Anti-drop lengthened oil level assembly

Abstract

This utility model discloses an extended dipstick assembly designed to prevent detachment, comprising a dipstick guide assembly and an extended dipstick assembly. The dipstick guide assembly includes an operating end, an extended curved section, and an oil port connector. The extended dipstick assembly includes a dipstick plug and an extended dipstick. A pair of elastic buckles are provided on the annular protrusion at the top of the dipstick plug. Each elastic buckle includes a buckle body fixedly connected at its bottom and an elastic buckle arm. The top of the elastic buckle arm is fixedly installed on the annular protrusion, and an arc-shaped locking part is provided in the middle of the elastic buckle arm. An annular locking protrusion is provided on the outer wall of the operating end, and the arc-shaped locking part locks into the lower part of the annular locking protrusion. A stepped limiting through hole is provided in the plug seat of the oil port connector. A limiting plate is provided at the connection between the extended section and the scale section of the extended dipstick. The limiting plate abuts against the second limiting platform of the stepped limiting through hole. This dipstick assembly can prevent the extended dipstick assembly from detaching from the dipstick guide assembly, ensuring measurement accuracy and improving the machining accuracy of the dipstick scale.

Description

Technical Field

[0001] This utility model belongs to the technical field and relates to an oil dipstick assembly, specifically an extended oil dipstick assembly that prevents it from falling off. Background Technology

[0002] In the operation and maintenance of heavy-duty hydraulic automatic transmissions, accurate monitoring of the lubricating oil level is crucial for ensuring stable equipment operation. Currently, a combination of dipstick sampling and electronic oil level sensors is commonly used for detection. Due to the limitations of the commercial vehicle chassis layout on the accessibility of the transmission area, existing engineering practices often employ extended dipstick assemblies with segmented curved dipstick guides. This effectively overcomes the operational difficulties of traditional methods in confined spaces. However, during use, the extended dipstick assembly is prone to deformation when engaging with the curved section of the guide, which can cause the dipstick to detach, leading to decreased transmission sealing. This, in turn, affects oil pressure, allowing dust, moisture, and other impurities to enter the transmission, impacting oil quality and, in severe cases, shortening the transmission's lifespan. Furthermore, the redundant length of the dipstick and deformation at the curved section of the guide can deform the measurement components within the transmission, increasing calibration errors. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an extended dipstick assembly that prevents it from detaching, which can solve the technical problems of existing dipsticks being prone to detaching from the dipstick guide tube and having large scale calibration errors.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: An extended dipstick assembly designed to prevent detachment includes a dipstick guide assembly and an extended dipstick assembly. The extended dipstick assembly is inserted into the dipstick guide assembly. The dipstick guide assembly includes an extended curved section. An operating end is fixedly installed at the top end of the extended curved section, and an oil port connector is fixedly installed at the bottom end of the extended curved section. The extended dipstick assembly includes a dipstick plug and an extended dipstick. The top end of the extended dipstick is fixedly installed at the bottom end of the dipstick plug, and the bottom end of the extended dipstick extends through the extended curved section to the outside of the oil port connector. The top of the dipstick plug is integrally provided with an annular protrusion, and a pair of symmetrically arranged elastic buckles are provided on the annular protrusion. The elastic buckle includes an integrally formed buckle body and an elastic buckle arm. The buckle body is arranged parallel to the axis of the dipstick plug. The top end of the elastic buckle arm is fixedly installed on the annular protrusion, and the bottom end of the elastic buckle arm is connected to the bottom end of the buckle body. The middle part of the elastic buckle arm is provided with an arc-shaped locking part protruding towards the axis of the dipstick plug. The outer wall of the operating end is provided with an annular locking protrusion, and the arc-shaped locking part is locked below the annular locking protrusion.

[0005] This utility model also includes the following technical features: The oil port connector includes a connector base and a measuring guide tube that are coaxially and integrally connected. The connector base has a stepped limiting through hole and a measuring guide through hole that are connected and coaxially arranged along the axial direction. The measuring guide through hole is coaxial with and connected to the measuring guide tube. The stepped limiting through hole has a first limiting platform and a second limiting platform in sequence from top to bottom. The bottom end of the extended curved section is fixedly installed in the first limiting platform. The extended dipstick includes an extended section and a scale section that are coaxially and integrally connected. A limit plate is provided at the connection between the extended section and the scale section. The limit plate abuts against the second limit platform. The bottom end of the scale section passes through the measuring guide hole and the measuring guide tube in sequence and extends out of the measuring guide tube.

[0006] The diameter of the first limiting platform is larger than the diameter of the second limiting platform, and the diameter of the limiting disk is not larger than the diameter of the second limiting platform.

[0007] The length of the extended section is not less than the sum of the lengths of the extended curved section and the stepped limiting through hole.

[0008] The top of the buckle body is provided with an inverted U-shaped pressing arm, and the bottom end of the pressing arm is fixedly connected to the top of the buckle body.

[0009] The dipstick plug has an inverted triangular mounting base at its bottom. The top of the mounting base is fixedly mounted to the bottom of the dipstick plug. A pair of clamping arms are integrally mounted at the bottom of the mounting base. The top of the extended section is fixedly mounted between the pair of clamping arms.

[0010] The scale segment is provided with an upper limit mark and a lower limit mark, and a grid line is provided between the upper limit mark and the lower limit mark.

[0011] The outer wall of the connector is provided with a limiting protrusion and an annular groove along the circumferential direction. The annular groove is located below the limiting protrusion, and an O-ring is installed in the annular groove.

[0012] Compared with the prior art, this utility model has the following technical effects: This invention, through the setting of an elastic buckle, allows for convenient and quick opening and closing of the extended dipstick assembly and the dipstick guide assembly, ensuring a secure connection between the dipstick plug and the operating end. This prevents the extended dipstick assembly from detaching from the dipstick guide assembly during use, ensuring the transmission's sealing performance. Combined with the limiting protrusion ring and O-ring seal on the connector, it effectively prevents dust, moisture, and other impurities from entering the transmission, ensuring oil quality and extending the transmission's service life. The limiting disc on the extended dipstick and the stepped limiting through hole in the oil port plug work together to ensure that the length of the scale segment extending into the transmission remains fixed. The measuring guide through hole and the measuring guide tube assist in guiding the scale segment to remain vertical within the transmission, preventing deformation of the scale segment and thus ensuring the measurement accuracy of the dipstick. In the development of new models, this structure can reduce the difficulty of controlling the precision of the dipstick scale processing, facilitate accurate scale calibration, and improve the accuracy of measurement results. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a perspective view of the extended dipstick assembly of this utility model.

[0015] Figure 3 This is a front view of the extended dipstick assembly of this utility model.

[0016] Figure 4 This is a cross-sectional view of the dipstick guide assembly of this utility model.

[0017] Figure 5 yes Figure 4 Enlarged view of point A in the middle.

[0018] Figure 6 yes Figure 4 Enlarged view of section B in the middle.

[0019] Figure 7 This is a cross-sectional view of the overall structure of this utility model.

[0020] The meanings of the labels in the diagram are as follows: 1. Extended curved section; 2. Operating end; 3. Oil port connector; 4. Oil dipstick plug; 5. Extended oil dipstick; 6. Annular raised edge; 7. Elastic buckle; 8. Annular snap-fit ​​protrusion; 9. Mounting base; 10. O-ring seal. 31. Plug-in socket; 32. Measuring guide tube; 33. Stepped limiting through hole; 34. Measuring guide through hole; 331. First limiting stage; 332. Second limiting stage; 35. Limiting protrusion ring; 36. Annular groove. 51. Extended section; 52. Scale section; 53. Limit dial; 54. Upper limit mark; 55. Lower limit mark; 56. Grid lines; 71. Buckle body; 72. Elastic buckle arm; 73. Arc-shaped snap-fit ​​part; 74. Pressing arm; 91. Clamping arm.

[0021] The specific content of this utility model will be further explained in detail below with reference to the embodiments. Detailed Implementation

[0022] Following the above technical solution, the following are specific embodiments of this utility model. It should be noted that this utility model is not limited to the following specific embodiments, and all equivalent modifications made based on the technical solution of this application fall within the protection scope of this utility model.

[0023] In this utility model, unless otherwise stated, directional terms such as "upper", "lower", "left", and "right" are generally defined based on the drawing in the corresponding figure; "inner" and "outer" refer to the inner and outer contours of the corresponding components; and "longitudinal", "transverse", and "vertical" refer to the directions marked in the figure.

[0024] Example: This embodiment provides an extended dipstick assembly designed to prevent slippage, such as... Figures 1 to 7 As shown, it includes a dipstick guide assembly and an extended dipstick assembly. The extended dipstick assembly is inserted into the dipstick guide assembly. The dipstick guide assembly includes an extended curved section 1. An operating end 2 is fixedly installed at the top end of the extended curved section 1, and an oil port connector 3 is fixedly installed at the bottom end of the extended curved section 1. The extended dipstick assembly includes a dipstick plug 4 and an extended dipstick 5. The top end of the extended dipstick 5 is fixedly installed at the bottom end of the dipstick plug 4, and the bottom end of the extended dipstick 5 passes through the extended curved section 1 and extends out of the oil port connector 3. The top of the dipstick plug 4 is integrally provided with an annular protrusion 6, and a pair of symmetrically arranged elastic buckles 7 are provided on the annular protrusion 6. The elastic buckle 7 includes an integrally provided buckle body 71 and an elastic buckle arm 72. The buckle body 71 is arranged parallel to the axis of the dipstick plug 4. The top end of the elastic buckle arm 72 is fixedly installed on the annular protrusion 6, and the bottom end of the elastic buckle arm 72 is connected to the bottom end of the buckle body 71. The middle part of the elastic buckle arm 72 is provided with an arc-shaped locking part 73 protruding towards the axis of the dipstick plug 4. An annular locking protrusion 8 is provided on the outer wall of the operating end head 2, and the arc-shaped locking part 73 is locked below the annular locking protrusion 8.

[0025] In this embodiment, a pair of elastic buckles 7 use the top of the elastic buckle arm 72 as a fulcrum. By controlling the pair of buckle bodies 71 in opposite directions, the elastic buckle arm 72 is deformed, thereby controlling the opening and closing of the arc-shaped locking part 73 and the annular locking protrusion 8. When the arc-shaped locking part 73 abuts against the bottom of the annular locking protrusion 8, the connection stability between the dipstick plug 4 and the operating end 2 is ensured, preventing the extended dipstick assembly from coming out of the dipstick guide assembly during use and ensuring the sealing of the transmission. The annular protrusion 6 covers the opening of the operating end 2 to prevent dust, moisture and other impurities from entering the transmission. When it is necessary to pull out the extended dipstick assembly, press the pair of buckle bodies 71 in opposite directions to separate the arc-shaped locking part 73 from the annular locking protrusion 8, and pull out the extended dipstick assembly normally. The operation is simple and quick.

[0026] As a preferred embodiment, the oil port connector 3 in this embodiment includes a connector base 31 and a measuring guide tube 32 that are coaxially and integrally connected. The connector base 31 has a stepped limiting through hole 33 and a measuring guide through hole 34 that are connected and coaxially arranged along the axial direction. The measuring guide through hole 34 is coaxial with and connected to the measuring guide tube 32. The stepped limiting through hole 33 has a first limiting platform 331 and a second limiting platform 332 arranged from top to bottom. The bottom end of the extended curved section 1 is fixedly installed in the first limiting platform 331. The extended dipstick 5 includes an extended section 51 and a scale section 52 that are coaxially and integrally connected. A limiting plate 53 is provided at the connection between the extended section 51 and the scale section 52. The limiting plate 53 abuts against the second limiting platform 332. The bottom end of the scale section 52 passes through the measuring guide hole 34 and the measuring guide tube 32 in sequence and extends out of the measuring guide tube 32. The limiting plate 53 can ensure that the length of the scale section 52 extending into the transmission remains fixed. The measuring guide hole 34 and the measuring guide tube 32 help guide the scale section 52 to remain vertical in the transmission, avoid deformation of the scale section 52, and thus ensure the measurement accuracy of the dipstick.

[0027] Furthermore, the diameter of the first limiting platform 331 is larger than the diameter of the second limiting platform 332, and the diameter of the limiting disk 53 is not larger than the diameter of the second limiting platform 332, ensuring that the limiting disk 53 is not blocked by the first limiting platform 331 while being restricted in position by the second limiting platform 332, thereby further ensuring the measurement accuracy of the dipstick.

[0028] Preferably, the length of the extended section 51 is not less than the sum of the lengths of the extended curved section 1 and the stepped limiting through hole 33. Thus, the elastic deformation of the extended section 51 applies downward pressure to the limiting plate 53, preventing the limiting plate 53 from failing to abut against the second limiting platform 332, thereby affecting the measurement accuracy of the dipstick.

[0029] As a preferred embodiment, the top of the buckle body 71 is provided with an inverted U-shaped pressing arm 74. The bottom end of the pressing arm 74 is fixedly connected to the top of the buckle body 71. The pressing arm 74 can increase the contact area between the hand and the elastic buckle 7, making it easier to operate.

[0030] As a preferred embodiment, the bottom of the dipstick plug 4 is provided with an inverted triangular mounting base 9. The top of the mounting base 9 is fixedly mounted on the bottom of the dipstick plug 4. A pair of clamping arms 91 are integrally provided at the bottom of the mounting base 9. The top of the extension section 51 is fixedly mounted between the pair of clamping arms 91. When the extended dipstick 5 is worn out and needs to be replaced, it is easy to replace and the installation stability of the extended dipstick 5 can be improved.

[0031] As a preferred embodiment, the scale segment 52 is provided with an upper limit mark 54 and a lower limit mark 55 to determine whether the oil level in the transmission is at the ideal level. A grid line 56 is provided between the upper limit mark 54 and the lower limit mark 55, and the oil in the transmission can adhere to the grid line 56, providing a visual range and making it easy to quickly determine whether the oil level is within the normal range.

[0032] As a preferred embodiment, the outer wall of the connector 31 is provided with a limiting protrusion 35 and an annular groove 36 along the circumferential direction. The annular groove 36 is located below the limiting protrusion 35. The limiting protrusion 35 can abut against the upper surface of the transmission oil port to ensure that the installation depth of the connector 31 remains fixed and to improve the measurement accuracy of the dipstick. An O-ring 10 is installed in the annular groove 36 to ensure that the connector 31 is tightly connected to the transmission oil port and to ensure the sealing of the transmission.

[0033] In actual operation of this embodiment: Installation process: The dipstick guide assembly is fixedly connected to the transmission through the oil port connector 3. The connector 31 is securely installed at the transmission oil port. The limiting protrusion 35 abuts against the upper surface of the transmission oil port. The O-ring seal 10 is tightly fitted to the inner surface of the transmission oil port. The measuring guide tube 32 extends into the transmission. The extended dipstick 5 is inserted into the extended curved section 1 through the operating end 2 until the limiting plate 53 abuts against the second limiting platform 332. The dipstick plug 4 is pressed down to make the arc-shaped locking part 73 engage with the annular locking protrusion 8.

[0034] Usage: Park the vehicle on a level surface and let the engine idle for 1-2 minutes (preheat to 50-80℃ if the engine is cold). Press the opposing arm 74 to cause the buckle body 71 to deform the elastic buckle arm 72, thereby controlling the arc-shaped snap-fit ​​part 73 to separate from the annular snap-fit ​​protrusion 8. Pull the extended dipstick assembly out of the dipstick guide assembly. Wipe the surface of the extended dipstick 5 with a cleaning tool. Then reinstall the extended dipstick assembly into the dipstick guide assembly. After installation, pull out the extended dipstick 5 again and observe the position of the oil trace on the scale section 52. Add or remove some oil as needed to keep the oil level between the upper limit mark 54 and the lower limit mark 55.

Claims

1. An anti-drop extension dipstick assembly comprising a dipstick conduit assembly and an extension dipstick assembly, the extension dipstick assembly being inserted into the dipstick conduit assembly, characterized in that, The oil dipstick guide assembly includes an extended curved section (1), with an operating end (2) fixedly installed at the top of the extended curved section (1) and an oil port connector (3) fixedly installed at the bottom of the extended curved section (1). The extended oil dipstick assembly includes an oil dipstick plug (4) and an extended oil dipstick (5). The top of the extended oil dipstick (5) is fixedly installed at the bottom of the oil dipstick plug (4), and the bottom of the extended oil dipstick (5) extends through the extended curved section (1) to the outside of the oil port connector (3). The top of the dipstick plug (4) is integrally provided with an annular protrusion (6), and a pair of symmetrically arranged elastic buckles (7) are provided on the annular protrusion (6). The elastic buckle (7) includes an integrally arranged buckle body (71) and an elastic buckle arm (72). The buckle body (71) is arranged parallel to the axis of the dipstick plug (4). The top of the elastic buckle arm (72) is fixedly installed on the annular protrusion (6). The bottom of the elastic buckle arm (72) is connected to the bottom of the buckle body (71). The middle part of the elastic buckle arm (72) is provided with an arc-shaped snap-fit ​​part (73) protruding towards the axial side of the dipstick plug (4). The outer wall of the operating end (2) is provided with an annular snap-fit ​​protrusion (8). The arc-shaped snap-fit ​​part (73) snaps into the bottom of the annular snap-fit ​​protrusion (8).

2. The anti-drop extended oil level gauge assembly of claim 1, wherein, The oil port connector (3) includes a connector base (31) and a measuring guide tube (32) that are coaxially and integrally connected. The connector base (31) has a stepped limiting through hole (33) and a measuring guide through hole (34) that are connected and coaxially arranged along the axial direction. The measuring guide through hole (34) is coaxial with the measuring guide tube (32) and connected. The stepped limiting through hole (33) has a first limiting platform (331) and a second limiting platform (332) arranged from top to bottom. The bottom end of the extended curved section (1) is fixedly installed in the first limiting platform (331). The extended dipstick (5) includes an extended section (51) and a scale section (52) that are coaxially connected. A limit plate (53) is provided at the connection between the extended section (51) and the scale section (52). The limit plate (53) abuts against the second limit platform (332). The bottom end of the scale section (52) passes through the measuring guide hole (34) and the measuring guide tube (32) in sequence and extends out of the measuring guide tube (32).

3. The anti-drop extended oil level gauge assembly of claim 2, wherein, The diameter of the first limiting platform (331) is greater than the diameter of the second limiting platform (332), and the diameter of the limiting disk (53) is not greater than the diameter of the second limiting platform (332).

4. The anti-drop extended oil level gauge assembly of claim 3, wherein, The length of the extended section (51) is not less than the sum of the lengths of the extended curved section (1) and the stepped limiting through hole (33).

5. The anti-drop extended oil level gauge assembly of claim 1, wherein, The top of the buckle body (71) is provided with an inverted U-shaped pressing arm (74), and the bottom end of the pressing arm (74) is fixedly connected to the top of the buckle body (71).

6. The anti-drop extended oil level gauge assembly of claim 2, wherein, The bottom of the dipstick plug (4) is provided with an inverted triangular mounting base (9). The top of the mounting base (9) is fixedly installed on the bottom of the dipstick plug (4). A pair of clamping arms (91) are integrally provided at the bottom end of the mounting base (9). The top of the extension section (51) is fixedly installed between the pair of clamping arms (91).

7. The anti-drop extended oil level gauge assembly of claim 2, wherein, The scale segment (52) is provided with an upper limit mark (54) and a lower limit mark (55), and a grid line (56) is provided between the upper limit mark (54) and the lower limit mark (55).

8. The anti-drop extended oil level gauge assembly of claim 2, wherein, The outer wall of the plug-in base (31) is provided with a limiting protrusion (35) and an annular groove (36) along the circumferential direction. The annular groove (36) is located below the limiting protrusion (35), and an O-ring (10) is installed in the annular groove (36).

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