A handle automatic reset mechanism and a concealed handle

Abstract

A handle automatic reset mechanism and a concealed handle. The handle automatic reset mechanism has at least an initial state, a driving state, and a backpressure state, and includes an installation cavity; a push rod provided with a guide groove; an elastic reset member; a guide hook needle, one end of the guide hook needle is fixed to the installation cavity, and the other end slides in the guide groove; a reset rod, which is movably arranged in the installation cavity, the reset rod has a first linkage end and a second linkage end, the first linkage end is connected to the push rod, and the second linkage end is in transmission connection with the handle. The concealed handle includes a handle base; a handle body having at least an initial position state, a pre-unfolding position state, and an unlocking position state; and the above-mentioned handle automatic reset mechanism. The present invention provides a handle automatic reset mechanism dedicated to a concealed door handle, which replaces the existing torsion spring reset structure, has a reasonable and stable structure, reliable operation, strong anti-fatigue performance, and can maintain a good working state after long-term and multiple uses.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile parts, in particular to an automatic handle reset mechanism and a hidden handle. Background Art

[0002] As people's living standards improve, their dependence on automobiles becomes increasingly evident, and demands for the appearance and functionality of automotive components are also increasing. Automotive exterior handles are a crucial component of the door system. Traditional exterior handle assemblies primarily consist of the exterior handle grip, exterior handle cover, exterior handle bracket, exterior handle connecting rod, and door lock cylinder.

[0003] Most car door handles are exposed and protruding. This design challenge presents numerous limitations, as the handle's shape must match the vehicle's exterior to maintain a positive appearance. Furthermore, because the handle is exposed, both the inside and outside of the handle are easily contaminated, making it easy for the driver to dirty their hands when opening the door. Furthermore, the protruding handle not only detracts from the vehicle's exterior appearance but also creates a certain amount of wind resistance, increasing driving resistance and wind noise. To address this, many manufacturers have improved the handle structure, creating retractable, concealed handles. To address these issues, some manufacturers have introduced concealed exterior handles. Concealed exterior handles generally have three states: an initial, concealed state, a pre-deployed state, and a fully deployed state.

[0004] The reset structure of the handle portion of existing concealed handles is very simple. For example, patent document CN111827810A discloses a concealed exterior door handle assembly for automobiles, comprising a base, a handle, and a drive mechanism. One end of the handle rotates relative to the base about a first connecting axis to enable the handle to switch between a concealed position and an extended position relative to the base. The drive mechanism is configured to drive the handle from the concealed position to the extended position. The drive mechanism comprises an electromagnetic catapult and a connecting rod. The electromagnetic catapult comprises a catapult housing, a movable iron core, and an induction coil surrounding the movable iron core. The induction coil is energized and controlled by a vehicle control center. The connecting rod is connected to the base by rotation about a second connecting axis. One end of the connecting rod is transmission-connected to one end of the movable iron core, and the other end is transmission-connected to the handle. When the induction coil is energized, the movable iron core ejects outward along the length of the catapult housing and drives the connecting rod to rotate, which in turn propels the handle out of the exterior surface of the vehicle door. In which, the hidden automobile exterior door handle assembly also includes a handle reset elastic member, one end of the handle reset elastic member is connected to the base, and the other end of the handle reset elastic member is connected to the handle. When the induction coil is powered off, the handle is reset under the elastic force of the handle reset elastic member.

[0005] It can be seen that in the existing hidden vehicle door handles, in order to achieve the reset of the handle, a handle reset elastic member (torsion spring) is sleeved on the connecting shaft between the handle and the handle base. During use, the handle reset elastic member (torsion spring) is compressed, and after releasing the hand, the handle is reset by the elastic force accumulated by the handle reset elastic member (torsion spring). Such handles have at least the following deficiencies: First, the torsion spring is arranged on the vertical plane, and the handle moves in the horizontal direction, so the torsion spring and the handle are perpendicular to each other; if the torsion spring force is set small, the handle reset may be relatively slow or even unable to be reset in place; if the torsion spring force is set large, the handle resets too quickly and is even prone to collision damage. Second, after repeated use, the torsion spring itself is prone to product fatigue, resulting in poor reliability during the handle reset, being prone to failures and even unable to be used normally; Third, the hidden handle has at least an initial position state, a pre-deployment position state, and an unlocking position state. In the prior art, if the hidden handle is to be kept in the pre-deployment position state, the actuator component needs to continuously work to provide position support for the handle body, thus increasing the load on the actuator, and during use, the user may manually close the handle body in the reverse direction, which is prone to damage the actuator. Summary of the Invention

[0006] In order to overcome the above deficiencies of the prior art, the present invention provides a handle automatic reset mechanism and a hidden handle.

[0007] The technical solution adopted by the present invention to solve its technical problems is: A handle automatic reset mechanism, which at least has an initial state, a driving state, and a backpressure state, includes:

[0008] An installation cavity;

[0009] A push rod, which is slidably arranged in the installation cavity;

[0010] An elastic reset member, which acts on the push rod;

[0011] A guiding hook needle, a guiding groove is opened on the push rod, one end of the guiding hook needle is fixed to the installation cavity, and the other end is slidably arranged in the guiding groove and can move along the track of the guiding groove;

[0012] A reset rod, which is movably arranged in the installation cavity, the reset rod has a first linkage end and a second linkage end, the first linkage end is connected to the push rod, and the second linkage end is in transmission connection with the handle.

[0013] A further setting of the above technical solution is: The push rod has a push rod inner cavity, a driving groove communicating with the push rod inner cavity is opened on the push rod, a driving rib protrudes in the installation cavity, and the driving rib extends into the push rod inner cavity through the driving groove;

[0014] The elastic resetting member is arranged in the inner cavity of the push rod, and one end of the elastic resetting member abuts against the inner cavity wall of the push rod, and the other end can abut against the driving rib.

[0015] The further setting of the above technical solution is that: the guiding groove has a driving guiding section and a returning guiding section and is in a lying "person" shape, and the driving guiding section also has a holding position, and the end of the guiding hook needle can continuously be in the holding position;

[0016] When the end of the guiding hook needle is in the holding position, it corresponds to the initial state in which the handle automatic reset mechanism is located; when the end of the guiding hook needle is at the front end of the returning guiding section, it corresponds to the driving state in which the handle automatic reset mechanism is located; when the end of the guiding hook needle is at the rear end of the returning guiding section, it corresponds to the back pressure state in which the handle automatic reset mechanism is located.

[0017] The further setting of the above technical solution is that: the driving guiding section is gradually inclined downward from back to front, and there is a guiding ramp surface near the holding position of the driving guiding section; the returning guiding section is gradually inclined downward from front to back;

[0018] There is a first step arranged in the front-back direction at the intersection of the driving guiding section and the returning guiding section, and the side of the first step close to the driving guiding section is the high point;

[0019] There is a second step arranged in the up-down direction in the middle section of the returning guiding section, and the side of the second step close to the front end of the returning guiding section is the high point;

[0020] There is a third step arranged in the front-back direction at the lower end of the holding position, and the side of the third step close to the returning guiding section is the high point;

[0021] There is a fourth step arranged in the front-back direction at the upper end of the holding position, and the side of the fourth step close to the holding position is the high point.

[0022] The further setting of the above technical solution is that: the reset rod is rotatably arranged in the installation cavity, and the first linkage end and the second linkage end are respectively arranged on both sides of the rotation center of the reset rod.

[0023] The further setting of the above technical solution is that: an electric locking component for locking the push rod is also arranged in the installation cavity, and the electric locking component is in communication connection with the vehicle electronic control system.

[0024] The further setting of the above technical solution is that: the electric locking component sequentially includes a motor, a transmission component and a locking part, a locking groove is formed on the push rod, and the locking part can be inserted into the locking groove so that the locking part and the push rod form a limiting fit.

[0025] The above technical solution is further configured as follows: the transmission assembly includes an output gear, a non-standard ring gear and a transmission cam;

[0026] The output gear is sleeved on the output shaft of the motor, the non-standard gear ring is meshed with the output gear for transmission, and the transmission cam is connected to the output end of the non-standard gear ring;

[0027] The locking member is provided with a driven groove, the transmission cam is arranged in the driven groove, and the transmission cam abuts against the locking member to drive the locking member forward or backward.

[0028] The above technical solution is further configured as follows: a reset torsion spring is sleeved on the output end of the non-standard gear ring, and the other end of the reset torsion spring is fixedly connected to the locking member.

[0029] The present invention also provides a hidden handle, comprising:

[0030] a handle base, which is mounted in the vehicle body;

[0031] a handle body mounted in the handle base and having at least an initial position, a pre-deployed position, and an unlocked position;

[0032] It also includes the handle automatic reset mechanism as described above, the mounting cavity is formed in the handle base, and the handle body is transmission-connected to the second linkage end of the reset rod.

[0033] The working principle of the automatic reset mechanism of the handle in the present invention is: when in use (the handle body moves outward), the second linkage end is subjected to force to make the reset rod move, that is, the first linkage end drives the push rod to move along a predetermined trajectory (the cooperation between the guide hook and the guide groove), and the elastic reset part on the push rod is compressed while the push rod moves; after use (releasing the handle body), the second linkage end is no longer subjected to force and is released. At this time, the elastic reset part drives the push rod to reset together under the action of its own elastic force, and at the same time drives the reset rod to move to its original position.

[0034] The beneficial effects of the present invention are as follows: 1. It provides an automatic reset mechanism specifically for concealed door handles, replacing the existing flimsy and unreliable torsion spring reset structure. It features a rational and stable structure, reliable operation, and strong fatigue resistance, enabling it to maintain good working condition even after repeated use over long periods of time. 2. By utilizing a sideways "human"-shaped guide groove and a guide hook, an effective structure is formed in a smaller space, enabling the automatic reset mechanism to switch between the initial state, the driving state, and the back pressure state. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1It is an exploded view of the handle automatic reset mechanism in the present invention.

[0036] Figure 2 It is a schematic structural diagram of the handle automatic reset mechanism in the initial state.

[0037] Figure 3 It is Figure 2 A sectional view taken along the A-A direction in

[0038] Figure 4 It is an axonometric schematic diagram of the handle body in the hidden handle when it is in the initial position state.

[0039] Figure 5 It is a rear view of the handle body in the hidden handle when it is in the initial position state.

[0040] Figure 6 It is Figure 5 A sectional view taken along the B-B direction in

[0041] Figure 7 It is a schematic structural diagram of the handle automatic reset mechanism in the driving state.

[0042] Figure 8 It is Figure 7 A sectional view taken along the C-C direction in

[0043] Figure 9 It is an axonometric schematic diagram of the handle body in the hidden handle when it is in the pre-deployment position state.

[0044] Figure 10 It is a rear view of the handle body in the hidden handle when it is in the pre-deployment position state.

[0045] Figure 11 It is Figure 10 A sectional view taken along the D-D direction in

[0046] Figure 12 It is a schematic structural diagram of the handle automatic reset mechanism in the backpressure state.

[0047] Figure 13 It is Figure 12 A sectional view taken along the E-E direction in

[0048] Figure 14 It is an axonometric schematic diagram of the handle body in the hidden handle when it is in the unlocked position state.

[0049] Figure 15 It is a rear view of the handle body in the hidden handle when it is in the unlocked position state.

[0050] Figure 16 It is Figure 15 A sectional view taken along the F-F direction in

[0051] Figure 17 It is an enlarged schematic diagram of the guide groove.

[0052] Figure 18 It is a motion diagram of the guide hook switching from the initial state to the driving state.

[0053] Figure 19 It is a motion diagram of the guide hook switching from the driving state to the back pressure state.

[0054] Figure 20 It is a motion diagram of the guide hook switching from the back pressure state to the initial state. DETAILED DESCRIPTION

[0055] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0056] Reference Figures 1 to 20 , a handle automatic reset mechanism, having at least an initial state, a driving state and a back pressure state, including:

[0057] Mounting cavity 1;

[0058] A push rod 2 is slidably arranged in the mounting cavity 1;

[0059] an elastic reset member 3 acting on the push rod 2;

[0060] A guide hook 4 is provided on the push rod 2 with a guide groove 5. One end of the guide hook 4 is fixed to the mounting cavity 1, and the other end is slidably arranged in the guide groove 5 and can move along the track of the guide groove 5.

[0061] The reset rod 6 is movably arranged in the installation cavity 1. The reset rod 6 has a first linkage end 7 and a second linkage end 8. The first linkage end 7 is connected to the push rod 2, and the second linkage end 8 is transmission-connected to the handle.

[0062] The above content is the basic scheme of the automatic reset mechanism of the handle in the present invention. Its working principle when in use (the handle body moves outward) is: the second linkage end 8 is subjected to force to make the reset rod 6 active, that is, the push rod 2 is driven to move along a predetermined trajectory (the cooperation between the guide hook 4 and the guide groove 5) through the first linkage end 7. When the push rod 2 moves, the elastic reset part 3 on the push rod 2 is compressed; after use (releasing the handle body), the second linkage end 8 is no longer subjected to force and is released. At this time, the elastic reset part 3 drives the push rod 2 to reset together under the action of its own elastic force, and at the same time drives the reset rod 6 to move to its initial position.

[0063] The elastic resetting member 3 preferably adopts the form of a linear spring and has good stability. On the other hand, there are also various installation methods for the elastic resetting member 3. For example, it can be sleeved on the outer periphery of the push rod 2, etc. However, considering various factors such as the installation space, the degree of interference during use, and the long-term stability, the following preferred structural scheme is proposed in the present invention. Specifically, the push rod 2 has a push rod inner cavity 9, the elastic resetting member 3 is arranged in the push rod inner cavity 9, and one end of the elastic resetting member 3 abuts against the cavity wall of the push rod inner cavity 9, and the other end can abut against the driving rib 10. The elastic resetting member 3 is built into the push rod 2, so that the size after the two are assembled is the same as that of a single push rod 2, and it will not occupy too much space. On the other hand, the push rod inner cavity 9 plays a protective role for the elastic resetting member 3, which can prevent impurities from entering and interfering with the movement of the elastic resetting member 3, so as to ensure the normal use of the elastic resetting member 3 for a long time.

[0064] Furthermore, a driving groove 11 communicating with the push rod inner cavity 9 is formed on the push rod 2, a driving rib 10 protrudes in the installation cavity 1, and the driving rib 10 extends into the push rod inner cavity 9 through the driving groove 11. During the movement of the push rod 2, the positional relationship between the driving rib 10 and the elastic resetting member 3 changes and can compress or release the elastic resetting member 3.

[0065] In some embodiments of the present invention, the guiding groove 5 has a driving guiding section 12 and a returning guiding section 13 and is in the shape of a lying "person", and a holding position 14 is also provided in the driving guiding section 12, and the end of the guiding hook needle 4 can continuously stay in the holding position 14. When the guiding groove 5 adopts the above form, the situation during use is as follows: when the end of the guiding hook needle 4 is in the holding position 14, it corresponds to the initial state of the handle automatic reset mechanism; when the end of the guiding hook needle 4 is at the front end of the returning guiding section 13, it corresponds to the driving state of the handle automatic reset mechanism; when the end of the guiding hook needle 4 is at the rear end of the returning guiding section 13, it corresponds to the back pressure state of the handle automatic reset mechanism.

[0066] Specifically, in order to make the movement of the guiding hook needle 4 in the guiding groove 5 smoother and more regular, the driving guiding section 12 is gradually inclined downward from back to front, and a guiding slope surface 15 is provided near the holding position 14 of the driving guiding section 12; the returning guiding section 13 is gradually inclined downward from front to back. Among them, the inclination of the guiding slope surface 15 is greater than the inclination of the driving guiding section 12, so that the guiding hook needle 4 is more likely to move from the holding position 14 to the driving guiding section 12 under the driving force;

[0067] At the intersection of the driving and guiding section 12 and the return guiding section 13, there is a first step 26 arranged in the front-back direction, and the side of the first step 26 close to the driving and guiding section 12 is the high point; the setting of the first step 26 enables the guiding hook needle 4 to only move from the driving and guiding section 12 to the return guiding section 13 when moving at the position where the first step 26 is located.

[0068] In the middle section of the return guiding section 13, there is a second step 27 arranged in the up-down direction, and the side of the second step 27 close to the front end of the return guiding section 13 is the high point; the setting of the second step 27 enables the guiding hook needle 4 to only move from the front end of the return guiding section 13 to the rear end of the return guiding section 13 when moving at the position where the second step 27 is located.

[0069] At the lower end of the holding position 14, there is a third step 28 arranged in the front-back direction, and the side of the third step 28 close to the return guiding section 13 is the high point; the setting of the third step 28 enables the guiding hook needle 4 to only move from the return guiding section 13 to the holding position 14 when moving at the position where the third step 28 is located.

[0070] At the upper end of the holding position 14, there is a fourth step 29 arranged in the front-back direction, and the side of the fourth step 29 close to the holding position is the high point; the setting of the fourth step 29 enables the guiding hook needle 4 to only move from the holding position 14 to the driving and guiding section 12 when moving at the position where the fourth step 29 is located.

[0071] Above, the settings of the first step 26, the second step 27, the third step 28 and the fourth step 29 are all to enable the guiding hook needle 4 to move along a predetermined trajectory when moving in the guiding groove 5, and at the same time to realize the cycle of the guiding hook needle 4 among the holding position, the driving and guiding section 12 and the return guiding section 13.

[0072] The specific installation method of the reset rod 6 in the installation cavity 1 is as follows: the reset rod 6 is rotatably arranged in the installation cavity 1, and the first linkage end 7 and the second linkage end 8 are respectively arranged on both sides of the rotation center of the reset rod 6. When in use, when the second linkage end 8 moves forward, the first linkage end 7 will drive the push rod 2 to move backward; when the push rod 2 (elastic reset member 3) drives the first linkage end 7 to move forward, the second linkage end 8 will move backward.

[0073] In order to increase the safety performance and limit the movement of the handle main body or the handle automatic reset mechanism to prevent it from being accidentally opened, this embodiment provides a locking and limiting structure, specifically: an electric locking component for locking the push rod 2 is further provided in the installation cavity 1, and the electric locking component is communicatively connected to the vehicle electronic control system.

[0074] The above technical solution is further configured as follows: the electric locking assembly includes a motor 16, a transmission assembly, and a locking member 17 in sequence; the push rod 2 is provided with a locking groove 18, into which the locking member 17 can be inserted, so that the locking member 17 and the push rod 2 form a limited fit. The transmission assembly includes an output gear 19, a non-standard ring gear 20, and a transmission cam 21; the output gear 19 is sleeved on the output shaft of the motor 16, the non-standard ring gear 20 meshes with the output gear 19 for transmission, and the transmission cam 21 is connected to the output end of the non-standard ring gear 20; the locking member 17 is provided with a driven groove 22, in which the transmission cam 21 is disposed, and abuts against the locking member 17 to drive the locking member 17 forward or backward. The electric locking assembly mentioned in the above content uses many non-standard components, which makes the overall structure after assembly more compact, increases the safety of the mechanism, and has higher stability. It also reduces the friction and interference between the moving mechanisms, effectively reduces the impact force, and thus improves the overall service life, safety and comfort of the product.

[0075] The above technical solution is further configured as follows: a return torsion spring 23 is sleeved on the output end of the non-standard ring gear 20, and the other end of the return torsion spring 23 is fixedly connected to the locking member 17. When the handle automatic return mechanism returns from the back pressure state to the initial state, the elastic return force of the return torsion spring 23 can automatically push the locking member 17 toward the push rod 2, so that the locking member 17 automatically engages with the locking groove 18, realizing the automatic locking function.

[0076] The present invention also provides a hidden handle, comprising: a handle base 24, which is installed in the vehicle body; a handle body 25, which is installed in the handle base 24 and has at least an initial position state, a pre-expanded position state, and an unlocked position state; and also includes the handle automatic reset mechanism as described above, wherein the handle base 24 is formed with the mounting cavity 1, and the handle body 25 is transmission-connected to the second linkage end 8 of the reset rod 6.

[0077] The state correspondence between the hidden handle and the handle automatic reset mechanism in the present invention is: when the handle body 25 is in the initial position state, the corresponding handle automatic reset mechanism is in the initial state, and the handle body 25 is hidden in the car door; when the handle body 25 is in the pre-extended position state, the corresponding handle automatic reset mechanism is in the driving state, and the handle body 25 is slightly tilted relative to the car door to facilitate the user to hold and operate the handle body 25; when the handle body 25 is in the unlocked position state, the corresponding handle automatic reset mechanism is in the back pressure state, and the handle body 25 is greatly tilted relative to the car door, and the car door can be opened.

[0078] The above are only the preferred embodiments of the present invention, and do not impose any limitations on the present invention. Any simple modifications, changes, and equivalent structural changes made to the above embodiments based on the technical essence of the invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A handle automatic reset mechanism, having at least an initial state, a driving state and a back pressure state, characterized in that: include: Mounting cavity; a push rod slidably disposed in the mounting cavity; an elastic reset member acting on the push rod; A guide hook, wherein a guide groove is provided on the push rod, one end of the guide hook is fixed to the mounting cavity, and the other end is slidably arranged in the guide groove and can move along the track of the guide groove; A reset rod is movably disposed in the mounting cavity, the reset rod having a first linkage end and a second linkage end, the first linkage end being connected to the push rod, and the second linkage end being in transmission connection with the handle; The guide groove has a driving guide section and a return guide section and is in a sideways "human" shape, and the driving guide section also has a holding position, and the end of the guide hook can be continuously in the holding position; When the end of the guide hook is in the holding position, the handle automatic reset mechanism is in the initial state; when the end of the guide hook is at the front end of the return guide section, the handle automatic reset mechanism is in the driving state; when the end of the guide hook is at the rear end of the return guide section, the handle automatic reset mechanism is in the back pressure state; The driving guide section is gradually tilted downward from the back to the front, and the driving guide section has a guide slope surface near the holding position; the return guide section is gradually tilted downward from the front to the back; The intersection of the driving guide section and the return guide section has a first step arranged in the front-to-back direction, and the first step is at a high point close to the driving guide section. The middle section of the return guide section has a second step arranged in the up-down direction, and the second step is at a high point near the front end of the return guide section; A third step is provided at the lower end of the holding position along the front-to-back direction, and the third step is located at a high point on the side close to the return guide section; The upper end of the holding position is provided with a fourth step along the front-to-back direction, and the fourth step is located at a high point on a side close to the holding position.

2. The handle automatic reset mechanism according to claim 1, characterized in that: The push rod has a push rod inner cavity, a driving groove is formed on the push rod and communicates with the push rod inner cavity, a driving rib is protruded in the mounting cavity, and the driving rib extends into the push rod inner cavity through the driving groove; The elastic reset member is arranged in the inner cavity of the push rod, and one end of the elastic reset member abuts against the cavity wall of the inner cavity of the push rod, and the other end can abut against the driving rib.

3. The handle automatic reset mechanism according to claim 1, characterized in that: The reset rod is rotatably arranged in the installation cavity, and the first linkage end and the second linkage end are respectively arranged on both sides of the rotation center of the reset rod.

4. The handle automatic reset mechanism according to claim 1, characterized in that: An electric locking assembly for locking the push rod is also provided in the installation cavity, and the electric locking assembly is communicatively connected to the automobile electronic control system.

5. The handle automatic reset mechanism according to claim 4, characterized in that: The electric locking assembly includes a motor, a transmission assembly and a locking member in sequence. A locking groove is provided on the push rod, and the locking member can be inserted into the locking groove so that the locking member and the push rod form a limited fit.

6. The handle automatic reset mechanism according to claim 5, characterized in that: The transmission assembly includes an output gear, a non-standard gear ring and a transmission cam; The output gear is sleeved on the output shaft of the motor, the non-standard gear ring is meshed with the output gear for transmission, and the transmission cam is connected to the output end of the non-standard gear ring; The locking member is provided with a driven groove, the transmission cam is arranged in the driven groove, and the transmission cam abuts against the locking member to drive the locking member forward or backward.

7. The handle automatic reset mechanism according to claim 6, characterized in that: A reset torsion spring is sleeved on the output end of the non-standard gear ring, and the other end of the reset torsion spring is fixedly connected to the locking member.

8. A hidden handle, comprising: a handle base, which is mounted in the vehicle body; a handle body mounted in the handle base and having at least an initial position, a pre-deployed position, and an unlocked position; It is characterized in that it also includes the handle automatic reset mechanism according to any one of claims 1 to 7, the mounting cavity is formed in the handle base, and the handle body is transmission-connected to the second linkage end of the reset rod.

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