Buckle equipped with a whistle

1. A buckle comprising:

a buckle body and a whistle, the buckle body having a plurality of first portions for either one or both of attaching or receiving respective belt portions, the buckle body having a second portion distinct from each of the first portions and to which the whistle is detachably coupled;

wherein said second portion allows slidable detachment of the whistle from said buckle body while said respective belt portions are received or attached at said first portions;

wherein all belt portions received or attached at the buckle are received or attached by said first portions independent of a coupling state between the whistle and the second portion;

wherein the second portion comprises a sliding part;

wherein the whistle comprises a whistle body to generate sound, and a connection part connected to the whistle body and configured to detachably connect to the sliding part; and

wherein the connection part comprises:

a front surface provided with an insertion groove having the same shape as a first end of the sliding part, the front surface having a first edge adjacent and connected to the whistle body, wherein the first end of the sliding part is configured to be inserted into the insertion groove;

a right side surface, extending from a second edge of the front surface opposed to the first edge, the right side surface being provided with the insertion groove formed in a length direction of the connection part, where the sliding part is configured to be inserted into the insertion groove;

a flat surface extending in the length direction of the connection part from a third edge of the front surface, the third edge of the front surface extending between the whistle body and the right side surface;

a rear surface opposing the front surface in order to support the sliding part; and

a bottom surface extending in the length direction of the connection part from a fourth edge of the front surface, the fourth edge of the front surface extending between the whistle body and the right side surface.

2. The buckle of claim 1 , wherein the insertion groove extends toward the rear surface from a first end of the right side surface connected to the front surface.

3. The buckle of claim 2 , wherein the insertion groove extends to a position of the right side surface that is a predetermined distance from the rear surface.

4. The buckle of claim 1 , wherein the insertion groove extends to the rear surface from a first end of the right side surface connected to the front surface.

5. The buckle of claim 1 , wherein the insertion groove extends through the front surface, the right side surface and the rear surface.

6. The buckle of claim 1 , wherein a projection is formed on the sliding part, and at least one of the flat surface and the bottom surface is provided with a fixing groove into which the projection formed on the sliding part is inserted and fixed.

7. The buckle of claim 6 , wherein the fixing groove is formed at a position closer to the front surface than the rear surface.

8. The buckle of claim 6 , wherein the fixing groove is formed at a position closer to the rear surface than the front surface.

9. A buckle comprising:

a buckle body and a whistle, the buckle body having a plurality of first portions for either one or both of attaching or receiving respective belt portions, the buckle body having a second portion distinct from each of the first portions and to which the whistle is detachably coupled;

wherein said second portion allows slidable detachment of the whistle from said buckle body while said respective belt portions are received or attached at said first portions;

wherein all belt portions received or attached at the buckle are received or attached by said first portions independent of a coupling state between the whistle and the second portion: and

wherein the buckle body further comprises:

a male latch comprising one of the first portions and configured to be connected to the first belt end; and

a female receptacle comprising another of the first portions, being configured to be connected to the second belt end and being configured to receive and fix the male latch.

10. The buckle of claim 9 , wherein the sliding part is formed on the male latch or the female receptacle.

11. The buckle of claim 9 , wherein the male latch is configured to be separated from the female receptacle by pressing on an outwardly biased portion of the male latch to move the outwardly biased portion into the same position as when the male latch is received in the female receptacle.

12. The buckle of claim 9 , wherein the female receptacle comprises a pressing unit on an outer surface of the female receptacle, and the male latch of the buckle body is configured to be separated from the female receptacle by actuating the pressing unit formed on the outside of the female receptacle.

13. A buckle comprising;

a buckle body and a whistle, the buckle body having, a plurality of first portions for either one or both of attaching or receiving respective belt portions, the buckle body having a second portion distinct from each of the first portions and to which the whistle is detachably coupled;

wherein said second portion allows slidable detachment of the whistle from said buckle body while said respective belt portions are received or attached at said first portions;

wherein all belt portions received or attached at the buckle are received or attached by said first portions independent of a coupling state between the whistle and the second portion; and

wherein a sliding motion for said slidable detachment occurs in a direction orthogonal to a separation direction.

14. A buckle comprising:

a buckle body and a whistle, body having a plurality of first portions for either one or both of attaching or receiving respective belt portions, the buckle body having a second portion distinct from each of the first portions and to which the whistle is detachably coupled:

wherein said second portion allows slidable detachment of the whistle from said buckle body while said respective belt portions are received or attached at said first portions;

wherein all belt portions received or attached at the buckle are received or attached by said first portions independent of a coupling state between the whistle and the second portion; and

wherein the buckle body comprises a male latch member forming one first portion of the plurality of first portions,

and a female receptacle member comprising another first portion of the plurality of first portions, the male latch member inserted into and coupled to the female receptacle member to achieve a locked state, and wherein one member of either the male latch member and female receptacle member further comprises the second portion, wherein said second portion is a distinct coupling independent of the male latch member to female receptacle member coupling, said distinct coupling allowing slidable detachment of the whistle from said one member while the buckle is in the locked state.

15. The buckle of claim 14 , wherein each one member of said male latch member and female receptacle member comprise a portion for coupling to a belt.