A door inwards turning handle

Abstract

The utility model discloses a kind of car door inwards turning handle, including handle base, handle groove being provided on it towards car door surface;Handle body, with the closing position closed in handle groove, the opening position being retracted into operating space, and the unlocking position being retracted relative to opening position, the handle body is in opening position and unlocking position and is exposed handle groove;Transmission assembly, including electric actuation's push block, and transmission gear in the rotating path of push block, the handle body line is equipped with with synchronous rotation intermediate gear, the intermediate gear and transmission gear keep engagement;The push block, transmission gear, intermediate gear sequentially constitute electric opening path, the handle body, intermediate gear, transmission gear sequentially constitute emergency opening path, the handle body is in emergency opening path and is retracted to opening position by external force actuation.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically to an inward-folding door handle. Background Technology

[0002] Currently, the embedded door lock opening and closing devices widely used in the automotive industry mostly rely on electric drive to achieve form switching. In their default state, they are seamlessly attached to the outer surface of the door, and only unfold outward to an operable position through mechanical displacement after being triggered by an electronic control command. Although this design optimizes the streamlined features of the vehicle body, its high dependence on electrical power supply means that it completely loses its unlocking ability in the event of a low-voltage power outage or electronic control failure, posing a significant safety hazard of occupants being unable to escape in emergency situations.

[0003] To address the aforementioned issues, existing technologies attempt to add a mechanical emergency unlocking structure to the embedded door lock opening and closing device. This allows occupants to physically force the unlocking mechanism in the event of a power outage. However, the emergency unlocking structure in existing technologies differs from the normal operation of the handle, typically requiring users to apply force in unconventional ways to perform emergency unlocking, such as pressing the side along the door's normal direction or twisting at a specific angle. Such unconventional operation methods can easily confuse users and increase the difficulty of emergency unlocking. Furthermore, users need to overcome the multi-stage friction transmission of the handle's internal transmission mechanism. In some transmission mechanisms equipped with worm gear self-locking structures, the requirements for the user's operating torque are even higher, making operation more difficult. At the same time, it is also necessary to ensure the smoothness of the handle's electric opening. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an inward flip handle for car doors.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a car door inward flip handle, characterized in that it comprises:

[0006] The handle base has a handle groove facing the surface of the door.

[0007] The handle body has a closed position closed in the handle groove, an open position retracted into the operating space, and an unlocked position retracted relative to the open position, wherein the handle body exposes the handle groove in the open and unlocked positions.

[0008] The transmission assembly includes an electrically actuated lever and a transmission gear located in the rotation path of the lever. The handle body is provided with an intermediate gear that rotates synchronously with it, and the intermediate gear is engaged with the transmission gear. The lever, transmission gear, and intermediate gear sequentially form an electrically open path, and the handle body, intermediate gear, and transmission gear sequentially form an emergency open path. In the emergency open path, the handle body is actuated by external force to retract to the open position.

[0009] Furthermore, the transmission gear is provided with a first arm extending toward the lever, the lever is provided with an abutting arc surface facing the first arm, the first arm is provided with a mating arc surface facing the abutting arc surface, the abutting arc surface and the mating arc surface are separated in the emergency opening path, the mating arc surface and the abutting arc surface have an actuation point in the electric opening path, the actuation point is set close to the rotation center of the lever in the closed position, and the actuation point slides along the abutting arc surface to an end away from the rotation center of the lever in the electric opening path, the mating arc surface is set away from the abutting arc surface in the emergency opening path, and the mating arc surface has a tendency to move toward the abutting arc surface.

[0010] Furthermore, the transmission assembly also includes a control lever located in the rotation path of the transmission gear, the control lever being connected to an unlocking device, and the transmission gear moving in the direction of abutting or actuating the control lever in any opening path.

[0011] Furthermore, the transmission gear is provided with a second arm extending toward the control lever, and the control lever is provided with a transmission arm arranged in the opening path of the second arm.

[0012] Furthermore, the transmission arm is provided with an unlocking arc surface, and the transmission gear is provided with a first contact surface and a second contact surface that constitute the second arm. The second contact surface is farther away from the center of the transmission gear than the first contact surface. The second arm and the unlocking arc surface have an unlocking point that abuts each other in the open position. The unlocking point moves from the first contact plane toward the second contact plane as the handle moves in the unlocking direction.

[0013] Furthermore, the lever and control lever are arranged on both radial sides of the transmission gear, and the transmission gear is provided with teeth located between the lever and control lever, the teeth meshing with the intermediate gear.

[0014] Furthermore, the transmission gear, handle body, and control lever are all connected to elastic members for providing movement toward the closed position.

[0015] Furthermore, the transmission gear is provided with a stop end face, which is located on the tooth boundary of the transmission gear. The handle base is provided with a first limiting protrusion that is opposite to the stop end face, and the first limiting protrusion abuts against the stop end face in the closed position.

[0016] Furthermore, the body of the transmission gear and the lever are axially spaced, the first arm extends on the axial end face of the transmission gear and has a projection overlap with the teeth of the transmission gear, the first arm and the lever overlap in the axial direction, and the ratio of the length L1 of the actuation point relative to the rotation center of the lever in the closed position to the length L2 of the actuation point relative to the rotation center of the lever in the open position satisfies: 0.35~0.4.

[0017] Furthermore, the handle base has an open back, and a back shell is fixedly connected to the back of the handle base, the back shell being on the handle base and enclosing the operating space.

[0018] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0019] This invention utilizes a series of sequentially spaced levers, transmission gears, and control levers arranged along the opening path, with the transmission gears always meshing with the intermediate gear. Users can choose to have the electric actuator output power to execute the electric opening path's power transmission chain, or directly push the handle inwards, causing the handle to drive the intermediate gear, which in turn drives the transmission gear to execute the emergency opening path's power transmission chain. When the control lever rotates to the open position, it can be further actuated to the unlock position to unlock the door. Furthermore, the spaced arrangement of the levers and transmission gears in the opening direction ensures that the levers lose power output from the electric actuator in the emergency opening path's power transmission chain, decoupling them from the transmission gears. This avoids the problems of resistance superposition and mechanical interference from multiple transmission components in existing technologies, significantly reducing the user's hand effort and ensuring the reliability of emergency operations. Even in confined spaces or special positions, emergency opening can be easily completed, greatly improving rescue efficiency in emergency situations.

[0020] In addition, the handle body is determined by the pivot to open inward toward the door, so that when the user performs the action of opening the door, the direction of the emergency opening path of the hand operation is consistent with the direction of the user's hand reaching into the handle groove. The operation is simple and the action path is clear and straightforward, which is not easy to cause confusion in operation, and avoids structural damage to the internal transmission components caused by the user's violent operation. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the back structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of this utility model after removing the handle base and back cover;

[0024] Figure 4 This is a schematic diagram of the transmission component and handle body of this utility model in the closed position;

[0025] Figure 5 This is a schematic diagram of the transmission component and handle body of this utility model in the open position;

[0026] Figure 6 This is a schematic diagram of the transmission component and handle body of this utility model in the closed position;

[0027] Figure 7 This is a schematic diagram of the structure of the inertial arm, micro switch, and drive arm of this utility model;

[0028] Figure 8 This is a schematic diagram of the structure of the attachment seat of this utility model;

[0029] Figure 9 This is a cross-sectional view of the handle body of this utility model in the closed position;

[0030] Figure 10 This is a cross-sectional view of the handle body of this utility model in the open position;

[0031] Figure 11 This is an exploded view of the inertial arm and drive arm of this utility model on the attachment seat;

[0032] Figure 12 This is an exploded view of the inertial arm and drive arm of this utility model.

[0033] Figure 13 This is an exploded view of the control lever, transmission gear, and shift block of this utility model on the sub-shell.

[0034] Figure 14 This is an exploded view of the control lever and transmission gear of this utility model;

[0035] Figure 15 This is a schematic diagram of the control lever and transmission gear of this utility model in the open position;

[0036] Figure 16 This is a schematic diagram of the control lever and transmission gear of this utility model in the unlocked position;

[0037] Figure 17 This is a schematic diagram of the toggle block and transmission gear of this utility model in the closed position;

[0038] Figure 18 This is a schematic diagram of the lever and transmission gear of this utility model in the open position;

[0039] In the diagram: 1. Handle base; 1.1. Handle groove; 1.2. Operating space; 1.3. Sub-shell; 1.31. First partition wall; 1.4. Transmission space; 1.5. Attachment seat; 1.51. Second partition wall; 1.52. Limiting seat; 1.53. Sixth slot; 1.6. Main shell; 1.7. Back shell; 1.8. Pull cable seat; 1.9. First limiting protrusion;

[0040] 2. Transmission assembly; 2.1 Electric actuator; 2.2 Pulley; 2.21 Abutting arc surface; 2.3 Transmission gear; 2.31 First arm; 2.32 Second arm; 2.33 Tooth surface; 2.34 First annular groove; 2.35 First slot; 2.36 First contact plane; 2.37 Second contact plane; 2.38 Mating arc surface; 2.39 Stop end face;

[0041] 2.4 Control lever; 2.41 Unlocking arm; 2.42 Transmission arm; 2.43 Second annular groove; 2.44 Third groove; 2.45 Unlocking cable; 2.46 Unlocking arc surface; 2.5 Intermediate gear;

[0042] 3. Handle body; 3.1. Rotating shaft; 3.2. Plate; 3.3. Rotating arm; 3.4. Bushing; 3.31. Fifth groove;

[0043] 4. Elastic components; 4.1. First torsion spring; 4.2. Second torsion spring; 4.3. Third torsion spring; 4.31. Torsion spring portion; 4.32. First abutment portion; 4.33. Second abutment portion; 4.4. Fourth torsion spring; 4.5. Fifth torsion spring;

[0044] 5. Drive arm; 5.1. Third arm; 5.2. Fourth arm; 5.3. Fourth annular groove; 5.31. Seventh groove opening;

[0045] 6. Micro switch; 6.1. Triggering part;

[0046] 7. Inertial arm; 7.1. Blocking part; 7.2. Hooking part; 7.3. Third annular groove; 7.31. Protruding edge;

[0047] 8. First bearing seat; 8.1. First annular protrusion; 8.2. Second groove;

[0048] 9. Second shaft seat; 9.1. Second annular protrusion; 9.2. Fourth groove;

[0049] 10. Third shaft seat; 10.1. Third annular protrusion; 10.2. Eighth groove.

[0050] 11. Actuation point; 12. Unlocking point; Detailed Implementation

[0051] 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.

[0052] It should be understood that although the terms upper, middle, lower, top, one end, etc., appear in this document to describe various elements, these elements are not limited by these terms. These terms are only used to distinguish the elements from each other for ease of understanding, and are not used to define any directional or sequential restrictions.

[0053] like Figure 1-10 As shown, a car door inward flip handle includes:

[0054] Handle base 1 is located on the inside of the door and is used to provide space for the handle body 3 to be accommodated and operated. The handle base 1 is provided with a handle groove 1.1 facing the surface of the door, and the handle base 1 defines the operating space 1.2 of the handle body 3. A transmission component 2 is also provided on one side of the operating space 1.2.

[0055] The handle body 3 has a closed position closed in the handle groove 1.1, an open position retracted into the operating space 1.2, and an unlocked position retracted relative to the open position. In the open and unlocked positions, the handle groove 1.1 is exposed. In the open position, the operating space 1.2 is open to the outside of the door through the handle groove 1.1, allowing the user's hand to reach into the operating space 1.2 and act further in the rotation direction of the handle body 3, so that the handle body 3 rotates to the unlocked position retracted further into the door. Of course, the handle body 3 can also rotate from the open position to the unlocked position through the transmission assembly 2. A pivot 3.1 is also provided between the handle body 3 and the handle base 1 to allow the handle body 3 to rotate between multiple positions. The pivot 3.1 is arranged along the length of the vehicle and can be implemented by a structure in which a metal shaft passes through the pivot arm 3.3 and the bushing 3.4 to transmit rotational torque and limit the rotation trajectory.

[0056] The transmission assembly 2 includes an electric actuator 2.1, a lever 2.2 disposed on the actuating end of the electric actuator 2.1, and a transmission gear 2.3 and a control lever 2.4 arranged sequentially at intervals from the lever 2.2. The electric actuator 2.1 is disposed in the handle base 1 and connected to the vehicle system to receive signals for opening and closing the handle body 3. The control lever 2.4 is connected to the unlocking device. Under normal conditions, the control lever 2.4 remains in the locked state of the door and rotates in the unlocking direction under the action of the transmission gear 2.3, thereby opening the unlocking device. An intermediate gear 2.5 is fixedly disposed at the end of the rotating shaft 3.1, so that the handle body 3, the rotating shaft 3.1 and the intermediate gear 2.5 rotate synchronously, and the intermediate gear 2.5 and the transmission gear 2.3 remain engaged.

[0057] The lever 2.2 and the control lever 2.4 are arranged on the radial sides of the transmission gear 2.3. The transmission gear 2.3 is provided with teeth located between the lever 2.2 and the control lever 2.4, and the teeth mesh with the intermediate gear 2.5.

[0058] The electric actuator 2.1, the toggle block 2.2, the transmission gear 2.3, and the intermediate gear 2.5 sequentially constitute the electric opening path. The handle body 3, the intermediate gear 2.5, and the transmission gear 2.3 sequentially constitute the emergency opening path. In the emergency opening path, the handle body 3 is actuated by external force to retract to the open position. In any opening path, the transmission gear 2.3 moves in the direction of abutting or actuating the control lever 2.4.

[0059] This embodiment uses a series of sequentially spaced levers 2.2, transmission gears 2.3, and control levers 2.4 along the opening path. Transmission gear 2.3 is always engaged with intermediate gear 2.5. Users can choose to have the electric actuator 2.1 output power to execute the electric opening path's power transmission chain, or directly push the handle 3 inwards. The handle 3 then drives the intermediate gear 2.5, which in turn drives the transmission gear 2.3, thus executing the emergency opening path's power transmission chain. When the control lever 2.4 rotates to the open position, it can further... Step to the unlock position to unlock the door. In addition, the toggle block 2.2 and the transmission gear 2.3 are spaced apart in the opening direction, so that in the power transmission chain of the emergency opening path, the toggle block 2.2 loses the power output of the electric actuator 2.1, realizing the decoupling of the toggle block 2.2 and the transmission gear 2.3. This avoids the problem of resistance superposition and mechanical interference of multiple transmission components in the prior art, significantly reduces the operating force of the user's hands, ensures the reliability of emergency operation, and can easily complete emergency opening even in confined spaces or special positions, greatly improving the rescue efficiency in emergency situations.

[0060] Preferably, the axes of the transmission gear 2.3, the intermediate gear 2.5, the control lever 2.4, and the toggle block 2.2 are all arranged parallel to the axis of the rotating shaft 3.1.

[0061] Furthermore, the transmission assembly 2 has an electric opening path powered by the electric actuator 2.1, and an emergency opening path actuated by external hand force, in which the user can push the handle body 3 to rotate in the opening direction toward the inside of the door.

[0062] In this invention, the transmission mechanism 2.2 and the transmission gear 2.3 are connected by abutting each other in the opening direction. In emergency situations such as power failure, the transmission gear 2.3 can receive external force from the handle body 3 and the intermediate gear 2.5, causing the transmission gear 2.3 to rotate relative to the transmission mechanism 2.2. At this time, the transmission gear 2.3 and the transmission mechanism 2.2 are decoupled in the opening path. During emergency opening, the user can directly drive the intermediate gear 2.5 by pushing the handle body 3 in the inward direction. Thanks to the structural optimization of the transmission component 2 in this invention, it is only necessary to overcome the meshing resistance between the transmission gear 2.3 and the intermediate gear 2.5, as well as the elastic restoring force between the transmission gear 2.3 and the handle body 3. This elastic restoring force is provided by the elastic member 4 set between the transmission gear 2.3 and the handle body 3, thereby effectively reducing the mechanical resistance during manual intervention, realizing two driving modes: electric opening and emergency opening, and facilitating user application of force while reducing safety hazards.

[0063] Based on this, the pivot 3.1 further defines the handle body 3 as an opening rotation path that retracts inward to the door. In both emergency opening and electric opening processes, a force is required to retract the handle body 3 inward to the door. The only difference is that in emergency unlocking, the user needs to push the handle body 3 inward to the door first. After pushing the handle body 3 into the operating space 1.2 of the handle base 1, the user only needs to further actuate the handle body 3, thereby forcing the transmission gear 2.3 to drive the control lever 2.4 to rotate, thus completing the door unlocking. This unlocking step is consistent with the operation direction after the handle body 3 is electrically opened to the open position. The operation is simple and the direction of the action path is clear and straightforward, which is not easy to cause confusion in operation, and avoids structural damage to the internal transmission components 2 caused by the user's violent operation.

[0064] Specifically, the handle body 3, the transmission gear 2.3 and the control lever 2.4 are all connected to elastic members 4 for providing a restoring force. The elastic members 4 are used to provide the restoring force for the handle body 3, the transmission gear 2.3 and the control lever 2.4 to return to the closed position after being actuated in the opening direction, as well as the holding force in the closed position, to ensure the stability of the handle body 3 during vehicle operation.

[0065] Reference Figure 4 and Figure 5 As shown, the outer diameter of the intermediate gear 2.5 is preferably smaller than that of the transmission gear 2.3, so that the transmission gear 2.3 can have incomplete teeth arranged on it;

[0066] As a further embodiment of the cooperation between the transmission gear 2.3 and the lever 2.2, the transmission gear 2.3 and the lever 2.2 are axially spaced. The transmission gear 2.3 is provided with a first arm 2.31 extending toward the lever 2.2. The first arm 2.31 extends outward from the transmission gear 2.3 and has a component extending axially on the end face of the transmission gear 2.3. The first arm 2.31 extends in the opening action path of the lever 2.2 and abuts against the lever 2.2. Specifically, the lever 2.2 is disposed on the back of the first arm 2.31 corresponding to the opening direction. The first arm 2.31 actuates the transmission gear 2.3 to rotate in the opening direction. In the emergency opening path, the transmission gear 2.3 disengages from the lever 2.2 and rotates. It should be noted that in the electric opening path, the electric actuator 2.1 drives the lever 2.2 to rotate, and the lever 2.2 acts as the driving element to actuate the first arm 2.31. Therefore, in the emergency opening path, when the electric actuator 2.1 is without power and cannot actuate the lever 2.2, the transmission gear 2.3 can still be driven to rotate by the handle body 3 and the intermediate gear 2.5, and the first arm 2.31 will not interfere with the lever 2.2 in the opening path.

[0067] The body of the transmission gear 2.3 and the lever 2.2 are spaced apart axially. The first arm 2.31 extends on the axial end face of the transmission gear 2.3 and has a projection overlap with the teeth of the transmission gear 2.3. The overlap of the first arm 2.31 and the lever 2.2 in the axial direction effectively reduces the volume occupied by the transmission gear 2.3 and the lever 2.2 in the transmission space 1.4.

[0068] Reference Figures 3 to 6 As shown, specifically, the lever 2.2 is connected to the actuating end of the electric actuator 2.1. On the side of the lever 2.2 facing the opening direction, there is an abutting arc surface 2.21. The abutting arc surface 2.21 is set facing the first arm 2.31. Correspondingly, the first arm 2.31 is provided with a mating arc surface facing the abutting arc surface 2.21.

[0069] Preferably, at least in the electrically open position of the handle body 3, the abutting arc surface 2.21 abuts against the end of the mating arc surface away from the axis of the transmission gear 2.3, thereby improving the smoothness of the electric unlocking action; in the emergency opening path, the abutting arc surface separates from the mating arc surface.

[0070] like Figure 17 and Figure 18As shown, there is an actuation point 11 in the electric opening path between the mating arc surface 2.38 and the abutting arc surface 2.21. The actuation point 11 is located close to the rotation center of the lever 2.2 in the closed position, and the actuation point 11 slides along the abutting arc surface 2.21 in the electric opening path to one end away from the rotation center of the lever 2.2. In this way, it is beneficial to provide smooth electric opening.

[0071] Furthermore, the mating arc surface 2.38 has a tendency to move toward the abutting arc surface 2.21. This tendency is powered by the elastic member 4 provided on the transmission gear 2.3. Its purpose is to ensure that the transmission gear 2.3 and the toggle block 2.2 remain engaged, reducing transmission jerks in the electric opening path. In addition, this tendency also provides automatic reset of the transmission gear 2.3.

[0072] Preferably, the ratio of the length L1 of the actuation point 11 relative to the rotation center of the toggle block 2.2 in the closed position to the length L2 of the actuation point 11 relative to the rotation center of the toggle block 2.2 in the open position satisfies the condition of 0.35~0.4. As an example, L1 is selected as 8mm and L2 is selected as 21mm.

[0073] This arrangement ensures that the lever arm between the lever 2.2 and the transmission gear 2.3 increases with the swing during the electric opening process, thereby ensuring the smoothness of opening the handle body 3.

[0074] As a further embodiment of the cooperation between the transmission gear 2.3 and the control lever 2.4, the transmission gear 2.3 is provided with a second arm 2.32 extending toward the control lever 2.4. The second arm 2.32 extends to the outside of the transmission gear 2.3 and extends into the unlocking action path of the control lever 2.4. The control lever 2.4 is provided with a transmission arm 2.42 arranged in the opening path of the second arm 2.32 and abutting against the control lever 2.4 for transmission. For the second arm 2.32, the unlocking device is triggered by the actuation of the second arm 2.32 in both the electric opening path and the emergency unlocking path, so that the power transmission of the electric and manual opening paths is continuous, forming a unidirectional unlocking power transmission.

[0075] Specifically, the first arm 2.31 and the second arm 2.32 are set at an angle, and the tooth surface 2.33 is located between the first arm 2.31 and the second arm 2.32.

[0076] Reference Figures 3 to 6As shown, in a further embodiment of the control lever 2.4, the control lever 2.4 has an unlocking arm 2.41 extending radially. Preferably, the extension length of the unlocking arm 2.41 is set to be greater than the extension length of the transmission arm 2.42. An unlocking cable 2.45 is connected to the end of the unlocking arm 2.41. By rotating the control lever 2.4 and the unlocking arm 2.41, the unlocking cable 2.45 is pulled to trigger the unlocking device. The transmission arm 2.42 has an abutment surface facing the second arm 2.32. In the electric and emergency opening paths, it is pressed by the second arm 2.32 of the transmission gear 2.3. The transmission arm 2.42 on the control lever 2.4 forces the control lever 2.4 to rotate in the unlocking direction. In the open position corresponding to the handle body 3, the second arm 2.32 can be positioned close to or against the transmission arm 2.42. For the emergency opening path, the remaining rotational stroke of the handle body 3 within the operating space 1.2 is sufficient to drive the second arm 2.32 to the unlock position of the control lever 2.4. For the electric opening path, the remaining rotational stroke of the toggle block 2.2 driven by the electric actuator 2.1 is sufficient to drive the second arm 2.32 to the unlock position of the control lever 2.4.

[0077] like Figure 15 and Figure 16 As shown, in a further embodiment of the cooperation between the second arm 2.32 and the transmission arm 2.42, the transmission arm 2.42 is provided with an unlocking arc surface 2.46, and the transmission gear 2.3 is provided with a first contact surface and a second contact surface constituting the second arm 2.32. The second contact surface is farther from the center of the transmission gear 2.3 than the first contact surface. The first contact surface 2.36 extends from near the center of the transmission gear 2.3 in a generally radial direction and is generally planar. The second contact surface 2.37 extends to one side of the first contact surface 2.36 and forms a generally perpendicular angle with the first contact surface 2.36, thus forming an inflection point. The second contact surface 2.37 is circumferential in the transmission gear 2.3. Furthermore, the corner can also be other angles, such as an obtuse angle. The second arm 2.32 and the unlocking arc surface 2.46 have an unlocking point 12 that abuts each other in the open position. The unlocking point 12 moves from the first contact plane 2.36 toward the second contact plane 2.37 as the handle body 3 moves in the unlocking direction. During the unlocking process, the unlocking point 12 is located on the first contact plane 2.36 and moves toward the inflection point. As the transmission gear 2.3 unlocks to the position, the unlocking point 12 crosses the inflection point and moves to the first contact plane 2.36. In this way, the unlocking point 12 gradually moves away from the center of the transmission gear 2.3, and the inflection point is located in the unlocking path, thereby providing the handle body 3 with a tactile feel for the unlocking process through the transmission gear 2.3.

[0078] In other embodiments, when the unlocking point 12 is switched to the second contact plane 2.37 and the unlocking arc surface 2.46, it is beneficial to keep the second contact plane 2.37 and the unlocking arc surface 2.46 in a mating state, so as to prevent the control lever 2.4 and the transmission gear 2.3 from returning to their original positions too quickly after the user releases their hand.

[0079] Reference Figures 3 to 6 As shown, as a further embodiment of the handle base 1, the handle base 1 includes a main housing 1.6, a secondary housing 1.3 extending on one side of the main housing 1.6, and an attachment seat 1.5 on the other side of the main housing 1.6. The secondary housing 1.3 and the attachment seat 1.5 extend on the main housing 1.6 about the length of the door. The main housing 1.6 and the secondary housing 1.3 are open towards the inside of the door. The handle body 3 pivot 3.1 passes through the main housing 1.6 and is mounted on the main housing 1.6. Both ends of the pivot 3.1 extend out of the secondary housing 1.3 and the attachment seat 1.5. An inertial lock is provided on the attachment seat 1.5.

[0080] from Figure 9 and Figure 10 As can be seen, furthermore, a back shell 1.7 is also connected to the main shell 1.6, and the back shell 1.7 and the main shell 1.6 define an operating space 1.2. The internal contour of the back shell 1.7 is at least larger than the contour trajectory of the handle body 3 from the closed position to the unlocked position.

[0081] Preferably, the inner contour of the back shell 1.7 is set to be arc-shaped and matches the contour trajectory of the handle body 3. The position of the pivot 3.1 is set close to the axis of the back shell 1.7, so that the operating space 1.2 further constrains the actuation path of the user's hand on the handle body 3, so that the outer surface of the handle body 3 always faces the outside of the operating space 1.2, improving the stability of the hand's action on the handle body 3 and preventing the hand from being inserted between the surface of the handle body 3 and the inner contour of the back shell 1.7, causing hand injury.

[0082] In this embodiment, the sub-shell 1.3 defines a transmission space 1.4 on one side of the main shell 1.6. The sub-shell 1.3 covers the transmission component 2 in the height direction, so that the transmission component 2 is accommodated in the transmission space 1.4. A first partition 1.31 is provided between the main shell 1.6 and the sub-shell 1.3. The first partition 1.31 separates the operating space 1.2 from the transmission space 1.4. One end of the rotating shaft 3.1 passes through the first partition 1.31 and extends into the transmission space 1.4, thereby realizing the transmission cooperation between the transmission component 2, the rotating shaft 3.1, and the handle body 3. Through the design of the independent transmission space 1.4, the moving areas of the transmission component 2 and the handle body 3 are isolated, reducing the risk of interference between mechanical parts, and facilitating independent maintenance or replacement of the transmission component 2.

[0083] As a further arrangement of the transmission assembly 2 in the transmission space 1.4, the transmission space 1.4 is preferably extended in the height direction of the door. The electric actuator 2.1, the lever 2.2, the transmission gear 2.3, and the control lever 2.4 are arranged sequentially upwards in the height direction. The electric actuator 2.1 is exposed in a vertical position, thereby forming mutually parallel rotation axes in the height direction: the rotation axis of the lever 2.2, the rotation axis of the transmission gear 2.3, and the rotation axis of the control lever 2.4. All of the above rotation axes are parallel to the rotating shaft 3.1. The intermediate gear 2.5 is provided with... Positioned between the control lever 2.4 and the toggle block 2.2, the above improvements achieve a reasonable isolation of the operating space 1.2 between the transmission component 2 and the handle body 3. This reduces the risk of interference between the transmission component and the handle body 3, and improves the compactness of the handle body 3 assembly. Compared with the limitations of existing flat-out and swing-out door handles that require force to be applied at a special angle at the end, the inward-flipping handle of this utility model, through the design of the axial rotating shaft 3.1, allows users to apply force at any position within the handle groove 1.1, making the operation direction more flexible. The emergency opening path is adapted to the force application habits of the handle body 3.

[0084] Specifically, a cable holder 1.8 for fixing the unlocking cable 2.45 is also provided on the sub-housing 1.3. The cable holder 1.8 extends on the sub-housing 1.3 about the thickness direction of the door, so that the unlocking cable 2.45 is arranged downward from the upper part of the transmission space 1.4 and spaced apart from the transmission component 2 in the thickness direction of the door. This arrangement further improves the structural compactness and integration of the handle base 1.

[0085] from Figure 4 and Figure 5 As can be seen from other embodiments, in order to further reduce the volume and space occupation of the transmission assembly 2, the projections of the transmission gear 2.3 and the control lever 2.4 in the height direction are at least partially overlapped, that is, the transmission gear 2.3 and the control lever 2.4 are axially overlapped, and the toggle block 2.2 and the first arm 2.31 are at least partially overlapped in the height direction of the door, thereby ensuring the transmission between the first arm 2.31 and the toggle block 2.2. The toggle block 2.2 and the electric actuator 2.1 are arranged sequentially in the axial direction of the transmission gear 2.3, thereby reducing the space occupation of the transmission assembly 2 in the height direction and optimizing the spatial distribution of the transmission path.

[0086] like Figure 4 and Figure 5As shown, as a further embodiment of the elastic member 4, the elastic member 4 includes a first torsion spring 4.1 disposed in the transmission gear 2.3, a second torsion spring 4.2 disposed in the control lever 2.4, and a third torsion spring 4.3 disposed between the rotating shaft 3.1 and the handle body 3. The elastic member 4 provides independent reset forces for the transmission gear 2.3, the handle body 3, and the control lever 2.4. Thanks to the synchronous rotation of the intermediate gear 2.5 and the handle body 3, and the fact that the intermediate gear 2.5 always maintains engagement with the transmission gear 2.3, the third torsion spring 4.3 also assists in the reset of the transmission gear 2.3 when the handle body 3 is actuated to perform a reset action. Similarly, the control lever 2.4 can also apply an auxiliary force to the transmission gear 2.3 with the help of the second torsion spring 4.2, and further act on the reset of the handle body 3, thereby improving the reset stability of the handle body 3 and the transmission assembly 2.

[0087] Among them, the elastic component 4 refers to a mechanical element that can store mechanical energy and generate restoring force when released. Specifically, it can be implemented by a helical torsion spring, which provides the restoring force through preload.

[0088] It should be noted that by setting an independent first torsion spring 4.1 inside the transmission gear 2.3, the reset action of the transmission gear 2.3 can be separated from the transmission of the lever 2.2, thus providing a relatively independent action path for the transmission gear 2.3 component. This avoids interference between the transmission gear 2.3 and the lever 2.2 in the emergency opening path, improving the reliability of the mechanism. That is, the lever 2.2 only outputs the opening actuation force for the transmission gear 2.3 in the electric opening path to realize the electric automatic opening of the handle body 3.

[0089] This utility model provides elastic components 4 on the handle body 3, control lever 2.4 and transmission gear 2.3, so that the handle body 3, transmission gear 2.3 and control lever 2.4 automatically reset after action, reducing the external force load required for manual operation. At the same time, the disengagement transmission design of the first arm 2.31 and the toggle block 2.2 avoids mechanical interference between the transmission gear 2.3 and the electric actuator 2.1 during the reset process.

[0090] In addition, this embodiment solves the problems of difficult component reset and excessive operating resistance during emergency operation by using elastic component 4, saving too many linkage transmissions. Through the synergistic effect of elastic component 4, multi-component linkage reset is achieved, ensuring that the handle can quickly return to the initial state after electric or manual operation, improving the smoothness of operation and system stability.

[0091] like Figure 13 and Figure 14As shown, as a further embodiment of the transmission gear 2.3 and the first torsion spring 4.1, a first annular groove 2.34 is provided inside the transmission gear 2.3, and a first slot 2.35 is opened on the first annular groove 2.34. The first torsion spring 4.1 is sleeved in the first annular groove 2.34, and one end of the first torsion spring 4.1 abuts in the first slot 2.35 to achieve contact with the transmission gear 2.3. A first bearing seat 8 is provided on the side wall of the handle base 1. The outer ring of the first bearing seat 8 is provided with a first annular protrusion 8.1 that matches the outer wall of the transmission gear 2.3. A second slot 8.2 is provided on the second annular protrusion 9.1, and the other end of the first torsion spring 4.1 abuts in the second slot 8.2, thereby achieving the snap-fit ​​between the other end of the first torsion spring 4.1 and the handle base 1.

[0092] The transmission gear 2.3 is provided with a stop end face 2.39, which is located on the tooth boundary of the transmission gear 2.3. The handle base 1 is provided with a first limiting protrusion 1.9 which is opposite to the stop end face 2.39. The first limiting protrusion 1.9 abuts against the stop end face in the closed position. When the first limiting protrusion 1.9 abuts against the tooth boundary, the transmission gear 2.3 is kept in the closed position. This arrangement effectively reduces the volume of the transmission gear 2.3. Based on the integration of multiple transmission parts on the transmission gear 2.3, it is convenient to install the transmission gear 2.3 in the handle base 1.

[0093] As a further embodiment of the control lever 2.4 and the second torsion spring 4.2, a second annular groove 2.43 is provided inside the control lever 2.4, and a third slot 2.44 is opened on the second annular groove 2.43. The second torsion spring 4.2 is sleeved in the second annular groove 2.43, and one end of the second torsion spring 4.2 abuts in the third slot 2.44 to achieve contact with the control lever 2.4. A second bearing seat 9 is provided on the side wall of the handle base 1. The outer ring of the second bearing seat 9 is provided with a second annular protrusion 9.1 that matches the outer wall of the control lever 2.4. A fourth slot 9.2 is provided on the second annular protrusion 9.1, and the other end of the second torsion spring 4.2 abuts in the fourth slot 9.2, thereby achieving the engagement of the other end of the second torsion spring 4.2 with the handle base 1.

[0094] like Figure 3 and Figure 6As shown, as a further embodiment of the handle body 3 and the third torsion spring 4.3, the handle body 3 includes a plate 3.2 that matches the handle groove 1.1, and rotating arms 3.3 and bushings 3.4 extending at both ends of the plate 3.2. The bushings 3.4 are arranged along the length of the vehicle and are used to support the rotating shaft 3.1 and provide support for the rotating components. The rotating shaft 3.1 is fixedly inserted into the rotating arms 3.3 and bushings 3.4 along the length of the vehicle, so that the rotating shaft 3.1, the handle body 3, and the intermediate gear 2.5 rotate synchronously. The integrated design of the bushings 3.4 and the rotating arms 3.3 simplifies the rotation fulcrum. In terms of structural complexity, the bushing 3.4 is also provided with a third torsion spring 4.3. The third torsion spring 4.3 includes a torsion spring portion 4.31 sleeved on the outer surface of the bushing 3.4, and a first abutting portion 4.32 connected between the opposite ends of the torsion spring portion 4.31. The torsion spring portion 4.31 is provided with a second abutting portion 4.33 away from the first abutting portion 4.32. The first abutting portion 4.32 abuts against the handle housing, and the second abutting portion 4.33 abuts against the rotating arm 3.3. The rotating arm 3.3 is provided with a fifth groove 3.31, and the second abutting portion 4.33 is engaged in the fifth groove 3.31.

[0095] When the user performs an emergency operation, the handle body 3 is rotated from the closed position to the open position by external force of the hand. The resistance of the third torsion spring 4.3 can prevent the handle body 3 from impacting the transmission component 2 due to inertia. When the external force is removed, the elastic restoring force causes the torsion spring 4.31 to return to its initial shape, driving the rotating arm 3.3 and the handle body 3 back to the closed position. During the opening and closing process, the intermediate gear 2.5 is always engaged with the transmission gear 2.3, and the elastic force of the third torsion spring 4.3 of the handle body 3 can maintain a smooth movement.

[0096] like Figure 7 and Figure 8 As shown, as a further embodiment of the inertial lock, a drive arm 5 is provided at the end of the rotating shaft 3.1 opposite to the intermediate gear 2.5. A micro switch 6 is provided on the opening path of the drive arm 5. The micro switch 6 is triggered by the drive arm 5 to output a vehicle unlock signal. The drive arm 5 rotates synchronously with the rotating shaft 3.1 to transmit the motion trajectory. An inertial arm 7 is provided between the micro switch 6 and the drive arm 5. The inertial arm 7 is provided with a blocking part 7.1. The inertial arm 7 rotates under the actuation of the vehicle's inertial force or collision impact force and interferes between the micro switch 6 and the drive arm 5, thereby preventing the drive arm 5 from triggering the micro switch 6 under the action of inertial force or impact force. Under abnormal working conditions, the inertial arm 7 cuts off the physical connection between the drive arm 5 and the micro switch 6. At the same time, the drive arm 5 achieves synchronous rotation with the handle body 3 through the rotating shaft 3.1, thereby further preventing the handle body 3 from retracting under the action of inertial force or impact force.

[0097] Reference Figure 11 and Figure 12As shown, further, the inertial arm 7 is also connected to a fourth torsion spring 4.4 and a third annular groove 7.3 for inserting the fourth torsion spring 4.4. The third annular groove 7.3 is provided with a protruding edge 7.31 for one end of the fourth torsion spring 4.4 to abut. The outer wall of the attachment seat 1.5 is provided with a sixth slot 1.53 for inserting the other end of the fourth torsion spring 4.4.

[0098] Furthermore, a fourth annular groove 5.3 is provided inside the drive arm 5, and a seventh slot 5.31 is opened on the fourth annular groove 5.3. The fifth torsion spring 4.5 is sleeved in the fourth annular groove 5.3, and one end of the fifth torsion spring 4.5 abuts in the seventh slot 5.31 to achieve contact with the drive arm 5. The handle base 1 is provided with a third bearing 10 on the side wall corresponding to the attachment seat 1.5. The outer ring of the third bearing 10 is provided with a third annular protrusion 10.1 that matches the outer wall of the drive arm 5. An eighth slot 10.2 is provided on the third annular protrusion 10.1. The other end of the fifth torsion spring 4.5 abuts in the eighth slot 10.2, thereby achieving the engagement of the other end of the fifth torsion spring 4.5 with the handle base 1.

[0099] Under normal operating conditions, the inertial arm 7 moves away from the drive arm 5 under the action of the fourth torsion spring 4.4 to retain the normal vehicle unlocking function. When the rotating shaft 3.1 drives the drive arm 5 to rotate to a preset angle, the drive arm 5 contacts the trigger end of the micro switch 6, causing the vehicle system to generate an unlocking signal.

[0100] In emergency operations or when the vehicle is impacted by external forces, the inertial arm 7 rotates around its axis 3.1 under the action of inertial force and impact force, causing the blocking part 7.1 of the inertial arm 7 to insert into the gap between the drive arm 5 and the micro switch 6. At this time, the rotation path of the drive arm 5 is restricted, and the micro switch 6 cannot be directly triggered, thereby avoiding false triggering or signal interference. Furthermore, when the external force is removed, the inertial arm 7 automatically returns to its initial position through the fourth torsion spring 4.4, restoring the direct linkage between the drive arm 5 and the micro switch 6.

[0101] Specifically, the inertial arm 7 is axially offset from the drive arm 5. The drive arm 5 is equipped with a third arm 5.1 opposite to the micro switch 6, and a fourth arm 5.2 extending axially from the third arm 5.1. The fourth arm 5.2 is opposite to the inertial arm 7. The axial offset means that the inertial arm 7 and the drive arm 5 have a non-coplanar positional relationship in the extension direction of the rotating shaft 3.1, so that the inertial arm 7 does not interfere with the opening action trajectory of the third arm 5.1. The fourth arm 5.2 extends axially into the vertical area where the inertial arm 7 is located, so that when the inertial arm 7 is forced to rotate under abnormal conditions, it abuts against the fourth arm 5.2, thereby preventing the vehicle system from being accidentally unlocked.

[0102] Specifically, when the door is normally closed, the third arm 5.1 of the drive arm 5 maintains a distance from the micro switch 6, and the fourth arm 5.2 is not in contact with the inertial arm 7. When the electric actuator 2.1 drives the rotating shaft 3.1 to rotate, the third arm 5.1 of the drive arm 5 rotates along a preset trajectory until it contacts and triggers the micro switch 6. When the vehicle collides and generates inertial force, the inertial arm 7 is subjected to external force and rotates around its axis. Its end inserts between the fourth arm 5.2 and the micro switch 6, preventing the third arm 5.1 from contacting the micro switch 6.

[0103] In this embodiment, the purpose of setting the inertial arm 7 is to further improve the safety of the handle body 3, so as to play a safety compensation role when the door receives abnormal impact force and inertial force, based on adjusting the holding force of the transmission component 2 in the closed state.

[0104] from Figure 2 and Figure 8 As can be seen, the attachment seat 1.5 is located on the side of the handle base 1 away from the transmission component 2. The handle base 1 has a second partition 1.51 that is separated from the attachment seat 1.5. The first partition 1.31 and the second partition 1.51 form the two side boundaries of the operating space 1.2. The micro switch 6 is housed in the attachment seat 1.5, and the contact part of the micro switch 6 is exposed. The drive arm 5 is located on the lower side of the attachment seat 1.5, and the third arm 5.1 on the drive arm 5 is arranged opposite to the contact part. This arrangement protects the micro switch 6. In addition, the attachment seat 1.5 is also provided with a limiting seat 1.52 that cooperates with the inertial arm 7. The inertial arm 7 is provided with a hook part 7.2 facing the limiting seat 1.52. Under normal conditions, the elastic force of the fourth torsion spring 4.4 holds the inertial arm 7 on the attachment seat 1.5. At this time, the hook part 7.2 abuts against the limiting seat 1.52.

[0105] With the handle body 3 in the closed position, the handle groove 1.1 and the operating space 1.2 are closed, and the plate 3.2 of the handle body 3 is closed in the handle groove 1.1 of the handle base 1. At this time, the first arm 2.31 of the transmission gear 2.3 remains in contact with the lever 2.2 on the back in the opening direction, but the electric actuator 2.1 does not apply driving force to the lever 2.2; there is a gap between the second arm 2.32 of the transmission gear 2.3 and the transmission arm 2.42 of the control lever 2.4, and the intermediate gear 2.5 remains engaged with the transmission gear 2.3, but no phase collision occurs. During rotation, the first torsion spring 4.1, the second torsion spring 4.2, and the third torsion spring 4.3 are all in a pre-tensioned state, providing holding force for the transmission gear 2.3, the control lever 2.4, and the handle body 3; the toggle block 2.2 of the electric actuator 2.1 is in the initial angle, and its abutting arc surface 2.21 abuts against the far end of the mating arc surface of the first arm 2.31; the inertial arm 7 moves away from the drive arm 5 under the action of the fourth torsion spring 4.4 and is limited on the attachment seat 1.5; the third arm 5.1 of the drive arm 5 is spaced apart from the micro switch 6, and the fourth arm 5.2 has no contact with the inertial arm 7.

[0106] In the electric opening path, after receiving the unlocking signal, the electric actuator 2.1 drives the toggle block 2.2 to rotate in the opening direction. The abutting arc surface 2.21 of the toggle block 2.2 abuts against and pushes the back of the first arm 2.31 in the electric opening path, forcing the transmission gear 2.3 to rotate. The transmission gear 2.3 drives the intermediate gear 2.5 to rotate through the tooth surface 2.33, thereby driving the rotating shaft 3.1 and the handle body 3 to flip inward and retract into the operating space 1.2 until the plate body 3.2 is completely disengaged from the handle groove 1.1.

[0107] As the transmission gear 2.3 continues to rotate, its second arm 2.32 presses against the transmission arm 2.42 of the control lever 2.4, forcing the control lever 2.4 to rotate. The unlocking arm 2.41 of the control lever 2.4 pulls the unlocking cable 2.45, triggering the unlocking device. At this time, the rotating shaft 3.1 drives the drive arm 5 to rotate, and the third arm 5.1 contacts and triggers the micro switch 6, sending an unlocking completion signal back to the vehicle system.

[0108] The power to continue rotating the transmission gear 2.3 can be provided by the electric actuator 2.1 or by the user's hand-actuated handle body 3.

[0109] In the power-off state, the user presses the plate 3.2 of the handle body 3 from the outside of the car door, applying a pushing force towards the inside of the door; the handle body 3 drives the rotating shaft 3.1 and the intermediate gear 2.5 to rotate, forcing the transmission gear 2.3 to rotate synchronously. When the transmission gear 2.3 rotates, the first arm 2.31 slides away from the stationary abutment arc surface 2.21 of the lever 2.2, transmitting hand power only through the intermediate gear 2.5, avoiding the mechanical resistance of the electric actuator 2.1. When the handle body 3 rotates to the open position, the second arm 2.32 of the transmission gear 2.3 contacts or approaches the control lever 2.4. The transmission arm 2.42 continues to apply a pushing force to the handle body 3 within the operating space 1.2. The second arm 2.32 pushes the control lever 2.4 to rotate, and the unlocking arm 2.41 mechanically unlocks the car door through the unlocking cable 2.45. After the user's external force is removed, the third torsion spring 4.3 drives the handle body 3 to reset. The transmission gear 2.3 rotates under the action of the first torsion spring 4.1. The second arm 2.32 separates from the transmission arm 2.42, and the control lever 2.4 resets and locks the car door under the action of the second torsion spring 4.2. The first arm 2.31 disengages from the toggle block 2.2 in the return closing path.

[0110] It is foreseeable that the inward-flipping handle of this utility model solves the problem of excessive resistance in emergency operation of existing inward-flipping door handles. Unlocking can be completed with just one push when the power is off. The operation path is intuitive and does not require special angle force. At the same time, it retains the independence of electric drive and manual operation and avoids structural interference between the two modes.

[0111] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A car door inward-folding handle, characterized in that, include: A handle base (1) is provided with a handle groove (1.1) facing the surface of the door; The handle body (3) has a closed position closed in the handle groove (1.1), an open position retracted into the operating space (1.2), and an unlocked position retracted relative to the open position, wherein the handle body (3) exposes the handle groove (1.1) in the open position and the unlocked position. The transmission assembly (2) includes an electrically actuated lever (2.2) and a transmission gear (2.3) located in the rotation path of the lever (2.2). The handle body (3) is provided with an intermediate gear (2.5) that rotates synchronously with it. The intermediate gear (2.5) and the transmission gear (2.3) are engaged. The lever (2.2), the transmission gear (2.3), and the intermediate gear (2.5) sequentially form an electrically open path. The handle body (3), the intermediate gear (2.5), and the transmission gear (2.3) sequentially form an emergency open path. The handle body (3) is actuated by external force in the emergency open path and retracts to the open position.

2. The inward-opening door handle according to claim 1, characterized in that: The transmission gear (2.3) is provided with a first arm (2.31) extending toward the lever (2.2), the lever (2.2) is provided with an abutting arc surface (2.21) facing the first arm (2.31), the first arm (2.31) is provided with a mating arc surface (2.38) facing the abutting arc surface (2.21), and the mating arc surface (2.38) and the abutting arc surface (2.21) have an actuation point (11) in the electric opening path. The actuation point (11) is located near the rotation center of the lever (2.2) in the closed position, and the actuation point (11) slides along the abutment arc surface (2.21) in the electric opening path to one end away from the rotation center of the lever (2.2). The abutment arc surface (2.21) and the mating arc surface (2.38) separate in the emergency opening path, and the mating arc surface (2.38) has a tendency to move towards the abutment arc surface (2.21).

3. The inward-opening door handle according to claim 1, characterized in that: The transmission assembly (2) further includes a control lever (2.4) located in the rotation path of the transmission gear (2.3), the control lever (2.4) being connected to an unlocking device, and the transmission gear (2.3) moving in any opening path toward abutting or actuating the control lever (2.4).

4. A door inward-opening handle according to claim 3, characterized in that: The transmission gear (2.3) is provided with a second arm (2.32) extending toward the control lever (2.4), and the control lever (2.4) is provided with a transmission arm (2.42) arranged in the opening path of the second arm (2.32).

5. A door inward-opening handle according to claim 4, characterized in that: The transmission arm (2.42) is provided with an unlocking arc surface (2.46), and the transmission gear (2.3) is provided with a first contact surface and a second contact surface that constitute the second arm (2.32). The second contact surface is farther away from the center of the transmission gear (2.3) than the first contact surface. The second arm (2.32) and the unlocking arc surface (2.46) have an unlocking point (12) that abuts each other in the open position. The unlocking point (12) moves from the first contact plane (2.36) toward the second contact plane (2.37) as the handle body (3) moves in the unlocking direction.

6. A door inward-opening handle according to claim 3, characterized in that: The paddle (2.2) and control lever (2.4) are arranged on the radial sides of the transmission gear (2.3). The transmission gear (2.3) is provided with teeth located between the paddle (2.2) and control lever (2.4), and the teeth mesh with the intermediate gear (2.5).

7. A door inward-folding handle according to claim 3, characterized in that: The transmission gear (2.3), handle body (3), and control lever (2.4) are all connected to elastic members (4) for providing movement toward the closed position.

8. A door inward-opening handle according to claim 1, characterized in that: The transmission gear is provided with a stop end face (2.39), which is located on the tooth boundary of the transmission gear. The handle base is provided with a first limiting protrusion (1.9) that is opposite to the stop end face. The first limiting protrusion (1.9) abuts against the stop end face in the closed position.

9. A door inward-opening handle according to claim 2, characterized in that: The body of the transmission gear (2.3) and the lever (2.2) are axially spaced. The first arm (2.31) extends on the axial end face of the transmission gear (2.3) and has a projected overlap with the teeth of the transmission gear (2.3). The first arm (2.31) and the lever (2.2) overlap in the axial direction. The ratio of the length L1 of the actuation point (11) in the closed position to the rotation center of the lever (2.2) and the length L2 of the actuation point (11) in the open position to the rotation center of the lever (2.2) satisfies: 0.35~0.

4.

10. A door inward-opening handle according to claim 1, characterized in that: The handle base (1) has an open back and a back shell (1.7) is fixedly connected to the back of the handle base (1). The back shell (1.7) is on the handle base (1) and closes the operating space (1.2).

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