Vehicle door handle transmission mechanism and working method thereof

Abstract

The present invention relates to the technical field of automobile parts, and in particular to a door handle transmission mechanism, comprising a base, a handle and a swing arm being rotatably connected to the base, the handle position including at least a hidden position, an intermediate unfolded position and a maximum unfolded position, the swing arm being provided with at least one tooth, the handle being provided with a transmission guide surface corresponding to the tooth, the transmission guide surface being a cam surface, and the tooth and the transmission guide surface being matched in the present invention, which can save the space occupied by the handle in thickness, the transmission guide surface can be a cam surface, and the transmission process is more stable.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts, and in particular to a door handle transmission mechanism and a working method thereof. Background Art

[0002] The door handle is generally designed with a lever that contacts and interacts with the swing arm, such as the handle lever in patent No. CN201910385947.1. Due to the limitation of the swing arm's rotational travel, the handle lever must always be in contact with the swing arm. Therefore, the swing arm's lever is generally longer, so that the handle takes up a larger space at the back seat. The thickness of the entire handle is generally thicker, and the force of the push rod and the swing arm generally acts on the center of the swing arm. After a period of use, the center of the swing arm will move, affecting the transmission accuracy. Summary of the invention

[0003] In order to solve the problem in the prior art that the existing lever-type handle is thick and occupies a large space, the present invention provides a door handle transmission mechanism which reduces the thickness of the door handle.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] A door handle transmission mechanism comprises a base, a handle and a swing arm are rotatably connected to the base, the handle positions include at least a hidden position, an intermediate unfolded position and a maximum unfolded position, the swing arm is provided with at least one tooth, the handle is provided with a transmission guide surface corresponding to the tooth, and the transmission guide surface is a cam surface.

[0006] Furthermore, the angle between the direction of the interaction force at the contact point between the tooth and the transmission guide surface and the line connecting the contact point and the rotation center of the swing arm is 70° to 110°.

[0007] Furthermore, the swing arm is provided with a first ball head tooth and a second ball head tooth, and the transmission guide surface includes a first transmission guide surface and a second transmission guide surface respectively cooperating with the first ball head tooth and the second ball head tooth. During the unfolding process of the handle from the hidden position to the maximum unfolded position, the first ball head tooth cooperates with the first transmission guide surface and the second ball head tooth cooperates with the second transmission guide surface in sequence.

[0008] In the prior art, when the actuator of the door handle pushes the handle to the middle deployment position, if the handle is hit by external forces such as collision, the motor or actuator of the actuator is easily crushed. Even if the external force does not crush the actuator, the general impact force will cause damage to the actuator, such as causing wear to the gears of the motor. In this way, on the one hand, the ability of the actuator to resist external forces will be reduced after being damaged, the service life will be reduced, and the degree of damage is not easy to predict. On the other hand, the transmission accuracy is affected. In order to solve the problem that the actuator is easily damaged under the action of external forces and the transmission accuracy is affected, the present invention further provides a transmission mechanism of a handle and a slider and a working method thereof. Specifically: the handle of the present invention is provided with a handle leg, and the base is also provided with a slider for pushing the handle leg to move so that the handle rotates from the hidden position to the middle deployment position. The slider is connected to an actuator that drives the slider to move, and the slider is also provided with a support groove for supporting the handle leg pushed to the middle deployment position to reduce the damage to the actuator caused by the external force applied to the handle. When the handle leg reaches the middle deployment position, it contacts the support groove or the handle leg reaches the middle deployment position. There is still a distance between the support groove.

[0009] Furthermore, the direction of the combined force of the support groove on the handle leg avoids the thrust direction of the actuator.

[0010] Furthermore, the slider is provided with a push guide surface that contacts the handle leg and guides its rotation, and the push guide surface is a cam surface. The cam surface can gradually transition the support force received by the handle leg from the thrust direction of the actuator to the direction deviating from the thrust direction, and the transition is good.

[0011] Furthermore, the support groove includes a single support surface connected to the pushing guide surface.

[0012] Furthermore, the support groove at least includes a support bottom surface and a support side surface, the pushing guide surface is connected to the support side surface, the support side surface is arranged along the pushing direction of the slider (4), an end surface of the handle leg is parallel to the support side surface, and during the pushing process of the slider, the extension surface of the end surface is transformed from intersecting with the pushing guide surface to being aligned with the support side surface.

[0013] A working method of the door handle transmission mechanism as described above comprises the following steps:

[0014] S 1: The actuator pushes the slider out, and the slider pushes the handle leg to move, thereby driving the handle to rotate;

[0015] S2: The handle is rotated from the hidden position to the middle deployed position, and then the support slots are engaged with the support handle legs.

[0016] In step S2:

[0017] S21: When the handle leg reaches the middle unfolded position, that is, contacts the support groove, the actuator stops moving;

[0018] S22: When the handle leg reaches the middle unfolded position and there is still a distance between the handle leg and the support groove, the actuator drives the slider to continue to move a distance, and the handle leg does not move until the support groove fully supports the handle leg.

[0019] Beneficial effects:

[0020] (1) The teeth of the present invention cooperate with the transmission guide surface, which can save the space occupied by the handle in thickness. The transmission guide surface can be a cam surface, and the transmission process is more stable.

[0021] (2) When the handle is unfolded, the first ball head tooth contacts and cooperates with the first transmission guide surface first, and then the second ball head tooth contacts and cooperates with the second transmission guide surface. In this way, it is equivalent to using two sets of round head teeth and the transmission guide surface to relay in the entire rotation stroke. Compared with the existing handle that cooperates with the lever and the swing arm, it ensures smooth transmission and can save space to a greater extent.

[0022] (3) The angle between the direction of the interaction force at the contact point between the tooth and the transmission guide surface and the line connecting the contact point and the rotation center of the swing arm is 70° to 110°. In this way, the force on the swing arm is almost perpendicular to the line connecting the contact point and the center of the swing arm (that is, it is almost a tangential force), and the axial force on the swing arm will not be too large, thereby reducing the transmission friction and the risk of jamming, ensuring that the transmission of the handle and the swing arm is more stable;

[0023] (4) The handle legs of the support groove play a supporting role. When external force acts on the handle, the handle legs are supported by the support groove, and the direction of the combined force of the support avoids the force direction that is easily damaged by the actuator, thereby protecting the actuator or motor and other actuators, improving the life of the actuator and the external force bearing capacity of the handle, and the external force value that can be borne is increased from hundreds of Newtons to thousands of Newtons. The actuator is not easy to wear, thereby ensuring the transmission accuracy of the slider and the handle. Combined with the good transmission performance of the handle and the swing arm above, the transmission accuracy of the slider and the handle and the handle and the sliding arm can be guaranteed, thereby improving the overall transmission accuracy of the handle;

[0024] (5) After the handle reaches the unfolded position, the actuator drives the slider to continue moving for a distance. At this time, the handle legs do not move until the support grooves support the handle legs. This can provide a soft stop protection for the actuator motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0026] Figure 1 It is a schematic diagram of the position of the handle during the unfolding process;

[0027] Figure 2 This is the coordination diagram of the handle and swing arm in the hidden position;

[0028] Figure 3 This is the coordination diagram of the handle and swing arm in the middle unfolded position;

[0029] Figure 4 This is the coordination diagram of the handle and swing arm in the maximum deployment position;

[0030] Figure 5 It is a transmission schematic diagram of the handle and the slider of the present invention;

[0031] Figure 6 This is a schematic diagram of the cooperation between the handle leg and the slider in Example 1;

[0032] Figure 7 It is a schematic diagram of the structure of the slider and the actuator of Example 2;

[0033] Figure 8 This is a structural diagram of the handle legs of Example 2;

[0034] Among them, 1. base, 2. handle, 21. first transmission guide surface, 22. second transmission guide surface, 23. handle leg, 231. end surface, 3. swing arm, 31. first ball head tooth, 32. second ball head tooth, 4. slider, 41. push guide surface, 42. support groove, 421. support bottom surface, 422. support side surface, 5. actuator. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0037] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0038] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0039] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0040] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0041] like Figures 1 to 4 A door handle transmission mechanism includes a base 1, a handle 2 and a swing arm 3 are rotatably connected to the base 1, the handle 2 has at least a hidden position, an intermediate deployment position, and a maximum deployment position, the swing arm 3 is provided with at least one tooth, the handle 2 is provided with a transmission guide surface corresponding to the tooth, and the transmission guide surface is a cam surface. The angle between the direction of the interaction force at the contact point between the tooth and the transmission guide surface and the line connecting the contact point and the rotation center of the swing arm 3 is 70° to 110°.

[0042] The swing arm 3 is provided with a first ball head tooth 31 and a second ball head tooth 32, and the transmission guide surface includes a first transmission guide surface 21 and a second transmission guide surface 21 respectively matched with the first ball head tooth 31 and the second ball head tooth 32, and the first transmission guide surface 21 and the second transmission guide surface 21 can be cam surfaces. During the unfolding process of the handle from the hidden position to the maximum unfolded position, the first ball head tooth 31 and the first transmission guide surface 21 are matched, and the second ball head tooth 32 and the second transmission guide surface 21 are matched in sequence.

[0043] like Figure 2 , the handle 2 is in the hidden position, at which time the first ball head tooth 31 cooperates with the first transmission guide surface 21; Figure 3 , the handle 2 is in the middle unfolded position, at which time the first ball-headed tooth 31 is about to separate from the first transmission guide surface 21, and the second ball-headed tooth 32 is about to contact with the second transmission guide surface 22; Figure 4, the handle 2 is in the maximum unfolded position, at which time the second ball-headed tooth 32 cooperates with the second transmission guide surface 22, and the first ball-headed tooth 31 separates from the first transmission guide surface 21. Therefore, during the unfolding process of the handle 2, the first ball-headed tooth 31 first contacts and cooperates with the first transmission guide surface 21, and then the second ball-headed tooth 32 cooperates with the second transmission guide surface 21. In this way, it is equivalent to using two sets of round-headed teeth and the transmission guide surface to relay in the entire rotation stroke, which ensures stable transmission and can save space to a great extent.

[0044] like Figure 5 The handle 2 of the present invention is provided with a handle leg 23, and the base 1 is also provided with a slider 4 for pushing the handle leg 23 to move so that the handle 2 rotates from the hidden position to the middle unfolded position. The slider 4 is connected to an actuator 5 that drives it to move. The slider 4 is also provided with a support groove 42 for supporting the handle leg 23 pushed to the middle unfolded position to reduce the damage to the actuator 5 caused by the external force applied to the handle 2. When the handle leg 23 reaches the middle unfolded position, it contacts the support groove 42 or the handle leg 23 reaches the middle unfolded position and is still some distance away from the support groove 42.

[0045] The direction of the combined force of the support groove 42 on the handle leg 23 avoids the thrust direction of the actuator 5. The direction of the combined force of the support groove 42 on the handle leg 23 avoids the thrust direction of the actuator 5, which can protect the actuator 5 such as the actuator or motor to a certain extent. Or, preferably, the direction of the combined force of the support groove 42 on the handle leg 23 avoids the force direction that is easily damaged by the actuator 5. The force direction that is easily damaged by the actuator 5 can be obtained through experiments, such as by continuously applying forces in different directions to the actuator 5 to measure the force direction that is most easily damaged by the actuator 5, thereby avoiding the combined force direction of the pressure of the handle leg 23 on the support groove 42 (which is a reaction force to the support force of the support groove on the handle leg) from the force direction that is most easily damaged.

[0046] The slider 4 is provided with a push guide surface 41 which contacts with the handle leg 23 and guides the rotation thereof. The push guide surface 41 is a cam surface.

[0047] The supporting groove 42 has the following embodiments:

[0048] Embodiment 1:

[0049] like Figure 6 The support groove 42 includes a single support surface connected to the pushing guide surface 41.

[0050] Embodiment 2:

[0051] like Figure 7 and Figure 8The support groove 42 at least includes a support bottom surface 421 and a support side surface 422, the pushing guide surface 41 is connected to the support side surface 422, the support side surface 422 is arranged along the pushing direction of the slider 4, one of the end surfaces 231 of the handle leg 23 is parallel to the support side surface 422, and during the pushing process of the slider 4, the extension surface of the end surface 231 is transformed from crossing with the pushing guide surface 41 to being aligned with the support side surface 422.

[0052] A working method of the door handle transmission mechanism as described above comprises the following steps:

[0053] S1: The actuator 5 pushes the slider 4 out, and the slider 4 pushes the handle leg 23 to move, thereby driving the handle 2 to rotate;

[0054] S2: The handle 2 is rotated from the hidden position to the middle unfolded position, and then the support groove 42 cooperates with the support handle leg 23 .

[0055] In step S2:

[0056] S21: When the handle leg 23 reaches the middle unfolded position, that is, contacts the support groove 42, the actuator 5 stops moving;

[0057] S22: When the handle leg 23 reaches the middle unfolded position and is still some distance away from the support groove 42, the actuator 5 drives the slider 4 to continue moving for a distance, and the handle leg 23 does not move until the support groove 42 fully supports the handle leg 23.

[0058] Working principle of the integrated door handle:

[0059] When the handle 2 is in the hidden position, the handle 2 is manually pressed to trigger the micro switch set under the handle 2, and then the actuator 5 pushes the handle 22 to the middle unfolded position. When the handle 2 is in the middle unfolded position, the person holds the handle 2 and continues to rotate it outward to the maximum unfolded position. During this process, a signal can be given by the swing arm 3 touching the micro switch, etc., and then fed back to the controller to execute the door unlocking. At this time, the actuator 5 can also be controlled to retract at the same time. The handle 2 drives the swing arm 3 to rotate during the unfolding process. When returning, the return spring such as the torsion spring installed in the center of the swing arm 3 drives the swing arm 3 and pushes the handle 2 to return.

[0060] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A door handle transmission mechanism, characterized in that: The invention comprises a base (1), wherein a handle (2) and a swing arm (3) are rotatably connected to the base (1), wherein the position of the handle (2) includes at least a hidden position, an intermediate unfolded position and a maximum unfolded position, wherein the swing arm (3) is provided with at least one tooth, and the handle (2) is provided with a transmission guide surface corresponding to the tooth, wherein the transmission guide surface is a cam surface; the handle (2) is provided with a handle leg (23), and the base (1) is further provided with a handle for pushing the handle leg (23) to move so that the handle (2) A slider (4) is rotated from a hidden position to an intermediate unfolded position, the slider (4) being connected to an actuator (5) for driving the slider to move, the slider (4) also being provided with a support groove (42) for supporting a handle leg (23) pushed to the intermediate unfolded position to reduce damage to the actuator (5) caused by an external force applied to the handle (2), the handle leg (23) being in contact with the support groove (42) when reaching the intermediate unfolded position, or the handle leg (23) being at a distance from the support groove (42) when reaching the intermediate unfolded position.

2. A door handle transmission mechanism according to claim 1, characterized in that: The angle between the direction of the interaction force at the contact point between the tooth and the transmission guide surface and the line connecting the contact point and the rotation center of the swing arm (3) is 70° to 110°.

3. A door handle transmission mechanism according to claim 1, characterized in that: The swing arm (3) is provided with a first ball head tooth (31) and a second ball head tooth (32), and the transmission guide surface includes a first transmission guide surface (21) and a second transmission guide surface (22) respectively matched with the first ball head tooth (31) and the second ball head tooth (32). When the handle is unfolded from a hidden position to a maximum unfolded position, the first ball head tooth (31) and the first transmission guide surface (21) are matched, and the second ball head tooth (32) and the second transmission guide surface (22) are matched in sequence.

4. A door handle transmission mechanism according to claim 1, characterized in that: The direction of the combined force of the support groove (42) on the handle support leg (23) avoids the thrust direction of the actuator (5).

5. A door handle transmission mechanism according to claim 4, characterized in that: The sliding block (4) is provided with a pushing guide surface (41) which contacts the handle leg (23) and guides its rotation, and the pushing guide surface (41) is a cam surface.

6. A door handle transmission mechanism according to claim 5, characterized in that: The supporting groove (42) comprises a single supporting surface connected to the pushing guide surface (41).

7. A door handle transmission mechanism according to claim 5, characterized in that: The support groove (42) at least comprises a support bottom surface (421) and a support side surface (422); the pushing guide surface (41) is connected to the support side surface (422); the support side surface (422) is arranged along the pushing direction of the slider (4); one end surface (231) of the handle leg (23) is parallel to the support side surface (422); and during the pushing process of the slider (4), the extension surface of the end surface (231) is transformed from crossing with the pushing guide surface (41) to being aligned with the support side surface (422).

8. A method for operating a door handle transmission mechanism according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1: The actuator (5) pushes the slider (4), and the slider (4) pushes the handle leg (23) to move, thereby driving the handle (2) to rotate; S2: The handle (2) is rotated from the hidden position to the middle unfolded position, and then the support groove (42) cooperates with the support handle leg (23).

9. A working method of a vehicle door handle transmission mechanism according to claim 8, characterized in that: In step S2: S21: When the handle leg (23) reaches the middle unfolded position, i.e., contacts the support groove (42), the actuator (5) stops moving; S22: When the handle leg (23) reaches the middle unfolded position and there is still a distance between it and the support groove (42), the actuator (5) drives the slider (4) to continue moving for a distance, and the handle leg (23) does not move until the support groove (42) fully supports the handle leg (23).

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