JP6269321B2 - nut - Google Patents

Description

  The present invention relates to a push-in nut.

  Conventionally, the nut is divided into divided segments, and these nut segments are guided and expanded / contracted in the taper hole of the casing. The taper hole of the casing has a narrow end at the lower end so that the bolt can penetrate. The nut segment has an insertion port at the wider end of the upper end, and the nut segment is prevented from rotating between a plurality of sliding guide claws provided in the taper hole. A nut that is crimped to a narrower side is known (for example, Patent Document 1).

  According to such a nut, the nut can be inserted by simply pressing it from the tip of the bolt to the vicinity of the fixing position. Therefore, the nut tightening operation is extremely convenient compared to the insertion by rotation.

Utility Model Gazette Showa 55-48171

  However, in such a nut, after the nut is pushed into the bolt, the nut itself needs to be further tightened by rotating in the tightening direction a few times. Therefore, when the bolt is pushed in with the nut attached to the body to be fastened, it is necessary to rotate it integrally with the body to be fastened, and depending on the body to be fastened, it cannot be rotated and retightening cannot be performed. There was a case.

  Therefore, in order to solve the above-described problems, the present invention provides a nut that can be tightened even when the nut is attached to the fastened body and the nut cannot be rotated integrally with the fastened body. is there.

  In order to achieve the above-described object, the nut according to the present invention includes a casing having a cylindrical inner space and a screw body inserted into the casing, and the screw body expands in diameter toward the rear. A substantially cylindrical body having a taper hole, wherein a plurality of guide walls are provided on the taper surface of the taper hole in a circumferential shape with an appropriate gap, and a split screw is provided between the adjacent guide walls, respectively. An internal thread portion corresponding to the external thread body is formed so as to be movable along the axial direction of the surface, and an energizing means for always energizing the divided screw forward is provided in the thread body. Rotating means for rotating.

  The screw body includes a rotating casing and a receiving member. The rotating casing has a cylindrical portion into which the receiving member is inserted, and the tapered hole is provided in the receiving member and communicates with the tapered hole. An insertion hole can be provided in the rotating casing.

  The rotating means meshes an annular gear provided in the screw body with a shaft-equipped gear having a shaft portion attached to a through-hole provided in the casing, and rotates the shaft portion to rotate the screw body. Can be rotated.

  Between each guide wall at the front end portion of the tapered surface, a flange portion protruding toward the inner diameter direction is provided, and formed by the flange portion provided between the adjacent guide walls and the guide walls. By making the heights of the flanges of the plurality of receiving portions different in the front-rear direction, divided screws having substantially the same shape can be arranged in the receiving portion to form the female screw portion.

  It can be set as a handle of a building door to which any of the above nuts is attached.

  As described above, according to the nut according to the present invention, even if the nut is attached to the fastened body and the nut cannot be rotated integrally with the fastened body, the tightening can be performed.

(A) is a front view of the nut concerning a 1st embodiment of the present invention. (B) is AA sectional drawing of Fig.1 (a). It is a disassembled perspective view of the nut which concerns on 1st Embodiment of this invention. It is an expanded view in the receiving member of the state which has each arrange | positioned the split screw in each receiving part of the nut which concerns on 1st Embodiment of this invention. It is an expanded view in the receiving member of the state which has each arrange | positioned the split screw in each receiving part of the nut which concerns on 2nd Embodiment of this invention. It is sectional drawing of the nut which concerns on 3rd Embodiment of this invention. It is sectional drawing of the state which fastened the handle of the door for buildings to which the nut concerning this invention was attached to the door.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. However, the present invention is not limited to this embodiment. In this specification, let the insertion port 21 side which inserts the volt | bolt of the nut N be a front side, and let the insertion port 22 side which the volt | bolt inserted from this insertion port 21 penetrates be a back side.

[First Embodiment]
Fig.1 (a) is a figure which shows the front view (figure of the state which looked at the nut N from the front side) of the nut N which concerns on one Embodiment of this invention. FIG.1 (b) is AA sectional drawing of Fig.1 (a). FIG. 2 is an exploded perspective view of the nut N of FIGS. 1 (a) and 1 (b).

  As shown in FIG. 1B, the nut N according to this embodiment includes a casing 1, a screw body 2 inserted into the casing 1, and a rotating unit 7 that rotates the screw body 2 inserted into the casing 1. Is provided.

  As shown in FIGS. 1A and 1B and FIG. 2, the casing 1 has a cylindrical internal space. Although the casing 1 in this embodiment is formed in a substantially cylindrical shape, the outer shape is not particularly limited as long as the screw body 2 inserted into the casing 1 is rotatable. Various shapes such as a rectangular column having an internal space and a hexagonal column having a cylindrical internal space can be used.

  A groove 11 is provided on the inner peripheral surface near the front end of the casing 1. A stop member 8 that restricts the forward movement of the screw body 2 inserted into the casing 1 is attached to the groove 11. Although the groove 11 of the casing 1 shown in FIG. 1B is an annular groove 11, a discontinuous groove 11 can be provided at an appropriate position according to the stopper member 8 to be used.

  On the inner peripheral surface near the rear side of the casing 1, a step portion 12 for restricting the backward movement of the inserted screw body 2 is provided. The stepped portion 12 protrudes toward the inner diameter direction of the casing 1. Although the step part 12 of this embodiment is provided over the perimeter, it is not limited to this, For example, the several step part 12 can also be provided in circumferential form at appropriate intervals.

  A rotating means 7 for rotating the screw body 2 inserted into the casing 1 is attached to the casing 1. The rotating means 7 in the present embodiment is configured to rotate the screw body 2 within the casing 1 by meshing a shaft-equipped gear 71 attached to the casing 1 and an annular gear 71 provided on the screw body 2 described later. .

  The casing 1 is provided with a through hole 13 for attaching the shaft portion 72 of the shaft-equipped gear 71. The through hole 13 is provided in the vicinity of the rear end of the casing 1 and on the rear side of the step portion 12.

  A gear is provided at one end of the shaft portion 72 of the shaft-equipped gear 71, and a tool hole 73 into which a fastening tool such as a hexagon wrench can be inserted is provided at the other end.

  The screw body 2 in the present embodiment includes a rotating casing 3 and a receiving member 4.

  As shown in FIG. 1 (b), an insertion port 21 into which the male screw body B is inserted is provided on the front side (left side in FIG. 1 (b)) of the screw body 2 inserted and fixed to the casing 1. An insertion port 22 through which the male screw body B can be inserted is provided on the side (right side in FIG. 1B). Specifically, an insertion port 21 for inserting the male screw body B is provided on the front side of the receiving member 4, and an insertion port 22 through which the male screw body B can be inserted is provided on the rear side of the rotary casing 3. Is formed with an insertion hole 23 through which the male screw body B can be inserted in the axial direction of the nude body so as to connect the insertion port 21 and the insertion port 22. A female screw portion 24 corresponding to the male screw body B inserted through the screw body 2 is formed by the plurality of divided screws 5 around the insertion hole 23.

  The rotary casing 3 has a cylindrical portion 31 into which the receiving member 4 is inserted, and a hollow rear end wall 32 is provided at the rear end of the cylindrical portion 31. The inner side surface (front-facing surface) of the rear end wall 32 serves as a wall for restricting rearward movement of the urging body 61 arranged in the urging means arrangement space 6 described later. It is good also as a structure which does not provide 32. In that case, it is good also as a structure which provides the groove | channel 11 in the internal peripheral surface of the rotation casing 3, and attaches the stop member for controlling the movement to the back of the urging | biasing body 61. FIG.

  The screw body 2 is provided with rotating means 7 for rotating the screw body 2 inserted into the casing 1. Specifically, an annular gear 71 that meshes with a shaft-equipped gear 71 attached to the casing 1 is provided in the screw body 2.

  In the present embodiment, an annular gear 71 is provided over the entire circumference at the corner on the rear end side of the cylindrical portion 31 of the rotating casing 3. Specifically, as shown in FIG. 1B, the gear portion of the shaft-equipped gear 71 attached to the casing 1 is a bevel gear, and the annular gear 71 meshing with the gear portion is the rear end of the cylindrical portion 31 of the rotating casing 3. It is provided on the inclined surface of the corner. More specifically, the rotating casing 3 has a small-diameter cylindrical portion 33 having an inner diameter slightly longer than the outer diameter of the male screw body B to be inserted rearward from a rear end wall 32 provided in the cylindrical portion 31. Is protruding. The rotary casing 3 has a two-stage cylindrical shape having a large-diameter cylindrical portion 31 located on the front side and a small-diameter cylindrical portion 33 located on the rear side, and a step formed on the outer peripheral surface of the two-stage cylindrical shape. An annular gear 71 is formed in the shaped portion.

  The rotating means 7 is not particularly limited as long as the screw body 2 can rotate within the casing 1. For example, the gear portion of the shaft-equipped gear 71 attached to the casing 1 is a gear whose teeth are cut in parallel to the rotation axis, that is, a spur gear, and the outer surface (rear facing surface) of the rear end wall 32 of the rotating casing 3. ) In which the annular gear 71 is circumferentially provided, or a concave portion is provided on the outer peripheral surface of the cylindrical portion 31 of the rotary casing 3 over the entire circumference, and the annular gear that meshes with the shaft-equipped gear 71 in the concave portion. 71 can also be provided.

  The rotating means 7 is preferably configured as a bevel gear, a spiral bevel gear, a zero roll bevel gear, a face gear or the like that can change the direction of torque transmission by 90 °. An annular gear 71 is provided in the cylindrical portion 31 or a small-diameter cylindrical portion 33 to be described later, and a rack cut into a flat bar is inserted through the through-hole 13 provided in the casing 1 and meshed (so-called rack and pinion). You can also

  The outer peripheral surface of the small-diameter cylindrical portion 33 of the rotary casing 3 serves as a wall that prevents the shaft-equipped gear 71 from moving in the inner diameter direction. However, in the case of a gear configured so that the shaft-equipped gear does not move in the inner diameter direction, the small-diameter cylindrical portion 33. It can also be set as the structure which does not provide.

  By forming the outer peripheral surface in the vicinity of the rear end of the cylindrical portion 31 of the rotating casing 3 to be slightly smaller in diameter than the other outer peripheral surfaces of the cylindrical portion 31, a stepped surface 34 facing rearward is formed in the cylindrical portion 31. ing. The stepped surface 34 and the stepped portion 12 provided on the inner peripheral surface of the casing 1 come into contact with each other, whereby the backward movement of the rotary casing 3 is restricted.

  A notch 35 is provided at the front end of the cylindrical portion 31. Specifically, substantially semicircular cutouts 35 are provided at positions facing each other.

  As shown in FIGS. 1B and 2, the receiving member 4 is a substantially cylindrical body having a tapered hole whose diameter increases toward the rear. A plurality of guide walls 42 are provided on the inner peripheral surface (hereinafter referred to as “taper surface 41”) of the tapered hole of the receiving member 4 in a circumferential shape with appropriate intervals. Specifically, a plurality of guide walls 42 are provided at equal intervals in the circumferential direction of the tapered surface 41.

  The guide wall 42 has a substantially wedge shape, and is provided along the tapered surface 41 so that the thickness of the wedge increases from the front end to the vicinity of the rear end of the receiving member 4. The guide wall 42 has the same circumferential width and extends in the axial direction. A flange portion 43 is provided between the guide walls 42 at the front end portion of the tapered surface 41 so as to protrude toward the inner diameter direction.

  A plurality of receiving portions 44 are formed by the adjacent guide walls 42 and the flange portions 43 provided between the guide walls 42, and the divided screws 5 are arranged in the respective receiving portions 44.

  As shown in FIG. 2, the split screw 5 has a substantially wedge shape that can be fitted to the receiving portion 44, and has a cross section in the width direction formed in a substantially fan shape. The outer surface of the split screw 5 has a shape corresponding to the tapered surface 41 of the receiving portion 44, and a thread is formed on the inner surface.

  The split screws 5 of the nut N according to the present embodiment are respectively disposed on the receiving portions 44 provided at equal intervals in the circumferential direction. That is, three divided screws 5 are arranged in the circumferential direction, but the number of receiving portions 44 and the number of divided screws 5 are not particularly limited as long as they are two or more.

  As shown in FIG. 1 (b), the split screw 5 is fitted to the receiving portion 44, the rear end of the split screw 5 is located behind the rear end of the guide wall 42, and the receiver It is formed so as to be positioned in front of the rear end of the member 4.

  As shown in FIG. 1B, from the rear end of each split screw 5 to the rear end wall 32 of the rotary casing 3 with the receiving member 4 fitted with the split screw 5 inserted in the rotary casing 3. Is the urging means arrangement space 6. An urging body 61 serving as an urging means is arranged in a compressed state in the urging means arrangement space 6, and the urging force of the urging body 61 always urges each divided screw 5 forward. That is, each divided screw 5 is in contact with the flange portion 43 while being urged. A washer may be interposed between the split screw 5 and the biasing body 61.

  In this embodiment, the urging body 61 uses a conical coil spring, but various springs may be used as long as the spring has a hollow with an inner diameter larger than the outer diameter of the bolt inserted into the nut N. Can do. The urging body 61 is not limited to a spring, and various urging bodies 61 such as rubber and urethane can be used.

  FIG. 3 is a development view in the receiving member 4 in a state where the divided screws 5 are arranged in the receiving portions 44, respectively. The thread of the split screw 5 disposed in the receiving portion 44 of the receiving member 4 is formed to be a part of a helix with respect to the axis of the screw body 2 (see the two-dot chain line in FIG. 3). . That is, the divided screws 5 arranged in the receiving portions 44 are arranged so that the screw threads of the divided screws 5 are spirally arranged in a state where the divided screws 5 are appropriately arranged in the receiving portions 44. An internal thread portion 24 is formed in the interior. More specifically, a female screw in a state where a portion corresponding to the guide wall 42 of the female screw body over the entire circumference is missing is formed.

  In the present embodiment, the height in the front-rear direction of each flange of each receiving portion 44 (hereinafter referred to as “flange height H”) is formed substantially the same. Therefore, the split screws 5 having different threads are arranged in the receiving portion 44 so that the threads are part of the spiral with respect to the axis of the screw body 2.

  On the outer peripheral surface in the vicinity of the front end of the receiving member 4, a protrusion 45 that protrudes in the outer diameter direction is provided. The protrusion 45 is provided at a position and shape corresponding to the notch 35 of the rotating casing 3 in a state where the receiving portion 44 is inserted into the rotating casing 3. In this embodiment, two protrusions 45 having a substantially semicircular cross section are provided at positions facing each other. The protrusion 45 is fitted into the notch 35 of the rotary casing 3 so that the rotary casing 3 and the receiving member 4 are connected so as not to be relatively rotatable. The cutout 35 of the rotating casing 3 and the protrusion 45 of the receiving member 4 may have any configuration as long as the rotating casing 3 and the receiving member 4 are connected so as not to be relatively rotatable. Is not particularly limited. Further, the protrusion 45 can be provided on the rotary casing 3, and the notch 35 can be provided on the receiving member 4.

  Hereinafter, a method for assembling the nut N according to the present embodiment will be described with reference to FIG.

  First, the shaft portion 72 of the shaft-equipped gear 71 is inserted into the through hole 13 provided in the casing 1 so that the gear side is located in the casing 1. Next, the rotating casing 3 is inserted into the casing 1. At this time, the stepped portion 12 of the casing 1 and the stepped surface 34 of the rotating casing 3 are brought into contact with each other while meshing the shaft-equipped gear 71 attached to the casing 1 and the annular gear 71 provided on the rotating casing 3. Next, the urging body 61 is inserted into the rotating casing 3. Specifically, it arrange | positions so that the large diameter side of a conical spring may become a back side. Next, an appropriate divided screw 5 is fitted to each receiving portion 44 of the receiving member 4. Next, the receiving member 4 fitted with the divided screw 5 is inserted into the rotating casing 3, and the protrusion 45 of the receiving member 4 is fitted into the notch 35 of the rotating casing 3. Finally, the stop member 8 is attached to the groove 11 of the casing 1. In the present embodiment, the C-ring is configured to fit into the groove 11 of the casing 1, but is not limited to this. For example, the casing 1 can be tightened to prevent the screw body 2 from coming off. You can also.

  As mentioned above, although the efficient assembly method of the nut N which concerns on this embodiment was demonstrated, the order of an assembly is not limited to the order mentioned above.

  Hereinafter, the usage method of the nut N which concerns on this embodiment is demonstrated.

  The insertion port 21 of the nut N assembled as described above and the male screw body B inserted through the through hole 13 provided in the fastened body are opposed to each other without rotating the male screw body B and the nut N. When the male screw body B is pushed from the insertion port 21 of the screw body 2, the screw thread of the male screw body B and the screw thread of the female screw portion 24 including the plurality of split screws 5 are engaged, and the split screw 5 is Since it is moved to the rear side along the tapered surface 41 against the urging body 61, the inner diameter of the female screw portion 24 is expanded, and this inner diameter is larger than the outer diameter of the thread of the male screw body B. Then, the screw thread of the male screw body B gets over the screw thread of the female screw part 24, and the male screw body B is sequentially inserted into the screw body. When there is a slack that cannot be overcome over the thread to be finally engaged, a tool hole 73 provided in the shaft portion 72 of the shaft-equipped gear 71 attached to the through hole 13 of the casing 1 The fastening tool is inserted and rotated so that the screw body 2 rotates in the fastening direction. Then, if the screw body 2 is rotated until the screw thread of the male screw body B to be finally engaged and the screw thread of the female screw portion 24 are properly engaged, the object to be fastened is fastened without looseness. Can do. When releasing the fastening state of the fastened object, a fastening tool such as a hexagon wrench is inserted into the tool hole 73 provided in the shaft portion 72 of the shaft-equipped gear 71 attached to the through hole 13 of the casing 1. Then, the screw body 2 is rotated so as to rotate in the non-fastening direction. When inserting the male screw body B into the nut N, the male screw body B can be fixed and the nut N side can be pushed in. Alternatively, the male screw body B and the nut N can be brought close to each other, B may be inserted into the nut N.

  The nut N of the present invention can be inserted to the vicinity of an appropriate fastening position simply by pushing the male screw body B, and the nut N is attached to the fastened body and rotates the nut N integrally with the fastened body. Even if this is not possible, retightening is possible.

[Second Embodiment]
The nut N according to the present embodiment is different from the first embodiment in that the arrangement of the split screws 5 is different, but the other points are the same as in the first embodiment.

  FIG. 4 is a development view in the receiving member 4 in a state where the divided screws 5 are arranged in the receiving portions 44 of the receiving member 4 in the second embodiment. The thread of the split screw 5 disposed in the receiving portion 44 of the receiving member 4 is formed to be a part of a helix with respect to the axial center of the screw body 2 (see the two-dot chain line in FIG. 4). . That is, the divided screws 5 arranged in the receiving portions 44 are arranged so that the screw threads of the divided screws 5 are spirally arranged in a state where the divided screws 5 are appropriately arranged in the receiving portions 44. The internal threads are formed in the same manner as in the first embodiment, but by making the flange heights H of the receiving portions 44 different, the divided screws 5 having substantially the same shape are formed on the receiving portions 44. The female screw is formed by fitting. That is, the flange heights H of the receiving portions 44 are made different so that the threads of the plurality of substantially identical divided screws 5 become part of the spiral.

  With such a configuration, the types of component parts can be reduced and the assembly is facilitated.

[Third Embodiment]
The nut N according to the present embodiment is different from the first embodiment in that the screw body 2 is formed integrally with the rotating casing 3 and the receiving member 4, but the other points are different from the first embodiment. It is the same.

  As shown in FIG. 5, the screw body 2 is a substantially cylindrical body having a tapered hole whose diameter increases toward the rear, and a plurality of guide walls 42 are provided on the tapered surface 41 of the receiving member 4 with appropriate gaps. The divided screws 5 are arranged between the adjacent guide walls 42 so as to be movable along the axial direction of the tapered surface 41, and the divided screws 5 are always attached to the front side in the screw body 2. A biasing means for biasing is provided, and a rotating means 7 for rotating the screw body 2 is provided.

  In the present embodiment, as shown in FIG. 5, the annular gear 71 is provided over the entire circumference at the corner of the rear end side of the cylindrical body of the screw body 2, but as in the first embodiment, the screw body. 2 is provided with a hollow rear end wall 32 and an annular gear 71 is provided on the rear end wall 32, or a circumferential recess is provided on the outer peripheral surface of the screw body 2, and an annular gear 71 is provided in the recess. Or can be configured.

  In the present embodiment, as shown in FIG. 5, a groove is provided in the vicinity of the rear end of the inner peripheral surface of the screw body 2, and the stopper member 8 for restricting the rearward movement of the urging body 61 is attached. However, a hollow rear end wall 32 may be provided at the rear end of the screw body 2.

  In FIG. 5, the flange height H is made different and the split screw 5 having the same shape is arranged on the receiving portion 44. However, the flange height H is made substantially the same and the split screw having a different shape is placed on the receiving portion 44. 5 can also be arranged.

  With this configuration, the number and types of component parts can be reduced.

  Next, a usage example of the nut N according to this embodiment described above will be specifically described.

  The nut N according to the present embodiment can be used when fastening various fastened objects. As an example, the nut 9 of the present embodiment is used to fasten the handle 9 of the building door to the door 10. Will be explained. FIG. 6 is a cross-sectional view of a state in which the handle 9 of the building door to which the nut N according to this embodiment is attached is fastened to the door 10.

  As shown in FIG. 6, the nut N of this embodiment is attached to the handle 9 of the building door attached to one surface side of the door 10, and the building door handle 9 attached to the other surface side of the door 10 is attached. Install male screw body B. Specifically, a nut N is inserted and fixed to a portion of the handle 9 of the building door that is attached to the surface of the door 10 that faces the surface of the door 10, and the handle 9 of the building door that is attached to the surface of the other door 10 is fixed. A male screw body B is attached to a portion facing the door 10 surface.

  A cylindrical portion 91 having an inner diameter substantially the same as or slightly larger than the outer diameter of the nut N is formed at both ends of the handle 9 of one building door shown in FIG. The nut N is inserted and fixed. The cylindrical portion 91 of the handle 9 for the building door is provided with a tool insertion hole 94. With the nut N inserted and fixed, the tool hole 73 provided in the nut N and the tool insertion hole 94 Are arranged at corresponding positions. Therefore, the screw body 2 of the nut N can be rotated by inserting a fastening tool such as a wrench from the tool insertion hole 94 provided in the handle 9 of the building door. Further, if the tool insertion hole 94 is provided in an inconspicuous position such as the inner surface of the building door handle 9, the building door handle 9 can be attached to the door 10 with good appearance.

  A hollow plate-like attachment portion 92 is formed at both ends of the handle 9 of the other building door, and a female screw 93 is formed on the inner periphery of the hollow portion of the attachment portion 92. The male screw body B is attached to the handle 9 of the building door by screwing the male screw body B into the female screw 93 of the attachment portion 92. With such a configuration, the male screw body B having a length corresponding to the thickness of the door 10 to be attached can be easily attached.

  Hereinafter, an attachment method for attaching the handle 9 of the building door will be described.

  The male screw body B attached to the handle 9 of the building door is inserted through the male screw through hole provided in the door 10. The inserted male screw body B and the insertion opening 21 of the nut N attached to the handle 9 of the building door are opposed to each other, and the handle 9 of one building door and the handle 9 of the other building door are connected. When both are pushed toward the door 10 side, the male screw body B is inserted into the nut N, and the handles 9 of both building doors are in contact with the door 10 respectively. In this state, a fastening tool such as a wrench is inserted from a tool insertion hole 94 provided in the handle 9 of the building door, and the screw body 2 of the nut N is rotated to perform additional tightening.

  Thus, by attaching the nut N according to the present embodiment to the handle 9 of the building door, it is possible not only to quickly attach the handle 9 of the building door to the door 10 but also to attach it appropriately without rattling. it can.

  As described above, the preferred embodiments of the present invention have been described with reference to the drawings, but various additions, changes, or deletions can be made without departing from the spirit of the present invention. Therefore, such a thing is also included in the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Casing 11 Groove 12 Step part 13 Through-hole 2 Screw body 21 Insertion port 22 Insertion port 23 Insertion hole 24 Female screw part 3 Rotating casing 31 Cylindrical part 32 Rear end wall 33 Small diameter cylindrical part 34 Step surface 35 Notch 4 Receiving member 41 Taper Surface 42 Guide wall 43 Flange portion 44 Receiving portion 45 Projection portion 5 Split screw 6 Biasing means arrangement space 61 Biasing body 7 Rotating means 71 Shafted gear 72 Shaft portion 73 Tool hole 74 Annular gear 8 Stopping member 9 Building door Handle 91 Cylindrical portion 92 Mounting portion 93 Female screw 94 Tool insertion hole 10 Door H Flange height N Nut B Male screw body

Claims (4)

A casing having a cylindrical inner space, and a screw body inserted into the casing,
The screw body is a substantially cylindrical body having a tapered hole whose diameter increases toward the rear,
A plurality of guide walls are provided on the tapered surface of the tapered hole in a circumferential shape with an appropriate gap, and divided screws are arranged between the adjacent guide walls so as to be movable along the axial direction of the tapered surface. Forming a female screw part corresponding to the male screw body,
A biasing means for constantly biasing the divided screw forward is provided in the screw body,
Have a rotating means for rotating the screw body,
The rotating means meshes an annular gear provided in the screw body with a shaft-equipped gear having a shaft portion attached to a through-hole provided in the casing, and rotates the shaft portion to rotate the screw body. Nut to rotate . The screw body includes a rotating casing and a receiving member,
The nut according to claim 1, wherein the rotating casing has a cylindrical portion into which a receiving member is inserted, the tapered hole is provided in the receiving member, and an insertion hole communicating with the tapered hole is provided in the rotating casing. Between each guide wall at the front end portion of the tapered surface, a flange portion protruding toward the inner diameter direction is provided,
By dividing the heights of the flanges in the front-rear direction of the plurality of receiving portions formed by the flange portions provided between the adjacent guide walls and the guide walls, the split screws having substantially the same shape can be obtained. The nut according to claim 1 or 2, wherein the female screw portion is formed by being disposed in a receiving portion . A handle of a building door to which any one of the nuts according to claim 1 is attached.

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