Automobile fuel quantity monitoring sensor

Abstract

The invention discloses an automobile fuel oil quantity monitoring sensor, and relates to the field of sensors, the automobile fuel oil quantity monitoring sensor comprises a mounting head connected with an oil tank and a wire harness interface arranged at the side edge of the mounting head, a connecting seat is fixed below the mounting head, a mounting seat is arranged below the connecting seat, a hollow detection rod is connected below the mounting seat, and the hollow detection rod is connected with the wire harness interface. The lower end of the detection rod is designed to be of an opening-shaped structure, the lower end of the detection rod is connected with a balancing weight, a movable ball is fixed to the upper portion of the installation base, and the movable ball and the installation base are rotationally connected. According to the automobile fuel quantity monitoring sensor, the floating block is driven to move vertically through the buoyancy of the liquid level of the oil and is matched with the measuring sensor to monitor the liquid level of the oil, the floating block moves in the hollow area in the detection rod, the influence of shifting of the liquid level of the external oil on the floating block can be reduced, detection is more stable, meanwhile, the measuring sensor is located in the mounting base, and the measuring sensor is convenient to use. And no circuit structure is arranged in the oil body, so that the operation is safer.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of sensors, in particular to an automobile fuel oil quantity monitoring sensor. BACKGROUND

[0002] Automobile fuel oil quantity monitoring is an important link in vehicle operation management. Through detection of the automobile oil quantity, the remaining automobile oil quantity can be known, so that the driver can reasonably plan a path or supplement the oil. At present, oil detection is generally performed by detecting the remaining oil quantity through liquid buoyancy, resistance change and sensors.

[0003] Prior art 1 (Chinese patent with application number CN202321068702.4, published on September 19, 2023) is a fuel sensor, which comprises a sensor float head assembly arranged at the bottom end of a mounting flange and a sensor shell. The top end of the mounting flange is provided with the sensor shell. The upper part of the sensor shell is provided with a lifting type upper cover, and the sensor shell and the lifting type upper cover are mutually attached. The top end of the lifting type upper cover is fixedly connected with a protective cover inside. The bottom end of the sensor shell is fixedly connected with a first gear at the center position, and the first gear is rotatably connected with the mounting flange. In this application, the meshing transmission between the gears controls the rotation of the sensor shell, so as to change the direction of the wiring end interface on the sensor shell, expose a larger operation space, and reduce the maintenance difficulty of the wiring end for the workers. Prior art 2 (Chinese patent with application number CN201720902896.1, published on February 23, 2018) is an automobile fuel tank oil quantity sensor, which comprises a through plate, a throttle hole, a sensor, a signal output IC chip, a connecting screw rod, a protective sleeve, a fixed plate, a connecting frame and an oil float. The throttle hole is embedded in the outer surface of the through plate. The sensor is fixedly welded to the left end surface of the through plate. The through plate is internally provided with a cavity. The signal output IC chip is fixedly connected in the internal cavity of the through plate. The signal output IC chip is composed of an integrated circuit plastic base, a connecting end and a metal connecting pin. The connecting end is embedded in the rear end surface of the integrated circuit plastic base. The utility model can convert the change amount of the liquid level into linear output or directly send the detection information to the remote monitoring system through wireless transmission during the inductive detection of the oil quantity of the fuel tank, so that the user can know the real-time height of the liquid level and timely adjust it, effectively improving the practical performance and intelligent degree of the equipment.

[0004] Although the current sensor can realize the detection of the oil quantity, when the vehicle goes uphill or is inclined, the oil surface is inclined, which leads to a large change in the detection, affects the stability of the oil detection, and when the vehicle runs on complex road conditions or off-road, the shaking range of the oil tank is obviously increased, the buoyancy moving part in the sensor continuously moves in a large range, which on one hand aggravates the wear and tear and reduces the service life, and on the other hand easily leads to the splashing of the oil to the probe part of the sensor, thereby reducing the detection sensitivity of the sensor. SUMMARY

[0005] The present application aims to provide an automobile fuel oil quantity monitoring sensor to solve the problem that when the vehicle goes uphill or is inclined, the oil surface is inclined, which leads to a large change in the detection, affects the stability of the oil detection, and when the vehicle runs on complex road conditions or off-road, the shaking range of the oil tank is obviously increased, the buoyancy moving part in the sensor continuously moves in a large range, which on one hand aggravates the wear and tear and reduces the service life, and on the other hand easily leads to the splashing of the oil to the probe part of the sensor, thereby reducing the detection sensitivity of the sensor.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: an automobile fuel oil quantity monitoring sensor, comprising a mounting head connected with an oil tank and a wire harness interface arranged on the side of the mounting head, a connecting seat is fixed below the mounting head, a mounting seat is arranged below the connecting seat, a hollow detection rod is connected below the mounting seat, the lower end of the detection rod is designed in an open structure, a counterweight is connected to the lower end of the detection rod, an active ball is fixed above the mounting seat, the active ball and the mounting seat are rotationally connected, the setting of the counterweight cooperates with the active ball to enable the detection rod to maintain a vertical state, the detection rod can be corrected when the oil surface is inclined, so that the detection rod can always be perpendicular to the liquid surface, the stability of the detection is maintained, a float is slidably arranged in the detection rod, a measurement sensor is arranged above the float, the measurement sensor is installed in the mounting seat, a connecting ring is arranged below the measurement sensor, an active control mechanism is arranged above the float, and the active control mechanism controls the upward movement of the float to close the connecting ring.

[0007] Further optimization of the technical scheme, a stop block is arranged below the detection rod to block the maximum downward movement distance of the float, and a sealing gasket is fixed to the upper surface of the float.

[0008] Further optimization of the technical scheme, a lengthening mechanism is arranged between the mounting seat and the detection rod to adjust the oil detection depth of the detection rod.

[0009] Further optimization of the technical scheme, the lengthening mechanism comprises a lengthening rod, a connecting head and a connecting groove. The lengthening rod is arranged between the mounting base and the detection rod; The connecting head is arranged below the mounting base and the lengthening rod; The connecting groove is arranged above the detection rod and the lengthening rod, and the connecting groove and the connecting head are in threaded connection.

[0010] Further optimization of the technical solution, the lengthening rod includes a first docking cover, a second docking cover, a positioning block and a positioning groove, the first docking cover and the second docking cover are arranged symmetrically, the surface of the first docking cover is fixed with the positioning block, and the surface of the second docking cover is provided with the positioning groove matched with the first positioning block.

[0011] Further optimization of the technical solution, the active control mechanism includes a control rope, a winding shaft and a driving mechanism; The control rope is fixed above the floating block; The winding shaft is rotatably arranged in the mounting base, and the upper end of the control rope is connected with the winding shaft; The driving mechanism is connected with the winding shaft to control the rotation of the winding shaft.

[0012] Further optimization of the technical solution, the driving mechanism includes a transmission gear, an engaging gear and a motor; The transmission gear is fixed on the surface of the winding shaft; The engaging gear is arranged outside the transmission gear and is engaged with the transmission gear; The motor is connected with the engaging gear to control the rotation of the engaging gear.

[0013] Further optimization of the technical solution, the end of the winding shaft is provided with a torsion spring, and the elastic force of the torsion spring is smaller than the gravity of the floating block.

[0014] Further optimization of the technical solution, the connecting ring is penetrated by a movable rod, and a limiting mechanism is arranged above the movable rod to limit the rotation state of the movable ball.

[0015] Further optimization of the technical solution, the limiting mechanism includes a first spring, a trigger block, a limiting block and a second spring; The first spring is arranged above the movable rod to provide downward tension for the movable rod, and the upper end of the movable rod is designed in an enlarged structure; The trigger block is arranged above the movable rod, the inner end of the trigger block is designed in an inclined structure, and the trigger block and the movable ball are in sliding connection; The limiting block is fixed to the outer end of the trigger block; The second spring is arranged outside the limiting block to provide inward moving thrust for the limiting block.

[0016] Compared with the prior art, the beneficial effects of the present application are: (1) The floating block is driven to move vertically by the oil body liquid surface buoyancy, and the oil body liquid surface is monitored in cooperation with the measuring sensor. The floating block moves in the hollow area of the detection rod, which can reduce the influence of the external oil body liquid surface on the floating block, and the detection is more stable. At the same time, the measuring sensor is located in the mounting seat and does not contact the oil body. The oil body does not have a circuit structure, and the operation is safer.

[0017] (2) The detection rod can be kept in a vertical state by the counterweight and the movable ball. When the oil body liquid surface is inclined, the detection rod can be corrected, so that the detection rod can always be perpendicular to the liquid surface and keep the detection stable.

[0018] (3) The floating block can be controlled to move upward by the active control mechanism. When driving off-road or on a bumpy road section, the floating block can be positioned by controlling the upward movement of the floating block. At the same time, the floating block can shield the connecting ring to avoid subsequent floating blocks from continuously moving, reduce the wear of the floating blocks, and reduce the loss. At the same time, the upward movement of the floating block can shield and protect the measuring sensor, avoiding oil splashing onto the surface of the measuring sensor.

[0019] (4) The detection depth of the detection rod can be lengthened by the extension rod, and the oil tank depth detection distance of the adjusting device can be adjusted, so that the device can adapt to the use of oil tanks of different depths and be more flexible, increasing its functionality.

[0020] (5) The rotation of the movable ball can be limited by the limiting block, so that the movable ball remains stable in its state. The control of the limiting block comes from the movement of the floating block. After the auxiliary block shields the connecting ring, the limiting block automatically triggers to limit the movable ball. Subsequent violent shaking does not cause the movable ball to rotate. DETAILED DESCRIPTION

[0021] Figure 1 It is a perspective structural diagram of the present application.

[0022] Figure 2 It is a perspective structural diagram of the present application.

[0023] Figure 3 It is a perspective structural diagram of the present application.

[0024] Figure 4 It is a perspective structural diagram of the present application.

[0025] Figure 5 It is a perspective structural diagram of the present application.

[0026] Figure 6 It is a perspective structural diagram of the present application.

[0027] Figure 7 It is a perspective structural diagram of the present application.

[0028] Figure 8 It is the main profile structure schematic diagram of the application.

[0029] Figure 9 It is the main profile structure schematic diagram of the mounting seat of the application.

[0030] Figure 10 It is the three-dimensional structure schematic diagram of the winding shaft of the application.

[0031] Figure 11 It is the side profile structure schematic diagram of the limiting block of the application.

[0032] In the figure: 1, mounting head; 2, wire harness interface; 3, connecting seat; 4, mounting seat; 5, detection rod; 6, extension rod; 601, first docking cover; 602, second docking cover; 603, positioning block; 604, positioning groove; 7, counterweight; 8, movable ball; 9, float; 901, sealing gasket; 10, stop block; 11, measurement sensor; 12, connecting ring; 13, control rope; 14, winding shaft; 15, torsion spring; 16, transmission gear; 17, meshing gear; 18, motor; 19, movable rod; 20, first spring; 21, trigger block; 22, limiting block; 23, second spring; 24, connecting head; 25, connecting groove. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0034] Embodiment one: the application provides the following technical solution: a vehicle fuel oil quantity monitoring sensor, such as Figures 1-5 and Figures 8-9As shown, the installation head 1 connected with the oil tank and the wire harness interface 2 arranged on the side of the installation head 1, the lower part of the installation head 1 is fixed with a connecting seat 3, and the lower part of the connecting seat 3 is provided with a mounting seat 4, the lower part of the mounting seat 4 is connected with a hollow detection rod 5, the lower end of the detection rod 5 is designed in an open structure, and the lower end of the detection rod 5 is connected with a counterweight 7, the upper part of the mounting seat 4 is fixed with a movable ball 8, and the movable ball 8 and the mounting seat 4 are rotatably connected, the inside of the detection rod 5 is slidably provided with a float 9, the upper part of the float 9 is provided with a measurement sensor 11, the measurement sensor 11 is installed in the inside of the mounting seat 4, and the lower part of the measurement sensor 11 is provided with a connecting ring 12, the upper part of the float 9 is provided with a positive control mechanism, the positive control mechanism controls the float 9 to move upward to close the connecting ring 12, the lower part of the detection rod 5 is provided with a stop block 10 to block the maximum downward movement distance of the float 9, and the upper surface of the float 9 is fixed with a sealing gasket 901.

[0035] In use, the installation head 1 can be installed on the oil tank, the detection rod 5 is inserted into the inside of the oil tank, the wire harness interface 2 is connected with the external wire harness, the inside circuit of the installation head 1 is controlled, the oil in the oil tank can enter the lower end of the detection rod 5, and the oil drives the float 9 to move upward by buoyancy, and the position change of the float 9 is monitored by the measurement sensor 11, so as to reflect the oil quantity of the oil tank, and when the oil tank is inclined, the counterweight 7 can correct the detection rod 5 by providing a downward force for the detection rod 5, as shown in Figure 8 The movable ball 8 rotates in the connecting seat 3, so that the detection rod 5 and the oil body remain vertical.

[0036] Example two: based on example one, as shown in Figures 6-7 Further disclosed is that a lengthening mechanism is arranged between the mounting seat 4 and the detection rod 5, the oil detection depth of the detection rod 5 is adjusted, the lengthening mechanism comprises a lengthening rod 6, a connecting head 24 and a connecting groove 25, the lengthening rod 6 is arranged between the mounting seat 4 and the detection rod 5, the connecting head 24 is arranged below the mounting seat 4 and the lengthening rod 6, the connecting groove 25 is opened above the detection rod 5 and the lengthening rod 6, and the connecting groove 25 and the connecting head 24 are threadedly connected, the lengthening rod 6 comprises a first docking cover 601, a second docking cover 602, a positioning block 603 and a positioning groove 604, the first docking cover 601 and the second docking cover 602 are arranged in a symmetrical manner, the surface of the first docking cover 601 is fixed with the positioning block 603, and the surface of the second docking cover 602 is provided with the positioning groove 604 which is concave-convex matched with the first positioning block 603.

[0037] The detection depth of the detection rod 5 can be adjusted by the lengthening mechanism, when the lengthening mechanism is used, the connection between the detection rod 5 and the mounting seat 4 can be first released, and Figure 7As shown, the first docking cover 601 and the second docking cover 602 are spliced by the connection of the positioning block 603 and the positioning groove 604, and are enclosed between the mounting seat 4 and the detection rod 5, then the connection groove 25 on the first docking cover 601 and the second docking cover 602 and the connecting head 24 below the mounting seat 4 are connected, and the connecting head 24 below the first docking cover 601 and the second docking cover 602 and the connecting groove 25 above the detection rod 5 are connected, and multiple detection rods 5 can also be spliced in the same way.

[0038] Example three: on the basis of example one, as shown in Figures 9-11 As shown, the active control mechanism further comprises a control rope 13, a winding shaft 14 and a driving mechanism. The control rope 13 is fixed above the floating block 9. The winding shaft 14 is rotatably installed inside the mounting seat 4, and the upper end of the winding shaft 14 is connected with the control rope 13. The driving mechanism is connected with the winding shaft 14 to control the rotation of the winding shaft 14. The driving mechanism comprises a transmission gear 16, an engaging gear 17 and a motor 18. The transmission gear 16 is fixed on the surface of the winding shaft 14. The engaging gear 17 is arranged outside the transmission gear 16 and is engaged with the transmission gear 16. The motor 18 is connected with the engaging gear 17 to control the rotation of the engaging gear 17. The end of the winding shaft 14 is provided with a torsion spring 15, and the elastic force of the torsion spring 15 is smaller than the gravity of the floating block 9. The inside of the connecting ring 12 penetrates an movable rod 19, and the upper part of the movable rod 19 is provided with a limiting mechanism to limit the rotation state of the movable ball 8. The limiting mechanism comprises a first spring 20, a trigger block 21, a limiting block 22 and a second spring 23. The first spring 20 is arranged above the movable rod 19 to provide a downward pulling force for the movable rod 19. The upper end of the movable rod 19 is designed in an enlarged structure. The trigger block 21 is arranged above the movable rod 19, and the inner end of the trigger block 21 is designed in an inclined structure. The trigger block 21 and the movable ball 8 are in sliding connection. The limiting block 22 is fixed to the outer end of the trigger block 21. The second spring 23 is arranged outside the limiting block 22 to provide an inward moving thrust for the limiting block 22.

[0039] When the vehicle enters a bumpy or off-road, as shown in Figure 10 The motor 18 can control the rotation of the engaging gear 17. The engaging gear 17 drives the winding shaft 14 to rotate through the engagement with the transmission gear 16. The winding shaft 14 winds the control rope 13. The control rope 13 pulls the floating block 9 to move upward, so that the floating block 9 closes the connecting ring 12 to protect the measurement sensor 11. At the same time, the floating block 9 extrudes the movable rod 19. As shown in Figure 11 The movable rod 19 moves upward to extrude the trigger block 21, so that the trigger block 21 pushes the limiting block 22 to move. The limiting block 22 extends to connect with the connecting seat 3, limits the rotation of the movable ball 8, and keeps the stable state.

[0040] The contents not described in detail in the specification belong to the prior art known to those skilled in the art.

[0041] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "set", "install" and the like connecting words should be understood in a broad sense, for example, can be fixedly connected, can also be detachably connected, or integrally connected; can be mechanically connected, can also be electrically connected; can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0042] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A fuel level monitoring sensor for an automobile, comprising a mounting head (1) connected to a fuel tank and a wiring harness interface (2) provided on a side of the mounting head (1); Its characteristics are: A connecting seat (3) is fixed below the mounting head (1), and a mounting seat (4) is provided below the connecting seat (3). A hollow detection rod (5) is connected below the mounting seat (4). The lower end of the detection rod (5) is designed as an open structure, and the lower end of the detection rod (5) is connected to a counterweight (7). A movable ball (8) is fixed above the mounting seat (4), and a rotation connection is formed between the movable ball (8) and the mounting seat (4). A floating block (9) is slidingly provided inside the detection rod (5), and a measuring sensor (11) is provided above the floating block (9). The measuring sensor (11) is installed inside the mounting seat (4), and a connecting ring (12) is provided below the measuring sensor (11). An active control mechanism is provided above the floating block (9), and the active control mechanism controls the floating block (9) to move upward to close the connecting ring (12).

2. The automobile fuel level monitoring sensor according to claim 1, characterized in that: A stopper (10) is provided below the detection rod (5) to block the maximum downward movement distance of the floating block (9), and a sealing gasket (901) is fixed on the upper surface of the floating block (9).

3. The automobile fuel level monitoring sensor according to claim 1, characterized in that: An extension mechanism is provided between the mounting seat (4) and the detection rod (5) to adjust the oil body detection depth of the detection rod (5).

4. The automobile fuel level monitoring sensor according to claim 3, characterized in that: The extension mechanism comprises an extension rod (6), a connecting head (24) and a connecting groove (25); An extension rod (6) is arranged between the mounting seat (4) and the detection rod (5); A connector (24) is disposed below the mounting base (4) and the extension rod (6); The connecting groove (25) is provided above the detection rod (5) and the extension rod (6), and a threaded connection is formed between the connecting groove (25) and the connector (24).

5. The automobile fuel level monitoring sensor according to claim 4, characterized in that: The extension rod (6) comprises a first docking cover (601), a second docking cover (602), a positioning block (603) and a positioning groove (604); the first docking cover (601) and the second docking cover (602) are symmetrically arranged; the positioning block (603) is fixed on the surface of the first docking cover (601); and the positioning groove (604) is provided on the surface of the second docking cover (602) and is concavely matched with the positioning block (603).

6. The automobile fuel level monitoring sensor according to claim 1, characterized in that: The active control mechanism comprises a control rope (13), a reel (14) and a driving mechanism; A control rope (13) is fixed above the floating block (9); A reel (14) is rotatably mounted inside the mounting seat (4), and the reel (14) is connected to the upper end of the control rope (13); The driving mechanism is connected to the reel (14) to control the rotation of the reel (14).

7. The automobile fuel level monitoring sensor according to claim 6, characterized in that: The driving mechanism includes a transmission gear (16), a meshing gear (17) and a motor (18); A transmission gear (16) is fixed to the surface of the reel (14); a meshing gear (17) disposed on the outer side of the transmission gear (16) and meshing with the transmission gear (16); The motor (18) is connected to the meshing gear (17) to control the rotation of the meshing gear (17).

8. The automobile fuel level monitoring sensor according to claim 7, characterized in that: A torsion spring (15) is provided at the end of the reeling shaft (14), and the elastic force of the torsion spring (15) is smaller than the gravity of the floating block (9).

9. The automobile fuel level monitoring sensor according to claim 1, characterized in that: A movable rod (19) is passed through the interior of the connecting ring (12), and a limiting mechanism is provided above the movable rod (19) to limit the rotation state of the movable ball (8).

10. The automobile fuel level monitoring sensor according to claim 9, characterized in that: The limiting mechanism comprises a first spring (20), a trigger block (21), a limiting block (22) and a second spring (23); A first spring (20) is arranged above the movable rod (19) to provide a downward pulling force for the movable rod (19), and the upper end of the movable rod (19) is designed to be an enlarged structure; A trigger block (21) is arranged above the movable rod (19), and the inner end of the trigger block (21) is designed to be inclined, and a sliding connection is formed between the trigger block (21) and the movable ball (8); A limit block (22) is fixed to the outer end of the trigger block (21); The second spring (23) is arranged on the outer side of the limiting block (22) to provide a thrust for the limiting block (22) to move inward.

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