Oil level inductive switch with alarm function

Abstract

The utility model relates to the technical field of inductive switches, in particular to an oil level inductive switch with an alarm function, which comprises a shell, a sealing cover connected to the top surface of the shell, a wire concentration box arranged on the upper surface of the sealing cover, an external connector lug integrated by wires of the wire concentration box, a cavity arranged at the bottom of the shell and a transverse rod transversely arranged at the bottom of the shell, and bearing rings arranged at two ends of the transverse rod. The bearing ring is rotationally connected with a rolling shaft, a rotating rod, a guide block and a connecting rod are fixed to the outer wall of the rolling shaft, the rotating rod is connected with the outer wall of a sliding rheostat, and two wires located in an oil level signal loop are connected with the rotating rod and the sliding rheostat respectively and provided with a guide piece matched with the bottom of the guide block. The other two wires in the alarm signal loop are respectively connected with the guide block and the guide sheet, and one end of the connecting rod far away from the rolling shaft is connected with a floating block. The oil level inductive switch with the alarm function is simple in structure, parts are easy to disassemble and replace, the specific oil level value can be accurately displayed, and the alarm function is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to induction switch technical field, concretely relates to oil level induction switch with alarm function. BACKGROUND

[0002] The sensor used by the oil level indicator of the vehicle instrument panel is usually a resistance type oil level sensor assembly. The working principle of the resistance type oil level sensor assembly is mainly to measure the oil level by using a sliding resistor. In the oil tank of the automobile, such a sensor is usually designed as a variable resistor, one end of which is connected to the bottom of the oil tank, and the other end is connected to the highest oil level of the oil tank. With the change of the oil level, the resistance value of the sensor will also change, thereby reflecting the amount of oil in the oil tank.

[0003] A utility model with the publication number CN221527779U discloses an oil level gauge, which comprises an oil level gauge body, a telescopic structure is arranged in the oil level gauge body, the oil level gauge body is connected with a transparent pipe body through the telescopic structure, an oil float is fixedly installed on the top inner wall of the transparent pipe body, a connecting rod is fixedly installed at the bottom of the oil float, and a floating block is fixedly installed at the bottom of the connecting rod. The oil level gauge is provided with the telescopic structure, when the oil level decreases, the transformer oil drives the floating block floating thereon to descend, the floating block drives the connecting rod to move downward, the connecting rod drives the oil float to move downward, the oil float drives the transparent pipe body to move downward, the transparent pipe body drives the double-sided rack to move downward, the double-sided rack is meshed with the gear on the left and right sides, the gear is meshed with the single-sided rack, the gear is sleeved with the rotating shaft in the middle, the rotating shaft is rotatably installed on the sliding block, and the double-sided rack drives the gear to rotate and move downward.

[0004] The oil level gauge is used in detail, and the oil level fluctuation is specifically displayed by changing the position of the mechanical structure, but the display is relatively fuzzy, the error is relatively large, the internal parts are required to have high precision, are not easy to maintain and replace, and are easy to be corroded by gasoline. Therefore, an oil level induction switch with alarm function is designed. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing an oil level induction switch with alarm function to solve the problems in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme.

[0007] The oil level sensing switch with alarm function, including the oil tank installed on the motorcycle, the oil level sensor assembly is installed on the inner top surface of the oil tank, the oil level sensor assembly includes a shell, the horizontal top surface of the shell is fixedly connected with a cover through a bolt, the top surface of the cover is provided with a junction box, four wires are arranged in the junction box, one end of the four wires extends into the shell, the other end extends out of the shell and is electrically connected with the same external wire head, the bottom side wall of the shell is provided with a rectangular hollow hole penetrating up and down in the center and a horizontal rod in the center, both ends of the horizontal rod are fixedly connected with bearing rings, the outer side of the horizontal rod is rotatably connected with a cylindrical roller, the curved surface of the roller is fixedly connected with a metal part of the rotating rod, a metal guide block and a connecting rod outside the bottom surface of the shell in sequence in the counterclockwise direction, one end of the rotating rod away from the roller is connected with a sliding rheostat fixed on the vertical inner side wall of the shell on the same side, the middle part of the rotating rod and the farthest end of the connecting rod away from the connecting rod are connected with the two wires for oil level signal loop respectively, the inner bottom surface of the shell is provided with a guide plate matched with the size of the guide block and corresponding in position at the end of the sliding rheostat away from the wire, the other two wires for alarm signal loop are connected with the guide block and the guide plate respectively, the end of the connecting rod away from the roller is connected with a float with a density less than gasoline.

[0008] As preferred, the size of the cover is larger than the cross-sectional size of the shell, the four corners of the cover are provided with fixing bolts for fixing the shell on the oil tank, and the top surface of the oil tank is further provided with a filler neck at the end away from the oil level sensor assembly.

[0009] As preferred, the sliding rheostat, rotating rod, guide block and guide plate are all provided with wire connecting bolts for connecting the corresponding wire ends on the conductive area.

[0010] As preferred, the horizontal rod is fixed in the rectangular hollow hole of the bottom side wall of the shell through two screw rods.

[0011] As preferred, the rotating rod is connected by adhesive of insulating material and non-insulating material, the wire connecting bolt is arranged on the non-insulating material section, the part of the rotating rod connected with the roller is of insulating material, and the rotating rod and the roller are fixedly connected through a bolt.

[0012] As preferred, the sliding rheostat is in the shape of a circular arc, and both ends of the sliding rheostat are fixed to the inner side wall of the shell through a fixing belt.

[0013] As preferred, the guide block and the roller are connected by insulating connection through a rubber block, and the guide plate is connected with the inner bottom surface of the shell through a bolt.

[0014] As preferred, the connecting rod is made of corrosion-resistant light material, the top end of the connecting rod is fixed on the outer wall of the roller shaft through bolts, and the end of the connecting rod away from the roller shaft is hinged with a disc-shaped insertion disc, and the insertion disc is clamped and matched with the sleeve hole opened on the outer wall of the floating block.

[0015] As preferred, when the oil amount in the oil tank is in the lowest state, the guide block rotates to abut against the guide sheet, and when the oil amount in the oil tank is in the highest state, the rotating rod rotates to contact one end of the connecting wire of the sliding rheostat.

[0016] Compared with the prior art, the oil level sensing switch with the alarm function has the advantages that:

[0017] 1、The oil level sensing switch with the alarm function has high precision and is not easily affected by environmental factors such as temperature and humidity, and therefore has good stability and reliability.

[0018] 2、The oil level sensing switch with the alarm function has simple structure and is easy to disassemble and replace parts, and the connection of the electric signal with the car computer and the instrument panel can accurately display the specific oil level value and has the alarm function. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is an application state schematic view of the utility model;

[0020] Figure 2 It is an overall cross-section structure schematic view of the oil level sensing assembly in the utility model (the oil amount is in the lowest state);

[0021] Figure 3 It is a partial structure schematic view in the utility model;

[0022] Figure 4 It is a partial disassembly structure schematic view in the utility model;

[0023] Figure 5 It is a partial structure schematic view in the utility model (the oil amount is in the highest state);

[0024] Figure 6 It is a partial structure disassembly schematic view in the utility model;

[0025] Figure 7 It is a partial structure disassembly schematic view in the utility model;

[0026] In the drawings:

[0027] 1、The oil tank;

[0028] 2、The oil filler hole;

[0029] 3, oil level sensor assembly; 31, housing; 32, cover; 321, fixing bolt; 33, junction box; 331, external wire head; 332, wire; 34, sliding rheostat; 35, fixing belt; 36, crossbar; 360, bearing ring; 361, screw rod; 362, roller; 363, rotating rod; 364, guide block; 365, connecting rod; 3651, plug-in disc; 37, floating block; 371, sleeve hole; 38, guide sheet; 39, wire connecting bolt. DETAILED DESCRIPTION

[0030] The technical solutions in the utility model will be clearly and completely described below with reference to the drawings in the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.

[0031] Please refer to Figures 1-7 The embodiment provides a technical scheme:

[0032] The oil level sensing switch with alarm function comprises a housing 31, a relatively larger cover 32 is fixed on the horizontal top surface of the rectangular housing 31 through bolt connection, a junction box 33 in a three-dimensional rectangular shape is horizontally arranged on the upper surface of the cover 32, four wires 332 located in the housing 31 are integrated into a group of external wire heads 331 connected with external joints through the junction box 33, a long and narrow rectangular cavity is arranged in the center of the bottom of the housing 31, and a dumbbell-shaped crossbar 36 is horizontally arranged in the center, bearing rings 360 are integrally formed at the two ends of the crossbar 36, the bearing rings 360 are rotatably connected to the cylindrical rollers 362 through the addition of rolling balls, the curved outer wall of the rollers 362 is fixedly connected in sequence with the rotating rod 363 made of metal, the guide block 364 made of metal and the connecting rod 365 located outside the bottom surface of the housing 31, which are located in the housing 31, the outer wall of the rotating rod 363 at the end far away from the roller 362 is connected with the outer wall of the sliding rheostat 34 fixed on the inner side wall of the housing 31 and parallel to the cross section of the crossbar 36, the two wires 332 in the oil level signal circuit are connected with the middle part of the rotating rod 363 and the rightmost wall of the sliding rheostat 34 respectively, the guide block 364 is in contact with the bottom inner surface of the housing 31, the guide sheet 38 matched with the bottom of the guide block 364 is arranged at the contact position between the guide block 364 and the bottom inner surface of the housing 31, the other two wires 332 in the alarm signal circuit are connected with the guide block 364 and the guide sheet 38 respectively, and the floating block 37 made of foamed plastic is connected to the end of the connecting rod 365 far away from the roller 362.

[0033] In this embodiment, for ease of disassembly and assembly, the size of the cover 32 is larger than the cross-sectional size of the outer shell 31. The cover 32 is provided with fixing bolts 321 at the four corners for fixing the outer shell 31 to the oil tank 1. The top surface of the oil tank 1 is also equipped with a filler port 2 at the end away from the oil level sensor assembly 3.

[0034] Furthermore, the sliding rheostat 34, rotating rod 363, guide block 364, and guide plate 38 are all provided with wire connection bolts 39 on the conductive area for connecting the corresponding wire ends 332. This not only has the characteristics of being firm and stable, but also does not affect stability and is easy to replace.

[0035] Furthermore, in order to keep the crossbar 36 stationary, the crossbar 36 is fixed in a rectangular cavity in the bottom side wall of the housing 31 by two screws 361.

[0036] Specifically, to prevent short circuits or leakage, the rotating rod 363 is made of insulating and non-insulating materials bonded together. The wire connecting bolt 39 is located on the non-insulating material section. The part connecting the rotating rod 363 and the roller 362 is made of insulating material. The rotating rod 363 and the roller 362 are fixedly connected by bolts.

[0037] In addition, in order to ensure that the electrical signal can accurately reflect the oil quantity, the sliding rheostat 34 is arc-shaped, and both ends of the sliding rheostat 34 are fixed to the inner wall of the housing 31 by the fixing strap 35, which plays a role in fixing and insulation and is easy to replace.

[0038] Specifically, the guide block 364 and the roller 362 are insulated together by an adhesive rubber block, and the guide plate 38 is connected to the inner bottom surface of the outer casing 31 by bolts, which provides both stability and good safety.

[0039] Furthermore, to ensure that the float 37 and the connecting rod 365 are sufficiently lightweight and resistant to gasoline corrosion, the connecting rod 365 is made of a corrosion-resistant and lightweight material. The top of the connecting rod 365 is fixed to the outer wall of the roller 362 by bolts. A disc-shaped insert 3651 is hinged to the end of the connecting rod 365 away from the roller 362. The insert 3651 engages with the sleeve hole 371 opened on the outer wall of the float 37, which can securely connect without affecting buoyancy.

[0040] Specifically, when the oil level in tank 1 is at its lowest, the guide block 364 rotates to abut against the guide plate 38. When the oil level in tank 1 is at its highest, the rotating rod 363 rotates to contact one end of the connecting wire 332 of the sliding rheostat 34, indicating that the oil level is low.

[0041] When using the fuel level sensor switch with alarm function of this utility model, the float 37 is inserted downwards into the fuel tank 1, and the fixing bolt 321 is aligned with the screw hole and tightened. The external wiring terminal is then connected to the circuit connector of the vehicle computer and the instrument panel to complete the installation. When the fuel tank 1 is empty or the fuel level is too low, the float 37 descends to its lowest position, causing the roller 362 to rotate, so that the top of the rotating rod 363 moves to the leftmost end of the sliding rheostat 34. At this time, the resistance of the current flowing through the rotating rod 363 to the sliding rheostat 34 is at its maximum. When the current in the fuel level display circuit is at its minimum, the electrical signal is converted by the computer and the displayed value on the instrument panel is at its minimum. At the same time, the guide block 364 contacts the guide plate 38 to activate the alarm circuit, and the low fuel level alarm on the instrument panel is activated. After refueling, the float block 37 rises, driving the roller 362 to rotate. The rotating rod 363 moves on the sliding rheostat 34, and the resistance of the current gradually decreases. This is reflected in the increased fuel level displayed on the instrument panel. At the same time, the guide block 364 leaves the guide plate 38, the alarm circuit is disconnected, and the alarm is deactivated.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to these embodiments without departing from the spirit and scope of this utility model, and all such changes and modifications fall within the scope of the utility model as claimed. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A fuel level sensor switch with alarm function, including a fuel tank (1) installed on a motorcycle, characterized in that: An oil level sensor assembly (3) is installed on the top surface of the oil tank (1). The oil level sensor assembly (3) includes a housing (31). A cover (32) is fixedly connected to the horizontal top surface of the housing (31) by bolts. A junction box (33) is provided on the top surface of the cover (32). Four wires (332) are threaded through the junction box (33). One end of each of the four wires (332) extends into the housing (31), and the other end extends out of the housing (31) and is electrically connected. The outer casing (31) has a rectangular opening at the center of its bottom sidewall, and a dumbbell-shaped horizontal bar (36) is placed horizontally in the center. Bearing rings (360) are fixedly fitted to both ends of the horizontal bar (36). A cylindrical roller (362) is rotatably fitted to the outside of the horizontal bar (36). The curved outer wall of the roller (362) is sequentially fixedly connected in a counterclockwise direction to metal parts located inside the outer casing (31). The rotating rod (363), the metal guide block (364), and the connecting rod (365) located outside the bottom surface of the housing (31) are connected. The end of the rotating rod (363) away from the roller (362) is connected to a sliding rheostat (34) fixed on one of the vertical inner walls of the housing (31) parallel to the same side. Two wires (332) for the oil level signal circuit are respectively connected to the middle of the rotating rod (363) and the sliding rheostat (34) away from the connecting rod (365). At the farthest end of the connecting rod (365), the inner bottom surface of the housing (31) near the end of the sliding rheostat (34) that is not connected to the wire (332) is provided with a guide plate (38) that matches the size of the guide block (364) and is corresponding in position. The other two wires (332) used for the alarm signal circuit are respectively connected to the guide block (364) and the guide plate (38). A float (37) is connected to the end of the connecting rod (365) away from the roller (362).

2. The oil level sensing switch with alarm function according to claim 1, characterized in that: The size of the cover (32) is larger than the cross-sectional size of the outer shell (31). The cover (32) is provided with fixing bolts (321) at the four corners for fixing the outer shell (31) to the oil tank (1). The top surface of the oil tank (1) is also equipped with a filler port (2) at the end away from the oil level sensor assembly (3).

3. The oil level sensing switch with alarm function according to claim 1, characterized in that: The sliding rheostat (34), rotating rod (363), guide block (364), and guide plate (38) are all provided with wire connecting bolts (39) on the conductive area for connecting the corresponding ends of the wires (332).

4. The oil level sensing switch with alarm function according to claim 1, characterized in that: The crossbar (36) is fixed in a rectangular cavity in the bottom side wall of the outer casing (31) by two screws (361).

5. The oil level sensing switch with alarm function according to claim 1, characterized in that: The rotating rod (363) is made of insulating and non-insulating materials bonded together. The wire connecting bolt (39) is located on the non-insulating material section. The part of the rotating rod (363) connected to the roller (362) is made of insulating material. The rotating rod (363) and the roller (362) are fixedly connected by bolts.

6. The oil level sensing switch with alarm function according to claim 1, characterized in that: The sliding rheostat (34) is arc-shaped, and both ends of the sliding rheostat (34) are fixed to the inner wall of the outer shell (31) by a fixing strap (35).

7. The oil level sensing switch with alarm function according to claim 1, characterized in that: A rubber block for insulation is adhered between the guide block (364) and the roller (362), and the guide piece (38) is connected to the inner bottom surface of the outer casing (31) by bolts.

8. The oil level sensing switch with alarm function according to claim 1, characterized in that: The connecting rod (365) is made of corrosion-resistant and lightweight material. The top end of the connecting rod (365) is fixed to the outer wall of the roller (362) by bolts. A disc-shaped insert (3651) is hinged to the end of the connecting rod (365) away from the roller (362). The insert (3651) is engaged with the sleeve hole (371) opened on the top surface of the float (37).

9. The oil level sensing switch with alarm function according to claim 1, characterized in that: When the oil level in the oil tank (1) is at its lowest, the guide block (364) rotates to abut against the guide plate (38); when the oil level in the oil tank (1) is at its highest, the rotating rod (363) rotates to contact one end of the connecting wire (332) of the sliding rheostat (34).

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