Classifications

• • G—PHYSICS
  • G07—CHECKING-DEVICES
  • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
  • G07C5/00—Registering or indicating the working of vehicles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
  • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
  • B41J2/315—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
  • B41J2/32—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads
• • G—PHYSICS
  • G07—CHECKING-DEVICES
  • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
  • G07C7/00—Details or accessories common to the registering or indicating apparatus of groups G07C3/00 and G07C5/00

Definitions

• Tachograph with a cuboid housing and with a printing device
• the invention relates to a tachograph with a parallelepiped-shaped housing and with a printing device, which has a thermal print head and a carrier which can be moved out of the front of the tachograph housing for reloading a tape roll forming the print material supply, and a non-positive connection with the thermal print head, at least during printing, with the print material being interposed has standing, driven by a drive transport roller, the thermal print head in the housing of the tachograph and the transport roller and the drive are arranged in the carrier.
• Tachographs which are not equipped for the use of chart disks as recording media, but rather contain appropriately trained mass storage devices for storing the determined journey and working time data, require suitable printing devices for the documentation in the form of a visually readable document, which must be arranged within the tachograph , since there is generally no space in a cab of a commercial vehicle for the installation of an independent printer corresponding to the tachograph.
• the structural concept mentioned at the beginning, described in DE-U 299 20 901.6, has the advantage of more economical use of space than would be possible using commercially available printing units. This concept also eliminates the need to thread the beginning of the ribbon between the thermal print head and the transport roller, as well as precautions to clear paper jams. Furthermore, the thermal print head can be fixed in position within the housing of the tachograph, so that direct contact with dirt and moisture is largely avoided even when the carrier is moved out of the tachograph.
• the object of the invention is therefore to provide a stable arrangement of a thermal printhead within the housing of a tachograph which meets the conditions mentioned and which takes up little space and can be realized with components which are as simple and simple to assemble as possible.
• the invention provides that a bearing bridge is provided for the mounting of the thermal print head which can be pivoted against the action of at least one spring, and that the bearing bridge is fastened to a cover plate of the housing of the tachograph.
• a preferred embodiment is characterized in that a holder attached to the cover plate is provided for attaching the bearing bridge to the cover plate.
• the preferred exemplary embodiment is distinguished in particular by the fact that the holder is plate-shaped, that tabs provided with through bores are formed on the legs of the bearing bridge, and that pedestals assigned to the tabs and prepared for screw connections are formed on them.
• the holder and the cover plate are seamlessly connected to one another at several points using sheet metal forming technology and also that the holder has a recess corresponding to the bearing bridge and that the bearing bridge is fastened to the holder in such a way that the bearing bridge is in the recess of the Holder engages and point the legs of the bearing bracket away from the cover plate.
• the solution according to the invention has the advantage that the thermal print head can only be arranged on the cover plate of the housing and thus, since no longitudinal or transverse trains are required for attaching the thermal print head within the housing, there is an optimal use of the available installation space.
• the invention enables a secure and stable attachment of the thermal printhead, particularly with a view to the fact that the mounting or attachment of the thermal printhead not only has to support the bearing force on the transport roller but also has to absorb force components directed transversely to the direction of action of the bearing force when the carrier is moved.
• the holder of the bearing bridge serves as a socket, in such a way that when the bearing bridge is fastened, it is clamped to the cover part of the housing and is locked in the direction of movement of the carrier. It should also be emphasized that, due to the fact that the holder is fastened to the cover part of the housing over the largest possible area, it provides a stiffening which is expedient for the attachment of the thermal print head, and that the thermal print head can be replaced in a simple manner.
• Sheet metal connection method is known, a seamless, push button-like connection by material forming. This connection technology undoubtedly meets the requirements for tightness and flatness of the cover part on the outside.
• Figure 1 is a largely schematic side view of a printing device according to the preamble of claim 1, wherein the
• Carrier is designed as a drawer, which is shown open in order to be able to insert a tape roll serving as printing material,
• FIG. 2 shows a representation according to FIG. 1 with the carrier inserted into the tachograph
• FIG. 3 shows a perspective illustration of a holder to be connected to a cover plate of the cover part
• FIG. 4 shows a bearing bracket shown in perspective and used to accommodate the thermal print head in an assembly assignment to FIG. 3,
• Figure 5 is a top view perspective bottom view of a cover part of the housing with built-in thermal print head. 6 shows a partial section along the section line A in FIG. 5.
• a tachograph 1 designed as a built-in device has, as can be seen in FIG. 1, a cuboid housing 2 to which a front wall 3 is assigned.
• the space-saving housing 2, preferably made of sheet metal material, can be connected to a base part 4
• Cover part 5 on which side walls 6 and 7, a rear wall 8 and a cover plate 9 are formed.
• the tachograph 1 on the front of which essentially a display can be observed and various actuating elements and shafts for the data cards assigned to the drivers are accessible, has a printer module with a carrier 10, which can be moved like a drawer, which is closed at the front with a plate 11, which can be designed, especially flush, in the Front surface of the front wall 3 of the tachograph 1 inserts.
• the carrier 10 is assigned, for example, a bistable latching mechanism which, in the event that printing material is to be refilled, can be unlocked and locked by actuating the plate 11, which thus serves as a button.
• a receptacle 12 is formed in the carrier 10 and serves as a loose holder for a tape roll 13 forming the printing material supply. With 14 the winding core of the tape roll 13 is designated. Between the receptacle 12 and the plate 11 of the carrier 10 there is an installation space 15 in which a transport roller 16 and a drive 17 driving it are mounted. With 18 the motor of the drive 17 is designated.
• Printing material is only to be placed loosely over the transport roller 16 and the plate 11, in order to clamp the printing material between the transport roller 16 and the thermal print head 19, the spring-loaded mounting of which is symbolized by the arrow P, when the carrier 10 is pushed in.
• 22 is a thermocouple bar and 23 a heat sink of the thermal print head 19.
• the shaft 24 of the transport roller 16 is expediently pivoted within a certain angle about the axis 25 of the drive 17, so that when the carrier 10 is pushed in, an alignment with the thermal print head 19 that is independent of the guide play of the carrier 10 is possible. It is also expedient to round the front edge of the heat sink 23 facing the transport roller 16 in a suitable manner.
• a holder 26 designed as a sheet metal part according to FIG.
• FIG. 3 is provided for fastening the thermal print head 19 in the housing 2.
• the essentially plate-shaped holder 26 provided with a cutout 27, pedestals 32, 33, 34 and 35 provided with threaded bores 28, 29, 30 and 31 are formed and at least one tongue 36 protruding into the cutout is formed. With 37 is assigned to the tape roll 13 stop bar.
• the holder 26 is connected to the cover plate 9 by means of the sheet metal connection technology mentioned in the introduction to the description. 5 of the resulting elevations are visible in FIG. 5 and designated 38 and 39, a third elevation 40 is shown in FIG.
• a bearing bridge 41 shown in FIG. 4 is designed such that it can be inserted into the recess 27 of the holder 26 with little play, for example.
• the tongue 36 of the holder 26 engages in a recess 42 of the bearing bracket 41 and thus serves to align the two components before they are screwed together.
• 43, 44, 45 and 46 are integrally formed on the bearing bracket 41, provided with through holes 47, 48 and 49 tabs, by means of which the bearing bracket 41 is attached to the holder 26.
• Bores 52 and 53 are formed in the legs 50 and 51 of the bearing bridge 41, which bores serve to attach bearing journals 54 and 55 (FIG. 5) assigned to the thermal print head 19. With 56, 57 and 58 indents are designated, which are provided for the mounting of the thermal print head 19 associated compression springs 59, 60 and 61.
• Guide rails 64 and 65 are formed by means of recesses 62 and 63 provided in the legs 50, 51, on which the shaft 24 of the transport roller 16, which is loaded with the pressing force of the thermal print head 19, is supported.
• the guide rails 64, 65 are provided with wedge surfaces, which are not designated in any more detail, which prevent the shaft 24 from being pushed onto the guide rails 64, 65, which, while simultaneously pivoting the under the Effect of compression springs 59, 60, 61 standing thermal print head 19 is made easier.
• the bushings 24 are not expediently assigned.
• An opening denoted by 66 in the leg 50 serves the thermal print head 19, which engages with an integrally formed finger in the opening 66 as a limit stop in the event that the carrier 10 is pulled out of the tachograph 1.
• the carrier 10 in the cover part 5 is assigned running rails 67 and 68, one running rail 67 being fastened directly to the side wall 6 of the cover part 5, and the other running rail 68 on a stiffening the housing 2, for example also for the Attachment of the display of the tachograph 1 provided, L-shaped structural part 69 is formed.
• 70 represents a ribbon cable assigned to the thermal print head 19. Of the screws used to fasten the bearing bridge 41 to the holder 26, three are visible in FIG. 5 and denoted by 71, 72 and 73.
• FIGS. 5 and 6 and designated 74 bearing arms cooperating with the bearing pins 54 and 55 are formed; one is visible in FIGS. 5 and 6 and designated 74.
• supports 75 and 76 formed on the structural part 69 and supports 77, 78 and 79 formed on the side walls 6 and 7 are provided for fastening a printed circuit board carrying the electronic components of the tachograph 1.
• the supports 77, 78 and 79, together with a slot 80 in the rear wall 8 serve to fasten the base part 4 to the cover part 5 by engaging bolts formed on the base part 4 with the supports 77, 78 and 79 acting as tongues.
• Indents 81 and 82 are provided for locking the front wall 3 to the housing 2.
• FIG. 6 again illustrates the direct and thus space-saving assignment of the bearing bridge 41 to the cover plate 9 of the cover part 5 and the nesting of the detachable bearing bridge 41 with the non-releasable holder 26.
• the holder 26 should be connected to the cover plate 9 over the largest possible area because of the stabilizing function.

Landscapes

• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Electronic Switches (AREA)
• Accessory Devices And Overall Control Thereof (AREA)
• Time Recorders, Dirve Recorders, Access Control (AREA)
• Measuring Fluid Pressure (AREA)
• Common Mechanisms (AREA)
• Ink Jet (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=7952444

Family Applications (1)

Country Status (10)

Families Citing this family (7)

Family Cites Families (6)

• 2001
  • 2001-02-03 DE DE20101836U patent/DE20101836U1/de not_active Expired - Lifetime
• 2002
  • 2002-01-17 EP EP02708296A patent/EP1356434B1/fr not_active Expired - Lifetime
  • 2002-01-17 WO PCT/EP2002/000433 patent/WO2002063571A1/fr active IP Right Grant
  • 2002-01-17 DE DE50207719T patent/DE50207719D1/de not_active Expired - Lifetime
  • 2002-01-17 ES ES02708296T patent/ES2267990T3/es not_active Expired - Lifetime
  • 2002-01-17 AT AT02708296T patent/ATE335259T1/de not_active IP Right Cessation
  • 2002-01-17 PL PL02367516A patent/PL367516A1/xx not_active Application Discontinuation
  • 2002-01-17 KR KR1020037010025A patent/KR100872916B1/ko not_active IP Right Cessation
  • 2002-01-17 BR BR0206970-9A patent/BR0206970A/pt not_active IP Right Cessation
• 2003
  • 2003-07-31 US US10/630,782 patent/US6834950B2/en not_active Expired - Lifetime
  • 2003-08-04 ZA ZA200305994A patent/ZA200305994B/en unknown

Non-Patent Citations (1)

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