Flow channel forming device

Abstract

To provide a flow passage forming device capable of suppressing breakage of a joint surface.SOLUTION: A flow passage forming device in which a fluid flows includes three or more components (21, 22, 30). The three or more components include a first component (21) and a second component (22) for forming the flow passage in which a fluid flows, and a third component (30) mounted on the first component and the second component. The first component includes a first joint surface (211) joined with the second component, the second component includes a second joint surface (221) joined with the first joint surface, and the second joint surface is joined with the first joint surface and joined with the first component. When the surface formed by the first joint surface and the second joint surface being joined with each other is defined as a joint surface (23), the third component is mounted on the first component and the second component striding over the joint surface.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a flow path forming device.

Background Art

[0002] Conventionally, a pump device with a multi-directional valve adapted to a vehicle's thermal management system is known (see, for example, Patent Document 1). In the pump device described in Patent Document 1, the flow path forming device is composed of an integrated plate body in which a plurality of fluid flow paths are formed, a first end plate fixed and connected to one surface of the integrated plate body, and a second end plate fixed and connected to the other surface. A multi-directional valve is attached to the first end plate. A three-way proportional valve is attached to the second end plate. As a result, the flow path forming device can introduce fluid to the multi-directional valve or discharge fluid from the multi-directional valve, and can also introduce fluid to the three-way proportional valve or discharge fluid from the three-way proportional valve.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] When the flow path forming device is composed of a plurality of components and any of the plurality of components is joined, loads such as the load due to the weight of the joined component itself, the load due to the weight of other components attached to the joined component, and the load due to the weight of the flowing fluid are applied to the joint surface of the components. Further, when the flow path forming device is attached to a vehicle, a load caused by the vibration of the vehicle is further applied to the joint surface. These loads applied to the joint surface are factors that cause the joint surface to break.

[0005] This disclosure aims to provide a flow channel forming apparatus capable of suppressing damage to the joint surface. [Means for solving the problem]

[0006] The invention described in claim 1 is, A fluid channel forming device is It comprises three or more components (21, 22, 30), The three or more components include a first component (21) and a second component (22) that form a fluid passage, and a third component (30) that is attached to the first and second components. The first component has a first joining surface (211) that joins with the second component, The second part has a second joining surface (221) that joins with the first joining surface, and the second joining surface is joined to the first joining surface and thus joined to the first part. The third component is attached to the first and second components, straddling the joint surface (23), where the joint surface (23) is defined as the surface formed by joining the first and second joint surfaces. 、 The mounting adjustment unit (90) further includes an adjustment unit (90) for adjusting the position of at least one of the mounting positions of the third component in the direction perpendicular to the surface and the mounting position in the direction intersecting the direction perpendicular to the surface, when the direction perpendicular to the joint surface is defined as the surface-orthogonal direction. The third component can be attached to the first and second components by a snap-fit ​​(90) having a claw portion (91) and a receiving portion (92) having a hollow fitting portion (921) into which the claw portion fits. The mounting adjustment part has at least one of the following shapes: a shape in which the size of the fitting part in the direction perpendicular to the surface is larger by a predetermined amount than the size of the claw part in the direction perpendicular to the surface, and a shape in which the size of the fitting part in a predetermined direction intersecting the direction perpendicular to the surface is larger by a predetermined amount than the size of the claw part in a predetermined direction. ru. Furthermore, the invention described in claim 3 is, A device for forming a fluid channel, It comprises three or more components (21, 22, 30), The three or more components include a first component (21) and a second component (22) that form a fluid passage, and a third component (30) that is attached to the first and second components. The first component has a first joining surface (211) that joins with the second component, The second part has a second joining surface (221) that joins with the first joining surface, and the second joining surface is joined to the first joining surface and thus joined to the first part. The third component is attached to the first and second components, straddling the joint surface, when the joint surface (23) is defined as the surface formed by joining the first and second joint surfaces. The mounting adjustment unit (70) further includes an adjustment unit for adjusting at least one of the mounting positions of the third component in the direction perpendicular to the surface and the mounting position in the direction intersecting the direction perpendicular to the surface, when the direction perpendicular to the joint surface is defined as the surface-orthogonal direction. The third part is attached to the first and second parts by screws (S). The mounting adjustment section is made of an elastic material and has an elastic part (70) having an elastic part hole (71) into which a screw is inserted. The elastic part hole has an axis in a direction that intersects the direction perpendicular to the plane. The third component is attached to the first and second components by a screw inserted into an elastic hole. Furthermore, the invention described in claim 5 is, A device for forming a fluid channel, It comprises three or more components (21, 22, 30), The three or more components include a first component (21) and a second component (22) that form a fluid passage, and a third component (30) that is attached to the first and second components. The first component has a first joining surface (211) that joins with the second component, The second part has a second joining surface (221) that joins with the first joining surface, and the second joining surface is joined to the first joining surface and thus joined to the first part. The third component is attached to the first and second components, straddling the joint surface, when the joint surface (23) is defined as the surface formed by joining the first and second joint surfaces. The system further includes mounting adjustment parts (N11, N21, 331, 70, 90) that adjust the position of at least one of the mounting positions of the third component in the direction perpendicular to the surface and the mounting position in the direction intersecting the direction perpendicular to the surface, when the direction perpendicular to the joint surface is defined as the surface-orthogonal direction. The three or more components include a flow path section (32) that allows fluid to flow between the flow path formed by the first and second components and the third component, a flow path insertion section (213) into which the flow path section is inserted, and a sealing member (40) that suppresses fluid leakage between the flow path section and the flow path insertion section. The third component is attached to at least one of the first and second components by the flow channel.

[0007] According to this, the strength of the joint surface, which is the part where the first component and the second component are joined, can be improved by the third component attached across the joint surface, and the rigidity of the entire flow path forming device can be improved. Therefore, even if a load is generated to separate the first component and the second component from the joint surface, the occurrence of damage to the joint surface can be suppressed.

[0008] The reference numerals in parentheses attached to each component etc. show an example of the correspondence relationship between the component etc. and the specific components etc. described in the embodiments described later.

Brief Description of the Drawings

[0009] [Figure 1] It is a top view of the flow path forming device according to the first embodiment. [Figure 2] It is a side view of the flow path forming device according to the first embodiment. [Figure 3] It is a top view of the state before the valve of the flow path forming device according to the first embodiment is attached. [Figure 4] It is a side view of the state before the valve of the flow path forming device according to the first embodiment is attached. [Figure 5] It is a schematic diagram showing a method of attaching the valve and the casing according to the first embodiment. [Figure 6] It is an enlarged view of part VI of FIG. 5. [Figure 7] It is a diagram for explaining the valve hole distance VL and the case hole distance CL. [Figure 8] It is an enlarged view of part VIII of FIG. 7. [Figure 9] It is a diagram showing a comparative example in which the valve is not attached to the casing across the joint surface. [Figure 10] This is a schematic diagram showing the method of mounting the valve and casing according to the second embodiment. [Figure 11] This is a side view of a channel forming apparatus according to the third embodiment. [Figure 12] This is a diagram illustrating the size of the claw portion and the mating portion. [Modes for carrying out the invention]

[0010] Embodiments of this disclosure will be described below with reference to the drawings. In the following embodiments, parts that are the same as or equivalent to those described in the prior embodiments will be denoted by the same reference numerals, and their descriptions may be omitted. Also, if only a part of a component is described in an embodiment, the components described in the prior embodiments can be applied to the other parts of that component. The following embodiments can be partially combined with each other, even if not explicitly stated, as long as it does not impede the combination.

[0011] (First Embodiment) This embodiment will be described with reference to Figures 1 to 9. The flow path forming device 10 of this disclosure is configured to be applicable to a fluid control system mounted on, for example, an electric vehicle. The fluid control system appropriately distributes heat generated in the refrigeration cycle and heat generated in various heat-generating devices to various devices that require heat via a fluid that acts as a heat transport medium. The flow path forming device 10 is used to guide the fluid to the various devices that require heat. The fluid flowing through the flow path forming device 10 is cooling water. The cooling water may be, for example, antifreeze, but it may also be a liquid containing water other than antifreeze.

[0012] As shown in Figures 1 and 2, the flow path forming device 10 comprises a casing 20 and a valve 30. The casing 20 is a hollow manifold that forms a flow path through which fluid flows. The casing 20 is formed, for example, by resin molding. A flow path (not shown) is formed inside the casing 20, allowing for the introduction of fluid from the flow path inside the casing 20 to the valve 30 or the discharge of fluid from the valve 30 to the flow path inside the casing 20.

[0013] The casing 20 has a first case portion 21 and a second case portion 22, and the first case portion 21 and the second case portion 22 are assembled in a predetermined assembly direction. The valve 30 is assembled in a predetermined position in a direction different from the direction in which the first case portion 21 and the second case portion 22 are assembled to the casing 20. The flow path forming device 10 of this embodiment is composed of a first case portion 21, a second case portion 22, and a valve 30. In Figure 2, in order to make the positional relationship between the first case portion 21, the second case portion 22, and the valve 30 easier to understand, the parts of the first case portion 21 and the second case portion 22 that are located on the back side of the valve 30 are shown with dashed lines. In this embodiment, the first case portion 21 corresponds to the first component, the second case portion 22 corresponds to the second component, and the valve 30 corresponds to the third component.

[0014] The first case portion 21 has a hollow bottom shape, with an opening on the side opposite the bottom. As shown in Figures 1 to 4, the first case portion 21 has a first joining surface 211 that joins with the second case portion 22, a first case mounting portion 212 where the valve 30 is attached, and three flow path insertion portions 213 into which the flow path portion 32 of the valve 30, which will be described later, is inserted.

[0015] Furthermore, the second case portion 22 has a hollow bottom shape, with an opening on the side opposite to the bottom. The second case portion 22 has a second joining surface 221 that joins with the first case portion 21, and a second case mounting portion 222 which is the part to which the valve 30 is attached.

[0016] The first joining surface 211 is formed in a planar shape and is located on the opening side opposite to the bottom side. The second joining surface 221 is also formed in a planar shape and is located on the opening side opposite to the bottom side. The casing 20 is assembled by joining the first joining surface 211 and the second joining surface 221, which are the opening sides of the first case portion 21 and the second case portion 22, respectively.

[0017] Here, the surface indicating the boundary between the first case portion 21 and the second case portion 22 in the state where the first joining surface 211 and the second joining surface 221 are joined is defined as the joining surface 23. The casing 20 has a joining surface 23 formed by joining the first joining surface 211 and the second joining surface 221. The casing 20 then seals the flow path formed inside by joining the first joining surface 211 and the second joining surface 221 and assembling them. In other words, the first case portion 21 and the second case portion 22 form a flow path through which fluid flows. The method of joining the first joining surface 211 and the second joining surface 221 can be, for example, welding, bonding, or other methods.

[0018] As shown in Figure 1 and other figures below, the direction in which the first case portion 21 and the second case portion 22 are assembled is referred to as the first direction D1, and the direction perpendicular to the first direction D1 is referred to as the second direction D2. The first direction D1 is the direction that intersects the joining surface 23, specifically the direction perpendicular to the joining surface 23. The first direction D1 corresponds to the direction perpendicular to the surface. Furthermore, as shown in Figure 2 and other figures, the direction perpendicular to both the first direction D1 and the second direction D2 is referred to as the third direction D3.

[0019] In this embodiment, for example, an example in which the flow path forming device 10 is mounted on a vehicle such that the third direction D3 is vertical, i.e., in the up-and-down direction, will be described. Note that the orientation of the flow path forming device 10 is just one example. The orientation of the flow path forming device 10 when mounted on a vehicle is not limited to those shown in Figures 1 and 2, etc.

[0020] The first case mounting portion 212 is provided protruding from the first case portion 21 to one side in the first direction D1. As shown in Figure 5, the first case mounting portion 212 has a first case hole 2121 into which a screw S, which is a mounting member for attaching the valve 30 to the first case portion 21, is inserted. A first nut N1, which is fastened with the screw S, is inserted into the first case hole 2121. The first nut N1 has a first screw hole N11 formed on its inner circumference, into which a screw groove is formed for fastening the screw S.

[0021] The three flow path insertion sections 213 consist of one fluid inlet for introducing fluid into a flow path formed inside the casing 20, and the other two fluid outlets for discharging fluid from the flow path formed inside the casing 20 to the outside of the casing 20. The insertion openings of the three flow path insertion sections 213 are formed in a circular shape so that the flow path section 32 of the valve 30 can be inserted into them. The flow path section 32 is inserted into the three flow path insertion sections 213 and the valve 30 is connected.

[0022] The second case mounting portion 222 is provided projecting from the second case portion 22 to the other side in the first direction D1. The second case mounting portion 222 is provided in a position that is symmetrical with respect to the first case mounting portion 212 of the first case portion 21, with the joining surface 23 as the plane of symmetry. As shown in Figure 5, the second case mounting portion 222 has a second case hole 2221 into which a screw S for attaching the valve 30 to the second case portion 22 is inserted. A second nut N2, which is fastened with the screw S, is inserted into the second case hole 2221. The second nut N2 has a second screw hole N21 formed on its inner circumference, into which a screw groove is formed for fastening the screw S.

[0023] The first case hole 2121, the first screw hole N11, the second case hole 2221, and the second screw hole N21 each have an axis in the second direction D2, which intersects the first direction D1. The valve 30 is fastened to the first case portion 21 and the second case portion 22 by screwing the screw S into the first nut N1 and the second nut N2, respectively.

[0024] The valve 30 forms a flow path together with the casing 20 and switches the flow path of the fluid flowing through the fluid control system. The valve 30 may be composed of, for example, a multi-way valve having a plurality of fluid inlets and a plurality of fluid outlets, not shown. The valve 30 has a valve body 31, three cylindrical flow path portions 32 protruding from the valve body 31, and two valve mounting portions 33 for attaching the valve 30 to the casing 20.

[0025] The valve body 31 is the outer shell of the valve 30 and is formed in a hollow shape. The valve body 31 has a flow path inside and houses a valve element (not shown) that switches the flow path inside the valve body 31.

[0026] The three flow channels 32 consist of one that allows fluid to flow into the valve body 31, and the other two that discharge the fluid that has flowed into the valve body 31 to the outside of the valve body 31. In the valve 30, each of the three flow channels 32 is inserted into the flow channel insertion section 213 of the first case section 21, and the flow channels within the valve body 31 communicate with the flow channels within the casing 20, thereby forming a flow channel together with the casing 20.

[0027] The valve mounting portion 33 is the part to which a screw S for attaching the valve 30 to the casing 20 is attached, and is formed in a rib shape that protrudes from the valve body 31 to one side and the other side in the first direction D1. As shown in Figure 5, the valve mounting portion 33 has a valve hole 331 into which the screw S is inserted. Hereinafter, the valve hole 331 formed in the valve mounting portion 33 formed on one side in the first direction D1 will be referred to as the first valve hole 3311, and the valve hole 3312 formed in the valve mounting portion 33 formed on the other side in the first direction D1 will be referred to as the second valve hole 3312. The first valve hole 3311 and the second valve hole 3312 each have an axis in the second direction D2, which is a direction intersecting the first direction D1. The first valve hole 3311 and the second valve hole 3312 correspond to the third screw hole.

[0028] The first valve hole 3311 is formed in a position that overlaps with the first case hole 2121 of the first case portion 21 in the second direction D2. The second valve hole 3312 is formed in a position that overlaps with the second case hole 2221 of the second case portion 22 in the second direction D2. Specifically, the first valve hole 3311 is formed so that its axis overlaps with the axis of the first screw hole N11 of the first nut N1 which is inserted into the first case hole 2121. The second valve hole 3312 is formed so that its axis overlaps with the axis of the second screw hole N21 of the second nut N2 which is inserted into the second case hole 2221.

[0029] A screw S, which is inserted into the first case hole 2121, is inserted into the first valve hole 3311. Similarly, a screw S, which is inserted into the second case hole 2221, is inserted into the second valve hole 3312. As a result, the valve 30 is attached to the first case portion 21 and the second case portion 22 on one side of the casing 20 in the second direction D2.

[0030] Specifically, as shown in Figures 1 and 2, the valve 30 is fixed to the casing 20 by screws S that straddle the first case portion 21 and the second case portion 22 on one side in the second direction D2 of the casing 20. In other words, the valve 30 is fixed to the casing 20 by straddling the joint surface 23 formed by joining the first joint surface 211 of the first case portion 21 and the second joint surface 221 of the second case portion 22.

[0031] Furthermore, in the flow path forming apparatus 10 of this embodiment, the flow path section 32 is inserted into the flow path insertion section 213, and the valve 30 is attached to the casing 20. As shown in Figure 4, an O-ring 40, which is a sealing member that suppresses fluid leakage, is provided between the outer circumference of the flow path section 32 and the inner circumference of the flow path insertion section 213. The O-ring 40 is positioned in a compressed and elastically deformed state between the outer circumference of the flow path section 32 and the inner circumference of the flow path insertion section 213.

[0032] By the way, in the flow path forming device 10 of this embodiment, as shown in Figure 6, the first valve diameter VL1, which is the inner diameter of the first valve hole 3311, is formed to be a predetermined size larger than the first nut diameter NL1, which is the inner diameter of the first screw hole N11 of the first nut N1. Also, although not shown, the inner diameter of the second valve hole 3312 is formed to be a predetermined size larger than the inner diameter of the second screw hole N21 of the second nut N2. The reason why the first valve diameter VL1 is formed to be larger than the first nut diameter NL1, and the inner diameter of the second valve hole 3312 is formed to be larger than the inner diameter of the second screw hole N21, will be explained with reference to Figures 7 and 8.

[0033] When joining the first joining surface 211 and the second joining surface 221 to form the casing 20, the distance between the center of the first screw hole N11 in the first case portion 21 and the center of the second screw hole N21 in the second case portion 22 may deviate from the preset design value. Also, the positions of the first screw hole N11 and the second screw hole N21 may deviate from the preset design positions. Hereinafter, the distance between the center of the first screw hole N11 and the center of the second screw hole N21 will be referred to as the case hole distance CL.

[0034] Factors that cause the case hole distance CL to deviate from the design value include, for example, design errors such as the surface roughness and flatness of the first joining surface 211 and the second joining surface 221, and assembly errors that occur during manufacturing. Factors that cause the first screw hole N11 and the second screw hole N21 to deviate from the design value include, for example, design errors of the first case mounting portion 212 and the second case mounting portion 222, and machining errors that occur when drilling the first screw hole N11 and the second screw hole N21. In addition, for example, when the first joining surface 211 and the second joining surface 221 are joined by welding, variations in the amount of molten metal when melting and welding the first joining surface 211 and the second joining surface 221 may cause the case hole distance CL, the first screw hole N11, and the second screw hole N21 to deviate from the design value. Thus, the deviations in the case hole distance CL and the positional deviations of the first screw hole N11 and the second screw hole N21 are due to errors in the joint surface 23 formed by the first joint surface 211 and the second joint surface 221.

[0035] However, the valve 30 is positioned such that the axis of the first valve hole 3311 coincides with the axis of the first screw hole N11, and the axis of the second valve hole 3312 coincides with the axis of the second screw hole N21. In addition, the valve hole distance VL, which is the distance between the center of the first valve hole 3311 and the center of the second valve hole 3312, is set to be equal to the design value of the case hole distance CL.

[0036] However, the valve hole distance VL may deviate from the design value set to be equal to the case hole distance CL due to design errors in the valve 30, etc. Also, due to design errors in the valve 30, etc., the axis of the first valve hole 3311 may no longer coincide with the axis of the first screw hole N11, or the axis of the second valve hole 3312 may no longer coincide with the axis of the second screw hole N21.

[0037] Therefore, if the case hole distance CL deviates from the pre-set design value, or if the valve hole distance VL deviates from the pre-set design value, the case hole distance CL may not match the actual valve hole distance VL. Also, if the positions of the first screw hole N11 and the first valve hole 3311 deviate from the pre-set design positions, the axis of the first valve hole 3311 may not coincide with the axis of the first screw hole N11. Furthermore, if the positions of the second screw hole N21 and the second valve hole 3312 deviate from the pre-set design positions, the axis of the second valve hole 3312 may not coincide with the axis of the second screw hole N21.

[0038] For example, suppose that when the first joining surface 211 and the second joining surface 221 are joined to form the casing 20, the actual case hole distance CL becomes smaller than the preset design value due to an error in the joining surface 23. On the other hand, suppose that the actual valve hole distance VL of the valve 30 becomes larger than the preset design value due to a design error. In such a case, as shown in Figure 8, the valve hole distance VL becomes larger than the case hole distance CL.

[0039] Here, let's assume that the inner diameter of the first valve hole 3311 is formed to be approximately the same size as the inner diameter of the first screw hole N11, and the inner diameter of the second valve hole 3312 is formed to be approximately the same size as the inner diameter of the second screw hole N21.

[0040] In this case, suppose that screws S are inserted into the first valve hole 3311 and the first screw hole N11 and the valve 30 is fixed to the first case portion 21 by screw tightening. Then, as shown in Figure 8, the second valve hole 3312 is positioned shifted to the other side in the first direction D1 compared to the position of the second screw hole N21. If screws S are inserted into the second valve hole 3312 and the second screw hole N21 and the valve 30 is fixed to the second case portion 22 by screw tightening in this state, there is a risk that a load will be generated on the joint surface 23 that will pull the first case portion 21 and the second case portion 22 apart, as shown by the arrow in Figure 7.

[0041] Furthermore, suppose the valve 30 is fixed to the first case portion 21 and the second case portion 22 by screw fastening in a state where the axes of the first valve hole 3311 and the first screw hole N11, or the axes of the second valve hole 3312 and the second screw hole N21, do not overlap. In this case, a load is generated on the joint surface 23, and this load generated on the joint surface 23 may occur not only in the first direction D1, but in any direction intersecting the first direction D1, for example, in the third direction D3.

[0042] Such loads can cause the first joint surface 211 and the second joint surface 221 to separate, leading to damage to the joint surface 23.

[0043] In contrast, in the flow path forming device 10 of this embodiment, the first valve diameter VL1 of the first valve hole 3311 is formed to be larger than the first nut diameter NL1 of the first screw hole N11, and the inner diameter of the second valve hole 3312 is formed to be larger than the inner diameter of the second screw hole N21. Specifically, the first valve diameter VL1 is formed to be larger than the first nut diameter NL1 of the first screw hole N11 by the amount of the expected error in the joint surface 23. Also, the inner diameter of the second valve hole 3312 is formed to be larger than the inner diameter of the second screw hole N21 by the amount of the expected error in the joint surface 23.

[0044] Therefore, for example, even if the second valve hole 3312 is positioned offset in the first direction D1 and the third direction D3 relative to the position of the second screw hole N21, the screw S can be inserted at a position offset from the axis of the second valve hole 3312. This allows the inner diameter of the second valve hole 3312, based on the error of the joint surface 23, to absorb the discrepancy between the valve hole distance VL and the case hole distance CL. Consequently, when fastening the valve 30 to the second case portion 22 with the screw S, it is possible to avoid generating a load on the joint surface 23 that separates the first case portion 21 and the second case portion 22.

[0045] In the above description, the case in which the valve 30 is fixed to the first case portion 21 by inserting a screw S into the first valve hole 3311 and the first screw hole N11, and then the valve 30 is fixed to the second case portion 22 by inserting a screw S into the second valve hole 3312 and the second screw hole N21, is explained. However, the same applies even when the valve 30 is fixed to the second case portion 22 by inserting a screw S into the second valve hole 3312 and the second screw hole N21, and then the valve 30 is fixed to the first case portion 21 by inserting a screw S into the first valve hole 3311 and the first screw hole N11. That is, even if the first valve hole 3311 is positioned offset in the first direction D1 and the third direction D3 relative to the position of the first screw hole N11, the inner diameter of the first valve hole 3311 can absorb the difference between the valve hole distance VL and the case hole distance CL. Thus, the first valve hole 3311 and the second valve hole 3312 function as mounting adjustment parts that adjust the mounting position of the valve 30 attached to the first case portion 21 and the second case portion 22 in the first direction D1, and adjust the mounting position in the third direction D3 which intersects the first direction D1.

[0046] As shown in Figures 5 and 6, the outer diameter SL of the head of the screw S is sufficiently larger than the inner diameter of the first valve hole 3311 and the inner diameter of the second valve hole 3312. As a result, the head of the screw S cannot be inserted into the first valve hole 3311 and the second valve hole 3312.

[0047] Furthermore, in the flow path forming device 10 of this embodiment, the flow path section 32 is inserted into the flow path insertion section 213 and the valve 30 is attached to the casing 20. For example, if the valve 30 is shifted to one side or the other side of the first direction D1 relative to the design value and fixed to the casing 20 by screws S, the flow path section 32 is shifted to one side or the other side of the first direction D1 in accordance with the shift of the valve 30 and inserted into the flow path insertion section 213.

[0048] As a result, the O-ring 40 provided between the flow channel 32 and the flow channel insertion section 213 undergoes elastic deformation biased to one side or the other in the first direction D1. If the O-ring 40 remains in this biased elastic deformation state, it may deteriorate. Deterioration of the O-ring 40 can lead to a deterioration of the sealing performance between the flow channel 32 and the flow channel insertion section 213, and can cause fluid to leak from between the flow channel 32 and the flow channel insertion section 213.

[0049] In contrast, in the flow path forming device 10 of this embodiment, the mounting position of the valve 30 attached to the first case portion 21 and the second case portion 22 in the first direction D1 can be adjusted by the first valve hole 3311 and the second valve hole 3312.

[0050] Therefore, the mounting position of the valve 30 is less likely to deviate from the design position. As a result, the O-ring 40 is less likely to undergo elastic deformation biased to one side or the other in the first direction D1. Therefore, fluid leakage from between the flow path section 32 and the flow path insertion section 213 due to deterioration of the O-ring 40 can be suppressed.

[0051] Furthermore, for example, when attaching the valve 30 to the casing 20, the flow path portion 32 can be inserted into the flow path insertion portion 213, and then the valve 30 can be fixed to the casing 20 with a screw S. In this case, even if the valve hole distance VL and the case hole distance CL are misaligned, the valve 30 can be attached to the casing 20 such that the mounting position of the valve 30 approaches the design position, depending on the inner diameter of the first valve hole 3311 and the inner diameter of the second valve hole 3312. In addition, the O-ring 40 when attached is less likely to be biased in the first direction D1 and in the direction intersecting the first direction D1.

[0052] As described above, the flow path forming device 10 of this embodiment comprises a first case portion 21 and a second case portion 22 that form a flow path through which fluid flows, and a valve 30 attached to the first case portion 21 and the second case portion 22. The first case portion 21 has a first joining surface 211 that joins with the second case portion 22. The second case portion 22 has a second joining surface 221 that joins with the first case portion 21, and the second joining surface 221 is joined to the first joining surface 211 and then joined to the first case portion 21. The valve 30 is attached to the first case portion 21 and the second case portion 22, straddling the joining surface 23 formed by the joining of the first joining surface 211 and the second joining surface 221.

[0053] According to this, the valve 30, which is mounted across the joint surface 23, can improve the strength of the joint surface 23, where the first case portion 21 and the second case portion 22 are joined, thereby improving the overall rigidity of the flow path forming device 10. Therefore, even if a load is applied that separates the first case portion 21 and the second case portion 22 from the joint surface 23, damage to the joint surface 23 can be suppressed.

[0054] Here, if, as shown in Figure 9, the valve 30 is not mounted across the joint surface 23 when attached to the casing 20, then the strength of the joint surface 23 cannot be improved by mounting the valve 30. For example, as shown in Figure 9, suppose the valve 30 is joined and fixed only to the first case portion 21. In this case, the joint surface 23 is subjected to loads due to the weight of the valve 30 itself and the weight of the fluid flowing between the casing 20 and the valve 30. Furthermore, if other parts, such as the reservoir tank 50 shown in Figure 9, are further attached to the second case portion 22, the loads due to the weight of these other parts are also subjected to loads on the joint surface 23.

[0055] Furthermore, the flow path forming device 10 of this embodiment is attached to an electric vehicle such that the third direction D3, which is perpendicular to the first direction D1, is vertical. In this case, vibrations when the electric vehicle is running cause a load to be applied to the joint surface 23 in the third direction D3, i.e., the vertical direction. However, in a configuration where there are no parts attached to the casing 20 that straddle the joint surface 23, it is difficult to improve the strength of the joint surface 23.

[0056] In contrast, the flow path forming device 10 of this embodiment can also improve the strength against a load in the third direction D3 on the joint surface 23 by using a valve 30 that is attached to the casing 20 across the joint surface 23.

[0057] In this embodiment, an example has been described in which the component attached to the casing 20 across the joint surface 23 is a valve 30, but the embodiment is not limited to this. The component attached to the casing 20 across the joint surface 23 can be any of the components of the fluid control system to which the flow path forming device 10 is applied, such as an electric pump, a heat exchanger, or a reservoir tank 50, that can be attached to the casing 20.

[0058] Furthermore, according to the above embodiment, the following effects can be obtained.

[0059] (1) In the above embodiment, the valve 30 has a first valve hole 3311 and a second valve hole 3312 for adjusting the mounting position of the valve 30 in a first direction D1 and a third direction D3 intersecting the first direction D1.

[0060] As described above, when joining the first joining surface 211 and the second joining surface 221 to form the casing 20, the case hole distance CL may deviate from the pre-set design value due to errors in the joining surface 23, such as design errors or assembly errors. In addition, the positions of the first screw hole N11 and the second screw hole N21 may deviate from the pre-set design positions. In this case, if the valve 30 is attached to the first case portion 21 and the second case portion 22 based on the design value of the case hole distance CL, there is a risk that a load will be generated on the joining surface 23 that will separate the first case portion 21 and the second case portion 22.

[0061] In contrast, the flow path forming device 10 is configured to allow adjustment of the mounting position of the valve 30 in the first direction D1 and the third direction D3 using the first valve hole 3311 and the second valve hole 3312. Therefore, even if the case hole distance CL, the position of the first screw hole N11, and the position of the second screw hole N21 deviate from the design values, the load on the joint surface 23 caused by such deviations can be suppressed. This, in turn, can suppress damage to the joint surface 23.

[0062] (2) In the above embodiment, the valve 30 is attached to the first case portion 21 and the second case portion 22 by a screw S and has a valve hole 331 into which the screw S is inserted. The first case portion 21 has a first nut N1 into which a first screw hole N11 is formed, into which the screw S inserted into the valve hole 331 is inserted and fastened. The second case portion 22 has a second nut N2 into which a second screw hole N21 is formed, into which the screw S inserted into the valve hole 331 is inserted and fastened. The valve hole 331, the first screw hole N11 and the second screw hole N21 have axes in a direction along the first direction D1. The inner diameter of the first valve hole 3311 is formed to be a predetermined size larger than the inner diameter of the first screw hole N11. The inner diameter of the second valve hole 3312 is formed to be a predetermined size larger than the inner diameter of the second screw hole N21. The first valve hole 3311 and the second valve hole 3312 adjust the mounting position of the valve 30 in the first direction D1 and the third direction D3.

[0063] According to this, even if the case hole distance CL, the position of the first screw hole N11, and the position of the second screw hole N21 deviate from the design values, the amount of deviation from the design values ​​can be absorbed by the size of the first valve hole 3311 and the second valve hole 3312. Therefore, even if the case hole distance CL, the position of the first screw hole N11, and the position of the second screw hole N21 deviate from the design values ​​in the first direction D1 and the third direction D3, the load on the joint surface 23 caused by such deviation can be suppressed. This, in turn, can suppress damage to the joint surface 23.

[0064] (3) In the above embodiment, the predetermined size is determined based on the error of the joint surface 23 formed by joining the first joint surface 211 and the second joint surface 221.

[0065] According to this, the sizes of the first valve hole 3311 and the second valve hole 3312 are determined by errors in the joint surface 23, such as design errors and assembly errors of the first joint surface 211 and the second joint surface 221. Therefore, the deviation of the case hole distance CL corresponding to the error in the joint surface 23 can be absorbed by the sizes of the first valve hole 3311 and the second valve hole 3312.

[0066] (4) In the above embodiment, the valve 30 has a flow path portion 32 that allows fluid to flow between the flow path formed by the first case portion 21 and the second case portion 22 and the valve 30. Furthermore, it has a flow path insertion portion 213 that is inserted into the flow path portion 32 and an O-ring 40 that suppresses fluid leakage between the flow path portion 32 and the flow path insertion portion 213. The valve 30 is attached to the first case portion 21 by inserting the flow path portion 32 into the flow path insertion portion 213.

[0067] According to this, the valve 30 can be attached to the casing 20 by the flow path section 32 that forms the flow path. Furthermore, the flow path forming device 10 of this embodiment is configured to allow adjustment of the mounting position of the valve 30 in the first direction D1. Therefore, even if the case hole distance CL deviates from the design value, the mounting position of the valve 30 is less likely to deviate from the design position, and the O-ring 40 provided between the flow path section 32 and the flow path insertion section 213 is less likely to undergo biased elastic deformation in the first direction D1 and in the direction intersecting the first direction D1. Consequently, deterioration of the O-ring 40 due to the O-ring 40 remaining in a state of biased elastic deformation can be suppressed, and leakage of fluid from between the flow path section 32 and the flow path insertion section 213 due to deterioration of the O-ring 40 can be suppressed.

[0068] (5) In the above embodiment, the flow path forming device 10 is applied to an electric vehicle. The fluid is cooling water.

[0069] When the fluid is cooling water, the weight of the cooling water flowing through the casing 20 and valve 30 imposes a load on the joint surface 23. Therefore, the load on the joint surface 23 tends to be greater compared to when the fluid is a gas. Accordingly, in the flow path forming device 10 through which cooling water flows, it is more preferable to have a configuration in which the valve 30 is attached to the first case section 21 and the second case section 22, straddling the joint surface 23.

[0070] (Modified version of the first embodiment) In the first embodiment described above, an example was described in which the inner diameter of the first valve hole 3311 is formed to be a predetermined size larger than the inner diameter of the first screw hole N11, and the inner diameter of the second valve hole 3312 is formed to be a predetermined size larger than the inner diameter of the second screw hole N21. However, the invention is not limited to this example.

[0071] For example, if a screw S can be inserted, the inner diameter of the first valve hole 3311 may be formed to be approximately the same size as the inner diameter of the first screw hole N11. Also, if a screw S can be inserted, the inner diameter of the second valve hole 3312 may be formed to be approximately the same size as the inner diameter of the second screw hole N21. Furthermore, the inner diameter of the first valve hole 3311 may be formed to be a predetermined size larger than the inner diameter of the first screw hole N11, and the inner diameter of the second valve hole 3312 may be formed to be approximately the same size as the inner diameter of the second screw hole N21.

[0072] (Second Embodiment) Next, the second embodiment will be described with reference to Figure 10. In this embodiment, a part of the structure for attaching the valve 30 to the first case portion 21 and the second case portion 22 differs from that of the first embodiment. Other than this, it is the same as the first embodiment. For this reason, in this embodiment, the parts that differ from the first embodiment will be mainly described, and the parts that are the same as the first embodiment may be omitted from the description.

[0073] As shown in Figure 10, the flow path forming device 10 of this embodiment has a bush 70 and a collar 80 provided around the screw S. The bush 70 is an elastic part made of an elastic material such as resin, and is configured to be elastically deformable by an external force. The bush 70 is hollow cylindrical in shape and has an elastic part hole 71 into which the screw S is inserted. The elastic part hole 71 has an axis in a second direction D2 which intersects the first direction D1. The bush 70 also has a recess 72 near the center of the outer circumference in the second direction D2 for fitting the bush 70 into the first valve hole 3311 of the valve mounting part 33. The recess 72 is formed by the outer circumference of the bush 70 being recessed inward.

[0074] The bush 70 has a recess 72 that fits into the first valve hole 3311. As a result, the elastically deformable bush 70 is positioned between the inner circumference of the first valve hole 3311 and the outer circumference of the screw S. The bush 70 is also positioned between one side of the bush 70 in the second direction D2 and the screw S. And the bush 70 is positioned between the other side of the bush 70 in the second direction D2 and the first case mounting portion 212.

[0075] Furthermore, the valve 30 in this embodiment is attached to the first case portion 21 and the second case portion 22 by a screw S inserted into the elastic portion hole 71.

[0076] The collar 80 is made of a material such as metal that has greater rigidity than the bush 70. The collar 80 has a cylindrical tube portion 81 and an annular portion 82 that is formed in an annular shape and protrudes from one end of the tube portion 81 in the second direction D2 in a direction that radiates outward from the axis of the tube portion 81.

[0077] The cylindrical portion 81 has an inner diameter that is slightly larger than the outer diameter of the screw S, and is configured to allow the screw S to be inserted inside. The cylindrical portion 81 also has an outer diameter that is approximately the same as the inner diameter of the bush 70, and is configured to be inserted inside the bush 70. The size of the cylindrical portion 81 in the second direction D2 is smaller than the size of the bush 70 in the second direction D2 when it is not elastically deformed.

[0078] The annular portion 82 is an annular plate shape with an opening in the center, and its plate surface is formed to be perpendicular to the second direction D2. Furthermore, the opening of the annular portion 82 is connected to the internal space of the cylindrical portion 81.

[0079] The collar 80 has a cylindrical portion 81 inserted inside the bush 70, and an annular portion 82 positioned between the bush 70 and the screw S in the second direction D2.

[0080] As described above, the flow path forming device 10 of this embodiment is made of an elastic member and has a bush 70 having an elastic hole 71 into which a screw S is inserted. The elastic hole 71 has an axis in a second direction D2 that is perpendicular to the first direction D1. The valve 30 is attached to the first case portion 21 and the second case portion 22 by a screw S inserted into the elastic hole 71.

[0081] According to this, even if the case hole distance CL, the position of the first screw hole N11, and the position of the second screw hole N21 deviate from the design values ​​in the first direction D1 and the third direction D3, the bush 70 will elastically deform in the first direction D1 and the third direction D3 according to these deviations. As a result, the bush 70 can absorb the deviations in the first direction D1 and the third direction D3 from the design values ​​of the case hole distance CL, the first screw hole N11, and the second screw hole N21.

[0082] Incidentally, due to design errors, assembly errors, etc., the positions at which the first joining surface 211 and the second joining surface 221 are joined to each other may be shifted in the second direction D2. For example, the joining position of the first joining surface 211 to the second joining surface 221 may be shifted to one side of the second direction D2 relative to the design position. Such positional shifts of the first joining surface 211 and the second joining surface 221 in the second direction D2 are due to errors in the joining surface 23 formed by the first joining surface 211 and the second joining surface 221.

[0083] In contrast, even if the first joint surface 211 and the second joint surface 221 are misaligned in the second direction D2, the bush 70 will elastically deform in the second direction D2 in accordance with this misalignment. This allows the bush 70 to absorb the misalignment of the first joint surface 211 and the second joint surface 221 from their design values ​​in the second direction D2.

[0084] Therefore, even if the case hole distance CL, the position of the first screw hole N11, and the position of the second screw hole N21 deviate from the design values, or if the first joint surface 211 and the second joint surface 221 are misaligned, the load on the joint surface 23 caused by such misalignment can be suppressed. This, in turn, can suppress damage to the joint surface 23.

[0085] Furthermore, in this embodiment, cooling water flows within the casing 20. Even if the casing 20 expands due to the heat of the cooling water flowing through the passages within the casing 20, the expansion can be absorbed by the elastic deformation of the bush 70. Therefore, even if a load is generated on the joint surface 23 due to the expansion of the casing 20, the load on the joint surface 23 due to the expansion of the casing 20 can be suppressed. This, in turn, can suppress damage to the joint surface 23.

[0086] Furthermore, according to the above embodiment, the following effects can be obtained.

[0087] (1) In the above embodiment, the collar 80 is made of a member with greater rigidity than the bush 70 and has a cylindrical portion 81 and an annular portion 82. The cylindrical portion 81 of the collar 80 is inserted into the inside of the bush 70, and the annular portion 82 is positioned between the bush 70 and the screw S in the second direction D2.

[0088] The reason for having such a collar 80 will now be explained. When the valve 30 is fixed to the first case mounting portion 212 by the screw S, the bush 70 is elastically deformed by the force tightening the screw S and compressed in the direction of the screw S's progression, which in this embodiment is the second direction D2. For this reason, if the collar 80 is not provided, it is difficult to position the valve 30 in the second direction D2.

[0089] In contrast, by providing a collar 80 as in this embodiment, even when the bush 70 is compressed in the second direction D2 by the tightening force of the screw S, the cylindrical portion 81 stops the progression of the screw S due to tightening. Therefore, the collar 80 can limit the elastic deformation of the bush 70 in the second direction D2. In this embodiment, the collar 80 functions as a deformation limiting portion that limits the elastic deformation of the bush 70 in a direction intersecting the first direction D1.

[0090] According to this, even if the valve 30 is attached to the first case portion 21 and the second case portion 22 by a screw S inserted into the bush 70, the positioning of the valve 30 in the second direction D2 can be easily performed.

[0091] (Modified version of the second embodiment) In the second embodiment described above, an example was described in which the flow path forming device 10 includes a collar 80, but it is not limited to this. For example, the flow path forming device 10 may be configured without a collar 80.

[0092] (Third embodiment) Next, a third embodiment will be described with reference to Figures 11 and 12. In this embodiment, the structure for attaching the valve 30 to the first case portion 21 differs from that of the first embodiment. Otherwise, it is the same as the first embodiment. For this reason, in this embodiment, the parts that differ from the first embodiment will be mainly described, and the parts that are the same as the first embodiment may be omitted from the description.

[0093] As shown in Figure 11, the flow path forming device 10 of this embodiment has two snap fits 90 for attaching the valve 30 to the first case portion 21. Each snap fit 90 has a claw portion 91 and a receiving portion 92 into which the claw portion 91 is fitted. The two snap fits 90 are provided on both sides in the third direction D3 relative to the valve mounting portion 33. This pair of snap fits 90 fixes the valve 30 to the first case portion 21 by the claw portion 91 being fitted by the receiving portion 92.

[0094] In this embodiment, the snap-fit ​​90 has a claw portion 91 provided on the valve 30 and a receiving portion 92 provided on the first case portion 21. However, the snap-fit ​​90 may also be configured such that the claw portion 91 is provided on the first case portion 21 and the receiving portion 92 is provided on the valve 30. Furthermore, the valve 30 and the second case portion 22 are attached by the screw S described in the first embodiment.

[0095] The claw portions 91 are provided on the sides of the valve mounting portion 33, which is located on one side in the first direction D1, and on the sides in the third direction D3. The claw portion 91 provided on the side of the valve mounting portion 33 in the third direction D3 is formed to protrude toward the one side in the third direction D3. The claw portion 91 provided on the side of the valve mounting portion 33 in the other side in the third direction D3 is formed to protrude toward the other side in the third direction D3. These claw portions 91 are formed in a triangular plate shape, with the size of the third direction D3 decreasing from one side in the second direction D2 to the other side.

[0096] The locking portion 92 is provided on one side and the other side of the valve mounting portion 33 in the third direction D3 at the first case mounting portion 212, and is formed in a position that overlaps with each of the claw portions 91 in the second direction D2. As shown in Figure 12, the locking portion 92 is formed in the shape of a thin rectangular plate protruding toward one side in the second direction D2. The locking portion 92 also has a fitting portion 921 into which the claw portion 91 is fitted. The fitting portion 921 is formed to penetrate in the third direction D3, and its shape when viewed from the direction along the third direction D3 is rectangular. The fitting portion 921 is sized to accommodate the claw portion 91 inside. Specifically, the size of the fitting portion 921 in the first direction D1 is smaller than the size of the claw portion 91 in the first direction D1, and the size of the claw portion 91 in the second direction D2 is smaller than the size of the claw portion 91 in the second direction D2. Furthermore, the fitting portion 921 may be formed in a trapezoidal shape when viewed from a direction along the third direction D3.

[0097] Here, the size of the claw portion 91 in the first direction D1 is defined as the first claw length L1, the size of the claw portion 91 in the second direction D2 is defined as the second claw length L2, the size of the fitting portion 921 in the first direction D1 is defined as the first fitting length L3, and the size of the fitting portion 921 in the second direction D2 is defined as the second fitting length L4. The first fitting length L3 is formed to be larger than the first claw length L1 by the amount of the expected error in the joint surface 23. Similarly, the second fitting length L4 is formed to be larger than the second claw length L2 by the amount of the expected error in the joint surface 23.

[0098] According to this, even if the case hole distance CL deviates from the design value due to errors in the joint surface 23, such as design errors or assembly errors of the first joint surface 211 and the second joint surface 221, the amount of deviation from the design value can be absorbed by the size of the fitting portion 921. Therefore, even if the case hole distance CL deviates from the design value in the first direction D1, the load on the joint surface 23 caused by this deviation can be suppressed. This, in turn, can suppress damage to the joint surface 23.

[0099] Furthermore, in this embodiment, the second fitting length L4 is formed to be larger than the second claw length L2. Therefore, the position of the valve 30 in the second direction D2 can be adjusted by the fitting portion 921.

[0100] (Modified version of the third embodiment) In the third embodiment described above, an example was described in which the valve 30 is attached to the first case portion 21 by a snap-fit ​​90 and to the second case portion 22 by a screw S, but the invention is not limited to this. For example, the valve 30 may be attached to the first case portion 21 and the second case portion 22 by a snap-fit ​​90.

[0101] (Other embodiments) While representative embodiments of this disclosure have been described above, this disclosure is not limited to the embodiments described above and can be modified in various ways, for example, as follows.

[0102] In the embodiments described above, an example was described in which the joining surface 23 is formed by joining a first joining surface 211 and a second joining surface 221, both of which are formed in a planar shape, but the invention is not limited to this. For example, the joining surface 23 may be formed by fitting and joining a first joining surface 211 and a second joining surface 221, one of which is formed in a convex shape and the other in a concave shape.

[0103] In the above-described embodiment, an example was given in which the flow path forming device 10 is configured to allow adjustment of the mounting position of the valve 30 in the first direction D1, but the device is not limited to this. The flow path forming device 10 may also be configured in which the mounting position of the valve 30 in the first direction D1 is not adjustable.

[0104] In the first embodiment described above, an example was described in which the inner diameter of the first valve hole 3311 is formed to be larger than the inner diameter of the first screw hole N11 by the amount of error in the joint surface 23, and the inner diameter of the second valve hole 3312 is formed to be larger than the inner diameter of the second screw hole N21 by the amount of error in the joint surface 23. In the third embodiment described above, an example was described in which the first fitting length L3 is formed to be larger than the first claw length L1 by the amount of error in the joint surface 23, and the second fitting length L4 is formed to be larger than the second claw length L2 by the amount of error in the joint surface 23. However, the invention is not limited to these examples.

[0105] The inner diameter of the first valve hole 3311 may be larger than the inner diameter of the first screw hole N11 by a predetermined amount, regardless of the tolerance of the mating surface 23. Similarly, the inner diameter of the second valve hole 3312 may be larger than the inner diameter of the second screw hole N21 by a predetermined amount, regardless of the tolerance of the mating surface 23. The first fitting length L3 may be larger than the first claw length L1 by a predetermined amount, regardless of the tolerance of the mating surface 23. Similarly, the second fitting length L4 may be larger than the second claw length L2 by a predetermined amount, regardless of the tolerance of the mating surface 23.

[0106] In the embodiment described above, an example was given in which the fluid flowing through the flow path of the flow path forming device 10 is cooling water, but the invention is not limited to this. The fluid flowing through the flow path of the flow path forming device 10 may be a fluid other than cooling water, such as gas or oil.

[0107] In the above-described embodiment, an example was given in which the flow path forming device 10 is mounted on an electric vehicle, but the invention is not limited to this. For example, the flow path forming device 10 may be applied to vehicles powered by internal combustion engines, fluid control systems used in factories and houses, etc.

[0108] In the embodiments described above, it goes without saying that the elements constituting the embodiments are not necessarily essential, except in cases where they are explicitly stated to be essential or where they are clearly considered essential in principle.

[0109] In the embodiments described above, if numerical values ​​such as the number, numerical values, quantities, or ranges of the components of the embodiment are mentioned, the embodiment is not limited to those specific numbers unless explicitly stated as particularly essential or clearly limited to a specific number in principle.

[0110] In the embodiments described above, when referring to the shape, positional relationships, etc. of the components, the definition is not limited to those shapes, positional relationships, etc., unless otherwise specifically stated or when the definition is fundamentally limited to a particular shape, positional relationship, etc.

[0111] (Features of the present invention) [Claim 1] A device for forming a fluid channel, It comprises three or more components (21, 22, 30), The three or more components include a first component (21) and a second component (22) that form a flow path through which the fluid flows, and a third component (30) that is attached to the first component and the second component. The first part has a first joining surface (211) that joins with the second part, The second part has a second joining surface (221) that joins with the first joining surface, and the second joining surface is joined to the first joining surface and is joined to the first part. The third component is a flow path forming device attached to the first component and the second component, straddling the joining surface (23) formed by joining the first joining surface and the second joining surface. [Claim 2] The flow path forming apparatus according to claim 1, further comprising mounting adjustment units (N11, N21, 331, 70, 90) for adjusting the position of at least one of the mounting positions of the third component in the direction perpendicular to the surface and the mounting position in the direction intersecting the direction perpendicular to the surface, when the direction perpendicular to the joining surface is defined as the surface orthogonal direction. [Claim 3] The third component is attached to the first and second components by a screw (S), and has a third screw hole (331) into which the screw is inserted. The first part has a first screw hole (N11) into which the screw inserted into the third screw hole is inserted and fastened, The second part has a second screw hole (N21) into which the screw inserted into the third screw hole is inserted and fastened, The first screw hole, the second screw hole, and the third screw hole have axes in directions that intersect the plane orthogonal to the plane, The flow path forming apparatus according to claim 2, wherein the mounting adjustment portion is configured such that the inner diameter of the third screw hole is formed to be larger by a predetermined amount than the inner diameter of at least one of the inner diameters of the first screw hole and the second screw hole. [Claim 4] The third component can be attached to the first and second components by a snap-fit ​​(90) having a claw portion (91) and a receiving portion (92) having a hollow fitting portion (921) into which the claw portion fits, The flow path forming apparatus according to claim 2, wherein the mounting adjustment portion has at least one of the following shapes: a shape in which the size of the fitting portion in the direction perpendicular to the surface is larger by a predetermined amount than the size of the claw portion in the direction perpendicular to the surface, and a shape in which the size of the fitting portion in a predetermined direction intersecting the direction perpendicular to the surface is larger by a predetermined amount than the size of the claw portion in the predetermined direction. [Claim 5] The flow path forming apparatus according to claim 3 or 4, wherein the predetermined size is determined based on the error of the joining surface formed by joining the first joining surface and the second joining surface. [Claim 6] The third component is attached to the first and second components by screws (S), The mounting adjustment section is made of an elastic member and has an elastic part (70) having an elastic part hole (71) into which the screw is inserted. The elastic part hole has an axis in a direction that intersects the direction perpendicular to the surface, The flow path forming apparatus according to claim 2, wherein the third component is attached to the first component and the second component by a screw inserted into the elastic hole. [Claim 7] The flow path forming apparatus according to claim 6, wherein the mounting adjustment portion has a deformation limiting portion (80) that limits the elastic deformation of the elastic portion in a direction intersecting the direction perpendicular to the surface. [Claim 8] The three or more components include a flow path section (32) that enables the flow of the fluid between the flow path formed by the first and second components and the third component, a flow path insertion section (213) into which the flow path section is inserted, and a sealing member (40) that suppresses leakage of the fluid between the flow path section and the flow path insertion section. The flow path forming apparatus according to any one of claims 2 to 7, wherein the third component is attached to at least one of the first component and the second component by the flow path portion. [Claim 9] The flow path forming device is applied to a vehicle, The flow path forming apparatus according to any one of claims 1 to 8, wherein the fluid is cooling water. [Explanation of Symbols]

[0112] 21 Part 1 22 Part 2 23 Joint surface 30 Part 3 211 1st joint surface 221 Second joint surface

Claims

1. A device for forming a fluid channel, It comprises three or more components (21, 22, 30), The three or more components include a first component (21) and a second component (22) that form a flow path through which the fluid flows, and a third component (30) that is attached to the first component and the second component. The first component has a first joining surface (211) that joins with the second component, The second part has a second joining surface (221) that joins with the first joining surface, and the second joining surface is joined to the first joining surface and is joined to the first part. The third component is attached to the first and second components, straddling the joint surface, when the surface formed by joining the first joint surface and the second joint surface is defined as the joint surface (23). The mounting adjustment unit (90) further comprises an adjustment unit for adjusting the position of at least one of the mounting positions of the third component in the direction perpendicular to the surface and the mounting position in the direction intersecting the direction perpendicular to the surface, when the direction perpendicular to the joint surface is defined as the surface-orthogonal direction. The third component can be attached to the first and second components by a snap-fit ​​(90) having a claw portion (91) and a receiving portion (92) having a hollow fitting portion (921) into which the claw portion fits, The mounting adjustment portion is a flow path forming device having at least one of the following shapes: a shape in which the size of the fitting portion in the direction perpendicular to the surface is larger by a predetermined amount than the size of the claw portion in the direction perpendicular to the surface; and a shape in which the size of the fitting portion in a predetermined direction intersecting the direction perpendicular to the surface is larger by a predetermined amount than the size of the claw portion in the predetermined direction.

2. The flow path forming apparatus according to claim 1, wherein the predetermined size is determined based on the error of the joining surface formed by joining the first joining surface and the second joining surface.

3. A device for forming a fluid channel, It comprises three or more components (21, 22, 30), The three or more components include a first component (21) and a second component (22) that form a flow path through which the fluid flows, and a third component (30) that is attached to the first component and the second component. The first component has a first joining surface (211) that joins with the second component, The second part has a second joining surface (221) that joins with the first joining surface, and the second joining surface is joined to the first joining surface and is joined to the first part. The third component is attached to the first and second components, straddling the joint surface, when the surface formed by joining the first joint surface and the second joint surface is defined as the joint surface (23). The mounting adjustment unit (70) further comprises an adjustment unit for adjusting the position of at least one of the mounting positions of the third component in the direction perpendicular to the surface and the mounting position in the direction intersecting the direction perpendicular to the surface, when the direction perpendicular to the joint surface is defined as the surface-orthogonal direction. The third component is attached to the first component and the second component by screws (S), The mounting adjustment section is made of an elastic member and has an elastic part (70) having an elastic part hole (71) into which the screw is inserted. The elastic part hole has an axis in a direction that intersects the direction perpendicular to the surface, The third component is a flow path forming device attached to the first component and the second component by the screw inserted into the elastic hole.

4. The flow path forming apparatus according to claim 3, wherein the mounting adjustment portion has a deformation limiting portion (80) that limits the elastic deformation of the elastic portion in a direction intersecting the direction perpendicular to the surface.

5. A device for forming a fluid channel, It comprises three or more components (21, 22, 30), The three or more components include a first component (21) and a second component (22) that form a flow path through which the fluid flows, and a third component (30) that is attached to the first component and the second component. The first component has a first joining surface (211) that joins with the second component, The second part has a second joining surface (221) that joins with the first joining surface, and the second joining surface is joined to the first joining surface and is joined to the first part. The third component is attached to the first and second components, straddling the joint surface, when the surface formed by joining the first joint surface and the second joint surface is defined as the joint surface (23). The mounting adjustment section (N11, N21, 331, 70, 90) further provides adjustment for adjusting the position of at least one of the mounting positions of the third component in the direction perpendicular to the surface and the mounting position in the direction intersecting the direction perpendicular to the surface, when the direction perpendicular to the joint surface is defined as the surface-orthogonal direction. The three or more components include a flow path section (32) that enables the flow of the fluid between the flow path formed by the first and second components and the third component, a flow path insertion section (213) into which the flow path section is inserted, and a sealing member (40) that suppresses leakage of the fluid between the flow path section and the flow path insertion section. The third component is a flow channel forming device attached to at least one of the first component and the second component by the flow channel portion.

6. The flow path forming device is applied to a vehicle, The flow path forming apparatus according to any one of claims 1, 3, or 5, wherein the fluid is cooling water.

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