Rotary push-out driving device

Abstract

The utility model belongs to the field of automobile parts, and provides a rotary push-out driving device which comprises a shell, a push rod, a push rod and a push rod. The driving piece is arranged in the mounting containing cavity, and the driving end of the driving piece is coaxially connected with a worm; the transmission assembly is arranged in the installation containing cavity, the rotating axis of the transmission assembly is perpendicular to the rotating axis of the worm, and the transmission assembly is movably meshed with the worm. Compared with the prior art, the utility model has the advantages that the worm is movably meshed with the output bevel gear to realize primary transmission, so that the use of parts is reduced, the manufacturing cost is saved, the working noise is reduced, and meanwhile, the rotating cam and the output bevel gear are coaxially arranged, so that the working efficiency is improved. The automobile door handle is smoothly ejected out in the process that the rotating cam is switched from the first position to the second position, the overall structure is simple, guarantee is provided for the stability of the automobile door handle during operation, and the use experience feeling of customers is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the field of automobile parts, and particularly relates to a rotary push-out driving device. Background Art

[0002] With the continuous development of new energy vehicles, the pace of electrification and intelligentization of automobiles is accelerating, and the electrification of automobile parts is also inevitable.

[0003] The automobile door handle is an important part of the door system. Nowadays, more and more automobiles begin to adopt a hidden door handle structure. However, the existing door handle push-out driving devices on the market are relatively complex. They not only use more parts, resulting in relatively large noise during operation, but also increase the manufacturing cost of the door handle driving device, which is not conducive to meeting the usage needs of customers. Summary of the Utility Model

[0004] Aiming at the above-mentioned deficiencies existing in the prior art, the technical problem to be solved by the utility model is to provide a rotary push-out driving device.

[0005] The technical solution adopted by the utility model to solve its technical problem is to provide a rotary push-out driving device, including: a housing, within which an installation cavity is formed;

[0006] A driving member, disposed in the installation cavity, and a worm is coaxially connected to the driving end of the driving member;

[0007] A transmission assembly, disposed in the installation cavity, the rotation axis of the transmission assembly is perpendicular to the rotation axis of the worm, and the transmission assembly is movably engaged with the worm;

[0008] A rotary cam, disposed on the transmission assembly, the rotary cam can be switched between a first position and a second position in the installation cavity, and the rotary cam is movably abutted against the door handle;

[0009] The door handle can be hidden inside the door when the rotary cam is in the first position;

[0010] The rotary cam can be synchronously rotated to the second position when the driving member drives the transmission assembly to rotate, so as to push the door handle out of the vehicle door.

[0011] In the above-mentioned rotary push-out driving device, the transmission assembly includes:

[0012] An output shaft, rotatably disposed in the installation cavity, the rotation axis of the output shaft is perpendicular to the rotation axis of the worm, and the rotary cam is disposed on the output shaft and rotates synchronously with it;

[0013] The output helical gear is arranged on the output shaft and rotates synchronously therewith, and the output helical gear meshes with the worm movably;

[0014] The output helical gear can drive the output shaft to rotate synchronously with the rotary cam due to the rotation of the worm, so as to realize the pushing out of the door handle.

[0015] In the above-mentioned rotary pushing drive device, a supporting part and a driving part are formed on the rotary cam, a rotary arm is connected to the door handle, and the supporting part abuts against the torsion spring member connecting the rotary arm movably; the driving part is located on one side of the supporting part and is used for movably pushing the rotary arm to rotate around its rotation center, so as to realize the pushing out of the door handle.

[0016] In the above-mentioned rotary pushing drive device, splines are formed on the outer wall of the output shaft, spline holes are formed on both the output helical gear and the rotary cam, and the spline holes are connected with the splines on the output shaft.

[0017] In the above-mentioned rotary pushing drive device, the housing includes an upper cover and a lower cover. A first groove is formed in the upper cover, and a second groove is formed in the lower cover. When the upper cover is connected to the lower cover, the first groove and the second groove together form the installation cavity.

[0018] In the above-mentioned rotary pushing drive device, the driving part is arranged in a spiral line.

[0019] In the above-mentioned rotary pushing drive device, a positioning groove is further formed in the lower cover, and the transmission assembly further includes a bearing. The bearing is located at the end of the output shaft and abuts against one side of the output helical gear, and the bearing is placed in the positioning groove.

[0020] In the above-mentioned rotary pushing drive device, an installation groove is further arranged at the end of the output shaft, and a buffer gasket is arranged in the installation groove to prevent the output shaft from shaking when rotating.

[0021] In the above-mentioned rotary pushing drive device, a limiting groove is further formed in the upper cover, and the output helical gear is rotatably arranged in the limiting groove to limit the displacement of the output helical gear along the axial line direction of the output shaft when rotating.

[0022] In the above-mentioned rotary pushing drive device, a sealing ring is further arranged at the rotational connection part of the output shaft and the upper cover.

[0023] Compared with the prior art, the advantages of the present utility model are as follows: the worm on the driving end of the driving member is movably engaged with the output helical gear to achieve primary transmission, reducing the use of components, saving manufacturing costs and reducing working noise. At the same time, by arranging the rotating cam, the output shaft and the output helical gear coaxially, when the rotating cam switches from the first position to the second position, the door handle is smoothly pushed out. The overall structure is simple, the operation is convenient and fast, which ensures the stability during the operation of the door handle and greatly improves the user experience of customers. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a perspective view of the present application;

[0025] Figure 2 is a schematic installation structure diagram of the transmission component and the driving member in the upper cover;

[0026] Figure 3 is a schematic installation structure diagram of the second groove and the positioning groove in the lower cover.

[0027] In the figure, 1. housing; 10. upper cover; 100. first groove; 101. limiting groove; 11. lower cover; 110. second groove; 111. positioning groove; 12. installation cavity;

[0028] 2. driving member; 20. worm;

[0029] 3. transmission component; 31. output shaft; 310. installation groove; 311. buffer gasket; 32. output helical gear; 33. spline hole; 34. bearing;

[0030] 4. rotating cam; 40. supporting part; 41. driving part;

[0031] 5. rotating arm. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The following are specific embodiments of the present utility model in combination with the accompanying drawings to further describe the technical solutions of the present utility model, but the present utility model is not limited to these embodiments.

[0033] Such as Figures 1 to 3As shown in the figure, a rotary push drive device of the present utility model includes: a housing 1, inside which an installation cavity 12 is formed; a driving member 2, arranged in the installation cavity 12, and a worm 20 is coaxially connected to the driving end of the driving member 2; a transmission assembly 3, arranged in the installation cavity 12, the rotation axis of the transmission assembly 3 is perpendicular to the rotation axis of the worm 20, and the transmission assembly 3 is movably engaged with the worm 20; a rotary cam 4, arranged on the transmission assembly 3, the rotary cam 4 can be switched between a first position and a second position in the installation cavity 12, and the rotary cam 4 is movably abutted against the door handle; the door handle can be hidden inside the door when the rotary cam 4 is in the first position; the rotary cam 4 can be synchronously rotated to the second position when the driving member 2 drives the transmission assembly 3 to rotate, so as to push the door handle out of the vehicle door.

[0034] This solution is mainly used to realize the pushing out of the hidden door handle. Specifically, as Figure 1 shown in Figure 2 the figure, at this time, the rotary cam 4 is in the first position in the installation cavity 12, that is, the external door handle is hidden inside the door. When the user needs to use it, the driving member 2 can be started, and the transmission assembly 3 can be driven to rotate by the worm 20 coaxially connected to the driving end of the driving member 2. Since the rotary cam 4 is coaxially arranged with the transmission assembly 3, the rotary cam 4 can rotate synchronously with the transmission assembly 3. Furthermore, when the rotary cam 4 is switched from the Figure 2 first position it is in to the second position (not shown in the figure), the door handle can be smoothly pushed out of the vehicle door for the user to open the door. It can be seen that this drive device realizes the arbitrary switching of the rotary cam 4 at two positions by using a one-stage transmission structure, reduces the use of parts, saves the manufacturing cost and reduces the working noise. At the same time, by arranging the rotary cam 4 and the transmission assembly 3 coaxially, the time for pushing out the door handle is saved to a great extent. This drive device not only has a simple overall structure, is convenient and fast to operate, but also provides a guarantee for the stability of the door handle during operation, greatly improving the user experience of the customer.

[0035] Preferably, when the door handle is in the pushed-out state (that is, at this time, the rotary cam 4 is in the first position), after the user has completed using it, the rotary cam 4 can be rotated and reset from the second position to the first position by reversing the driving member 2, so as to ensure that the door handle is hidden inside the door again.

[0036] The transmission assembly 3 includes: an output shaft 31 rotatably arranged in the installation cavity 12, the rotation axis of the output shaft 31 is perpendicular to the rotation axis of the worm 20, and the rotary cam 4 is arranged on the output shaft 31 and rotates synchronously with it; an output helical gear 32 arranged on the output shaft 31 and rotating synchronously with it, the output helical gear 32 is movably engaged with the worm 20; the output helical gear 32 can drive the output shaft 31 and the rotary cam 4 to rotate synchronously due to the rotation of the worm 20, so as to realize the pushing out of the door handle.

[0037] Further, as Figure 2 shown, both ends of the output shaft 31 are rotatably connected in the installation cavity 12. Since the output helical gear 32 and the rotary cam 4 are coaxially arranged on the output shaft 31, when the driving member 2 drives the worm 20 to rotate, the output helical gear 32 movably engaged with the worm 20 drives the output shaft 31 to rotate while being rotatable, and then realizes the pushing out action of the door handle when the rotary cam 4 rotates. The overall structure is simple, and the rotation of the rotary cam 4 can be realized through the first-stage transmission structure of the worm 20 and the output helical gear 32, which not only reduces the manufacturing cost but also reduces the noise generated during operation.

[0038] Preferably, a PCB board and a Hall sensor (not shown in the figure) electrically connected to it are also arranged in the housing 1. The Hall sensor can record the rotation value of the output shaft 31 and transmit the value to the PCB board, and then the received signal is fed back to the vehicle's BCM or the door panel controller through the PCB board.

[0039] A support portion 40 and a driving portion 41 are formed on the rotary cam 4. A rotary arm 5 is connected to the door handle. The support portion 40 movably abuts against the torsion spring member connecting the rotary arm 5; the driving portion 41 is located on one side of the support portion 40 and is used to movably push the rotary arm 5 to rotate around its rotation center, so as to realize the pushing out of the door handle.

[0040] As Figure 1 shown, the rotary cam 4 is composed of two parts, namely a support portion 40 and a driving portion 41. Among them, a rotary arm 5 is connected to the door handle. When the driving member 2 rotates forward and drives the rotary cam 4 along Figure 3 Figure 3 ​When rotating counterclockwise, the rotation of the driving part 41 can be utilized to push the rotating arm 5 to rotate around its rotation center (not shown in the figure), and finally the door handle can be smoothly pushed out. Preferably, the driving part 41 in this solution is arranged in a spiral line, which is beneficial for the driving part 41 to gradually push out the door handle through the spiral line structure during rotation, effectively avoiding the phenomenon of the door handle getting stuck or even damaged due to the relatively fast pushing speed. Additionally, it should be noted that the door handle is not only completed by the reverse rotation of the driving member 2, but also needs to cooperate with the torsion spring member (including the torsion spring and the fixed seat for installing the torsion spring, not shown in the figure) on the rotating arm 5. Therefore, in order to ensure the stability of the force exerted by the torsion spring on the rotating arm 5, the supporting part 40 is used to actively press against the fixed seat on the torsion spring, thereby providing guarantee for the stability of the door handle during the pushing process or the reset process.

[0041] Furthermore, splines are formed on the outer wall of the output shaft 31 in this solution, and spline holes 33 are formed on both the output bevel gear 32 and the rotating cam 4 (where an installation sleeve for installing the connecting shaft is provided on the rotating cam 4, and the spline hole 33 is arranged on the inner wall of the installation sleeve). By connecting the spline hole 33 with the splines on the output shaft 31, when the worm 20 drives the output bevel gear 32 to rotate, the output shaft 31 and the rotating cam 4 can rotate synchronously, thereby realizing the rapid ejection of the door handle. The overall structure is simple, the installation is convenient and fast, and it also provides convenience for subsequent maintenance and replacement. Of course, this connection method is not limited to the one in this embodiment, and other connection methods such as interference fit and setting limit grooves can also be used for connection.

[0042] The housing 1 includes an upper cover 10 and a lower cover 11. A first groove 100 is formed in the upper cover 10, and a second groove 110 is formed in the lower cover 11. When the upper cover 10 is connected to the lower cover 11, the first groove 100 and the second groove 110 jointly form an installation cavity 12.

[0043] As Figures 1 to 3 shown, the housing 1 is composed of two parts, namely the upper cover 10 and the lower cover 11. By using the structures of the first groove 100 and the second groove 110 formed inside, it can not only fix the driving member 2 to prevent it from generating displacement in the installation cavity 12, but also effectively ensure that the output shaft 31, the output bevel gear 32, and the rotating cam 4 do not generate axial displacement, improving the stability of the overall structure of the driving device.

[0044] Preferably, a sealing ring (not shown in the figure) is also provided at the rotational connection between the output shaft 31 and the upper cover 10. This sealing ring can effectively prevent the driving member 2, the worm 20, the output shaft 31, the output bevel gear 32, and the rotating cam 4 from being damaged by external water stains, achieving a good sealing and waterproof effect.

[0045] A positioning groove 111 is further formed inside the lower cover 11. The transmission assembly 3 further includes a bearing 34. The bearing 34 is located at the end of the output shaft 31 and abuts against one side of the output helical gear 32, and the bearing 34 is placed inside the positioning groove 111.

[0046] Furthermore, the positioning groove 111 can limit the installation of the bearing 34, and at the same time also limit the movement of the output helical gear 32 in the axial direction of the output shaft 31. Moreover, the inner ring of the bearing 34 is in interference fit with the output shaft 31, and the outer ring abuts tightly inside the positioning groove 111, which is beneficial to improving the smoothness when the output shaft 31 drives the rotating cam 4 to rotate.

[0047] Preferably, as Figure 2 shown, an installation groove 310 is further provided at the end of the output shaft 31. A buffer gasket 311 is arranged inside the installation groove 310. The buffer gasket 311 can effectively prevent the output shaft 31 from shaking axially when rotating, and at the same time also reduces the wear at the end of the output shaft 31, which is beneficial to reducing the noise generated when the output shaft 31 operates.

[0048] A limiting groove 101 is further formed inside the upper cover 10. The output helical gear 32 is rotatably arranged inside the limiting groove 101 to limit the displacement of the output helical gear 32 in the axial direction of the output shaft 31 when rotating.

[0049] Similarly, the design of the limiting groove 101 can limit the displacement of the output helical gear 32 in the axial direction of the output shaft 31, effectively avoiding the instability of the output helical gear 32 when it cannot ensure the active meshing with the worm 20 due to the axial displacement.

[0050] It should be noted that the driving member 2 in this solution can be replaced by other driving devices such as a stepping motor or a servo motor.

[0051] It should be noted that all the directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative position relationship and movement conditions between components in a certain specific posture (as shown in the drawings). If this specific posture changes, then the directional indication also changes accordingly.

[0052] In addition, in the present utility model, descriptions such as "first", "second", "one" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0053] In the present utility model, unless otherwise clearly stipulated and defined, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0054] In addition, the technical solutions between various embodiments of the present utility model can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

Claims

1. A rotary ejection drive device, characterized in that: include: A housing having an installation cavity formed therein; A driving member is arranged in the installation cavity, and a driving end of the driving member is coaxially connected with a worm; A transmission assembly is arranged in the installation cavity, the rotation axis of the transmission assembly is arranged perpendicular to the rotation axis of the worm, and the transmission assembly is movably meshed with the worm; A rotating cam is arranged on the transmission assembly, the rotating cam can be switched between a first position and a second position of the mounting cavity, and the rotating cam is movable against the door handle; The door handle may be hidden in the door when the rotary cam is in the first position; The rotating cam can be synchronously rotated to the second position when the driving member drives the transmission assembly to rotate, so as to push the door handle out of the door.

2. A rotary ejection drive device according to claim 1, characterized in that: The transmission assembly comprises: An output shaft is rotatably disposed in the mounting cavity, the rotation axis of the output shaft is perpendicular to the rotation axis of the worm, and the rotating cam is disposed on the output shaft and rotates synchronously therewith; an output helical gear, disposed on the output shaft and rotating synchronously therewith, the output helical gear being movably meshed with the worm; The output bevel gear can drive the output shaft and the rotating cam to rotate synchronously due to the rotation of the worm, so as to realize the pushing out of the door handle.

3. A rotary ejection drive device according to claim 1, characterized in that: A supporting portion and a driving portion are formed on the rotating cam, and a rotating arm is connected to the door handle. The supporting portion movably presses against a torsion spring member connected to the rotating arm; the driving portion is located on one side of the supporting portion, and is used for movably pushing the rotating arm to rotate around its rotation center to realize the pushing out of the door handle.

4. A rotary ejection drive device according to claim 2, characterized in that: The outer wall of the output shaft is formed with a spline, and the output bevel gear and the rotating cam are both formed with a spline hole, and the spline hole is connected to the spline on the output shaft.

5. A rotary ejection drive device according to claim 2, characterized in that: The shell includes an upper cover and a lower cover. A first groove is formed in the upper cover, and a second groove is formed in the lower cover. When the upper cover is connected to the lower cover, the first groove and the second groove together form the installation cavity.

6. A rotary ejection drive device according to claim 3, characterized in that: The driving part is arranged in a spiral shape.

7. A rotary ejection drive device according to claim 5, characterized in that: A positioning groove is also formed in the lower cover, and the transmission assembly also includes a bearing, which is located at the end of the output shaft and abuts against one side of the output bevel gear, and the bearing is placed in the positioning groove.

8. A rotary ejection drive device according to claim 2, characterized in that: The end of the output shaft is also provided with a mounting groove, and a buffer gasket is arranged in the mounting groove to prevent the output shaft from shaking when rotating.

9. A rotary ejection drive device according to claim 5, characterized in that: A limiting groove is also formed in the upper cover, and the output bevel gear is rotatably arranged in the limiting groove to limit the displacement of the output bevel gear along the axis direction of the output shaft when rotating.

10. A rotary ejection drive device according to claim 5, characterized in that: A sealing ring is also provided at the rotation connection between the output shaft and the upper cover.

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