Automobile tire pressure monitoring sensor and mounting tool thereof

Abstract

The invention belongs to the technical field of automobile parts, and discloses an automobile tire pressure monitoring sensor and a mounting tool thereof. The automobile tire pressure monitoring sensor comprises a sensor body, a connecting rod, an inflating valve rod and a fastening nut, the connecting rod is a cylindrical rod, one end of the connecting rod is connected with the sensor body, two clamping grooves are formed in the outer wall of the connecting rod, and the two clamping grooves are symmetrically formed in the two sides of the outer wall of the connecting rod; one end of the inflating valve rod is connected with one end, far away from the sensor body, of the connecting rod, a limiting table is arranged at one end, close to the connecting rod, of the inflating valve rod, and connecting threads are arranged on the outer wall of the inflating valve rod and located on one side, far away from the connecting rod, of the limiting table; and the fastening nut is in threaded connection with the connecting thread. The situation that the sensor body rotates along with tightening torque of the fastening nut can be avoided, the precision of the mounting position of the sensor body is good, and the situation that the sensor body makes contact with the arc surface of the wheel rim and squeezes, so that the sensor shell is broken and fails can be avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile parts, and in particular to an automobile tire pressure monitoring sensor and a mounting tool thereof. Background Art

[0002] Tires are the only parts of a car that come into contact with the ground. Good tire performance can ensure good adhesion between the tire and the road, thereby ensuring important performance of the car, such as power, braking, handling stability and smoothness. Tire pressure is one of the important factors affecting tire performance, and the tire pressure monitoring system (TPMS) can effectively monitor and alarm when tire pressure is abnormal, reminding the driver to take corrective measures such as adjusting tire pressure as soon as possible. The tire pressure monitoring sensor is the component that generates and sends tire pressure signals. It is installed inside the rim, and its installation accuracy and position affect the accuracy of signal transmission. The existing tire assembly pressing line does not have a special tire pressure monitoring sensor installation tool. When installing, directly pick up the tire pressure monitoring sensor, pass the valve stem through the designed valve hole on the rim, pre-install the nut on the valve stem from the outside, hold the sensor body with your left hand, and tighten the nut with an electric air gun with your right hand. The entire tire pressure monitoring sensor is installed, and then the tire can be installed.

[0003] In the prior art, when assembling the tire pressure monitoring sensor, there is no special installation tool and the sensor body is only held down by hand. When the nut is tightened with an electric air gun, the valve stem will rotate as the torque increases, thereby driving the sensor body to rotate. If the rotation angle is too large, the sensor body may come into contact and be squeezed with the arc surface of the rim, causing the sensor housing to rupture and fail. Summary of the invention

[0004] The object of the present invention is to provide a vehicle tire pressure monitoring sensor and a mounting tool thereof to solve the problems raised in the above background technology.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A tire pressure monitoring sensor for automobile tires, comprising:

[0007] Sensor body;

[0008] A connecting rod, wherein the connecting rod is a cylindrical rod, one end of which is connected to the sensor body, and the outer wall of the connecting rod is provided with two slots, which are symmetrically arranged on both sides of the outer wall of the connecting rod;

[0009] A valve stem, one end of which is connected to an end of the connecting rod away from the sensor body, a limiting platform is provided at one end of the valve stem close to the connecting rod, and a connecting thread is provided on the outer wall of the valve stem, and the connecting thread is located on a side of the limiting platform away from the connecting rod;

[0010] A fastening nut is threadedly connected to the connecting thread, and the fastening nut and the limiting platform can clamp the wheel rim.

[0011] Optionally, the connecting rod is provided with an air hole along the axial direction, one end of the air hole is communicated with the air passage of the valve stem, and the other end of the air hole is communicated with the air passage of the sensor body.

[0012] Optionally, one end of the valve stem away from the connecting rod is detachably connected with a dust cap.

[0013] Optionally, the diameter of the connecting rod is 10 mm, the distance between the bottoms of the two slots is 8 mm, and the width of the slot is 2.8 mm.

[0014] An installation tool for installing the above-mentioned automobile tire pressure monitoring sensor, comprising:

[0015] A hand-held rod, one end of which is provided with a U-shaped groove, the U-shaped groove is used to snap into the connecting rod, when the U-shaped groove is snapped into the connecting rod, one groove wall of the U-shaped groove snaps into one of the snapping grooves, and the other groove wall of the U-shaped groove snaps into the other of the snapping grooves;

[0016] A frame-shaped base is connected to one end of the hand-held rod having the U-shaped groove.

[0017] Optionally, a receiving groove is provided at the bottom of the frame-shaped base, and the receiving groove is used to receive the sensor body.

[0018] Optionally, a mounting groove is provided at the top of the frame-shaped base, a mounting hole is provided at the bottom of the mounting groove, the hand-held rod is provided with a connecting section, the connecting section is inserted into the mounting groove, the connecting section is provided with a connecting hole aligned with the mounting hole, and a rivet passes through the connecting hole and the mounting hole to rivet the connecting section and the mounting groove.

[0019] Optionally, a first avoidance slope is provided at the bottom of the frame-shaped base.

[0020] Optionally, a second avoidance slope is formed on a side wall of the frame-shaped base close to the U-shaped groove.

[0021] Optionally, a rounded corner is provided at the opening of the U-shaped groove.

[0022] Beneficial effects of the present invention:

[0023] The present invention improves the structure of a tire pressure monitoring sensor for automobile tires, and provides an installation tool for installing the tire pressure monitoring sensor for automobile tires. Two slots are provided on the outer wall of a connecting rod, and the two slots are symmetrically arranged on both sides of the outer wall of the connecting rod. A U-shaped slot is provided at one end of a hand-held rod, and the U-shaped slot is used to insert the connecting rod. When the U-shaped slot is inserted into the connecting rod, one slot wall of the U-shaped slot is inserted into one slot, and the other slot wall of the U-shaped slot is inserted into another slot, so that the U-shaped slot can clamp the connecting rod. During the installation process, the connecting rod is inserted into the U-shaped slot, and the hand-held rod is held tightly by hand. The hand-held rod limits the rotation of the connecting rod through the U-shaped slot, and then the rotation of the sensor body can be limited, and the sensor body can be prevented from rotating due to the tightening torque of the fastening nut. The installation position accuracy of the sensor body is good, and the sensor body can be prevented from being contacted and squeezed with the arc surface of the wheel rim, resulting in the sensor housing being broken and failing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0025] Figure 1 It is a structural schematic diagram of the automobile tire pressure monitoring sensor provided by the present invention;

[0026] Figure 2 is a cross-sectional view of a connecting rod in the present invention;

[0027] Figure 3 It is a structural schematic diagram of the installation tool provided by the present invention;

[0028] Figure 4 This is a schematic diagram of the structure of the frame-shaped base in the present invention. Figure 1 ;

[0029] Figure 5 This is a schematic diagram of the structure of the frame-shaped base in the present invention. Figure 2 ;

[0030] Figure 6 The structure diagram of the installation assembly of the installation tool and the automobile tire pressure monitoring sensor in the present invention is shown in FIG. Figure 1 ;

[0031] Figure 7 The structure diagram of the installation assembly of the installation tool and the automobile tire pressure monitoring sensor in the present invention is shown in FIG. Figure 2 ;

[0032] Figure 8The structure diagram of the installation tool of the present invention when installing the tire pressure monitoring sensor of the automobile tire Figure 1 ;

[0033] Fig. 9 The structure diagram of the installation tool of the present invention when installing the tire pressure monitoring sensor of the automobile tire Figure 2 .

[0034] In the figure:

[0035] 10. Wheel rim;

[0036] 100, sensor body; 200, connecting rod; 210, slot; 220, air hole; 300, valve stem; 310, limit platform; 320, connecting thread; 400, fastening nut; 500, dust cap; 600, hand-held rod; 610, U-shaped groove; 611, rounded corner; 620, connecting section; 621, connecting hole; 622, rivet; 700, frame base; 710, accommodating groove; 720, mounting groove; 721, mounting hole; 730, first avoidance slope; 740, second avoidance slope. DETAILED DESCRIPTION

[0037] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0038] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0040] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0041] Embodiments of the present invention are described in detail below, examples of which 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 intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0042] like Figure 1 and Figure 2 As shown, the present invention provides a tire pressure monitoring sensor for automobile tires, comprising a sensor body 100, a connecting rod 200, a valve stem 300 and a fastening nut 400. The connecting rod 200 is a cylindrical rod, one end of which is connected to the sensor body 100, and the outer wall of the connecting rod 200 is provided with two card slots 210, and the two card slots 210 are symmetrically arranged on both sides of the outer wall of the connecting rod 200; one end of the valve stem 300 is connected to the end of the connecting rod 200 away from the sensor body 100, and the end of the valve stem 300 close to the connecting rod 200 is provided with a limiting platform 310, and the outer wall of the valve stem 300 is provided with a connecting thread 320, and the connecting thread 320 is located on the side of the limiting platform 310 away from the connecting rod 200; the fastening nut 400 is screwed with the connecting thread 320, and the fastening nut 400 and the limiting platform 310 can clamp the wheel rim 10.

[0043] When installing the automobile tire pressure monitoring sensor provided by the present invention, the valve stem 300 is passed through the valve hole on the arc surface of the wheel rim 10, and the two grooves 210 on the outer wall of the connecting rod 200 are clamped using an installation tool, and then the fastening nut 400 is screwed with the connecting thread 320 on the valve stem 300, and the fastening nut 400 is tightened. The fastening nut 400 and the limit platform 310 clamp the wheel rim 10, and the installation tool can limit the rotation of the connecting rod 200, and can prevent the sensor body 100 from rotating due to the tightening torque of the fastening nut 400. The installation position accuracy of the sensor body 100 is good, and it can prevent the sensor body 100 from contacting and squeezing the arc surface of the wheel rim 10, causing the sensor shell to rupture and fail.

[0044] In some embodiments, the connecting rod 200 is provided with an air hole 220 along the axial direction, one end of the air hole 220 is communicated with the air passage of the valve stem 300, and the other end of the air hole 220 is communicated with the air passage of the sensor body 100, so that the air passage of the valve stem 300 is connected with the air passage of the sensor body 100 through the air hole 220 of the connecting rod 200. A dust cap 500 is detachably connected to one end of the valve stem 300 away from the connecting rod 200, and the dust cap 500 can prevent dust from entering the air passage of the valve stem 300.

[0045] Specifically, the diameter of the connecting rod 200 is 10 mm, the distance between the bottoms of the two slots 210 is 8 mm, and the width of the slots 210 is 2.8 mm.

[0046] like Figures 3 to 9 Shown and see Figure 1 and Figure 2 The present invention also provides an installation tool for installing the above-mentioned automobile tire pressure monitoring sensor, including a hand-held rod 600 and a frame-shaped base 700. Among them, one end of the hand-held rod 600 is provided with a U-shaped groove 610, and the U-shaped groove 610 is used to snap into the connecting rod 200. When the U-shaped groove 610 is snapped into the connecting rod 200, one groove wall of the U-shaped groove 610 is snapped into one snapping groove 210, and the other groove wall of the U-shaped groove 610 is snapped into another snapping groove 210; the frame-shaped base 700 is connected to one end of the hand-held rod 600 with the U-shaped groove 610.

[0047] The installation tool provided by the present invention inserts the connecting rod 200 into the U-shaped groove 610, and the hand holds the hand-held rod 600. The hand-held rod 600 limits the rotation of the connecting rod 200 through the U-shaped groove 610, thereby limiting the rotation of the sensor body 100, and can prevent the sensor body 100 from rotating due to the tightening torque of the fastening nut 400. The installation position accuracy of the sensor body 100 is good, and can prevent the sensor body 100 from contacting and squeezing the arc surface of the wheel rim 10, causing the sensor housing to rupture and fail.

[0048] In some embodiments, a receiving groove 710 is provided at the bottom of the frame-shaped base 700, and the receiving groove 710 is used to receive the sensor body 100. By receiving the sensor body 100 in the receiving groove 710, the receiving groove 710 can provide a certain protection for the sensor body 100. A mounting groove 720 is provided at the top of the frame-shaped base 700, and a mounting hole 721 is provided at the bottom of the mounting groove 720. The hand-held rod 600 is provided with a connecting section 620, and the connecting section 620 is inserted into the mounting groove 720. The connecting section 620 is provided with a connecting hole 621 aligned with the mounting hole 721. The rivet 622 passes through the connecting hole 621 and the mounting hole 721 to rivet the connecting section 620 and the mounting groove 720, thereby realizing the connection between the hand-held rod 600 and the frame-shaped base 700. Exemplarily, the number of the mounting holes 721 is at least two, and the number of the connecting holes 621 is the same as the number of the mounting holes 721.

[0049] The bottom of the frame-shaped base 700 is provided with a first avoidance slope 730, and the first avoidance slope 730 is provided to prevent the bottom of the frame-shaped base 700 from interfering with the wheel rim 10 during installation. The side wall of the frame-shaped base 700 close to the U-shaped groove 610 is provided with a second avoidance slope 740, and the side wall of the frame-shaped base 700 is provided with a second avoidance slope 740, and the side wall of the frame-shaped base 700 is prevented from interfering with the wheel rim 10 during installation. The opening of the U-shaped groove 610 is provided with a rounded corner 611, which is conducive to smoothly inserting the slot 210 of the connecting rod 200 into the U-shaped groove 610.

[0050] Specifically, the hand-held rod 600 is made of steel, the thickness of the hand-held rod 600 is 2 mm, the width of the hand-held rod 600 is 20 mm, and the length of the hand-held rod 600 is above 120 mm. The height of the U-shaped groove 610 is 11 mm, and the width of the U-shaped groove 610 is 8 mm, which ensures that the card slot 210 of the connecting rod 200 is smoothly inserted into the U-shaped groove 610. The opening of the U-shaped groove 610 is designed to be a fillet 611 with a specification of R2, so that the U-shaped groove 610 has an eight-shaped opening structure, and the eight-shaped opening is conducive to the card slot 210 of the connecting rod 200 being smoothly inserted into the U-shaped groove 610. The bottom of the U-shaped groove 610 is provided with two chamfers. In order to accommodate the installation of sensors of more specifications and sizes during installation, preferably, the size of the chamfer is smaller than the fillet 611 at the opening of the U-shaped groove 610. The frame-shaped base 700 is made of engineering plastics with an overall thickness of 5mm. The top of the frame-shaped base 700 is a 20mm×56mm rectangle. A 20mm×20mm square installation groove 720 is dug in the center of the rectangle. The depth of the installation groove 720 is 2mm, which is just enough to insert the connecting section 620 of the hand-held rod 600. Two installation holes 721 are designed in the middle of the square installation groove 720. Two rivets 622 are passed through the installation holes 721 and the connecting holes 621 to rivet the hand-held rod 600 and the frame-shaped base 700 together to form an installation tool. The bottom end of the frame-shaped base 700 away from the U-shaped groove 610 is designed to be an arc angle, and the arc angle is closer to the surface of the wheel rim 10 during installation. During installation, if the installation tool rotates as a whole due to excessive torque, the arc corner of the frame base 700 will first contact the surface of the wheel rim 10, limiting the rotation of the frame base 700 and also limiting further rotation of the sensor body 100, preventing the sensor body 100 from contacting the wheel rim 10, thereby protecting the sensor body 100 from damage.

[0051] The working principle of the installation tool provided by the present invention is as follows:

[0052] Pick up the installation tool with your left hand, with the U-shaped groove 610 facing the operator, pick up the automobile tire pressure monitoring sensor with your right hand, and insert the slot 210 of the connecting rod 200 into the U-shaped groove 610; use your left fingers to support the sensor body 100, hold the installation tool and the installation combination of the automobile tire pressure monitoring sensor with your left hand, and pass the valve stem 300 through the valve hole on the arc surface of the wheel rim 10, adjust the position of the sensor body 100 so that the sensor body 100 is just tangent to the arc surface of the wheel rim 10 and is not skewed, maintain the adjusted position, pre-tighten the fastening nut 400 with your right hand, and then use an air gun to tighten the fastening nut 400 to the specified torque, pull out the installation tool upwards, and the installation is complete.

[0053] During the whole process of installing the tire pressure monitoring sensor for automobiles, the left hand always holds the handle 600, and the left hand fingers keep the sensor body 100 still, so as to maintain a reasonable installation position. During the whole installation process, the slot 210 of the connecting rod 200 is inserted into the U-shaped slot 610 and does not move, so as to prevent the sensor body 100 from rotating due to the tightening torque of the fastening nut 400. The installation position accuracy of the sensor body 100 is good. Even if the sensor body 100 rotates slightly during the installation process, the frame-shaped base 700 can first contact the surface of the wheel rim 10, which plays a role in positioning and protection.

[0054] The standard parts used in the present invention can all be purchased from the market, and the special-shaped parts can all be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt mature means in the prior art, and the machinery, parts and equipment adopt conventional models in the prior art. The circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0055] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A tire pressure monitoring sensor for automobiles, characterized in that: include: Sensor body; A connecting rod, wherein the connecting rod is a cylindrical rod, one end of which is connected to the sensor body, and the outer wall of the connecting rod is provided with two slots, which are symmetrically arranged on both sides of the outer wall of the connecting rod; A valve stem, one end of which is connected to an end of the connecting rod away from the sensor body, a limiting platform is provided at one end of the valve stem close to the connecting rod, and a connecting thread is provided on the outer wall of the valve stem, and the connecting thread is located on a side of the limiting platform away from the connecting rod; A fastening nut is threadedly connected to the connecting thread, and the fastening nut and the limiting platform can clamp the wheel rim.

2. The automobile tire pressure monitoring sensor according to claim 1, characterized in that: The connecting rod is provided with an air hole along the axial direction, one end of the air hole is communicated with the air passage of the valve stem, and the other end of the air hole is communicated with the air passage of the sensor body.

3. The automobile tire pressure monitoring sensor according to claim 1, characterized in that: One end of the valve stem away from the connecting rod is detachably connected with a dust cap.

4. The automobile tire pressure monitoring sensor according to claim 1, characterized in that: The diameter of the connecting rod is 10 mm, the distance between the bottoms of the two slots is 8 mm, and the width of the slots is 2.8 mm.

5. An installation tool for installing the automobile tire pressure monitoring sensor according to any one of claims 1 to 4, characterized in that: include: A hand-held rod, one end of which is provided with a U-shaped groove, the U-shaped groove is used to snap into the connecting rod, when the U-shaped groove is snapped into the connecting rod, one groove wall of the U-shaped groove snaps into one of the snapping grooves, and the other groove wall of the U-shaped groove snaps into the other of the snapping grooves; A frame-shaped base is connected to one end of the hand-held rod having the U-shaped groove.

6. The installation tool according to claim 5, characterized in that: The bottom of the frame-shaped base is provided with a receiving groove, and the receiving groove is used to receive the sensor body.

7. The installation tool according to claim 5, characterized in that: A mounting groove is provided on the top of the frame-shaped base, a mounting hole is provided at the bottom of the mounting groove, a connecting section is provided on the hand-held rod, the connecting section is inserted into the mounting groove, a connecting hole is provided on the connecting section that is aligned with the mounting hole, and a rivet passes through the connecting hole and the mounting hole to rivet the connecting section and the mounting groove.

8. The installation tool according to claim 5, characterized in that: The bottom of the frame-shaped base is provided with a first avoidance slope.

9. The installation tool according to claim 5, characterized in that: A second avoidance slope is formed on a side wall of the frame-shaped base close to the U-shaped groove.

10. The installation tool according to claim 5, characterized in that: The opening of the U-shaped groove is provided with a rounded corner.

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