Floating ball structure for automobile brake liquid level sensor

Abstract

The utility model provides a floating ball structure for an automobile brake liquid level sensor, which comprises an upper cover with a port, a lower cover with a port and a magnetic steel block, an ultrasonic welding groove is arranged at the port of the upper cover, an ultrasonic welding wire is arranged at the port of the lower cover, and the magnetic steel block is arranged in the ultrasonic welding groove. The port of the upper cover and the port of the lower cover are welded with an ultrasonic welding wire through an ultrasonic welding groove, and the magnetic steel blocks are accommodated in the upper cover and the lower cover; the magnetic steel blocks are pressed into the upper cover and the lower cover through ultrasonic technology sealing, the welding sealing performance of welding grooves and welding wire tenons at the welding positions is high, oil cannot enter the magnetic steel blocks, the wall thickness of the upper cover and the lower cover and the size of reinforcing ribs are easy to adjust, and design of the weight of the floating ball can be greatly facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile accessories, in particular to a floating ball structure for an automobile brake liquid level sensor. Background Art

[0002] The brake fluid level sensor of the car is mainly used to detect the brake fluid level and convert the change of the fluid level into an electrical signal, which is then provided to the relevant electronic control system or brake fluid level display system. When the brake fluid level is lower than the set value, the relevant system will sound an alarm to remind the driver to add brake fluid in time.

[0003] The function of the brake fluid level sensor is to ensure the normal operation of the brake system. If the brake fluid is insufficient, it may lead to poor braking effect and affect driving safety. Therefore, the driver should check the brake fluid level regularly to ensure that it is within the normal range. The existing brake fluid float tank float ball process is PP foaming, and its magnetic steel is plastic-coated and leaks in the liquid. There is a risk of rust due to long-term contact with the liquid; second, the injection molding foaming process float ball has poor weight consistency, and the weight deviation is about ±0.2g, which affects the buoyancy of the float ball and thus affects the accuracy of the alarm height; third, the float ball cannot withstand pressure. If there is a high pressure of 0.2MPa for a long time (12h) or 0.6MPa for a short time (30S) in the water tank, the float ball may enter the oil, resulting in an increase in its own weight and inability to float, and finally the water tank false alarm.

[0004] In view of this, it is necessary to provide a novel float structure for automobile brake fluid level sensor to overcome the above-mentioned defects. Utility Model Content

[0005] The utility model aims to provide a float structure for a brake fluid level sensor for automobiles, which will not rust and adopts ultrasonic sealing technology to press the magnetic steel block into the upper cover and the lower cover. The welding groove and the welding line tenon welding at the welding place have strong sealing performance and will not enter oil.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a float structure for a brake fluid level sensor for an automobile, comprising: an upper cover with a port, a lower cover with a port and a magnetic steel block, the port of the upper cover is provided with an ultrasonic welding groove, the port of the lower cover is provided with an ultrasonic welding wire, the port of the upper cover and the port of the lower cover are welded by the ultrasonic welding groove and the ultrasonic welding wire and the magnetic steel block is accommodated in the upper cover and the lower cover.

[0007] Preferably, the upper cover is provided with a mounting groove, and the magnetic steel block is accommodated in the mounting groove.

[0008] Preferably, a cross-shaped reinforcing rib is formed in the installation groove.

[0009] Preferably, arc-shaped ribs are formed on the inner wall of the lower cover.

[0010] Preferably, the side edge of the upper cover is recessed to form a guide groove, and the guide groove is protruded to form an anti-skew rib.

[0011] Preferably, the number of the arc-shaped ribs is four, and the height of the four arc-shaped ribs is 0.1 mm.

[0012] Compared with the prior art, the beneficial effect is that it will not rust, and the ultrasonic process is used to seal the magnetic steel block to the inside of the upper cover and the lower cover. The welding groove and the welding line tenon welding at the welding point have strong sealing properties and will not allow oil to enter. The wall thickness and reinforcement ribs of the upper cover and the lower cover are easy to adjust in size, which can greatly facilitate the design of the float weight.

[0013] Other features and advantages of the utility model will be stated in the following description, and some will be apparent from the description, or can be understood through the implementation of the utility model. The features and advantages of the utility model can be realized and obtained by the elements and combinations specifically pointed out in the attached application scope. These and other features of the utility model will become more clearly understood according to the following description and the attached claims, or can be understood through the implementation of the embodiments described in the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 The utility model is an exploded view of the float structure for the automobile brake fluid level sensor.

[0016] Figure 2 for Figure 1 The exploded view of the float structure used in the automobile brake fluid level sensor shown is another perspective.

[0017] Figure 3 for Figure 1 A cross-sectional view of a float structure for a brake fluid level sensor for an automobile is shown.

[0018] Figure 4 for Figure 3 Magnified view of region A is shown.

[0019] Figure numerals: 1. upper cover; 11. ultrasonic welding groove; 12. mounting groove; 13. reinforcing rib; 2. lower cover; 21. ultrasonic welding line; 22. arc rib; 3. magnetic steel block. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and beneficial technical effect of the utility model clearer, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementation methods described in this specification are only for explaining the utility model, and are not intended to limit the utility model.

[0021] It should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] It should also be noted that, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be determined according to the specific circumstances.

[0023] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features. In addition, the meaning of "multiple" and "several" refers to two or more, unless otherwise clearly and specifically defined.

[0024] The brake fluid level sensor usually consists of a sensor body, a float and a metal shell. When the fluid level changes, the float moves up and down, thereby changing the closing or opening of the reed switch contacts in the sensor body and outputting a corresponding electrical signal.

[0025] The principle of reed switch level measurement is based on the interaction of magnetic field on electric current and the physical properties of liquid. In liquid level measurement, reed switch is usually used with float. When the liquid level changes, the float moves up and down, thus changing the magnetic field around the reed switch. This change causes the contacts in the reed switch to close or open, thereby outputting the corresponding electrical signal.

[0026] Specifically, when the liquid level rises, the float rises with it, causing the magnetic field around the reed switch to change. This change causes the contacts in the reed switch to close and output a corresponding electrical signal. When the liquid level drops, the float drops with it, the magnetic field changes, the contacts open, and an electrical signal is output. The reed switch method of measuring liquid level has the advantages of simple structure, stable performance, and high accuracy.

[0027] See also Figures 1 to 4 The utility model provides a float structure for a brake fluid level sensor for an automobile, comprising: an upper cover 1 with a port, a lower cover 2 with a port, and a magnetic steel block 3, wherein an ultrasonic welding groove 11 is provided at the port of the upper cover 1, and an ultrasonic welding line 21 is provided at the port of the lower cover 2, and the port of the upper cover 1 and the port of the lower cover 2 are welded through the ultrasonic welding groove 11 and the ultrasonic welding line 21, and the magnetic steel block 3 is accommodated in the upper cover 1 and the lower cover 2. It should be noted that in this embodiment, the upper cover 1 and the lower cover 2 are both made of plastic.

[0028] In a preferred embodiment, the upper cover 1 is provided with a mounting groove 12, and the magnetic steel block 3 is received in the mounting groove 12, so as to stably mount the magnetic steel block 3 on the upper cover 1. In a preferred embodiment, a cross-shaped reinforcing rib 13 is formed in the mounting groove 12, which is conducive to enhancing the strength of the mounting groove 12 and the upper cover 1.

[0029] In a preferred embodiment, the side of the upper cover 1 is recessed to form a guide groove 14, and the guide groove 14 is raised to form an anti-skew rib 141. When in use, the float moves up and down in the guide groove 14, and the anti-skew rib 141 can prevent the float from tilting outward when moving up and down in the guide groove 14. In a preferred embodiment, arc ribs 22 are formed on the inner wall of the lower cover 2, and the arc ribs 22 are distributed corresponding to the installation groove 12. The arc ribs 22 are used to squeeze the magnetic steel block 3 so as to press the magnetic steel block 3 tightly and accommodate it in the installation groove 12. It should be noted that in this embodiment, the number of the arc ribs 22 is four, and the height of the four arc ribs 22 is 0.1 mm.

[0030] When in use, the float structure of the automobile brake fluid level sensor is used together with the liquid level gauge and the float. The float structure of the automobile brake fluid level sensor adopts ultrasonic technology to seal the magnetic steel block 3 to be pressed into the upper cover 1 and the lower cover 2. The welding groove and the welding line tenon welding at the welding point have strong sealing performance. The wall thickness of the upper cover 1 and the lower cover 2 and the reinforcing ribs 13 are easy to adjust the size, which can greatly facilitate the design of the float weight.

[0031] The present invention is not limited to what is described in the specification and implementation modes, and therefore, additional advantages and modifications can be easily realized by those familiar with the art. Therefore, without departing from the spirit and scope of the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details, representative devices, and illustrative examples shown and described herein.

Claims

1. A float structure for a brake fluid level sensor for an automobile, characterized in that: include: An upper cover (1) having a port, a lower cover (2) having a port, and a magnetic steel block (3), wherein an ultrasonic welding groove (11) is provided at the port of the upper cover (1), and an ultrasonic welding line (21) is provided at the port of the lower cover (2); the port of the upper cover (1) and the port of the lower cover (2) are welded through the ultrasonic welding groove (11) and the ultrasonic welding line (21), and the magnetic steel block (3) is accommodated in the upper cover (1) and the lower cover (2).

2. The float structure for a brake fluid level sensor for an automobile as claimed in claim 1, characterized in that: The upper cover (1) is provided with a mounting groove (12), and the magnetic steel block (3) is accommodated in the mounting groove (12).

3. The float structure for the automobile brake fluid level sensor according to claim 2, characterized in that: A cross-shaped reinforcing rib (13) is formed in the installation groove (12).

4. The float structure for the automobile brake fluid level sensor according to claim 2, characterized in that: The side edge of the upper cover (1) is recessed to form a guide groove (14), and the guide groove (14) is protruded to form an anti-skew rib (141).

5. The float structure for a brake fluid level sensor for an automobile as claimed in claim 1, characterized in that: Arc-shaped ribs (22) are formed on the inner wall of the lower cover (2).

6. The float structure for the automobile brake fluid level sensor according to claim 5, characterized in that: The number of the arc-shaped ribs (22) is four, and the height of the four arc-shaped ribs (22) is 0.1 mm.

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