Automobile hub unit with temperature sensing recognition function

Abstract

The utility model discloses an automobile hub unit with a temperature sensing and identifying function, which comprises a hub bearing inner ring, and balls and an outer ring are arranged on the hub bearing inner ring. An annular groove is formed in the outer wall of the outer ring and sleeved with a heat conduction ring, a sensor installation groove is further formed outside the annular groove, a temperature sensor is installed in the sensor installation groove, and an induction head of the temperature sensor is tightly attached to the heat conduction ring. The annular groove is provided with a plurality of through holes, the through holes penetrate through a gap between the inner ring and the outer ring of the hub bearing, heat conduction rods are arranged in the through holes, and the head ends of the heat conduction rods extend to the gap between the inner ring and the outer ring of the hub bearing; during use, the heat conduction rods extend into an internal gap between an inner ring and an outer ring of a hub bearing, the heat conduction rods can uniformly conduct the temperature in the gap, and the temperature is conducted to the inductive head through the heat conduction ring, so that when high temperature is generated at each part of the rolling gap, the high temperature can be conducted to the inductive head, and the temperature sensor transmits temperature information to the identification unit; and carrying out precision temperature sensing identification.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts technology, specifically relating to an automotive wheel hub unit with temperature sensing and recognition function. Background Technology

[0002] An automotive wheel hub unit is the component that connects the wheel and the axle. It is mainly connected to the wheel rim by bolts or pins, providing central support for the wheel. The main functions of the wheel hub unit are to bear weight and provide precise guidance for the rotation of the wheel hub, bearing both axial and radial loads.

[0003] Temperature monitoring of automotive wheel hubs is essential. During driving, automotive wheel hubs endure tremendous friction and pressure, especially at high speeds or during prolonged braking. Overheating of the wheel hubs not only affects vehicle stability but can also degrade braking system performance, increase braking distance, and impair vehicle handling. Therefore, temperature monitoring of automotive wheel hubs is crucial.

[0004] Chinese patent document CN217622966U discloses a hub unit with a life warning function. It discloses that a sealing cover 9 is fastened to the rear end of the spindle 1, inner ring 2 and outer ring 3. A multi-functional sensor 10 is fixed on the outer wall of the sealing cover 9. A temperature sensor 11 and a vibration sensor 12 are fixed on the outer wall of the outer ring 3. The temperature sensor 11 monitors the temperature of the hub unit in real time.

[0005] However, the temperature sensor mentioned above can only detect the outer edge of the wheel hub unit, while the hottest part of the car wheel hub unit is mainly located in the gap between the rolling steel balls between the inner and outer rings, resulting in low temperature monitoring accuracy. Utility Model Content

[0006] This invention provides an automotive wheel hub unit with temperature sensing and recognition function. The heat-conducting rods extend into the internal gap between the inner and outer rings of the wheel hub bearing. Multiple heat-conducting rods will evenly conduct the temperature within the gap and conduct it to the sensing head through the heat-conducting ring. Thus, when high temperature is generated at each point in the rolling gap, it will be conducted to the sensing head. The temperature sensor transmits the temperature information to the recognition unit for accurate temperature sensing and recognition, thereby solving the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a car wheel hub unit with temperature sensing and recognition function, including a wheel hub bearing inner ring, on which ball bearings and an outer ring are provided, the ball bearings being mounted in the gap between the inner and outer rings via a cage, and a sealing ring being provided in the external gap between the inner and outer rings; an annular groove is provided on the outer wall of the outer ring, a heat-conducting ring is fitted on the annular groove, and a sensor mounting groove is also provided outside the annular groove, on which a temperature sensor is mounted, and the sensing head of the temperature sensor is in close contact with the heat-conducting ring.

[0008] Preferably, the width of the sensor mounting groove is greater than the width of the annular groove.

[0009] Preferably, the annular groove has multiple through holes around the center of the outer ring, the through holes passing through the gap between the inner ring and the outer ring of the wheel hub bearing, the cross-section of the through holes is T-shaped, and a heat-conducting rod is installed in the through holes, the head end of the heat-conducting rod extending into the gap between the inner ring and the outer ring of the wheel hub bearing.

[0010] Preferably, the heat-conducting ring is integrally formed, and one side is a disconnected structure.

[0011] Preferably, the heat-conducting ring is provided with a mounting part at the break point, and the two corresponding mounting parts are fixed by fastening screws.

[0012] Preferably, an outer annular groove with a width greater than that of the sensor mounting groove is provided outside the annular groove, and an elastic sealing ring is installed inside the outer annular groove.

[0013] Preferably, the elastic sealing ring has a hole through which the temperature sensor circuitry passes.

[0014] Preferably, the elastic sealing ring has multiple rings, and each ring has a wavy protrusion on its contact surface, with adjacent protrusions arranged opposite each other.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The heat-conducting rods extend into the internal gap between the inner and outer rings of the wheel hub bearing. Multiple heat-conducting rods will evenly conduct the temperature within the gap and conduct it to the sensing head through the heat-conducting ring. Thus, when high temperature is generated at any point in the rolling gap, it will be conducted to the sensing head. The temperature sensor transmits the temperature information to the recognition unit for accurate temperature sensing and recognition.

[0017] 2. During temperature monitoring, the sensing head is arranged in a ring with one-piece connection, which can conduct heat to the heat conduction rod at each point, making the temperature monitoring range wider. Attached Figure Description

[0018] Figure 1This is a schematic diagram of the front sectional view of the present invention;

[0019] Figure 2 This is an enlarged structural diagram of point A in this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the heat-conducting ring, temperature sensor, and heat-conducting rod of this utility model;

[0021] Figure 4 This is a schematic diagram of the heat-conducting ring and mounting part of this utility model;

[0022] Figure 5 This is a cross-sectional view of the elastic sealing ring and the raised section of this utility model.

[0023] In the diagram: 1. Inner ring of hub bearing; 2. Ball; 3. Outer ring; 4. Sealing ring; 5. Annular groove; 6. Heat-conducting ring; 7. Sensor mounting groove; 8. Temperature sensor; 9. Sensing head; 10. Heat-conducting rod; 11. Mounting part; 12. Outer ring groove; 13. Elastic sealing ring; 14. Hole; 15. Protrusion. Detailed Implementation

[0024] 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.

[0025] Please see Figure 1-5 This utility model provides an automotive wheel hub unit with temperature sensing and recognition function, including a wheel hub bearing inner ring 1, on which ball bearings 2 and an outer ring 3 are provided. The ball bearings 2 are mounted in the gap between the inner ring 1 and the outer ring 3 by a retainer. A sealing ring 4 is provided in the external gap between the inner ring 1 and the outer ring 3. The outer wall of the outer ring 3 is provided with an annular groove 5, on which a heat-conducting ring 6 is fitted. A sensor mounting groove 7 is also provided outside the annular groove 5, on which a temperature sensor 8 is installed. The sensing head 9 of the temperature sensor 8 is in close contact with the heat-conducting ring 6. By setting the heat-conducting ring 6, the heat inside the outer ring 3 can be conducted, increasing the temperature monitoring range.

[0026] Specifically, the width of the sensor mounting groove 7 is greater than the width of the annular groove 5; in this embodiment, the installation of the temperature sensor 8 in the sensor mounting groove 7 does not affect the installation and removal of the heat-conducting ring 6.

[0027] Specifically, the annular groove 5 has multiple through holes around the center of the outer ring 3. The through holes pass through the gap between the inner ring 1 and the outer ring 3 of the wheel hub bearing. The cross-section of the through holes is T-shaped. A heat-conducting rod 10 is installed inside the through holes. The head of the heat-conducting rod 10 extends into the gap between the inner ring 1 and the outer ring 3 of the wheel hub bearing. In this embodiment, the heat-conducting rod 10 extends into the internal gap between the inner ring 1 and the outer ring 3 of the wheel hub bearing. When the inner ring 1 of the wheel hub bearing rotates, the rolling friction of the balls 2 generates high heat. Since both the heat-conducting ring 6 and the heat-conducting rod 10 are made of good thermal conductivity materials, the multiple heat-conducting rods 10 will evenly conduct the temperature in the gap and conduct it to the sensing head 9 through the heat-conducting ring 6. The sensing head 9 will contact the multiple heat-conducting rods 10, so that when high temperature is generated at each point in the rolling gap, it will be conducted to the sensing head 9. The temperature sensor 8 transmits the temperature information to the recognition unit for accurate sensing and recognition.

[0028] Specifically, the heat-conducting ring 6 is integrally formed, and one side is disconnected. In this embodiment, during temperature monitoring, the sensing head 9 is an integrally connected ring arrangement, which can conduct heat to each heat-conducting rod 10, making the temperature monitoring range wider. The disconnection on one side makes it easy to open and install / remove in the annular groove 5.

[0029] Specifically, the heat-conducting ring 6 is provided with a mounting part 11 at the break point, and the two corresponding mounting parts 11 are fixed by fastening screws; in this embodiment, the heat-conducting ring 6 is tightly installed on the annular groove 5, and after installation, it is fixed by the mounting part 11 in conjunction with the fastening screws.

[0030] Specifically, an outer annular groove 12 with a width greater than that of the sensor mounting groove 7 is provided outside the annular groove 5, and an elastic sealing ring 13 is installed inside the outer annular groove 12; in this embodiment, the heat-conducting ring 6 and the temperature sensor 8 are sealed and insulated, thereby improving the monitoring accuracy.

[0031] Specifically, the elastic sealing ring 13 is provided with a hole 14 through which the circuit of the temperature sensor 8 passes; in this embodiment, it is convenient for the temperature sensor 8 to lead out a circuit through the hole 14 and connect to the external power supply.

[0032] Specifically, the elastic sealing ring 13 has multiple rings, and each ring has a wavy protrusion 15 on its tightly fitting surface, with adjacent protrusions 15 arranged opposite to each other. In this embodiment, the tight-fitting design of the wavy protrusions 15 reduces the contact area of ​​each layer, thus forming multiple layers of heat insulation.

[0033] In order to facilitate understanding of the above technical solutions of the present invention, the working principle or operation method of the present invention in actual process is described in detail below.

[0034] Working principle: During operation, the inner ring 1 of the wheel hub bearing rotates with the wheel hub, while the outer ring 3 is mounted on the frame. The temperature sensor 8 detects the temperature of the heat-conducting ring 6 by closely contacting it with the sensing head 9. The heat-conducting rod 10 extends into the internal gap between the inner ring 1 and the outer ring 3 of the wheel hub bearing. When the inner ring 1 of the wheel hub bearing rotates, the rolling friction of the balls 2 generates high heat. Since both the heat-conducting ring 6 and the heat-conducting rod 10 are made of good thermal conductivity materials, the multiple heat-conducting rods 10 will evenly conduct the temperature within the gap and conduct it to the sensing head 9 via the heat-conducting ring 6. The sensing head 9 will contact the multiple heat-conducting rods 10, so that when high temperatures are generated at each point in the rolling gap, they will be conducted to the sensing head 9. The temperature sensor 8 transmits the temperature information to the recognition unit for accurate sensing and recognition. Furthermore, during temperature monitoring, the sensing head 9 is arranged in an integrated ring, which can conduct heat to each heat-conducting rod 10, making the temperature monitoring range wider.

[0035] 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 car wheel hub unit with temperature sensing and recognition function, characterized in that, The device includes an inner ring (1) of a hub bearing, on which ball bearings (2) and an outer ring (3) are provided. The ball bearings (2) are mounted in the gap between the inner ring (1) and the outer ring (3) of the hub bearing through a cage. A sealing ring (4) is provided in the external gap between the inner ring (1) and the outer ring (3). An annular groove (5) is provided on the outer wall of the outer ring (3). A heat-conducting ring (6) is fitted on the annular groove (5). A sensor mounting groove (7) is also provided outside the annular groove (5). A temperature sensor (8) is installed in the sensor mounting groove (7). The sensing head (9) of the temperature sensor (8) is in close contact with the heat-conducting ring (6).

2. The automotive wheel hub unit with temperature sensing and recognition function according to claim 1, characterized in that, The width of the sensor mounting groove (7) is greater than the width of the annular groove (5).

3. The automotive wheel hub unit with temperature sensing and recognition function according to claim 1, characterized in that, The annular groove (5) is provided with multiple through holes around the center of the outer ring (3). The through holes pass through the gap between the inner ring (1) and the outer ring (3) of the wheel hub bearing. The cross-section of the through hole is T-shaped. A heat-conducting rod (10) is installed in the through hole. The head end of the heat-conducting rod (10) extends to the gap between the inner ring (1) and the outer ring (3) of the wheel hub bearing.

4. A car wheel hub unit with temperature sensing and recognition function according to claim 1, characterized in that, The heat-conducting ring (6) is integrally formed, and one side is disconnected.

5. A car wheel hub unit with temperature sensing and recognition function according to claim 4, characterized in that, The heat-conducting ring (6) is provided with a mounting part (11) at the break point, and the two corresponding mounting parts (11) are fixed by fastening screws.

6. A car wheel hub unit with temperature sensing and recognition function according to claim 1, characterized in that, The annular groove (5) is further provided with an outer annular groove (12) with a width greater than that of the sensor mounting groove (7), and an elastic sealing ring (13) is installed in the outer annular groove (12).

7. A car wheel hub unit with temperature sensing and recognition function according to claim 6, characterized in that, The elastic sealing ring (13) is provided with a hole (14) through which the circuit of the temperature sensor (8) passes.

8. A car wheel hub unit with temperature sensing and recognition function according to claim 6, characterized in that, The elastic sealing ring (13) has multiple rings, and each ring has a wavy protrusion (15) on its surface, with adjacent protrusions (15) arranged opposite each other.

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