JP2021001622A - Connecting member and fixing structure using the connecting member - Google Patents

Abstract

To provide a connecting member which allows work such as hinge attachment to be easily performed.SOLUTION: In a connecting member 10 in which an inner cylindrical part 20 and an outer cylindrical part 30 are integrated via screw-connection between screws 23, 35, an inner face of an axial region near a screw insertion end part 21 is formed into a smooth plane 24 in a screw insertion space 28 of the inner cylindrical part, and a female screw part 26 which can be engaged with the screw is formed in an axial region near an end part 22 at an opposite side. Slits 25 are formed in a female screw part forming region, and a clearance 37 is formed between the outer cylindrical part and the slits. Linearly pushing the screw 60 through a hinge 50 into the connecting member which is arranged at a closing-side port end 41 of a door 40, advances the connecting member while expanding a female screw part, and finally causes the connecting member to be engaged with a female screw, thereby, a rigid fixing structure can be obtained. Since it is not necessary to turn the screw by using a tool such as an electric driver as before, even a young beginner and a woman who are not familiar with work can easily perform connection work.SELECTED DRAWING: Figure 5

Description

The present invention relates to a connecting member used for connecting two members, and more specifically, for example, when attaching a hinge to a door and an opening frame (vertical frame) in order to install the door in the opening frame so as to be openable and closable. Regarding connecting members used with screws. The present invention further relates to a fixed structure obtained by using this connecting member.

As is well known, the hinge has a pair of mounting pieces that are rotatably provided with respect to the shaft, one mounting piece is screwed near the end of the door closing side and the other mounting piece is closed. The door can be opened and closed by fixing it to the vertical frame on the side with screws. At this time, the hinge may be attached by simply screwing the screw into the door and the vertical frame through the hinge, but when the door and the vertical frame are mainly formed of wood material such as MDF, they are mainly formed of metal. Due to the difference in material from the hinge, the difference in specific gravity becomes large, and it may not be possible to obtain sufficient fixing strength simply by screwing in the screw. In addition, since screws are screwed into the vertical frame in the thickness direction of the vertical frame via hinges to fix it, it is not possible to use sufficiently long screws, and the fixing strength tends to be insufficient. Become.

In such a case, a through hole that penetrates the vertical frame in the thickness direction is formed, and a nut-shaped connecting member is inserted and attached from the opening on the side opposite to the hinge mounting side of the through hole, and this connecting member is attached. By screwing a screw inserted via a hinge into the female screw of No. 1 to ensure a strong connection (Patent Document 1).

JP-A-2009-155995

However, in order to fix the hinge to the vertical frame using such a connecting member, it is necessary to work with a tool such as a heavy electric screwdriver in order to screw the screw into the female screw of the connecting member. The work is performed at a plurality of places (for example, four places each for fixing to the door and fixing to the vertical frame according to the embodiment shown in FIG. 2 of Patent Document 1) for one hinge, and further, the height of the door / vertical frame is further increased. It had to be repeated at two or more different places in the hinge direction, which required labor and time. In recent years, as the number of carpenter technicians has decreased, the opportunities for young employees and women who are unfamiliar with the work have increased, so that hinge fixing work can be performed without using tools such as electric screwdrivers. It is desired to do.

Therefore, the problem to be solved by the present invention is to provide a connecting member capable of easily performing a two-member connecting work such as attaching a hinge to a door or a vertical frame without using a tool such as an electric screwdriver. It is an object of the present invention to provide a fixing structure in which one member is connected and fixed to another member by using this connecting member.

In order to solve this problem, the invention according to claim 1 of the present application is used to engage a screw for inserting one member with a connecting member arranged on the other member and attach the one member to the other member. Between the first end portion of the connecting member on the side where the screw is inserted in the axial direction, the second end portion on the opposite side of the first end portion, and the first end portion and the second end portion. It is formed in a substantially cylindrical shape with a screw insertion space formed in, and the inner surface of the first axial region near the first end of the screw insertion space has the screw outer diameter including the screw thread. A smooth surface having substantially the same or slightly larger inner diameter is formed, and a screw engaging portion that can be engaged with a screw is formed on the inner surface of a second axial region near the second end of the screw insertion space. The screw engaging portion is elastically deformable, and the protruding tips thereof draw a circle having a diameter smaller than the outer diameter of the screw including the screw thread.

In the invention according to claim 2 of the present application, in the connecting member according to claim 1, an inner cylindrical portion having the screw engaging portion and an outer cylindrical portion provided integrally or connectably to the outside of the inner cylindrical portion. In the second axial region of the inner cylindrical portion, a slit opening at the second end is formed, and in the second axial region, the outer surface of the inner cylindrical portion and the inner surface of the outer cylindrical portion are formed. It is characterized in that a gap is formed between the two.

In the invention according to claim 3 of the present application, in the connecting member according to claim 2, the inner cylindrical portion and the outer cylindrical portion are made of separate members, and the male screw portion and the outer cylindrical portion formed on the inner cylindrical portion are formed. It is characterized in that it is combined and integrated by screwing with a female screw portion.

In the invention according to claim 4 of the present application, in the connecting member according to any one of claims 1 to 3, an enlarged collar portion is formed on the outer surface of the first end portion or the second end portion, and the collar portion is formed. It is characterized in that protrusions are formed along the axial direction on the outer surface of the portion to be removed.

In the invention according to claim 5 of the present application, in the connecting member according to any one of claims 1 to 4, the screw engaging portion is a female screw portion that engages with a screw, or a screw that is directed toward a screw insertion space. It is characterized in that it is at least a pair of projecting pieces provided so as to be inclined in the insertion direction.

The invention according to claim 6 of the present application is a fixed structure obtained by attaching one member to another member by using the connecting member according to any one of claims 1 to 5 together with a screw, and the one member has a screw. A screw mounting hole is formed through which the screw is inserted, and a pilot hole for the screw is formed in the other member at a position aligned with the screw mounting hole, and a pilot hole for the connecting member for accommodating the connecting member is formed. A screw inserted from a screw mounting hole of a member into a pilot hole for a screw is locked to the screw engaging portion of the connecting member.

According to the invention according to claim 1 of the present application, when one member is to be attached to another member, a screw is inserted into the screw insertion space from the first end portion to the second end portion of the connecting member. When attempting to enter the screw engaging portion of the connecting member, the screw engaging portion is elastically deformable, and the protruding tips form a circle with a diameter smaller than the outer diameter of the screw including the screw thread. Since it is formed in this way, the screw thread can be advanced while expanding the screw engaging portion. This work is easy even for young employees and women who are unfamiliar with the work, because it is not necessary to turn the screw with a tool such as an electric screwdriver as in the past, just push the screw straight with a hand or a hammer. Can be connected to.

Moreover, in the state where one member is attached to the other member as described above, since the screw is engaged with the screw engaging portion, even if the screw is to be pulled out, it cannot be pulled out by this engagement. Therefore, a strong fixed structure can be maintained. To disassemble from this state, the screw may be rotated counterclockwise using a tool such as an electric screwdriver as in the conventional case.

According to the invention according to claim 2 of the present application, a slit opening at the second end portion is formed in the second axial region of the inner cylindrical portion, and the inner cylinder is formed in the second axial region. Since a gap is formed between the outer surface of the portion and the inner surface of the outer cylindrical portion, it is easy for the screw engaging portion to expand in diameter due to elastic deformation when the screw passes through the screw engaging portion, and the diameter is smooth. Can perform various screw insertion work.

According to the invention according to claim 3 of the present application, since the inner cylindrical portion and the outer cylindrical portion formed as separate members are connected and integrated by screwing a screw, each cylindrical portion can be formed into a required shape. It is easy and can be a connecting member that is firmly integrated by screwing a screw.

According to the invention according to claim 4 of the present application, when the connecting member is housed in the pilot hole for the connecting member formed in the other member, the collar portion is housed in the enlarged diameter portion formed in the opening of the pilot hole for the connecting member. In this state, the protrusion can be pressed against the inner surface of the tubular portion of the pilot hole for the connecting member, so that positioning is easy and accidental removal can be prevented.

According to the invention according to claim 5 of the present application, at least a pair of projecting pieces provided so as to be inclined in the screw insertion direction toward the screw insertion space are used instead of the female screw as the screw engaging portion. be able to. When at least a pair of projecting pieces are used as the screw engaging part, the screw holding force is slightly lower than that of a female screw, but when the screw is pushed in, the projecting pieces themselves elastically deform to allow the screw to pass through. There is an advantage that less force is required for work.

According to the invention of claim 6 of the present application, a fixing structure obtained by attaching one member to another member by using this connecting member together with a screw is provided, and at the time of attachment, an electric screwdriver or the like is provided as in the conventional case. There is no need to turn the screw with a tool, just push the screw in a straight line, so even young employees and women who are unfamiliar with the work can easily perform the connection work.

It is an enlarged front view which shows the connecting member by one Embodiment (Example 1) of this invention. It is a top view of this connecting member. FIG. 2 is a cross-sectional view taken along the line XX in FIG. It is a perspective view which shows the inner cylindrical part of this connecting member. It is sectional drawing which shows the work procedure at the time of fixing a hinge to a door by using the connecting member of FIGS. 1 to 4 together with a screw. It is a vertical cross-sectional view corresponding to FIG. 3 which shows the connecting member by another embodiment (Example 2) of this invention. It is a vertical cross-sectional view corresponding to FIG. 3 which shows the connecting member by another Embodiment (Example 3) of this invention. It is a vertical cross-sectional view corresponding to FIG. 3 which shows the connecting member by another embodiment (Example 4) of this invention. It is a vertical cross-sectional view corresponding to FIG. 3 which shows the connecting member by another Embodiment (Example 5) of this invention. It is sectional drawing which shows the work procedure at the time of fixing a hinge to a vertical frame using the connecting member of FIG. 9 together with a screw.

The present invention will be described below with reference to examples.

A preferred embodiment (Example) of the present invention will be described in detail below with reference to FIGS. 1 to 5. In this embodiment, the screw pilot holes 42, 42 and the connecting member pilot holes 43, 43 are preliminarily formed at the closing end of the door 40 from the portion matching the screw mounting hole 51 of the hinge 50. Screws (or bolts; the same shall apply hereinafter) from the outside of the door end 41 to the connecting members 10 and 10 which are arranged in the pilot holes 43 and 43 for the connecting member which are opened at the end 41 of the door. ) 60 is engaged to fix the hinge 50 to the door 40 (FIG. 5). Each screw pilot hole 42 has an inner diameter substantially equal to or slightly larger than the shaft diameter of the screw 60, and has a length sufficiently larger than the shaft length of the screw 60. The pilot hole 43 for each connecting member is formed by expanding the portion of the pilot hole 42 for a screw that opens at the end 41 of the door end so as to have a shape and dimensions corresponding to the outer shape of the connecting member 10.

The connecting member 10 used together with the screw 60 to obtain the hinge fixing structure shown in FIG. 5 has the shapes shown in FIGS. 1 to 4 as an example. The connecting member 10 is composed of an inner cylindrical portion 20 and an outer cylindrical portion 30, and has a shaft length sufficiently shorter than the shaft length of the screw 60. Both the inner cylindrical portion 20 and the outer cylindrical portion 30 are made of a material that can tolerate some elastic deformation and retain the shape restoring force that tries to return to the original shape. For example, hard PVC, etc. It can be formed from synthetic resin materials such as acrylic resin, nylon resin, phenol resin, urea resin, melamine resin, polytetrafluoroethylene resin and polypropylene resin, and metal materials such as aluminum and zinc.

A male screw portion 23 is formed on the outer surface of the region of the inner cylindrical portion 20 near the end portion 21 on the side where the screw 60 is inserted, and the inner surface is a smooth surface 24. In a region approximately half in the axial direction near the end 22 on the opposite side of the inner cylindrical portion 20, a plurality of slits 25 extending in the axial direction and opening at the end (three slits at equal intervals in the illustrated embodiment). 25) is formed, and a female screw portion 26 to which the screw 60 can be engaged is formed on the inner surface of the slit 25. The outer surface of the region excluding the slit 25 is a smooth surface 27. Reference numeral 28 is a screw insertion space formed inside the smooth surface 24, and has an inner diameter substantially equal to the outer diameter of the screw including the screw thread of the screw 60. The inner diameter of the female screw groove 26 is substantially the same as the inner diameter of the screw insertion space 28, and therefore the screw thread protrudes inward from the smooth surface 24 of the screw insertion space 28.

The outer cylindrical portion 30 has a flange portion 33 having an enlarged diameter formed at the screw insertion end portion 31, and a plurality of protrusions 34 are formed along the axial direction on the outer surface of the portion excluding the flange portion 33. The protrusion 34 has an engaging surface 34a that is substantially perpendicular to the screw insertion direction on the screw insertion end 31 side, and has an inclined surface 34b whose outer diameter gradually decreases toward the opposite end 32. Therefore, it is formed in a wedge shape with a triangular cross section.

On the inner surface of the outer cylindrical portion 30, a female screw portion 35 that can be screwed with the male screw portion 23 of the inner cylindrical portion 20 is formed in a region substantially half in the axial direction near the screw insertion end portion 31. When the outer cylindrical portion 30 is integrally connected to the outer side of the inner cylindrical portion 20 by screwing the male screw portion 23 and the female screw portion 35, an area approximately half in the axial direction near the end portion 22 of the inner cylindrical portion 20. The inner surface of the approximately half axial region near the end 32 of the outer cylindrical portion 30 is female so that a gap 37 is formed between the outer cylindrical portion 30 and the approximately half axial region near the end 32 of the outer cylindrical portion 30. It is formed as a retracting surface 36 having an inner diameter larger than that of the threaded portion 35.

The connecting member 10 is formed at the closing end of the door 40 in a state where the outer cylindrical portion 30 is integrally connected to the outer side of the inner cylindrical portion 20 by screwing the male screw portion 23 and the female screw portion 35. It is arranged in the prepared hole 43 for each connecting member (FIG. 5). As described above, the pilot hole 43 for the connecting member is formed in a shape and size corresponding to the outer shape of the connecting member 10, and more specifically, the flange portion 33 of the outer cylindrical portion 30 is accommodated in the opening end thereof. A diameter portion 43a is formed, and a cylindrical portion 43b having an inner diameter dimension that elastically engages with the protrusion 34 is formed behind the diameter expansion portion 43a. In order to insert the connecting member 10 into the pilot hole 43 for the connecting member, the protrusion 34 may be compressed by elastic deformation and pushed in until the flange portion 33 is completely contained in the enlarged diameter portion 43a. The connecting member 10 arranged at a predetermined position in the pilot hole 43 for the connecting member in this way is easily detached because the protrusion 34 presses against the tubular portion 43b of the enlarged diameter portion 43 to give resistance to pulling out. Do not maintain a stable mounting condition. The connecting member 10 can be arranged in advance in the factory or on site.

In order to attach the hinge 50 to the door 40 in which the connecting member 10 is arranged in the prepared hole 43 for each connecting member as described above, the screw 60 is inserted from the screw mounting hole 51 of the hinge 50 to the inner cylindrical portion of the connecting member 10. It is pushed into the screw insertion space 28 of 20. When the screw 60 is pushed in even after the tip of the screw 60 passes through the screw insertion space 28 and hits the female screw portion 26, the female screw portion 26 forming region of the inner cylindrical portion 20 is further expanded by the pitch of the screw thread. Moving forward, the tip of the screw 60 passes through the female screw portion 26 and enters the pilot hole 42 for the screw, and finally the head 61 of the screw 60 completely fits in the screw mounting hole 51 of the chord 50. In addition to the elasticity of the material itself such as synthetic resin or metal forming the connecting member 10, a slit 25 is formed in the female threaded portion 26 forming region of the inner cylindrical portion 20, and the diameter of the formed region is expanded. Since the gap 37 is formed so as not to hinder the screw 60, the pushed screw 60 can move forward smoothly while hitting the thread of the female screw portion 26. The work at this time is only to push the screw 60 straight with a hand or a hammer, and it is not necessary to rotate the screw 60, so that an electric screwdriver or the like is not required.

When the hinge 50 is attached to the door 40 by pushing the screw 60 all the way in, the screw thread of the screw 60 enters the screw groove of the female screw portion 26 and is securely engaged, so that it is firmly fixed. The structure is maintained. To release this state, the screw 60 may be rotated counterclockwise and pulled out by using a tool such as an electric screwdriver as in the conventional case.

Another embodiment of the connecting member used to attach the hinge 50 to the door 40 as shown in FIG. 5 is shown in FIG. The connecting member 10 according to this embodiment (Example 2) is different from the connecting member 10 of the first embodiment in that the inner cylindrical portion 20 and the outer cylindrical portion 30 are integrally molded in advance. Therefore, a connecting configuration for integrating the inner cylindrical portion 20 and the outer cylindrical portion 30 (male threaded portion 23 of the inner cylindrical portion 20 and female threaded portion 35 of the outer cylindrical portion 30) is not required in this embodiment.

Since other configurations and operations of the connecting member 10 of the second embodiment are the same as those of the connecting member 10 of the first embodiment, the same reference numerals are given and detailed description thereof will be omitted.

Another embodiment of the connecting member used to attach the hinge 50 to the door 40 as shown in FIG. 5 is shown in FIG. The connecting member 10 according to this embodiment (Example 3) is formed in that the female screw portion 26 forming region of the inner cylindrical portion 20 is formed so as to gradually reduce the diameter toward the end portion 22. It is different from the connecting member 10.

Also in this embodiment, the screw 60 is formed by the elasticity of the material itself such as synthetic resin or metal forming the connecting member 10 and the action of the slit 25 formed on the outside of the female screw portion 26 of the inner cylindrical portion 20. When pushed in, the female screw portion 26 forming region can expand the diameter of the female screw portion 26 forming region within the range of the gap 37, and when the screw 60 is pushed all the way in, it tries to restore to the original shape. Since it engages more tightly with the female thread portion 26, there is an advantage that a strong fixing structure can be obtained.

Other configurations and operations of the connecting member 10 of the third embodiment are the same as those of the connecting member 10 of the first embodiment. Therefore, the same reference numerals are given and detailed description thereof will be omitted.

Another embodiment of the connecting member used to attach the hinge 50 to the door 40 as shown in FIG. 5 is shown in FIG. The connecting member 10 according to this embodiment (Example 4) has a female screw portion 26 on the inner surface of a region (a region in which a slit 25 is formed on the outer surface) substantially half in the axial direction on the end portion 22 side of the inner cylindrical portion 20. Instead, the first embodiment is in that at least a pair of projecting pieces 29, 29 (three pairs at equal intervals in the axial direction in the illustrated embodiment) that are inclined in the screw insertion direction toward the screw insertion space 28 are arranged to face each other. It is different from the connecting member 10 of. The distance between the tips of the projecting pieces 29 and 29 is formed to be slightly smaller than the outer diameter including the screw thread of the screw 60 and larger than the shaft diameter not including the screw thread of the screw 60.

According to this embodiment, when the screw 60 is pushed in and passes between the projecting pieces 29, 29, the screw thread of the screw 60 hits the tips of the projecting pieces 29, 29 at each pitch and moves forward while being expanded by its elasticity. I will do it. When the screw 60 is pushed all the way in, the projecting pieces 29, 29 are restored to their original shape and engage with the screw groove of the screw 60 to maintain a strong fixing structure. According to this embodiment, since the projecting pieces 29 and 29 themselves are elastically deformed to allow the screw 60 to be inserted, the slit 25 and the gap 37 do not necessarily have to be formed and can be omitted.

Since other configurations and operations of the connecting member 10 of the fourth embodiment are the same as those of the connecting member 10 of the first embodiment, the same reference numerals are given and detailed description thereof will be omitted.

Another preferred embodiment of the present invention (Example 5) will be described in detail below with reference to FIGS. 9 and 10. In this embodiment, the inner surface 71 to the outer surface are aligned with the screw mounting holes 51 of the hinge 50 near the end of the door closing side of the vertical frame 70 erected in the opening where the door 40 can be opened and closed. A pilot hole 73 for a screw penetrating the 72 and a pilot hole 74 for a connecting member whose diameter is enlarged so as to have a shape and dimensions corresponding to the outer shape of the connecting member 80 are formed in advance. The hinge 50 is fixed to the building frame 70 by engaging the screw 60 from the inner surface 71 side of the vertical frame through the hinge 50 with the connecting member 80 arranged in the pilot hole 74 for the connecting member. FIG. 10). The pilot hole 73 for a screw is formed to have an inner diameter substantially equal to or slightly larger than the shaft diameter of the screw 60, and the screw 60 is arranged in the pilot hole 45 for a connecting member when inserted from the inner surface 71 side of the vertical frame. It has a sufficient axial length to be engaged with the female threaded portion 96 (described later) of the connecting member 80. In FIG. 10, reference numeral 75 indicates a door stop.

The connecting member 80 used together with the screw 60 to obtain the hinge fixing structure shown in FIG. 10 has the shape shown in FIG. 9 as an example. The connecting member 80 is composed of an inner cylindrical portion 90 and an outer cylindrical portion 100, and has an axial length sufficiently shorter than the axial length of the screw 60. Both the inner cylindrical portion 90 and the outer cylindrical portion 100 are made of a material that can tolerate some elastic deformation and retain the shape restoring force that tries to return to the original shape. For example, hard PVC. It can be formed from synthetic resin materials such as acrylic resin, nylon resin, phenol resin, urea resin, melamine resin, polytetrafluoroethylene resin and polypropylene resin, and metal materials such as aluminum and zinc.

The inner cylindrical portion 90 has the same shape and configuration as the inner cylindrical portion 20 of the first embodiment. That is, in the region of the inner cylindrical portion 90 near the end 91 on the side where the screw 60 is inserted, the male screw portion 93 is formed on the outer surface and the inner surface is a smooth surface 94. A plurality of slits 95 extending in the axial direction and opening to the end portion in a region approximately half in the axial direction near the end portion 92 on the opposite side of the inner cylindrical portion 90 (three slits at equal intervals in the illustrated embodiment). 95) is formed, and a female screw portion 96 to which the screw 60 can be engaged is formed on the inner surface of the slit 95. The outer surface of the region excluding the slit 95 is a smooth surface 97. Reference numeral 98 is a screw insertion space formed inside the smooth surface 94, and has an inner diameter substantially equal to the outer diameter of the screw including the screw thread of the screw 60. The inner diameter of the female screw groove 96 is substantially the same as the inner diameter of the screw insertion space 98, and therefore the screw thread protrudes inward from the smooth surface 94 of the screw insertion space 98.

The outer cylindrical portion 100 has a shape in which the inner surface of the outer cylindrical portion 30 of the first embodiment has the same shape and configuration, and the outer surface thereof is vertically inverted. That is, an enlarged collar portion 103 is formed at the end 102 opposite to the screw insertion end 101 of the outer cylindrical portion 100, and a plurality of protrusions 104 are provided along the axial direction on the outer surface of the portion other than the flange 103. It is formed. The protrusion 104 has an engaging surface 104a on the end 102 side that is substantially perpendicular to the screw insertion direction, and has an inclined surface 104b whose outer diameter gradually decreases toward the screw insertion end 101. , It is formed in the shape of a wedge with a triangular cross section.

On the inner surface of the outer cylindrical portion 100, a female screw portion 105 that can be screwed with the male screw portion 93 of the inner cylindrical portion 90 is formed in a region substantially half in the axial direction near the screw insertion end portion 101. When the outer cylindrical portion 100 is integrally connected to the outer side of the inner cylindrical portion 90 by screwing the male screw portion 93 and the female screw portion 105, a region approximately half in the axial direction near the end portion 92 of the inner cylindrical portion 90. The inner surface of the approximately half axial region close to the end 102 of the outer cylindrical portion 100 is female so that a gap 107 is formed between the outer cylindrical portion 100 and the approximately half region in the axial direction close to the end 102 of the outer cylindrical portion 100. It is formed as a receding surface 106 having an inner diameter larger than that of the threaded portion 105.

In the connecting member 80, the outer cylindrical portion 100 is integrally connected to the outer side of the inner cylindrical portion 90 by screwing the male screw portion 93 and the female screw portion 105, and the connecting member 80 is near the end of the door closing side of the vertical frame 70. It is arranged in a pilot hole 74 for a connecting member formed on the outer surface of the above (FIG. 10). As described above, the pilot hole 74 for the connecting member is formed in a shape and size corresponding to the outer shape of the connecting member 80, and more specifically, the flange portion 103 of the outer cylindrical portion 100 is accommodated in the opening end thereof. A diameter portion 74a is formed, and a cylindrical portion 74b having an inner diameter dimension that elastically engages with the protrusion 104 is formed behind the diameter expansion portion 74a. In order to insert the connecting member 80 into the pilot hole 74 for the connecting member, the protrusion 104 may be compressed by elastic deformation and pushed in until the flange portion 103 is completely contained in the enlarged diameter portion 74a. The connecting member 80, which is arranged at a predetermined position in the prepared hole 74 for the connecting member in this way, is easily detached because the protrusion 104 presses against the tubular portion 74b of the enlarged diameter portion 74 to give resistance to pulling out. Do not maintain a stable mounting condition. The connecting member 10 can be arranged in advance in the factory or on site.

In order to attach the hinge 50 to the vertical frame 70 in which the connecting member 80 is arranged in the prepared hole 74 for the connecting member as described above, the screw 60 is inserted from the inner surface 71 side of the vertical frame 70 into the screw mounting hole 51 of the hinge 50. And, it is sequentially inserted into the screw pilot hole 73, and further pushed into the screw insertion space 98 of the inner cylindrical portion 90 of the connecting member 80. When the screw 60 is pushed in even after the tip of the screw 60 passes through the screw insertion space 98 and hits the female screw portion 96, the female screw portion 96 forming region of the inner cylindrical portion 90 is further expanded by the pitch of the screw thread. Moving forward, the head 61 of the screw 60 finally fits completely into the screw mounting hole 51 of the hinge 50. At this time, the tip of the screw 60 is located within the range of the female screw portion 96. In addition to the elasticity of the material itself such as synthetic resin or metal forming the connecting member 80, a slit 95 is formed in the female threaded portion 96 forming region of the inner cylindrical portion 90, and the diameter of the formed region is expanded. Since the gap 107 is formed so as not to hinder the screw 60, the pushed screw 60 can move forward smoothly while hitting the thread of the female screw portion 96. The work at this time is only to push the screw 60 straight with a hand or a hammer, and it is not necessary to rotate the screw 60, so that an electric screwdriver or the like is not required.

When the hinge 50 is attached to the vertical frame 70 by pushing the screw 60 all the way in, the screw thread of the screw 60 enters the screw groove of the female screw portion 96 and is securely engaged, so that it is strong. The fixed structure is maintained. To release this state, the screw 60 may be rotated counterclockwise and pulled out by using a tool such as an electric screwdriver as in the conventional case.

An embodiment as a connecting member 80 used to obtain the hinge fixing structure of FIG. 10 is shown in FIG. 9, but the connecting member 80 of this embodiment has already been described as Example 2 (FIG. 6). As described above in a modified example in which the inner cylindrical portion 90 and the outer cylindrical portion 100 are integrally formed, and as described in Example 3 (FIG. 7), the female threaded portion 96 forming region of the inner cylindrical portion 90 is set to the end portion 92. A modified example formed so as to gradually reduce the diameter toward the inside, or a projecting piece (29) is provided on the inner surface of the inner cylindrical portion 90 instead of the female screw portion 96 as described in the fourth embodiment (FIG. 8). You may adopt the modified example.

Although the present invention has been described in detail with reference to examples, the present invention is not limited to these, and can be variously modified or modified within the scope of the invention described in the claims. Is. For example, the protrusions 34, 104 formed on the outer surface of the connecting member are replaced with the male threaded portions, and these are formed (or embedded) on the inner surface of the tubular portions 43b, 74b of the pilot holes 43, 74 for the connecting member. ) The connecting members 10 and 80 may be accommodated in the connecting member pilot holes 43 and 74 by screwing them into the female screw portion. Further, as a preferred use of the connecting member of the present invention, an embodiment of attaching a hinge to a door or a vertical frame to obtain a hinge fixing structure has been described in detail, but the connecting member of the present invention is this. Not limited to the application, it can be widely used to attach one member to another member.

10 Connecting member 20 Inner cylindrical part 21 End on the screw insertion side (first end)
22 The end opposite to the screw insertion side (second end)
23 Male screw part 24 Smooth surface 25 Slit 26 Female thread part 27 Smooth surface 28 Screw insertion space 29 Projection piece 30 Outer cylindrical part 31 End on the screw insertion side (first end)
32 The end opposite to the screw insertion side (second end)
33 Flange 34 Protrusion 35 Female screw 36 Retreat surface 37 Gap 40 Door 41 Door closing side Wood end 42 Screw pilot hole 43 Connecting member pilot hole 50 Hinge 51 Screw mounting hole 60 Screw 61 Screw head 70 Vertical frame 71 Vertical frame inner surface 72 Vertical frame outer surface 73 Screw pilot hole 74 Connecting member pilot hole 75 Door stop 80 Connecting member 90 Inner cylindrical part 91 Screw insertion side end (first end)
92 The end opposite to the screw insertion side (second end)
93 Male threaded part 94 Smooth surface 95 Slit 96 Female threaded part 97 Smooth surface 98 Thread insertion space 100 Outer cylindrical part 101 Thread insertion side end (first end)
102 The end opposite to the screw insertion side (second end)
103 Collar 104 Protrusion 105 Female thread 106 Retreat surface 107 Gap

Claims (6)

The connecting member used for engaging a screw for inserting one member with a connecting member arranged in the other member and attaching the one member to the other member, and which is a side on which the screw is inserted in the axial direction. Formed in a substantially cylindrical shape with a first end portion, a second end portion on the opposite side of the first end portion, and a screw insertion space formed between the first end portion and the second end portion. The inner surface of the first axial region near the first end of the screw insertion space is a smooth surface having an inner diameter that is substantially the same as or slightly larger than the outer diameter of the screw including the screw thread, and the screw is inserted. A screw engaging portion that can engage with a screw is formed on the inner surface of a second axial region near the second end of the space, and the screw engaging portion is elastically deformable and protrudes thereof. A connecting member characterized in that the tips draw a circle with a diameter smaller than the outer diameter of the screw including the screw thread. The inner cylindrical portion having the screw engaging portion and the outer cylindrical portion provided integrally or connectably to the outer side of the inner cylindrical portion are provided, and the second axial region of the inner cylindrical portion is the said. The first aspect of the present invention, wherein a slit opening at the second end is formed, and a gap is formed between the outer surface of the inner cylindrical portion and the inner surface of the outer cylindrical portion in the second axial region. Connecting member. The inner cylindrical portion and the outer cylindrical portion are made of separate members, and are coupled and integrated by screwing a male screw portion formed on the inner cylindrical portion and a female screw portion formed on the outer cylindrical portion. The connecting member according to claim 2. Claim 1 is characterized in that an enlarged collar portion is formed on the outer surface of the first end portion or the second end portion, and protrusions are formed along the axial direction on the outer surface of the portion excluding the collar portion. The connecting member according to any one of 3 to 3. The screw engaging portion is a female screw portion that engages with the screw, or at least a pair of projecting pieces provided so as to be inclined in the screw insertion direction toward the screw insertion space. , The connecting member according to any one of claims 1 to 4. A fixed structure obtained by attaching one member to another member by using the connecting member according to any one of claims 1 to 5 together with a screw, and the one member is formed with a screw mounting hole through which a screw is inserted. A pilot hole for a screw is formed in the other member at a position aligned with the screw mounting hole, and a pilot hole for a connecting member for accommodating the connecting member is formed, and a pilot hole for a screw is formed from the screw mounting hole of the one member. A fixing structure characterized in that a screw inserted into the screw is locked to the screw engaging portion of the connecting member.