Non-rotatable enclosing buckle of fabric article

A not rotatable enclosing buckle of fabric article, including a female buckle body formed with a shaft hole passing through a bottom end thereof and a male buckle body including a main body and a nail post upward projecting from the main body. The nail post penetrates through the fabric article and inserting into the shaft hole of the female buckle body so as to latch the male and female buckle bodies on the fabric article. A stem of the nail post is formed with at least one rib. The rib and the longitudinal axis of the stem contain an angle other than 90 degrees. The rib defines a maximum outer circumference of the stem, whereby the rib meshes with the peripheral wall of the shaft hole to prevent the male and female buckle bodies from rotating relative to each other.

BACKGROUND OF THE INVENTION
 The present invention relates to an enclosing buckle of fabric article, and
 more particularly to an enclosing buckle which can be latched on a fabric
 article without rotation.
 FIG. 1 shows a conventional baseball hat or leisure hat. The hat body 10 is
 made of multiple fabric pieces 12 by stitching. The center of the hat body
 is latched with an enclosing buckle 14 for covering the seams of the
 fabric pieces 12 and beautifying the appearance of the hat body.
 FIG. 2 shows the structure of a conventional enclosing buckle 20 which
 includes a buckle body 22 and a buckle seat 24. The buckle body 22 has a
 post section 26 Penetrating through the hat body 25 to insert into a hole
 28 of the buckle seat so as to latch the enclosing buckle on the hat body.
 FIGS. 3 and 4 show two other conventional enclosing buckle structures
 designed by the inventor. In FIG. 3, the enclosing buckle 30 has a female
 buckle body 32 wrapped by a decorative cloth 34. A fastening member 35 is
 used to fix the inner periphery of the decorative cloth 34. The enclosing
 buckle 30 further has a male buckle body 36 having a cylindrical post
 section 37 which penetrates through the hat body 38 to insert into the
 hole 33 of the female buckle body, In FIG. 4, the enclosing buckle 40 has
 a male buckle body 46 having a cylindrical post section 47 which
 penetrates through the hat body 48 to insert into the hole 43 of the
 female buckle body 42. A cover body 45 with a decorative cloth 44 covers
 the female buckle body 42.
 The above enclosing buckles 20, 30, 40 all have a common shortcoming. With
 FIG. 4 exemplified, after the post section 47 of the male buckle body 46
 is inserted into the hole 43 of the female buckle body 42, the male and
 female buckle bodies are latched with each other and locked on the hat
 body 48 without detachment. However, the post section 47 is cylindrical so
 that the post section 47 is rotatable within the hole 43. Therefore, the
 male and female buckle bodies 42, 46 will be rotated relative to each
 other. As a result, the male and female buckle bodies can be hardly firmly
 latched on the hat body without loosening.
 SUMMARY OF THE INVENTION
 It is therefore a primary object of the present invention to provide an
 enclosing buckle of fabric article in which the male and female buckle
 bodies can be latched on the fabric article without rotating relative to
 each other.
 It is a further object of the present invention to provide the above
 enclosing buckle which can be latched on the fabric article without
 rotation.
 The present invention can be best understood through the following
 description and accompanying drawings wherein:

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
 Please refer to FIG. 5. According to a first embodiment, the enclosing
 buckle 50 of the present invention includes a female buckle body 60 and a
 male buckle body 70. The female buckle body 60 is made of plastic material
 by injection molding. The female buckle body is formed with a stepped
 shaft hole 64 having an upper section with larger diameter defining a
 shoulder section 66.
 The male buckle body 70 includes a disc-shaped main body 72 and a nail post
 74 and a penetrating post 73 upward projecting from the top face of the
 main body 72. The top end of the nail post 74 is disposed with a conic
 head section 75 with larger diameter. The stem of the nail post is formed
 with several longitudinal ribs 76. In this embodiment, as shown in FIG. 6,
 the stem of the nail post 74 is cylindrical and the ribs 76 are formed on
 the circumference of the stem at predetermined intervals. The ribs project
 from the stem to define a maximum outer circumference. The outer edge of
 each rib is sharp. The penetrating post 73 has a sharp top end.
 The enclosing buckle 50 further includes a fastening member having a
 bowl-like cover body 80. The cover body 80 has a top convex face 82 and a
 bottom concave face 84.
 The enclosing buckle 50 further includes a decorative cloth 85 wrapping the
 convex face 82 of the cover body 80. Referring to FIG. 7, the end of the
 decorative cloth 85 is folded into the concave face 84 of the cover body.
 The cover body 80 together with the decorative cloth 85 covers the top
 arch face 61 of the female buckle body 60 with the decorative cloth
 wrapping the periphery of the female buckle body.
 When assembled, the cover body 80 with the decorative cloth 85 wraps the
 outer periphery of the female buckle body 60. The nail post 74 of the male
 buckle body 70 penetrates the hat body 90 from lower side thereof and
 upward inserts into the shaft hole 64 of the female buckle body. The
 bottom edge of the head section 75 of the nail post is engaged with the
 shoulder section 66. As shown in FIG. 7, the male and female buckle bodies
 are mated and latched with each other without detachment. Therefore, the
 enclosing buckle is locked on the hat body 90 with the penetrating post 73
 penetrating into the hat body.
 The nail post 74 is inserted into the shaft hole 64 to latch the male and
 female buckle bodies 60, 70 with each other. Thereafter, the ribs 76
 around the stem of the nail post are forced into the peripheral wall of
 the shaft hole as shown in FIG. 8. Therefore, the inner wall of the shaft
 hole is pressed and deformed by the ribs to achieve a meshing effect
 between the ribs 76 and the shaft hole 64. Accordingly, the male and
 female buckle bodies are engaged with each other without relative
 rotation. The penetrating post 73 penetrates into the hat body to prevent
 the enclosing buckle from rotating relative to the hat body.
 FIG. 9 shows another preferred embodiment of the present invention, in
 which except the nail post 74 of the male buckle body 70, all the parts of
 this embodiment are identical to those of the above embodiment. The nail
 post 74 has a rectangular cross-section. The four corners of the nail post
 74 are longitudinal ribs 76 formed on the stem of the nail post. The ribs
 76 define a maximum outer circumference of the stem for meshing with the
 shaft hole.
 In practice, the cross-section of the stem of the nail post 74 can
 alternatively have a triangular or pentagonal or other polygonal shape.
 FIGS. 10 and 11 show still another preferred embodiment of the enclosing
 buckle 100 of the present invention, in which the bottom of the female
 buckle body 110 is formed with an inward extending recess 112. A
 projecting post 114 downward extends from the recess 112. The projecting
 post 114 is formed with a shaft hole 116 with unified diameter.
 The nail post 122 of the male buckle body 120 is formed with several ribs
 124. After the nail post 122 penetrates the hat body 140 to be inserted
 and located in the shaft hole 116, the inner wall of the shaft hole 116 is
 expanded and deformed by the head section 126 of the nail post 122.
 Therefore, the bottom edge of the head section 126 is engaged in the shaft
 hole to prevent the nail post from detaching from the projecting post.
 The fastening member 130 is a ring body fitted around the projecting post
 114. After the decorative cloth 135 wraps the outer periphery of the
 female buckle body 110, the fastening member 130 binds the periphery of
 the decorative cloth 135 in the recess 112.
 After the male and female buckle bodies are mated and latched with each
 other, the ribs 124 of the nail post 122 will mesh with the inner wall of
 the shaft hole 116 to prevent the male and female buckle bodies 110, 120
 from rotating relative to each other. Also, the penetrating post 127 of
 the male buckle body 121 penetrates into the hat body 140.
 According to the above arrangement, after the male and female buckle bodies
 are latched with each other, they cannot be rotated relative to each
 other. Therefore, the enclosing buckle can be firmly locked without
 loosening or detaching from an article. Furthermore, the penetrating post
 of the male buckle body penetrates into the hat body so as to prevent the
 enclosing buckle from rotating relative to the hat body.
 In practice, the angle contained by the ribs and the longitudinal axis of
 the nail post can be a predetermined angle other than 90 degrees. The
 predetermined angle enables the nail post to mesh with the inner wall of
 the shaft hole without rotation. In addition, the shaft hole of the female
 buckle body is not limited to the above two embodiments as shown in the
 drawings. For example, the shaft hole 64 of the first embodiment is not
 necessary to pass through the top section of the female buckle body and it
 is not necessary to form the shoulder section 66 in the shaft hole 64.
 Similarly, the shaft hole 116 of the second embodiment can pass through
 the top section of the female buckle body or be formed with a shoulder
 section.
 The above embodiments are only used to illustrate the present invention,
 not intended to limit the scope thereof. Many modifications of the above
 embodiments can be made without departing from the spirit of the present
 invention.