CN208867796U - External tyre pressure meter - Google Patents

Abstract

The utility model provides a kind of external tyre pressure meter, solve the problems, such as that pedestal assembles trouble processing cost with jacking block and material cost is higher, its key points of the technical solution are that including shell, pressure sensor and circuit board are equipped in shell, shell includes pedestal and jacking block, it is integrally formed by Shooting Technique, mounting groove is equipped in pedestal, mounting groove inner wall is equipped with internal screw thread, pedestal includes the bottom plate positioned at installation trench bottom, pressure sensor is set to the side of opening of the pedestal far from mounting groove, jacking block is set to bottom plate center, the airtube be connected with pressure sensor and mounting groove is equipped in jacking block.Jacking block and shell are integrally formed, without assembling to jacking block and shell, reduce processing cost, and jacking block and shell are plastic material, save material cost；The jacking block of plastic material is harder with respect to for the jacking block of silica gel material simultaneously, is not susceptible to wear after the valve rod being used for a long time on press valve cock, improves service life.

Description

External tyre pressure meter

Technical field

The utility model relates to tire gauge field more particularly to a kind of external tyre pressure meters.

Background technique

External tyre pressure meter is a kind of device for monitoring vehicle tire air pressure.Common external tyre pressure meter figure is smaller, Be directly mounted on the valve cock of automobile tire, while the car is driving can real-time monitoring automobile tire pressure.It is existing The mode that external tyre pressure meter is connected through a screw thread is fixed with tyre valve, and tire gauge includes shell, and shell is plastics Material, is fixed with metalwork in shell, metalwork shape in a ring, and metalwork inner wall is equipped with the spiral shell cooperated with tyre valve Line, metalwork middle part are additionally provided with the plunger tip for opening valve cock valve rod, and plunger tip is silica gel material, but due to tire gauge figure Smaller, processing cost is higher when metalwork, silica gel and shell three are assembled, while carrying out processing gold using metal material Belong to part, improves the cost of material.

Utility model content

The purpose of the utility model is to provide a kind of external tyre pressure meters, and overall processing cost and material can be saved by having The effect of cost.

To achieve the goals above, the utility model is the following technical schemes are provided: a kind of external tyre pressure meter, including shell Body, the shell is interior to be equipped with pressure sensor and circuit board, and the pressure sensor and circuit board are fixed and be electrically connected, the shell Body includes pedestal and jacking block, is integrally formed by Shooting Technique, and the installation protruded into for tyre valve is equipped in the pedestal Slot, the mounting groove inner wall are equipped with internal screw thread, and the pedestal includes the bottom plate positioned at installation trench bottom, and the pressure sensor is set It is placed in the side of opening of the pedestal far from mounting groove, the jacking block is set to bottom plate center and prolongs towards mounting groove opening direction It stretches, the airtube be connected with pressure sensor and mounting groove is equipped in the jacking block.

Through the above scheme, jacking block and pedestal are integrally formed, without assembling to jacking block and pedestal, reduce processing Cost, and jacking block and pedestal are plastic material, save material cost；The jacking block of plastic material is with respect to material for silica gel simultaneously Matter is harder, is not susceptible to wear after the valve rod being used for a long time on press valve cock, improves service life.Valve is pressed in jacking block After bar, the gas in tire is conducted at pressure sensor by airtube to be detected.

Further setting: the jacking block is equipped with the air guide notch radially extended, institute close to the end of the opening of mounting groove Air guide notch is stated to be connected to airtube.

Through the above scheme, after jacking block presses valve rod, the gas in tire can enter airtube by air guide notch It is interior, it is more unobstructed when entering gas in airtube.

Further setting: gasket, the pressure are equipped between installation trench bottom and pressure sensor and the bottom plate Sensor and gasket push against, and are equipped with the ventilation being connected to airtube with the gasket that the pressure sensor pushes against Hole, the gasket for being set to the installation trench bottom is tightly connected with mounting groove and jacking block, and its thickness is less than jacking block Highly.

Through the above scheme, the air-tightness at airtube both ends can be improved in gasket, prevents the gas leakage contribution in tire Tire pressure test result, while bringing security risk.

Further setting: the bottom plate is equipped with the intercommunicating pore being connected to the mounting groove, and the gasket is silica gel material Matter, the gasket positioned at the bottom plate two sides is by being integrally formed.

Through the above scheme, the gasket of bottom plate two sides can be made to be integrally formed using injection molding forming method, saves production Cost is improved production efficiency, while being linked together the gasket of bottom plate two sides using intercommunicating pore, and gasket and shell are made It connects stronger, improves the air-tightness of gasket Yu pedestal junction.

Further setting: further including antenna, described antenna one end is connect with circuit board, and other end downward bending then crimps It circularizes and both ends head and the tail is not attached to.

Through the above scheme, pressure sensor can launch outward signal by antenna after detecting the air pressure in tire, Real-time monitoring information is provided for motorist, antenna crimps circlewise, can be by antenna to the space benefit in shell inner height direction Electromagnetic Wave Propagation is enhanced in the identical length for extending antenna to a certain extent with the utilization being converted into radial space Signal strength makes signal communication effect more preferably.

Further setting: the circuit board is equipped with the negative electrode tab being electrically connected with button cell, and the negative electrode tab is equipped with Fixed feet, the circuit board are equipped with the fixation hole that passes through for fixed feet, and the fixed feet is equipped with bullet card, and the bullet card can be The fixed feet is connected to the circuit board backwards to the side of negative electrode tab after the fixation hole of circuit board.

Through the above scheme, when connecting negative electrode tab and circuit board, the fixed feet in negative electrode tab need to be only inserted by operator Into fixation hole, the bullet in fixed feet is stuck in by elastic deformation occurs when fixation hole, after bullet card passes through fixation hole completely, bullet Card is returned to original shape, and is clamped with circuit board, and during installation, operator only needs just can be by cathode by pressing Piece is fixed with circuit board, reduces the difficulty of operation, improves production efficiency, also reduces cost of labor.

Further setting: the negative electrode tab includes plate, and the plate is equipped with the first elastic slice, and first elastic slice is towards flat Plate tilts bending close to circuit board side, and can abut simultaneously when the negative electrode tab is fixed with the circuit board with the circuit board Generate elastic deformation.

Through the above scheme, when negative electrode tab and fixed circuit board, the first elastic slice abuts with circuit board and elastic shape occurs Become, the first elastic slice keeps abutting state with circuit board always, and negative electrode tab is made to be not easy to occur both to be detached from and cause nothing with circuit board Method is electrically connected.

Further setting: the negative electrode tab is equipped with the second elastic slice, and the negative electrode tab is equipped with to be passed through for second elastic slice Accepting hole, first elastic slice are set in accepting hole and are staggered with the second elastic slice, and second elastic slice is remote towards negative electrode tab When connect from negative electrode tab described in the inclination bending of circuit board side with button cell, second elastic slice generation flexible deformation and with put down Plate flushes.

Through the above scheme, when negative electrode tab is connect with button cell, button cell be placed in positive plate and negative electrode tab it Between, the second elastic slice is generated elastic deformation by button cell pressure and flushes with negative electrode tab, and the second elastic slice can make negative electrode tab always Electric connection state is kept with button cell, is deviate between negative electrode tab and positive plate prevented also from button cell.

Further setting: being equipped with gasket between the negative electrode tab and circuit board, accepting hole is corresponded on the gasket and is equipped with confession The avoid holes of the first elastic slice merging and activity deformation.

Through the above scheme, circuit board and negative electrode tab can be isolated in gasket, prevent its in negative electrode tab and circuit board He gets an electric shock conducting, while gasket provides supporting role for negative electrode tab, makes plate be not susceptible to deform, connect more with circuit board Stablize, and gasket increases the spacing between circuit board and negative electrode tab, increases the deflection of the first elastic slice, make the first elastic slice with The connection of circuit board is stronger, is not susceptible to separate.

Further setting: being equipped with accommodating chamber backwards to mounting groove side in bottom plate in the shell, the pressure sensor and Antenna is set in accommodating chamber, and accommodating chamber peripheral wall top surface is provided at least two link blocks along casing center axisymmetrical, The link block is extended with briquetting towards the casing center axis, and the link block, briquetting and shell peripheral wall top surface form clamping Portion, the circuit board include plectane main body, and protrusion, the briquetting and casing center are extended on the circumference of the plectane main body The distance of axis is greater than the radius of plectane main body and is less than the radius that protrusion limits circumference, and the protrusion and clamping part clamp Cooperation.

Through the above scheme, when circuit board to be assembled on shell, circuit board is placed between link block, by turning Dynamic circuit board enters protrusion in clamping part, and circuit board is fixedly clamped using briquetting and shell peripheral wall top surface, is reached Circuit board and shell is set to be convenient for the effect being connected and fixed, installation difficulty reduces, and reduces cost of labor.

Compared with prior art, the embodiment of the utility model has the advantage that

1. in the external tyre pressure meter of the utility model, pedestal and jacking block are integrally formed, setting in the intracorporal mounting groove of shell Internal screw thread saves the trouble of jacking block and pedestal assembling, saves processing cost, and shell uses plastic material, saves material Expect cost, while the jacking block of plastic material is higher compared to the jacking block hardness of silica gel material, is not easy after press valve rod is used for a long time It wears, improves service life.

2. in external tyre pressure meter described in, the clamping on protrusion and shell on circuit board is made using rotation circuit plate Portion's clamping engagement, is fixed without screw, for tire gauge lesser for figure, substantially reduces installation difficulty, improves Production efficiency.

In external tyre pressure meter described in 3., when assembling negative electrode tab and circuit board, it is only necessary to be made admittedly by pressing negative electrode tab Determine foot to be inserted into fixation hole, be clamped using bullet card by fixation hole and with circuit board, realize the fixation of negative electrode tab and circuit board, Without reducing installation difficulty, improving production efficiency by being welded and fixed.

The additional aspect of the utility model and advantage will be set forth in part in the description, these will be from following description In become obvious, or recognized by the practice of the utility model.

Detailed description of the invention

The utility model is above-mentioned and/or additional aspect and advantage from the following description of the accompanying drawings of embodiments will Become obvious and be readily appreciated that, in which:

Fig. 1 is the cross-sectional view of the present embodiment；

Fig. 2 is the decomposition diagram of circuit module in the present embodiment；

Fig. 3 is the decomposition diagram of circuit board and casing connecting structure in the present embodiment.

Specific embodiment

The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and cannot be construed to the utility model Limitation.

The utility model relates to external tyre pressure meter, as shown in Figure 1 to Figure 3, including lid 1 and shell 2, the lid 1 is covered on outside shell 2 and is threadedly coupled with shell 2, and the shell 2 and lid 1 are plastic material.

The shell 2 includes pedestal 21 and jacking block 22, and the pedestal 21 is equipped with the mounting groove protruded into for tyre valve 211,211 inner wall of mounting groove is equipped with internal screw thread 2111, and the pedestal 21 includes bottom plate 212, and the mounting groove 211 is located at institute The side of bottom plate 212 is stated, the jacking block 22 is set to 212 center of bottom plate and extends towards 211 opening direction of mounting groove, The jacking block 22 is for pressing valve cock valve rod.Circuit module 3 is provided in the shell 2, the circuit module 3 includes circuit Plate 31 and pressure sensor 32, the pressure sensor 32 is fixed with circuit board 31 and is electrically connected, and is equipped with and leads in the jacking block 22 Air flue 221, the airtube 221 are connected with pressure sensor 32 and mounting groove 211 respectively.The jacking block 22 is close to the installation One end that slot 211 is open is equipped with the air guide notch 222 radially extended along jacking block 22, the air guide notch 222 and airtube 221 connections.

It is integrally formed using pedestal 21 and jacking block 22, the mode of internal screw thread 2111 is set in mounting groove 211, in process of production The process for reducing assembling pedestal 21 and jacking block 22 reduces processing cost, and shell 2 and jacking block 22 are plastic material, are reduced Material cost.The jacking block 22 of plastic material is compared existing higher using 22 hardness of jacking block of silica gel material simultaneously, and jacking block 22 exists It is not susceptible to wear after the valve rod being used for a long time on press valve cock, improves the service life of jacking block 22.

Lid 1 and 2 junction of shell are equipped with sealing ring 4.212 two sides of bottom plate are equipped with gasket 5, the gasket 5 be silica gel material, and injection molding manner is used to form.The bottom plate 212 is equipped with intercommunicating pore 2121,212 two sides of bottom plate Gasket 5 is linked together by intercommunicating pore 2121.The pressure sensor 32 is pushed against with gasket 5, in mounting groove 211 5 thickness of gasket is less than the height of jacking block 22.

When connecting with valve cock, gasket 5 plays sealing effect to 221 both ends of airtube, prevents in test tire pressure The leakage of Shi Fasheng gas, influences test effect and in turn results in security risk.Using intercommunicating pore 2121 by the sealing of 212 two sides of bottom plate Pad 5 is integrally formed, and can be improved production efficiency, while the gasket 5 of 212 two sides of bottom plate and the connection of pedestal 21 are more stable, 21 sealing performance of pedestal is improved.Setting sealing ring 4 can reduce external wet air or liquid at shell 2 and lid 1 It enters in shell 2, influences the normal work of circuit board 31.

Antenna 33 is additionally provided in the shell 2, one end of the antenna 33 is electrically connected with circuit board 31, and the other end is rolled over downwards It is curved then to crimp circlewise, and 33 both ends of antenna head and the tail are not attached to.It is equipped with and accommodates backwards to 211 side of mounting groove in the shell 2 Chamber 23, the pressure sensor 32 and antenna 33 are set in accommodating chamber 23.

After pressure sensor 32 detects the air pressure of automobile tire, is propagated outward by antenna 33 and carry tire pressure Electromagnetic wave signal, so that the display being mounted on automobile receives and shows, so that driver reads tire pressure in real time.Curling Antenna 33 circlewise can convert the utilization to radial space to the space utilization in 2 inner height direction of shell for antenna 33, In the identical length for extending antenna 33 to a certain extent, the intensity of signal transmitting is enhanced, communication effect is more preferably.

Incorporated by reference to Fig. 3, the short transverse on the shell 2 on the peripheral wall top surface of 23 side of accommodating chamber along shell 2 is prolonged Stretching has link block 24, and 24 quantity of link block is no less than two, and the link block 24 is distributed on the peripheral wall of shell 2.At this In embodiment, 24 quantity of link block is two, and the link block 24 is distributed in the radial two sides of shell 2.The link block 24 are extended with briquetting 25 towards 2 axis of shell, and the link block 24, briquetting 25 and 2 peripheral wall top surface of shell form clamping part 26.

The circuit board 31 includes plectane main body 311, extends on the circumference of the plectane main body 311 and is equipped with protrusion 312, The briquetting 25 greater than the radius of plectane main body 311 and is less than the half of the restriction circumference of protrusion 312 at a distance from 2 axis of shell Diameter, the protrusion 312 and 26 clamping engagement of clamping part.

When installing fixing circuit board 31, circuit board 31 is placed between two link blocks 24, rotation circuit plate is passed through 31 enter protrusion 312 in clamping part 26, and circuit board 31 is fixedly clamped using briquetting 25 and 2 peripheral wall top surface of shell, nothing It needs screw to assemble, reduces components, keep circuit board 31 more convenient when dismounting with shell 2, installation difficulty reduces, and reduces Cost of labor.

When protrusion 312 is located in clamping part 26, protrusion 312 is abutted with the medial surface of link block 24；Link block 24 Limit along 2 peripheral wall top surface direction of shell is provided to circuit board 31, is transferred to protrusion 312 in clamping part 26, circuit board 31 are not easy to slide along 2 peripheral wall top surface of shell, improve the stability that circuit board 31 is connect with shell 2.

The side of the clamping part 26 is equipped with block 27, and the block 27 is connect with link block 24.Block 27 can be in circuit When plate 31 turns to predetermined position, by 312 block of protrusion in side, assembled for operator in rotation circuit plate 31 When position-limiting action is provided.The block 27 is equal to the radius of plectane main body 311 at a distance from 2 central axis of shell.In rotation electricity During road plate 31 enters protrusion 312 in clamping part 26, the circumferential side wall of plectane main body 311 is protected with block 27 always Abutting state is held, prevents from sliding during circuit board 31 rotates along 2 peripheral wall top surface of shell, leads to the protrusion of circuit board 31 312 are difficult to be transferred in clamping part 26.

The clamping part 26 is gradually increased towards far from 27 direction of block, is rotated into clamping part 26 in protrusion 312 In the process, big end in contact of the protrusion 312 first with the bottom surface of briquetting 25 far from block 27 makes protrusion 312 be easier to import Into clamping part 26, the installation difficulty of operator is alleviated, is improved efficiency.It is convex as protrusion 312 is moved into clamping part 26 Portion 312 makes pressure sensor 32 and gasket 5 towards pressure sensing by 25 bottom surface of briquetting towards the lower pressure in 23 direction of accommodating chamber out One side pressure of device obtain it is tighter, sealing effect more preferably, effectively prevent when testing tire pressure occur gas leakage, influence test effect in turn Cause security risk.When protrusion 312, which is turned to, to abut with block 27, protrusion 312 just with 25 bottom surface of briquetting and shell 2 Peripheral wall top surface adaptation, can make protrusion 312 be not easy to deviate from out of clamping part 26 after being rotated into clamping part 26, improve The stability that circuit board 31 and shell 2 are connected and fixed.

The plectane main body 311 is equipped with the locating notch 3111 for gluing, and the locating notch 3111 makes operator It is more convenient, improves efficiency when gluing.Convex block 313 is extended on the circumferential side wall of the plectane main body 311, convex block 313 is operation Person's rotation circuit plate 31 is provided by means of force, and operator more saves when rotation circuit plate 31 is clamped installation or disassembly Power.

The circuit module 3 further includes the positive plate 34 being set on circuit board 31 and negative electrode tab 35, the positive plate 34 Button cell 37 is clamped between negative electrode tab 35.The positive plate 34 is equipped with card base 341, and the circuit board 31, which is equipped with, to be supplied Card base 341 is inserted into fixed jack 314.The negative electrode tab 35 is electrically connected with button cell 37 and the circuit board 31.It is described negative Pole piece 35 includes plate 352 and fixed feet 351, and the circuit board 31 is equipped with the fixation hole 315 passed through for fixed feet 351, institute Fixed feet 351 is stated equipped with bullet card 3511, when the negative electrode tab 35 is fixed with the circuit board 31, the bullet card 3511 is worn at it Side of the circuit board 31 backwards to negative electrode tab 35 is connected to after the fixation hole 315 of oversampling circuit plate 31.

When negative electrode tab 35 and circuit board 31 assemble, the fixed feet 351 in negative electrode tab 35 need to only be inserted into solid by operator Determine in hole 315, when passing through fixation hole 315 elastic deformation occurs for the bullet card 3511 in fixed feet 351, when bullet card 3511 is completely logical After crossing fixation hole 315, bullet card 3511 is returned to original shape, and abuts with circuit board 31, to realize negative electrode tab 35 and circuit The clamping of plate 31, during installation, operator only needs by that close to 351 side of fixed feet and will consolidate by locating back 352 Foot 351 is determined across fixation hole 315, just negative electrode tab 35 and circuit board 31 can be fixed, be reduced the difficulty of operation, improve Production efficiency also reduces cost of labor.

The connection of the positive plate 34 and circuit board 31 is arranged with fool proof, and the card base 341 and the jack 314 are all provided with There are two setting, two jacks 314 it is not of uniform size, positive plate 34 can not be inserted into rotating 180 ° of latter two card bases 341 In two jacks 314, there is fool proof effect.The negative electrode tab 35 also has fool proof setting, the plate with 36 junction of gasket 352 and 362 two sides of the accommodating groove shape it is different, when negative electrode tab 35 rotate 180 ° after, plate 352 can not be packed into accommodating groove In 362, to reach fool proof effect, the safety is improved.

The reception hole 3512 for the bullet card 3511 income is provided in the fixed feet 351；Pass through in bullet card 3511 solid When determining hole 315, bullet card 3511 can be taken in completely in reception hole 3512, make fixed feet 351 when being inserted into fixation hole 315 by The resistance arrived reduces, and can reduce the labor burden of operator during installation, while bullet card 3511 can be taken in reception hole 3512, The size of fixation hole 315 can be reduced, reduce the movable space in fixation hole 315 of fixed feet 351, improve negative electrode tab 35 and electricity The stability that road plate 31 connects.

When the negative electrode tab 35 is connected and fixed with circuit board 31, bullet card 3511 is turned over towards the direction far from 31 center of circuit board Out.In bullet card 3511 by after fixation hole 315, deformation occurs under elastic reaction resets for bullet card 3511, and bullet card 3511 is towards separate 31 center position of circuit board is routed up, and can be pressed bullet card 3511 in the outside of circuit board 31 convenient for operator, be collapsed it in fixation Foot 351 can simultaneously be deviate from out of fixation hole 315, and negative electrode tab 35 and the disassembly of circuit board 31 are more convenient.

352 center of plate is equipped with accepting hole 3521, and the opposite inner wall of the accepting hole 3521 is equipped with first Elastic slice 353 and the second elastic slice 354, first elastic slice 353 are staggered with the second elastic slice 354.First elastic slice, 353 quantity It is two, and it tilts fold towards the direction of circuit board 31 towards negative electrode tab 35, the quantity of second elastic slice 354 is two, And it tilts fold backwards to the direction of circuit board 31 towards negative electrode tab 35.When the negative electrode tab 35 is fixed with circuit board 31, the first bullet Piece 353 abuts with circuit board 31 and generates elastic deformation.When the negative electrode tab 35 is connect with button cell 37, second elastic slice It is flushed in 354 income accepting holes 3521 and with plate 352.

When negative electrode tab 35 and fixed circuit board 31, the first elastic slice 353 is pushed against with circuit board 31, and the first elastic slice 353 generates Deformation elastic force makes the first elastic slice 353 be not easy to separate with circuit board 31, guarantees that circuit board 31 and negative electrode tab 35 have and preferably electrically connects Connect effect.When negative electrode tab 35 is connect with button cell 37, elastic deformation occurs for the second elastic slice 354, and the second elastic slice 354 is in elastic force State is abutted with the holding of button cell 37 always under effect, button cell 37 and negative electrode tab 35 is made to have preferable effect in electrical contact Fruit, while button cell 37 can be prevented backing out between positive plate 34 and negative electrode tab 35.

Gasket 36 is equipped between the negative electrode tab 35 and circuit board 31, the gasket 36 is equipped with consistent with accepting hole 3521 Avoid holes 361.Circuit board 31 and negative electrode tab 35 can be isolated in gasket 36, prevent its in negative electrode tab 35 and circuit board 31 His component is in electrical contact, while gasket 36 is that negative electrode tab 35 provides supporting role, and plate 352 is made to be not susceptible to deform, with The connection of circuit board 31 is more stable, and gasket 36 increases the spacing between circuit board 31 and negative electrode tab 35, increases the first bullet The deflection of piece 353 keeps the connection of the first elastic slice 353 and circuit board 31 stronger, is not susceptible to separate.

The gasket 36 is equipped with the accommodating groove 362 being embedded in for negative electrode tab 35, is also provided on the peripheral wall of the gasket 36 The guide groove 363 passed through for fixed feet 351；Accommodating groove 362 provides positioning action for the assembling of gasket 36 and negative electrode tab 35, Negative electrode tab 35 can be embedded into accommodating groove 362 during installation, the two is made to be not susceptible to separate.The gasket 36 is equipped with positioning Foot 364, the circuit board 31 are equipped with the location hole 316 being inserted into for angle 364.It is fixed that location hole 316 provides for gasket 36 Position fixed function, prevent during installation gasket 36 along 31 surface of circuit board sliding cause fixed feet 351 to be difficult to alignment and fixation hole 315, to reduce installation difficulty.

The junction of the gasket 36 and circuit board 31 is arranged with fool proof, and the angle 364 and location hole 316 are divided equally Not She Zhi there are two, two angles 364 are diagonally arranged along gasket 36, two location holes 316 it is not of uniform size, two A angle 364 only can be inserted into corresponding location hole 316, have fool proof effect.

The specific installation and the course of work of external tire gauge in the utility model:

Shell 2 is made using being integrally formed, and is sealed by being molded gasket 5 in mounting groove 211.

In the technique of assembling, circuit module 3 can be assembled first, i.e., first complete positive plate 34, button cell 37, negative electrode tab 35, the assembling between gasket 36 and circuit board 31.

Specifically, it will be fixed in location hole 316 that the angle 364 on gasket 36 is inserted on circuit board 31, so The fixed feet 351 in negative electrode tab 35 is inserted into the fixation hole 315 on circuit board 31 again afterwards, the bullet card in fixed feet 351 3511 occur flexible deformation during through fixation hole 315, after bullet card 3511 passes through fixation hole 315 completely, bullet card 3511 reset under the action of elastic restoring force, and bullet card 3511 is connected and fixed with circuit board 31, and the first elastic slice 353 generates elastic shape Become and is abutted with the contact of circuit board 31.After the connection for completing negative electrode tab 35 and circuit board 31, by the card base 341 on positive plate 34 It is fixed in the jack 314 being inserted on circuit board 31.

Then in the installation to shell 2 of circuit board 31 assembling finished, circuit board 31 is placed in the peripheral wall top surface of shell 2 On, rotation circuit plate 31 enters protrusion 312 in clamping part 26 to be fixedly clamped.Button cell 37 is tucked into positive plate again The second elastic slice 354 is flattened between 34 and negative electrode tab 35, upper seal 4 is finally installed, and lid 1 and shell 2 are threadedly engaged i.e. Complete assembling.

During use, by shell 2 mounting groove 211 be aligned tire on valve cock, roll-shell 2 make its with Valve cock is threadedly coupled, and as valve cock enters in mounting groove 211, jacking block 22 presses the valve rod on valve cock, is made in tire Gas be conducted at pressure sensor 32 by airtube 221, pressure sensor 32 monitors resulting information and passes through antenna 33 Outside transmitting signal, so that motorist observes tire pressure at any time.

The above is only some embodiments of the utility model, it is noted that for the common skill of the art For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and Retouching also should be regarded as the protection scope of the utility model.

Claims (10)

1. a kind of external tyre pressure meter, including shell, the shell is interior to be equipped with pressure sensor and circuit board, the pressure sensing Device and circuit board are fixed and are electrically connected, it is characterized in that: the shell includes pedestal and jacking block, by Shooting Technique one at Type, the pedestal is interior to be equipped with the mounting groove protruded into for tyre valve, and the mounting groove inner wall is equipped with internal screw thread, the pedestal packet The bottom plate for being located at installation trench bottom is included, the pressure sensor is set to the side of opening of the pedestal far from mounting groove, the top Block is set to bottom plate center and extends towards mounting groove opening direction, is equipped in the jacking block and leads with pressure sensor and mounting groove Logical airtube.

2. external tyre pressure meter according to claim 1, it is characterized in that: the jacking block is close to the end of the opening of mounting groove Equipped with the air guide notch radially extended, the air guide notch is connected to airtube.

3. external tyre pressure meter according to claim 1, it is characterized in that: the installation trench bottom and pressure sensor and bottom Gasket is equipped between plate, the pressure sensor and gasket push against, the sealing pushed against with the pressure sensor Pad is equipped with the venthole being connected to airtube, and the gasket and the mounting groove and jacking block for being set to the installation trench bottom are close Envelope connection, and its thickness is less than the height of jacking block.

4. external tyre pressure meter according to claim 3 is connected to it is characterized in that: the bottom plate is equipped with the mounting groove Intercommunicating pore, the gasket be silica gel material, positioned at the bottom plate two sides the gasket by be integrally formed.

5. external tyre pressure meter according to claim 1, it is characterized in that: further include antenna, described antenna one end and circuit Plate connection, other end downward bending then crimp circularize and both ends from beginning to end be not attached to.

6. external tyre pressure meter according to claim 1 is electrically connected it is characterized in that: the circuit board is equipped with button cell The negative electrode tab connect, the negative electrode tab are equipped with fixed feet, and the circuit board is equipped with the fixation hole passed through for fixed feet, described solid Foot is determined equipped with bullet card, and the bullet card can be connected to the circuit board backwards after the fixation hole that the fixed feet passes through circuit board The side of negative electrode tab.

7. external tyre pressure meter according to claim 6, it is characterized in that: the negative electrode tab includes plate, on the plate Equipped with the first elastic slice, first elastic slice towards plate close to circuit board side tilt bending, and can the negative electrode tab with it is described Circuit board abuts with the circuit board when fixed and generates elastic deformation.

8. external tyre pressure meter according to claim 7, it is characterized in that: the negative electrode tab is equipped with the second elastic slice, it is described Negative electrode tab is equipped with the accepting hole passed through for the second elastic slice, and first elastic slice is set in accepting hole and interlocks with the second elastic slice Setting, when second elastic slice is connect far from negative electrode tab described in the inclination bending of circuit board side with button cell towards negative electrode tab, institute The second elastic slice is stated to generate flexible deformation and flush with plate.

9. external tyre pressure meter according to claim 8, it is characterized in that: being equipped with pad between the negative electrode tab and circuit board Piece corresponds to accepting hole on the gasket and is equipped with avoid holes for first elastic slice merging and activity deformation.

10. external tyre pressure meter according to claim 1, it is characterized in that: in bottom plate backwards to mounting groove one in the shell Side is equipped with accommodating chamber, and the pressure sensor and antenna are set in accommodating chamber, and accommodating chamber peripheral wall top surface is along casing center Axisymmetrical is provided at least two link blocks, and the link block is extended with briquetting, the connection towards the casing center axis Block, briquetting and shell peripheral wall top surface form clamping part, and the circuit board includes plectane main body, is prolonged on the circumference of the plectane main body Stretching has protrusion, and the briquetting greater than the radius of plectane main body and is less than protrusion restriction circumference at a distance from casing center axis Radius, the protrusion and clamping part clamping engagement.