JP4366301B2 - Attachment body and screw fixing member - Google Patents

Description

  The present invention relates to an attachment body to which an object to be attached such as a wiring device is attached using a screw, and a screw fixing member provided on the attachment body for fixing the screw.

  Conventionally, in order to fix a wiring device as an attachment from the front side of a building wall, a mounting screw is inserted into a device frame to which the wiring device is attached and concealed or buried in the wall. The nuts accommodated in the pair of bosses of the wiring box as the attachment body, or the nuts accommodated in the pair of boss portions of the box cover as the attachment body attached to the box, Was screwed in.

  However, the screwing operation with the screw has to be tightened by rotating the screw with a screwdriver, which is very troublesome and time consuming.

  Therefore, a wiring box (switch box) using a plate-like screw fixing member instead of the nut has been devised (for example, see Patent Document 1). A screw insertion hole is opened in the screw fixing member, and a large number of cut and raised claws are formed by radially cutting the periphery of the screw insertion hole. Then, by pushing the screw into the screw insertion hole without rotating with a screwdriver, the screw pile engages with the tip of the cut and raised claw, and thus the wiring device can be fixed to the wiring box. It was.

Japanese Utility Model Publication No. 52-64393

  By the way, in the conventional wiring box as an attachment, the cut-and-raised claw of the screw fixing member has a plate shape, so that it cannot be sufficiently fitted to the screw screw portion. That is, the cut-and-raised claw is deformed by being pushed down by a screw, but because it is plate-shaped, it cannot be deformed in a spiral shape so as to match the spiral of the screw screw portion. The resultant force was insufficient.

  The present invention has been made to solve the above-described conventional drawbacks, and the object of the present invention is to secure a sufficient engagement force with a screw to securely attach an object to be attached. An object of the present invention is to provide an attachment body and a screw fixing member.

In order to achieve the above object, the attachment body and screw fixing member according to the present invention have the following configuration. That is,
The attachment body according to the first aspect of the present invention is an attachment body in which an object to be attached such as a wiring device is attached using a screw, and forms an internal space having an open portion in at least one side. As described above, a peripheral wall surrounding the internal space and a boss portion located on the inner surface side of the peripheral wall are provided. Here, the boss part has an insertion hole into which the screw is inserted from the open part side. And the inclined surface which leaves | separates from the axial center of the insertion hole is provided in the peripheral surface of the said insertion hole toward the back | inner side of the insertion hole. A screw fixing member for fixing the screw inserted into the insertion hole is accommodated in the boss portion. This screw fixing member includes an elastically deformable wire. The wire has an engaging portion that engages with a screw shaft portion of the screw inserted into the insertion hole. Here, the engaging portion is disposed in the boss portion so as to be positioned behind the front end of the inclined surface provided in the insertion hole with a space therebetween. Further, the engaging portion is provided with a space on its outer side that allows the engaging portion to expand and deform in the radial direction of the insertion hole, and does not rotate around the axis of the insertion hole. Thus, it is held in the boss part. Therefore, for the insertion of the screw shaft portion into the insertion hole, the engagement portion is pushed by the screw protrusions of the screw shaft portion to the outside in the radial direction of the insertion hole. By expanding and deforming, the screw shaft portion is allowed to move in the insertion direction, and by the return force due to the elasticity of the wire itself , the screw shaft portion is contracted to fit into the screw recess of the screw shaft portion. For engagement of the screw shaft portion with respect to the screw shaft portion coming out of the insertion hole, the engagement portion engaged with the screw shaft portion tries to move in the direction of removal of the screw shaft portion. By being pushed by the inclined surface, the screw shaft portion is pressed to prevent the screw shaft portion from moving in the removal direction.

Thereby, in order to attach an object to be attached such as a wiring tool to the attachment body, a screw is pushed into the insertion hole provided in the boss portion of the attachment body from the open portion side. By doing so, the engaging portion of the wire in the screw fixing member is pressed against the screw shaft portion. At the same time, the engaging portion is pushed by the screw protrusions of the screw shaft portion and expands outward in the radial direction of the insertion hole, and the screw shaft portion is allowed to move in the insertion direction. is, the screw shaft portion is inserted into the insertion hole. When the screw has been pushed in, the engaging portion of the wire is contracted so as to be fitted into the screw recess of the screw shaft by the restoring force due to the elasticity of the wire itself , thus engaging with the screw shaft. The screws are fixed, and the adherend is attached to the attachment body. Here, with respect to the screw shaft portion coming out of the insertion hole, the engaging portion engaged with the screw shaft portion is attached to the screw shaft portion and moves in the direction in which the screw shaft portion is moved. By being pushed by the provided inclined surface, the engaging portion presses the screw shaft portion. And this omission prevents the screw from coming off. Here, since the engaging portion is formed of a wire rod, it can be easily tilted in the direction of the spiral of the screw recess of the screw shaft portion and can be securely fitted into the screw recess. Thus, the engagement force between the engagement portion and the screw shaft portion is sufficiently ensured.

Moreover, the attachment body which concerns on invention of Claim 2 is the attachment body of Claim 1, Comprising: The said engaging part pinches | interposes the said screw shaft part inserted in the said insertion hole from both sides. A pair of engagement portions are formed in an arc shape along the outer periphery of the screw shaft portion inserted into the insertion hole. The wire has an extending portion that extends from one end of the pair of engaging portions located on one end side in a direction away from the engaging portions, and the extending portions extend. The connected sides are connected. In addition, since the extending portion is supported in the boss portion, the engaging portion is held so as not to rotate around the axis of the insertion hole. Thus, the engaging portion is formed in an arc shape so as to follow the outer periphery of the screw shaft portion, so that the entire engaging portion formed in the arc shape fits into the screw recess of the screw shaft portion. Thus, the engagement force of the engagement portion with the screw shaft portion is more sufficiently secured. Further, since the extending portion of the wire is supported in the boss portion, the engaging portion does not rotate around the axis of the insertion hole. Therefore, the screw engaged with the engaging portion is not loosened by the turning of the engaging portion.

The attachment according to the invention described in claim 3 is an attachment in which an object to be attached such as a wiring device is attached using a screw, and has an internal space having an open portion in at least one of the attachments. A peripheral wall that surrounds the internal space so as to be formed, and a boss portion that is positioned on the inner surface side of the peripheral wall. Here, the boss part has an insertion hole into which the screw is inserted from the open part side. And the inclined surface which leaves | separates from the axial center of the insertion hole is provided in the peripheral surface of the said insertion hole toward the back | inner side of the insertion hole. A screw fixing member for fixing the screw inserted into the insertion hole is accommodated in the boss portion. This screw fixing member includes an elastically deformable wire. The wire has an engaging portion that engages with a screw shaft portion of the screw inserted into the insertion hole. Here, the engagement portion is provided in a pair so as to sandwich the screw shaft portion inserted into the insertion hole from both sides , and the pair of engagement portions is the screw shaft inserted in the insertion hole. along the outer parts so that is formed in an arc shape. The wire has an extending portion that extends from one end of the pair of engaging portions located on one end side in a direction away from the engaging portions, and the extending portions extend. The extended side is connected , and the extension portion is located on the opposite side to the inner space side with respect to the insertion hole. In addition, since the extending portion is supported in the boss portion, the engaging portion is held so as not to rotate around the axis of the insertion hole. Therefore, for the insertion of the screw shaft portion into the insertion hole, the engagement portion is pushed outwardly by the screw protrusion of the screw shaft portion and deformed outward, whereby the screw shaft portion is inserted. The screw shaft portion engages with the screw shaft portion so as to be fitted in the screw recess of the screw shaft portion by the return force due to the elasticity of the wire rod, and allows the screw shaft portion to be inserted from the insertion hole. When the screw shaft part is pushed, the engaging part engaged with the screw shaft part is pushed by the inclined surface so as to move in the pulling direction of the screw shaft part, thereby pressing the screw shaft part. The movement of the screw shaft portion in the removal direction is prevented.
Thereby, in order to attach an object to be attached such as a wiring tool to the attachment body, a screw is pushed into the insertion hole provided in the boss portion of the attachment body from the open portion side. By doing so, the engaging portion of the wire in the screw fixing member is pressed against the screw shaft portion. At the same time, the engaging part is pushed outward by the screw projection of the screw shaft part and deformed outward, and the screw shaft part is allowed to move in the insertion direction. Inserted into the hole. When the screw has been pushed in, the engaging portion of the wire engages with the screw shaft so as to fit into the screw recess of the screw shaft by the restoring force due to the elasticity of the wire, and thus the screw is fixed. The adherend is attached to the attachment body. Here, with respect to the screw shaft portion coming out of the insertion hole, the engaging portion engaged with the screw shaft portion is attached to the screw shaft portion and moves in the direction in which the screw shaft portion is moved. By being pushed by the provided inclined surface, the engaging portion presses the screw shaft portion. And this omission prevents the screw from coming off. Here, since the engaging portion is formed of a wire rod, it can be easily tilted in the direction of the spiral of the screw recess of the screw shaft portion and can be securely fitted into the screw recess. Thus, the engagement force between the engagement portion and the screw shaft portion is sufficiently ensured. Further, since the engaging portion is formed in an arc shape along the outer periphery of the screw shaft portion, the entire engaging portion formed in the arc shape may be fitted into the screw recess of the screw shaft portion. Thus, the engagement force of the engagement portion with the screw shaft portion is further sufficiently ensured. In addition , since the extending portion of the wire is supported in the boss portion, the engaging portion does not turn around the axis of the insertion hole. Therefore, the screw engaged with the engaging portion is not loosened by the turning of the engaging portion.

Moreover, the attachment body which concerns on invention of Claim 4 is the attachment body of Claim 2 or 3 , WHEREIN: The said extension part is a pair of opposing piece extended from the said engagement part, It consists of the connecting piece which connects these opposing pieces on the extended front end side. Further, the boss portion is formed with a communication hole that communicates from the outer surface of the peripheral wall to the insertion hole, and the communication hole is such that the peripheral wall side sandwiches the connecting piece side of the extended portion in the left and right and front and rear directions. And it is open so that the said engaging part side of the said extension part may be pinched | interposed in right and left, and space may be formed in the front and back. And the said screw fixing member is inserted in the said insertion hole side by passing through the said communicating hole.

The attachment according to the invention described in claim 5 is an attachment in which an object to be attached such as a wiring device is attached using a screw, and has an internal space having an open portion in at least one of the attachments. A peripheral wall that surrounds the internal space so as to be formed, and a boss portion that is positioned on the inner surface side of the peripheral wall. Here, the boss part has an insertion hole into which the screw is inserted from the open part side. And the inclined surface which leaves | separates from the axial center of the insertion hole is provided in the peripheral surface of the said insertion hole toward the back | inner side of the insertion hole. A screw fixing member for fixing the screw inserted into the insertion hole is accommodated in the boss portion. The screw fixing member includes an elastically deformable wire and a support member that supports the wire. And the said wire is inserted in the said boss | hub part in the state supported by the said supporting member. The wire is separated from the engagement portion from an engagement portion formed in a substantially ring shape that engages with the screw shaft portion of the screw inserted into the insertion hole, and one end of the engagement portion. and a extended portion that extends in the direction. And the said extending part is supported in the said boss | hub part, and the said engaging part is hold | maintained so that it may not rotate around the axial center of the said insertion hole. Therefore, for the insertion of the screw shaft portion into the insertion hole, the engagement portion is pushed outwardly by the screw protrusion of the screw shaft portion and deformed outward, whereby the screw shaft portion is inserted. The screw shaft portion engages with the screw shaft portion so as to be fitted in the screw recess of the screw shaft portion by the return force due to the elasticity of the wire rod, and allows the screw shaft portion to be inserted from the insertion hole. When the screw shaft part is pushed, the engaging part engaged with the screw shaft part is pushed by the inclined surface so as to move in the pulling direction of the screw shaft part, thereby pressing the screw shaft part. The movement of the screw shaft portion in the removal direction is prevented.
Thereby, in order to attach an object to be attached such as a wiring tool to the attachment body, a screw is pushed into the insertion hole provided in the boss portion of the attachment body from the open portion side. By doing so, the engaging portion of the wire in the screw fixing member is pressed against the screw shaft portion. At the same time, the engaging part is pushed outward by the screw projection of the screw shaft part and deformed outward, and the screw shaft part is allowed to move in the insertion direction. Inserted into the hole. When the screw has been pushed in, the engaging portion of the wire engages with the screw shaft so as to fit into the screw recess of the screw shaft by the restoring force due to the elasticity of the wire, and thus the screw is fixed. The adherend is attached to the attachment body. Here, with respect to the screw shaft portion coming out of the insertion hole, the engaging portion engaged with the screw shaft portion is attached to the screw shaft portion and moves in the direction in which the screw shaft portion is moved. By being pushed by the provided inclined surface, the engaging portion presses the screw shaft portion. And this omission prevents the screw from coming off. Here, since the engaging portion is formed of a wire rod, it can be easily tilted in the direction of the spiral of the screw recess of the screw shaft portion and can be securely fitted into the screw recess. Thus, the engagement force between the engagement portion and the screw shaft portion is sufficiently ensured. Further, since the engaging portion is formed in a substantially ring shape, it can be fitted over the entire circumference of the screw recess of the screw shaft portion. The engagement force is more sufficiently secured. In addition, since the extending portion of the wire is supported in the boss portion, the engaging portion does not turn around the axis of the insertion hole. Therefore, the screw engaged with the engaging portion is not loosened by the turning of the engaging portion. In addition, since the wire is inserted into the boss portion together with the support member that supports the wire, insertion of the wire into the boss portion is facilitated.

Further, the attachment body according to the invention of claim 6 is an attachment body to which an object to be attached such as a wiring device is attached using a screw, and has an internal space having an open portion in at least one side. A peripheral wall that surrounds the internal space so as to be formed, and a boss portion that is positioned on the inner surface side of the peripheral wall. Here, the boss part has an insertion hole into which the screw is inserted from the open part side. And the inclined surface which leaves | separates from the axial center of the insertion hole is provided in the peripheral surface of the said insertion hole toward the back | inner side of the insertion hole. A screw fixing member for fixing the screw inserted into the insertion hole is accommodated in the boss portion. This screw fixing member includes an elastically deformable wire. The wire has an engagement portion formed in a substantially ring shape that engages with the screw shaft portion of the screw inserted into the insertion hole, and a gap is provided between both ends of the engagement portion. It is formed as follows. In addition, a protrusion that fits into the gap is provided in the boss portion, and the engagement portion is held by the protrusion so as not to rotate around the axis of the insertion hole. Therefore, for the insertion of the screw shaft portion into the insertion hole, the engagement portion is pushed outwardly by the screw protrusion of the screw shaft portion and deformed outward, whereby the screw shaft portion is inserted. The screw shaft portion engages with the screw shaft portion so as to be fitted in the screw recess of the screw shaft portion by the return force due to the elasticity of the wire rod, and allows the screw shaft portion to be inserted from the insertion hole. When the screw shaft part is pushed, the engaging part engaged with the screw shaft part is pushed by the inclined surface so as to move in the pulling direction of the screw shaft part, thereby pressing the screw shaft part. The movement of the screw shaft portion in the removal direction is prevented.
Thereby, in order to attach an object to be attached such as a wiring tool to the attachment body, a screw is pushed into the insertion hole provided in the boss portion of the attachment body from the open portion side. By doing so, the engaging portion of the wire in the screw fixing member is pressed against the screw shaft portion. At the same time, the engaging part is pushed outward by the screw projection of the screw shaft part and deformed outward, and the screw shaft part is allowed to move in the insertion direction. Inserted into the hole. When the screw has been pushed in, the engaging portion of the wire engages with the screw shaft so as to fit into the screw recess of the screw shaft by the restoring force due to the elasticity of the wire, and thus the screw is fixed. The adherend is attached to the attachment body. Here, with respect to the screw shaft portion coming out of the insertion hole, the engaging portion engaged with the screw shaft portion is attached to the screw shaft portion and moves in the direction in which the screw shaft portion is moved. By being pushed by the provided inclined surface, the engaging portion presses the screw shaft portion. And this omission prevents the screw from coming off. Here, since the engaging portion is formed of a wire rod, it can be easily tilted in the direction of the spiral of the screw recess of the screw shaft portion and can be securely fitted into the screw recess. Thus, the engagement force between the engagement portion and the screw shaft portion is sufficiently ensured. Further, since the engaging portion is formed in a substantially ring shape, it can be fitted over the entire circumference of the screw recess of the screw shaft portion. The engagement force is more sufficiently secured. In addition, since the protrusion in the boss portion is fitted into the gap between both ends of the engaging portion, the engaging portion does not turn around the axis of the insertion hole. Therefore, the screw engaged with the engaging portion is not loosened by the turning of the engaging portion.

According to a seventh aspect of the present invention, in the screw fixing member according to the present invention, an object to be attached such as a wiring device forms an internal space having an open portion in at least one of the attachment bodies attached using screws. Thus, the screw fixing member for fixing the screw inserted in the insertion hole of the boss portion from the open portion side, accommodated in the boss portion located on the inner surface side of the peripheral wall surrounding the inner space. This screw fixing member includes an elastically deformable wire. The wire has an engaging portion that engages with a screw shaft portion of the screw inserted into the insertion hole. Here, the engagement portion is provided in a pair so as to sandwich the screw shaft portion inserted into the insertion hole from both sides, and the pair of engagement portions is the screw shaft inserted in the insertion hole. It is formed in an arc shape along the outer periphery of the part. In addition, the wire rod has an extending portion that extends from one end of the pair of engaging portions located on one end side thereof in a direction away from the engaging portions and is supported in the boss portion, The extended sides of the extended portions are connected to each other, and the engaging portion and the extended portion are formed in a substantially U shape. Therefore, for the insertion of the screw shaft portion into the insertion hole, the engagement portion is pushed outwardly by the screw protrusion of the screw shaft portion and deformed outward, whereby the screw shaft portion is inserted. The screw shaft portion engages with the screw shaft portion so as to be fitted in the screw recess of the screw shaft portion by the return force due to the elasticity of the wire rod, and allows the screw shaft portion to be inserted from the insertion hole. When the engagement portion engaged with the screw shaft portion is about to move in the removal direction of the screw shaft portion, the back side of the insertion hole is provided on the peripheral surface of the insertion hole. The screw shaft portion is pressed by an inclined surface away from the axis of the insertion hole, thereby preventing the screw shaft portion from moving in the removal direction.

Thus, in order to attach an object to be attached such as a wiring device to the attachment body, a screw is pushed into the insertion hole provided in the boss portion of the attachment body from the open portion side. By doing so, the engaging portion of the wire in the screw fixing member is pressed against the screw shaft portion. At the same time, the engaging part is pushed outward by the screw projection of the screw shaft part and deformed outward, and the screw shaft part is allowed to move in the insertion direction. Inserted into the hole. When the screw has been pushed in, the engaging portion of the wire engages with the screw shaft so as to fit into the screw recess of the screw shaft by the restoring force due to the elasticity of the wire, and thus the screw is fixed. The adherend is attached to the attachment body. Here, with respect to the screw shaft portion coming out of the insertion hole, the engaging portion engaged with the screw shaft portion is attached to the screw shaft portion and moves in the direction in which the screw shaft portion is moved. By being pushed by the provided inclined surface, the engaging portion presses the screw shaft portion. And this omission prevents the screw from coming off. Here, since the engaging portion is formed of a wire rod, it can be easily tilted in the direction of the spiral of the screw recess of the screw shaft portion and can be securely fitted into the screw recess. Thus, the engagement force between the engagement portion and the screw shaft portion is sufficiently ensured. Further, since the engaging portion is formed in an arc shape along the outer periphery of the screw shaft portion, the entire engaging portion formed in the arc shape may be fitted into the screw recess of the screw shaft portion. Thus, the engagement force of the engagement portion with the screw shaft portion is further sufficiently ensured.

  According to the attachment body and the screw fixing member according to the present invention, the engaging portion can be easily inclined in the direction of the spiral of the screw recess of the screw shaft portion, and can be securely fitted into the screw recess. Therefore, it is possible to secure the sufficient engagement force with the screw and securely attach the adherend.

  The best mode for carrying out an attachment body and a screw fixing member according to the present invention will be described below with reference to the drawings.

  1 to 6 show a first embodiment of the present invention. Reference numeral 1 in the figure denotes a building wall. Reference numeral 2 denotes a wiring device such as an outlet or a switch as an attachment. Reference numeral 3 denotes a holding panel as a holding material for holding the wiring device 2. 4 is a screw as a fixing tool. Reference numeral 5 denotes a wiring box as an attachment body to which the wiring device 2 is attached using screws 4.

  Here, the holding panel 3 is formed in a frame shape, and the wiring device 2 is attached in the frame. The holding panel 3 is formed with holes 3a through which the screws 4 are inserted on each side thereof, for example, the upper and lower sides.

  The wiring box 5 includes a peripheral wall 5c surrounding the internal space 5b so as to form an internal space 5b having an open portion 5a on one side, and bosses 6 and 6 positioned on the inner surface side of the peripheral wall 5c. The boss portion 6 has an insertion hole 6a into which the screw 4 is inserted from the open portion 5a side. In this case, an inclined surface 6b is provided on the peripheral surface of the insertion hole 6a so as to be farther away from the insertion hole 6a. Also, a screw fixing member 7 for fixing the screw 4 inserted into the insertion hole 6a from the open portion 5a side is accommodated in the boss portion 6. The screw fixing member 7 includes a metal wire 8 as a wire that can be elastically deformed. And the metal wire 8 has the engaging part 8a engaged with the screw shaft part 4a of the screw 4 inserted in the insertion hole 6a.

  Therefore, when the screw shaft portion 4a is inserted into the insertion hole 6a of the boss portion 6, the engaging portion 8a of the metal wire 8 is pushed outwardly by the screw protrusions of the screw shaft portion 4a and deformed outward. Thus, the screw shaft portion 4a is allowed to move in the insertion direction P and is engaged with the screw shaft portion 4a so as to be fitted into the screw recess of the screw shaft portion 4a by the restoring force of the metal wire 8 due to elasticity. . On the contrary, when the screw shaft portion 4a is removed from the insertion hole 6a, the engaging portion 8a engaged with the screw shaft portion 4a tries to move in the removal direction Q of the screw shaft portion 4a and the inclined surface 6b. Is pressed to press the screw shaft portion 4a to prevent the screw shaft portion 4a from moving in the pulling direction Q.

  Specifically, the wiring box 5 is made of a synthetic resin and has a box shape with the opening 5a on the front side, for example, a rectangular parallelepiped shape. Therefore, the boss portion 6 is formed on each of the upper and lower sides of the wiring box 5 so as to protrude from the peripheral wall 5c toward the internal space 5b. And the insertion hole 6a is formed in this boss | hub part 6 toward the back from the front side (namely, the said opening part 5a side) of the box 5 for wiring. In addition, a communication hole 5d is formed in the boss portion 6 so as to communicate with the insertion hole 6a from the outer surface of the peripheral wall 5c. By passing through this communication hole 5d, the screw fixing member 7 is inserted into the insertion hole 6a side. . Specifically, the communication hole 5d has a peripheral wall 5c side sandwiching a connecting piece 8d side in an extending portion 8b (described later) of the metal wire 8 on the left and right and front and rear sides, and an engaging portion 8a side in the extending portion 8b. Is sandwiched between the left and right sides to create a space in the front and rear. The inclined surface 6b is formed in a conical shape so that the diameter gradually increases from the small diameter portion 6c of the insertion hole 6a except for the side of the communication hole 5d. And the rear part of the insertion hole 6a connected to the conical inclined surface 6b from the rear is a large-diameter part 6d and opens rearward.

  The screw fixing member 7 is for fixing the screw 4 inserted into the insertion hole 6 a of the boss portion 6 from the front side (that is, the open portion 5 a side), and is made of the metal wire 8. The engaging portion 8a is formed in an arc shape along the outer periphery of the screw shaft portion 4a inserted into the insertion hole 6a. Specifically, a pair of engaging portions 8a are provided so as to sandwich the screw shaft portion 4a inserted into the insertion hole 6a from both sides. Here, the metal wire 8 has extending portions 8b and 8b extending from one end of the pair of engaging portions 8a and 8a in a direction away from the engaging portions 8a and 8a. The extended sides of the installation portions 8b and 8b are connected. In the illustrated embodiment, the extending portions 8b and 8b are formed of a pair of parallel opposing pieces 8c and 8c extending from the engaging portions 8a and 8a, and a distal end side where the opposing pieces 8c and 8c are extended. And a connecting piece 8d to be connected. Thus, the metal wire 8 is formed in a substantially U shape by the engaging portion 8a and the extending portion 8b. And this extending part 8b is supported in the boss | hub part 6 via the communication hole 5d, and the engaging part 8a is hold | maintained so that it may not rotate to the surroundings of the axial center of the insertion hole 6a. And this extension part 8b is located in the outer side (in the illustrated embodiment, the base end side of the boss part 6) opposite to the inner space 5b side with respect to the insertion hole 6a. Become.

  Next, functions and effects of the wiring box 5 and the screw fixing member 7 having the above-described configuration will be described. The wiring box 5 is previously attached to a column or the like on the back side of the wall 1 with a fixing tool such as a wood screw. Therefore, in order to attach the wiring device 2 to the wiring box 5, a holding panel in which the wiring device 2 is attached to the front side of the wall 1 in the wall hole 1 a portion opened in the wall 1 corresponding to the wiring box 5. 3 is assigned. Thereafter, the screw 4 (specifically, the screw shaft portion 4a) is passed through the hole 3a of the holding panel 3, and the insertion hole 6a provided in the boss portion 6 of the wiring box 5 is inserted into the front side (that is, the open portion 5a side). ) To push in the screw 4. By doing so, the engaging portions 8a and 8a of the metal wire 8 in the screw fixing member 7 are pressed against the screw shaft portion 4a. At the same time, the engaging portions 8a, 8a are pushed outwardly by the screw projections of the screw shaft portion 4a and deformed outward, and the screw shaft portion 4a is allowed to move in the insertion direction P. The shaft portion 4a is inserted into the insertion hole 6a so as to be inserted between the pair of engaging portions 8a and 8a. When the push-in of the screw 4 is finished, the engaging portions 8a, 8a of the metal wire 8 are fitted into the screw recesses of the screw shaft 4a by the restoring force due to the elasticity of the metal wire 8, and the screw shaft 4a. Engage with. Thus, the screw 4 is fixed, and the wiring device 2 is attached to the wiring box 5 together with the holding panel 3.

  Here, when the screw shaft portion 4a is removed from the insertion hole 6a, the engaging portions 8a and 8a engaged with the screw shaft portion 4a are moved by the screw shaft portion 4a in the removal direction Q. As described above, the engaging portions 8a and 8a press the screw shaft portion 4a by being pressed by the inclined surface 6b provided on the peripheral surface of the insertion hole 6a. And, by this pressing, the screw 4 is prevented from coming off. Here, since the engaging portion 8a is formed of the metal wire 8, it can be easily inclined in the direction of the spiral of the screw groove of the screw shaft portion 4a and can be surely fitted into the screw groove. Yes (see FIG. 2). Thus, the engagement force of the engagement portion 8a with the screw shaft portion 4a can be sufficiently secured, and the wiring device 2 can be securely attached to the wiring box 5. In FIG. 1 and FIG. 2, in particular, in the engagement portion 8 a portion of the metal wire 8, the solid line indicates the engagement portion on the front side of the screw shaft portion 4 a and the broken line indicates the engagement portion on the other side of the screw shaft portion 4 a. Indicates the joint.

  Moreover, since the engaging portion 8a is formed in an arc shape along the outer periphery of the screw shaft portion 4a, the entire engaging portion 8a formed in this arc shape is fitted into the screw recess of the screw shaft portion 4a. It can be jammed (see FIG. 2). Therefore, the engagement force of the engagement portion 8a with the screw shaft portion 4a is more sufficiently secured. In addition, since the extending portion 8b of the metal wire 8 is supported in the boss portion 6, the engaging portion 8a does not rotate around the axis of the insertion hole 6a. Therefore, the screw 4 engaged with the engaging portion 8a is not loosened by the turning of the engaging portion 8a.

  Further, as described above, the metal wire 8 is used for the screw fixing member 7 for fixing the screw 4, and the engaging portion 8 a that engages with the screw shaft portion 4 a in the metal wire 8 is screwed. It is formed in an arc shape along the outer periphery of the shaft portion 4a. Thus, by forming the engaging portion 8a formed by the metal wire 8 in an arc shape along the screw shaft portion 4a, the metal wire 8, and thus the screw fixing member 7 can be downsized. And since the screw fixing member 7 accommodated in the boss | hub part 6 can be reduced in size in this way, the boss | hub part 6 can be made small and the internal space 5b of this wiring box 5 can be taken widely. . Therefore, a large number of wiring devices 2, such as a large wiring device 2 in this internal space 5b, for example, three wiring devices 2, 2 arranged side by side, or two wiring devices 2, 2 arranged so as to be vertically separated from each other. 2, 2 can be accommodated, or can be accommodated with a margin. Here, the metal wire 8 has an extending portion 8b in addition to the engaging portion 8a. Therefore, when the position of the screw 4, that is, the position of the insertion hole 6a cannot be changed, the extended portion 8b is disposed on the outer side opposite to the inner space 5b side (in the illustrated embodiment, the boss portion). 6 on the base end side), even if there is the extending portion 8b, the internal space 5b can be widened, and a large wiring device 2 or a plurality of wiring devices 2, 2 can be accommodated, or can be accommodated with a margin.

  By the way, when attaching the wiring device 2 to the wiring box 5, after the screw shaft portion 4a of the screw 4 is pushed into the insertion hole 6a of the wiring box 5, the screw 4 is further rotated in the tightening direction. May be. Thus, by rotating the screw 4, the wiring device 2 can be firmly fixed to the wiring box 5.

  On the contrary, in order to remove the wiring device 2 from the wiring box 5, the screw 4 engaged with the engaging portion 8a is rotated in the loosening direction. By doing so, the screw 4 is retracted and removed from the boss portion 6 (specifically, the insertion hole 6a), and the wiring device 2 is removed from the wiring box 5 together with the holding panel 3.

  In addition, this invention is not necessarily limited to embodiment mentioned above, A various other change is possible. For example, the engaging portions 8a may not be provided as a pair so as to sandwich the screw shaft portion 4a from both sides, but may be formed in a substantially ring shape as shown in FIG. 7 to FIG. 11 or FIG. Good. In this case, the engaging portion 8a formed in a substantially ring shape can be fitted over the entire circumference of the screw recess of the screw shaft portion 4a. Therefore, the engagement force of the engagement portion 8a with the screw shaft portion 4a is further sufficiently ensured.

  Here, in the second embodiment shown in FIGS. 7 to 11, the metal wire 8 has an extending portion 8b, and the extending portion 8b is engaged from one end of the engaging portion 8a. It extends in a direction away from the portion 8a. As in the first embodiment, the extending portion 8b is supported in the boss portion 6 so that the engaging portion 8a is held so as not to rotate around the axis of the insertion hole 6a. . Specifically, the screw fixing member 7 includes a support member 9 that supports the metal wire 8 in addition to the metal wire 8. The metal wire 8 is supported by the support member 9 and, together with the support member 9, passes through the communication hole 5 d opened from the outer surface of the peripheral wall 5 c to the insertion hole 6 a and enters the boss portion 6. Inserted. Here, the support member 9 is formed in a plate shape, and a recess 9a into which the metal wire 8 is fitted is formed on the front surface thereof. That is, the recess 9a includes a first recess 9b in which the engaging portion 8a of the metal wire 8 is fitted, and a second recess 9c in which the extended portion 8b of the metal wire 8 is fitted. The first recess 9b has a through hole 9d through which the screw shaft portion 4a passes. The boss portion 6 has a slit 6e that is located in front of the second depression 9c and communicates with the second depression 9c and the insertion hole 6a. Then, by supporting the extending portion 8b with the slit 6e and / or the second recess 9c, the engaging portion 8a is held so as not to rotate around the axis of the insertion hole 6a. In this way, the extending portion 8b of the metal wire 8 is supported in the boss portion 6, so that the engaging portion 8a does not rotate around the axis of the insertion hole 6a, and this engaging portion 8a. The screw 4 engaged with the screw 4 is not loosened by the rotation of the engaging portion 8a.

  In the third embodiment shown in FIGS. 12 to 16, the metal wire 8 is formed of an engaging portion 8a and a gap 8e is provided between both ends of the engaging portion 8a. A projection 6f that fits into the gap 8e is provided in the boss portion 6, and the engagement portion 8a is held by the projection 6f so as not to rotate around the axis of the insertion hole 6a. As described above, the protrusion 6f in the boss 6 is fitted into the gap 8e between both ends of the engaging portion 8a, so that the engaging portion 8a does not rotate around the axis of the insertion hole 6a. The screw 4 engaged with the engaging portion 8a is not loosened by the turning of the engaging portion 8a. Further, in this embodiment, the metal wire 8 is inserted into the insertion hole 6a from the rear of the insertion hole 6a. The metal wire 8 is supported by the lid member 10 inserted through the communication hole 5d opened from the outer surface of the peripheral wall 5c so as to pass through the insertion hole 6a so as not to come out behind the insertion hole 6a. The lid member 10 has a through hole 10a through which the screw shaft portion 4a passes.

  Further, the engaging portion 8a of the metal wire 8 is on a plane perpendicular to the axis of the insertion hole 6a before the screw shaft portion 4a is inserted into the insertion hole 6a. Before being inserted into 6a, it may be inclined so as to follow the spiral shape of the screw of the screw shaft portion 4a or to approach the spiral shape.

  In addition, the engaging portion 8a may not be formed in an arc shape along the outer periphery of the screw shaft portion 4a, but may extend straight, for example.

  Further, the wire may not be the metal wire 8, that is, the wire made of a synthetic resin or a composite material including a fiber material, and the material is not particularly limited.

  Further, the attachment body is a frame-like attachment body in which the internal space has an open portion on one side and is open to the other, even if the internal space 5b is not the wiring box 5 having the open portion 5a on one side. May be. As this frame-shaped attachment body, for example, there is a wiring box cover or the like attached to the wiring box while the wiring device 2 as an attachment is attached. Here, as the wiring box cover, there are a box cover with coating, a plate-shaped box cover, and the like. Further, the attachment body is not limited to the wiring box 5 or the wiring box cover, and any attachment body can be used as long as the attachment object is attached using the screws 4.

  In addition, the attachment object may be a wiring box cover that is attached to the wiring box 5 as the attachment body, and is not limited to the wiring equipment 2, instead of the wiring equipment 2. .

It is a longitudinal cross-sectional view of 1st embodiment of this invention. Similarly, it is the A section enlarged view in FIG. Similarly, it is sectional drawing by the BB line in FIG. Similarly, it is FIG. 2 equivalent figure before inserting a screw. Similarly, it is sectional drawing by CC line in FIG. Similarly, it is a perspective view of a screw fixing member. FIG. 3 is a view corresponding to FIG. 2 of a second embodiment of the present invention. Similarly, it is sectional drawing by the DD line in FIG. Similarly, it is FIG. 7 equivalent figure before inserting a screw. Similarly, it is sectional drawing by the EE line in FIG. Similarly, it is an exploded perspective view of a screw fixing member. FIG. 9 is a view corresponding to FIG. 2 of a third embodiment of the present invention. Similarly, it is sectional drawing by the FF line in FIG. FIG. 13 is also a view corresponding to FIG. 12 before inserting a screw. Similarly, it is sectional drawing by the GG line in FIG. Similarly, it is a perspective view of a screw fixing member.

2 Wiring equipment (attachment)
4 Screw 4a Screw shaft 5 Wiring box (attachment)
5a Open part 5b Internal space 5c Perimeter wall
5d Communication hole 6 Boss portion 6a Insertion hole 6b Inclined surface 6f Projection 7 Screw fixing member 8 Metal wire (wire)
8a Engagement part 8b Extension part
8c Opposite piece
8d Connecting piece 9 Support member P Insertion direction Q Removal direction

Claims (7)

The object to be attached such as a wiring device is attached using screws,
A peripheral wall that surrounds the internal space so as to form an internal space having an open portion at least at one side, and a boss portion located on the inner surface side of the peripheral wall;
The boss part has an insertion hole into which the screw is inserted from the open part side,
On the peripheral surface of the insertion hole, an inclined surface that is further away from the axis of the insertion hole is provided toward the back side of the insertion hole,
A screw fixing member for fixing the screw inserted into the insertion hole is accommodated in the boss portion,
The screw fixing member includes an elastically deformable wire, and the wire has an engaging portion that engages with a screw shaft portion of the screw inserted into the insertion hole,
The engaging portion is disposed in the boss portion so as to be positioned behind the front end of the inclined surface provided in the insertion hole with a space therebetween.
The engaging portion is provided with a space on its outer side that allows the engaging portion to expand and deform in the radial direction of the insertion hole, and does not rotate around the axis of the insertion hole. , Held in the boss part,
For the insertion of the screw shaft portion into the insertion hole, the engaging portion is pushed by the screw ridges of the screw shaft portion and expands outward toward the radial side of the insertion hole. Thus, the screw shaft portion is allowed to move in the insertion direction, and the screw shaft portion is contracted to fit into the screw recess of the screw shaft portion by the restoring force due to the elasticity of the wire itself. When the screw shaft portion is detached from the insertion hole, the engaging portion engaged with the screw shaft portion tends to move in the direction in which the screw shaft portion is removed. The attachment body is characterized in that the screw shaft portion is pressed by being pressed to prevent the screw shaft portion from moving in the removal direction. A pair of the engaging portions are provided so as to sandwich the screw shaft portion inserted into the insertion hole from both sides, and the pair of engaging portions is an outer periphery of the screw shaft portion inserted into the insertion hole. It is formed in an arc shape along the,
The wire has an extending portion extending from one end of the pair of engaging portions located on one end side thereof in a direction away from the engaging portions, and the extending portions are extended. The sides are connected,
By the extended portion is supported in the boss portion, the engaging portion is mounted body according to claim 1, characterized in Rukoto held so as not rotate about the axis of the insertion hole . The object to be attached such as a wiring device is attached using screws,
A peripheral wall that surrounds the internal space so as to form an internal space having an open portion at least at one side, and a boss portion located on the inner surface side of the peripheral wall;
The boss part has an insertion hole into which the screw is inserted from the open part side,
On the peripheral surface of the insertion hole, an inclined surface that is further away from the axis of the insertion hole is provided toward the back side of the insertion hole,
A screw fixing member for fixing the screw inserted into the insertion hole is accommodated in the boss portion,
The screw fixing member includes an elastically deformable wire, and the wire has an engaging portion that engages with a screw shaft portion of the screw inserted into the insertion hole,
A pair of the engaging portions are provided so as to sandwich the screw shaft portion inserted into the insertion hole from both sides, and the pair of engaging portions is an outer periphery of the screw shaft portion inserted into the insertion hole. Is formed in an arc shape along
The wire has an extending portion extending from one end of the pair of engaging portions located on one end side thereof in a direction away from the engaging portions, and the extending portions are extended. side is Ri Contact are connected, and said extended portion is positioned on the opposite side of the internal space side with respect to the insertion hole,
The extending portion is supported in the boss portion, so that the engaging portion is held so as not to rotate around the axis of the insertion hole ,
For the insertion of the screw shaft portion into the insertion hole, the engaging portion is pushed outward by the screw protrusion of the screw shaft portion and deformed outward, so that the screw shaft portion is inserted in the insertion direction. The screw shaft is engaged with the screw shaft portion so as to be fitted into the screw recess of the screw shaft portion by the restoring force due to the elasticity of the wire rod, and the screw shaft portion is removed from the insertion hole. In contrast, the engaging portion engaged with the screw shaft portion is pushed by the inclined surface in an attempt to move in the pulling direction of the screw shaft portion, thereby pressing the screw shaft portion, bis shaft portion, adherend preparative you wherein preventing movement of the said exit direction. The extending portion is composed of a pair of opposed pieces extending from the engaging portion, and a connecting piece for connecting the opposed pieces at the extended distal end side,
The boss portion is formed with a communication hole that communicates from the outer surface of the peripheral wall to the insertion hole, and the communication hole is such that the peripheral wall side sandwiches the connecting piece side of the extending portion on the left and right and front and rear sides, and The engagement portion side of the extension portion is sandwiched between right and left, and it is opened to form a space in the front and rear,
Wherein it through the communication hole, the screw fixing member is attached as claimed in claim 2 or 3, characterized in Rukoto is inserted into the insertion hole side. The object to be attached such as a wiring device is attached using screws,
A peripheral wall that surrounds the internal space so as to form an internal space having an open portion at least at one side, and a boss portion located on the inner surface side of the peripheral wall;
The boss part has an insertion hole into which the screw is inserted from the open part side,
On the peripheral surface of the insertion hole, an inclined surface that is further away from the axis of the insertion hole is provided toward the back side of the insertion hole,
A screw fixing member for fixing the screw inserted into the insertion hole is accommodated in the boss portion,
The screw fixing member includes an elastically deformable wire and a support member that supports the wire,
The wire is inserted into the boss part in a state supported by the support member,
The wire rod engages with a screw shaft portion of the screw inserted into the insertion hole, and has a substantially ring-shaped engagement portion and a direction away from the engagement portion from one end of the engagement portion. and a extended portion that extends,
The extending portion is supported in the boss portion, so that the engaging portion is held so as not to rotate around the axis of the insertion hole ,
For the insertion of the screw shaft portion into the insertion hole, the engaging portion is pushed outward by the screw protrusion of the screw shaft portion and deformed outward, so that the screw shaft portion is inserted in the insertion direction. The screw shaft is engaged with the screw shaft portion so as to be fitted into the screw recess of the screw shaft portion by the restoring force due to the elasticity of the wire rod, and the screw shaft portion is removed from the insertion hole. In contrast, the engaging portion engaged with the screw shaft portion is pushed by the inclined surface in an attempt to move in the pulling direction of the screw shaft portion, thereby pressing the screw shaft portion, bis shaft portion, the omission adherend preparative characterized that you prevented from moving in the direction. The object to be attached such as a wiring device is attached using screws,
A peripheral wall that surrounds the internal space so as to form an internal space having an open portion at least at one side, and a boss portion located on the inner surface side of the peripheral wall;
The boss part has an insertion hole into which the screw is inserted from the open part side,
On the peripheral surface of the insertion hole, an inclined surface that is further away from the axis of the insertion hole is provided toward the back side of the insertion hole,
A screw fixing member for fixing the screw inserted into the insertion hole is accommodated in the boss portion,
The screw fixing member includes an elastically deformable wire, and the wire has an engaging portion formed in a substantially ring shape that engages with a screw shaft portion of the screw inserted into the insertion hole. It is formed so that a gap is provided between both ends of the engaging portion, and
A projection that fits into the gap is provided in the boss portion, and the engagement portion is held by the projection so as not to rotate around the axis of the insertion hole.
For the insertion of the screw shaft portion into the insertion hole, the engaging portion is pushed outward by the screw protrusion of the screw shaft portion and deformed outward, so that the screw shaft portion is inserted in the insertion direction. The screw shaft is engaged with the screw shaft portion so as to be fitted into the screw recess of the screw shaft portion by the restoring force due to the elasticity of the wire rod, and the screw shaft portion is removed from the insertion hole. In contrast, the engaging portion engaged with the screw shaft portion is pushed by the inclined surface in an attempt to move in the pulling direction of the screw shaft portion, thereby pressing the screw shaft portion, bis shaft portion, the omission adherend preparative characterized that you prevented from moving in the direction. Boss located on the inner surface side of the peripheral wall surrounding the inner space so as to form an inner space having an open portion in at least one of the attachments to which the attachment object such as a wiring device is attached using screws A screw fixing member for fixing the screw received in the insertion portion and inserted into the insertion hole of the boss portion from the open portion side,
It comprises an elastically deformable wire, and the wire has an engaging portion that engages with a screw shaft portion of the screw inserted into the insertion hole,
A pair of the engaging portions are provided so as to sandwich the screw shaft portion inserted into the insertion hole from both sides, and the pair of engaging portions is an outer periphery of the screw shaft portion inserted into the insertion hole. Is formed in an arc shape along
The wire has an extending portion that extends from one end of the pair of engaging portions located on one end side thereof in a direction away from the engaging portions and is supported in the boss portion. The extended side of the installation part is connected, and the engagement part and the extension part are formed in a substantially U shape,
For the insertion of the screw shaft portion into the insertion hole, the engaging portion is pushed outward by the screw protrusion of the screw shaft portion and deformed outward, so that the screw shaft portion is inserted in the insertion direction. The screw shaft is engaged with the screw shaft portion so as to be fitted into the screw recess of the screw shaft portion by the restoring force due to the elasticity of the wire rod, and the screw shaft portion is removed from the insertion hole. In contrast, the engagement portion engaged with the screw shaft portion is provided on the peripheral surface of the insertion hole so as to move in the pulling direction of the screw shaft portion, and the further back the insertion hole is A screw fixing member, wherein the screw shaft portion is pressed by an inclined surface separated from the axis of the insertion hole to prevent the screw shaft portion from moving in the removal direction.

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