CN116803703A - Pressure sensor with framework and manufacturing method - Google Patents
Pressure sensor with framework and manufacturing method Download PDFInfo
- Publication number
- CN116803703A CN116803703A CN202310783696.9A CN202310783696A CN116803703A CN 116803703 A CN116803703 A CN 116803703A CN 202310783696 A CN202310783696 A CN 202310783696A CN 116803703 A CN116803703 A CN 116803703A
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- Prior art keywords
- cavity
- printed board
- framework
- board assembly
- lithium battery
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- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 58
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 58
- 230000006698 induction Effects 0.000 claims abstract description 19
- 230000008878 coupling Effects 0.000 claims abstract description 6
- 238000010168 coupling process Methods 0.000 claims abstract description 6
- 238000005859 coupling reaction Methods 0.000 claims abstract description 6
- 239000003292 glue Substances 0.000 claims description 17
- 238000001746 injection moulding Methods 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 15
- 239000000084 colloidal system Substances 0.000 claims description 13
- 238000002347 injection Methods 0.000 claims description 11
- 239000007924 injection Substances 0.000 claims description 11
- 239000000047 product Substances 0.000 claims description 10
- 238000005476 soldering Methods 0.000 claims description 6
- 238000004806 packaging method and process Methods 0.000 claims description 2
- 239000011265 semifinished product Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 12
- 230000008569 process Effects 0.000 abstract description 11
- 239000000243 solution Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 229910001369 Brass Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
- B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
- B60C23/041—Means for supplying power to the signal- transmitting means on the wheel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
- B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
- B60C23/0418—Sharing hardware components like housing, antenna, receiver or signal transmission line with other vehicle systems like keyless entry or brake control units
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention provides a pressure sensor with a framework and a manufacturing method thereof, belonging to the technical field of automobile parts, and comprising the following steps: the induction module comprises a framework, wherein two cavities which are communicated with each other side by side are arranged in the framework, namely a first cavity and a second cavity, a printed board assembly is arranged in the first cavity, a lithium battery is arranged in the second cavity, and the printed board assembly is electrically connected with the lithium battery; the grounding piece is arranged on the framework, and one end of the grounding piece is electrically connected with the printed board assembly; the inflating valve assembly is connected with the other end of the grounding piece through a fastener. The whole induction module forms a rigid-flexible coupling structure, ensures that the surface of the pressure sensor has certain elasticity, can effectively avoid mechanical damage of a product in the disassembly and assembly process, and improves the structural strength and vibration resistance of the product.
Description
Technical Field
The invention belongs to the technical field of automobile parts, and relates to a pressure sensor, in particular to a pressure sensor with a framework and a manufacturing method thereof.
Background
The tire pressure sensor integrates a traditional automobile inflating valve component and is a sensor forcedly installed on the automobile tire of the prior passenger car. The sensor monitors the internal pressure and temperature information of the tire in real time, and feeds back signals to the vehicle-mounted system through wireless transmission, so that low pressure, high pressure and high temperature of the tire can be timely alarmed, traffic accidents caused by tire faults are avoided, and driving safety is effectively guaranteed. The tyre pressure sensor comprises a sensing module for realizing signal monitoring and transmission, and a valve assembly for providing support and a tyre inflation/deflation interface.
However, with respect to the conventional tire pressure sensor, there are the following drawbacks:
firstly, the induction modules in the traditional tire pressure sensor are all of a shell structure, the sealing protection of the battery and printed board assembly in the shell is realized through glue filling or injection molding, the positioning precision of parts is low, the preparation process is complex, and the production efficiency is low;
secondly, due to the existence of the shell structure, damage caused by scraping easily occurs in the process of disassembling and maintaining the product, thereby influencing the performance of the tire pressure sensor;
thirdly, under the running condition of the automobile, the shell of the tire pressure sensor directly bears larger acting force under the combined action of ground excitation and centrifugal acceleration of the wheels, the requirement on the structural strength of the shell is high, and the weak part has cracking failure risk and affects the driving safety;
fourthly, the combination of the shell and the sealant is not firm, the aging is easy, and the tire pressure sensor is invalid due to the fact that the rubber body is loosened easily in the long-time application process.
Disclosure of Invention
The invention aims at solving the problems in the prior art, and provides a pressure sensor which can simplify the production process, ensure the product performance and improve the driving safety.
The aim of the invention can be achieved by the following technical scheme: a framed pressure sensor comprising: the induction module comprises a framework, wherein two cavities which are communicated with each other side by side are arranged in the framework, namely a first cavity and a second cavity, a printed board assembly is arranged in the first cavity, a lithium battery is arranged in the second cavity, and the printed board assembly is electrically connected with the lithium battery; the grounding piece is arranged on the framework, one end of the grounding piece is electrically connected with the printed board assembly, after the printed board assembly and the lithium battery are arranged in the framework, the printed board assembly and the lithium battery are integrally placed in an injection mold for glue injection molding treatment, a rigid-flexible coupling structure formed by crossing a hard framework and a flexible colloid is formed, the printed board assembly and the lithium battery are wrapped through the colloid, and the relative fixation among the framework, the printed board assembly and the lithium battery is completed;
the inflating valve assembly is connected with the other end of the grounding piece through a fastener.
In the pressure sensor with the framework, the framework and the grounding piece are integrally formed through the injection mold, and one end of the grounding piece extends into the junction of the first concave cavity and the second concave cavity and is electrically connected with the printed board assembly in the first concave cavity.
In the pressure sensor with the framework, the framework is in the hollow arrangement, wherein after the printed board assembly and the lithium battery are arranged in the framework, and when the printed board assembly and the lithium battery are integrally placed in an injection mold for glue filling injection molding treatment, the glue can fill the hollow area of the framework, so that the printed board assembly and the lithium battery are integrally wrapped.
In the pressure sensor with the framework, the cavity bottoms of the first concave cavity and the second concave cavity are hollowed, a first supporting plane and a second supporting plane are formed on the cavity bottoms of the first concave cavity and the second concave cavity respectively, a plurality of buckles are arranged along the cavity walls of the first concave cavity and the second concave cavity respectively and are respectively a first buckle and a second buckle, wherein when the printed board component and the lithium battery are placed into the first concave cavity and the second concave cavity respectively, the printed board component and the lithium battery are abutted to the first supporting plane and the second supporting plane respectively through the first buckle and the second buckle.
In the pressure sensor with the framework, the shape of the first concave cavity wall and the shape of the second concave cavity wall respectively correspond to the outline of the printed board assembly and the outline of the lithium battery, so that the gap between the first concave cavity wall and the outline of the printed board assembly and the gap between the second concave cavity wall and the outline of the lithium battery are reduced.
In the pressure sensor with the framework, the first supporting plane is concaved downwards along the thickness direction to form a stepped concave cavity, a first through groove is formed in the cavity bottom of the stepped concave cavity, a sealing gasket is embedded in the stepped concave cavity, a second through groove which is coaxially arranged with the first through groove is arranged on the sealing gasket, when the printed board assembly is installed in the first concave cavity, the sealing gasket clamps between the framework and the printed board assembly, and a vent hole on a sensitive chip of the printed board assembly is communicated with the first through groove and the second through groove and is coaxially arranged.
The invention also provides a manufacturing method for manufacturing the pressure sensor with the framework, which comprises the following steps:
s1: forming an integral structure of the framework and the grounding piece through an injection molding process;
s2: packaging the sealing gasket, the printed board assembly and the lithium battery into the integrated structure in the step S1;
s3: finishing soldering between the printed board assembly and the lithium battery and between the grounding piece and the printed board assembly to form a semi-finished induction module;
s4: placing the semi-finished product induction module in the step S3 into a die cavity for glue injection molding to form a finished product induction module;
s5: the connection between the finished induction module and the inflating valve assembly is completed through the fastener, so that the pressure sensor with the framework is formed.
Compared with the prior art, the invention has the beneficial effects that:
(1) According to the pressure sensor with the framework, the framework is used as a carrier of the printed board assembly, the lithium battery and the grounding piece, the framework is wrapped in a glue filling mode, the structure is fixed, the whole sensing module forms a rigid-flexible coupling structure, the surface of the pressure sensor is ensured to have certain elasticity, mechanical damage of a product in the disassembling and assembling process can be effectively avoided, and the structural strength and vibration resistance of the product are improved.
(2) The base material of the grounding piece is brass, the surface of the grounding piece is plated with gold so as to improve the conductivity, one end of the grounding piece is inserted into the printed board assembly and is connected in a soldering mode, the other end of the grounding piece is communicated with the inflating valve assembly through a fastener, and the grounding piece is not only an enhanced antenna with a skeleton for wirelessly transmitting signals of the pressure sensor, but also used as a metal gasket to ensure the connection reliability among the sensing module, the inflating valve assembly and the fastener. In addition, the skeleton and the grounding piece are integrally injection molded, so that the assembly process is reduced, and the production efficiency of the product is improved.
(3) The framework is hollowed out, so that the material used for the framework can be reduced, the toughness of the whole framework is guaranteed, the framework is hollowed out, and after the assembly of the printed board assembly and the lithium battery is completed, the glue filled colloid can fully wrap the framework, the printed board assembly and the lithium battery through hollowed-out parts on the framework, so that the connection among the framework, the printed board assembly and the lithium battery is firmer.
(4) The vent hole on the sensitive chip cannot be blocked, so that the reliability of tire pressure monitoring is guaranteed, and the vent hole on the sensitive chip can be guaranteed to be always in a communicated state by arranging the sealing gasket, so that the protection of the vent hole is formed. In addition, set up the air vent on the printing board subassembly, can promote the induction module and carry out the air flow discharge of injection molding in-process, guarantee that the colloid fills the die cavity to increase the cohesion between colloid and the printing board subassembly after the shaping.
(5) The whole process flow can realize full-automatic production, and the process period of the single pressure sensor with the framework is less than 1 minute, so that the production efficiency is improved.
Drawings
FIG. 1 is a schematic view of a pressure sensor with a skeleton according to the present invention.
FIG. 2 is a schematic diagram of a partial structure of a sensing module according to a preferred embodiment of the invention.
FIG. 3 is a schematic diagram showing a partial structure of a sensing module according to a preferred embodiment of the invention.
FIG. 4 is a schematic diagram of a skeleton in a preferred embodiment of the invention.
Fig. 5 is a schematic structural view of a printed board assembly according to a preferred embodiment of the invention.
In the figure, 100, a sensing module; 110. a skeleton; 111. a first cavity; 112. a second cavity; 113. a first support plane; 114. a second support plane; 115. a first buckle; 116. a second buckle; 117. a stepped cavity; 118. a first through groove; 120. a printed board assembly; 121. a sensitive chip; 122. a vent hole; 130. a lithium battery; 140. a grounding plate; 150. a colloid; 160. a sealing gasket; 161. a second through slot; 200. a valve assembly; 300. a fastener.
Detailed Description
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
As shown in fig. 1 to 5, the pressure sensor with a skeleton provided by the present invention includes:
the induction module 100 comprises a framework 110, wherein two cavities which are communicated with each other side by side are arranged in the framework 110, namely a first cavity 111 and a second cavity 112, wherein a printed board assembly 120 is arranged in the first cavity 111, a lithium battery 130 is arranged in the second cavity 112, and the printed board assembly 120 is electrically connected with the lithium battery 130; the grounding piece 140 is mounted on the framework 110, and one end of the grounding piece 140 is electrically connected with the printed board assembly 120, wherein after the printed board assembly 120 and the lithium battery 130 are mounted in the framework 110, the whole body is put into an injection mold to be subjected to glue injection molding treatment, a rigid-flexible coupling structure formed by crossing the hard framework 110 and the flexible colloid 150 is formed, the printed board assembly 120 and the lithium battery 130 are wrapped through the colloid 150, and the relative fixation among the framework 110, the printed board assembly 120 and the lithium battery 130 is completed;
the valve assembly 200 is connected to the other end of the ground lug 140 by a fastener 300.
According to the pressure sensor with the framework, the framework 110 is used as a carrier of the printed board assembly 120, the lithium battery 130 and the grounding piece 140, the framework 110 is wrapped in a glue filling mode, the structure is fixed, the whole sensing module 100 forms a rigid-flexible coupling structure, the surface of the pressure sensor is ensured to have certain elasticity, mechanical damage of a product in the disassembling and assembling process can be effectively avoided, and the structural strength and vibration resistance of the product are improved.
Further, the frame 110 and the grounding plate 140 are integrally formed by an injection mold, and one end of the grounding plate 140 extends into the junction between the first cavity 111 and the second cavity 112 and is electrically connected with the printed board assembly 120 in the first cavity 111.
It should be noted that, in this embodiment, the substrate of the grounding plate 140 is brass, the surface is plated with gold to improve the conductivity, and one end of the grounding plate 140 is inserted into the printed board assembly 120 and connected by soldering, and the other end of the grounding plate 140 is conducted with the valve assembly 200 by the fastener 300, wherein the grounding plate 140 is not only an enhanced antenna for wireless signal transmission of the pressure sensor with a framework, but also serves as a metal gasket to ensure the connection reliability among the sensing module 100, the valve assembly 200 and the fastener 300. In addition, the skeleton 110 and the grounding plate 140 are integrally injection molded, so that the assembly process is reduced, and the production efficiency of the product is improved.
Further, the skeleton 110 is in a hollowed-out arrangement, wherein when the printed board assembly 120 and the lithium battery 130 are installed in the skeleton 110 and are integrally placed in an injection mold for glue injection molding, the glue 150 can fill the hollowed-out area of the skeleton 110, so that the printed board assembly 120 and the lithium battery 130 are integrally wrapped.
In this embodiment, the skeleton 110 is hollowed out, so that on one hand, the material used for the skeleton 110 can be reduced, and the toughness of the whole skeleton 110 is ensured, and on the other hand, the hollowed out skeleton 110 is hollowed out, after the assembly of the printed board assembly 120 and the lithium battery 130 is completed, the glue-filled colloid 150 can fully wrap the skeleton 110, the printed board assembly 120 and the lithium battery 130 through hollowed-out parts on the skeleton 110, so that the connection among the skeleton 110, the printed board assembly 120 and the lithium battery 130 is firmer.
Preferably, the bottoms of the first cavity 111 and the second cavity 112 are hollowed, a first supporting plane 113 and a second supporting plane 114 are respectively formed on the bottoms of the first cavity 111 and the second cavity 112, and a plurality of buckles, namely a first buckle 115 and a second buckle 116, are respectively arranged along the cavity walls of the first cavity 111 and the second cavity 112, wherein when the printed board assembly 120 and the lithium battery 130 are respectively placed in the first cavity 111 and the second cavity 112, the printed board assembly 120 and the lithium battery 130 are respectively abutted against the first supporting plane 113 and the second supporting plane 114 through the first buckle 115 and the second buckle 116, so that the degree of freedom of the printed board assembly 120 and the lithium battery 130 in the first cavity 111 and the second cavity 112 is limited.
It should be noted that the shape of the cavity wall of the first cavity 111 and the shape of the cavity wall of the second cavity 112 respectively correspond to the outline of the printed board assembly 120 and the outline of the lithium battery 130, so that the gap between the cavity wall of the first cavity 111 and the outline of the printed board assembly 120 and the gap between the cavity wall of the second cavity 112 and the outline of the lithium battery 130 are reduced, the whole induction module 100 is more compact in structure, and the electrical connection between the printed board assembly 120 and the lithium battery 130 is more reliable.
In addition, the printed board assembly 120 is connected with the lithium battery 130 through lap joint soldering, and the lithium battery 130 supplies power for the printed board assembly 120, wherein, through selecting a proper model of the lithium battery 130, the nylon hook reduces the overall power consumption of the printed board assembly 120, and the service life of the pressure sensor with the framework is prolonged.
Preferably, the first supporting plane 113 is concave downwards along the thickness direction to form a step-shaped concave cavity 117, a first through groove 118 is arranged at the cavity bottom of the step-shaped concave cavity 117, and a sealing gasket 160 is embedded in the step-shaped concave cavity 117, wherein a second through groove 161 which is coaxial with the first through groove 118 is arranged on the sealing gasket 160, when the printed board assembly 120 is installed in the first concave cavity 111, the sealing gasket 160 clamps between the framework 110 and the printed board assembly 120, and the vent holes 122 on the sensitive chip 121 of the printed board assembly 120 are communicated with the first through groove 118 and the second through groove 161 and are coaxially arranged.
It should be noted that the vent hole 122 on the sensitive chip 121 should not be blocked, so as to ensure the reliability of tire pressure monitoring, and by providing the sealing pad 160, the vent hole 122 on the sensitive chip 121 can be ensured to be always in a communication state, so as to form protection for the vent hole 122. In addition, the ventilation holes 122 are formed in the printed board assembly 120, so that air flowing and discharging of the sensing module 100 in the injection molding process can be promoted, the colloid 150 is ensured to fill the cavity, and the binding force between the colloid 150 and the printed board assembly 120 is increased after molding.
The invention also provides a manufacturing method for manufacturing the pressure sensor with the framework, which comprises the following steps:
s1: forming an integral structure of the skeleton 110 and the grounding plate 140 through an injection molding process;
s2: packing the gasket 160, the printed board assembly 120, and the lithium battery 130 into the integrated structure of step S1;
s3: completing soldering between the printed board assembly 120 and the lithium battery 130 and between the grounding piece 140 and the printed board assembly 120 to form a semi-finished induction module 100;
s4: placing the semi-finished induction module 100 in the step S3 into a mold cavity for glue injection molding to form a finished induction module 100;
s5: the connection between the finished sensing module 100 and the valve assembly 200 is accomplished by fasteners 300 to form a framed pressure sensor.
The manufacturing method for manufacturing the pressure sensor with the framework provided by the invention has the advantages that the whole process flow can realize full-automatic production, and the process period of a single pressure sensor with the framework is less than 1 minute, so that the production efficiency is improved.
It should be noted that the description of the present invention as it relates to "first", "second", "a", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. The terms "coupled," "secured," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally formed, for example; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, the technical solutions of the embodiments of the present invention may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present invention.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (7)
1. A framed pressure sensor comprising:
the induction module comprises a framework, wherein two cavities which are communicated with each other side by side are arranged in the framework, namely a first cavity and a second cavity, a printed board assembly is arranged in the first cavity, a lithium battery is arranged in the second cavity, and the printed board assembly is electrically connected with the lithium battery; the grounding piece is arranged on the framework, one end of the grounding piece is electrically connected with the printed board assembly, after the printed board assembly and the lithium battery are arranged in the framework, the printed board assembly and the lithium battery are integrally placed in an injection mold for glue injection molding treatment, a rigid-flexible coupling structure formed by crossing a hard framework and a flexible colloid is formed, the printed board assembly and the lithium battery are wrapped through the colloid, and the relative fixation among the framework, the printed board assembly and the lithium battery is completed;
the inflating valve assembly is connected with the other end of the grounding piece through a fastener.
2. The pressure sensor with the framework of claim 1, wherein the framework and the grounding plate are integrally formed through an injection mold, and one end of the grounding plate extends into the junction of the first concave cavity and the second concave cavity and is electrically connected with the printed board assembly in the first concave cavity.
3. The pressure sensor with the framework of claim 1, wherein the framework is in a hollowed-out arrangement, and when the printed board assembly and the lithium battery are put into the framework and are integrally put into an injection mold for glue filling injection molding, the glue can fill the hollowed-out area of the framework, so that the printed board assembly and the lithium battery are integrally wrapped.
4. The pressure sensor with the framework of claim 3, wherein the cavity bottoms of the first cavity and the second cavity are hollowed, a first supporting plane and a second supporting plane are respectively formed on the cavity bottoms of the first cavity and the second cavity, a plurality of buckles are respectively arranged along the cavity walls of the first cavity and the second cavity, and are respectively a first buckle and a second buckle, wherein when the printed board assembly and the lithium battery are respectively placed into the first cavity and the second cavity, the printed board assembly and the lithium battery are respectively abutted to the first supporting plane and the second supporting plane through the first buckle and the second buckle.
5. A framed pressure sensor as claimed in claim 3, wherein the shape of the first cavity wall and the shape of the second cavity wall correspond to the profile of the printed board assembly and the profile of the lithium battery, respectively, and wherein the gap between the first cavity wall and the profile of the printed board assembly and the gap between the second cavity wall and the profile of the lithium battery is reduced.
6. The pressure sensor with a framework according to claim 1, wherein the first supporting plane is concave downwards along the thickness direction to form a stepped concave cavity, a first through groove is formed in the cavity bottom of the stepped concave cavity, a sealing gasket is embedded in the stepped concave cavity, a second through groove which is coaxially arranged with the first through groove is formed in the sealing gasket, when the printed board assembly is installed in the first concave cavity, the sealing gasket clamps between the framework and the printed board assembly, and a vent hole on a sensitive chip of the printed board assembly is communicated with the first through groove and the second through groove and is coaxially arranged.
7. A method of manufacturing the framed pressure sensor of any of claims 1 through 6, comprising the steps of:
s1: forming an integral structure of the framework and the grounding piece through an injection molding process;
s2: packaging the sealing gasket, the printed board assembly and the lithium battery into the integrated structure in the step S1;
s3: finishing soldering between the printed board assembly and the lithium battery and between the grounding piece and the printed board assembly to form a semi-finished induction module;
s4: placing the semi-finished product induction module in the step S3 into a die cavity for glue injection molding to form a finished product induction module;
s5: the connection between the finished induction module and the inflating valve assembly is completed through the fastener, so that the pressure sensor with the framework is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310783696.9A CN116803703A (en) | 2023-06-29 | 2023-06-29 | Pressure sensor with framework and manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310783696.9A CN116803703A (en) | 2023-06-29 | 2023-06-29 | Pressure sensor with framework and manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116803703A true CN116803703A (en) | 2023-09-26 |
Family
ID=88080602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310783696.9A Pending CN116803703A (en) | 2023-06-29 | 2023-06-29 | Pressure sensor with framework and manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116803703A (en) |
-
2023
- 2023-06-29 CN CN202310783696.9A patent/CN116803703A/en active Pending
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