Driving unit and flat-out handle

Abstract

The utility model provides a driving unit and a flat-out handle, and belongs to the technical field of automobiles, the driving unit comprises a driver which comprises an output shaft; the operation part comprises an eccentric operation wheel, and the eccentric operation wheel is fixed to the output shaft; the limiting part is fixed to the output shaft, an abutting part is arranged on a first swing arm of the handle, and when the handle is horizontally out of a preset position, the abutting part is connected with the limiting part; when the output shaft rotates in the first direction, the handle begins to be flatly out; when the output shaft rotates in the second direction, the handle is converted into a recovery state from a flat-out state; the device has the advantages that the eccentric operation wheel rotates to drive the first swing arm to work, the handle is controlled to be horizontally ejected or retracted, in order to limit the maximum working stroke of the driver, the limiting part is additionally arranged on the output shaft, the limiting part does not make contact with the abutting part in the horizontal ejection process of the handle, and when the handle is horizontally ejected to the maximum working stroke, the limiting part does not make contact with the abutting part. The abutting part on the first swing arm is connected with the limiting part, the operation stroke of the output shaft is limited, and the service life of the handle is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobiles, and in particular relates to a driving unit and a flat-out handle. Background Art

[0002] Hidden car exterior door handles have the advantages of reducing wind resistance, reducing wind noise and being beautiful, which are more in line with the development of the automobile industry and are increasingly popular with users. For example, patent CN220151121U discloses a flat-out handle with an electric return function, which is provided with a connecting rod mechanism inside, the connecting rod mechanism is connected to both ends of the handle body, and the connecting rod mechanism is driven by an actuator to move, so that the handle body protrudes from a hidden position. However, in the above-mentioned patent, there is no device to limit the maximum working stroke of the handle during the flat-out process. After long-term use, the working accuracy of the actuator may have errors, causing the handle to retract after being flat-out to the maximum engineering stroke, or directly causing damage to the entire handle, resulting in a poor user experience for customers. Utility Model Content

[0003] The utility model aims to solve the above problems in the prior art and proposes a driving unit which can limit the maximum horizontal travel of the handle.

[0004] The purpose of the utility model can be achieved through the following technical solutions: a driving unit, comprising:

[0005] A driver including an output shaft;

[0006] An operating part, comprising an eccentric operating wheel, wherein the eccentric operating wheel is fixed to the output shaft;

[0007] A limiting part is fixed on the output shaft, and an abutting part is arranged on the first swing arm of the handle, and when the handle is extended to a preset position, the abutting part is connected with the limiting part;

[0008] Wherein, when the output shaft rotates in the first direction, the handle begins to extend horizontally;

[0009] When the output shaft rotates along the second direction, the handle changes from the extended state to the retracted state.

[0010] In the above-mentioned driving unit, a rotating wheel is fixedly provided on the output shaft, the limiting portion is located on the outer circumferential surface of the rotating wheel, the abutting portion is hinged to the first swing arm, and an elastic member is provided between the abutting portion and the first swing arm, and a limiting groove is provided on the abutting portion, and when the handle is extended horizontally to a preset position, the limiting portion extends into the limiting groove.

[0011] In the above-mentioned driving unit, along the second rotation direction of the output shaft, the linear distance between the outer circumferential surface of the rotating wheel and the output shaft gradually decreases, so that the end of the rotating wheel with the largest linear distance to the output shaft forms a limiting portion.

[0012] In the above-mentioned driving unit, the swing speed of the first swing arm is greater than the swing speed of the abutting portion.

[0013] In the above-mentioned driving unit, a transmission gear is fixedly arranged on the output shaft, a worm is transmission-arranged on the driver, and the worm is meshed with the transmission gear.

[0014] A flat-out handle comprises the above-mentioned driving unit.

[0015] In the above-mentioned flat-out handle, it also includes a handle and a base, the handle can be flat relative to the base, and the first swing arm and the second swing arm are respectively provided at both ends of the handle, the first swing arm and the second swing arm are transmitted through a synchronization rod, and the first swing arm and the second swing arm are respectively hinged to the base, the first swing arm is provided with an execution wheel, as the eccentric operating wheel rotates, the execution wheel abuts against the outer peripheral surface of the eccentric operating wheel, and the abutting portion is hingedly provided on the first swing arm; a reset member is provided between the second swing arm and the base.

[0016] In the above-mentioned flat-out handle, an abutment surface extending toward the output shaft is provided on the outer peripheral surface of the eccentric operating wheel at the maximum linear distance from the output shaft, and the abutment groove is provided on the abutment surface.

[0017] In the above-mentioned flat-out handle, a connecting block is arranged on the second swing arm, a waist-shaped hole is arranged on the first end of the synchronization rod, and the connecting block extends into the waist-shaped hole.

[0018] In the above-mentioned flat-out handle, a counterweight block is fixedly provided on the second swing arm.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] (1) The eccentric operating wheel rotates to drive the first swing arm to operate, controlling the handle to extend or retract. In order to limit the maximum working stroke of the driver, a limiting portion is added to the output shaft. During the extension of the handle, the limiting portion and the abutting portion do not contact each other. When the handle is extended to the maximum working stroke, the abutting portion on the first swing arm is connected to the limiting portion, thereby limiting the operating stroke of the output shaft and increasing the service life of the handle.

[0021] (2) During the horizontal extension of the handle, the trajectory is smooth, the thrust is consistent, and the dynamic balance is good; and the transmission between the worm and the transmission gear can withstand a higher load. Even if the handle is frozen in winter, there is enough force to break the ice and allow the handle to be extended horizontally. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the handle;

[0023] Figure 2 yes Figure 1 Schematic diagram of the internal structure;

[0024] Figure 3 is a schematic diagram of the connection between the limiting portion and the abutting portion;

[0025] Figure 4 It is a schematic diagram of the connection between the drive unit and the handle;

[0026] Figure 5 This is a schematic diagram of the handle state when the driver is not working;

[0027] Figure 6 This is a schematic diagram of the state after the driver drives the handle to extend horizontally;

[0028] Figure 7 This is a schematic diagram of the state after the handle is extended horizontally;

[0029] Figure 8 This is a schematic diagram of the exploded connection between the handle and the base.

[0030] In the figure, there are driver 100; output shaft 101; operating part 200; eccentric operating wheel 201; limiting part 202; rotating wheel 203; worm 204; transmission gear 205; abutment part 206; abutment groove 207; elastic member 208; connecting part 209; handle 300; base 301; first swing arm 302; second swing arm 303; synchronization rod 304; execution wheel 305; reset member 306; abutment groove 307; connecting block 308; waist-shaped hole 309; limiting block 310; counterweight block 311. DETAILED DESCRIPTION

[0031] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0032] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0033] like Figure 1 and Figure 2 As shown, a driving unit comprises:

[0034] The driver 100 comprises an output shaft 101;

[0035] An operating part, comprising an eccentric operating wheel 201, wherein the eccentric operating wheel 201 is fixed to the output shaft 101;

[0036] The limiting portion 202 is fixed on the output shaft 101. The first swing arm 302 of the handle 300 is provided with an abutting portion 206. When the handle 300 is extended to a preset position, the abutting portion 206 is connected to the limiting portion 202.

[0037] When the output shaft 101 rotates in the first direction, the handle 300 begins to extend horizontally;

[0038] When the output shaft 101 rotates in the second direction, the handle 300 changes from the extended state to the retracted state.

[0039] In this embodiment, the eccentric operating wheel 201 rotates to drive the first swing arm 302 to control the handle 300 to be extended or retracted. In order to limit the maximum working stroke of the driver 100, a limiting portion 202 is added to the output shaft 101. During the extension of the handle 300, the limiting portion 202 is not in contact with the abutment portion 206. When the handle 300 is extended to the maximum working stroke, the abutment portion 206 on the first swing arm 302 is connected to the limiting portion 202, thereby limiting the operating stroke of the output shaft 101 and increasing the service life of the handle 300.

[0040] Further preferably, a rotating wheel 203 is fixedly provided on the output shaft 101, the limiting portion 202 is located on the outer circumferential surface of the rotating wheel 203, the abutting portion 206 is hinged to the first swing arm 302, and an elastic member 208 is provided between the abutting portion 206 and the first swing arm 302, and a limiting groove 207 is provided on the abutting portion 206, and when the handle 300 is flattened to a preset position, the limiting portion 202 extends into the limiting groove 207.

[0041] In this embodiment, the setting of the elastic member 208 between the abutment portion 206 and the first swing arm 302 allows the elastic member 208 to be compressed when the first swing arm 302 drives the handle 300 to extend horizontally. When the handle 300 is reset, the reset of the compressed elastic member 208 will drive the first swing arm 302 to reset, and cooperate with the reset torsion spring on the second swing arm 303 to provide double reset protection; and the setting of the elastic member 208 can also ensure that the limiting portion 202 remains in a stable state after extending into the limiting groove 207.

[0042] Specifically, along the second rotation direction of the output shaft 101 , the linear distance between the outer circumferential surface of the rotating wheel 203 and the output shaft 101 gradually decreases, so that the end of the rotating wheel 203 with the largest linear distance to the output shaft 101 forms a limiting portion 202 .

[0043] Further preferably, the swing speed of the first swing arm 302 is greater than the swing speed of the abutting portion 206 .

[0044] In this embodiment, along the second rotation direction of the output shaft 101, the linear distance between the outer circumferential surface and the axis of the output shaft 101 gradually decreases, so the outer circumferential surface of the rotating wheel 203 at the maximum linear distance from the output shaft 101 will protrude from the outer circumferential surfaces at other positions on the rotating wheel 203 to form a limiting portion 202. Under the elastic force of the elastic member 208, as the output shaft 101 rotates along the first direction, the abutting portion 206 maintains abutment with the rotating wheel 203 until the handle 300 is flattened to the preset position, the output shaft 101 stops rotating, and the limiting portion 202 extends into the limiting groove 207 on the abutting portion 206. At this time, the limiting portion 202 and the limiting groove 207 are in contact with each other. 07 do not contact each other, leaving a certain redundant space. When the output shaft 101 wants to continue to rotate, the limit part 202 abuts against the groove wall of the limit groove 207; because during the rotation of the rotating wheel 203, the abutment point of the abutment part 206 and the rotating wheel 203 may change, causing the abutment part 206 to swing, so in the present application, the change amplitude of the outer peripheral surface of the rotating wheel 203 is set to be smaller, so that the swing speed of the first swing arm 302 abutting against the eccentric operating wheel 201 is faster than the swing speed of the abutment part 206, and there is a speed difference between the two. Then, during the swinging process of the first swing arm 302 and the abutment part 206, the compression force of the elastic member 208 gradually increases.

[0045] Further preferably, a transmission gear 205 is fixedly disposed on the output shaft 101 , and a worm 204 is transmission-disposed on the driver 100 , and the worm 204 is meshed with the transmission gear 205 .

[0046] In this embodiment, in order to make the structure of the entire drive unit more compact, the driver 100 is arranged on the side of the actuator, and the plane where the length extension direction of the driver 100 is located is parallel to the plane where the swing direction of the first swing arm 302 is located. Therefore, it is necessary to use the worm 204 and the transmission gear 205 to cooperate to reverse the output force. During the horizontal extension process of the handle 300, the trajectory is smooth, the thrust is consistent, and the dynamic balance is good; and the transmission between the worm 204 and the transmission gear 205 can withstand a higher load. Even if the handle 300 is frozen in winter, there is enough force to break the ice layer to allow the handle 300 to be horizontally extended.

[0047] A flat-out handle 300 comprises the above-mentioned driving unit.

[0048] Further preferably, it also includes a handle 300 and a base 301. The handle 300 can be flat relative to the base 301, and the first swing arm 302 and the second swing arm 303 are respectively provided at both ends of the handle 300. The first swing arm 302 and the second swing arm 303 are transmitted through a synchronization rod 304, and the first swing arm 302 and the second swing arm 303 are respectively hinged to the base 301. An executing wheel 305 is provided on the first swing arm 302. As the eccentric operating wheel 201 rotates, the executing wheel 305 abuts against the outer peripheral surface of the eccentric operating wheel 201, and the abutting portion 206 is hingedly provided on the first swing arm 302; a reset member 306 is provided between the second swing arm 303 and the base 301.

[0049] Specifically, the reset member 306 between the second swing arm 303 and the base 301 includes a reset torsion spring, and the two ends of the reset torsion spring are respectively abutted against the base 301 and the second swing arm 303; the elastic member 208 includes two elastic torsion springs, and a connecting portion 209 is integrally provided on the abutting portion 206, and the two elastic torsion springs are respectively located on both sides of the abutting portion 206, one end of the two elastic torsion springs is abutted against the first swing arm 302, and the other end is respectively abutted against the connecting portion 209, and the other ends of the two elastic torsion springs are fixed to each other.

[0050] In this embodiment, the abutment between the execution wheel 305 and the eccentric operating wheel 201 causes the eccentric operating wheel 201 to control the first swing arm 302 to start swinging when the output shaft 101 rotates along the first direction, and the second swing arm 303 swings synchronously with the first swing arm 302, and the control handle 300 is extended horizontally. At this time, the elastic member 208 and the reset torsion spring are both compressed; when the output shaft 101 reverses, under the elastic force of the elastic member 208 and the reset torsion spring, the first swing arm 302 and the second swing arm 303 are reset synchronously.

[0051] Further preferably, an abutment surface is provided on the outer peripheral surface at the maximum straight-line distance between the eccentric operating wheel 201 and the output shaft 101 in the direction toward the output shaft 101 , and an abutment groove 307 is provided on the abutment surface.

[0052] In the present embodiment, under the action of the elastic member 208 and the reset torsion spring, the first swing arm 302 and the second swing arm 303 can be reset synchronously, and as the first swing arm 302 and the second swing arm 303 are gradually reset, the elastic force of the elastic member 208 and the reset torsion spring gradually decreases, and the setting of the abutment groove 307 makes it possible for the abutment groove 307 to abut against the execution wheel 305 when the eccentric operating wheel 201 rotates along the second direction, which will drive the execution wheel 305 to reset, thereby also driving the first swing arm 302 and the second swing arm 303 to reset. If there is an ice layer between the handle 300 and the vehicle door, the abutment force of the eccentric operating wheel 201 can also crush the ice layer so that the handle 300 can be smoothly retracted; and the abutment setting of the abutment groove 307 and the execution wheel 305 can also ensure that the handle 300 remains hidden in the vehicle door.

[0053] Further preferably, a connecting block 308 is provided on the second swing arm 303 , a waist-shaped hole 309 is provided on the first end of the synchronization rod 304 , and the connecting block 308 extends into the waist-shaped hole 309 .

[0054] In this embodiment, after the door handle 300 pops out, the finger is put into the door handle 300, and the door handle 300 rotates around the swing axis of the second swing arm 303. The setting of the waist-shaped hole 309 allows a certain amount of movable space to be left between the second swing arm 303 and the synchronization rod 304, thereby preventing the synchronization rod 304 and the second swing arm 303 from getting stuck.

[0055] It is worth mentioning that a limit block 310 is also provided on the connection block 308 , and the limit block 310 abuts against the outer wall of the synchronization rod 304 to prevent the connection between the connection block 308 and the synchronization rod 304 from being disconnected.

[0056] Specifically, a waist-shaped groove is also provided on the frame of the handle, and the end of the second swing arm 303 extends into the waist-shaped groove. When it is extended horizontally, the end of the second swing arm 303 abuts against the groove wall of the waist-shaped groove, pushing the handle 300 to move. When the car door is opened, the end of the second swing arm 303 moves in the waist-shaped groove.

[0057] Further preferably, a counterweight block 311 is fixedly provided on the second swing arm 303 to meet the inertial force requirement by changing the center of mass position.

[0058] It should be noted that in the present utility model, descriptions such as "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. The terms "connected", "fixed", etc. should be understood in a broad sense. For example, "fixed" can be a fixed connection, a detachable connection, or an integral whole; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0059] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0060] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A drive unit, characterized in that: include: A driver including an output shaft; An operating part, comprising an eccentric operating wheel, wherein the eccentric operating wheel is fixed to the output shaft; A limiting part is fixed on the output shaft, and an abutting part is arranged on the first swing arm of the handle, and when the handle is extended to a preset position, the abutting part is connected with the limiting part; Wherein, when the output shaft rotates in the first direction, the handle begins to extend horizontally; When the output shaft rotates in the second direction, the handle changes from the extended state to the retracted state.

2. A drive unit according to claim 1, characterized in that: A rotating wheel is fixedly arranged on the output shaft, the limiting portion is located on the outer circumferential surface of the rotating wheel, the abutting portion is hinged to the first swing arm, and an elastic member is arranged between the abutting portion and the first swing arm, and a limiting groove is arranged on the abutting portion. When the handle is extended horizontally to a preset position, the limiting portion extends into the limiting groove.

3. A drive unit according to claim 2, characterized in that: Along the second rotation direction of the output shaft, the linear distance between the outer circumferential surface of the rotating wheel and the output shaft gradually decreases, so that the end of the rotating wheel with the largest linear distance to the output shaft forms a limiting portion.

4. A drive unit according to claim 2 or 3, characterized in that: The swing speed of the first swing arm is greater than the swing speed of the abutting portion.

5. A driving unit according to claim 1, characterized in that: A transmission gear is fixedly arranged on the output shaft, a worm is transmission-arranged on the driver, and the worm is meshed with the transmission gear.

6. A flat handle, characterized in that: The invention comprises a driving unit as claimed in any one of claims 1 to 5.

7. The flat handle according to claim 6, characterized in that: The invention also includes a handle and a base, wherein the handle can be flat relative to the base, and a first swing arm and a second swing arm are respectively provided at both ends of the handle, and the first swing arm and the second swing arm are transmitted through a synchronization rod, and the first swing arm and the second swing arm are respectively hinged to the base, and an execution wheel is provided on the first swing arm, and as the eccentric operating wheel rotates, the execution wheel abuts against the outer peripheral surface of the eccentric operating wheel, and the abutting portion is hingedly provided on the first swing arm; a reset member is provided between the second swing arm and the base.

8. The flat handle according to claim 7, characterized in that: An abutment surface extending toward the output shaft is arranged on the outer peripheral surface of the eccentric operating wheel at the maximum linear distance from the output shaft, and an abutment groove is arranged on the abutment surface.

9. The flat handle according to claim 7, characterized in that: The second swing arm is provided with a connecting block, the first end of the synchronization rod is provided with a waist-shaped hole, and the connecting block extends into the waist-shaped hole.

10. The flat handle according to claim 7, characterized in that: A counterweight is fixedly arranged on the second swing arm.

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