Six-sound rebound type oil filler cap

Abstract

The utility model provides a six-sound springback type oil filler cap which comprises a valve body and a handle cap connected to the valve body in a buckled mode, a torsion spring, a fixing base and a ratchet wheel are arranged in the valve body and the handle cap, the handle cap is in transmission connection with the valve body through the ratchet wheel to achieve torsion transmission, and the fixing base is used for supporting the torsion spring to achieve springback. According to the oil filler cap, an operator can be accurately prompted through six sounds, rebounding is achieved through the torsional spring, the tightening state is locked, and loosening is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil filler cap technical field, in particular to a six response rebound type oil filler cap. BACKGROUND

[0002] Traditional fuel vehicles and hybrid vehicles that need to be refueled, the fuel filling port needs to be sealed by an oil filler cap. When the oil filler cap is tightened, a "click" sound is needed as a feedback signal when the torque reaches the design value, indicating that the oil filler cap has been tightened. The existing oil filler cap, such as the single-response oil filler cap disclosed in the utility model patent with authorization announcement CN110154740B, can only emit a "click" sound when tightened, and the sound is the only basis for determining whether it is tightened. In a noisy environment, users often do not get good sound feedback. In addition, in this structure, after the tightening force disappears, the positioning and limiting of the elastic arm are achieved by the inclined surfaces with different inclinations, thereby ensuring the fixation of the tightening angle. During long-time driving of the vehicle or driving on poor road surfaces, loosening is likely to occur, thereby causing the risk of internal oil leakage or external contamination. SUMMARY

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies in the prior art. The utility model provides a six-response rebound type oil filler cap.

[0004] The technical solution adopted by the utility model to solve its technical problem is as follows: a six-response rebound type oil filler cap, comprising a valve body connected to an oil pipe head, a handle cover buckled to the valve body, a torsional spring, a fixed seat and a ratchet wheel arranged inside the valve body and the handle cover, wherein the valve body comprises a connecting part and a flange part, the fixed seat is fixedly connected in the inner cavity of the connecting part, the inner side edge of the flange part is provided with an annular guide rail, the ratchet wheel is arranged on the guide rail and is in sliding connection with the guide rail, two first pawls are arranged on the inner ring of the ratchet wheel, a ring of first ratchet teeth meshing with the first pawls is arranged on the inner wall of the handle cover, and the first ratchet teeth and the first pawls realize the transmission of the torsional force from the handle cover to the ratchet wheel; six second pawls are uniformly distributed on the flange part outside the guide rail in the circumferential direction, a ring of second ratchet teeth meshing with the second pawls is arranged on the outer ring of the ratchet wheel, and the second ratchet teeth and the second pawls realize the transmission of the torsional force from the ratchet wheel to the valve body; two limiting grooves are arranged on the outer edge of the first pawls, two limiting blocks are arranged on the inner wall of the handle cover, during assembly, the limiting blocks are arranged in the limiting grooves and can move in the circumferential direction in the limiting grooves, and the rotation angle of the handle cover relative to the valve body is limited; the torsional spring is arranged between the handle cover and the fixed seat, the upper end of the torsional spring is fixedly connected with the handle cover, and the lower end of the torsional spring is fixedly connected with the fixed seat.

[0005] Further, in order to facilitate the installation of the torsion spring, the fixing seat is provided with a downward recessed groove, the middle part of the groove is provided with a second sleeve, the side wall of the second sleeve is provided with a second clamping groove, the inside of the second sleeve is provided with a guide column, the inner wall of the handle cover directly above the second sleeve is provided with a downward extending first sleeve, the side wall of the first sleeve is provided with a first clamping groove, the upper end of the torsion spring is inserted into the first sleeve, and the end part is clamped in the first clamping groove, the lower end of the torsion spring is inserted into the second sleeve, and the guide column is inserted into the center hole of the lower end of the torsion spring, and the end part of the lower end of the torsion spring is clamped in the second clamping groove. The first sleeve, the second sleeve and the guide column jointly form a positioning and guiding structure of the torsion spring, which can fix and guide the torsion spring.

[0006] Further, the bottom surface of the groove around the second sleeve is provided with a plurality of through holes. The main function of the through hole is to reduce weight and reduce the overall weight.

[0007] Further, the edge of the bottom surface of the fixing seat is provided with at least one lower lug, the lower lug is provided with a third clamping groove opening downward, and the side wall of the inner cavity of the valve seat is provided with a plug plate corresponding to the third clamping groove. When assembled, the plug plate is inserted into the third clamping groove one by one to realize the fixed connection between the fixing seat and the valve seat. In the embodiment, the lower lug and the plug plate are both two, which are arranged symmetrically along the radial direction to limit the rotation between the fixing seat and the valve seat.

[0008] As preferred, the limiting groove is arc-shaped, and the corresponding circumferential angle is 90°.

[0009] Further, the limiting block is provided with a plurality of notches to reduce the contact area and reduce the friction resistance.

[0010] Further, the two ends of the limiting block are provided with first sharp corners, the side surface of the first sharp corner forms an inner first guide surface, the two ends of the limiting groove are provided with second sharp corners, and the side surface of the second sharp corner forms an inner second guide surface. When the limiting block slides to the end of the limiting groove, the first sharp corner is embedded in the inner side of the second sharp corner, so that the first guide surface is attached to the second guide surface. The structure of the sharp corner and the guide surface simultaneously realizes rapid guidance, facilitates insertion, and the sharp corners are clamped to each other to make the position relatively stable.

[0011] Further, the first pawl includes a tooth part and a spring arm integrally connected, one end of the spring arm is integrally connected to the inner ring of the wheel disc through a connecting part, the spring arm is arc-shaped, the tooth part is arranged on the end of the spring arm away from the connecting part, and the spring arm is higher than the connecting part in the axial direction, so that the spring arm and the wheel disc form an annular insertion slot, and the end of the first pawl is inserted into the annular insertion slot.

[0012] Further, in order to ensure the sealing performance during tightening, the lower end of the valve body is provided with a threaded part for threaded connection with the oil pipe head, the valve body above the threaded part is provided with a ring groove, and the ring groove is provided with a sealing ring.

[0013] Further, in order to avoid the oil filler cap missing after being removed, the connecting member is further included, the connecting member includes a connecting ring, a connecting rope and a connecting seat, the connecting rope is connected with the connecting ring and the connecting seat respectively, the connecting ring is sleeved on the handle cover and embedded in the first ring groove of the handle cover, and the connecting seat is connected on the vehicle body.

[0014] The six-sound rebound type oil filler cap has the advantages that when the oil filler cap is tightened, six "click" sounds are heard, even if the environment is noisy and the sound cannot be heard, the tightening feedback can be obtained through the feel of the oil filler cap being limited to rotate and not moving, and the end cover rebounds at this time, the handle direction is consistent after being locked, reliable tightening and sealing are ensured, the operation is simple and fast, and the six-sound rebound type oil filler cap is convenient and practical. BRIEF DESCRIPTION OF DRAWINGS

[0015] The utility model makes further explanation in connection with the drawings and examples.

[0016] Figure 1 It is a structure schematic view of the six-sound rebound type oil filler cap.

[0017] Figure 2 It is a top view structure schematic view of the six-sound rebound type oil filler cap.

[0018] Figure 3 It is a sectional structure schematic view of A-A. Figure 2

[0019] Figure 4 It is a side structure schematic view of the six-sound rebound type oil filler cap.

[0020] Figure 5 It is a sectional structure schematic view of B-B. Figure 4

[0021] Figure 6 It is a structure schematic view of the handle cover.

[0022] Figure 7 It is a three-dimensional structure schematic view of the ratchet wheel.

[0023] Figure 8 It is a top view structure schematic view of the ratchet wheel.

[0024] Figure 9 It is a structure schematic view of the fixing seat.

[0025] Figure 10 It is a structure schematic view of the fixing seat.

[0026] Figure 11 It is a structure schematic view of the valve body.

[0027] Figure 12 ​​is the cross-sectional structure diagram of the valve body.

[0028] Figure 13 is the working state diagram.

[0029] In the figure: 1, handle cover, 11, handle, 12, first sleeve, 13, first clamping groove, 14, first ratchet, 15, limiting block, 16, first guide surface, 17, notch, 18, protrusion, 19, first ring groove, 2, ratchet wheel, 21, second ratchet, 22, first pawl, 221, tooth part, 222, elastic arm, 23, wheel disc, 24, connecting part, 25, annular insertion slot, 3, torsional spring, 4, fixed seat, 41, second sleeve, 42, second clamping groove, 43, guide column, 44, lower hanging lug, 45, third clamping groove, 46, through hole, 5, valve body, 51, connecting part, 52, flange part, 53, inner cavity, 54, insertion plate, 55, guide rail, 56, second pawl, 57, limiting groove, 58, second guide surface, 59, second ring groove, 6, connecting piece, 61, connecting ring, 62, connecting rope, 63, connecting seat, 7, sealing ring. DETAILED DESCRIPTION

[0030] The utility model will be explained further in detail now in combination with the drawings. These drawings are all simplified schematic diagrams, and only schematically illustrate the basic structure of the utility model, therefore, it only shows the structure related to the utility model, and the direction and reference (such as up, down, left, right and the like) can be only used to help the description of the features in the drawings. Therefore, the following specific embodiments are not in the restrictive sense, and the range of the claimed subject matter is only limited by the appended claims and their equivalents.

[0031] As Figures 1-5 shown, the utility model discloses a six response rebound type oil filler cap, including the valve body 5 connected with the oil pipe head, the handle cover 1 buckled on the valve body 5, the valve body 5 and handle cover 1 inside are equipped with torsional spring 3, fixed seat 4 and ratchet wheel 2, handle cover 1's upper still is equipped with connecting piece 6, and the connecting piece 6 is flexibly connected in the oil filler cap on the vehicle body, as Figure 1 and Figure 2 shown, the connecting piece 6 includes connecting ring 61, connecting rope 62 and connecting seat 63, and the two ends of the connecting rope 62 are connected with the connecting ring 61 and the connecting seat 63 respectively, the connecting rope 62 is flexible and can be bent at will, the connecting ring 61 is sleeved on the handle cover 1 and is embedded in the first ring groove 19 of the handle cover 1, and the connecting seat 63 is connected on the vehicle body, when the oil filler cap is unscrewed from the oil tank, it can be hung on the vehicle body through the connecting piece 6, avoiding the loss of the oil filler cap.

[0032] As Figure 6As shown, the upper end of the handle cover 1 is provided with a handle 11 for holding, facilitating the operator to twist, the handle cover 1 is a hollow structure, the inside is provided with a coaxial first sleeve 12 and a first ratchet 14, the first sleeve 12 is located inside the first ratchet 14, and the side wall is connected by a reinforcing rib. The inner wall of the handle cover 1 is provided with two limiting blocks 15, and the limiting blocks 15 are provided with a plurality of notches 17 to reduce the contact area and frictional resistance.

[0033] As shown in Figure 7 and Figure 8 The ratchet 2 includes a disc 23, the inner circle of the disc 23 is provided with two first pawls 22, and the outer circle of the disc 23 is provided with a ring of second ratchets 21. The first pawl 22 includes a tooth portion 221 and a spring arm 222 connected integrally, one end of the spring arm 222 is integrally connected to the inner circle of the disc 23 through a connecting portion 24, the spring arm 222 is arc-shaped, the tooth portion 221 is arranged on the end of the spring arm 222 away from the connecting portion 24, and the spring arm 222 is higher than the connecting portion 24 in the axial direction, so that an annular slot 25 is formed between the spring arm 222 and the disc 23, and the end of the first ratchet 14 is inserted into the annular slot 25.

[0034] As shown in Figure 9 and Figure 10 The fixed seat 4 is provided with a downwardly recessed groove, the middle part of the groove is provided with a second sleeve 41, the side wall of the second sleeve 41 is provided with a second clamping groove 42, the inside of the second sleeve 41 is provided with two oppositely arranged guide columns 43, and the groove bottom surface of the second sleeve 41 is provided with a plurality of through holes 46 for weight reduction. The edge of the bottom surface of the fixed seat 4 is provided with at least one lower lug 44, the lower lug 44 is provided with a third clamping groove 45 opening downward, and in the embodiment, the lower lug 44 and the plug plate 54 are both two and are arranged radially symmetrically.

[0035] As shown in Figure 11 and Figure 12 The valve body 5 includes a connecting portion 51 and a flange portion 52, the inside of the connecting portion 51 is provided with a hollow inner cavity 53, the side wall of the inner cavity 53 is provided with a plug plate 54 corresponding to the third clamping groove 45, the fixed seat 4 is arranged in the inner cavity 53 of the valve body 5, when assembled, the plug plate 54 on the valve body 5 is inserted into the third clamping groove 45 of the fixed seat 4 one by one, so that the fixed seat 4 and the valve seat are fixedly connected, and the rotation of the fixed seat 4 and the valve seat around the shaft is limited. The inner side edge of the flange portion 52 is provided with an annular guide rail 55, the disc 23 of the ratchet 2 is arranged on the guide rail 55 and is in sliding connection with the guide rail 55, six second pawls 56 are uniformly distributed on the flange portion 52 outside the guide rail 55, the outer edge of the first pawl 22 is provided with two limiting grooves 57, the limiting grooves 57 are arc-shaped, and the corresponding circumferential angle is 90°.

[0036] As shown in Figure 3 andFigure 12 As shown, in order to ensure the sealing when being screwed, the lower end of the valve body 5 is provided with a connecting part 51 for connecting with the tubing head, and a second ring groove 59 is arranged above the connecting part 51, and a sealing ring 7 is arranged in the second ring groove 59.

[0037] As shown, Figure 3 The first sleeve 12 is arranged above the second sleeve 41, and the two sleeves extend oppositely, the upper end of the torsion spring 3 is inserted into the first sleeve 12, and the end is clamped in the first clamping groove 13, the lower end of the torsion spring 3 is inserted into the second sleeve 41, and the guide column 43 is inserted into the center hole of the lower end of the torsion spring 3, and the end of the lower end of the torsion spring 3 is clamped in the second clamping groove 42. The first sleeve 12, the second sleeve 41 and the guide column 43 jointly form a positioning and guiding structure of the torsion spring 3, and can fix and guide the torsion spring 3. The torsion spring 3 is arranged between the handle cover 1 and the fixed seat 4, and the upper end of the torsion spring 3 is fixedly connected with the handle cover 1, and the lower end is fixedly connected with the fixed seat 4.

[0038] As shown, Figure 5 The first pawl 22 on the inner ring of the ratchet wheel 2 is engaged with the first ratchet tooth 14 on the inner wall of the handle cover 1, and the first ratchet tooth 14 and the first pawl 22 realize the transmission of the torsion force from the handle cover 1 to the ratchet wheel 2; the second ratchet tooth 21 on the outer ring of the ratchet wheel 2 is engaged with the second pawl 56 on the valve body 5, and the second ratchet tooth 21 and the second pawl 56 realize the transmission of the torsion force from the ratchet wheel 2 to the valve body 5; during assembly, the limiting block 15 is arranged in the limiting groove 57 and can move circumferentially in the limiting groove 57, and the rotating angle of the handle cover 1 relative to the valve body 5 is limited. The two ends of the limiting block 15 are provided with first sharp corners, and the side surface of the first sharp corner forms an inner-enclosed first guide surface 16, and the two ends of the limiting groove 57 are provided with second sharp corners, and the side surface of the second sharp corner forms an inner-enclosed second guide surface 58. When the limiting block 15 slides to the end of the limiting groove 57, the first sharp corner is embedded in the inner side of the second sharp corner, so that the first guide surface 16 is in close contact with the second guide surface 58. The structure of the sharp corner and the guide surface realizes quick guiding at the same time, is convenient to insert, and the relative position is relatively stable because the sharp corners are clamped with each other.

[0039] Working principle:

[0040] The lower end of the handle cover 1 and the upper end of the valve body 5 are clamped on the edge of the flange part 52 through the protrusion 18, and the handle cover 1 and the valve body 5 are movably connected, and can realize relative rotation. The valve body 5 has six second pawls 56, and the second pawls 56 are higher than the end surface of the flange part 52. When the limiting block 15 on the inner ring of the handle cover 1 rotates clockwise in the limiting groove 57 on the upper end of the valve body 5 by a certain angle, the corner outside the second pawl 56 will be contacted, that is, the first guide surface 16 and the second guide surface 58 are in close contact with each other, at this time, the movement is limited, and the movement stroke can be called the movable stroke of the handle cover 1.

[0041] As shown, Figure 13As shown by the middle red line, the first ratchet 14 includes a force receiving surface 14a and an inclined surface 14b, the tooth portion 221 of the first pawl 22 includes force receiving surfaces 221a and 221b, the second ratchet 21 includes a force receiving surface 21a and an inclined surface 21b, and the tooth portion of the second pawl 56 includes a force receiving surface 56a and an inclined surface 56b. The force receiving surface 21a and the force receiving surface 56a are both right-angled surfaces. The radius of rotation of the second ratchet 21 is greater than the radius of the circle on which the tooth portion of the second pawl 56 is located, so that when the second pawl 56 and the second ratchet 21 rotate relative to each other, the second pawl 56 can generate resistance to the second ratchet 21, thereby limiting the rotation of the second ratchet 21.

[0042] When the oil filler cap is tightened, the handle cover 1 is first rotated clockwise, and the rotation of the handle cover 1 drives the first ratchet 14 to rotate, so that the force receiving surface 221a is abutted against the force receiving surface 14a. The first ratchet 14 transmits the torque to the first pawl 22 of the ratchet wheel 2, so that the ratchet wheel 2 is driven to rotate, the second ratchet 21 of the outer ring is rotated clockwise, the friction between the inclined surface 21b and the inclined surface 56b is generated, the valve body 5 is driven to rotate by the second pawl 56, and the oil filler cap is tightened.

[0043] When the valve body 5 is rotated and tightened to the position, the force applied to the handle cover 1 is greater than the force with which the oil filler cap is just tightened on the oil filler port. At this time, since the valve body 5 has reached the position, the valve body 5 cannot rotate with the handle cover 1. Since the valve body 5 is connected to the oil pipe head and cannot rotate, the tightening force needs to be increased. When the tightening force exceeds the friction between the inclined surface 21b and the inclined surface 56b, the inclined surface 21b and the inclined surface 56b move relative to each other, the second ratchet pushes the second pawl 56 outward, and the elastic arm 222 is elastically opened outward under the action of the second ratchet, so that the six second ratchets 21 of the outer ring of the ratchet wheel 2 jump over the tooth portions inside the six second pawls 56, and at the same time, six “pops” are produced. At the same time, the limiting block 15 on the handle cover 1 moves to the end of the limiting groove 57 and is limited from moving forward, so that the second tooth jumping cannot be produced, that is, the second sound cannot be produced, and the operator has a strong feeling of tightening to the bottom.

[0044] After the valve body 5 reaches the position, since the fixed seat 4 is fixed with the valve body 5, the fixed seat 4 also reaches the position synchronously and cannot move any more. When the handle cover 1 is continuously rotated, the handle cover 1 cannot be tightened until the tooth jumping occurs. In this process, the torsional spring 3 is deformed and generates a certain torsional force. When the operator releases the hand, the handle cover 1 will rebound under the action of the torsional force of the torsional spring 3. Even in a noisy environment, the handle cover 1 cannot be tightened, and the operator can determine that the oil filler cap has been tightened.

[0045] Since the position of the valve body 5 is consistent when it is screwed into place, the same handle cover 1 produces a consistent active stroke, the torsional force of the torsional spring 3 is also the same, and thus the rebound stroke of the handle cover 1 is also the same, thereby ensuring that the handle cover 1 is in the same direction after the oil filler cap is locked.

[0046] The above is the ideal embodiment of the present application, and the above description can be varied and modified without departing from the scope of the present application. The technical scope of the present application is not limited to the content of the specification, and must be determined by the scope of the claims.

Claims

1. A six-click rebound filler cap characterized in that: The utility model provides a valve body connected with tubing head, handle cover buckled on valve body, torsional spring, fixed seat and ratchet wheel are equipped in valve body and handle cover, wherein, the valve body includes connecting part and flange part, the fixed seat is fixedly connected in the inner cavity of connecting part, the inner side edge of flange part is equipped with annular guide rail, the ratchet wheel is placed on the guide rail and is slidably connected with the guide rail, two first pawls are equipped on the inner ring of ratchet wheel, a circle of first ratchet teeth that is engaged with first pawl is equipped on the inner wall of handle cover, and first ratchet teeth and first pawl realize the torque transmission of handle cover to ratchet wheel, six second pawls are evenly distributed on the flange part of the outer side of guide rail, a circle of second ratchet teeth that is engaged with second pawl is equipped on the outer ring of ratchet wheel, and second ratchet teeth and second pawl realize the torque transmission of ratchet wheel to valve body, two limit grooves are equipped on the outer edge of first pawl, two limit blocks are equipped on the inner wall of handle cover, when assembling, the limit block is arranged in the limit groove and can move in the limit groove circumferentially, and the rotation angle of handle cover relative to valve body is limited, the torsional spring is arranged between handle cover and fixed seat, and the upper end of torsional spring is fixedly connected with handle cover, and the lower end is fixedly connected with fixed seat.

2. The six-stroke, rebounding filler cap of claim 1 wherein: The fixed seat is equipped with a downwardly recessed groove, the middle part of the groove is equipped with a second sleeve, the sidewall of the second sleeve is equipped with a second clamping groove, the inside of the second sleeve is equipped with a guide column, the inner wall of the handle cover directly above the second sleeve is equipped with a downwardly extending first sleeve, the sidewall of the first sleeve is equipped with a first clamping groove, the upper end of the torsional spring is inserted into the first sleeve, and the end is clamped in the first clamping groove, the lower end of the torsional spring is inserted into the second sleeve, and the guide column is inserted into the center hole of the lower end of the torsional spring, and the end of the lower end of the torsional spring is clamped in the second clamping groove.

3. The six stroke, rebounding filler cap of claim 2 wherein: A plurality of through holes are arranged on the groove bottom surface of the second sleeve.

4. The six stroke, rebounding filler cap of claim 2 wherein: At least one lower lug is arranged on the edge of the bottom surface of the fixed seat, the lower lug is equipped with a third clamping groove with an opening downward, and the sidewall of the inner cavity of the valve seat is equipped with a plug plate corresponding to the third clamping groove, when assembling, the plug plate is inserted into the third clamping groove one by one.

5. The six stroke, rebounding filler cap of claim 1 wherein: The limit groove is arc-shaped, and the corresponding circumferential angle is 90°.

6. The six stroke, rebounding oil cap of claim 1 wherein: A plurality of notches are arranged on the limit block.

7. The six stroke, rebounding oil cap of claim 1 wherein: The two ends of the limit block are equipped with first sharp corners, the side surface of the first sharp corner forms an inner-enclosed first guide surface, the two ends of the limit groove are equipped with second sharp corners, the side surface of the second sharp corner forms an inner-enclosed second guide surface, when the limit block slides to the end of the limit groove, the first sharp corner is embedded in the inner side of the second sharp corner, so that the first guide surface and the second guide surface are attached.

8. The six stroke, rebounding filler cap of claim 1 wherein: The first pawl includes a tooth part and a spring arm integrally connected, one end of the spring arm is integrally connected to the inner ring of the wheel disc through a connecting part, the spring arm is arc-shaped, the tooth part is arranged on the end of the spring arm away from the connecting part, and the spring arm is higher than the connecting part in the axial direction, so that the spring arm and the wheel disc form an annular insertion slot, and the end of the first ratchet tooth is inserted into the annular insertion slot.

9. The six-response poppet filler cap as set forth in claim 1, wherein: The lower end of the valve body is equipped with a threaded part for threaded connection with the tubing head, and an annular groove is arranged above the threaded part of the valve body, and a sealing ring is arranged in the annular groove.

10. The six stroke, rebounding filler cap of claim 1 wherein: The connecting piece comprises a connecting ring, a connecting rope and a connecting seat, the two ends of the connecting rope are connected with the connecting ring and the connecting seat respectively, the connecting ring is sleeved on the handle cover and embedded in the first ring groove of the handle cover, and the connecting seat is connected to the vehicle body.

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