CN220973915U - Automobile fuel tank cap actuator - Google Patents

Abstract

The utility model provides an actuator for an automobile fuel tank cap, which comprises the following components: a housing; the pressing rod is arranged in the shell, the upper end of the pressing rod movably penetrates through the outside of the shell, and a locking groove is formed in the radial direction of the surface of the pressing rod; the locking assembly is positioned in the shell and comprises an elastic piece, a guide sleeve, a lock catch and a locking piece, wherein the elastic piece is arranged between the lower end of the pressing rod and the inside of the shell, the guide sleeve is fixedly arranged at the bottom end of the pressing rod, the lock catch is movably sleeved on the guide sleeve, the locking piece is arranged at one side of the pressing rod, a locking part is arranged on the locking piece, and the guide sleeve drives the lock catch to move up and down and be locked or separated from the locking part in the up-and-down movement process of the pressing rod; and the locking assembly is used for locking the position of the pressing rod in the shell. The automobile fuel tank cap actuator disclosed by the utility model combines an electric form with a mechanical form to lock or unlock the fuel tank cap door or the charging port cap door, and the whole actuator has a simple structure, is light and handy in design and is easy to use.

Description

Automobile fuel tank cap actuator

Technical Field

The utility model relates to the technical field of automobile accessories, in particular to an automobile fuel tank cap actuator.

Background

Nowadays, with the development of the automobile industry and the improvement of the automobile popularity, the performance requirements of people on the automobile are higher and higher, and the rapidness, convenience and safety of various operations of the automobile are also more important, so that the improvement of the automobile structure and the application of new technology are particularly important for automobile enterprises.

The automobile fuel tank cover actuator is a locking mechanism of a fuel tank cover and a charging cover and controls the opening and closing of the fuel tank. In the traditional structure, the small door of the oil filler cap or the small door of the charging cap is opened and closed, and most of the small doors are opened or closed in a mechanical mode, namely, the lock rod is fixed on the small door, the lock sleeve is fixed on the vehicle body seat, and the opening and the closing are realized by pressing or pulling the inhaul cable, so that the small door is easily influenced by external factors to cause misoperation.

In some related prior art, for example, patent publication CN109025558a discloses an actuator for a fuel tank cap of an automobile, which combines an electric form with a mechanical form to avoid misoperation, and plays a role of safety, so as to realize opening and closing of a fuel tank cap door or a charge port cap door. However, the fuel tank cap actuator has a complex structure, a plurality of parts and inconvenient assembly, which results in excessive cost and inconvenience in production and installation.

Disclosure of utility model

In view of the above, the utility model provides an actuator for a fuel tank cap of an automobile, which solves the problems of complex structure and high cost of the actuator for the fuel tank cap in the prior art.

The technical scheme of the utility model is realized as follows:

The utility model provides an actuator for an automobile fuel tank cap, which comprises the following components:

A housing;

The pressing rod is arranged in the shell, the upper end of the pressing rod movably penetrates through the outside of the shell, the pressing rod can move up and down in the shell and rotate, and a locking groove is formed in the surface of the pressing rod in the radial direction;

The locking assembly is positioned in the shell and comprises an elastic piece, a guide sleeve, a lock catch and a locking piece, wherein the elastic piece is arranged between the lower end of the pressing rod and the inside of the shell;

The locking assembly is arranged in the shell and comprises a locking piece and a driving device, wherein the driving device is used for driving the locking piece to enter and exit the locking groove so as to enable the pressing rod to be locked in position in the shell.

On the basis of the technical scheme, preferably, the shell comprises a lower shell and an upper shell connected with the lower shell, the top of the upper shell is provided with a sleeve, the upper end of the pressing rod penetrates through the sleeve, the pressing rod is in clearance fit with the sleeve, the inner top surface of the lower shell is provided with a positioning rod, an installation cavity for the insertion of the positioning rod is formed in the bottom end axis of the pressing rod, the elastic piece is located in the installation cavity, the upper end of the elastic piece abuts against the top surface of the installation cavity, and the lower end of the elastic piece abuts against the positioning rod.

Further, preferably, the lower end of the sleeve extends into the upper housing, the pressing rod surface is provided with a spiral groove along the axial direction thereof, and the inner wall of the sleeve is provided with a guide protrusion matched with the spiral groove.

On the basis of the technical scheme, preferably, the locking piece is vertically arranged in the shell, the upper end of the locking piece is rotationally connected with the inner wall of the upper shell, the locking piece comprises a plate body, a guide groove is formed in the upper end of one face of the plate body, which faces the pressing rod, the lower end of the guide groove is provided with a locking groove communicated with the guide groove, and the locking part is arranged in the locking groove and used for locking with the lock catch.

Further, preferably, the locking portion has a triangular structure, a first channel is formed between the left side of the locking portion and the locking groove, a second channel is formed between the right side of the locking portion and the locking groove, the first channel and the second channel are both communicated with the guide groove, a clamping groove matched with the lock catch is formed at the lower end of the locking portion, and a guide surface inclined towards the second channel is formed on the inner wall of the locking groove below the clamping groove.

Still further, preferably, the upper end opening size of the guide groove is larger than the lower end opening size, and an inner wall of the guide groove communicating with the second passage is located above the first passage.

On the basis of the technical scheme, preferably, the lock catch comprises a lock sleeve with a semicircular structure, an annular groove is formed in the peripheral wall of the guide sleeve, the lock sleeve is rotatably arranged in the annular groove, and the outer surface of the lock sleeve is provided with a clamping protrusion matched with the clamping groove.

Further, preferably, the lower portion of the plate body has an insertion opening communicating with the locking groove, and the insertion opening is used for allowing the engaging protrusion to enter the locking groove.

On the basis of the technical scheme, preferably, the locking piece comprises a rack and a stop part fixedly arranged at the end part of the rack, the driving device comprises a motor and a gear, an output shaft of the motor is connected with the gear, the rack is horizontally arranged in the shell, and the gear is meshed with the rack.

Preferably, the top end of the pressing rod is fixedly provided with a buffer piece, and a sealing piece is arranged at the joint of the pressing rod and the shell.

Compared with the prior art, the utility model has the following beneficial effects:

(1) The automobile fuel tank cap actuator disclosed by the utility model combines an electric form with a mechanical form to lock or unlock the fuel tank cap door or the charging port cap door, and the whole actuator has a simple structure, is light and handy in design and is easy to use;

(2) In addition, the pressing rod and the guide sleeve can rotate relative to the lock catch in the rotating process, the lock catch does not rotate greatly, the upper end of the locking piece is in rotary connection with the inner wall of the upper shell, and the locking piece can be driven to slightly swing in the downward moving process of the lock catch along the locking piece, so that the clamping protrusion on the lock catch can flexibly slide in the guide groove and the locking groove and realize locking or separation with the locking part;

(3) Through having the inserted hole that is linked together with the locking groove in the plate body lower part, when the hasp is installed between guide way and locking piece, thereby make the lock detain on the joint protruding slide into the locking inslot along the inserted hole upwards, easily realize the hasp and be connected between guide way and locking piece, whole structure equipment is convenient.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of an actuator for an automotive fuel tank cap according to the present disclosure;

FIG. 2 is an exploded schematic view of the disclosed automotive fuel tank cap actuator;

FIG. 3 is a schematic view of the assembly structure of the pressing rod, the locking assembly and the locking assembly disclosed by the utility model;

FIG. 4 is a top view of the disclosed automotive fuel tank cap actuator;

FIG. 5 is a schematic plan view of the structure at A-A in FIG. 4;

FIG. 6 is a schematic view of the planar structure at B-B in FIG. 4;

FIG. 7 is a schematic perspective view of a locking member according to the present utility model;

reference numerals:

1. A housing; 2. pressing a pressing rod; 21. a spiral groove; 22. a locking groove; 3. a locking assembly; 31. an elastic member; 32. a guide sleeve; 33. locking; 34. a locking member; 4. a locking assembly; 41. a locking member; 42. a driving device; 11. an upper housing; 12. a lower housing; 121. a positioning rod; 111. a sleeve; 1111. a guide protrusion; 23. a mounting cavity; 341. a plate body; 342. a guide groove; 343. a locking groove; 344. a locking part; 3431. a first channel; 3432. a second channel; 3441. a clamping groove; 3433. a guide surface; 331. a lock sleeve; 332. the clamping bulge; 321. an annular groove; 345. an insertion port; 411. a rack; 412. a stopper; 421. a motor; 422. a gear; 24. a buffer member; s, sealing piece.

Detailed Description

The following description of the embodiments of the present utility model will clearly and fully describe the technical aspects of the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, are intended to fall within the scope of the present utility model.

As shown in fig. 1, in combination with fig. 2 to 6, the present utility model provides an actuator for a fuel tank cap of an automobile, which includes a housing 1, a pressing rod 2, a locking assembly 3, and a locking assembly 4.

The pressing rod 2 is vertically arranged inside the shell 1, the upper end of the pressing rod movably penetrates through the outside of the shell 1 and can move up and down in the shell, and specifically, one end of the pressing rod 2 extending out of the shell 1 is used for being in contact with the surface of the filler cap door or the charging cap door, so that the pressing rod 2 extends out or retracts relative to the shell 1 through pressing the filler cap door or the charging cap door.

The locking component 3 is used for mechanically controlling the pressing rod 2 to extend or retract in the shell 1 and keeping the position fixed, specifically, the locking component 3 is positioned in the shell 1 and comprises an elastic piece 31, a guide sleeve 32, a lock catch 33 and a locking piece 34, the elastic piece 31 is arranged between the lower end of the pressing rod 2 and the inside of the shell 1, the guide sleeve 32 is fixedly arranged at the bottom end of the pressing rod 2, the locking piece 34 is arranged on one side of the pressing rod 2, a locking part 344 is arranged on the locking piece 34, one end of the lock catch 33 is movably sleeved on the guide sleeve 32, the lock catch can swing relative to the circumferential direction of the guide sleeve, meanwhile, the pressing rod 2 can rotate while the shell 1 moves up and down, and the guide sleeve 32 drives the lock catch 33 to move up and down in the process of moving the pressing rod 2 so as to lock or separate the other end of the lock catch 33 from the locking part 344.

By adopting the above structure, the automobile fuel tank cap actuator disclosed by the embodiment is arranged at the fuel tank opening of an automobile, the small door of the fuel tank opening is in a closed state, the pressing rod 2 is in a compressed state, the lock catch 33 on the guide sleeve 32 and the locking part 344 on the locking piece 34 are in a locking connection state, when the small door of the fuel tank opening is required to be opened, downward pressure is applied to the pressing rod 2 by pressing the small door of the fuel tank opening, the pressing rod 2 moves downward and rotates together with the guide sleeve 32, the guide sleeve drives the lock catch 33 to move downward, meanwhile, the guide sleeve 32 rotates relative to the lock catch 33, the large rotation of the lock catch 33 can be avoided, the lock catch 33 can slightly swing relative to the circumference of the guide sleeve 32 in the process of moving up and down, the lock catch 33 and the locking part 344 can be flexibly realized in the process of moving up and down, the pressing rod 2 stretches out from the inside the shell 1 under the action of the elastic piece 31, so that the small door of the fuel tank opening is required to be opened, when the small door of the fuel tank opening is required to be closed, the small door of the fuel tank opening is required to be pressed, the pressing rod 2 is pressed down, the lock catch 2 is driven, the lock catch 2 is rotated together with the guide sleeve 32, and the lock catch 33 is moved downward, and the lock catch 33 is slightly is moved relative to the lock catch 33, and the small door is slightly moved in the process, and the compression part is realized.

In order to avoid false touching, the present embodiment is further provided with a locking groove 22 in the radial direction of the surface of the pressing rod 2 for cooperating with the locking assembly 4. Specifically, the locking assembly 4 is disposed in the housing 1, and includes a locking member 41 and a driving device 42, where the driving device 42 is used to drive the locking member 41 into and out of the locking slot 22, so as to lock the pressing rod 2 in position in the housing 1. When the small oil port cover door is required to be sprung, the driving device 42 drives the locking piece 41 to separate from the locking groove 22 on the pressing rod 2 under the action of an electric control mode, so that the small oil port cover door is sprung or closed, after oiling is finished and the small oil port cover door is closed, the driving device 42 drives the locking piece 41 to enter the locking groove 22 on the pressing rod 2, so that the relative positions of the pressing rod 2 and the shell 1 are kept fixed, and the small oil port cover door is prevented from being sprung by mistakenly touching and pressing.

The automobile fuel tank cap actuator disclosed by the utility model combines an electric form with a mechanical form to lock or unlock the fuel tank cap door or the charging port cap door, and the whole actuator has a simple structure, is light and handy in design and is easy to use.

In order to facilitate the installation of the pressing rod 2, the locking assembly 3 and the locking assembly 4 in the housing 1, referring to fig. 2-6, in this embodiment, the housing 1 is provided with an upper housing 11 and a lower housing 12 that are connected up and down, an installation space for accommodating the pressing rod 2, the locking assembly 3 and the locking assembly 4 is formed between the upper housing 11 and the lower housing 12, and the upper housing 11 and the lower housing 12 may be fixed by adopting a bolt connection manner or may be connected and fixed by adopting a fastening manner.

In this embodiment, the top of the upper housing 11 has a sleeve 111, the upper end of the pressing rod 2 passes through the sleeve 111, the pressing rod 2 is in clearance fit with the sleeve 111, the inner top surface of the lower housing 12 is provided with a positioning rod 121, the bottom axis of the pressing rod 2 is provided with a mounting cavity 23 into which the positioning rod 121 is inserted, and the elastic member 31 is located in the mounting cavity 23, the upper end thereof abuts against the top surface of the mounting cavity 23, and the lower end thereof abuts against the positioning rod 121. By providing the sleeve 111, the pressing rod 2 can be axially positioned, the pressing rod 2 and the positioning rod 121 are kept in coaxial cooperation, and smooth movement of the pressing rod 2 relative to the positioning rod 121 in the pressing process is ensured. The elastic piece 31 is arranged in the mounting cavity 23, and meanwhile, the positioning rod 121 is inserted into the mounting cavity 23, so that the assembly structure among all parts is compact, and the whole actuator is small in structure.

In order to realize the up-and-down movement and rotation of the pressing rod 2 in the housing, the present embodiment extends the lower end of the sleeve 111 to the inside of the upper housing 11, the surface of the pressing rod 2 is provided with a spiral groove 21 along the axial direction thereof, and the inner wall of the sleeve 111 has a guide protrusion 1111 that mates with the spiral groove 21. Thus, in the installation process of the pressing rod 2, the upper end of the pressing rod 2 passes through the sleeve 111 from the upper shell 11, in the process that the pressing rod 2 passes through the sleeve 111, the guide protrusion 1111 of the inner wall of the sleeve 111 is matched with the spiral groove 21, so that the pressing rod 2 is rotated in the downward movement process of the pressing rod 2 in the sleeve 111 in the pressing process, and meanwhile, the pressing rod 2 is ensured to move downwards relative to the axis of the positioning rod 121 under the matching of the guide protrusion 1111 and the spiral groove 21.

In order to achieve locking or disengagement of the lock catch 33 and the locking member 34, this embodiment shows a specific structural mode of the locking member 34, in this embodiment, referring to fig. 7, the locking member 34 is vertically disposed in the housing 1, an upper end of the locking member 34 is rotatably connected with an inner wall of the upper housing 11, the locking member 34 includes a plate body 341, an upper end of a surface of the plate body 341 facing the pressing rod 2 has a guide groove 342, a lower end of the guide groove 342 has a locking groove 343 communicating with the guide groove 342, and the locking portion 344 is disposed in the locking groove 343 for locking with the lock catch 33.

By adopting the technical scheme, in the initial state, the small door of the filler cap at the filler opening is in a closed state, the pressing rod 2 is in a compressed state, and the lock catch 33 on the guide sleeve 32 and the locking groove 343 on the locking piece 34 are in a locking connection state.

When the small door of the filler cap needs to be opened, downward pressure is applied to the pressing rod 2 by pressing the small door of the filler cap, the pressing rod 2 drives the lock catch 33 to move downwards through the guide sleeve 32 and separate the lock catch 33 from the locking groove 343, under the action of the elastic piece 31, the pressing rod 2 drives the lock catch 33 to move upwards from the locking groove 343 to enter the guide groove 342, at the moment, the shell 1 of the pressing rod 2 stretches out, so that the small door of the filler cap is sprung out, when the small door of the filler cap needs to be closed, downward pressure is applied to the pressing rod 2, the pressing rod 2 compresses the elastic piece 31 and retracts in the shell 1, so that the lock catch 33 is driven to move downwards in the guide groove 342, the lock catch 33 and the locking part 344 are locked, and therefore the small door of the filler cap is closed at the filler cap is realized.

In order to smoothly lock or disengage the lock catch 33 from the locking portion 344 during the up-and-down movement, the embodiment adopts a technical scheme that, specifically, the locking portion 344 has a triangular structure, a first channel 3431 is formed between the left side of the locking portion 344 and the locking groove 343, a second channel 3432 is formed between the right side of the locking portion 344 and the locking groove 343, the first channel 3431 and the second channel 3432 are both communicated with the guiding groove 342, a clamping groove 3441 matched with the lock catch 33 is arranged at the lower end of the locking portion 344, and a guiding surface 3433 inclined towards the second channel 3432 is arranged on the inner wall of the locking groove 343 below the clamping groove 3441.

With the above technical solution, when the latch 33 and the locking portion 344 are in the disengaged state, the latch 33 is located in the guide groove 342, when the pressing rod 2 is pressed downward, the latch 33 moves downward along the guide groove 342, first passes through the first channel 3431, when the latch 33 moves downward, the latch 33 slides along the right surface of the locking portion 344, when the latch 33 slides to the bottom end of the locking portion 344, the latch 33 and the locking portion 344 are locked with each other by the clamping groove 3441, when the latch 33 and the locking portion 344 are required to be disengaged, downward pressure is applied to the pressing rod 2, the latch 33 moves downward from the bottom surface of the clamping groove 3441 and passes through the clamping groove 3441, and upward enters the guide groove 342 through the second channel 3432, and it is worth noting that, after the latch 33 is pressed downward from the clamping groove 3341 and touches the guide surface 3433, the latch 33 slides toward the second channel 3432 under the guide action of the guide surface 3433, so that the latch 33 smoothly enters the second channel 3432, and the latch 33 is driven by the elastic force of the elastic member 31 to move upward by the latch 33 and the elastic member so that the latch 33 is pushed upward and the guide rod 33 enters the guide groove 342.

As some preferred embodiments, the upper end opening size of the guide groove 342 is larger than the lower end opening size, and the inner wall of the guide groove 342 communicating with the second channel 3432 is located above the first channel 3431. Thus, when the lock catch 33 is located in the guide groove 342, the lock catch 33 moves downward along the guide groove 342 when the pressing rod 2 is pressed downward, and the lock catch 33 can directly enter the first channel 3431, and the lock catch 33 falls on the surface of the locking part 344 facing the first channel 3431, so that the lock catch 33 is prevented from entering the second channel 3432 in the downward movement process, and the movement sequence of the lock catch 33 is ensured to be orderly carried out.

In this embodiment, the lock catch 33 includes a lock sleeve 331 with a semicircular structure, an annular groove 321 is provided on the outer peripheral wall of the guide sleeve 32, the lock sleeve 331 is rotatably disposed in the annular groove 321, and a locking protrusion 332 adapted to the locking groove 3441 is provided on the outer surface of the lock sleeve 331. By adopting the above technical scheme, through setting up the lock sleeve 331 of semicircle ring structure, conveniently horizontal inserting locates the ring channel 321 on uide bushing 32 surface, in addition, press lever 2 and uide bushing 32 in rotatory in-process, can make above-mentioned whole rotatory for hasp 33, hasp 33 does not take place great rotation, because locking piece 34 upper end and last casing 11 inner wall of this embodiment are in the swivelling joint, consequently, at hasp 33 along locking piece 34 downwardly moving in-process, can order about locking piece 34 to do slight swing, thereby make the joint protruding 332 on the hasp 33 can be flexible slide in guide slot 342, locking slot 343 and realize with locking part 344 locking or break away from.

In some embodiments, the lower portion of the plate body 341 has an insertion opening 345 in communication with the locking groove 343, the insertion opening 345 for the snap-in protrusion 332 to enter into the locking groove 343. Therefore, when the lock catch 33 is installed between the guide groove 342 and the locking piece 34, the clamping protrusion 332 on the lock catch 33 slides upwards along the insertion opening 345 to enter the locking groove 343, the connection of the lock catch 33 between the guide groove 342 and the locking piece 34 is easily realized, and the whole structure is convenient to assemble.

In order to fix the relative positions of the pressing rod 2 and the housing 1, the locking member 41 in this embodiment includes a rack 411 and a stop portion 412 fixedly disposed at an end portion of the rack 411, the driving device 42 includes a motor 421 and a gear 422, an output shaft of the motor 421 is connected with the gear 422, the rack 411 is horizontally disposed in the housing 1, and the gear 422 is engaged with the rack 411. Thus, the motor 421 rotates to drive the gear 422 to rotate, and the gear 422 drives the rack 411 to move horizontally, so that the stop part 412 at the end part of the rack 411 enters and exits the locking groove 22 on the pressing rod 2. Thereby keeping the relative position of the pressing rod 2 and the shell 1 fixed and avoiding the small door of the oil port cover from being pressed by touching by mistake to spring open.

As some other embodiments, the top end of the pressing rod 2 is fixedly provided with the buffer piece 24, so that damage to the filler cap door or the charging cap door caused by the pressing rod 2 can be avoided. The sealing piece S is arranged at the joint of the pressing rod 2 and the shell 1, so that the motor 421 is prevented from being damaged by rainwater penetrating through the joint of the pressing rod 2 and the shell 1.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (10)

1. An automotive fuel tank cap actuator, comprising:

a housing (1);

the pressing rod (2) is arranged in the shell (1), the upper end of the pressing rod (2) movably penetrates through the outside of the shell (1), the pressing rod (2) can move up and down in the shell (1) and rotate, and a locking groove (22) is formed in the radial direction of the surface of the pressing rod (2);

The locking assembly (3) is positioned in the shell (1) and comprises an elastic piece (31), a guide sleeve (32), a lock catch (33) and a locking piece (34), wherein the elastic piece (31) is arranged between the lower end of the pressing rod (2) and the inside of the shell (1), the guide sleeve (32) is fixedly arranged at the bottom end of the pressing rod (2), the locking piece (34) is arranged at one side of the pressing rod (2), a locking part (344) is arranged on the locking piece (34), one end of the lock catch (33) is movably sleeved on the guide sleeve (32), the lock catch (33) can swing relative to the circumferential direction of the guide sleeve (32), and in the process of moving up and down the pressing rod (2), the guide sleeve (32) drives the lock catch (33) to move up and down so that the other end of the lock catch and the locking part (344) are locked or separated;

The locking assembly (4) is arranged in the shell (1) and comprises a locking piece (41) and a driving device (42), and the driving device (42) is used for driving the locking piece (41) to enter and exit the locking groove (22) so as to enable the pressing rod (2) to be locked in position in the shell (1).

2. The automotive fuel tank cap actuator of claim 1, wherein: the casing (1) includes casing (12) down and goes up casing (11) that are connected with casing (12) down, go up casing (11) top and have sleeve (111), the upper end of pressing rod (2) passes sleeve (111), pressing rod (2) and sleeve (111) clearance fit, top surface is provided with locating lever (121) in casing (12) down, pressing rod (2) bottom axis department has installation cavity (23) that supply locating lever (121) to insert, elastic component (31) are located installation cavity (23), and its upper end supports with installation cavity (23) top surface and holds, and the lower extreme supports with locating lever (121).

3. The automotive fuel tank cap actuator of claim 2, wherein: the lower end of the sleeve (111) extends into the upper shell (11), a spiral groove (21) is formed in the surface of the pressing rod (2) along the axial direction of the pressing rod, and a guide protrusion (1111) matched with the spiral groove (21) is formed in the inner wall of the sleeve (111).

4. The automotive fuel tank cap actuator of claim 2, wherein: the locking piece (34) is vertically arranged in the shell (1), the upper end of the locking piece (34) is rotationally connected with the inner wall of the upper shell (11), the locking piece (34) comprises a plate body (341), a guide groove (342) is formed in the upper end of one face of the plate body (341) facing the pressing rod (2), a locking groove (343) communicated with the guide groove (342) is formed in the lower end of the guide groove (342), and a locking part (344) is arranged in the locking groove (343) and used for locking with the lock catch (33).

5. The automotive fuel tank cap actuator of claim 4, wherein: the locking part (344) is of a triangle structure, a first channel (3431) is formed between the left side of the locking part (344) and the locking groove (343), a second channel (3432) is formed between the right side of the locking part (344) and the locking groove (343), the first channel (3431) and the second channel (3432) are communicated with the guide groove (342), the lower end of the locking part (344) is provided with a clamping groove (3441) matched with the lock catch (33), and the inner wall of the locking groove (343) below the clamping groove (3441) is provided with a guide surface (3433) inclined towards the second channel (3432).

6. The automotive fuel tank cap actuator of claim 5, wherein: the upper end opening size of the guide groove (342) is larger than the lower end opening size, and the inner wall of the guide groove (342) communicated with the second channel (3432) is positioned above the first channel (3431).

7. The automotive fuel tank cap actuator of claim 5, wherein: the lock catch (33) comprises a lock sleeve (331) with a semicircular annular structure, an annular groove (321) is formed in the peripheral wall of the guide sleeve (32), the lock sleeve (331) is rotatably arranged in the annular groove (321), and a clamping protrusion (332) matched with the clamping groove (3441) is arranged on the outer surface of the lock sleeve (331).

8. The automotive fuel tank cap actuator of claim 7, wherein: the lower part of the plate body (341) is provided with an inserting port (345) communicated with the locking groove (343), and the inserting port (345) is used for enabling the clamping protrusion (332) to enter the locking groove (343).

9. The automotive fuel tank cap actuator of claim 1, wherein: the locking piece (41) comprises a rack (411) and a stop part (412) fixedly arranged at the end part of the rack (411), the driving device (42) comprises a motor (421) and a gear (422), an output shaft of the motor (421) is connected with the gear (422), the rack (411) is horizontally arranged in the shell (1), and the gear (422) is meshed and connected with the rack (411).

10. The automotive fuel tank cap actuator of claim 1, wherein: the top end of the pressing rod (2) is fixedly provided with a buffer piece (24), and a sealing piece (S) is arranged at the joint of the pressing rod (2) and the shell (1).