Tire wear detection device and vehicle

Abstract

The utility model provides a tire wear detection device and a vehicle. The tire wear detection device comprises a driving mechanism, a linear transmission mechanism and a detection mechanism, the driving mechanism is connected with the input end of the linear transmission mechanism; the detection mechanism comprises a shell, a contact piece and a proximity switch; the shell is connected with the output end of the linear transmission mechanism; the sensing end of the contact piece is matched with a proximity switch arranged in the shell in the first direction, and the detection end of the contact piece is used for being matched with a tire; the detection mechanism has a first detection state and a second detection state; in the first detection state, the detection end is used for being matched with a surface protrusion of a tire, and a first distance is formed between the induction end and the proximity switch. In the second detection state, the detection end is used for being matched with a surface groove of the tire, a second distance is formed between the sensing end and the proximity switch, and the second distance is larger than the first distance. The tire wear detection device provided by the utility model can detect the wear condition of the tire without being embedded in the tire, so that the structural strength of the tire is ensured.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a tire wear detection device and a vehicle. Background Art

[0002] With the development of economy and the continuous improvement of people's living standards, vehicles have become a common means of transportation in people's daily life. Among them, tires are high-speed rotating wear parts, which are key components in vehicles and need to be replaced in time after wear. When vehicles are driving, especially under complex road conditions, tires may produce abnormal wear and uneven wear, which will reduce tire life and cause driving vibration. More seriously, tire blowouts may occur, leading to traffic accidents. Therefore, tire wear detection tests are particularly important.

[0003] Existing tire wear detection devices require the implantation of sensors, circuits and other structures inside the tire, which will destroy the structural strength of the tire and bring safety hazards to the vehicle. Utility Model Content

[0004] The present application provides a tire wear detection device and a vehicle, which can detect tire wear conditions while maintaining the original structural strength of the tire.

[0005] Specifically, the present application is implemented through the following technical solutions:

[0006] On one hand, the present application provides a tire wear detection device, including: a driving mechanism, a linear transmission mechanism and a detection mechanism;

[0007] The driving mechanism is connected to the input end of the linear transmission mechanism;

[0008] The detection mechanism comprises a housing, a contact member and a proximity switch; the housing is connected to the output end of the linear transmission mechanism; the contact member is disposed on the housing so as to be reciprocatingly movable along a first direction; the contact member comprises a sensing end and a detection end, the sensing end cooperates with the proximity switch disposed in the housing in the first direction, and the detection end can extend out of the housing to cooperate with the tire;

[0009] The detection mechanism has a first detection state and a second detection state; in the first detection state, the detection end is used to cooperate with the surface protrusion of the tire, and a first distance is formed between the sensing end and the proximity switch; in the second detection state, the detection end is used to cooperate with the surface groove of the tire, and a second distance is formed between the sensing end and the proximity switch, and the second distance is greater than the first distance.

[0010] Optionally, the detection mechanism further includes an elastic adjustment component disposed in the housing, and the proximity switch is mounted on the elastic adjustment component; and a deformation direction of the elastic adjustment component is the same as the first direction.

[0011] Optionally, the elastic adjustment component includes an elastic member and an adjustment rod; one end of the elastic member is connected to the shell, and the other end of the elastic member is connected to the adjustment rod; the proximity switch is installed at one end of the adjustment rod facing away from the elastic member.

[0012] Optionally, the detection mechanism further includes a spring sleeved on the outer circumference of the contact member; the contact member is provided with a first limiting portion, the housing is provided with a second limiting portion, and both ends of the spring are respectively abutted against the first limiting portion and the second limiting portion.

[0013] Optionally, the size of the detection end is larger than the size of the sensing end, and the detection end is designed as the first limiting portion.

[0014] Optionally, the second limiting portion is a limiting rib extending inwardly from the inner wall of the shell.

[0015] Optionally, the shell includes a bottom wall and a side wall; the bottom wall is penetrated by an opening for the detection end to pass through; the side wall extends upward and gradually outward from the bottom wall.

[0016] Optionally, the tire wear detection device further includes a controller and an alarm, and the controller is connected to the proximity switch and the alarm respectively.

[0017] Optionally, the linear transmission mechanism includes a ball screw and a nut that cooperate with each other; the ball screw is designed as the input end, and the nut is designed as the output end.

[0018] On the other hand, the present application further provides a vehicle, comprising a wheel arch and a tire, wherein the wheel arch is equipped with any of the tire wear detection devices described above.

[0019] The technical solution provided by this application can achieve the following beneficial effects:

[0020] The present application provides a tire wear detection device and a vehicle, which can detect the wear of the tire without being embedded in the tire, thereby ensuring the original structural strength of the tire. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a tire wear detection device in a second detection state shown in an exemplary embodiment of the present application.

[0022] Figure 2It is another structural schematic diagram of a tire wear detection device in a second detection state shown in an exemplary embodiment of the present application.

[0023] Figure 3 It is another structural schematic diagram of a tire wear detection device in a second detection state shown in an exemplary embodiment of the present application.

[0024] Figure 4 It is an electronic control logic diagram of a tire wear detection device shown in an exemplary embodiment of the present application.

[0025] Figure numerals: 1. tire wear detection device; 10. driving mechanism; 11. linear transmission mechanism; 111. ball screw; 112. nut; 12. detection mechanism; 121. shell; 1211. bottom wall; 1212. side wall; 1213. second limit portion; 122. contact member; 1221. sensing end; 1222. detection end; 123. proximity switch; 124. elastic adjustment member; 1241. elastic member; 1242. adjustment rod; 125. spring; 13. mounting member; 14. controller; 15. alarm; 2. tire; 21. surface protrusion; 22. surface groove; d1. second distance. DETAILED DESCRIPTION

[0026] The technical solution of the present application will be described in detail below in conjunction with the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0027] If there are terms involving directional indications or positional relationships in the embodiments of the present application (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings); if the specific posture changes, the directional indication or positional relationship will also change accordingly. In addition, the terms "first", "second", etc. involved in the embodiments of the present application are only used for the purpose of convenience of description and cannot be understood as indicating or implying relative importance.

[0028] See also Figures 1 to 3 The present application provides a tire wear detection device 1, comprising: a driving mechanism 10, a linear transmission mechanism 11 and a detection mechanism 12. The driving mechanism 10 is connected to an input end of the linear transmission mechanism 11.

[0029] The detection mechanism 12 includes a shell 121, a contact member 122 and a proximity switch 123; the shell 121 is connected to the output end of the linear transmission mechanism 11; the contact member 122 is reciprocatably arranged in the shell 121 along a first direction; the contact member 122 includes a sensing end 1221 and a detection end 1222, the sensing end 1221 cooperates with the proximity switch 123 arranged in the shell 121 in the first direction, and the detection end 1222 can extend out of the shell 121 for cooperation with the tire 2.

[0030] The detection mechanism 12 has a first detection state and a second detection state; in the first detection state, the detection end 1222 is used to cooperate with the surface protrusion 21 of the tire 2, and a first distance (not shown) is formed between the sensing end 1221 and the proximity switch 123; in the second detection state, the detection end 1222 is used to cooperate with the surface groove 22 of the tire 2, and a second distance d1 is formed between the sensing end 1221 and the proximity switch 123, and the second distance d1 is greater than the first distance.

[0031] Generally, the outer surface of the tire 2 is formed with a plurality of grooves sunken toward the center. When the distance between the protrusion on the outer surface of the tire 2 and the bottom wall of the groove is not less than a preset threshold value, such as 16 mm, it indicates that the tire 2 is in a normal state. When it is less than a preset threshold value, such as 16 mm, it indicates that the tire 2 is seriously worn and needs to be replaced in time to avoid driving vibration, tire blowout and other safety hazards caused by excessive wear of the tire 2.

[0032] The tire wear detection device 1 provided in the present application uses a driving mechanism 10 to drive a linear transmission mechanism 11 to drive a detection mechanism 12 to move horizontally, so as to cooperate with the outer surface of the tire 2 on the outside of the tire 2. When the difference between the second distance d1 and the first distance is detected to be not less than a preset threshold, it indicates that the tire 2 is in a normal state. When the difference between the second distance d1 and the first distance is detected to be lower than the preset threshold, it indicates that the tire 2 is seriously worn. Compared with traditional detection devices, there is no need to implant sensors, circuits and other structures inside the tire 2, and the original structural strength of the tire 2 is not destroyed. The wear of the tire 2 can be detected without destroying it, which improves the safety performance of the tire 2 and facilitates the regular inspection, maintenance or replacement of the tire wear detection device 1 in the later stage.

[0033] Exemplarily, the proximity switch 123 can use a sensor to achieve non-contact distance detection. For example, the proximity switch 123 can use an existing inductive sensor, and the contact 122 is a metal contact 122. For another example, the proximity switch 123 can also use an existing capacitive sensor, and the contact 122 can be a metal contact 122 or a non-metal contact 122. Of course, the sensor selection of the proximity switch 123 is not limited to this.

[0034] It should be noted that when the tire wear detection device 1 cooperates with the tire 2, the first direction refers to the direction in which the grooves and / or protrusions on the surface of the tire 2 extend radially of the tire 2. Relative to the vehicle, the first direction refers to the height direction of the vehicle.

[0035] See also Figure 1 In one embodiment, the housing 121 includes a bottom wall 1211 and a side wall 1212 ; the bottom wall 1211 is penetrated by an opening for the detection end 1222 to pass through; the side wall 1212 extends upward and gradually outward from the bottom wall 1211 .

[0036] Before the vehicle is driven, the detection mechanism 12 needs to be moved to a position where it does not interfere with the tire 2 to avoid affecting the rotation of the tire 2 during the driving of the vehicle. After the vehicle stops or before the vehicle starts, if it is necessary to detect the wear of the tire 2, it is necessary to control the detection mechanism 12 to move to a position in contact with the tire 2 to facilitate subsequent wear detection of the tire 2. In the present application, by designing the side wall 1212 of the shell 121 as an inclined surface, when the detection mechanism 12 gradually moves toward the direction close to the tire 2, the inclined side wall 1212 on the shell 121 can play a guiding role to ensure that the tire wear detection device 1 can be smoothly moved to the surface of the tire 2 and contact the surface of the tire 2, avoiding the right-angle design between the side wall 1212 and the bottom wall 1211, which may cause jamming and difficulty in moving during the movement of the tire wear detection device 1.

[0037] See also Figure 2 In one embodiment, the detection mechanism 12 further includes an elastic adjustment component 124 disposed in the housing 121, and the proximity switch 123 is mounted on the elastic adjustment component 124; the deformation direction of the elastic adjustment component 124 is the same as the first direction. Thus, when the amplitude of the reciprocating movement of the contact member 122 along the first direction is large, the elastic adjustment component 124 can adjust the position of the proximity switch 123 by its own elastic deformation to avoid the proximity switch 123 and the contact member 122 from being in rigid contact and being damaged. Exemplarily, the elastic adjustment component 124 can be a tension spring 125, an elastic block made of rubber material, and the like.

[0038] See also Figure 3In one embodiment, the elastic adjustment component 124 includes an elastic member 1241 and an adjustment rod 1242; one end of the elastic member 1241 is connected to the housing 121, and the other end of the elastic member 1241 is connected to the adjustment rod 1242; the proximity switch 123 is installed at the end of the adjustment rod 1242 facing away from the elastic member 1241. Therefore, by adding the adjustment rod 1242 between the elastic member 1241 and the proximity switch 123 and installing the proximity switch 123 on the adjustment rod 1242, the installation stability of the contact switch can be improved.

[0039] Please continue reading Figure 2 and Figure 3 In one embodiment, the detection mechanism 12 further includes a spring 125 sleeved on the outer periphery of the contact member 122; the contact member 122 is provided with a first limiting portion, the housing 121 is provided with a second limiting portion 1213, and the two ends of the spring 125 are respectively in contact with the first limiting portion and the second limiting portion 1213. In this way, the stability of the reciprocating movement of the contact member 122 can be ensured. Exemplarily, when the contact member 122 moves from the surface groove 22 of the tire 2 to the surface protrusion 21 of the tire 2, the contact member 122 gradually moves upward along the first direction, and the spring 125 is gradually compressed. When the contact member 122 moves from the surface protrusion 21 of the tire 2 to the surface groove 22 of the tire 2, the contact member 122 gradually moves downward along the first direction, and the spring 125 gradually returns to its initial state.

[0040] In one embodiment, the size of the detection end 1222 is larger than the size of the sensing end 1221, and the detection end 1222 is designed as the first limiting portion. As a result, the spring 125 can be inserted from the smaller sensing end 1221 and abut against the larger detection end 1222, and the structure is simple. Exemplarily, the detection end 1222 has a triangular structure, and the sensing end 1221 has a rectangular structure. In the first detection state, the vertex of the triangular structure cooperates with the surface protrusion 21 of the tire 2; in the second detection state, the hypotenuses of the triangular structure on both sides of the endpoint cooperate with the groove edge or the groove bottom wall of the tire 2. Of course, in other examples, the detection end 1222 may also have a rectangular structure, and the size of the rectangular structure of the detection end 1222 is larger than the size of the rectangular structure of the sensing end 1221.

[0041] Please continue reading Figure 2 In one embodiment, the second limiting portion 1213 is a limiting rib extending inward from the inner wall of the housing 121. Thus, it is convenient to form an integral part, and there is no need to install the second limiting portion 1213 in the housing 121, thereby reducing the assembly cost.

[0042] See also Figure 4In one embodiment, the tire wear detection device 1 further includes a controller 14 and an alarm 15, and the controller 14 is connected to the proximity switch 123 and the alarm 15, respectively. Thus, when the controller 14 monitors that the difference between the second distance d1 and the first distance is less than a preset threshold value, such as 16 mm, the alarm 15 is controlled to alarm, reminding the user to replace the tire 2 in time. Exemplarily, the alarm 15 can be installed in the cockpit of the vehicle; the controller 14 can be installed near the drive mechanism 10, located outside the vehicle, or the controller 14 can be integrated into the center console of the vehicle.

[0043] In one embodiment, the controller 14 is also connected to the driving mechanism 10, so that after completing the detection of a certain surface protrusion 21 or surface groove 22 of the tire 2, the driving mechanism 10 is automatically controlled to drive the linear transmission mechanism 11 to drive the detection mechanism 12 to move left or right to detect the next groove or protrusion. Exemplarily, the driving mechanism 10 can be a driving motor. Of course, in other examples, the driving motor can also be a cylinder.

[0044] In one embodiment, the linear transmission mechanism 11 includes a ball screw 111 and a nut 112 that cooperate with each other; the ball screw 111 is designed as the input end, and the nut 112 is designed as the output end. Therefore, through the cooperation of the ball screw 111 and the nut 112, a lower friction coefficient is provided, and the transmission efficiency of the linear transmission mechanism 11 can be improved. Of course, the selection of the linear transmission mechanism 11 is not limited to this.

[0045] On the other hand, the present application also provides a vehicle, including a wheel arch and a tire 2, wherein the wheel arch is equipped with a tire wear detection device 1 as described above. The tire wear detection device 1 provided in the present application has a simple design principle and strong adaptability, and is suitable for installation on the wheel arches of various models, and does not rely on a specific tire 2 brand or model, which provides convenience for wide promotion.

[0046] like Figure 1 As shown, in one embodiment, the tire wear detection device 1 further includes a mounting member 13 for mounting the linear drive mechanism 10 on the wheel eyebrow. Exemplarily, the mounting member 13 is a mounting rail, which is horizontally mounted on the side of the wheel eyebrow facing the tire 2 along the length direction of the vehicle (not shown), and the nut 112 is slidably mounted on the mounting rail. In this way, the tire wear detection device 1 can be installed and the nut 112 can be prevented from flipping. Of course, the selection of the mounting member 13 is not limited to this.

[0047] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without causing conflicts. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the drawings; all modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this application should be included in the scope of protection of this application.

Claims

1. A tire wear detection device, characterized in that: include: Driving mechanism, linear transmission mechanism and detection mechanism; The driving mechanism is connected to the input end of the linear transmission mechanism; The detection mechanism comprises a housing, a contact member and a proximity switch; the housing is connected to the output end of the linear transmission mechanism; the contact member is disposed on the housing so as to be reciprocatingly movable along a first direction; the contact member comprises a sensing end and a detection end, the sensing end cooperates with the proximity switch disposed in the housing in the first direction, and the detection end can extend out of the housing to cooperate with the tire; The detection mechanism has a first detection state and a second detection state; in the first detection state, the detection end is used to cooperate with the surface protrusion of the tire, and a first distance is formed between the sensing end and the proximity switch; In the second detection state, the detection end is used to cooperate with the surface groove of the tire, and a second distance is formed between the sensing end and the proximity switch, and the second distance is greater than the first distance.

2. The tire wear detection device according to claim 1, characterized in that: The detection mechanism further includes an elastic adjustment component disposed in the housing, and the proximity switch is mounted on the elastic adjustment component; the deformation direction of the elastic adjustment component is the same as the first direction.

3. The tire wear detection device according to claim 2, characterized in that: The elastic adjustment component includes an elastic member and an adjustment rod; one end of the elastic member is connected to the housing, and the other end of the elastic member is connected to the adjustment rod; the proximity switch is installed at one end of the adjustment rod facing away from the elastic member.

4. The tire wear detection device according to claim 1, characterized in that: The detection mechanism also includes a spring sleeved on the outer circumference of the contact member; the contact member is provided with a first limiting portion, the housing is provided with a second limiting portion, and two ends of the spring are respectively in contact with the first limiting portion and the second limiting portion.

5. The tire wear detection device according to claim 4, characterized in that: The size of the detection end is greater than that of the sensing end, and the detection end is designed as the first limiting portion.

6. The tire wear detection device according to claim 4, characterized in that: The second limiting portion is a limiting rib extending inwardly from the inner wall of the shell.

7. The tire wear detection device according to claim 1, characterized in that: The shell comprises a bottom wall and a side wall; the bottom wall is penetrated by an opening for the detection end to pass through; the side wall extends upward and gradually outward from the bottom wall.

8. The tire wear detection device according to claim 1, characterized in that: The tire wear detection device further comprises a controller and an alarm, wherein the controller is connected to the proximity switch and the alarm respectively.

9. The tire wear detection device according to claim 1, characterized in that: The linear transmission mechanism includes a ball screw and a nut that cooperate with each other; the ball screw is designed as the input end, and the nut is designed as the output end.

10. A vehicle, comprising a wheel arch and a tire, characterized in that: The wheel arch is equipped with a tire wear detection device as described in any one of claims 1 to 9.

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