JP3001730U - Grip for towing line - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a grip that can be easily pulled even when a large load is applied to the nominal line. [Structure] A substantially columnar elastic body capable of gripping an outer peripheral surface 1 and having a slit 3 for sandwiching a nominal line in a longitudinal direction. It has outer flanges 5 and 5 at both ends. On the inner surface of the slit 3, a large number of small protrusions 6 in the cross-sectional direction are formed at a predetermined pitch in the axial direction.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a grip for pulling a wire.

[0002]

[Prior art]

 When wiring wires, cables, etc. to pipes, racks, etc., first pass a nominal wire with a diameter of about 5 mm, and then connect the tip of the wire etc. to the nominal wire, and connect the wires together with the nominal wire. It may be pulled and wired. In the case of pulling such a call line, conventionally, the call line was directly grasped and pulled by a gloved hand.

[0003]

[Problems to be solved by the device]

 However, since the nominal line is thin, it is difficult to apply force and the tightening force cannot be increased. Therefore, even if the pulling wire is strongly pulled, there is a problem that the hand slips along the calling line and it cannot be pulled, resulting in poor workability.

Therefore, an object of the present invention is to provide a wire pulling grip that solves the above-mentioned conventional problems.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention is a substantially columnar elastic body capable of gripping an outer peripheral surface and having a slit for sandwiching a nominal line in the longitudinal direction. In addition, the slit has a depth greater than or equal to the radius.

Further, it has outer flange portions at both ends. A large number of small ridges in the transverse direction are formed on the inner surface of the slit at a predetermined pitch in the axial direction. It has a tension relief groove in the longitudinal direction at a position 180 ° opposite to the slit in the cross section. The cross-sectional shape of the slit is substantially V-shaped.

Further, in the cross section, the gap between the outer diameter side opening ends of the slits is made narrower than the gap on the inner diameter side. The elastic body is made of rubber. The elastic body is made of soft plastic.

[0008]

[Action]

 Since the grip has a substantially columnar shape with a moderate size that is easy to grasp, it is easier to apply force compared to when gripping a thin nominal line directly with a gloved hand, and the inside surface of the slit and the outer peripheral surface of the line The friction resistance of can be increased. Therefore, even if a heavy load is applied to the calling line, it can be pulled easily and the grip does not slip.

Further, since the grip has a depth equal to or larger than the radius, when the slit is tightened, the portion forming the inner side surface of the slit acts like a “lever” and a large tightening force is obtained. You can Furthermore, when the grip is held by the hand and pushed and pulled, the outer flanges at both ends of the grip protect the hand from contact with other members, and the outer flanges function to prevent the grip from coming off. .

By sandwiching the nominal line by the small ridges on the inner surface of the slit, the contact surface pressure in the small ridges can be locally increased to further increase the frictional resistance. Further, since the grip has a tension relief groove, it is possible to release the tension, which is a reaction force used when the nominal line is tightened by the slit, and the slit is easily tightened.

Further, since the cross-sectional shape of the slit is substantially V-shaped, it is easy to insert the nominal line, and moreover, one slit can hold the nominal lines of various large and small outer diameters. Further, in the cross section, the gap between the outer diameter side opening ends of the slit is narrower than the inner diameter side gap, so even if the slit is loosened during towing work, the grip does not come off from the nominal line.

[0012]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the drawings illustrating an embodiment.

FIG. 1 and FIG. 2 show a grip for towing a wire according to the present invention. The grip is a substantially columnar elastic body capable of gripping the outer peripheral surface 1, and is made of a polyacetal resin or a polyethylene terephthalate resin. A slit 3 for sandwiching and pulling the nominal wire 2 made of plastic such as plastic is provided in the longitudinal direction (axial direction).

The elastic body is made of rubber or soft plastic that is abrasion resistant, semi-hard, and non-slip. Further, on the outer peripheral surface 1 of the grip, a plurality of concave portions 4 having an arc-shaped cross section are formed so that the gripping force can be easily applied and the gripping is difficult. In the illustrated example, the recess 4 is formed on the entire circumference.

As described above, since the grip has a substantially columnar shape of an appropriate size that is easy to grip, it is easier to apply force and slip than when gripping the thin nominal line 2 directly with a gloved hand. The frictional resistance between the inner surface 3 and the outer surface of the nominal line 2 can be increased. Therefore, even if a large load is applied to the nominal line 2, it can be pulled easily and the grip does not slip.

Further, the grip has outer flange portions 5 and 5 at both ends thereof. The outer collars 5, 5 protect the hand from contact with other members and prevent injuries when the grip is pushed and pulled by the hand, and the grip slips out when the hand slips. Prevent it from getting stuck.

The slit 3 has a depth H equal to or larger than the grip radius R, that is, a depth H from the outer peripheral surface 1 to a point beyond the center P. This facilitates elastic deformation of the slit 3 toward the inner side A, and allows the slit 3 to obtain a large tightening force by the action of the "lever".

Further, on the inner surface of the slit 3, a large number of small protrusions 6 in the cross-sectional direction are formed at a predetermined pitch in the axial direction. By sandwiching the nominal line 2 between the small protrusions 6, the contact surface pressure in the small protrusions 6 can be locally increased, and the frictional resistance can be further increased.

The grip has a tension relief groove 7 of a predetermined depth in the longitudinal direction at a position 180 ° opposite to the slit 3 in the cross section. The tension relief groove 7 is expanded by the tensions F and F generated by tightening the nominal line 2 at the slit 3 to absorb the tensions F and F and make the slit 3 easy to tighten.

Further, in the cross section, the interval T ₁ between the outer diameter side opening end portions of the slit 3 is made narrower than the inner diameter side interval T ₂ . As a result, even if the tightening of the slit 3 is loosened during work, it is possible to prevent the nominal line 2 from falling out of the slit 3 and the grip from coming off the nominal line 2.

Next, FIGS. 3 and 4 show another embodiment. In this case, the slit 3 has a substantially V-shaped cross section, and the recesses 4 ... Of the outer peripheral surface 1 are formed on only about half the circumference. Similar to the previous embodiment, the slit 3 has a depth H equal to or larger than the radius R and has a large number of small protrusions 6 ...

It should be noted that the present invention is not limited to the above-described embodiments, and design changes are possible without departing from the gist of the present invention. For example, in the embodiment of FIGS. 1 and 3, the small protrusion 6 of the slit 3 may be formed so as to be displaced in the axial direction as shown in FIG. 5, or the small protrusion 6 may be omitted.

[0023]

[Effect of device]

 Since the present invention is constructed as described above, it has a great effect as described below.

According to the grip of claim 1, instead of directly gripping the thin call wire 2 with a gloved hand, the call wire 2 is gripped via a grip that is an elastic body having a substantially cylindrical shape. Therefore, the nominal line 2 can be tightened with sufficient force applied. Therefore, the frictional resistance between the nominal line 2 and the slit 3 becomes large, and even if the nominal line 2 is strongly pulled, the grip does not slip along the nominal line 2 and it can be easily towed and the workability is good. .

According to the grip of claim 2, since the grip 3 has a depth equal to or larger than the radius R, the tightening force of the nominal line 2 by the slit 3 is increased even if the gripping force is small. be able to.

According to the grip of the third aspect, since the grip has the outer collar portions 5 and 5 at both ends thereof, when the grip is pushed and pulled by a hand, the grip does not come into contact with other members. It is safe to protect people from injury and prevent injuries. Also, even if the hand slips, the grip can be prevented from slipping out.

According to the grip of the fourth aspect, by sandwiching the nominal line 2 by the small protrusions 6 of the slit 3, the frictional resistance can be further increased, and slipping of the grip is surely prevented. To be done.

According to the grip of the fifth aspect, the tension relief groove 7 can release the reaction force generated when the slit 3 is tightening the nominal wire 2, and the tightening of the nominal wire 2 can be further improved. .

According to the grip of claim 6, since the cross-sectional shape of the slit 3 is substantially V-shaped, it is easy to insert the nominal wire 2 into the slit 3, and moreover, the nominal wire having a large and small outer diameter in a wide range. Is practical and practical.

According to the grip of claim 7, the interval T ₁ between the outer diameter side opening ends of the slit 3 is made narrower than the interval T ₂ on the inner diameter side in the cross section, so that the tightening of the slit 3 is loosened. However, the grip and call line 2 do not come off, and you can perform towing work without interruption.

According to the grips of claims 8 and 9, since the elastic body is made of rubber or soft plastic, it is possible to easily obtain appropriate elasticity and hardness (abrasion resistance), and quickly and easily by molding. It is possible to manufacture in large quantities and reduce costs.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is a front view.

FIG. 3 is a plan view showing another embodiment.

FIG. 4 is a front view.

FIG. 5 is a main part plan view showing a modified example of the small protrusions.

[Explanation of symbols]

1 Outer peripheral surface 3 Slit 5 Outer collar 6 Small ridge 7 Relief groove R Radius T ₁ interval T ₂ interval

Claims (9)

[Scope of utility model registration request] 1. A grip for pulling a wire, which is a substantially columnar elastic body capable of gripping an outer peripheral surface 1 and has slits 3 for holding the wire in a longitudinal direction. 2. The grip for pulling a call line according to claim 1, wherein the slit 3 has a depth of a radius R or more. 3. The outer flanges 5, 5 are provided at both ends.
Alternatively, the grip for pulling the calling line described in 2. 4. A plurality of small cross-section direction ridges 6 are formed on the inner surface of the slit 3 at a predetermined pitch in the axial direction.
Alternatively, the grip for pulling the calling line described in 3. 5. The grip for pulling the wire of claim 1, wherein a tension relief groove 7 is provided in the longitudinal direction at a position opposite to the slit 3 by 180 ° in the cross section. 6. The grip for pulling the wire of claim 1, wherein the slit 3 has a substantially V-shaped cross section. 7. The grip for pulling the wire of claim ₁ , wherein the distance T ₁ between the outer diameter side opening ends of the slit 3 in the cross section is narrower than the distance T ₂ on the inner diameter side. .. 8. The elastic body is made of rubber.
Grips for pulling the wire of reference lines 3, 4, 5, 6 or 7. 9. The wire pulling grip according to claim 1, 2, 3, 4, 5, 6 or 7, wherein the elastic body is made of soft plastic.