Chain tubular motor resistance protection mechanism

Abstract

The invention relates to an obstruction protection mechanism for a chain tubular motor installed on an electric rolling shutter door. The invention is mainly designed to solve the problem that the existing chain tubular motor cannot stop in time when the rolling shutter encounters an obstruction. The invention comprises a fixing seat, a hole is provided in the middle of the fixing seat, and two arc-shaped driving blocks are provided on the right end face of the fixing seat; two arc-shaped driving grooves are provided on the inner wall of the annular rotating sleeve, and the annular rotating sleeve also has a switch block installation groove, the switch block is installed in the switch block installation groove, one end of the switch block is exposed from the annular rotating sleeve, and the arc-shaped driving block is placed in the arc-shaped driving groove; the space of the arc-shaped driving groove is larger than the space of the arc-shaped driving block, and the column is connected to the fixing seat by bolts after passing through the annular rotating sleeve, and the micro switch is connected to the column by screws. The annular rotating sleeve is connected to the outer tube of the tubular motor by screws. The advantage is that when the rolling shutter encounters an obstruction, the motor can be stopped or rotated in the reverse direction to eliminate the danger.

Description

Technical field:

[0001] The utility model relates to an obstruction protection mechanism for a chain tubular motor installed on an electric rolling shutter door. Background technology:

[0002] Tubular motors are mostly used in electric rolling doors. The motor is hidden in the rolling tube. The rotation of the motor drives the transmission shaft to rotate, thereby realizing the lifting and lowering of the rolling shutter curtain. When rising, the curtain is wound on the reel, and when descending, the curtain slides down along the inner side of the guide rail.

[0003] The existing chain-type tubular motor cannot stop in time when the rolling curtain encounters an obstacle, such as when it hits a person, etc. in an emergency, thereby causing harm to the person or causing other losses. Summary of the invention:

[0004] The technical problem to be solved by the utility model is to provide an obstruction protection mechanism for a chain tubular motor which can stop or work in reverse when a rolling curtain encounters an obstacle while moving upward or downward, thereby playing a protective role.

[0005] The purpose of the utility model is achieved as follows: the obstruction protection mechanism comprises a fixing seat, which is connected to the left zipper stroke component at the left end of the tubular motor by bolts, and a hole is provided in the middle of the fixing seat for the hexagonal rod of the left zipper stroke component to pass through, and two corresponding arc-shaped driving blocks extending to the right are fixed on the right end surface of the fixing seat; two arc-shaped driving grooves correspondingly matched with the arc-shaped driving blocks are provided on the inner wall of the annular rotating sleeve, and a switch shift block installation groove is also provided on the right end surface of the annular rotating sleeve, and the switch shift block is installed in the switch shift block installation groove by bolts, and one end of the switch shift block is exposed from the annular rotating sleeve, and the annular rotating sleeve is located on the right side of the fixing seat and the two arc-shaped driving blocks on the fixing seat are respectively placed in the two arc-shaped driving grooves of the annular rotating sleeve;

[0006] The space (angle) of the arc-shaped driving groove is larger than the space (angle) of the arc-shaped driving block, so that the arc-shaped driving block can achieve a certain range of rotation in the arc-shaped driving groove.

[0007] It also includes a column, which passes through the annular rotating sleeve from the left end and is connected to the fixing seat through bolts. A micro switch is connected to the column through screws, and the switch block corresponds to the position of the micro switch.

[0008] Another micro switch is added near the micro switch, and the added micro switch is also connected to the column by screws. When there are two micro switches, the switch block is located between the two micro switches. The purpose of setting two micro switches is that one is responsible for the forward rotation encountering resistance, and the other is responsible for the reverse rotation encountering resistance.

[0009] The column is a hollow structure, and the hexagonal rod of the left component of the zipper travel passes through the middle of the column.

[0010] The right component of the zipper stroke is fixed to the column, and the annular rotating sleeve is connected to the outer tube of the tubular motor through screws.

[0011] The utility model has the advantages that when the rolling curtain encounters obstacles when going up or down, the rotating sleeve will rotate to a certain extent, so that the switch block touches the micro switch to stop the motor or rotate in the reverse direction, thereby eliminating the danger. Description of the drawings:

[0012] Figure 1 It is an exploded structural diagram of the utility model;

[0013] Figure 2 It is a structural schematic diagram of the fixing seat in the utility model;

[0014] Figure 3 It is a structural schematic diagram of the annular rotating sleeve in the utility model;

[0015] Figure 4 It is a structural schematic diagram of the center column of the utility model;

[0016] Figure 5 It is an exploded view of the positional relationship between the utility model and the left component of the zipper stroke and the right component of the zipper stroke;

[0017] Figure 6 It is a schematic diagram of the connection state of the utility model and the tubular motor. Specific implementation method:

[0018] Combine the following Figure 1-6 Further explain the utility model;

[0019] It comprises a fixing seat 1, which is connected to the zipper stroke left component 9 at the left end of the tubular motor by bolts, a hole 1-1 is provided in the middle of the fixing seat for the hexagonal rod of the zipper stroke left component to pass through, and two corresponding arc-shaped driving blocks 1-2 extending to the right are fixed on the right end face of the fixing seat; two arc-shaped driving grooves 2-1 correspondingly matched with the arc-shaped driving blocks are provided on the inner wall of the annular rotating sleeve 2, and a switch block installation groove 2-2 is also provided on the right end face of the annular rotating sleeve, and the switch block 3 is installed in the switch block installation groove by bolts, and one end of the switch block is exposed from the annular rotating sleeve, the annular rotating sleeve is located on the right side of the fixing seat, and the two arc-shaped driving blocks on the fixing seat are respectively placed in the two arc-shaped driving grooves of the annular rotating sleeve;

[0020] The space (angle) of the arc-shaped driving groove is larger than the space (angle) of the arc-shaped driving block, so that the arc-shaped driving block can achieve a certain range of rotation in the arc-shaped driving groove.

[0021] It also includes a column 4, which passes through the annular rotating sleeve from the left end and is connected to the fixed seat through a bolt 5, one or two micro switches 6 are respectively connected to the column through screws 7, the column is a hollow structure, and the hexagonal rod of the left component of the zipper stroke passes through the middle of the column;

[0022] The switch block corresponds to the position of the micro switch. When there are two micro switches, the switch block is located between the two micro switches.

[0023] The right zipper travel component 10 is fixed to the column. The annular rotating sleeve 2, the column 4 and the micro switch 6 of the mechanism are all located in the outer tube 8 of the tubular motor and the annular rotating sleeve is connected to the outer tube 8 of the tubular motor by screws.

[0024] When the tubular motor is working normally, the switch block presses a micro switch when the zipper stroke assembly is under force. When encountering an obstruction, the outer tube will flip and drive the annular rotating sleeve to rotate, causing the switch block to knock down another micro switch and send a signal to the controller. After receiving the signal, the controller will give the motor an instruction to stop working or work in the reverse direction, which plays a safety role.

[0025] The wire on the micro switch needs to lead out of the stroke component to give the controller a signal.

[0026] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An obstacle protection mechanism for a chain tubular motor, comprising a fixing seat (1), the fixing seat being connected to a zipper stroke left component (9) at the left end of the tubular motor by bolts, wherein: The middle part of the fixed seat is provided with a hole (1-1) for the hexagonal rod of the left component of the zipper stroke to pass through, and the right end surface of the fixed seat is fixed with two corresponding arc-shaped driving blocks (1-2) extending to the right side; the inner wall of the annular rotating sleeve (2) is provided with two corresponding arc-shaped driving grooves (2-1) matching with the arc-shaped driving blocks, and the right end surface of the annular rotating sleeve is also provided with a switch block installation groove (2-2), the switch block (3) is installed in the switch block installation groove by means of bolts, and one end of the switch block is exposed from the annular rotating sleeve, the annular rotating sleeve is located on the right side of the fixed seat, and the two arc-shaped driving blocks on the fixed seat are respectively placed in the two arc-shaped driving grooves of the annular rotating sleeve; The space of the arc-shaped driving groove is larger than the space of the arc-shaped driving block; It also includes a column (4), which passes through the annular rotating sleeve from the left end and is connected to the fixing seat through a bolt (5), a micro switch (6) is connected to the column through a screw (7), and the switch block corresponds to the position of the micro switch.

2. The obstruction protection mechanism for the chain tubular motor according to claim 1, characterized in that: A micro switch is added near the micro switch, and the added micro switch is also connected to the column through screws, and the switch block is located between the two micro switches.

3. The obstruction protection mechanism for the chain tubular motor according to claim 1 or 2, characterized in that: The annular rotating sleeve is connected to the outer tube (8) of the tubular motor by means of screws.

4. The obstruction protection mechanism for the chain tubular motor according to claim 1 or 2, characterized in that: The column is a hollow structure, and the hexagonal rod of the left component of the zipper stroke passes through the middle of the column.

Images