JP7509592B2 - Resin Structure - Google Patents

Description

The present invention relates to a resin structure having multiple resin bodies that can be assembled together.

Conventionally, resin structures have been proposed that are constructed by assembling multiple resin bodies together, such as electrical connection boxes (e.g., relay boxes) mounted on vehicles. For example, one conventional electrical connection box has a resin main body case that holds electronic components, and a resin lower cover that is assembled to the bottom of the main body case. In this electrical connection box, the lower cover is fixed to the main body case by inserting and locking a lock piece that extends from the lower cover toward the main body case into a locking hole in the main body (see, for example, Patent Document 1).

JP 2004-064881 A

The conventional resin structure described above has an attachment portion (so-called attachment foot) that extends from the outer peripheral wall of the lower cover toward an attachment target such as a vehicle frame, and is fixed to the attachment target by a method such as bolt fastening. However, for example, if an excessive external force is applied to the resin structure after the attachment portion is fixed to the attachment target, the attachment portion may be damaged, such as deformed. From the viewpoint of maintaining a state in which the resin structure is properly fixed to the attachment target, it is desirable to suppress such damage to the attachment portion as much as possible.

One of the objects of the present invention is to provide a resin structure with an attachment portion that has excellent strength for fixing the resin structure to an object to be attached.

In order to achieve the above-mentioned object, the resin structure according to the present invention is characterized by the following [1] to [4].
[1]
A resin structure having a box-like shape and to be attached to a predetermined attachment target,
a first resin body; a second resin body assembled to a lower end portion of the first resin body; and a cylindrical portion protruding from a wall portion of the resin structure from inside a box of the resin structure toward outside the box,
The first resin body is
a first protruding portion protruding from the first resin body toward the outside of the box and constituting an upper portion of the cylindrical portion;
The second resin body is
a second protruding portion protruding from the second resin body toward the outside of the box and constituting a lower portion of the tubular portion; an attachment portion extending from the second resin body toward the attachment target and to be attached to the attachment target; and a connecting portion extending downward from the second protruding portion toward the attachment target and connecting the second protruding portion and the attachment portion.
It is a resin structure.
[2]
A resin structure having a box-like shape and to be attached to a predetermined attachment target,
a first resin body; a second resin body assembled to the first resin body; and a cylindrical portion protruding from a wall portion of the resin structure from inside a box of the resin structure to outside the box,
The first resin body is
a first protruding portion protruding from the first resin body toward the outside of the box and constituting a part of the cylindrical portion;
The second resin body is
a second protruding portion protruding from the second resin body toward the outside of the box and constituting another portion of the tubular portion; an attachment portion extending from the second resin body toward the attachment target and to be attached to the attachment target; and a connecting portion connecting the second protruding portion and the attachment portion,
Further, a drainage hole is provided through a portion near the boundary between the mounting portion and the connecting portion toward the mounting target.
It is a resin structure.
[3]
In the resin structure according to the above [1] or [2],
The connecting portion is
The second resin body protrudes from the wall portion so as to extend from the second protruding portion toward the attachment target.
It is a resin structure.
[4]
In the resin structure according to the above item [2],
The mounting portion is
The mounting portion has an inclined surface that is inclined so as to approach the mounting object from the base end portion toward the extension end portion,
The drainage hole is
Provided at a position adjacent to the inclined surface,
It is a resin structure.

According to the resin structure of the configuration [1] above, the attachment portion (e.g., attachment foot) extending from the second resin body constituting the resin structure toward the attachment target and the tubular portion (e.g., entrance/exit for electric wires) protruding from the wall of the resin structure are connected via a connecting portion. This results in the formation of a single assembly including the attachment portion, connecting portion, and tubular portion. Therefore, compared to conventional resin structures in which the attachment portion is independent, the rigidity of the attachment portion is increased, and by dispersing an external force applied to the attachment portion throughout the entire assembly, it is possible to suppress the occurrence of excessive stress concentration locally in the attachment portion. Therefore, the resin structure of this configuration has a stronger attachment portion than conventional resin structures.

As another effect, for the same reason as above, the strength of the tubular portion included in the above-mentioned assembly is also improved. Therefore, for example, even if a bundle of electric wires for electrically connecting various electronic components housed in the resin structure to an external device is inserted into the tubular portion and the bundle of electric wires is pressed against the tubular portion with a large force, it is possible to suppress the occurrence of excessive stress concentration locally on the tubular portion. Therefore, even if the tubular portion is configured by assembling multiple members (i.e., the first protrusion and the second protrusion), it is possible to suppress unintended deformation of the tubular portion. As a result, the boundary between the first protrusion and the second protrusion constituting the tubular portion and the boundary between the first resin body and the second resin body are properly maintained in a sealed state. Therefore, the resin structure of this configuration is also excellent in waterproofness.

According to the resin structure of the configuration [2] above, a drain hole is provided near the boundary between the attachment portion and the connecting portion. As a result, even if the resin structure is exposed to water, for example, the water around the connecting portion is quickly removed through the drain hole, and water retention around the connecting portion is suppressed. Therefore, water is suppressed from entering the inside of the resin structure through the gaps in the above-mentioned boundaries around the connecting portion (for example, the boundary between the first resin body and the second resin body, or the boundary between the first protruding portion and the second protruding portion that constitute the tubular portion). In this way, the resin structure of this configuration can increase the strength of the attachment portion and the tubular portion through the connecting portion, while preventing the connecting portion from interfering with drainage when exposed to water.

According to the resin structure of the configuration [3] above, the connecting portion is configured to protrude from the wall portion of the second resin body and extend from the second protruding portion toward the attachment target. This allows, for example, when the resin structure is fixed to the attachment target, the connecting portion can be brought into contact with the attachment target in addition to the attachment portion. In other words, the connecting portion can be used as part of the attachment portion. As a result, local stress concentration in the attachment portion can be further suppressed.

According to the resin structure of the configuration [4] above, an inclined surface that slopes toward the object to be attached is provided in the mounting portion, and a drain hole is provided at a position adjacent to the inclined surface. As a result, for example, when the resin structure is exposed to water, the water around the mounting portion can be quickly moved away from the above-mentioned boundary along the inclined surface, and the water remaining on the inclined surface can be removed through the drain hole. As a result, the waterproofness of the resin structure can be further improved.

In this way, the present invention can provide a resin structure with an attachment portion that has excellent strength for fixing the resin structure to the attachment target.

The present invention has been briefly described above. The details of the present invention will be further clarified by reading the following detailed description of the invention with reference to the accompanying drawings.

FIG. 1 is a perspective view of a resin structure according to an embodiment of the present invention. FIG. 2 is a perspective view of the resin structure shown in FIG. 1 in a state in which the main body case and the lower cover are separated. 3A is an enlarged view of part A in FIG. 1, and FIG. 3B is a perspective view of part A in FIG. 1 as viewed from a different angle. 4(a) is a front view of part A in FIG. 1, FIG. 4(b) is a cross-sectional view taken along line BB in FIG. 4(a), and FIG. 4(c) is a cross-sectional view taken along line CC in FIG. 4(b). FIG. 5 is a cross-sectional view taken along line DD of FIG.

<Embodiment>
Hereinafter, with reference to the drawings, a resin structure 1 according to an embodiment of the present invention shown in Fig. 1 will be described. The resin structure 1 is typically a relay box (electrical connection box) that is attached to a frame of a vehicle or the like (hereinafter referred to as an "attachment target") and that houses electronic components such as a relay.

As shown in Figures 1 and 2, the resin structure 1 is a box-shaped body including a main case 10 in which electronic components such as relays (and other components, not shown) are housed, and a lower cover 20 that is attached to the lower end of the main case 10 so as to cover the lower opening of the main case 10. Each of the main case 10 and the lower cover 20 is a resin molded body. The main case 10 corresponds to the "first resin body" of the present invention, and the lower cover 20 corresponds to the "second resin body" of the present invention.

For ease of explanation, the following definitions are used as shown in Figures 1 to 5: "up-down direction," "circumferential direction," "inner-outer direction," "up," "down," "inner," and "outer." The "up-down direction," "circumferential direction," and "inner-outer direction" are mutually perpendicular. When the resin structure 1 is mounted on a vehicle, the "up-down direction" corresponds to the up-down direction of the vehicle. The "circumferential direction" corresponds to the circumferential direction of a peripheral wall 11 (to be described later) of the main body case 10 and a peripheral wall 21 (to be described later) of the lower cover 20, and the "inner-outer direction" corresponds to the thickness direction of the peripheral walls 11 and 21. Each of the components that make up the resin structure 1 will be described below in order.

First, the main body case 10 will be described. As shown in FIG. 2, the main body case 10 has a generally rectangular cylindrical peripheral wall 11 that extends in the vertical direction. The internal space of the main body case 10 defined by the peripheral wall 11 is provided with a number of storage compartments 12 for storing electronic components such as relays (and other components).

The lower edge of the generally rectangular frame of the peripheral wall 11 is provided with upper protrusions 13 at multiple locations (two locations in this example) in the circumferential direction, which protrude outward from the peripheral wall 11. An upper recess 14 is formed on the underside of the upper protrusions 13, which is recessed upward in an arc shape and extends inward and outward. The upper recess 14 communicates the inside and outside of the main body case 10 in the inward and outward directions. When the main body case 10 and the lower cover 20 are fully assembled (see FIG. 1), the upper protrusions 13 and the lower protrusions 23 of the lower cover 20, which will be described later, are combined with each other to form a cylindrical portion 2 that protrudes outward from the resin structure 1 (see FIG. 1, etc.). The cylindrical portion 2 defines an electric wire insertion hole 3 that communicates the inside and outside of the resin structure 1 (see FIG. 1, etc.).

On the outer surface of the lower edge of the generally rectangular frame of the peripheral wall 11, at multiple circumferential locations (six locations in this example) other than where the upper protrusions 13 are provided, there are provided locking portions 15 that define locking holes (not shown) that penetrate in the up-down direction between the peripheral wall 11 and the upper protrusions 13. Locking portions 15 having a similar structure are also provided on both circumferential side surfaces of each upper protrusion 13. When the main body case 10 and the lower cover 20 are fully assembled (see FIG. 1), the locking holes of the multiple locking portions 15 engage with multiple lock pieces 25 (described later) provided on the lower cover 20 (see also FIG. 3, etc.).

The outer surface of the peripheral wall 11 is provided with a mounting foot 16 that extends outward from the outer surface of the peripheral wall 11 at one location in the circumferential direction. The mounting foot 16 is a portion that is used when fixing the main body case 10 that constitutes the resin structure 1 to an object to be attached. The underside of the tip of the mounting foot 16 functions as a mounting surface 17 that contacts the portion to be attached to the object to be attached. The tip of the mounting foot 16 is formed with a bolt hole 18 that penetrates in the vertical direction and opens to the mounting surface 17.

Next, the lower cover 20 will be described. As shown in FIG. 2, the lower cover 20 integrally comprises a peripheral wall 21 that is a generally rectangular cylinder extending in the vertical direction, and a bottom wall portion 22 that is a generally rectangular flat plate that closes the lower end opening of the peripheral wall 21. In this example, a region excluding the upper edge of a portion of the peripheral wall 21 in the circumferential direction (the portion extending horizontally at the back of the page in FIG. 2) extends in the circumferential direction at an angle from the vertical direction.

Lower protrusions 23 are provided at multiple circumferential locations (two locations in this example) on the upper edge of the generally rectangular frame-shaped peripheral wall 21, corresponding to the multiple upper protrusions 13 of the main body case 10. A lower recess 24 is formed on the upper surface of the lower protrusion 23, recessed downward in an arc shape and extending inward and outward. The lower recess 24 connects the inside and outside of the lower cover 20 in the inward and outward directions.

On the outer surface of the upper edge of the generally rectangular frame of the peripheral wall 21, there are provided lock pieces 25 that extend upward in a tongue-like shape at multiple locations (six locations in this example) in the circumferential direction other than the locations where the lower protrusions 23 are provided, corresponding to the multiple locking portions 15 of the main case 10. Lock pieces 25 having a similar structure are also provided on both circumferential side surfaces of each lower protrusion 23.

The outer surface of the peripheral wall 21 is provided with mounting feet 26 at two circumferential locations, which extend outward and downward from the outer surface of the peripheral wall 21. The mounting feet 26 are used when fixing the lower cover 20 constituting the resin structure 1 to the object to be attached. The lower surface of the tip of the mounting foot 26 functions as a mounting surface 27 that contacts the portion to be attached of the object to be attached. The upper surface of the mounting foot 26 forms an inclined surface 28 that slopes downward (to approach the object to be attached) from the base end to the tip of the mounting foot 26 (see also FIG. 5).

At the tip of the mounting foot 26, a countersunk hole 29 is formed, recessed downward so as to cut out the tip of the inclined surface 28. At the lower part of the countersunk hole 29 (at the tip of the mounting foot 26), a bolt hole 31 is formed, which penetrates in the vertical direction and opens to the mounting surface 27.

As shown in FIG. 2, one of the two mounting feet 26 (the right side in FIG. 2) is arranged so as to be adjacent to one of the two lower protrusions 23 (the right side in FIG. 2) in the circumferential direction. Hereinafter, for ease of explanation, the lower protrusion 23 and the mounting foot 26 arranged adjacent to each other in the circumferential direction may be referred to as the "lower protrusion 23A" and the "mounting foot 26A", respectively.

The lower cover 20 has a connecting portion 32 that connects the lower protrusion 23A and the mounting foot 26A in the circumferential direction. Specifically, as shown in Figs. 3 and 4, the connecting portion 32 integrally includes a connecting body portion 33 that extends downward (to the mounting object) from the lower protrusion 23A and protrudes outward from the peripheral wall 21, and a connecting execution portion 34 that connects the opposing side ends of the connecting body portion 33 and the mounting foot 26A in the circumferential direction and extends in the vertical direction. The lower end surface of the connecting body portion 33 functions as a mounting surface 35 that contacts the mounting portion of the mounting object.

By providing the connecting portion 32 in this manner, a single assembly is formed that includes the mounting foot 26A, the connecting portion 32, and the lower protrusion 23A. Therefore, the rigidity of the mounting foot 26A itself is increased compared to when the connecting portion 32 is not provided.

Furthermore, in the lower cover 20, as shown in Figs. 4(b) and 4(c), a drainage hole 36 penetrating in the vertical direction is defined by the mounting foot 26A, the peripheral wall 21, the connecting body portion 33, and the connecting execution portion 34. As shown in Fig. 3(a), the upper end opening of the drainage hole 36 is continuous with the side edge of the inclined surface 28 of the mounting foot 26A. Above, each member constituting the resin structure 1 has been described.

Next, the assembly of the main body case 10 and the lower cover 20 will be described. To assemble the main body case 10 and the lower cover 20, first, the main body case 10 and the lower cover 20 are positioned so that the main body case 10 is located above the lower cover 20, as shown in FIG. 2.

Next, the main case 10 and the lower cover 20 are brought closer together in the vertical direction, and the lower edge of the peripheral wall 11 of the main case 10 is fitted with the upper edge of the peripheral wall 21 of the lower cover 20. This fitting is carried out so that the lower edge of the peripheral wall 11 is positioned outside the upper edge of the peripheral wall 21, so that the multiple locking pieces 25 are inserted into the engagement holes of the multiple engagement parts 15, and so that the multiple upper protrusions 13 and the multiple lower protrusions 23 are combined with each other.

As this fitting progresses, when the locking projection 15a provided in the locking hole of the locking portion 15 engages with the locking projection 25a provided on the lock piece 25 (see FIG. 4(c)), the assembly of the main body case 10 and the lower cover 20 is completed. As a result, the resin structure 1 shown in FIG. 1 is obtained.

When the main body case 10 and the lower cover 20 are fully assembled (see FIG. 1), the engaging protrusions 15a and the locking protrusions 25a are engaged with each other, preventing the main body case 10 and the lower cover 20 from separating in the vertical direction.

When the main body case 10 and the lower cover 20 are assembled (see FIG. 1), as shown in FIG. 3 etc., the upper protrusion 13 and the lower protrusion 23 are combined in the vertical direction to form a tubular portion 2 that protrudes outward from the resin structure 1. Inside the tubular portion 2, the upper recess 14 of the upper protrusion 13 and the lower recess 24 of the lower protrusion 23 are combined in the vertical direction to define a cylindrical electric wire insertion hole 3 that communicates between the inside and outside of the resin structure 1. A bundle of electric wires (not shown) is inserted into the electric wire insertion hole 3 to electrically connect various electronic components etc. housed in the housing portion 12 (see FIG. 2) of the resin structure 1 to an external device.

The resin structure 1 with the electric wire bundle inserted through the electric wire insertion hole 3 of the cylindrical portion 2 is attached to an attachment target such as a vehicle frame. To attach the resin structure 1 to the attachment target, bolts (not shown) are inserted from above into the bolt hole 18 of one attachment foot 16 provided on the main body case 10 and the bolt holes 31 of two attachment feet 26 provided on the lower cover 20, respectively, and the bolts are fastened and fixed to the corresponding attachment portions of the attachment target so that the attachment surface 17 of one attachment foot 16, the attachment surface 27 of the two attachment feet 26, and the attachment surface 35 of the connecting portion 32 are in face-to-face contact with the corresponding attachment surfaces of the attachment target. In this way, the resin structure 1 is fixed to the attachment target via the one attachment foot 16, the two attachment feet 26, and the connecting portion 32.

<Action and Effects>
As described above, according to the resin structure 1 of this embodiment, the mounting foot 26A extending from the lower cover 20 constituting the resin structure 1 toward the mounting target and the lower protruding portion 23A (i.e., the cylindrical portion 2) protruding from the wall portion of the resin structure 1 are connected via the connecting portion 32. This forms a single assembly including the mounting foot 26A, the connecting portion 32, and the lower protruding portion 23A (i.e., the cylindrical portion 2). Therefore, compared to a single mounting foot such as the conventional resin structure described above, the rigidity of the mounting foot 26A itself is increased, and the external force applied to the mounting foot 26A is dispersed throughout the entire assembly, thereby suppressing the occurrence of excessive stress concentration locally on the mounting foot 26A. Therefore, the resin structure 1 of this embodiment has a mounting foot 26A with a superior strength compared to the conventional resin structure.

As another effect, for the same reason as above, the strength of the lower protrusion 23A (i.e., the cylindrical portion 2) included in the above-mentioned assembly is also improved. Therefore, for example, when a bundle of electric wires for electrically connecting various electronic components housed in the resin structure 1 to an external device is inserted into the cylindrical portion 2, even if the bundle of electric wires is pressed against the cylindrical portion 2 with a large force, it is possible to suppress the occurrence of excessive stress concentration locally in the cylindrical portion 2. Therefore, even if the cylindrical portion 2 is composed of two members, the upper protrusion 13 and the lower protrusion 23, the strength of the cylindrical portion 2 is increased, so that unintended deformation of the cylindrical portion 2 can be suppressed. As a result, the boundary between the upper protrusion 13 and the lower protrusion 23 constituting the cylindrical portion 2 and the boundary between the main body case 10 and the lower cover 20 (for example, the portion where the peripheral wall 11 and the peripheral wall 21 are butted as shown in FIG. 5) are properly maintained in a sealed state. Therefore, the resin structure 1 according to this embodiment is also excellent in waterproofness.

Furthermore, according to the resin structure 1 of this embodiment, a drain hole 36 is provided near the boundary between the mounting foot 26A and the connecting portion 32. As a result, even if the resin structure 1 is exposed to water, for example, water around the connecting portion 32 is quickly drained through the drain hole 36, and water is prevented from accumulating around the connecting portion 32. Therefore, water is prevented from entering the resin structure 1 through the gaps in the above-mentioned boundaries around the connecting portion 32 (for example, the boundary between the main body case 10 and the lower cover 20, or the boundary between the upper protrusion 13 and the lower protrusion 23 that constitute the tubular portion 2). In this way, the resin structure 1 of this embodiment can prevent the connecting portion 32 from interfering with drainage when exposed to water, while increasing the strength of the mounting foot 26A and the lower protrusion 23A (i.e., the tubular portion 2) through the connecting portion 32.

Furthermore, according to the resin structure 1 of this embodiment, the connecting portion 32 is configured to protrude from the peripheral wall 21 of the lower cover 20 and extend downward from the lower protruding portion 23 toward the attachment target. This allows, for example, when the resin structure 1 is fixed to the attachment target, not only the attachment surface 27 of the attachment foot 26A but also the attachment surface 35 of the connecting portion 32 to come into contact with the attachment target. As a result, it is possible to more reliably prevent localized stress concentration on the attachment foot 26A when an external force is applied to the attachment foot 26A.

Furthermore, according to the resin structure 1 of this embodiment, the mounting foot 26A is provided with an inclined surface 28 that slopes downward toward the mounting target, and a drainage hole 36 is provided at a position adjacent to the inclined surface 28. As a result, for example, if the resin structure 1 is exposed to water, the water around the mounting foot 26A can be quickly moved away from the above-mentioned boundary along the inclined surface 28, and the water remaining on the inclined surface 28 can be discharged through the drainage hole 36. As a result, the waterproofness of the resin structure 1 can be further improved.

<Other forms>
The present invention is not limited to the above-described embodiments, and various modifications can be adopted within the scope of the present invention. For example, the present invention is not limited to the above-described embodiments, and appropriate modifications, improvements, etc. are possible. In addition, the material, shape, size, number, arrangement location, etc. of each component in the above-described embodiments are arbitrary as long as they can demonstrate the present invention, and are not limited.

In the above embodiment, the drainage hole 36 that penetrates the lower cover 20 in the vertical direction is defined by the mounting foot 26A, the peripheral wall 21, the connecting body portion 33, and the connecting execution portion 34. However, such a drainage hole 36 does not necessarily have to be formed.

Furthermore, in the above embodiment, the connecting portion 32 extends downward from the lower protrusion 23 toward the attachment target, and its lower end surface functions as the attachment surface 35 that contacts the attachment target. In contrast, the connecting portion 32 may not have a shape that extends downward from the lower protrusion 23 toward the attachment target, and may have a configuration in which its lower end surface does not contact the attachment target.

Here, the features of the above-described embodiment of the resin structure 1 according to the present invention will be briefly summarized and listed in the following [1] to [4].
[1]
A resin structure (1) having a box-like shape and to be attached to a predetermined attachment target,
A first resin body (10);
A second resin body (20) assembled to the first resin body (10);
a cylindrical portion (2) protruding from a wall portion of the resin structure (1) from inside the box of the resin structure (1) toward the outside of the box,
The first resin body (10) is
A first protruding portion (13) protruding from the first resin body (10) toward the outside of the box and constituting a part of the cylindrical portion (2),
The second resin body (20) is
a second protruding portion (23A) that protrudes from the second resin body (20) toward the outside of the box and constitutes another portion of the tubular portion (2); an attachment portion (26A) that extends from the second resin body (20) toward the attachment target and is to be attached to the attachment target; and a connecting portion (32) that connects the second protruding portion (23A) and the attachment portion (26A).
Resin structure (1).
[2]
The resin structure (1) according to the above-mentioned [1],
The mounting portion further includes a drain hole (36) that penetrates a portion near the boundary between the mounting portion (26A) and the connecting portion (32) toward the mounting target.
Resin structure (1).
[3]
In the resin structure (1) according to the above [1] or [2],
The connecting portion (32) is
The second protrusion (23A) protrudes from the wall portion of the second resin body (20) so as to extend from the second protrusion portion (23A) toward the attachment target.
Resin structure (1).
[4]
In the resin structure (1) according to any one of the above [2] and [3],
The mounting portion (26A) is
The mounting portion (26A) has an inclined surface (28) that is inclined so as to approach the mounting object from the base end toward the extension end,
The drain hole (36) is
Located adjacent to the inclined surface (28),
Resin structure (1).

REFERENCE SIGNS LIST 1 resin structure 2 cylindrical portion 10 main body case (first resin body)
13 Upper protrusion (first protrusion)
20 Lower cover (second resin body)
23A Lower protrusion (second protrusion)
26A Mounting foot (mounting part)
28 Inclined surface 32 Connection portion 36 Drain hole

Claims (4)

A resin structure having a box-like shape and to be attached to a predetermined attachment target,
a first resin body; a second resin body assembled to a lower end portion of the first resin body; and a cylindrical portion protruding from a wall portion of the resin structure from inside a box of the resin structure toward outside the box,
The first resin body is
a first protruding portion protruding from the first resin body toward the outside of the box and constituting an upper portion of the cylindrical portion;
The second resin body is
a second protruding portion protruding from the second resin body toward the outside of the box and constituting a lower portion of the tubular portion; an attachment portion extending from the second resin body toward the attachment target and to be attached to the attachment target; and a connecting portion extending downward from the second protruding portion toward the attachment target and connecting the second protruding portion and the attachment portion.
Resin structure. A resin structure having a box-like shape and to be attached to a predetermined attachment target,
a first resin body; a second resin body assembled to the first resin body; and a cylindrical portion protruding from a wall portion of the resin structure from inside a box of the resin structure to outside the box,
The first resin body is
a first protruding portion protruding from the first resin body toward the outside of the box and constituting a part of the cylindrical portion;
The second resin body is
a second protruding portion protruding from the second resin body toward the outside of the box and constituting another portion of the tubular portion; an attachment portion extending from the second resin body toward the attachment target and to be attached to the attachment target; and a connecting portion connecting the second protruding portion and the attachment portion,
Further, a drainage hole is provided through a portion near the boundary between the mounting portion and the connecting portion toward the mounting target.
Resin structure. The resin structure according to claim 1 or 2,
The connecting portion is
The second resin body protrudes from the wall portion so as to extend from the second protruding portion toward the attachment target.
Resin structure. The resin structure according to claim 2,
The mounting portion is
The mounting portion has an inclined surface that is inclined so as to approach the mounting object from the base end portion toward the extension end portion,
The drainage hole is
Provided at a position adjacent to the inclined surface,
Resin structure.

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