flow path sections 32 and the inner peripheries of the flow path introduction sections 213 to prevent fluid leakage. The O-rings 40 are arranged such that they are pressed and elastically deformed between the outer peripheries of the flow path sections 32 and the inner peripheries of the flow path introduction sections 213.

[0031] Here, in the flow path formation device 10 of the present embodiment, as shown in Fig. Figure 6 illustrates a first valve diameter VL1, which is the inner diameter of the first valve hole 3311, larger by a predetermined amount than a first nut diameter NL1, which is the inner diameter of the first screw hole N11 of the first nut N1. Although not illustrated, the inner diameter of the second valve hole 3312 is larger by the predetermined amount than the inner diameter of the second screw hole N21 of the second nut N2. The reasons why the first valve diameter VL1 is larger than the first nut diameter NL1 and the inner diameter of the second valve hole 3312 is larger than the inner diameter of the second screw hole N21 are explained with reference to the Fig. 7 and Fig. 8 described.

[0032] When the first connecting surface 211 and the second connecting surface 221 are joined to form the enclosure 20, the distance between the center point of the first screw hole N11 in the first enclosure 21 and the center point of the second screw hole N21 in the second enclosure 22 may deviate from a predetermined design value. Additionally, the positions of the first screw hole N11 and the second screw hole N21 may deviate from predetermined design positions. Hereinafter, the distance between the center point of the first screw hole N11 and the center point of the second screw hole N21 is referred to as the enclosure hole spacing CL.

[0033] Factors causing the deviation of the enclosure hole spacing CL from the design value include, for example, errors due to a design flaw, such as surface roughness and flatness of the first connecting surface 211 and the second connecting surface 221, as well as assembly errors that occurred during manufacturing. Factors causing the deviation of the positions of the first screw hole N11 and the second screw hole N21 from their design positions include, for example, errors due to a design flaw in the first enclosure mounting section 212 and the second enclosure mounting section 222, as well as a manufacturing error that occurred during the threading of the first screw hole N11 and the second screw hole N21.For example, if the first joining surface 211 and the second joining surface 221 are joined by welding, variations in the molten metal of the first joining surface 211 and the second joining surface 221 can occur during the welding process. These variations can cause the housing hole spacing CL and the positions of the first screw hole N11 and the second screw hole N21 to deviate from the design values ​​and positions. As described above, the deviation in the housing hole spacing CL and the deviation in the positions of the first screw hole N11 and the second screw hole N21 are based on defects in the joint interface 23 formed by the first joining surface 211 and the second joining surface 221.

[0034] On the other hand, the positions of the first valve hole 3311 and the second valve hole 3312 of the valve 30 are adjusted such that the center axis of the first valve hole 3311 is aligned with the center axis of the first screw hole N11, and the center axis of the second valve hole 3312 is aligned with the center axis of the second screw hole N21. Additionally, a distance VL, which is the distance between the center point of the first valve hole 3311 and the center point of the second valve hole 3312, is adjusted to correspond to the design value of the housing hole spacing CL.

[0035] However, the distance of the valve hole VL may deviate from its design value, which is set equal to the design value of the housing hole spacing CL, due to, for example, a design error in the valve 30. Additionally, due to a design error in the valve 30, for example, the center axis of the first valve hole 3311 may not be aligned with the center axis of the first screw hole N11, or the center axis of the second valve hole 3312 may not be aligned with the center axis of the second screw hole N21.

[0036] Therefore, if the housing hole spacing CL or the valve hole spacing VL deviates from their specified design values, the housing hole spacing CL may not match the actual valve hole spacing VL. Additionally, if the positions of the first screw hole N11 and the first valve hole 3311 deviate from their specified design positions, the center axis of the first valve hole 3311 may not be aligned with the center axis of the first screw hole N11. If the positions of the second screw hole N21 and the second valve hole 3312 deviate from their specified design positions, the center axis of the second valve hole 3312 may not be aligned with the center axis of the second screw hole N21.

[0037] For example, it is assumed that the actual distance CL will be shorter than the specified design value due to a design flaw in the connection interface 23 when the first connection surface 211 and the second connection surface 221 are joined together to form the housing 20. On the other hand, it is assumed that the actual distance of the valve 30, the valve hole VL, will be longer than the specified design value due to a design flaw in the valve 30. Under such assumptions, as in Fig. As shown in Figure 8, the valve hole spacing VL is longer than the housing hole spacing CL.

[0038] It is further assumed here that the inner diameter of the first valve hole 3311 corresponds approximately to the inner diameter of the first screw hole N11 and that the inner diameter of the second valve hole 3312 corresponds approximately to the inner diameter of the second screw hole N21.

[0039] In this case, the valve 30 is first attached to the first housing 21 by inserting and screwing in the screw S into the first valve hole 3311 and the first screw hole N11. Then, as in Fig. Figure 8 shows the second valve hole 3312 being located away from the connection interface 23 in the first direction D1 from the position of the second screw hole N21. In this state, when the valve 30 is attached to the second housing 22 by inserting and screwing the screw S into the second valve hole 3312 and the second screw hole N21, loads that are in Fig. Figure 7, illustrated as hollow arrows, are applied to the connection interface 23. The loads can pull the first enclosure 21 and the second enclosure 22 apart.

[0040] Alternatively, the valve 30 can be installed on the first housing 21 and the second housing 22 in a state where the center axes of the first valve hole 3311 and the first screw hole N11 are not aligned, or the center axes of the second valve hole 3312 and the second screw hole N21 are not aligned. In this case, the loads applied to the connection interface 23 can occur not only in the first direction D1, but also in random directions that intersect the first direction D1, such as the third direction D3.

[0041] Such loads can separate the first connection surface 211 and the second connection surface 221 from each other, resulting in a break in the connection interface 23.

[0042] In contrast to these cases, in the flow path formation device 10 of the present embodiment, the first valve diameter VL1 of the first valve hole 3311 is larger than the first nut diameter NL1 of the first screw hole N11, and the inner diameter of the second valve hole 3312 is larger than the inner diameter of the second screw hole N21. Specifically, the first valve diameter VL1 is larger than the first nut diameter NL1 of the first screw hole N11 by an amount corresponding to an estimated error of the connection interface 23. Additionally, the inner diameter of the second valve hole 3312 is larger than the inner diameter of the second screw hole N21 by an amount corresponding to an estimated error of the connection interface 23.

[0043] For example, even if the second valve hole 3312 deviates from the second screw hole N21 in the first direction D1 and the third direction D3, the screw S can be inserted at a point that deviates from the central axis of the second valve hole 3312. As a result, the inner diameter of the second valve hole 3312, which was set based on the design error of the connection interface 23, can compensate for a deviation between the valve hole spacing VL and the housing hole spacing CL. When the valve 30 is attached to the second housing 22 with the screw S, this prevents the loads that pull the first housing 21 and the second housing 22 apart from acting on the connection interface 23.

[0044] In the case described above, screw S is inserted into the first valve hole 3311 and the first screw hole N11 to attach the valve 30 to the first housing 21, and then screw S is inserted into the second valve hole 3312 and the second screw hole N21 to attach the valve 30 to the second housing 22. However, the same result can also be achieved if screw S is inserted into the second valve hole 3312 and the second screw hole N21 to attach the valve 30 to the second housing 22, and then screw S is inserted into the first valve hole 3311 and the first screw hole N11 to attach the valve 30 to the first housing 21.In other words, even if the first valve hole 3311 deviates from the first screw hole N11 in the first direction D1 and the third direction D3, the deviation between the valve hole spacing VL and the housing hole spacing CL can be compensated for by the inner diameter of the first valve hole 3311. As described above, the first valve hole 3311 and the second valve hole 3312 serve as mounting adjustment sections that adjust the mounting position of the valve 30, which is attached to the first housing 21 and the second housing 22, both in the first direction D1 and in the third direction D3, which intersects the first direction D1.

[0045] As in the Fig. 5 and Fig. As shown in Figure 6, the outer diameter SL of the screw head S is sufficiently larger than the inner diameter of the first valve hole 3311 and the inner diameter of the second valve hole 3312. Consequently, the screw head S cannot be inserted into the first valve hole 3311 or the second valve hole 3312.

[0046] Additionally, in the flow path formation device 10 of the present embodiment, the flow path sections 32 are inserted into the flow path introduction section 213, and the valve 30 is attached to the housing 20. For example, the valve 30 deviates from a design position in the first direction D1 and is attached to the housing 20 with the screw S. The flow path sections 32 deviate in the first direction D1 according to the deviation of the valve 30 and are inserted into the flow path introduction sections 213.

[0047] Thus, each of the O-rings 40 provided between a flow path section 32 and a flow path inlet section 213 is unevenly elastically deformed in the first direction D1. The O-rings 40 can deteriorate if the unevenly and elastically deformed condition is maintained. The deterioration of the O-rings 40 can reduce the sealing performance between the flow path section 32 and the flow path inlet section 213 and cause fluid leakage between the flow path section 32 and the flow path inlet section 213.

[0048] In contrast, in the flow path formation device 10 of the present embodiment, the first valve bore 3311 and the second valve bore 3312 can be used to adjust a mounting position of the valve 30 attached to the first housing 21 and the second housing 22 in the first direction D1.

[0049] This makes it less likely that the mounting position of the valve 30 will deviate from the design position. Accordingly, it is less likely that the O-ring 40 will deform unevenly and elastically in the first direction D1. Therefore, fluid leakage between flow path section 32 and flow path inlet section 213 due to deterioration of the O-rings 40 can be reduced.

[0050] Additionally, for example, when the valve 30 is attached to the housing 20, the flow path sections 32 can be inserted into the flow path inlet sections 213 before the valve 30 is attached to the housing 20 with the screw S. In this case, the inner diameter of the first valve hole 3311 and the inner diameter of the second valve hole 3312 can compensate for the deviation, even if the distance between the valve hole VL and the distance between the housing holes CL do not match. Thus, the valve 30 can be attached to the housing 20 such that the attachment position of the valve 30 is close to the design position of the valve 30. Consequently, the O-rings 40 will be deformed less unevenly in the first direction D1 and in a direction that intersects the first direction D1 during the attachment of the valve 30.

[0051] As described above, the flow path formation device 10 of the present embodiment comprises the first enclosure 21 and the second enclosure 22, which form a flow path through which the fluid flows, as well as the valve 30, which is attached to the first enclosure 21 and the second enclosure 22. The first enclosure 21 has the first connecting surface 211, which is joined to the second enclosure 22. The second enclosure 22 includes the second connecting surface 221, which is joined to the first enclosure 21. The second connecting surface 221 is joined to the first connecting surface 211. In this way, the second enclosure 22 is joined to the first enclosure 21. The valve 30 is attached to the first housing 21 and the second housing 22 via the connection interface 23, which is formed by the first connecting surface 211 and the second connecting surface 221, which are joined together.

[0052] Accordingly, the valve 30, which is attached to the enclosure 20 via the connection surface 23, can improve the strength of the connection surface 23, which is a section where the first enclosure 21 and the second enclosure 22 are joined together, and improve the overall stiffness of the flow path formation device 10. Even if a load is applied to the connection interface 23 that separates the first enclosure 21 and the second enclosure 22, it can prevent the connection interface 23 from breaking.

[0053] As in Fig. As shown in Figure 9, the strength of the connection interface 23 cannot be improved by attaching the valve 30 if the flow path forming device 10 is configured in such a way that the valve 30 is not positioned above the connection interface 23 during the fastening of the valve 30 to the housing 20. Fig. As shown in Figure 9, the valve 30, for example, is only joined to and attached to the first housing 21. In this case, a load due to the weight of the valve 30 itself, which is attached to the housing 20, and a load due to the weight of the fluid flowing in the housing 20 and the valve 30 act on the connection interface 23. If additional components, such as the one shown in Figure 9, are also present, the load on the connection interface 23 increases. Fig. The container 50 shown, which is attached to the second enclosure 22, also exerts a load on the connection interface 23 due to the weight of these additional components.

[0054] The flow path formation device 10 of the present embodiment is mounted on an electric vehicle such that the third direction D3 is perpendicular to the first direction D1. In this case, the loads exerted on the connection interface 23 due to vibrations during operation of the electric vehicle occur in the third direction D3, i.e., the vertical direction. If no part is attached to the housing 20 across the connection interface 23, improving the strength of the connection interface 23 is difficult.

[0055] In contrast, the flow path formation device 10 can improve the strength of the connection interface 23 against the loads acting on the connection interface 23 in the third direction D3 due to the valve 30 attached to the housing 20 via the connection interface 23.

[0056] In the present embodiment, an example is described in which the valve 30 is the part that is attached to the housing 20 via the connection interface 23, but the present disclosure is not limited to this example. Various parts, such as an electric pump, a heat exchanger, and the reservoir 50, which can be attached to the housing 20 among the components of the control system with the flow path forming device 10, can be used as the part that is attached to the housing 20 via the connection interface 23.

[0057] According to the above embodiment, the following advantageous effects can be obtained.

[0058] (1) The flow path formation device 10 of the foregoing embodiment includes the first valve bore 3311 and the second valve bore 3312, which adjust the mounting position of the valve 30 in the first direction D1 and in the third direction D3, which intersects the first direction D1.

[0059] As described above, the housing hole spacing CL may deviate from the specified design value due to a defect in the connection interface 23, such as a design flaw or an assembly error, when the first connection surface 211 and the second surface 221 are joined to form the housing 20. Additionally, the positions of the first screw hole N11 and the second screw hole N21 may deviate from the specified design positions. In this case, if the valve 30 is attached to the first housing 21 and the second housing 22 based on the design value of the housing hole spacing CL, a load that pulls the first housing 21 and the second housing 22 apart may be exerted on the connection interface 23.

[0060] As a countermeasure, the flow path formation device 10 allows adjustment of the mounting position of the valve 30 in the first direction D1 and in the third direction D3 through the first valve hole 3311 and the second valve hole 3312. Even if the housing hole spacing CL and the positions of the first screw hole N11 and the second screw hole N21 deviate from the design value and their design positions, the forces caused by the deviation and exerted on the connecting surface 23 can be reduced. Accordingly, a fracture of the connecting surface 23 can be prevented.

[0061] (2) In the foregoing embodiment, the valve 30 is attached to the first housing 21 and the second housing 22 by screws S and includes the valve hole 331, into which one of the screws S is inserted. The first housing 21 includes the first nut N1 in the first screw hole N11, into which the screw S inserted through the valve hole 331 is inserted and secured. The second housing 22 includes the second nut N2 in the second screw hole N21, into which another of the screws S inserted through the valve hole 331 is inserted and secured. Each central axis of the valve hole 331, the first screw hole N11, and the second screw hole N21 extends in the first direction D1. The first valve hole 331 has an inner diameter that is larger by a predetermined amount than the inner diameter of the first screw hole N11.The second valve hole 3312 has an inner diameter that is larger by a predetermined amount than the inner diameter of the second screw hole N21. The first valve hole 3311 and the second valve hole 3312 incorporate a function that adjusts the mounting position of the valve 30 in the first direction D1 and the third direction D3.

[0062] Accordingly, if the housing hole spacing CL and the positions of the first screw hole N11 and the second screw hole N21 deviate from the design values ​​and positions, the amount of the deviation from the design values ​​and positions can be compensated for by the sizes of the first valve hole 3311 and the second valve hole 3312. Even if the housing hole spacing CL, the position of the first screw hole N11, and the position of the second screw hole N21 deviate from the design values ​​and positions in the first direction D1 and in the third direction D3, the stresses on the connecting surface 23 caused by the deviation can be reduced. Accordingly, a fracture of the connecting surface 23 can be prevented.

[0063] (3) In the foregoing embodiment, the predetermined amount is based on the error of the connection interface 23 where the first connection surface 211 and the second connection surface 221 are joined.

[0064] In other words, the sizes of the first valve hole 3311 and the second valve hole 3312 are defined based on the error of the connection interface 23, such as the design error and the assembly error of the first connection surface 211 and the second connection surface 221. As a result, the deviation of the housing hole spacing CL corresponding to the deviation of the connection interface 23 can be compensated for by the sizes of the first valve hole 3311 and the second valve hole 3312.

[0065] (4) In the foregoing embodiment, the flow path forming device 10 includes the flow path sections 32, which allow the fluid to flow between the valve 30 and a flow path formed by the first enclosure 21 and the second enclosure 22. The flow path forming device 10 further includes the flow path insertion sections 213, which are inserted into the flow path sections 32, and the O-rings 40, which prevent leakage of the fluid between the flow path sections 32 and the flow path insertion sections 213. The flow path sections 32 are inserted into the flow path insertion sections 213, thereby attaching the valve 30 to the first enclosure 21.

[0066] Accordingly, the valve 30 can be mounted on the housing 20, with the flow path sections 32 forming the flow path. Furthermore, the flow path forming device 10 of the present embodiment can adjust the mounting position of the valve 30 in the first direction D1. Even if the housing hole spacing CL deviates from the design value, the mounting position of the valve 30 is less likely to deviate from the design position. Thus, it is less likely that the O-rings 40 between the flow path sections 32 and the flow path entry sections 213 will be unevenly and elastically deformed, both in the first direction D1 and in a direction intersecting the first direction D1. Therefore, the deterioration of the O-rings 40 caused by them remaining in a state of uneven and elastic deformation can be reduced.The leakage of fluid between the flow path sections 32 and the flow path introduction sections 213 due to the deterioration of the O-rings 40 can be reduced.

[0067] (5) In the foregoing embodiment, the flow path formation device 10 is applied to an electric car, which is a vehicle. Additionally, a liquid is a coolant.

[0068] In a case where the liquid is the coolant, a load is exerted on the connection interface 23 due to the weight of the coolant flowing within the enclosure 20 and the valve 30. Thus, the load exerted on the connection interface 23 is likely to be greater than in a case where the liquid is a gas. Therefore, if the coolant flows within the flow path of the device 10, a configuration is preferable in which the valve 30 is mounted across the connection interface 23 at the first enclosure 21 and the second enclosure 22. Modification of the first embodiment

[0069] In the first embodiment described above, an example was described in which the inner diameter of the first valve hole 3311 is larger by the predetermined amount than the inner diameter of the first screw hole N11, and the inner diameter of the second valve hole 3312 is larger by the predetermined amount than the inner diameter of the second screw hole N21. However, the present disclosure is not limited to this example.

[0070] For example, as long as screw S can be inserted, the inner diameter of the first valve hole 3311 can be approximately equal to the inner diameter of the first screw hole N11. Additionally, as long as screw S can be inserted, the inner diameter of the second valve 3312 can be approximately equal to the inner diameter of the second screw hole N21. Furthermore, the inner diameter of the first valve hole 3311 can be larger than the inner diameter of the first screw hole N11 by the predetermined amount, while the inner diameter of the second valve hole 3312 is approximately equal to the inner diameter of the second screw hole N21. Furthermore, the inner diameter of the first valve hole 3311 can be approximately equal to the inner diameter of the first screw hole N11, while the inner diameter of the second valve hole 3312 is larger than the inner diameter of the second screw hole N21 by the predetermined amount. Second embodiment

[0071] Next, a second embodiment will be described with reference to Fig. 10. The present embodiment differs from the first embodiment in one part of a structure in which a valve 30 is attached to a first housing 21 and a second housing 22. The other configurations are the same as those of the first embodiment. Therefore, in the present embodiment, mainly the parts that differ from the first embodiment are described, while the description of the parts that are similar to the first embodiment can be omitted.

[0072] As in Fig. As shown in Figure 10, the flow path formation device 10 of the present embodiment comprises a bushing 70 and a collar 80 provided at the periphery of a screw S. The bushing 70 is an elastic section formed from an elastic material such as a resin and is elastically deformable by an externally applied force. The bushing 70 has a hollow cylindrical shape to accommodate an elastic section hole 71 through which the screw S is inserted. The elastic section hole 71 has a central axis extending in a second direction D2 that intersects a first direction D1. Additionally, the bushing 70 includes a recess 72 located approximately at the center of the outer circumference of the bushing 70 in the second direction D2. The recess 72 of the bushing 70 is inserted into a first valve hole 3311 of a valve mounting section 33.The recess 72 is formed by the inwardly recessed outer periphery of the socket 70.

[0073] The recess 72 of the bushing 70 is inserted into the first valve hole 3311. This positions the elastically deformable bushing 70 between the inner periphery of the first valve hole 3311 and the outer periphery of the screw S. The bushing 70 is positioned between one side of the bushing 70 in the second direction D2 and the screw S. The bushing 70 is positioned between the other side of the bushing 70 in the second direction D2 and a first housing fastening section 212.

[0074] The valve 30 of the present embodiment is attached to the first housing 21 and the second housing 22 by screws S which are inserted into elastic section bores 71 of the bushings 70.

[0075] The collar 80 is made of a material, such as metal, whose stiffness is greater than that of the bushing 70. The collar 80 includes a cylindrical tube 81 and a collar-shaped section 82. The collar-shaped section 82 projects from one end of the tube 81 in a direction extending radially outward from the central axis of the tube 81. The end of the tube 81 is directed away from the first housing fastening section 212 in the second direction D2.

[0076] The inner diameter of tube 81 is slightly larger than the outer diameter of screw S, and screw S can be inserted into tube 81. The outer diameter of tube 81 is approximately equal to the inner diameter of bushing 70, and tube 81 can be inserted into bushing 70. The diameter of tube 81 in the second direction D2 is shorter than the diameter of bushing 70 if bushing 70 is not elastically deformed in the second direction D2.

[0077] The ring-shaped section 82 has a ring-shaped plate form with an opening at its center, and the ring-shaped section 82 has a surface perpendicular to the second direction D2. The opening of the ring-shaped section 82 communicates with an interior of the tube 81.

[0078] The collar 80 includes the tube 81 inserted into the bushing 70, and the collar-shaped section 82 is positioned between the bushing 70 and the screw S in the second direction D2.

[0079] As described above, the flow path forming device 10 of the present embodiment includes bushings 70. The bushings 70 are made of an elastic material and include elastic section holes 71 into which the screws S are inserted. Each elastic section hole 71 includes a central axis extending in the second direction D2 and perpendicular to the first direction D1. The valve 30 is attached to the first housing 21 and the second housing 22 by means of the screws S inserted through the elastic section holes 71.

[0080] Even if the housing hole spacing CL and the positions of the first screw hole N11 and the second screw hole N21 deviate from their design values ​​and positions in both the first direction D1 and the third direction D3, the bushings 70 will be elastically deformed according to these deviations in both directions. Thus, the bushings 70 are able to compensate for the deviations of the housing hole spacing CL and the positions of the first screw hole N11 and the second screw hole N21 from their design values ​​and positions in both directions.

[0081] The positions at which a first connecting surface 211 and a second connecting surface 221 are joined may deviate in the second direction D2, for example, due to a design flaw or an assembly error. For instance, the positioning of the first connecting surface 211 relative to the second connecting surface 221 may deviate from its design position in the second direction D2. This deviation of the first connecting surface 211 and the second connecting surface 221 in the second direction D2 is caused by a defect in a connection interface 23 formed by the first connecting surface 211 and the second connecting surface 221.

[0082] In this situation, the bushings 70 are elastically deformed according to the deviation in the second direction D2, even if the first connecting surface 211 and the second connecting surface 221 deviate in the second direction D2. Accordingly, the deviation of the first connecting surface 211 and the second connecting surface 221 from their design positions in the second direction D2 can be absorbed by the bushings 70.

[0083] Even if the housing hole spacing CL and the positions of the first screw hole N11 and the second screw hole N21 deviate from their design values ​​and positions, or if the first connecting surface 211 and the second connecting surface 221 are deformed from their design positions, the loads applied to the connection interface 23 due to the deviations can be reduced. Accordingly, a breakage of the connecting piece 23 can be prevented.

[0084] In the present embodiment, when a coolant flows within an enclosure 20, the enclosure 20 can absorb heat from the coolant flowing through flow paths within the enclosure 20 and expand. In this case, the bushings 70 can be elastically deformed and absorb the expansion. Even if loads caused by the expansion of the enclosure 20 act on the connection interface 23, these loads can be reduced. Accordingly, a breakage of the connection interface 23 can be prevented.

[0085] According to the above embodiment, the following advantageous effects can be obtained.

[0086] (1) In the foregoing embodiment, the flow path forming device 10 includes the collar 80. The collar 80 is made of a material with greater stiffness than the bushing 70 and includes the tube 81 and the collar-shaped section 82. The collar 80 includes the tube 81 inserted into the bushing 70, and the collar-shaped section 82 is positioned between the bushing 70 and the screw S in the second direction D2.

[0087] The reasons why the flow path forming device 10 includes the collar 80 are described below. When the valve 30 is attached to the first housing mounting section 212 with the screw S, the bushing 70 is elastically deformed by the force applied to fasten the screw S and compressed in the direction in which the screw S is tightened, i.e., in the present embodiment, in the second direction D2. Therefore, if the flow path forming section 10 did not include the collar 80, it would be difficult to adjust the position of the valve 30 in the second direction D2.

[0088] In this situation, the flow path forming device 10 of the present embodiment includes the collar 80. Even if the bushing 70 is compressed by the force for fastening the screw S in the second direction D2, the tube 81 prevents the screw S from being tightened further. As a result, the collar 80 can limit the elastic deformation of the bushing 70 in the second direction D2. In the present embodiment, the collar 80 serves as a deformation limiting section that restricts the elastic deformation of the bushing 70 in a direction that intersects the first direction D1.

[0089] When the valve 30 is attached to the first housing 21 and the second housing 22 with the screw S, which is inserted into the bushings 70, it is correspondingly easy to adjust the position of the valve 30 in the second direction D2. Modification of the second embodiment

[0090] In the second embodiment described above, an example was described in which the flow path forming device 10 includes the collar 80, but the present disclosure is not limited to this example. For example, the flow path forming device 10 may not include the collar 80. Third embodiment

[0091] Next, a third embodiment will be described with reference to the Fig. 11 and Fig. 12. In the present embodiment, a structure in which a valve 30 is attached to a first housing 21 differs from a structure of the first embodiment. The other configurations are the same as those of the first embodiment. Therefore, in the present embodiment, mainly sections that differ from the first embodiment are described, and the description of sections that are similar to the first embodiment can be omitted.

[0092] As in Fig. As shown in Figure 11, a flow path forming device 10 includes two snap fasteners 90 to which the valve 30 is attached to the first housing 21. Each snap fastener 90 includes a claw part 91 and an engagement part 92 in which the claw part 91 engages. The two snap fasteners 90 are positioned on opposite sides of a valve mounting section 33 in a third direction D3. This pair of snap fasteners 90 attaches the valve 30 to the first housing 21 by fitting the claw part 91 into the engagement part 92.

[0093] Each snap connection 90 of the present embodiment includes the claw part 91 positioned on the valve 30 and the engagement part 92 positioned on the first housing 21. Each snap connection 90 can include the claw part 91 positioned on the first housing 21 and the engagement part 92 positioned on the valve 30. Additionally, the valve 30 and a second housing 22 are joined together using a screw S as described in the first embodiment.

[0094] The claw parts 91 of the snap fasteners 90 are positioned on opposite surfaces of the valve mounting section 33, pointing away from each other in the third direction D3. The valve mounting section 33 is positioned on one side of the valve 30 in a first direction D1. One of the claw parts 91 is located on one side of the valve mounting section 33 in the third direction D3 and projects from the valve mounting section 33 in the third direction D3. Another claw part 91 is located on the other side of the valve mounting section 33 in the third direction D3 and projects from the valve mounting section 33 in the third direction D3. The claw parts 91 have triangular plate shapes, the size of which decreases in the third direction D3 towards the first housing 21.

[0095] The engagement parts 92 of the snap fasteners 90 are provided on the first housing mounting section 212 and are each oriented towards the claw parts 91 in a second direction D2. The two claw parts 91 are provided on opposite sides of the valve mounting section 33 in a third direction D3. The engagement parts 92 have, as shown in Fig.Figure 12 shows thin rectangular plate shapes that project from the first housing 212 towards the valve 30. Additionally, each engagement part 92 includes a fitting part 921 into which a claw part 91 is fitted. The fitting part 921 is an opening that extends through the engagement part 92 in the third direction D3. Viewed in the third direction D3, the fitting part 921 is rectangular. The fitting part 921 is sized to accommodate the claw part 91. More precisely, the size of the fitting part 921 in the first direction D1 is smaller than the size of the claw part 91 in the first direction D1, and the size of the fitting part 921 in the second direction D2 is smaller than the size of the claw part 91 in the second direction D2. The fitting part 921, viewed along the third direction D3, can be trapezoidal.

[0096] Here, the size of the claw part 91 in the first direction D1 is referred to as the first claw length L1, the size of the claw part 91 in the second direction D2 as the second claw length L2, the size of the fitting part 921 in the first direction D1 as the first fit length L3, and the size of the fitting part 921 in the second direction D2 as the second fit length L4. The first fit length L3 is larger than the first claw length L1 by an amount corresponding to an estimated error of a connection interface 23. Additionally, the second fit length L4 is larger than the second claw length L2 by an amount corresponding to an estimated error of the connection interface 23.

[0097] Accordingly, even if the housing hole spacing CL deviates from its design value due to a defect in the connection interface 23, such as a design error or an assembly error of the first connection surface 211 and a second connection surface 221, the deviation from the design value can be compensated for by the size of the fitting part 921. Therefore, even if the housing hole spacing CL deviates from the design value in the first direction D1, the loads applied to the connection interface 23 due to the deviation can be reduced. Consequently, a fracture of the connection interface 23 can be prevented.

[0098] Additionally, in the present embodiment, the second fitting length L4 is greater than the second claw length L2. Consequently, a position of the valve 30 in the second direction D2 can be set using the fitting part 921. Modification of the third embodiment

[0099] In the preceding third embodiment, an example was described in which the valve 30 is attached to the first housing 21 by the pair of snap fasteners 90 and to the second housing 22 by the screw S. However, the present disclosure is not limited to this example. For instance, the valve 30 can be attached to the first housing 21 and the second housing 22, respectively, by two pairs of snap fasteners 90. Other embodiments

[0100] Although representative embodiments of the present disclosure have been described above, the present disclosure is not limited to these embodiments and can be modified in various ways, for example as follows.

[0101] In the preceding embodiments, the example described is one in which the connection interface 23 is located between the first connection surface 211 and the second connection surface 221, which are formed in a planar shape and are joined together. However, the present disclosure is not limited to this example. For instance, a connection interface 23 can be formed by a first connection surface 211 and a second connection surface 221, one of which has a protruding shape and the other a recessed shape, and which fit together.

[0102] The preceding embodiments described an example in which the flow path forming device 10 has a configuration where the mounting position of the valve 30 is adjustable in the first direction D1. However, the present disclosure is not limited to this example. A flow path forming device 10 may have a configuration in which the mounting position of a valve 30 is not adjustable in the first direction D1.

[0103] In the first embodiment described above, the inner diameter of a first valve bore 3311 is larger than the inner diameter of the first screw hole N11 by an amount corresponding to a defect in the connection interface 23. Furthermore, an example has been described in which the inner diameter of the second valve bore 3312 is larger than the inner diameter of the second screw hole N21 by an amount corresponding to a defect in the connection interface 23. Additionally, in the third embodiment described above, an example has been described in which the first fit length L3 is larger than the first claw length L1 by an amount corresponding to a defect in the connection surface 23, and the second fit length L4 is larger than the second claw length L2 by an amount corresponding to a defect in the connection surface 23. However, the present disclosure is not limited to this example.

[0104] The inner diameter of the first valve hole 3311 can be larger than the inner diameter of a first screw hole N11 by a predetermined amount, regardless of the error of the connecting surface 23. Additionally, the inner diameter of the second valve hole 3312 can be larger than the inner diameter of the second screw hole N21 by a predetermined amount, regardless of the error of the connecting surface 23. The first fitting length L3 can be larger than the first claw length L1 by a predetermined amount, regardless of the error of the connecting interface 23. Additionally, the second fitting length L4 can be larger than the second claw length L2 by a predetermined amount, regardless of the error of the connecting interface 23.

[0105] The preceding embodiments described an example in which the fluid flowing in the flow path of the flow path forming device 10 is the coolant. However, the present disclosure is not limited to this example. For instance, a fluid flowing in the flow path of the flow path forming device 10 could be a fluid other than the coolant, such as a gas or an oil.

[0106] The embodiments described above illustrate an example in which the flow path formation device 10 is installed in an electric car, which is a vehicle. However, the present disclosure is not limited to this example. For instance, the flow path formation device 10 can be used in a vehicle with an internal combustion engine as a power source or in a fluid control system used in a factory or a house.

[0107] In the embodiments described above, it is understood that the elements from which the embodiments are formed are not necessarily essential, except in cases where these elements are clearly indicated as essential, in particular in cases where these elements are generally considered to be obviously essential, and the like.

[0108] In the embodiments described above, the present disclosure is not limited to the specific number of components of the embodiments, except where special reference is made to numerical values ​​such as number, numerical values, quantities, areas and the like, more precisely where this is expressly indispensable and where it is generally obvious that this is limited to the specific number and the like.

[0109] In the embodiments described above, reference to the shape, positional relationship, and the like of a component and the like is not limited to the shape, positional relationship, and the like, except in cases where this is specifically stated, in which it is generally limited to a specific shape, positional relationship, and the like. Aspects of the present revelation

[0110] The revelation described above can be seen, for example, from the following characteristics. Aspect 1

[0111] A flow path formation device in which a fluid flows comprises three or more components (21, 22, 30). The three or more components include a first component (21), a second component (22), and a third component (30). The first component and the second component form a flow path in which the fluid flows. The third component is attached to the first and second components. The first component includes a first connection surface (211) that is joined to the second component. The second component includes a second connection surface (221) that is joined to the first connection surface. The second component is connected to the first component by connecting the second connection surface to the first connection surface.The third component is attached to the first component and the second component via a connecting surface (23) where the first connecting surface and the second connecting surface are connected to each other. Aspect 2

[0112] The flow path formation device according to aspect 1 includes a mounting adjustment section (N11, N21, 331, 70, 90). The mounting adjustment section is configured to set a mounting position of the third component in at least one of a surface normal direction and a direction that intersects the surface normal direction, the surface normal direction being perpendicular to the joining surface. Aspect 3

[0113] In the flow path formation device according to aspect 2, the third component is attached to the first and second components by screws (S) and includes third screw holes (331) into which the screws are inserted. The first component includes a first screw hole (N11) into which one of the screws, which fits into one of the third screw holes, is inserted and secured. The second component includes a second screw hole (N21) into which another of the screws, which fits into another of the third screw holes, is inserted and secured. The central axes of the first screw hole, the second screw hole, and the third screw holes extend in a direction that intersects the surface normal direction.The assembly adjustment section includes the first screw hole, the second screw hole and the third screw holes, wherein the inner diameters of the third screw holes are larger by a predetermined amount than at least one of the inner diameters of the first screw hole and the second screw hole. Aspect 4

[0114] The flow path formation device according to aspect 2 further includes a snap connection (90) by which the third component is attached to the first and second components. The snap connection (90) includes a claw part (91) and an engagement part (92). The engagement part includes a hollow insert (921) into which the claw part is fitted. The assembly adjustment section includes the snap connection in which a size of the insert is larger than a size of the claw part by a predetermined amount in at least one of the normal directions and in a predetermined direction that intersects the normal direction. Aspect 5

[0115] In the flow path formation device according to aspect 3 or 4, the predetermined amount is determined based on an error of the connection interface where the first connection surface and the second connection surface are joined together. Aspect 6

[0116] In the flow path formation device according to aspect 2, the third component is attached to the first and second components by screws (S). The mounting adjustment section includes elastic sections (70) made of an elastic material, which have elastic section holes (71) into which the screws are inserted. The central axes of the elastic section holes extend in a direction that intersects the surface normal direction. The third component is attached to the first and second components by the screws inserted into the elastic section holes. Aspect 7

[0117] In the flow path formation device according to aspect 6, the assembly adjustment section includes deformation limiting sections (80) configured to limit the elastic deformation of the elastic sections in a direction that crosses the surface normal direction. Aspect 8

[0118] In the flow path formation device according to one of aspects 2 to 7, the three or more components include flow path sections (32), flow path inlet sections (213), and sealing elements (40). The flow path sections allow a fluid to flow between the third component and the flow path formed by the first and second components. The flow path sections are inserted into the flow path inlet sections (213). The sealing elements (40) are configured to prevent fluid leakage between the flow path sections and the flow path inlet sections. The third component is attached to at least one of the first and second components via the flow path sections. Aspect 9

[0119] In the flow path formation device according to one of aspects 1 to 9, the flow path formation device is mounted on a vehicle. The fluid is a coolant. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] JP 2023-062945

[0001] CN 115388193 A

[0004]

Claims

[1] Flow path formation device comprising a fluid flowing three or more components (21, 22, 30), wherein the three or more components comprise a first component (21), a second component (22) and a third component (30), The first component and the second component form a flow path in which the fluid flows, the third component is attached to the first component and the second component, the first component comprises a first connecting surface (211) which is joined to the second component, the second component comprises a second connecting surface (221) which is joined to the first connecting surface, the second component is connected to the first component by joining the second connecting surface to the first connecting surface, and the third component is attached to the first component and the second component via a connection interface (23) where the first connection surface and the second connection surface are joined together. [2] Flow path formation device according to claim 1, comprising a mounting adjustment section (N11, N21, 331, 70, 90) configured to adjust the mounting position of the third component in at least one direction intersecting a surface normal direction and a direction intersecting the surface normal direction, wherein the surface normal direction is perpendicular to the connection interface. [3] Flow path formation device according to claim 2, wherein the third component is attached to the first and second components by screws (S) and includes third screw holes (331) into which the screws are inserted, the first component includes a first screw hole (N11) into which one of the screws that is inserted into one of the third screw holes is inserted and fastened, the second component includes a second screw hole (N21) into which another of the screws, which is inserted into another of the third screw holes, is inserted and fastened, the central axes of the first screw hole, the second screw hole, and the third screw holes extend in a direction that intersects the surface normal direction, and The assembly adjustment section comprises the first screw hole, the second screw hole and the third screw holes, wherein the inner diameters of the third screw holes are larger by a predetermined amount than at least one of the inner diameters of the first screw hole and the second screw hole. [4] Flow path formation device according to claim 2, further comprising a snap lock (90) with which the third component is attached to the first component and the second component, wherein the snap fastener (90) comprises a claw part (91) and an engagement part (92), the engagement part comprises a hollow fitting part (921) into which the claw part is fitted, and the assembly adjustment section includes the snap lock, wherein a size of the fitting part is larger by a predetermined amount in at least one of the surface normal directions and a predetermined direction that crosses the surface normal direction than a size of the claw part. [5] Flow path formation device according to claim 3 or 4, wherein the predetermined amount is determined on the basis of a fault in the connection interface where the first connection surface and the second connection surface are joined. [6] Flow path formation device according to claim 2, wherein the third component is attached to the first and second components with screws (S), the assembly adjustment section comprises elastic sections (70) made of an elastic material, which have elastic section holes (71) into which the screws are inserted, the central axes of the elastic section holes extend in a direction that intersects the surface normal direction, and The third component is attached to the first and second components by means of screws inserted into the elastic section holes. [7] Flow path formation device according to claim 6, wherein the assembly adjustment section comprises deformation limiting sections (80) configured to limit the elastic deformation of the elastic sections in a direction that intersects the surface normal direction. [8] Flow path formation device according to claim 2, wherein the three or more components include the following Flow path sections (32) that allow a fluid to flow between the third component and the flow path formed by the first component and the second component, Flow path introduction sections (213) into which the flow path sections are introduced, and Sealing components (40) configured to prevent fluid leakage between the flow path sections and the flow path inlet sections, and where the third component is attached to at least one of the first component and the second component via the flow path sections. [9] Flow path formation device according to claim 1, wherein the flow path formation device is mounted on a vehicle and the fluid is a coolant.

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