CN107097597B

CN107097597B - Built-in adhesive sensor assembly

Info

Publication number: CN107097597B
Application number: CN201710456554.6A
Authority: CN
Inventors: 吴明; 曾小山
Original assignee: Shenzhen Carmate Electronic Technology Co ltd
Current assignee: Shenzhen Carmate Electronic Technology Co ltd
Priority date: 2017-06-16
Filing date: 2017-06-16
Publication date: 2023-01-24
Anticipated expiration: 2037-06-16
Also published as: CN107097597A

Abstract

The invention discloses a built-in adhesive sensor assembly which comprises a shell, a bottom cover, a PCB (printed Circuit Board) assembly, a sensor transmitting antenna spring, a battery and a rubber sleeve, wherein the shell is of a semi-open accommodating cavity structure with a multi-layer ladder-shaped structure, the shell and the bottom cover are covered together and form a closed cavity in a surrounding mode, an inner groove of the rubber sleeve is sleeved with a step at the bottom of the sensor shell, and the bottom surface of the rubber sleeve is fixedly adhered to the inner wall of a tire through an adhesive. When pasting through the rubber sleeve at the tire inner wall, only need scribble tire glue on the bottom surface of rubber sleeve and can the snap-on the tire inner wall, perhaps cross 3M double faced adhesive tape and directly paste on wheel hub at sensor drain pan surface energy, do not worry by centrifugal force get rid of the problem that drops, and when needs change the tire, only need to change the rubber sleeve can, easy operation, sensor subassembly can repetitious usage, long service life.

Description

Built-in paste type sensor assembly

Technical Field

The invention relates to the technical field of tire pressure monitoring, in particular to a sticking type sensor assembly with built-in tire pressure.

Background

The built-in tire pressure sensor is mainly used for detecting the internal air pressure or temperature of a tire so as to monitor the condition of the tire at any time, the built-in tire pressure monitoring devices in the prior art are provided with inflating valves, the existing market mainstream built-in tire pressure sensors are provided with inflating valves, and the inflating valves on original vehicle hubs are required to be detached during installation so as to install the built-in tire pressure sensor; and the truck is also provided with a binding type built-in tire pressure sensor, the binding belt or the steel belt is used for installation and fixation, the operation is troublesome, the tightness of the binding belt cannot be controlled by the binding belt, and the tire pressure sensor is easy to fall off.

Disclosure of Invention

Aiming at the defects in the technology, the invention provides the built-in adhesive sensor assembly, the shell and the bottom cover of the sensor are fixed together, the outer layer is sleeved with the detachable rubber sleeve, the rubber sleeve is directly arranged on the inner wall of the tire by coating tire glue on the smooth surface of the rubber sleeve, or the bottom cover is directly adhered to the hub by 3M glue, the mounting mode is simple and convenient, and the sensor assembly can be used for multiple times.

In order to achieve the purpose, the invention discloses a built-in adhesive type sensor assembly which comprises a shell, a bottom cover, a PCB assembly, a sensor transmitting antenna spring and a button type battery, wherein the shell is of a semi-open containing cavity structure with a multi-layer ladder-shaped structure, the shell and the bottom cover are covered together and enclose into a closed cavity, the PCB assembly, the battery and the sensor transmitting antenna spring are respectively contained in the closed cavity, the PCB assembly is electrically connected with the battery, the sensor transmitting antenna spring is electrically connected with the PCB assembly, the shell is provided with an air inlet, the air inlet is communicated with a main control element of the PCB assembly, the main control element detects an air pressure value and a temperature value in a tire, and the surface of the bottom cover is fixedly adhered to a hub through double faced adhesive tape.

Wherein, still include a rubber sleeve, the rubber sleeve cover is on the shell to with the bottom pressure in the rubber sleeve, the rubber sleeve passes through tire glue and pastes on the tire inner wall, and the rubber sleeve inner groovy establishes the shell through shell bottom step cover, the another side of rubber sleeve is the smooth surface, and the smooth surface of rubber sleeve passes through fixed the pasting on the tire inner wall of tire glue.

The shell is provided with a groove at the opening end, a convex block which is in adaptive connection with the groove is arranged at the position where the bottom cover is in contact with the opening end of the shell, the groove is in adaptive connection with the convex block to form a closed cavity, and the contact position of the shell and the bottom cover is welded together through ultrasonic waves.

One side of the PCB assembly is fixedly connected with the top end of the inner wall of the shell through a double-sided adhesive tape, the other side of the PCB assembly is welded with a battery, and the PCB is connected with the convex column on the bottom cover; the battery and the PCB assembly are clamped by the bottom cover and the shell.

Wherein, the shell is inside to be provided with two-layer step, and the first step width that is close to opening one end is greater than the second step width of inlayer, the edge of PCB board subassembly supports to lean on the contact with the step wall that first step and second step formed, and PCB board subassembly passes through the double faced adhesive tape and is connected fixedly with step wall and shell.

The PCB board clamping device comprises a bottom cover, a PCB board assembly and a plurality of convex columns, wherein the bottom cover is provided with the plurality of convex columns, the top ends of the plurality of convex columns are abutted to the PCB board assembly and used for fixing the PCB board assembly, and the PCB board is just clamped and fixed between the bottom cover and the PCB board assembly.

And a triangular reinforcing rib block is arranged at the position where the convex column is contacted with the PCB assembly, one end of the reinforcing rib block, which is close to the bottom cover, is wide, and the other end of the reinforcing rib block, which extends upwards, is narrow.

Wherein, be provided with a hollow groove on the PCB board subassembly, sensor transmitting antenna spring sets up in the top of hollow groove, and the extension section of sensor transmitting antenna spring one end is "nearly" style of calligraphy, is provided with the through-hole that is used for welding this extension section on the PCB board subassembly, and the extension section is connected through inserting the through-hole welding and with the main control component electricity on the PCB board subassembly.

The shell is further provided with a third step which is located at the opening end of the shell, the width of the third step is larger than that of the second step, the third step is fixedly connected with the bottom cover, the third step on the shell is sleeved in the inner groove of the rubber sleeve, and the shell of the sensor is fixed with the rubber sleeve.

The top end of the outer side of the shell is also provided with a lug which is convenient to hold and disassemble, and the air inlet is arranged in the lug; and the air inlet adopts a trapezoidal step shape.

The invention has the beneficial effects that:

compared with the prior art, the built-in adhesive sensor assembly disclosed by the invention has a simple internal structure, the whole adhesive sensor can be sleeved with the rubber sleeve, when the adhesive sensor needs to be adhered, the rubber sleeve can be fixed on a hub only by adhering double-sided adhesive to the bottom cover on the sensor assembly, or the rubber sleeve is directly fixed on the inner wall of a tire by coating automobile tire glue on the rubber sleeve, so that the problem that the rubber sleeve is thrown off and falls off by centrifugal force is avoided, when the tire needs to be replaced, only the bottom cover needs to be directly detached or the rubber sleeve needs to be replaced, the operation is simple, the sensor assembly can be used for multiple times, the service life is long, the outer shell and the bottom cover do not need to be fixed by screws, and the inside does not need to be filled with adhesive; but through ultrasonic bonding, production efficiency is fast, low in production cost, and the outward appearance is neat and artistic. The whole built-in sticking type sensor component is not provided with air valves, and four air valves are saved, so that the built-in tire pressure sensing device has fewer parts and more cost-saving compared with the built-in tire pressure sensing device in the prior art.

Drawings

FIG. 1 is a diagram of a sensor assembly according to an embodiment of the present invention;

FIG. 2 is an exploded view of a sensor assembly according to an embodiment of the present invention;

FIG. 3 is an assembled cross-sectional view of a sensor assembly of an embodiment of the present invention;

FIG. 4 is a second cross-sectional view of a sensor assembly in accordance with an embodiment of the present invention;

FIG. 5 is a schematic diagram of a housing according to an embodiment of the present invention;

FIG. 6 is a schematic view of a bottom cover structure according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a PCB assembly according to an embodiment of the invention;

fig. 8 is a schematic diagram of a spring structure of a sensor transmitting antenna according to an embodiment of the present invention.

Description of main elements:

1. outer shell 2, bottom cover

3. PCB (printed circuit board) assembly 4 and sensor transmitting antenna spring

5. Battery 6 and rubber sleeve

7. First 3M double faced adhesive tape 8 and second 3M double faced adhesive tape

11. Third step 12, first step

13. Second step 21, second bump

22. Convex column 31 and accommodating groove

32. Master control element 33, through-hole

34. Battery welding position

41. Extension section 61, snap edge

111. Groove 131 and first bump

132. Air inlet 221, reinforcing rib piece.

Detailed Description

In order to more clearly describe the present invention, the present invention will be further described with reference to the accompanying drawings.

Referring to fig. 1 to 4, the invention discloses a built-in adhesive sensor assembly, which comprises a shell 1, a bottom cover 2, a PCB assembly 3, a sensor transmitting antenna spring 4, a button cell 5 and a rubber sleeve 6, wherein the shell 1 is of a semi-open containing cavity structure with a multi-layer ladder-shaped structure arranged inside, the shell 1 and the bottom cover 2 are covered together and form a closed cavity, the PCB assembly 3, the battery 5 and the sensor transmitting antenna spring 4 are respectively contained in the closed cavity, the PCB assembly 3 is electrically connected with the battery 5, the sensor transmitting antenna spring 4 is electrically connected with the PCB assembly 3, the shell 1 and the bottom cover 2 are welded together through ultrasonic waves, the rubber sleeve 6 is sleeved on the sensor shell 1 through a third step 11 of the shell 1, and the rubber sleeve 6 is fixedly adhered to the inner wall of a tire through tire glue. But the invention can also not need the rubber sleeve 6, but can be directly stuck on the hub by using double-sided adhesive tape on the outer surface of the bottom cover 2. When the rubber sleeve 6 is stuck on the inner wall of a tire, the smooth surface of the bottom of the rubber sleeve 6 is usually coated with tire glue, and when the rubber sleeve is fixedly stuck on the inner wall of the tire, the deformation condition and the load of the tire can be detected. The double-sided adhesive tape used when being stuck on the hub through the bottom cover 2 is a 3M double-sided adhesive tape.

In this embodiment, an air inlet 132 is further disposed on the housing 1, the air inlet 132 is communicated with the PCB board assembly 3, and the main control element 32 on the PCB board assembly 3 detects values of air pressure and temperature, so as to detect the environment in the tire.

Compared with the prior art, the tire pressure and tire temperature detection device is characterized in that the built-in sensor assembly is not provided with an inflating valve, the inflating valve is not required to be fixed on a wheel hub, or the sensor assembly is adhered to the inner wall of a tire or the wheel hub, the air pressure and temperature change of an air inlet is detected through the detection part on the main control element, the sensor and the control circuit are arranged on the PCB assembly, and the tire pressure and the tire temperature are detected through detecting the rotating air pressure change and temperature change of the tire. In the invention, the whole air valve is omitted, one accessory is omitted in the production process, the production cost is greatly reduced, and the production steps are reduced. The sensor assembly of this method easy operation, during the installation, only need in the middle of the tire inner wall baseplane clean up one with the rubber sleeve size unanimous region come out can, the tire glue can directly paste whole sensor assembly on the tire inner wall on the picture is sheathe in to smooth rubber, owing to be attached on the inner wall of tire, or sensor assembly's bottom 2 directly pastes on wheel hub through 3M double faced adhesive tape, centrifugal force is unanimous with the sensor pastes the bearing force direction, do not worry firmly that sensor assembly can get rid of because of centrifugal force. Similarly, compared with a mode of fixing the sensor assembly in a binding mode, the whole tire does not need to be disassembled, bound by a binding belt or a steel belt, and the degree of tightness of binding is not needed.

Specifically, the working principle of the invention is as follows: the built-in sticking type sensor assembly is stuck on the inner wall of a tire or a hub, when an automobile moves, the air pressure and the temperature in the tire can change, air enters through the air inlet 132, the air pressure and the temperature are detected through the main control element 32 on the PCB assembly 3, and therefore the environment in the tire pressure is detected, meanwhile, if the built-in sticking type sensor assembly is stuck on the inner wall of the tire, the main control element 32 can estimate the load of the whole automobile through the deformation generated after the tire rotates.

Referring to fig. 4 and 5, in the present embodiment, a three-step structure is disposed inside the housing 1, which includes a third step 11 located at the opening end of the housing 1, a first step 12 connecting the third step 11 and the second step 13, the third step 11 is wider than the first step 12, the first step 12 is wider than the second step 11, the third step 11 is located at the opening end, the second step 11 is located at the uppermost top end, and a first protrusion 131 convenient for holding and detaching is further disposed outside the second step 11. In this embodiment, a groove 111 is provided at a position where the inside of the open end of the third step 11 contacts the bottom cover 7, a second protrusion 21 is provided on the bottom cover 2, the second protrusion 21 is connected and fixed with the groove 111, and the outside of the connection between the second protrusion 21 and the groove 111 is further welded by ultrasonic, so as to form a closed cavity. Adopt the fixed shell of ultrasonic bonding mode 1 and bottom 2 in this embodiment, it is sealed than prior art's adoption encapsulating mode, it is more simple and convenient to operate, and ultrasonic bonding is fast, and does not have cooling, cleaning process, and sealing surface is cleaner, level and smooth and pleasing to the eye, and production efficiency is fast, and need not the additive, and manufacturing cost is lower.

In this embodiment, after the third step 11 is connected to the second bump 21, one side of the rubber sleeve 6 having the fastening edge 61 sequentially passes through one side of the bottom cover 2 to continuously cover the third step 11 on the housing 1, and the housing 1 and the bottom cover 2 are pressed and fixed together. When rubber sleeve 6 is dismantled to needs, only need to pull out rubber sleeve 6 in the opposite direction can, because the other one side of rubber sleeve 6 is glossy one side, after pasting things such as tire glue are scribbled to firm smooth one side, can install on the tire inner wall, the mounting means is simple and convenient, more importantly, when needs change tire, only need to change the rubber sleeve, fix sensor assembly and can continue to use again on new tire, and the operation is simple, can repetitious usage, long service life, more user's saving use cost.

In this embodiment, one side of the PCB board assembly 3 is fixed to the inner wall of the top end of the second step 12 of the housing 1 through the first 3M double-sided tape 7, the other end of the PCB board assembly 3 is welded to the battery 5, the other end of the battery 5 is welded to the bottom cover 2 through the battery welding position 34 on the PCB board assembly 3, and the battery 5 and the PCB board assembly 3 are clamped by the bottom cover 2 and the housing 1. In this embodiment, the edge of the PCB board assembly 3 is in abutting contact with the step wall formed by the first step 12 and the second step 13, and the PCB board assembly 3 is connected and fixed with the step wall and the housing 1 by the second 3M double-sided adhesive 8, in this embodiment, the PCB board assembly 3 is fixed inside the housing 1 by the first 3M double-sided adhesive and the second 3M double-sided adhesive, and the battery 5 is clamped between the PCB board assembly 3 and the bottom cover 2, and the PCB assembly 3 is electrically connected with the battery 5. Referring to fig. 6, a plurality of protruding columns 22 are disposed on the bottom cover 2, in this embodiment, three protruding columns 22 are disposed, the upper ends of the protruding columns 22 clamp the PCB board assembly 3 therein for fixing, and a triangular reinforcing rib block 221 is disposed at a position of the protruding columns 22 connected to the bottom cover 2, one end of the reinforcing rib block 221 close to the bottom cover 2 is wide, and the other end extending upward is narrow, so that the PCB board assembly 3 is supported and prevented from shaking.

Referring to fig. 7 and 8, in the present embodiment, a receiving slot 31 with a hollow structure is disposed on the PCB assembly 3, the sensor transmitting antenna spring 4 is disposed above the receiving slot 31, a through hole 33 is disposed beside the receiving slot 31, an extending section 41 with a shape of a Chinese character ji is disposed at one end of the sensor transmitting antenna spring 4, the extending section 41 with a shape of a Chinese character ji is welded after passing through the through hole 33, so as to be fixed on the PCB assembly 3, and the sensor transmitting antenna spring 4 is electrically connected to the main control element 32.

The invention has the advantages that:

1) The whole sticking type sensor is directly or through the rubber sleeve stuck on the wheel hub or the inner wall of the tire, when the sticking is needed, the whole sticking type sensor can be directly fixed on the inner wall of the tire only by coating automobile tire glue on the rubber sleeve, or the bottom cover is directly stuck on the wheel hub through the 3M double-sided adhesive, the problem that the bottom cover is thrown off and falls off by centrifugal force is not needed to be worried, and when the wheel hub needs to be replaced, only the rubber sleeve needs to be replaced, the operation is simple, the sensor can be used for multiple times, and the service life is long;

2) The shell and the bottom cover are not fixed in a glue pouring mode but welded through ultrasonic waves, so that the production efficiency is high, the production cost is low, and the appearance is neat and attractive;

3) The whole built-in adhesive type sensor assembly is not provided with air valves, and four air valves are saved, so that the built-in tire pressure sensing device has fewer parts and is more cost-saving compared with the built-in tire pressure sensing device in the prior art.

The above disclosure is only for a few specific embodiments of the present invention, but the present invention is not limited thereto, and any variations that can be considered by those skilled in the art are intended to fall within the scope of the present invention.

Claims

1. A built-in adhesive sensor assembly is characterized by comprising a shell, a bottom cover, a PCB (printed circuit board) assembly, a sensor transmitting antenna spring and a button-type battery, wherein the shell is of a half-opening containing cavity structure with a multilayer step-shaped structure, the shell and the bottom cover are covered together and form a closed cavity in a surrounding mode, the PCB assembly, the battery and the sensor transmitting antenna spring are respectively contained in the closed cavity, the PCB assembly is electrically connected with the battery, the sensor transmitting antenna spring is electrically connected with the PCB assembly, an air inlet is formed in the shell and is communicated with a main control element of the PCB assembly, and the main control element detects an air pressure value and a temperature value in a tire;

the rubber sleeve is sleeved on the shell, the bottom cover is pressed in the rubber sleeve, the rubber sleeve is adhered to the inner wall of the tire through tire glue, the inner groove of the rubber sleeve is sleeved on the shell through a step at the bottom of the shell, the other side of the rubber sleeve is a smooth surface, and the smooth surface of the rubber sleeve is fixedly adhered to the inner wall of the tire through the tire glue;

one side of the PCB assembly is fixedly connected with the top end of the inner wall of the shell through a double-faced adhesive tape, the other side of the PCB assembly is welded with a battery, and the PCB assembly is connected with the convex column on the bottom cover; the battery and the PCB assembly are clamped by the bottom cover and the shell.

2. The built-in adhesive sensor assembly according to claim 1, wherein the open end of the housing is provided with a groove, the contact position of the bottom cover and the open end of the housing is provided with a projection which is adapted to be connected with the groove, the groove and the projection are adapted to be connected to form a closed cavity, and the contact position of the housing and the bottom cover is welded together by ultrasonic wave.

3. The built-in adhesive sensor assembly according to claim 1, wherein two layers of steps are arranged in the housing, the width of a first step close to one end of the opening is larger than the width of a second step of the inner layer, the edge of the PCB board assembly is in abutting contact with a step wall formed by the first step and the second step, and the PCB board assembly is fixedly connected with the step wall and the housing through double-sided adhesive tapes.

4. The built-in paste type sensor assembly according to claim 1, wherein the bottom cover is provided with a plurality of protruding pillars, and top ends of the plurality of protruding pillars abut against the PCB assembly and fix the PCB assembly.

5. The internal paste sensor assembly according to claim 4, wherein a triangular reinforcing rib is provided at a position where the boss is connected to the bottom cover, and the reinforcing rib is wide at an end close to the bottom cover and narrow at an upwardly extending end.

6. The built-in adhesive sensor assembly according to claim 1, wherein the PCB assembly is provided with a hollow groove, the sensor transmitting antenna spring is disposed above the hollow groove, an extension section at one end of the sensor transmitting antenna spring is shaped like a Chinese character ji, the PCB assembly is provided with a through hole for welding the extension section, and the extension section is welded on the PCB assembly by inserting the through hole and is electrically connected with the main control element on the PCB assembly.

7. The built-in adhesive sensor assembly according to claim 1, wherein the top end of the outer side of the housing is further provided with a protruding block for convenient hand holding and detachment, and the air inlet is arranged in the protruding block; and the air inlet is internally provided with a trapezoidal step shape.