JP2580767Y2 - Cold shrink tube - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION This invention relates to a room-temperature shrinkable tube used for insulating a charged exposed portion of a distribution line or the like, rust-proofing a metal pipe used for an automobile or the like, and reducing external impact force. More particularly, the present invention relates to a cold-shrinkable tube that can be simultaneously contracted from a substantially central portion to both sides of an elastic tube.

[0002]

2. Description of the Related Art Conventionally, a cold-shrinkable tube as disclosed in Japanese Utility Model Application No. 3-59317 devised by the applicant of the present application has been used. When the tube is contracted, the length of the elastic tube that can be used is limited to about 20 cm at most, and a heat source such as a torch or a dryer is used for a crown body longer than this. The required heat shrink tubing was used. However, most of the places where cold shrink tubes are used are where the use of heat sources is prohibited. For places where cold shrink tubes cannot be applied for the above reasons, rubber tapes should be used instead. Although emergency treatment was performed by wrapping a wrapper around the body, it is a serious problem that the wrapping work is troublesome, and the aesthetics that affect the reliability of the quality after treatment and the commercial value are inferior. There has been a problem, and there has been a strong demand for the emergence of a room-temperature shrink tube longer than the current state.

[0003]

SUMMARY OF THE INVENTION The present invention has been made to solve the problems described in the prior art, and is a cold shrink tube having a length approximately twice as long as the conventional one.
The purpose of this is to provide services.

[0004]

SUMMARY OF THE INVENTION The present invention is directed to an elastic tube which is expanded in a radial direction to a spacer having two hollow cylinders having a flange at one end detachably connected at a substantially central portion. -Characterized in that it is fitted with a valve.

[0005]

[Action] After setting the room-temperature shrinkable tube on the crown body,
First, when the detachable connection at the center of the spacer is detached, the flange is gripped and pulled to the left and right, the elastic tube contracts from the center to both sides. Is removed from the elastic tube, the elastic tube is mounted on the crown.

An elastic tube having a length substantially equal to that of the conventional one can be mounted on the one hollow cylindrical body. Therefore, the spacer of the present invention consisting of two hollow cylindrical bodies is required. An elastic tube about twice as long as the conventional one can be attached. Furthermore, when the elastic tube is attached to the spacer, if the elastic tube is appropriately wrinkled, the length that can be attached can be further increased.

[0007] Since the two hollow cylinders can be pulled out at the same time, even if the length becomes long, the work time required for mounting on the crowned body is almost the same as the conventional one.

[0008] The appearance and quality after the elastic tube is mounted on the crown body is not inferior to the conventional one.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings showing an embodiment of the present invention, as shown in FIGS. 1 to 3, two hollow cylinders made of plastic such as hard vinyl or polyethylene and having a flange 1 at one end. An elastic tube 4 made of, for example, ethylene propylene rubber or natural rubber expanded in a radial direction is mounted on a spacer 3 having the bodies 2, 2 'detachably connected substantially at the center.

There are various methods for detachably connecting the two hollow cylinders 2 and 2 'substantially at the center. For example, the basic method is as shown in FIGS. A step portion having an appropriate length is provided at the end of the hollow cylindrical body 2, and an L-shaped notch groove 5 is provided at the step portion. On the inner side of the tip of the other hollow cylindrical body 2 ', there is provided a projection 6 which can be attached to and detached from the L-shaped cutout groove 5.

Before the elastic tube 4 is mounted, first, the hollow cylindrical body 2 ′ is inserted into the L-shaped cutout groove 5 of the hollow cylindrical body 2.
When the projection 6 is inserted and the flange 1 is rotated by an appropriate angle, the hollow cylindrical body 2 ′ is locked to the hollow cylindrical body 2. The outer diameter of the step portion of the hollow cylindrical body 2 and the inner diameter of the hollow cylindrical body 2 'are substantially equal. Thus, the spacer 3 is assembled. It should be noted that a well-known method that can be detachably connected can be applied to the present invention.

In order to mount the elastic tube 4 on the spacer 3, for example, first, the elastic tube 4 is mechanically expanded so that its inner diameter becomes larger than the outer diameter of the spacer 3. , Under that condition, insert the hollow cylindrical bodies 2, 2 'from left and right,
As described above, the elastic tube 4 is easily mounted on the spacer 3 by locking the both, forming the spacer 3, and then releasing the mechanical expansion applied to the elastic tube 4. it can.

[0013]

[Effect] Since this invention is configured as described above,
The following effects are exhibited. (1) An elastic tube approximately twice as long as the conventional one can be mounted. Therefore, the range of application to the coronary body is greatly expanded. (2) When attaching the elastic tube to the crown,
Since the spacer can be unlocked, the flange portion can be gripped, and the spacer can be pulled out on both sides, the work time required for mounting is the same as that of the related art. (3) The aesthetic appearance and the quality after the elastic tube is attached to the crown body are not inferior to the conventional one. Therefore, the appearance and quality are particularly suitable for the insulating material of the long straight connection portion of the outdoor distribution line which is particularly required.

[Brief description of the drawings]

FIG. 1 is a front view of one hollow cylindrical body showing an embodiment of the present invention.

FIG. 2 is a partially cutaway bottom view of the other hollow cylindrical body, showing one embodiment of the present invention.

FIG. 3 is a partially cutaway front view showing an embodiment of the invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Flange part 2 One hollow cylindrical body 2 'The other hollow cylindrical body 3 Spacer 4 Elastic tube 5 L-shaped notch groove 6 Projection

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-63-74624 (JP, A) JP-A-63-314116 (JP, A) JP-A-63-317318 (JP, A) JP-A-2- 193518 (JP, A) Japanese Translation of PCT International Publication No. 5-506348 (JP, A) Japanese Utility Model Application No. Sho 59-29215 (JP, U) Japanese Utility Model Application No. 3-30359 (JP, U) Japanese Utility Model Application No. 4-124626 (JP, U) Japanese Utility Model Application Hei 5-4716 (JP, U) Japanese Utility Model Application Hei 5-53138 (JP, U) Japanese Utility Model Application Hei 6-2919 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) H02G 15/00-15/196

Claims (1)

(57) [Scope of request for utility model registration] 1. A spacer (3) having two hollow cylinders (2, 2 ') having a flange portion (1) at one end, which is detachably connected at a substantially central portion, to a spacer (3) in a radial direction. A cold-shrinkable tube characterized by being fitted with an expanded elastic tube (4).