Push rod structure of actuator of automotive fuel tank cap or charging port cap and actuator

Abstract

The push rod structure comprises a push rod body and a buffer cushion, an assembling hole used for installing the buffer cushion is formed in the end portion of the push rod body, a lining rod is arranged in the assembling hole, an inserting hole is formed in the end face of the buffer cushion, and the lining rod and the inserting hole are assembled. The buffering cushion is used for supporting the buffering cushion to prevent looseness and comprises a cap end and a cushion body entering an assembly hole, and ribs are arranged on the side face of the cushion body. The lining rod is arranged in the push rod body and assembled with the insertion hole in the surface of the buffer pad to support the buffer pad to prevent looseness, when the buffer pad is pressed to a target position, the insertion hole can wrap the lining rod, wrapping force is increased, the risk of falling off is reduced, and the push rod is convenient to install and convenient to popularize and use.

Description

Technical Field

[0001] The utility model belongs to the field of vehicle part actuators, and in particular relates to a push rod structure of a vehicle fuel tank cap or charging port cap actuator and an actuator. Background Art

[0002] The actuator is used to open and close the small door of the car's fuel filler cap or charging port cap. Most existing actuators use mechanical methods to unlock or lock. The lock is closed by pressing the push rod structure, and the unlock is opened by pressing the push rod again. It is also equipped with an electric locking mechanism for complete locking. The push rod structure is the direct operating component of the mechanical opening and closing, and its service life and operating comfort are particularly important.

[0003] In order to improve operating comfort and service life, a buffer pad must be assembled at the end of the push rod of the fuel filler cap or charging port cap actuator. There are two main solutions on the market: one is to directly overmold the push rod with the buffer pad during the injection molding process of the push rod, which has a complex manufacturing process and relatively high cost; the other solution is to directly extrude the buffer pad into the mounting hole of the push rod. The inner diameter of the push rod mounting hole is consistent with the outer diameter of the buffer pad and the entire surface is in contact with the installation, which makes assembly more difficult. Utility Model Content

[0004] The purpose of the present utility model is to provide a push rod structure and an actuator for a vehicle fuel tank cap or charging port cap actuator in order to solve the above problems.

[0005] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0006] A push rod structure for an actuator of a vehicle fuel tank cap or charging port cap, used for opening and closing the actuator, includes a push rod body and a buffer pad, wherein the end of the push rod body is provided with an assembly hole for installing the buffer pad, wherein an inner lining rod is provided in the assembly hole, and an insertion hole is provided on the end face of the buffer pad, and the inner lining rod is assembled with the insertion hole to support the buffer pad to prevent loosening, and the buffer pad includes a cap end and a pad body entering the assembly hole, wherein ribs are provided on the side of the pad body, and when the buffer pad enters the assembly hole, the ribs are easily deformed to ensure that the buffer pad can be easily and smoothly installed in the assembly hole.

[0007] As a further optimization solution of the present invention, the edges of the pad body and the edges of the socket are provided with arc chamfers, which facilitates assembly and reduces the precision requirements of the assembly equipment.

[0008] In order to apply the above-mentioned push rod structure, the present invention also proposes an actuator for a vehicle fuel tank cap or charging port cap, including the above-mentioned push rod structure and a shell. The push rod structure is telescopically arranged in the shell, and the push rod structure maintains the tendency to extend by an elastic member. A lock and a lock rail are also provided in the shell. The middle part of the lock is hinged in the shell, one end is connected to the push rod structure, and the other end is slidably connected to the lock rail. The lock rail has two tracks, which align the two tracks with the lock at different positions and restrict the rotation of the lock by rotating the lock rail itself. When the lock rail slides in the lock rail, the track aligned with the lock rail is switched in sequence by a guide structure. This manual locking structure and electric locking structure are existing technologies. Their purpose is to complete unlocking and locking by manually pressing the push rod structure. Specifically, when the push rod structure is pressed, the lock is driven to rotate, and one end of the lock slides in the lock rail and is supported by the track of the lock rail. Pressing the push rod structure again causes the lock end to enter the other track of the lock rail, so that the push rod is supported in different positions, thereby completing unlocking and locking.

[0009] As a further optimization scheme of the present utility model, an electric locking mechanism is also provided in the shell, which includes a bidirectional self-holding electromagnet and a lock tongue rod, wherein a toggle piece is rotatably provided in the shell, and the lock tongue rod fixes the lock rail through the toggle piece, and one end of the lock tongue rod extends into the travel path of the push rod structure to prevent the push rod structure from being manually unlocked. The electric locking mechanism is used to completely lock the push rod structure to prevent the push rod structure from being manually unlocked, completely restrict the lock rail through the electromagnet, and hinder the return stroke of the push rod structure through the lock tongue rod to prevent manual unlocking.

[0010] As a further optimization solution of the present invention, the shell is divided into an upper shell and a lower shell, and the upper shell and the lower shell are connected and fixed by mechanical means.

[0011] As a further optimization solution of the present invention, one end of the lock tongue rod is further provided with a safety rope extending to the outside of the housing, which is used to pull the lock tongue rod in the event of a power failure.

[0012] The beneficial effects of the present invention are:

[0013] The utility model is to assemble an inner lining rod and a socket on the surface of the buffer pad in the push rod body to support the buffer pad to prevent loosening. When the buffer pad is pressed to the target position, the socket can wrap the inner lining rod, increase the wrapping force, reduce the risk of falling off, and is easy to install and promote for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a cross-sectional view of the push rod structure of the present utility model.

[0015] Figure 2 It is a three-dimensional diagram of the push rod structure of the present utility model.

[0016] Figure 3 It is a sectional view of the push rod body of the present utility model.

[0017] Figure 4 It is a schematic diagram of a buffer pad of the present utility model.

[0018] Figure 5 It is a schematic diagram of the actuator of the present utility model.

[0019] Figure 6 It is a schematic diagram of the push rod structure of the utility model in the unlocked state.

[0020] Figure 7 It is a schematic diagram of the push rod structure of the utility model in a locked state.

[0021] Figure 8 It is a schematic diagram of a bidirectional self-holding electromagnet of the utility model.

[0022] Figure 9 It is a schematic diagram of the state of the lock tongue rod of the bidirectional self-holding electromagnet of the utility model.

[0023] In the figure: 1. Upper shell; 2. Lower shell; 3. Push rod body; 301. Assembly hole; 302. Lining rod; 4. Lock buckle; 5. Lock rail; 6. Bidirectional self-holding electromagnet; 601. Lock tongue rod; 602. Wire; 603. Permanent magnet; 604. Excitation coil; 605. Through hole; 606. Armature core; 7. Waterproof plug; 8. Dust cover; 9. Buffer pad; 901. Rib; 902. Jack; 10. Elastic part; 11. Control unit; 12. Safety rope. DETAILED DESCRIPTION

[0024] The present application is described in further detail below in conjunction with the accompanying drawings. It is necessary to point out that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technicians in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0025] Example 1

[0026] like Figure 1-4 As shown, a push rod structure of a vehicle fuel tank cap or charging port cap actuator is used to open and close the actuator, including a push rod body 3 and a buffer pad 9. The end of the push rod body 3 is provided with an assembly hole 301 for installing the buffer pad 9, wherein an inner lining rod 302 is provided in the assembly hole 301, and a socket 902 is provided on the end face of the buffer pad 9. The inner lining rod 302 is assembled with the socket 902 to support the buffer pad 9 to prevent it from loosening. When the buffer pad 9 is pressed to the target position, the socket 902 can wrap the inner lining rod 302, thereby increasing the wrapping force and reducing the risk of falling off.

[0027] The buffer pad 9 includes a cap end and a pad body that enters the assembly hole 301, wherein ribs 901 are provided on the side of the pad body. When the buffer pad 9 enters the assembly hole 301, the ribs 901 are easily deformed to ensure that the buffer pad 9 can be easily and smoothly installed in the assembly hole 301. The outer diameter of the rib 901 is consistent with the size of the push rod assembly hole 301, reducing the contact area during the press-fitting process and reducing the installation resistance.

[0028] The edges of the pad body and the edges of the socket 902 are both provided with arc chamfers, which facilitate assembly and reduce the precision requirements of the assembly equipment.

[0029] In order to apply the above push rod structure, the present invention also proposes a vehicle fuel tank cap or charging port cap actuator, such as Figure 5-9 As shown, it includes the above-mentioned push rod structure and a shell. The push rod structure is telescopically arranged in the shell, and the push rod structure maintains the extension tendency through the elastic member 10. A lock buckle 4 and a lock rail 5 are also provided in the shell. The middle part of the lock buckle 4 is hinged in the shell, one end is connected to the push rod structure, and the other end is slidably connected to the lock rail 5, wherein the lock rail 5 has two tracks, which are aligned with the lock buckle 4 at different positions and restrict the rotation of the lock buckle 4 through the rotation of the lock rail 5 itself. When the lock buckle 4 slides in the lock rail 5, the track aligned with the lock rail 5 is switched in sequence through the guide structure.

[0030] This manual locking structure and electric locking structure are existing technologies. Their purpose is to complete unlocking and locking by manually pressing the push rod structure. Specifically, when the push rod structure is pressed, it drives the lock buckle 4 to rotate, and one end of the lock buckle 4 slides in the lock rail 5 and is supported by the track of the lock rail 5. When the push rod structure is pressed again, the end of the lock buckle 4 enters the other track of the lock rail 5, so that the push rod is supported in different positions, thereby completing manual unlocking and locking.

[0031] An electric locking mechanism is also provided in the shell, which includes a two-way self-holding electromagnet 6 and a lock tongue rod 601, wherein a toggle piece is rotatably provided in the shell, and the lock tongue rod 601 fixes the lock rail 5 through the toggle piece, and one end of the lock tongue rod 601 extends into the travel path of the push rod structure. The electric locking mechanism is used to completely lock the push rod structure to prevent the push rod structure from being manually unlocked, completely restrict the lock rail 5 by the electromagnet, and hinder the return stroke of the push rod structure by the lock tongue rod 601 to prevent manual unlocking. Specifically, the two-way self-holding electromagnet 6 is usually composed of a lock tongue rod 601, a permanent magnet 603, two excitation coils 604 and an armature core 606, which is connected to the control unit 11 through a wire 602, wherein the armature core 606 is fixed on the lock tongue rod 601, and the permanent magnet 603 is installed in the middle position of the main body of the two-way self-holding electromagnet 6 to maintain the position of the armature core 606 when the power is off. The portion where the wire 602 passes through the housing 1 can be provided with a waterproof plug 7, and the telescopic surface of the push rod structure exposed outside the housing can be provided with a telescopic dust cover 8.

[0032] The shell is divided into an upper shell 1 and a lower shell 2, and the upper shell 1 and the lower shell 2 are connected and fixed by mechanical means.

[0033] One end of the lock tongue rod 601 is also provided with a safety rope 12 extending to the outside of the shell, which is used to pull the lock tongue rod 601 in the event of a power failure. A through hole 605 is opened at the other end of the lock tongue rod 601. The safety rope 12 is tied to the through hole 605 and extends to the outside of the shell. When the electromagnet fails and cannot work to unlock, the lock tongue rod 601 can be pulled manually by the safety rope 12 extending to the outside, thereby increasing safety.

[0034] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the scope of the present invention, all of which fall within the scope of protection of the present invention.

Claims

1. A push rod structure for a vehicle fuel tank cap or charging port cap actuator, used to open and close the actuator, characterized by: The invention comprises a push rod body (3) and a buffer pad (9), wherein the end of the push rod body (3) is provided with an assembly hole (301) for installing the buffer pad (9), wherein an inner lining rod (302) is provided in the assembly hole (301), and an insertion hole (902) is provided on the end face of the buffer pad (9), and the inner lining rod (302) is assembled with the insertion hole (902) to support the buffer pad (9) to prevent loosening, and the buffer pad (9) comprises a cap end and a pad body entering the assembly hole (301), wherein a rib (901) is provided on the side of the pad body.

2. The push rod structure of a vehicle fuel tank cap or charging port cap actuator according to claim 1, characterized in that: The edges of the pad body and the edges of the insertion hole (902) are both provided with arc chamfers.

3. A vehicle fuel tank cap or charging port cap actuator, characterized by: It includes a push rod structure as described in any one of claims 1-2, and also includes a shell, the push rod structure is telescopically arranged in the shell, the push rod structure maintains the extension tendency through the elastic member (10), and a lock buckle (4) and a lock rail (5) are also provided in the shell, the middle part of the lock buckle (4) is hinged in the shell, one end is connected to the push rod structure, and the other end is slidably connected to the lock rail (5), wherein the lock rail (5) has two tracks, which are rotated by the lock rail (5) itself to align the two tracks with the lock buckle (4) at different positions and limit the rotation of the lock buckle (4), and when the lock buckle (4) slides in the lock rail (5), the guide structure switches the track aligned with the lock rail (5) in sequence.

4. The vehicle fuel tank cap or charging port cap actuator according to claim 3, characterized in that: An electric locking mechanism is also provided in the housing, comprising a bidirectional self-holding electromagnet (6) and a lock tongue rod (601), wherein a toggle member is rotatably provided in the housing, the lock tongue rod (601) fixes the lock rail (5) via the toggle member, and one end of the lock tongue rod (601) extends into the travel path of the push rod structure to prevent the push rod structure from being manually unlocked.

5. The vehicle fuel tank cap or charging port cap actuator according to claim 4, characterized in that: The shell is divided into an upper shell (1) and a lower shell (2), and the upper shell (1) and the lower shell (2) are connected and fixed by mechanical means.

6. The vehicle fuel tank cap or charging port cap actuator according to claim 4, characterized in that: One end of the lock tongue rod (601) is also provided with a safety rope (12) extending to the outside of the housing, which is used to pull the lock tongue rod (601) in the event of a power failure.

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