Straight arm door opener capable of being self-locked and manually opened after power failure

Abstract

The utility model relates to the technical field of automatic door openers, in particular to a straight arm door opener capable of being self-locked and manually opened after power failure. Comprising a power unit, a telescopic unit, a release unit and a control system. The power unit is connected with the telescopic unit through the release unit, the telescopic unit is connected to a door body, and the power unit drives the telescopic unit to stretch out and draw back and further drives the door body to be opened and closed. In a power-off state, the power unit is short-circuited through the control system and maintains the counter-acting force to the telescopic unit; the release unit can disconnect the connection structure of the power unit and the telescopic unit through external unlocking, and the problems that unsafety is caused due to the fact that the door body cannot be locked after power failure and manual opening cannot be achieved in emergency are solved. And the self-locking function of the straight-arm door opener in the power-off state and the effect of convenient operation of manual unlocking are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automatic door opener, especially to a straight arm door opener which can be self-locked and manually opened after power failure. BACKGROUND

[0002] In large swing door application scenarios, traditional straight arm door openers face many safety hazards after power supply interruption. These large doors are usually used in warehouses, factories, large shopping malls and other places, and their safety and reliability are crucial for protecting property and personnel safety.

[0003] The existing traditional straight arm door opener often cannot maintain the effective locking state of the door body after power failure, mainly because many traditional designs rely on power to drive the locking mechanism. Once the power is off, these mechanisms fail, leaving the door body in an unlocked state. In this case, unauthorized personnel can easily break in, posing a serious threat to valuable items or equipment stored behind the large swing door.

[0004] In addition, in emergency situations such as fires, earthquakes and other emergencies, power interruption is a common phenomenon. For large swing door scenarios, if the door opener lacks a manual unlocking function, users may face difficulties in quickly opening the door body during escape. This not only exacerbates panic, but also may delay valuable emergency response time, increasing the risk of casualties.

[0005] More seriously, some traditional door openers have locking functions even after power failure, but their locking mechanisms may not be stable enough and are easily damaged by external forces. In large swing door application scenarios, this safety hazard is particularly deadly, because once the door is damaged, the consequences will be catastrophic. At the same time, the lack of manual unlocking function or complex operation also limits the user's self-rescue ability in emergency situations. SUMMARY

[0006] The utility model aims at the defects in the prior art to provide a straight arm door opener which can be self-locked and manually opened after power failure, solving the problem of unsafe door body locking after power failure and the inability to manually open the door in emergency situations, and achieving the effects of self-locking function and convenient manual unlocking operation of the straight arm door opener in power failure state.

[0007] In order to achieve the above object, the utility model adopts the technical scheme: a straight arm door opener which can be self-locked after power failure and manually opened, comprising a power unit, a telescopic unit, a release unit and a control system; the power unit is connected with the telescopic unit through the release unit, the telescopic unit is connected to a door body, the power unit drives the telescopic unit to extend and retract and further drives the door body to open and close; the power unit is short-circuited and maintains the reaction force on the telescopic unit under power failure through the control system; the release unit can disconnect the connection between the power unit and the telescopic unit by external unlocking.

[0008] Further, the power unit comprises a motor, a planetary reducer and an output shaft, the output shaft is engaged with the telescopic unit, the release unit comprises a fixed rod, a sliding plate surface and an unlocking mechanism, a spring is arranged between the fixed rod and the sliding plate surface, the motor is fixed on the sliding plate surface, after the unlocking mechanism is unlocked, the spring pushes the sliding plate surface to drive the motor to disengage the output shaft from the telescopic unit.

[0009] Further, the unlocking mechanism is arranged on the fixed plate surface at one end of the release unit, the unlocking mechanism comprises an unlocking knob and an unlocking block, the length of the unlocking block is greater than its width, the unlocking block abuts against the output shaft of the motor to engage the telescopic unit, after the unlocking knob rotates the unlocking block, the spring pushes the sliding plate surface to drive the motor to disengage the output shaft from the telescopic unit.

[0010] Further, the telescopic unit comprises a ball screw, a thrust bearing and an engagement connecting piece, the output shaft is engaged with the engagement connecting piece and connected with the ball screw through the thrust bearing, the motor rotates to drive the ball screw to extend and retract and further drive the door body to open and close, the thrust bearing is arranged outside the fixed plate surface at the other end of the release unit, the engagement connecting piece is arranged inside, and the two are connected through the fixed plate surface.

[0011] Further, the output shaft and the engagement connecting piece are respectively provided with engagement bevel gears at the engagement positions.

[0012] Further, the surface of the unlocking block is provided with a pressing circular arc surface at the position in contact with the motor.

[0013] Further, a shell is further arranged, and the motor, the planetary reducer, the output shaft, the ball screw, the thrust bearing, the engagement connecting piece and the release unit are arranged in the shell.

[0014] Further, the unlocking knob can drive the unlocking block to be unlocked through a backup power supply. Attached Figure Description

[0015] 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 recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is an internal schematic diagram of a straight arm door opener that can be self-locked and manually opened after a power outage, according to the present invention.

[0017] Figure 2 This is an internal top view of a straight arm door opener that can be self-locked and manually opened after a power outage, according to this utility model.

[0018] Figure 3 This is a schematic diagram of the unlocking mechanism of this utility model;

[0019] Figure 4 This is an external schematic diagram of a straight arm door opener that can be self-locked and manually opened after a power outage, according to the present invention.

[0020] Figure label:

[0021] Power unit 1, motor 1-1, output shaft 1-2, telescopic unit 2, ball screw 2-1, thrust bearing 2-2, meshing connector 2-3, release unit 3, fixed rod 3-1, sliding plate 3-2, unlocking mechanism 3-3, rotary unlocking knob 3-3-1, unlocking screw block 3-3-2, spring 3-4, fixed plate 3-5, outer shell 4. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] In the description of this utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inner", and "outer" are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] A straight-arm door opener that can self-lock and be manually opened after a power outage, such as... Figures 1-3As shown, it comprises a power unit 1, a telescopic unit 2, a release unit 3 and a control system; the power unit 1 is connected with the telescopic unit 2 through the release unit 3, the telescopic unit 2 is connected to the door body, the power unit 1 drives the telescopic unit 2 to extend and retract and further drives the door body to open and close; in the power-off state, the power unit 1 is short-circuited by the control system and maintains the reaction force on the telescopic unit 2; the release unit 3 can disconnect the connection between the power unit 1 and the telescopic unit 2 by external unlocking.

[0025] Specifically, the power unit 1, the telescopic unit 2 and the release unit 3 are integrated together, so that the whole door opener structure is compact, occupies small space, is convenient to install and maintain, the power unit 1 is connected with the telescopic unit 2 through the release unit 3, which ensures the efficiency and stability of power transmission, makes the opening and closing action of the door body more stable and reliable, in the power-off state, the power unit 1 is short-circuited and maintains the reaction force on the telescopic unit 2, realizes the self-locking function of the door body, effectively prevents external illegal intrusion, improves the safety, the release unit 3 can disconnect the connection between the power unit 1 and the telescopic unit 2 by external unlocking, so that in the power-off or emergency situation, the door body can be easily unlocked by manual operation, improves the practicability and flexibility of the equipment, through the integrated design, power-off self-locking and manual unlocking and other innovative technologies, the self-locking and manual opening functions of the straight arm door opener in the power-off state are realized, the blank of the prior art is filled, the power-off self-locking function effectively prevents external illegal intrusion, improves the safety of the door body, is suitable for places that need high safety, the manual unlocking function makes the user can unlock the door body by simple manual operation in the power-off or emergency situation, improves the practicability and emergency handling capacity of the equipment, the highly integrated structure makes the whole door opener structure compact, occupies small space, is convenient to install and maintain, reduces the use cost.

[0026] As a preferred embodiment of the above embodiment, as Figures 1-3 As shown, the power unit 1 comprises a motor 1-1 and its planetary reducer, an output shaft 1-2, the output shaft 1-2 is engaged with the telescopic unit 2, the release unit 3 comprises a fixed rod 3-1, a sliding plate surface 3-2 and an unlocking mechanism 3-3, a spring 3-4 is arranged between the fixed rod 3-1 and the sliding plate surface 3-2, the motor 1-1 is fixed on the sliding plate surface 3-2, after the unlocking mechanism 3-3 is unlocked, the spring 3-4 pushes the sliding plate surface 3-2 to drive the motor 1-1 to make the output shaft 1-2 disengage from the engagement connection with the telescopic unit 2.

[0027] Specifically, the motor 1-1 in the power unit 1 is connected with the telescopic unit 2 through the output shaft 1-2 after the torque is increased through the planetary reducer, so that the power is efficiently transmitted, and the door body is stably opened and closed. The design of the output shaft 1-2 makes the connection between the power unit 1 and the telescopic unit 2 more compact, facilitating the integrated design of the whole door opener. The spring 3-4 in the release unit 3 is arranged between the fixed rod 3-1 and the sliding plate surface 3-2. When the unlocking mechanism 3-3 is unlocked, the spring 3-4 can automatically push the sliding plate surface 3-2 and the motor 1-1 to move, so that the output shaft 1-2 is disconnected with the telescopic unit 2, realizing quick and convenient unlocking operation. The power unit 1, the telescopic unit 2 and the release unit 3 are integrated together, which not only has a compact structure, but also realizes the dual functions of power-off self-locking and manual unlocking.

[0028] As a preferred embodiment of the above, as shown in Figures 1-3 The unlocking mechanism 3-3 is arranged on the fixed plate surface 3-5 of one end of the release unit 3, and the unlocking mechanism 3-3 includes an unlocking knob 3-3-1 and an unlocking block 3-3-2. The length of the unlocking block 3-3-2 is greater than its width, and the unlocking block 3-3-2 abuts against the output shaft 1-2 of the motor 1-1 to engage the telescopic unit 2. After the unlocking knob 3-3-1 rotates the unlocking block 3-3-2, the spring 3-4 pushes the sliding plate surface 3-2 to drive the motor 1-1 to disconnect the output shaft 1-2 from the telescopic unit 2.

[0029] Specifically, the unlocking mechanism 3-3 is arranged on the fixed plate surface 3-5 of the release unit 3. The user can drive the unlocking block 3-3-2 by rotating the unlocking knob 3-3-1, and then realize the unlocking operation, so that the unlocking process is simple and fast, and the practicability of the equipment is improved. The length of the unlocking block 3-3-2 is greater than its width, which not only effectively abuts against the engagement between the output shaft 1-2 of the motor 1-1 and the telescopic unit 2, but also smoothly releases the connection after rotation, without occupying too much space. After the unlocking block 3-3-2 rotates, the spring 3-4 can automatically push the sliding plate surface 3-2 and the motor 1-1 to move, so that the output shaft 1-2 is disconnected from the telescopic unit 2. Not only the stability of unlocking is ensured, but also the reliability of the equipment is improved.

[0030] As a preferred embodiment of the above, as shown in Figures 1-3As shown, the telescopic unit 2 includes a ball screw 2-1, a thrust bearing 2-2, and an engagement connector 2-3, the output shaft 1-2 is engaged with the engagement connector 2-3 and connected with the ball screw 2-1 via the thrust bearing 2-2, the motor 1-1 rotates to drive the telescopic movement of the ball screw 2-1, and further drives the opening and closing of the door body, the thrust bearing 2-2 is arranged outside the fixed plate surface 3-5 at the other end of the release unit 3, and the engagement connector 2-3 is arranged inside, both of which are connected through the fixed plate surface 3-5.

[0031] Specifically, the telescopic unit 2 adopts the ball screw 2-1 structure, the thrust bearing 2-2 is connected with the output shaft 1-2, and the engagement connector 2-3 is engaged with the output shaft 1-2, which not only ensures efficient transmission of power, but also realizes precise control of the opening and closing of the door body, improves the stability and reliability of the equipment, and the setting of the thrust bearing 2-2 reduces the friction loss between the output shaft 1-2 and the ball screw 2-1, further improves the transmission accuracy and stability of the equipment, and due to the characteristics of the straight arm door opener, the thrust bearing 2-2 is selected here to further ensure the connection strength and improve the overall durability and reliability of the device. The combination of the telescopic unit 2 and the fixed plate surface 3-5 of the release unit 3 not only realizes efficient transmission of power, but also ensures the stability and reliability of the structure, the engagement connector 2-3 and the thrust bearing 2-2 are arranged inside and outside the fixed plate surface 3-5 of the release unit 3 respectively, this modular design makes it easier to disassemble and replace each component, reducing maintenance difficulty and cost, and by using high-precision components such as ball screws 2-1 and thrust bearings 2-2, the transmission accuracy and carrying capacity of the equipment are improved, making the opening and closing of the door body more stable and reliable.

[0032] As a preferred embodiment of the above, as shown in Figures 1-3 As shown, the engagement position of the output shaft 1-2 and the engagement connector 2-3 is respectively provided with an engagement helical tooth.

[0033] Specifically, by setting the engagement helical tooth at the engagement position of the output shaft 1-2 and the engagement connector 2-3, the torque can be transmitted more effectively, the power loss is reduced, and the transmission accuracy and stability are improved, the design of the helical tooth makes the tooth surface contact more uniform, reduces the tooth surface wear, and prolongs the service life of the component, the engagement mode of the helical tooth has better self-locking performance than the straight tooth, which can prevent the engagement from loosening due to vibration or load changes to a certain extent. In addition, the helical tooth has stronger carrying capacity and can better adapt to the demand of large torque and complex working conditions.

[0034] As a preferred embodiment of the above, as shown in Figures 1-3 As shown, the surface of the unlocking rotary block 3-3-2 is provided with an extrusion circular arc surface at the contact position with the motor 1-1.

[0035] Specifically, by setting the extrusion arc surface in contact with the surface of the unlocking rotating block 3-3-2 and the motor 1-1, the direct contact area between the two can be reduced during the rotation unlocking process, thereby reducing the friction and wear degree, helping to prolong the service life of the motor 1-1 and the unlocking rotating block 3-3-2, improve the durability of the equipment, and the design of the extrusion arc surface makes the unlocking rotating block 3-3-2 more smoothly push the motor 1-1 to move when rotating, reducing the lag and resistance, and also enhancing the structural stability between the unlocking rotating block 3-3-2 and the motor 1-1 to a certain extent, preventing loosening or damage caused by vibration or load change, and helping to improve the stability and reliability of the entire door opener system.

[0036] As a preferred embodiment of the above, as shown in Figure 4 The motor 1-1 and its planetary reducer, the output shaft 1-2, the ball screw 2-1, the thrust bearing 2-2, the meshing connecting piece 2-3 and the release unit 3 are all arranged in the shell 4.

[0037] As a preferred embodiment of the above, as shown in Figure 4 The unlocking knob 3-3-1 can drive the unlocking rotating block 3-3-2 to unlock through the backup power supply.

[0038] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A straight-arm door opener that can self-lock and be manually opened after a power outage, characterized in that: It includes a power unit (1), a telescopic unit (2), a release unit (3), and a control system; The power unit (1) is connected to the telescopic unit (2) through the release unit (3), and the telescopic unit (2) is connected to the door. The power unit (1) drives the telescopic unit (2) to extend and retract, and further drives the door to open and close. In the power-off state, the power unit (1) is short-circuited through the control system and maintains the reaction force on the telescopic unit (2); The release unit (3) can be externally unlocked to disconnect the power unit (1) from the telescopic unit (2).

2. The straight arm door opener that can be self-locked and manually opened after a power failure, as described in claim 1, is characterized in that... The power unit (1) includes a motor (1-1) and its planetary reducer, and an output shaft (1-2). The output shaft (1-2) meshes with the telescopic unit (2). The release unit (3) includes a fixed rod (3-1), a sliding plate (3-2), and an unlocking mechanism (3-3). A spring (3-4) is provided between the fixed rod (3-1) and the sliding plate (3-2). The motor (1-1) is fixed on the sliding plate (3-2). After the unlocking mechanism (3-3) is unlocked, the spring (3-4) pushes the sliding plate (3-2) to drive the motor (1-1) so that the output shaft (1-2) disengages from the telescopic unit (2).

3. A straight arm door opener that can be self-locked and manually opened after a power failure, as described in claim 2, is characterized in that... The unlocking mechanism (3-3) is located on the fixed plate (3-5) at one end of the release unit (3). The unlocking mechanism (3-3) includes an unlocking knob (3-3-1) and an unlocking block (3-3-2). The length of the unlocking block (3-3-2) is greater than its width. The unlocking block (3-3-2) abuts against the motor (1-1) so that the output shaft (1-2) engages with the telescopic unit (2). After the unlocking knob (3-3-1) rotates the unlocking block (3-3-2), the spring (3-4) pushes the sliding plate (3-2) to drive the motor (1-1) so that the output shaft (1-2) disengages from the telescopic unit (2).

4. A straight arm door opener that can be self-locked and manually opened after a power failure, as described in claim 3, is characterized in that... The telescopic unit (2) includes a ball screw (2-1), a thrust bearing (2-2), and a meshing connector (2-3). The output shaft (1-2) meshes with the meshing connector (2-3) and is connected to the ball screw (2-1) via the thrust bearing (2-2). The motor (1-1) rotates to drive the ball screw (2-1) to telescopically move, and further drives the door to open and close. The thrust bearing (2-2) is located on the outside of the fixed plate (3-5) at the other end of the release unit (3), and the meshing connector (2-3) is located on the inside. The two are connected through the fixed plate (3-5).

5. A straight arm door opener that can be self-locked and manually opened after a power failure, as described in claim 4, is characterized in that... The output shaft (1-2) and the meshing connector (2-3) are each provided with meshing helical teeth at their meshing positions.

6. A straight arm door opener that can be self-locked and manually opened after a power failure, as described in claim 3, is characterized in that... The surface of the unlocking screw (3-3-2) is provided with a compression arc surface at the contact position with the motor (1-1).

7. A straight arm door opener that can be self-locked and manually opened after a power failure, as described in claim 4, is characterized in that... It is also provided with a housing (4), and the motor (1-1) and its planetary reducer, the output shaft (1-2), the ball screw (2-1), the thrust bearing (2-2), the meshing connector (2-3) and the release unit (3) are all disposed in the housing (4).

8. A straight arm door opener that can be self-locked and manually opened after a power failure, as described in claim 4, is characterized in that... The unlocking knob (3-3-1) can be driven by a backup power source to unlock the unlocking knob (3-3-2).

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