Wear-free rolling type liquid level sensor

Abstract

The utility model discloses a non-wear rolling type liquid level sensor, which relates to the technical field of liquid level sensors, and comprises a connecting plate, a connecting rod rotationally connected onto the connecting plate, a buoy fixed on the connecting rod, a rocker arm fixedly connected to the end part of the connecting rod, a conduction area arranged on the connecting plate, and a resistor disc arranged on the conduction area on the connecting plate, the conductive film is located on the outer side of the connecting plate and covers the outer side of the resistor disc, and abrasion of the resistor disc can be reduced through the conductive film; the rolling mechanism is positioned at the end part of the rocker arm; according to the abrasion-free rolling type liquid level sensor, the conducting film and the rolling mechanism are arranged, the conducting film is located on the outer side of the resistor disc to protect the resistor disc, abrasion of the resistor disc is reduced to the minimum, rolling type conduction of the rolling mechanism can be more accurate, friction to the conducting film is further reduced, and the service life of the resistor disc is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid level sensors, in particular to a wear-free rolling liquid level sensor. Background Art

[0002] The liquid level sensor is an important component of the automobile fuel tank, and its various indicators directly affect the performance of the automobile instrument indication.

[0003] After checking the public (announcement) number: CN203148528U, a wear-free, high-life, and high-reliability liquid level sensor is disclosed, which protects the internal resistor sheet through sealing adhesive and flexible circuit contact plate, and conducts current signals to the resistor sheet through contacts;

[0004] However, the above technical solution still has the following problems:

[0005] The spacing between the sealing adhesive and the flexible circuit contact plate will be too large, which will affect the conduction of the current signal. The contact between the contact and the sealing adhesive is a tangent contact, which will lead to unstable current signal conduction, thereby affecting the indication of the car instrument. The contact has a linear route when moving left and right. Long-term use will also cause linear wear on the sealing adhesive. Utility Model Content

[0006] In view of the deficiencies of the prior art, the utility model provides a wear-free rolling liquid level sensor, which solves the problems raised by the above-mentioned background technology.

[0007] To achieve the above purpose, the utility model is implemented through the following technical solutions: a wear-free rolling liquid level sensor, including a connecting plate, a connecting rod is rotatably connected to the connecting plate, a float is fixed on the connecting rod, a rocker arm is fixedly connected to the end of the connecting rod, a conduction area is arranged on the connecting plate, a resistor is arranged on the conduction area, and also includes: a conductive film, the conductive film is arranged on the outer side of the connecting plate, and the conductive film covers the outer side of the resistor, and the wear of the resistor can be reduced by the conductive film; a rolling mechanism, the rolling mechanism is arranged at the end of the rocker arm, and the rolling mechanism and the resistor are arranged correspondingly, and the rolling mechanism and the conductive film are rolled against each other, and an electrical connection trigger signal is realized through the conductive film and the resistor.

[0008] Furthermore, the rolling mechanism includes: a conductive fixed frame, the conductive fixed frame is rotatably connected to a conductive roller inside, the conductive roller is rollingly arranged with the conductive film, and can transmit the current signal to the rocker arm through the conductive roller, thereby realizing current signal conduction.

[0009] Furthermore, the rolling mechanism also includes: feelers, which are arranged at both ends of the conductive fixing frame, the feelers are arranged perpendicular to the conductive film, and the lower ends of the feelers are arranged in an arc shape and are arranged tangent to the surface of the conductive film.

[0010] Furthermore, the rolling mechanism further comprises: a conductive auxiliary plate, the conductive auxiliary plate is fixedly connected to both ends of the conductive fixed frame, and the inner end of the conductive auxiliary plate is tangent to the outer surface of the conductive roller.

[0011] Furthermore, the antenna is arranged in a triangular shape.

[0012] Furthermore, the conductive auxiliary plates are symmetrically arranged on both sides of the conductive fixing frame.

[0013] Compared with the above-mentioned background technology, the wear-free rolling liquid level sensor provided by the present application includes a liquid level sensor with very mature technology today, and a conductive film and a rolling mechanism as core components. Its principle relies on the conductive film to block contact wear, and the rolling mechanism can facilitate the sensitivity of conduction and further reduce the friction on the conductive film.

[0014] The utility model provides a wear-free rolling liquid level sensor. Compared with the prior art, it has the following beneficial effects:

[0015] The wear-free rolling liquid level sensor is provided with a conductive film and a rolling mechanism. The conductive film is located on the outside of the resistor to protect the resistor, so that the wear of the resistor is minimized. The rolling conduction through the rolling mechanism can be more accurate, and the friction on the conductive film is further reduced, thereby increasing the service life of the resistor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the structure of the conductive film and resistor of the utility model;

[0018] Figure 3 It is a plan view of the rolling mechanism of the utility model;

[0019] Figure 4 It is a plan view of the rolling mechanism of the utility model.

[0020] In the figure: 1. connecting plate; 2. connecting rod; 3. float; 4. rocker arm; 5. conduction area; 6. resistor; 7. conductive film; 8. conductive fixing frame; 9. conductive roller; 10. conductive auxiliary plate; 11. antenna. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4 The utility model provides a technical solution: a wear-free rolling liquid level sensor, including a connecting plate 1, a connecting rod 2 is rotatably connected to the connecting plate 1, a float 3 is fixed to the connecting rod 2, a rocker arm 4 is fixedly connected to the end of the connecting rod 2, a conduction area 5 is arranged on the connecting plate 1, and a resistor 6 located on the conduction area 5 is arranged on the connecting plate 1, and further includes: a conductive film 7, the conductive film 7 is arranged on the outer side of the connecting plate 1, and the conductive film 7 covers the outer side of the resistor 6, and the wear of the resistor 6 can be reduced by the conductive film 7; a rolling mechanism, the rolling mechanism is arranged at the end of the rocker arm 4, and the rolling mechanism is arranged corresponding to the position of the resistor 6, and the rolling mechanism and the conductive film 7 are arranged to roll against each other, The trigger signal is electrically connected to the resistor 6 through the conductive film 7; the float 3 moves up and down with the amount of oil in the oil tank, and the float 3 drives one end of the connecting rod 2 to move up and down, and then the rocker arm 4 is driven to rotate on the connecting plate 1 through the prying of the connecting rod 2, and the rocker arm 4 is rotated left and right on the connecting plate 1 through the rolling mechanism at the end of the rocker arm 4. A conductive film 7 is provided on the outer side of the resistor 6 on the connecting plate 1, and the rolling mechanism rolls on the outer end face of the conductive film 7 to conduct current signals through the conductive film 7. The resistor 6 cannot be worn due to the protection of the conductive film 7, thereby extending the service life of the resistor 6, and the rolling mechanism can conduct current signals in the form of rolling, and the rolling friction is small and the rolling is more sensitive.

[0023] like Figure 3 As shown, the rolling mechanism includes: a conductive fixed frame 8, a conductive roller 9 is rotatably connected inside the conductive fixed frame 8, the conductive roller 9 and the conductive film 7 are rollingly arranged, and can transmit the current signal to the rocker arm 4 through the conductive roller 9, thereby realizing the current signal conduction. When the rocker arm 4 rotates left and right on the connecting plate 1, it drives the conductive fixed frame 8 at the lower end to move left and right. The conductive roller 9 is rotatably connected inside the conductive fixed frame 8, and rolling contact is made with the conductive roller 9 and the conductive film 7, and the current signal is conducted through the conductive film 7 and then transmitted to the instrument.

[0024] like Figure 4As shown, the rolling mechanism also includes: a feeler 11, which is arranged at both ends of the conductive fixing frame 8, the feeler 11 is arranged perpendicular to the conductive film 7, and the lower end of the feeler 11 is arranged in an arc shape and is tangent to the surface of the conductive film 7; the feeler 11 is arranged at both ends of the conductive fixing frame 8, and the end of the feeler 11 is arranged in an arc shape and is tangent to the surface of the conductive film 7, so that the conduction of the current signal can be assisted by the feeler 11, so that the transmission of the current signal is more stable.

[0025] like Figure 3 and Figure 4 As shown, the rolling mechanism also includes: a conductive auxiliary plate 10, which is fixedly connected to the two ends of the conductive fixed frame 8, and the inner end of the conductive auxiliary plate 10 is tangent to the outer surface of the conductive roller 9; the conductive auxiliary plate 10 is fixed to both sides of the conductive fixed frame 8, and the inner side surface of the conductive auxiliary plate 10 is tangent to the conductive roller 9. Similarly, the conductive auxiliary plate 10 assists the conductive roller 9 in conducting current signals.

[0026] like Figure 4 As shown, the antenna 11 is arranged in a triangular shape. The antenna 11 is arranged in a triangular shape in order to move more stably and reduce the contact area between the antenna 11 and the conductive film 7, thereby making the current signal transmission more sensitive.

[0027] like Figure 4 As shown, the conductive auxiliary plates 10 are symmetrically arranged on both sides of the conductive fixing frame 8. The conductive auxiliary plates 10 symmetrically arranged on both sides can improve the stability of the current signal when the float 3 in the oil tank moves up and down.

[0028] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A wear-free rolling liquid level sensor, comprising a connecting plate (1), a connecting rod (2) rotatably connected to the connecting plate (1), a float (3) fixed to the connecting rod (2), a rocker arm (4) fixedly connected to the end of the connecting rod (2), a conduction area (5) provided on the connecting plate (1), characterized in that: The connection plate (1) is provided with a resistor sheet (6) located on the conduction area (5), and further comprises: A conductive film (7), wherein the conductive film (7) is arranged on the outside of the connecting plate (1), and the conductive film (7) covers the outside of the resistor (6), and can reduce the wear of the resistor (6) through the conductive film (7); The rolling mechanism is arranged at the end of the rocker arm (4), and the rolling mechanism and the resistor (6) are arranged correspondingly, and the rolling mechanism and the conductive film (7) are arranged to roll against each other, so that a trigger signal is electrically connected through the conductive film (7) and the resistor (6).

2. A wear-free rolling liquid level sensor according to claim 1, characterized in that: The rolling mechanism comprises: A conductive fixed frame (8), wherein the conductive fixed frame (8) is rotatably connected to a conductive roller (9) inside, wherein the conductive roller (9) and the conductive film (7) are arranged in a rolling manner and can transmit a current signal to the rocker arm (4) through the conductive roller (9), thereby realizing current signal conduction.

3. A wear-free rolling liquid level sensor according to claim 2, characterized in that: The rolling mechanism also includes: Antennae (11), the antennae (11) are arranged at both ends of the conductive fixing frame (8), the antennae (11) are arranged perpendicular to the conductive film (7), and the lower end of the antennae (11) is arranged in an arc shape and is arranged tangent to the surface of the conductive film (7).

4. The wear-free rolling liquid level sensor according to claim 2, characterized in that: The rolling mechanism also includes: A conductive auxiliary plate (10) is located at both ends of the conductive fixed frame (8) and is fixedly connected thereto, and an inner end of the conductive auxiliary plate (10) is arranged tangentially to an outer surface of the conductive roller (9).

5. The wear-free rolling liquid level sensor according to claim 3, characterized in that: The antenna (11) is arranged in a triangular shape.

6. The wear-free rolling liquid level sensor according to claim 4, characterized in that: The conductive auxiliary plates (10) are symmetrically arranged on both sides of the conductive fixing frame (8).

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