JP3121944U - Chain latch and its mounting structure - Google Patents

Abstract

[PROBLEMS] To fix a chain connecting portion in a desired direction even if it is fixed by being screwed into a mounting surface such as a wall surface, and has excellent followability with respect to swinging of the chain. An object is to provide a chain latch.
A chain connecting part 3 formed in a substantially U-shape is detachably and swingably assembled to a pedestal 4 and a mounting for fixing the pedestal 4 to a mounting surface. The pedestal 4 includes an insertion hole 4m through which the mounting bolt 6 is inserted so as to be freely rotatable.
[Selection] Figure 5

Description

  The present invention relates to, for example, a chain hook used for hooking a chain that prevents entry of a vehicle to a wall surface of a building, a column, or the like, and a mounting structure thereof.

  Generally, a chain is suspended between the columns to prevent the vehicle from entering, and the end of the chain suspended in this way is the column or the wall of the building. It is locked on. Conventionally, as a connecting tool used for hooking such a chain, an eyebolt, a connecting metal fitting having a shackle fixed to the front surface of a rectangular metal plate surface, and the like are known.

  As said well-known coupling metal fitting, there exists an eyebolt as described in Unexamined-Japanese-Patent No. 2002-89039 (patent document 1), for example. In the internal manufacturing process of the half-PC plate, the eyebolt is set in advance with a separator having a long nut to which the P-con insert metal fitting is attached later, and the P-con insert metal fitting is screwed into the long nut when the frame is assembled. It is attached to the inner thread portion of the P-con insert metal fitting with a weigh plate interposed therebetween. And such an eyebolt is normally comprised integrally from the ring-shaped part (chain connection part) and the screw part like the thing of Unexamined-Japanese-Patent No. 2001-99123 (patent document 2), The screw portion is fixed to the mounting surface such as the wall surface by screwing the screw portion into the mounting surface such as the wall surface.

JP 2002-89039 A JP 2001-99123 A

  However, since the screw portion and the ring-shaped portion are integrally configured in the eyebolt having the above-described configuration, the ring-shaped portion is desired when the screw portion is completely screwed into the wall surface. There is a case where it is not positioned in the direction. In addition, since the threaded portion and the ring-shaped portion are integrally formed, when the chain is hooked, the movement in the vertical direction is limited and the followability to the swinging of the chain may be lacking. .

  The present invention has been made in view of such circumstances, and even if it is fixed by screwing into a mounting surface such as a wall surface, the ring-shaped portion (chain connecting portion) is positioned in a desired direction. Another object of the present invention is to provide a chain stopper and an attachment structure thereof that are excellent in followability with respect to swinging of the chain and the like.

  The chain latch according to claim 1 is a chain latch main body in which a chain connecting portion formed in a substantially U shape is assembled to the base so as to be detachable and swingable. And the mounting base is formed with an insertion hole through which the mounting bolt is inserted in a freely swingable manner.

  In the chain latching device according to claim 1, since an insertion hole through which the mounting bolt is inserted in a freely swingable manner is opened in the base of the chain latching device, the chain latching device is When the mounting bolt is secured to the mounting surface such as the wall surface, the pedestal can be mounted at a desired rotational position, and the chain connecting portion is assembled to the pedestal so as to be swingable. It is possible to follow movement and the like.

  The chain latch according to claim 2, wherein the pedestal is provided with a support wall on both side ends, and a shaft hole is formed in the support wall through which a support shaft for supporting both ends of the chain connecting portion is inserted. In addition, a spiral is engraved in one of the shaft holes, while a spiral strip is provided at the tip of the support shaft, and an insertion larger in diameter than the shaft diameter of the support shaft established at both ends of the chain connecting portion. The support shaft is inserted into the hole, the support shaft is screwed into the support wall and assembled, and an insertion hole for inserting the mounting bolt is formed at a substantially central portion of the pedestal. The mounting bolt is formed so as to be inserted so as to be freely rotatable.

  In the chain latching device according to claim 2, an insertion hole for inserting the mounting bolt is made larger in diameter than the shaft diameter of the mounting bolt at a substantially central portion of the base of the chain latching device. Since the mounting bolt is formed so that the mounting bolt can be freely rotated, the pedestal is moved to a desired rotational position when the chain stopper is fixed to a mounting surface such as a wall surface by the mounting bolt. In addition, a support wall is erected at both end portions of the pedestal, and a shaft hole is formed in the support wall to insert a support shaft that supports both ends of the chain connecting portion. On one side, a spiral is engraved, while a spiral strip is provided at the tip of the support shaft, and the support is inserted into an insertion hole having a diameter larger than the shaft diameter of the support shaft provided at both ends of the chain connecting portion. A shaft is inserted and the support shaft is screwed into the support wall and assembled. Since, the chain connecting portion is swingable relative to the base, it is possible to follow the swinging of the chain or the like. Furthermore, since the support shaft which supports the both ends of the said chain connection part is assembled | attached with respect to the said base so that attachment or detachment is possible, workability becomes good.

  The chain latch according to claim 3 is the chain latch according to claim 1 or 2, and guides the curved portion of the chain to be latched in the thickness direction of the curved portion of the chain connecting portion. A low step portion is formed.

  In the chain latching device according to claim 3, in addition to the chain latching device according to claim 1 or 2, the chain latching device is provided with a latching portion at a lower step portion formed at the curved portion (front end portion) of the chain connecting portion. The end of the chain to be guided is guided and anchored. At this time, even if there is a slight difference in the oval shape of the chain to be hooked and its size, the chain can be favorably and smoothly anchored.

  The chain latch according to claim 4 is the chain latch according to any one of claims 1 to 3, wherein the one support wall in which the head of the support shaft is accommodated is the head of the support shaft. It is characterized in that it is formed with a recessed step part for immersing the material.

  In the chain latch according to claim 4, in addition to the chain latch according to any one of claims 1 to 3, the protruding portion is eliminated in the assembled state of the support shaft. Will increase.

  The chain latch according to claim 5 is the chain latch according to any one of claims 1 to 4, wherein the support shaft is a bottomed hole on a top surface of the head of the support shaft, A substantially star-shaped wrench operating hole having a protrusion at the center of the bottom is formed.

  In addition to the chain latch in any one of Claim 1 thru | or 4, in the chain latch of Claim 5, it is for exclusive use corresponding to the substantially star-shaped wrench operation hole which has a protrusion in the bottom center. Only by using a wrench, the support shaft can be attached and detached, and crime prevention can be improved.

  The chain latch according to claim 6 is the chain latch according to any one of claims 1 to 5, wherein the pedestal has a concave step portion into which the head of the mounting bolt is inserted into the bolt insertion hole. It is formed by communicating.

  In the chain latching device according to claim 6, in addition to the chain latching device according to any one of claims 1 to 5, the head of the mounting bolt is immersed in the concave step portion, so that the chain If the connecting portion is not removed, the mounting bolt cannot be removed, and crime prevention can be further improved.

  The chain latch mounting structure according to claim 7 can be screwed to the chain latch according to any one of claims 1 to 6 and the mounting bolt tip of the chain latch. A mounting member that expands in diameter according to the screwing of the mounting bolt.

  In addition to the chain latch in any one of Claims 1 thru | or 6, in addition to the chain latch in any one of Claim 1 thru | or 6, it is fixed firmly to a mounting surface. It is possible to achieve excellent adhesion to the mounting surface.

  According to the chain latch according to claim 1, a chain latch main body in which a chain coupling portion formed in a substantially U shape is assembled to the base so as to be detachable and swingable, and the base A mounting bolt for fixing the mounting bolt to the mounting surface, and the pedestal has an insertion hole through which the mounting bolt is inserted so that it can rotate freely. When fixed to the surface, the pedestal can be attached at a desired rotational position, and can follow a chain swing or the like.

  According to the chain latching device according to claim 2, the pedestal is provided with support walls on both side end portions, and the support walls have shaft holes through which support shafts for supporting both ends of the chain connecting portion are inserted. One of the shaft holes is engraved with a swirl, while the support shaft is provided with a spiral at the tip, and is larger than the shaft diameter of the support shaft opened at both ends of the chain connecting portion. The support shaft is inserted into the insertion hole, the support shaft is screwed into the support wall and assembled, and an insertion hole for inserting the mounting bolt is formed in the substantially central portion of the pedestal. Since the mounting bolt is formed so as to be inserted in a freely swingable manner than the shaft diameter, when the chain stopper is fixed to a mounting surface such as a wall surface by the mounting bolt, The pedestal can be mounted at a desired rotational position, and the chain Connecting portion is swingable relative to the base, it is possible to follow the swinging of the chain or the like. Furthermore, since the support shaft which supports the both ends of the said chain connection part is assembled | attached with respect to the said base so that attachment or detachment is possible, workability becomes good.

  According to the chain latching device according to claim 3, in the thickness direction of the curved portion of the chain connecting portion, the lower step portion that guides the curved portion of the chain to be latched is formed. There is a slight difference in the oval shape and the size of the chain that is hooked when guiding and anchoring the end of the chain to be hooked to the lower step formed on the curved part (front end) of the chain connecting part. Even if there is, there is good and smooth tethering.

According to the chain latch according to claim 4, the one support wall in which the head portion of the support shaft is accommodated forms a concave step portion into which the head portion of the support shaft is immersed. In the assembled state of the support shaft, the protruding portion is eliminated and the safety is improved.
It improved and this head no longer interferes with wiping.

  According to the chain latch according to claim 5, the support shaft is a bottomed hole on the top surface of the head of the support shaft, and a substantially star-shaped wrench operation hole having a protrusion at the center of the bottom surface. Therefore, the support shaft can be attached and detached by using a dedicated wrench corresponding to the substantially star-shaped wrench operating hole having a protrusion at the center of the bottom surface, and crime prevention can be improved.

  According to the chain latch according to claim 6, since the pedestal is formed with a concave step portion into which the head of the mounting bolt is inserted and communicated with the bolt insertion hole, the head of the mounting bolt The part is immersed in the pedestal surface, and unless the chain connecting part is removed, the mounting bolt cannot be removed, and the security can be further improved.

  According to the attachment structure of the chain latch according to claim 7, the chain latch according to any one of claims 1 to 6, and the mounting bolt tip of the chain latch can be screwed. In addition, since the mounting member is provided with a mounting member that expands in accordance with the screwing of the mounting bolt, the workability is further improved and the mounting surface can be firmly fixed, and the fixing property to the mounting surface is excellent. .

  Hereinafter, the best mode for carrying out the present invention will be specifically described with reference to the drawings.

  1 is a perspective view of the chain latch and the mounting member, FIG. 2 is a plan view thereof, FIG. 3 is a side view thereof, and FIG. 4 is a front view thereof.

  1 to 4, reference numeral 1 denotes a chain hook according to the present invention, and the chain hook 1 protrudes forward from both side end portions of a substantially truncated cone-shaped base 4. A chain latch body 2 in which both ends 3a and 3a of a chain connecting portion 3 formed in a substantially U shape are fitted and assembled to a support shaft 5 inserted through 4d and 4g, and the chain latch It is comprised from the mounting | wearing volt | bolt 6 which fixes the main body 2 to a mounting surface.

  The chain latch 1 is composed of a cylindrical nut 7 screwed to the tip of the mounting bolt 6 and an anchor half cylinder member 8 for holding the cylindrical nut 7 in the cylinder. It is fixed to the mounting surface by the member.

  FIG. 5 is an exploded perspective view of the chain latch and the mounting member, FIG. 6 (a) is a plan view of the pedestal, (b) is a side view, and (c) is a side cross-sectional view. (D) is a front view of the same.

  As shown in FIGS. 5 and 6A to 6D, both end portions 3a and 3a of the chain connecting portion 3 are provided with support shaft insertion holes 3b and 3b into which the shaft portion 5a of the support shaft 5 is inserted. Opened opposite.

  The pedestal surface 4a that forms the base of the pedestal 4 has a thick metal plate shape with a circular outer periphery that becomes slightly smaller in diameter toward the front edge, and a mounting bolt is provided at the center of the pedestal surface 4a. A circular concave step portion 4k into which the head portion 6b of 6 is immersed is formed integrally with a bolt insertion hole 4m in front thereof. The mounting bolt 6 is composed of a shaft portion 6a and a head portion 6b at the tip thereof, and a hexagonal hole 6c is formed in the central surface of the head portion 6b.

  Each of the support portions 4d and 4g has an outer surface formed by an arc surface along the upper end edge of the pedestal surface 4a, and each upper end edge formed in an elliptical arc shape. A circular concave step 4e into which the head 5b of the support shaft 5 is immersed is formed in one of the support portions 4d together with a support shaft insertion hole 4f in front of the support shaft 4d. Has a screw hole 4h into which the tip of the support shaft 5 is screwed. The lower portions of the support portions 4d and 4g are formed thicker in the inner direction for reinforcement, and the upper middle portions 4n and 4n formed thereby are connected to the chain connecting portion 3. Are formed with curved surfaces so that the outer peripheral surfaces of both end portions 3b, 3b do not come into contact with each other.

  The cylindrical nut 7 is formed such that the outer diameter of the rear portion 7b is larger than the outer diameter of the front portion 7a, the outer peripheral surface of the central portion 7c is tapered, and the central portion 7c faces the rear end portion. A number of anti-slip ridges 7d are provided over the entire circumference.

  The anchor half cylinder 8 is formed of lead material, and is formed so that the inner diameter of the front portion 8a is slightly larger than the outer diameter of the front portion 7a of the cylindrical nut 7. A number of notches 8b, 8b extending from the closest part to the rear end are formed at equal intervals in the circumferential direction, and a surface between the notches 8b, 8b is formed as a wing 8c. Non-slip uneven portions 8d are formed on the outer surfaces of the portions 8c and 8b.

  FIG. 7 is an enlarged partial plan sectional view showing a state in which the chain connecting portion is assembled to the base. As shown in FIG. 7, when assembling the chain connecting portion 3 to the pedestal 4, both end portions 3a, 3a of the chain connecting portion 3 are positioned between the support portions 4d, 4g so that the support shaft 5 Is inserted into the support shaft insertion hole 4f formed in the one support portion 4d toward the screw hole 4g formed in the other support portion 4g. 5a is inserted into the support shaft insertion holes 3b, 3b formed in the both end portions 3a, 3a, and then the tip of the support shaft 5 is formed in the other support portion 4g. This is performed by screwing into the screw hole 4g.

  When assembled as described above, both end portions 3a and 3a of the chain connecting portion 3 are swingably mounted around the support shaft 5 mounted between the support portions 4d and 4g. The head 5 of the support shaft 5 is immersed in a recessed step portion 4f formed in one of the support portions 4d. Therefore, the support shaft 5 after mounting is used with a clamping tool such as pliers and pliers. Cannot be removed.

  FIG. 8 is an enlarged perspective view of the head of the support shaft and a dedicated wrench. In FIG. 8, 5b is the head of the support shaft 5, and 10 is a dedicated wrench. A substantially star-shaped wrench insertion hole 5d having a protrusion 5c at the center of the bottom surface is formed on the center surface of the head 5b of the support shaft 5. The dedicated wrench 10 for operating the support shaft 5 has a tip 10a having a shape corresponding to the wrench entry hole 5d. I can't do it.

  In order to fix the chain stopper 1 configured as described above to a mounting surface such as a wall surface, for example, using the mounting member (the cylindrical nut 7 and the anchor half tubular member 8), It is fixed by the procedure described in

  First, as shown in a perspective view showing a state in which the attachment member is inserted into the wall surface of FIG. 9, before fixing the chain hook 1 to the wall surface W, the attachment member is attached to the wall surface W in advance in accordance with the fixing position. The drill hole Wa for inserting (the cylindrical nut 7 and the half tubular member for anchor 8) is opened. Then, as shown in a cross-sectional view showing a state in which the half tubular member for anchor holding the nut is inserted into the drill hole drilled in the wall surface of FIG. 10, the mounting member (the cylindrical nut is inserted in the drill hole Wa). 7 and the anchor half cylinder 8) are inserted.

  Next, as shown in a plan sectional view showing a state in which the pedestal of FIG. 11 is fixed to the wall surface, the pedestal 4 of the chain hook body 2 disassembled in advance is fixed to the wall surface W.

  In this case, as shown in FIG. 11, the mounting bolt 6 is inserted into the bolt insertion hole 4m formed in the center surface of the base 4, and the tip of the mounting bolt 6 is inserted into the drill hole Wa. The mounting nut 6 is screwed into the cylindrical nut 7 inserted therein and tightened with a hexagon wrench (not shown). As a result of this tightening, the cylindrical nut 7 enters the anchor half tubular member 8, expands the diameter of each wing 8c, 8c of the anchor half tubular member 8, and presses against the inner wall of the drill hole Wa. Then, the mounting member (the cylindrical nut 7 and the anchor half cylinder 8) is fixed in the drill hole Wa. At this time, since the mounting bolt can be freely rotated with respect to the bolt insertion hole 4m, the base 4 can be attached at a desired rotational position when the base 4 is fixed to the wall surface W. .

  Next, as shown in a plan sectional view showing a state in which the chain hook main body of FIG. 12 is fixed to the wall surface, the chain 4 is attached to the base 4 fixed to the wall surface W by using the support shaft 5. Assemble both ends of the connecting portion 3 so as to be swingable. In this case, a chain may be inserted into the chain connecting portion 3 in advance.

  And when fixing the said base 4 to the said wall surface W, when it attaches so that the support shaft 5 of the said base 4 may become horizontal, the side surface which shows the state which the chain connection part of FIG. As shown in the figure, the chain connecting portion 3 can swing within a range of about 180 degrees in the vertical direction with the support shaft 5 as a fulcrum. Therefore, even when the chain swings in the vertical direction due to an external force, the chain connecting portion 3 can follow the swing of the chain, and can reduce the external force transmitted to the mounting member and the like. It will be excellent.

  FIG. 14 is a side view showing a state in which the chain hook body is hooked on the chain, and FIG. 15 (a) is a front view showing a state in which the chain hook body is hooked on the chain. (b) is a partial plan view showing the tip of the chain connecting portion, and (c) is a front view of the same.

  As shown in FIGS. 14 and 15 (a) to 15 (c), when the tip portion Ta of the chain T is to be hooked on the chain hook main body 2, the chain connecting portion 3 is temporarily detached from the pedestal 4. The removed chain connecting portion 3 is inserted into the end portion Ta of the chain T, and the chain connecting portion 3 is assembled to the base 4. At this time, since the low step portions 3s, 3s are formed in the thickness direction of the tip portion 3c of the chain connecting portion 3, the end portion of the chain T to be hooked is connected to the low step portion 3s, Even when there is a slight difference in the oval shape of the chain T to be hooked and its size when the chain T is guided and anchored in 3s, the chain T can be anchored satisfactorily and smoothly. In FIG. 3, the chain connection portion 3 is better fitted.

1 is a perspective view showing a chain latch according to an embodiment of the present invention. It is also a plan view. It is a side view similarly. It is also a front view 1 is an exploded perspective view of a chain latch according to an embodiment of the present invention. (A) is a plan view of the pedestal, (b) is also a side view, (c) is a side sectional view, and (d) is a front view. It is an expanded partial plane sectional view which shows the state which attached the chain connection part to the base. It is an expansion perspective view which shows the head of a support shaft, and the wrench for exclusive use corresponding to this. It is a perspective view which shows the state before driving the half cylinder material for anchors which hold | maintained the nut in a wall surface. It is a top sectional view showing the state after driving the half cylinder material for anchors which held the nut in the drill hole of the wall surface. It is a plane sectional view showing the state where the base was attached to the wall surface. It is a top sectional view showing the state where the chain hook main part is attached to the wall surface. It is a side view which shows the rocking | fluctuation state of a chain connection part. It is a side view of a state where the chain is hooked on the chain hook body. (A) is a front view which shows the state which latched the chain to the chain latching tool main body, (b) is a top view which shows the front-end | tip part of a chain connection part, (c) is the same front view. .

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Chain latch body 2 Chain latch body 3 Chain connection part 3a, 3a Both ends 3b Bolt insertion hole 3c Tip part 3s Low step part 4 Base 4a Base surface 4d Support part 4e Concave step part 4f Support shaft insertion hole 4g Support Part 4k Concave step part 4h Screw hole 4m Bolt insertion hole 4n Step part upper surface part 5 Support shaft 5a (Support shaft 5) shaft part 5b (Support shaft 5) head part 5c Projection part 5d Wrench entry hole 6 Mounting bolt 6a Shaft 6b (of mounting bolt 6) Head 6c (of mounting bolt 6) Hexagonal hole 7 Cylindrical nut 7a Front 7b (of cylindrical nut 7) Rear 7c (of cylindrical nut 7) Center 7d Concave and convex strip 8 (for cylindrical nut 7) Half tube member 8a for anchor Front portion 8b (for half tube member 8 for anchor) Notch 8c (for half tube member 8 for anchor) (half tube member for anchor) 8) Wings 8d (of the anchor half-tube 8) Convex 10 wrench 10a (wrench 10) tip W walls Wa drill holes

Claims (7)

A chain connecting portion formed in a substantially U-shape with a chain connecting portion assembled to be detachable and swingable with respect to the pedestal, and a mounting bolt for fixing the pedestal to a mounting surface. A chain stopper characterized by having an insertion hole through which the mounting bolt is inserted in a freely swingable manner.
The pedestal is provided with supporting walls at both ends, and a shaft hole is formed in the supporting wall through which a supporting shaft for supporting both ends of the chain connecting portion is inserted. On the other hand, a spiral strip is provided at the tip of the support shaft, and the support shaft is inserted into insertion holes having a diameter larger than the shaft diameter of the support shaft provided at both ends of the chain connecting portion. And screwed into the support wall and assembled,
In the substantially central part of the pedestal, an insertion hole for inserting the mounting bolt is formed larger in diameter than the shaft diameter of the mounting bolt so that the mounting bolt can be inserted freely. The chain latch according to claim 1,
The chain hooking device according to claim 1 or 2, wherein a low step portion for guiding the curved portion of the chain to be hooked is formed in the thickness direction of the curved portion of the chain connecting portion.
The chain hook according to any one of claims 1 to 3, wherein one of the support walls in which the head of the support shaft is accommodated is formed with a concave step portion for immersing the head of the support shaft. Stopper.
5. The support shaft is formed with a substantially star-shaped wrench operating hole having a bottomed hole on the top surface of the head of the support shaft and having a protrusion at the center of the bottom surface. The chain latch according to any one of the above.
The chain hook according to any one of claims 1 to 5, wherein the pedestal is formed with a recessed step portion into which a head portion of the mounting bolt is inserted to communicate with a bolt insertion hole.
The chain latch according to any one of claims 1 to 6, and a mounting member that can be screwed to a tip end portion of the mounting bolt of the chain latch and expands in diameter in accordance with the threading of the mounting bolt. And a structure for attaching a chain stopper.

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