CN112951628A - Dustproof direct current trigger switch of ultra-small size - Google Patents
Dustproof direct current trigger switch of ultra-small size Download PDFInfo
- Publication number
- CN112951628A CN112951628A CN202110224150.0A CN202110224150A CN112951628A CN 112951628 A CN112951628 A CN 112951628A CN 202110224150 A CN202110224150 A CN 202110224150A CN 112951628 A CN112951628 A CN 112951628A
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- China
- Prior art keywords
- dustproof
- push shaft
- circuit board
- reversing
- direct current
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- 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.)
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 20
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 239000011889 copper foil Substances 0.000 claims description 10
- 230000033001 locomotion Effects 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims 1
- 239000000428 dust Substances 0.000 description 13
- 230000009471 action Effects 0.000 description 5
- 239000012634 fragment Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/02—Bases, casings, or covers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/02—Bases, casings, or covers
- H01H9/06—Casing of switch constituted by a handle serving a purpose other than the actuation of the switch, e.g. by the handle of a vacuum cleaner
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- Push-Button Switches (AREA)
Abstract
The invention discloses a dustproof direct current trigger switch with an ultra-small body, which comprises a base body, a rear cover and a push shaft, wherein one end of the push shaft is arranged in a box body formed by the base body and the rear cover, the other end of the push shaft extends out of the box body, and a trigger is arranged on the box body; the base body is provided with a dustproof cover, the push shaft penetrates through the dustproof cover, a spring is sleeved on the dustproof cover, and the spring is arranged between the dustproof ring and the trigger; a sliding elastic sheet is arranged above the push shaft, a circuit board is arranged above the sliding elastic sheet, one end of the sliding elastic sheet is connected with the push shaft, and the other end of the sliding elastic sheet is connected with the circuit board; and a resistance band is arranged on the circuit board.
Description
Technical Field
The invention relates to the technical field of electric tool switches, in particular to a dustproof direct current trigger switch with an ultra-small size.
Background
The existing direct current switch used in the field of electric tools has the following defects in practical use: 1. the overall size is large, which is not beneficial to compact installation and cannot be applied to portable electric tools; 2. the dustproof design is unreasonable, easily leads to inside to store up the dust, influences the switch and uses.
In view of the above, chinese patent publication No. CN108962644A proposes a dustproof dc trigger signal switch with an ultra-small size, which is used to solve the above problems. Through researching the technical scheme of the invention and combining the use, the following defects to be solved are found: 1. the reset spring is arranged in the base through a positioning block and positioning column structure, so that the push shaft and the trigger can be reset, the structure in the base is complicated due to the structure, and the compactness of the body type cannot be realized; 2. the reversing mechanism adopts: set up the pit after covering, installation spring and ball cooperate on the switching-over turning block, and such structure, spring and ball are not convenient for obtain the location in the assembly, drop easily, influence assembly efficiency.
To this end, we propose further improvements.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a dustproof direct current trigger switch with an ultra-small size, which is compact in structure, convenient to assemble and good in dustproof effect.
The technical scheme adopted by the invention for solving the technical problems is as follows: a dustproof direct current trigger switch of a super-small body type comprises a base body, a rear cover and a push shaft, wherein one end of the push shaft is arranged in a box body formed by the base body and the rear cover, the other end of the push shaft extends out of the box body, and a trigger is arranged on the box body; the device is characterized in that a dustproof cover is arranged on the base body, the push shaft penetrates through the dustproof cover, a spring is sleeved on the dustproof cover, and the spring is arranged between the dustproof ring and the trigger; a sliding elastic sheet is arranged above the push shaft, a circuit board is arranged above the sliding elastic sheet, one end of the sliding elastic sheet is connected with the push shaft, and the other end of the sliding elastic sheet is connected with the circuit board; and a resistance band is arranged on the circuit board.
In the above technical scheme, further, the push shaft includes a positioning guide plate, a push shaft groove is provided on the positioning guide plate, and the terminal of the sliding elastic piece is clamped in the push shaft groove.
Among the above-mentioned technical scheme, furtherly, the circuit board is two-sided circuit board, the top of circuit board is provided with the switching-over action bars, the switching-over action bars rotates and sets up on the box, and its first end can be arranged in the different switching-over spouts on the trigger, and its second end is last to install the switching-over shell fragment and be provided with a plurality of switching-over recesses, be provided with the locating hole in the back lid, install reversing spring and switching-over steel ball in the locating hole, the switching-over steel ball location is in one of them of switching-over spout.
In the above technical scheme, further, a dust ring is installed between the dust cover and the rear cover, the dust ring is sleeved on the push shaft and in elastic interference fit with the push shaft, and the dust cover and the dust ring are both provided with mutually sealed and matched steps.
In the above technical scheme, further, the shield with the back lid joint cooperation.
Among the above-mentioned technical scheme, furtherly, be provided with first spring constant head tank on the shield, be provided with second spring constant head tank in the trigger, first spring constant head tank and second spring constant head tank are arranged respectively in to the spring.
In the above technical scheme, further, a positioning groove is formed in the rear cover, the positioning hole is arranged in the positioning groove, and the reversing steel ball is not higher than the positioning groove after being installed.
Among the above-mentioned technical scheme, furtherly, be provided with the guide way on the base body, be provided with the gib block on the trigger, the gib block with guide way sliding fit is used for right the trigger plays spacing guide effect when the activity.
In the above technical solution, further, the lower surface of the circuit board is provided with a resistance tape, a first copper foil set and a second copper foil, and the upper surface of the circuit board is provided with a third copper foil set; a fourth copper foil group connected with the flat cable is arranged at the end part of the circuit board, and the fourth copper foil group is a double-sided copper foil group with a conductive hole; the upper and lower surfaces of the circuit board are provided with connecting bands.
The invention has the beneficial effects that: 1. the positioning structure of the spring for resetting the trigger is optimally designed, and the positioning structure is arranged between the trigger and the dustproof cover, so that the structure inside the base body is simplified, the size of the switch can be further reduced, the switch is suitable for various rechargeable electric tools, the whole machine is very easy to assemble, and the tool handle can be designed to be thinner and is favorable for grasping.
2. When the volume can reduce, through the cooperation of shield and dust ring, can make when pushing away the axle and moving, guarantee its leakproofness, possess outstanding dustproof function.
3. The reversing mechanism has the advantages that the functions of on-off, speed regulation, boosting and voltage reduction of the electric tool can be realized, the reversing function of the electric tool can also be realized, and the reversing mechanism is optimized, so that the reversing steel balls and the reversing springs are not easy to drop during assembly, the assembly difficulty is simplified, and the assembly efficiency is greatly improved.
Drawings
The invention is further illustrated with reference to the following figures and examples.
Fig. 1 is an exploded view of the structure of the present invention.
Fig. 2 is an exploded view of another aspect of the present invention.
Fig. 3 is a schematic view of the internal structure of the present invention.
Fig. 4 is a schematic view of the internal structure of another aspect of the present invention.
Fig. 5 is an enlarged schematic view at a in fig. 4 of the present invention.
Fig. 6 is a schematic elevation structure of the present invention.
Fig. 7 is a schematic view of another angle of the present invention.
In the figure, 1, a base body, 2, a rear cover, 3, a push shaft, 4, a trigger, 5, a dust cover, 51, a dust ring, 6, a spring, 7, a sliding elastic sheet, 71, a buckle, 8, a circuit board, 10, a positioning guide plate, 11, a push shaft groove, 12, a reversing operating rod, 121, a deflector rod, 13, a reversing chute, 14, a reversing elastic sheet, 15, a reversing groove, 16, a positioning hole, 17, a reversing spring, 18, a reversing steel ball, 19, a first spring positioning groove, 20, a second spring positioning groove, 21, a positioning groove, 22, a guide groove and 23 a guide bar.
Detailed Description
Referring to fig. 1-7, there are shown embodiments of the present invention: a dustproof direct current trigger 4 switch of a super-small size comprises a base body 1, a rear cover 2 and a push shaft 3, wherein one end of the push shaft 3 is arranged in a box body formed by the base body 1 and the rear cover 2, the other end of the push shaft 3 extends out of the box body, and a trigger 4 is arranged on the box body; a dustproof cover 5 is arranged on the base body 1, the push shaft 3 penetrates through the dustproof cover 5, a spring 6 is sleeved on the dustproof cover 5, and the spring 6 is arranged between the dustproof ring 51 and the trigger 4; a sliding elastic sheet 7 is arranged above the push shaft 3, a circuit board 8 is arranged above the sliding elastic sheet 7, one end of the sliding elastic sheet 7 is connected with the push shaft 3, and the other end of the sliding elastic sheet 7 is connected with the circuit board 8; and a resistance band is arranged on the circuit board 8.
In order to fix the sliding elastic sheet 7 conveniently, the push shaft 3 comprises a positioning guide plate 10, a push shaft groove 11 is formed in the positioning guide plate 10, and a terminal of the sliding elastic sheet 7 is clamped in the push shaft groove 11. Preferably, a buckle 71 is arranged on the terminal of the sliding elastic sheet 7, and the buckle 71 is obliquely arranged in the push shaft groove 11. Through set up the buckle 71 of slope on the terminal of slip shell fragment 7 to through this buckle 71 with slip shell fragment 7 card in pushing away a recess 11, thereby avoided the in-process that removes, take place relative motion between slip shell fragment 7 and the push away axle 3 and lead to the unable normal condition of work of switch that this embodiment provided to take place.
In order to realize the switching-over of switch, circuit board 8 is double-sided circuit board 8, the top of circuit board 8 is provided with switching-over action bars 12, switching-over action bars 12 rotates and sets up on the box, and its first end can be arranged in different switching-over spouts 13 on the trigger 4, and its second end is last to install switching-over shell fragment 14 and be provided with a plurality of switching-over recesses 15, be provided with locating hole 16 in the back lid 2, install reversing spring 17 and switching-over steel ball 18 in the locating hole 16, switching-over steel ball 18 is fixed a position one of them of switching-over spouts 13.
In order to further guarantee the leakproofness, promote dustproof effect, shield 5 with install dust ring 51 between the back lid 2, dust ring 51 cover is established push away epaxial 3 with its elasticity interference fit, shield 5 with dust ring 51 is last all to be provided with the step of mutual seal fit. Furthermore, the dust cover 5 is matched with the rear cover 2 in a clamping manner.
To facilitate the assembly of the spring 6 and to prevent it from falling off during use. The dustproof cover 5 is provided with a first spring positioning groove 19, the trigger 4 is provided with a second spring positioning groove 20, and the spring 6 is arranged in the first spring positioning groove 19 and the second spring positioning groove 20 respectively.
In order to further prevent the reversing steel ball 18 and the reversing spring 17 from falling off, the assembly is convenient. A positioning groove 21 is formed in the rear cover 2, the positioning groove 21 is formed by a groove body between two surfaces, the positioning hole 16 is arranged in the positioning groove 21 and is one part of the positioning groove 21, and the reversing steel ball 18 is not higher than the positioning groove 21 after being installed. During assembly, the reversing spring 17 can be placed in the positioning groove 21, the reversing steel balls 18 are placed, the reversing groove 15 in the reversing operating rod 12 is matched with the reversing steel balls 18, and then the reversing operating rod 12 is assembled on the box body. The reversing steel balls 18 can be ensured not to fall off only by ensuring that the rear cover 2 is not completely toppled over, and the assembly is very convenient.
Further, a guide groove 22 is formed in the base body 1, a guide strip 23 is arranged on the trigger 4, and the guide strip 23 is in sliding fit with the guide groove 22 and used for limiting and guiding the trigger 4 during movement.
In order to ensure the on-off, speed regulation and reversing of the switch, a resistance belt, a first copper foil set and a second copper foil are arranged on the lower surface of the circuit board 8, and a third copper foil set is arranged on the upper surface of the circuit board 8; a fourth copper foil group connected with the flat cable is arranged at the end part of the circuit board 8, and the fourth copper foil group is a double-sided copper foil group with a conductive hole; the upper and lower surfaces of the circuit board 8 are provided with connecting bands. The above technical features are not shown in the figures and are conventional in the art.
The implementation process of the invention comprises the following steps: the trigger 4 is pressed, the push shaft 3 moves towards the direction of the rear cover 2 under the action of the trigger 4, the push shaft 3 drives the sliding elastic sheet 7 arranged above the push shaft 3 to move along with the movement in the moving process, so that the first copper foil group on the lower surface of the circuit board 8 is switched on, the flat cable arranged on the circuit board 8 outputs a switching-on signal to a control board of the electric tool, and the control board controls the electric tool to be electrified after obtaining the switching-on signal; and continuously pressing the trigger 4, continuously driving the sliding elastic sheet 7 to move by the push shaft 3, enabling the resistance of the carbon film contacted with the sliding elastic sheet 7 to be changed from large to small, outputting the change signal to a control board of the electric tool by a flat cable arranged on the circuit board 8, and controlling the electric tool to be electrified, speed-regulated and boosted by the control board after the change signal is obtained. Therefore, the switch provided by the embodiment realizes the functions of switching on, regulating speed and boosting voltage of the electric tool.
When the trigger 4 is released, the spring 6 drives the trigger 4 to reset, in the process, the push shaft 3 and the sliding elastic sheet 7 arranged on the push shaft 3 also move along with the push shaft, so that the resistance of the carbon film contacted with the sliding elastic sheet 7 is changed from small to large, the flat cable arranged on the circuit board 8 outputs the change signal to a control board of the electric tool, and the control board controls the electric tool to be electrified, speed-regulated and voltage-reduced after obtaining the change signal; and continuously releasing the trigger 4, and enabling the spring 6 to reset the trigger 4 to the initial state and enabling the sliding elastic sheet 7 to return to the initial state, wherein the switch is disconnected.
When the reversing is needed, the shifting rod 121 on the reversing operation rod 12 is shifted, the reversing operation rod 12 rotates, the reversing elastic sheet 14 rotates along with the reversing operation rod and is positioned at different positions of the circuit board 8 to be contacted with different copper foil sets, the reversing steel balls 18 automatically fall into the new reversing groove 15 in the process, the reversing operation rod 12 is locked, and the trigger 4 is pressed immediately to switch on a circuit, so that the reversing output of the motor is realized.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and simple modifications, equivalent changes and modifications may be made without departing from the technical scope of the present invention.
Claims (9)
1. A dustproof direct current trigger switch of a super-small body type comprises a base body, a rear cover and a push shaft, wherein one end of the push shaft is arranged in a box body formed by the base body and the rear cover, the other end of the push shaft extends out of the box body, and a trigger is arranged on the box body; the device is characterized in that a dustproof cover is arranged on the base body, the push shaft penetrates through the dustproof cover, a spring is sleeved on the dustproof cover, and the spring is arranged between the dustproof ring and the trigger; a sliding elastic sheet is arranged above the push shaft, a circuit board is arranged above the sliding elastic sheet, one end of the sliding elastic sheet is connected with the push shaft, and the other end of the sliding elastic sheet is connected with the circuit board; and a resistance band is arranged on the circuit board.
2. The ultra-small dustproof direct current trigger switch according to claim 1, wherein the push shaft comprises a positioning guide plate, a push shaft groove is arranged on the positioning guide plate, and a terminal of the sliding elastic sheet is clamped in the push shaft groove.
3. The ultra-small dustproof direct current trigger switch according to claim 1 or 2, wherein the circuit board is a double-sided circuit board, a reversing operation rod is arranged above the circuit board, the reversing operation rod is rotatably arranged on the box body, a first end of the reversing operation rod can be arranged in different reversing chutes on the trigger, a reversing elastic sheet and a plurality of reversing grooves are arranged on a second end of the reversing operation rod, a positioning hole is arranged in the rear cover, a reversing spring and a reversing steel ball are arranged in the positioning hole, and the reversing steel ball is positioned in one of the reversing chutes.
4. The ultra-small dustproof direct current trigger switch according to claim 1, wherein a dustproof ring is installed between the dustproof cover and the rear cover, the dustproof ring is sleeved on the push shaft and is in elastic interference fit with the push shaft, and steps which are in sealing fit with each other are arranged on the dustproof cover and the dustproof ring.
5. The ultra-small dustproof direct current trigger switch according to claim 4, wherein the dustproof cover is engaged with the rear cover in a snap fit manner.
6. The ultra-small dustproof direct current trigger switch according to claim 4 or 5, wherein the dustproof cover is provided with a first spring positioning groove, the trigger is provided with a second spring positioning groove, and the springs are respectively arranged in the first spring positioning groove and the second spring positioning groove.
7. The ultra-small dustproof direct current trigger switch according to claim 3, wherein a positioning groove is formed in the rear cover, the positioning hole is arranged in the positioning groove, and the reversing steel ball is not higher than the positioning groove after being installed.
8. The ultra-small dustproof direct current trigger switch according to claim 1, wherein a guide groove is arranged on the base body, a guide bar is arranged on the trigger, and the guide bar is in sliding fit with the guide groove and used for limiting and guiding the trigger during movement.
9. The ultra-small dustproof direct current trigger switch according to claim 1, wherein the lower surface of the circuit board is provided with the resistance tape, a first copper foil set and a second copper foil, and the upper surface of the circuit board is provided with a third copper foil set; a fourth copper foil group connected with the flat cable is arranged at the end part of the circuit board, and the fourth copper foil group is a double-sided copper foil group with a conductive hole; the upper and lower surfaces of the circuit board are provided with connecting bands.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110224150.0A CN112951628A (en) | 2021-03-01 | 2021-03-01 | Dustproof direct current trigger switch of ultra-small size |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110224150.0A CN112951628A (en) | 2021-03-01 | 2021-03-01 | Dustproof direct current trigger switch of ultra-small size |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112951628A true CN112951628A (en) | 2021-06-11 |
Family
ID=76246818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110224150.0A Pending CN112951628A (en) | 2021-03-01 | 2021-03-01 | Dustproof direct current trigger switch of ultra-small size |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112951628A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206116253U (en) * | 2016-08-31 | 2017-04-19 | 张家港华捷电子有限公司 | Electric tool switch |
| CN108962644A (en) * | 2018-09-04 | 2018-12-07 | 浙江佳奔电子有限公司 | A kind of dust-proof DC trigger signaling switch of extra small figure |
| CN209641534U (en) * | 2019-04-10 | 2019-11-15 | 浙江佳奔电子有限公司 | A kind of quick on-off trigger with dust reduction capability |
-
2021
- 2021-03-01 CN CN202110224150.0A patent/CN112951628A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206116253U (en) * | 2016-08-31 | 2017-04-19 | 张家港华捷电子有限公司 | Electric tool switch |
| CN108962644A (en) * | 2018-09-04 | 2018-12-07 | 浙江佳奔电子有限公司 | A kind of dust-proof DC trigger signaling switch of extra small figure |
| CN209641534U (en) * | 2019-04-10 | 2019-11-15 | 浙江佳奔电子有限公司 | A kind of quick on-off trigger with dust reduction capability |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210611 |