CN109624699B

CN109624699B - Oil filler cap of automobile oil tank

Info

Publication number: CN109624699B
Application number: CN201910109267.7A
Authority: CN
Inventors: 杨柳; 梁石平; 秦博; 张鹏; 黄琳; 陈兵超; 陈建春; 刘元炜
Original assignee: Xiangyang Guangrui Auto Parts Co ltd
Current assignee: Xiangyang Guangrui Auto Parts Co ltd
Priority date: 2019-02-07
Filing date: 2019-02-07
Publication date: 2020-09-18
Anticipated expiration: 2039-02-07
Also published as: CN109624699A

Abstract

The invention provides an automobile oil tank filler cap, which uses an automobile filler cap PUSH switch integrating opening, closing and locking functions, wherein the automobile filler cap PUSH switch realizes the functions of locking and unlocking the filler cap through the forward and reverse rotation of a motor; it has simplified the oil tank and has added oil cap structure, merges into a part with two parts of ejecting executor and locking motor, realizes the function of locking and unblock filler cap through the positive and negative rotation of motor.

Description

Oil filler cap of automobile oil tank

Technical Field

The invention belongs to the technology of vehicle body structural parts, and particularly relates to an automobile fuel tank filler cap, which uses an automobile fuel tank cap PUSH switch integrating the functions of opening, closing and locking.

Background

The appearance of the automobile fuel tank cover lock brings great convenience to automobile drivers. The outer appearance of the oil tank is more beautiful, and only one dustproof cover is added on the original oil tank cover, thereby replacing the complex structure of the traditional oil tank outer lock.

The lock body and the locking mechanism of automobile oil tank cover lock are all sealed and turn on in the automobile oil tank body, and the security performance is reliable high, and automobile oil tank cover lock mainly comprises parts such as lock body, lock core, shield, torsional spring, shell fragment, drive strip. When an automobile oil tank needs to be opened, the dust cap is pulled off anticlockwise by a key to be inserted into the lock cylinder, the lock cylinder rotates clockwise for 135 degrees, the eccentric pin shaft at the head of the lock cylinder drives the transmission strip to move, the transmission strip retracts, and the transmission strip is not blocked by the positioning block on the oil tank (the oil tank lock cap is rotated anticlockwise by a hand to enable the three elastic claw pieces on the oil tank cap to be aligned with the three openings on the oil tank core cylinder), and the oil tank cap can be opened by pulling upwards. When the oil tank needs to be locked, three elastic claw sheets on the oil tank cover are aligned to three gaps of the oil tank core cylinder, and the oil tank cover is pressed by hand to rotate clockwise until the oil tank is blocked. Then the key is rotated by 135 degrees anticlockwise, the transmission strip is inserted into the positioning block of the oil tank core cartridge to block the rotation of the oil tank cover, and the aim of locking is achieved. After the key is pulled out, the dust cover automatically returns under the action of the torsion spring.

In order to realize the opening and locking functions of the oil filler cover, two parts of an ejecting actuator and a locking motor are more frequently applied to the market. The executor realizes ejecting opening, and the motor rotates control pin axle and inserts the filler cap panel and come the locking filler cap, avoids driving the vehicle in-process and when parkking the filler cap to open. The structure has the advantages of various parts, high assembly time and large volume, and is not beneficial to the utilization of automobile space.

Disclosure of Invention

In order to overcome the technical problems in the prior art, the applicant provides an automobile oil tank filler cap which uses an automobile oil tank filler cap PUSH switch with opening, closing and locking functions, the automobile oil tank filler cap simplifies an oil tank filler cap structure, two parts of an ejecting actuator and a locking motor are combined into one part, and the functions of locking and unlocking the filler cap are realized through the positive and negative rotation of the motor.

According to the technical scheme, the automobile fuel tank filler cap is provided, the automobile fuel tank filler cap PUSH switch integrating the opening, closing and locking functions is used, and the automobile fuel tank filler cap PUSH switch realizes the functions of locking and unlocking the fuel tank filler cap through the forward and reverse rotation of the motor.

The automobile oil tank filler cap further comprises a limiting block, an ejector and a compression spring, and in an unlocking state, when a person presses the filler cap outside the automobile and needs to open the filler cap, the limiting block moves according to a designed track, so that the ejector is ejected out under the action of the compression spring, and the ejection function is realized; the ejector head rectangular structure 111b, the ejector head rotary groove 111c, and the ejector head cylindrical tube 111d are integrally injection molded, and then the ejector head rectangular structure, the ejector head rotary groove 111c, and the ejector head cylindrical tube 111d are secondarily injection molded to form an integral part ejector 111.

The automobile oil tank filler cap further comprises a guide structure, the ejector pops out to move linearly and simultaneously rotates 90 degrees under the action of the guide structure, and the ejector is separated from the filler cap cover plate to realize the function of opening the filler cap; the ejector head has a rectangular structure 111b with a long side of 10-12 mm and a short side of 5-7 mm.

Preferably, the ejector square-shaped stopper hole 111e, the locking shaft end 102a having a square shape, and the ejector square-shaped stopper hole 111e are engaged. The inner wall of the cylinder part 102b of the locking shaft is provided with a thread structure, and the locking shaft 102 is matched with a motor screw 104a on the motor 104 through the thread structure 102b on the inner wall, and can move forwards or backwards along the axial direction of the motor screw 104a under the driving of the rotation of the motor.

Further, the motor 104 can rotate forward and backward to control the end part 102a of the locking shaft to move forward and backward, when the end part 102a of the locking shaft moves and is inserted into the limiting hole 111e of the ejector 111, the locking function is realized, the oil filler cover is closed, and people cannot open the oil filler cover from the outside of the vehicle; after the end portion 102a of the lock shaft moves to be disengaged from the limit hole 111e of the ejector 111, the filler cap is in an unlocked state, and a person can perform a switching operation on the filler cap.

The automobile oil tank filler cap simplifies the structure of the oil tank filler cap, combines two parts of the ejected actuator and the locked motor into one part, and realizes the functions of locking and unlocking the filler cap through the forward and reverse rotation of the motor.

Under the unblock state, when the people pressed the filler cap outside the car, when will opening the filler cap, the stopper moved according to the orbit of design, made the ejector pop out under compression spring's effect, realized ejecting function. Meanwhile, the ejector can rotate 90 degrees while popping out linear motion under the action of the guide structure, and the ejector is separated from the oil filler cover plate to realize the function of opening the oil filler cover

When oil is added, the oil filler cover needs to be closed, the filler cover plate pushes the ejector to retreat and retract while a person presses the oil filler cover, the limiting block moves according to a designed track and enters a limiting state under the action of the spring, the ejector reversely rotates by 90 degrees while retracting, the end part of the ejector is matched with the oil filler cover, the ejector enters a closed state from an open state, and the limiting block resets so as to facilitate next-step movement.

Drawings

FIG. 1 is a schematic view of the position of a fuel filler cap assembled on a vehicle body according to the present invention;

FIG. 2 is a schematic view of a locked state of the fuel filler cap closed;

FIG. 3 is a schematic view of an unlocked state of the fuel filler cap, at which time the fuel filler cap is flipped open by about 2 degrees;

FIG. 4 is a schematic view of the filler cap fully opened, at about 90 degrees;

FIG. 5 is an exploded view of the filler cap PUSH switch according to the present invention;

FIG. 6 is a detail of the appearance of the PUSH switch shown in FIG. 5;

FIG. 7 is a schematic view of the unlocked state of the locking shaft;

FIG. 8 is a schematic view of a locked state of the lock shaft;

FIG. 9 is a schematic view showing the inner detail of the upper housing;

FIG. 10 is a schematic diagram of a spiral groove structure of the ejector;

FIG. 11 is a schematic view showing the relationship between the fuel lid and the ejector in the closed state of the fuel lid;

FIG. 12 is a schematic view showing the relationship between the filler cap and the ejector in the open state of the filler cap;

FIG. 13 is a schematic view of the fit relationship between the limiting block and the ejector and the peach-shaped structure;

FIG. 14 is a cross-sectional view of the fit relationship between the stopper and the ejector;

FIG. 15 is a schematic view in cross section of a peach-shaped structure;

FIG. 16 is a schematic diagram of the motion trajectory of the stop block in the peach-shaped configuration;

FIG. 17 is a first detailed cross-sectional view of the filler cap PUSH switch;

fig. 18 is a second detailed cross-sectional view of the filler cap PUSH switch.

The reference numerals indicated in the figures are as follows:

an oil filler cap base 2a, an oil filler cap rotating shaft 2b, an oil filler cap cover plate 2c, a hand pressing area 2d for opening and closing an oil filler cap, an upper shell 101, a locking shaft 102, a sealing ring 103, a motor 104, a lower shell 105, a motor connector 106, a first spring 107, a peach-shaped structure 108, a limiting block 109, a second spring 110, an ejector 111, an ejector rubber part 111a, an ejector head rectangular structure 111b, an ejector head rotating groove 111c, an ejector head cylindrical barrel 111d, an upper shell four boss feature 101a, an ejector square limiting hole 111e, a locking shaft end 102a, a locking shaft cylindrical barrel 102b, a motor screw 104a, an upper shell convex point structure 101b, an upper shell cylindrical guide groove 101c, an upper shell circular boss 101d, an ejector spiral groove 111f, an annular opening 2c-1 in the oil filler cap cover plate, an ejector head rectangular structure 111b, an ejector head rubber part, The oil filler cover plate comprises an annular opening 2c-1, an ejector head rectangular structure 111b, an ejector annular groove 111g, a limiting block semicircular ring part 109a, a limiting block protruding part 109b, a limiting block boss 109c, a central line included angle alpha of the 2 limiting block bosses 109c, a first step surface 108a, a second step surface 108b, a third step surface 108c, a fourth step surface 108d, a fifth step surface 108e, a sixth step surface 108f, a seventh step surface 108g, limiting walls 108h on two sides of a peach-shaped structure, a peach-shaped structure heart 108i and an upper shell rotating shaft 105 a.

Detailed Description

The invention is further illustrated below with reference to the figures and examples. In the following detailed description, certain exemplary embodiments of the present invention are described by way of illustration only. Needless to say, a person skilled in the art realizes that the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

The utility model provides a collection is opened, is closed and locking function's filler cap PUSH switch for car, it has simplified oil tank filler cap structure, merges into a part with two parts of ejecting executor and locking motor, realizes the function of locking and unblock filler cap through the positive and negative rotation of motor.

Under the unblock state, when the people pressed the filler cap outside the car, when will opening the filler cap, the stopper moved according to the orbit of design, made the ejector pop out under compression spring's effect, realized ejecting function. Meanwhile, the ejector can rotate 90 degrees while popping out linear motion under the action of the guide structure, and the ejector is separated from the oil filler cover plate to realize the function of opening the oil filler cover.

The fuel lid PUSH switch for an automobile integrating the opening, closing and locking functions according to the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a schematic view of the position of a fuel filler cap assembled on a vehicle body according to the present invention; FIG. 2 is a schematic view of a locked state of the fuel filler cap closed; FIG. 3 is a schematic view of an unlocked state of the fuel filler cap, at which time the fuel filler cap is flipped open by about 2 degrees; fig. 4 is a schematic view of the filler cap fully opened, which is about 90 ° open.

As shown in figure 1, the oil filler cover is arranged on the left rear side wall and the right rear side wall of the automobile body, the oil filler cover opens the oil filler, and the oil filler cover is closed and locked when a driver parks the automobile, so that the oil filler cover is prevented from being opened without any reason.

In the filler cap closed state shown in fig. 2, a filler cap cover plate 2c is mounted on the filler cap base 2a, and the filler cap cover plate 2c is rotated around the filler cap rotation shaft 2 b. The oil filler cover panel 2c is flush with the side wall, and the surface difference is zero. The opening or closing of the filler cap can be realized by pressing the hand pressing area 2d provided on the filler cap. As shown in fig. 3, open and press the hand that sets up on the filler cap and press regional 2d, the filler cap bullet is opened this moment, and filler cap base 2a is fixed motionless, and about 2 of filler cap panel 2c is rotatory around filler cap pivot 2b, and about 5 ~ 10mm of filler cap panel 2c height side wall, convenience of customers opens the filler cap. The filler cap panel 2c is rotated about the filler cap pivot axis 2b by about 90 deg., achieving the full opening of the filler cap as shown in fig. 4.

As shown in fig. 5, which is an exploded view of a fuel filler cap PUSH switch, fig. 5 is an exploded view of a PUSH switch, the fuel filler cap PUSH switch includes an upper housing 101, a locking shaft 102, a sealing ring 103, a motor 104, a lower housing 105, a motor connector 106, a first spring 107, a peach-shaped structure 108, a stopper 109, a second spring 110 and an ejector 111. The locking shaft 102 is engaged with a threaded rod on the motor 104 by a threaded structure on the inner wall, see detail section 2 of fig. 18. The locking shaft 102 is axially reciprocable, as described with reference to fig. 7 and 8 below. The motor 104 positively and negatively powers the axial reciprocation of the lock shaft 102. The ejector 111 is provided with a square limiting hole, when the locking shaft 102 moves and is inserted into the square hole of the ejector 111 under the action of the motor 104, the locking function of the oil filler cap is realized, the oil filler cap cannot be opened from the outside of the vehicle manually in the locked state, and the action description of the locking oil filler cap is referred to below. The second spring 110 is mounted in compression on a cylindrical boss on the lower housing 105 to provide the motive force for axial movement of the ejector 111, see detail section 1 of fig. 17. The ejector 111 has a spiral groove, and the axial movement is simultaneously realized by the rotation movement by cooperating with the salient point on the upper casing 101, as described with reference to fig. 9 and 10 below. The ejector 111 is provided with an annular groove which is assembled with the annular opening of the limiting block 109. The stopper 109 is axially linearly movable with the ejector 111, but does not rotate. The protruding structure of the stopper 109 is matched with the irregular groove in the peach-shaped structure 108, and can move along a specified track, as described in fig. 15 and 16 below. The first spring 107 is fixed to the lower housing 105, as shown in detail in fig. 17, which is shown in a compressed state, such that the protruding structure of the stopper 109 is always in close contact with the profiled groove of the peach-shaped structure 108. The movement is not disengaged. The sealing ring 103 is sleeved on the head of the upper shell 101 to prevent water from entering electrical components in the shell, and referring to fig. 17, a detailed sectional view 1, a motor connector 106 is connected with an automobile power supply to provide power for the motor to move.

As shown in fig. 6, fig. 6 is a detail of the appearance of the PUSH switch shown in fig. 5; the ejector head rectangular structure 111b, the ejector head rotary groove 111c, and the ejector head cylindrical tube 111 d-body are injection molded, and then injection molded with the ejector rubber part 111a to form an integral part ejector 111. The ejector head has a rectangular structure 111b with a long side of 10-12 mm and a short side of 5-7 mm. The rectangular structure 111b of the head part of the ejector can rotate 90 degrees clockwise and anticlockwise, and the structure is matched with the oil filler cover plate to realize the functions of locking and unlocking the oil filler cover, which is described in the following figures 11 and 12; and the oil filler cover plate can also be axially stretched and compressed to realize the function of ejecting the oil filler cover plate and the function of not blocking the closing of the oil filler cover, and the functions are described with reference to the following figures 9 and 10.

Four boss characteristics 101a of upper housing are arranged on upper housing 101 in a ring shape, and through this structure and filler cap base 2a assembled connection, fix on filler cap base 2 a.

7-8, FIG. 7 is a schematic view of the unlocked state of the locking shaft; fig. 8 is a schematic view showing a locked state of the lock shaft. The ejector square stopper hole 111e, the square lock shaft end 102a, and the ejector square stopper hole 111e are engaged. The inner wall of the cylinder part 102b of the locking shaft is provided with a thread structure, and the locking shaft 102 is matched with a motor screw 104a on the motor 104 through the thread structure 102b on the inner wall, and can move forwards or backwards along the axial direction of the motor screw 104a under the driving of the rotation of the motor. The motor 104 can control the end part 102a of the locking shaft to move forward and backward in a forward and reverse rotation mode, when the end part 102a of the locking shaft moves and is inserted into the limiting hole 111e of the ejector 111, the locking function is achieved, the oil filler cover is closed, and people cannot open the oil filler cover from the outside of the automobile; after the end portion 102a of the lock shaft moves to be disengaged from the limit hole 111e of the ejector 111, the filler cap is in an unlocked state, and a person can perform a switching operation on the filler cap.

As shown in fig. 9 and 10, fig. 9 is a detailed structure diagram of the inside of the upper shell; FIG. 10 is a schematic diagram of a spiral groove structure of the ejector; the upper shell salient point structure 101b is heart-shaped, the size of the large end is 2-3 mm, the upper shell salient point structure is an ejector spiral groove 111f on an ejector head cylindrical barrel 111d, the width of an opening is 0.2-1 mm larger than the size of a salient point, and the depth is about 2 mm. The ejector helical groove 111f may be engaged with the upper case bump structure 101 b. The upper case 101 is provided with an upper case cylindrical guide groove 101 c. While the ejector head cylinder 111d is linearly moved up and down along the upper-casing cylindrical guide groove 101c, the ejector 111 is rotated by 90 ° in the upper-casing cylindrical guide groove 101c because of the guide restriction action of the spiral groove 111f on the upper-casing convex point structure 101 b. At this time, the head rectangular structure 111b of the ejector 111 also rotates 90 °, and through the structure, the lock is engaged with the annular opening of the filler cap cover plate, so as to achieve the functions of locking and unlocking the filler cap, as described in fig. 11 and 12 below. The second spring 110 powers the axial movement of the ejector 111. An upper housing circular boss 101d is provided on the upper housing for purposes described with reference to fig. 13 and 14 below.

As shown in fig. 11 and 12, fig. 11 is a schematic view showing the matching relationship between the fuel lid and the ejector in the closed state of the fuel lid; FIG. 12 is a schematic view showing the relationship between the fuel lid and the ejector in the open state of the fuel lid. The oil filler cover plate is provided with an annular opening 2c-1 which is matched with an ejector head part rectangular structure 111b and an ejector head part rotating groove 111c, when the oil filler cover plate is in a closed state, the long edge of the ejector head part rectangular structure 111b is perpendicular to the long edge of the oil filler cover plate annular opening 2c-1, the length of the long edge of the ejector head part rectangular structure 111b is 1mm-3mm (preferably 2mm) greater than the length of the short edge of the oil filler cover plate annular opening 2c-1, so that the limiting is realized, and the oil filler cover plate is prevented from being opened without accident; when the oil filler cap needs to be opened, the ejector 111 rotates, the ejector head rectangular structure 111b is matched with the ejector head rotating groove 111c, in a closed state, the ejector head rectangular structure 111b also rotates 90 degrees, the long edge of the ejector head rectangular structure 111b is parallel to the oil filler cap cover plate annular opening 2c-1, the size of the ejector head rectangular structure 111b is 1mm-3mm (preferably 2mm) smaller than the size of the oil filler cap cover plate annular opening 2c-1, and the oil filler cap can be opened after spacing and disengaging. In a particular application, L_{The length of the long side of the ejector head rectangular structure 111b minus the length of the short side of the filler cap cover plate annular opening 2c-1}＝L_{The size of the annular opening 2c-1 of the filler cap cover plate minus the size of the ejector head rectangular structure 111b}。

As shown in fig. 13 and 14, fig. 13 is a schematic view of the fit relationship between the limiting block and the ejector and the peach-shaped structure; FIG. 14 is a cross-sectional view of the fit relationship between the stopper and the ejector; the groove depth of the ejector annular groove 111g is 1.5-3 mm. The limiting block 109 is sleeved on the ejector annular groove 111g of the ejector 111 through a limiting block semicircular part 109a, the thickness of the limiting block is 2-4 mm, the inner diameter of the limiting block semicircular part 109a is 10-14 mm, the diameter of the limiting block semicircular part is 0.2-0.5 mm larger than that of the ejector annular groove, and a boss 109c of the limiting block is matched with the circular boss 101d of the upper shell to prevent the limiting block from rotating in the circumferential direction. Alpha is the included angle of the central lines of 2 limit block bosses 109c, the included angle is 175-178 degrees, and when the limit block semicircular part 109a is assembled on the ejector annular open slot 111g, the interference range of 0.2-0.5 mm exists, so that the limit block semicircular part cannot be randomly disengaged. The stopper 109 is restricted from moving up and down along with the annular groove 111 g. Meanwhile, the limiting block 109 and the ejector annular groove 111g can perform relative rotation movement.

The limiting block 109 is matched with the ejector 111 and the peach-shaped structure 108, and the semi-circular ring part 109a of the limiting block is matched with the annular groove 111g of the ejector 111 and can rotate along the annular groove 111g but cannot be separated. The stopper projections 109b cooperate with the shaped grooves of the peach-shaped structure 108 to move along a predetermined trajectory, as described with reference to fig. 15 and 16.

FIG. 15 is a cross-sectional illustration of a peach-shaped structure, as shown in FIG. 15; the peach-shaped structure 108 is provided with a special-shaped groove, and the bottom of the special-shaped groove is provided with a first step surface 108a, a second step surface 108b, a third step surface 108c, a fourth step surface 108d, a fifth step surface 108e, a sixth step surface 108f and a seventh step surface 108g which are different in height. Limiting walls 108h are arranged on two sides of the peach-shaped structure, and a peach heart 108i is arranged on the peach-shaped structure. The first step surface 108a and the second step surface 108b are in smooth transition, the second step surface 108b is higher than the third step surface 108c by 0.4-1 mm, the third step surface 108c is higher than the fourth step surface 108d by 0.6mm, the fourth step surface 108d is higher than the fifth step surface 108e by 1mm, the fifth step surface 108e and the sixth step surface 108f are in smooth transition, and the sixth step surface 108f and the seventh step surface 108g are in smooth transition. The thickness of the step surface is between 1.3mm and 3.5 mm. The wall thickness of the limiting walls 108h at the two sides of the peach-shaped structure and the wall thickness of the peach-shaped structure heart 108i are 5mm-7 mm. Due to the existence of the step surfaces 108a-108g, the limiting side walls 108h and the peach heart 108i, the motion trail of the limiting block 109 is limited, and the limiting block can only move according to the motion trail shown in fig. 16 when being opened and closed, fig. 16 is a schematic diagram of the motion trail of the limiting block in the peach-shaped structure, and in the process of moving, due to the existence of the first spring 107, the protruding structure of the limiting block 109 is tightly attached to the special-shaped groove of the peach-shaped structure 108 and does not fall out.

Fig. 17 is a first detailed cross-sectional view of the filler cap PUSH switch, as shown in fig. 17 and 18; fig. 18 is a second detail sectional view 105a of the fuel lid PUSH switch showing the upper housing rotation axis, the peach-shaped structure 108 is fitted over the upper housing rotation axis 105a, and the peach-shaped structure 108 can rotate freely on the axis and also can translate along the axial direction. And is tightly attached to the limiting block 109 under the action of the first spring 107. The effectiveness of the movement is ensured. The second spring 110 is fitted over the upper housing 105 and is always in a compressed state, providing a restoring force to the ejector 111 and an ejecting force to eject the fuel lid. The sealing ring 103 is sleeved on the lower shell 101 and plays a role in sealing and waterproofing.

The steps of using the PUSH switch of the present invention are as follows:

when the oil filler cover is opened, a person presses the oil filler cover to PUSH the ejector 111 of the PUSH switch, and the ejector 111 drives the limiting block 109 to move in the peach-shaped structure 108 according to an opening track under the action of the person's hand and the second spring 110. The ejector 111 is ejected out under the action of the second spring 110 and rotates at the same time, and the rectangular structure 111b at the head of the ejector is separated from the oil filler cap, so that the functions of opening and ejecting the oil filler cap are realized.

When the oil filler cover is closed, a person presses the oil filler cover by hands to PUSH the ejector 111 of the PUSH switch to retract, and the ejector 111 drives the limiting block 109 to move according to a closing track in the peach-shaped 108 structure. The function of closing the oil filler cover is realized.

In the whole process of closing the oil filler cover, the peach-shaped structure 108 is always tightly attached to the limiting block 109 under the action of the first spring 107, and the motion is guaranteed to be effective.

[ when parking or lock car back, need locking filler cap ], motor 104 rotates, realizes the locking function in control locking axle 102 translation inserts the square spacing hole 111e of ejector, and the filler cap can't be opened to the people from the car outside. After the locking shaft 102 moves to be disengaged from the ejector square limiting hole 111e, the oil filler cover is in an unlocked state, and a person can perform switching operation on the oil filler cover.

The foregoing illustrates and describes the principles, essential features, and advantages of the patented technology. It will be understood by those skilled in the art that the present technology is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made to the technology without departing from the spirit and scope of the invention as claimed. The scope of the patent claims is defined by the appended claims and their equivalents.

Claims

1. A car fuel tank filler cap uses the car filler cap PUSH switch which integrates the opening, closing and locking functions, the car filler cap PUSH switch realizes the functions of locking and unlocking the filler cap through the positive and negative rotation of the motor;

the automobile oil tank filler cap is characterized by comprising a limiting block, an ejector, a compression spring and a guide structure, wherein in an unlocking state, when a person presses the filler cap outside the automobile and needs to open the filler cap, the limiting block moves according to a designed track, so that the ejector is ejected out under the action of the compression spring to realize an ejection function; after an ejector head rectangular structure (111 b), an ejector head rotating groove (111 c) and an ejector head cylindrical barrel (111 d) are integrally injection-molded, the ejector head rectangular structure and the ejector head rotating groove are secondarily injection-molded with an ejector rubber component (111 a) to form an integral part ejector (111); the ejector can rotate 90 degrees while popping out linear motion under the action of the guide structure, and the ejector is separated from the oil filler cover plate to realize the function of opening the oil filler cover; the ejector head part is of a rectangular structure (111 b), the long side dimension is 10mm-12mm, and the short side dimension is 5mm-7 mm;

the limiting block (109) is matched with the ejector (111) and the peach-shaped structure (108), and the semicircular part (109 a) of the limiting block is matched with the annular groove (111 g) of the ejector (111) and rotates along the annular groove (111 g) but cannot be disengaged; the protruding part (109 b) of the limiting block is matched with the special-shaped groove of the peach-shaped structure (108) and moves along a specified track;

wherein the groove depth of the annular groove (111 g) of the ejector is 1.5mm-3 mm; a limiting block (109) is sleeved on an ejector annular groove (111 g) of the ejector (111) through a limiting block semicircular part (109 a), the thickness of the limiting block is 2mm-4mm, the inner diameter of the limiting block semicircular part (109 a) is 10mm-14mm, the diameter of the limiting block semicircular part is 0.2mm-0.5mm larger than that of the ejector annular groove, and a boss (109 c) of the limiting block is matched with a circular boss (101 d) of the upper shell;

a peach-shaped structure (108) is provided with a special-shaped groove, and the bottom of the special-shaped groove is provided with a first step surface (108 a), a second step surface (108 b), a third step surface (108 c), a fourth step surface (108 d), a fifth step surface (108 e), a sixth step surface (108 f) and a seventh step surface (108 g) which are different in height; limiting walls (108 h) are arranged on two sides of the peach-shaped structure, and a peach heart (108 i) is arranged on the peach-shaped structure; the first step surface (108 a) and the second step surface (108 b) are in smooth transition, the second step surface (108 b) is 0.4-1 mm higher than the third step surface (108 c), the third step surface (108 c) is 0.6mm higher than the fourth step surface (108 d), the fourth step surface (108 d) is 1mm higher than the fifth step surface (108 e), the fifth step surface (108 e) and the sixth step surface (108 f) are in smooth transition, and the sixth step surface (108 f) and the seventh step surface (108 g) are in smooth transition.

2. The automobile fuel tank filler cap according to claim 1, characterized in that the ejector square limiting hole (111 e), the locking shaft end portion (102 a) having a square shape and the ejector square limiting hole (111 e) are engaged; the inner wall of the cylinder part (102 b) of the locking shaft is provided with a thread structure, the locking shaft (102) is matched with a motor screw (104 a) on the motor (104) through the thread structure on the inner wall, and the locking shaft is driven by the motor to move forwards or backwards along the axial direction of the motor screw (104 a).

3. The automobile fuel tank filler cap as claimed in claim 2, wherein the motor (104) rotates forward and backward to control the end (102 a) of the locking shaft to move forward and backward, when the end (102 a) of the locking shaft moves and is inserted into the limit hole (111 e) of the ejector (111), the locking function is realized, the filler cap is closed, and a person cannot open the filler cap from the outside of the automobile; when the end part (102 a) of the locking shaft moves to be disengaged from the limit hole (111 e) of the ejector (111), the oil filler cover is in an unlocked state, and a person performs opening and closing operations on the oil filler cover.