Turnover driving device

Abstract

The invention relates to an overturning driving device which comprises an executing mechanism, a clutch mechanism and a rotating support, the executing mechanism is connected with the clutch mechanism, the clutch mechanism is connected with the rotating support, the executing mechanism is used for driving the clutch mechanism to rotate, the clutch mechanism has a connection state and a separation state, and the rotating support is connected with the executing mechanism. When the executing mechanism drives the clutch mechanism to rotate in the forward direction, the clutch mechanism is in a joint state so that the rotating support can rotate in the forward direction. When the rotating support rotates reversely under the action of external force, the clutch mechanism is in a separated state, so that the rotating support rotates reversely relative to the executing mechanism. According to the overturning driving device, the clutch mechanism is connected during forward rotation and separated during reverse rotation, the executing mechanism can drive the rotating support to rotate forward through the clutch mechanism, when the rotating support rotates reversely under the action of external force, the external force cannot be transmitted to the executing mechanism, and therefore the structure of the executing mechanism cannot be damaged.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle parts, and more particularly to a flipping drive device. Background Art

[0002] There are many flipping devices on vehicles, such as flipping screens, glove boxes, etc. They usually include a flipping member (such as a screen, a box body, etc.) and a flipping drive device. The flipping member is rotatably connected to a base (such as a vehicle frame). The flipping drive device is disposed on the base and connected to the flipping member, so as to drive the flipping member to rotate relative to the base to achieve flipping.

[0003] The existing flipping drive device is directly connected to the flipping member. When the flipping member is impacted by an external force, this external force will be transmitted to the flipping drive device and damage the structure of the flipping drive device. Summary of the Invention

[0004] The purpose of the present invention is to provide a flipping drive device to avoid damage to the structure of the flipping drive device when the flipping member is impacted by an external force.

[0005] Based on the above purpose, the present invention provides a flipping drive device, including an actuator, a clutch mechanism, and a rotating bracket. The actuator is connected to the clutch mechanism, and the clutch mechanism is connected to the rotating bracket. The actuator is used to drive the clutch mechanism to rotate. The clutch mechanism has an engaged state and a disengaged state. When the actuator drives the clutch mechanism to rotate forward, the clutch mechanism is in the engaged state to make the rotating bracket rotate forward. When the rotating bracket is reversely rotated by an external force, the clutch mechanism is in the disengaged state to make the rotating bracket rotate reversely relative to the actuator.

[0006] Further, the clutch mechanism includes an input member, a cam, and an output member. The input member is detachably connected to the cam. The cam is fixedly connected to the output member. The output member is connected to the rotating bracket. The actuator is fixedly connected to the input member. When the clutch mechanism is in the engaged state, the input member is connected to the cam. When the clutch mechanism is in the disengaged state, the input member is disconnected from the cam.

[0007] Further, one end of the input member close to the cam is formed as an input sleeve. The cam includes a cam sleeve and a cam shaft formed on the cam sleeve. The input sleeve is sleeved outside the cam shaft, and the input sleeve and the cam shaft are in clearance fit. A plurality of wedge-shaped rolling grooves are formed between the cam sleeve and the input sleeve. Rolling elements are provided in the wedge-shaped rolling grooves, and the rolling elements are respectively in contact with the input sleeve and the cam sleeve.

[0008] Further, an input shaft is formed on the input sleeve, and the input shaft is connected to the actuator so as to drive the input shaft to rotate through the actuator.

[0009] Further, the output member includes an output sleeve and an output shaft formed on the output sleeve. The output shaft is inserted into the cam sleeve and fixedly connected to the cam sleeve.

[0010] Further, one end of the rotating bracket close to the output member is formed as a bracket sleeve, and the bracket sleeve is sleeved outside the output sleeve; the output sleeve is sleeved outside a collar, and the collar is used to avoid friction between the rotating bracket and the output member.

[0011] Further, the clutch mechanism further includes a first box body, the first box body is fixedly connected to the rotating bracket and the input member respectively, and the cam is located inside the first box body; a gasket is provided between the cam and the inner wall of the first box body.

[0012] Further, a damping ring is provided between the rotating bracket and the output member so that when the actuator drives the clutch mechanism to rotate forward, the rotating bracket and the damping ring rotate forward together with the output member.

[0013] Further, a polymer material coating is provided on the inner side of the damping ring.

[0014] Further, the actuator includes a motor, a worm, a first double gear, a second double gear, a third double gear and an output gear. The motor is connected to the worm, the worm meshes with the first gear of the first double gear, the second gear of the first double gear meshes with the first gear of the second double gear, the second gear of the second double gear meshes with the first gear of the third double gear, the second gear of the third double gear meshes with the output gear, and the output gear is connected to the clutch mechanism; the actuator further includes a second box body, a first cover body and a second cover body. The motor, the worm, the first double gear, the second double gear, the third double gear and the output gear are all installed in the second box body, and the first cover body and the second cover body are both connected to the second box body for covering the inside of the second box body.

[0015] The flipping drive device of the present invention has a clutch mechanism that engages during forward rotation and disengages during reverse rotation. This enables the actuating mechanism to drive the rotating bracket to rotate forward through the clutch mechanism. When the rotating bracket rotates reversely under an external force, the external force cannot be transmitted to the actuating mechanism, thus not damaging the structure of the actuating mechanism. A damping ring is provided between the output member and the rotating bracket and can rotate together with the output member and the rotating bracket, allowing the actuating mechanism to output a greater torque without having to overcome the resistance of the damping ring. The actuating mechanism employs a two-stage double worm and worm gear and a two-stage cylindrical gear transmission, which is compact and can meet the installation requirements of small local spaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. 6 is a schematic structural diagram of a flipping device according to an embodiment of the present invention;

[0017] Figure 2 FIG. 7 is an exploded view of the clutch mechanism and the rotating bracket of the flipping drive device according to an embodiment of the present invention;

[0018] Figure 3 FIG. 8 is a cross-sectional view of the clutch mechanism and the rotating bracket of the flipping drive device according to an embodiment of the present invention;

[0019] Figure 4 FIG. 9 is a graph showing the ratio of the effective torque of the flipping drive device according to an embodiment of the present invention and the ratio of the effective torque of the flipping drive device in the prior art;

[0020] Figure 5 FIG. 10 is an exploded view of the actuating mechanism of the flipping drive device according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following will, with reference to the drawings, give the preferred embodiments of the present invention and describe them in detail.

[0022] As Figure 1As shown in the figure, an embodiment of the present invention provides a flipping device, which includes a flipping driving device and a flipping member 400. The flipping driving device includes an actuating mechanism 100, a clutch mechanism 200, and a rotating bracket 300. The actuating mechanism 100 is connected to the clutch mechanism 200, the clutch mechanism 200 is connected to the rotating bracket 300, and the rotating bracket 300 is connected to the flipping member 400. The flipping driving device is disposed on a base 500, and the flipping member 400 is also rotatably connected to the base 500. For example, it can be rotatably connected to the base 500 through a rotating shaft (or another rotating bracket) 600. The actuating mechanism 100 is used to provide a driving force, which causes the clutch mechanism 200 and the rotating bracket 300 to rotate, so that the flipping member 400 rotates relative to the base 500 to achieve flipping. The clutch mechanism 200 has an engaged state and a disengaged state. When the actuating mechanism 100 drives the clutch mechanism 200 to rotate forward, the clutch mechanism 200 is in the engaged state and causes the rotating bracket 300 to rotate forward. When the rotating bracket 300 rotates backward under the action of an external force, the clutch mechanism 200 is in the disengaged state, so that the rotating bracket 300 rotates backward relative to the actuating mechanism 100 (at this time, the actuating mechanism 100 will not rotate backward under the action of an external force). In this way, the external force cannot be transmitted to the actuating mechanism 100, so the structure of the actuating mechanism 100 will not be damaged, and the flipping member 400 can withstand an impact with an acceleration of 50G (G is the acceleration of gravity).

[0023] The flipping member 400 can be a screen, a glove box, or any other suitable component. For example, the flipping member 400 can be a screen, which is disposed on the roof of the rear seat. When a rear passenger needs to watch the screen, the screen can be driven by the actuating mechanism 100 to rotate forward to face the passenger. After watching, the passenger can manually rotate the screen backward to make it parallel to the roof to achieve hiding.

[0024] As Figure 2 and Figure 3 As shown in the figure, the clutch mechanism 200 includes an input member 210, a cam 220, and an output member 230. The input member 210 is separably connected to the cam 220, the cam 220 is fixedly connected to the output member 230, and the output member 230 is fixedly connected to the rotating bracket 300. The actuating mechanism 100 is fixedly connected to the input member 210. When the actuating mechanism 100 drives the input member 210 to rotate forward, the input member 210 is connected to the cam 220 and causes the cam 220 to rotate forward together, so that the output member 230 and the rotating bracket 300 rotate forward. At this time, the clutch mechanism 200 is in the engaged state. When the input member 210 or the output member 230 rotates backward, the cam 220 will be disconnected from the input member 210, and the input member 210 (or the cam 220) will rotate backward relative to the cam 220 (or the input member 210), that is, relative rotation will occur between the two. At this time, the clutch mechanism 200 is in the disengaged state.

[0025] Specifically, one end of the input member 210 close to the cam 220 is formed as an input sleeve 211. The cam 220 includes a cam sleeve 221 and a camshaft 222 formed on the cam sleeve 221. The input sleeve 211 is sleeved outside the camshaft 221, and there is a clearance fit between the two. A plurality of wedge-shaped rolling grooves are formed between the cam sleeve 221 and the input sleeve 211. There are rollers 240 in the wedge-shaped rolling grooves. The rollers 240 are respectively in contact with the input sleeve 211 and the cam sleeve 221. When the input member 210 rotates forward, the rollers 240 roll towards the narrower part of the wedge-shaped rolling grooves under the action of friction and are wedged in the rolling grooves, so that the input member 210 drives the cam 220 to rotate forward together to achieve engagement. When the input member 210 rotates reversely, the rollers 240 roll towards the wider part of the wedge-shaped rolling grooves under the action of friction, so that the input member 210 and the cam 220 are separated and relative rotation occurs between the two.

[0026] It can be understood that the clutch mechanism 200 can also adopt any existing suitable overrunning clutch as long as it can achieve forward drive and prevent reverse rotation function.

[0027] An input shaft 212 is formed on the input sleeve 211. The input shaft 212 is connected to the actuator 100 to drive the input shaft 212 to rotate through the actuator 100.

[0028] The output member 230 includes an output sleeve 231 and an output shaft 232 formed on the output sleeve 231. The output shaft 232 is inserted into the cam sleeve 221 and is fixedly connected to the cam sleeve 221 (for example, fixed by interference fit), so as to realize the fixation of the output member 230 and the cam 220.

[0029] One end of the rotating bracket 300 close to the output member 230 is formed as a bracket sleeve 310. The bracket sleeve 310 is sleeved outside the output sleeve 231 and is fixedly connected to the output sleeve 231 (for example, fixed by interference fit), so as to realize the fixation of the rotating bracket 300 and the output member 230.

[0030] The clutch mechanism 200 may further include a first housing 250. The first housing 250 is fixedly connected to the rotating bracket 300 and the input member 210 respectively. The cam 220 is located inside the first housing 250 to shield and protect it through the first housing 250. The input shaft 212 extends into the inner cavity of the first housing 250 and is fixedly connected to the cam sleeve 221 of the cam 220.

[0031] A gasket 251 may be provided between the cam 220 and the inner wall of the first housing 250 to prevent the cam 220 from loosening axially.

[0032] In some embodiments, a damping ring 260 is provided between the rotating bracket 300 and the output member 230 (for example, between the bracket sleeve 310 and the output sleeve 231). When the flip member 400 is subjected to an external force (the external force is in the same direction as the forward rotation of the clutch mechanism 200), the output member 230 is locked and fixed by the output member 210 because it is connected to the output member 210, and the rotating bracket 300 will rotate relative to the output member 210 with the damping ring 260, thereby realizing the collapse function. In this way, when the occupant collides with the flip member 400, there will be no "hard collision" to avoid injuring the person or the flip member 400. During the flipping process, the flip member 400 can be suspended and locked at any position through the damping ring 260 and the clutch mechanism 200, and the flip member 400 will not change its posture due to vibration, thereby realizing the stability of the flip member 400 in 3G bumpy road conditions.

[0033] For example, the damping ring 260 can be sleeved on the outside of the output sleeve 231, and the support sleeve 310 can be sleeved on the outside of the damping ring 260. The output sleeve 231 and the damping ring 260, as well as the damping ring 260 and the support sleeve 310, are all press-fitted into a whole through interference fit. Since the damping ring 260 is in series, it will rotate with the output member 230 and the rotating support 300. Therefore, the actuator 100 does not need to overcome the resistance of the damping ring 260, and its output torque is greater.

[0034] like Figure 4 As shown, the effective torque ratio of the embodiment of the present invention (i.e., the gravity torque of the flipping member 400 / the driving torque of the actuator 100) increases with the increase of the gravity torque of the flipping member 400 (starting from 35%), while the effective torque ratio of the existing parallel damping ring is a fixed value of approximately 30%. Therefore, the flipping drive device of the embodiment of the present invention is suitable for larger and heavier flipping members 400.

[0035] In some embodiments, a polymer coating is provided on the inner side of the damping ring 260. The damping ring 260 may be a metal ring, a rubber ring, a plastic sleeve or any other form of damping structure.

[0036] The output sleeve 231 is sleeved on the outside of the shaft ring 270, and the two can be interference fit. The output member 230 and the rotating bracket 300 are both metal parts, and the shaft ring 270 is a plastic part. When relative movement occurs between the rotating bracket 300 and the output member 230, the shaft ring 270 can avoid friction between the shaft end of the output member 230 and the shaft end of the rotating bracket 300 (friction between metal and metal), thereby reducing damping and noise.

[0037] like Figure 5As shown, the actuator 100 includes a motor 110, a worm 120, a first double gear 130, a second double gear 140, a third double gear 150, and an output gear 160. Among them, the motor 110 is connected to the worm 120, the worm 120 meshes with the first gear of the first double gear 130, the second gear of the first double gear 130 meshes with the first gear (large gear) of the second double gear 140, the second gear (small gear) of the second double gear 140 meshes with the first gear (small gear) of the third double gear 150, the second gear (large gear) of the third double gear 150 meshes with the output gear 160, and the output gear 160 is connected to the input member 210 (such as the input shaft 211) of the clutch mechanism 200. Thus, the driving force of the motor 110 is transmitted to the clutch mechanism 200 through the worm and each gear, and the clutch mechanism 200 and the rotating bracket 300 are driven to rotate. The actuator 100 adopts two-stage double worm and worm gear and two-stage cylindrical gear transmission, with a compact and small structure, which can meet the installation requirements of local small spaces.

[0038] The actuator 100 may further include a second housing 171, a first cover 172, and a second cover 173. The second housing 171 has an inner cavity, and the motor 110, the worm 120, the first double gear 130, the second double gear 140, the third double gear 150, and the output gear 160 are all installed in the inner cavity of the second housing 171. The first cover 172 and the second cover 173 are both connected to the second housing 171 and are used to cover the inner cavity of the second housing 171, so that the motor 110, the worm 120, and each gear are all hidden inside the second housing 171.

[0039] The second housing 171 has an opening at the top and an opening at the side. The first double gear 130 can enter the inner cavity through the opening at the top and is installed in the inner cavity through a sliding bearing 131, a gasket 132, and a snap ring 133; the second double gear 140 is installed in the inner cavity through a gear shaft 141, the third double gear 150 is installed in the inner cavity through a gear shaft 151, the first cover 172 is fixed to the second housing 171 by screws 174, and the second cover 173 is fixed to the second housing 171 by screws 175.

[0040] In the flipping drive device according to the embodiment of the present invention, the clutch mechanism 200 is engaged during forward rotation and disengaged during reverse rotation, enabling the actuator 100 to drive the rotating bracket 300 to rotate forward through the clutch mechanism 200. When the rotating bracket 300 is reversely rotated by an external force, the external force cannot be transmitted to the actuator 100, so the structure of the actuator 100 will not be damaged. The damping ring 260 is disposed between the output member 230 and the rotating bracket 300 and can rotate together with the output member 230 and the rotating bracket 300, so that the actuator 100 does not need to overcome the resistance of the damping ring 260 and has a larger output torque. The actuator 100 adopts two-stage double worm and worm gear and two-stage cylindrical gear transmission, with a compact and small structure, which can meet the installation requirements of a local small space.

[0041] It should be noted that the present invention (such as the inventive concept, etc.) has been described in the specification of this patent document and / or illustrated in the drawings according to exemplary embodiments; the embodiments of the present invention are presented by way of example only and are not intended to limit the scope of the present invention. The structure and / or arrangement of the elements of the inventive concept embodied in the present invention as described in the specification and / or illustrated in the drawings are merely illustrative. Although the exemplary embodiments of the present invention have been described in detail in this patent document, those of ordinary skill in the art can easily understand that equivalents, modifications, variations, etc. of the subject matter of the exemplary embodiments and alternative embodiments are possible and are considered to be within the scope of the present invention; all such subject matter (such as modifications, variations, embodiments, combinations, equivalents, etc.) are intended to be included within the scope of the present invention. It should also be noted that various / other modifications, variations, substitutions, equivalents, changes, omissions, etc. can be made in the configuration and / or arrangement of the exemplary embodiments (such as in terms of concept, design, structure, device, form, assembly, construction, means, function, system, process / method, steps, order of process / method steps, operation, operating conditions, performance, materials, composition, combination, etc.) without departing from the scope of the present invention; all such subject matter (such as modifications, variations, embodiments, combinations, equivalents, etc.) are intended to be included within the scope of the present invention. The scope of the present invention is not intended to be limited to the subject matter described in the specification and / or drawings of this patent document (such as details, structure, function, materials, behavior, steps, order, system, results, etc.). Considering that the claims of this patent document will be properly interpreted to cover the full scope of the subject matter of the present invention (such as including any and all such modifications, variations, embodiments, combinations, equivalents, etc.); it should be understood that the terms used in this patent document are for the purpose of describing the subject matter of the exemplary embodiments and are not intended as a limitation on the scope of the present invention.

[0042] It should also be noted that, according to the exemplary embodiments, the present invention may include conventional technologies (e.g., technologies implemented and / or integrated in the exemplary embodiments, modifications, variations, combinations, equivalents), or may include any other applicable technologies (present and / or future) with the ability to perform the functions and processes / operations described in the specification and / or illustrated in the figures. All such technologies (e.g., technologies implemented in the form of embodiments, modifications, variations, combinations, equivalents, etc.) are considered to be within the scope of the present invention of this patent document.

Claims

1. A flipping drive device, characterized in that, It includes an actuator, a clutch mechanism and a rotating bracket. The actuator is connected to the clutch mechanism, and the clutch mechanism is connected to the rotating bracket. The actuator is used to drive the clutch mechanism to rotate. The clutch mechanism has an engaged state and a disengaged state. When the actuator drives the clutch mechanism to rotate forward, the clutch mechanism is in the engaged state to make the rotating bracket rotate forward. When the rotating bracket rotates reversely under the action of an external force, the clutch mechanism is in the disengaged state to make the rotating bracket rotate reversely relative to the actuator.

2. The flipping drive device according to claim 1, characterized in that, The clutch mechanism includes an input member, a cam and an output member. The input member is detachably connected to the cam, the cam is fixedly connected to the output member, and the output member is connected to the rotating bracket. The actuator is fixedly connected to the input member. When the clutch mechanism is in the engaged state, the input member is connected to the cam. When the clutch mechanism is in the disengaged state, the input member is disconnected from the cam.

3. The flipping drive device according to claim 2, characterized in that, One end of the input member close to the cam is formed as an input sleeve. The cam includes a cam sleeve and a camshaft formed on the cam sleeve. The input sleeve is sleeved outside the camshaft, and the input sleeve is in clearance fit with the camshaft. A plurality of wedge-shaped rolling grooves are formed between the cam sleeve and the input sleeve, and rollers are arranged in the wedge-shaped rolling grooves. The rollers are in contact with the input sleeve and the cam sleeve respectively.

4. The flipping drive device according to claim 3, characterized in that, An input shaft is formed on the input sleeve, and the input shaft is connected to the actuator to drive the input shaft to rotate through the actuator.

5. The flipping drive device according to claim 3, characterized in that, The output member includes an output sleeve and an output shaft formed on the output sleeve. The output shaft is inserted into the cam sleeve and fixedly connected to the cam sleeve.

6. The flipping drive device according to claim 5, characterized in that, One end of the rotating bracket close to the output member is formed as a bracket sleeve, and the bracket sleeve is sleeved outside the output sleeve. The output sleeve is sleeved outside a collar, and the collar is used to avoid friction between the rotating bracket and the output member.

7. The flipping drive device according to claim 2, characterized in that, The clutch mechanism further includes a first box body. The first box body is fixedly connected to the rotating bracket and the input member respectively, and the cam is located inside the first box body. A gasket is provided between the cam and the inner wall of the first box body.

8. The flipping drive device according to claim 2, characterized in that, A damping ring is provided between the rotating bracket and the output member, so that when the actuator drives the clutch mechanism to rotate forward, the rotating bracket and the damping ring rotate forward together with the output member.

9. The flipping drive device according to claim 8, characterized in that, A polymer material coating is provided on the inner side of the damping ring.

10. The flipping drive device according to claim 1, characterized in that, The actuator includes a motor, a worm, a first double gear, a second double gear, a third double gear and an output gear. The motor is connected to the worm. The worm meshes with the first gear of the first double gear. The second gear of the first double gear meshes with the first gear of the second double gear. The second gear of the second double gear meshes with the first gear of the third double gear. The second gear of the third double gear meshes with the output gear. The output gear is connected to the clutch mechanism. The actuator further includes a second box body, a first cover body and a second cover body. The motor, the worm, the first double gear, the second double gear, the third double gear and the output gear are all installed in the second box body. The first cover body and the second cover body are both connected to the second box body for covering the interior of the second box body.

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