Slide lock nut and its unit
Patent Information
- Application Number
- JP2024570789
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2024-09-18
- Publication Date
- 2026-08-26
- Estimated Expiration
- 2044-09-18
Smart Images
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Abstract
Description
[Technical field]
[0001] The present invention relates to a sliding lock nut that can slide relative to a bolt and also functions as a normal nut. [Background technology]
[0002] A bolt is known in which a thread is formed on the outer periphery of a long rod-shaped member. On the other hand, a nut is a generally flat cylindrical member with a thread formed on the inner periphery. The nut is screwed onto the bolt and is used as a bolt nut at various construction sites. For example, a member is inserted into the bolt, and the nuts are screwed onto both sides of the bolt to clamp and fix the member with the nuts. In such a bolt nut, the pitch of the bolt and the nut are usually equal. Here, the pitch is the distance connecting the centers of adjacent threads. In other words, the bolt and the nut are formed with an equal pitch. By making the pitch equal in this way, the nut can move along the long nut by screwing it from one end of the bolt.
[0003] However, when the bolt is long, moving the bolt while screwing the nut is quite time-consuming and troublesome. Particularly in the case of a construction site, the bolt is inserted into the wall and protrudes from the wall in all directions as an anchor. In order to fix various components to the bolt, the bolt is long and nuts are used to fix the components. In this case, screwing nuts one by one onto many bolts is very time-consuming. In order to save the time and effort of moving the nut, a nut is known that is configured to split the screw hole portion so that the screw hole is enlarged (see, for example, Patent Document 1). This allows the nut to be inserted into the bolt simply by pressing it. [Prior art documents] [Patent documents]
[0004] [Patent Document 1] Japanese Utility Model Application Publication No. 49-22356 Summary of the Invention [Problem to be solved by the invention]
[0005] However, since it is necessary to return the screw hole to its original position once it has been enlarged, it is desirable to simplify this procedure.
[0006] The present invention has been made in consideration of the above-mentioned conventional technology, and has an object to provide a slide lock nut and a unit thereof which allow the nut to slide relative to a bolt, has a simple structure that allows it to function as a normal nut, and requires little effort to operate. [Means for solving the problem]
[0007] In order to achieve the above-mentioned object, the present invention provides a slide lock nut comprising: a nut body having a substantially hollow cylindrical shape; a tapered portion on the inner wall surface of the nut body which tapers in diameter towards one end; a split nut body which slides in the axial direction of the nut body along the tapered portion and has a screw thread on the inside; a locking body having a substantially hollow cylindrical shape which is disposed on the other end side of the nut body relative to the split nut body; and a pressure flange and a locking flange which are formed to extend outward from both ends of the locking body.
[0008] Preferably, the nut further includes a circular annular plate fixed to the other end side of the nut body, and a spring disposed on the outer periphery of the locking body between the circular annular plate and the pressure flange.
[0009] The present invention also provides a slide lock nut unit using a slide lock nut, comprising: a contact plate that abuts against a step portion formed and recessed inwardly at the other end side of the nut body, a support plate formed extending from both sides of the end of the contact plate, a pin whose both ends are supported by the support plate, a lock cover that rotates about the pin as a pivot axis, left and right side plates forming the lock cover and a presser plate disposed between the left and right side plates, a lock claw protruding from the abutment plate, engagement holes provided on the left and right side plates and engaging with the lock claws when the lock cover rotates and the presser plate covers the other end side of the nut body, and a notch formed by cutting out the presser plate, the notch being wider than the inner diameter of the locking body and narrower than the outer diameter of the lock flange.
[0010] Preferably, the outer shape of the nut body is polygonal, and the distance between the left and right side plates is substantially the same as the distance between the opposing side surfaces of the nut body.
[0011] Preferably, the left and right side plates have bent portions formed by bending the contact plate so as to enter grooves formed by cutting out the contact plate. Effect of the Invention
[0012] According to the slide lock nut of the present invention, when a bolt is inserted from one end side of the nut body, the split nut body moves to the other end side along the tapered portion in the radially expanding direction, and the inner diameter of the nut body expands. As a result, the bolt is inserted so as to slide inside the nut body without being screwed into the threads of the split nut body. Then, when the nut body moves to a predetermined position, the lock body is moved to one end side of the nut body, and the split nut body also moves to one end side of the nut body along the tapered portion. At this time, the split nut body moves in the radially contracting direction, so that the split nut body and the bolt engage with each other and are fixed in position. At this time, the lock flange is formed to expand outward from the lock body, so that the lock flange is easy to press with a finger. Therefore, an operator can easily move the lock body by pressing his finger against this lock flange, and at the same time, the pressure flange abuts against the split nut body, and the split nut body can be moved. With such a configuration with a lock flange, the nut body can slide relative to the bolt, and the simple structure can function as a normal nut, and the split nut body can be moved in the radially contracting direction to reduce the effort required for positioning the nut body relative to the bolt.
[0013] In addition, because there is a spring between the annular plate and the pressure flange, the split nut body is always biased toward one end of the nut body, so even if the worker releases the nut body when it has moved to a specified position, the built-in spring will move the split nut body and engage with the threads of the bolt, preventing it from falling off. This is particularly useful when the bolt is installed vertically.
[0014] Furthermore, with the slide lock nut unit of the present invention, when the lock pawl is engaged with the engagement hole, the bolt is housed in the notch of the presser plate, and this notch abuts and presses the lock flange against the other end of the nut body. This eliminates the need to keep pressing the lock flange by hand when pressing the lock flange, further improving operability.
[0015] In addition, since the distance between the left and right side plates is approximately the same as the distance between the opposing side surfaces of the nut body, the nut body cannot rotate independently, and therefore the nut body can be prevented from rotating independently within the lock cover.
[0016] Also, by inserting the bent portion into the groove, the lock cover is fixed in this position, preventing it from rotating under its own weight. This allows the operator to rotate only the nut body and move it along the bolt without having to hold the lock cover with one hand every time. This improves operability because when it is necessary to fine-tune the position of the slide lock nut unit along the bolt, it can be done by rotating only the nut body. [Brief description of the drawings]
[0017] [Figure 1] 1 is a schematic cross-sectional view of a slide lock nut according to the present invention. [Diagram 2] FIG. 2 is an exploded perspective view of the slide lock nut according to the present invention. [Diagram 3] FIG. 2 is a schematic cross-sectional view showing a state before the slide lock nut according to the present invention is inserted into a bolt. [Figure 4] 1 is a schematic cross-sectional view showing a state in which a slide lock nut according to the present invention is inserted into a bolt. FIG. [Diagram 5] 1 is a schematic cross-sectional view showing a positioning state in which a slide lock nut according to the present invention has been inserted into a bolt and moved to a predetermined position. FIG. [Figure 6] 4 is a schematic cross-sectional view showing an open state of the slide lock nut unit according to the present invention with a lock cover open. FIG. [Figure 7] 1 is a schematic diagram of a slide lock nut unit according to the present invention in an open state with a lock cover open, as viewed from the side on which the nut body is disposed. FIG. [Figure 8]10 is a schematic cross-sectional view showing a rotational state in the middle of movement of a lock cover of the slide lock nut unit according to the present invention in a closing direction. FIG. [Figure 9] 4 is a schematic cross-sectional view showing a closed state in which a lock cover of the slide lock nut unit according to the present invention is closed. FIG. [Figure 10] 1 is a schematic view of the slide lock nut unit according to the present invention in a closed state with a lock cover closed, as viewed from the side on which the nut body is disposed. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0018] As shown in Figures 1 and 2, a slide lock nut 1 according to the present invention includes a nut body 2 having a substantially hollow cylindrical shape. The inner wall surface of the nut body 2 includes a tapered portion 3 that tapers toward one end A. Therefore, the portion of the nut body 2 where the tapered portion 3 is provided is thick. A split nut body 4 is disposed within the nut body 2. The split nut body 4 has a thread formed on the inside, and a plurality of split nut bodies 4 (four in Figure 2) are disposed along the circumferential direction within the nut body 2. The outer wall surface of the split nut 4 is inclined to have the same angle as the tapered portion 3, and this inclined portion moves along the tapered portion 3, allowing the split nut body 4 to slide in the axial direction of the nut body 2.
[0019] A lock body 5 having a substantially hollow cylindrical shape is provided on the other end B side of the nut body 2 relative to the split nut body 4. Both ends of the lock body 5 are formed by bending, and a pressing flange 6 and a lock flange 7 are formed by expanding outward from each end. The lock body 5 is movable along the axial direction inside the nut body 2. A ring-shaped annular plate 8 is fixed to the other end B side of the nut body 2. A spring 9 is disposed on the outer periphery of the lock body 5 between the ring plate 8 and the pressing flange 6. Specifically, the inner wall surface of the other end B side of the nut body 2 is slightly enlarged in diameter, and the ring plate 8 is disposed here. After that, the other end B side of the nut body 2 is bent slightly inward (not bent in FIG. 1), and the ring plate 8 is accommodated and fixed in the enlarged diameter portion formed on the other end B side of the nut body 2. The inner diameter side of the ring plate 8 is formed by bending in the direction of the spring 9. The bent portion 10 restricts the lateral movement of the spring 9, and therefore the spring 9 is positioned to a certain extent in the lateral direction. The spring 9 is specifically a compression coil spring.
[0020] When manufacturing the slide lock nut 1, first the split nut body 4 is accommodated in the nut body 2, and then the lock body 5 is accommodated. At this time, the lock flange 7 is not yet formed on the lock body 5, and the side of the lock body 5 on which the lock flange 7 is formed is either straight or slightly bent, but has a diameter large enough to allow the spring 9 to slide from there later. The spring 9 is then placed on the outer periphery of the lock body 5, and the annular plate 8 is accommodated in the expanded diameter portion of the nut body 2 and fixed as described above. The end of the lock body 5 is then bent to form the lock flange 7.
[0021] The operation of the slide lock nut 1 according to the present invention will be described with reference to Figs. 3 to 5. In the pre-insertion state shown in Fig. 3, the bolt 11 is disposed on one end A side of the nut body 2. In the inserted state shown in Fig. 4, the bolt 11 is inserted from one end A side of the nut body 2. At this time, the split nut body 4 moves to the other end B side in the diameter-expanding direction along the tapered portion 3, and the inner diameter of the nut body 2 expands. As a result, the bolt 11 is inserted so as to slide inside the nut body 2 without being screwed into the thread of the split nut body 4. When the nut body 2 moves to a predetermined position, the positioning state shown in Fig. 5 is reached, and by moving the lock body 5 to one end A side of the nut body 2, the split nut body 4 also moves to one end A side of the nut body 2 along the tapered portion 3. At this time, the split nut body 4 moves in the diameter-reducing direction, so that the split nut body 4 and the bolt 11 engage with each other and the position is fixed. When the lock body 5 is moved, the lock flange 7 is formed to spread outward from the lock body 5, so the lock flange 7 can be easily pressed with a finger. Therefore, an operator can easily move the lock body 5 by pressing his or her finger against the lock flange 7. At the same time, the pressure flange 6 comes into contact with the split nut body 4, allowing the split nut body 4 to be moved.
[0022] And, since the spring 9 is provided between the annular plate 8 and the pressing flange 6, the split nut body 4 is always biased toward one end A of the nut body 2, and even if the worker releases his / her hand from the nut body 2 when the nut body 2 moves to a predetermined position (positioned state), the threads of the split nut body 4 and the threads of the bolt 11 slightly engage with each other, so the nut body 2 does not move unintentionally. This is particularly useful when the bolt 11 is disposed vertically. If the bolt 11 is vertical, the nut body 2 will fall if the split nut body 4 remains open when the worker releases his / her hand from the nut body 2. If such an effect is not required, the spring 9 and the annular plate 8 are not required. With the configuration of providing the lock flange 7 described above, the nut body 2 can slide relative to the bolt 11, and can function as a normal nut with a simple structure, and the split nut body 4 can be moved in the diameter reducing direction to reduce the time and effort required for positioning the nut body 2 relative to the bolt 11.
[0023] Next, the slide lock nut unit 12 according to the present invention will be described. As shown in Figs. 6 to 10, the slide lock nut 12 according to the present invention includes an abutment plate 14 that abuts against a step portion 13 formed on the other end B side of the nut body 2 by recessing inward. Therefore, a through hole capable of accommodating the other end B side of the nut body 2 whose diameter is reduced by the step portion 13 is formed in the abutment plate 14. Support plates 15 are formed by extending from both ends of the abutment plate 14. That is, two support plates 15 are formed. A pin 16 is bridged between the support plates 15. Both ends of the pin 16 are supported by both support plates 15. A lock cover 17 is attached to the abutment plate 14 via the pin 16. The lock cover 17 rotates around the pin 16 as a rotation axis. The lock cover 17 has left and right side plates 18 and a pressing plate 19 arranged between the left and right side plates 18.
[0024] On the other hand, a lock claw 20 protrudes from the abutment plate 14. Engagement holes 21 are formed in the left and right side plates 18. The lock claw 20 is inserted into and engaged with the engagement hole 21 when the lock cover 17 rotates and the presser plate 19 covers the other end B side of the nut body 2. Specifically, the left and right side plates 18 are pushed open slightly by hand to insert the lock claw 20 into the engagement hole 21. A notch 22 is formed in the presser plate 19. This notch 22 is formed to be wider than the inner diameter of the lock body 5 and narrower than the outer diameter of the lock flange 7.
[0025] When the slide lock nut unit 12 is inserted onto a bolt, the nut body 2 is slid onto the bolt with the step portion 13 housed in the through hole of the abutment plate 14. At this time, the slide lock nut unit 12 is in an open state with the lock cover 17 open (state in FIG. 6). Then, after the nut body 2 (slide lock nut unit 12) has moved to a predetermined position, the lock cover 17 is rotated to a rotated state (state in FIG. 8), and the lock claw 20 is engaged with the engagement hole 21 to a closed state (state in FIG. 9).
[0026] As a result, in the closed state, with the lock claws 20 engaged with the engagement holes 21, a bolt is housed in the notch 22 of the presser plate 19, and this notch 22 abuts against the other end of the nut body 2 and presses the lock flange 7. This further improves operability when pressing the lock flange 7. In other words, by changing the lock cover 17 from the open state to the closed state, the operator can have the notch 22 of the presser plate 19 press the lock flange 7, and the operator only needs to operate the lock cover 17, which is a relatively large member.
[0027] Here, the outer shape of the nut body 2 is a polygonal shape. The distance between the left and right side plates 18 is almost the same as the distance between the opposing side surfaces of the nut body 2. Therefore, in the closed state, the left and right side plates 18 restrict the nut body 2 from rotating in the direction of rotation, and the nut body 2 cannot rotate independently. Therefore, the nut body 2 can be prevented from rotating independently within the lock cover 17.
[0028] Furthermore, the left and right side plates 18 have bent portions 23 formed by bending. A groove 24 is cut out and formed in the abutment plate 14. When the lock cover 17 is further rotated upward in the open state, the bent portion 23 enters the groove 24, and the position of the lock cover 17 is locked. By locking the position of the lock cover 17 in this way, the lock cover 17 is fixed at this position, and the lock cover 17 can be prevented from rotating due to its own weight. This allows the operator to rotate only the nut body 2 to move the lock cover 17 along the bolt without having to hold it with one hand every time. This improves operability because the nut body 2 can be rotated only when the slide lock nut unit 12 is to be finely adjusted in position along the bolt. Also, when the slide lock nut unit 12 is to be slid relative to the bolt, it is convenient because it is easy to slide if the lock cover 17 is positioned.
[0029] In addition, members of various shapes may be formed to extend from the contact plate 14. In the example shown in the figure, a ceiling hanger 25 is formed to extend integrally. [Explanation of symbols]
[0030] 1: slide lock nut, 2: nut body, 3: tapered portion, 4: split nut body, 5: lock body, 6: pressure flange, 7: lock flange, 8: annular plate, 9: spring, 10: bent portion, 11: bolt, 12: slide lock nut unit, 13: step portion, 14: contact plate, 15: support plate, 16: pin, 17: lock cover, 18: left and right side plates, 19: pressing plate, 20: lock claw, 21: engagement hole, 22: cutout portion, 23: bent portion, 24: groove, 25: ceiling hanger, A: one end of the nut body, B: the other end of the nut body
Claims
1. A nut body with a roughly hollow cylindrical shape, The inner wall surface of the nut body has a tapered portion that is narrowed in diameter towards one end, A split nut body having threads on the inside, which slides axially along the tapered portion of the nut body, A substantially hollow cylindrical locking body is positioned on the other end side of the nut body relative to the split nut body, The locking body comprises a pressing flange and a locking flange that extend outward from both ends, A ring-shaped annular plate fixed to the other end of the nut body, A slide lock nut further comprising a spring disposed between the annular plate and the pressing flange and on the outer circumference of the locking body.
2. A contact plate that abuts against a stepped portion formed inwardly at the other end of the nut body, Support plates are formed extending from both ends of the relevant connecting plate, The pins are supported at both ends by the support plate, A lock cover that rotates with the pin as the pivot point, The left and right side plates forming the lock cover and the retaining plate positioned between the left and right side plates, A locking claw protruding from the aforementioned contact plate, The left and right side plates are provided with engagement holes that engage with the locking claw when the lock cover rotates and the retaining plate covers the other end of the nut body, A slide lock nut unit using the slide lock nut according to claim 1, characterized in that it comprises a notch formed by cutting out the retaining plate, which is wider than the inner diameter of the lock body and narrower than the outer diameter of the lock flange.
3. The slide lock nut unit according to claim 2, characterized in that the outer shape of the nut body is polygonal, and the distance between the left and right side plates is substantially the same as the distance between the opposing sides of the nut body.
4. The slide lock nut unit according to claim 2, characterized in that the left and right side plates have bent portions formed by bending them so as to fit into grooves formed by cutting out the contact plate.