JPH04117127U - oil level gauge structure - Google Patents

Abstract

(57) [Summary] (with amendments) [Purpose] Accurately measure oil level and prevent oil from leaking into the atmosphere. [Structure] A hollow pipe-shaped gauge rod 1 having an air escape hole 12 communicating with the atmosphere side, a plug 2 slidably supported by the gauge rod, and an elastic member provided between the plug and the gauge rod. When the plug is inserted, the air escape hole communicates with the inside of the filler tube 4. [Effect] The oil level is accurately measured, there is no oil leakage to the atmosphere, and the device is compact.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention accurately measures the oil level in oil reservoirs such as the engine oil pan. The present invention relates to a compact oil level gauge structure capable of measuring oil level.

0002

[Conventional technology]

FIG. 7 shows the structure of an oil level gauge that has been commonly used in the past. Firachu The tube 26 is erected with one end thereof submerged in the oil reservoir 5. filler tube A gauge rod 28 and a cap are attached to the plug 27 which is removably inserted into the opening of 26. 29 is fixed. As shown in Figure 8, when measuring oil level, Grasp the handle of the rod 28, insert the plug 27 into the filler tube 26, and remove the filler tube 26. The cap 29 is brought into contact with the opening edge of the la tube 26, and the cap 29 is attached to the gauge rod 28. This is done by comparing the oil with the oil level indicator mark 30. Also, At normal times, the plug 27 is inserted and held in the filler tube 26 as shown in FIG. , to prevent oil leakage to the atmosphere.

0003 As shown in FIG. 7, when the plug 27 is inserted into the opening of the filler tube 26, Air is trapped between the oil level 31 in the filler tube 26 and the lower surface of the plug 27 . Furthermore, when the plug 27 is inserted, the trapped air is compressed and the air pressure increases. do. Therefore, as shown in FIG. 8, the oil level 31 inside the filler tube 26 is pressed. As a result, a difference occurs between the oil level 32 of the oil reservoir 5 and the oil level 32 of the oil reservoir 5. Gauge rod 28 is filler tube 2 In order to measure the oil level by submerging it in the oil in the oil storage part 5, 32 different inaccurate oil level measurements are taken.

0004 As an example of a known technique that solves the above problems, Japanese Utility Model Application Publication No. 59-110315 Techniques for disclosing information will be raised. The bulletin states that the gauge guide tube (the filler tube) It is removably fitted into the upper end opening of the gauge body (the gauge body). A valve device that is manually operated is installed on the cap that firmly holds the It is something that The valve device is normally biased by an elastic body when oil level is not measured. Although the valve is closed by force, when inserting the cap, the valve device must be opened manually to open the gate. The air in the gauge guide tube is released to the atmosphere, and the oil level in the gauge guide tube sinks. It is designed to prevent oil leaks and accurately measure oil levels.

[0005] In addition, Utility Model Application No. 52-121539 is known as a known technology regarding oil level gauges. The technology of the publication is raised. The technology is based on gauge rods (equivalent to the gauge rods mentioned above). ) is formed with a pipe, and a pipe is used to remove air from the case where the gauge rod is inserted. A hole for air release is provided in the gauge rod, and air is removed from the pipe-shaped gauge rod. It also functions as an air breather.

[0006]

[Problem that the idea aims to solve]

What is shown in Utility Model Application Publication No. 59-110315 is a valve device installed in a cap. The valve stem of the valve is manually operated to bleed air from the atmosphere communication hole. This tends to cause the problem that the venting operation becomes uncertain. In addition, a valve is installed inside the atmosphere communication hole. Because the gauge guide tube has a penetrating structure, the air inside the gauge guide tube can be released quickly and sufficiently. There is a problem that it is not released. Furthermore, the structure of the valve device is somewhat complex and has many parts. There is a problem with this. In addition, the oil tank has a structure in which the plug is fixed to the cap. It is difficult to apply to bell gauge structures and is not universally applicable. On the other hand, the fruit The oil level gauge shown in Japanese Patent Application No. 52-121539 has a relatively large volume. A gauge rod is inserted into the case to measure the oil level, and the oil level is relatively small. It is not intended for filler tubes. Moreover, above the air pressure inside the case, The rise is due to thermal expansion of the air inside the case, and as in the present invention, the filler tube Air pressure is not increased by inserting a plug inside. Therefore, game The air venting structure through the cage rod is different from the present invention. Also, gauge rod Since the gauge rod doubles as an air breather, oil is released from the gauge rod into the atmosphere and There are problems with dirt and wasted oil.

[0007] This invention solves the above problems and aims to reduce the oil level when inserting the plug. The oil level can be measured accurately without oil sinking, and the oil level can be measured accurately. There is no leakage, and there is no need to change the shape of the filler tube. The purpose is to provide an oil level gauge structure that can be assembled into a pact.

[0008]

[Means to solve the problem]

In order to achieve the above-mentioned objectives, the present invention has been developed by forming at least the upper side with a hollow pipe. An oil level display mark is provided on the lower side of the pipe, and a fixed mark is provided on the outer periphery of the hollow pipe. An air escape hole that communicates with the hollow pipe is formed above the installed seat plate. and a gauge rod which is removably inserted into the filler tube and which is attached to the upper side of the seat plate. A plug slidably supported by a gauge rod, and between the gauge rod and the plug side. and an elastic body that urges the plug to press the plug toward the seat plate. This constitutes the oil level gauge structure.

[0009]

[Effect]

If the plug is not inserted into the filler tube, the pressure of the elastic body will cause the gate to close. The seat plate of the rod comes into contact with the plug. Therefore, the air vent provided above the seat plate The hole is closed by the inner periphery of the plug. Inserting the plug into the filler tube This is done by pressing the gauge rod in the insertion direction and compressing the elastic body. Due to compression of elastic body A relative misalignment occurs between the gauge rod and the plug, and the seat plate separates from the plug, causing air to escape. A hole is exposed and communicates within the filler tube. Therefore, the air inside the filler tube passes through the gauge rod and is released into the atmosphere. Thereby the air pressure inside the filler tube does not rise and the oil level does not sink. After fully inserting the plug, remove it from the gauge rod. When you release your hand, the elastic body acts to move the gauge rod to its original position, and the air The relief hole is closed by a plug. This causes oil to leak to the atmosphere. do not have.

0010

【Example】

Hereinafter, one embodiment of the present invention will be described based on the drawings. As shown in Fig. 1, the oil level gauge structure of this embodiment has a hollow pipe. A gauge rod 1 formed of a rubber rod, a plug 2 slidably supported by the gauge rod 1, and a plug 2 formed of an elastic body. It consists of a certain spring 3 etc. Insert plug 2 into filler tube 4 As a result, the oil level is measured and the opening of the filler tube 4 is closed. Note that the filler tube 4 is erected with its lower surface submerged in the oil reservoir 5.

[0011] As shown in FIG. 1, in this embodiment, the gauge rod 1 includes an upper hollow pipe portion 6 and It is formed from a flat level measuring section 7 connected to a flat level measuring section 7. Upper end of hollow pipe section 6 A handle part 8 is formed on the side and is rounded into an arc shape, and the handle part 8 is connected to the level measuring part 7. The lower end side is closed to form a closing part 14. The opening 20 at the end of the handle 8 is large. It is opened to the air side. As described above, the hollow pipe portion 6 has an air passage 9 communicating with the atmosphere side. is formed. In addition, the oil level is displayed on the oil storage section 5 side of the level measurement section 7. A mark 10 is formed. On the other hand, as shown in the enlarged view in Figure 2, the hollow of gauge rod 1 A seat plate 11 is fixed to the outer periphery of the pipe portion 6. There is a hollow pipe section directly above the seat plate 11. An air escape hole 12 communicating with the air passage 9 of No. 6 is formed therethrough. Also, in Figure 1 As shown, a spring support plate 13 is fixed to the hollow pipe portion 6.

0012 The plug 2 includes a small diameter portion 15 inserted into the filler tube 4 and a filler tube. 4, and a large diameter portion 16 that abuts and encloses the abutment surface 19 on the opening edge 17 of 4. . Note that the plug 2 is arranged on the seat plate 11 of the gauge rod 1.

[0013] The spring support plate 13 fixed to the hollow pipe part 6 of the gauge rod 1 and the plug 2 A spring 3, which is one of the elastic bodies, is interposed between the large diameter portion 16 and the upper end surface. vinegar With no external force acting on the pull 3, the spring 3 pulls the plug 2 into its small diameter portion 1. Press with appropriate force so that the lower end surface 18 of 5 comes into contact with the seat plate 11. In addition, the spring Contact surface 19 of large diameter portion 16 of plug 2 and oil level when ring 3 is fully compressed The interval with the display mark 10 is set to the regular oil level display position.

[0014] Next, the operation of this embodiment will be explained. In FIG. 3, grip the handle 8 of the gauge rod 1 and insert the gauge rod 1 into the filler tube 4. When inserted, the lower end surface 18 of the small diameter portion 15 of the plug 2 is connected to the opening edge 17 of the filler tube 4. Indicates the state reached. Insert the small diameter part 15 of the plug 2 into the filler tube 4 Therefore, a certain amount of insertion force is required. Due to this insertion force, only the gauge rod 1 will be lowered first. move towards As a result, the spring 3 is pressed with a force corresponding to the insertion force. , plug 2 begins insertion. As described above, the seat plate 11 of the gauge rod 1 has a small diameter portion 15. An air escape hole 12 formed directly above the seat plate 11 and away from the lower end surface 18 is a filler. exposed inside the la tube 4. Figure 4 shows that the plug 2 is further inserted into the filler tube from the state shown in Figure 3. The filler tube 4 is inserted into the filler tube 4, and the abutting surface 19 of the large diameter portion 16 The fully inserted position of the plug 2 is shown in contact with the plug 7. Until this state is reached, gauge rod 1 is pressed, so the air escape hole 12 remains exposed inside the filler tube 4. maintained in the state. Therefore, the air escape hole 12 changes from the state shown in FIG. 3 to the state shown in FIG. The air in the filler tube 4 continues to open until the air reaches the hollow pipe through the air escape hole 12. It passes through the air passage 9 of the pipe portion 6 and is discharged from the opening 20 of the handle portion 8 to the atmosphere. figure 5 shows a state in which the manual pressure of the gauge rod 1 is released from the state shown in FIG. spuri Due to the reaction force of the ring 3, the gauge rod 1 returns to its original state via the spring support plate 13. Then, the seat plate 11 comes into contact with the lower end surface 18 of the small diameter portion 15 of the plug 2. Thereby, the sky The air escape hole 12 enters the plug 2 and is closed. As a result of the above, the filler tube 4 The communication between the inside and the air passage 9 of the hollow pipe section 6 is cut off, and there is no communication with the atmosphere side. . Note that the tip of the gauge rod 1 is temporarily inserted into the oil reservoir 5 due to the compression of the spring 3. However, as mentioned above, the large diameter of the plug 2 when the spring 3 is fully compressed The distance between the contact surface 19 of the part 16 and the oil level display mark 10 is the normal oil level. Since this corresponds to the oil level display position, it is attached to the oil level display mark 10 of the level measuring section 7. Accurate oil position can be determined by comparing the oil position with the oil level display mark 10. It is possible to measure the oil level. Also, the air pressure inside the filler tube 4 increases. Therefore, there is no oil level sinking, and the oil level 21 and oil accumulation are directly below the filler tube 4. The oil level 22 of the portion 5 coincides with the oil level 22 of the portion 5, and the oil level can be measured accurately.

[0015] FIG. 6 is a partially axial sectional view showing another embodiment of the present invention. In this example, elastic The shape of the body is different from the above. The plug 23 is placed on the seat plate 11 of the gauge rod 1. It is slidably supported by the gauge rod 1. The upper end of the plug 23 can be elastically deformed. A flexible portion 24 is integrally formed. On the other hand, a flexible portion 24 is provided on the outer periphery of the gauge rod 1. A cap-shaped holding member 25 that abuts and engages and covers the outer periphery of the plug 23 is fixed. It will be worn. Since the flexible portion 24 performs the same function as the spring 3 of the previous embodiment, Therefore, it is possible to achieve the same effects as in the above embodiment.

[0016] In the above embodiment, a simple coil-shaped spring 3 and a flexible part are used as elastic bodies. 24 was adopted, but of course it is not limited to this. In addition, the air release hole 12 The number, shape, size, etc. of the filler tube 4 are taken into account, such as the volume of the filler tube 4 and the insertion speed of the plug 2. and set accordingly. Further, the entire gauge rod 1 may be formed of a hollow pipe.

[0017]

[Effect of the idea]

According to the present invention, the following remarkable effects are achieved. (1) The air release hole formed in the gauge rod and the air passage communicating with it The air inside the filler tube when the lug is inserted is released to the atmosphere. Therefore, There is no increase in air pressure inside the filler tube, and no sinking phenomenon of oil level occurs. This allows accurate oil level measurements. (2) The air release hole is only available in the filler tube when inserting the gauge rod or plug. It opens inward, and is normally shielded by a plug, so there is no possibility of oil accumulation. Oil will not be released into the atmosphere through the air vent, preventing dirt from surrounding areas and No problems such as oil wastage. (3) The filler tube can be the same as the existing one, just change the gauge rod side. It can be easily applied to existing ones. (4) The gauge rod is made of a hollow pipe, and the gauge rod is slidably supported by the hollow pipe. Since the plug is inserted while pressing the lug with an elastic body, the overall structure is The structure can be summarized compactly. (5) Compared to the conventional technology, the number of parts is small and it can be implemented at low cost. (6) Air is removed by simply inserting the gauge rod and plug into the filler tube. It is possible to prevent oil leakage, and the oil level can be measured in that state, making it an ideal choice for operation. It is possible to measure the oil level easily and quickly.

[Brief explanation of drawings]

FIG. 1 is an axial sectional view showing the overall structure of an embodiment of the present invention.

FIG. 2 is an enlarged partial axial sectional view showing the seat plate and air escape hole of FIG. 1 in an enlarged manner.

FIG. 3 is a partial axial sectional view for explaining the operation of the embodiment, showing a state in which the plug starts to be inserted.

4 is a partial axial cross-sectional view showing the plug of FIG. 3 fully inserted and the spring fully compressed; FIG.

5 is a partial axial sectional view showing a state in which the spring is released from compression from the state shown in FIG. 4; FIG.

FIG. 6 is a partial axial cross-sectional view of another embodiment of the present invention.

FIG. 7 is an axial sectional view showing an outline of a conventional oil level gauge structure.

8 is an axial cross-sectional view showing the plug of FIG. 7 in a fully inserted state; FIG.

[Explanation of symbols]

1 Gauge rod 2 plug 3 Spring 4 Filler tube 5 Oil reservoir 6 Hollow pipe section 7 Level measurement section 8 Handle part 9 Air passage 10 Oil level display mark 11 Seat board 12 Air relief hole 13 Spring support plate 14 Closing part 15 Small diameter section 16 Large diameter part 17 Opening edge 18 Lower end surface 19 Contact surface 20 Opening 21, 22 Oil level 23 Plug 24 Flexible part 25 Holding member

Claims (1)

[Scope of utility model registration request] 1. At least the upper side is formed of a hollow pipe, an oil level display mark is provided on the lower side, and an air relief hole communicating with the inside of the hollow pipe is located above a seat plate fixed to the outer periphery of the hollow pipe. a gauge rod formed through the filler tube, a plug detachably inserted into the filler tube and slidably supported by the gauge rod above the seat plate, and a plug provided between the gauge rod and the plug side. An oil level gauge structure comprising: an elastic body for biasing the plug to press the plug toward the seat plate.