Member connecting device

Abstract

To provide a connecting device for connecting a first member and a second member each having a predetermined length in a substantially overlapping state.SOLUTION: A device connects a first member and a second member by inserting connection protrusions provided on the first member and the second member into connection holes and locking the protrusions. The connection holes (21) (21) are aligned in both of the first member (M1) and the second member (M2) at an interval in the longitudinal direction. Of the pair of connection holes (21) (21) facing each other between the two members, one connection hole serves as a fitting hole (21a) to which the connection protrusion (22) is fitted and fixed, and the other connection hole serves as a locking hole (21b) into which the connection protrusion (22) is inserted and locked to.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a connecting device for connecting a first member and a second member, each having a predetermined length, in a substantially overlapping state. [Background technology]

[0002] For example, in factories and the like where various types of machinery and equipment are installed, raised floors are constructed as workspaces for workers who operate the machinery and equipment.Furthermore, in offices and the like, raised floors are sometimes constructed on top of existing floors for the purpose of electrical wiring and the like.

[0003] The present applicant has proposed a device for connecting adjacent floor materials laid lengthwise and widthwise on such a floor surface (Patent Document 1).

[0004] Patent Document 1 discloses a first device as shown in FIG. 1 and a second device as shown in FIG.

[0005] As shown in Figure 1, the first device is configured to connect a first member M1 and a second member M2, each made of a strip-shaped metal plate that constitutes the side frames of the first floor member F1 and the second floor member F2, in an almost overlapping state between adjacent first and second floor members F1 and F2, and is configured so that connecting protrusions 2, which are arranged in a row at intervals along the length of the second member M2, are inserted and engaged into connecting holes 1A arranged in a row at intervals along the length of the first member M1.

[0006] As shown in Figure 1 (B), the connecting protrusion 2 has a shaft portion 3 and a head portion 4, and is attached and fixed by clamping the second member M2 with a washer 7 and a nut 8, with a bolt portion 5 extending from the shaft portion 3 inserted into an insertion hole 6 formed through the second member M2.

[0007] On the other hand, the connecting hole 1A has an introduction hole 9 through which the head 4 and shaft 3 of the connecting projection 2 are freely inserted, a retention hole 10 through which the shaft 3 is inserted but which locks the head 4 to prevent it from coming off, and a communication passage 11 that allows the shaft 3 to move from the introduction hole 9 toward the retention hole 10. In this case, the introduction hole 9 and the retention hole 10 are arranged one above the other and generally form an I-shape, so hereinafter for convenience they will be referred to as an I-shaped connecting hole 1A.

[0008] Therefore, in order to insert and lock the connecting projection 2 into the I-shaped connecting hole 1A, as shown by the chain line in Figure 1(D) and as shown in Figures 1(E) and 1(F), the head 4 and shaft 3 of the connecting projection 2 are inserted into the introduction hole 9 of the connecting hole 1 and then moved downward. This positions the shaft 3 of the connecting projection 2 in the retaining hole 10 of the I-shaped connecting hole 1A, and in this state the head 4 of the connecting projection 2 abuts against the outer periphery of the retaining hole 10 from the outside, thereby locking it in a non-removable manner.

[0009] As shown in Figure 2, the second device is similar to the first device described above in that the first member M1 and the second member M2, each made of a strip-shaped metal plate that constitutes the side frames of the first floor material F1 and the second floor material, are placed in a nearly overlapping state, and connecting protrusions 2 arranged in a row at intervals along the length of the second member M2 are inserted and engaged into connecting holes 1B arranged in a row at intervals along the length of the first member M1.

[0010] The connecting protrusion 2, like the first device described above, has a shaft portion 3 and a head portion 4, and is attached and fixed by clamping the second member M2 via a washer 7 and a nut 8 using a bolt portion 5 extending from the shaft portion 3.

[0011] The connecting hole 1B, like the connecting hole 1A in the first device described above, has an introduction hole 9, a holding hole 10, and a communication passage 11, but the configuration of the introduction hole 9 is characterized in that it has a central introduction hole 9a arranged above the holding hole 10, and a left introduction hole 9b and a right introduction hole 9c arranged on the left and right sides of the central introduction hole 9a, which are connected to each other. Therefore, since it generally represents a T-shape, it will be referred to as a T-shaped connecting hole 1B below for convenience.

[0012] Therefore, when inserting and locking the connecting protrusion 2 into the T-shaped connecting hole 1B, it is possible to select the central introduction hole portion 9a, the left introduction hole portion 9b, and the right introduction hole portion 9c as needed, and after inserting the head portion 4 and shaft portion 3 of the connecting protrusion 2 into the introduction hole portion 9 of the T-shaped connecting hole 1B into the selected introduction hole portion, the shaft portion 3 is moved to the retaining hole portion 10, which has the advantage that the head portion 4 abuts against the outer periphery of the retaining hole portion 10 from the outside, thereby locking it in a non-removable manner. [Prior art documents] [Patent documents]

[0013] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-108834 Summary of the Invention [Problem to be solved by the invention]

[0014] In the case of the prior art, floor materials are provided as products with connecting protrusions 2 arranged in a row at intervals in the longitudinal direction of the second member M2. That is, as shown in Figures 1 and 2, floor material products always have connecting protrusions 2 already formed on two opposing side frames or two adjacent side frames of the rectangularly framed side frames, and connecting holes 1 (I-shaped connecting hole 1A and T-shaped connecting hole 1B are collectively referred to as connecting holes 1) formed in the other two side frames.

[0015] Therefore, when laying floor materials on a floor surface, the two floor materials F1 and F2 are placed between adjacent first and second floor materials F1 and F2, with the side frame with connecting hole 1 as the first member M1 and the side frame with connecting protrusion 2 as the second member M2, so that the two members face each other. This makes it possible to insert and lock the connecting protrusion 2 into the connecting hole 1 between the two members, allowing the laid floor materials F1 and F2 to be connected to each other.

[0016] However, when laying the floor materials, the arrangement between adjacent first floor material F1 and second floor material F2 does not necessarily result in a relationship where the first member M1 having the connecting hole 1 as described above and the second member M2 having the connecting protrusion 2 face each other.

[0017] For example, a pair of side frames facing each other between adjacent first floor material F1 and second floor material F2 may both be first members M1 with connecting holes 1, or both may be second members M2 with connecting protrusions 2.

[0018] In such a case, there is a problem that a pair of opposing side frames cannot be connected.

[0019] Furthermore, as mentioned above, in conventional floor materials, the connecting protrusions 2 are already attached to certain side frames, so when a floor is constructed by laying multiple floor materials, the side frames of the floor materials with the connecting protrusions 2 may be positioned at the edge of the floor. In this case, it is undesirable for protrusions to appear at the edge of the floor, so there is a problem in that the connecting protrusions 2 must be removed.

[0020] The present invention is not limited to floor materials, but has an object to provide a member connecting device that solves the above-mentioned problems of the prior art. [Means for solving the problem]

[0021] Therefore, the present invention provides a device for connecting a first member and a second member, each having a predetermined length, in a substantially overlapping state, and is configured so that a connecting protrusion provided on one of the first and second members is inserted and locked into connecting holes arranged in a row at intervals in the longitudinal direction of the other member, the connecting protrusion having a shaft portion and a retaining portion extending outward from the tip of the shaft portion, and the connecting hole has an introduction hole portion into which the retaining portion and the shaft portion of the connecting protrusion are inserted and detached, a holding hole portion into which the shaft portion is inserted but which retains the retaining portion, and a retaining hole portion from the introduction hole portion to the In a configuration in which a communicating passage is formed that allows the shaft portion to move toward the retaining hole portion, the first member and the second member have the connecting holes arranged in a row at intervals in the longitudinal direction in both members, and the connecting protrusion is configured to be removably attached and fixed to an arbitrarily selected one of the connecting holes via an attachment means, and of a pair of connecting holes facing each other between the first member and the second member, one connecting hole is used as an attachment hole to attach and fix the connecting protrusion, and the other connecting hole is used as an engagement hole to insert and engage the connecting protrusion into the engagement hole.

[0022] Preferably, when the side of the mounting hole from which the connecting protrusion protrudes is the outer side and the opposite side is the inner side, the mounting means for the connecting protrusion is composed of a clamping means that fixes the shaft portion by clamping the outer periphery of the retaining hole portion of the mounting hole from the outside and the inside.

[0023] In this case, the mounting means of the connecting protrusion is composed of a bolt means arranged inside the shaft portion, a fixing device through which the bolt means is inserted, and a clamping means including a nut means screwed onto the bolt means, and is configured to clamp and fix the outer periphery of the retaining hole portion from the outside and inside by screwing the nut means onto the bolt means with the fixing device inserted and fixed into the mounting hole.

[0024] It is preferable that the fixing device has a positioning fitting portion that is fitted into the retaining hole portion of the mounting hole, and it is even more preferable that the fixing device has a fixing fitting portion that is fitted into the introduction hole portion of the mounting hole.

[0025] Furthermore, it is preferable that the fixing member has an outer protruding portion that is attached to the outside of the outer periphery of the mounting hole, and an inner protruding portion that is attached to the inside. [Effects of the Invention]

[0026] According to the present invention, when the first member M1 and the second member M2 are substantially overlapped in the desired arrangement, the connecting holes 21, 21 of both members M1, M2 are configured to always face each other. Therefore, by using one of the holes as the mounting hole 21a to mount and fix the connecting protrusion 22 and using the other as the locking hole 21b, the connecting protrusion 22 can be inserted into and locked in the locking hole 21b. [Brief explanation of the drawings]

[0027] [Figure 1] This shows a first device in prior art, where (A) is an oblique view showing the first floor material and the second floor material before they are connected, (B) is a cross-sectional view showing the first member with a connecting hole and the second member with a connecting protrusion, (C) is a front view showing the connecting hole, (D) is a front view showing the relationship between the connecting hole and the connecting protrusion, (E) is an oblique view showing the state before the connecting protrusion is inserted into the connecting hole, (F) is an oblique view showing the state when the connecting protrusion is inserted into the introduction hole, and (G) is an oblique view showing the state when the connecting protrusion is inserted and locked into the retaining hole. [Figure 2] This shows a second device in the prior art, where (A) is an oblique view showing the first floor material and the second floor material before they are connected, (B) is a front view showing the connecting hole, (C) is a front view showing the relationship between the connecting hole and the connecting protrusion, (D) is an oblique view showing the state before the connecting protrusion is inserted into the connecting hole, (E) is an oblique view showing the state after the connecting protrusion has been inserted into the introduction hole, and (F) is an oblique view showing the state after the connecting protrusion has been inserted and locked into the retaining hole. [Figure 3] This shows the first embodiment of the present invention, where (A) is an oblique view showing the first floor material and the second floor material before they are connected, and (B) is an oblique view showing the connecting protrusion attached and fixed to the connecting hole of one member and the connecting hole of the other member. [Figure 4]Regarding the first embodiment, (A) is an oblique view from the outside of the state in which the connecting protrusion and its mounting means are disassembled, (B) is an oblique view from the outside of the state in which the fixing device is fitted into the connecting hole, and (C) is an oblique view from the outside of the state in which the connecting protrusion is mounted and fixed to the connecting hole via the fixing device. [Figure 5] Regarding the first embodiment, (A) is an oblique view from the inside of the state in which the connecting protrusion and its mounting means are disassembled, (B) is an oblique view from the inside of the state in which the fixing device is fitted into the connecting hole, and (C) is an oblique view from the inside of the state in which the connecting protrusion is mounted and fixed to the connecting hole via the fixing device. [Figure 6] This shows a method for attaching and fixing a connecting protrusion to a connecting hole, where (A) is a cross-sectional view showing the state when the fixing device is fitted into the connecting hole, (B) is a cross-sectional view showing the state after fitting, and (C) is a cross-sectional view showing the state when the connecting protrusion is attached and fixed via the fixing device. [Figure 7] 1A and 1B show an application example of the first embodiment, in which (A) is a perspective view showing an assembly staircase, and (B) is a cross-sectional view showing a state in which a first member and a second member are connected. [Figure 8] 10A shows a second embodiment of the present invention, in which (A) is a perspective view of the connecting protrusion and its mounting means in a disassembled state relative to the connecting hole, as seen from the outside, and (B) is a front view showing the relationship between the connecting hole and the fastener. FIG. [Figure 9] 10A shows a third embodiment of the present invention, in which (A) is a perspective view of the relationship between the connecting hole and the fixing device as seen from the outside, (B) is a perspective view of the relationship between the connecting hole and the fixing device as seen from the inside, and (C) is a cross-sectional view showing the state in which the connecting protrusion is attached and fixed to the connecting hole. [Figure 10] 10A and 10B show still other embodiments of the present invention, where (A) is a cross-sectional view showing a fourth embodiment and (B) is a cross-sectional view showing a fifth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0028] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0029] 3, which illustrates an embodiment of the present invention, illustrates a configuration in which a first member M1 and a second member M2, each made of a strip-shaped metal plate that constitutes the side frames of adjacent first and second floor members F1 and F2, are connected in a substantially overlapping state, for ease of understanding by comparison with the prior art described above. However, it should be understood that the connecting device of the present invention is not limited to being used to connect floor members, and can be widely used to connect first and second members, each having a predetermined length, in a substantially overlapping state.

[0030] The present invention is similar to the prior art in that it is configured such that connecting protrusions are inserted and locked into connecting holes. Therefore, connecting protrusions 22 provided on the other of the first and second members (shown as second member M2 in the illustration, and hereinafter referred to as second member M2) are inserted and locked into connecting holes 21 arranged in a row at intervals in the longitudinal direction of one of the first and second members (shown as first member M1 in the illustration, and hereinafter referred to as first member M1), thereby connecting both members M1 and M2.

[0031] However, while the prior art provides a connecting hole 1 in the first member M1 and a connecting protrusion 2 via an insertion hole 6 in the second member M2, the present invention is characterized in that connecting holes 21 are provided in both the first member M1 and the second member M2, and the connecting hole 21 selected as needed is used as the mounting hole 21a, and the connecting protrusion 22 is attached and fixed to the mounting hole 21a in a manner that allows it to be attached and detached freely.

[0032] In other words, between a pair of connecting holes 21, 21 facing the desired position requiring connection, one of the connecting holes 21 is made into an attachment hole 21a, so that the connecting protrusion 22 is attached and fixed to the attachment hole 21a, and the other connecting hole 21 is made into an engagement hole 21b, so that the connecting protrusion 22 is inserted into and engaged with the engagement hole 21b.

[0033] 3(A), the first and second floor materials F1 and F2 have connecting holes 21 in all four sides of the rectangular frame, so that the connecting holes 21 always face each other between the first and second members M1 and M2, which are connected in a nearly overlapping state. While the illustrated example shows multiple connected floor materials of the same size and shape, it goes without saying that floor materials of different sizes and shapes may also be connected.

[0034] As shown in Figure 3(B), when connecting a pair of facing connecting holes 21, 21, one is used as an attachment hole 21a to attach and fix a connecting protrusion 22, and the other is used as an engagement hole 21b, and the connecting protrusion 22 is inserted and engaged into the engagement hole 21b, thereby connecting the first member M1 and the second member M2.

[0035] In this case, the I-shaped connecting hole 1A or T-shaped connecting hole 1B described in the prior art can be used as the connecting hole 21. The connecting hole 21 of the first embodiment shown in Figures 3 to 7 has the same shape as the T-shaped connecting hole 1B, so it is also marked with the symbol 1B. Furthermore, the connecting hole 21 of the second embodiment shown in Figures 8 and 9 has the same shape as the I-shaped connecting hole 1A, so it is also marked with the symbol 1A.

[0036] (First embodiment) In the first embodiment shown in Figures 3 to 7, the connecting hole 21 is a T-shaped connecting hole 1B as in the prior art, and therefore a left introduction hole 9b and a right introduction hole 9c are formed on the left and right sides of the central introduction hole 9a so as to be connected to each other, a retaining hole 10 is formed below the central introduction hole 9a, and a connecting passage 11 is formed which connects the central introduction hole 9a and the retaining hole 10.

[0037] (Configuration of connecting protrusions) In the following description of the configuration of the connecting protrusion 22, with respect to the mounting hole 21a, the side from which the connecting protrusion 22 protrudes will be referred to as the "outside" and the opposite side will be referred to as the "inside." Note that with respect to the locking hole 21b, the side facing the mounting hole 21a will be referred to as the "outside" and the opposite side will be referred to as the "inside."

[0038] The connecting projection 22 includes a shaft portion 23 that protrudes outward from the mounting hole 21a and a retaining portion 24 that extends radially outward from the tip of the shaft portion 23. In the illustrated example, the retaining portion 24 is formed by a thick, flange-shaped head portion provided at the tip of the shaft portion 23. The retaining portion 24 and the shaft portion 23 are formed with an outer diameter and shape such that they can be inserted removably into the central introduction hole 9a and the left and right introduction holes 9b, 9c relative to the locking hole 21b, and when inserted into the left and right introduction holes 9b, 9c, they can move into the central introduction hole 9a while remaining inserted. The shaft portion 23 inserted into the central introduction hole 9a can move into the holding hole 10 via the communicating passage 11, and in this state, the retaining portion 24 is configured to be locked against the inside of the outer periphery of the holding hole 10.

[0039] Further, mounting means 25 is provided from the shaft portion 23 toward the inside for mounting and fixing to the mounting hole 21a.

[0040] 4 and 5, the mounting means 25 is composed of a bolt means consisting of a bolt portion 26 extending inward from the shaft portion 23, a fixture 27 through which the bolt portion 26 is inserted to hold it, a nut means consisting of a nut 28 screwed onto the bolt portion 26, and clamping means 31 including a pair of washers 29, 30. The fixture 27 is configured to be fitted into and held in the mounting hole 21a, and the washers 29, 30 are formed with an outer diameter larger than the holding hole portion 10 of the mounting hole 21a, and have holes through which the bolt portion 26 is inserted.

[0041] In the illustrated embodiment, the shaft portion 23 of the connecting projection 22 has an outer diameter larger than that of the bolt portion 26, thereby forming a large diameter step portion 23a facing the bolt portion 26, and is configured so that a washer 29 inserted onto the bolt portion 26 abuts and engages with the large diameter step portion 23a.

[0042] The fixing device 27 is provided with an insertion hole 27a through which the bolt portion 26 is inserted from the outside to hold the bolt portion 26. As a result, when the bolt portion 26 is inserted into the insertion hole 27a with the washer 29 disposed on the outside of the fixing device 27, the washer 29 is held between the fixing device 27 and the large diameter step portion 23a.

[0043] When the fixing device 27 is fitted into the mounting hole 21a, and the bolt portion 26 of the connecting projection 22 is inserted into the insertion hole 27a via the washer 29 as described above, and then the nut 28 is screwed onto the inserted portion of the bolt portion 26 via the washer 30, a clamping means 31 is formed between the large diameter step portion 23a and the nut 28, with the pair of washers 29, 30 clamping the outer periphery of the mounting hole 21a from the outside and inside.

[0044] With the connecting protrusion 22 attached and fixed to the mounting hole 21a in this manner, the shaft 23 of the connecting protrusion 22 is positioned coaxially with the retaining hole 10 of the locking hole 21b. For example, when the first floor material F1 and the second floor material F2 are laid as shown in Figure 3, with both floor materials installed on the floor surface, the shaft 23 of the connecting protrusion 22 protruding from one connecting hole 21 (mounting hole 21a) needs to be inserted into the retaining hole 10 of the other connecting hole 21 (locking hole 21b).

[0045] For this reason, the fixing device 27 is provided with a positioning fitting portion 32 having an outer shape that fits along the inner peripheral surface of the retaining hole portion 10 of the mounting hole 21a. Therefore, the fixing device 27 fixed to the mounting hole 21a is positioned so that the insertion hole 27a is arranged concentrically with the retaining hole portion 10 of the mounting hole 21a, and as a result, the shaft portion 23 of the connecting projection 22 faces concentrically with the retaining hole portion 10 of the locking hole 21b.

[0046] In a preferred embodiment, the fixing device 27 is provided with a fixing fitting portion 33 having an outer shape that fits along the inner circumferential surface of the central introduction hole portion 9a of the mounting hole 21a. As a result, the fixing device 27 fitted into the mounting hole 21a is fixed so that it does not move freely up and down or left and right, and also does not move freely in the axial direction of the bolt portion 26, because the positioning fitting portion 32 fits into the retaining hole portion 10 and the fixing fitting portion 33 fits into the central introduction hole portion 9a.

[0047] More preferably, the fixing member 27 has an outer protruding portion 34 attached to the outside of the outer periphery of the mounting hole 21a, and an inner protruding portion 35 attached to the inside.

[0048] The outer protruding portion 34 extends from the positioning fitting portion 32 and is formed so as to cover the outer periphery of the lower side of the holding hole portion 10 from the outside.

[0049] The inward protruding portion 35 is extended from the fixed fitting portion 33 and is formed so as to cover the outer periphery of the upper side of the central introduction hole portion 9a from the inside.

[0050] (How to attach the connecting protrusion) An example of a method for attaching and fixing the connecting protrusion 22 to the attachment hole 21a will be described with reference to Fig. 6. First, as shown in Figs. 6(A) and (B), the fixture 27 is fitted into the attachment hole 21a. The fixture 27 has a wide inward protrusion 35 at its upper part, so it is inserted in a forward tilted position toward the inside of the attachment hole 21a, as shown in Fig. 6(A). At this time, the wide inward protrusion 35 is inserted through the central introduction hole 9a and the left and right introduction holes 9b, 9c.

[0051] 6(B), when fixture 27 is raised to a vertical position, positioning fitting portion 32 is fitted into retaining hole 10, and fixing fitting portion 33 is fitted into central introduction hole 9a. At the same time, outer protrusion 34 abuts against the outer periphery of retaining hole 10 from the outside, and inner protrusion 35 abuts against the outer periphery of central introduction hole 9a from the inside. As a result, fixture 27 is fixed in a state where it is fitted into mounting hole 21a.

[0052] Next, as shown in Figure 6(C), the bolt portion 26 of the connecting protrusion 22 is inserted from the outside of the fixing device 27 through the insertion hole 27a of the fixing device 27 via the washer 29, and the nut 28 is screwed onto the inserted end of the bolt portion 26 via the washer 30. Between the large diameter step portion 23a of the shaft portion 23 and the nut 28, the washers 29 and 30 clamp the outer periphery of the mounting hole 21a, including the fixing device 27, and thereby the connecting protrusion 22 is attached and fixed.

[0053] (Example of application of coupling device) As mentioned above, the connecting device of the present invention is not limited to connecting floor materials F1 and F2 as shown in Figure 3, but can be widely used to connect a first member M1 and a second member M2. Figure 7 shows an example in which the device is applied to an assembly staircase used as a work platform.

[0054] In the assembly steps shown in Figure 7(A), the parts indicated by the symbols K1 and K2 are formed by connecting a first member M1 and a second member M2, which are plate-shaped members made of molding material with a cross-sectional shape as shown in Figure 7(B), in a nearly overlapping state.

[0055] The first member M1 and the second member M2 each have a row of connecting holes 21, which are T-shaped connecting holes 1B, spaced apart in the longitudinal direction. Of the pair of facing connecting holes 21, 21, one connecting hole 21 serves as an attachment hole 21a to attach and fix a connecting protrusion 22, and the other connecting hole 21 serves as an engagement hole 21b to insert and engage the connecting protrusion 22, thereby connecting the first member M1 and the second member M2.

[0056] (Second embodiment) In the above-described embodiment, the connecting hole 21 is shaped as a T-shaped connecting hole 1B, but the connecting device of the present invention may also be configured such that the connecting hole 21 is shaped as an I-shaped connecting hole 1A, as in the second embodiment shown in Fig. 8. In this case, the connecting hole 21 (I-shaped connecting hole 1A) has an introduction hole portion 9 and a holding hole portion 10 formed above and below, and a communication passage 11 that connects them is provided.

[0057] In the second embodiment, the shape of the inner protrusion 35 extending from the fixed fitting portion 33 of the fixing device 27 is formed to be narrower than the inner protrusion 35 of the first embodiment, thereby enabling it to be inserted into the introduction hole portion 9 of the mounting hole 21a.

[0058] The other configurations are the same as those of the first embodiment described above.

[0059] (Third embodiment) Figure 9 shows a third embodiment, in which the connecting hole 21 is formed as an I-shaped connecting hole 1A, and the fixing device 27 does not have the inward protrusion 35 in the first embodiment or the inward protrusion 35 in the second embodiment.

[0060] As shown in the drawings, even in the third embodiment, the fixture 27 can be fixed in a fitted state in the connecting hole 21, and the connecting protrusion 22 can be attached and fixed in place in a suitable manner.

[0061] The other configurations are the same as those of the second embodiment described above.

[0062] (Fourth embodiment) Figure 10(A) shows the fourth embodiment, in which the clamping means 31 constituting the mounting means 25 is composed of a bolt means consisting of a headed bolt 26a inserted into the insertion hole 27a of the fixing device 27 from the inside of the first member M1, and a nut means consisting of a female screw 28a formed on the shaft portion 23 of the connecting projection 22 for screwing in the bolt fitting 26a.

[0063] In the fourth embodiment, with washers 29 and 30 placed on the outside and inside of the insertion hole 27a of the fixing device 27, the headed bolt 26a is screwed into the female thread 28a, whereby the fixing device 27 and the outer periphery of the retaining hole portion 10 are clamped together via the washers 29 and 30, and the connecting protrusion 22 is attached and fixed.

[0064] (Fifth embodiment) 10(B) shows a fifth embodiment, which has clamping means 31 similar to that of the fourth embodiment, but does not have a fixing device 27. In this way, even without providing a fixing device 27, by threading a headed bolt 26a into the female thread 28a, it is possible to clamp the outer periphery of the holding hole portion 10 via washers 29 and 30, and the connecting protrusion 22 can be attached and fixed. [Explanation of symbols]

[0065] (Prior Art) F1 First Floor Material F2 Second Floor Material M1 First member M2 2nd member 1 Connection hole 1A I type connection hole 1B T-type connection hole 2 connecting protrusions 3 Shaft 4 head 5 Bolt section 6 Insertion hole 7 Washers 8 nuts 9 Introduction hole 9a Center introduction hole 9b Left introduction hole 9c Right introduction hole 10 Holding hole 11 Communication path (The present invention) 21 Connection hole 21a Mounting hole 21b Locking hole 22 Connecting protrusion 23 Shaft 23a Large diameter step 24 Stopper 25 Mounting means 26 Bolt section (bolt means) 26a Headed bolt (bolt means) 27 Fixtures 27a Insertion hole 28 Nut (nut means) 28a Female thread (nut means) 29, 30 Washers 31. Using coercive means 32. Position Decision Chimera Section 33 Fixed fitting part 34 Outer flare 35 Inner flare

Claims

1. The device connects a first member and a second member, each having a predetermined length, in a substantially overlapping state, and is configured so that connecting protrusions provided on one of the first and second members are inserted into and engaged with connecting holes arranged in a row at intervals in the longitudinal direction of the other member, The connecting projection includes a shaft portion and a retaining portion that protrudes from the tip of the shaft portion toward the outer periphery, The connecting hole is configured to have an introduction hole portion (9) into which the retaining portion and the shaft portion of the connecting projection are inserted so as to be freely insertable and detachable, a holding hole portion (10) into which the shaft portion is inserted and which locks the retaining portion to prevent it from being removed, and a communication passage (11) through which the shaft portion can move from the introduction hole portion (9) toward the holding hole portion (10), The first member (M1) and the second member (M2) have the connecting holes (21) arranged in a row at intervals in the longitudinal direction in both members, The connecting projection (22) is configured to be detachably attached and fixed to any selected connecting hole (21) from among the connecting holes via an attachment means (25), A member connecting device characterized in that, of a pair of connecting holes (21) (21) facing each other between a first member (M1) and a second member (M2), one connecting hole is used as an attachment hole (21a) to attach and fix the connecting protrusion (22), and the other connecting hole is used as an engagement hole (21b) to insert and engage the connecting protrusion (22).

2. When the side of the mounting hole (21a) from which the connecting projection (22) protrudes is defined as the outside, and the opposite side is defined as the inside, 2. The member connecting device according to claim 1, wherein the mounting means (25) of the connecting projection (22) is composed of clamping means (31) that fixes the shaft portion (23) by clamping the outer periphery of the retaining hole portion (10) of the mounting hole (21 a) from the outside and the inside.

3. When the side of the mounting hole (21a) from which the connecting projection (22) protrudes is defined as the outside, and the opposite side is defined as the inside, The attachment means (25) of the connecting projection (22) is composed of bolt means (26), (26a) arranged inside the shaft portion (23), a fixture (27) through which the bolt means is inserted, and clamping means (31) including nut means (28), (28a) screwed onto the bolt means, 3. The member connecting device according to claim 2, wherein the fixing device (27) is fitted and fixed in the mounting hole (21 a), and nut means (28) (28 a) are screwed onto the bolt means (26) (26 a), thereby clamping and fixing the outer periphery of the retaining hole portion (10) from the outside and the inside.

4. 4. The member connecting device according to claim 3, characterized in that the fixing device (27) is provided with a positioning fitting portion (32) that is fitted into the retaining hole portion (10) of the mounting hole (21a) to position the shaft portion (23) of the connecting projection (22) so that it faces the retaining hole portion (10).

5. 4. The member connecting device according to claim 3, wherein the fixing device (27) comprises a fixing fitting portion (33) that is fitted into the introduction hole portion (9) of the mounting hole (21a).

6. 6. A member connecting device according to claim 4 or 5, characterized in that the fixing device (27) comprises an outer protrusion (34) attached to the outside of the outer periphery of the mounting hole (21a) and an inner protrusion (35) attached to the inside.

Images