Machine element or mechanism – Mechanical movements – Reciprocating or oscillating to or from alternating rotary
Reexamination Certificate
2001-04-26
2003-05-20
Mai, Lanna (Department: 3637)
Machine element or mechanism
Mechanical movements
Reciprocating or oscillating to or from alternating rotary
C399S211000, C312S319700, C358S497000
Reexamination Certificate
active
06564659
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a belt fixing structure of a scanner, and more particularly to an open-type belt fixing structure that is used to drive the chassis of the scanner to move reciprocally.
2. Description of the Related Art
When the scanner is used, a belt driven by a motor is used to drive the chassis of the scanner to move reciprocally. The connection manner of the belt with the chassis includes a closed type and an open type.
The closed type indicates that each of the two ends of the belt is formed with a loop. With regard to the open type mounting, as shown in
FIG. 9
, one end of the belt
11
is formed with a loop
12
which has a fastening ring
13
serving as a seal. A spring
16
is hooked between the loop
12
and the first base
15
mounted on the bottom housing
14
of the scanner. The belt passes through two guide rollers
18
and
19
on the bottom face of the chassis
17
, and through a rotary wheel
25
. The other end of the belt
11
is also formed with a loop
21
which has a fastening ring
22
serving as a seal. A spring
24
is hooked between the loop
21
and the second base
23
mounted on the bottom housing
14
of the scanner.
In the above-mentioned open type belt fixing structure, it is apparent that, the two ends of the belt
11
have to form the loops
12
and
21
respectively, and each loop
12
and
21
has to be mounted with a fastening ring
13
and
22
to serve as a seal. Consequently, the belt needs to be worked additionally, thereby increasing the cost of fabrication.
SUMMARY Of THE INVENTION
The primary objective of the present invention is to provide an open-type belt fixing structure, wherein the belt can be fixed directly by a locking fit manner, without having to additionally perform a working process, thereby reducing the machining processes, and thereby decreasing the cost of fabrication.
For achieving the above-mentioned objective, a first positioning assembly and a second positioning assembly are respectively mounted on the bottom housing of the scanner. The first positioning assembly defines a first clamping groove, and the second positioning assembly defines a second clamping groove. The belt includes a first end and a second end respectively locked in the first clamping groove of the first positioning assembly and the second clamping groove of the second positioning assembly. The belt can be positioned rigidly by means of the locking and clamping effects between the clamping grooves and the belt.
In the clamping grooves of the first positioning assembly and the second positioning assembly, the side face of the clamping groove is formed with a plurality of locking teeth. After the locking teeth are combined with the tooth profile of the toothed belt, the belt can be locked and positioned.
The first positioning assembly includes a base located opposite to the wall face of the bottom housing of the scanner. The base is spaced from the wall face of the bottom housing with a predetermined distance, thereby forming the clamping groove. The side wall face of the base is formed with a plurality of locking teeth, or the wall face of the bottom housing is formed with a plurality of locking teeth.
The second positioning assembly includes a base that is formed with a clamping groove. The side wall face of the clamping groove is formed with a plurality of locking teeth. The clamping groove is arranged in an oblique manner.
Further benefits and advantages of the present invention will become apparent after a careful reading of the detailed description with appropriate reference to the accompanying drawings.
REFERENCES:
patent: 5319419 (1994-06-01), Ishida et al.
patent: 5804932 (1998-09-01), Yanagisawa
patent: 6108505 (2000-08-01), Hayashi
patent: 6210098 (2001-04-01), Cohn et al.
Anderson Jerry
Avision Inc.
Baxley Charles E.
Mai Lanna
LandOfFree
Belt fixing structure of a scanner does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Belt fixing structure of a scanner, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Belt fixing structure of a scanner will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3047209