Electromagnetic lock and glass lifting driving mechanism comprising same

Abstract

The utility model relates to an electromagnetic lock of a movable vehicle window of a vehicle and a glass lifting driving mechanism electromagnetic lock comprising the same, which comprises an electromagnet, and further comprises a first transmission rod and a second transmission rod which are hinged in sequence and are hinged with a locking pressing block; the locking pressing block is mounted in a manner of rotating around the fixed shaft and is provided with a locking pressing surface; when the electromagnet is electrified, the movable rod is attracted and retracts to drive the locking pressing surface to be separated from the fixed surface; when the electromagnet loses power, the locking pressing block is driven to rotate, the locking pressing face is combined with the fixing face to enter a locking state, the electromagnetic lock provides the technical scheme that fixing is achieved through static friction force, that is, the locking pressing face is combined with the fixing face to enter the locking state, and therefore only one fixing face needs to be provided; therefore, the electromagnetic lock can be fixed at any position of the fixed surface through the combination of the locking pressing surface and the fixed surface at the position, and the electromagnetic lock does not need to be matched with an open hole.

Description

Technical Field

[0001] The utility model belongs to a movable window adjustment system, and more specifically, relates to a movable window adjustment system for a new energy electric vehicle, which is used for performing glass lifting and lowering driving operations. Background Art

[0002] The applicant has applied for Chinese utility model patent 2024201394090 for a glass lifting drive mechanism, which includes: a guide rail having a body extending from the bottom to the top; a linear motor, which includes a stator and a mover, wherein the stator is a magnetic rail, which extends from the bottom to the top and is installed along the length direction of the body of the guide rail; a mounting body, which is fixed on the mover and can be guided by the guide rail, and the glass can be fixed on the mounting body; wherein the linear motor drives the mover relative to the stator to guide the glass to move between the bottom and the top along the guide rail, thereby changing the glass lifting position. A locking mechanism is used in the glass lifting drive mechanism, and the electromagnetic lock of the locking mechanism is used to lock the window glass regulator after reaching a predetermined position. The locking is controlled by the electromagnetic lock. When the motor is in the rising / falling state, the electromagnetic lock is energized and the lock tongue is in the closed state. After running in place, the lock tongue is de-energized and released, and the lock tongue is locked with the guide rail opening. The electromagnetic lock is fixed on the mounting body and moves integrally with the glass. The mounting body has an electromagnetic lock mounting position dedicated to installing it. The electromagnetic lock mounting position is a through hole that penetrates the mounting body, and is provided with clamping holes at the two end positions of the bottom and top of the guide rail. By releasing the lock tongue of the electromagnetic lock, the lock tongue is clamped in the corresponding clamping hole, and the mounting body is locked in a predetermined position. At this time, the glass is also locked in the corresponding position.

[0003] However, the locking mechanism of the above-mentioned glass lifting drive mechanism can only fix the glass in a predetermined position, and the electromagnetic lock must cooperate with the guide rail opening. If there is no guide rail opening, the electromagnetic lock cannot complete the locking operation. The guide rail opening is set at the end of the glass running track. The glass lifting drive mechanism cannot achieve the locking of the glass in the middle of the track during the operation of the glass. Utility Model Content

[0004] The present application is a further modification of the technical solution of utility model patent 2024201394090. In view of the above situation, the utility model provides an electromagnetic lock, including an electromagnet, the electromagnet having a movable rod, the movable rod is attracted and retracted when the electromagnet is energized, and is extended and pushed out when the electromagnet is de-energized; it is characterized in that it also includes: a first transmission rod, which is installed in a manner that can rotate around a pivot axis, one end of the first transmission rod is connected to the end of the movable rod, and the other end is hinged to the end of the second transmission rod; a second transmission rod, one end of which is hinged to the first transmission rod, and the other end is hinged to the locking pressure block; the locking pressure block is installed in a manner that can rotate around a fixed axis, and the locking pressure block has a locking pressure surface; wherein, when the electromagnet is energized, the movable rod is attracted and retracted, and the locking pressure block is driven to rotate by the first transmission rod and the second transmission rod, and the locking pressure surface is separated from the fixed surface; when the electromagnet is de-energized, the movable rod is extended to push the first transmission rod and the second transmission rod to drive the locking pressure block to rotate, and the locking pressure surface is combined with the fixed surface to enter a locked state.

[0005] The electromagnetic lock provides a technical solution that utilizes static friction to achieve fixation, that is, utilizes the locking pressure surface to combine with the fixed surface to enter a locking state. Therefore, only one fixed surface needs to be provided, and the electromagnetic lock can be fixed at any position of the fixed surface by combining the locking pressure surface with the fixed surface at that position, without the need to use an opening to cooperate with the electromagnetic lock.

[0006] Preferably, the electromagnetic lock further comprises: a tension spring, which assists the locking pressure block to rotate when the electromagnet is energized so that the locking pressure surface is separated from the fixed surface.

[0007] The utility model also provides a glass lifting drive mechanism, comprising: a guide rail, which has a guide rail body extending from the bottom to the top; a linear motor, which comprises a stator and a mover, wherein the mover is an excitation structure, and the stator is a magnetic rail, which extends from the bottom to the top and is installed along the length direction of the guide rail body; a mounting body, which is fixed on the mover and can be guided by the guide rail, and the glass can be fixed on the mounting body through a support block; wherein the linear motor drives the mover to move relative to the stator under the action of excitation to guide the glass to move between the bottom and the top along the guide rail, thereby changing the glass lifting position; and further comprising a locking mechanism, wherein the locking mechanism is configured on the mounting body and can fix the mounting body on the guide rail, and the locking mechanism uses an electromagnetic lock as claimed in any one of claims 1 to 4, wherein the guide rail provides a fixed surface, and when the electromagnetic lock is energized, the locking pressure surface is separated from the guide rail fixed surface, and the mounting body can move relative to the guide rail; when the electromagnetic lock is de-energized, the locking pressure surface is combined with the guide rail fixed surface, and the mounting body is fixed relative to the guide rail.

[0008] The glass lifting drive mechanism can stop the glass at any position in the running track by using an electromagnetic lock. The electromagnetic lock provides a method of fixing the glass by using static friction, that is, the locking pressure surface is combined with the guide rail fixing surface to enter a locking state without opening a hole on the guide rail surface.

[0009] Preferably, in the glass lifting drive mechanism, an installation cavity is provided on the installation body, and the locking mechanism is installed in the installation cavity, wherein the electromagnet and the pivot shaft are fixed on the side wall of the installation cavity, and the locking pressure surface is withdrawn into the installation cavity and detached from the guide rail fixing surface when the electromagnetic lock is energized, and the installation body can move relative to the guide rail; when the electromagnetic lock loses power, the locking pressure surface extends from the installation cavity and combines with the guide rail fixing surface, and the installation body is fixed relative to the guide rail.

[0010] Preferably, the glass lifting drive mechanism also includes a tension spring, one end of which is directly or indirectly fixed to the side wall of the installation cavity, and the other end is directly or indirectly fixed to the locking pressure block. When the electromagnet is energized, the tension spring assists the locking pressure block to rotate so that the locking pressure surface is separated from the fixed surface.

[0011] Preferably, in the glass lifting drive mechanism, a fixing surface of the guide rail is provided with a receiving groove, the receiving groove is arranged along the moving track of the electromagnet and is used to receive the electromagnet.

[0012] Preferably, in the glass lifting drive mechanism, the electromagnet is powered by a battery.

[0013] Other beneficial effects of the present invention will be described one by one in the following specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the glass lifting and lowering driving mechanism of the utility model;

[0015] Figure 2 This is a partial enlarged view of the glass lifting and lowering driving mechanism included in the utility model;

[0016] Figure 3 This is a three-dimensional view of the guide rail body of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the utility model from a first perspective including a glass lifting drive mechanism after removing the glass;

[0018] Figure 5 This is a second-view structural diagram of the utility model including the glass lifting drive mechanism after removing the glass;

[0019] Figure 6 This is a front view of the installation body of the utility model;

[0020] Figure 7 For this utility model Figure 6AA direction schematic diagram.

[0021] In the figure: 10 mounting body; 11 battery; 12 mover; 13 fixing buckle; 14 guide flange; 15 stator; 16 guide rail body; 17 receiving groove; 18 position sensor; 20 locking mechanism; 21 electromagnet; 22 side wall; 23 moving rod; 24 first transmission rod; 25 pivot shaft; 26 second transmission rod; 27 hinge block; 28 locking pressure surface; 29 locking pressure block; 30 reading head; 31 magnetic scale; 32 first joint; 33 second joint; R glass moving path. DETAILED DESCRIPTION

[0022] The above and other technical features and functions of the present invention are described in detail below with reference to the attached Figures 1 to 7 The embodiments are described in detail.

[0023] definition:

[0024] Linear motor: Also known as linear motor, it is a motor that can produce linear motion. Its main feature is that it converts electrical energy directly into mechanical energy for linear motion. This process does not require any intermediate conversion mechanism or transmission device. Therefore, compared with the linear motion formed by the conversion device of the rotary motor, its efficiency is higher. During the rotation of the DC motor, excitation is to control the voltage of the stator to change the magnetic field it produces, changing the speed of the DC motor. Changing the excitation also plays a role in changing the speed. Compared with rotary motors, linear motors have the following main features:

[0025] First, the structure is simple. Since the linear motor does not need additional devices to convert the rotary motion into linear motion, the structure of the system itself is greatly simplified, and the weight and volume are greatly reduced.

[0026] Second, the positioning accuracy is high. Where linear motion is required, the linear motor can achieve direct transmission, thereby eliminating various positioning errors caused by the intermediate links. Therefore, the positioning accuracy is high. If microcomputer control is adopted, the positioning accuracy of the entire system can be greatly improved.

[0027] Third, it has fast response speed, high sensitivity and good follow-up performance. It is easy for the linear motor to use magnetic suspension to support its mover, so that a certain air gap is always maintained between the mover and the stator without contact, which eliminates the contact friction resistance between the stator and the mover, thus greatly improving the sensitivity, rapidity and follow-up performance of the system;

[0028] Fourth, it is safe and reliable in operation and has a long service life. Linear motors can achieve contactless force transmission, and the mechanical friction loss is almost zero, so there are few failures and maintenance-free, so it is safe and reliable in operation and has a long service life.

[0029] Photoelectric switch: A photoelectric switch is a type of sensor that converts the intensity change of light between the transmitting end and the receiving end into the change of current to achieve the purpose of detection. Since the output circuit and input circuit of the photoelectric switch are electrically isolated (ie, electrically insulated), it can be used in many occasions.

[0030] Magnetic scale: Magnetic scale is a linear displacement measurement solution commonly used in the field of industrial automation equipment. Because of its strong durability and low environmental requirements, it has gradually replaced the optical linear measurement solution with strict environmental requirements. The magnetic scale is mainly composed of two parts, the magnetic scale and the read head. The magnetic scale is an important component of the magnetic scale displacement sensor, providing a reference for the displacement measurement and position positioning of the sensor. The magnetic scale is composed of a non-magnetic stainless steel belt, a magnetic material, and a protective layer. The read head is a conversion device for magnetic-electric conversion. It converts the magnetization signal recorded on the magnetic scale into an electrical signal and transmits it to the detection circuit to achieve displacement measurement or position positioning. The read head is also a key component of the magnetic scale displacement sensor. It mainly consists of an excitation winding and a signal output winding. The read head converts the detected magnetic signal into a pulse signal through the excitation voltage supplied by the excitation winding for dynamic or static measurement. The read head and the magnetic scale are read through a non-contact installation. The read head senses the change in the magnetic field during the movement along the magnetic scale and converts this magnetic field change into an analog signal or a digital signal output.

[0031] Magnetic cable: Magnetic cable, also known as magnetic charging cable or magnetic charging cable, is a convenient charging and data transmission tool that uses magnetic connection technology to simplify the traditional plug-in and unplug process. The design of the magnetic cable usually includes one or more magnetic heads, which can be tightly adsorbed to the corresponding interface on the device to achieve electrical connection. This design can reduce wear during plugging and unplugging and extend the service life of the cable and device interface. Magnetic cables are widely used in smart wearable devices, 3C digital products, smart homes, car navigation systems, and medical equipment. They use magnetic adsorption to facilitate users to quickly connect and disconnect when charging or transferring data.

[0032] Friction locking: locking using static friction, that is, using static friction. When two objects are in contact and squeezed against each other but relatively still, under the action of external force, if they only have a tendency to slide relative to each other but no relative sliding occurs, the force between their contact surfaces that hinders relative sliding (the friction generated when two objects in contact are about to move relative to each other but have not yet occurred) is called static friction.

[0033] Embodiment 1:

[0034] The present embodiment provides an electromagnetic lock, which has a wide range of applications and provides the technical effect of locking and releasing by using static friction. The electromagnetic lock includes an electromagnet 21, which has a movable rod 23. The movable rod is attracted and retracted when the electromagnet is energized, and extends and pushes out when the electromagnet is de-energized. The electromagnetic lock is characterized in that it also includes: a first transmission rod 24, which is installed in a manner that it can rotate around a pivot shaft 25, one end of the first transmission rod 24 is connected to the end of the movable rod 23, and the other end is hinged to the end of a second transmission rod 26; one end of the second transmission rod 26 is hinged to the first transmission rod 24 is hinged, and the other end is hinged to the locking pressure block 29. The locking pressure block 29 is installed in a manner that it can rotate around the fixed axis, and the locking pressure block 29 has a locking pressure surface 28; wherein, when the electromagnet 21 is energized, the movable rod 23 is attracted and retracted, and the locking pressure block 29 is driven to rotate through the first transmission rod 24 and the second transmission rod 26, and the locking pressure surface 28 is separated from the fixed surface; when the electromagnet 21 loses power, the movable rod 23 extends to push the first transmission rod 24 and the second transmission rod 26 to drive the locking pressure block 29 to rotate, and the locking pressure surface 28 is combined with the fixed surface to enter a locked state.

[0035] The glass lifting drive mechanism can stop the glass at any position in the running track by using an electromagnetic lock. The electromagnetic lock provides a method of fixing by using friction, that is, the locking pressure surface is combined with the guide rail fixing surface to enter a locking state without opening a hole on the guide rail surface.

[0036] Embodiment 2:

[0037] In this embodiment, the application of the electromagnetic lock in the door glass lifting drive mechanism is given. Figure 1 Before explaining the glass lifting drive mechanism, the vehicle door including the same will be explained first. The vehicle door (not shown in the figure) comprises: a door body (not shown in the figure); a vehicle window glass supported to be able to be lifted and lowered along the R line (i.e., the moving path of the glass lifting drive mechanism provided on the door body); and a glass lifting drive mechanism which is assembled to the door body to lift and lower the window glass.

[0038] The door body has a storage portion for storing the window glass and a door window frame disposed above the storage portion. The storage portion has an inner panel on the inside of the vehicle compartment as a door panel and an outer panel (not shown) on the outside of the vehicle compartment, and a door internal space is formed between the inner panel and the outer panel. Figure 1 As shown, the glass lifting and lowering drive mechanism is installed to be inclined toward the rear side in the vehicle front-rear direction relative to the door body.

[0039] The glass lifting drive mechanism includes: a guide rail having a guide rail body 16 extending from the bottom to the top; a linear motor including a stator and a mover, wherein the mover is an excitation structure, and the stator is a magnetic rail extending from the bottom to the top and installed along the length direction of the guide rail body 16;

[0040] The mounting body 10 is fixed on the mover and can be guided by the guide rail, and the glass can be fixed on the mounting body 10 through the support block; wherein, the linear motor drives the mover to move relative to the stator under the action of excitation, which can guide the glass to move between the bottom and the top along the guide rail 22, thereby changing the glass lifting position; compared with the traditional glass lifting drive mechanism using a rotary motor as a power component, the glass lifting drive mechanism using a linear motor has a simple structure and a small size.

[0041] It also includes a locking mechanism, which is configured on the mounting body and can fix the mounting body on the guide rail. It is characterized in that the locking mechanism uses the electromagnetic lock of the aforementioned embodiment, wherein the guide rail provides a fixing surface, and when the electromagnetic lock is energized, the locking pressure surface is disengaged from the guide rail fixing surface, and the mounting body can move relative to the guide rail; when the electromagnetic lock loses power, the locking pressure surface is combined with the guide rail fixing surface, and the mounting body is fixed relative to the guide rail.

[0042] The glass lifting drive mechanism can stop the glass at any position in the running track by using an electromagnetic lock. The electromagnetic lock provides a method of fixing the glass by using static friction, that is, the locking pressure surface is combined with the guide rail fixing surface to enter a locking state without opening a hole on the guide rail surface.

[0043] Embodiment 3:

[0044] In addition to the contents of the above-mentioned embodiments, this embodiment also includes that the electromagnet 21 is powered by a battery.

[0045] The battery 11 is fixed on the mounting body 10 and can supply power to the electromagnet 21 and the linear motor, and is configured to always maintain an electrically conductive state with the electromagnet 21 and the linear motor, regardless of the change in the position of the glass. Since the battery is mounted on the mounting body, the battery becomes a part of the glass lifting drive mechanism and moves with the movement of the mounting body. The battery can be connected to the electromagnet 21 and the linear motor for power supply by a cable. Since the glass lifting drive mechanism has its own energy supply mechanism, the operation of lifting the glass is independent of the power situation of the vehicle, and the operation of lifting the glass can be performed independently, and there will be no problem that the vehicle's battery power is insufficient and the door glass cannot be lifted or lowered.

[0046] The first connector 32 is fixed on the guide rail body 16 and electrically connected to the external power source; the second connector 33 is fixed on the mounting body 10 and electrically connected to the battery 11; wherein, when the first connector 32 and the second connector 33 are connected, the external power source can charge the battery 11. The external power source here refers to a battery other than the glass lifting drive mechanism, such as a battery that provides power to the wheels of an electric car.

[0047] Embodiment 4:

[0048] In this embodiment, the technical means for charging the battery 11 are further described. The glass lifting and lowering driving mechanism includes a magnetic wire.

[0049] In this embodiment, the first joint 32 and the second joint 33 are both arranged on the glass moving path R, and the mounting body 10 moves on the glass moving path R. At the set position, the first joint 32 and the second joint 33 can be electrically connected, and at this time, the external power supply can charge the battery 11.

[0050] Preferably, the mounting body 10 is moved to the end position of the glass raising, and the first joint 32 is connected to the second joint 33. When the glass is fully raised, it is the normal state of the door. In this state, the battery 11 is charged by an external power supply.

[0051] Embodiment 5:

[0052] In addition to the contents of the aforementioned embodiments, the present embodiment includes an installation cavity on the installation body, and the locking mechanism is installed in the installation cavity, wherein the electromagnet 21 and the pivot shaft 25 are both fixed on the side wall 22 of the installation cavity, and when the electromagnetic lock is energized, the locking pressure surface is withdrawn into the installation cavity and detached from the fixed surface of the guide rail, and the installation body can move relative to the guide rail; when the electromagnetic lock is de-energized, the locking pressure surface extends from the installation cavity and combines with the fixed surface of the guide rail, and the installation body is fixed relative to the guide rail. The installation cavity runs through the installation body and also includes a tension spring, one end of which is directly or indirectly fixed to the side wall 22 of the installation cavity, and the other end is directly or indirectly fixed to the locking pressure block 29, which assists the locking pressure block 29 to rotate when the electromagnet 21 is energized so that the locking pressure surface 28 is detached from the fixed surface. The fixed surface of the guide rail is provided with a receiving groove, which is arranged along the moving track of the electromagnet 21 and is used to accommodate the electromagnet 21.

[0053] In this embodiment, one end of the tension spring is fixed on the pivot shaft 25, and the other end is fixed at the hinge between the second transmission rod 26 and the locking pressure block 29. When the electromagnet loses power, the locking pressure block 29 rotates the locking pressure surface 28 to engage with the fixed surface. At this time, the tension spring is in an extended state. When the electromagnet 21 is energized and the moving rod 23 is attracted and retracted, the tension spring contracts to assist the locking pressure block to rotate so that the locking pressure surface is separated from the fixed surface.

[0054] The above-mentioned installation method installs the locking mechanism in the installation cavity, which is conducive to saving installation space, and uses the tension spring to improve the reliability of operation, which is suitable for the narrow installation conditions of the vehicle door.

[0055] Embodiment 6:

[0056] In addition to the contents of the above embodiments, the glass lifting drive mechanism in this embodiment further describes the auxiliary locking components, that is, the photoelectric switches and magnetic scales are installed at both ends of the bottom and top to monitor the position of the mover in real time.

[0057] The glass lifting and lowering driving mechanism also includes a photoelectric position sensor, which includes a detection plate, a first position sensor located at the top and a second position sensor located at the bottom respectively, and the detection plate can be detected by the first position sensor and the second position sensor.

[0058] The glass lifting drive mechanism also includes a magnetic scale, which includes a magnetic scale and a reading head. The reading head is fixed on the mounting body. The magnetic scale extends from the bottom to the top and is installed along the length direction of the guide rail body.

[0059] The principles and methods of the photoelectric switch and the magnetic scale have been described above. Those skilled in the art will appreciate that it is also possible to use either the photoelectric switch or the magnetic scale alone as the auxiliary locking element.

[0060] The above description is only for illustrating the present invention, and it should be understood that the present invention is not limited to the above embodiments, and various variations that conform to the concept of the present invention are within the protection scope of the present invention.

Claims

1. An electromagnetic lock, comprising an electromagnet (21), wherein the electromagnet (21) has a movable rod (23), which is attracted and retracted when the electromagnet is energized, and is extended and pushed out when the electromagnet is de-energized; characterized in that Also includes: A first transmission rod (24) is installed in a manner that it can rotate around a pivot axis (25), one end of the first transmission rod (24) is connected to the end of the moving rod (23), and the other end is hinged to the end of the second transmission rod (26); A second transmission rod (26), one end of which is hinged to the first transmission rod (24), and the other end of which is hinged to the locking pressure block (29); A locking pressure block (29) is installed in a manner that allows it to rotate around a fixed axis, and the locking pressure block (29) has a locking pressure surface (28); When the electromagnet (21) is energized, the movable rod (23) is attracted and retracted, and the locking pressure block (29) is driven to rotate through the first transmission rod (24) and the second transmission rod (26), and the locking pressure surface (28) is separated from the fixed surface; when the electromagnet (21) is de-energized, the movable rod (23) is extended to push the first transmission rod (24) and the second transmission rod (26), thereby driving the locking pressure block (29) to rotate, and the locking pressure surface (28) is combined with the fixed surface to enter a locking state.

2. The electromagnetic lock according to claim 1, characterized in that: Also includes: A tension spring assists the locking pressure block (29) to rotate when the electromagnet (21) is energized, so that the locking pressure surface (28) is separated from the fixed surface.

3. Glass lifting drive mechanism, including: A guide rail having a guide rail body extending from the bottom to the top; a linear motor comprising a stator and a mover, wherein the mover is an excitation structure, and the stator is a magnetic rail extending from the bottom to the top and installed along the length direction of the guide rail body; A mounting body, which is fixed on the mover and can be guided by the guide rail, and the glass can be fixed on the mounting body through a support block; wherein the linear motor drives the mover to move relative to the stator under the action of excitation to guide the glass to move between the bottom and the top along the guide rail, thereby changing the lifting position of the glass; It also includes a locking mechanism, which is configured on the mounting body and can fix the mounting body on the guide rail. It is characterized in that the locking mechanism uses an electromagnetic lock as claimed in any one of claims 1-2, wherein the guide rail provides a fixing surface, and when the electromagnetic lock is energized, the locking pressure surface is disengaged from the guide rail fixing surface, and the mounting body can move relative to the guide rail; when the electromagnetic lock loses power, the locking pressure surface is combined with the guide rail fixing surface, and the mounting body is fixed relative to the guide rail.

4. The glass lifting and lowering driving mechanism according to claim 3, characterized in that: The mounting body is provided with a mounting cavity, and the locking mechanism is mounted in the mounting cavity, wherein the electromagnet (21) and the pivot shaft (25) are both fixed on the side wall (22) of the mounting cavity. When the electromagnetic lock is energized, the locking pressure surface is withdrawn into the mounting cavity and detached from the guide rail fixing surface, and the mounting body can move relative to the guide rail; when the electromagnetic lock is de-energized, the locking pressure surface extends from the mounting cavity and combines with the guide rail fixing surface, and the mounting body is fixed relative to the guide rail.

5. The glass lifting and lowering driving mechanism according to claim 4, characterized in that: It also includes a tension spring, one end of which is directly or indirectly fixed to the side wall (22) of the installation cavity, and the other end of which is directly or indirectly fixed to the locking pressure block (29). When the electromagnet (21) is energized, the tension spring assists the locking pressure block (29) in rotating so that the locking pressure surface (28) is separated from the fixed surface.

6. The glass lifting and lowering driving mechanism according to claim 3, characterized in that: The fixed surface of the guide rail is provided with a receiving groove, which is arranged along the moving track of the electromagnet (21) and is used to receive the electromagnet (21).

7. The glass lifting and lowering driving mechanism according to claim 3, characterized in that: The electromagnet (21) is powered by a battery.

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