JP2000274575A - Tightening band - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To prevent a band tip from coming out of a housing. SOLUTION: The provision of a temporary fixing means 4 for changing the rotational resistance of the worm 2 at the tip 1a of the band 1 allows the tip 1 of the band 1 to rotate with the rotation of the worm 2.
When a is unwound into the housing 3, the temporary stop means 4 changes the rotational resistance of the worm to notify the operator of the rotation stop timing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tightening band for removably fastening long objects such as hoses and cords. Specifically, the worm is rotatably supported by a housing connected to the base end of the band, and the band having fixed pitch teeth meshing with the worm is wound around the band, and the tip is inserted into the housing. Further, the present invention relates to a tightening band for tightening by contracting the diameter of the band by rotating the worm.

[0002]

2. Description of the Related Art Conventionally, this kind of tightening band has, as disclosed in, for example, Japanese Patent Application Laid-Open No. 4-47511, a constant pitch tooth which meshes with a worm continuously from a longitudinal middle position of the band to a tip end thereof. When the operator turns the worm in the forward direction with a screwdriver while the tip is inserted into the housing,
If the band moves in the tightening direction to reduce its diameter and is rotated in the opposite direction, the band moves in the loosening direction to increase its diameter, and if the band continues to rotate, the tip of the band will move inside the housing. It is structured to pass through.

[0003]

However, in such a conventional tightening band, since the constant pitch teeth are continuously formed up to the end of the band, the worm rotates until the end of the band passes through the housing. If the resistance does not change significantly, and as a result the worm rotates too much during the work of moving the band in the loosening direction due to the reverse rotation of the worm, the tip of the band will pass through the inside of the housing. In order to continue the operation from this detached state, the operator has to re-insert the tip of the band into the housing with both hands again, and there is a problem that it is very troublesome.

An object of the present invention is to prevent the tip of the band from coming off the housing. The second and third aspects of the present invention have the object of forming the temporary fixing means without special processing on the band, in addition to the object of the first aspect of the present invention.

[0005]

In order to achieve the above-mentioned object, according to the first aspect of the present invention, a temporary fixing means for changing the rotational resistance of the worm is provided at the tip of the band. It is characterized by having. Claim 2
The described invention is characterized in that, in addition to the configuration of the first aspect of the present invention, a configuration is provided in which the temporary fixing means is a different pitch tooth having a different pitch from the fixed pitch tooth. According to a third aspect of the present invention, in the configuration of the first aspect of the present invention, the temporary fixing means includes:
The present invention is characterized in that a configuration in which a protrusion having a different pitch from the fixed pitch tooth is added.

[0006]

According to the first aspect of the present invention, a temporary fixing means for changing the rotational resistance of the worm is provided at the distal end of the band, whereby the distal end of the band is rewound into the housing with the rotation of the worm. At this point, the rotation resistance of the worm is changed by the temporary fixing means to notify the worker of the rotation stop timing. The invention according to claim 2 is characterized in that, in addition to the configuration according to claim 1, a configuration is provided in which the temporary fixing means is a different pitch tooth having a different pitch from the fixed pitch tooth. By pressing using a mold with corresponding parts formed together,
The constant pitch teeth and the different pitch teeth are formed simultaneously. Claim 3
According to the invention, since the provisional fixing means is added to the configuration according to claim 1, wherein the temporary fixing means is a projection having a different tooth pitch from the fixed pitch tooth, a portion corresponding to the fixed pitch tooth and the projection in advance. By press-molding using a mold in which the fixed pitch teeth and the projections are formed at the same time.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. In this embodiment, as shown in FIG. 1, a bounce-preventing piece 3a is connected to a housing 3 so as to face a tip 1a of a band 1. .

The band 1 is made of a metal such as stainless steel which is hardly corroded. The band 1 is formed with fixed pitch teeth 1b from the middle position in the longitudinal direction to the tip 1a by press molding, for example. A housing 3 on which a worm 2 described later is rotatably supported is connected to the base end 1c.

The worm 2 is arranged so as to face the constant pitch teeth 1b of the band 1 inserted into the housing 3, and the teeth 2a mesh with the constant pitch teeth 1b. For example, a tool engaging portion 2b with which a tool such as a screwdriver or a spanner is engaged is formed, and the tool 2 is engaged with the tool engaging portion 2b to rotate the teeth 2a. Are configured to reciprocate.

Further, a temporary fixing means 4 for changing the rotational resistance of the worm 2 is provided at the tip 1a of the band 1. In this embodiment, the temporary fixing means 4 is a different pitch tooth 4a having a different pitch from the constant pitch tooth 1b, and uses a mold in which portions corresponding to the constant pitch tooth 1b and the different pitch tooth 4a are previously formed together. By press forming, the constant pitch teeth 1b and the different pitch teeth 4a are formed simultaneously. In the case of the illustrated example, the different pitch teeth 4a are fixed pitch teeth 1
b, the pitch is finer than that of b.
The pitch may be coarser than b.

Next, how to use the tightening band will be described. First, an operator winds the band 1 in an annular shape as shown in FIG. 1 so as to surround a long object such as a hose or a cord, and inserts the distal end portion 1a into the housing 3, and the fixed pitch teeth 1b. And the teeth 2a of the worm 2 are engaged.

In this state, when the worm 2 is rotated in the forward direction by a tool, the band 1 moves in the tightening direction to reduce the diameter of the worm 2, and accordingly, a long object such as a hose or a cord is tightened.

When the worm 2 is rotated in the opposite direction, the band 1 moves in the loosening direction for increasing the diameter thereof,
Along with this, long objects such as hoses and cords are loosened.

Further, if the rotation continues in the opposite direction,
When the tip 1a of the band 1 is unwound into the housing 3, the different pitch teeth 4a of the temporary fixing means 4 abut against the teeth 2a of the worm 2 to change the rotational resistance of the worm 2, and more specifically, The operator is notified of the rotation stop timing. At this point, if the operator stops the rotation operation of the worm 2, the tip 1 a of the band 1 does not move any more, and the tip 1 a of the band 1 can be prevented from falling out of the housing 3.

Therefore, there is no need for the operator to reinsert the tip 1a of the band 1 into the housing 3 with both hands. Moreover, the constant pitch teeth 1b and the different pitch teeth 4a are formed simultaneously by press-forming using a mold in which portions corresponding to the constant pitch teeth 1b and the different pitch teeth 4a are formed in advance. As a result, the temporary fixing means 4 can be formed without special processing such as attaching a separate member to the band 1.

FIG. 2 shows another embodiment of the present invention. This has a configuration in which the temporary fixing means 4 is a projection 4b having a different tooth pitch from the fixed pitch tooth 1b.
Unlike the embodiment shown in FIG. 1, the other configuration is the same as the embodiment shown in FIG. In the illustrated example, the protruding portion 4b is provided to project shallower than the valley of the constant pitch teeth 1b, but may be protruded higher than the peak of the constant pitch teeth 1b.

Accordingly, the structure shown in FIG. 2 is press-formed by using a mold in which portions corresponding to the fixed pitch teeth 1b and the projections 4b are formed in advance, similarly to the embodiment shown in FIG. Thus, the constant pitch teeth 1b and the protrusions 4b are formed simultaneously. As a result, the temporary fixing means 4 can be formed without special processing such as attaching a separate member to the band 1.

In the above-described embodiment, the temporary fixing means 4 is the case of the different pitch teeth 4a and the projections 4b which can be formed simultaneously by one press forming. However, the present invention is not limited to this.
Of the worm 2, such as increasing the thickness of the tip 1a, increasing the width of the tip 1a, turning the tip 1a back to raise the nail, or attaching another member to the tip 1a. Other structures may be used as long as the rotation resistance can be changed. Further, the bounce-preventing piece 3a, which is provided to the housing 3 so as to face the distal end portion 1a of the band 1, is not limited to the structure shown in the figure, and may have another structure.

[0019]

As described above, according to the first aspect of the present invention, the provision of the temporary fixing means for changing the rotational resistance of the worm is provided at the tip of the band so that the rotation of the worm can be prevented. At the time when the tip of the band is rewound into the housing, the temporary stop means changes the rotation resistance of the worm and informs the operator of the timing of stopping the rotation, preventing the tip of the band from coming out of the housing. it can. Therefore, as compared with the conventional device in which the tip of the band easily passes through the housing, the operator does not have to reinsert the tip of the band into the housing with both hands again, and the usability is good.

According to a second aspect of the present invention, in addition to the effect of the first aspect of the present invention, press molding is performed by using a mold in which portions corresponding to fixed pitch teeth and different pitch teeth are formed in advance. Since the fixed pitch teeth and the different pitch teeth are formed at the same time, the temporary fixing means can be formed on the band without special processing.

According to a third aspect of the present invention, in addition to the effect of the first aspect of the present invention, the constant pitch teeth and the portions corresponding to the projections are press-formed using a mold in which portions corresponding to the projections are previously formed. Since the pitch teeth and the protrusions are formed at the same time, the temporary fixing means can be formed without special processing on the band. Therefore, band processing is simple and cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of a tightening band according to an embodiment of the present invention, in which a flip-up preventing piece 3a is partially cut away.

FIG. 2 is a longitudinal sectional front view of a tightening band showing another embodiment of the present invention, wherein (A) shows a state before the temporary fixing means is operated, and (B) is a partially enlarged view of an operation state of the temporary fixing means. Is shown.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Band 1a Tip part 1b Constant pitch tooth 1c Base end part 2 Worm 3 Housing 4 Temporary fixing means 4a Different pitch tooth 4b Projection

Claims (3)

[Claims] A worm (2) is rotatably supported by a housing (3) connected to a base end (1c) of a band (1), and fixed pitch teeth (1) meshed with the worm (2).
b) is wound around the band (1) arranged side by side, the tip (1a) is inserted into the housing (3), and the diameter of the band (1) is shrunk by rotating the worm (2). A tightening band which is provided with a temporary fixing means (4) for changing a rotational resistance of a worm (2) at a tip portion (1a) of the band (1). 2. The tightening band according to claim 1, wherein the temporary fixing means is a different pitch tooth having a different pitch from the constant pitch tooth. 3. The tightening band according to claim 1, wherein the temporary fixing means is a protrusion having a different toothing dimension from the fixed pitch teeth.