TWI776464B - Tire pressure monitoring device - Google Patents

Abstract

A tire pressure monitoring device adapted to be fixed on a wheel frame is provided. The wheel frame has an inner annular wall, an outer annular wall and a connecting wall. The connecting wall is connected between the inner annular wall and the outer annular wall. The inner annular wall has a first annular end surface and a second annular end surface opposite to the first annular end surface. The tire pressure monitoring device includes a main body and a fixing element. The main body is adapted to be disposed on the connecting wall and adjacent to the first annular end surface. The fixing element is connected to the main body and extends from the first annular end surface to the second annular end surface to clamp the inner annular wall.

Description

Tire pressure detection device

The present invention relates to a detection device, especially a tire pressure detection device.

Since the condition of tires is closely related to driving safety, many vehicles are currently equipped with a Tire Pressure Monitoring System (TPMS). The above-mentioned tire pressure detection system includes a plurality of tire pressure detection devices to detect the tire pressure of each tire in real time.

Generally speaking, tire pressure detection devices can be roughly divided into two types: inner tire type and outer tire type. The tire pressure detection device outside the tire is directly installed on the valve of the tire, but when the vehicle is driven for a long time, the valve may be at risk of breaking. The tire pressure detection device of the tire type is usually adhered to the wheel frame by a glue, but when the vehicle is driven for a long time, the glue may deteriorate, causing the tire pressure detection device to fall off.

The invention provides a tire pressure detection device to improve the firmness of installation.

The tire pressure detection device provided by the present invention is suitable for being fixed on a wheel frame, and the wheel frame has an inner ring wall, an outer ring wall and a connecting wall. The connecting wall is connected between the inner ring wall and the outer ring wall. The inner annular wall has opposite first annular end surfaces and second annular end surfaces. The tire pressure detection device includes a body and a fixing member. The body is adapted to be disposed on the connecting wall adjacent to the first annular end face. The fixing piece is connected to the body and extends from the first annular end surface to the second annular end surface to be clamped to the inner annular wall.

In an embodiment of the present invention, the above-mentioned fixing member has a connecting portion, a first abutting portion, a second abutting portion, an extending portion and a hook portion. The connecting portion is connected to the side wall of the body. The first abutting portion is connected to the connecting portion and abuts against the first annular end surface. The second abutting portion abuts against the second annular end surface. The extension part is connected between the first abutting part and the second abutting part. The hook portion is connected to a side of the second abutting portion away from the extension portion, and is hooked against the inner ring wall.

In an embodiment of the present invention, the side wall of the above-mentioned body has at least one button hole. The connecting portion extends into the inner side of the side wall and has at least one buckle portion, and the at least one buckle portion is buckled with at least one button hole.

In an embodiment of the present invention, the above-mentioned body abuts against the inner ring wall.

In an embodiment of the present invention, the above-mentioned body includes an inner casing, a sensing module and an outer casing. The inner housing has a side wall, a bottom wall, and an opening opposite the bottom wall, wherein the side wall is connected to the bottom wall. The sensing module is arranged in the inner casing. The sensing module includes an air pressure sensing element. The outer casing and the inner casing are combined with each other. The outer casing has a top wall opposite to the bottom wall, the top wall covers the opening and has a first through hole.

In an embodiment of the present invention, the material of the inner casing includes ABS or PVC, and the material of the outer casing includes silicone.

In an embodiment of the present invention, the above-mentioned body further includes a cover plate covering the opening. The cover plate has a second through hole, and the outer casing covers the cover plate.

In an embodiment of the present invention, the above-mentioned body further includes a sealing layer, which is disposed on the inner casing and covers the sensing module. The sealing layer has a third through hole exposing the sensing module.

In an embodiment of the present invention, the above-mentioned main body further includes a power supply element disposed in the inner casing and electrically connected to the sensing module.

In an embodiment of the present invention, the above-mentioned power supply element includes a battery module, a piezoelectric module or a thermoelectric module.

In an embodiment of the present invention, the above-mentioned sensing module further includes a temperature sensing element.

In an embodiment of the present invention, the above-mentioned main body further includes a wireless signal transceiving element, which is disposed in the inner casing and is electrically connected to the sensing module.

In an embodiment of the present invention, the above-mentioned tire pressure detection device further includes a rubber layer disposed on the main body. The adhesive layer is suitable for adhering the body to the connecting wall.

In an embodiment of the present invention, the connecting wall of the wheel frame has a plurality of ribs, and the body abuts between two adjacent ribs.

Because the tire pressure detection device of the present invention is clamped to the inner ring wall of the wheel frame by the fixing member, wherein the fixing member extends from the first annular end face to the second annular end face of the inner ring wall, so as to be completely clamped to the inner ring wall of the wheel frame. inner ring wall. Therefore, the tire pressure detection device of the present invention can be firmly installed on the wheel frame, thereby improving the safety of driving.

In order to make the above-mentioned and other objects, features and advantages of the present invention more obvious and easy to understand, the following specific embodiments are given and described in detail in conjunction with the accompanying drawings.

100, 100a: tire pressure detection device

110, 110a: Ontology

111, 1141: Sidewalls

112: Inner shell

113: Sensing module

114: outer shell

115: Cover

116: Power supply components

117: Wireless signal transceiver components

118a: Sealing layer

120: Fixing parts

121: Connection part

122: The first contact part

123: Second abutment

124: Extensions

125: Hook

130: Adhesive layer

1120: Bottom wall

1130: Air pressure sensing element

1131: Temperature sensing element

1140: Top Wall

AS1: The first annular end face

AS2: Second annular end face

B: circuit board

CW: connecting wall

E: edge

H: button hole

I: Buckle

IS: inner side

IW: Inner Ring Wall

O: open

OW: Outer Ring Wall

R: Rib

T1, T2, T3: through holes

W: wheel frame

FIG. 1 is a schematic diagram of a tire pressure detection device fixed on a wheel frame according to an embodiment of the present invention.

FIG. 2 is a schematic perspective view of the tire pressure detection device of FIG. 1 .

FIG. 3 is a schematic diagram of the relative positional relationship between the fixing member and the inner ring wall of FIG. 2 .

FIG. 4 is an exploded schematic view of a partial element of the body of FIG. 2 .

FIG. 5 is a schematic cross-sectional view of the body of FIG. 2 .

6 is a schematic cross-sectional view of a body of a tire pressure detection device according to another embodiment of the present invention.

FIG. 1 is a schematic diagram of a tire pressure detection device fixed on a wheel frame according to an embodiment of the present invention. FIG. 2 is a schematic perspective view of the tire pressure detection device of FIG. 1 . Please refer to FIG. 1 and FIG. 2 , the tire pressure detection device 100 is fixed on the wheel frame W. The wheel frame W has an inner ring wall IW, an outer ring wall OW, and a connecting wall CW. The connecting wall CW is connected between the inner ring wall IW and the outer ring wall OW. The inner annular wall IW has opposite first annular end surfaces AS1 and second annular end surfaces AS2. The tire pressure detection device 100 includes a main body 110 and a fixing member 120 . The body 110 is adapted to be disposed on the connecting wall CW, adjacent to the first annular end face AS1. The fixing member 120 is connected to the body 110 and extends from the first annular end surface AS1 to the second annular end surface AS2 to be clamped to the inner annular wall IW. In this embodiment, the tire pressure detection device 100 is, for example, an in-tire tire pressure detection device 100 , but the present invention is not limited thereto.

FIG. 3 is a schematic diagram of the relative positional relationship between the fixing member and the inner ring wall of FIG. 2 . Referring to FIGS. 2 and 3 , the fixing member 120 may have a connecting portion 121 , a first abutting portion 122 , a second abutting portion 123 , an extending portion 124 and a hook portion 125 . The connecting portion 121 is connected to the side wall 111 of the main body 110 . The first abutting portion 122 is connected to the connecting portion 121 and abuts against the first annular end surface AS1. The second abutting portion 123 abuts against the second annular end surface AS2. The extending portion 124 is connected between the first abutting portion 122 and the second abutting portion 123 and can abut against the inner side surface IS of the inner ring wall IW (also shown in FIG. 1 ). The hook portion 125 is connected to a side of the second abutting portion 123 away from the extending portion 124 and is hooked against the inner ring wall IW. To be more specific, the hook portion 125 of this embodiment is, for example, hooked against the edge E of the second annular end surface AS2 (also shown in FIG. 1 ), but the invention is not limited thereto. In addition, the sizes of the first abutting portion 122 , the second abutting portion 123 , the extending portion 124 and the hook portion 125 can be adjusted according to the size of the inner ring wall IW of the wheel frame W, so that the fixing member 120 can be firmly clamped on the inner ring wall IW of the wheel frame W. In this embodiment, the material of the fixing member 120 may include metal, but is not limited thereto.

FIG. 4 is an exploded schematic view of a partial element of the body of FIG. 2 . 2, 3 and 4, the side wall 111 of the main body 110 may have at least one button hole H, and the connecting portion 121 extends into the inner side of the side wall 111 and may have at least one button portion I corresponding to the aforementioned at least one button hole H. Specifically, the body 110 includes, for example, For the inner casing 112 and the outer casing 114 , the aforementioned side wall 111 is, for example, the side wall of the inner casing 112 . In this embodiment, the side wall 111 has three button holes H and the connecting portion 121 has three button portions I as an example, but the number is not limited thereto. The buckle portions I are respectively buckled in the button holes H, so that the fixing member 120 can be fixed on the side wall 111 of the main body 110 .

Please refer to FIG. 1 and FIG. 2 again, the main body 110 of this embodiment can abut against the inner ring wall IW. Specifically, the side of the main body 110 connected to the fixing member 120 can abut against the inner ring wall IW, and clamp the inner ring wall IW together with the first abutting portion 122 and the extending portion 124 of the fixing member 120 for further lifting The installation firmness of the tire pressure detection device 100 . On the other hand, the shape of the body 110 can be adjusted according to the detailed structure of the wheel frame W. For example, in this embodiment, the connecting wall CW of the wheel frame W may have a plurality of ribs R, and the body 110 may abut between two adjacent ribs R. Specifically, opposite ends of the main body 110 abut against two adjacent ribs R of the wheel frame W to fix the position of the tire pressure detection device 100 on the connecting wall CW. In this way, the tire pressure detection device 100 can be prevented from being displaced on the connecting wall CW when the wheel frame W rotates at a high speed.

FIG. 5 is a schematic cross-sectional view of the body of FIG. 2 . Please refer to FIG. 4 and FIG. 5 , in addition to the above-mentioned inner casing 112 and outer casing 114 , the main body 110 may further include a sensing module 113 . In addition to the aforementioned side wall 111 , the inner casing 112 may further have a bottom wall 1120 and an opening O opposite to the bottom wall 1120 , wherein the side wall 111 is connected to the bottom wall 1120 . The sensing module 113 is disposed in the inner casing 112 and includes an air pressure sensing element 1130 to detect the air pressure in the inner casing 112 . The outer casing 114 and the inner casing 112 are combined with each other, and the outer casing 114 has a top wall 1140 opposite to the bottom wall 1120 . The top wall 1140 covers the opening O and has a through hole T1 (drawn in FIG. 4 , the first through hole). Specifically, the through hole T1 communicates with the inner space of the inner casing 112 so that the air pressure sensing element 1130 can detect the tire pressure.

In this embodiment, the body 110 may further include a cover plate 115 covering the opening O. The cover plate 115 has a through hole T2 (second through hole), and the outer casing 114 covers the cover plate 115 . Specifically, the cover plate 115 can further seal the interior of the inner casing 112, thereby protecting the electronic components located in the inner casing 112, For example, the sensing module 113 . Similarly, the through hole T2 of the cover plate 115 communicates with the inner space of the inner casing 112 and the through hole T1 of the outer casing 114, so that the air pressure sensing element 1130 can detect the tire pressure.

Incidentally, the outer casing 114 may have a side wall 1141 connected to the top wall 1140 , and the side wall 1141 of the outer casing 114 may overlap the side wall 111 of the inner casing 112 to enhance the structural strength of the main body 110 . In this embodiment, the material of the inner casing 112 and the material of the outer casing 114 are, for example, non-metallic materials. For example, the material of the inner casing 112 may include Acrylonitrile Butadiene Styrene (ABS) or Polybutadiene Carbonate (PBC), and the material of the outer casing 114 may be Including silicone (Silicone), but not limited to this.

In addition to the air pressure sensing element 1130 , the sensing module 113 of this embodiment may further include a temperature sensing element 1131 . The temperature sensing element 1131 can detect the temperature of the gas in the tire to provide more information about the tire. The body 110 further includes a circuit board B, for example, and the air pressure sensing element 1130 and the temperature sensing element 1131 are disposed on the circuit board B, for example. It can be understood that, in order to supply power to the sensing module 113 , the body 110 may further include a power supply element 116 . The power supply element 116 is disposed in the inner casing 112 and is electrically connected to the sensing module 113 , for example, electrically connected to the sensing module 113 via an internal circuit of the circuit board B. The power supply element 116 of this embodiment includes, for example, a battery module, a piezoelectric (piezoelectricity) module or a thermoelectric (thermoelectric) module, but is not limited thereto. Specifically, the piezoelectric module can convert the pressure in the tire into electrical energy, and the thermoelectric module can convert the thermal energy in the tire into electrical energy. In addition, the main body 110 may further include a wireless signal transceiving element 117 disposed in the inner casing 112 and electrically connected to the sensing module 113 for transceiving the data of the air pressure sensing element 1130 and the data of the temperature sensing element 1131 . The wireless signal transceiving element 117 is electrically connected to the sensing module 113 and the power supply element 116 , for example, through a circuit inside the circuit board B. As shown in FIG. In addition, the wireless signal transceiving element 117 may be a Bluetooth (Bluetooth) transceiving element or a Wi-Fi transceiving element, but is not limited thereto.

Incidentally, the tire pressure detection device 100 may further include a rubber layer 130 (shown in FIG. 5 ) disposed on the main body 110 . The adhesive layer 130 is used to bond the main body 110 to the connecting wall CW of the wheel frame W (as shown in FIG. 1 ), so as to further enhance the installation firmness of the tire pressure detection device 100 . The adhesive layer 130 may be disposed on the bottom wall 1120 of the inner casing 112, but is not limited thereto. The adhesive layer 130 is, for example, an adhesive material suitable for adhering to a metal surface, and may have the characteristics of waterproof and high temperature resistance. For example, 3M Company's 944 double-sided tape, but not limited thereto.

Compared with the prior art, since the tire pressure detection device 100 of the present embodiment is clamped to the wheel frame W by the fixing member 120 , the problem of the tire pressure detection device falling off due to the deterioration of the colloid in the prior art can be avoided. In addition, because the fixing member 120 extends from the first annular end surface AS1 to the second annular end surface AS2 of the inner annular wall IW, so as to be completely clamped to the inner annular wall IW, the tire pressure detection device 100 of this embodiment can It is firmly installed on the wheel frame W, thereby improving the safety of driving.

6 is a schematic cross-sectional view of a body of a tire pressure detection device according to another embodiment of the present invention. The structure and advantages of the tire pressure detection device 100a of this embodiment are similar to those of the previous embodiments, and only the differences will be described below. The body 110a of this embodiment omits the cover plate 115 in FIG. 5 , and instead uses the sealing layer 118a to protect the electronic components in the inner casing 112 . Specifically, the encapsulant layer 118 a is disposed in the inner casing 112 and covers the sensing module 113 and other electronic components, such as the power supply component 116 and the wireless transceiver component 117 . In addition, the encapsulant layer 118a has a through hole T3 (third through hole) exposing the sensing module 113 . Specifically, the sealant layer 118a has, for example, two through holes T3 exposing the air pressure sensing element 1130 and the temperature sensing element 1131 respectively, so as to detect the air pressure and temperature in the tire. Incidentally, the tire pressure detection device 100a of this embodiment may be provided with the rubber layer 130 shown in FIG. 5, but is not limited thereto.

To sum up, since the present invention adopts the tire pressure detection device clamped on the inner annular wall of the wheel frame by the fixing member, wherein the fixing member extends from the first annular end face of the inner annular wall to the second annular end face, To be completely clamped to the inner ring wall. Therefore, the tire pressure detection device of the present invention can be firmly installed on the wheel frame, thereby improving the safety of driving.

Although the present invention has been disclosed as above with examples, it is not intended to limit the present invention. Those with ordinary knowledge in the technical field to which the present invention pertains can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be determined by the scope of the appended patent application.

100: Tire pressure detection device

110: Ontology

120: Fixing parts

AS1: The first annular end face

AS2: Second annular end face

CW: connecting wall

E: edge

IS: inner side

IW: Inner Ring Wall

OW: Outer Ring Wall

R: Rib

W: wheel frame

Claims (14)

A tire pressure detection device is suitable for being fixed on a wheel frame, the wheel frame has an inner ring wall, an outer ring wall and a connecting wall, the connecting wall is connected between the inner ring wall and the outer ring wall, the The inner annular wall has a first annular end face and a second annular end face opposite to each other, and the tire pressure detection device includes: a body adapted to be disposed on the connecting wall and adjacent to the first annular end face; and A fixing piece is connected to the main body and extends from the first annular end surface to the second annular end surface to be clamped to the inner annular wall. The tire pressure detection device according to claim 1, wherein the fixing member has: a connecting portion connected to a side wall of the main body; a first abutting portion connected to the connecting portion and abutting against the first an annular end face; a second abutting portion abutting against the second annular end face; an extension portion connecting between the first abutting portion and the second abutting portion; and a hook portion connecting to the second abutting portion A side of the second abutting portion away from the extending portion is hooked against the inner ring wall. The tire pressure detection device according to claim 2, wherein the side wall of the main body has at least one button hole, and the connecting portion extends into the inner side of the side wall and has at least one button portion that is fastened to the at least one button hole. The tire pressure detection device according to claim 3, wherein the main body abuts against the inner ring wall. The tire pressure detection device according to claim 1, wherein the main body comprises: an inner casing having the side wall, a bottom wall and an opening opposite to the bottom wall, the side wall is connected to the bottom wall; a sensor A measuring module is arranged in the inner casing, the sensing module includes a pressure sensing element; and an outer casing is combined with the inner casing, and the outer casing has a top wall opposite to the bottom wall, The top wall covers the opening and has a first through hole. The tire pressure detection device according to claim 5, wherein the material of the inner casing comprises ABS or PVC, and the material of the outer casing comprises silicone. The tire pressure detection device according to claim 5, wherein the main body further comprises a cover plate covering the opening, the cover plate has a second through hole, and the outer casing covers the cover plate. The tire pressure detection device according to claim 5, wherein the main body further comprises a sealing layer disposed on the inner casing and covering the sensing module, the sealing layer having a third through hole exposing the the sensing module. The tire pressure detection device according to claim 5, wherein the main body further comprises a power supply element disposed in the inner casing and electrically connected to the sensing module. The tire pressure detection device according to claim 9, wherein the power supply element comprises a battery module, a piezoelectric module or a thermoelectric module. The tire pressure detection device according to claim 5, wherein the sensing module further comprises a temperature sensing element. The tire pressure detection device as claimed in claim 5, wherein the main body further comprises a wireless signal transceiver element disposed in the inner casing and electrically connected to the sensing module. The tire pressure detection device according to claim 1, further comprising an adhesive layer disposed on the main body and suitable for adhering the main body to the connecting wall. The tire pressure detection device according to claim 1, wherein the connecting wall of the wheel frame has a plurality of ribs, and the body abuts between two adjacent ribs.

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