Belt buckle and method for producing a belt buckle

1. A belt buckle comprising:

a. an insertion part having at least one belt opening for guiding a belt and an insertion appendage extending in a direction of insertion with holding catches protruding at both sides in a perpendicular direction,

b. a receiving part with a basic body and at least a belt opening for guiding a belt and with an insertion opening, beginning at an inserting side of the basic body for inserting the insertion appendage of the insertion part in the direction of insertion,

c. latches pivotally mounted to the basic body, which in a locking position in an inserted state of the receiving part and the insertion part cooperate with the holding catches of the insertion appendage of the insertion part and retain the insertion appendage in the insertion opening of the receiving part,

d. the insertion opening beginning at the inserting side of the basic body and forming a penetrating opening penetrating the basic body to the belt opening, and

e. guiding surfaces being provided in the basic body which cooperate with edge surfaces of the two holding catches with the two edge surfaces pointing in the perpendicular direction, and the guiding surfaces limiting the penetrating opening of the basic body at both sides in the perpendicular direction in the area the penetrating opening opens into the belt opening,

wherein a wall, located between a lateral surface of the receiving part and the penetrating opening through the basic body, comprises first and second recesses, beginning at the belt opening in an area adjacent to lateral edges of a window, which is formed by the penetrating opening extending through the basic body into the belt opening.

2. A belt buckle according to claim 1 , wherein the guiding surfaces are located in planes with normal surfaces thereof being essentially aligned parallel in reference to the perpendicular direction.

3. A belt buckle according to claim 1 , further comprising a step on the insertion appendage having edge surfaces pointing in the perpendicular direction and cooperating with edge surfaces of guiding recesses of the basic body beginning at the inserting side of the basic body of the insertion part.

4. A belt buckle according to claim 3 , wherein the edge surfaces of the insertion appendage and the edge surfaces of the guiding recesses cooperating therewith comprise normal surfaces essentially positioned parallel in reference to the perpendicular direction.

5. A belt buckle according to claim 1 , wherein the insertion appendage of the insertion part protrudes from the entrance of the penetrating opening into the belt opening, in the state inserted in the receiving part, and projects into the belt opening.

6. A belt buckle according to claim 1 , wherein the latches in their locking positions are acted upon by spring elements.

7. A belt buckle comprising:

a. an insertion part having at least one belt opening for guiding a belt and an insertion appendage extending in a direction of insertion with holding catches protruding at both sides in a perpendicular direction,

b. a receiving part with at least a belt opening for guiding a belt and with an insertion opening, beginning at an inserting side of the basic body for inserting the insertion appendage of the insertion part in the direction of insertion,

c. latches pivotally mounted to the basic body, which in a locking position in an inserted state of the receiving part and the insertion part cooperate with the holding catches of the insertion appendage of the insertion part and retain the insertion appendage in the insertion opening of the receiving part,

d. the insertion opening beginning at the inserting side of the basic body and forming a penetrating opening penetrating the basic body to the belt opening, and

e. guiding surfaces being provided in the basic body which cooperate with edge surfaces of the two holding catches with the two edge surfaces pointing in the perpendicular direction and the guiding surfaces limiting the penetrating opening of the basic body at both sides in the perpendicular direction in the area the penetrating opening opens into the belt opening,

wherein the insertion appendage of the insertion part protrudes from the entrance of the penetrating opening into the belt opening, in the state inserted in the receiving part, and projects into the belt opening.

8. A belt buckle comprising:

a. an insertion part having at least one belt opening for guiding a belt and an insertion appendage extending in a direction of insertion with holding catches protruding at both sides in a perpendicular direction,

b. a receiving part with at least a belt opening for guiding a belt and with an insertion opening, beginning at an inserting side of the basic body for inserting the insertion appendage of the insertion part in the direction of insertion,

c. latches pivotally mounted to the basic body, which in a locking position in an inserted state of the receiving part and the insertion part cooperate with the holding catches of the insertion appendage of the insertion part and retain the insertion appendage in the insertion opening of the receiving part,

d. the insertion opening beginning at the inserting side of the basic body and forming a penetrating opening penetrating the basic body to the belt opening, and

e. guiding surfaces being provided in the basic body which cooperate with edge surfaces of the two holding catches with the two edge surfaces pointing in the perpendicular direction and the guiding surfaces limiting the penetrating opening of the basic body at both sides in the perpendicular direction in the area the penetrating opening opens into the belt opening,

wherein a step on the insertion appendage projects from a base of the insertion appendage in a projection direction, which is perpendicular to the direction of insertion and perpendicular to the perpendicular direction, and has edge surfaces which are aligned parallel to the direction of insertion and point in the perpendicular direction, and

wherein the edge surfaces of the step cooperate with edge surfaces of a guiding recess which is provided in a wall delimiting the penetrating opening in the projection direction on a first side, wherein the guiding recess begins at the inserting side of the basic body of the insertion part.