Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H1/00—Contacts
  • H01H1/58—Electric connections to or between contacts; Terminals
  • H01H1/5805—Connections to printed circuits
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H2223/00—Casings
  • H01H2223/054—Mounting of key housings on same printed circuit

Definitions

• the invention relates to an electrical switch according to the preamble of patent claim 1.
• Such an electrical switch is known for example from DE 42 02 214 Al.
• the switch has a housing in which a contact system is located.
• a serving for switching action on the contact system actuator protrudes on a first side of the housing.
• electrical connections for the contact system protrude out of the housing.
• This switch is only suitable for mounting on the front of a printed circuit board.
• connections can be designed in approximately U-shaped, so that they are located on the housing to save space. It may be advisable that the connections for the circuit board are angled at approximately 180 °, so that they point outside of the switch in the direction of its actuator upwards. Appropriately, the connections consist of a flat material with a rectangular cross section, so that they can be produced in a simple manner as a stamped and bent part. If the connections consist of solder connections, then for easy soldering, the connections can change into two plug connections at their end assigned to the first side. In this case, further suggests that the terminals are soldered to pads on a circuit board.
• the circuit board has an opening, such that the switch is mounted on the back of the circuit board, and that the actuator protrudes through the opening to the front of the circuit board. Then the terminals, with their plug-in connections, at the pads from the back of the circuit board to the front through.
• the terminals can be soldered in a simple manner on the front of the circuit board with the pads.
• further electrical and / or electronic components arranged on the front side of the printed circuit board can be soldered in the same soldering process.
• guide pins are located on the housing, which protrude from the first side of the housing in approximately vertical. When mounting the switch to the circuit board, the guide pins engage in corresponding holes on the circuit board for centering the housing.
• support arms are laterally on the housing.
• the support arms are directed to the first side, that rest after mounting the housing to the circuit board, the support arms elastically resiliently on the back of the circuit board.
• the support arms ensure that the switch is braced without play against the circuit board and also contribute to the relief of the solder joints.
• connection extends from the back of the housing to the front, the connection has a certain flexibility with conventional dimensions.
• For mechanical stabilization of the angled terminal is taken in a housing part in a further embodiment.
• For the housing part offers a circumferential housing collar, which is located on the first side of the housing to.
• the electrical switch according to the invention is particularly suitable for an electrical appliance, wherein the switch is mounted on a circuit board located in the electrical appliance, for example by means of fastening and soldering.
• the body of the switch is here behind the circuit board, the switch can be actuated through a correspondingly large bore in the circuit board.
• the circuit board for example, a Be assigned control panel on the electrical appliance, such that a manually operable by the user key o. The like. Acts on the actuator in the control panel.
• the circuit board with the front side can be arranged very close to the surface of the electrical appliance, since the housing of the relatively large-sized switch, which serves as a main power switch, is located on the back of the circuit board in the interior of the electrical appliance.
• the control panel can then have a screen for covering the printed circuit board. Furthermore, light-emitting diodes o. The like. Be arranged to illuminate the control panel on the front of the circuit board. Due to the proximity of the circuit board to the surface of the electrical device excellent illumination of the control panel is ensured. It is thus possible, in addition to the relatively large main power switch, small and flat components such as SMD (Surface Mounted Device) light-emitting diodes (LEDs) and short-stroke keys directly and without long transmission elements for the control of the electrical appliance use and the distance of the PCB to Nevertheless, the device aperture should be kept low.
• SMD Surface Mounted Device
• the distance between the circuit board and the device panel can be kept low despite the inevitably large-sized switch.
• a good as well as energy-saving illumination of a user interface associated with the switch can be realized.
• FIG. 2 shows the electrical switch from the direction II in FIG. 1, the switch being mounted on a printed circuit board, FIG.
• Fig. 3 seen the electrical switch from direction III in Fig. 1 and
• Fig. 4 shows a detail of the circuit board in plan view.
• the housing 2 is shown broken away in Fig. 1 in the region of the right-hand terminal 6 on the second side 4 in a schematic manner.
• the terminals 6 are configured approximately U-shaped.
• the terminal 6 is designed angled approximately at 180 °, so that the terminal 6 in the direction of the actuator 5 on the first page 3 shows. Of course, the terminal 6 may be angled with appropriate design in a different way, for example, by 90 °.
• the terminals 6 are made of a flat material having a rectangular cross-section, which will be apparent from the common consideration of Fig. 1 and 2.
• At her the first page 3 associated end go the terminals 6 in two plug-in connections 7, 7 ', as can be seen in Fig. 2.
• the switch 1 can be mounted on a printed circuit board 8 according to FIG. 2.
• the terminals 6 are formed as solder terminals, so that the terminals 6 are soldered to visible in Fig. 4 pads 9 on the circuit board 8.
• latching and / or snap hook 14 For the attachment of the switch 1 to the circuit board 8 serve in Fig. 1, shown latching and / or snap hook 14.
• the latching and / or snap hook 14 are located on the housing 2, namely the side of the housing 2, and are approximately parallel to Actuator 5 and arranged on the first side 3 projecting, which can be seen with reference to FIG. 2.
• the housing part 18 is a circumferential housing collar located on the first side 3 of the housing 2. The terminals 6 are held in the housing collar 18, that the plug-in terminals 7, T protrude from the housing collar 18 for soldering in the circuit board 8.
• the electrical switch 1 is particularly suitable for arrangement in a control panel for an electrical appliance.
• the switch 1 is mounted on the circuit board 8, which in turn is assigned to the control panel on the electrical appliance, in such a way that a manually operable by the user key o. The like.
• the control panel on the actuator 5 of the switch 1 acts. Due to the arrangement of the housing 2 of the switch 1 on the rear side 11 of the circuit board 8 in the manner of a "back-PCB mounting", the circuit board 8 can be arranged close to the surface of the electrical appliance In this case, it is advisable to arrange on the front side 10 of the printed circuit board 8 light-emitting diodes or the like for illuminating the control panel.

Landscapes

• Physics & Mathematics (AREA)
• Electromagnetism (AREA)
• Switch Cases, Indication, And Locking (AREA)
• Push-Button Switches (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

Family

ID=35447797

Family Applications (1)

Country Status (5)

Families Citing this family (2)

Citations (4)

Family Cites Families (1)

• 2005
  • 2005-09-21 SI SI200531694T patent/SI1794767T1/sl unknown
  • 2005-09-21 ES ES05785257T patent/ES2403056T3/es active Active
  • 2005-09-21 WO PCT/EP2005/010161 patent/WO2006034803A1/de active Application Filing
  • 2005-09-21 CN CN2005800329126A patent/CN101053049B/zh active Active
  • 2005-09-21 EP EP05785257A patent/EP1794767B1/de active Active

Patent Citations (4)

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