A rope-type car window glass lifter

Abstract

The present invention provides a rope-type window lifter that can lower a vehicle window in an emergency, such as a power outage, thereby increasing passengers' chances of escape. The device comprises a lifting guide plate, a guide wheel, a glass slider, a traction rope, and a traction rope winding mechanism. A driving slider is slidably mounted on the lifting guide plate, and both ends of the traction rope are fixedly connected to the driving slider. A clutch pin is fixed to the glass slider. Two clamp arms are hingedly connected to a clamp shaft fixed to the driving slider. An elastic element is provided between the two clamp arms to keep the two clamp arms in a closed state. A clutch hole is formed between the two clamp arms to accommodate the clutch pin. A pull wire passes through one clamp arm and connects to the other clamp arm. Pulling the pull wire can separate the two clamp arms. When the vehicle window glass and the glass slider are not in the lowest position, pulling the pull wire disengages the clutch pin from the clutch hole, causing the vehicle window glass and the glass slider to descend to the lowest position under the action of gravity.

Description

Technical Field

[0001] This patent belongs to the field of vehicle engineering technology, and specifically relates to a car window lifter. Background Art

[0002] Commonly used window lifts include scissor-type and rope-type. Rope-type window lifts primarily consist of a lift guide fixed to the door frame, guide wheels rotatably mounted at the upper and lower ends of the lift guide, a glass slider slidably mounted on the lift guide for connection to the window glass, a traction rope, and a traction rope winding mechanism. The ends of the traction rope pass over two guide wheels and are fixedly connected to the glass slider. The traction rope winding mechanism rotates, retracting and extending the traction rope, causing the glass slider to move up and down along the lift guide, raising and lowering the window glass.

[0003] Car accidents often lead to drowning deaths. The root cause is that after the car falls into the water, the closed doors cannot be opened due to the external water pressure. At the same time, the window glass is too strong to break without tools, which makes it very difficult for passengers to escape and eventually drown. When a car is involved in a serious traffic accident, it is easy to cause the car body to deform and the entire electrical system to lose power. Not only can the doors not be opened, but the windows cannot be lowered, making it impossible for passengers to escape.

[0004] If a new window lifter is installed inside a car door, when the car falls into water or an accident occurs, causing the body to tilt, a small movement of opening the door can cause the window glass to fall off. When the posture is normal, the lifter can be automatically reset by operating the switch of the window lifter. This not only allows passengers to get a chance to escape in time, but also prevents further damage to the car. It undoubtedly has extremely important practical significance. Summary of the Invention

[0005] The object of the present invention is to provide a rope-type window glass lifter which can lower the window glass in an emergency state such as power failure, thereby increasing the chances of passengers escaping.

[0006] In order to achieve this technical purpose, the present invention adopts the following technical solutions:

[0007] The rope-type vehicle window glass lifter comprises a glass lifting device consisting of a lifting guide plate fixed to a vehicle door frame, guide wheels rotatably arranged at the upper and lower ends of the lifting guide plate, a glass slider slidably arranged on the lifting guide plate and connected to the vehicle window glass, a traction rope, and a traction rope winding mechanism. It also includes a driving slider slidably arranged on the lifting guide plate, and the two ends of the traction rope are fixedly connected to the driving slider after passing through the two guide wheels; the glass slider is located below the driving slider, and a clutch pin is fixed on the glass slider; the two clamp arms of the clamp are both hinged on the clamp rotating shaft fixed to the driving slider, the lower ends of the two clamp arms extend downwardly beyond the clutch pin, and an elastic element is provided between the two clamp arms so that the lower ends of the two clamp arms are in a closed state in a normal state; a clutch hole for accommodating the clutch pin is formed between the lower parts of the two clamp arms in the closed state; one end of the pull wire passes through one clamp arm and is connected to the other clamp arm, and when the other end of the pull wire is pulled, the elastic force of the elastic element can be overcome to separate the lower ends of the two clamp arms;

[0008] When the window glass and the glass slider are not in the lowest position, pull the pull wire 1, the lower ends of the two clamp arms separate, the clutch pin disengages from the clutch hole, and the window glass and the glass slider drop to the lowest position under the action of gravity.

[0009] Beneficial effects of the present invention:

[0010] This invention enhances the traditional rope-type window lift by adding components such as a drive slider, a clutch pin, and a clamp. Under normal circumstances, the lower ends of the two clamp arms attached to the drive slider are closed by an elastic element, and the clutch pin is located within a clutch hole formed between the lower portions of the two clamp arms. The drive slider, clamp, and clutch pin are integrally connected. When the traction rope winding mechanism is activated, the traction rope drives the drive slider, glass slider, and other components to rise and fall along the lift guide, thereby raising and lowering the window glass.

[0011] When the window glass and the glass slider are not in the lowest position, such as when the vehicle needs to lower the window under abnormal circumstances, the passenger only needs to pull the wire so that the lower parts of the two clamp arms of the clamp overcome the elastic force of the elastic element and separate, and the clutch pin disengages from the clamp. At this time, the glass slider and the clutch pin are separated from the clamp and the drive slider, and the glass slider and the window glass can be lowered along the lifting guide under gravity.

[0012] With the above structure, if the window glass is lowered due to an inadvertent pulling of the pull wire, how to restore the window glass to normal lifting is another problem. Therefore, as a further improvement to the present invention, the lower end surfaces of the two clamp arms are inclined. When the lower ends of the two clamp arms are closed, the lower end surfaces of the two clamp arms form an inverted V shape with a narrow top and a wide bottom; the clutch pin is cylindrical;

[0013] When the traction rope winding mechanism is activated and the driving slider is driven by the traction rope to move toward the glass slider which has dropped to the lowest position under the action of gravity, the outer cylindrical surface of the clutch pin contacts the lower end surfaces of the two clamp arms, pushing the two clamp arms to swing against the elastic force of the elastic element, so that the lower ends of the two clamp arms gradually separate, and then the clutch pin enters the clutch hole, and the lower ends of the two clamp arms close again under the elastic force of the elastic element.

[0014] When the pull wire is pulled by mistake, the lower part of the clamp opens and the window glass drops. At this time, the traction rope winding mechanism is activated to drive the driving slider and the clamp to move downward along the lifting guide plate. The lower end surface of the clamp arm gradually approaches and contacts the clutch pin on the glass slider. The outer cylindrical surface of the clutch pin pushes the two clamp arms to overcome the elastic force of the elastic element and swing. The lower ends of the two clamp arms gradually separate, and then the clutch pin enters the clutch hole. The lower ends of the two clamp arms close together under the elastic force of the elastic element, and the driving slider, clamp and clutch pin are connected into one again. The rope-type glass lifting device works normally, and the lifting and lowering of the window glass are achieved by the traction rope winding mechanism.

[0015] As a further improvement to the present invention, a stopper is fixed to the drive slide, positioned between the two clamp arms. The stopper is symmetrical about the plane (i.e., the symmetry plane) containing the axis of the clamp shaft and the axis of the clutch pin. The stopper ensures that the two clamp arms remain substantially symmetrical about the symmetry plane when the clamp arms are separated and then reassembled, preventing the clamp from deviating from its position and ensuring that the lower end surfaces of the clamp arms contact the clutch pin on the glass slide when the clamp moves downward.

[0016] In order to prevent the window glass from falling due to misoperation of the clamp when the vehicle is in a normal state, and to ensure that the window glass can be smoothly lowered when the vehicle falls into water or an accident causes the vehicle body to tilt, as a further improvement to the present invention, the passive component includes a passive component top surface and a passive component bottom surface connected to each other up and down, and the passive component bottom surface is a spherical surface; a sphere is placed on the passive component bottom surface;

[0017] The active component includes an active component top surface, a sliding rod, and an active component bottom surface. The lower periphery of the active component top surface is connected to the active component bottom surface via a sliding rod passing through the passive component bottom surface. The active component top surface is a spherical surface with a clearance hole in the middle and is located between the passive component top surface and the passive component bottom surface. The diameter of the clearance hole is larger than the diameter of the sphere.

[0018] A posture sensor housing with an axis extending up and down is fixed to the door frame. The posture sensor housing, the bottom surface of the passive component (which is a spherical surface), and the top surface of the active component (which is a spherical surface) are all coaxial. Both the passive component and the active component can move relative to the posture sensor housing along the axis.

[0019] A return spring is provided between the active part and the attitude sensor housing, which keeps the active part away from the lower part of the attitude sensor in a normal state; the lower end of the active part is connected to a second pull wire that passes through the attitude sensor housing and is used to pull the active part downward; a wire hole is opened in the center of the upper center of the attitude sensor housing, and the other end of the pull wire passes through the wire hole and is connected to the passive part; when the vehicle body on which the door frame is installed is in a horizontal state, the center of gravity of the sphere is located on the axis of the attitude sensor housing, and when the active part moves along the axis of the attitude sensor housing, the sphere passes through the clearance hole; when the vehicle body and the door frame are in an inclined state, the center of gravity of the sphere deviates from the axis of the attitude sensor housing, and the sphere is located between the top surface of the active part and the bottom surface of the passive part. When the active part moves toward the lower part of the attitude sensor housing along the axis of the attitude sensor housing, the top surface of the active part drives the passive part downward through the sphere and the bottom surface of the passive part, pulling the pull wire one to separate the lower ends of the two clamp arms.

[0020] We know that when a vehicle is in a normal state, the vehicle body is generally horizontal. When a vehicle falls into water or encounters other abnormal conditions, the vehicle body generally tilts forward and backward. Based on this, when the vehicle body is in a normal and horizontal state, the axis of the attitude sensor housing fixed to the door frame, the axis of the bottom surface of the passive component, and the axis of the top surface of the active component are coaxial and extend vertically. The center of gravity of the sphere is also located on the axis of the bottom surface of the passive component. At this time, if the second pull wire is pulled to move the active component downward, because the sphere passes through the clearance hole, the top surface of the active component will not contact the bottom surface of the passive component, so the passive component will not be pulled by the active component. The first pull wire will not move, the clamp will remain in the state of clamping the clutch pin, and the window glass will remain in its original position.

[0021] If the vehicle falls into water or is in an abnormal state, when the vehicle body is tilted, the sphere rolls on the bottom surface of the passive part to a position where the center of gravity deviates from the axis of the bottom surface of the passive part, and the sphere is located between the top surface of the active part and the bottom surface of the passive part. At this time, if the second pull wire is pulled to drive the active part to move downward, the top surface of the active part will press down the bottom surface of the passive part through the sphere, and the passive part is pulled downward. By pulling the clamp arm through the first pull wire, the lower ends of the two clamp arms are separated and the clamps are opened, releasing the clutch pin, and the window glass and the glass slider can descend along the lifting guide plate under gravity.

[0022] As a further improvement to the present invention, an adjustment bolt is threadedly connected to the center upper end of the attitude sensor housing, and a wire hole is formed in the center of the adjustment bolt. The adjustment bolt can be used to adjust the tightness and tension of cable 1. Preferably, when the window glass is in the highest position, cable 1 is in a tensioned state, and the connection between the upper end of the passive component and cable 1 is located at the lower end of the adjustment bolt.

[0023] As a further improvement of the present invention, the lower end of the active part has a guide rod passing through the center of the lower end of the attitude sensor housing, the guide rod is connected to the second pull wire, and the return spring is arranged around the guide rod between the lower end of the active part and the lower end of the attitude sensor housing; a limit ring is provided on the guide rod outside the attitude sensor housing; when the limit ring contacts the attitude sensor housing, the active part is located at the highest position away from the lower part of the attitude sensor housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structural composition of the window glass lifter in normal state.

[0025] Figure 2 This is a schematic diagram of the posture sensor structure after tilting.

[0026] Figure 3 It is a structural diagram when the glass slide descends.

[0027] Figure 4 Schematic diagram of the structure when the clutch pin, clamp, glass slider, and drive slider are connected into one body.

[0028] Figure 5 This is a schematic diagram of the clamps when they are separated.

[0029] Figure 6 This is a schematic diagram of the drive slider, etc.

[0030] Figure 7 This is another schematic diagram of the driving slider, etc.

[0031] Figure 8 This is a schematic diagram of a glass slider, etc.

[0032] Figure 9 It is a schematic diagram of the combination of active and passive parts.

[0033] Figure 10 It is a passive parts diagram.

[0034] Figure 11 It is a schematic diagram of active parts.

[0035] In the figure, 1. lifting guide plate, 2. traction rope, 3. traction rope winding mechanism, 4. driving slider, 5. glass slider, 6. block, 7. clamp, 71. clamp arm, 72. clamp shaft, 73. limit block, 74. clutch pin, 75. inverted V shape, 76. elastic element, 8. attitude sensor, 81. attitude sensor housing, 82. active part, 821. top surface of active part, 822. guide rod, 823. sliding rod, 824. clearance hole, 83. passive part, 831. bottom surface of passive part, 84. return spring, 85. sphere, 9. pull wire 1, 10. pull wire 2, 11. adjusting bolt, 12. limit ring. DETAILED DESCRIPTION

[0036] A rope-type window lifter for lowering and resetting vehicle window glass comprises a glass lift device comprising a lift guide fixed to a vehicle door frame, guide wheels rotatably disposed at the upper and lower ends of the lift guide, a glass slider slidably disposed on the lift guide for connection to the vehicle window glass, a drive slider slidably disposed on the lift guide, a traction rope, and a traction rope winding mechanism. The traction rope passes over two guide wheels and is fixedly connected to the drive slider; the glass slider is located below the drive slider and is secured with a cylindrical clutch pin. The two clamp arms are hinged to a clamp shaft fixed to the drive slider. The lower ends of the two clamp arms extend downward beyond the clutch pin. The lower end surfaces of the two clamp arms are inclined. When the lower ends of the two clamp arms are closed, the lower end surfaces of the two clamp arms form an inverted V-shape, narrow at the top and wide at the bottom.

[0037] One end of the pull wire passes through the upper part of one clamp arm and is connected to the upper part of the other clamp arm. An elastic element (compression spring) is provided between the upper parts of the two clamp arms to keep the lower ends of the two clamp arms in a closed state under normal conditions; a clutch hole for accommodating a clutch pin is formed between the lower parts of the two clamp arms in the closed state; the elastic element surrounds the pull wire.

[0038] A limiting block located between the lower parts of the two clamp arms is fixed on the driving slide, and the limiting block is symmetrical with the plane where the axis of the clamp rotating shaft and the axis of the clutch pin are located.

[0039] The passive component includes a passive component top surface and a passive component bottom surface connected to each other up and down. The bottom surface of the passive component is a spherical surface. A sphere is placed on the bottom surface of the passive component.

[0040] The active component includes an active component top surface, a sliding rod, and an active component bottom surface. The lower periphery of the active component top surface is connected to the periphery of the active component bottom surface via a sliding rod passing through the periphery of the passive component bottom surface. The active component top surface is a spherical surface with a clearance hole in the middle and is located between the passive component top surface and the passive component bottom surface. The diameter of the clearance hole is larger than the diameter of the sphere.

[0041] A posture sensor housing with an axis extending up and down is fixed on the door frame. The posture sensor housing, the bottom surface of the passive component which is a sphere, and the top surface of the active component which is a sphere are all coaxial. The outer circle dimensions of the top surface of the passive component and the bottom surface of the passive component are the same as the inner diameter of the posture sensor housing. Both the passive component and the active component can move relative to the posture sensor housing along the axis, and the active component can move axially relative to the passive component along the sliding rod.

[0042] An adjustment bolt with a central hole is threadedly connected to the upper center of the attitude sensor housing. The other end of a first pull wire passes through the hole and connects to the passive component. The lower end of the active component has a guide rod that passes through the center of the lower end of the attitude sensor housing. This guide rod is connected to a second pull wire, which pulls the active component downward. A return spring, which normally holds the active component away from the lower portion of the attitude sensor, surrounds the guide rod and is positioned between the lower end of the active component and the lower end of the attitude sensor housing. A retaining ring is provided on the guide rod outside the attitude sensor housing. When the retaining ring contacts the attitude sensor housing, the active component is positioned at its highest position, away from the lower portion of the attitude sensor housing.

[0043] When the vehicle body on which the door frame is installed is in a horizontal state, the center of gravity of the sphere is located on the axis of the attitude sensor housing. When the pull wire 2 is pulled and the active part moves downward along the axis of the attitude sensor housing, the sphere passes through the clearance hole, the passive part and the pull wire 1 remain stationary, and the two clamp arms of the clamp remain in the state of clamping the clutch pin.

[0044] When the vehicle body and door frame are tilted, the sphere's center of gravity deviates from the axis of the attitude sensor housing, positioning the sphere between the top surface of the active component and the bottom surface of the passive component. Pulling Wire 2 causes the active component to move along the axis of the attitude sensor housing toward the bottom of the housing. The top surface of the active component, through the sphere and the bottom surface of the passive component, drives the passive component downward. Pulling Wire 1 causes the lower ends of the two clamp arms to separate, overcoming the elastic force of the elastic element. This releases the clutch pin, allowing the window glass and glass slider to descend to their lowest position under the action of gravity, separating the glass slider from the drive slider. A stopper is fixed to the bottom of the lifting guide to receive and position the falling glass slider.

[0045] After the glass slider leaves the drive slider, the traction rope winding mechanism can be activated again to reset the window glass. The traction rope drives the drive slider toward the glass slider, which has descended to its lowest position under gravity. The outer cylindrical surface of the clutch pin contacts the inverted V-shaped lower end surfaces of the two clamp arms, pushing the two clamp arms to swing against the elastic force of the elastic element, causing the lower ends of the two clamp arms to gradually separate. The clutch pin then enters the clutch hole, and the lower ends of the two clamp arms close together under the elastic force of the elastic element. The glass slider and drive slider are then connected as one piece via the clamp. The traction rope winding mechanism then reverses its action, allowing the drive slider to drive the glass slider and window glass upward.

[0046] Such a device is installed inside each car door. When multiple people are riding at the same time, if a fall into the water occurs, all the car windows can be lowered to increase the number of escape routes.

[0047] This technology provides a rope-type car window glass lifter, which mainly includes a rope-type glass lift device and a posture sensor. The rope-type glass lift device and the posture sensor are connected by a pull wire 1 with a shell, and the posture sensor is also connected to the door catch or other parts on the car door through a pull wire 2 with a shell.

[0048] The attitude sensor consists of a housing, passive components, active components, and a return spring. The housing is a cylindrical, hollow can, with both the passive and active components mounted within its inner cavity. The housing's lids have small holes (for wires and a guide rod) in the center. A wire is passed through the holes in the upper end, suspending the passive component from the upper end of the inner cavity. The bottom surface of the passive component is a spherical surface with the concave side facing upward. The top surface of the active component is a spherical surface with a clearance hole, facing upward. The sphere rests on the bottom surface of the passive component.

[0049] When the car tilts, the attitude sensor housing also tilts, causing the sphere to roll on the bottom surface of the passive component, deviating from the axis of the attitude sensor housing and positioning itself between the top and bottom surfaces of the active component. Pulling the door latch then pulls the active component downward via cable 2, which in turn drives the passive component downward via the sphere. The passive component then pulls cable 1, which pulls the clamp arm, separating the clamp and releasing the clutch pin. When the car body is not tilted, the force applied by cable 2 is not transmitted to cable 1.

[0050] The rope-type window glass lifter has a compact structure and is easy to install in the cavity inside the door. It also adopts a completely mechanical structure, which can make the window glass fall off, lower and reset in an emergency, and has high reliability.

Claims

1. A rope-type window glass lifter, comprising a lift guide plate fixed to a vehicle door frame, guide wheels rotatably disposed at the upper and lower ends of the lift guide plate, a glass slider slidably disposed on the lift guide plate for connecting to the vehicle window glass, a traction rope, and a traction rope winding mechanism, wherein the glass lifter comprises: The invention also includes a driving slider slidably arranged on the lifting guide plate, and the two ends of the traction rope are fixedly connected to the driving slider after passing through two guide wheels; the glass slider is located below the driving slider, and a clutch pin is fixed on the glass slider; the two clamp arms of the clamp are hinged on the clamp rotating shaft fixed on the driving slider, the lower ends of the two clamp arms extend downward beyond the clutch pin, and an elastic element is provided between the two clamp arms to keep the lower ends of the two clamp arms in a closed state in a normal state; a clutch hole for accommodating the clutch pin is formed between the lower parts of the two clamp arms in the closed state; one end of the pull wire passes through one clamp arm and is connected to the other clamp arm, and when the other end of the pull wire is pulled, the elastic force of the elastic element can be overcome to separate the lower ends of the two clamp arms; When the window glass and the glass slider are not in the lowest position, pull the pull wire 1, the lower ends of the two clamp arms separate, the clutch pin disengages from the clutch hole, and the window glass and the glass slider drop to the lowest position under the action of gravity.

2. The cable-type window regulator according to claim 1, wherein: The lower end surfaces of the two clamp arms are inclined surfaces. When the lower ends of the two clamp arms are closed, the lower end surfaces of the two clamp arms form an inverted V shape that is narrow at the top and wide at the bottom. The clutch pin is cylindrical. When the traction rope winding mechanism is activated and the driving slider is driven by the traction rope to move toward the glass slider which has dropped to the lowest position under the action of gravity, the outer cylindrical surface of the clutch pin contacts the lower end surfaces of the two clamp arms, pushing the two clamp arms to swing against the elastic force of the elastic element, so that the lower ends of the two clamp arms gradually separate, and then the clutch pin enters the clutch hole, and the lower ends of the two clamp arms close again under the elastic force of the elastic element.

3. The rope-type window glass lifter according to claim 2, wherein: A limit block located between the two clamp arms is fixed on the driving slide, and the limit block is symmetrical with the plane where the clamp shaft axis and the clutch pin axis are located.

4. The cable-type window regulator according to claim 1, wherein: The passive component includes a passive component top surface and a passive component bottom surface connected to each other up and down. The bottom surface of the passive component is a spherical surface. A sphere is placed on the bottom surface of the passive component. The active component includes an active component top surface, a sliding rod, and an active component bottom surface. The lower periphery of the active component top surface is connected to the active component bottom surface via a sliding rod passing through the passive component bottom surface. The active component top surface is a spherical surface with a clearance hole in the middle and is located between the passive component top surface and the passive component bottom surface. The diameter of the clearance hole is larger than the diameter of the sphere. A posture sensor housing with an axis extending up and down is fixed to the door frame. The posture sensor housing, the bottom surface of the passive component (which is a spherical surface), and the top surface of the active component (which is a spherical surface) are all coaxial. Both the passive component and the active component can move relative to the posture sensor housing along the axis. A return spring is provided between the active part and the attitude sensor housing, which keeps the active part away from the lower part of the attitude sensor in a normal state; the lower end of the active part is connected to a second pull wire that passes through the attitude sensor housing and is used to pull the active part downward; a wire hole is opened in the center of the upper center of the attitude sensor housing, and the other end of the pull wire passes through the wire hole and is connected to the passive part; when the vehicle body on which the door frame is installed is in a horizontal state, the center of gravity of the sphere is located on the axis of the attitude sensor housing, and when the active part moves along the axis of the attitude sensor housing, the sphere passes through the clearance hole; when the vehicle body and the door frame are in an inclined state, the center of gravity of the sphere deviates from the axis of the attitude sensor housing, and the sphere is located between the top surface of the active part and the bottom surface of the passive part. When the active part moves toward the lower part of the attitude sensor housing along the axis of the attitude sensor housing, the top surface of the active part drives the passive part downward through the sphere and the bottom surface of the passive part, pulling the pull wire one to separate the lower ends of the two clamp arms.

5. The cable-type window regulator according to claim 4, wherein: An adjusting bolt is connected to the center upper end of the attitude sensor housing through a thread, and a wire hole is opened in the center of the adjusting bolt.

6. The cable-type window regulator according to claim 4, wherein: The lower end of the active component has a guide rod that passes through the center of the lower end of the attitude sensor housing. The guide rod is connected to the second pull wire. A return spring surrounds the guide rod and is arranged between the lower end of the active component and the lower end of the attitude sensor housing. A limit ring is provided on the guide rod outside the attitude sensor housing. When the limit ring contacts the attitude sensor housing, the active component is located at the highest position away from the lower part of the attitude sensor housing.

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