CN2291138Y

CN2291138Y - Cold-proof earmuff buckle device

Info

Publication number: CN2291138Y
Application number: CN 97201053
Authority: CN
Inventors: 钟东吉
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-01-29
Filing date: 1997-01-29
Publication date: 1998-09-16
Anticipated expiration: 2007-01-29

Abstract

The utility model relates to an ear protection device, in particular to a cold-proof ear cover fastening device. The utility model discloses constitute by ear muff casing, pintle and bandeau triplex, wherein the bandeau both ends respectively have a key hole, the pintle shape is similar to "native" word, the lower extreme is a horizontal circular pivot, circular pivot slightly top respectively has a barb to the left and right sides, the upper end is established the foot pole 42 of a step shaft form, the ear muff casing is a plastics cap, there is a radial shape of falling T perforation in nearly circumference department, respectively have one can with the circular pivot matched with recess on the pintle about the perforation, with two pintle and ear muff casing and bandeau respectively like this, can be fast firm lock joint winter protection ear muff.

Description

Winter protection earmuff fastening device

This utility model relates to a kind of earflap device, particularly winter protection earmuff fastening device.

Living in all the year round that ice and snow covers or the severe geographic people of cold wind, except the excellent warm clothing beyond the region of objective existence of needs, also is very important problem for the protection of the organs such as ear nose that are exposed to the outside easily in its daily life.And a kind of utensil of winter protection earmuff by name, ear avoids cold injury design for protection.The similar earphone moulding of its profile, nationality is fully covered ear by two earmuffs, freezes invasion to guarantee that fragile ear does not catch cold.Therefore, this product has become people's indispensable requisites of living in this area.

The winding mode of the present winter protection earmuff of producing both at home and abroad is nothing more than comprising following two kinds of structures.One, the hook nail portion that this earmuff winding is used is an ironwork, as shown in Figure 1, engage with machine riveting and 11 liang of head end modes of hand-held tool bending hook nail respectively between hook nail 11 and headband 12, the earmuff housing 13, this winding mode is not only time-consuming, and the irony hook portion will get rusty, and the possibility of scratch ear skin is also arranged.Fig. 2 is another kind of winding mode, wherein each assembly is plastic and makes, latch 21 head ends overlap 22 bonding with two plastic tapes respectively, after treating that two plastic tapes overlap mutual fit, hook nail 23 is inserted the latch afterbody, again that the support of latch afterbody is flat, hook nail 23 bottoms are respectively left a foot sheet 231 left to the right, two foot sheets 231 overlap respectively about two perforation also of plugging in earmuff housing 24 and strut snapping, though there is not the bad phenomenon of irony hook nail rust like this, also can remove the puzzlement of scratch skin, when this structure is worn use at stay bolt earmuff cover, two foot sheets 231 can have the phenomenon that produces slippage earmuff housing 24 to take place because bear extra pulling force.Moreover hook nail 23 ends and latch 21 two generally are that processing cost is also higher like this with the mode winding of ultrasound wave processing.

It is a kind of simple in structure that the purpose of this utility model is to provide, assemble simple and direct reliable, and the more firm winter protection earmuff fastening device of combination.

To achieve these goals, this utility model partly is made up of earmuff housing, clasp nail and headband three, and wherein headband has the mutual socket of better elastic plastic sheath band by one group and forms, and two overlap and are with two ends that one key shaped hole is respectively arranged; Clasp nail front contour approximation " soil " word, the lower end is the circular rotating shaft of a level, circular rotating shaft slightly top respectively has a barb to the left and right, and the foot lever of a multidiameter shape is established in upper end, clasp nail front, and the minimum diameter of foot lever equals to overlap the width of path slotted hole of the below, key shaped hole of band; The earmuff housing is a plastics cap, and a radially inverted T-shaped perforation is arranged at nearly circumference place, and perforation size just by being advisable, respectively has a groove that can match with the circular rotating shaft on the clasp nail with the upper end of foot lever on the clasp nail about perforation.With two clasp nails and earmuff housing and headband, get final product firm snapping winter protection earmuff rapidly so respectively.

This utility model is compared with existing technology, has simple in structure, easy for installation, firm; With low cost, more practical advantage.

Description of drawings:

Fig. 1 is the solid combination sketch map of one of prior art.

Fig. 2 is two a axonometric chart of prior art.

Fig. 3 is an axonometric chart of the present utility model.

Figure number:

30--headband 31--cover band 311--key shaped hole

The big footpath of 3110---path slotted hole 3111-circular hole

40--clasp nail 41--rotating shaft 42--foot lever

43--barb 431--wedge portion

50--earmuff housing 51--perforation 52--groove

Describe in detail below in conjunction with embodiment:

Fig. 3 is an axonometric chart of the present utility model, and wherein headband 30 has better elastic plastic sheath band 31 mutual sockets by one group and forms, and two covers are with 31 two ends that one key shaped hole 311 is respectively arranged; Clasp nail 40 front contour approximation " soil " words, the lower end is the circular rotating shaft 41 of a level, circular rotating shaft 41 slightly respectively has a barb 43 in the top to the left and right, the foot lever 42 of a multidiameter shape is established in the positive upper end of clasp nail 40, and the minimum diameter of foot lever 42 equals to overlap the width with the path slotted hole 3110 of 31 311 belows, key shaped hole; Earmuff housing 50 is a plastics cap, and a radially inverted T-shaped perforation 51 is arranged at nearly circumference place, and just by being as the criterion, perforation about 51 respectively has a groove 52 that can match with the circular rotating shaft 41 on the clasp nail 40 to 51 sizes of boring a hole with the upper end of foot lever 42 on the clasp nail 40.

In use, at first an end ecto-entad of foot lever 42 on the clasp nail 40 is passed the perforation 51 of earmuff housing 50, again to the clasp nail application of force a little, make the wedge portion 431 of barb 43 push through perforation 51, earmuff housing 50 is held between barb 43 and the circular rotating shaft 41, circular rotating shaft 41 this moment has been positioned at groove 52, and can in certain angle, rotate, again foot lever 42 is penetrated and is pressed in the path slotted hole 3110 to moving down by big footpath circular hole 3111 ends of cover with 31 key shaped hole 311, rapidly the firm snapping process of finishing.

Put different insulation materials in the outside of earmuff housing 50, can become a winter protection earmuff.

Claims

1. a winter protection earmuff fastening device is made up of headband, clasp nail, earmuff housing, it is characterized in that:

1. there is a key shaped hole (311) at the two ends of the last two cover bands (31) of headband (30),

2. the profile of clasp nail (40) is similar to " soil " word, and the lower end is the circular rotating shaft (41) of a level, and circular rotating shaft (41) slightly top respectively has a barb (43), upper end that the foot lever (42) of one multidiameter shape is arranged to the left and right;

3. there is a radially inverted T-shaped perforation (51) at the nearly circumference place of earmuff housing (50), and a groove (52) that can match with the circular rotating shaft (41) on the clasp nail (40) is respectively arranged about perforation.

2. winter protection earmuff fastening device according to claim 1 is characterized in that the minimum diameter of foot lever (42) equals to overlap the width of the path slotted hole (3110) of the below, key shaped hole (311) of being with (31).

3. winter protection earmuff fastening device according to claim 1 is characterized in that perforation (51) size goes up the upper end of foot lever (42) just by being as the criterion with clasp nail (40).