Panel connection structure

Abstract

This invention provides a panel connection structure that improves the workability of panel manufacturing and panel connection work, and also improves the appearance after installation. [Solution] A first frame member 20 is provided on one of two panels 10, each having a core material 13 between a pair of front and back facing materials 11 and 12, and a second frame member 30 is provided on the other panel. The first frame member has a head-receiving groove 24 on the panel surface side for accommodating the head 51 of a fixing screw 50, and a pair of locking ribs 25 are provided on the opposing inner surfaces of the head-receiving groove, and an inwardly opening screw member insertion groove 27 is provided on the back side of the panel. The second frame member has a recessed groove 32 in the middle of the contact piece into which a fixing screw is inserted, and fine grooves 33 are provided on the opposing inner surfaces of the recessed groove that engage with the fixing screw. The first frame member and the second frame member are in contact and connected by fixing screws that pass through the head-receiving groove and the screw member insertion groove, and the opening of the head-receiving groove is covered with a strip-shaped decorative cover 60 that engages with both locking ribs.

Description

Technical Field

[0001] This invention relates to a panel connection structure, and more particularly to a panel connection structure for connecting two panels at right angles by means of a screw member.

Background Art

[0002] Generally, in buildings such as booths, clean rooms, refrigerators, and freezers arranged outdoors or inside buildings, two panels provided with a heat-insulating core material between front and back integrated facing materials are connected at right angles by screw members to form the corner portions of the building.

[0003] In a building configured as described above, it is necessary to hide the screw members at the panel connection portion at the corner for improving the appearance.

[0004] Conventionally, a method is known in which an insertion hole for a screw member is provided at the end of a panel, and in a state where two panels are connected, the opening of the insertion hole is covered with a decorative board, a cap, or the like (see, for example, Patent Documents 1, 2, and 3).

[0005] Also, as a method different from the above method, when connecting panels, a washer is bitten into the frame material of the panel along with the screw connection of the screw member, and after making the head of the screw member flush with the upper surface of the washer, a method of covering the head of the screw member with a decorative cover is known (see, for example, Patent Document 4).

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Summary of the Invention

[0007] However, in the methods described in Patent Documents 1, 2, and 3, numerous screw holes must be machined during panel manufacturing, and many decorative panels or caps are also required to cover the holes. Therefore, there are concerns about the ease of installation in both the panel manufacturing and panel connection processes. Furthermore, since numerous decorative panels and caps are exposed on the exterior of the building, there are concerns that the building's appearance will not be improved.

[0008] On the other hand, in the method described in Patent Document 4, a washer is used to embed the head of the screw member into the frame material, making the head of the screw member and the top surface of the washer flush, which raises concerns about the need for careful installation. Also, because a washer is used, there is a concern that a gap equal to the thickness of the washer will be created between the decorative cover and the screw member.

[0009] This invention has been made in view of the above circumstances, and aims to provide a panel connecting structure that can improve the workability of panel manufacturing and panel connecting work, as well as improve the appearance after installation. [Means for solving the problem]

[0010] To solve the above problems, the panel connecting structure according to this invention is a panel connecting structure in which two panels, each having a core material between a pair of front and back surface materials, are connected perpendicularly to each other by a screw member, wherein a first frame member is provided on the periphery of one of the two panels, and a second frame member is provided on the periphery of the other panel, wherein the first frame member has an inner piece located on the core material side and an outer piece facing the inner piece, and on the panel surface side there is an outwardly opening head-receiving groove for accommodating the head of the screw member, and a pair of locking ribs are provided on the opposing inner surfaces of the head-receiving groove, and an inwardly opening screw member insertion groove is provided on the back surface side of the inner piece and the outer piece, wherein the second frame member has a recessed groove in the middle of the contact piece located on the core material side into which the threaded portion of the screw member is inserted, and on the opposing inner surfaces of the recessed groove there are continuous grooves in the depth direction of the recessed groove that engage with the threaded portion of the screw member, The first frame material and the second frame material are in contact with each other, and are connected by the screw member that penetrates the bottom of the head housing groove and the bottom of the screw member insertion groove, and the opening of the head housing groove is covered by a strip-shaped decorative cover having a pair of locking leg pieces that are inserted into the head housing groove (Claim 1).

[0011] With this configuration, the horizontal contact piece of the first frame member and the contact piece of the second frame member are brought into contact, and the threaded portion of the screw member, which penetrates the bottom of the head housing groove and the bottom of the screw member insertion groove, engages with the uneven ridges provided in the recessed groove of the second frame member to connect the two panels. After that, the entire opening of the head housing groove can be covered with a strip-shaped decorative cover to conceal the head of the screw member.

[0012] In this invention, the first frame member has a hollow portion with a substantially L-shaped cross-section formed by a horizontal contact piece bent from the end of the outer piece, a vertical piece bent from the end of the horizontal contact piece, a horizontal piece bent from the lower end of the vertical piece, and a horizontal connecting piece that forms the bottom of the head receiving groove, and preferably the screw member insertion groove is formed by the vertical piece and an upright piece that stands up from the horizontal piece (Claim 2).

[0013] This configuration allows for weight reduction of the first frame material and facilitates screw connection of the screw member through the bottom of the head housing groove and the bottom of the screw member insertion groove into the recessed groove of the second frame material. Furthermore, the panel having the first frame material and the panel having the second frame material can be firmly connected when the horizontal contact piece of the first frame material and the contact piece of the second frame material are in contact.

[0014] Furthermore, in this invention, it is preferable that the second frame member has a pair of guide pieces protruding from both sides of the opening side of the groove, which are inserted into the screw member insertion groove of the first frame member (Claim 3). In this case, it is even more preferable that the pair of guide pieces are inclined so that their tip ends are close to each other (Claim 4).

[0015] With this configuration, when the two panels abut at a right angle, the pair of guide pieces protruding from both sides of the opening of the groove in the second frame material are inserted into the screw member insertion groove of the first frame material, thereby facilitating the positioning of the panel having the first frame material and the panel having the second frame material. In this case, by providing the pair of guide pieces inclined so that their tips are close to each other, the insertion of the pair of guide pieces into the screw member insertion groove can be facilitated, further facilitating positioning.

[0016] In addition, in this invention, the decorative cover preferably comprises a flat cover body that covers the opening of the head housing groove and a pair of elastically deformable locking legs that stand upright on the back side of the cover body, with locking claws provided at the tips of the locking legs, and snap-fitting between the locking ribs provided in the head housing groove and the locking claws (Claim 5).

[0017] This configuration facilitates the attachment of the decorative cover to the opening of the head-receiving groove, while also ensuring that the decorative cover is securely attached. [Effects of the Invention]

[0018] According to the present invention, since it is configured as described above, the following remarkable effects can be obtained.

[0019] (1) According to the invention described in claim 1, since the entire opening of the head receiving groove can be covered by the strip-shaped decorative cover to hide the head of the screw member, the workability of panel manufacturing and panel connection work can be improved, and the appearance after construction can be improved.

[0020] (2) According to the invention described in claim 2, in addition to the above (1), the screw connection of the screw member can be further facilitated, and the panels can be firmly connected.

[0021] (3) According to the inventions described in claims 3 and 4, since the positioning of the panel can be facilitated, in addition to the above (1), the workability can be further improved.

[0022] (4) According to the invention described in claim 5, the attachment of the decorative cover to the opening of the head receiving groove can be facilitated and can be surely attached. Therefore, in addition to the above (1), the workability can be further improved.

Brief Description of the Drawings

[0023] [Figure 1] It is a perspective view showing a booth having a panel connection structure according to this invention. [Figure 2] It is a schematic front view of the above booth. [Figure 3] It is a schematic cross-sectional view (a) taken along the line I-I of FIG. 2 and an enlarged cross-sectional view (b) of part II of (a). [Figure 4] It is a schematic cross-sectional view (a) taken along the line III-III of FIG. 3, an enlarged cross-sectional view (b) of part IV of (a), and an enlarged cross-sectional view (c) of part V of (a). [Figure 5] It is a cross-sectional view showing the lower attachment state of the wall panel in this invention. [Figure 6] It is a cross-sectional view (a) showing the connection state between wall panels in this invention and an enlarged cross-sectional view (b) of part VI of (a). [Figure 7]This is an exploded cross-sectional view showing a first frame member, a second frame member, fixing screws, and a decorative cover provided in a wall panel according to this invention. [Figure 8] This is a cross-sectional view showing the connection between the wall panel and the ceiling panel in this invention. [Figure 9] These are a partial cross-sectional plan view (a) showing the state before the cushioning material is placed at the connection between wall panels in this invention, and a partial cross-sectional plan view (b) showing the state after the cushioning material has been placed. [Figure 10] This is an enlarged cross-sectional view of section VII in Figure 3(a). [Figure 11] This is a perspective view showing the first frame material in this invention. [Figure 12] This is a perspective view showing the second frame material in this invention. [Modes for carrying out the invention]

[0024] The embodiments for carrying out this invention will be described in detail below with reference to the attached drawings. This section describes the case where a building having the panel connection structure according to this invention is applied to a booth.

[0025] As shown in Figures 1 to 4, Booth 1 is provided to define the space used by the user, with wall panels 10 arranged in a roughly rectangular shape in plan view, and the wall panels 10 that are connected at right angles to each other are connected by fixing screws 50, which are screw-type members. In addition, a ceiling panel 10A is arranged to cover the entire area of ​​the opening in the ceiling, and the wall panels 10 and ceiling panel 10A that are connected at right angles to each other are connected by fixing screws 50, which are screw-type members. Decorative covers 60 are provided at the connection points between the wall panels 10 to conceal the fixing screws 50 from the outside. In this case, the booth 1 contains, for example, lighting fixtures 70, a monitor display 73, a desk 74, and chairs (not shown). A fire extinguisher 71 is also installed on the ceiling. Furthermore, a door frame 7 is provided on the front wall panel 10 of the booth 1, and a door 8 is installed in the door frame 7 so that it can be opened and closed.

[0026] As shown in Figures 3 to 8, the wall panel 10 has a core material 13 between a pair of front and back surface materials 11 and a back surface material 12. A first frame material 20 is provided at one end of the wall panel 10 in the width direction, and a third frame material 40 is provided at the other end in the width direction. A second frame material 30 is provided at the upper end of the wall panel 10, and a third frame material 40 is provided at the lower end of the wall panel 10. In this case, the first frame material 20, the second frame material 30, and the third frame material 40 are formed from, for example, extruded profiles made of aluminum alloy. The surface material 11 and back surface material 12 are made of steel plate, and the core material 13 is made of, for example, a foamed thermal insulation material such as foamed polyurethane.

[0027] As described above, the lower end of the wall panel 10 is held by a rectangularly framed base frame material 5. In this case, as shown in Figures 1 to 4, the base frame material 5 is fixed by fixing screws 6 to the four sides of a base to which a floor sheet 4 is attached to the upper surface of a rectangular plywood 3 laid on the floor 2. As shown in Figure 4(b), the base frame material 5 has a pair of crank-shaped ribs 5b protruding from opposite sides of a channel-shaped base 5a with an open top, which support the lower end of the wall panel 10, and the bottom of the base 5a is fixed to the plywood 3 via the floor sheet 4 by fixing screws 6. The lower end of the wall panel 10 held by the base frame material 5 is fixed to the base frame material 5 by wall panel fixing screws 6a.

[0028] Similar to the wall panel 10, the ceiling panel 10A has a core material 13 between a pair of front and back surface materials 11 and a back material 12. A first frame material 20 is provided at one end of the ceiling panel 10A in the width direction, and a third frame material (not shown) is provided at the other end in the width direction.

[0029] As shown in Figures 6, 7, and 11, the first frame member 20 has an inner piece 21 located on the core material 13 side and an outer piece 22 facing the inner piece 21. On the panel surface side of these pieces, there is an outwardly opening head-receiving groove 24 for accommodating the head 51 of the fixing screw 50. A pair of locking ribs 25 are provided on the opposing inner surfaces of the head-receiving groove 24. On the back surface side of the panel of the inner piece 21 and the outer piece 22, there is a screw member insertion groove 27 that opens inward via a horizontal contact piece 26 bent at a right angle from the end of the outer piece 22. A V-shaped strip 23a is provided longitudinally in the center of the horizontal connecting piece 23 that forms the bottom of the head-receiving groove 24 to position the fixing screw 50 when it passes through (see Figure 11).

[0030] Furthermore, the first frame member 20 has a hollow portion 28 with a roughly L-shaped cross-section, formed by a horizontal contact piece 26, a vertical piece 27a bent from the end of the horizontal contact piece 26, a horizontal piece 27b bent from the lower end of the vertical piece 27a, and a horizontal connecting piece 23 that forms the bottom of the head housing groove 24. In this case, the screw member insertion groove 27 is formed by the vertical piece 27a and an upright piece 27c that rises from the horizontal piece 27b. A V-shaped strip 23b is provided longitudinally in the center of the horizontal piece 27b that forms the bottom of the screw member insertion groove 27 to position the fixing screw 50 when it passes through (see Figure 11).

[0031] As shown in Figures 7, 8, and 12, the second frame member 30 has a groove 32 in the middle of the contact piece 31 located on the core member 13 side into which the threaded portion 52 of the fixing screw 50 is inserted. In addition, fine grooves 33 that engage with the threaded portion 52 of the fixing screw 50 are continuously provided on the opposing inner surfaces of the groove 32 in the depth direction of the groove 32. Furthermore, a pair of guide pieces 34 are provided protruding from both sides of the opening of the groove 32, which are inserted into the screw member insertion groove 27 of the first frame member 20. In this case, the pair of guide pieces 34 are provided inclined so that their tips are close to each other. A V-shaped fine groove 32a is provided longitudinally in the center of the bottom of the groove 32 of the second frame member 30 (see 12).

[0032] As shown in Figures 5 and 10, the third frame member 40 has rectangular hollow sections 43 on both sides of an outer recessed groove 41 located in the center, and uneven ridges 33 are provided continuously in the depth direction of the outer recessed groove 41 on the opposing sides of the outer recessed groove 41.

[0033] The decorative cover 60 is formed from, for example, an extruded aluminum alloy profile or a synthetic resin member, and consists of a flat cover body 61 that covers the opening of the head receiving groove 24 of the first frame material 20, and a pair of elastically deformable locking legs 62 that stand upright on the back side of the cover body 61. The tip of each locking leg is provided with a locking claw 63 that snaps into the locking rib 25. In this case, the locking claw 63 is formed from an inclined surface 63a that rises outward from the tip of the locking leg 62 toward the base end of the locking leg 62, and a locking surface 63b that bends toward the locking leg 62 from the tip of the inclined surface 63a.

[0034] When connecting wall panels 10 configured as described above at right angles to each other, as shown in Figure 6, the lower end of one wall panel 10 to be connected is erected into the base frame 5, and then the lower end of the other wall panel 10 to be connected is erected into the base frame 5, so that the two wall panels 10, 10 come into contact at right angles. In this state, the contact piece 31 of the second frame member 30 provided on one wall panel 10 and the horizontal contact piece 26 of the first frame member 20 provided on the other wall panel 10 come into contact, so that the two wall panels 10, 10 come into contact at right angles. When the two wall panels 10, 10 come into contact at right angles, the pair of guide pieces 34 of the second frame member 30 provided on one wall panel 10 are inserted into the screw member insertion groove 27 of the first frame member 20 provided on the other wall panel 10, which facilitates the contact of the two wall panels 10, 10 and also facilitates positioning.

[0035] With the two wall panels 10, 10 in contact at a right angle, the fixing screw 50 is driven from the outside of the first frame member 20 via a washer 53, passing through the V-shaped strips 23a on the horizontal connecting piece 23 of the first frame member 20 and the V-shaped strips 23b on the horizontal piece 27b, and engaging with the grooved strips 33 on the groove 32 of the second frame member 30. In this state, the head 51 of the fixing screw 50 contacts the bottom of the head housing groove 24 of the first frame member 20, i.e., the horizontal connecting piece 23, via the washer 53, and the two wall panels 10, 10 are connected at a right angle.

[0036] With both wall panels 10, 10 connected at a right angle, the opening of the head housing groove 24 is covered by a strip-shaped decorative cover 60 having a pair of locking leg pieces 62 that engage with both locking ribs 25 provided in the head housing groove 24 of the first frame member 20. In this case, as shown in Figure 6(b), a locking claw 63 is formed at the tip of the locking leg piece 62, having an inclined surface 63a that rises outward from the tip of the locking leg piece 62 toward the base end of the locking leg piece 62, and a locking surface 63b that bends toward the locking leg piece 62 from the tip of the inclined surface 63a. By forming a locking claw 63 at the tip of the locking leg piece 62 in this manner, when the locking leg piece 62 of the decorative cover 60 is inserted into the head housing groove 24, the inclined surface 63a of the locking claw 63 comes into contact with the tip of the locking rib 25, causing both locking leg pieces 62 to deform in a direction that brings them closer together. After the inclined surface 63a passes the tip of the locking rib 25, both locking leg pieces 62 deform in a direction that moves them apart, and the decorative cover 60 is attached with the locking surface 63b snap-fitted into place on the back side of the locking rib 25.

[0037] When connecting the wall panel 10 and ceiling panel 10A, configured as described above, at right angles to each other, the ceiling panel 10A is brought into contact with the upper end of the wall panel 10 at a right angle, as shown in Figure 8. In this state, the contact piece 31 of the second frame member 30 provided on the wall panel 10 and the horizontal contact piece 26 of the first frame member 20 provided on the ceiling panel 10A come into contact, causing the wall panel 10 and ceiling panel 10A to come into contact at a right angle. When bringing the wall panel 10 and ceiling panel 10A into contact at a right angle, the pair of guide pieces 34 of the second frame member 30 provided on the wall panel 10 are inserted into the screw member insertion groove 27 of the first frame member 20 provided on the ceiling panel 10A, thereby facilitating contact between the wall panel 10 and the ceiling panel 10A and facilitating positioning.

[0038] With the wall panel 10 and the ceiling panel 10A in contact at a right angle, the fixing screw 50 is driven from the outside of the first frame member 20 via a washer 53, passing through the V-shaped strips 23a on the horizontal connecting piece 23 of the first frame member 20 and the V-shaped strips 23b on the horizontal piece 27b, and engaging with the grooved strips 33 on the groove 32 of the second frame member 30. In this state, the head 51 of the fixing screw 50 contacts the bottom of the head housing groove 24 of the first frame member 20, i.e., the horizontal connecting piece 23, via the washer 53, and the wall panel 10 and the ceiling panel 10A are connected at a right angle.

[0039] Furthermore, the first frame member 20 provided on the wall panel 10 is structurally shorter than the wall panel 10, so it is lower than the other wall panel 10 to which it is connected, creating a gap between it and the ceiling panel 10A. To fill this gap, as shown in Figure 9, a cushioning material 64 is attached to the longitudinal end face of the first frame member 20. After the cushioning material 64 is attached to the four corners of the booth 1, the cushioning material 64 is compressed by the ceiling panel 10A which is connected to the upper end of the wall panel 10.

[0040] When connecting wall panels 10 in a straight line, as shown in Figure 10, a plate-shaped joint member 44 is inserted into the outer recessed groove 41 of the third frame member 40 provided on the wall panel 10, and the outer contact surfaces of the hollow portions 43 of both wall panels 10, 10 are brought into contact to connect them in a straight line. In this case, since the opposing sides of the outer recessed groove 41 are provided with continuous grooves 33 in the depth direction of the outer recessed groove 41, the plate-shaped joint member 44 is inserted into the outer recessed groove 41 without any gaps, and the connection between the two wall panels 10, 10 can be strengthened.

[0041] Next, we will briefly explain the assembly procedure for Booth 1. First, prepare a base by attaching a floor sheet 4 to the top surface of a rectangular plywood board 3 that will be laid on the floor 2, and then fixing the base frame material 5 to the four sides of the base with fixing screws 6.

[0042] When connecting two wall panels 10, the first wall panel 10, corresponding to one of the above, is erected onto the base frame 5, and the second wall panel 10, corresponding to the other of the above, is erected onto the base frame 5, so that the first and second wall panels 10 come into contact at a right angle. In this state, the contact piece 31 of the second frame member 30 provided on the first wall panel 10 and the horizontal contact piece 26 of the first frame member 20 provided on the second wall panel 10 come into contact, so that both wall panels 10, 10 come into contact at a right angle.

[0043] With the first wall panel 10 and the second wall panel 10 in contact at a right angle, the fixing screws 50 are connected at a right angle by engaging with the grooves 32 of the second frame member 30 via washers 53 from the outside of the first frame member 20.

[0044] Next, the third wall panel 10 is erected onto the base frame material 5, and the outwardly protruding portion of the plate-shaped joint member 44, which is half inserted into the outward recessed groove 41 of the third frame material 40 provided on the second wall panel 10, is inserted into the outward recessed groove 41 of the third frame material 40 provided on the third wall panel 10, thereby connecting the second wall panel 10 and the third wall panel 10 in a straight line.

[0045] Next, the fourth and subsequent wall panels 10 are erected onto the base frame 5, and, as described above, the wall panels 10 are connected at right angles to each other, as well as in a straight line, to assemble the side walls of the booth 1 into a rectangular shape. A door frame 7 is fixed to one of the wall panels 10. A door 8 will be attached to the door frame 7 after the booth 1 is assembled.

[0046] After assembling the side walls of booth 1, cushioning material 64 is attached to the upper edges of the wall panels 10 at the four corners of booth 1. Then, the first ceiling panel 10A is erected on the upper edges of the wall panels 10, followed by the second ceiling panel 10A. With the first and second ceiling panels 10A connected, the ceiling panels 10A are fixed to the wall panels 10 with fixing screws (not shown).

[0047] After fixing the ceiling panel 10A to the wall panel 10 as described above, a strip-shaped decorative cover 60 is attached to the head-receiving groove 24 of the first frame material 20 at the four connecting parts of the wall panel 10, thereby concealing the heads 51 of the fixing screws 50 inside the head-receiving groove 24 from the outside. When attaching the decorative cover 60, the lower end of the decorative cover 60 is inserted into the base frame material 5, and the upper end of the decorative cover 60 is aligned with the back material 12 of the ceiling panel 10A. Then, it is tapped in to ensure there are no gaps, and the locking leg pieces 62 of the decorative cover 60 are securely engaged with the locking ribs 25.

[0048] According to the panel connection structure of the embodiment configured as described above, the entire opening of the head housing groove 24 can be covered by the strip-shaped decorative cover 60, thereby concealing the heads 51 of the fixing screws 50. This improves the workability of panel manufacturing and panel connection work, as well as the appearance after installation.

[0049] Furthermore, the first frame member 20 has a hollow section 28 with a roughly L-shaped cross-section, formed by a horizontal contact piece 26, a vertical piece 27a bent from the end of the horizontal contact piece 26, a horizontal piece 27b bent from the lower end of the vertical piece 27a, and a horizontal connecting piece 23 that forms the bottom of the head housing groove 24. This allows for weight reduction of the first frame member 20 and facilitates the screw 50 to pass through the bottom of the head housing groove 24 and the bottom of the screw member insertion groove 27 and screw-connect to the recessed groove 32 of the second frame member 30. In addition, the wall panel 10 or ceiling panel 10A having the first frame member 20 and the wall panel 10 having the second frame member 30 can be firmly connected when the horizontal contact piece 26 of the first frame member 20 and the contact piece 31 of the second frame member 30 are in contact.

[0050] Furthermore, the second frame member 30 has a pair of guide pieces 34 projecting from both sides of the opening of the groove 32, with their tips inclined toward each other and inserted into the screw member insertion groove 27 of the first frame member 20. Therefore, the positioning of the wall panel 10 or ceiling panel 10A having the first frame member 20 and the wall panel 10 having the second frame member 30 can be easily facilitated.

[0051] Furthermore, the decorative cover 60 consists of a flat cover body 61 that covers the opening of the head housing groove 24, and a pair of elastically deformable locking legs 62 that stand upright on the back side of the cover body 61. The tips of the locking legs 62 are provided with locking claws 63 that snap into the locking rib 25. Therefore, the decorative cover 60 can be easily attached to the opening of the head housing groove 24, and the decorative cover 60 can be securely attached.

[0052] In the above embodiment, the case in which the panel connection structure according to this invention is applied to a booth was described. However, the panel connection structure according to this invention is not limited to this, and can also be applied to structures such as clean rooms, refrigerators, and freezers located outdoors or inside buildings, and the same effects as described above can be obtained. [Explanation of Symbols]

[0053] 1 booth 20. First frame material 21 Inner piece 22 Outer piece 23 Horizontal connection piece 24 Head-receiving grooves 25 Locking ribs 26 Horizontal contact piece 27 Screw member insertion groove 27a vertical piece 27b horizontal piece 27c standing piece 30 Second frame material 31 Contact piece 32 grooves 33 Uneven strips 34 Guide Pieces 50 Fixing screws (screw components) 51 Head 52 Threaded part 60 Cosmetic Cover 61 Cover body 62 Locking leg piece 63 Locking claws

Claims

1. A panel connecting structure in which two panels, each having a core material between a pair of front and back surface materials, are connected at right angles to each other by screw members, A first frame member is provided on the periphery of one of the two panels mentioned above, and a second frame member is provided on the periphery of the other panel. The first frame material described above has an inner piece located on the core material side and an outer piece facing the inner piece, and on the panel surface side there is an outwardly opening head-receiving groove for accommodating the head of the screw member, and a pair of locking ribs are provided on the opposing inner surfaces of the head-receiving groove, and on the back surface side of the panel of the inner piece and the outer piece there is an inwardly opening screw member insertion groove, The second frame material described above has a groove in the middle of the contact piece located on the core material side into which the threaded portion of the screw member is inserted, and fine grooves that engage with the threaded portion of the screw member are continuously provided on the opposing inner surfaces of the groove in the direction of the depth of the groove. The first frame member and the second frame member are in contact with each other, and are connected by the screw member that penetrates the bottom of the head housing groove and the bottom of the screw member insertion groove. The opening of the head housing groove is covered by a strip-shaped decorative cover having a pair of locking legs that are inserted into the head housing groove. A panel connecting structure characterized by the following features.

2. A panel connecting structure according to claim 1, The first frame member described above has a hollow section with a substantially L-shaped cross-section, formed by a horizontal contact piece bent from the end of the outer piece, a vertical piece bent from the end of the horizontal contact piece, a horizontal piece bent from the lower end of the vertical piece, and a horizontal connecting piece that forms the bottom of the head housing groove. The screw member insertion groove is formed by the vertical piece and the upright piece that rises from the horizontal piece. A panel connecting structure characterized by the following features.

3. A panel connecting structure according to claim 1, The second frame member described above has a pair of guide pieces protruding from both sides of the opening of the groove, which are inserted into the screw member insertion groove of the first frame member. A panel connecting structure characterized by the following features.

4. A panel connecting structure according to claim 3, The pair of guide pieces described above are arranged so that their tip ends are inclined toward each other. A panel connecting structure characterized by the following features.

5. A panel connecting structure according to claim 1, The decorative cover described above consists of a flat cover body that covers the opening of the head housing groove and a pair of elastically deformable locking legs that stand upright on the back side of the cover body, with locking claws provided at the tips of the locking legs, and snap-fitting between the locking ribs provided in the head housing groove and the locking claws. A panel connecting structure characterized by the following features.

Images