CN202825770U - Power supply automatic cutting-off device of electric tool - Google Patents
Power supply automatic cutting-off device of electric tool Download PDFInfo
- Publication number
- CN202825770U CN202825770U CN 201220514218 CN201220514218U CN202825770U CN 202825770 U CN202825770 U CN 202825770U CN 201220514218 CN201220514218 CN 201220514218 CN 201220514218 U CN201220514218 U CN 201220514218U CN 202825770 U CN202825770 U CN 202825770U
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- microswitch
- electric tool
- push rod
- main handle
- press button
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Abstract
The utility model discloses a power supply automatic cutting-off device of an electric tool, and relates to a device which is applied to electric tools such as electric pruners, electric brush cutters, or grass mowers to achieve automatic cutting-off of the power supply. The power supply automatic cutting-off device of the electric tool is mainly composed of a main handle, a machine head, an auxiliary handle, a blade component, a locking button and the like. A microswitch, a push rod and a reset spring are installed on one side, near the locking button, inside the machine head. The microswitch is directly electrically connected with a working circuit of the electric tool. When a user operates the locking button to enable the main handle to rotate relative to the machine head, the locking button operated can drive the push rod to contact the microswitch to achieve interruption of the power supply, when rotating angles of the main handle and the machine head are adjusted in place, the push rod breaks away from the microswitch under pushing of the reset spring, and communication of the whole working circuit of the electric tool is re-achieved. The improved power supply automatic cutting-off device of the electric tool is simple in operation, capable of not influencing adjustment operation of the rotating angles of the main handle and the machine head, and safe and reliable in usage.
Description
Technical field
The utility model relates to a kind of automatic power cut-out device, refers to specifically a kind of automatic power cut-out device of electric tool.
Background technology
The electric tool that uses in the market is of a great variety, such as the electric trimmer in the afforestation electric tool, power-operated mower, electric shear etc., this class formation is normally by main handle, the formation such as head and blade assembly, for more convenient to operate, flexibly, the relative head of main handle often is designed to rotating structure, also need be provided with in the hinged place of main handle and head a locking press button of being made pushing tow by big spring simultaneously, realize the locking of rotational angle between the two with this, as disclosed China Patent No. be 200810023107.2 " electric trimmer " just disclosed a kind of by the operational lock button to carry out the structure of the relative head rotational angle locking of main handle.Yet, when operating above-mentioned this structure rotation, the operating circuit of whole electric tool all is in conducting state, that is to say, when the finger manipulation locking press button when regulating the relative head rotational angle of main handle, in case contact because of carelessness the gauge tap on the main handle, will start electric tool and drive blade assembly work, can there be great potential safety hazard in this undoubtedly.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the defective of prior art and a kind of simple to operate, automatic power cut-out device of using a kind of electric tool of safety is provided.
Technical problem of the present utility model is achieved through the following technical solutions:
A kind of automatic power cut-out device of electric tool, comprise main handle, head, auxiliary-handle and blade assembly, described main handle is articulated and connected on head, the hinged place of this main handle and head is provided with a locking press button of being made pushing tow by big spring, and by the angle that relatively rotates of this locking press button locking main handle and head, described locking press button one side is equipped with microswitch, and this microswitch is connected electrically on the operating circuit of electric tool; Be provided with push rod between described microswitch and the locking press button, be provided with the back-moving spring of mutual pushing tow between this push rod one end and the microswitch, the other end is designed to bulb; Described push rod moves and opens and closes microswitch as axial reciprocating; Described locking press button outer wall is provided with steps of track, and this steps of track contacts with the bulb of described push rod.
Described steps of track is the trapezoid block that is installed on the locking press button outer wall.
Described back-moving spring is installed in the set annular groove of push rod one end, and this annular groove middle part also is provided with and pushes away post, and the described axial reciprocating that pushes away the post drawn stem moves with microswitch or contact start or disengaging and closes.
Compared with prior art, the utility model mainly is that adjacent locking press button one side is provided with microswitch in head, push rod and back-moving spring, this microswitch directly is connected electrically on the operating circuit of electric tool, when the operational lock button to realize that main handle is when head rotates, the locking press button that is operated will drive push rod contact microswitch to realize down circuitry, and the rotational angle of main handle and head regulate put in place after, under the back-moving spring pushing tow, push rod will break away from and the contacting of microswitch, again realize the conducting of whole electric tool operating circuit, the structure operation after the improvement is simple, neither can affect the Adjustment operation of main handle and head rotational angle, and use safer, reliably.
Description of drawings
Fig. 1 is sectional structure schematic diagram of the present utility model (locking press button is not pressed, operating circuit conducting state).
Fig. 2 is sectional structure schematic diagram of the present utility model (pressure-locking button, operating circuit interrupt status).
Fig. 3 is the structural representation of locking press button.
Fig. 4 is the sectional structure schematic diagram of push rod.
Fig. 5 is the structural representation that push rod is equipped with back-moving spring.
The specific embodiment
The below will elaborate to the utility model embodiment by above-mentioned accompanying drawing again.
Such as Fig. 1～shown in Figure 5,1. main handle, 2. big spring, 3. head, 4. blade assembly, 5. locking press button, 51. steps of tracks, 6. back-moving spring, 7. push rod, 71. bulbs, 72. annular grooves, 73. push away post, 8. microswitch.
A kind of automatic power cut-out device of electric tool, as shown in Figure 1 and Figure 2, it relates to a kind of device to realize that power supply cuts off automatically in electric trimmer or the electric tools such as power-operated mower or electric shear that is applied to, present embodiment is described in detail as an example of electric trimmer example, its structure mainly is to be made of main handle 1, head 3, auxiliary-handle and blade assembly 4 etc., arrange on the main handle 1 on main switch, the auxiliary-handle auxiliary switch is set, press simultaneously major and minor switch and can connect the operating circuit of whole electric trimmer, thereby drive blade assembly work.
Described main handle 1 is articulated and connected at head 3 rear portions, this hinged place is equipped with a locking press button 5 of being made pushing tow by big spring 2, the structural similarity that uses on this project organization and the present electric trimmer of commonly using, reset response when wherein big spring 2 mainly plays locking press button 5 and presses, and be designed with the external toothing structure on the locking press button, it with main handle 1, head 3 on set ring gear be meshed to realize angle locking.
Move inward to promote locking press button when pressure-locking the elastic force that button 5 overcomes big spring 2, the external toothing on this locking press button 5 will break away from the ring gear on main handle 1, the head 3, and this moment, main handle and head can be regulated rotational angle; After angular adjustment puts in place, unclamp the pressing force on the locking press button 5, it is outwards mobile to promote locking press button 5 under the elastic force effect of big spring 2, and the external toothing on this locking press button will be meshed with the ring gear on main handle 1, the head 3, thereby realizes locking.
Described head 3 interior adjacent locking press buttons 5 are provided with microswitch 8 and push rod 7, and described microswitch 8 is connected electrically on the operating circuit of electric trimmer; Described push rod 7 is arranged between microswitch 8 and the locking press button 5, this push rod right-hand member is designed with such as Fig. 4, annular groove 72 structures shown in Figure 5, in the middle part of annular groove, be formed with and push away post 73, back-moving spring 6 is installed in this annular groove, and the back-moving spring while, pushing tow was on microswitch 8, these push rod 7 left ends are designed to smooth bulb 71, correspondingly are provided with the steps of track 51 that is as shown in Figure 3 trapezoidal bulk at locking press button 5 outer walls, and this steps of track contacts with described bulb 71; When locking press button 5 moves in or out, will so that bulb in the bottom surface of steps of track 51, inclined-plane and end face be mobile, can realize that the axial reciprocating of push rod 7 moves.
Working method of the present utility model is as follows: when inwardly pressure-locking button 5, can realize the adjusting of main handle 1 and head 3 rotational angles, meanwhile, the locking press button 5 that moves inward also can pass through gradually pushing tow bulb 71 of steps of track 51, and when bulb moves to the end face of steps of track from the bottom surface of steps of track 51 gradually along the inclined-plane, the elastic force that push rod 7 will overcome back-moving spring 6 axially moves right, until till the contact microswitch 8, therefore, the process of in relative rotation namely electric trimmer operating circuit interruption of process of main handle 1 and head 3, operation can be safer; When the pressing force that unclamps locking press button 5, big spring 2 pushing tow locking press buttons 5 are mobile resetting outwards, main handle 1 is namely locked with the adjusting of head 3 rotational angles, meanwhile, outwards mobile locking press button 5 also can be so that bulb 71 comes back to the bottom surface of steps of track along the inclined-plane from the end face of steps of track 51, and pushing tow push rod 7 axially is moved to the left under the elastic force effect of back-moving spring 6, and the contacting of disengaging and microswitch 8, then the operating circuit conducting of electric trimmer is in the work holding state.
Claims (3)
1. the automatic power cut-out device of an electric tool, comprise main handle (1), head (3), auxiliary-handle and blade assembly (4), described main handle (1) is articulated and connected on head (3), the hinged place of this main handle and head is provided with a locking press button (5) of being made pushing tow by big spring (2), and by the relatively rotate angle of this locking press button locking main handle (1) with head (3), it is characterized in that described locking press button (5) one sides are equipped with microswitch (8), this microswitch is connected electrically on the operating circuit of electric tool; Be provided with push rod (7) between described microswitch (8) and the locking press button (5), be provided with the back-moving spring (6) of mutual pushing tow between this push rod one end and the microswitch, the other end is designed to bulb (71); Described push rod (7) moves and opens and closes microswitch (8) as axial reciprocating; Described locking press button (5) outer wall is provided with steps of track (51), and this steps of track contacts with the bulb (71) of described push rod (7).
2. the automatic power cut-out device of a kind of electric tool according to claim 1 is characterized in that described steps of track (51) is for being installed in the trapezoid block on locking press button (5) outer wall.
3. the automatic power cut-out device of a kind of electric tool according to claim 1 and 2, it is characterized in that described back-moving spring (6) is installed in the set annular groove (72) of push rod (7) one ends, this annular groove middle part also is provided with and pushes away post (73), and the described axial reciprocating that pushes away post drawn stem (7) moves with microswitch (8) or contact start or disengaging and closes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220514218 CN202825770U (en) | 2012-10-09 | 2012-10-09 | Power supply automatic cutting-off device of electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220514218 CN202825770U (en) | 2012-10-09 | 2012-10-09 | Power supply automatic cutting-off device of electric tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202825770U true CN202825770U (en) | 2013-03-27 |
Family
ID=47937562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220514218 Expired - Fee Related CN202825770U (en) | 2012-10-09 | 2012-10-09 | Power supply automatic cutting-off device of electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202825770U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105690330A (en) * | 2014-11-26 | 2016-06-22 | 苏州宝时得电动工具有限公司 | Swinging power tool |
-
2012
- 2012-10-09 CN CN 201220514218 patent/CN202825770U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105690330A (en) * | 2014-11-26 | 2016-06-22 | 苏州宝时得电动工具有限公司 | Swinging power tool |
| CN105690330B (en) * | 2014-11-26 | 2021-09-07 | 苏州宝时得电动工具有限公司 | Swing power tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 315171, Ningbo, Zhejiang Province, Yinzhou District Town, Ji Wang Industrial Park, No. 307 East Road, cloth Patentee after: Ningbo yisida environmental protection machinery Limited by Share Ltd Address before: 315176 Zhejiang province Ningbo city Yinzhou District town water village turnip Patentee before: Ningbo East Tool Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20181009 |