CN220101034U - Transmission structure of door opener - Google Patents

Abstract

The utility model discloses a transmission structure of a door opener, which comprises a base and a swing arm, wherein the base is rotationally connected with a rotating shaft, the rotating shaft is used for being connected with an output shaft of an external motor, one end of the swing arm is fixed on the rotating shaft, the transmission structure also comprises a mounting block, the mounting block is connected to the base, a switch piece is arranged at the end part of the mounting block, which faces the swing arm, the switch piece is closer to the swing arm than the corresponding end part of the mounting block, the switch piece is used for controlling the on-off of a power supply loop of the external motor, and when the swing arm collides with the switch piece, the power supply loop of the external motor is broken. Once the swing arm collides with the switch piece, the switch piece can cut off a power supply loop of the motor, and the motor current does not need to exceed a threshold value or not through detection, so that the function of stopping in time is achieved, and the occurrence of the condition that the swing arm collides with the switch piece continuously is reduced.

Description

Transmission structure of door opener

Technical Field

The utility model relates to the field of door openers, in particular to a transmission structure of a door opener.

Background

The door opener is a driver composed of motor, speed-changing mechanism and clutch. Are commonly used to achieve the motorized opening and closing of various door bodies.

There is a door opener comprising a motor and a transmission member, wherein, referring to figure 1,

the transmission piece comprises a base 1, a swing arm 2 and a collision block 5, wherein the swing arm 2 is rotatably connected to the base 1 through a rotating shaft 21, and the end part of the swing arm 2, which is far away from the rotating shaft 21, is connected to the door body. The collision block 5 is fixed on the base 1 and used for delineating the rotation range of the swing arm 2, and an output shaft of the motor is connected with the rotating shaft 21.

When the door is opened or closed, the motor drives the rotating shaft to rotate, so that the swing arm is driven to swing, and the door body is driven to move. When the swing arm impacts the collision block, the swing arm cannot continue to rotate. And because the swing arm can not rotate, the current of the motor can rise, and once the current rises to a certain value, the motor can be triggered to be protected and stopped, so that the whole door opening or closing action is completed.

However, in actual use, the impact block is often poor in quality, for example, the impact block is a plastic plate made of an inferior technology, so that even if the swing arm contacts the impact block, the impact block cannot be stopped immediately, and the internal components of the door opener are easily damaged.

Disclosure of Invention

In order to reduce the occurrence of damage to internal components of the door opener, the utility model provides a transmission structure of the door opener.

The utility model provides a transmission structure of a door opener, which adopts the following technical scheme:

the utility model provides a transmission structure of door operator, includes base and swing arm, it is connected with the pivot to rotate on the base, the pivot is used for with outside motor output shaft, the one end of swing arm is fixed in the pivot, still includes the installation piece, the installation piece is connected on the base, just be provided with the switch piece on the tip of installation piece orientation swing arm, the switch piece is close to the swing arm more than the corresponding tip of installation piece, the switch piece is used for controlling the break-make of the power supply return circuit of outside motor, and when the swing arm collided the switch piece, the power supply return circuit of outside motor was broken circuit.

Through above-mentioned technical scheme, in case the swing arm collides with the switch spare, the switch spare can cut off the power supply loop of motor, and need not to pass through the detection motor current and surpass the threshold value, plays timely shut down's effect, reduces the swing arm and the condition that the switch spare took place to continuously collide to appear.

Optionally, the switch piece includes mounting box and micro-gap switch, micro-gap switch installs on one side of mounting box, the mounting box passes through the bolt fastening on the installation piece just the side protrusion of mounting box installation micro-gap switch is in the side of installation piece orientation swing arm, and when micro-gap switch was triggered, the power supply circuit disconnection of external motor.

Through the technical scheme, when the swing arm rotates towards the direction of the installation block, the micro switch is contacted with the swing arm and pressed by the swing arm, the motor can be triggered to stop after the micro switch is pressed, and the possibility of collision between the swing arm and the installation box, even between the swing arm and the installation block, is reduced.

Optionally, the mounting box is further provided with a swinging plate, one end of the swinging plate is hinged to the mounting box, the other end of the swinging plate faces one side of the swinging arm, and the micro switch is located on the swinging path of the swinging plate.

Through above-mentioned technical scheme, through setting up the swing piece, can trigger micro-gap switch when the swing arm does not bump micro-gap switch, reduce the swing arm and bump the micro-gap switch and appear bumping, reduce micro-gap switch impaired possibility.

Optionally, the hinged position of the swinging piece and the mounting box is positioned on one side of the side surface of the mounting box, which is far away from the rotating shaft.

Through the technical scheme, the end part of the swing piece, which is far away from the hinged position, faces the swing arm, so that the swing piece contacts the swing arm earlier, the micro switch can be triggered when the swing arm is kept at a sufficient distance from the micro switch, and the possibility that the swing arm collides with the micro switch is further reduced.

Optionally, a torsion spring is connected between the swinging plate and the installation box.

Through above-mentioned technical scheme, when the swing piece receives the exogenic action and takes place to rotate, the torsional spring absorbs partial effort and stores as elasticity, and when the swing piece lost exogenic action, the torsional spring was restoreed the swing piece to initial position through elasticity, and when the swing piece was in initial position, the swing arm must can contact the swing piece at the rotation in-process to the swing arm triggers micro-gap switch in advance through the swing piece.

Optionally, one side of the base facing the swing arm is a mounting surface, a plurality of mounting holes are formed in the mounting surface, the mounting holes are circumferentially distributed on the base around the rotating shaft, through grooves corresponding to the mounting holes are formed in the mounting blocks, and the mounting blocks are fixed on the base through the cooperation of bolts and the mounting holes.

Through above-mentioned technical scheme, installation piece detachably connects on the base, when the installation piece damages or when needing to adjust the swing scope of swing arm, can realize through changing the installation piece.

Optionally, a plurality of anti-skidding sand grip is equipped with on the installation face, anti-skidding sand grip sets up on the installation face along the radial direction of pivot, and a plurality of anti-skidding sand grip circumference evenly distributed is on the base.

Through above-mentioned technical scheme, in case the switch damage or swing arm rotational speed are too fast, lead to the swing arm to appear colliding with the installation piece, antiskid sand grip provides sufficient frictional force for the installation piece, reduces the condition emergence of appearing relative movement between installation piece and the base for structural stability is stronger.

Optionally, the through groove is an arc groove, and the center of the through groove is located on the central axis of the rotating shaft.

Through above-mentioned technical scheme, the area of arc wall is bigger, conveniently observes the position of mounting hole through the arc wall, is favorable to accomplishing the connection between installation piece and the base through the bolt fast.

In summary, by arranging the micro switch, the control speed of stopping the motor is increased, the effect of stopping the motor in time is achieved without detecting whether the current of the motor exceeds a threshold value, and the occurrence of the condition that the swing arm and the switch piece collide continuously is reduced; through setting up the swing piece, can trigger the micro-gap switch when the swing arm does not bump the micro-gap switch, reduce the swing arm and bump with the micro-gap switch appearance, reduce the impaired possibility of micro-gap switch.

Drawings

Fig. 1 is a schematic diagram of a structure in the related art.

Fig. 2 is a schematic structural view of the present utility model.

Fig. 3 is a schematic view of the structure of the mounting block in the present utility model.

Fig. 4 is a schematic structural view of the switching element in the present utility model.

Reference numerals illustrate:

1. a base; 11. a mounting hole; 12. an anti-slip raised line; 2. swing arms; 21. a rotating shaft; 3. a mounting block; 31. a through groove; 32. a notch; 33. an anti-skid groove; 4. a switch member; 41. a mounting box; 42. a micro-switch; 43. a swinging plate; 5. and (5) bumping.

Detailed Description

The utility model is described in further detail below with reference to fig. 2 to 4.

Referring to fig. 2, the transmission structure of the door opener comprises a base 1, a swing arm 2 and a mounting block 3, wherein a rotating shaft 21 is rotationally connected to the base 1, the rotating shaft 21 is used for being connected with an output shaft of an external motor, one end of the swing arm 2 is fixed on the rotating shaft 21, and the other end of the swing arm 2 is far away from the rotating shaft 21 along the radial direction of the rotating shaft 21. The mounting block 3 is connected to the base 1, and the mounting block 3 and the swing arm 2 are located on the same side of the base 1. The mounting block 3 is provided with a switch piece 4 towards the end of the swing arm 2, and the switch piece 4 is closer to the swing arm 2 than the corresponding end of the mounting block 3.

The switch piece 4 is used for controlling the on-off of a power supply loop of the external motor, and when the swing arm 2 collides with the switch piece 4, the power supply loop of the external motor is disconnected.

Referring to fig. 2, a surface of the base 1, which contacts with the mounting block 3, is a mounting surface, a plurality of mounting holes 11 are formed in the mounting surface, the mounting holes 11 are threaded holes, and the plurality of mounting holes 11 are circumferentially distributed on the base 1 around the rotating shaft 21. In addition, a plurality of anti-slip raised strips 12 are further arranged on the mounting surface, the anti-slip raised strips 12 are arranged on the mounting surface along the radial direction of the rotating shaft 21, and the plurality of anti-slip raised strips 12 are circumferentially and uniformly distributed on the base 1. The anti-slip convex strip 12 is integrally arranged with the base 1.

Referring to fig. 2 and 3, the overall cross section of the mounting block 3 is fan-shaped, and when the mounting block 3 is mounted on the base 1, the center of the circle toward which the mounting block 3 faces is located on the central axis of the rotating shaft 21. The mounting block 3 is provided with a through groove 31 in a penetrating manner along the thickness direction, the through groove 31 is an arc-shaped groove, and the circle center of the through groove 31 is also positioned on the central axis of the rotating shaft 21.

Referring to fig. 2 and 3, the mounting block 3 is provided with a through groove 31 corresponding to the mounting hole 11, and the mounting block 3 is fixed on the base 1 by the cooperation of a bolt and the mounting hole 11. In order to facilitate the bolt fixing, a step surface is arranged on the inner wall of the through groove 31 on the mounting block 3, so that a nut of the bolt can be abutted on the step surface. In addition, the surface of the mounting block 3 facing the base 1 is provided with an anti-slip groove 33 adapted to the anti-slip convex strip 12.

Referring to fig. 2, there are two mounting blocks 3, and the two mounting blocks 3 are spaced apart on the base 1 such that two spaced apart regions are formed between the two mounting blocks 3. Only one switch piece 4 is arranged on each mounting block 3, and the switch pieces 4 on the two mounting blocks 3 face to the same interval area, and the interval area is the movable area of the swing arm 2. The end of the swing arm 2 away from the rotation shaft 21 passes through the movable area and is limited by two mounting blocks 3, and the swing arm 2 can only rotate in the movable area.

Because the mounting blocks 3 are detachably connected to the base 1, the mounting positions of the mounting blocks 3 on the base 1 can be changed, namely, the mounting holes 11 at different positions are selected to be matched with bolts on the mounting blocks 3, so that the size of a movable area between the two mounting blocks 3 is changed, and the swinging range of the swinging arm 2 is changed, and the swinging arm 2 can be suitable for the opening and closing of different door bodies.

Referring to fig. 2 and 4, the switch 4 includes a mounting case 41 and a micro switch 42. The side of the mounting block 3 facing the movable range is provided with a notch 32 for placing the mounting box 41, and the bottom surface of the notch 32 is provided with a threaded hole for fixing a bolt. The mounting box 41 is secured to the mounting block 3 by means of bolts engaging with threaded holes in the cutouts 32. The micro switch 42 is installed on one side surface of the installation box 41, and the side surface of the installation box 41 where the micro switch 42 is installed protrudes from the side surface of the installation block 3 facing the swing arm 2, when the micro switch 42 is triggered, the power supply circuit of the external motor is broken.

Referring to fig. 2 and 4, a swing piece 43 is further provided on the side of the mounting box 41 on which the micro switch 42 is mounted, one end of the swing piece 43 is hinged on the corresponding side of the mounting box 41, the hinged position of the swing piece 43 and the mounting box 41 is located on one side of the mounting box 41 away from the rotating shaft 21, and the other end of the swing piece 43 extends towards the swing arm 2. The microswitch 42 is in the swing path of the swing tab 43. A torsion spring is connected between the swing piece 43 and the mounting case 41. The end of the swinging piece 43 away from the mounting box 41 faces the rotating shaft 21 side only by the elastic force of the torsion spring.

The external motor is provided with two power supply loops, namely a forward rotation loop and a reverse rotation loop, so as to control the swing arm 2 to rotate in two directions. In order to facilitate continuous operation of the motor, each power supply loop of the motor is provided with a normally open switch controlled manually and a self-locking circuit for self-locking the normally open switch, so that any power supply loop of the motor can continuously operate through self locking after being briefly conducted due to manual operation, and workers are not required to continuously operate, such as continuously pressing a start key.

The two micro switches 42 control the on and off of the two power supply loops respectively. And once the power supply loop is powered off from the on state, the self-locking of the power supply loop is released, so that the motor is stopped. In this embodiment, the micro switch 42 is controlled by connecting a normally closed switch linked with the micro switch 42 in series in the power supply circuit, and when the micro switch 42 is triggered, the linked normally closed switch is opened, so that the corresponding power supply circuit is powered off.

Working principle: because the principle of opening and closing the door by using the above-mentioned transmission mechanism is the same, but the power supply loop of the motor that the staff needs to manually close is different, the rotation direction of the swing arm 2 is different, and the micro switch 42 touched by the swing arm 2 is different, so in this embodiment, the door is opened to describe specifically, and the working principle of closing the door is not repeated.

When a worker needs to open the door, the worker manually closes a normally open switch in a corresponding power supply loop, so that the power supply loop is conducted and self-locking is formed, and the motor is electrified to work so as to drive the swing arm 2 to rotate. The swing arm 2 drives the connected door body to move until the swing arm 2 contacts with the end part of the swing sheet 43 away from the hinging position, the swing arm 2 drives the swing sheet 43 to rotate, the part of the swing sheet 43 close to the hinging position contacts with the micro switch 42 before the swing arm 2 and presses the micro switch 42, so that the normally closed switch linked with the micro switch 42 is disconnected, a corresponding power supply loop is disconnected, the motor is powered off and stopped, the swing arm 2 stops rotating, and the swing arm 2 is prevented from directly colliding with the micro switch 42.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims (8)

1. The utility model provides a transmission structure of door operator, includes base (1) and swing arm (2), it is connected with pivot (21) to rotate on base (1), pivot (21) are used for being connected with outside motor output shaft, the one end of swing arm (2) is fixed on pivot (21), its characterized in that: still include installation piece (3), installation piece (3) are connected on base (1), just be provided with switch piece (4) on the tip of installation piece (3) towards swing arm (2), switch piece (4) are close to swing arm (2) more than the corresponding tip of installation piece (3), switch piece (4) are used for controlling the break-make of the power supply loop of outside motor, and when swing arm (2) collided switch piece (4), the power supply loop of outside motor breaks circuit.

2. The door opener transmission structure according to claim 1, characterized in that: the switch piece (4) comprises a mounting box (41) and a micro switch (42), the micro switch (42) is mounted on one side face of the mounting box (41), the mounting box (41) is fixed on the mounting block (3) through bolts, the side face of the mounting box (41) for mounting the micro switch (42) protrudes out of the side face of the mounting block (3) towards the swing arm (2), and when the micro switch (42) is triggered, a power supply loop of an external motor is broken.

3. A transmission structure of a door opener according to claim 2, characterized in that: the mounting box (41) is further provided with a swing piece (43), one end of the swing piece (43) is hinged to the mounting box (41), the other end of the swing piece (43) faces one side of the swing arm (2), and the micro switch (42) is located on the swing path of the swing piece (43).

4. A door opener transmission structure according to claim 3, characterized in that: the hinge position of the swinging piece (43) and the mounting box (41) is at one side of the corresponding side surface of the mounting box (41) away from the rotating shaft (21).

5. A door opener transmission structure according to claim 3, characterized in that: a torsion spring is connected between the swinging piece (43) and the mounting box (41).

6. The door opener transmission structure according to claim 1, characterized in that: one side of the base (1) facing the swing arm (2) is a mounting surface, a plurality of mounting holes (11) are formed in the mounting surface, the mounting holes (11) are circumferentially distributed on the base (1) around the rotating shaft (21), through grooves (31) corresponding to the mounting holes (11) are formed in the mounting blocks (3), and the mounting blocks (3) are fixed on the base (1) through the matching of bolts and the mounting holes (11).

7. The door opener transmission structure of claim 6, wherein: the mounting surface is provided with a plurality of anti-slip raised strips (12), the anti-slip raised strips (12) are arranged on the mounting surface along the radial direction of the rotating shaft (21), and the anti-slip raised strips (12) are circumferentially and uniformly distributed on the base (1).

8. The door opener transmission structure of claim 6, wherein: the through groove (31) is an arc groove, and the center of the through groove (31) is located on the central axis of the rotating shaft (21).