阅读说明：本技术 滑门驱动装置 (Sliding door driving device ) 是由 林志颖 于 2020-03-19 设计创作，主要内容包括：本发明提供一种滑门驱动装置,滑门驱动装置包括基座、第一滑轨、第一连杆、第二连杆、浮动轨、第一转轮、第二转轮、回复件、第一限位件及滑门,当驱动第一连杆和第二连杆的其中之一时,第一连杆和第二连杆的其中之一带动浮动轨运动使第二转轮沿第一方向运动使第二转轮远离第一转轮,第二转轮沿第一方向运动至脱离第一限位件后在回复件的回复力作用下第二转轮沿第二方向自浮动轨的第一端运动至浮动轨的第二端,第二转轮运动带动第一转轮于第一滑轨移动以带动滑门沿第三方向移动,如此,能够在受初始外力后可自行开门或关门且避免开门或关门过程中出现卡住的问题。(The invention provides a sliding door driving device, which comprises a base, a first sliding rail, a first connecting rod, a second connecting rod, a floating rail, a first rotating wheel, a second rotating wheel, a restoring piece, a first limiting piece and a sliding door, when one of the first connecting rod and the second connecting rod is driven, one of the first connecting rod and the second connecting rod drives the floating rail to move so that the second rotating wheel moves along the first direction to enable the second rotating wheel to be far away from the first rotating wheel, the second rotating wheel moves along the first direction to be separated from the first limiting piece, then the second rotating wheel moves to the second end of the floating rail from the first end of the floating rail along the second direction under the action of restoring force of the restoring piece, the second rotating wheel moves to drive the first rotating wheel to move on the first sliding rail so as to drive the sliding door to move along the third direction, so, can be by oneself open the door or close the door and avoid opening the door or the problem that the in-process of closing the door appears blocking after receiving initial external force.)

1. A sliding door drive apparatus, comprising:

a base;

the first sliding rail is arranged on the base;

the first connecting rod is pivoted to the base;

the second connecting rod is pivoted to the base;

the first end of the floating rail is pivoted with the first connecting rod, and the second end of the floating rail is pivoted with the second connecting rod;

the first rotating wheel is arranged on the first sliding rail;

the second rotating wheel is arranged on the floating rail;

a restoring member connecting the first rotating wheel and the second rotating wheel;

the first limiting piece is arranged on the base; and

a sliding door connected with the first rotating wheel;

when one of the first connecting rod and the second connecting rod is driven, one of the first connecting rod and the second connecting rod drives the floating rail to move so that the second rotating wheel moves along a first direction to enable the second rotating wheel to be far away from the first rotating wheel, the second rotating wheel moves along a second direction from the first end of the floating rail to the second end of the floating rail under the action of restoring force of the restoring piece after moving along the first direction to be separated from the first limiting piece, the first rotating wheel is driven to move on the first sliding rail by the motion of the second rotating wheel so as to drive the sliding door to move along a third direction, the direction of the second rotating wheel far away from the first rotating wheel is the first direction, and the direction from the first end of the floating rail to the second end of the floating rail is the second direction.

2. The sliding door driving device according to claim 1, further comprising a second limiting member disposed on the base, wherein when one of the first connecting rod and the second connecting rod is driven, one of the first connecting rod and the second connecting rod drives the floating rail to move so that the second wheel moves along the first direction to move away from the first wheel, the second wheel moves along the first direction to disengage from the second limiting member and then moves along the second direction from the second end of the floating rail to the first end of the floating rail under the restoring force of the restoring member, and the second wheel drives the first wheel to move along the first sliding rail so as to drive the sliding door to move along the third direction.

3. The sliding door drive apparatus according to claim 2, wherein when the second wheel is located on the first position-limiting member, the first position-limiting member prevents the second wheel from moving in the second direction; when the second rotating wheel is located on the second limiting member, the second limiting member prevents the second rotating wheel from moving in the reverse direction along the second direction.

4. The sliding door driving device as claimed in claim 1, further comprising a first stopping portion and a second stopping portion, wherein the first stopping portion is disposed at the first end of the floating track, the second stopping portion is disposed at the second end of the floating track, when the second wheel moves from the first end of the floating track to the second end of the floating track along the second direction, the second stopping portion limits the second wheel to continue moving along the second direction, so that the sliding door stops moving along the third direction; when the second wheel moves from the second end of the floating rail to the first end of the floating rail in the direction opposite to the second direction, the first stopping portion limits the second wheel to continue moving in the direction opposite to the second direction, so that the sliding door stops moving in the direction opposite to the third direction.

5. The sliding door driving device as claimed in claim 4, wherein the first stopping portion extends arcuately away from the first track from the first end of the floating track to form a first arcuately-shaped stopping portion, the second stopping portion extends arcuately away from the first track from the second end of the floating track to form a second arcuately-shaped stopping portion, and when the second wheel moves from the first end of the floating track to the second end of the floating track in the second direction, the second wheel stops moving in the second direction at the first arcuately-shaped stopping portion to stop the sliding door from moving in the third direction; when the second wheel moves from the second end of the floating rail to the first end of the floating rail in the reverse direction of the second direction, the second wheel stops moving in the reverse direction of the second direction at the second arc-shaped stopping portion, so that the sliding door stops moving in the reverse direction of the third direction.

6. The sliding door driving apparatus according to claim 1, wherein the first link, the floating rail, the second link and the first sliding rail form a quadrilateral, two inner corners of the quadrilateral are a first angle and a second angle, the first angle is an angle formed by the first link and the first sliding rail, the second angle is an angle formed by the second link and the first sliding rail, and when one of the first link and the second link is driven, the first angle is increased or decreased.

7. The sliding door drive apparatus as claimed in claim 1, wherein the sliding door drive apparatus has an initial state, in which the first end of the floating rail is closest to the first track, the second end of the floating rail is farthest from the first track, and the second wheel is located at the first end of the floating rail.

8. The sliding door driving device as claimed in claim 7, wherein the distance between the axis of the first wheel and the axis of the second wheel is a first distance, and when the sliding door driving device is in the initial state, the distance between the axis of the first wheel and the axis of the second wheel is an initial distance; when the first external force acts on one of the first connecting rod and the second connecting rod, the first distance is increased and is larger than the initial distance; when the second rotating wheel moves to the second end of the floating rail from being separated from the first limiting piece, the first distance is reduced.

9. The sliding door drive apparatus of claim 1, further comprising an operating member coupled to one of the first link and the second link, the operating member being operated to drive the one of the first link and the second link.

10. The sliding door driving device according to claim 1, further comprising a sliding member and a sliding sleeve, wherein the sliding member has a third end and a fourth end, the third end is opposite to the fourth end, the first wheel is pivotally connected to the third end of the sliding member, the sliding sleeve is slidably disposed at the fourth end of the sliding member, the second wheel is pivotally connected to the sliding sleeve, one end of the restoring member is disposed at the third end of the sliding member, the other end of the restoring member is disposed at the sliding sleeve, when one of the first connecting rod and the second connecting rod drives the floating track to move the second wheel along the first direction, the second wheel drives the sliding sleeve to move along the first direction, the restoring force of the restoring member increases, the second wheel moves along the first direction to disengage from the first position-limiting member, and then moves along the second direction from the first end of the floating track to the second end of the floating track, the second rotating wheel moves to drive the sliding sleeve to move in the reverse direction of the first direction and the sliding part to move in the third direction, and the sliding part drives the first rotating wheel to move on the first sliding rail under the action of the restoring force of the restoring part so as to drive the sliding door to move in the third direction.

11. The sliding door driving device as claimed in claim 10, further comprising a second track and an actuating rod, wherein the sliding door is disposed on the second track, the actuating rod connects the sliding door to the sliding member, and when the sliding member moves along the third direction, the sliding member actuates the sliding door to move along the third direction on the second track through the actuating rod.

Technical Field

The present invention relates to a sliding door driving device, and more particularly, to a sliding door driving device capable of automatically opening or closing a door when an initial external force is applied to the sliding door.

Background

At present, when a sliding door of a semi-automatic driving device is close to a first side, the acting force of a spring pushes the sliding door towards the first side; when the sliding door is close to the second side, the force of the spring pushes the sliding door towards the second side. The spring is arranged between the first side and the second side, the neutral point is arranged in the stroke, the spring accumulates the most elastic potential energy at the neutral point, but the force application direction of the spring cannot push the sliding door, namely, the force is not applied to the first side or the second side, so that the sliding door is clamped at the neutral point and cannot move.

The moment of the spring in the moving direction of the sliding door is the minimum and the friction force of the mechanism is the maximum near the neutral point because the force of the spring is in the switching direction, so that if a user just pushes the sliding door to be near the neutral point, the sliding door is easy to be blocked and cannot move, and the sliding door does not move towards the first side or the second side.

Therefore, there is a need for a new sliding door driving device to overcome the above-mentioned drawbacks.

Disclosure of Invention

The invention aims to provide a sliding door driving device which can automatically open or close a door after initial external force is applied and avoid the problem of jamming in the process of opening or closing the door.

To achieve the above object, the present invention provides a sliding door driving apparatus, comprising: a base; the first sliding rail is arranged on the base; the first connecting rod is pivoted to the base; the second connecting rod is pivoted to the base; the first end of the floating rail is pivoted with the first connecting rod, and the second end of the floating rail is pivoted with the second connecting rod; the first rotating wheel is arranged on the first sliding rail; the second rotating wheel is arranged on the floating rail; a restoring member connecting the first rotating wheel and the second rotating wheel; the first limiting piece is arranged on the base; the sliding door is connected with the first rotating wheel; when one of the first connecting rod and the second connecting rod is driven, one of the first connecting rod and the second connecting rod drives the floating rail to move so that the second rotating wheel moves along a first direction to enable the second rotating wheel to be far away from the first rotating wheel, the second rotating wheel moves along a second direction from the first end of the floating rail to the second end of the floating rail under the action of restoring force of the restoring piece after moving along the first direction to be separated from the first limiting piece, the first rotating wheel is driven to move on the first sliding rail by the motion of the second rotating wheel so as to drive the sliding door to move along a third direction, the direction of the second rotating wheel far away from the first rotating wheel is the first direction, and the direction from the first end of the floating rail to the second end of the floating rail is the second direction.

Preferably, the sliding door further comprises a second limiting member disposed on the base, when one of the first connecting rod and the second connecting rod is driven, one of the first connecting rod and the second connecting rod drives the floating rail to move so that the second rotating wheel moves along the first direction to make the second rotating wheel away from the first rotating wheel, the second rotating wheel moves along the first direction to disengage from the second limiting member, then the restoring force of the restoring member moves the second rotating wheel along the second direction from the second end of the floating rail to the first end of the floating rail, and the second rotating wheel drives the first rotating wheel to move along the first sliding rail so as to drive the sliding door to move along the third direction.

Preferably, when the second rotating wheel is located on the first position-limiting member, the first position-limiting member prevents the second rotating wheel from moving along the second direction; when the second rotating wheel is located on the second limiting member, the second limiting member prevents the second rotating wheel from moving in the reverse direction along the second direction.

Preferably, the sliding door further comprises a first stopping portion and a second stopping portion, the first stopping portion is disposed at the first end of the floating rail, the second stopping portion is disposed at the second end of the floating rail, and when the second rotating wheel moves from the first end of the floating rail to the second end of the floating rail along the second direction, the second stopping portion limits the second rotating wheel to continue moving along the second direction, so that the sliding door stops moving along the third direction; when the second wheel moves from the second end of the floating rail to the first end of the floating rail in the direction opposite to the second direction, the first stopping portion limits the second wheel to continue moving in the direction opposite to the second direction, so that the sliding door stops moving in the direction opposite to the third direction.

Preferably, the first stopping portion extends from the first end of the floating rail away from the first sliding rail in an arc shape to form a first arc-shaped stopping portion, the second stopping portion extends from the second end of the floating rail away from the first sliding rail in an arc shape to form a second arc-shaped stopping portion, and when the second rotating wheel moves from the first end of the floating rail to the second end of the floating rail in the second direction, the second rotating wheel stops moving at the first arc-shaped stopping portion in the second direction, so that the sliding door stops moving in the third direction; when the second wheel moves from the second end of the floating rail to the first end of the floating rail in the reverse direction of the second direction, the second wheel stops moving in the reverse direction of the second direction at the second arc-shaped stopping portion, so that the sliding door stops moving in the reverse direction of the third direction.

Preferably, the first connecting rod, the floating rail, the second connecting rod and the first sliding rail form a quadrilateral, two inner angles of the quadrilateral are a first included angle and a second included angle, the first included angle is an included angle formed by the first connecting rod and the first sliding rail, the second included angle is an included angle formed by the second connecting rod and the first sliding rail, and when one of the first connecting rod and the second connecting rod is driven, the first included angle is increased or decreased accordingly.

Preferably, the sliding door driving device has an initial state, in the initial state, the first end of the floating rail is closest to the first sliding rail, the second end of the floating rail is farthest from the first sliding rail, and the second rotating wheel is located at the first end of the floating rail.

Preferably, the distance between the axis of the first rotating wheel and the axis of the second rotating wheel is a first distance, and when the sliding door driving device is in the initial state, the distance between the axis of the first rotating wheel and the axis of the second rotating wheel is an initial distance; when the first external force acts on one of the first connecting rod and the second connecting rod, the first distance is increased and is larger than the initial distance; when the second rotating wheel moves to the second end of the floating rail from being separated from the first limiting piece, the first distance is reduced.

Preferably, the operating device is connected to one of the first link and the second link, and the operating device is operated to drive the one of the first link and the second link.

Preferably, the sliding device further comprises a sliding member and a sliding sleeve, the sliding member has a third end and a fourth end, the third end is opposite to the fourth end, the first rotating wheel is pivoted to the third end of the sliding member, the sliding sleeve is slidably disposed at the fourth end of the sliding member in a limited manner, the second rotating wheel is pivoted to the sliding sleeve, one end of the restoring member is disposed at the third end of the sliding member, the other end of the restoring member is disposed at the sliding sleeve, when one of the first connecting rod and the second connecting rod drives the floating rail to move so that the second rotating wheel moves along the first direction, the second rotating wheel drives the sliding sleeve to move along the first direction, the restoring force of the restoring member increases, the second rotating wheel moves along the first direction to be separated from the first limiting member, and then moves along the second direction from the first end of the floating rail to the second end of the floating rail under the restoring force of the restoring member, the second rotating wheel moves to drive the sliding sleeve to move in the reverse direction of the first direction and the sliding piece to move in the third direction, and the sliding piece drives the first rotating wheel to move on the first sliding rail to drive the sliding door to move in the third direction.

Preferably, the sliding door further comprises a second sliding rail and a driving rod, the sliding door is disposed on the second sliding rail, the driving rod connects the sliding door with the sliding member, and when the sliding member moves along the third direction, the sliding member drives the sliding door to move along the third direction on the second sliding rail through the driving rod.

Compared with the prior art, the sliding door driving device provided by the embodiment of the invention comprises a base, a first sliding rail, a first connecting rod, a second connecting rod, a floating rail, a first rotating wheel, a second rotating wheel, a restoring piece, a first limiting piece and a sliding door, wherein the first sliding rail is arranged on the base, the first connecting rod is pivoted on the base, the second connecting rod is pivoted on the base, the floating rail is provided with a first end and a second end, the first end is opposite to the second end, the first end of the floating rail is pivoted with the first connecting rod, the second end of the floating rail is pivoted with the second connecting rod, the first rotating wheel is arranged on the first sliding rail, the second rotating wheel is arranged on the floating rail, the restoring piece connects the first rotating wheel with the second rotating wheel, the first limiting piece is arranged on the base, and the sliding door is connected with the first rotating wheel, when one of the first connecting rod and the second connecting rod is driven, one of the first connecting rod and the second connecting rod drives the floating rail to move the second rotating wheel along the first direction to enable the second rotating wheel to be far away from the first rotating wheel, the second rotating wheel moves along a first direction to a position separated from the first locating part, and then moves from the first end of the floating rail to the second end of the floating rail under the action of restoring force of the restoring part, the second rotating wheel drives the first rotating wheel to move in the first sliding rail so as to drive the sliding door to move along a third direction, the direction of the second rotating wheel far away from the first rotating wheel is the first direction, and the direction from the first end of the floating rail to the second end of the floating rail is the second direction.

Drawings

Fig. 1 is a schematic perspective view of a sliding door driving device according to an embodiment of the present invention;

FIG. 2 is a schematic view of another perspective of a sliding door driving device according to an embodiment of the present invention;

FIG. 3 is an exploded view of a sliding door actuator according to an embodiment of the present invention;

FIG. 4 is a schematic view of a second roller of the sliding door drive apparatus at a first end of the floating rail according to an embodiment of the present invention;

fig. 5 is a schematic view illustrating a second wheel of the sliding door driving device according to an embodiment of the invention before the second wheel is disengaged from the first position-limiting member;

fig. 6 is a schematic view illustrating a second wheel of the sliding door driving device according to an embodiment of the invention being separated from a first limiting member;

FIG. 7 is a schematic view illustrating a transition state of the second roller of the sliding door driving apparatus between the first end and the second end of the floating rail according to an embodiment of the present invention;

fig. 8 is a schematic view of a second roller of the sliding door driving device at a second end of the floating rail according to an embodiment of the present invention.

Detailed Description

In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.

Referring to fig. 1, fig. 2 and fig. 3, fig. 1 is a schematic perspective view of a sliding door driving device according to an embodiment of the present invention, fig. 2 is a schematic view of another perspective view of the sliding door driving device according to the embodiment of the present invention, and fig. 3 is an exploded schematic view of the sliding door driving device according to the embodiment of the present invention. The sliding door driving device 100 according to an embodiment of the present invention includes a base 1, a first sliding track 2, a first connecting rod 31, a second connecting rod 32, a floating track 4, a first rotating wheel 51, a second rotating wheel 52, a restoring element 6, a first limiting element 71 and a sliding door 81, wherein the first sliding track 2 is disposed on the base 1, the first connecting rod 31 is pivoted to the base 1, the second connecting rod 32 is pivoted to the base 1, the floating track 4 has a first end 41 and a second end 42, the first end 41 is opposite to the second end 42, the first end 41 of the floating track 4 is pivoted to the first connecting rod 31, the second end 42 of the floating track 4 is pivoted to the second connecting rod 32, the first rotating wheel 51 is disposed on the first sliding track 2, the second rotating wheel is disposed on the floating track 4, the restoring element 6 connects the first rotating wheel 51 to the second rotating wheel 52, the first limiting element 71 is disposed on the base 1, and the sliding door 81 is connected to the first rotating wheel 51, when one of the first connecting rod 31 and the second connecting rod 32 is driven, one of the first link 31 and the second link 32 drives the floating rail 4 to move so that the second wheel 52 moves along the first direction 1001 so that the second wheel 52 moves away from the first wheel 51, the second wheel 52 moves along the first direction 1001 until being separated from the first stopper 71, the second wheel 52 moves along the second direction 1002 from the first end 41 of the floating rail 4 to the second end 42 of the floating rail 4, the second wheel 52 moves under the action of the restoring force of the restoring member 6 so as to drive the first wheel 51 to move on the first sliding rail 2 so as to drive the sliding door 81 to move along the third direction 1003, the direction of the second wheel 52 away from the first wheel 51 is the first direction 1001, the direction from the first end 41 of the floating rail 4 to the second end 42 of the floating rail 4 is the second direction 1002, when the floating rail 4 moves relative to the base 1, the second direction 1002 also changes with the position change of the floating rail, so that after the initial external force is applied by the user and enough elastic energy is accumulated, the semi-automatic sliding door mechanism can avoid the problem that the door is clamped in the middle due to the neutral point of the spring direction when the door is pushed to be close to a half by the traditional semi-automatic sliding door mechanism, the sliding force for pushing the sliding door to slide in the whole sliding stroke of the sliding door is close to uniform, the stopping part is matched at the tail end of the stroke to generate buffering and speed reduction on the pulley, and the impact force of the sliding door driving device can be reduced so as to prolong the service life of each relevant part.

Next, the structure and the position relationship of the base 1, the first slide rail 2, the first connecting rod 31, the second connecting rod 32, the floating rail 4, the first rotating wheel 51, the second rotating wheel 52, the restoring member 6, the first limiting member 71 and the sliding door 81 will be described.

Referring to fig. 1, 2 and 3, the base 1 has a first surface 11 and a second surface 12, and the first surface 11 is opposite to the second surface 12. The first surface 11 of the base 1 is provided with a first slide rail 2, a first limiting member 71 and a second limiting member 72. The first surface 11 of the base 1 is pivotally connected to a first link 31 and a second link 32. In practical implementation, the base 1 is a housing of the sliding door driving device 100, and the first surface 11 of the base 1 is an inner surface of the housing of the sliding door driving device 100, which is not limited to this case.

Referring to fig. 1, 2 and 3, one end of the first link 31 is pivoted to the first surface 11 of the base 1, the other end of the first link 31 is pivoted to the first end 41 of the floating rail 4, and the first link 31 is located between the first slide rail 2 and the floating rail 4; one end of the second link 32 is pivotally connected to the first surface 11 of the base 1, the other end of the second link 32 is pivotally connected to the second end 42 of the floating rail 4, and the second link 32 is located between the first slide rail 2 and the floating rail 4. One of the first link 31 and the second link 32 rotates to move the floating rail 4, and the other of the first link 31 and the second link 32 rotates.

Referring to fig. 1, fig. 2 and fig. 3, the sliding door driving apparatus 100 further includes a first stopping portion 431 and a second stopping portion 432, the first stopping portion 431 is disposed at the first end 41 of the floating rail 4, and the second stopping portion 432 is disposed at the second end 42 of the floating rail 4. Specifically, the first stopping portion 431 extends from the first end 41 of the floating rail 4 away from the first slide rail 2 in an arc shape to form a first arc-shaped stopping portion 4311, and the second stopping portion 432 extends from the second end 42 of the floating rail 4 away from the first slide rail 2 in an arc shape to form a second arc-shaped stopping portion 4322, so that the buffering and deceleration effects of the second rotating wheel 52 can be achieved. Preferably, the first arc-shaped stopping portion 4311 and the second stopping portion 4322 are made into a slightly concave structure, so that the second roller 52 drives the sliding door 81 to move to generate a locking and positioning effect, and the first roller 51 and the second roller 52 can also use damping bearings to adjust the operating characteristics of the sliding door mechanism according to requirements, such as reducing the speed or the impact force, depending on the actual situation, which is not limited thereto.

Referring to fig. 1, 2 and 3, the sliding door driving apparatus 100 further includes an operating member 91, the operating member 91 is disposed on the second surface 12 of the base 1, the operating member 91 is connected to one of the first link 31 and the second link 32, and the operating member 91 is operated to form a first acting force. Specifically, when the state shown in fig. 1 is taken as the initial position, the operating element 91 is a knob, the knob is rotated to drive one of the first link 31 and the second link 32 to rotate so as to drive the first end 41 of the floating rail 4 to gradually move away from the first slide rail 2 and the second end 42 of the floating rail 4 to gradually move closer to the first slide rail 2, at this time, the tilt of the floating rail 4 drives the second wheel 52 at the first end 41 to move away from the first wheel 51, after the second wheel 52 passes through the limitation of the first limiting member 71, the second wheel 52 starts to roll along the direction from the floating rail 4 to the second end 42 due to the elastic force of the restoring member 6, and the link 82 drives the sliding door 81 to move along the third direction 1003; when the second wheel 52 rolls to the second end 42, the floating rail 4 is also tilted to the opposite position, i.e. the second end 42 is close to the first slide rail 2 and the first end 41 is far away from the first slide rail 2, because the base 1 and the components connected thereto are left-right symmetric as shown in fig. 1, the description of the door opening and closing operations is only left-right opposite, and will not be described herein.

Referring to fig. 1, fig. 2 and fig. 3, the sliding door driving device 100 further includes a sliding member 92 and a sliding sleeve 93, the sliding member 92 has a third end 923 and a fourth end 924, the third end 923 is opposite to the fourth end 924, the first rotating wheel 51 is pivotally connected to the third end 923 of the sliding member 92, the sliding sleeve 93 is slidably disposed at the fourth end 924 of the sliding member 92, the second rotating wheel 52 is pivotally connected to the sliding sleeve 93, one end of the restoring member 6 is disposed at the third end 923 of the sliding member 92, and the other end of the restoring member 6 is disposed at the sliding sleeve 93.

Referring to fig. 1, fig. 2 and fig. 3, the sliding door driving device 100 further includes a second sliding rail 82 and a driving rod 83, the sliding door 81 is disposed on the second sliding rail 82, the driving rod 83 connects the sliding door 81 with the sliding member 92, and when the sliding member 92 moves along the third direction 1003, the sliding member 92 drives the sliding door 81 to move along the third direction 1003 on the second sliding rail 82 through the driving rod 83.

Referring to fig. 1 and 4, fig. 4 is a schematic view of a second roller of a sliding door driving device according to an embodiment of the present invention at a first end of a floating rail. The sliding door driving device 100 has an initial state a0, when the sliding door driving device 100 is in the initial state a0, the second wheel 52 is located at the first end 41 of the floating rail 4, the first link 31, the floating rail 4, the second link 32 and the first slide rail 2 form a quadrilateral S1, a first included angle B1 of four inner angles of the quadrilateral S1 is an included angle formed by the first link 31 and the first slide rail 2, a second included angle B2 is an included angle formed by the second link 32 and the first slide rail 2, and the first wheel 51 is located at one end of the first slide rail 2. At this time, the first end 41 of the floating rail 4 is close to the first slide rail 2, and the second end 42 of the floating rail 4 is far from the first slide rail 2.

Referring to fig. 1, 4 and 5, fig. 5 is a schematic view illustrating a second wheel of a sliding door driving device according to an embodiment of the present invention before the second wheel is disengaged from a first limiting member. The state of the sliding door driving device 100 before the second wheel 52 disengages from the first stopper 71 is the first state a1, when the sliding door driving device 100 is in the first state a1, the first link 31 or the second link 32 rotates to drive the floating rail 4 to move, the distance between the first end 41 of the floating rail 4 and the first rail 2 is longer than the distance between the second end 42 of the floating rail 4 and the first rail 2, so the second wheel 52 starts to roll toward the second end 42 on the floating rail 4 due to the restoring force of the restoring member 6 until the first stopper 71 abuts against the second wheel 52 and cannot continue to roll toward the second end 42.

Referring to fig. 1 to 6, fig. 6 is a schematic view illustrating a second rotating wheel of a sliding door driving device according to an embodiment of the invention being separated from a first limiting member 71. The state of the second rotating wheel 52 of the sliding door driving device 100 after being disengaged from the first limiting member 71 is the second state a2, and when the sliding door driving device 100 is in the second state a2, the distance between the floating rail 4 and the first sliding rail 2 at the first end 41 is continuously increased by the operation member 91 rotating the first connecting rod 31 or the second connecting rod 32, so that the distance between the second rotating wheel 52 and the first rotating wheel 51 is continuously increased until the distance exceeds the resistance of the first limiting member 71, and the sliding door driving device can be driven by the restoring force of the restoring member 6 to continuously roll along the floating rail 4 to the second end 42. And at this time, the first included angle B1 formed by the first link 31 and the first slide rail 2 is greater than 90 degrees, which is characterized by greater than 90 degrees, so that even if the user releases his/her hand and no longer applies force to the operating member 91, the restoring force of the restoring member 6 can continuously maintain the inclination angle of the floating rail 4 at the maximum, i.e. the first end 41 is farthest from the first slide rail 2, and the second end 42 is closest to the first slide rail 2. From the first state a1 to the second state a2, the operating element 91 generates a switching feeling, the switching feeling comes from the initial state a0 to the first state a1, the restoring force of the restoring member 6 tends to rotate the first link 31 counterclockwise in the viewing angle of fig. 4, i.e., the first included angle B1 which has not exceeded 90 degrees tends to decrease, and the operating element 91 tends to rotate back to the a0 state; however, when the second state a2 is applied, the restoring force of the restoring member 6 tends to rotate the first link 31 clockwise in the view of fig. 6 because the first included angle B1 exceeds 90 degrees, i.e., the first included angle B1, which exceeds 90 degrees, tends to increase continuously, and the operating member 91 tends to rotate to the opposite direction and lean to the bottom rotated position by itself.

Referring to fig. 1 to 7, fig. 7 is a schematic view illustrating a transition state of a second wheel of a sliding door driving device between a first end and a second end of a floating rail according to an embodiment of the present invention. The second wheel 52 of the sliding door driving device 100 is in a third state A3 between the first end 41 and the second end 42 of the floating rail 4, when the sliding door driving device 100 is in the third state A3, the second wheel 52 rolls from the first end 41 to the second end 42 of the floating rail 4 due to the restoring force of the restoring member 6, and the first included angle B1 formed by the first link 31 and the first slide rail 2 is greater than 90 degrees, so that the feature of being greater than 90 degrees makes the user no longer need to apply force to the operating member 91 at this time, the restoring force of the restoring member 6 can maintain the first included angle B1 to be maximum, the inclination angle of the floating rail 4 is maximum, and the operating member 91 rotates to the bottom position.

Referring to fig. 1 to 8, fig. 8 is a schematic view of a second roller of a sliding door driving device according to an embodiment of the present invention at a second end of a floating rail. The second wheel 52 of the sliding door driving device 100 is in a fourth state a4 at the second end 42 of the floating rail 4, when the sliding door driving device 100 is in the fourth state a4, the second wheel 52 is at the second end 42 of the floating rail 4, a first included angle B1 formed by the first connecting rod 31 and the first sliding rail 2 is larger than a second included angle B2 formed by the second connecting rod 32 and the first sliding rail 2, and the first wheel 51 is at the other end of the first sliding rail 2. At this time, the first end 41 of the floating rail 4 is far away from the second slide rail 2, and the second end 42 of the floating rail 4 is close to the second slide rail 2. Compared with the third state A3, in the fourth state a4, the first included angle B1 formed by the first link 31 and the first slide rail 2 is unchanged, the second included angle B2 formed by the second link 32 and the first slide rail 2 is unchanged, and the restoring force of the restoring element 6 is minimized. When one of the first link 31 and the second link 32 is driven to move the slide door driving apparatus 100 from the first state a1 to the fourth state a4, the first included angle B1 increases and the second included angle B2 decreases.

In the embodiment of the present invention, when a second external force acts on one of the first link 31 and the second link 32, the one of the first link 31 and the second link 32 drives the floating rail 4 to move so that the second wheel 52 moves along the first direction 1001 and the second wheel 52 moves away from the first wheel 51, the second wheel 52 moves along the first direction 1001 to disengage from the second limiting member 72, and then the second wheel 52 moves along the second direction 1002 from the second end 42 of the floating rail 4 to the first end 41 of the floating rail 4 under the restoring force of the restoring member 6, and the second wheel 52 moves to drive the first wheel 51 to move on the first sliding rail 2 so as to drive the sliding door 81 to move along the third direction 1003. In other words, the series of mechanical linkages generated after the first external force is applied are symmetrical to the series of mechanical linkages generated after the second external force is applied.

In the embodiment of the present invention, when the second wheel 52 is located on the first position-limiting member 71, the first position-limiting member 71 prevents the second wheel 52 from moving along the second direction 1002; when the second wheel 52 is located on the second position-limiting member 72, the second position-limiting member 72 prevents the second wheel 52 from moving in the reverse direction along the second direction 1002. In the embodiment of the present invention, when the second pulley 52 moves from the first end 41 of the floating rail 4 to the second end 42 of the floating rail 4 along the second direction 1002, the second stopping portion 431 limits the second pulley 52 to continue to move along the second direction 1002, so that the sliding door 81 stops moving along the third direction 1003; when the second pulley 52 moves in the direction opposite to the second direction 1002 from the second end 42 of the floating rail 4 to the first end 41 of the floating rail 4, the first stopper 431 limits the second pulley 52 to continue to move in the direction opposite to the second direction 1002, so that the sliding door 81 stops moving in the direction opposite to the third direction 1003.

In the embodiment of the present invention, when the second wheel 52 moves from the first end 41 of the floating rail 4 to the second end 42 of the floating rail 4 along the second direction 1002, the second wheel 52 stops moving along the second direction 1002 at the first arc-shaped stopping portion 4311, so that the sliding door 81 stops moving along the third direction 1003; when the second pulley 52 moves from the second end 42 of the floating rail 4 to the first end 41 of the floating rail 4 in the direction opposite to the second direction 1002, the second pulley 52 stops moving in the direction opposite to the second direction 1002 at the second arc-shaped stopping portion 4322, so that the sliding door 81 stops moving in the direction opposite to the third direction 1003.

In the embodiment of the present invention, the distance between the axis of the first pulley 51 and the axis of the second pulley 52 is the first distance L1, and when the sliding door driving apparatus 100 is in the initial state a0, the distance between the axis of the first pulley 51 and the axis of the second pulley 52 is the initial distance L0; when the first external force acts on one of the first link 31 and the second link 32, the first distance L1 increases, and the first distance L1 is greater than the initial distance L0; when the second pulley 52 moves from the disengaging first stopper 71 to the second end 42 of the floating rail 4, the first distance L1 decreases.

In the embodiment of the present invention, when one of the first link 31 and the second link 32 drives the floating rail 4 to move so that the second pulley 52 moves along the first direction 1001, the second pulley 52 drives the sliding sleeve 93 to move along the first direction 1001, the restoring force of the restoring member 6 increases, after the second pulley 52 moves along the first direction 1001 to be away from the first limiting member 71, the second pulley 52 moves along the second direction 1002 from the first end 41 of the floating rail 4 to the second end 42 of the floating rail 4 under the restoring force of the restoring member 6, the second pulley 52 moves to drive the sliding sleeve 93 to move along the first direction 1001 in the opposite direction and the sliding member 92 moves along the third direction 1003, and the sliding member 92 drives the first pulley 51 to move on the first sliding rail 2 to drive the sliding door 81 to move along the third direction 1003.

In summary, the present invention provides a sliding door driving device, which includes a base, a first sliding track, a first connecting rod, a second connecting rod, a floating track, a first rotating wheel, a second rotating wheel, a restoring member, a first limiting member and a sliding door, wherein the base has a first surface and a second surface, the first surface is opposite to the second surface, the first sliding track is disposed on the first surface of the base, the first connecting rod is pivotally connected to the first surface of the base, the second connecting rod is pivotally connected to the first surface of the base, the floating track has a first end and a second end, the first end is opposite to the second end, the first end of the floating track is pivotally connected to the first connecting rod, the second end of the floating track is pivotally connected to the second connecting rod, the first rotating wheel is disposed on the first sliding track, the second rotating wheel is disposed on the floating track, the restoring member connects the first rotating wheel to the second rotating wheel, the first limiting member is disposed on the first surface of the base, and the sliding door is connected to the first rotating wheel, when a first external force acts on one of the first connecting rod and the second connecting rod, one of the first connecting rod and the second connecting rod drives the floating rail to move so that the second rotating wheel moves along a first direction to enable the second rotating wheel to be away from the first rotating wheel, the second rotating wheel moves along the first direction to be separated from the first limiting part and then moves from the first end of the floating rail to the second end of the floating rail along a second direction under the action of restoring force of the restoring part, the second rotating wheel moves to drive the first rotating wheel to move on the first sliding rail so as to drive the sliding door to move along a third direction, the direction of the second rotating wheel away from the first rotating wheel is the first direction, and the direction from the first end of the floating rail to the second end of the floating rail is the second direction.

Although the present invention has been described in connection with the accompanying drawings, the embodiments disclosed in the drawings are intended to be illustrative of preferred embodiments of the present invention and should not be construed as limiting the invention. The scale in the schematic drawings does not represent the scale of actual components for the sake of clarity in describing the required components.

The present invention has been described in relation to the above embodiments, which are only exemplary of the implementation of the present invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. Rather, it is intended that all such modifications and variations be included within the spirit and scope of this invention.