The tamper electronic installation
Technical field
The utility model relates to the electric non-stop toll field, relates in particular to a kind of tamper electronic installation.
Background technology
At electronic charging system without parking (Electronic Toll Collection; Be called for short ETC) in, the pressure lever type breaking-proof switch that electronic tag used in (On Board Unit is called for short OBU); As shown in Figure 1; The main element of existing pressure lever type breaking-proof switch is a sensitive switch, the input/output terminal of sensitive switch respectively with pcb board on the contact be connected, when pressing moulded rod 4; Depression bar 4 is depressed the switch contact 2 that is arranged on the sensitive switch box body 1 through the driving member on the sensitive switch 3, makes the circuit on sensitive switch and the pcb board form the loop.Because the sensitive switch volume is bigger, causes electrons labeling apparatus volume is big, becomes those skilled in the art's an open question always for a long time, has a strong impact on the attractive in appearance of electronic tag profile.
Therefore prior art is demanded urgently improving.
The utility model content
The technical problem that the utility model will solve is the deficiency to prior art, and a kind of tamper electronic installation that effectively reduces volume is provided.
The technical problem that the utility model will solve is solved through following technical scheme:
A kind of tamper electronic installation comprises shell, depression bar and is arranged on the pcb board in the said shell that said shell is provided with through hole; Said depression bar is arranged among the said through hole; Also comprise cantilever-shaped shell fragment, said shell fragment is arranged in the said shell, and said pcb board comprises a PCB contact and the 2nd PCB contact; When said depression bar was depressed, the circuit on the said PCB contact of said shell fragment conducting and said the 2nd PCB contact and the said pcb board formed the loop.
Said shell fragment comprises free end, stiff end and press surface; Said stiff end is installed on the said pcb board and with said the 2nd PCB contact and is connected; Said press surface is arranged between said free end and the said stiff end and with said depression bar and cooperates, and said free end cooperates with a said PCB contact.
Said shell fragment comprises free end, stiff end and press surface; Said stiff end is installed on the said pcb board; Said press surface is arranged between said free end and the said stiff end and with said depression bar and cooperates, and said free end cooperates with a said PCB contact and said the 2nd PCB contact respectively.
Said free end is provided with first shrapnel contact and second shrapnel contact, and said first shrapnel contact cooperates with a said PCB contact, first shrapnel contact that said second shrapnel contact cooperates with said the 2nd PCB contact.
Said stiff end comprises first leg, and said pcb board comprises first mounting groove that cooperates with said first leg, and said first leg passes said first mounting groove.
Said first leg is provided with first welding hole.
Said stiff end comprises also and symmetrically arranged second leg of said first leg that said pcb board comprises second mounting groove that cooperates with said second leg, and said second leg passes said second mounting groove.
Also be included in the stopping means that can limit said shell fragment movement travel when said depression bar is depressed.
Said stopping means comprises from said shell fragment to the extended banking stop of said pcb board direction.
Said banking stop comprises first banking stop and second banking stop that is symmetricly set on said shell fragment both sides.
Owing to adopted above technical scheme, the beneficial effect that the utility model is possessed is:
In the embodiment of the utility model, owing to comprise setting cantilever-shaped shell fragment in the enclosure, when depression bar is depressed; PCB contact on the shell fragment conducting pcb board and the 2nd PCB contact, and form the loop with circuit on the pcb board, compared to traditional schemes such as pressure lever type breaking-proof switch of the prior art; The cantilever-shaped shell fragment conducting stroke of the utility model shortens, and the inner space that takies is littler, can make the attenuation of tamper electronic installation profile; Smaller volume; Improved user's experience, simultaneously, also decreased than the traditional scheme cost.
Description of drawings
Fig. 1 is the partial structurtes sketch map of the electronic tag of use sensitive switch;
Fig. 2 is the perspective view of the shell fragment in a kind of execution mode of the utility model;
Fig. 3 is the cut-away view of the tamper electronic installation in a kind of execution mode of the utility model;
Fig. 4 is the enlarged diagram of A part among Fig. 3.
Embodiment
Combine accompanying drawing that the utility model is done further explain through embodiment below.
Extremely shown in Figure 3 like Fig. 1, the tamper electronic installation of the utility model, its a kind of execution mode comprises shell 30, depression bar 32, pcb board 20 and cantilever-shaped shell fragment 10, and shell 30 has cavity, and shell fragment 10 is arranged in the cavity with pcb board 20.Pcb board 20 comprises a PCB contact 21 and the 2nd PCB contact (figure does not show), and shell 30 is provided with through hole 31, and depression bar 32 is arranged among the through hole 31, and can be under external force along through hole 31 direction activities.The tamper electronic installation comprises operating state and non operating state, and when the tamper electronic installation was in running order, depression bar 32 was depressed; A shell fragment 10 and a PCB contact 21 and the 2nd PCB contact conducting; Make the circuit on the pcb board form the loop, when the tamper electronic installation is in non operating state, promptly when depression bar 32 is in free state; One end of shell fragment 10 separates with pcb board, and the circuit on shell fragment 10 and the pcb board can not form the loop.The tamper electronic installation can be an electronic tag, also can be other electronic equipments
In one embodiment, shell fragment 10 comprises free end 11, stiff end 12 and press surface 13, and stiff end 12 is used for shell fragment 10 is installed in pcb board 20; Stiff end 12 is connected with the 2nd PCB contact; Press surface 13 cooperates with depression bar 32, and free end 11 cooperates with a PCB contact 21, and press surface 13 is arranged between free end 11 and the stiff end 12; Press surface 13 cooperates with depression bar 32; Press surface 13 is higher than free end 11 and stiff end 12 on depression bar 32 directions of motion, depression bar 32 is depressed, and drives free end 11 and contacts with a PCB contact 21.In this execution mode, free end 11 can be provided with shrapnel contact, and shrapnel contact cooperates with a PCB contact 21.Shrapnel contact can be provided with one, also can be provided with a plurality of.
In one embodiment; Shell fragment 10 comprises free end 11, stiff end 12 and press surface 13; Stiff end 12 is installed on the pcb board 20; Press surface 13 is arranged between free end 11 and the stiff end 12, and press surface 13 cooperates with depression bar 32, and free end 11 cooperates with a PCB contact 21 and the 2nd PCB contact respectively.
In one embodiment, free end 11 can be provided with shrapnel contact, and shrapnel contact cooperates with the 2nd PCB contact.Shrapnel contact can comprise first shrapnel contact 141 and second shrapnel contact 142; First shrapnel contact 141 cooperates with a PCB contact 21; Second shrapnel contact 142 cooperates with the 2nd PCB contact, and first shrapnel contact 141 and second shrapnel contact 142 are arranged at not end surfaces of free end 11.
In one embodiment; Stiff end 12 comprises first leg 161, and pcb board 20 comprises first mounting groove (figure does not show), and first mounting groove cooperates with first leg 161; First leg 161 can pass first mounting groove, can shell fragment 10 be fixed on the pcb board 20 through welding first leg 161.
In one embodiment, after first leg 161 is provided with first welding hole, 171, the first legs 161 and passes first mounting groove on the pcb board 20, weld through first welding hole 171.
In one embodiment; Stiff end 12 comprises that also second leg, 162, the second legs 162 and first leg 161 are symmetrical set, and pcb board 20 also comprises second mounting groove (figure does not show); Second mounting groove cooperates with second leg 162, and second leg 162 can pass second mounting groove.
In one embodiment, the tamper electronic installation of the utility model also comprises stopping means, and stopping means can limit the movement travel of shell fragment 10 when depression bar 32 is depressed.
In one embodiment, stopping means comprises banking stop, and banking stop extends to pcb board 20 directions from the side of shell fragment 10, and when the tamper electronic installation was in running order, banking stop contacted with pcb board 20, in order to support shell fragment 10, prevents that shell fragment 10 lost efficacy.
In one embodiment, banking stop comprises that first banking stop 151 and second banking stop, 152, the first banking stops 151 and second banking stop 152 are symmetricly set on shell fragment 10 both sides.
Above content is the further explain that combines concrete execution mode that the utility model is done, and can not assert that the practical implementation of the utility model is confined to these explanations.For the those of ordinary skill of technical field under the utility model, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be regarded as belonging to the protection range of the utility model.