JP2016178953A - Noise insulation protector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To plug an ear plug equipped with a connector suitable to be detachably connected to an attaching object such as a cord.SOLUTION: An ear plug 20 includes an ear plug body 21 inserted into an external auditory canal and a connector 22 integrated with the ear plug body 21. The noise insulation rating (NRR) of the ear plug body 21 is 24 dB or more. The connector 22 includes a buried part 22A extending inside from the end part 21a opposite to the insertion side of the ear plug body 21, and an exposed part 22B extending outside from the end part 21a opposite to the insertion side of the ear plug body 21. The exposed part 22B is connected to the end part of a cord 30. The connector 22 is composed of one string 24. The buried part 22A is formed by burying both end parts 24a and 24b of the string 24, which are arranged in parallel, inside the ear plug body 21. The exposed part 22B includes an annular part 22C. The annular part 22C is composed of an annularly curved part of the string 24.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an earplug which is a soundproof protector and a soundproof protector provided with an earplug.

  A corded earplug in which two earplugs inserted into the left and right external auditory canals are connected by a cord is known (Patent Document 1, Patent Document 6, Patent Document 7, Patent Document 8). Earplugs connected to other articles such as swimming caps, eye masks, safety hats, pillow covers, etc. via cords are also known (Patent Document 2, Patent Document 3, Patent Document 4, Patent Document 5).

JP 2007-236936 (paragraph number 0018, FIG. 18, etc.) JP 2006-348432 A (FIG. 1, FIG. 5, etc.) JP 2005-254022 (FIGS. 1, 3, etc.) Japanese Patent Application Laid-Open No. 2004-187745 (FIGS. 1, 5, etc.) JP-A-10-108773 (FIGS. 1, 2, etc.) Special table 2007-501130 (paragraph numbers 0005, 0016, 0025, FIG. 3, etc.) Special table 2005-537859 (paragraph numbers 0004, 0035, FIG. 14, etc.) Japanese Utility Model Publication No. 05-013421 (paragraph number 0011, FIG. 2, etc.)

As described above, a wide variety of corded earplugs are already known.
However, this type of earplugs, especially earplugs with cords as soundproofing protective equipment, do not plan to remove earplugs from cords and replace them with new earplugs when they become dirty due to use. . That is, when the earplugs become dirty, the cord is usually discarded together with the earplugs.

  The problem to be solved by the present invention is to provide an earplug provided with a connector suitable for removably connecting to a connection object such as a cord, and to provide two earplugs and to connect both earplugs. It is in a soundproofing protective device having a function of winding and storing a cord.

  The earplugs of the present invention include those shown in the following structural examples 1 to 4.

[Configuration example 1]
An earplug inserted into the ear canal;
A connector integrated with the earplug,
The connector is
A buried portion extending inward from the end of the earplug on the side opposite to the insertion side;
An exposed portion extending to the outside from the opposite end of the earplug body,
The exposed portion is
An earplug having an annular portion for connection with a connection target.

[Configuration example 2]
In Configuration Example 1,
The connector is
Have at least one string,
The buried portion is formed by burying at least one end of the string in the earplug body,
The said annular part is an earplug which consists of a part which the said string | curve curved in cyclic | annular form.

In the configuration example 2, it is desirable that the buried portion is formed by being buried in the earplug body in a state where both ends of the string are arranged in parallel.
In Structural Example 2, the buried portion may be formed by burying the string in the earplug body in a state where the string is annular (endless). Instead of making the string annulus (endless), a part of the flexible member that is originally annulus may be buried in the earplug. An example of this type of member is a rubber band.
In the configuration example 2, examples of the material of the string include nylon, polyester, PET, silicon rubber, cotton, hemp, paper, and the like.
In Configuration Example 2, the string is preferably made of a material containing or coated with a fluorescent substance.

[Configuration example 3]
In Configuration Example 1,
The connector is
At least one string,
A connecting portion that connects at least one end of the string and the earplug to each other;
The connecting member is
An earplug side member fixed to the earplug body;
A string side member fixed to the string,
The buried portion consists of at least a part of the earplug side member,
The annular portion consists of a portion where the string is curved in an annular shape,
An earplug in which the string side member and the earplug body side member are connected to each other.

[Configuration Example 4]
In Configuration Example 1,
The connector is
Having an insertion fixing part fixed in a state inserted in the earplug,
The buried part consists of at least a part of the insertion fixing part,
The exposed portion has an annular portion connected to the cord,
The said annular part is a soundproofing protector currently formed in the anti-insertion side edge part of the said insertion fixing | fixed part.

In the configuration examples 1 to 4, the non-insertion-side end portion is an end portion on the side exposed from the ear canal when the earplug is inserted into the ear canal.
In Structural Examples 1 to 4, it is desirable that the sound insulation value (NRR) of the earplug is 24 dB or more.
In Configuration Examples 1 to 4, examples of the shape of the earplug body include a cylindrical shape, a substantially cylindrical shape (bullet shape) in which the insertion-side end portion is rounded into a convex spherical shape, and an insertion-side end portion in a convex spherical shape. And a substantially cylindrical shape (bell shape) in which the edge of the end portion on the side opposite to the insertion side is enlarged.

  The soundproof protector of the present invention includes those shown in the following configuration example 5.

[Configuration Example 5]
Two earplugs,
A cord connecting the earplugs to each other;
An earplug connector provided at the tip of the cord to removably connect the earplug;
A cord storage device for winding and storing the cord;
The cord storage device is provided with an attachment for removably attaching it to the wearer's clothes,
The earplug is
The earplug according to any one of Configuration Examples 1 to 4,
A soundproof protector, wherein the annular part of the earplug is connected to an end of the cord.

In the configuration example 5, the fixture is a clamp that can be attached to the wearer's clothes by sandwiching a part of the wearer's clothes (collar, upper standing, edge of the chest pocket outlet, etc.). It is desirable that As the mounting tool, a safety pin, a flat fastener, or the like can be used.
In Configuration Example 5, the cord is preferably made of a material containing or coated with a fluorescent substance.

ADVANTAGE OF THE INVENTION According to this invention, the earplug provided with the coupling tool suitable for detachably connecting to connection objects, such as a cord, can be provided.
Further, according to the present invention, there are provided two earplugs, a cord connecting both earplugs, a function of winding and storing the cord, and attached to a collar of a wearer's clothes. A soundproof protector that can be used can be provided.

The perspective view which illustrates embodiment of the soundproof protector of this invention 1 is an exploded cross-sectional view of the earplug used in the soundproofing protective device shown in FIG. Cross-sectional view showing a form of earplug Exploded sectional view showing a form of earplug Exploded sectional view showing a form of earplug Exploded sectional view showing a form of earplug Exploded sectional view showing a form of earplug

  Hereinafter, the best mode for carrying out the present invention will be described.

  FIG. 1 is a front view of an essential part illustrating an embodiment of a soundproof protector according to the present invention. FIG. 2 is a cross-sectional view of the earplug used in the soundproof protector shown in FIG.

  The soundproofing protective device 1 includes two earplugs 20 (L) and 20 (R), a cord 30 connecting both earplugs 20 (L) and 20 (R) to each other, and winding and storing the cord 30 A cord storage device 40.

Both earplugs 20 (L) and 20 (R) are earplugs having the same structure and function.
The earplug 20 includes an earplug body 21 that is inserted into the ear canal and a connector 22 that is integrated with the earplug body 21.
The earplug 21 is made of polyurethane, elastic foam polymer, or silicon. The sound insulation value (NRR) of the earplug 21 is 18 dB or more, preferably 29 dB or more.
The connector 22 includes an embedded portion 22A extending from the anti-insertion side end portion 21a of the ear plug body 21 to the inside and an exposed portion extending from the anti-insertion side end portion 21a of the ear plug body 21 to the outside. 22B.
The exposed portion 22B is connected to the end portion of the cord 30.
The connector 22 is composed of a single thin string 24.
The cord 30 and the string 24 are made of a material containing a fluorescent substance. As an example of a fluorescent substance, the high brightness long afterglow photoluminescent pigment (N nightlight (trademark), luminova (trademark)) made from Nemoto Lumi Material Co., Ltd. can be mentioned.
The buried portion 22A is formed by burying the ear plug body 21 in the state in which both end portions 24a and 24b of the string 24 are arranged in parallel. Both end portions 24a and 24b of the string 24 are inserted into an insertion hole 21b formed in the central portion of the anti-insertion side end portion 21a of the earplug 21 and fixed with an adhesive.
The exposed part 22 </ b> B has an annular part 22 </ b> C connected to the cord 30.
The annular portion 22C includes a portion where the string 24 is curved in an annular shape, in this example, the entire exposed portion 22B.
The circumferential length of the annular portion 22C is 1 to 10 cm.

  At both ends of the cord 30, ring clips (connection objects) 31 made of an elastic member are provided so that the earplug 1 can be detachably connected. The earplug 1 is detachably connected to the cord 30 by locking the annular portion 22 </ b> C to the ring clip 31.

The cord storage device 40 includes a winding mechanism 41 and a housing 43 that stores the winding mechanism 41. The winding mechanism 41 has a winding drum (not shown) around which the intermediate portion of the cord 30 is wound, and a winding drum that constantly biases the winding drum to rotate the winding drum in the direction in which the cord 30 is wound. The winding mechanism 41 having a biasing mechanism (not shown) winds the cord 30 around the winding drum when the winding drum rotates in the first direction with respect to the housing 43, and the second direction ( The cord 30 is fed out from the winding drum by rotating in the reverse direction of the first direction. More specifically, when both sides of the cord 30 wound around the winding drum are pulled, the winding drum rotates in the second direction with respect to the housing 43 against the force of the urging mechanism, The code 30 is paid out. Each time the cord 30 is fed out by a predetermined length (for example, 10 cm to the left and right), the winding drum is locked by a locking mechanism (not shown) in the winding mechanism 41 so that the cord 30 is drawn out. Retained. With this mechanism, the feeding length of the cord 30 can be adjusted stepwise. When the both sides of the cord 30 are pulled a little again, the winding drum is unlocked. Then, the winding drum rotates in the first direction by the force of the urging mechanism, and the cord 30 is wound up.

  The cord storage device 40 is provided with a bee-type clip (clamping tool) 44 for detachably attaching it to the wearer's clothes. The bee-type clip 44 is attached to the outer surface of the housing 43 of the cord storage device 40.

  The soundproofing protective device 1 can be attached to the wearer's clothes by sandwiching a collar or a breast pocket of the wearer's clothes with a bee-type clip 44 provided in the cord storage device 40. Since the earplugs 20 are connected to both ends of the cord 30, the earplugs 20 can be prevented from being lost. When the earplug 20 is not used, the cord 30 can be wound and stored in the cord storage device 40. When the earplug 20 is used, the cord 30 can be easily pulled by pulling both sides of the cord 30. Since 30 can be extended, both portability and usability are excellent.

  Further, when the earplug 20 becomes dirty due to use, the used earplug 20 can be easily removed and replaced with a new earplug 20 by opening the ring clip 31 at the tip of the cord 30. Since the annular portion 22C of the earplug 20 is made of a thin string 24, it can be easily engaged with and disengaged from (removed from) the ring clip 31.

  Further, if the circumference of the annular portion 22C of the earplug 20 is selected to be 6 to 10 cm, it is easy to connect to a connection object other than the ring clip 31. For example, it is possible to directly tie a cord or string to be connected to the annular portion 22C of the earplug 20. That is, the earplug 20 is not a dedicated item for the soundproofing protector 1 shown in FIG. The earplug 20 can be used alone without being connected to a cord or the like.

  Even when the earplug 20 is used alone, the annular portion 22C made of the string 24 extends outward from the opposite end 20a of the earplug 20 so that the annular portion can be hooked with a finger. There is an advantage that the earplug 20 can be pulled out from the ear canal.

  The earplug 20 can be manufactured at a low cost because it can be manufactured by a simple process of inserting both end portions 24a and 24b of the string 24 into the central portion of the end portion 21a opposite to the insertion side of the earplug body 21.

  Further, when the earplugs 20 are stored or distributed in a predetermined number unit, the earplugs 20 can be handled in the predetermined number unit by binding the ring portions 22C of the predetermined number of earplugs 20 with a string or the like. . If the earplug 20 is handled in units of several to ten, the annular portion 22C of one of the earplugs 20 can be used as a binding string. For example, when the earplugs 20 are handled in units of ten, the annular portions 22C of the remaining nine earplugs 20 can be bound by the annular portions 22C of one earplug 20 of them.

  In addition, since the string 24 extending outward from the end 21a of the earplug 21 to the outside is made of a material containing a fluorescent substance, the person in charge of safety and health management in a factory can work in a noisy environment. Whether or not the person engaged is wearing the earplug 20 can be easily visually recognized even in a dark place. Further, since the cord 30 connecting the left and right earplugs 20 is made of a material containing a fluorescent material, the position and use state of the soundproofing protective device 1 can be easily visually recognized even in a dark place.

The configuration of the present invention is not limited to the configuration of the above embodiment.
In the above example, both ends 24a and 24b of the string 24 are buried in the earplug 21 in a state in which the strings 24 are arranged in parallel. However, the ends 24a and 24b of the string 24 are tied to each other. May be embedded in the earplug 21 in a state where the ring is in an annular shape (endless shape). Further, instead of the string 24, it is also possible to use an originally annular (endless) member such as a rubber band.

3 to 9 illustrate other embodiments of the earplug 20.
In the earplug 20 illustrated in FIG. 3, only one end portion 24a of the string 24 is embedded in the earplug body 21 to form an embedded portion 22A, and the other end portion 24b is adjacent to the one end portion 24a. The annular portion 22 </ b> C is formed by fixing with a binding member 25. One end 24a of the string 24 is inserted into the central portion of the anti-insertion side end 21a of the earplug 21 and is fixed with an adhesive. The earplug 20 of FIG. 3 has the same operation and effect as the earplug 20 of FIG.

The earplug 20 illustrated in FIG. 4 includes a connecting member 26 that connects both end portions 24a and 24b of the string 24 and the earplug body 21 to each other. The connecting member 26 is embedded in the center portion of the end portion 21a opposite to the insertion side of the earplug 21 and forms an embedded portion 22A.
The connection member 26 includes an earplug body side member 26 </ b> A fixed to the earplug body 21 and a string side member 26 </ b> B fixed to the string 20. Both ends 24a and 24b of the string 24 are fixed to the string side member 26B.
The earplug side member 26A is a member having a female screw structure. The earplug body side member 26A is fitted into a recess formed in the central portion of the anti-insertion side end portion 21a of the earplug body 21, and is fixed with an adhesive.
The string side member 26B is a member having a male screw structure. The string 24 is attached to the non-insertion side end 21a of the earplug 21 by screwing the string-side member 26B to which the string 24 is previously attached into the screw hole 28 of the earplug body-side member 26A.

  In the connecting member 26 illustrated in FIG. 5, the earplug body side member 26 </ b> A is a male screw structure member and the string side member 26 </ b> B is a female screw structure member, contrary to the example of FIG. 4. The earplug member-side member 26 </ b> A has a column portion 27 with one end portion (tip portion) pointed, and a male screw portion 29 a is formed at the other end portion of the column portion 27. The earplug body side member 26A is fixed to the earplug body 21 by inserting a support column 27 into the central portion of the end portion 21a opposite to the insertion side of the earplug body 21 and fixing it with an adhesive. The thread 24 is attached to the opposite end 21a of the earplug body 21 by screwing the screw hole 29b of the string side member 26B to which the string 24 is previously attached to the earplug body side member 26A.

  The earplug 20 illustrated in FIG. 6 has a connector 22 that is attached to the earplug body 21 by being coaxially inserted therein. The connector 22 includes a shaft portion 51 inserted into the ear plug body 21 and an annular portion 52 formed at the end of the shaft portion 51 on the opposite side to the insertion side. The shaft portion 51 of the connector 22 is formed with a return portion (hook portion) 54 for preventing the disconnection. An insertion hole 55 for inserting the shaft portion 51 is formed in the earplug 21. The insertion hole 55 is formed in a shape and size that allows the return portion 54 of the shaft portion 51 to be fitted. The connector 22 is integrated with the earplug 21 by inserting the shaft portion 51 into the insertion hole 55 of the earplug 21.

  The connecting tool 22 illustrated in FIG. 7 is the same as the example of FIG. 6 in that the return portion 54 is formed on the shaft portion 51, but the insertion hole 55 is not formed in the earplug body 21. The connector 22 is integrated with the earplug 21 by inserting the shaft 51 into the earplug 21.

  In the above-described embodiment, the case where the bee-type clip 44 is adopted as the holding tool has been described as an example. However, other holding tools such as an eyeball clip can also be used.

DESCRIPTION OF SYMBOLS 1 Soundproofing protector 20 (L), 20 (R) Ear plug 21 Ear plug body 21a Opposite side end part 22 Connection tool 22A Buried part 22B Exposed part 22C Annular part 24 String 24a One end part 24b The other end part 25 Bundling member 26A Earplug body side member 26B String side member 27 Strut part 30 Cord 31 Ring clip (connection object)
40 Cord storage device 44 Bee-type clip (clamp, fixture)

Claims (4)

An earplug inserted into the ear canal;
A connector integrated with the earplug,
The connector is
A buried portion extending inward from the end of the earplug on the side opposite to the insertion side;
An exposed portion extending to the outside from the opposite end of the earplug body,
The exposed portion is
An earplug having an annular portion for connection with a connection target. The connector is
Have at least one string,
The buried portion is formed by burying at least one end of the string in the earplug body,
The earplug according to claim 1, wherein the annular portion includes a portion where the string is annularly curved. The connector is
At least one string,
A connecting member connecting at least one end of the string and the earplug to each other;
The connecting member is
An earplug side member fixed to the earplug body;
A string side member fixed to the string,
The buried portion consists of at least a part of the earplug side member,
The annular portion consists of a portion where the string is curved in an annular shape,
The earplug according to claim 1, wherein the string side member and the earplug body side member are connected to each other. Two earplugs,
A cord connecting the earplugs to each other;
An earplug connector provided at the tip of the cord to removably connect the earplug;
A cord storage device for winding and storing the cord;
The cord storage device is provided with an attachment for removably attaching it to the wearer's clothes,
The earplug is
The earplug according to any one of claims 1 to 3,
A soundproof protector, wherein the annular part of the earplug is connected to an end of the cord.