CN209526143U - A kind of electric tool - Google Patents
A kind of electric tool Download PDFInfo
- Publication number
- CN209526143U CN209526143U CN201920321559.2U CN201920321559U CN209526143U CN 209526143 U CN209526143 U CN 209526143U CN 201920321559 U CN201920321559 U CN 201920321559U CN 209526143 U CN209526143 U CN 209526143U
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- Prior art keywords
- tool
- casing
- battery pack
- terminal
- protector
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model provides a kind of electric tool, the electric tool is powered using battery pack, the electric tool includes casing and protector, tool terminal is provided on casing, battery pack is detachably mounted on casing to be electrically connected with tool terminal, protector is movably set on casing, and protector is configured as being provide with tool terminal when battery pack and casing are in discrete state.Electric tool provided by the utility model is provide with tool terminal by protector after battery pack extraction, can accidentally touch tool terminal to avoid operator and get an electric shock, safety is more preferable.
Description
Technical field
The utility model relates to a kind of electric tools.
Background technique
Electric tool, such as screwdriver, electric drill, spanner, angle mill, sander, reciprocating saw, annular saw, sweep-saw, electric hammer, cut
It is usually all big comprising one in the electric machine control system of the direct current electric power tools such as careless machine, snowplough, pruner, chain saw, blender
The capacitor of capacity.
But existing electric tool has the following deficiencies: electric tool in use, battery pack can carry out capacitor
Charging.After extracting battery pack, if circuit does not disconnect, capacitor can discharge to make electric tool socket two pole pieces it
Between charge, operator has electric shock risk, and safety is poor.
Utility model content
The purpose of this utility model is that proposing a kind of electric tool that safety is good.
For this purpose, the utility model uses following technical scheme:
A kind of electric tool, is powered using battery pack, and the electric tool includes:
Casing, is provided with tool terminal, the battery pack be detachably mounted on the casing with the work
Has terminal electrical connection；And
Protector is movably set on the casing, and the protector is configured as in the battery pack and the machine
Shell is provide with the tool terminal when being in discrete state.
In one embodiment, the protector is slideably positioned on the casing and is provided on the protector for institute
The escape port that the tool terminal of stating passes through；The protector is configured as the quilt during battery pack is bound to the casing
The battery pack pushes sliding to be electrically connected to expose the tool terminal with the battery pack.
In one embodiment, elastic component is provided between the protector and the casing, the elastic component is configured
To provide to the protector to the elastic force for being provide with tool terminal direction and moving.
In one embodiment, the tool ends end attached bag includes the first tool terminal and the second tool terminal, in the casing
It is provided with tool circuit, the both ends of the tool circuit are electrically connected with the first tool terminal and the second tool terminal respectively
It connects；
It is provided with first resistor on the protector, is configured as being in separation when the battery pack and the casing
It is connect when state with the both ends of the tool circuit, it is disconnected with institute's tool circuit when the battery pack is installed on the casing
It opens.
In one embodiment, when the battery pack and the casing are in discrete state, the two of the first resistor
End is connected with the first tool terminal and the second tool terminal respectively.
In one embodiment, the both ends of the first resistor pass through conductive sheet and the first tool terminal and described
Second tool terminal connects, and the conductive sheet part is embedded on the protector.
In one embodiment, the tool ends end attached bag includes the first tool terminal and the second tool terminal, in the casing
It is provided with tool circuit, one end of the tool circuit is electrically connected with the first tool terminal；
It is provided on the protector
Current limiting element, can limit the electric current for flowing through its own, and the both ends of the current limiting element are respectively with described second
The electrical connection of the other end of tool terminal and the tool circuit；And
Conduct piece is connect with the other end of the tool circuit, and the resistance of the conduct piece is less than the current limiting element
Resistance, the conduct piece be configured as during the battery pack is bound to the casing by with second tool ends end
Son is disconnected being changed into and be connected with the second tool terminal.
In one embodiment, there is the protrusion for connecting with the second tool terminal on the conduct piece.
In one embodiment, the protector includes:
Main body is slideably positioned on the casing；
Shield is set to one end of the main body and for being provide with the tool terminal；And
First locating part, is set to the other end of the main body, and first locating part is configured as in the battery
Packet and the casing abut when being in discrete state with the second locating part on the casing.
In one embodiment, it is provided with impeller on first locating part, the impeller is arranged in described second
On locating part and the impeller during battery pack is bound to the casing with the battery pack for abutting.
The beneficial effects of the utility model are as follows:
Electric tool provided by the utility model includes protector, and protector is configured as in battery pack and casing separation shape
Tool terminal is provide with when state, so that operator accidentally touches tool terminal and gets an electric shock after avoiding battery pack from extracting, safety is more preferable.
Detailed description of the invention
Fig. 1 is the battery pack that specific embodiment of the present invention provides and when the casing of electric tool is in discrete state
Structural schematic diagram；
Fig. 2 is the structural representation that the battery pack that utility model specific embodiment provides is installed on the casing of electric tool
Figure；
Fig. 3 is the decomposition texture schematic diagram of the tool terminal that utility model specific embodiment provides and protector；
Fig. 4 is the battery pack that specific embodiment of the present invention provides and when the casing of electric tool is in discrete state
One of tool terminal and the structural schematic diagram of protector；
Fig. 5 is the top view of Fig. 4；
Fig. 6 be specific embodiment of the present invention provide battery pack insertion electric tool casing when tool terminal with
One of structural schematic diagram of protector；
Fig. 7 is the top view of Fig. 6；
Fig. 8 is the battery pack that specific embodiment of the present invention provides and when the casing of electric tool is in discrete state
The part circuit structure schematic diagram of electric tool；
Electric tool when Fig. 9 is the casing for the battery pack insertion electric tool that specific embodiment of the present invention provides
One of part circuit structure schematic diagram；
Figure 10 is that the battery pack of specific embodiment of the present invention offer and the casing of electric tool are in discrete state
When tool terminal and protector second structural representation；
Figure 11 is the decomposition texture schematic diagram of Figure 10；
Figure 12 is the top view of Figure 10；
Figure 13 be along Figure 12 A-A to sectional view；
Tool terminal when Figure 14 is the casing for the battery pack insertion electric tool that specific embodiment of the present invention provides
With the second structural representation of protector；
Figure 15 is the top view of Figure 14；
Figure 16 is the sectional view of the B-B direction along Figure 15；
When Figure 17 is that the battery pack that specific embodiment of the present invention provides is not fully inserted into the casing of electric tool
The part circuit structure schematic diagram of electric tool；
Electric tool when Figure 18 is the casing for the battery pack insertion electric tool that specific embodiment of the present invention provides
Part circuit structure schematic diagram two.
Appended drawing reference:
100, electric tool；200, battery pack；
110, casing；111, tool terminal；112, terminal base；113, capacitor；114, the second locating part；1111, the first work
Has terminal；1112, the second tool terminal；
120, protector；121, main body；122, shield；123, the first locating part；124, impeller；125, the first electricity
Resistance；126, conductive sheet；127, current limiting element；128, conduct piece；1221, baffle；1222, escape port；
130, elastic component.
Specific embodiment
Further illustrate the technical solution of the utility model below with reference to the accompanying drawings and specific embodiments.
Specific embodiment of the present invention provides a kind of electric tool, the electric tool can with but be not limited to hold
Formula electric tool.The electric tool can with but be not limited to screwdriver, electric drill, spanner, angle mill etc. needs speed regulation electric tool,
Sander etc. can may be used to cut the electronic work of workpiece for the electric tool for workpiece of polishing, reciprocating saw, annular saw, sweep-saw etc.
Tool, electric hammer etc. may be used to do the electric tool that uses of impact, the garden instruments such as grass trimmer, snowplough, pruner, chain saw, only
Want these electric tools that can fall in the protection model of the utility model using the substantive content of technical solution disclosed below
In enclosing.
As depicted in figs. 1 and 2, electric tool 100 provided by the utility model is powered by battery pack 200.Electric tool
100 include casing 110, is provided with multiple tool terminals 111 on casing 110, and tool circuit, tool electricity are provided in casing 110
The both ends on road are electrically connected with two of them tool terminal 111 respectively.Battery pack 200 be detachably mounted on casing 110 with
The electrical connection of tool terminal 111 simultaneously and then is powered for tool circuit.Specifically, as shown in figure 3, tool terminal 111 includes being set to
The first tool terminal 1111 and the second tool terminal 1112 on terminal base 112, the both ends of tool circuit respectively with the first tool
Terminal 1111 and the electrical connection of the second tool terminal 1112, the first tool terminal 1111 and the second tool terminal 1112 be respectively used to
Positive terminal and negative terminal the contact electrical connection of battery pack 200 think that tool circuit is powered.First tool terminal 1111 and
Two tool terminals 1112 can with but be not limited in the form of sheets.
The effects of in order to realize filtering or adjustment voltage magnitude, tool circuit includes capacitor.After extracting battery, capacitor may
It can make to charge between the first tool terminal 1111 and the second tool terminal 1112 and cause safety problem, be asked to solve this safety
Topic, as shown in Figure 1 to Figure 3, the electric tool 100 that present embodiment provides further includes protector 120, and protector 120 is excellent
It selects but is not limited to be made of plastics or other insulating materials, protector 120 is movably set on casing 110 and protector
120 are configured as being provide with tool terminal 111 when battery pack 200 and casing 110 separate, thus operator after avoiding battery from extracting
It accidentally touches tool terminal 111 and gets an electric shock, safety is good.
Fig. 1 to Fig. 3 is please referred to, in order to easy to operate, protector 120 is slideably positioned on casing 110 and protector
The escape port 1222 passed through for tool terminal is provided on 120.Optionally, protector 120 includes main body 121 and is respectively arranged at
The shield 122 at 121 both ends of main body and the first locating part 123.Main body 121 is slideably positioned on casing 110, and main body 121 can be with
But be not limited to it is substantially plate-like, main body 121 can with but be not limited in the support plate for being slideably positioned in casing 110 or sliding rail
On.Shield 122 is for being provide with tool terminal 111.Optionally, shield 122 is sequentially connected including three pieces and is arranged in angle
Baffle 1221, angle between adjacent screen 1221 can with but be not limited to substantially 90 degree, and be wherein located at the baffle of two sides
1221 extend to the same side for being located in the middle baffle 1221.Escape port 1222 is set on shield 122, specifically, evacuation
Mouth 1222 is set on intermediate baffle 1221.First locating part 123 is configured as when battery pack 200 and casing 110 separate
It abuts with the second locating part 114 on casing 110 to limit the stroke of protector 120.
In order to simplify operation, battery pack 200 can push protector 120 sliding during battery pack 200 is inserted into casing 110
It is dynamic, so that tool terminal 111 is exposed across escape port 1222 contacts company with the positive terminal of battery pack 200 and negative terminal
It connects.Preferably, battery pack 200 is installed on casing 110 (the as electricity of the arrow instruction in Fig. 1 along first direction pluggablely
The direction of insertion of pond packet 200), protector 120 is also slideably positioned on casing 110 along first direction, i.e. the plug of battery pack 200
Direction is consistent with the glide direction of protector 120, to guarantee that movement is steady.Please refer to Fig. 1 to Fig. 3, the first locating part 123
On be provided with impeller 124, impeller 124 is arranged on the second locating part 114, and battery pack 200 is inserted into the process of casing 110
In can be abutted with impeller 124 with push protector 120 slide, in addition, impeller 124 also have for protector 120 be oriented to
Effect.Impeller 124 can with but be not limited to substantially plate-like, impeller 124 and main body 121 preferably but are not limited to substantially put down
Row.
Please continue to refer to Fig. 3, elastic component 130 is provided between protector 120 and casing 110, elastic component 130 is configured as
It provides to protector 120 to the elastic force for being provide with tool terminal direction and moving.Elastic component 130 can with but be not limited to spring.Elasticity
Part 130 can be connect at least one of protector 120 and casing 110.Elastic component 130 preferably but is not limited to be set to the
Between one locating part 123 and casing 110.Elastic component 130 both can guarantee makes shield 122 be in cover after the extraction of battery pack 200
If the state of tool terminal, moreover it is possible to pop up battery pack 200 in the withdrawal process of battery pack 200, make the removal of battery pack 200 more
It is laborsaving.
As shown in Fig. 4 to Fig. 9, in order to further increase the safety of electric tool 100, is provided on protector 120
One resistance 125, first resistor 125 are configured as two with tool circuit when battery pack 200 is in discrete state with casing 110
End connection.I.e. as shown in figure 8, when battery pack 200 leaves casing 110, first resistor 125 and the series connection of tool circuit are with by tool
The remaining capacity in capacitor 113 in circuit consumes, simultaneously because shield 122 is located at 111 outside of tool terminal, for
User's this phenomenon of getting an electric shock caused by capacitor 113 discharges forms duplicate protection.As shown in figure 9, when battery pack 200 is installed on machine
When on shell 110, first resistor 125 is slided with protector 120 and is disconnected with tool circuit, at this time battery pack 200, tool circuit string
It is unified into normal operating circuit.
For the ease of the on-off at first resistor 125 both ends and tool circuit, separated when battery pack 200 is in casing 110
When state, the both ends of first resistor 125 are connected with the first tool terminal 1111 and the second tool terminal 1112 respectively.It is preferred that
Ground, as shown in Figures 4 to 7, the both ends of first resistor 125 pass through conducting wire and are electrically connected with conductive sheet 126, first resistor 125
Both ends pass through conductive sheet 126 and the first tool terminal 1111 and the second tool terminal 1112 connects.Conductive sheet 126 is by copper
Etc. the conductive materials of good conductivities be made.The quantity of first resistor 125 can with but be not limited to one, be also possible to multiple and simultaneously
Connection.In order to be kept in contact conductive sheet 126 with tool terminal 111 after the extraction of battery pack 200, the bullet after the extraction of battery pack 200
Property part 130 be in compressive state, this just makes 126 long-time of conductive sheet be in stress, in order to avoid conductive sheet 126 takes off
It falls, 126 part of conductive sheet is embedded on protector 120.And preferably, conductive sheet 126 is embedded at by way of embedding and injection molding
On protector 120.It is locally thickeied on the position for being embedded conductive sheet 126 of protector 120 simultaneously, to further decrease conductive sheet
126 a possibility that falling off.
100 grafting battery pack 200 of electric tool in a flash, the capacitance terminal voltage of tool circuit is low, 200 meeting of battery pack
Give capacitor 113 to charge, and charging transient has a very big electric current, cause tool terminal 111 and the terminal of battery pack 200 it
Between generate electric spark, damage the terminal and tool circuit of tool terminal and battery pack 200.To solve this problem, such as Figure 10
To current limiting element 127 and conduct piece 128 shown in Figure 16, is provided on protector 120, the resistance of conduct piece 128 is less than current limliting member
The resistance of part 127.Conduct piece 128 is made of the conductive material of the good conductivities such as copper.Current limiting element 127, which can limit, flows through it certainly
The electric current of body, it is preferable that the current limiting element 127 is resistance element.1111 electricity of one end of tool circuit and the first tool terminal
Connection, one end of current limiting element 127 are electrically connected with the second tool terminal 1112, the other end and conduct piece of current limiting element 127
128 connect with the other end of tool circuit, i.e. current limiting element 127 and conduct piece 128 is connect with the same end of capacitor 113.
As shown in figure 17, when battery pack 200 is separated with casing 110, conduct piece 128 and the second tool terminal 1112 are disconnected.In battery
During packet 200 is inserted into casing 110, battery pack 200, current limiting element 127 are connected forming circuit with tool circuit, and current limliting is first
Part 127 reduces the electric current in circuit, so as to eliminate the spark phenomenon in 200 insertion process of battery pack.As shown in figure 18, when
When on installation to the casing 110 completely of battery pack 200, protector 120, which slides into, connects conduct piece 128 with the second tool terminal 1112
The position of connection is touched, at this point, current limiting element 127 is short-circuited, battery pack 200, tool circuit connect to form normal operating circuit.
Wherein, conduct piece 128 is preferred but is not limited in the form of sheets, has on conduct piece 128 for contacting with the second tool terminal 1112
The protrusion of connection.The quantity of current limiting element 127 can with but be not limited to one, be also possible to multiple and in parallel.
The application method of the electric tool 100 of present embodiment offer is provided briefly below:
During battery pack 200 is inserted into casing 110:
As shown in Fig. 1, Fig. 6, Fig. 7 and Figure 14 to Figure 16, battery pack 200 pushes protector 120 to the right by impeller 124
Slideslip, tool terminal pass through escape port 1222 and are exposed and contact company with the positive terminal of battery pack 200 and negative terminal
It connects.Battery pack 200 is inserted into the process of casing 110, before this as shown in figure 17, battery pack 200, current limiting element 127 and tool circuit
It is connected into circuit, current limiting element 127 inhibits capacitor 113 to shove, and improves the sparking problem in 200 insertion process of battery pack.To electricity
When on installation to the casing 110 completely of pond packet 200, as shown in figure 18, protector 120, which slides into, makes conduct piece 128 and the second tool
The position that terminal 1112 connects, at this point, current limiting element 127 is short-circuited, battery pack 200, tool circuit connect to be formed normally
Operating circuit.
After battery pack 200 is separated from casing 110:
As shown in Fig. 4, Fig. 5, Figure 10, Figure 12 and Figure 13, protector 120 moves downward directly under the action of elastic component 130
To the state for being provide with tool terminal is in, to prevent the electric discharge hitter of capacitor 113.Moreover, as shown in figure 8, battery pack 200 and machine
When shell 110 is in discrete state, the conductive sheet 126 at 125 both ends of first resistor and the first tool terminal 1111 and the second tool ends end
Son 1112 connects, and first resistor 125 and tool circuit are connected into circuit to fall electric quantity consumption remaining in capacitor 113,
Duplicate protection is formd for the electric discharge of capacitor 113 this phenomenon of hitter.In addition, as shown in figure 17, conduct piece 128 and the second tool
Terminal 1112 disconnects, to there is spark phenomenon when preventing installation battery pack 200 next time.
It should be noted that the mounting means of protector 120 is not limited to above situation, in other embodiments,
The modes such as the one end that can be protector 120 is rotationally connected on casing 110, and the other end is connected or is clamped by connector can
It is releasably connected on casing 110.
Technical principle of the utility model has been described above with reference to specific embodiments.These descriptions are intended merely to explain this reality
With novel principle, and it cannot be construed to the limitation to scope of protection of the utility model in any way.Based on the explanation herein,
Those skilled in the art, which does not need to pay for creative labor, can associate with other specific implementation modes of this utility model,
These modes are fallen within the protection scope of the utility model.
Claims (10)
1. a kind of electric tool, is powered using battery pack, which is characterized in that the electric tool includes:
Casing, is provided with tool terminal, the battery pack be detachably mounted on the casing with the tool ends end
Son electrical connection；And
Protector is movably set on the casing, and the protector is configured as in the battery pack and the casing
The tool terminal is provide with when in discrete state.
2. electric tool according to claim 1, which is characterized in that
The protector is slideably positioned on the casing and is provided on the protector and keeps away for what the tool terminal passed through
Allow mouth；The protector is configured as being pushed during the battery pack is bound to the casing by the battery pack and slide
It is electrically connected with exposing the tool terminal with the battery pack.
3. electric tool according to claim 2, which is characterized in that
Be provided with elastic component between the protector and the casing, the elastic component be configured as providing to the protector to
It is provide with the elastic force of tool terminal direction movement.
4. electric tool according to claim 2, which is characterized in that
The tool ends end attached bag includes the first tool terminal and the second tool terminal, and tool circuit is provided in the casing, described
The both ends of tool circuit are electrically connected with the first tool terminal and the second tool terminal respectively；
It is provided on the protector
First resistor is configured as two when the battery pack and the casing are in discrete state with the tool circuit
End connection, disconnects when the battery pack is installed on the casing with institute's tool circuit.
5. electric tool according to claim 4, which is characterized in that
When the battery pack and the casing are in discrete state, the both ends of the first resistor respectively with first tool
Terminal and the second tool terminal connect.
6. electric tool according to claim 5, which is characterized in that
The both ends of the first resistor pass through conductive sheet and the first tool terminal and the second tool termination contact connects
It connects, the conductive sheet part is embedded on the protector.
7. electric tool according to claim 2, which is characterized in that
The tool ends end attached bag includes the first tool terminal and the second tool terminal, and tool circuit is provided in the casing, described
One end of tool circuit is electrically connected with the first tool terminal；
It is provided on the protector
Current limiting element, can limit the electric current for flowing through its own, the both ends of the current limiting element respectively with second tool
The electrical connection of the other end of terminal and the tool circuit；And
Conduct piece is connect with the other end of the tool circuit, and the resistance of the conduct piece is less than the electricity of the current limiting element
Resistance, the conduct piece are configured as during the battery pack is bound to the casing by breaking with the second tool terminal
It opens to be changed into and be connected with the second tool terminal.
8. electric tool according to claim 7, which is characterized in that
There is the protrusion for connecting with the second tool terminal on the conduct piece.
9. according to the described in any item electric tools of claim 2 to 8, which is characterized in that
The protector includes:
Main body is slideably positioned on the casing；
Shield is set to one end of the main body and for being provide with the tool terminal；And
First locating part, is set to the other end of the main body, first locating part be configured as in the battery pack and
It is abutted when the casing is in discrete state with the second locating part on the casing.
10. electric tool according to claim 9, which is characterized in that
Impeller is provided on first locating part, the impeller is arranged on second locating part and the impeller
For being abutted during the battery pack is bound to the casing with the battery pack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920321559.2U CN209526143U (en) | 2019-03-13 | 2019-03-13 | A kind of electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920321559.2U CN209526143U (en) | 2019-03-13 | 2019-03-13 | A kind of electric tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209526143U true CN209526143U (en) | 2019-10-22 |
Family
ID=68232357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920321559.2U Active CN209526143U (en) | 2019-03-13 | 2019-03-13 | A kind of electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209526143U (en) |
-
2019
- 2019-03-13 CN CN201920321559.2U patent/CN209526143U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 529, Jiangjun Avenue, Jiangning Economic and Technological Development Zone, Nanjing, Jiangsu Province Patentee after: Nanjing Quanfeng Technology Co.,Ltd. Address before: No. 529, Jiangjun Avenue, Jiangning Economic and Technological Development Zone, Nanjing, Jiangsu Province Patentee before: NANJING CHERVON INDUSTRY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |