IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0574977
(2009-10-07)
|
등록번호 |
US-8201672
(2012-06-19)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
7 |
초록
▼
An enhanced structure for the base with roller and belt of hardshell zipper case is provided, including a hardshell zipper case main body, a plurality of hidden roller units, a retractable belt unit, and an auxiliary wheel set. The hidden roller units and the retractable belt unit are placed inside
An enhanced structure for the base with roller and belt of hardshell zipper case is provided, including a hardshell zipper case main body, a plurality of hidden roller units, a retractable belt unit, and an auxiliary wheel set. The hidden roller units and the retractable belt unit are placed inside the roller housing trench and the belt housing trench located at the bottom of the hardshell zipper case main body. When the hidden roller units are not in use, the roller units are entirely hidden inside the roller housing trench so that the roller unit will not be damaged due to careless handling. To move the hardshell zipper case, the outer rim of the roller units are exposed outside of the surface of the roller housing trench so that the roller units can roll along when moved. The belt of retractable belt unit can be easily pulled out from one end of the bottom of the hardshell zipper case. After surrounding the hardshell zipper case main body with the belt, the belt can be fastened to the other end of the retractable belt unit. In this manner, the belt can be easily pulled out for fastening the case when necessary, and can be retracted when not in use.
대표청구항
▼
1. An enhanced structure for base with roller and belt of hardshell zipper case, comprising: a hardshell zipper case main body, designed as a monolithic piece, further comprising a plurality of roller housing trenches, a belt housing trench and at least an auxiliary wheel trench, said roller housing
1. An enhanced structure for base with roller and belt of hardshell zipper case, comprising: a hardshell zipper case main body, designed as a monolithic piece, further comprising a plurality of roller housing trenches, a belt housing trench and at least an auxiliary wheel trench, said roller housing trenches and said belt housing trench being located respectively at a main body bottom of said hardshell zipper case main body, an auxiliary wheel set being placed inside said auxiliary wheel trench, located at said main body bottom, outer rim of said auxiliary wheel set being convex above surface of back of main body;a plurality of hidden roller units, fastened to inside of said roller housing trenches, said auxiliary wheel set placed inside auxiliary wheel trench being located between said hidden roller units and said main body back, each said hidden roller unit having a roller exposed above surface of said main body bottom when moving, and hidden below surface of said main body bottom when parking;a retractable belt unit, fastened to inside of said belt housing trench;a hardshell lid; andan expanding unit, said expanding unit being connected between said hardshell zipper case main body and said hardshell lid, further comprising an expanding zipper and an expanding part. 2. The enhanced structure as claimed in claim 1, wherein said hidden roller unit further comprises a jacket, a positioning bolt, a positioning bolt slider, a sliding axis, a positioning bolt retractable rod, an upper spring, a lower spring, a roller set and a roller; wherein said jacket further comprising a first positioning bolt fasten hole and a second positioning bolt fasten hole; said positioning bolt retractable rod being placed inside connected said sliding axis and said positioning bolt slider, having said lower spring placed between lower part and said sliding axis and said upper spring placed between upper part and said positioning bolt slider, said positioning bolt being placed on same side of said positioning bolt slider as said first positioning bolt fasten hole and said second positioning bolt fasten hole, all above elements being placed inside said jacket, and bottom of said sliding axis being connected to said roller set with said roller;wherein by pressing said positioning bolt retractable rod, said positioning bolt slider moving up and said positioning bolt retracting, said entire sliding axis able to slide up and down; when said positioning bolt reaching said first positioning bolt fasten hole or said second positioning bolt fasten hole, pressure on said positioning bolt retractable rod being relieved and said upper spring and said lower spring able to position said hidden roller unit to a desired position. 3. The enhanced structure as claimed in claim 2, wherein when said positioning bolt is fastened to said first positioning bolt fasten hole, said roller is exposed above said surface of said main body bottom and can roll, i.e., non-hidden state. 4. The enhanced structure as claimed in claim 2, wherein when said positioning bolt is fastened to said second positioning bolt fasten hole, said roller is hidden under said surface of main body bottom to avoid damage during handling, i.e., hidden state. 5. The enhanced structure as claimed in claim 1, wherein said retractable belt unit further comprises: an outer box, a spring roll, a belt, a first fasten element, a second fasten element, an adjustment element and an outer lid;wherein said spring roll and said belt being placed inside said outer box, said outer lid being fixed to said outer box so as to conceal all above elements placed inside said outer box, one end of said spring roll being fastened to a specific position of said outer box, and the other end of said spring roll being connected to one end of said belt, the other end of said belt being connected to said first fasten element, said adjustment element being placed on a non-specific location of said belt to adjust length of said belt; said second fasten element and said outer lid being fixed to outside of said outer box; pulling said first fasten element also drawing said belt, after pulling said belt out of said outer box to a specific length, said spring roll fixing length of said belt, by drawing said belt around upper part of said hardshell zipper case main body and said hardshell lid to said main body bottom and then engaging said first fasten element to said second fasten element to prevent said hardshell zipper case from cracking; when releasing engagement of said first fasten element and said second fasten element and pulling said belt to a specific strength, said spring roll retracting said belt into said outer box, said outer lid being placed to conceal said entire retractable belt unit and provide protection to said first fasten element and said second fasten element. 6. The enhanced structure as claimed in claim 1, wherein said hardshell zipper case main body and said hardshell lid are made of polypropylene (PP). 7. The enhanced structure as claimed in claim 1, wherein said hardshell zipper case main body and said hardshell lid are made of polycarbonates (PC). 8. The enhanced structure as claimed in claim 1, wherein said hardshell zipper case main body and said hardshell lid further comprise at least an enhancement element, wherein said enhancement element is a spring stripe. 9. The enhanced structure as claimed in claim 8, wherein said enhancement element is located between said hardshell zipper case main body and said expanding unit. 10. The enhanced structure as claimed in claim 8, wherein said enhancement element is placed on both sides of said opening zipper of said hardshell lid.
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