Quick opening mechanism for electric vehicle door handle

Abstract

The utility model relates to the technical field of automobile parts, in particular to an electric vehicle door handle quick opening mechanism which comprises an electric vehicle door body, a base is arranged on the outer side of the electric vehicle door body, a door handle body and a lock key assembly are arranged on the inner side of the base, and the lock key assembly is used for unlocking or locking the door handle body. According to the door handle body, the first handle and the second handle are detachably connected through the fastening bolt through the separable handle design, so that an operable mechanical emergency channel is provided for rescue workers when electric control completely fails, and the problem that the door handle is locked due to complete power failure caused by an accident or power shortage of a vehicle is solved; when the lock key assembly is in a normal power-on locking state, the electromagnet is powered on, generates magnetic force and attracts the iron core on the lock key, so that the lock key overcomes the tension of the spring to rotate around the hinge point, and the bent part of the lock key is inserted into the lock groove of the second handle, so that the whole door handle body is mechanically locked at the folding position.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically to a quick-opening mechanism for electric vehicle door handles. Background Technology

[0002] Electric vehicles and high-end gasoline vehicles commonly use hidden door handles to reduce wind resistance and improve aesthetics. Common hidden door handles will automatically pop out or require the user to press slightly to pop out when the user approaches with a smart key, providing the user with a handle.

[0003] In cases of severe collisions (which may cause the system to automatically shut off) or when the vehicle battery is depleted (12V low-voltage battery is discharged), the electronically controlled ejection function of the door handle will fail. In such cases, the purely electric door handle cannot eject and remains trapped inside the door panel. This poses a significant obstacle to rescue personnel outside the vehicle (such as firefighters and medical personnel), as they cannot quickly open the door to rescue the occupants inside, creating a safety hazard. Therefore, a fast-opening mechanism for electric vehicle door handles is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a quick-opening mechanism for tram door handles to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a tram door handle quick-opening mechanism, comprising a tram door body, a base provided on the outer side of the tram door body, and a door handle body and a lock key assembly provided on the inner side of the base, wherein the lock key assembly is used to unlock or lock the door handle body.

[0006] The door handle body includes a first handle, a connecting shaft, a torsion spring, a second handle, and a fastening bolt;

[0007] The first handle and the second handle are detachably connected by the fastening bolt, and the torsion spring in a twisted state is used to drive the first handle and the second handle to rotate and reset around the connecting shaft.

[0008] Preferably, the connecting shaft is formed at both ends of the first handle and is rotatably connected to the inner side of the base.

[0009] Preferably, the two ends of the torsion spring are respectively engaged with the base and the first handle, and the tightened fastening bolt is used to connect and install the first handle and the second handle.

[0010] Preferably, the loosened fastening bolt is used to separate the first handle from the second handle, and to allow the first handle to be used alone in an emergency.

[0011] Preferably, the locking key assembly includes a cavity, an electromagnet, a spring, a locking key, an iron core, and a locking groove;

[0012] The cavity is formed in the inner cavity of the base, the electromagnet is fixedly installed on the inner side of the cavity, the spring is sleeved on the outer side of the electromagnet, the center of the locking key is hinged to the inner wall of the cavity, the iron core is set on one side of the locking key, and the locking groove is opened in the inside of the second handle.

[0013] Preferably, the two ends of the spring are fixedly connected to the locking key and the cavity respectively, and the spring in the extended state is used to assist the locking key in rotating.

[0014] Preferably, the output end of the electromagnet when energized is used to magnetically attract the iron core, and the electromagnet when de-energized is used to release the attraction force on the iron core.

[0015] Preferably, the locking groove is used to allow the bent portion of the locking key to be inserted into it, and the locking key and locking groove in the engaged state are used to lock the positions of the first handle and the second handle.

[0016] Compared with the prior art, the beneficial effects of this utility model are: the door handle body, through the detachable handle design, the first handle and the second handle are detachably connected by fastening bolts, thus providing rescuers with an operable mechanical emergency passage when the electronic control fails completely, avoiding the problem of the door handle locking after the vehicle is completely powered off due to an accident or power failure.

[0017] In the normal energized locked state, the electromagnet is energized, generating magnetic force that attracts the iron core on the key. This causes the key to rotate around the hinge point, overcoming the spring's tension. The bent part of the key inserts into the lock groove of the second handle, mechanically locking the entire door handle body in the retracted position. At this time, the torsion spring is in a torsion-stored energy state. When the door is normally energized to unlock and pop out, the controller de-energizes the electromagnet. After the magnetic force disappears, the spring in the reset state pushes the key to rotate in the opposite direction around the hinge point, causing its bent part to be pulled out of the lock groove of the second handle, thus unlocking the door. The user can then pull the handle to open the door. This structure improves rescue efficiency and reduces safety hazards. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of the present utility model;

[0019] Figure 2 This is a schematic diagram of the door handle body structure of this utility model;

[0020] Figure 3 This utility model Figure 2 A schematic diagram of structure A in the diagram;

[0021] Figure 4 This is a schematic diagram of the locking key assembly structure of this utility model.

[0022] In the diagram: 1. Tram door body; 2. Base; 3. Door handle body; 301. First handle; 302. Connecting shaft; 303. Torsion spring; 304. Second handle; 305. Fastening bolt; 4. Locking key assembly; 401. Cavity; 402. Electromagnet; 403. Spring; 404. Locking key; 405. Iron core; 406. Lock groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-4 This utility model provides a technical solution for a quick-opening mechanism for a tram door handle: a quick-opening mechanism for a tram door handle includes a tram door body 1, a base 2 is provided on the outer side of the tram door body 1, and a door handle body 3 and a locking key assembly 4 are provided on the inner side of the base 2, and the locking key assembly 4 is used to unlock or lock the door handle body 3.

[0025] The door handle body 3 includes a first handle 301, a connecting shaft 302, a torsion spring 303, a second handle 304, and a fastening bolt 305;

[0026] The first handle 301 and the second handle 304 are detachably connected by a fastening bolt 305. The torsion spring 303 in a twisted state is used to drive the first handle 301 and the second handle 304 to rotate and reset around the connecting shaft 302.

[0027] Please refer to this carefully. Figure 2 The connecting shaft 302 is formed at both ends of the first handle 301 and is rotatably connected to the inner side of the base 2.

[0028] In this embodiment: when the torsion spring 303 is in a pre-twisted state (stores elastic potential energy), its restoring force will drive the first handle 301 and the second handle. 304） Rotate outward around the connecting shaft 302 to automatically pop the door handle into a usable position.

[0029] Please refer to this carefully. Figure 2 The two ends of the torsion spring 303 are respectively engaged with the base 2 and the first handle 301, and the tightened fastening bolt 305 is used to connect and install the first handle 301 and the second handle 304.

[0030] In this embodiment: In the extreme case of electromagnet 402 malfunction, the fastening bolt 305 is located and loosened. After loosening the fastening bolt 305, the second handle 304 can be removed, and the second handle 304 is completely separated from the first handle 301.

[0031] Please refer to this carefully. Figure 4 The loosened fastening bolt 305 is used to separate the first handle 301 from the second handle 304, and is used for the first handle 301 to be used alone in an emergency.

[0032] In this embodiment, the first handle 301 and the second handle 304, connected by fastening bolts 305, not only ensure the integrity during normal use, but also provide rescuers with an operable mechanical emergency passage.

[0033] Please refer to this carefully. Figure 3 The locking key assembly 4 includes a cavity 401, an electromagnet 402, a spring 403, a locking key 404, an iron core 405, and a locking groove 406;

[0034] Cavity 401 is formed in the inner cavity of base 2. Electromagnet 402 is fixedly installed on the inner side of cavity 401. Spring 403 is sleeved on the outer side of electromagnet 402. Lock key 404 is hinged to the inner wall of cavity 401 at its center. Iron core 405 is set on one side of lock key 404. Lock groove 406 is opened in the inside of second handle 304.

[0035] In this embodiment: Under normal conditions, the electromagnet 402 is energized, attracting the iron core 405 and causing the locking key 404 to rotate clockwise, so that its bent part is inserted into the locking groove 406 of the second handle 304. The torsion spring 303 is pre-tightened by torsion, and the first handle 301 and the second handle 304 are locked. When unlocking normally, the electromagnet 402 is de-energized, and the spring 403 in the reset state pushes the locking key 404 to rotate counterclockwise, and the bent part of the locking key 404 is removed from the locking groove 406.

[0036] Please refer to this carefully. Figure 3 The two ends of the spring 403 are fixedly connected to the lock key 404 and the cavity 401 respectively, and the spring 403 in the extended state is used to assist the lock key 404 in rotating.

[0037] In this embodiment: when the electromagnet 402 is completely de-energized and the magnetic force disappears, the spring 403 in the reset state pushes the locking key 404 to rotate, causing its bent part to disengage from the locking groove 406, thereby releasing the position lock of the first handle 301 and the second handle 304.

[0038] Please refer to this carefully. Figure 3 When energized, the output end of electromagnet 402 is used to magnetically attract iron core 405, and when de-energized, electromagnet 402 is used to release the attraction force on iron core 405.

[0039] In this embodiment: after the controller drives the electromagnet 402 to be de-energized, the electromagnet 402 releases its attraction to the iron core 405, causing the bent part of the lock key 404 to disengage from the lock groove 406. At this time, the locking state of the door handle body 3 is released.

[0040] Please refer to this carefully. Figure 4 The locking groove 406 is used for the bent part of the locking key 404 to be inserted into it, and the locking key 404 and the locking groove 406 in the engaged state are used to lock the positions of the first handle 301 and the second handle 304.

[0041] In this embodiment: after the controller drives the electromagnet 402 to generate magnetic force, it attracts the iron core 405 and drives the locking key 404 to rotate around the hinge point, so that its bent part is inserted into the locking groove 406. The locking key 404 and the locking groove 406 in the locked state lock the positions of the first handle 301 and the second handle 304.

[0042] Working principle: When the vehicle is powered normally, the lock key assembly 4 is in working state. When the controller drives the electromagnet 402 to be energized, it generates magnetic force, attracts the iron core 405, and drives the lock key 404 to rotate around the hinge point, so that its bent part is inserted into the lock groove 406. The lock key 404 and the lock groove 406 lock the positions of the first handle 301 and the second handle 304. When the controller drives the electromagnet 402 to be de-energized, the electromagnet 402 releases the attraction force on the iron core 405, and drives the bent part of the lock key 404 to disengage from the lock groove 406. At this time, the locking state of the door handle body 3 is released. Since the torsion spring 303 is in a pre-twisted state (stores elastic potential energy), its restoring force will drive the first handle 301 and the second handle 304 to rotate outward around the connecting shaft 302, so that the door handle automatically pops out to the usable position.

[0043] When the vehicle loses power (such as after a collision when the system loses power or the battery is depleted), the electromagnet 402 loses power completely and the magnetic force disappears. The spring 403 in the reset state pushes the lock key 404 to rotate, causing its bent part to disengage from the lock groove 406, thus releasing the position lock of the first handle 301 and the second handle 304. Therefore, the electric vehicle door body 1 can be opened normally when the vehicle encounters a collision, system power loss or battery depletion.

[0044] When the vehicle loses power completely due to an accident or power failure, the electromagnet 402 loses power, and the lock key 404 should unlock under the action of the spring 403. However, there is a risk that it may not unlock due to reasons such as mechanism jamming. In this case, the fastening bolt 305 should be located and loosened. After loosening the fastening bolt 305, the second handle 304 can be removed and the second handle 304 is completely separated from the first handle 301. However, at this time, the first handle 301 is still rotatably connected to the base 2 through the connecting shaft 302, and the elastic force of the torsion spring 303 will help it remain usable. Rescue personnel can directly pull the first handle 301 to trigger the door lock to unlock through mechanical transmission and open the tram door body 1.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quick-opening mechanism for a tram door handle, comprising a tram door body (1), wherein a base (2) is provided on the outer side of the tram door body (1), characterized in that: The base (2) is provided with a door handle body (3) and a lock key assembly (4) on its inner side, and the lock key assembly (4) is used to unlock or lock the door handle body (3). The door handle body (3) includes a first handle (301), a connecting shaft (302), a torsion spring (303), a second handle (304), and a fastening bolt (305). The first handle (301) and the second handle (304) are detachably connected by the fastening bolt (305), and the torsion spring (303) in a twisted state is used to drive the first handle (301) and the second handle (304) to rotate and reset around the connecting shaft (302).

2. The tram door handle quick-opening mechanism according to claim 1, characterized in that: The connecting shaft (302) is formed at both ends of the first handle (301) and is rotatably connected to the inner side of the base (2).

3. The tram door handle quick-opening mechanism according to claim 1, characterized in that: The two ends of the torsion spring (303) are respectively engaged with the base (2) and the first handle (301), and the tightened fastening bolt (305) is used to connect and install the first handle (301) and the second handle (304).

4. The tram door handle quick-opening mechanism according to claim 1, characterized in that: The loosened fastening bolt (305) is used to separate the first handle (301) from the second handle (304) and to allow the first handle (301) to be used alone in an emergency.

5. A quick-opening mechanism for a tram door handle according to claim 1, characterized in that: The locking key assembly (4) includes a cavity (401), an electromagnet (402), a spring (403), a locking key (404), an iron core (405), and a locking groove (406). The cavity (401) is formed in the inner cavity of the base (2), the electromagnet (402) is fixedly installed on the inner side of the cavity (401), the spring (403) is sleeved on the outer side of the electromagnet (402), the center of the locking key (404) is hinged to the inner wall of the cavity (401), the iron core (405) is disposed on one side of the locking key (404), and the locking groove (406) is opened in the interior of the second handle (304).

6. A quick-opening mechanism for a tram door handle according to claim 5, characterized in that: The two ends of the spring (403) are fixedly connected to the lock key (404) and the cavity (401) respectively, and the spring (403) in the extended state is used to assist the lock key (404) in rotating.

7. A tram door handle quick-opening mechanism according to claim 5, characterized in that: When energized, the output end of the electromagnet (402) is used to magnetically attract the iron core (405), and when de-energized, the electromagnet (402) is used to release the attraction force on the iron core (405).

8. A quick-opening mechanism for a tram door handle according to claim 5, characterized in that: The locking groove (406) is used for the bent portion of the locking key (404) to be inserted into it, and the locking key (404) and the locking groove (406) in the engaged state are used to lock the positions of the first handle (301) and the second handle (304).

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