Timing belt tensioner of automobile engine

Abstract

The utility model discloses an automobile engine timing belt tensioner, which belongs to the technical field of automobile part control, and comprises a tensioner device main body, a contact main body is arranged in the tensioner device main body, one end of the contact main body extends out of the tensioner device main body, and a compression spring is arranged on the outer side of the other end of the contact main body; a compression spring is arranged in the tensioner device body, a compression adjusting rod located behind the contact body is further arranged in the tensioner device body, the compression adjusting rod can move front and back so as to push the contact body to move, a pressure sensor is arranged between the compression adjusting rod and the compression spring, and the pressure sensor is connected with a control unit. According to the automobile engine timing belt tensioner, the tensioner device can automatically adjust the pre-tightening pressure of the timing belt so as to prevent the timing belt from skipping teeth, and meanwhile, whether the timing belt is lengthened to the limit or not can be judged, so that the operation of an engine is guaranteed, the failure rate of an automobile is reduced, and the service life of the automobile is prolonged. Therefore, the driving of the automobile is safer and guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile component control, in particular to a timing belt tensioner for an automobile engine. Background Art

[0002] As an important tool for people's lives, the quality of the car's operation directly affects the normal driving of the car. The timing belt of the car engine has different recommended replacement mileages for different brands of cars. Generally, it needs to be replaced every 60,000-80,000 kilometers, but most drivers are not very clear about it. At the same time, the use environment of the car, driving habits, and product quality also have a great impact on the operation of the timing belt. These problems may cause the timing belt to jump teeth, break, etc., and eventually cause the timing to be incorrect, resulting in unstable engine idle speed, weak acceleration, and inability to start. In severe cases, the valve top piston will cause the piston to be scrapped, the valve stem to be bent, and the crankshaft to break. Therefore, in order to solve this problem, we need an automobile engine tensioner device to solve it. Utility Model Content

[0003] In order to solve the deficiencies in the above-mentioned prior art, the purpose of the utility model is to provide a timing belt tensioner for an automobile engine. During the normal operation of the automobile engine, the tensioner device will automatically adjust the pre-tightening pressure of the timing belt to prevent the timing belt from jumping teeth. At the same time, it can also determine whether the timing belt has been stretched to the limit and needs to be replaced and give a voice alarm. In this way, the operation of the engine is guaranteed and the failure rate of the automobile is reduced, thereby making the driving of the automobile safer and more secure.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] Provided is a timing belt tensioner for an automobile engine, comprising a tensioner device body, a contact body being arranged inside the tensioner device body, one end of the contact body extending out of the tensioner device body, and a compression spring being arranged outside the other end;

[0006] The tensioner device body is also provided with a clamping adjustment rod located behind the contact body, and the clamping adjustment rod can move forward and backward to promote the movement of the contact body. A pressure sensor is provided between the clamping adjustment rod and the compression spring, and the pressure sensor is connected to the control unit.

[0007] Furthermore, the clamping adjustment rod is provided with a rack, the rack is meshed with a gear, and the gear is driven to rotate by a motor; the motor is controlled by a control unit.

[0008] Furthermore, an encoder is provided on the output shaft of the motor, and the encoder is connected to the control unit.

[0009] Furthermore, it also includes a voice announcer connected to the controller.

[0010] Furthermore, it also includes installing a debugging switch.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The automobile engine timing belt tensioner of the present embodiment, during the normal operation of the automobile engine, the tensioner device will determine whether the pre-tightening pressure of the timing belt meets the requirements based on the signal of the pressure sensor. If not, the control unit controls the motor to rotate so that the compression adjustment rod compresses the compression spring, thereby automatically adjusting the pre-tightening pressure of the contact body on the timing belt; at the same time, the encoder detects the signal of the number of rotations of the motor shaft and transmits it to the control unit. The control unit determines whether the timing belt is stretched to the limit and needs to be replaced. If it exceeds the set limit value, the control unit controls the voice alarm to sound an alarm, so that the operation of the engine is guaranteed and the failure rate of the automobile is reduced, making the driving of the automobile safer and more secure. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the structure of the motor;

[0016] Figure 3 This is the control principle block diagram;

[0017] Figure 4 For use with the schematic diagram.

[0018] In the figure: 1-tensioner device body, 2-contact body, 3-compression spring, 4-compression adjustment rod, 5-pressure sensor, 6-rack, 7-gear, 8-motor, 9-encoder. DETAILED DESCRIPTION

[0019] The present application is 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 relevant utility model, rather than to limit the utility model. It is also necessary to explain that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings.

[0020] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0021] like Figure 1-4 As shown, this embodiment provides a timing belt tensioner for an automobile engine, including a tensioner device body 1, a contact body 2 is arranged inside the tensioner device body 1, one end of the contact body 2 extends out of the tensioner device body 1, and a compression spring 3 is arranged outside the other end. When the compression spring 3 gives a certain elastic force to the contact, a suitable pre-tightening pressure is applied to the timing belt through the contact body 2. Specifically, the front end of the compression spring 3 is connected to the tensioner device body 1, and the end is connected to the end of the contact body 2. When the compression spring 3 is pushed, the contact body 2 can move outward.

[0022] The tensioner device body 1 is also provided with a compression adjustment rod 4 located behind the contact body 2, and the compression adjustment rod 4 can move forward and backward to push the contact body 2 to move. A pressure sensor 5 is provided between the compression adjustment rod 4 and the compression spring 3, and the pressure sensor 5 is connected to the control unit. The pressure sensor 5 is used to detect the elastic force of the compression spring 3 and transmit the detected signal to the control unit.

[0023] The clamping adjustment rod 4 is provided with a rack 6, and the rack 6 is meshed with a gear 7, and the gear 7 is driven to rotate by a motor 8; the motor 8 is controlled by a control unit. An encoder 9 is provided on the output shaft of the motor 8, and the encoder 9 is connected to the control unit. The encoder 9 is used to detect the number of revolutions of the output shaft of the motor 8, thereby indirectly judging the distance that the clamping adjustment rod 4 moves inward relative to the compression spring 3, and finally determining the length of the engine timing belt being stretched, and transmitting the signal to the control unit.

[0024] The tensioner also includes a function switch for controlling whether the tensioner device is started or closed, and is installed on the car.

[0025] The tensioner also includes a voice announcer connected to the controller. When the control unit receives an abnormal signal, the voice announcer is controlled to make a voice announcement. The tensioner is installed on the car.

[0026] The tensioner also includes an installation and debugging switch for installing or removing the timing belt. When the installation and debugging switch is closed, a signal is transmitted to the control unit, and the control unit controls the motor 8 to rotate, and the clamping adjustment rod 4 is moved through the gear 7 and rack 6 mechanism, so that the force on the clamping spring is reduced, and the pre-tightening pressure of the contact body 2 on the timing belt is also reduced, which facilitates the installation of the timing belt; when the timing belt is installed in place, the installation and debugging switch is disconnected, and a signal is transmitted to the control unit, and the control unit controls the motor 8 to rotate in the opposite direction, and the clamping adjustment rod 4 is moved through the gear 7 and rack 6 mechanism, so that the force on the clamping spring is increased, and the pre-tightening pressure of the contact body 2 on the timing belt is also increased.

[0027] During normal operation of the automobile engine, the timing belt will be stretched as time goes by, and the contact body 2 will move relative to the timing belt under the action of the compression spring 3. At this time, the pre-tightening pressure of the contact body 2 on the timing belt will become smaller, the elastic force of the compression spring 3 will become relatively smaller, and the signal detected by the pressure sensor 5 will also become smaller. After receiving the signal, the control unit determines that the pre-tightening pressure of the timing belt does not meet the standard requirement range, thereby controlling the motor 8 to rotate and tightening the compression spring 3 by the compression adjustment rod 4, so that the pre-tightening pressure of the contact body 2 on the timing belt will increase; when the signal detected by the pressure sensor 5 meets the set standard range, the control unit controls the motor 8 to cut off the power, so that the tensioner device completes the adjustment of the pre-tightening pressure of the timing belt.

[0028] At the same time, the encoder 9 detects the number of rotations of the motor 8 shaft and transmits the signal to the control unit. After receiving the signal, the control unit determines whether the timing belt is stretched to the limit and needs to be replaced; if it exceeds the set limit value, the control unit controls the voice alarm to sound a voice alarm to remind the driver to perform maintenance and repairs.

[0029] The automobile engine timing belt tensioner of this embodiment has a simple structure and is easy to install and operate. At the same time, automatic control and detection of the tensioner device are increased, so that the operation of the engine is guaranteed and the failure rate of the automobile is reduced, thereby making the driving of the automobile safer and more secure.

[0030] Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the concept of the utility model. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A timing belt tensioner for an automobile engine, characterized in that: It comprises a tensioner device body (1), wherein a contact body (2) is arranged inside the tensioner device body (1), one end of the contact body (2) extends out of the tensioner device body (1), and a compression spring (3) is arranged outside the other end; The tensioner device body (1) is also provided with a clamping adjustment rod (4) located behind the contact body (2); the clamping adjustment rod (4) can move forward and backward to push the contact body (2) to move; a pressure sensor (5) is provided between the clamping adjustment rod (4) and the compression spring (3); and the pressure sensor (5) is connected to a control unit.

2. The automotive engine timing belt tensioner according to claim 1, characterized in that: The clamping adjustment rod (4) is provided with a rack (6), the rack (6) is meshed with a gear (7), and the gear (7) is driven to rotate by a motor (8); the motor (8) is controlled by a control unit.

3. The automotive engine timing belt tensioner according to claim 2, characterized in that: An encoder (9) is provided on the output shaft of the motor (8), and the encoder (9) is connected to the control unit.

4. The automotive engine timing belt tensioner according to claim 1, characterized in that: Also included is a voice announcer connected to the controller.

5. The automotive engine timing belt tensioner according to claim 1, characterized in that: Also includes installation debug switches.

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