Element coupling structure

Abstract

To provide a novel, improved element coupling structure that can reduce labor and time for production and assembly by allowing for a reduced number of components or simplification of the structure.MEANS FOR SOLVING THE PROBLEM: An element coupling structure includes, for example: first members having a first surface oriented in a first direction; second members having a supported part in contact with the first surface and supported by the first surface, and a plurality of pressed parts oriented in the first direction at positions apart from the first surface in the first direction; a plurality of pressing members having first pressing parts in contact with the respective pressed parts; and a plurality of coupling members having a plurality of coupled parts provided at the first member, second pressing parts positioned opposite the first surface in relation to a part of each pressing member, and coupling parts connected to the respective coupled parts. Upon coupling of the coupled part and the coupling part, the second pressing part presses the pressing member in a direction toward the first surface, and the first pressing part presses the pressed part in a direction toward the first surface.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to an element coupling structure. [Background technology]

[0002] BACKGROUND ART Element joining structures for joining two members are known in the art (see, for example, Patent Documents 1 to 3). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 8-170426 [Patent Document 2] Patent No. 7118491 [Patent Document 3] Patent No. 3182924 Summary of the Invention [Problem to be solved by the invention]

[0004] As shown in Patent Documents 1 to 3, this type of element joining structure requires a large number of screws and brackets, and the components to be joined require complex processing, which can lead to problems such as the time and effort required to manufacture each component and the time and effort required to assemble the elements together.

[0005] Therefore, one object of the present invention is to provide a new and improved element connection structure that can reduce the labor and time required for manufacturing and assembly, for example, by reducing the number of parts and simplifying the configuration. [Means for solving the problem]

[0006] The element joining structure of the present invention includes, for example, a first member having a first surface facing a first direction, a second member having a supported portion in contact with the first surface and supported by the first surface, and a plurality of pressed portions facing the first direction at positions away from the first surface in the first direction, a plurality of pressing members having first pressing portions in contact with each of the pressed portions, a plurality of joined portions provided on the first member, a second pressing portion located on the opposite side of the first surface with respect to a part of each of the pressing members, and a joining portion joined to each of the joined portions, and as the joined portions are joined to each other, the second pressing portion presses the pressing member in a direction approaching the first surface, and the first pressing portion presses the pressed portion in a direction approaching the first surface. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is an exemplary schematic perspective view of an element connection structure according to the first embodiment. [Figure 2] FIG. 2 is an exemplary schematic exploded perspective view of the element connection structure of the first embodiment. [Figure 3] FIG. 3 is an exemplary schematic plan view of a second member included in the element connection structure of the first embodiment. [Figure 4] FIG. 4 is an exemplary schematic perspective view of the element coupling structure of the second embodiment. [Figure 5] FIG. 5 is an exemplary schematic exploded perspective view of the element connection structure of the second embodiment. [Figure 6] FIG. 6 is an exemplary schematic perspective view of an element coupling structure according to the third embodiment. [Figure 7] FIG. 7 is an exemplary schematic exploded perspective view of the element connection structure of the third embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0008] Exemplary embodiments of the present invention are disclosed below. The configurations of the embodiments described below, as well as the actions and results (effects) obtained from the configurations, are merely examples. The present invention can also be realized by configurations other than those disclosed in the following embodiments. Furthermore, according to the present invention, it is possible to obtain at least one of the various effects (including derivative effects) obtained by the following configurations.

[0009] In this specification, ordinal numbers may be assigned for convenience to distinguish directions, parts, members, components, mechanisms, etc. Furthermore, ordinal numbers do not indicate priority or order, nor do they specify numbers.

[0010] Each figure includes arrows indicating directions, with the X, Y, and Z directions intersecting each other and being substantially perpendicular to each other.

[0011] [First embodiment] 1 is a perspective view of an element connection structure 100A (100) of the first embodiment. As shown in FIG. 1, the element connection structure 100A (100) of the present embodiment includes a first member 10A, two second members 20A (20A-1, 20A-2), four connecting members 30A, and four joining members 40.

[0012] In this embodiment, the connection structure between the first member 10A and the second member 20A-1 is the same as the connection structure between the first member 10A and the second member 20A-2. Furthermore, the two connecting members 30A-1 and 30A-2 engaged with the second member 20A-1 have the same structure, and all of the connecting members 40 have the same structure. The connection structure between the first member 10A and the second member 20A-1 using the connecting member 30A-1 and the connecting member 40 is the same as the connection structure between the first member 10A and the second member 20A-1 using the connecting member 30A-2 and the connecting member 40. Therefore, only the connection structure between the first member 10A and the second member 20A-1 using the connecting member 30A-1 and the connecting member 40 will be described below.

[0013] 2 is an exploded perspective view of the element connection structure 100A. The first member 10A has a hollow quadrangular prism shape, in other words, a rectangular tubular and columnar shape. The first member 10A extends in the Y direction. The second member 20A-1 has a hollow quadrangular prism shape, in other words, a rectangular tubular and columnar shape. The second member 20A-1 extends in the X direction.

[0014] The first member 10A has a surface 10a facing the X direction. The surface 10a is an example of a first surface, and the X direction is an example of a first direction.

[0015] The end 20a of the second member 20A-1 on the opposite side in the X direction is the end of the tubular peripheral wall (side wall) of the second member 20A-1. The end 20a extends intersecting the X direction with a substantially constant width and has a planar shape. A protrusion 20b protrudes from approximately the center in the Z direction of a portion of the end 20a adjacent to the side wall located at the end in the Y direction. The protrusion 20b protrudes in the opposite direction in the X direction with a substantially constant width in the Z direction and a substantially constant thickness in the Y direction. The protrusion 20b has a quadrangular shape in a side view when viewed in the opposite direction in the Y direction. The thickness of the protrusion 20b is the same as the thickness of the tubular wall (side wall) of the second member 20A-1.

[0016] The surface 10a of the first member 10A has an opening 10b into which the protrusion 20b is inserted. The opening 10b has a slit-like shape extending in the Z direction with a substantially constant width in the Y direction. The length of the opening 10b in the Z direction is slightly wider than the width of the protrusion 20b in the Z direction. Furthermore, the width of the opening 10b in the Y direction is slightly wider than the thickness of the protrusion 20b in the Y direction. Therefore, when the protrusion 20b is inserted into the opening 10b, the side surface (inner peripheral surface) of the opening 10b can prevent the protrusion 20b from shifting in the Y and Z directions. In other words, the side surface of the opening 10b has a function of preventing the protrusion 20b, and therefore the second member 20A-1, from shifting in a direction intersecting the X direction relative to the first member 10A, i.e., a function of restricting movement, or in other words, a function of positioning in a direction intersecting the X direction. The opening 10b is an example of a second opening, and the protrusion 20b is an example of a second insertion portion. The two openings 10b provided in the surface 10a are spaced apart from each other in the Y direction.

[0017] When assembling the second member 20A-1 with the first member 10A, as the second member 20A-1 is brought closer to the first member 10A while the protrusion 20b is inserted into the opening 10b, the surface 10a comes into contact with the end portion 20a, thereby restricting movement of the end portion 20a in the opposite direction to the X direction. That is, it can be said that the surface 10a has a function of preventing displacement of the second member 20A-1 relative to the first member 10A in the opposite direction to the X direction, in other words, a function of positioning the second member 20A-1 relative to the first member 10A during assembly.

[0018] The connecting member 30A-1 has a flat plate portion 30a and a protrusion 30b. The flat plate portion 30a extends across the X direction and, in this embodiment, has a generally rectangular, plate-like shape with four sides aligned along the Y and Z directions. The protrusion 30b protrudes in the opposite direction from the end of the flat plate portion 30a in the Y direction. The flat plate portion 30a is also provided with a through-hole 30c that penetrates through it in its thickness direction, i.e., in the X direction.

[0019] The joining member 40 is a bolt having a head 40a and an externally threaded portion 40b. The externally threaded portion 40b passes through a through-hole 30c provided in the connecting member 30A-1 and is joined to an internally threaded hole 10c provided in the first member 10A. The internally threaded hole 10c is provided in a wall having a surface 10a of the first member 10A and opens to the surface 10a.

[0020] FIG. 3 is a plan view of the second member 20A-1 viewed in the opposite direction to the Y direction. As shown in FIGS. 2 and 3, an opening 20d into which the protrusion 30b is inserted is provided on the outer surface 20c of the second member 20A-1. The opening 20d opens in the Y direction and has a rectangular shape with four sides extending in the X and Z directions. The opening 20d is also a through-hole that penetrates the side wall of the second member 20A-1. As shown in FIG. 2, the protrusion 30b of the connecting member 30A-1 is inserted into the opening 20d. The opening 20d is an example of a first opening, and the protrusion 30b is an example of a first insertion portion.

[0021] As shown in FIGS. 2 and 3, a region 20d1 located at the end of the side surface of the opening 20d opposite to the X direction faces the X direction and extends in the Z and Y directions.

[0022] During assembly, the worker first moves the second member 20A-1 in the opposite direction to the X direction, bringing it closer to the first member 10A. The worker then inserts the protrusion 20b of the second member 20A-1 into the opening 10b of the first member 10A, bringing the end 20a of the second member 20A-1 into contact with the surface 10a of the first member 10A. The worker then inserts the protrusion 30b of the connecting member 30A-1 into the opening 20d of the second member 20A-1. This results in the connecting member 30A-1 and the second member 20A-1 engaging in the X direction. The worker then inserts the male threaded portion 40b of the coupling member 40 into the through-hole 30c of the connecting member 30A-1 and engages and tightens the male threaded portion 40b of the coupling member 40 into the female threaded hole 10c of the first member 10A. A locking member, such as a washer, may be interposed between the head 40a and the connecting member 30A-1.

[0023] As the coupling member 40 is tightened, the head 40a presses the connecting member 30A-1 in the opposite direction to the X direction. Here, as shown in FIG. 3, the region 20d1 of the opening 20d is offset (separated) from the end 20a in the X direction by a distance δ. In this case, when the end 20a is in contact with the surface 10a, the region 20d1 is separated from the surface 10a in the X direction by the distance δ. When the coupling member 40 is tightened in this state, the male threaded portion 40b moves in the opposite direction to the X direction while engaging with the female threaded hole 10c, and accordingly, the head 40a presses the peripheral portion of the through hole 30c of the flat plate portion 30a in the direction toward the surface 10a. At this time, because the connecting member 30A-1 has a required bending rigidity, the protrusion 30b presses the region 20d1 and therefore the second member 20A-1 in the opposite direction to the X direction while the connecting member 30A-1 is elastically deformed. That is, the head 40a of the joining member 40 presses the flat portion 30a of the connecting member 30A-1 in a direction approaching the surface 10a, and the protrusion 30b of the connecting member 30A-1 presses the region 20d1 on the side surface of the opening 20d of the second member 20A-1 in a direction approaching the surface 10a. As a result, the second member 20A-1 is pressed in the opposite direction to the X direction toward the surface 10a of the first member 10A by the connecting member 30A-1, and the first member 10A and the second member 20A-1 are integrated with each other in a state in which movement in a direction intersecting the X direction is restricted by the protrusion 20b and the opening 10b.

[0024] In this configuration, the female threaded hole 10c of the first member 10A is an example of a coupled portion. The male threaded portion 40b of the joining member 40 is an example of a coupling portion. The head 40a is an example of a second pressing portion. The connecting member 30A-1 is an example of a pressing member. The region 20d1 on the side surface of the opening 20d provided in the second member 20A-1 is an example of a pressed portion. The protrusion 30b of the connecting member 30A-1 is an example of a first pressing portion. Furthermore, the end portion 20a of the second member 20A-1 is an example of a supported portion supported by the surface 10a.

[0025] When connecting one first member 10A and one second member 20A, the element connection structure 100A has multiple connection structures, each having a connecting member 30A and a connecting member 40, at multiple locations spaced apart from each other, thereby stabilizing the relative posture of the first member 10A and the second member 20A.

[0026] As described above, in this embodiment, as the female threaded hole 10c (coupled portion) and the male threaded portion 40b (coupled portion) couple to each other, the head 40a (second pressing portion) presses the connecting member 30A-1 (pressing member) in a direction approaching the surface 10a (first surface), and the protrusion 30b (first pressing portion) presses the region 20d1 (pressed portion) in a direction approaching the surface 10a. According to this configuration, the connecting member 30A-1 is only engaged with the second member 20A-1 and is not coupled to the second member 20A-1 by the coupling members 40. This allows the number of coupling members 40 in the element coupling structure 100A to be reduced accordingly. Furthermore, compared to a case where the coupling member is configured as an L-shape to couple to both the first member 10A and the second member 20A-1, the coupling member 30A-1 can be configured as a flat plate that substantially conforms to the surface 10a, thereby further simplifying the configuration of the connecting member 30A-1 and, ultimately, the element coupling structure 100A. In other words, according to this embodiment, the number of parts of the element connection structure 100 can be reduced, and the shape and configuration can be simplified, which ultimately has the effect of further reducing the effort, time, and cost required to manufacture or assemble the element connection structure 100.

[0027] Furthermore, in this embodiment, the second member 20A and the connecting member 30A-1 (pressing member) are configured to be engageable by inserting the protrusion 30b (first insertion portion) into the opening 20d (first opening). This configuration realizes a structure in which the connecting member 30A-1 pressed by the joining member 40 can press the second member 20A, using a relatively simple configuration in which the opening 20d is provided on the outer surface 20c and a relatively easy process in which the protrusion 30b of the connecting member 30A-1 is brought close to the opening 20d and inserted. Therefore, in this respect as well, this embodiment has the effect of further reducing the effort, time, and cost required for manufacturing or assembling the element connection structure 100.

[0028] Furthermore, in this embodiment, the end 20a (supported portion) and the region 20d1 (pressed portion) are not aligned in the X direction. If the end 20a and the region 20d1 were aligned in the X direction, a required length would be required to ensure the rigidity and strength of the pipe wall (side wall) of the second member 20A between the end 20a and the region 20d1. Therefore, the distance between the end 20a and the region 20d1 would have to be greater than the distance δ shown in FIG. 3 . The greater the distance δ, the greater the pressing force required to bend the connecting member 30A-1 and, consequently, the greater the tightening torque of the joining member 40, making it difficult to realize the element connection structure 100. To address this issue, for example, another member might be interposed between the connecting member 30A-1 and the surface 10a of the first member 10A to reduce the amount of deflection of the flat connecting member 30A-1. However, this could increase the number of parts and the complexity of the assembly process. In this regard, in the present embodiment, as described above, the end portion 20a and the region 20d1 are not aligned in the X direction, and therefore it is easier to set the distance δ to a smaller value, which makes it possible to prevent an increase in the tightening torque and also to prevent an increase in the number of parts, a complicated configuration, and an increase in the effort required for the assembly process.

[0029] In this embodiment, a portion of the side surface of the opening 10b (second opening) limits movement of the protrusion 20b (second insertion portion) in a direction intersecting the X direction (first direction) of the second member 20A. This configuration makes it possible to suppress misalignment of the second member 20A with respect to the first member 10A in the direction intersecting the X direction with a relatively simple configuration.

[0030] [Second embodiment] 4 is a perspective view of an element connection structure 100B (100) of the second embodiment. As shown in FIG. 4, the element connection structure 100B (100) of the present embodiment includes a first member 10B, two second members 20B (20B-1, 20B-2), four connecting members 30B, and four joining members 40.

[0031] In this embodiment, the connection structure between the first member 10B and the second member 20B-1 is the same as the connection structure between the first member 10B and the second member 20B-2. Furthermore, the two connecting members 30B-1 and 30B-2 engaged with the second member 20B-1 have the same structure, and all of the connecting members 40 have the same structure. The connection structure between the first member 10B and the second member 20B-1 using the connecting member 30B-1 and the connecting member 40 is the same as the connection structure between the first member 10B and the second member 20B-1 using the connecting member 30B-2 and the connecting member 40. Therefore, the following description will only focus on the connection structure between the first member 10B and the second member 20B-1 using the connecting member 30B-1 and the connecting member 40. This embodiment achieves the same effects as the first embodiment with the same configuration.

[0032] 5 is an exploded perspective view of the element connection structure 100B. The first member 10B has a hollow quadrangular prism shape, in other words, a rectangular tubular and columnar shape. The first member 10B extends in the Y direction. In contrast, the second member 20B-1 has a hollow cylindrical shape, in other words, a circular tubular and columnar shape. The second member 20B-1 extends in the X direction.

[0033] As is clear from comparing Figure 5 with Figure 2, the first member 10B, the second member 20B-1, and the connecting member 30B-1 have the same components as the first member 10A, the second member 20A-1, and the connecting member 30A-1 of the first embodiment, respectively. However, while the second member 20A of the first embodiment has a rectangular tubular and columnar shape, the second member 20B-1 of the present embodiment has a circular tubular and columnar shape, and therefore the shapes of the opening 10b, the end portion 20a, the protrusions 20b, the protrusions 30b, etc. are different from those of the first embodiment.

[0034] That is, because the end portion 20a and the protrusion 20b are part of the cylindrical sidewall, they each have an arc-like shape with a substantially constant width. The opening 10b into which the protrusion 20b is inserted also has an arc-like shape with a substantially constant width. Furthermore, the opening 10b has a shape that is slightly larger than the protrusion 20b in a plan view when viewed in the direction opposite the X direction. Therefore, in this embodiment as well, the side surface of the opening 10b can limit the movement of the protrusion 20b, and therefore the second member 20C, in a direction intersecting the X direction.

[0035] An arc-shaped notch 30b1 is provided at the end of the connecting member 30B-1 opposite in the Y direction, and the protrusion 30b protrudes from the bottom (middle portion) of the notch 30b1 in the opposite direction in the Y direction. This configuration allows the connecting member 30B-1 and the second member 20B-1 to contact each other over a wider area when the protrusion 30b is inserted into the opening 20d and the connecting member 30B-1 and the second member 20B-1 are engaged in the X direction. This provides the advantage of stabilizing the relative position of the connecting member 30B-1 with the second member 20B-1, compared to a configuration in which the end of the connecting member 30B-1 other than the protrusion 30b does not contact the outer surface 20c of the second member 20B-1 in this engaged state.

[0036] [Third embodiment] 6 is a perspective view of an element connection structure 100C (100) of the third embodiment. As shown in FIG. 6, the element connection structure 100C (100) of the present embodiment includes a first member 10C, two second members 20C (20C-1, 20C-2), four connecting members 30C, and four joining members 40.

[0037] In this embodiment, the connection structure between the first member 10C and the second member 20C-1 is the same as the connection structure between the first member 10C and the second member 20C-2. Furthermore, the two connecting members 30C-1 and 30C-2 engaged with the second member 20C-1 have the same structure, and all of the connecting members 40 have the same structure. The connection structure between the first member 10C and the second member 20C-1 using the connecting member 30C-1 and the connecting member 40 is the same as the connection structure between the first member 10C and the second member 20C-1 using the connecting member 30C-2 and the connecting member 40. Therefore, the following description will only focus on the connection structure between the first member 10C and the second member 20C-1 using the connecting member 30C-1 and the connecting member 40. This embodiment achieves the same effects as the first embodiment with the same configuration.

[0038] 7 is an exploded perspective view of the element connection structure 100C. The first member 10C has a hollow quadrangular prism shape, in other words, a rectangular tubular and columnar shape. The first member 10C extends in the Y direction. In contrast, the second member 20C-1 has a solid quadrangular prism shape. The second member 20C-1 extends in the X direction.

[0039] As is clear from comparing Figure 7 with Figure 2, the first member 10C, the second member 20C-1, and the connecting member 30C-1 have the same components as the first member 10A, the second member 20A-1, and the connecting member 30A-1 of the first embodiment, respectively. However, the shapes of the opening 10b, the end 20a, the protrusion 20b, the opening 20d, the connecting member 30C, etc. are different from those of the first embodiment.

[0040] That is, because the end 20a is an end of the solid second member 20C-1, it has a rectangular shape with a larger area than that of the first embodiment. The width of the protrusion 20b in the Z direction is the same as the width of the second member 20C-1 in the Z direction. The shape of the opening 10b into which the protrusion 20b is inserted is a rectangular shape with a wider width than that of the first embodiment. Furthermore, the opening 10b has a shape that is slightly larger than the protrusion 20b in a plan view when viewed in the opposite direction to the X direction. Therefore, in this embodiment as well, the side surface of the opening 10b can limit the movement of the protrusion 20b, and therefore the second member 20C-1, in a direction intersecting the X direction.

[0041] The opening 20d is provided as a notch, groove, or recess in the outer surface 20c. The opening 20d extends in the Z direction with a substantially constant width in the X direction and a substantially constant depth in the Y direction, and is open at its end in the Z direction and at its end opposite the Z direction. The end 30e of the connecting member 30C opposite the Y direction, which engages with the opening 20d, is provided with a notch 30f recessed in the Y direction. By moving the connecting member 30C toward the second member 20C-1 in the opposite direction of the Y direction, an engagement state is achieved in which the connecting member 30C-1 and the second member 20C-1 are engaged in the X direction such that the notch 30f covers the bottom of the opening 20d in an inverted U-shape. In this case, a region 30g of the flat portion 30a near the bottom of the notch 30f is an example of a first pressing portion. This configuration allows the connecting member 30C-1 and the second member 20C-1 to come into contact over a wider area when they are engaged with each other, which has the advantage that the relative position of the connecting member 30C-1 to the second member 20C-1 is more likely to be stable.

[0042] While the embodiments of the present invention have been described above, they are merely examples and are not intended to limit the scope of the invention. The above embodiments can be implemented in various other forms, and various omissions, substitutions, combinations, and modifications can be made without departing from the spirit of the invention. Furthermore, the specifications of each configuration, shape, and the like (structure, type, direction, model, size, length, width, thickness, height, number, arrangement, position, material, etc.) can be appropriately modified and implemented.

[0043] For example, the number of second members connected to the first member may be one, or may be three or more. The shapes of the first member and the second member may be variously modified, and for example, the second member may be a plate-like member. Furthermore, an assembly may be formed by connecting elements such as frames and panels at multiple locations using the element connecting structure.

[0044] Although the element connection structure in the above embodiment includes two connection structures of the same configuration for each connection location, it may include three or more connection structures. Also, the element connection structure may include multiple connection structures that are different from each other.

[0045] Additionally, both the first and second members may be solid, and the element coupling structure may comprise a similar coupling structure regardless of whether the first and second members are solid or hollow. [Explanation of symbols]

[0046] 10A~10C...First member 10a... side (first side) 10b...Aperture (second aperture) 10c…Female screw hole (joint part) 20A~20C,20A-1,20A-2,20B-1,20B-2,20C-1,20C-2...Second member 20a...End (supported part) 20b...Protrusion (second insertion portion) 20c…External surface 20d...Aperture (first aperture) 20d1...area (side surface, pressed portion) 30A to 30C, 30A-1, 30A-2, 30B-1, 30B-2, 30C-1, 30C-2...Connecting member (pressing member) 30b...protrusion (first pressing portion, first insertion portion) 30g area (first pressure area) 40...Connecting member 40a...head (second pressing portion) 40b... Male threaded portion (joint portion) 100,100A~100C…Element combination structure X…direction (first direction) Y…direction (second direction)

Claims

1. a first member having a first surface facing a first direction; a second member including a supported portion in contact with the first surface and supported by the first surface, and a plurality of pressed portions facing the first direction at positions spaced apart from the first surface in the first direction; a plurality of pressing members each having a first pressing portion in contact with each of the pressed portions; a plurality of coupled portions provided on the first member; a plurality of coupling members each including a second pressing portion located on the opposite side of the first surface with respect to a portion of each of the pressing members, and a coupling portion coupled to each of the coupled portions; Equipped with An element connection structure in which, as the joinable portion and the joining portion are joined, the second pressing portion presses the pressing member in a direction approaching the first surface, and the first pressing portion presses the pressable portion in a direction approaching the first surface.

2. a first opening that opens in a direction intersecting the first direction is provided on an outer surface of the second member, and the pressed portion is provided on a part of a side surface of the first opening; the pressing member has a first insertion portion that has the pressing portion and is inserted into the first opening, The element connection structure according to claim 1 , wherein the second member and the pressing member are configured to be engageable with each other when the first insertion portion enters the first opening.

3. The element connection structure according to claim 1 , wherein the supported portion and the pressed portion are not aligned in the first direction.

4. a second opening that opens toward the first direction is provided in the first surface; the supported portion and a second insertion portion that protrudes in the opposite direction to the first direction beyond the supported portion and is inserted into the second opening are provided at an end of the second member in the opposite direction to the first direction, The element connection structure according to claim 1 , wherein a portion of a side surface of the second opening limits movement of the second insertion portion in a direction intersecting the first direction of the second member.

5. The element connection structure according to claim 1 , wherein the pressing member has a flat plate shape intersecting the first direction.

6. The element connection structure according to claim 1 , wherein the first member has a columnar shape extending in a second direction intersecting the first direction.

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