JPH08284404A - Hanging clamp - Google Patents

Abstract

PURPOSE: To eliminate the need to use a tool and surely and quickly mount/ demount a hang clamp on a rod material by parallelly providing a groove in the rod material to select a contact portion with the rod material and accurately holding the rod material in the condition that it is fitted to the structure of a holding member. CONSTITUTION: A rod material holding member 1 has an upper collar 2 formed by shortening one end of a U-shaped portion and a lower collar 3 formed by trending the other end inside. Then, two rough portions 5 are arranged in symmetry with the U-shaped angular portion 4 of the upper collar 2 and a rod material thrusting portion 6 is arranged in opposition to the outside rough portion 5. The lower collar 2 is connected to another member 17 provided outward time U-shaped portion with a connecting member 15 at the opposite position of the angular portion 4. A contact portion protecting member 11 is provided on the opening side of a holding member 1 to keep the life of a hanging clamp in combination with the structure of a contact portion 7. A fastener 9 for the rod material thrusting portion is formed into a disc shape with a diameter of 45-55mm. In this way, fastening is completed with at least one turn, resulting in more working efficiency.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hang clamp which is useful in the field of construction, particularly in the assembly of stage equipment.

[0002]

2. Description of the Related Art Conventionally, wire rods and clamps have been used for assembling temporary scaffolds for constructing buildings such as the stage outdoors or indoors, but tools such as ratchets and spanners have been used to compact the clamps. Had to be used and required a great deal of time to set up and remove.

When installing or suspending temporary lighting pipes, temporary curtains or temporary rails in a theater,
The same construction work as above was required, and this also required a great deal of work time.

[0004] Also, the hanging operation of the sleeve curtain and the tool curtain is done by a method of tying each one with a string, but especially in the work of hanging the tool curtain, for example, a string is laid at a pitch of 30 cm at a width of 18 meters. Since it is attached, the work of connecting to each one here requires a lot of labor and time.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a hang clamp that can be surely and quickly attached to and detached from a rod-like object without using a tool such as a ratchet or a spanner.

A second object of the present invention is to provide a hang clamp which can be attached to and detached from a rod-like object by tightening the disc-shaped screw fastener once with one hand.

A third object of the present invention is to provide a stage hang clamp useful for attaching or suspending temporary lighting pipes, temporary sleeves, temporary tool curtains or temporary rails on the stage.

[0008]

According to the present invention, there is provided (a) a U-shaped member in which one of the upper jaws has a shorter tip and the other has a slightly bent inner portion. A bar-shaped object gripping member composed of a lower jaw provided at a position facing the upper jaw, (b) two concavo-convex portions provided symmetrically with respect to the U-shaped corner of the upper jaw,
(C) A pressing member for a rod-shaped object provided on the U-shaped member at a position facing the outer uneven portion of the uneven portion, (d) a corner of the upper jaw portion in the lower jaw portion In a hang clamp comprising a connecting member for connecting to another member provided in a U-shaped outward direction at a position facing the section, the rod-shaped object pressing portion in (c) above is a rod-shaped member. A contact portion for a rod-shaped object having a groove formed at a position parallel to the longitudinal direction of the object, a disk-shaped screw fastener having a diameter of 45 to 55 mm provided outside the gripping member and facing the contact portion, and the contact Both ends of the central portion of the portion and the disc-shaped screw fastener are fixed to each other, and the gripping member comprises a threaded rod engaged with the screw, and (e) the contacting member opening side of the contact portion. A hang club characterized by comprising a contact member protection member provided on the On-flops.

In the conventional hang clamp, a groove is provided at a position where a contact portion of the pressing portion (c) for a rod-shaped object of the present invention with the rod-shaped object is parallel to the longitudinal direction of the rod-shaped object (7 and 8 in FIG. 1). On the other hand, since the shape of the contact portion was all dish-shaped or bowl-shaped, the contact area with the rod-shaped material was lacking, and stable securing of the rod-shaped material was insufficient.

Since the conventional fastener for pressing the rod-shaped pressing portion against the rod-shaped object is a butterfly-shaped fastener as shown in FIGS. 1 and 2, even if the butterfly-shaped fastener is rotated once, a screw is used. One stick
Since it only rotates, the pressing portion for the rod-shaped object had to be rotated many times in order to press and fix it on the rod-shaped object, whereas the one of the present invention was ergonomically studied, He decided to use a disc-shaped screw fastener with a diameter of 45 to 55 mm that fits most easily in human hands and can be tightened within one rotation. The best mode is a diameter of 50 mm, and when the size of the diameter changes around it, the feel when it fits in the human hand is slightly different, and when the diameter is in the range of 45 to 55 mm, tightening is within the convenient rotation range. Is complete, and the hand is in a good fit.

As the screw rod, a commercially available screw rod having a diameter of about 9 mm is used, and if the diameter is made larger, the screw rod can be moved forward and backward by one rotation. The diameter of the disk-shaped screw fastener is in the range of 45 to 55 mm, particularly preferably 4 because
The range is 9 mm to 51 mm.

It is preferable to provide an uneven portion 12 for preventing slippage on the outer periphery of the disk-shaped screw fastener so that the end 13 of the disk-shaped screw fastener is rounded. It is preferable that the part does not hurt the hand.

The position of the rod-shaped pressing portion which is provided so as to face the concave-convex portion is such that the two concave-convex portions (b) (5 in FIG.
In 5 '), it is preferable that a line is drawn from the center of the uneven portion 5 from the U-shaped tip through the center of the rod-shaped object. As a result, the rod-like object is stably and firmly held in the grip member.

Of the two concavo-convex portions, the rod-shaped pressing portion is provided at one of the opposing portions, and the connecting member with another member is provided at the other opposing portion. Since it is preferable to provide the portion at the most stable position, it is preferable to provide the connecting member at the opposite location of the corner 4 of the upper jaw.

The contact portion which constitutes a part of the above-mentioned (c) rod-shaped pressing portion is in a state of protruding into the holding member. The work of connecting the hang clamp to the rod-shaped object is often performed at a high place where the scaffold is unstable, and since the rod-shaped object is stored in the holding member with a feeling that the hang clamp is hammered toward the rod-shaped object, The contact portion protruding into the member is in a state of being hit with a rod-like object without any protection, and is very susceptible to damage. Therefore, the presence of the contact part protection member (d) is indispensable.

The structure of the connecting member may be any structure as long as it can be connected to other members. The simplest method is to cut a screw on a holding member for a rod-shaped object, attach a screw, and connect the member to another member via this screw.

The width of the gripping member for a rod-shaped object which is a U-shaped member is 20 to 35 mm, preferably 25 to 32 mm, particularly preferably 28 to 31 mm. If the width is too narrow, not only is it ergonomically difficult to handle, but it is also necessary to select an expensive material in order to secure the strength as a gripping member, and the contact surface for securing the rod-shaped object is reduced, which is preferable. Absent. If the width is too wide, it is ergonomically unwieldy and unfavorable. The thickness of the rod-shaped gripping member depends on the size of the width.

The constituent material of the present invention including the gripping member for a rod-shaped material is not particularly limited as long as it can exhibit the required strength, but usually aluminum, iron, brass or the like is preferable.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention is shown in FIGS.
FIG. 1 is a side view (partially sectional view), and FIG. 2 is a perspective view. In the figure, 14 is a place where a rod-shaped object for hanging an awning on a stage or the like is inserted and fixed, and the protrusions and recesses 5 and 5'provided on the upper jaw 2 and the rod-shaped object pressing portion 6 are provided.
It is secured by the contact portion 7 in. The contact portion 7 can firmly fix the rod-shaped object 14 or release the rod-shaped object by releasing contact by rotating the disk-shaped screw fastener 9 having a diameter of 50 mm within a range of one rotation. it can. FIG.
In addition, the grip portion of the product of this embodiment, in which the dimensions of this embodiment are shown in mm, is made of aluminum with a width of 30 mm and a thickness of 10 mm. With this, it was possible to withstand a tensile load of 100 kgf. . When the tensile load was 200 kgf, it was slightly deformed. In order to be able to withstand a tensile load higher than this, it can be achieved by means such as further increasing the wall thickness or changing the material from aluminum to iron. In the figure, reference numeral 15 is a connecting portion fixed to the lower jaw by means such as screws, screws, or welding, and 16 is a connecting portion 15
And a fixing screw for fixing the connection with the other member 17.

The embodiments of the present invention are listed below. 1. (A) A lower jaw part formed of a U-shaped member, one upper end part of which is shortened and the other end part of which is bent slightly inward, and which is provided at a position facing the upper jaw part. A gripping member for a rod-shaped object, (b) two concavo-convex portions provided at symmetrical positions with respect to the U-shaped corners of the upper jaw, (c) on the U-shaped member ,
Of the concavo-convex portion, a rod-shaped pressing portion provided at a position facing the outer concavo-convex portion, (d) at a position facing the corner of the upper jaw portion in the lower jaw portion, and outward of the U-shape. In a hang clamp composed of a connecting member for connecting with another member provided in the opposite direction, the pressing portion for a rod-shaped object of (c) has a groove provided in a position parallel to the longitudinal direction of the rod-shaped object. A contact portion for a rod-shaped object, a disk-shaped screw fastener having a diameter of 45 to 55 mm provided outside the gripping member and facing the contact portion, both ends of the center portion of the contact portion and the disk-shaped screw fastener. Is fixed, and is composed of a threaded rod engaged with the gripping member by a screw, and further comprises (e) a contact part protection member provided on the gripping member opening side of the contact part. And a hang clamp. 2. 2. The hang clamp according to item 1, wherein the diameter of the disc-shaped screw fastener is in the range of 49 to 51 mm. 3. The hang clamp according to 1 or 2 above, wherein, in the disc-shaped screw fastener, a non-slip unevenness is provided on the outer periphery of the disc. 4. The hang clamp according to the above item 1, 2 or 3, wherein the end portion of the disc is rounded. 5. 5. The hang clamp according to the above item 1, 2, 3 or 4, wherein the width of the grip member for the rod-shaped object is 28 to 31 mm. The above 1, 2, 3, 4 which is for stage composition
Or the hang clamp according to item 5.

[0021]

[Effects] In the present invention, by selecting the contact portion for the rod-shaped object in which the groove is provided at a position parallel to the longitudinal direction of the rod-shaped object, the rod-shaped object can be accurately grasped by matching well with the structure of the grasping member, and There is little pain in the contact area. Since the contact part protection member is provided on the opening side of the gripping member, the contact part will not be directly hit on the rod-shaped object even if the opening part is hit on the rod-shaped object for mounting work. The life of the hang clamp is not shortened in combination with the structure of. Generally, it has a usage period that is more than twice that of conventional products. The fastener for the rod-shaped pressing part of the hang clamp has a diameter of 4
The disc shape of 5 to 55 mm allows it to fit comfortably in the human hand, and the tightening is completed within one rotation, which is extremely efficient.

[Brief description of drawings]

FIG. 1 is a side view (partially sectional view) of a hang clamp according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a hang clamp according to the first embodiment of the present invention.

[Explanation of symbols]

 1 gripping member for rod-like object 2 upper jaw part in gripping member 3 lower jaw part in gripping member 4 corner part in upper jaw part in gripping member 5 uneven portion 5'provided in upper jaw part in gripping member 5'provided in upper jaw part in gripping member Concavo-convex portion 6 Pushing portion for rod-shaped object 7 Contact portion in pressing portion for rod-shaped object 8 Groove provided in the contact portion 9 Disc-shaped screw tightening tool in pushing portion for rod-shaped object 10 Screw rod in pressing portion for rod-shaped object 11 Said Contact protection member provided on the outside of the contact part 12 Anti-slip concavo-convex part 13 Disc-shaped screw fastener end part radius 14 Position where rod-shaped object is to be inserted 15 Connection member 16 Connection fixing screw 17 Other members

Claims (1)

[Claims] 1. (a) An upper jaw part formed of a U-shaped member, one end of which is shortened, and the other end of which is bent slightly inward so that it is located at a position facing the upper jaw. A bar-shaped object gripping member including a lower jaw provided, (b) two concavo-convex portions provided symmetrically with respect to the corner of the U-shape in the upper jaw, (c) the U-shape A rod-shaped pressing portion provided on the member at a position facing the outer concave-convex portion of the concave-convex portion, and (d) at a position facing the corner of the upper jaw in the lower jaw. In a hang clamp, which comprises a connecting member for connecting to another member provided in the shape of the letter, the rod-shaped pressing portion of (c) is parallel to the longitudinal direction of the rod. A contact portion for a rod-shaped object provided with a groove at a position, facing the contact portion outside the gripping member A disc-shaped screw fastener having a diameter of 45 to 55 mm, a screw whose both ends are fixed to the center portion of the contact portion and the disc-shaped screw fastener, and which is engaged with the gripping member by a screw. A hang clamp, comprising a rod, and further comprising (e) a contact portion protection member provided on the contact member opening side of the contact portion.