CN204253134U - A kind of oil filler cap assembly - Google Patents

Abstract

The utility model discloses an oil filler cap assembly, which comprises a fuel filler cap body, a connecting piece sleeved on the lower part of the oil filler cap body, and a base installed on the lower part of the connecting piece. Wherein, the central position of the oil filler cap body is provided with a downwardly extending cylindrical boss, the end of the cylindrical boss is provided with a first groove, and a paddle is fixed on the outer wall of the cylindrical boss. The connecting piece includes a ratchet cooperating with the paddle, and a threaded tube fixed on the outside of the ratchet. The base includes a base body, and a protrusion arranged at the center of the base body and extending upwards, the protrusion is installed in the first groove of the cylindrical boss. The utility model notifies the user that the tightening torque has reached the designed tightening torque through the sound generated between the plectrum and the ratchet, which can prevent the oil filler cap from being tightened in place or excessively tightened, and has a simple structure and convenient assembly.

Description

A fuel filler cap assembly

technical field

The utility model relates to the field of automobile manufacturing, in particular to an oil filler cap assembly.

Background technique

In the automotive engine industry, the oil filler cap on the engine is a seal that is frequently used and is not easy to ensure complete sealing. In the existing automobile engine, the oil filler cap of the engine is manually tightened, and the tightening force of different people is different. If the tightening torque of the user is too large, it is easy to damage the thread of the oil filler cap and the filler hole, and the It is not easy to unscrew once; if the tightening torque of the user is too small, it will easily lead to poor sealing and oil leakage, which will affect the life of the engine and cause unnecessary troubles to the user. Moreover, during the tightening process of the oil filler cap, there is no specific standard for judging whether the tightening torque has reached the design requirements, which can easily lead to a state where the fuel filler cap is not screwed in place or is over-tightened.

Utility model content

In view of this, the purpose of this utility model is to provide a new type of oil filler cap assembly, which solves the problem of insufficient or excessive tightening of the existing oil filler cap, and has good sealing performance at the same time.

In order to solve the above-mentioned technical problems, the technical scheme that the utility model takes is:

An oil filler cap assembly, comprising a fuel filler cap body, a connecting piece sleeved on the lower part of the oil filler cap body, and a base installed on the lower part of the connecting piece. Wherein, the central position of the oil filler cap body is provided with a downwardly extending cylindrical boss, the end of the cylindrical boss is provided with a first groove, and a paddle is fixed on the outer wall of the cylindrical boss. The connector includes a ratchet that cooperates with the paddle, and a threaded tube that is fixed on the outside of the ratchet. The base includes a base body, and a protrusion arranged at the center of the base body and extending upwards, and the protrusion is installed in the first groove of the cylindrical boss. By adopting the above-mentioned technical scheme, by selecting a suitable steel piece as the pick piece, the pick piece is an important component used to evaluate whether the tightening torque of the oil filler cap meets the design torque requirement. First, the pick is pre-embedded on the cylindrical boss of the plastic oil filler cap body, and the ratchet matching the pick is fixed on the inner side of the threaded pipe. The threaded pipe and the oil filler cap body are connected as a whole through the base. When initially tightening the filler cap body, the pick will turn with the ratchet. When it is tightened to the preset tightening torque, the paddle will be deformed, and at the same time, the end of the paddle will slide to the non-notch on the ratchet, and there will be relative sliding. At this time, the tightening torque will no longer increase. If at this time Continue to tighten the oil filler cap, the pick will fall to the notch of the ratchet, and the torque will not increase, and a sound will be produced when the pick falls to the notch of the ratchet, informing the user that the tightening torque requirement has been reached. Realize the function of preventing under-tightening and over-tightening.

In order to better connect the body of the oil filler cap, the connecting piece and the base into one body, the protruding end of the above base is hemispherical, and in order to facilitate the insertion of the protruding part, a chamfer is correspondingly provided at the mouth of the first groove .

In order to prevent oil and gas from leaking from the inside of the oil filler cap, a second groove is provided on the base body, and an O-ring is installed in the second groove. In order to prevent oil and gas from leaking from the outside of the oil filler cap, an annular sealing ring is also provided at the lower part of the oil filler cap body.

As a preferred embodiment of the present utility model, the pick is in the shape of an arc with a radius of 20 mm and an arc angle of 15°. The ratchet is tubular, with a height of 9mm, an outer diameter of 25mm, and an inner diameter of 21mm. There are 22 notches on the outer wall of the ratchet, the notches are 1.5mm long and 5mm wide. For the failure of the plectrum due to fatigue, a reinforcing rib is also arranged on the plectrum. Preferably, the plectrum is made of steel material with a thickness of 1 mm and a thickness of the ribs of 1 mm.

Beneficial effects of the utility model: the utility model notifies the user that the tightening torque has reached the designed tightening torque through the sound generated between the plectrum and the ratchet, which can prevent the occurrence of insufficient or excessive tightening of the fuel filler cap. Moreover, the structure is simple and the assembly is convenient. You only need to put the threaded pipe with the ratchet fixed on the body of the oil filler cap with the paddle, and then connect the two through the base to realize the assembly of the oil filler cap. assembly. In addition, the protruding end is hemispherical, and this structure cooperates with the first groove, which can effectively control the axial displacement of the oil filler cap body and the connecting piece, and ensure the reliability of the connection of each component.

The utility model will be described in detail below in conjunction with the accompanying drawings and embodiments.

Description of drawings

Fig. 1 is a sectional view of the utility model.

Fig. 2 is a sectional view of the main body of the oil filler cap in the utility model.

Fig. 3 is the front view of the oil cap body in the utility model.

Fig. 4 is a schematic diagram of the structure of the ratchet in the present invention.

Fig. 5 is a cross-sectional view of the threaded pipe in the utility model.

Fig. 6 is a structural schematic diagram of the base of the present invention.

Detailed ways

Examples, please refer to Figures 1 to 6,

An oil filler cap assembly includes a fuel filler cap body 1 , a connecting piece 2 sleeved on the lower part of the oil filler cap body 1 , and a base 3 installed on the lower part of the connecting piece 2 .

Wherein, the central position of the oil filler cap body 1 is provided with a downwardly extending cylindrical boss 10, the end of the cylindrical boss 10 is provided with a first groove 11, and a dial is fixed on the outer wall of the cylindrical boss 10. slice 12. Pick piece 12 is arc shape, and its radius is 20mm, and arc angle is 15 °. The plectrum 12 is also provided with a reinforcing rib 13 with a thickness of 1 mm. The plectrum 12 is made of steel material, and its thickness is 1mm.

The connecting piece 2 includes a ratchet 21 matched with the plectrum 12 , and a threaded tube 22 fixed on the outside of the ratchet 21 . In the matching part of the ratchet and the paddle, the distance of the ratchet is removed by 0.5mm inward, which can play a guiding role for the paddle. The ratchet 21 is tubular, with a height of 9 mm, an outer diameter of 25 mm, and an inner diameter of 21 mm. There are 22 notches on the peripheral wall of the ratchet 21, the notches are 1.5 mm long and 5 mm wide.

The base 3 includes a base body 31 , and a protrusion 32 disposed at the center of the base body 31 and extending upward. The protrusion 31 is installed in the first groove 11 of the cylindrical boss 10 . The end of the protrusion 32 is hemispherical, and the mouth of the first groove 11 is correspondingly chamfered. A second groove 33 is provided on the base body 31 , and an O-ring 34 for preventing oil and gas from leaking from the inside of the oil filler cap is installed in the second groove 33 . The lower part of the oil filler cap body 1 is provided with an annular sealing ring 4 for preventing oil and gas from leaking from the outside of the fuel filler cap.

When initially tightening the filler cap body, the pick will turn with the ratchet. When it is tightened to the preset tightening torque, the paddle will be deformed, and at the same time, the end of the paddle will slide to the non-notch on the ratchet, and there will be relative sliding. At this time, the tightening torque will no longer increase. If at this time Continue to tighten the oil filler cap, the pick will fall to the notch of the ratchet, and the torque will not increase, and a sound will be produced when the pick falls to the notch of the ratchet, informing the user that the tightening torque requirement has been reached, so as to realize Prevent under-tightening and over-tightening.

The above embodiments only set forth the basic principles of the utility model, and without departing from the spirit and scope of the utility model, the utility model also has various transformations to change the specific shape of the protruding end, and is not limited to hemispherical, etc. etc., these transformations should be considered as falling within the scope of the claimed utility model.

Claims (8)

1. an oil filler cap assembly, comprise and add machine oil lid body (1), it is characterized in that: also comprise the link (2) being socketed in and adding machine oil lid body (1) bottom, and be arranged on the base (3) of link (2) bottom; The described central position adding machine oil lid body (1) is provided with the cylindrical boss (10) to downward-extension, the end of this cylindrical boss (10) is provided with the first groove (11), the outer wall of cylindrical boss (10) is fixed with a plectrum (12); Described link (2) comprises the ratchet (21) coordinated with plectrum (12), and is fixed on the outside threaded pipe (22) of ratchet (21); Described base (3) comprises base body (31), and being arranged on the center of base body (31) and the projection (32) upwards extended, this projection (31) is arranged in first groove (11) of cylindrical boss (10).

2. oil filler cap assembly as claimed in claim 1, is characterized in that: described plectrum (12) is in circular arc, and its radius is 20mm, and arc round angle is 15 °.

3. oil filler cap assembly as claimed in claim 1, it is characterized in that: the end of described projection (32) is hemisphere, the oral area correspondence of the first groove (11) is provided with chamfering.

4. oil filler cap assembly as claimed in claim 1, it is characterized in that: described base body (31) is provided with the second groove (33), being equiped with in this second groove (33) for preventing oil gas from enclosing (34) from the O shape of cap internal leakage.

5. oil filler cap assembly as claimed in claim 1, is characterized in that: also comprise being arranged on and add machine oil lid body (1) bottom for preventing oil gas from the O-ring seal (4) of cap external leakage.

6. oil filler cap assembly as claimed in claim 1, is characterized in that: described ratchet (21) in a tubular form, high 9mm, external diameter is 25mm, and internal diameter is 21mm, the outer rim perisporium of ratchet (21) has 22 breach, the long 1.5mm of breach, wide 5mm.

7. the oil filler cap assembly as described in any one of claim 1 to 6, is characterized in that: described plectrum (12) is also provided with a stiffening rib (13).

8. oil filler cap assembly as claimed in claim 7, it is characterized in that: described plectrum (12) is made up of Steel material, its thickness is 1mm, and described stiffening rib (13) thickness is 1mm.