CN203542560U - Electric chain saw - Google Patents
Electric chain saw Download PDFInfo
- Publication number
- CN203542560U CN203542560U CN201320627318.3U CN201320627318U CN203542560U CN 203542560 U CN203542560 U CN 203542560U CN 201320627318 U CN201320627318 U CN 201320627318U CN 203542560 U CN203542560 U CN 203542560U
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- motor
- emc
- plate
- spring
- chain saw
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Abstract
The utility model provides an electric chain saw, which is provided with a motor, a shell, a transmission system, a saw chain and a chain guide plate, wherein the motor is provided with an EMC (Electro Magnetic Compatibility) suppression plate; the grounding electrode of the EMC suppression plate is connected with the motor. The electric chain saw is characterized in that the EMC suppression plate is connected with the motor through an elastic conductor piece; a spring is taken as a connecting piece between the grounding electrode of the EMC suppression plate and the motor. Failure of the EMC suppression plate caused by severe vibration produced by the working motor under the action of elasticity is avoided, and the problem of fall of a welding point in the conventional grounding way is solved, so that the application safety of the saw chain is ensured. Meanwhile, a welding process is eliminated in the assembling process of the motor, so that the production flow can be simplified, and the production efficiency is increased.
Description
Technical field
The utility model relates to a kind of electric chain saw, particularly has the electric chain saw of motor EMC suppressing plate.
Background technology
The Electro Magnetic Compatibility EMC (Electro Magnetic Compatibility) of electric tool refers to that the electric tool operation that meets the requirements in its electromagnetic environment does not produce the ability of intolerable electromagnetic interference to any equipment in environment.Therefore electric tool EMC refers to that the electromagnetic interference that electric tool produces environment in normal course of operation can not exceed certain limit value on the one hand; That the electromagnetic interference that electric tool itself exists the environment at place has certain immunity to interference, i.e. electromagnetic susceptibility on the other hand.
In for example, motor operation course in electric tool (pruner, electric chain saw), the electromagnetic interference of disturbing other device runnings can be produced, if this interference is not suppressed, the service life of electric tool may be reduced.Therefore conventionally motor all can arrange EMC suppressing plate and reduces the EMC that motor produces and disturb, conventionally in EMC suppressing plate, earthing pole can be set, the mode of traditional employing welding is welded on one end of earth lead on the earthing pole of EMC plate, the other end be relatively connected, conventionally adopt casing that motor itself has electric conductivity as relatively welding with conductor wire.In use electric tool and motor can produce larger vibrations, weld between wire and motor is easily because vibrations produce the phenomenon coming off, thereby EMC plate can not affect EMC inhibition by earth-continuity like this, when motor assembles, need to weld, reduced actual production efficiency simultaneously.Therefore need to propose a kind of new solution and can either simplify assemble flow and enhance productivity, making again EMC plate no matter normally use can both ground connection under still more harsh test condition.
Utility model content
For address the above problem the utility model provide a kind of electric chain saw its have, motor, shell, transmission system, saw chain, guide chain plate; Motor has EMC suppressing plate, and the earthing pole of this EMC suppressing plate is connected with motor; It is characterized in that, between EMC suppressing plate and motor, by thering is flexible conductors, be connected.
Preferably, conductors is the spring that metallic conductor is made, the state in compression when spring connects EMC suppressing plate and motor.
Preferably, spring housing is located on the spring base of motor.
Preferably, motor bottom center arranges the column support of bearing, the spring base that this column support of bearing is also.
Preferably, EMC plate also has circular open, and the column support of bearing is inserted in circular open.
Preferably, circular open periphery arranges the earthing pole of EMC suppressing plate.
Preferably, earthing pole is arranged on the one side of the close motor of EMC plate, conflicts in one end of earthing pole and spring.
Between EMC suppressing plate earthing pole and motor, adopt spring as connector, elastic reaction makes motor produce at work violent vibrations can not cause EMC suppressing plate earthing failure yet, solve the problem that traditional earthing mode solder joint comes off, thereby guaranteed the use safety of chain saw.In motor assembling process, saved the process of welding, therefore can simplify production procedure and enhance productivity simultaneously.
Accompanying drawing explanation
Fig. 1 is electric chain saw complete machine schematic diagram.
The motor, EMC plate and the support decomposing schematic representation that in Fig. 2 electric tool, use.
Fig. 3 is motor and EMC plate and support generalized section.
Fig. 4 is that EMC suppresses circuit theory schematic diagram.
The specific embodiment
Below in conjunction with the specific embodiment, the utility model is described further.
With reference to the electric chain saw shown in Fig. 1, it comprises main body 1, back handle 11, front hand grip 15, guide chain plate 12 and saw chain 10.Trigger 17 is equipped with in the inner side of described back handle, close on the safety switch 18 of trigger setting and trigger interlocking, one side of main body arranges battery pack 16 and motor 14, battery pack 16 is connected in series with motor 14 and trigger 17, the operation of trigger control motor and stopping, motor slides on guide plate by transmission system (not shown) chain drive-belt.Described front hand grip 15 is arranged on the peripheral of motor 14 and is connected with main body, and described guide chain plate 12 is arranged on the front portion of main body 1, and saw chain 10 is arranged on guide chain plate 12.Conventionally electric chain saw also arranges a baffle plate 13, and the chip producing when preventing its work splashes and causes potential safety hazard.
With reference to Fig. 1,2 and Fig. 3, motor 2 is arranged on support 21, and described motor is cylindric, support is arranged on the inside of main body 1, support is formed by two parts clamping, and support 21 is by the wall 22 of both sides and by motor clamping, and the sidewall 22 of support has elasticity installation after-poppet can be blocked motor.
The bottom centre of motor is provided with the support of bearing 23, the end of motor shaft 26 inserts in the described support of bearing, and correspondingly, the other end of motor shaft arranges the identical support of bearing, the support of bearing 23 is cylindrical and as spring base, use simultaneously, and motor is installed rear spring and is set on motor bearings support.The utility model preferably by the support of bearing as spring base, as a kind of shift means of routine, independent spring base fixing spring when installing also can be set, spring base can be used other can receive the column profile of spring.In EMC suppressing plate 20, have than the circular open of support of bearing slightly larger in diameter 24, EMC suppressing plate is arranged on the upper of support 21, on support 21, have the fixture 27 for fixing EMC suppressing plate, motor is installed rear fixture and is connected in a conventional manner in EMC suppressing plate.Between motor 2 and EMC suppressing plate, be provided with spring 25, the earthing pole of EMC suppressing plate and spring are conflicted, EMC suppressing plate Compress Spring, at motor, assembled rear spring all the time in compressive state, this spring 25 is to be processed to form by the metal with satisfactory electrical conductivity, one end of spring is set on the support of bearing 23 of motor shaft end, and in the other end of spring 25 and EMC suppressing plate, the earthing pole of circular open 24 peripheries conflicts 28.Earthing pole is arranged on the lower surface 29 of EMC suppressing plate, and lower surface 29 closes on motor 2, and earthing pole is continuous annular, and the diameter of annulus and the diameter of spring are roughly equal, and its width is greater than the cross-sectional width of spring; Earthing pole can also be to be distributed in circular open 24 contact around, and contact can arrange and multiplely also can arrange one; By earthing pole and spring EMC plate and motor conducting smoothly.During installation, the upper end of spring props up the earthing pole 28 of circular open 24 peripheries, and the lower end of spring is set in motor bearings support outside, and circular open 24 inside are inserted in motor bearings support upper end, and EMC plate blocks by the fixture 27 on support simultaneously.Between EMC suppressing plate earthing pole and motor 2, adopt the mode of spring as connection, elastic reaction makes motor produce at work violent vibrations can not cause EMC suppressing plate earthing failure yet, earthing pole, spring and motor can remain the state of connection, solved the problem that traditional earthing mode solder joint comes off, thereby guarantee the use safety of chain saw, the work of welding EMC suppressing plate earthing pole and motor housing in assembling process has been saved in spring connection, and EMC suppressing plate can directly be pressed on spring and then by fixture 27, block.
With reference to Fig. 4 the utility model EMC, suppress circuit and have the inductance L 1, the L2 that are connected on motor two ends, also have filter capacitor C1, C2, filter capacitor C1, C2 adopt common mode to be connected in parallel on the two ends of inductance L 1, L2, and capacitor C 1, C2 are connected with G relatively.Described is relatively to adopt motor 24 as relatively, even connect as conductors with above-mentioned spring between motor and electric capacity.
The utility model is used spring to be connected with motor 2 as EMC earthing pole in a word, because elastic reaction makes motor produce at work violent vibrations, also can make the EMC plate earthing utmost point keep and stable connection relatively, when assembling motor, also saved process simplification that earthing pole and motor weld simultaneously production procedure improved production efficiency.
The utility model also can have multiple conversion and improvement, as the size shape of spring converted, and for example between motor and EMC suppressing plate, more spring and spring base is set.Center the utility model is not limited to the concrete structure of above-mentioned embodiment, and therefore the utility model protection domain should comprise the apparent change of those skilled in the art and replacement.
Claims (7)
1. an electric chain saw, it has motor, shell, transmission system, saw chain, guide chain plate; Described motor has EMC suppressing plate, and the earthing pole of this EMC suppressing plate is connected with described motor; It is characterized in that, between described EMC suppressing plate and motor, by thering is flexible conductors, be connected.
2. a kind of electric chain saw as claimed in claim 1, is characterized in that, described conductors is the spring that metallic conductor is made, the state in compression when spring connects EMC suppressing plate and motor.
3. a kind of electric chain saw as claimed in claim 2, is characterized in that, described spring housing is located on the spring base of motor.
4. a kind of electric chain saw as claimed in claim 3, is characterized in that, described motor bottom center arranges the column support of bearing, and this column support of bearing is also described spring base.
5. a kind of electric chain saw as claimed in claim 3, is characterized in that, described EMC plate also has circular open, and the described column support of bearing is inserted in circular open.
6. a kind of electric chain saw as claimed in claim 5, is characterized in that, described circular open periphery arranges the earthing pole of EMC suppressing plate.
7. a kind of electric chain saw as claimed in claim 6, is characterized in that, described earthing pole is arranged on the one side of the close motor of EMC plate, conflicts in one end of earthing pole and spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320627318.3U CN203542560U (en) | 2013-10-11 | 2013-10-11 | Electric chain saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320627318.3U CN203542560U (en) | 2013-10-11 | 2013-10-11 | Electric chain saw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203542560U true CN203542560U (en) | 2014-04-16 |
Family
ID=50460727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320627318.3U Expired - Fee Related CN203542560U (en) | 2013-10-11 | 2013-10-11 | Electric chain saw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203542560U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111745748A (en) * | 2019-03-26 | 2020-10-09 | 株式会社山彦 | Electric working machine |
-
2013
- 2013-10-11 CN CN201320627318.3U patent/CN203542560U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111745748A (en) * | 2019-03-26 | 2020-10-09 | 株式会社山彦 | Electric working machine |
| CN111745748B (en) * | 2019-03-26 | 2023-02-17 | 株式会社山彦 | Electric working machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20140416 Termination date: 20181011 |