Apparel – Guard or protector – For wearer's head
Reexamination Certificate
2001-04-20
2001-11-13
Lindsey, Rodney M. (Department: 3765)
Apparel
Guard or protector
For wearer's head
C002S183000
Reexamination Certificate
active
06314588
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a ring band adjustment structure of a crash helmet and, more particularly, to a structure, whereby the ring band can be adjusted once to accomplish the operation of locating by turning.
BACKGROUND OF THE INVENTION
It is necessary to wear a crash helmet when riding a bicycle or a motorcycle. A ring band is provided in the crash helmet to be located and matched at the brow of a user. If the ring band is not an adjustable structure, it cannot apply to people having different sizes of heads. Several kinds of ring band adjustment structures have been proposed to let ring bands be adjustable.
As shown in
FIG. 1
, a fixing seat
1
and a cover sheet
2
are provided in a ring band adjustment structure. A pair of adjusters
4
are connected to two end portions of a ring band
3
. The fixing seat
1
is a bar-shaped box with two openings
11
and
12
on two side faces thereof to be inserted by two end portions
31
and
32
of the ring band
3
, respectively. The end portion
31
of the ring band
3
uses a pair of locating holes
33
to lock a pair of locating posts
41
of one of the adjusters
4
. The other end portion
32
of the ring band
3
also uses a pair of locating holes
34
to lock a pair of locating posts
41
of the other adjuster
4
. The pair of adjusters
4
respectively have guide posts
42
, which protrude into guide grooves
21
and
22
at two sides of the cover sheet
2
covering an opening of the outer surface of the fixing scat
1
. An insertion post
44
on an inner face of a joining sheet
43
of the guide post
42
is inserted into a post hole of the guide post
42
for locating.
Each of the adjusters
4
has a slide groove
47
to be extended into by a slide bar
46
. The slide bar
46
at each side penetrates into a bottom cavity
13
or
14
of the fixing seat
1
. A fixing tooth block
49
of an upper end portion of the slide bar
46
joins a rack
15
or
16
of an inner face of the fixing seat
1
. The slide bar
46
has a spring
48
at an inner end portion thereof to contact a bottom face of the slide groove
47
. A small shielding sheet
45
is provided outside the slide groove
47
. Each of the adjusters
4
has a groove
40
on a back face thereof to be penetrated through by the rack
15
or
16
. The cover sheet
2
has a central hole
23
so that a screw
24
can penetrate therethrough to join a screw hole of a central post
17
of the fixing seat
1
, thereby completing the whole assembly action.
Although the above prior art has the cover sheet to accommodate the whole adjustment structure, because the fixing seat needs to be fixedly joined with the cover sheet, a joining structure must be provided between them. Because they have the same length and width, some material will be wasted, thus increasing the cost. Moreover, two ends of the ring band are locked at locating posts of an adjustment seat in the connection seat via through holes. The fixing effect of this kind of joining is not good so that other processing procedures must be matched, e.g., riveting the connection posts at the ring band. Therefore, the production cost is increased, and the manufacturing and assembling time is also increased. Additionally, the locating of the prior art adjuster can only be controlled by sense, resulting in inconvenient use. Furthermore, the adjuster has a large number of components, resulting in inconvenience in manufacturing and assembling. The present invention aims to resolve the above problems in the prior art.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a ring band adjustment structure of a crash helmet, which has less components, can be adjusted for locating more easily, and can match the head of a user more tightly. By turning only once, two end portions of the ring band can be moved toward or away from each other. Moreover, economy and exactness in use can be achieved. Because of decreased number of components, use is more convenient, the whole cost is reduced, and the assembly action is faster. In other words, the present invention is more economical than the prior art structure in terms of material cost and assembly cost. Furthermore, a fairly convenient control and adjustment mechanism is provided in the present invention so that the ring band can be driven by turning to accomplish the operation of adjustment, resulting in more convenient use for the user.
To achieve the above object, the present invention comprises a ring band, a connection seat, a guide element, an adjuster, a fixing element, and a locating element. The ring band has a long groove disposed at each end portion thereof. A dentation is formed above the long groove of one end portion, and a dentation is formed below the long groove of the other end portion. The two end portions of the ring band arc inserted into two end faces of the connection seat. The guide element is inserted from a back face of the connection seat to penetrate through the pair of long grooves. A tooth portion of the guide element joins the dentations of the two long grooves. The fixing element passes a through hole in the guide element to join the adjuster so that the adjuster can rive the guide element to turn. A locating sheet is sandwiched between the adjuster and the guide element for locating so that the adjuster can only turn a tooth once.
The various objects and advantages of the present invention will be more readily understood from the following detailed description when read in conjunction with the appended drawing, in which:
REFERENCES:
patent: 2205741 (1940-06-01), Bowers
patent: 2205742 (1940-06-01), Bowers
patent: 2926406 (1960-03-01), Edwards et al.
patent: 3214809 (1965-11-01), Edwards
patent: 3325824 (1967-06-01), Donegan
Lindsey Rodney M.
Rosenberg , Klein & Lee
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