EP1863050A1 - Schalteranordnung - Google Patents

Schalteranordnung Download PDF

Info

Publication number
EP1863050A1
EP1863050A1 EP07252136A EP07252136A EP1863050A1 EP 1863050 A1 EP1863050 A1 EP 1863050A1 EP 07252136 A EP07252136 A EP 07252136A EP 07252136 A EP07252136 A EP 07252136A EP 1863050 A1 EP1863050 A1 EP 1863050A1
Authority
EP
European Patent Office
Prior art keywords
button
switch
trigger
lever
knob
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP07252136A
Other languages
English (en)
French (fr)
Other versions
EP1863050B1 (de
Inventor
Zhao Kong
Tiancal Zhang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzhou Cleva Electric Appliance Co Ltd
Original Assignee
Suzhou Cleva Electric Appliance Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Suzhou Cleva Electric Appliance Co Ltd filed Critical Suzhou Cleva Electric Appliance Co Ltd
Publication of EP1863050A1 publication Critical patent/EP1863050A1/de
Application granted granted Critical
Publication of EP1863050B1 publication Critical patent/EP1863050B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H19/50—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand the operating part having four operative positions, e.g. off/two-in-series/one-only/two-in-parallel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/0007—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating documents
    • B02C2018/0023—Switching devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H19/54—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand the operating part having at least five or an unspecified number of operative positions
    • H01H19/60—Angularly-movable actuating part carrying no contacts
    • H01H19/62—Contacts actuated by radial cams

Definitions

  • the present invention relates to a switch mechanism.
  • a commercial switch mechanism such as the one used for a shredder commonly includes a magnetic switch and a trigger switch.
  • the assembly controls different working states of the shredder motor via an electrical path between the magnetic switch, the trigger switch and the motor to control starting and stopping of the motor and to cause instantaneous reverse rotation (reverse point-action) for releasing blockages.
  • the magnetic switch commonly includes a winding, an attraction piece and a lever member. The magnetic force generated by the electrified winding attracts the attraction piece to maintain the conduction state.
  • a lever button is in a fully triggered state. After power interruption or after the electrical path is turned off, the magnetic switch is electrically conductive so that the machine or tool is in the operational state without the lever button being operated.
  • a switch mechanism of this type has several different buttons and the operator must operate two different buttons to achieve one desired function. For example, in order to make the motor reverse rotate, the operator must operate the reverse button and the operating button simultaneously. An operator who uses such a machine for the first time frequently does not know how to achieve a desired function when faced with so many buttons.
  • the present invention seeks to address certain disadvantages referred to above by providing a switch mechanism which is simple to operate and has more comprehensive and reliable performance.
  • the present invention provides a switch mechanism for a tool or machine comprising:
  • the present invention advantageously provides different working states of the motor which are controlled by operating a single rotary knob. This makes operation simple and safe and since the single rotary knob is mounted on the cover of the shredder, there is an increased aesthetic benefit.
  • the first and second buttons of the magnetic switch may be replaced by a single lever button.
  • the first and second buttons may be side-by-side.
  • the magnetic switch may comprise a non-operational frame in which is mounted each of the first and second button.
  • the faceplate may be a substantially annular faceplate.
  • the trigger assembly partially releases the second button and partially depresses the first button.
  • the first button is a stopping button and the second button is an operating button.
  • the switch mechanism further comprises:
  • the first and second sliding slot may be circumferentially disposed along a circle.
  • the first and second sliding slot may be substantially kidney-shaped.
  • the sliding member is a push rod projecting beyond a bottom surface of the rotary knob.
  • the rotary knob defines a longitudinal socket and a resilient member in the socket couples a base of the longitudinal socket with the sliding member to leave the sliding member partly exposed from the socket.
  • the faceplate further defines a second sliding slot and the sliding member is slidable in the second sliding slot between a first delimiting position and a second delimiting position, wherein the trigger assembly triggers the first button of the magnetic switch when the sliding member is located at the first delimiting position of the second sliding slot and the trigger assembly triggers the second button of the magnetic switch and the lever button of the lever switch simultaneously when the sliding member is located at the second delimiting position in the second sliding slot.
  • the first and second sliding slot may be circumferentially disposed along a circle.
  • the first and second sliding slot may be substantially kidney-shaped.
  • the trigger assembly includes: a multi-lobal trigger body connected or coupled to the rotary knob; and a reciprocal positioning cradle adjacent to and engageable with the trigger body.
  • the reciprocal positioning cradle is preferably slotted.
  • the trigger body includes:
  • the third pushing lobe is a pair of pushing lobes axially spaced apart along the shaft in a substantially common radial direction.
  • first pushing lobe and the second pushing lobe extend radially outwardly in a substantially common plane.
  • the cam lobe, the first pushing lobe, the second pushing lobe and the third pushing lobe may be substantially equiangularly disposed about the shaft.
  • the first pushing lobe, the second pushing lobe and the third pushing lobe may be multi-faceted.
  • the first pushing lobe, the second pushing lobe and the third pushing lobe may be substantially triangular.
  • the reciprocal positioning cradle includes a reciprocal base capable of reciprocally biassing the second button of the magnetic switch and a pair of laterally (eg horizontally) spaced apart runners extending rearwardly from an interior face of the reciprocal base, wherein each runner defines a positioning slot, wherein the reciprocal base defines a socket to receive the first button of the magnetic switch.
  • Each runner may be substantially square C-shaped. Between a non-operational surface of the magnetic switch and an exterior surface of the reciprocal base may be mounted one or more resilient biassing members (eg springs).
  • resilient biassing members eg springs
  • At least one of the pair of runners includes a pair of substantially parallel vertically spaced apart latching slots which communicate with the positioning slot, wherein the switch mechanism further comprises:
  • the first resilient biassing member may be a spring.
  • the switch mechanism further comprises:
  • the trigger assembly triggers the first button when the rotary knob is positioned at the first position, the tool or machine is non-operational.
  • the trigger assembly triggers the second button when the rotary knob is positioned at the second position, the tool or machine is operational.
  • the trigger assembly at least partially releases the second button when the rotary knob is positioned at the third position, the tool or machine is operational.
  • the trigger assembly triggers the second button and the lever button simultaneously when the rotary knob is positioned at the fourth position, the tool or machine is in reverse rotation.
  • the lever button is capable of causing the tool or machine to reverse rotate.
  • the present invention provides a shredder comprising a switch mechanism as defined hereinbefore.
  • FIG. 1 Illustrated in Figure 1 is an embodiment of the switch mechanism 5 of the invention mounted in a shredder.
  • the shredder includes a frame 1 and a head portion 2 pivotally attached to the frame 1.
  • a driving motor (not shown) is arranged inside the head portion 2.
  • the head portion 2 defines an inlet 4 for inserting trees to be shredded and the switch mechanism 5 is arranged at an edge of the inlet 4.
  • the switch mechanism 5 is electrically connected to the driving motor via electrical circuitry (not shown) and controls different operational states of the motor. In a first operational state, the motor is stopped. In a second and third operational state, the motor rotates. In a fourth operational state, the motor is in reverse rotation (reverse point-action) to enable removal of a blockage.
  • the switch mechanism 5 includes an annular faceplate 50, a rotary knob 11 rotationally mounted on the faceplate 50 and a switch housing containing various elements (see Figures 3 and 4).
  • the faceplate 50 is mounted on a cover 3 of the head portion 2.
  • a receiving bore 52 is defined in a central portion of the faceplate 50.
  • the mouth of the receiving bore 52 is surrounded by a first lip 500.
  • a second lip 501 is coaxial with the first lip 500 and defined between the first lip 500 and second lip 501 is an annular groove 54.
  • a first sliding slot 49 and a second sliding slot 51 are defined in the annular groove 54.
  • the first and second sliding slots 49, 51 are substantially kidney-shaped.
  • Four labels a, b, c, and d are formed near to the perimeter of the faceplate 50 and the rotary knob 11 may selectively align with each of the four labels a-d to define four operating positions (as described below).
  • the switch housing (see Figures 3 and 4) has a top cover 7 fitted to a bottom cover 9.
  • a conventional magnetic switch 13 having a stopping button 14 and an operating button 16
  • a lever switch 15 having a lever button 18 and a trigger assembly 17 for triggering the magnetic switch 13 and the lever switch 15 are housed in the top and bottom covers 7, 9. Tail portions of the magnetic switch 13 and lever switch 15 are electrically connected to conventional electrical circuitry.
  • a cylindrical through hole 72 is formed in a central portion of the top cover 7.
  • a positioning rib 74 is formed on a top face of the top cover 7 coaxial with the through hole 72 and is positioned in the receiving bore 52 of the faceplate 50.
  • An overload protection member 8 is housed inside the switch housing to automatically shut off the power to the motor when the motor is overloaded.
  • a top end of the overload protection member 8 passes through the substantially square socket 76 and is exposed from the top face of the frame 3.
  • a longitudinal socket 44 is defined in a bottom face of the rotary knob 11 and houses a spring 38 which at a proximal end is attached to the base of the longitudinal socket 44 and at a distal end to a push rod 40 to leave the push rod 40 partially exposed from the longitudinal socket 44.
  • the push rod 40 is slidable in the first sliding slot 49 between a first delimiting position 60 and second delimiting position 62 at opposite ends of the sliding slot 49.
  • the trigger assembly 17 is connected to the rotary knob 11 and selectively triggers the magnetic switch 13 and lever switch 15.
  • the trigger assembly 17 includes a trigger body 19 which is multi-lobal and a reciprocal positioning cradle 21 capable of accommodating the trigger body 19.
  • the trigger body 19 includes a cylindrical main shaft 25.
  • a cam lobe 27 extends radially outwardly from a peripheral surface of the main shaft 25.
  • a first pushing lobe 29 and a second pushing lobe 31 extend radially outwardly in a common plane from a peripheral surface of the main shaft 25.
  • An axially spaced apart pair of third pushing lobes 33 extends outwardly from top and bottom portions respectively of the peripheral surface of the main shaft 25 in a common radial direction (see Figure 8).
  • the cylindrical main shaft 25 extends axially into an intermediate portion 75 having a smaller diameter.
  • the intermediate portion 75 terminates in a rectangular linking portion 35.
  • the intermediate portion 75 is received in the cylindrical through hole 72 of the top cover 7.
  • a rib 37 is formed on a side face of the linking portion 35.
  • a central portion of the rotary knob 11 is equipped with a bore 71 which is divided into top and bottom chambers by a neck 10.
  • the top chamber is adapted to receive a knob cap 12 and the bottom chamber configurationally matches and receives the linking portion 35.
  • a screw 73 is inserted through the top chamber of the bore 71 into the neck 10 and threadedly engages a screw hole 39 of the linking portion 35 to couple the trigger body 19 securely to the rotary knob 11.
  • a positioning hole 41 in communication with the screw hole 39 is defined in a central portion of the base of the trigger body 19.
  • a positioning post 43 projects upwardly from a central portion of the bottom cover 9 into the positioning hole 41 1 thereby permitting the rotary knob 11 to rotate and drive the trigger body 19 to rotate about the positioning post 43.
  • the reciprocal positioning cage 21 is housed in the top and bottom covers 7, 9 adjacent to the trigger body 19.
  • the reciprocal positioning cage 21 includes a reciprocal base 20 and a pair of parallel, horizontally spaced apart runners 22 extending from the reciprocal base 20.
  • Each runner 22 defines a horizontally extending positioning slot 24 with an open end and is substantially square C-shaped.
  • the first and second pushing lobes 29, 31 of the trigger body 19 are slidably received respectively in the positioning slots 24.
  • In the top and bottom surface respectively of one of the runners 22 is a pair of parallel spaced apart latching slots 23 which communicate with the positioning slot 24.
  • a socket 36 In a middle portion of the reciprocal base 20 between the runners 22 is defined a socket 36 in which is received the stopping button 14 of the magnetic switch 13.
  • a substantially C-shaped latch 30 is mounted vertically with its arms in the pair of latching slots 23 and is slidable in the latching slots 23 along the positioning slot 24.
  • a cylindrical finger 32 extends from a base of the C-shaped latch 30.
  • a first resilient biassing spring 33 is attached to a tip of the cylindrical finger 32 and abuts against a wall 44 in the reciprocal base 20.
  • a pair of elongate connecting ribs 26 are formed on the top and bottom face of each runner 22 and slidably engage corresponding elongate receiving slots 28 in the top and bottom covers 7, 9, respectively.
  • a connecting post 46 is formed on one end of each runner 22 either side of the reciprocal base 20. Mounted on each connecting post 46 is a second resilient biassing spring 48. A distal end of the second resilient biassing spring 48 abuts the housing 61 of the magnetic switch 13 (see Figure 10).
  • clockwise rotation of the rotary knob 11 to the second position aligned with label b causes the push rod 40 to slide to the first delimiting position 60 in the first sliding slot 49 and the trigger body 19 to be rotated clockwise so that the cam lobe 27 releases the stopping button 14.
  • the first pushing lobe 29 rotates in the positioning slot 24 to horizontally bias the reciprocal base 20 forward and depress the operating button 16.
  • the electrical circuitry conducts electricity and the motor rotates.
  • the rotary knob 11 is released from position b and the first resilient biassing spring 48 causes the reciprocal positioning cage 21 to be retracted and the push rod 40 to slide along the sliding slot 49 in the counterclockwise direction from the first delimiting position 60 to the second delimiting position 62.
  • the rotary knob 11 rotates counterclockwise to the third position c. Accordingly, the operating button 16 is released from the trigger state and the distance H between the reciprocal base 20 and the housing 61 of the magnetic switch 13 is about 2.5mm (ie the operating button 16 is released by 2mm).
  • the stopping button 14 is partially depressed by the cam lobe 27. Because the magnetic switch 13 is still powered, the electric circuit remains conductive and the motor continues to work. If power is interrupted, the electric circuit is broken.
  • the rotary knob 11 In order to restore power, the rotary knob 11 must be rotated to position b to trigger the operating button 16. This prevents misoperation and ensures operator safety. Moreover when the operating button 16 is to be released, it may be fully released ( Figure 10) or partially released ( Figure 14) without triggering the stopping button 14.
  • the configuration of the first sliding slot 49 may be changed so that the third position c may be located between the first position a and the second position b.
  • the rotary knob 11 is then released from position d and the restoring force of the first and second resilient biassing springs 34, 48 causes the trigger body 19 to rotate clockwise to release the operating button 16 and the lever button 18.
  • the rotary knob 11 driven by the trigger body 19 rotates clockwise to its first position a and the pushing rod 40 returns to the first delimiting position 64 along the second sliding slot 51 (see Figures 9 and 10).
  • the motor of the shredder is stopped. Repeated counterclockwise rotation of the rotary knob 11 to position d and release of the rotary knob 11 to position a puts the motor in reverse point-action state until the blockage is released.

Landscapes

  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Push-Button Switches (AREA)
EP20070252136 2006-06-01 2007-05-24 Schalteranordnung Not-in-force EP1863050B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200620073525 2006-06-01

Publications (2)

Publication Number Publication Date
EP1863050A1 true EP1863050A1 (de) 2007-12-05
EP1863050B1 EP1863050B1 (de) 2009-12-23

Family

ID=38353021

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20070252136 Not-in-force EP1863050B1 (de) 2006-06-01 2007-05-24 Schalteranordnung

Country Status (2)

Country Link
EP (1) EP1863050B1 (de)
DE (1) DE602007003896D1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101894699A (zh) * 2010-04-21 2010-11-24 绿友机械集团股份有限公司 双向操作远程控制四位手动操作开关
CN114695002A (zh) * 2022-04-08 2022-07-01 中国第一汽车股份有限公司 一种汽车用旋钮式开关
CN117612885A (zh) * 2023-12-25 2024-02-27 广东精美医疗科技有限公司 开关结构和医用动力手机

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1057208B (de) * 1955-09-30 1959-05-14 Elektrotechnischer Artikel & A Mehrpolige handbetaetigte Schaltvorrichtung fuer Elektromotoren
EP0820084A2 (de) * 1996-07-18 1998-01-21 Moeller GmbH Betätigungsvorrichtung für Leistungsschaltgeräte
CA2294700A1 (en) * 1999-01-15 2000-07-15 The Boeing Company Solid state flight deck modules and components thereof
GB2377899A (en) * 2001-07-24 2003-01-29 Primax Electronics Ltd Shredding apparatus having an improved automatic start mechanism
US20040182685A1 (en) * 2003-01-31 2004-09-23 Kinichi Tsunemoto Dual switch for selective removal of recording medium from compound device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1057208B (de) * 1955-09-30 1959-05-14 Elektrotechnischer Artikel & A Mehrpolige handbetaetigte Schaltvorrichtung fuer Elektromotoren
EP0820084A2 (de) * 1996-07-18 1998-01-21 Moeller GmbH Betätigungsvorrichtung für Leistungsschaltgeräte
CA2294700A1 (en) * 1999-01-15 2000-07-15 The Boeing Company Solid state flight deck modules and components thereof
GB2377899A (en) * 2001-07-24 2003-01-29 Primax Electronics Ltd Shredding apparatus having an improved automatic start mechanism
US20040182685A1 (en) * 2003-01-31 2004-09-23 Kinichi Tsunemoto Dual switch for selective removal of recording medium from compound device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101894699A (zh) * 2010-04-21 2010-11-24 绿友机械集团股份有限公司 双向操作远程控制四位手动操作开关
CN101894699B (zh) * 2010-04-21 2012-05-30 绿友机械集团股份有限公司 双向操作远程控制四位手动操作开关
CN114695002A (zh) * 2022-04-08 2022-07-01 中国第一汽车股份有限公司 一种汽车用旋钮式开关
CN114695002B (zh) * 2022-04-08 2023-10-24 中国第一汽车股份有限公司 一种汽车用旋钮式开关
CN117612885A (zh) * 2023-12-25 2024-02-27 广东精美医疗科技有限公司 开关结构和医用动力手机

Also Published As

Publication number Publication date
DE602007003896D1 (de) 2010-02-04
EP1863050B1 (de) 2009-12-23

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