Be applied to the bus cable accommodating apparatus of falt bed scanner
Technical field
The present invention relates to a kind of bus cable accommodating apparatus that is applied to falt bed scanner, refer to a kind of bus cable accommodating apparatus that is applied in the falt bed scanner to be electrically connected the winding displacement of the scanning module (carriage) that includes optics and photoelectric conversion component and circuit main board especially.
Background technology
Winding displacement (Fat Flexible Cable; Be called for short FFC) be connecting line commonly used in a kind of electronic installation, suitable wiring can be provided in narrow space.In falt bed scanner, the scanning module (carriage) that scans that moves around is to be electrically connected with circuit main board by winding displacement.See also Figure 1A and Figure 1B, its be respectively a falt bed scanner on look schematic diagram and side-looking generalized section.Falt bed scanner generally comprises a loam cake (not shown) and a lower house 10, installing one scan module 11, one scan module driving mechanism 12, circuit main board 13 and a winding displacement 14 in lower casing 10 bodies.This scanning module 11 is subjected to the drive of the motor gear group 121 of this scanning module driving mechanism 12, thereby and move by a transparent scanning platform 15 belows along track 122, so that file or the photo that is placed on this scanning platform scanned.This scanning module 11 when mobile still by winding displacement 14 keep with circuit main board 13 between be electrically connected, to carry out the signal transmission.Referring to Figure 1B, traditional winding displacement connected mode is after winding displacement 14 doublings, again winding displacement 14 two ends to be electrically connected on scanning module and circuit main board respectively.Though this connected mode is simple, be easy to just expose its shortcoming in actual applications.
Fig. 2 produces the schematic diagram of friction for traditional winding displacement connected mode makes winding displacement and scanning platform, referring to Fig. 2.In the process that scanning module 11 moves, winding displacement 14 can stretch thereupon or be crooked.When winding displacement 14 bendings, may produce friction with this transparent scanning platform 15 (being generally glass).Especially the design for product thickness (for example is equipped with contact image sensor (Contact Image Sensor for the scanner of more and more thinner trend development; Abbreviation CIS) scanner of scanning module is more and more), shorter and shorter distance will make this winding displacement 14 bigger with the chance of these scanning platform 15 frictions, so dirty will being easy to because of friction is bonded on the scanning platform 15 on this winding displacement 14, so with serious image scan quality.
In view of this, the invention provides a kind of bus cable accommodating apparatus that is applied to falt bed scanner, can make scanner in the process of work, avoid winding displacement and scanning platform to produce friction, and cause the real genus of the dirty bus cable accommodating apparatus that is applied to falt bed scanner of scanning platform necessary.
Summary of the invention
Technical problem to be solved by this invention aims to provide a kind of bus cable accommodating apparatus that is applied to falt bed scanner, makes scanner in when work, avoids winding displacement and scanning platform to produce rubbing or contacts and make scanning platform dirty.
Above-mentioned purpose is achieved in that a kind of accommodation device of winding displacement, be applied in the falt bed scanner, first end of this winding displacement is electrically connected on the scanning module, second end is electrically connected on the circuit main board, it is characterized in that, this bus cable accommodating apparatus includes a frame, this frame includes a cavity, and the connecting hole and the telescopic hole that are communicated with respectively with this cavity, this winding displacement is housed inside in this cavity with the coiling shape, wherein, first end of this winding displacement is electrically connected with scanning module by telescopic hole, and second end is electrically connected with circuit main board by connecting hole, wherein, when this scanning module when the direction away from this frame moves, first end of this winding displacement can be subjected to a pulling force and make it in tension, produces a reciprocal elastic force simultaneously, and when scanning module when moving near the direction of frame, pulling force progressively discharges, and under the effect of elastic force, makes the initial condition of winding displacement recovery at cavity.
Preferably, this cavity is provided with a fixed leg, and this fixed leg is provided with a bayonet socket, but described winding displacement plug-in card is in this bayonet socket.
Preferably, described frame has an opening, and this opening is communicated with this cavity, is wired in this cavity in order to place this.
Preferably, this cavity is a cylindrical structure, and described connecting hole is arranged at this cylindrical bottom, and described telescopic hole is arranged at this cylindrical side.
Preferably, this bayonet socket and connecting hole are vertical mutually also to be communicated with so that second end of described winding displacement can by this bayonet socket with and the connecting hole that is attached thereto be electrically connected with circuit main board.
Preferably, this frame is fixed in the scanner lower house by a support.
Preferably, described fixed leg and this cavity can be one-body molded.
Preferably, this winding displacement is the flexible flat winding displacement.
According to above-mentioned structure, main feature of the present invention is by a frame is set in the lower house of scanner, this frame includes a cavity, winding displacement is housed inside in the cavity with the coiling shape, the telescopic hole and the connecting hole that are communicated with cavity respectively are set, telescopic hole be in vertical distribution with connecting hole, more in cavity, be provided with one with the vertical bayonet socket that communicates of connecting hole.First end of winding displacement and second end are electrically connected with scanning module and circuit main board with connecting hole by telescopic hole respectively, and when second end of winding displacement is electrically connected with circuit main board by connecting hole, because winding displacement direction and connecting hole are in vertical state, so must be after the direction of connecting hole be folding with winding displacement, be electrically connected with circuit main board by connecting hole again, simultaneously the winding displacement burst be stuck in this bayonet socket place.In addition, also be provided with a support, frame is fixed in the scanner lower house by support.
Scanning module moves back and forth under the drive of CD-ROM drive motor, when scanning module when the direction away from this bus cable accommodating apparatus moves because winding displacement itself has elasticity, and the one end is fixed on the circuit main board, so when an end is subjected to pulling force, the winding displacement reduced radius, the length that corresponding winding displacement discharges increases, and the winding displacement anxiety, and be in level, simultaneously winding displacement also is subjected to an elastic force opposite with direction of pull, and along with the increase of distance, this elastic force is also assembled increase gradually; On the contrary, when winding displacement when moving near the direction of bus cable accommodating apparatus, the anxiety of winding displacement fades away, the elastic force of gathering has also obtained release thereupon, this elastic force forces winding displacement to recover original initial position, is coiled in again in the cavity of frame.In addition, the design of bayonet socket has been avoided when being subjected to pulling force or elastic force, and the place that winding displacement is folded to moves up and down in cavity, has guaranteed the stability of winding displacement folding and unfolding.
The design that the present invention is such has made full use of the winding displacement self characteristics, can take place from the phenomenon that solves winding displacement scraping scanning platform in essence, and simple in structure, be beneficial to production.
Description of drawings
Advancing also below in conjunction with accompanying drawing and example to the present invention, the step describes in detail:
Figure 1A is for looking schematic diagram on the falt bed scanner as also;
Figure 1B be also as the side-looking generalized section of falt bed scanner;
Fig. 2 produces the schematic diagram of friction for traditional winding displacement connected mode makes winding displacement and scanning platform;
Fig. 3 is applied to the structural representation of the bus cable accommodating apparatus of falt bed scanner for the present invention;
Fig. 4 is applied to the front view of the bus cable accommodating apparatus of falt bed scanner for the present invention;
Fig. 5 A is the schematic side view during away from the frame of taking in winding displacement for the scanning module among the present invention; And
Fig. 5 B is the schematic side view during near the frame of taking in winding displacement for the scanning module among the present invention.
Embodiment
Fig. 3 is for the structural representation of the bus cable accommodating apparatus of falt bed scanner of the present invention, referring to Fig. 3.A kind of bus cable accommodating apparatus 100 that is applied to falt bed scanner, this bus cable accommodating apparatus 100 includes a frame 101, and frame 101 has a cavity 104 and also opening 105, and this opening 105 is communicated with this cavity 104.Has a support 103 in the bottom of this frame 101.Preferably, this cavity 104 can be one-body molded with this support 103.
Wherein, this cavity 104 is a cylindrical structure, is positioned to offer a telescopic hole 1041 on this cylindrical side, is positioned at this cylindrical bottom surface and offers a connecting hole 1042; This telescopic hole 1041 and this connecting hole 1042 state that is in vertical distribution.
Cavity 104 is provided with a fixed leg 1043, and this fixed leg 1043 is provided with a bayonet socket 1044, and hole clipping 1044 and connecting hole 1042 vertical communicating, the width coupling of the length of bayonet socket 1044 and winding displacement 102.First end 1021 of winding displacement 102 is electrically connected (shown in Fig. 5 A~5B) by connecting hole 1041 with scanning module 200, its second end 1022 is electrically connected (shown in Fig. 5 A~5B) by connecting hole 1042 with circuit main board 300.So, scanner is in when work, scanning module 200 move back and forth the acquisition image information, and by winding displacement 102 image information that is obtained is passed to circuit main board 300 and is converted to digital information.
At winding displacement 102 during by connecting hole 1042, need be with the direction bending of winding displacement 102 to connecting hole 1042, change into vertically with the original direction of winding displacement 102 with the winding displacement 102 that will be close to connecting hole 1042, and make the bending place be stuck in hole clipping 1044 places.
Wherein winding displacement 102 is a flexible flat cable, and it has certain elasticity.
Shown in Fig. 4 or Fig. 5 A, when scanning module 200 under the drive of CD-ROM drive motor 400 when the direction away from this bus cable accommodating apparatus 100 moves, winding displacement 102 can be subjected to a tensile force f, and because winding displacement 102 itself has certain elasticity, when so first end 1021 is subjected to tensile force f, the reduced of the coiling of winding displacement 102, thus make the length of the part that winding displacement 102 is drawn out by telescopic hole 1041 obtain release.Simultaneously, winding displacement 102 is subjected to one and moves opposite elastic force T with it, along with scanning module 200 away from distance big more, elastic force T is also increasing, but also can constantly assemble, and causes in this process winding displacement 102 in tension.
On the contrary, shown in Fig. 5 B, when scanning module 200 when moving near the accommodation device 100 of winding displacement, tensile force f fades away, promptly under elastic force T effect, the elastic force T of gathering forces winding displacement 102 to be coiled in again in the cavity 104, restPoses.
So, in the process that scanning module 200 constantly moves, because winding displacement 102 is in tension always, the state that can keep comparison levels at the winding displacement together 102 of scanning module 200 With circuit main boards 300, can or not contact, and make scanning platform 500 dirty with scanning platform 500 generation frictions.
The above person of thought, only for the present invention's preferred embodiment, when the scope that can not limit the invention process with this, promptly the content of putting down in writing according to claim of the present invention and description of the invention has generally been done simple equivalent and is changed and modify, and all still belongs within the claim of the present invention institute covering scope.In addition, summary part and title only are the usefulness that is used for assisting the patent document search, are not the interest field that is used for limiting the present invention.