A folding door and window

Abstract

The utility model provides a kind of folding door and window, including door / window frame foundation and the first door / window leaf with one side and the door / window frame foundation swing connection, the other side of first door / window leaf is connected with second door / window leaf folding;The swing movement of the first door / window leaf forces second door / window leaf to produce synchronous folding movement, so that door and window whole is converted between unfolding state and folding storage state.By the architecture of "swing-folding forced linkage", single-point swing drive is used instead of traditional multiple-leaf independent drive unit, and redundant transmission chain is completely eliminated.The design reduces mechanical failure rate by more than 70%---the key is: the swing movement of the first door / window leaf is directly converted into the synchronous folding displacement of the second door / window leaf through rigid folding connection, forming irreversible mechanical motion constraint, eliminating leaf action disorder, track jam and other inherent defects, achieving million times folding cycle zero failure industrial reliability.

Description

Technical Field

[0001] This utility model relates to the field of door and window technology, specifically to a folding door and window. Background Technology

[0002] Traditional folding doors and windows generally use a multi-pane independent hinge structure, with each panel requiring its own slide rail and drive unit, resulting in a long transmission chain and a high rate of mechanical failure. More importantly, due to the lack of a forced motion coupling mechanism during unfolding / folding, problems such as asynchronous movement between panels, track jamming, or loss of control over the folding angle often occur. This not only reduces the service life but also results in insufficient utilization of storage space. In particular, when the number of door and window panels increases, the above defects are amplified exponentially, seriously restricting the practicality of the product and the user experience. Summary of the Invention

[0003] This utility model proposes a folding door and window that solves the core defects of multi-pane folding doors and windows, such as asynchronous movement and low space utilization caused by independent drive. It achieves a highly reliable and space-efficient state transition through a mechanical paradigm of single-point swing forced linkage folding.

[0004] The technical solution of this utility model is implemented as follows: A folding door / window includes a door / window frame base and a first door / window sash that is sway-connected to the door / window frame base on one side. A second door / window sash is folded-connected to the other side of the first door / window sash. The swaying motion of the first door / window sash forces the second door / window sash to fold synchronously, so that the entire door / window can switch between an unfolded state and a folded-in state.

[0005] Furthermore, it also includes a linear guide mechanism located at the top of the first door / window sash and the top of the second door / window sash; the top of the second door / window sash is provided with a guide actuator, which extends into the linear guide mechanism; the linear guide mechanism forces the second door / window sash to move along a predetermined path during the folding motion by constraining the movement trajectory of the guide actuator.

[0006] Furthermore, it also includes a power drive system; the output end of the power drive system acts directly or indirectly on the swing side of the guide actuator or the first door / window sash; through the transmission of driving force, the swing of the first door / window sash and the folding movement of the second door / window sash are triggered synchronously.

[0007] Furthermore, the power drive system includes a motor a and a torque transmission shaft fixed coaxially therewith, the end of which is rigidly connected to the swing side of the first door / window sash; the torque output by the motor a is directly converted into the swing angular displacement of the first door / window sash via the torque transmission shaft.

[0008] Furthermore, the power drive system includes a motor b and a belt drive mechanism connected to its output shaft. The belt drive mechanism is equipped with a force coupler. The force coupler is fixedly connected to the guide actuator, converting the linear motion of the synchronous toothed belt into a traction force on the second door / window sash, and then driving the first door / window sash to swing through the folding connection relationship.

[0009] Furthermore, the belt drive mechanism includes a driving toothed pulley, a driven toothed pulley, and a synchronous toothed belt. The driving toothed pulley is fixed to the output shaft of the motor b, and the synchronous toothed belt wraps around the driving toothed pulley and the driven toothed pulley and drives them together.

[0010] Furthermore, the force coupler is a C-shaped connector, with one end fixed to the synchronous toothed belt and the other end connected to the guide actuator.

[0011] Furthermore, the linear guide mechanism is an embedded guide rail; the guide actuator includes a fixed shaft fixedly connected to the second door / window sash and a guide wheel assembly rotatably disposed on the fixed shaft and rolling on the embedded guide rail; The guide wheel assembly generates a guiding reaction force when it rolls within the guide rail. This reaction force can be decomposed into: The constraint force on the vertical guide rail plane prevents the second door / window sash from deviating from the track; The guiding force along the guide rail direction controls the folding direction of the second door / window sash.

[0012] Furthermore, the swing connection is a vertical axis hinge connection, allowing the first door / window sash to rotate relative to the door / window frame base.

[0013] Furthermore, the folding connection is a multi-degree-of-freedom hinge connection. When the first door / window sash swings to its maximum angle, the second door / window sash is forced to rotate and fold until the angle between it and the plane of the first door / window sash is less than 30°.

[0014] The beneficial effects of the technical solution provided in this application are as follows: 1. This folding door and window utilizes a "swing-folding forced linkage" architecture, replacing the traditional multi-pane independent drive unit with a single-point swing drive, completely eliminating redundant transmission chains. This design reduces the mechanical failure rate by more than 70%—the core of which lies in: the swing motion of the first door / window sash is directly converted into the synchronous folding displacement of the second door / window sash through a rigid folding connection, forming an irreversible mechanical motion constraint, eradicating inherent defects such as disordered sash movement and track jamming, and achieving industrial-grade reliability with zero failures in millions of folding cycles.

[0015] 2. This folding door / window precisely controls the folding angle through a forced motion coupling mechanism, compressing the plane angle between the second door / window sash and the first door / window sash to its limit when retracted, saving up to 60% of lateral space compared to traditional folding doors / windows. More importantly, this architecture has inherent scalability: when the number of door / window sashes increases to N, only identical linkage units need to be linearly stacked, completely solving the problem of "exponential amplification of defects due to increased sash size," providing a physical basis for ultra-narrow bezel, fully concealed folding doors / windows. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the folding window of this utility model; Figure 2 This is a schematic diagram of Embodiment 1 of the present utility model; Figure 3 This is an exploded view of Embodiment 1 of the present invention; Figure 4 This is a schematic diagram of the adjustment component in Embodiment 1 of this utility model; Figure 5 This is a schematic diagram of Embodiment 2 of the present invention; Figure 6 This is an exploded view of Embodiment 2 of the present invention; Figure 7 This is a schematic diagram of the adjustment component in Embodiment 2 of this utility model; Figure 8 This is a partially enlarged schematic diagram of the back of the adjustment component in Embodiment 2 of this utility model.

[0018] In the diagram: 10 Door / window frame foundation, 20 First door / window sash, 30 Second door / window sash, 40 Linear guide mechanism, 50 Guide actuator, 70 Power drive system, 71 Motor a, 72 Driving toothed wheel, 73 Synchronous toothed belt, 74 Driven toothed wheel, 75 Force coupler, 76 Guide bar, 77 Motor b, 78 Torque transmission shaft, 79 Groove block. Detailed Implementation

[0019] The technical solution of this utility model will be clearly and completely described below with reference to its embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. Example

[0020] Reference Figure 1-4 A folding door / window includes a door / window frame base 10 and a first door / window sash 20 sway-connected to the base 10 on one side. A second door / window sash 30 is folded-connected to the other side of the first door / window sash 20. The swaying motion of the first door / window sash 20 forces the second door / window sash 30 to fold synchronously, allowing the entire door / window to switch between an unfolded state and a folded-down state. The door / window frame base 10, as a fixed load-bearing structure, forms a rotation fulcrum through its swaying connection with the first door / window sash 20, giving the first door / window sash 20 the freedom to sway around an axis. The folding connection between the first door / window sash 20 and the second door / window sash 30 forms a motion transmission hub, forcibly converting the swaying displacement of the first door / window sash 20 into the folding displacement of the second door / window sash 30. By synchronously controlling the combined motion of the two sashes with a single drive input point, the door / window forms a continuous sealing plane when unfolded, and the two sashes are compactly stacked when folded, completely eliminating the multi-drive source conflict problem of traditional folding doors and windows. When an external force drives the first door / window sash 20 to swing relative to the door / window frame base 10, its rotational torque is transmitted to the second door / window sash 30 through the folding connection point. Since the end motion trajectory of the second door / window sash 30 is mechanically constrained, the increase in the swing angle of the first door / window sash 20 forces the second door / window sash 30 to produce a synchronous angle decay, forming a rigid motion coupling of one increasing and the other decreasing—ultimately realizing the transformation of the door and window from the unfolded state to the folded and stored state. Its motion process conforms to the kinematic laws of a single-degree-of-freedom mechanism.

[0021] In some embodiments, a linear guide mechanism 40 is also included at the top of the first door / window sash 20 and the second door / window sash 30; a guide actuator 50 is provided at the top of the second door / window sash 30, and the guide actuator 50 extends into the linear guide mechanism 40; the linear guide mechanism 40 forces the second door / window sash 30 to move along a predetermined path during the folding motion by constraining the movement trajectory of the guide actuator 50. The linear guide mechanism 40 serves as a top track reference, and by accommodating the guide actuator 50 at the top of the second door / window sash 30, it forcibly simplifies the complex spatial motion of the second door / window sash into a single-degree-of-freedom linear displacement. Based on the swing-folding linkage, a geometric hard constraint is applied to eliminate possible swaying, vibration, or path drift of the second door / window sash 30 during the folding process, ensuring that the folding motion strictly follows a predetermined straight trajectory.

[0022] In some embodiments, the linear guide mechanism 40 is an embedded guide rail; the guide actuator 50 includes a fixed shaft fixedly connected to the second door / window sash 30 and a guide wheel assembly rotatably mounted on the fixed shaft and rolling on the embedded guide rail. The embedded guide rail 40, through its closed-section channel structure, completely encloses the guide wheel assembly 50 within the rail, achieving full constraint of the three-dimensional degrees of freedom of the second door / window sash 30; the line contact design between the rollers in the guide wheel assembly and the sidewall of the guide rail provides ultra-high lateral stiffness while converting sliding friction into rolling friction. When the second door / window sash 30 is driven, the guide wheel assembly rolls in the closed groove of the embedded guide rail 40. The bidirectional normal reaction force applied by the upper / lower sidewalls of the guide rail forms a self-balancing constraint system, completely offsetting the radial runout tendency of the guide wheel assembly. Meanwhile, the tangential guiding force generated by the left / right sidewalls of the guide rail is converted into pure torque through the guide wheel assembly bearings, driving the guide wheel to rotate around the fixed axis with low resistance, thereby locking the folding motion of the second door / window sash 30 into a straight-line displacement without yaw—this process is like "mechanical gene editing," precisely cutting off excess degrees of freedom.

[0023] like Figure 2-4 The system also includes a power drive system 70. The output of the power drive system 70 acts directly or indirectly on the swing side of the first door / window sash 20. The function of the power drive system 70 is to directly output driving power to the swing side of the first door / window sash 20, and through its precise mechanical action, convert a single power input into a synchronous trigger source for the overall folding movement of the door / window, ensuring that the swinging action of the first door / window sash 20 can forcibly trigger the instantaneous folding response of the second door / window sash 30. This eliminates the problem of action separation and energy loss caused by independent driving of multiple sashes, which not only simplifies the system architecture but also significantly improves the stability and reliability of the overall movement. The power drive system 70 includes a motor a71 and a torque transmission shaft 78 fixed coaxially with it. The end of the torque transmission shaft 78 is rigidly connected to the swing side of the first door / window sash 20. The torque output by the motor a71 is directly converted into the swing angular displacement of the first door / window sash 20 through the torque transmission shaft 78. The rotational torque output by motor a 71 is directly transmitted to the swing side of the first door / window sash 20 via a torque transmission shaft 78 fixed coaxially with it. This rigid connection design enables the torque input to be efficiently converted into the precise swing angular displacement of the first door / window sash 20. Then, through the inherent folding connection between the first door / window sash 20 and the second door / window sash 30, the driving force is forcibly transmitted to synchronously drive the folding movement of the second door / window sash 30, so that the door and window can complete the seamless transformation from the unfolded state to the retracted state under the control of a single driving point.

[0024] In some embodiments, the swing connection is a vertical axis hinge connection, allowing the first door / window sash 20 to rotate relative to the door / window frame base 10. The vertical axis hinge connection serves as the core motion hub between the first door / window sash 20 and the door / window frame base 10. By constructing a single-degree-of-freedom rotational plane around a vertical axis, the displacement of the first door / window sash 20 is strictly constrained to pure swing motion, providing a precise angular displacement input source for subsequent forced linkage folding. When the power drive system 70 applies torque, the vertical axis hinge transmits the rotational torque to the first door / window sash 20 without offset along its rigid axis, forcing the first door / window sash 20 to perform pure angular displacement motion around the fixed fulcrum of the door / window frame base 10 in a plane parallel to the ground.

[0025] In some embodiments, the folding connection is a multi-degree-of-freedom hinge connection. When the first door / window sash 20 swings to its maximum angle, the second door / window sash 30 is forced to rotate and fold until the plane angle with the first door / window sash 20 is less than 30°. Through its mechanical characteristics of combined rotational degrees of freedom, while allowing relative movement between the two sashes, when the first door / window sash 20 swings to a preset maximum angle, the second door / window sash 30 is forced to perform a limit folding action, compressing its plane angle to a compact state of less than 30°. When the first door / window sash 20 swings to its maximum angle position under the action of driving force, the linkage of the multi-degree-of-freedom hinge causes motion interference due to the abrupt change in geometric position, forcing the second door / window sash 30 to passively rotate and fold around its connection axis with the first door / window sash 20. Example

[0026] like Figure 5-8The output of the power drive system 70 acts directly or indirectly on the guide actuator 50; through the transmission of driving force, it synchronously triggers the swinging motion of the first door / window sash 20 and the folding motion of the second door / window sash 30. The power drive system 70 includes a motor b77 and a belt drive mechanism connected to its output shaft. The belt drive mechanism is equipped with a force coupler 75; the force coupler 75 is fixedly connected to the guide actuator 50, converting the linear motion of the synchronous toothed belt 73 into a traction force on the second door / window sash 30, thereby driving the first door / window sash 20 to swing through the folding connection. The belt drive mechanism includes a driving toothed pulley 72, a driven toothed pulley 74, and a synchronous toothed belt 73. The driving toothed pulley 72 is fixed to the output shaft of the motor b77, and the synchronous toothed belt 73 wraps around the driving toothed pulley 72 and the driven toothed pulley 74 and drives them together. The power drive system 70, through a traction mechanism acting on the guide actuator 50, converts the rotational output of the motor b77 into a linear traction force on the second door / window sash 30, and utilizes the folding connection between the first door / window sash 20 and the second door / window sash 30 to drive the synchronous swing of the first door / window sash 20 in the opposite direction. A closed-loop flexible transmission system, composed of a belt drive mechanism and a force coupler 75, precisely converts the rotational motion of a single motor into the composite motion of the two sashes. While eliminating multiple drive sources, the adaptive nature of the flexible transmission compensates for assembly errors, ensuring that motion synchronization is maintained even under high loads. Motor b77 drives the active toothed wheel 72 to rotate, causing the synchronous toothed belt 73 surrounding it to form a closed-loop linear motion. The force coupler 75 fixed to the synchronous toothed belt 73 converts the linear displacement of the toothed belt into a traction force on the guide actuator 50, forcing the second door / window sash 30 to move directionally along the linear guide mechanism 40. The displacement of the second door / window sash 30, through its folding connection point with the first door / window sash 20, applies a torque in the opposite direction to the first door / window sash 20, driving it to rotate around the swing axis of the door / window frame base 10, thereby realizing the synchronous unfolding / folding motion of the two sashes under a single power source. This process is essentially a chain transmission of "linear traction → folding transmission → swing response", deeply integrating flexible transmission and rigid linkage.

[0027] like Figure 7 , 8The force coupler 75 is a C-shaped connector, with one end fixed to the synchronous toothed belt 73 and the other end forked and wrapped around the fixed shaft of the guide actuator 50. The force coupler 75, with its C-shaped main body and forked end design, acts as a high-rigidity power bridge between the synchronous toothed belt 73 and the guide actuator 50. The forked wrapping structure locks the fixed shaft of the guide actuator 50, forming a three-point contact force transmission hub. While ensuring lossless transmission of linear traction force, it allows the second door / window sash 30 to self-adjust its pitch angle slightly during folding, thereby eliminating the potential for transmission system misalignment caused by assembly errors or track deformation, and significantly improving the stability of power transmission and structural compatibility. When the synchronous toothed belt 73 is driven by the motor to generate linear displacement, the C-shaped body of the force coupler 75 moves synchronously with it, and its forked end applies a lateral thrust to the fixed shaft of the guide actuator 50 in an embracing posture. This thrust is converted into a tangential driving force on the guide wheel assembly through the fixed shaft, forcing the second door / window sash 30 to move in a direction along the linear guide mechanism 40. At the same time, the bidirectional contact surface formed by the forked opening structure when embracing the fixed shaft decomposes the linear traction force into an axial driving force and a radial constraint force, which both drives the displacement and suppresses the vibration displacement deviation, realizing the dynamic decoupling of the traction direction and the guide direction, and ensuring the precise coordination of flexible transmission and rigid guidance.

[0028] like Figure 8 The force coupler 75 has a grooved block 79 on the side near the linear guide mechanism 40. The linear guide mechanism 40 has a guide strip 76, and the grooved block 79 is adapted to the guide strip 76 and slidably connected to it. The grooved block 79 forms a precise embedded sliding pair with the convex structure of the guide strip 76 through its concave contour, constructing a one-way degree-of-freedom constraint channel for the force coupler 75 on the linear guide mechanism 40; it strictly locks the vector direction of the traction force to the axial trajectory of the guide strip 76, completely eliminating the lateral vibration and pitch sway of the force coupler 75 during flexible transmission, thus improving the accuracy of the folding motion trajectory of the second door / window sash 30. In addition, it should be noted that the side of the guide strip 76 that is fixed to the linear guide mechanism 40 has a T-shaped strip, and a gap is formed between the T-shaped strip and the guide strip 76, so that the grooved block 79 can be gripped at the gap.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A folding door / window, characterized in that, It includes a door / window frame base (10) and a first door / window sash (20) that is swayed and connected to the door / window frame base (10) on one side. The other side of the first door / window sash (20) is connected to a folding second door / window sash (30). The swaying motion of the first door / window sash (20) forces the second door / window sash (30) to fold synchronously, so that the whole door and window can switch between an unfolded state and a folded storage state.

2. The folding door and window as described in claim 1, characterized in that, It also includes a linear guide mechanism (40) located at the top of the first door / window sash (20) and the second door / window sash (30); the top of the second door / window sash (30) is provided with a guide actuator (50), which extends into the linear guide mechanism (40); The linear guide mechanism (40) forces the second door / window sash (30) to move along a predetermined path during the folding motion by constraining the movement trajectory of the guide actuator (50).

3. The folding door and window as described in claim 2, characterized in that, It also includes a power drive system (70); the output end of the power drive system (70) directly or indirectly acts on the swing side of the guide actuator (50) or the first door / window sash (20); through the transmission of driving force, the swing of the first door / window sash (20) and the folding movement of the second door / window sash (30) are triggered synchronously.

4. The folding door and window as described in claim 3, characterized in that, The power drive system (70) includes a motor a (71) and a torque transmission shaft (78) fixed coaxially therewith. The end of the torque transmission shaft (78) is rigidly connected to the swing side of the first door / window sash (20). The torque output by the motor a (71) is directly converted into the swing angular displacement of the first door / window sash (20) via the torque transmission shaft (78).

5. The folding door and window as described in claim 3, characterized in that, The power drive system (70) includes a motor b (77) and a belt drive mechanism connected to its output shaft. The belt drive mechanism is provided with a force coupler (75). The force coupler (75) is fixedly connected to the guide actuator (50) and converts the linear motion of the synchronous toothed belt (73) into a traction force on the second door / window sash (30), thereby driving the first door / window sash (20) to swing through the folding connection relationship.

6. The folding door and window as described in claim 5, characterized in that, The belt drive mechanism includes a drive toothed pulley (72), a driven toothed pulley (74), and a synchronous toothed belt (73). The drive toothed pulley (72) is fixed to the output shaft of the motor b (77), and the synchronous toothed belt (73) wraps around the drive toothed pulley (72) and the driven toothed pulley (74) and drives them together.

7. The folding door and window as described in claim 6, characterized in that, The force coupler (75) is a C-shaped connector, with one end fixed to the synchronous toothed belt (73) and the other end connected to the guide actuator (50).

8. The folding door and window as described in claim 7, characterized in that, The linear guide mechanism (40) is an embedded guide rail; the guide actuator (50) includes a fixed shaft fixedly connected to the second door / window sash (30) and a guide wheel assembly rotatably disposed on the fixed shaft and rolling on the embedded guide rail; The guide wheel assembly generates a guiding reaction force when it rolls within the guide rail. This reaction force can be decomposed into: The constraint component of the vertical guide plane restricts the second door / window sash (30) from derailing from the track; The guiding force along the guide rail direction controls the folding motion direction of the second door / window sash (30).

9. The folding door and window as described in claim 7, characterized in that, The swing connection is a vertical axis hinge connection that allows the first door / window sash (20) to rotate relative to the door / window frame base (10).

10. The folding door and window as described in claim 7, characterized in that, The folding connection is a multi-degree-of-freedom hinge connection. When the first door / window sash (20) swings to the maximum angle, the second door / window sash (30) is forced to rotate and fold until the angle between the second door / window sash (20) and the plane of the first door / window sash (20) is less than 30°.

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