Heatable urea liquid level sensor

Abstract

The utility model relates to the technical field of urea liquid level sensors, in particular to a heatable urea liquid level sensor which comprises a urea liquid level sensor body and a shell, the top of the urea liquid level sensor body is fixedly connected with the bottom of the shell, a limiting structure is connected to the inner wall of the shell, a straight rod is fixedly connected to the rear portion of the urea liquid level sensor body, and the straight rod is connected with a heating device. The outer wall of the straight rod is attached to an outer wall heating pipe of the urea liquid level sensor, the moving screw drives the vertical plate to move upwards on the inner wall of the shell, the moving vertical plate drives the arc plate to move upwards and move outwards as much as possible when the arc plate does not conflict with a vehicle body structure, then the circular ring rotates backwards on the outer wall of the screw, and the urea liquid level sensor is heated. The rear end face of the circular ring abuts against the front face of the shell, the positions of the threaded rod and the vertical plate are fixed, then the outer wall of the wire is clamped into the arc plate, the bending position of the wire is changed, damage to the connecting position is avoided, the use danger of the urea liquid level sensor capable of being heated is eliminated, and the service life is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of urea liquid level sensors, in particular to a heatable urea liquid level sensor. Background Art

[0002] The urea level sensor is a sensor used for vehicle urea level detection. Its main function is to measure the urea level in the vehicle's urea tank and transmit the measurement results to the vehicle's computer main control system.

[0003] For example, an electrically heated urea liquid level sensor with the authorization announcement number of "CN206299433U" has an electric heating module and an electric heating tube connected to the inside through an electric heating wire. The electrically heated urea liquid level sensor is equipped with an electric heating device on the original urea liquid level sensor. When the ambient temperature is lower than the freezing temperature of the urea solution, direct electric heating can quickly and effectively dissolve the urea ice. It is not only simple in structure and easy to use, but also low in cost and good in heating effect, thus ensuring the normal operation of the post-treatment system. However, when using the heatable urea liquid level sensor, the wire of the heater needs to be connected to the interface of the vehicle, which will cause the wire to be pulled or the wire to fall due to being too long, which will cause cracks in the connection between the heatable urea liquid level sensor and the wire, causing the internal wire core to leak out, thereby increasing the risk of using the heatable urea liquid level sensor and shortening its service life. Utility Model Content

[0004] The utility model aims to solve the problem that the use danger of a heatable urea liquid level sensor is increased and the service life is shortened, and a heatable urea liquid level sensor is proposed.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A heatable urea liquid level sensor is designed, comprising a urea liquid level sensor and a shell, wherein the top of the urea liquid level sensor is fixedly connected to the bottom of the shell, the inner wall of the shell is connected with a limiting structure, a straight rod is fixedly connected to the rear of the urea liquid level sensor, the outer wall of the straight rod is fitted with an outer wall heating tube of the urea liquid level sensor, a mounting structure is connected to the front of the outer wall of the urea liquid level sensor, and a threaded opening is processed at the lower front of the mounting structure.

[0007] Preferably, the limiting structure includes a vertical plate and a screw rod, the outer wall of the vertical plate is slidably engaged with the inner wall of the shell, the lower front surface of the vertical plate is fixedly connected to the rear end surface of the screw rod, the outer wall of the screw rod is threadedly connected with a circular ring, and the top of the vertical plate is fixedly connected with an arc plate.

[0008] Preferably, the outer wall of the screw is slidably engaged with the front notch of the shell, and the inner wall of the arc plate is engaged with a conducting wire.

[0009] Preferably, the bottom of the wire is electrically connected to the top of the urea liquid level sensor.

[0010] Preferably, the mounting structure comprises a curved plate and a slide groove, the inner wall of the curved plate is fixedly connected to the front of the outer wall of the urea liquid level sensor, the left and right sides of the front of the curved plate are respectively processed with slide grooves, and the inner wall of the slide groove is slidably connected with a straight cylinder.

[0011] Preferably, a threaded opening is processed at the lower part of the front surface of the curved plate.

[0012] The utility model provides a heatable urea liquid level sensor, which has the beneficial effects of: the circular ring is rotated forward on the outer wall of the screw through the limiting structure, so that the circular ring is separated from the front side of the shell, and then the screw is pushed upward, and the screw moves upward in the notch on the front side of the shell, and the moving screw brings the vertical plate to move upward on the inner wall of the shell, and the moving vertical plate brings the arc plate to move upward, and the arc plate is moved outward as much as possible when it does not conflict with the vehicle body structure, and then the circular ring is rotated backward on the outer wall of the screw, so that the rear end face of the circular ring is pressed against the front side of the shell, and the position fixing of the screw and the vertical plate is completed, and then the outer wall of the wire is clamped into the inside of the arc plate, and the bending position of the wire is changed to avoid damage to the connection, thereby eliminating the use danger of the heatable urea liquid level sensor and ensuring the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 for Figure 1 Schematic diagram of the connection relationship between the middle vertical plate, the screw and the ring;

[0015] Figure 3 for Figure 1 Schematic diagram of the connection relationship between the straight rod and the curved rod;

[0016] Figure 4 for Figure 1 Schematic diagram of the connection relationship between the middle curved plate, the slide and the straight tube;

[0017] Figure 5 for Figure 1 The structural diagram of A in the figure;

[0018] Figure 6 for Figure 1 Schematic diagram of the structure of B.

[0019] In the figure: 1. urea liquid level sensor, 2. limiting structure, 201. vertical plate, 202. screw, 203. ring, 204. arc plate, 3. mounting structure, 301. curved plate, 302. slide groove, 303. straight cylinder, 4. housing, 5. threaded mouth, 6. wire, 7. straight rod, 8. bent rod. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings:

[0021] Example 1: Please refer to Figure 1-6 In the present embodiment, a heatable urea liquid level sensor includes a urea liquid level sensor 1 and a shell 4. The top of the urea liquid level sensor 1 is fixedly connected to the bottom of the shell 4. How to operate and use the urea liquid level sensor 1 is already a prior art, and no further elaboration is given. The model is selected according to the use requirements. The inner wall of the shell 4 is connected with a limiting structure 2, and a straight rod 7 is fixedly connected to the rear of the urea liquid level sensor 1. The outer wall of the straight rod 7 is fitted with the outer wall heating tube of the urea liquid level sensor 1. The front of the outer wall of the urea liquid level sensor 1 is connected with a mounting structure 3, and a threaded opening 5 is processed at the lower front of the mounting structure 3.

[0022] The limiting structure 2 includes a vertical plate 201 and a screw rod 202. The outer wall of the vertical plate 201 is slidably engaged with the inner wall of the housing 4. The vertical plate 201 is subjected to force and slides up and down through the inner wall of the housing 4. The lower front surface of the vertical plate 201 is fixedly connected to the rear end surface of the screw rod 202. The outer wall of the screw rod 202 is threadedly connected with a ring 203. The ring 203 is subjected to force and rotates forward and backward through the outer wall of the screw rod 202. The top of the vertical plate 201 is fixedly connected with an arc plate 204. The outer wall of the screw rod 202 is slidably engaged with the front notch of the housing 4. The screw 202 is subjected to force and slides up and down through the notch of the front surface of the housing 4. The inner wall of the arc plate 204 is clamped with a wire 6.

[0023] By limiting the structure 2, the ring 203 is rotated forward on the outer wall of the screw 202, so that the ring 203 is separated from the front of the shell 4, and then the screw 202 is pushed upward, and the screw 202 moves upward in the notch on the front of the shell 4. The moving screw 202 moves upward with the vertical plate 201 on the inner wall of the shell 4, and the moving vertical plate 201 moves upward with the arc plate 204. When the arc plate 204 does not conflict with the vehicle body structure, it moves outward as much as possible, and then the ring 203 rotates backward on the outer wall of the screw 202, so that the rear end face of the ring 203 is pressed against the front of the shell 4, and the position of the screw 202 and the vertical plate 201 is fixed. Then, the outer wall of the wire 6 is inserted into the inside of the arc plate 204, and the bending position of the wire 6 is changed to avoid damage to the connection, thereby eliminating the danger of using the heatable urea liquid level sensor and ensuring the service life.

[0024] The bottom of the wire 6 is electrically connected to the top of the urea liquid level sensor 1. The mounting structure 3 includes a curved plate 301 and a slide groove 302. The inner wall of the curved plate 301 is fixedly connected to the front of the outer wall of the urea liquid level sensor 1. The left and right sides of the front of the curved plate 301 are respectively processed with slide grooves 302. The inner wall of the slide groove 302 is slidably connected with a straight cylinder 303. The straight cylinder 303 is subjected to force to slide along the inner wall of the slide groove 302. A threaded opening 5 is processed at the lower part of the front of the curved plate 301.

[0025] Working principle:

[0026] When the urea liquid level changes, the float will float up and down with the rise and fall of the urea liquid level, and transmit this state to the capacitive sensor through the connecting rod. The capacitive sensor detects the change in capacitance value based on the up and down movement of the float, and then transmits the signal to the vehicle computer main control system, thereby realizing the monitoring of the urea liquid level. The urea liquid level sensor 1 can control the heating tube on the outer wall to increase the temperature, thereby realizing the heating of the urea liquid.

[0027] Urea level sensor installation:

[0028] The urea liquid level sensor 1 is inserted into the urea tank of the vehicle, the curved plate 301 is fitted with the outer wall of the urea tank, and then the bolts are passed through the threaded opening 5 to fix to the urea tank, and then the straight cylinder 303 is slid on the inner wall of the slide groove 302 to adjust the connection position, and then the bolts are threaded through the straight cylinder 303 to fix to the urea tank, and the installation of the urea liquid level sensor 1 is completed.

[0029] Urea liquid level sensor wire placement:

[0030] After the urea liquid level sensor 1 is installed, the ring 203 is rotated forward on the outer wall of the screw 202 to separate the ring 203 from the front of the shell 4, and then the screw 202 is pushed upward, and the screw 202 moves upward in the notch on the front of the shell 4. The moving screw 202 moves upward with the vertical plate 201 on the inner wall of the shell 4, and the moving vertical plate 201 moves upward with the arc plate 204. When the arc plate 204 does not conflict with the vehicle body structure, it moves outward as much as possible, and then the ring 203 rotates backward on the outer wall of the screw 202 to make the rear end face of the ring 203 press against the front of the shell 4, completing the position fixation of the screw 202 and the vertical plate 201, and then the outer wall of the wire 6 is inserted into the inside of the arc plate 204, and the bending position of the wire 6 is changed to avoid damage to the connection.

[0031] Example 2: Please refer to Figure 1-6 : In this embodiment, a heatable urea liquid level sensor also includes a bent rod 8, the left end of the bent rod 8 is fixedly connected to the right side of the straight rod 7, and the left side of the outer wall of the bent rod 8 is in contact with the right side of the urea liquid level sensor 1.

[0032] Working principle:

[0033] When the urea liquid level sensor 1 is in use, the outer wall of the bent rod 8 fits against the outer wall of the urea liquid level sensor 1 , and the outer wall of the straight rod 7 fits against the inner wall of the urea liquid level sensor 1 . The straight rod 7 and the bent rod 8 support the heating tube on the outer wall of the urea liquid level sensor 1 , playing a shaping role.

[0034] Although the present invention has been shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A heatable urea liquid level sensor, comprising a urea liquid level sensor (1) and a housing (4), characterized in that: The top of the urea liquid level sensor (1) is fixedly connected to the bottom of the housing (4); the inner wall of the housing (4) is connected to a limiting structure (2); a straight rod (7) is fixedly connected to the rear of the urea liquid level sensor (1); the outer wall of the straight rod (7) is in contact with an outer wall heating pipe of the urea liquid level sensor (1); the front of the outer wall of the urea liquid level sensor (1) is connected to a mounting structure (3); and a threaded opening (5) is machined at the lower front of the mounting structure (3).

2. A heatable urea liquid level sensor according to claim 1, characterized in that: The limiting structure (2) comprises a vertical plate (201) and a screw rod (202); the outer wall of the vertical plate (201) is slidably engaged with the inner wall of the outer shell (4); the lower front surface of the vertical plate (201) is fixedly connected to the rear end surface of the screw rod (202); the outer wall of the screw rod (202) is threadedly connected with a circular ring (203); and the top of the vertical plate (201) is fixedly connected with an arc plate (204).

3. A heatable urea liquid level sensor according to claim 2, characterized in that: The outer wall of the screw rod (202) is slidably engaged with the front notch of the outer shell (4), and the inner wall of the arc plate (204) is engaged with a conducting wire (6).

4. A heatable urea liquid level sensor according to claim 3, characterized in that: The bottom of the wire (6) is electrically connected to the top of the urea liquid level sensor (1).

5. The heatable urea liquid level sensor according to claim 1, characterized in that: The mounting structure (3) comprises a curved plate (301) and a slide groove (302); the inner wall of the curved plate (301) is fixedly connected to the front of the outer wall of the urea liquid level sensor (1); the slide grooves (302) are respectively processed on the left and right sides of the front of the curved plate (301); and the inner wall of the slide groove (302) is slidably engaged with a straight cylinder (303).

6. A heatable urea liquid level sensor according to claim 5, characterized in that: A threaded opening (5) is processed at the lower part of the front surface of the curved plate (301).

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