JPS609209Y2 - earmuffs for cold weather - Google Patents

Description

[Detailed Description of the Invention] This invention relates to earmuffs for cold protection, and is intended to provide a simple connection structure between the earmuffs and the headband, which can easily and reliably adjust the attachment position of the earmuffs body to the headband.

For this purpose, this invention, as shown in the illustrated embodiment, has a longitudinal long hole 3 bored in the back surface of the bowl-shaped base 2 in the earmuff body 1, and upper and lower holes 1 projecting into the long hole 3. A pair of elastic tongues 4, 4 are provided in a protruding manner to face each other, and a guide portion 5 having a substantially U-shaped cross section is integrally formed in the middle of the elongated hole 3 so as to straddle the same. While the recess 16 is provided, strip-shaped insertion parts 7, 7 are provided at both ends of the headband 6, which is formed in a substantially reverse U-shape, and a plurality of positioning protrusions 8 that fit into the small recess 16 are provided on the outer surface thereof. The band-shaped insertion portions 7 are inserted into the guide portion 5 of the earmuff main body 1, and the insertion portions 7 are connected to the inner surface of the top wall of the guide portion 5 and the elastic tongue pieces 4, 4 at regular intervals. It is characterized by having a configuration in which it is sandwiched and pressed between.

The bowl-shaped base 2 of the earmuff body 1 is made of synthetic resin,
A raised heat insulating sheet 9 is attached by an annular holding frame 10 to cover the opening surface.

To install this heat insulating sheet 9, attach it to the annular holding frame 1 in advance.
0, the holding frame 10 is tightly fitted to the outer periphery of the bowl-shaped base body 2, and the holding frame 10 is prevented from falling off by the hole 11 and the locking protrusion 12 that fits into the hole 11. It is attached by locking it to.

Reference numeral 13 indicates a plurality of through holes for sound application bored in the peripheral edge of the back surface of the bowl-shaped base body 2, and reference numeral 14 indicates a raised portion provided on the outer surface of the tip of the elastic tongue piece 4, which ensures more reliable compression of the headband 6. It is meant to be carried out.

The headband 6 is made of a rust-free metal plate spring, and in the middle part thereof, that is, in the position between the insertion parts 6 at both ends,
A flexible synthetic resin tube 15 is fitted.

Reference numeral 17 designates synthetic resin caps fitted to both ends of the headband 6.

The spacing between the positioning protrusions 8 of the insertion part 7 is such that when one of the positioning protrusions 8 is fitted into the small recess 16, the upper and lower protrusions 8 are located above and below the guide part 5, as shown in FIG. It should be set as follows.

Since this invention has the above-mentioned configuration,
At the time of assembly, the installation of the earmuff main body 1 can be completed simply by firmly inserting the band-shaped insertion parts 7, 7 of the headband 6 into the guide part 5, and it is easy to assemble and manufacture. After assembly, the positioning protrusion 8 fits into the small recess 16 of the guide part 5 as shown in FIG. There is no drawback that the main body 1 moves unnecessarily.

Moreover, when moving the earmuff main body 1, by strongly pulling up or pushing down the insertion part 7 of the headband 6, the positioning protrusion 8 is moved out of the small recess 16 with the bending of the elastic tongues 4, 4. The earmuff main body 1 can be adjusted up and down in stages with a click stop effect, and the same protrusions in the next position alternately fit into the small recesses 16 and stop. It can always be used in a suitable state depending on the size of the head.

[Brief explanation of drawings]

The drawings show an embodiment of this invention, and Fig. 1 is a perspective view showing one earmuff main body separated from the headband;
FIG. 2 is a partially cutaway side view of the main part, and FIG. 3 is a partially cutaway plan view thereof. 1...earmuff body, 2...bowl-shaped base,
3...Long hole, 4...Elastic tongue piece, 5...
...Information section, 6...Headband, 7...
...Band-shaped insertion part, 8...Positioning protrusion, 1
4...Protuberance, 16...Small recess.

Claims (3)

[Scope of utility model registration request] (1) A long hole 3 is vertically bored in the back surface of the bowl-shaped base 2 in the earmuff body 1, and a pair of upper and lower elastic tongues 4, 4 protruding into the long hole 3 are projected in opposite directions. A guide portion 5 having a substantially U-shaped cross section is integrally formed so as to straddle the length of the elongated hole 3, and a small recess 16 is provided on the inner surface of the guide portion 5. A plurality of positioning protrusions 8 that fit into the small recesses 16 are provided at regular intervals on the outer surfaces of the band-shaped insertion parts 7, 7 at both ends of the headband 6 formed in the headband 6. is inserted into the guide part 5 of the earmuff main body 1, and the insertion part 7 is elastically clamped between the elastic tongues 4, 4 and the inner surface of the top wall of the guide part 5. Cold weather earmuffs. (2) The ear cover for cold weather according to claim 1, in which the headband 6 is made of a metal plate spring. (3) The earmuff for cold protection according to claim 1 or 2, wherein the elastic tongue piece 4 has a raised portion 14 on the outer surface of its tip.