Oil level gauge

Abstract

The utility model discloses an oil level gauge which comprises a gauge cover, a connecting piece and a ruler. The ruler cover is rotatably connected with the connecting piece, and the rotation range of the ruler cover comprises a first position and a second position; an air pressure through hole is formed in the connecting piece in the axial direction of the connecting piece. When the ruler cover is located at the first position, the ruler cover opens the air pressure through hole; when the ruler cover is located at the second position, the ruler cover blocks the air pressure through hole; the ruler is fixedly connected to one end, far away from the ruler cover, of the connecting piece; a measuring through hole is formed in the scale in the axial direction of the scale, and the measuring through hole is communicated with the air pressure through hole. According to the utility model, engine oil is accommodated after the measuring through hole arranged in the scale is inserted into an engine, and when the scale is pulled out, the scale cover is matched with the connecting piece to block one end of the measuring through hole, so that the engine oil is remained in the scale. And the position of the engine oil can be observed through the observation window arranged at the end part of the scale, so that repeated operation required for observing the position of the engine oil is reduced.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts, and in particular to an oil dipstick. Background Technology

[0002] During engine operation, it's necessary to periodically check the engine oil level. Currently, the primary method is to use a dipstick, inserting a guide tube into the engine and observing the oil residue left on the dipstick to determine the oil level. However, when removing the dipstick, it's easy for it to rub against the inner wall of the guide tube due to handling, leading to discrepancies between the observed residue and the actual oil level. This requires repeatedly cleaning and inserting the dipstick to confirm the oil level, making the process rather cumbersome. Utility Model Content

[0003] The purpose of this invention is to provide an oil dipstick that allows for direct observation of the oil level by simply pulling it out, avoiding repeated pulling and measuring and reducing operational steps.

[0004] To solve the above-mentioned technical problems, this utility model provides an oil dipstick, including a dipstick cap, a connector and a scale;

[0005] The ruler cap is rotatably connected to the connector, and the rotation range of the ruler cap includes a first position and a second position;

[0006] The connector has an air pressure through hole along its axial direction.

[0007] When the ruler cover is in the first position, the ruler cover opens the air pressure passage, and the air pressure inside the air pressure passage is balanced with the outside.

[0008] When the ruler cover is in the second position, the ruler cover blocks the air pressure passage, and the air pressure inside the air pressure passage remains unchanged;

[0009] The ruler is fixedly connected to the end of the connector away from the ruler cover;

[0010] The scale has a measuring through hole inside along its axial direction, and the measuring through hole is connected to the air pressure through hole.

[0011] Furthermore, a pull ring is provided on the side of the ruler cover away from the connector.

[0012] Furthermore, a pair of limiting grooves are provided on the inner side wall of the ruler cover.

[0013] Furthermore, the limiting groove spirals upward along the inner wall of the ruler cover to control the tightness between the ruler cover and the connecting piece when the ruler cover rotates.

[0014] Furthermore, each of the limiting grooves is provided with two positioning notches to determine the first position and the second position.

[0015] Furthermore, the ruler cap has a sealing gasket on the plane near the connector.

[0016] Furthermore, the connector has two protruding sliders arranged in pairs facing the inner wall of the ruler cover, which are used to limit the rotation angle of the ruler cover in conjunction with the limiting groove.

[0017] Furthermore, an observation window is provided on the side of the dipstick near the oil.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects:

[0019] This invention utilizes a measuring through-hole within the dipstick to hold engine oil after insertion into the engine. Through a dipstick cap and connector, one end of the measuring through-hole is blocked when the dipstick is pulled out, allowing the oil to remain within the dipstick under atmospheric pressure. The oil level can then be directly observed through a viewing window at the end of the dipstick, reducing the need for repeated operations and improving the accuracy of oil level measurement. Furthermore, the transparent viewing window allows for assessment of the color and condition of the oil within the measuring through-hole, indicating whether a complete oil change is necessary. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the oil dipstick structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the ruler cover installation structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the scale structure of this utility model. Detailed Implementation

[0023] The oil dipstick of this utility model will now be described in more detail with reference to the accompanying drawings, which illustrate preferred embodiments of the utility model. It should be understood that those skilled in the art can modify the utility model described herein while still achieving its advantageous effects. Therefore, the following description should be understood as being of general knowledge to those skilled in the art and is not intended to limit the utility model.

[0024] The present invention will be described more specifically by way of example in the following paragraphs with reference to the accompanying drawings. The advantages and features of the present invention will become clearer from the following description and claims. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0025] like Figure 1 As shown, this utility model embodiment proposes an oil dipstick, including a dipstick cover 1, a connector 2, and a scale 3;

[0026] The ruler cover 1 is rotatably connected to the connector 2, and the rotation range of the ruler cover 1 includes a first position and a second position;

[0027] The connector 2 has an air pressure through hole 4 along its axial direction.

[0028] When the ruler cover 1 is in the first position, the ruler cover 1 opens the air pressure passage 4, and the air pressure inside the air pressure passage 4 is kept in balance with the outside.

[0029] When the ruler cover 1 is in the second position, the ruler cover 1 blocks the air pressure passage 4, and the air pressure inside the air pressure passage 4 remains unchanged.

[0030] The ruler 3 is fixedly connected to the end of the connector 2 away from the ruler cover 1;

[0031] The scale 3 has a measuring through hole 5 inside along its axial direction, and the measuring through hole 5 is connected to the air pressure through hole 4.

[0032] In this embodiment, the operator needs to remove the dipstick from the engine to observe the oil level. First, rotate the dipstick cap 1 from the first position to the second position, sealing the pressure through-hole 4 and preventing the air pressure inside the measuring through-hole 5, which is connected to the pressure through-hole 4, from communicating with the outside. Then, directly pull out the dipstick. During this process, the oil level in the measuring through-hole 5 falls under the influence of gravity, while the air pressure inside the measuring through-hole 5 increases, causing the air pressure to decrease. Under the influence of atmospheric pressure, the oil column in the measuring through-hole 5 remains in a fixed position. Since the oil is inside the dipstick 3 when the dipstick is pulled out, it will not hook onto the inner wall of the guide tube during extraction, allowing direct observation of the oil level to confirm the oil level in the engine. After measurement, insert the dipstick back into its original channel, and then rotate the dipstick cap 1 from the second position to the first position, releasing the air pressure inside the measuring through-hole 5 and balancing the air pressure inside and outside the through-hole.

[0033] In actual operation, in order to facilitate the operator to rotate and pull out the dipstick, a pull ring 6 is provided on the side of the dipstick cover 1 away from the connector 2.

[0034] like Figure 2 As shown, a pair of limiting grooves 7 are provided on the inner side wall of the ruler cover 1.

[0035] Furthermore, the connector 2 has two protruding sliders 8 arranged in pairs facing the inner wall of the ruler cover 1, which are used to limit the rotation angle of the ruler cover 1 in conjunction with the limiting groove 7.

[0036] Specifically, the ruler cover 1 is fastened to one end of the connector 2, and the end of the connector 2 is covered by the ruler cover 1. A raised slider 8 is provided on the inner wall of the part of the connector 2 that is covered. A limiting groove 7 is provided on the inner wall of the ruler cover 1. During installation, the slider 8 is installed into the limiting groove 7, so that the slider 8 can move in the direction of the limiting groove 7 within the limiting groove 7, and the rotation angle of the ruler cover 1 is limited.

[0037] Furthermore, the limiting groove 7 spirals upward along the inner wall of the ruler cover 1 to control the tightness between the ruler cover 1 and the connecting piece 2 when the ruler cover 1 rotates.

[0038] Therefore, when the ruler cover 1 rotates to the first position, the slider 8 is located at the bottom of the limiting groove 7, and there is a certain gap between the ruler cover 1 and the connecting piece 2. When the ruler cover 1 rotates to the second position, the slider 8 moves to the top along with the limiting groove 7. At this time, the ruler cover 1 is in close contact with the connecting piece 2, sealing the air pressure through hole 4 provided on the connecting piece 2.

[0039] Furthermore, each of the limiting grooves 7 is provided with two positioning notches 9 for determining the first position and the second position.

[0040] In this embodiment, the air pressure through-hole 4 is open when the ruler cover 1 is in the first position and closed when the ruler cover 1 is in the second position. Therefore, the air pressure through-hole 4 needs to be kept in its current state during operation. Furthermore, since the opening of the air pressure through-hole 4 is located between the ruler cover 1 and the connecting member 2, it is not easy to directly fix its position. Therefore, by setting a positioning notch 9 in the limiting groove 7, the slider 8 moves into position within the limiting groove 7 and enters the positioning notch 9, maintaining the relative position of the ruler cover 1 and the connecting member 2, and maintaining the sealing state of the air pressure through-hole 4.

[0041] Furthermore, the ruler cover 1 is provided with a sealing gasket 10 on the plane facing the connector 2.

[0042] In another embodiment, to ensure the sealing effect of the ruler cover 1 on the air pressure through hole 4 after it moves to the second position, a sealing gasket 10 is provided on the ruler cover 1. The sealing gasket 10 rotates with the ruler cover 1. When the ruler cover 1 rotates to the second position, the ruler cover 1 presses down and fits tightly against the connecting member 2. At this time, the sealing gasket 10 is located between the ruler cover 1 and the connecting member 2, in close contact with the air pressure through hole 4, sealing the air pressure through hole 4. When the ruler cover 1 moves from the second position to the first position, the ruler cover 1 moves upward, creating a gap between it and the connecting member 2. The sealing gasket 10 moves away from above the air pressure through hole 4, and the air pressure through hole 4 is no longer sealed.

[0043] Furthermore, such as Figure 3 As shown, an observation window 11 is provided on the side of the scale 3 near the oil.

[0044] Since the oil level needs to be observed within the measuring hole 5 after the dipstick is pulled out of the engine to confirm its condition, a transparent viewing window 11 is provided on the dipstick 3 near the oil level to facilitate observation. After the dipstick is pulled out, the oil remains at one end of the dipstick 3 under air pressure. The operator can then observe the oil level within the measuring hole 5 through the viewing window 11 to confirm the oil level in the engine. The transparent viewing window 11 also helps the operator determine whether a complete oil change is necessary based on the oil color. If necessary, the oil within the measuring hole 5 can also be used as a sample of the engine oil to analyze internal engine wear.

[0045] Compared with the prior art, the present invention has at least the following beneficial effects:

[0046] This invention utilizes a measuring through-hole within the dipstick to hold engine oil after insertion into the engine. Through a dipstick cap and connector, one end of the measuring through-hole is blocked when the dipstick is pulled out, maintaining a stable oil level under atmospheric pressure. The oil level can then be directly observed through a viewing window at the end of the dipstick, reducing repetitive operations and improving the accuracy of oil level measurement. Furthermore, the transparent viewing window allows for assessment of the color and condition of the oil within the measuring through-hole, indicating whether a complete oil change is necessary.

[0047] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. An oil dipstick, characterized in that, Includes ruler cap, connectors, and scale; The ruler cap is rotatably connected to the connector, and the rotation range of the ruler cap includes a first position and a second position; The connector has an air pressure through hole along its axial direction. When the ruler cover is in the first position, the ruler cover opens the air pressure passage, and the air pressure inside the air pressure passage is balanced with the outside. When the ruler cover is in the second position, the ruler cover blocks the air pressure passage, and the air pressure inside the air pressure passage remains unchanged; The ruler is fixedly connected to the end of the connector away from the ruler cover; The scale has a measuring through hole inside along its axial direction, and the measuring through hole is connected to the air pressure through hole.

2. The oil dipstick as described in claim 1, characterized in that, A pull ring is provided on the side of the ruler cap away from the connector.

3. The oil dipstick as described in claim 2, characterized in that, A pair of limiting grooves are provided on the inner side wall of the ruler cover.

4. The oil dipstick as described in claim 3, characterized in that, The limiting groove spirals upward along the inner wall of the ruler cover to control the tightness between the ruler cover and the connecting piece when the ruler cover rotates.

5. The oil dipstick as described in claim 4, characterized in that, Each of the limiting grooves is provided with two positioning notches to determine the first position and the second position.

6. The oil dipstick as described in claim 1, characterized in that, The ruler cap has a sealing gasket on the plane near the connector.

7. The oil dipstick as described in claim 3, characterized in that, The connector has two protruding sliders facing the inner wall of the ruler cover, which are used to limit the rotation angle of the ruler cover in conjunction with the limiting groove.

8. The oil dipstick as described in claim 1, characterized in that, An observation window is provided at the end of the dipstick closest to the engine oil.

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