External tire pressure device

Abstract

An external tire pressure device comprises a bottom shell, an upper cover fixedly buckled with the bottom shell and a circuit assembly arranged in a closed space formed by the bottom shell and the upper cover, the bottom shell is provided with a cylinder, and an annular side wall and a bottom wall connected with the annular side wall are formed at the top end of the cylinder. A top core is arranged on the lower surface of the bottom wall, and an eccentric lengthwise ventilation hole is eccentrically formed in the top core relative to the longitudinal axis of the bottom shell. The device is firm in structure and sufficient in ventilation capacity.

Description

Technical Field

[0001] The utility model relates to the technical field of tire pressure sensors, and more specifically to an external tire pressure device. Background Art

[0002] As we all know, tire pressure sensor is a very common electronic device used to monitor car tire pressure. It can monitor tire pressure data in real time while the car is driving, ensure tire pressure consistency, increase tire service life, and effectively reduce fuel consumption.

[0003] A top core is usually arranged in the bottom shell of the tire pressure sensor. A vent hole is provided in the top core so that after the tire pressure sensor is connected to the tire valve, the gas in the tire can enter the tire pressure sensor through the vent hole and contact the corresponding tire pressure sensing circuit, thereby measuring the gas pressure inside the tire in real time.

[0004] In the prior art, the vent hole is usually opened at the center of the top core, which is convenient for processing the top core. However, this centrally arranged structure has defects. Specifically, the vent hole opened in the center causes the force-bearing area of ​​the entire top core to be relatively small, and the wall thickness around the top core becomes thinner, so it is easy for the top core to break due to the force during long-term use. In addition, the vent hole of the top core of the prior art has a small ventilation volume, which easily leads to clogging of the vent hole.

[0005] Therefore, it is necessary for the industry to provide an improved external tire pressure device to overcome the defects of the prior art. Utility Model Content

[0006] The purpose of the utility model is to solve the above-mentioned problem and provide an external tire pressure device.

[0007] In order to meet the purpose of the utility model, the utility model adopts the following technical solutions:

[0008] An external tire pressure device comprises a bottom shell, an upper cover fastened and fixed to the bottom shell, and a circuit assembly arranged in a closed space formed by the bottom shell and the upper cover, wherein the bottom shell has a column, the top end of the column forms an annular side wall and a bottom wall connected to the annular side wall. A top core is arranged on the lower surface of the bottom wall, and an eccentric longitudinal vent hole is arranged on the top core eccentrically relative to the longitudinal axis of the bottom shell.

[0009] Preferably, the eccentric longitudinal vent hole is an arc-shaped eccentric longitudinal vent hole.

[0010] Preferably, the external tire pressure device also includes a valve seal, which is integrally formed with the bottom shell and has an upper sealing plate and a lower sealing plate longitudinally connected to the upper sealing plate; an air vent is provided on the upper sealing plate, the upper sealing plate is arranged on the upper surface of the bottom wall, the lower sealing plate is arranged on the lower surface of the bottom wall and is sleeved on the top core, and the air vent is connected to the eccentric longitudinal air vent.

[0011] Preferably, an external thread is formed on the outer circumferential surface of the cylinder; an internal thread is formed on the inner circumferential surface of the upper cover; the upper cover is sleeved on the bottom shell, and the upper cover is fixed to the outside of the bottom shell by means of the cooperation between the external thread and the internal thread.

[0012] Further preferably, the periphery of the bottom end of the column forms an annular flange; a sealing ring is sleeved on the annular flange; and the sealing ring is tightly clamped between the annular flange and the terminal end of the upper cover.

[0013] Optionally, it also includes an anti-tampering ring, which has internal teeth; the bottom periphery of the annular flange forms external teeth; the anti-tampering ring is sleeved on the bottom end of the annular flange, and the internal teeth and the external teeth are meshed with each other.

[0014] Preferably, the circuit assembly includes a PCB board with a through hole formed on it; a support column is provided on the bottom wall with a screw hole formed on it; the PCB board is supported on the support column, and the PCB board is fixed to the support column by means of screws passing through the through hole and screwed into the screw hole.

[0015] Further preferably, the circuit assembly further comprises a battery electrically connected to the PCB board to supply power thereto.

[0016] In addition, optionally, the battery has a positive electrode sheet electrically connected to its positive electrode and a negative electrode sheet electrically connected to its negative electrode. Further preferably, the positive electrode sheet is located at the upper end of the battery, and the negative electrode sheet is located at the lower end of the battery.

[0017] Compared with the prior art, the beneficial technical effects of the utility model are as follows:

[0018] In the external tire pressure device provided by the utility model, the bottom shell has a column, and the top of the column forms an annular side wall and a bottom wall connected to the annular side wall. A top core is arranged on the lower surface of the bottom wall, and an eccentric longitudinal vent hole is arranged on the top core eccentrically relative to the longitudinal axis of the bottom shell. Since the vent hole is eccentrically arranged and the vent hole is longitudinally elongated, in other words, the cross section of the vent hole is longitudinally elongated or slender. In this way, although the area of ​​the overall cross section of the vent hole remains unchanged, due to the overall slender shape, the distance between the inner wall of the vent hole and the edge of the entire top core is large, thus ensuring that the top core has sufficient wall thickness, thereby greatly increasing the force-bearing area of ​​the top core, and ultimately increasing the structural strength of the entire top core, thereby avoiding the top core from breaking and failing during use.

[0019] Additional aspects and advantages of the present invention will be partially given in the following description, which will become apparent from the following description or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0021] Figure 1 This is a three-dimensional structural exploded view of an external tire pressure device according to an embodiment of the present utility model.

[0022] Figure 2 This is a three-dimensional structural diagram of an external tire pressure device according to an embodiment of the utility model observed from the bottom.

[0023] Figure 3 This is a three-dimensional structural diagram of the bottom shell of an external tire pressure device according to an embodiment of the utility model.

[0024] Figure 4a This is a top view of an external tire pressure device according to an embodiment of the present utility model.

[0025] Figure 4b for Figure 4a A cross-sectional view of the external tire pressure device along the AA direction is shown.

[0026] Figure 5 The utility model is a three-dimensional structural diagram of the valve seal of the external tire pressure device. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention and cannot be interpreted as limiting the present invention.

[0028] It will be understood by those skilled in the art that, unless expressly stated, the singular forms "one", "said", and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present utility model refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or their groups. It should be understood that when we say that an element is "connected" or "coupled" to another element, it can be directly connected or coupled to other elements, or there may be intermediate elements. In addition, the "connection" or "coupling" used here may include wireless connection or wireless coupling. The term "and / or" used here includes all or any unit and all combinations of one or more associated listed items.

[0029] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as the general understanding of ordinary technicians in the field to which the utility model belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as the meaning in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless specifically defined as here.

[0030] In the utility model, the bottom shell has a column, and the top of the column forms an annular side wall and a bottom wall connected to the annular side wall. A top core is arranged on the lower surface of the bottom wall, and an eccentric longitudinal vent hole is eccentrically arranged on the top core. Since the vent hole is eccentrically arranged and the vent hole is longitudinally elongated, in other words, the cross section of the vent hole is longitudinally elongated or slender. In this way, although the area of ​​the overall cross section of the vent hole remains unchanged, due to the overall slender shape, the distance between the inner wall of the vent hole and the edge of the entire top core is large, thus ensuring that the top core has sufficient wall thickness, thereby greatly increasing the force-bearing area of ​​the top core, and finally increasing the structural strength of the entire top core, avoiding the top core from breaking.

[0031] In one embodiment of the present invention, reference Figure 1-5 , an external tire pressure device 100 is provided, and the external tire pressure device 100 can be any appropriate type of industrial external tire pressure device, such as an external tire pressure device used for tire pressure monitoring in the automotive field. The utility model does not specifically limit its scope of application.

[0032] The external tire pressure device 100 includes a bottom shell 10 , an upper cover 20 fastened to the bottom shell 10 , and a circuit assembly 30 disposed in a closed space formed by the bottom shell 10 and the upper cover 20 .

[0033] The bottom shell 10 and the upper cover 20 can be fixed to each other in various ways, such as by clamping, gluing or threading. In one embodiment of the utility model, the two can be connected and fixed by clamping, such as forming a clamp ring on one of them and providing a corresponding clamping tongue on the other. The bottom shell 10 and the upper cover 20 can be fastened to each other quickly and conveniently through the cooperation of the two.

[0034] In another embodiment of the present invention, the bottom shell 10 and the upper cover 20 may also be fixed to each other by threaded connection, as described below.

[0035] The bottom shell 10 has a column 12, and the top of the column 12 forms an annular side wall 14 and a bottom wall 16 connected to the annular side wall 14. Here, it should be noted that: a top core 164 is provided on the lower surface of the bottom wall 16, and an eccentric longitudinal vent hole 1642 is eccentrically provided on the top core 164 relative to the longitudinal axis of the bottom shell 10. Here, whether it is the bottom shell 10 or the upper cover 20, the whole is a cylindrical structure, and accordingly, the column 12, the annular side wall 14 and the bottom wall 16 are also annular structures. Therefore, the eccentric setting mentioned here refers to an eccentric setting relative to the center or axis of any circular component. Longitudinal, here means that the vent hole 1642 is slender as a whole, and its width is much smaller than its length extending on the top core 164. Thus, although the cross-sectional area of ​​the vent hole 1642 does not change much overall, due to its slender structure, the distance between the inner wall of the vent hole and the edge of the entire top core is relatively large, thus ensuring that the top core has sufficient wall thickness, thereby greatly enhancing the force-bearing area of ​​the top core, and ultimately enhancing the structural strength of the entire top core, thus avoiding breakage of the top core.

[0036] In one embodiment, preferably, the eccentric longitudinal vent hole 1642 can be set as, for example, an arc-shaped eccentric longitudinal vent hole. Compared with other shapes, the arc-shaped vent hole is easy to process and manufacture, and reduces production costs; in addition, the arc-shaped vent hole can also effectively increase the ventilation volume of the top core and prevent the vent hole from being blocked. Of course, the vent hole can also be of other appropriate shapes, and the utility model does not limit this, as long as it is eccentrically set.

[0037] In another embodiment, the external tire pressure device 100 further includes a valve seal 162, which is integrally formed with the bottom shell 10 and has an upper sealing plate 1622 and a lower sealing plate 1624 longitudinally connected to the upper sealing plate 1622; the upper sealing plate 1622 is provided with a vent hole 16222, the upper sealing plate 1622 is arranged on the upper surface of the bottom wall 16, the lower sealing plate 1624 is arranged on the lower surface of the bottom wall 16 and sleeved on the top core 164, and the vent hole 16222 is in communication with the eccentric longitudinal vent hole 1642. A portion of the valve seal 162 is arranged on the upper surface of the bottom wall 16, and a portion is arranged on the lower surface of the bottom wall 16. This arrangement is achieved by directly integrally forming the valve seal 162 on the bottom shell 10 during processing, so that the valve seal 162 is not easy to fall off from the bottom wall 16, and the sealing performance to the top core 164 is very good.

[0038] Optionally, in one embodiment, an external thread 122 is formed on the outer circumferential surface of the cylinder 12; an internal thread 22 is formed on the inner circumferential surface of the upper cover 20; the upper cover 20 is sleeved on the bottom shell 10, and the upper cover 20 is fixed to the outside of the bottom shell 10 by means of the cooperation between the external thread 122 and the internal thread 22. This threaded connection method is simple and reliable, and easy to assemble, so it is preferred to use the threaded method, and of course the utility model can also use the aforementioned clamping method.

[0039] After the bottom shell 10 and the upper cover 20 are fixed to each other, it is necessary to ensure good sealing between the two to prevent external water vapor from entering the bottom shell 10, causing internal electrical components such as circuit boards to be soaked and damaged. To this end, an annular flange 124 can be formed on the periphery of the bottom end of the column 12; a sealing ring 40 is sleeved on the annular flange 124; the sealing ring 40 is tightly clamped between the annular flange 124 and the end of the upper cover 20, so that external water vapor cannot enter the bottom shell 10 from the connection between the bottom shell 10 and the upper cover 20, thereby effectively protecting the internal electronic components.

[0040] In order to enhance the safety of the Zhengege external tire pressure device 100 and prevent lawless elements from disassembling or replacing parts at will, an anti-disassembly structure can be provided. Specifically, an anti-disassembly ring 50 can be provided, which has a plurality of inner teeth 52; a plurality of outer teeth 17 are formed on the periphery of the bottom end of the annular flange 124; the anti-disassembly ring 50 is sleeved on the bottom end of the annular flange 124, and the inner teeth 52 and the outer teeth 17 are meshed with each other, that is, each inner tooth 52 is tightly clamped between two adjacent outer teeth 17, and correspondingly, each outer tooth 17 is tightly clamped between two adjacent inner teeth 52. The close engagement between the outer teeth 17 and the inner teeth 52 increases the difficulty of disassembly for the operator.

[0041] Preferably, the circuit assembly 30 includes a PCB board 32, and a through hole 322 is provided on the PCB board 32; a support column 164 is provided on the bottom wall 16, and a screw hole 1642 is provided on the support column 164; the PCB board 32 is supported on the support column 164, and the PCB board 32 is fixed to the support column 164 by means of a screw passing through the through hole 322 and screwing into the screw hole 1642. Various circuit structures can be provided on the PCB board 32 to detect the internal tire pressure of the automobile tire. The utility model is not repeated in comparison.

[0042] In addition, the circuit assembly 30 further includes a battery 34 electrically connected to the PCB board 32 to supply power thereto. Furthermore, the battery 34 has a positive electrode sheet 36 electrically connected to its positive electrode and a negative electrode sheet 38 electrically connected to its negative electrode. The positive electrode sheet 36 is located at the upper end of the battery 34, and the negative electrode sheet 38 is located at the lower end of the battery 34. Through the above two electrode sheets, the battery 34 can quickly and reliably establish an electrical connection with the corresponding electrodes on the PCB board 32, so that the PCB board 32 can be supplied with power, ensuring the normal operation of the PCB board 32.

[0043] Those skilled in the art will appreciate that the various operations, methods, steps, measures, and schemes in the processes discussed in this application may be alternated, altered, combined, or deleted. Further, other steps, measures, and schemes in the various operations, methods, and processes discussed in this application may also be alternated, altered, rearranged, decomposed, combined, or deleted. Further, the steps, measures, and schemes in the prior art that are similar to those disclosed in this application may also be alternated, altered, rearranged, decomposed, combined, or deleted.

[0044] The above description is only a partial implementation method of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. An external tire pressure device, comprising a bottom shell, an upper cover fastened and fixed to the bottom shell, and a circuit assembly arranged in a closed space formed by the bottom shell and the upper cover, wherein the bottom shell has a column, the top end of the column forms an annular side wall and a bottom wall connected to the annular side wall; characterized in that: A top core is arranged on the lower surface of the bottom wall, and an eccentric longitudinal vent hole is arranged on the top core eccentrically relative to the longitudinal axis of the bottom shell.

2. The external tire pressure device according to claim 1, characterized in that: The eccentric longitudinal vent hole is an arc-shaped eccentric longitudinal vent hole.

3. The external tire pressure device according to claim 2, characterized in that: It also includes a valve seal, which is integrally formed with the bottom shell and has an upper sealing plate and a lower sealing plate longitudinally connected to the upper sealing plate; an air vent is provided on the upper sealing plate, the upper sealing plate is arranged on the upper surface of the bottom wall, the lower sealing plate is arranged on the lower surface of the bottom wall and is sleeved on the top core, and the air vent is connected to the eccentric longitudinal air vent.

4. The external tire pressure device according to claim 1, characterized in that: An external thread is formed on the outer circumferential surface of the cylinder; an internal thread is formed on the inner circumferential surface of the upper cover; the upper cover is sleeved on the bottom shell, and the upper cover is fixed to the outside of the bottom shell by means of the cooperation between the external thread and the internal thread.

5. The external tire pressure device according to claim 4, characterized in that: The bottom periphery of the column forms an annular flange; a sealing ring is sleeved on the annular flange; and the sealing ring is tightly clamped between the annular flange and the end of the upper cover.

6. The external tire pressure device according to claim 5, characterized in that: It also includes an anti-tampering ring, which has internal teeth; the bottom periphery of the annular flange forms external teeth; the anti-tampering ring is sleeved on the bottom end of the annular flange, and the internal teeth and the external teeth are meshed with each other.

7. The external tire pressure device according to claim 1, characterized in that: The circuit assembly includes a PCB board with a through hole formed on it; a support column is arranged on the bottom wall with a screw hole formed on it; the PCB board is supported on the support column, and the PCB board is fixed to the support column by means of screws passing through the through hole and screwing into the screw hole.

8. The external tire pressure device according to claim 7, characterized in that: The circuit assembly also includes a battery electrically connected to the PCB board to supply power thereto.

9. The external tire pressure device according to claim 8, characterized in that: The battery has a positive electrode sheet electrically connected to the positive electrode thereof and a negative electrode sheet electrically connected to the negative electrode thereof.

10. The external tire pressure device according to claim 9, characterized in that: The positive electrode sheet is located at the upper end of the battery, and the negative electrode sheet is located at the lower end of the battery.

Images