Novel free positioning locking device for sliding rail electric door closer

Abstract

The application discloses a novel sliding rail electric door closer free positioning locking device, which comprises a shell frame and a door closer locking device, wherein the shell is internally provided with a locking plate, telescopic electromagnets, a main body support frame, buffer springs and buffer bolts which are used in cooperation to make the sliding block locking more stable and reliable, and the two electromagnets cooperate to make the door closer realize full-automatic function. The application has two modes, i.e. manual mode and automatic mode. In the manual mode, the sliding block is released by rotating the manual knob, and the door is automatically closed. In the automatic mode, the pressing plate is automatically reset by electrifying the lower electromagnet, and the sliding block is locked by moving the sliding block clamping groove to the pressing plate clamping column position. When a fire occurs, the telescopic electromagnet is electrified by receiving a signal, the telescopic guide rod is retracted, the sliding block is released, and the door is closed. The locking plate and the main body support frame are pressed against the sliding rail, the position of the main body support frame can be freely adjusted and fixed, and the opening and closing angle of the fire door is adjusted, and the structure between the pressing plate and the sliding block is optimized to increase the stability of the electric door closer structure.

Description

TECHNICAL FIELD

[0001] The present application relates to a new type of sliding rail electric door closer free positioning locking device. BACKGROUND

[0002] The current popular door closer is normally closed, and is usually installed on fireproof doors. The door closer can keep the fireproof door closed at any time. However, in places with large flow of people, the normally closed door closer greatly affects the convenience of people passing through. In addition, due to the use of general fixing measures, the door closer cannot be closed in time, so there is a lack of reasonable measures to keep the fireproof door open. During installation, the door closing speed valve and the door locking speed valve need to be adjusted multiple times to obtain appropriate door closing and locking speeds, which is not convenient for completing the installation within a short time.

[0003] The existing electric door closer has the problems of complex structure, large size, which leads to large size of the sliding rail, inconvenience for installation on some narrow door frames, poor working stability caused by long-term power supply, etc. In terms of function, when the fireproof door is open, the electromagnet needs to be powered for a long time, and the electromagnet is easy to be attracted and trigger the open state during the opening process. Manual resetting is required, which increases the workload. At the same time, manual and automatic door closing mode switching cannot be completed, so the operation convenience is poor, and the ideal opening and closing effect cannot be achieved. Therefore, it is necessary to further improve. SUMMARY

[0004] The purpose of the present application is to provide a new type of sliding rail electric door closer free positioning locking device, which optimizes the installation structure and connection structure of the locking plate, the pressing plate, the sliding block and the main support frame, so as to freely adjust the opening and closing angle of the fireproof door, and further make the connection structure of the electric door closer more stable.

[0005] The present application is realized by the following technical scheme: a new type of sliding rail electric door closer free positioning locking device, comprising: a pressing plate, a sliding rail, a downward pressing guide rod, a sliding block, a main support frame installed in the sliding rail and a locking plate located above the main support frame, a telescopic electromagnet is installed on the main support frame, the telescopic electromagnet is connected with a telescopic rod, a telescopic spring is sleeved on the telescopic rod, a locking tongue is fixed on the telescopic rod through screw connection, a spring is arranged on the downward pressing guide rod of the downward pressing electromagnet, the downward pressing electromagnet is installed on the upper side of the middle of the main support frame, the lower side of the downward pressing guide rod is the left side of the pressing plate, the pressing plate is connected with a buffer bolt on the main support frame through a rotating pin, a cylindrical protrusion is arranged on the right side of the pressing plate, and a cylindrical groove is arranged on the lower end of the sliding block.

[0006] Four cross screws are arranged on the locking plate, the cross screws pass through the locking plate and are fixed on the upper surface of the left side of the main support frame, the locking plate and the upper surface of the main support frame sandwich the track of the shell frame, and the two side protruding parts of the upper surface of the main support frame are matched with the upper side sliding groove of the shell frame.

[0007] The telescopic spring is installed on the telescopic rod, one end of the telescopic spring is in contact with the telescopic electromagnet, and the other end of the telescopic spring is in contact with the manual switch.

[0008] The lock tongue is fixed in the telescopic rod through threaded connection, and the upper surface of the lock tongue is processed as a guide slope.

[0009] The pressing plate is connected with the pressing plate frame through a rotating pin, the pressing plate frame is fixed on the main body support frame through six buffer bolts, buffer springs are arranged on the buffer bolts, the upper side of the buffer spring is in contact with the lower surface of the pressing plate frame, and the lower side of the buffer spring is in contact with the upper surface of the pressing plate frame.

[0010] The lower sides of the two sides of the main body support frame are processed as sliding ways, and the two sides of the sliding ways are matched with the sliding grooves in the lower side of the shell frame.

[0011] The lower end of the pressing electromagnet is provided with a pressing guide rod, a spring is arranged on the pressing guide rod, one side of the spring is in contact with the pressing electromagnet, and the other side of the spring is in contact with the elastic gasket.

[0012] The bottom of the sliding block is provided with a cylindrical clamping groove, the lower left end of the sliding block is provided with a guide slope, sliding grooves are formed in the two sides of the sliding block and matched with the sliding rails of the shell frame, and threaded holes are formed in the upper side of the sliding block and used for being connected with the connecting rod.

[0013] The technical effects achieved by the application are as follows:

[0014] The application is a novel structure, the buffer spring and the buffer bolt are used in cooperation, the sliding block locking is more stable and reliable, and the cooperation of the two electromagnets realizes the full-automatic locking and unlocking functions of the door closer locking device.

[0015] The application has two modes, namely a manual mode and an automatic mode, in the manual mode, the manual switch is actuated to release the sliding block and automatically close the door, in the automatic mode, the pressing plate is automatically reset by the pressing electromagnet, the sliding block clamping groove is locked at the position of the pressing plate clamping column, and the door is in an open state, when a fire occurs, the telescopic electromagnet receives a signal, is powered on, the telescopic guide rod is retracted, the sliding block is released, and the door is closed.

[0016] The sliding rail is pressed by the locking plate and the cross lock, the position of the fixed main body support frame is adjusted, and then the opening and closing angle of the fire door is adjusted, and the structure between the pressing plate and the sliding block is optimized, so that the stability of the electric door closer structure is increased. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is an assembly schematic view of the application, namely a novel sliding rail electric door closer free positioning locking device.

[0018] Figure 2 This is a schematic diagram of the internal structure of the novel sliding rail electric door closer free positioning and locking device described in the invention.

[0019] Figure 3 This is a schematic diagram of the assembly cross-sectional structure of the novel sliding rail electric door closer free positioning and locking device described in the invention; 739509510

[0020] Figure 4 A detailed schematic diagram of the main support frame of the novel sliding rail electric door closer free positioning and locking device described in the invention;

[0021] Figures 5-6 This is a schematic diagram illustrating the operation of a novel sliding rail electric door closer's free positioning and locking device.

[0022] In the diagram: 1. Housing frame, 101. Upper slide groove, 102. Lower slide groove, 103. Slide rail, 2. Locking plate, 3. Cross screw, 4. Manual lever, 5. Downward pressing electromagnet, 6. Slider screw hole, 7. Slider, 8. Main support frame, 9. Telescopic electromagnet, 10. Telescopic rod, 11. Telescopic spring, 12. Downward pressing guide rod, 13. Buffer spring, 14. Buffer bolt, 15. Rotating pin, 16. Pressure plate spring, 17. Pressure plate, 18. Slide groove, 19. Locking tongue, 20. Pressure plate frame. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0025] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] In the description of the embodiments of the present invention, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention 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 limiting the present invention.

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] The sliding rail electric door closer includes a sliding rail 103, a slider 7, a pressure plate 17, and a pressing electromagnet 5, all mounted on a main support frame 8 inside the housing frame 1. The cross screws 3 clamp the sliding rail 103 on the housing frame 1 through the main support frame 8 and the locking plate 2. The protruding portions on both sides of the upper surface of the main support frame 8 engage with the upper sliding groove 101 of the housing frame. First, loosen the four cross screws 3, releasing the sliding rail 103 from the housing frame 1. Then, move the locking plate 2, causing the main support frame 8 to move left and right as a whole. The main support frame 8 has sliding tracks on both sides below, which engage with the lower sliding groove 102 of the housing frame 1. The main support frame 8 moves along the housing frame 1, and its position represents the door's opening angle. When the main support frame 8 is partially moved to the appropriate position, tighten the four cross screws 3, fixing the main support frame 8 and all components on it.

[0029] A telescopic electromagnet 9 is installed on the lower side of the main support frame 8. The telescopic electromagnet 9 is connected to a telescopic rod 10. A locking tongue 19 is installed on the right end of the telescopic rod 10 through a threaded connection. A manual lever 4 is installed on the locking tongue. A telescopic spring 11 is installed between the telescopic rod 10 and the manual lever 4. When the manual lever 4 is moved to the left, it causes the locking tongue 19 to retract to the left.

[0030] The pressure plate 17 is installed in the main support frame 8 by a rotating pin 15 and a buffer bolt 13. The lower end of the pressing electromagnet 5 is equipped with a pressing guide rod 12 and a spring. The slider 7 is arranged on the slide rail 103 and is located at the right end of the main support frame 8.

[0031] The sliding grooves 18 on both sides of the slider 7 cooperate with the slide rails 103 on the housing frame. The slider 7 is installed on the slide rails 103 and can move left and right. The slider 7 has a slider screw hole 6 on the top for connecting with the door closer linkage. The slider 7 has a cylindrical buckle at the bottom, which keeps the fire door in the open state by buckling with the right end of the pressure plate 17. When the slider 7 is not buckled with the pressure plate 17, it moves to the right to close the fire door. The lower left of the slider 7 has a certain slope, which plays a guiding role, so that the pressure plate 17 can move along the slope to the buckle and buckle when the slider 7 moves to the left.

[0032] The pressure plate 17 is fixed inside the main support frame 8 by the rotating pin 15 and the buffer bolt 14. There is a buffer spring 13 between the buffer bolt 14 and the main support frame 8. The purpose of the buffer bolt 14 and the buffer spring 13 is to enable the inclined surface of the slider to be locked in the cylindrical groove of the slider 7 along the right cylindrical buckle of the pressure plate 17 from right to left. When the inclined surface of the slider 7 moves to the left along the right cylindrical buckle of the pressure plate 17, the pressure plate frame 20 is pressed down by the buffer spring 13 until the slider 7 is locked by the pressure plate 17. The pressure plate frame 20 enables the pressure plate 17 to have the required rotation stroke while greatly reducing the friction between the parts during rotation.

[0033] When the telescopic electromagnet 9 is not energized, the locking tongue 19 is in the extended state, with the right end of the locking tongue 19 having an upward slope. When the pressing electromagnet is not energized, the pressing guide rod 12 remains in a normally retracted state under the action of the spring, the left side of the pressure plate 17 tilts upward, and the pressure plate spring 16 connected to the lower side of the pressure plate 17 is in a relaxed state. The pressure plate spring 16 is installed in the pressure plate spring mounting hole of the main support frame 8, and the slider 7 is in the unlocked state. Before the slider 7 moves into the cylindrical slot of the pressure plate 17, the pressing electromagnet 5 is energized, the pressing guide rod 12 extends, abuts against the upper side of the pressure plate 17, and presses downward along the slope of the locking tongue 19 until the left side of the pressure plate 17 is completely pressed under the locking tongue. When the pressure plate spring 16 is in a compressed state, the downward electromagnet 5 is de-energized, and the downward guide rod 12 retracts. When the door closer is in the normally open mode, the slider 7 moves from right to left, and the cylindrical slot of the slider 7 is engaged with the cylindrical post on the right side of the pressure plate 17. When a fire occurs, the telescopic electromagnet 9 receives a signal and is energized. The telescopic rod 10, along with the locking tongue 19, retracts, and the pressure plate spring 16 connected below the pressure plate 17 changes from a compressed state to a relaxed state. The left side of the pressure plate 17 is lifted, and the right end of the pressure plate 7 disengages from the latch below the slider 7. The locking state of the slider 7 is released, the slider 7 is released, the door closer ends the normally open mode, the slider 7 moves to the right, and the door closes automatically.

[0034] When manual closing is required, the manual lever 4 can be moved to the left to retract the latch 19 to the left. The pressure plate spring 16 connected below the pressure plate 17 changes from a compressed state to a relaxed state, the left side of the pressure plate 17 is lifted, the right end of the pressure plate 17 disengages from the latch below the slider 7, the slider 7 is released from its locked state, the slider 7 is released, the door closer ends its normally open mode, the slider moves to the right, and the door closes automatically, which can also achieve the effect of closing the fire door.

[0035] The above is a detailed description of the preferred embodiments of the present invention. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A new type of sliding rail electric door closer free positioning locking device, comprising a sliding groove mounted on the top of the door frame and a door closer main body mounted on the door leaf, the door closer main body being connected with the sliding groove through a connecting rod and a sliding block, the two ends of the connecting rod being hinged; the inside of the door closer shell frame comprises a locking plate, a telescopic electromagnet, a manual dial, a lock tongue, a pressing plate spring, a pressing plate, a sliding block, and a main body support frame; the main body support frame can slide on the sliding groove, a cross screw passes through the locking plate and is fixed on the upper surface of the left side of the main body support frame, the locking plate and the upper surface of the main body support frame sandwich the track protruding part of the shell frame in the middle; the telescopic electromagnet controls the extension and retraction of the lock tongue, the spring retracts when powered on, and moves to the left to complete unlocking; the manual dial is connected with the lock tongue; the lower pressing electromagnet controls the downward extension of the lower pressing guide rod, the lower pressing guide rod contacts the upper surface of the left side of the pressing plate, the right side cylindrical clamping column of the pressing plate is connected with the right side sliding block clamping groove to form the travel limit of the sliding block, and the left side of the pressing plate is pressed into the lower surface of the lock tongue by the lower pressing guide rod.

2. The free positioning locking device of the new type of sliding rail electric door closer according to claim 1, characterized in that, The sliding block is hinged with the connecting rod, the sliding block moves in the sliding rail, and the travel limit of the pressing plate during locking is performed; the telescopic electromagnet is powered on, the telescopic guide rod retracts, the left side of the pressing plate is upwardly reset by the pressing plate spring below the pressing plate, the right side of the pressing plate descends, the pressing plate clamping column and the sliding groove of the sliding block are separated, the sliding block is unlocked, and the fire door is closed.

3. The free positioning locking device of the new type of slide rail electric door closer according to claim 1, characterized in that, The main body support frame slides in the shell frame, the two side edges below the main body support frame are processed with guide protrusions, and the two side protrusions cooperate with the guide grooves below the shell frame.

4. The free positioning locking device of the new type of slide rail electric door closer according to claim 2, characterized in that, Four cross screws are arranged on the locking plate, the cross screws pass through the locking plate and are fixed on the upper surface of the main body support frame, the locking plate and the upper surface of the main body support frame sandwich the track protruding part of the shell frame in the middle, and the two side protruding parts of the upper surface of the main body support frame cooperate with the upper side sliding groove of the shell frame.

5. The free positioning locking device of the new type of slide rail electric door closer according to claim 3, characterized in that, The telescopic electromagnet structure cooperates with the pressing plate to form locking and unlocking through the telescopic guide rod, the spring on the telescopic guide rod, and the pressing plate spring and the pressing plate.

6. The free positioning locking device of the new type of slide rail electric door closer according to claim 4, characterized in that, The manual dial fixed on the lock tongue on the telescopic guide rod is manually moved to the left to move the lock tongue in the locked state, the pressing plate rebounds, the sliding block is released, and the door is closed.

7. The free positioning locking device of the new type of slide rail electric door closer according to claim 5, characterized in that, The lower pressing electromagnet is powered on to make the lower pressing guide rod extend outward and press the left side of the pressing plate, so that the pressing plate is pressed below the lock tongue along the inclined surface of the lock tongue, then the lower pressing electromagnet is powered off, the lower pressing guide rod retracts, and after the pressing plate is pressed below the lock tongue, the sliding block slides to the left, and the sliding block clamping groove cooperates with the right side pressing plate clamping column.

8. The free positioning locking device of the new type of slide rail electric door closer according to claim 6, characterized in that, The left side of the pressing plate cooperates with the lock tongue, the lower pressing guide rod, and the pressing plate spring; the pressing plate spring is fixed on the main body support frame below and on the lower side of the pressing plate above, the lock tongue retracts, the pressing plate spring releases, and the pressing plate is reset.

9. The free positioning locking device of the new type of slide rail electric door closer according to claim 7, characterized in that, The pressing plate and the pressing plate frame are connected through a rotating pin, the pressing plate frame is fixed on the main body support frame through six buffer bolts, buffer springs are arranged on the buffer bolts, the upper side of the buffer spring contacts the lower surface of the pressing plate frame, the lower side of the buffer spring contacts the upper surface of the pressing plate frame, the left lower end surface of the pressing plate is connected with the pressing plate spring, and the pressing plate spring is installed on the groove table of the main body support frame.

Images