Sheet fasteners

Abstract

The present invention provides a plate fixing device that can detachably secure a plate, positioned so that its flat surface is parallel to the side surface of the profile, by sandwiching it together with the profile from both sides. [Solution] The plate fixing device 1a of the present invention is a plastic product used to detachably fix a plate to a profile, and comprises a fixing device body 2 having a bearing portion 4 and a base plate 3 arranged parallel to the flat surface of the plate, and a gripping body 8 in which a part is inserted so as to be removable into a shaft insertion hole 5 provided in the bearing portion 4 of the base plate 3.

Description

Technical Field

[0001] The present invention relates to a plate fixing tool for detachably fixing a plate to a long member (hereinafter referred to as a profile) formed by extrusion processing of an aluminum alloy or the like and having a substantially rectangular cross section. In particular, the present invention relates to a plate fixing tool capable of fixing a plate having a flat surface arranged parallel to the side surface of the profile from both sides so as to sandwich the profile together.

Background Art

[0002] An article housed in a transport container may have a buffer plate installed in the transport container so that it does not move freely due to vibration or the like during transportation. Conventionally, this plate has been fixed to the transport container using an adhesive or a double-sided tape. However, with such a method, it has been difficult to remove the used plate from the transport container, making it difficult to reuse the transport container. Therefore, in recent years, there has been a demand for a technique for detachably fixing a plate to a transport container.

[0003] Although it is not a technique for fixing a plate to a transport container, for example, Patent Document 1 discloses an invention related to a technique for detachably connecting members having plate-like portions at least partially, under the name of "plate connecting tool and plate connecting system". The plate connecting system according to the invention disclosed in Patent Document 1 includes a first member provided with an engaging portion on the opposing surfaces of a pair of guide plates erected on the inner surface of a base plate having a circular tool insertion hole and having their tips connected via a rod-like body, a second member having a pair of engaging claws erected on the inner surface of a second base plate, and a removal tool having a protruding portion formed of a cylindrical body erected on the inner surface of a third base plate.

[0004] On the other hand, Patent Document 2 discloses an invention related to a support tool for supporting an interior material of a container including a buffer material and a partition plate arranged in a transport container, under the name of "interior unit". And a support tool provided with a connecting member so as to be attached to a profiled rail corresponding to the above-mentioned profile is described. This connecting member is a projection that protrudes from the underside of the base, and its outer shape corresponds to the inner shape of the concave groove of the irregularly shaped rail. The support device is attached to the irregularly shaped rail by inserting the connecting member into the concave groove. [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] Patent No. 7007767 [Patent Document 2] Patent No. 7105000 [Overview of the project] [Problems that the invention aims to solve]

[0006] The plate material connecting system disclosed in Patent Document 1 connects two plate materials together and cannot be used for the purpose of fixing plate materials to the aforementioned profile. Furthermore, when fixing plate materials to a profile using the support device disclosed in Patent Document 2, a gap is created between the profile and the plate material, which may increase manufacturing costs due to reasons such as the need to process the plate material into a complex shape and the need to pre-insert the support device into the concave groove of the profile. In addition, the inventions disclosed in Patent Documents 1 and 2 have the problem that it is not possible to detachably fix plate materials, which are arranged so that their flat surfaces are parallel to the sides of the profile, by sandwiching them together with the profile from both sides.

[0007] The present invention addresses these conventional circumstances and aims to provide a plate fixing device that can detachably fix a plate material, which is positioned so that its flat surface is parallel to the side surface of the profile, by sandwiching it together with the profile from both sides. [Means for solving the problem]

[0008] To achieve the above objective, the first invention provides a plate fixing device for detachably fixing a plate material having a through hole to a profile having a rectangular cross-section and a concave groove provided along the longitudinal direction on at least one side surface, comprising: a fixing device body comprising a bearing portion having a shaft insertion hole and configured to be insertable into the through hole, and a base plate having a bearing portion erected on one side and a shaft insertion hole opening on the other side, and an engaging plate and a gripping portion at both ends of a shaft portion inserted into the shaft insertion hole and rotatably held by the bearing portion The device comprises a knob that forms an H shape, the engaging plate is positioned within a concave groove of the profile, the bearing portion is inserted through a through hole in the plate, the shaft portion is held by the bearing portion and the engaging plate is positioned within the concave groove of the profile, and when the knob that protrudes from the other side of the base plate is operated to rotate the knob, the knob is configured to switch between a state in which the engaging plate engages with the opening edge of the concave groove of the profile and the knob is engaged with the base plate, and a state in which this engagement is released.

[0009] The second invention is characterized in that, in the first invention, a cylindrical protective part is erected on the other side of the base plate such that the knob, which protrudes from the other side of the base plate, is positioned on the inside.

[0010] The third invention is characterized in that, in the first invention, a recess to be engaged is provided at a predetermined depth from the other surface of the base plate on a part of the opening edge of the shaft insertion hole, and an engaging projection is provided on the side surface of the shaft portion at a position that engages with the recess to be engaged when the gripping body rotates by a predetermined angle from a state in which the engagement is released.

[0011] The fourth invention is characterized in that, in any of the first to third inventions, it comprises an auxiliary member having an opening through which a bearing portion is inserted, and installed on one side parallel to the base plate, a locking portion is provided at the tip of the bearing portion, the contour line of the edge of the opening is circular in shape with a diameter such that the bearing portion body placed in the opening can rotate and the locking portion can lock onto the edge, a notch is formed in a part of the edge to release the locked state of the locking portion, and the locking portion is provided to protrude diametrically from the bearing portion body.

[0012] The fifth invention is characterized in that, in the fourth invention, a projection is provided on the surface of the auxiliary member that contacts the profile, and the projection is configured to be positioned together with the bearing portion in the concave groove of the profile when the locking portion of the bearing portion is locked to the edge of the opening of the auxiliary member. [Effects of the Invention]

[0013] In the first invention, when a plate material is in contact with the side surface of an shaped material such that the concave groove and the through hole are aligned, and the engaging plate of a knob, whose shaft is held by a bearing, is connected together with the bearing to the through hole of the plate material and the concave groove of the shaped material, the engaging plate is positioned inside the concave groove of the shaped material. In this state, when the knob protruding from the other side of the base plate is operated to rotate the knob, the engaging plate engages with the opening edge of the concave groove of the shaped material, and the knob engages with the base plate, resulting in the plate material being fixed to the shaped material. Then, when the knob is operated from this state to rotate the knob in the opposite direction, the engaging plate no longer engages with the shaped material, and the knob no longer engages with the base plate, thus releasing the state in which the plate material is fixed to the shaped material. Thus, according to the first invention, a plate material positioned so that its flat surface is parallel to the side surface of an shaped material can be detachably fixed by sandwiching it together with the shaped material from both sides.

[0014] In the second invention, the knob that protrudes from the other side of the base plate is surrounded by a protective part, making it less likely for the operator to unintentionally come into contact with the knob. This prevents the knob from rotating unintentionally when the knob is operated.

[0015] According to the third invention, the gripping body becomes immobile when the engaging projection engages with the engaged recess, thus eliminating the risk of the gripping body unintentionally rotating even if the operator comes into contact with the gripping part.

[0016] In the fourth invention, the bearing body inserted through the opening of the auxiliary member is rotated to engage the locking portion of the bearing with the edge of the opening, thereby fixing the auxiliary member to the fixing body. In this state, with respect to a plate material whose flat surface is in contact with the side surface of the profile material such that the concave groove and the through hole coincide, the engaging plate of the knob, whose shaft portion is held by the bearing portion, is brought into communication with the through hole of the plate material and the concave groove of the profile material together with the bearing portion, so that the engaging plate is positioned inside the concave groove of the profile material. At this time, the auxiliary member positioned between the fixing body and the plate material functions as a spacer, so according to the fourth invention, a plate material thinner than the plate material in any of the first to third inventions can be fixed to the profile material.

[0017] In the fifth invention, when the locking portion of the bearing portion is engaged with the edge of the opening of the auxiliary member, the projection portion, which is positioned in the concave groove of the profile together with the bearing portion, acts to prevent the auxiliary member from shifting position relative to the profile, thus eliminating the risk of the auxiliary member being unintentionally released from its engagement with the fixing device body. Therefore, according to the fifth invention, the work of fixing a plate material to a profile can be performed efficiently using the fourth invention. [Brief explanation of the drawing]

[0018] [Figure 1] (a) and (b) are external perspective views showing the fixing body of the plate fixing device according to the first embodiment of the present invention as viewed from the outer and inner sides, respectively; (c) and (d) are external perspective views and front views of the knob body, which also constitutes the plate fixing device, respectively; and (e) is a longitudinal cross-sectional view of the shaft holding portion. [Figure 2] (a) is an external perspective view of the plate material and profile material, and (b) and (c) are external perspective views showing the auxiliary members used with the plate material fastener shown in Figure 1, viewed from the outer and inner sides, respectively. [Figure 3] (a) to (d) are side views showing how the plate material is fixed to the profile using the plate material fastener shown in Figure 1. [Figure 4](a) and (b) are respectively the view in the direction of arrow A in Fig. 1(b) and the view in the direction of arrow B in Fig. 2(c), and (c) is a view showing the state in which the auxiliary member shown in Fig. (b) is attached to the fixture body shown in Fig. (a) after being rotated 90 degrees. [Figure 5] (a) to (d) are side views showing how a plate material is fixed to a shaped material by the plate material fixture shown in Fig. 1 and the auxiliary member shown in Fig. 2. [Figure 6] (a) is a view showing the state in which the auxiliary member is rotated 90 degrees in Fig. 4(c), (b) is a view showing the state in which the knob body is inserted into the bearing portion in Fig. (a), and (c) is a view showing the state in which the knob body is rotated 90 degrees in Fig. (b). [Figure 7] (a) is an external perspective view of a plate material and a shaped material, and (b) and (c) are external perspective views showing the state of the fixture body constituting the plate material fixture according to the second embodiment of the present invention as seen from the outer surface side and the inner surface side, respectively. [Figure 8] (a) and (b) are side views showing how a plate material is fixed to a shaped material by the plate material fixture shown in Fig. 7 and the knob body shown in Fig. 1.

Embodiments for Carrying Out the Invention

[0019] The plate material fixture according to the embodiment of the present invention will be described with reference to Figs. 1 to 8. In Fig. 1(d), a part of the contour line of the bearing portion is represented by a broken line, and in Fig. 1(e), the state in which the bearing portion is cut by a plane passing through the axis center is represented. Also, in the following description, the surface that abuts against the plate material or the shaped material is expressed as the "inner surface", and the opposite surface is expressed as the "outer surface".

Examples

[0020] As shown in Figures 1(a) to 1(d), the plate fixing device 1a of the present invention is a plastic product used to detachably fix a plate to a profile, and comprises a fixing device body 2 having a bearing portion 4 and a base plate 3 arranged parallel to the flat surface of the plate, and a gripping body 8 in which a portion is inserted so as to be removable into a shaft insertion hole 5 provided in the bearing portion 4 of the base plate 3.

[0021] As shown in Figures 1(a) and 1(b), the base plate 3 is roughly rectangular in shape, and insertion holes 6 for inserting screws or bolts are provided at each of the four corners. In other words, the fixing device body 2 is structured to be fixed to the plate material using screws or bolts. Furthermore, a shaft insertion hole 5 is opened in the center of the base plate 3, and a cylindrical protective part 7 is erected on the base plate 3 perpendicular to the outer surface 3a so as to surround the opening of the shaft insertion hole 5, and a bearing part 4 is provided so as to protrude perpendicularly from the inner surface 3b.

[0022] When the bearing portion 4 is viewed perpendicular to the base plate 3, the bearing portion 4 consists of a rectangular tube with a rectangular outline, and locking portions 4b are provided at its tip 4a, projecting in the direction of the long side of the rectangle (the diametrical direction in the opening 16 of the auxiliary member 14, which will be described later) from the portions corresponding to the two short sides of the rectangle. Thus, the bearing portion 4 can be divided into two parts: the part with the locking portions 4b and the part without the locking portions 4b (hereinafter referred to as the bearing portion body 4c). Furthermore, the shaft insertion hole 5 is a rectangular hole with a rectangular cross-sectional outline, and a pair of retaining parts 5a, 5a are provided at a location corresponding to the center of the long side of the rectangle, with the cross-sectional outlines of the two arcs each forming part of the same circle. Additionally, a recessed part 5b is provided at a predetermined depth from the outer surface 3a of the base plate 3 at a portion of the edge of the opening formed in the outer surface 3a of the base plate 3 of the retaining part 5a. Furthermore, the base plate 3 is provided with a pair of first through holes 3c, 3c and a pair of second through holes 3d, 3d surrounding the bearing portion 4 in the area corresponding to where the insert is placed in the mold during injection molding.

[0023] As shown in Figures 1(c) and 1(d), the gripping body 8 has an engagement plate 9 which is roughly trapezoidal in side view and has recesses 10 for weight reduction on both sides, a cylindrical shaft portion 11 which is erected perpendicularly to the inner surface 9a of the engagement plate 9, and a plate-shaped gripping portion 12 which is roughly rectangular in side view and has the shaft portion 11 perpendicularly positioned in the center of its longitudinal direction, thus forming an H shape. Furthermore, on the side surface 11a of the shaft portion 11, a pair of engaging protrusions 13, 13 are provided near the opposing surface 12a of the gripping portion 12 which faces the inner surface 9a of the engagement plate 9, so as to engage with the recessed portion 5b when the gripping portion 12 is rotated 90 degrees from a state where the longitudinal direction of the bearing portion 4 and the longitudinal direction of the gripping portion 12 are parallel. In other words, the gripping body 8 is configured to become immobile when the pair of engaging protrusions 13, 13 engage with the pair of recessed portion 5b, 5b. Furthermore, the rotation angle of the knob 12 for the engaging projection 13 to engage with the engaged recess 5b is not limited to 90 degrees, but can be changed as appropriate. On the other hand, when the knob 12 moves the shaft 11 away from the outer surface 3a of the base plate 3, the pair of engaging projections 13, 13 are disengaged from the pair of engaged recesses 5b, 5b, and the engagement between the two is released, making the shaft 11 rotatable again.

[0024] In the knob body 8, the shaft portion 11 and the knob portion 12 are structured to be able to be inserted simultaneously into the shaft insertion hole 5 of the bearing portion 4, while the engaging plate 9 is structured to be unable to be inserted into the shaft insertion hole 5 of the bearing portion 4. Furthermore, when the knob portion 12 is positioned outside the bearing portion 4 and only the shaft portion 11 is positioned inside the shaft insertion hole 5, the shaft portion 11 is held on its side surface 11a by a pair of holding portions 5a, 5a so that it can rotate around the shaft.

[0025] As shown in Figure 2(a), the profile 51 has a rectangular cross-section, and each of the four side surfaces 51b has a concave groove 51a along its entire length in the longitudinal direction. The width s1 of the opening of the concave groove 51a (the distance between the inner wall surfaces in a direction perpendicular to the longitudinal direction) is narrower than the width s2 of the interior. Furthermore, the width (length in the short direction) of the engaging plate 9 and the outer diameter of the shaft portion 11 in the gripping body 8 are shorter than the width s1 of the opening of the concave groove 51a of the profile 51. On the other hand, although the length of the engaging plate 9 in the long direction is longer than the width s1 of the opening, it is shorter than the width s2 of the inside of the concave groove 51a of the profile 51. As will be described later, the fixing device body 2 is structured to be fixed to the profile 51 using the concave groove 51a.

[0026] The plate material 52 has a rectangular through-hole 52a in the thickness direction, and as shown in Figure 2(a), it is installed so that the flat surface 52b is parallel to the side surface 51b of the profile material 51. The width (length in the short direction) of the through-hole 52a of the plate material 52 is longer than the width of the engagement plate 9 of the knob body 8, the outer diameter of the shaft portion 11, and the width of the knob portion 12, but shorter than the length in the longitudinal direction of the engagement plate 9. On the other hand, the length in the longitudinal direction of the through-hole 52a is longer than the length in the longitudinal direction of the engagement plate 9.

[0027] As shown in Figures 2(b) and 2(c), the auxiliary member 14 is roughly rectangular in shape, and each of its four corners has an insertion hole 15 for inserting screws or bolts. On the inner surface 14b of the auxiliary member 14, countersunk recesses 15a are provided at locations corresponding to the insertion holes 15 to prevent the heads of screws or bolts from protruding from the surface. In other words, the auxiliary member 14 is structured in such a way that by connecting screws or bolts to the insertion holes 15 and 6, the plate material 52 can be firmly fixed by sandwiching it between the fixing device body 2 and the auxiliary member 14. Furthermore, the auxiliary member 14 has an opening 16 in its center with a roughly circular outline, and each opening has a pair of notches 16a, 16a and a pair of recesses 16b, 16b in two mutually perpendicular diametrical directions. On the inner surface 14b of the auxiliary member 14, a pair of inclined portions 16c, 16c are formed at two locations with the notches 16a in between, and their thickness gradually decreases toward the notches 16a. In addition, the inner surface 14b of the auxiliary member 14 is provided with a pair of protrusions 17, 17.

[0028] Here, the procedure for fixing the plate material 52 to the side surface 51b of the profile material 51 using the plate material fixing device 1a will be explained with reference to Figures 3(a) to 3(d). As already mentioned, the shaft portion 11 and the knob portion 12 of the knob body 8 are structured to be insertable into the shaft insertion hole 5 of the bearing portion 4. Therefore, as shown in Figure 3(a), when the knob body 8, which is positioned below the fixing device body 2, is moved upward, and the knob portion 12 and the shaft portion 11 are inserted sequentially into the shaft insertion hole 5 of the bearing portion 4 from below, the engagement plate 9 ends up being positioned outside the bearing portion 4, as shown in Figure 3(b).

[0029] Next, with the plate material 52 in a state where the flat surface 52b is in contact with the side surface 51b of the profile 51 such that the concave groove 51a and the through hole 52a are aligned, the bearing portion 4 and the engaging plate 9 are connected to the through hole 52a of the plate material 52 and the concave groove 51a of the profile 51, so that the engaging plate 9 is positioned inside the concave groove 51a of the profile 51, as shown in Figure 3(c). In this state, when the knob 12 protruding from the outer surface 3a of the base plate 3 is operated to rotate the knob 8 by 90 degrees, as shown in Figure 3(d), the engaging plate 9 engages with the opening edge 51c of the concave groove 51a of the profile 51 (see Figure 3(c)), and the knob 12 engages with the outer surface 3a of the base plate 3, resulting in the plate material 52 being fixed to the profile 51. Furthermore, if the knob 12 is operated to rotate the knob body 8 by 90 degrees from the state shown in Figure 3(d), the engaging plate 9 will no longer engage with the profile 51 as shown in Figure 3(c), and the knob 12 will no longer engage with the outer surface 3a of the base plate 3, thus resolving the state in which the plate material 52 is fixed to the profile 51.

[0030] Thus, with the plate fixing device 1a, a plate 52 installed so that its flat surface 52b is parallel to the side surface 51b of the profile 51 can be detachably fixed by sandwiching it together with the profile 51 from both sides. In this case, with the plate fixing device 1a, the knob 12 that protrudes toward the outer surface 3a of the base plate 3 is surrounded by the protective part 7, so there is a low possibility that an operator will unintentionally come into contact with the knob 12. Therefore, with the plate fixing device 1a, it is possible to prevent a situation in which the knob body 8 is unintentionally rotated due to misoperation of the knob 12 while the plate 52 is fixed to the profile 51, thereby releasing the fixing state of the plate 52 to the profile 51. Furthermore, as mentioned above, in the plate fixing device 1a, when the pair of engaging projections 13, 13 engage with the pair of engaging recesses 5b, 5b, the gripping body 8 becomes immobile. Therefore, after fixing the plate material 52 to the profile 51, engaging the pair of engaging projections 13, 13 with the pair of engaging recesses 5b, 5b prevents the gripping body 8 from rotating even if the operator accidentally touches the gripping part 12.

[0031] The opening 16 of the auxiliary member 14 will be explained in detail with reference to Figure 4. The opening 16 of the auxiliary member 14 is composed of two types of parts: an arc-shaped portion whose edge contour line forms part of a circle, and a portion provided with a pair of notches 16a, 16a and a pair of recesses 16b, 16b. Of these, the diameter of the circle formed by the arc-shaped portion is longer than the longitudinal length L1 of the bearing body 4c and shorter than the longitudinal length L2 from end to end of the pair of locking parts 4b, 4b (see Figure 4(a) for both). Also, the distance L3 between the inner walls of the pair of notches 16a, 16a (see Figure 4(b)) is longer than the aforementioned length L2. Furthermore, when the auxiliary member 14 is superimposed on the base plate 3 such that the four insertion holes 6 and four insertion holes 15 coincide, the center of the aforementioned circle coincides with the center of the pair of holding parts 5a, 5a. Therefore, when the auxiliary member 14 is placed on the base plate 3 so that the four insertion holes 6 and the four insertion holes 15 align, the bearing body 4c is positioned inside the opening 16 in a rotatable state. At locations other than the pair of notches 16a, 16a, the pair of locking parts 4b, 4b provided on the bearing part 4 engage with the edges of the opening 16 of the auxiliary member 14, making it impossible to separate the auxiliary member 14 from the base plate 3. On the other hand, when the auxiliary member 14 is placed on the base plate 3 so that the pair of locking parts 4b, 4b of the bearing part 4 are positioned at the locations where the pair of notches 16a, 16a are provided, the pair of locking parts 4b, 4b do not engage with the edges of the opening 16 of the auxiliary member 14, making it possible to separate the auxiliary member 14 from the base plate 3.

[0032] The procedure for fixing the plate material 52 to the side surface 51b of the profile 51 using the base plate 3 and auxiliary member 14 will be explained with reference to Figures 5 and 6. Note that the plate material 52 is not shown in Figures 6(a) to 6(c). First, the auxiliary member 14 is positioned so that its outer surface 14a abuts against the flat surface 52b of the plate material 52 and is rotated 90 degrees relative to the base plate 3 (see Figure 4(c)). Then, the plate material 52 is sandwiched from above and below by the fixing device body 2 and the auxiliary member 14, with the bearing portion 4 inserted through the through hole 52a and the opening 16, as shown in Figure 5(a). After that, the auxiliary member 14 is rotated 90 degrees relative to the base plate 3, as shown in Figure 6(a). At this time, the inclined portion 16c provided on the inner surface 14b of the auxiliary member 14 has the function of guiding the engaging plate 9 from inside the notch 16a to the edge of the opening 16 while remaining in contact with the inner surface 9a. As the auxiliary member 14 rotates, the pair of locking portions 4b, 4b provided on the bearing portion 4 lock onto the edge of the opening 16 of the auxiliary member 14, and the auxiliary member 14 is fixed to the fixing device body 2. Next, the knob 8 positioned below the auxiliary member 14 is moved upward, and the knob portion 12 and the shaft portion 11 are inserted sequentially into the shaft insertion hole 5 of the bearing portion 4 from below. As shown in Figures 5(b) and 6(b), only the engaging plate 9 is positioned outside the bearing portion 4.

[0033] Furthermore, after the auxiliary member 14 is brought into contact with the side surface 51b of the profile 51 so that the concave groove 51a and the through hole 52a align, the bearing portion 4 and the engaging plate 9 are inserted into the concave groove 51a of the profile 51, and as shown in Figure 5(c), the engaging plate 9 is positioned inside the concave groove 51a of the profile 51. At this time, a pair of protrusions 17, 17 are positioned inside the concave groove 51a of the profile 51 together with the bearing portion 4. In this case, since the pair of protrusions 17, 17 are locked into the concave groove 51a of the profile 51, there is no risk of the auxiliary member 14 rotating unintentionally and losing its connection with the fixing device body 2. This makes it possible to efficiently fix the plate material 52 to the profile 51. In this state, by operating the knob 12 protruding from the outer surface 3a of the base plate 3 and rotating the knob 8 by 90 degrees as shown in Figure 6(c), the engaging plate 9 engages with the opening edge 51c of the concave groove 51a of the profile 51 (see Figure 5(c)), and the knob 12 engages with the outer surface 3a of the base plate 3, resulting in the plate material 52 being fixed to the profile 51. Furthermore, if the knob 12 is operated to rotate the knob body 8 by 90 degrees from the state shown in Figure 5(d), the engaging plate 9 will no longer engage with the profile 51, as shown in Figure 5(c), and the knob 12 will no longer engage with the base plate 3, thus resolving the state in which the plate material 52 is fixed to the profile 51. Thus, when the auxiliary member 14 is used together with the fixing device body 2 and the knob 8, the auxiliary member 14 positioned between the fixing device body 2 and the profile 51 functions as a spacer, making it possible to fix even thin plate material 52 to the profile 51. [Examples]

[0034] A plate fixing device 1b according to a second embodiment of the present invention will be described with reference to Figures 7 and 8. Note that components already described will be denoted by the same reference numerals, and their descriptions will be omitted as appropriate. As shown in Figure 7(a), the plate material 53 is thicker than the plate material 52, and a circular through-hole 53a is provided in the thickness direction. As shown in Figures 7(b) and 7(c), the plate material fixing device 1b is characterized by having a fixing device body 18 having a base plate 19 instead of the fixing device body 2 having a base plate 3 as in the plate material fixing device 1a. Furthermore, since the gripping body 8 used in the plate material fixing device 1a can be used in the plate material fixing device 1b, the initial investment in molds can be reduced.

[0035] The base plate 19 is roughly rectangular in shape, with through holes 6 for inserting screws or bolts at each of its four corners. A stepped opening 20 is provided in the center of the base plate 19, and a shaft insertion hole 5 is opened at the bottom surface 20a of the opening 20. In other words, a cylindrical stepped portion 21 is erected perpendicularly to the inner surface 19b of the base plate 19. The height to which the stepped portion 21 protrudes from the inner surface 19b of the base plate 19 is approximately equal to the thickness of the plate material 53.

[0036] In a plate fixing device 1b with this structure, after positioning the knob 8 below the fixing device body 18, the knob 8 is moved upward, and the knob portion 12 and the shaft portion 11 are sequentially inserted into the shaft insertion hole 5 of the bearing portion 4 from below. As shown in Figure 8(a), only the engaging plate 9 is positioned outside the bearing portion 4. Next, the flat surface 53b is brought into contact with the side surface 51b of the profile 51 so that the concave groove 51a and the through hole 53a are aligned. Then, the bearing portion 4 and the engaging plate 9 are connected to the through hole 53a of the plate 53 and the concave groove 51a of the profile 51, so that the engaging plate 9 is positioned inside the concave groove 51a of the profile 51. In this state, when the knob 12 protruding from the outer surface 19a of the base plate 19 is operated to rotate the knob 8 by 90 degrees, as shown in Figure 8(b), the engaging plate 9 engages with the opening edge 51c of the concave groove 51a of the profile 51, and the knob 12 engages with the bottom surface 20a of the opening 20 provided in the base plate 19, as a result, the plate material 53 is fixed to the profile 51. Furthermore, if the knob 12 is operated to rotate the knob body 8 by 90 degrees from the state shown in Figure 8(b), the engagement plate 9 will no longer engage with the profile 51, and the knob 12 will no longer engage with the bottom surface 20a of the opening 20 provided in the base plate 19, thereby resolving the state in which the plate material 53 is fixed to the profile 51.

[0037] Furthermore, the plate fixing device 1b can also be used when fixing multiple plates, each having a circular through-hole of the same inner diameter in the thickness direction, to the profile 51. However, in that case, the height at which the stepped portion 21 protrudes from the inner surface 19b of the base plate 19 must be set to be equal to the sum of the thicknesses of the multiple plates. If the height at which the stepped portion 21 protrudes from the inner surface 19b of the base plate 19 is greater than the sum of the thicknesses of the multiple plates, it is advisable to use an auxiliary member 14 with a thickness equal to the difference between the two. [Industrial applicability]

[0038] This invention can be used when a plate material is detachably fixed to an aluminum extruded material. [Explanation of Symbols]

[0039] 1a, 1b…Plate fixing device 2…Fixing device body 3…Base plate 3a…Outer surface 3b…Inner surface 3c…First through hole 3d…Second through hole 4…Bearing part 4a…Tip 4b…Locking part 4c…Bearing part body 5…Shaft insertion hole 5a…Holding part 5b…Engaged recess 6…Insertion hole 7…Protective part 8…Knob 9…Engaging plate 9a…Inner surface 10…Recess 11…Shaft part 11a…Side surface 12…Knob part 12a…Opposite surface 13…Engaging projection 14…Auxiliary member 14a…Outer surface 14b…Inner surface 15…Insertion hole 15a…Countersunk 16…Opening 16a…Notch 16b…Recess 16c…Inclined part 17…Projection 18…Fixing device body 19…Base plate 19a…Outer surface 19b…Inner surface 20…Opening 20a…Bottom surface 21…Stepped section 51…Shaped material 51a…Concave groove 51b…Side surface 51c…Opening edge 52…Plate material 52a…Through hole 52b…Flat surface 53…Plate material 53a…Through hole 53b…Flat surface

Claims

1. A plate fastener for detachably fixing a plate having a through hole to a profile having a rectangular cross-section and a concave groove along the longitudinal direction on at least one side surface, A fixing device body comprising a bearing portion having a shaft insertion hole and configured to be insertable into the through hole, and a base plate on which the bearing portion is erected on one side and the shaft insertion hole is open on the other side, A handle body having an H-shape, with engaging plates and handles provided at both ends of a shaft portion that is inserted into the shaft insertion hole and rotatably held by the bearing portion, The base plate is provided with a cylindrical protective part that protrudes from the other surface of the base plate, such that the knob, which protrudes from the other surface of the base plate, is positioned on the inside, The engagement plate can be positioned within the concave groove of the profile, A plate material fixing device characterized in that, with the bearing portion inserted through the through hole of the plate material, the shaft portion held by the bearing portion and the engaging plate positioned in the concave groove of the profile, the knob portion protruding from the other side of the base plate is operated to rotate the knob body, causing the knob body to switch between a state in which the engaging plate engages with the opening edge of the concave groove of the profile and the knob portion engages with the base plate, and a state in which this engagement is released.

2. A recessed area for engagement is provided at a predetermined depth from the other surface of the base plate on a part of the opening edge of the shaft insertion hole. The plate fixing device according to claim 1, characterized in that an engaging projection is provided on the side surface of the shaft portion at a position that engages with the engaged recess when the gripping body rotates by a predetermined angle from the state in which the engagement is released.

3. The auxiliary member has an opening through which the bearing portion is inserted and is installed parallel to the base plate on one side, A locking portion is provided at the tip of the bearing portion. The plate fixing device according to claim 1 or 2, characterized in that the contour line of the edge of the opening is circular in shape having a diameter such that the bearing body disposed within the opening can rotate and the locking portion can lock onto the edge, a notch is formed in a part of the edge to release the locked state of the locking portion, and the locking portion is provided to protrude from the bearing body in the diametrical direction.

4. A projection is provided on the surface of the auxiliary member that contacts the profile, The plate fixing device according to claim 3, characterized in that the projection is configured to be able to be positioned together with the bearing portion in the concave groove of the profile when the locking portion of the bearing portion is locked to the edge of the opening of the auxiliary member.

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