EP2837278B1 - Mécanisme de commutation de sécurité pour outil de jardinage - Google Patents
Mécanisme de commutation de sécurité pour outil de jardinage Download PDFInfo
- Publication number
- EP2837278B1 EP2837278B1 EP14180262.9A EP14180262A EP2837278B1 EP 2837278 B1 EP2837278 B1 EP 2837278B1 EP 14180262 A EP14180262 A EP 14180262A EP 2837278 B1 EP2837278 B1 EP 2837278B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- safety switch
- switch mechanism
- crank
- pin
- gardening tool
- 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.)
- Active
Links
- 230000007246 mechanism Effects 0.000 title claims description 38
- 238000010413 gardening Methods 0.000 title claims description 31
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
Classifications
-
- 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
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/08—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within vertical containers
- B02C18/10—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within vertical containers with drive arranged above container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/04—Safety devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C2201/00—Codes relating to disintegrating devices adapted for specific materials
- B02C2201/06—Codes relating to disintegrating devices adapted for specific materials for garbage, waste or sewage
- B02C2201/066—Codes relating to disintegrating devices adapted for specific materials for garbage, waste or sewage for garden waste
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
- H01H3/16—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. for a door switch, a limit switch, a floor-levelling switch of a lift
- H01H3/166—Self-adjusting mountings, transmissions and the like
Definitions
- the present invention relates to a safety switch mechanism for a gardening tool.
- the safety switch mechanism of the shredder always adopts a slider button and is generally mounted between the main body and the cut-off material collecting box; that is, providing a slider button and a pin member on the cut-off material collecting box and mounting a pin lock on the main body. Pushing the slider button upwards drives the pin member to move upwards accordingly to be cooperated and connected with the pin lock; as a result, the safety switch is triggered.
- a column and a plane inside of the slider button generate interference fit with a lug boss on the cut-off material collecting box, so as to press the slider button and stop the pin member from falling down after switching on the gardening tool; however, the lug boss will be worn continuously in use, and the magnitude of interference will become less and less gradually, while the pressure to the slider button becomes smaller and smaller.
- the gardening tool is running, if it vibrates greatly, the slider button may probably fall off back to the shutdown position, and the gardening tool will stop running accidentally. Therefore, it shows that this kind of safety switch mechanisms is poor in durability and stability.
- EP 207 1936 discloses an example interlock device for vegetation shredder comprising a housing receiving a pivotable actuating element including two can surfaces to cooperate with respective ends of a rocker switch, wherein a spring biases the pivotable actuating element into open position.
- the present invention aims at providing an improved safety switch mechanism for a gardening tool with enhanced durability and stability, so as to overcome the above disadvantages in the prior art.
- a safety switch mechanism for a gardening tool comprising a cover plate, a pin lock, and a pin component which is cooperated and connected with the pin lock
- the safety switch mechanism also comprises a crank which is rotatably mounted in the cover plate, a first elastic element which is connected between the crank and the cover plate, a connecting rod which connects the crank and the pin component, and a second elastic element which is cooperated and connected with the pin component.
- the pin component includes a vertical axis, when the gardening tool is shut down, the knob is rotated anticlockwise to drive the connecting rod to turn around the vertical axis, then under the elastic restoring force of the first and second electric elements, the crank automatically resets and the connecting rod drives the pin component to completely separate from the pin lock.
- the safety switch mechanism further comprises a crank cover that is sleeved on the crank and mounted to the cover plate.
- the first elastic element is a torsional spring, one end of the torsional spring is cooperated and connected with the cover plate, and the other end is cooperated and connected with the crank.
- the crank is provided with a pair of positioning slots
- the cover plate is provided with a positioning column that can be selectively cooperated and connected with the positioning slots.
- the crank is provided with an elastic sheet
- the cover plate is provided with a cover plate slot that can be cooperated and connected with the elastic sheet.
- the pin component comprises a pin member and a pin sleeve, the pin member is slidably mounted in the pin sleeve that is cooperated and connected with the cover plate.
- the second electric element is a compressed spring, which is mounted between the pin member and the pin sleeve.
- the gardening tool is a shredder that comprises a main body and a cut-off material collecting box under the main body, and the safety switch mechanism is provided between the cut-off material collecting box and the main body.
- the present invention has the following advantages: by adopting the crank which is rotatably mounted in the cover plate, the first elastic element which is connected between the crank and the cover plate, the connecting rod which connects the crank and the pin component, and the second elastic element which is cooperated and connected with the pin component, the safety switch mechanism of the present invention makes full use of the elastic element force and the swing angle of the connecting rod, so that the pin member is great in stability in positioning and can automatically reset; and because the safety switch mechanism for the gardening tool does not have the parts in relative abrasion, the good durability is realized.
- the gardening tool corresponding to the preferred embodiment is a shredder, which is generally comprised of a main body 101, a cut-off material collecting box 102 under the main body 101 and a safety switch mechanism between the main body 101 and the cut-off material collecting box 102.
- the safety switch mechanism comprises a pin lock 3, a cover plate 33 mounted on the cut-off material collecting box 102, and a pin component 5 that can be cooperated and connected with the pin lock 3 and is mounted inside of the cover plate 33.
- the pin component 5 comprises a pin sleeve 4 and a pin member 41.
- the pin member 41 is slidably mounted inside of the pin member sleeve 4, wherein a pair of pins is arranged on top of the pin member 41, with a pair of clamp plates 42 arranged at the bottom; besides, a pair of second connection holes 47 and a pair of lug bosses 43 are arranged on the clamp plates 42.
- a pair of pin holes 2 is arranged on top of the pin sleeve 4, and a pair of sliding chutes 8 is arranged at two sides of the bottom of the pin sleeve 4.
- the lug bosses 43 and the sliding chutes 8 are in sliding connection; and the pins 48 can pass through the pin holes 2 to be cooperated and connected with the pin lock 3.
- the safety switch mechanism further comprises a knob 50, a crank 17 that is rotatably mounted in the cover plate 33, a first elastic element 27 which is connected between the crank 17 and the cover plate 33, a connecting rod 13 which connects the crank 17 and the pin component 5, and a second elastic element 11 which is cooperated and connected with the pin component 5, wherein the first elastic element 27 is a torsional spring 27, and the second elastic element 11 is a compressed spring 11.
- the knob 50 and the crank 17 are fixedly connected with each other, and the pin member 41 is connected with the crank 17 through the connecting rod 13.
- one end of the connecting rod 13 is provided with a first connecting column 15, and the other end is provided with a pair of second connecting columns 14.
- the crank 17 is provided with a connection portion 16, on which a first connection hole 18 is provided.
- the connecting rod 13 is inserted into the gap between the two pieces of clamp plates 42 of the pin member 41; at the same time, the second connecting columns 14 and the second connection holes 47 are connected together, while the first connecting column 15 is connected together with the first connection hole 18.
- the connecting rod 13 can rotate about the first connecting column 15 and the second connecting column 14.
- the crank 17 is also provided with a plurality of connecting columns 19, screw holes 20, elastic sheets 21 and a pair of positioning slots 23.
- Optimal number of the connecting columns 19 is 4, and the connecting columns 19 and the screw holes 20 are cooperated and connected with the knob 50, while the optimal connection way of the crank 17 and the knob 50 is screw connection.
- the cover plate 33 is provided with a baffle 36, a cover plate column 29, a cover plate slot 24 and a positioning column 31.
- the first elastic element, torsional spring 27, is sleeved on the cover plate column 29, with one end connected with the baffle 36, and the other end connected with crank 17. When the crank 17 rotates, two ends thereof abut against the baffle 36 and the crank 17 separately; and always provide a resetting force for the crank 17.
- the crank sleeve 10 is provided with a through hole 9, and the crank 17 is cooperated and connected with the through hole 9, and the crank 17 can rotate inside of the through hole 9.
- the second elastic element, compressed spring 11, is mounted between the pin sleeve 4 and the pin member 41, with two ends thereof abutting against the top inner wall of the pin sleeve 4 and the top of the pin member 41.
- the center of rotation of the crank 17 and the knob 50 is numbered as 71
- rotating trace of the fist connection hole 18 on the crank 17 is a segment of circular arc 70 around the center of rotation 71
- the segment of circular arc has two ends E and F, when the fist connection hole 18 is on the F end of the circular arc, the safety switch mechanism of the present invention is powered off; and when the fist connection hole 18 is on the E end of the circular arc, the safety switch mechanism of the present invention is powered on.
- an angle B between the segment of circular arc 70 and the center of rotation 71 is 130°.
- the pin component 5 includes a vertical axis 1 that passes through the center of rotation 71.
- the knob 50 When it is necessary to power on the gardening tool, the knob 50 is rotated clockwise to drive the crank 17 to rotate, as a result, the connecting rod 13 gradually overlaps with the vertical axis a and pushes the pin member 41 upwards; when the connecting rod 13 rotates and passes through the vertical axis a, and forms an optimal angle A with the vertical axis a, the optimal angle A in the preferred embodiment being 8° ( Fig.6 ), namely the fist connection hole 18 of the crank 17 rotates to the E end of the circular arc 70.
- one positioning slot 23 of the crank 17 abuts against the positioning column 31 of the cover plate 33, such that the knob 50 stops rotating and the clamping portion 34 on the elastic sheet 21 is clamped and connected with the cover plate slot 24, at the same time, rise of the connecting rod 13 pushes the pin member 41; specifically, the lug boss 43 on the pin member 41 slides in the sliding slot 8 on the pin sleeve 4; when the lug boss 43 slides to the top of the sliding slot 8, it abuts against the sliding slot 8 and drives the pin sleeve 4 to move upwards.
- the safety switch mechanism of the present invention can stably maintain the optimal angle A of the connecting rod 13; even if the gardening tool vibrates greatly in use, it will not stop working because of the pin member 41 separating from the pin lock 3.
- the safety switch mechanism for a gardening tool of the present invention is good in durability and stability.
- the knob 50 when it is necessary to shut down the safety switch mechanism, the knob 50 is rotated anticlockwise to drive the crank 17 to rotate anticlockwise, as a result, the connecting rod 13, the pin member 41 and the pin sleeve 4 move downwards; when the connecting rod 13 passes through the vertical axis a, even if the user lets the knob 50 go, because of the elastic restoring force of the compressed spring 11 and the torsional spring 27, the crank 17, the knob 50 and the connecting rod 13 will not stop, but automatically and continuously move till the pins 48 completely separate from the pin lock 3; therefore, it can prevent the pins 48 from being broken when the user pulls the cut-off material collecting box 102 out while the pins 48 are not completely separated from the pin lock.
- the main body 101 of the gardening tool has a surface portion 111 with a discharge opening 113 for cut-off material (e.g. mown grass) or shreddered pieces.
- a dangerous devices 115 may operate, such as a rotating knife or blade, a shredder or the like, driven by an electric or combustion motor 116.
- the pin lock 3 may be arranged accessible from outside of the main body.
- the cut-off material collecting box 102 has a surface portion 112 that is designed matching to the mentioned main body surface portion 111. It has a matching material receiving opening 114 and has the cover plate 33 and the devices 4 and 5 seqq at a location matching that of the pin lock 3.
- the safety switch mechanism deenergizes the main body in that the electric supply to a driving motor 116 is interrupted by the pin lock 3 so that the dangerous device is forcedly in-operative.
- the opening 113 of the body is closed.
- the pin lock 3 is engaged by the pins 48 of the pin member 41 and removes thereby the interruption of the electrical path. Accordingly, the driving motor is no longer forcedly in-operative, but can be operated by other and usual devices such as an electric switch (not shown).
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Harvester Elements (AREA)
- Crushing And Pulverization Processes (AREA)
- Mechanisms For Operating Contacts (AREA)
Claims (10)
- Mécanisme de commutateur de sécurité pour un outil de jardinage, comprenant une plaque de recouvrement (33), un verrouillage (3) à broche et un composant (5) de broche qui coopère et est connecté avec le verrouillage (3) à broche, dans lequel le mécanisme de commutateur de sécurité comprend également une bielle (17) qui est montée rotative dans la plaque de recouvrement (33), un premier élément élastique (27) qui est connecté entre la bielle et la plaque de recouvrement, une tige de connexion (18) qui connecte la bielle (17) et le composant (5) de broche et un deuxième élément élastique (11) qui coopère et est connecté avec le composant (5) de broche.
- Mécanisme de commutateur de sécurité pour un outil de jardinage selon la revendication 1, dans lequel le mécanisme de commutateur de sécurité comprend en outre un bouton rotatif qui est connecté fixe avec la bielle.
- Mécanisme de commutateur de sécurité pour un outil de jardinage selon la revendication 1, dans lequel le composant de broche inclut un axe vertical, lorsque l'outil de jardinage est à l'arrêt, le bouton rotatif est tourné dans le sens antihoraire pour entraîner la tige de connexion à tourner autour de l'axe vertical, ensuite sous la force de restauration élastique des premier et deuxième éléments électriques, la bielle se réinitialise automatiquement et la tige de connexion entraîne le composant de broche pour se séparer complètement du verrouillage à broche.
- Mécanisme de commutateur de sécurité pour un outil de jardinage selon la revendication 1, dans lequel le mécanisme de commutateur de sécurité comprend en outre un couvre-bielle qui est gainé sur la bielle et monté sur la plaque de recouvrement.
- Mécanisme de commutateur de sécurité pour un outil de jardinage selon la revendication 1, dans lequel le premier élément élastique est un ressort de torsion, une extrémité du ressort de torsion coopère et est connectée avec la plaque de recouvrement, et l'autre extrémité coopère et est connectée avec la bielle.
- Mécanisme de commutateur de sécurité pour un outil de jardinage selon la revendication 1, dans lequel la bielle est prévue avec une paire de fentes de positionnement, et la plaque de recouvrement est prévue avec une colonne de positionnement qui peut sélectivement coopérer et être connectée avec les fentes de positionnement.
- Mécanisme de commutateur de sécurité pour un outil de jardinage selon la revendication 1, dans lequel la bielle est prévue avec une feuille élastique, et la plaque de recouvrement est prévue avec une fente de plaque de recouvrement qui peut coopérer et être connectée avec la feuille élastique.
- Mécanisme de commutateur de sécurité pour un outil de jardinage selon la revendication 1, dans lequel le composant de broche comprend un élément de broche et une gaine de broche, l'élément de broche est monté coulissant dans la gaine de broche qui coopère et est connectée avec la plaque de recouvrement.
- Mécanisme de commutateur de sécurité pour un outil de jardinage selon la revendication 8, dans lequel le deuxième élément électrique est un ressort compressé, qui est monté entre l'élément de broche et la gaine de broche.
- Mécanisme de commutateur de sécurité pour un outil de jardinage selon l'une quelconque des revendications 1 à 9, dans lequel l'outil de jardinage est un broyeur qui comprend un corps principal et un bac de recueil de matières coupées sous le corps principal, et le mécanisme de commutateur de sécurité est prévu entre le bac de recueil de matières coupées et le corps principal.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201310342149.3A CN103474266B (zh) | 2013-08-07 | 2013-08-07 | 园艺工具的安全开关机构 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2837278A2 EP2837278A2 (fr) | 2015-02-18 |
EP2837278A3 EP2837278A3 (fr) | 2015-03-04 |
EP2837278B1 true EP2837278B1 (fr) | 2016-06-08 |
Family
ID=49799071
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14180262.9A Active EP2837278B1 (fr) | 2013-08-07 | 2014-08-07 | Mécanisme de commutation de sécurité pour outil de jardinage |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2837278B1 (fr) |
CN (1) | CN103474266B (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107004525B (zh) * | 2017-02-28 | 2019-07-05 | 深圳市锐明技术股份有限公司 | 车载电子设备的触碰开关机构及车载电子设备 |
WO2021088602A1 (fr) * | 2019-11-07 | 2021-05-14 | 苏州宝时得电动工具有限公司 | Tondeuse à gazon |
CN112652498A (zh) * | 2020-09-29 | 2021-04-13 | 保定和易法电气科技有限公司 | 一种作用于高压开关柜状态转换开关的装置 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4632319A (en) * | 1985-08-12 | 1986-12-30 | Black & Decker Inc. | Cable connector interlock arrangement for electric shredders |
SI9200354A (en) * | 1991-12-13 | 1993-06-30 | Michael Lopic | Portable cutting apparatus |
US7667154B2 (en) * | 2007-04-09 | 2010-02-23 | ASCO Power Tehnologies, L.P. | Three-position apparatus capable of positioning an electrical transfer switch |
EP2071936A1 (fr) * | 2007-12-21 | 2009-06-24 | Robert Bosch Gmbh | Dispositifs d'interblocage |
CN201399370Y (zh) * | 2009-03-03 | 2010-02-10 | 天佑电器(苏州)有限公司 | 一种用于碎枝机的安全机构 |
CN101719430B (zh) * | 2009-12-28 | 2013-04-03 | 天佑电器(苏州)有限公司 | 碎枝机的开关机构 |
CN201820712U (zh) * | 2010-10-29 | 2011-05-04 | 刘振祥 | 一种立式交流接触器 |
CN203397949U (zh) * | 2013-08-07 | 2014-01-15 | 天佑电器(苏州)有限公司 | 园艺工具的安全开关机构 |
-
2013
- 2013-08-07 CN CN201310342149.3A patent/CN103474266B/zh active Active
-
2014
- 2014-08-07 EP EP14180262.9A patent/EP2837278B1/fr active Active
Also Published As
Publication number | Publication date |
---|---|
CN103474266B (zh) | 2015-10-28 |
CN103474266A (zh) | 2013-12-25 |
EP2837278A3 (fr) | 2015-03-04 |
EP2837278A2 (fr) | 2015-02-18 |
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