A kind of novel grounded formula sealing liquid level sensor
Technical field
The invention belongs to automotive sensor technology fields, are specifically related to a kind of novel grounded formula sealing liquid level sensor.
Background technique:
Require the fuel level sensor floating bar assembly metal parts in fuel tank that must be grounded simultaneously in General Motors Overseas Corporation
Enter in vehicle body route, is moulded in the rocker arm of conductive material by metal contact piece in conventional contact resistor disc fuel level sensor
On, the contact on sheet metal is connected to fly rod with conductor and is mounted on rocker arm and can be grounded.But this connection type can not
It is realized on electronic type sealing fuel level sensor.
Summary of the invention:
The purpose of the present invention is to the deficiencies of the prior art, and provide a kind of novel grounded formula sealing level sensing
Device, it manufactures rocker arm and outer cover plate by using carbon material, and metal buckle structure is designed in outer cover plate, in draw pin group
Branch's pin is designed on part, is contacted and is grounded with the metal buckle in outer cover plate by branch's pin, to guarantee whole
A liquid level sensor is absolutely sealed.
In order to achieve the above objectives, technical scheme is as follows:
A kind of novel grounded formula sealing liquid level sensor, including chip assembly, it is characterised in that: set in the chip assembly
There are magnetoresistive chip and draw pin component, the lateral wall of the chip assembly is equipped with outer cover plate, and movable groove is equipped in outer cover plate, living
Rocker arm and buckle are equipped in dynamic groove, the draw pin component has branch's pin of side bending backward, and branch's pin passes through core
It the wall body of piece assembly and snaps connection together.
As a preferred embodiment of the above technical solution, the chip assembly includes skeleton and chip cover board, the front side of the skeleton
Face is equipped with chip placed cavity, is equipped with magnetoresistive chip in chip placed cavity.
As a preferred embodiment of the above technical solution, the draw pin component is moulded in chip assembly.
As a preferred embodiment of the above technical solution, the rocker arm is hinged between outer cover plate and chip assembly, is equipped in rocker arm
Magnet and float;Magnet is using radial magnetizing technique and is right against magnetoresistive chip;The magnetic field line of magnet penetrates the wall of magnetoresistive chip
Body-sensing answers magnetoresistive chip.
As a preferred embodiment of the above technical solution, the upper end of the rocker arm has the mounting hole through front-back, fly rod end
Float lever be plugged in mounting hole, the rear end face of the rocker arm is equipped with the fly rod for fixing fly rod and buckles;The fly rod
The top float is installed.
As a preferred embodiment of the above technical solution, the bottom end of the rocker arm is located at the top of buckle.
As a preferred embodiment of the above technical solution, the rocker arm and outer cover plate use the material injection containing carbon at
Type.
The beneficial effects of the present invention are:
It manufactures rocker arm and outer cover plate by using carbon material, and buckle structure is designed in outer cover plate, in draw pin
Branch's pin is designed on component, is contacted and is grounded with the metal buckle in outer cover plate by branch's pin, to guarantee
Entire liquid level sensor is absolutely sealed.
Detailed description of the invention:
Fig. 1 is schematic perspective view of the invention;
Fig. 2 is explosive view of the invention;
Fig. 3 is rearview of the invention;
Fig. 4 is the cross-sectional view in the direction B-B in Fig. 3;
In figure, 1, skeleton;2, draw pin component;3, magnetoresistive chip;4, chip cover board;5, magnet;6, rocker arm;7, outer cover plate;
8, fly rod;9, float;21, branch's pin;63, fly rod buckles;601, mounting hole;71, movable groove;74, it buckles;81, float
Lever.
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this specification
Revealed content is understood other advantages and efficacy of the present invention easily." top " mentioned in the present embodiment, " lower section " with
Attached drawing top itself, the direction of lower section are consistent, are only illustrated convenient for narration, rather than to limit the scope of the invention,
Its relativeness is altered or modified, under the content of no substantial changes in technology, also when being considered as the enforceable scope of the present invention.
As shown in figures 1 to 4, a kind of novel grounded formula seals liquid level sensor, including chip assembly, the chip assembly
Interior to be equipped with magnetoresistive chip 3 and draw pin component 2, the lateral wall of the chip assembly is equipped with outer cover plate 7, is equipped with and lives in outer cover plate 7
Groove 71 is moved, rocker arm 6 and buckle 74 are equipped in movable groove 71, there is the draw pin component 2 branch of side bending backward to draw
Foot 21, branch's pin 21 passes through the wall body of chip assembly and buckle 74 links together.
Further, the chip assembly includes skeleton 1 and chip cover board 4, and the leading flank of the skeleton 1 is equipped with chip
Placed cavity is equipped with magnetoresistive chip 3 in chip placed cavity.
Further, the draw pin component 2 is moulded in chip assembly.
Further, the rocker arm 6 is hinged between outer cover plate 7 and chip assembly, and magnet 5 is equipped in rocker arm 6 and is floated
Son 9.
Further, the upper end of the rocker arm 6 has the mounting hole 601 through front-back, the float thick stick of 8 end of fly rod
Bar 81 is plugged in mounting hole 601, and the rear end face of the rocker arm 6 is equipped with the fly rod for fixing fly rod 8 and buckles 63;The fly rod
8 the top is equipped with float 9.
Further, the bottom end of the rocker arm 6 is located at the top of buckle 74.
Further, the rocker arm 6 and outer cover plate 7 use the material injection containing carbon to form.
The present invention designs metal buckle structure using carbon material manufacture rocker arm and outer cover plate in outer cover plate,
Branch's pin is designed on draw pin component, is contacted and is grounded with the metal buckle in outer cover plate by branch's pin, thus
Guarantee being absolutely sealed for entire liquid level sensor.
The embodiment is to be illustrated the present invention, and is not intended to limit the present invention.Anyone skilled in the art
Without departing from the spirit and scope of the present invention, it modifies to the embodiment, therefore rights protection model of the invention
It encloses, should be as listed in the claims of the present invention.