A tire pressure monitoring device

Abstract

This utility model relates to the technical field of tire pressure monitoring, and in particular to a vehicle tire pressure monitoring device, including a rod body. A rotating coupling is connected to the end of the rod body, and a display is connected to the surface of the rotating coupling. A USB charging port is provided on the side of the display, and a sealing plug is installed on the surface of the USB charging port. A telescopic component is provided inside the rod body, and a sealing component is provided on the surface of the telescopic component. This vehicle tire pressure monitoring device, through the design of the telescopic component and the sealing component, can adjust its length according to the tire valve depth and rim space size of different vehicle models. This avoids collision and friction between the monitoring head and the inner wall of the rim after installation, reducing component wear and signal transmission interference. The sealing component forms a tight seal after the monitoring head is fully extended or retracted, preventing dust and debris from accumulating and moisture from seeping in when the device is idle, and preventing air leakage due to seal failure during reuse, thus ensuring data detection accuracy.

Description

Technical Field

[0001] This utility model relates to the field of tire pressure monitoring technology, and in particular to a vehicle tire pressure monitoring device. Background Technology

[0002] Tire pressure monitoring is a vehicle safety assistance technology used to monitor key parameters such as tire pressure and temperature in real time, and to issue timely warnings to the driver when these parameters are abnormal. It typically consists of a sensor installed on the tire, a signal transmission module, and an in-vehicle display terminal. The sensor collects real-time tire data, and the signal transmission module sends the data to the display terminal, allowing the driver to intuitively understand the tire status. It can effectively prevent problems such as tire blowouts, accelerated tire wear, and increased fuel consumption caused by abnormal tire pressure, thus improving driving safety and economy. It has now become a standard or optional safety feature in most cars, therefore, there is a particular need for a vehicle tire pressure monitoring device.

[0003] Chinese Patent CN217477012U, published on September 23, 2022, discloses a tire pressure monitoring device for automobiles. By utilizing a hanging ring on a dust plug located in a storage slot, the device can be hung upside down for easy storage and to prevent the USB charging port from facing upwards, thus reducing dust ingress even when not in use. The dust plug provides both dust protection and hanging functionality, enhancing its overall performance. However, this tire pressure monitoring device has a simple monitoring head structure. During installation, its length cannot be adjusted according to the depth of the tire valve or the size of the rim space for different vehicle models. For vehicles with deep valve recesses or compact rim structures, the monitoring head is prone to collision and friction with the inner wall of the rim after installation, accelerating component wear and potentially interfering with signal transmission. Furthermore, the monitoring head lacks targeted sealing and dustproofing measures after use, easily absorbing dust and debris and allowing moisture to seep in, leading to seal failure, air leakage, and reduced data detection accuracy upon reuse. Utility Model Content

[0004] The purpose of this invention is to provide a tire pressure monitoring device for automobiles to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a car tire pressure monitoring device, comprising a rod, a rotating coupling connected to the end of the rod, a display connected to the surface of the rotating coupling, a USB charging port provided on the side of the display, a sealing plug installed on the surface of the USB charging port, a telescopic component provided inside the rod, and a sealing component provided on the surface of the telescopic component. The telescopic assembly includes a telescopic groove formed inside the rod body. A motor is connected to the inner end of the telescopic groove, and a threaded rod is connected to the output end of the motor. A baffle is connected to the end of the threaded rod, and a screw collar is threaded to the outer wall of the threaded rod. A telescopic sleeve is fixedly connected to the outer wall of the screw collar, and a limit block is connected to the side of the telescopic sleeve. A limit groove is formed inside the telescopic groove, and a limit rod is connected to the inner end of the limit groove. The limit rod passes through the limit block, and one end of the telescopic sleeve extends through the rod body to the outer end, where a monitoring head is connected. A sealing assembly is provided on the surface of the monitoring head.

[0006] Preferably, the outer diameter of the baffle is larger than the outer diameter of the threaded rod, and the inner surface of the baffle can fit against the end surface of the threaded rod collar.

[0007] Preferably, the inner thread of the screw collar is compatible with the outer thread of the screw rod, and the outer wall of the screw collar and the inner wall of the telescopic sleeve are coaxially fixedly connected.

[0008] Preferably, the outer wall size of the limiting block is adapted to the inner wall size of the limiting groove, and the outer wall of the limiting rod matches the through hole diameter of the limiting block.

[0009] Preferably, the sealing assembly includes a threaded groove formed on the outer wall of the monitoring head. A sealing sleeve is fitted onto the outer wall of the monitoring head. A threaded block is connected to the inner wall of the sealing sleeve. An anti-slip protrusion is connected to the outer side of the sealing sleeve. A sealing gasket is connected to the inner side of the sealing sleeve. A positioning groove is formed on the inner side of the monitoring head. A spring is connected to the inner end of the positioning groove. A limit plate is connected to the other end of the spring. A locking block is connected to the surface of the limit plate. A silicone barb is connected to the side of the locking block. A locking hole is formed on the side of the sealing gasket.

[0010] Preferably, the outer wall thread of the threaded block is adapted to the inner wall thread of the threaded groove, and the anti-slip protrusions are distributed in multiple identical sets at equal intervals around the center of the sealing sleeve.

[0011] Preferably, the limiting plate forms a telescopic structure by means of a spring and a locking block, and the outer diameter of the locking block is adapted to the inner diameter of the locking hole.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This automotive tire pressure monitoring device, through the setting of a telescopic component and a sealing component, allows the telescopic component to drive the monitoring head to extend and retract axially, and can adjust the length according to the tire valve depth and rim space size of different vehicle models, avoiding collision and friction between the monitoring head and the inner wall of the rim after installation, reducing component wear and signal transmission interference. The sealing component can form a tight seal after the monitoring head is extended and retracted to the correct position, preventing it from absorbing dust and debris and seeping in moisture when it is idle after use, preventing the seal from failing and leaking air when used again, ensuring data detection accuracy, and solving the problems of poor adaptability and insufficient dust protection of traditional devices. Attached Figure Description

[0013] Figure 1 This is a side view of the structure of the present utility model; Figure 2 This is a schematic diagram of the internal structure of the rod body of this utility model; Figure 3 This is a schematic diagram of the telescopic component structure of this utility model; Figure 4 This is a schematic diagram of the sealing assembly structure of this utility model; Figure 5 This utility model Figure 4 Enlarged structural diagram at point A in the middle.

[0014] In the diagram: 1. Rod body; 2. Rotating coupling; 3. Display; 4. USB charging port; 5. Sealing plug; 6. Telescopic assembly; 601. Telescopic groove; 602. Motor; 603. Threaded rod; 604. Baffle; 605. Screw collar; 606. Telescopic sleeve; 607. Limiting block; 608. Limiting groove; 609. Limiting rod; 610. Monitoring head; 7. Sealing assembly; 701. Threaded groove; 702. Sealing sleeve; 703. Threaded block; 704. Anti-slip protrusion; 705. Sealing washer; 706. Positioning groove; 707. Spring; 708. Limiting plate; 709. Locking block; 710. Silicone barb; 711. Locking hole. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-5This utility model provides a technical solution: a car tire pressure monitoring device, including a rod 1, a rotating coupling 2 connected to the end of the rod 1, a display 3 connected to the surface of the rotating coupling 2, a USB charging port 4 provided on the side of the display 3, a sealing plug 5 installed on the surface of the USB charging port 4, a telescopic component 6 provided inside the rod 1, and a sealing component 7 provided on the surface of the telescopic component 6. The telescopic assembly 6 includes a telescopic groove 601, which is formed inside the rod body 1. A motor 602 is connected to the inner end of the telescopic groove 601. A threaded rod 603 is connected to the output end of the motor 602. A baffle 604 is connected to the end of the threaded rod 603. A screw collar 605 is threadedly connected to the outer wall of the threaded rod 603. A telescopic sleeve 606 is fixedly connected to the outer wall of the screw collar 605. A limit block 607 is connected to the side of the telescopic sleeve 606. A limit groove 608 is formed inside the telescopic groove 601. A limit rod 609 is connected to the inner end of the limit groove 608 and passes through the limit block 607. One end of the telescopic sleeve 606 extends through the rod body 1 to the outer end, where a monitoring head is connected. 610, the surface of the monitoring head 610 is provided with a sealing component 7. Through the setting of the telescopic component 6, when it is necessary to adjust the extension length of the monitoring head 610 to adapt to different tire installation requirements, or when the monitoring head 610 is retracted for protection during idle periods, the motor 602 connected to the inner end of the telescopic groove 601 inside the rod body 1 is activated. The output end of the motor 602 drives the threaded rod 603 to rotate. Since the outer wall of the threaded rod 603 is threadedly connected to the screw collar 605, and the outer wall of the screw collar 605 is fixedly connected to the telescopic sleeve 606, the rotational motion of the threaded rod 603 can be converted into linear motion of the screw collar 605 along the axial direction of the threaded rod 603, thereby driving the telescopic sleeve 606 to move synchronously. During the movement of the telescopic sleeve 606, the limiting block 607 connected to its side slides along the limiting groove 608 opened on the inner side of the telescopic groove 601, and the limiting rod 609 connected to the inner end of the limiting groove 608 passes through the limiting block 607. The cooperation between the limiting rod 609 and the limiting block 607 can restrict the circumferential rotation of the telescopic sleeve 606, ensuring that the telescopic sleeve 606 moves smoothly only along the axial direction, avoiding the positional displacement of the monitoring head 610 due to rotation. When the monitoring head 610 needs to be extended, the motor 602 drives the threaded rod 603 to rotate forward, driving the threaded collar 605 and the telescopic sleeve 606 to move away from the motor 602. One end of the telescopic sleeve 606 extends through the rod body 1 to the outer end, thereby driving its... The connected monitoring head 610 extends to a preset position. When the monitoring head 610 needs to retract, the motor 602 drives the threaded rod 603 to rotate in the opposite direction, causing the screw collar 605 and the telescopic sleeve 606 to move towards the motor 602, so that the monitoring head 610 retracts with the telescopic sleeve 606 to the vicinity of the rod body 1. The baffle 604 connected to the end of the threaded rod 603 can limit the movement stroke of the screw collar 605 to prevent the screw collar 605 from disengaging from the end of the threaded rod 603. The sealing component 7 provided on the surface of the monitoring head 610 can seal and protect the contact parts between the monitoring head 610 and the external environment during the extension and retraction process and after the extension and retraction is completed, reducing the intrusion of impurities.

[0017] Furthermore, the outer diameter of the baffle 604 is larger than that of the threaded rod 603, and the inner surface of the baffle 604 can fit against the end surface of the screw collar 605. With the baffle 604, the larger outer diameter allows the baffle 604 to form a physical block when the screw collar 605 moves towards the end of the threaded rod 603, preventing the screw collar 605 from falling off the end of the threaded rod 603 due to over-driving by the motor 602, thus ensuring the structural integrity of the telescopic component 6. The fitable surface design allows the baffle 604 to buffer the screw collar 605 when it moves to its limit position, reducing the impact force generated by the collision between the two, reducing the probability of component wear, and extending the service life of the threaded rod 603 and the screw collar 605.

[0018] Furthermore, the inner thread of the screw collar 605 is compatible with the outer thread of the threaded rod 603, and the outer wall of the screw collar 605 is coaxially fixedly connected with the inner wall of the telescopic sleeve 606. Through the setting of the screw collar 605, the compatible threads ensure that when the motor 602 drives the threaded rod 603 to rotate, the screw collar 605 can move smoothly along the outer wall of the threaded rod 603, avoiding thread jamming or slippage, and ensuring the continuity of power transmission. The coaxial fixed connection allows the axial movement of the screw collar 605 to synchronously drive the telescopic sleeve 606 to move, ensuring that the movement trajectory of the telescopic sleeve 606 and the screw collar 605 is consistent, thereby making the telescopic movement of the monitoring head 610 precise and controllable, and avoiding the positional deviation of the monitoring head 610 due to the asynchrony between the two.

[0019] Furthermore, the outer wall size of the limiting block 607 is adapted to the inner wall size of the limiting groove 608, and the outer wall of the limiting rod 609 matches the through hole diameter of the limiting block 607. Through the setting of the limiting block 607 and the limiting groove 608, the adapted size allows the limiting block 607 to slide smoothly along the inner side of the limiting groove 608, providing auxiliary guidance for the movement of the telescopic sleeve 606. At the same time, the structure of the limiting rod 609 penetrating the limiting block 607 can limit the circumferential rotation of the limiting block 607, thereby preventing the telescopic sleeve 606 from rotating with the threaded rod 603, ensuring that the telescopic sleeve 606 only moves axially, so that the monitoring head 610 always maintains the preset orientation during the telescopic process, avoiding the impact of rotation on the subsequent installation compatibility with the tire, and also reducing the frictional loss at the penetration point between the monitoring head 610 and the rod 1.

[0020] Furthermore, the sealing assembly 7 includes a threaded groove 701 formed on the outer wall of the monitoring head 610. A sealing sleeve 702 is fitted onto the outer wall of the monitoring head 610. A threaded block 703 is connected to the inner wall of the sealing sleeve 702, an anti-slip protrusion 704 is connected to the outer side of the sealing sleeve 702, and a sealing gasket 705 is connected to the inner side of the sealing sleeve 702. A positioning groove 706 is formed on the inner side of the monitoring head 610, a spring 707 is connected to the inner end of the positioning groove 706, and a limit plate 708 is connected to the other end of the spring 707. A locking block 709 is connected to the surface of the limit plate 708, and a silicone barb 710 is connected to the side of the locking block 709. The sealing gasket 705... The side of the 05 has a locking hole 711. With the sealing assembly 7, when the monitoring head 610 is extended or retracted and needs to be sealed to reduce dust and moisture intrusion, the sealing sleeve 702 is fitted onto the outer wall of the monitoring head 610. The threaded block 703 connected to the inner wall of the sealing sleeve 702 is aligned with the threaded groove 701 on the outer wall of the monitoring head 610. Then, the anti-slip protrusion 704 on the outer side of the sealing sleeve 702 is held by hand, and the sealing sleeve 702 is rotated. Through the threaded engagement of the threaded block 703 and the threaded groove 701, the sealing sleeve 702 gradually moves along the outer wall of the monitoring head 610 to the preset sealing position. During this process, the inner side of the sealing sleeve 702... The sealing gasket 705 gradually comes into contact with the outer wall of the monitoring head 610 as the sealing sleeve 702 moves. After the sealing sleeve 702 is installed in place, the sealing gasket 705 will come into close contact with the outer wall of the monitoring head 610 due to its own elastic deformation, filling the gap between the sealing sleeve 702 and the monitoring head 610, forming the first line of sealing defense. At the same time, the spring 707 connected to the inner end of the positioning groove 706 opened on the inner side of the monitoring head 610 will apply an elastic thrust to the limiting plate 708, causing the locking block 709 connected to the surface of the limiting plate 708 to extend towards the sealing sleeve 702. When the sealing sleeve 702 rotates to the locking hole opened on the side of the locking block 709 and the sealing gasket 705, When 711 is aligned, the locking block 709 will be inserted into the locking hole 711 under the pushing force of the spring 707. The silicone barb 710 connected to the side of the locking block 709 will deform due to the compression of the locking hole 711. After insertion, it will return to its original shape and engage with the edge of the locking hole 711, thus limiting and fixing the sealing sleeve 702 and preventing the sealing sleeve 702 from loosening along the thread due to vibration during vehicle operation. If it is necessary to remove the sealing sleeve 702 to maintain the monitoring head 610, simply press the locking block 709, which will compress the spring 707 and return it to the positioning groove 706, releasing the limitation on the sealing sleeve 702. Then, continue to rotate to remove the sealing sleeve 702 from the outer wall of the monitoring head 610.

[0021] Furthermore, the outer wall thread of the threaded block 703 is adapted to the inner wall thread of the threaded groove 701. Multiple sets of anti-slip protrusions 704 are evenly distributed around the center of the sealing sleeve 702. Through the arrangement of the threaded groove 701, threaded block 703, and anti-slip protrusions 704, the adapted threads ensure that when the sealing sleeve 702 rotates, the threaded block 703 can move smoothly along the threaded groove 701, avoiding thread jamming or misalignment, and allowing the sealing sleeve 702 to move precisely to the preset sealing position. The positioning ensures the precise fit between the sealing gasket 705 and the outer wall of the monitoring head 610. The multiple sets of anti-slip protrusions 704, distributed around the perimeter at equal intervals, allow for more even force distribution when the hand grips the sealing sleeve 702, effectively increasing friction during rotation. Even if the hand is contaminated with oil or moisture, it is not easy to slip, facilitating quick installation or removal of the sealing sleeve 702. At the same time, the multiple sets of designs also enhance the durability of the anti-slip protrusions 704, preventing the anti-slip effect from decreasing due to wear of a single protrusion after long-term use.

[0022] Furthermore, the limiting plate 708, through the interaction of the spring 707 and the locking block 709, forms a telescopic structure. The outer diameter of the locking block 709 is adapted to the inner diameter of the locking hole 711. Through the arrangement of the spring 707, the limiting plate 708, the locking block 709, and the locking hole 711, the telescopic structure enables the locking block 709 to have an adjustable telescopic characteristic. When the sealing sleeve 702 rotates until the locking block 709 aligns with the locking hole 711, the elastic thrust of the spring 707 can push the limiting plate 708 to quickly insert the locking block 709 into the locking hole 711, without requiring... Additional manual operation improves assembly efficiency. The matching size of the locking block and locking hole ensures that the locking block 709 fits tightly against the inner wall of the locking hole 711 after insertion, preventing the locking block 709 from shaking in the locking hole 711 due to vehicle vibration. This enhances the limiting and fixing effect on the sealing sleeve 702 and prevents the sealing sleeve 702 from loosening along the threads. At the same time, when it is necessary to disassemble the sealing sleeve, pressing the locking block 709 will compress the spring 707 to retract the locking block. The operation of releasing the limiting is simple and convenient and does not affect the disassembly and maintenance efficiency of the sealing sleeve.

[0023] Working Principle: During use, the angle of the display 3 can be adjusted via the rotating coupling 2 connected to the end of the rod 1 to clearly view the tire pressure data. The USB charging port 4 on the side of the display 3 is used to replenish the device's power. When not charging, the USB charging port 4 is sealed with a sealing plug 5 to reduce dust ingress. When the monitoring head 610 needs to be installed to adapt to different tires or when the retraction protection is idle, the motor 602 inside the telescopic groove 601 of the rod 1 is activated. The motor 602 drives the threaded rod 603 to rotate. Through the threaded engagement between the threaded rod 603 and the screw collar 605, the rotational motion is converted into the axial linear motion of the screw collar 605, which in turn drives the fixedly connected telescopic sleeve 606 to move. During the movement, the limiting block 607 on the side of the telescopic sleeve 606 slides along the limiting groove 608, and the limiting rod 609 passes through the limiting block 607 to restrict circumferential rotation, ensuring that the telescopic sleeve 606 smoothly drives the monitoring head 610 to extend to the preset position or retract to the vicinity of the rod 1. The end baffle 604 prevents the screw collar 605 from falling off. After the monitoring head 610 is extended and retracted, to reduce the intrusion of impurities, the sealing sleeve 702 of the sealing assembly 7 is placed on the outer wall of the monitoring head 610, so that the threaded block 703 is aligned with the threaded groove 701. Hold the surrounding anti-slip protrusions 704 and rotate the sealing sleeve 702 to move it to the sealing position. At this time, the sealing gasket 705 adheres to the outer wall of the monitoring head 610 to form a seal. At the same time, the spring 707 in the positioning groove 706 pushes the limiting plate 708 to drive the locking block 709 to insert into the locking hole 711. The silicone barb 710 locks and fixes to prevent loosening. The monitoring head 610 monitors the tire pressure data in real time, and the data is transmitted to the display 3 for display. If the monitoring head 610 needs to be maintained, press the locking block 709 to compress the spring 707 to release the limit, and rotate to remove the sealing sleeve 702. The whole process realizes the monitoring, adjustment and protection functions of the device through the cooperation of various components. This completes the use process of an automobile tire pressure monitoring device.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tyre pressure monitoring device for a vehicle comprising a stem (1), characterised in that: The end of the rod (1) is connected to a rotating coupling (2), the surface of the rotating coupling (2) is connected to a display (3), the side of the display (3) is provided with a USB charging port (4), the surface of the USB charging port (4) is installed with a sealing plug (5), the inside of the rod (1) is provided with a telescopic component (6), and the surface of the telescopic component (6) is provided with a sealing component (7). The telescopic assembly (6) includes a telescopic groove (601) which is formed inside the rod body (1). A motor (602) is connected to the inner end of the telescopic groove (601). A threaded rod (603) is connected to the output end of the motor (602). A baffle (604) is connected to the end of the threaded rod (603). A screw collar (605) is threadedly connected to the outer wall of the threaded rod (603). A telescopic sleeve is fixedly connected to the outer wall of the screw collar (605). The telescopic sleeve (606) has a limiting block (607) connected to its side. The telescopic groove (601) has a limiting groove (608) on its inner side. The limiting groove (608) has a limiting rod (609) connected to its inner end. The limiting rod (609) passes through the limiting block (607). One end of the telescopic sleeve (606) passes through the rod body (1) and extends to the outer end, where a monitoring head (610) is connected. The surface of the monitoring head (610) is provided with a sealing component (7).

2. The apparatus of claim 1, wherein: The outer diameter of the baffle (604) is larger than the outer diameter of the threaded rod (603), and the inner surface of the baffle (604) can fit against the end surface of the screw collar (605).

3. The apparatus of claim 1 wherein: the tire pressure monitoring device is a vehicle tire pressure monitoring device. The inner thread of the screw collar (605) is compatible with the outer thread of the threaded rod (603), and the outer wall of the screw collar (605) is coaxially and fixedly connected with the inner wall of the telescopic sleeve (606).

4. The apparatus of claim 1 wherein: the tire pressure monitoring device is a vehicle tire pressure monitoring device. The outer wall size of the limiting block (607) is adapted to the inner wall size of the limiting groove (608), and the outer wall of the limiting rod (609) matches the through hole diameter of the limiting block (607).

5. The apparatus of claim 1 wherein: the tire pressure monitoring device is a vehicle tire pressure monitoring device. The sealing assembly (7) includes a threaded groove (701) on the outer wall of the monitoring head (610). A sealing sleeve (702) is fitted on the outer wall of the monitoring head (610). A threaded block (703) is connected to the inner wall of the sealing sleeve (702). An anti-slip protrusion (704) is connected to the outer side of the sealing sleeve (702). A sealing gasket (705) is connected to the inner side of the sealing sleeve (702). A positioning groove (706) is provided on the inner side of the monitoring head (610). A spring (707) is connected to the inner end of the positioning groove (706). A limit plate (708) is connected to the other end of the spring (707). A locking block (709) is connected to the surface of the limit plate (708). A silicone barb (710) is connected to the side of the locking block (709). A locking hole (711) is provided on the side of the sealing gasket (705).

6. The apparatus of claim 5 wherein: The outer wall thread of the threaded block (703) is adapted to the inner wall thread of the threaded groove (701), and the anti-slip protrusions (704) are distributed in multiple identical groups at equal intervals around the center of the sealing sleeve (702).

7. A tire pressure monitoring device for automobiles according to claim 5, characterized in that: The limiting plate (708) is formed by the cooperation of the spring (707) and the locking block (709) to form a telescopic structure, and the outer diameter of the locking block (709) is adapted to the inner diameter of the locking hole (711).

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