Resistor disc of oil level sensor

Abstract

The utility model discloses a resistor disc of an oil level sensor, which comprises a first substrate, the middle part of the side edge of the first substrate is fixedly connected with a second substrate, an arc-shaped guide rail is fixed on the upper surface of the first substrate, an arc-shaped resistor disc is embedded in the upper surface of the arc-shaped guide rail, and the surface of the arc-shaped guide rail is connected with a sliding sleeve in a sliding manner. According to the utility model, the first substrate, the second substrate, the arc-shaped guide rail, the arc-shaped resistor disc, the sliding sleeve, the conduction assembly and the swing assembly are arranged, the arc-shaped resistor disc is a continuous resistor disc, one end of the arc-shaped resistor disc is connected with the conducting strip, and the conducting rod of the conduction assembly is in contact with the surface of the arc-shaped resistor disc and can move along the arc-shaped guide rail through the swing assembly and the sliding sleeve; therefore, the conducting assembly can be always contacted with the arc-shaped resistor disc, the power failure phenomenon is avoided, the spring of the conducting assembly can push the conducting rod to be always contacted with the arc-shaped resistor disc, and the good contact between the conducting rod and the arc-shaped resistor disc is further ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, in particular to a resistor sheet of an oil level sensor. Background Art

[0002] The existing sensors for measuring the oil level of automobiles usually adopt a structure in which a sliding contact slides on a resistor. The sensor includes a housing and a resistor arranged in the housing. Two terminals on the resistor are connected to an input lead and an output lead. A rocker arm is hinged on the housing, and a part of the rocker arm is in the housing. The rocker arm is driven and rotated by an oil float. However, the existing resistor has the following disadvantages:

[0003] Since the resistor of the existing resistor sheet is in the shape of comb teeth and there is a gap between two adjacent resistor probes, when the sliding contact moves to the gap between the two resistor probes, power failure may occur, and if the contact between the contact and the resistor is poor, power failure may also occur. Therefore, the utility model proposes a resistor sheet for an oil level sensor. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a resistor sheet for an oil level sensor.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a resistor sheet of an oil level sensor, comprising a first substrate, a second substrate fixedly connected to the middle part of the side of the first substrate, an arc-shaped guide rail fixed to the upper surface of the first substrate, an arc-shaped resistor sheet embedded in the upper surface of the arc-shaped guide rail, a sliding sleeve slidably connected to the surface of the arc-shaped guide rail, a conductive component electrically connected to the arc-shaped resistor sheet fixedly connected to the upper surface of the sliding sleeve, an upper surface of the second substrate away from one end of the first substrate being rotatably connected to a rotating shaft, a cross bar fixedly connected to the surface of the rotating shaft, and the other end of the cross bar fixedly connected to the outer side wall of the sliding sleeve.

[0006] Furthermore, the rotating shaft and the crossbar form a swing assembly, the center of the arc-shaped guide rail coincides with the rotating shaft, and the top end of the rotating shaft is fixedly connected to the driving rod of the oil float.

[0007] Furthermore, a plurality of mounting holes are formed on the sides of the first substrate and the second substrate.

[0008] Furthermore, a conductive sheet is fixed on the upper surface of the first substrate and located at one end of the arc-shaped guide rail, and the conductive sheet is electrically connected to the arc-shaped resistor sheet.

[0009] Furthermore, the conductive component includes a circular tube fixed to the upper surface of the sliding sleeve, the top wall of the circular tube is provided with a through hole, a conductive rod is provided inside the circular tube, the bottom end of the conductive rod is in contact with the upper surface of the arc-shaped resistor, a wire is fixedly connected to the top of the conductive rod, and the top of the wire extends through the through hole to the outside of the circular tube.

[0010] Furthermore, a slide plate is fixed on the bottom surface of the conductive rod, and the slide plate is slidably connected to the inner wall of the circular tube, and a spring is fixedly connected to the upper surface of the slide plate and the inner top wall of the circular tube.

[0011] Furthermore, a plurality of spherical grooves are formed on the inner top wall of the sliding sleeve, and a ball is rotatably connected inside each spherical groove, and the bottom end of the ball is in contact with the upper surface of the arc guide rail.

[0012] Beneficial effects of the utility model:

[0013] When the utility model is in use, the resistor sheet of the oil level sensor is provided with a first substrate, a second substrate, an arc-shaped guide rail, an arc-shaped resistor sheet, a sliding sleeve, a conduction component and a swinging component. The arc-shaped resistor sheet is a continuous resistor sheet, one end of the arc-shaped resistor sheet is connected to the conductive sheet, and the conductive rod of the conduction component is in contact with the surface of the arc-shaped resistor sheet and can be moved along the arc-shaped guide rail by the swinging component and the sliding sleeve. Therefore, the conduction component can always be in contact with the arc-shaped resistor sheet to avoid power failure, and the spring of the conduction component can push the conductive rod to always be in contact with the arc-shaped resistor sheet, further ensuring that the conductive rod is in good contact with the arc-shaped resistor sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the specific implementation methods will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 : Overall top view of the utility model;

[0016] Figure 2 : A partial side sectional view of the utility model;

[0017] Figure 3 : A three-dimensional schematic diagram of the guide rail and the sliding sleeve of the utility model;

[0018] Figure 4 : Schematic diagram of the connection between the second substrate and the rotating shaft of the utility model.

[0019] The reference numerals are as follows:

[0020] 1. First substrate; 2. Second substrate; 3. Arc guide rail; 4. Arc resistor; 5. Sliding sleeve; 6. Conductive component; 61. Round tube; 62. Perforation; 63. Conductive rod; 64. Slide plate; 65. Spring; 66. Wire; 7. Conductive sheet; 8. Rotating shaft; 9. Cross bar; 10. Spherical groove; 11. Ball. 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 of 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] like Figure 1-Figure 4 As shown, a resistor sheet of an oil level sensor comprises a first substrate 1, a second substrate 2 is fixedly connected to the middle of the side of the first substrate 1, an arc guide rail 3 is fixed to the upper surface of the first substrate 1, an arc resistor sheet 4 is embedded in the upper surface of the arc guide rail 3, a sliding sleeve 5 is slidably connected to the surface of the arc guide rail 3, a conducting component 6 electrically connected to the arc resistor sheet 4 is fixedly connected to the upper surface of the sliding sleeve 5, a rotating shaft 8 is rotatably connected to the upper surface of the second substrate 2 away from one end of the first substrate 1, a cross bar 9 is fixedly connected to the surface of the rotating shaft 8, and the other end of the cross bar 9 is fixedly connected to the outer wall of the sliding sleeve 5.

[0023] like Figure 1 As shown, the rotating shaft 8 and the cross bar 9 form a swing assembly, the center of the arc guide rail 3 coincides with the rotating shaft 8, and the top end of the rotating shaft 8 is fixedly connected to the driving rod of the oil float.

[0024] In this embodiment, the method in which the oil float drives the rotating shaft 8 to rotate is the prior art, and the specific working principle will not be described in detail.

[0025] like Figure 1 As shown, a plurality of mounting holes are provided on the sides of the first substrate 1 and the second substrate 2. The first substrate 1 and the second substrate 2 can be mounted and fixed through the mounting holes.

[0026] like Figure 1 As shown, a conductive sheet 7 is fixed on the upper surface of the first substrate 1 and located at one end of the arc-shaped guide rail 3 , and the conductive sheet 7 is electrically connected to the arc-shaped resistor sheet 4 .

[0027] After the conductive sheet 7 is connected to the arc-shaped resistor sheet 4, the conductive sheet 7 can be used as an input end or an output end.

[0028] like Figure 1-Figure 3As shown, the conducting component 6 includes a circular tube 61 fixed to the upper surface of the sliding sleeve 5, a through hole 62 is opened on the top wall of the circular tube 61, a conductive rod 63 is arranged inside the circular tube 61, the bottom end of the conductive rod 63 is in contact with the upper surface of the arc-shaped resistor 4, a wire 66 is fixedly connected to the top of the conductive rod 63, and the top end of the wire 66 extends through the through hole 62 to the outside of the circular tube 61.

[0029] The conductive rod 63 is in contact with the arc-shaped resistor 4, so that the conductive rod 63 can be used as an input end or an output end, and the conductive component 6 can change its position by moving on the surface of the arc-shaped guide rail 3 through the sliding sleeve 5, and the distance between the conductive rod 63 and the conductive sheet 7 is the length of the arc-shaped resistor 4 connected to the circuit.

[0030] like Figure 2 As shown, a slide plate 64 is fixed on the bottom surface of the conductive rod 63 , and the slide plate 64 is slidably connected to the inner wall of the circular tube 61 , and a spring 65 is fixedly connected between the upper surface of the slide plate 64 and the inner top wall of the circular tube 61 .

[0031] The spring 65 pushes the slide plate 64 downward, so that the conductive rod 63 can always be in contact with the arc-shaped resistor sheet 4.

[0032] like Figure 2 As shown, a plurality of spherical grooves 10 are formed on the inner top wall of the sliding sleeve 5 , and a ball 11 is rotatably connected inside each spherical groove 10 , and the bottom end of the ball 11 is in contact with the upper surface of the arc guide rail 3 .

[0033] When the sliding sleeve 5 slides on the surface of the arc-shaped guide rail 3 , the balls 11 can reduce the friction between the sliding sleeve 5 and the arc-shaped guide rail 3 , so that the sliding sleeve 5 moves more smoothly.

[0034] Working principle: Connect the wire 66 and the conductive sheet 7 to the circuit of the sensor. When the oil float moves, the driving rod will drive the shaft 8 to rotate, and the shaft 8 will drive the cross bar 9 to deflect. The cross bar 9 will then drive the sliding sleeve 5 to move along the arc guide rail 3. During the movement, the conductive rod 63 will always be in contact with the arc resistor 4, thereby changing the length of the arc resistor 4 connected to the circuit, thereby changing the resistance value, and then realizing the measurement of the sensor.

[0035] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A resistor sheet for an oil level sensor, comprising a first substrate (1), characterized in that: A second substrate (2) is fixedly connected to the middle of the side of the first substrate (1); an arc-shaped guide rail (3) is fixed to the upper surface of the first substrate (1); an arc-shaped resistor (4) is embedded in the upper surface of the arc-shaped guide rail (3); a sliding sleeve (5) is slidably connected to the surface of the arc-shaped guide rail (3); a conducting component (6) electrically connected to the arc-shaped resistor (4) is fixedly connected to the upper surface of the sliding sleeve (5); a rotating shaft (8) is rotatably connected to the upper surface of the second substrate (2) away from one end of the first substrate (1); a cross bar (9) is fixedly connected to the surface of the rotating shaft (8); and the other end of the cross bar (9) is fixedly connected to the outer wall of the sliding sleeve (5).

2. The resistor sheet of the oil level sensor according to claim 1, characterized in that: The rotating shaft (8) and the crossbar (9) form a swing assembly, the center of the arc-shaped guide rail (3) coincides with the rotating shaft (8), and the top end of the rotating shaft (8) is fixedly connected to the driving rod of the oil float.

3. The resistor sheet of the oil level sensor according to claim 1, characterized in that: A plurality of mounting holes are provided on the sides of the first substrate (1) and the second substrate (2).

4. The resistor sheet of the oil level sensor according to claim 1, characterized in that: A conductive sheet (7) is fixed on the upper surface of the first substrate (1) and located at one end of the arc-shaped guide rail (3), and the conductive sheet (7) is electrically connected to the arc-shaped resistor sheet (4).

5. The resistor sheet of the oil level sensor according to claim 1, characterized in that: The conduction component (6) comprises a circular tube (61) fixed to the upper surface of the sliding sleeve (5), the top wall of the circular tube (61) is provided with a through hole (62), a conductive rod (63) is provided inside the circular tube (61), the bottom end of the conductive rod (63) is in contact with the upper surface of the arc-shaped resistor (4), the top end of the conductive rod (63) is fixedly connected with a wire (66), and the top end of the wire (66) passes through the through hole (62) and extends to the outside of the circular tube (61).

6. The resistor sheet of the oil level sensor according to claim 5, characterized in that: A slide plate (64) is fixed on the bottom surface of the conductive rod (63), and the slide plate (64) is slidably connected to the inner wall of the circular tube (61). A spring (65) is fixedly connected to the upper surface of the slide plate (64) and the inner top wall of the circular tube (61).

7. The resistor sheet of the oil level sensor according to claim 1, characterized in that: The inner top wall of the sliding sleeve (5) is provided with a plurality of spherical grooves (10), and a ball (11) is rotatably connected inside each spherical groove (10), and the bottom end of the ball (11) is in contact with the upper surface of the arc guide rail (3).

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