Tire pressure sensor control box

Abstract

The utility model relates to the technical field of tire pressure monitoring, and provides a tire pressure sensor control box, which comprises a box body, a box cover and a control board arranged in the box body, a pair of mounting guide grooves with opposite groove openings are horizontally arranged on the left side and the right side of an opening of the box body towards the bottom direction, a wedge-shaped bulge is arranged at the bottom of the lower side groove wall of each mounting guide groove, and the wedge-shaped bulge is arranged on the box cover. A pair of first vertical clamping strips is arranged at the bottom of an inner cavity of the box body; the box cover is used for sealing the box body, and a pair of second vertical clamping strips are arranged on the inner wall of the box cover; the left side and the right side of the control plate are pushed into the mounting guide grooves, the tail end of the control plate is clamped between the upper side groove walls of the mounting guide grooves and the wedge-shaped protrusions, and the front side and the rear side of the control plate are clamped between the pair of first vertical clamping strips and the pair of second vertical clamping strips. According to the utility model, the freedom degree of up-and-down movement and the freedom degree of front-and-back movement and left-and-right movement of the control panel are limited, and no abnormal sound is generated by displacement even in a bumpy environment of an automobile under the condition of no screw fixation.

Description

Technical Field

[0001] This utility model relates to the field of tire pressure monitoring technology, specifically to a tire pressure sensor control box. Background Technology

[0002] Tire pressure monitoring systems (TPMS) are electronic devices used to monitor vehicle tire pressure in real time, thereby improving driving safety, fuel economy, and tire life. Most TPMS are direct sensors, installed inside the tire (on the valve stem or rim) to directly measure air pressure and temperature, transmitting the data wirelessly to a control box, and then displaying it on the vehicle's onboard display. Therefore, the control box contains a corresponding control board, used for both receiving wireless signals and communicating with the vehicle's main unit.

[0003] Traditional control boards are fixed in the control box with screws. For example, the utility model patent with authorization announcement number CN215582266U and title "A Tire Pressure Controller Housing" discloses such a solution. Its advantage is that it is reliably fixed and will not produce abnormal noise due to movement during vehicle bumps. However, its disadvantage is also obvious, that is, it requires screws to tighten, which affects production efficiency.

[0004] Therefore, people have sought screwless fixing methods. For example, the patent announcement number CN217283805U, entitled "A Screwless Mounting Structure for PCB Boards," discloses such a solution. This solution involves setting a positioning notch on the PCB board, setting anti-misalignment ribs inside the box that match the positioning notch to position the PCB board, setting a support column below the PCB board, and setting a pressing column on the box cover to press the PCB board. However, its application in the automotive scenario still has room for improvement: 1. The existing PCB board needs to be modified or slotted; 2. To prevent abnormal noise in a long-term bumpy environment, the fit tolerance accuracy of the positioning notch and the anti-misalignment ribs is required to be high. At the same time, since the pressing and fixing is along the direction perpendicular to the PCB board, the fit accuracy of the pressing column and the thickness of the PCB board is required to be high. Otherwise, without interference, it cannot be pressed down, and if the interference is too large, it may cause the box cover and the box body to not fit tightly. Utility Model Content

[0005] The purpose of this utility model is to provide a tire pressure sensor control box, which aims to optimize the installation structure and solve the problem of fixing its control board.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A tire pressure sensor control box includes a box body, a box cover, and a control board installed in the box body. The box body has a pair of horizontally aligned mounting guide grooves on its left and right sides facing its bottom. Each mounting guide groove has a wedge-shaped protrusion at the bottom of its lower side wall. The bottom of the box body's inner cavity has a pair of first vertical retaining strips. The box cover is used to close the box body, and the inner wall of the box cover has a pair of second vertical retaining strips. The left and right sides of the control board are pushed into the mounting guide grooves, and their ends are engaged between the upper side wall of the mounting guide groove and the wedge-shaped protrusion. The front and rear sides of the control board are engaged between the pair of first vertical retaining strips and the pair of second vertical retaining strips.

[0008] Furthermore, the interference fit between the wedge-shaped protrusion and the control plate is 0.1-0.3mm; the interference fit between the first vertical locking strip and the second vertical locking strip is 0.5-2mm.

[0009] Furthermore, the four corner areas of the inner wall of the box cover form locking feet, and the inner cavity of the box body forms locking holes corresponding to the locking feet, so that the box cover and the box body are locked together.

[0010] Furthermore, the lid of the box is provided with several latches, and the outside of the opening of the box body is provided with latches corresponding to the latches.

[0011] Furthermore, the position of the bayonet is set to correspond to the position of the bayonet foot.

[0012] Furthermore, the inner wall of the box cover protrudes to form a surrounding dam corresponding to the root position of the latch.

[0013] Furthermore, the cofferdam has several reinforcing ribs extending outwards on its left and right sides.

[0014] Furthermore, a guide notch is formed on the cofferdam to guide the control board to engage, and the second vertical locking strip is located in the guide notch.

[0015] Furthermore, the interference fit between the root of the guide notch and the control board is 0.1-0.3mm.

[0016] Furthermore, the outer left, right and rear sides of the box body are provided with fixing slots.

[0017] By adopting the above technical solution, this utility model has the following advantages compared with the prior art:

[0018] 1. This utility model, by setting an installation guide groove, facilitates the positioning and insertion of the control board, ensuring that the end of the control board will not shift during the force process when it is engaged between the wedge-shaped protrusion and the upper side wall of the installation guide groove. In this way, the wedge-shaped protrusion engages one end of the control board, limiting the freedom of the control board to move up and down. The first and second vertical locking strips engage the edge of the control board, causing slight deformation of the edge of the control board to limit the freedom of the control board to move forward, backward, left, and right. Even in the bumpy environment of a car, it will not shift or produce abnormal noise without the need for screw fixing.

[0019] 2. Since the first and second vertical locking strips of this utility model are interference-fitted to the edge of the control panel, the contact area between the vertical locking strips and the control panel is small, which easily induces edge deformation of the control panel. Moreover, since it is an edge area, it will not damage the control panel. Thus, the tolerance requirements for the thickness of the control panel or the height of the vertical locking strip are reduced, and the phenomenon that the lid and the box body may not be tightly locked due to excessive interference will not occur.

[0020] 3. This utility model utilizes the synergistic effect of the locking feet and vertical locking strips, and the edge deformation of the control plate to achieve pre-tightening of the locking feet in the locking holes, so that there will be no abnormal noise caused by the movement between the lid and the box body.

[0021] 4. This utility model uses the latch on the cover and the latch on the body to prevent the cover from swaying left and right and damaging the latch pins when plugging and unplugging the data connector cable harness.

[0022] 5. This utility model strengthens the box cover by using a dam on the inner wall of the box cover, so that the box cover can have better rigidity to act on the control plate, the wedge-shaped protrusion, the first vertical locking strip, and the second vertical locking strip, thus completing the reliable fixation of the control plate. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of one axis of the present invention;

[0024] Figure 2 This is another axonometric view of the present invention;

[0025] Figure 3 This is another axonometric view of the present invention;

[0026] Figure 4 This is a disassembly diagram of the present invention;

[0027] Figure 5 for Figure 4 Partial detail image;

[0028] Figure 6 This is another disassembly diagram of the present invention;

[0029] Figure 7 for Figure 6 Partial detail image;

[0030] Figure 8 This is a schematic diagram showing the connection between the control board and the box body of this utility model.

[0031] Explanation of reference numerals in the attached figures:

[0032] 100. Box body; 110. Opening; 120. Mounting guide groove; 130. Wedge-shaped protrusion; 140. First vertical retaining strip; 150. Retaining hole; 160. Retaining block; 170. Fixing slot;

[0033] 200. Box lid; 210. Clearance opening; 220. Second vertical retaining strip; 230. Foot retainer; 240. Clamping opening; 250. Cofferdam; 251. Reinforcing rib; 252. Guide notch;

[0034] 300. Control board; 310. Signal interface. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0036] Additionally, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" are all based on the orientation or positional relationship shown in the accompanying drawings. They are merely for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element of this utility model must have a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] When an element is referred to as being "fixed to," "set on," or "contained on" another element, it can be directly on or indirectly on that other element. When an element is referred to as being "connected to," it can be directly connected to or indirectly connected to that other element.

[0038] Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] Example

[0040] Please refer to Figures 1-8 As shown, this embodiment provides a tire pressure sensor control box, which includes a box body 100, a box cover 200, and a control board 300 installed in the box body 100. The control board 300 has wireless communication capabilities to communicate with the tire pressure sensor in the tire to obtain tire status information, such as temperature data and tire pressure data. The control board 300 is provided with a signal interface 310 for connecting and communicating with the vehicle controller to transmit the acquired tire status information to the vehicle controller. The box cover 200 is provided with a clearance opening 210 corresponding to the signal interface 310.

[0041] Please refer to Figure 4 and Figure 5 As shown, the left and right sides of the opening 110 of the box body 100 are horizontally provided with a pair of opposing mounting guide grooves 120 facing towards their bottom. The bottom of the lower groove wall of each mounting guide groove 120 is provided with a wedge-shaped protrusion 130, thereby forming an engaging space between the lower groove wall and the upper groove wall for engaging the ends of a pair of control plates 300. The bottom of the inner cavity of the box body 100 is provided with a pair of first vertical retaining strips 140, which are vertically arranged relative to the horizontal arrangement of the control plates 300.

[0042] Correspondingly, please refer to Figure 5 and Figure 7 As shown, the lid 200 is used to close the box body 100. A pair of second vertical retaining strips 220 are provided on the inner wall of the lid 200. Thus, the first vertical retaining strip 140 and the second vertical retaining strip 220 form a locking space for the control panel 300 in the front-rear direction. The wedge-shaped protrusion 130, the first vertical retaining strip 140, and the second vertical retaining strip 220 all have wedge-shaped cross-sections. The surface of the wedge acting on the control panel 300 is circular or pointed; in this embodiment, it is circular with a diameter of 0.2 mm.

[0043] Therefore, please refer to the following: Figure 8 As shown, the left and right sides of the control plate 300 are pushed into the mounting guide groove 120, and the ends are engaged between the upper side wall of the mounting guide groove 120 and the wedge-shaped protrusion 130, limiting the vertical movement of the control plate 300. The front and rear sides of the control plate 300 are engaged between a pair of first vertical retaining strips 140 and a pair of second vertical retaining strips 220, causing slight deformation of the edges of the control plate 300 to limit its vertical and horizontal movement. Even without screw fixing, it will not shift or produce abnormal noise in the bumpy environment of a car.

[0044] It is easy to understand that the end of the control plate 300 is engaged with the upper side wall of the mounting guide groove 120 and the wedge-shaped protrusion 130 through an interference fit. That is, the engagement is achieved by a slight deformation of the upper side wall of the mounting guide groove 120 or by the wedge-shaped protrusion 130 acting on a local part of the edge of the control plate 300 to cause a slight deformation. In a feasible embodiment, the interference fit of the wedge-shaped protrusion 130 with the control plate 300 is 0.1-0.3mm, which can effectively engage the control plate 300 and prevent the edge area of ​​the control plate 300 from breaking and losing its engaging function. The interference fit of the first vertical locking strip 140 and the second vertical locking strip 220 is 0.5-1.5mm. The engagement here is achieved by squeezing the edge of the control plate 300 to create a notch to adapt to the first vertical locking strip 140 and the second vertical locking strip 220, thereby limiting its forward and backward and left and right movement.

[0045] This design simplifies the assembly process, enabling screwless assembly of the control board 300 within the housing 100. It eliminates the need for modifications to the control board 300, ensuring backward compatibility with already released control boards 300 and reducing the number of control board 300 models and inventory. Furthermore, it frees the product from the limitation of the cover 200 being horizontally aligned with the control board 300 (in which case the cover 200 and housing 100 are assembled vertically), instead allowing for a vertical relationship (side-mounted). This results in increased lateral strength of the housing 100, and the mounting slots on the side of the housing 100 facilitate better connection and installation in vehicles. Please refer to [reference needed]. Figure 1-3 As shown, with this design, there are 3 fixing slots in this embodiment, which are set on the left, right and rear sides of the outside of the box 100, allowing for more flexible selection of the required fixing slot 170 for installation.

[0046] In this utility model, the lid 200 and the box body 100 are also connected by a snap-fit ​​mechanism. For details, please refer to [reference needed]. Figure 4 and Figure 6 As shown, the four corner areas of the inner wall of the lid 200 form locking feet 230, and the inner cavity of the box body 100 forms locking holes 150 corresponding to the locking feet 230. Thus, the locking feet 230 are inserted into the locking holes 150, thereby achieving the locking connection between the lid 200 and the box body 100.

[0047] In addition, please refer to Figure 4 As shown, in a preferred embodiment, the cover 200 is provided with a plurality of latches 240, and the opening 110 of the housing 100 is provided with latching blocks 160 corresponding to the latches 240. This prevents the cover 200 from being subjected to force and damaging the latch pins 230 when plugging or unplugging the data connector cable harness. In this embodiment, the positions of the latches 240 correspond to the positions of the latch pins 230.

[0048] To enhance the strength of the locking pin 230 and the lid 200, please refer to... Figure 6 As shown, in a preferred embodiment, the inner wall of the cover 200 protrudes to form a surrounding dam 250 corresponding to the root position of the latch 230. This prevents the latch 230 from breaking and provides the cover 200 with better rigidity, allowing it to engage with the control plate 300 as intended, enabling the control plate 300 to engage with the wedge-shaped protrusion 130, the first vertical latch 140, and the second vertical latch 220. In a further embodiment, the surrounding dam 250 has several reinforcing ribs 251 extending outwards on its left and right sides.

[0049] In a more preferred embodiment, please refer to Figure 7 As shown, a guide notch 252 is formed on the cofferdam 250 for engaging the control plate 300. A second vertical locking strip 220 is located in the guide notch 252. Under the action of the guide notch 252, the second vertical locking strip 220 can better act on the edge of the control plate 300. Furthermore, more preferably, the root of the guide notch 252 can engage with the edge of the control plate 300, with an interference fit of 0.1-0.3 mm.

[0050] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A tire pressure sensor control box, comprising a box body, a box cover, and a control board installed in the box body, characterized in that: The box body has a pair of horizontally opposite mounting guide grooves on the left and right sides of the opening, and a wedge-shaped protrusion at the bottom of the lower side wall of each mounting guide groove. The bottom of the inner cavity of the box body has a pair of first vertical retaining strips. The lid is used to close the box body, and a pair of second vertical retaining strips are provided on the inner wall of the lid; The left and right sides of the control board are pushed into the mounting guide groove and the ends are engaged between the upper side wall of the mounting guide groove and the wedge-shaped protrusion. The front and rear sides of the control board are engaged between the pair of first vertical locking strips and the pair of second vertical locking strips.

2. The tire pressure sensor control box as described in claim 1, characterized in that: The interference fit between the wedge-shaped protrusion and the control board is 0.1-0.3mm; the interference fit between the first vertical locking strip and the second vertical locking strip is 0.5-2mm.

3. The tire pressure sensor control box as described in claim 2, characterized in that: The inner wall of the box lid forms locking feet at the four corners, and the inner cavity of the box body forms locking holes corresponding to the locking feet, so that the box lid and the box body can be locked together.

4. The tire pressure sensor control box as described in claim 3, characterized in that: The lid of the box is provided with several latches, and the outside of the opening of the box body is provided with latches corresponding to the latches.

5. The tire pressure sensor control box as described in claim 4, characterized in that: The position of the bayonet slot corresponds to the position of the bayonet foot.

6. The tire pressure sensor control box as described in claim 3, characterized in that: The inner wall of the box cover protrudes to form a surrounding dam at the base of the locking foot.

7. The tire pressure sensor control box as described in claim 6, characterized in that: The cofferdam has several reinforcing ribs extending outwards on its left and right sides.

8. The tire pressure sensor control box as described in claim 6, characterized in that: A guide notch is formed on the cofferdam to guide the control board to engage, and the second vertical locking strip is located in the guide notch.

9. The tire pressure sensor control box as described in claim 8, characterized in that: The interference fit between the root of the guide notch and the control board is 0.1-0.3 mm.

10. The tire pressure sensor control box as described in claim 1, characterized in that: The box body is provided with fixing slots on the left, right and rear sides.

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