ES2267351B1 - MOTOREDUCTOR FOR METAL CARPENTRY DOORS. - Google Patents

Abstract

Motor reducer for metal carpentry doors. The present invention relates to a motor reducer for metal carpentry doors constituted as a compact block that can be installed vertically and hidden inside the structure comprising the hinged area of the door. The reduction stage is in turn composed of several stages of an epicycloidal train. It includes at the exit an opening limiter and a manual locking means of the opening integrated in the same block in such a way that only the tightening adjustment knob of the manual fixation protrudes outside. The invention comprises a geared motor that offers continuous behavior without heating due to its high mechanical performance and is very discreet due to its degree of compaction.

Description

Gearmotor for carpentry doors metallic

Object of the invention

The present invention relates to a gearmotor for metal carpentry doors constituted as a compact block that can be installed vertically and hidden inside of the structure comprising the hinged area of the door.

This invention characterizes the use of various internal reduction stages using planetariums.

Includes an opening limiter at the exit together with opening locking means integrated in a same block so that only the exterior protrudes tightening control after adjusting the opening angle to be fixed.

The invention comprises a gearmotor that offers continuous behavior without heating due to its high mechanical performance and that is very discreet for its degree of compaction

Background of the invention

There are various configurations of gearmotors with various purposes such as gearmotor described in the Spanish Patent with number of publication ES2042355.

This gearmotor consists of a motor, a reduction stage, both arranged outside and not hidden, which they act on a set of belts connected to each other and guided to allow the opening of doors for industrial use.

The door is formed by two leaves, where each  sheet includes a double curtain whose ends are rolled in corresponding vertical axes to achieve the opening.

This opening is achieved with a folding in its vertical vertical line

With more general use, the use of gearmotors of industrial application in which the motor It is protected by its own housing or sometimes with a set of sheets that isolate it from the rest of the elements, mainly not to make their moving parts accessible. These plates must not prevent adequate motor ventilation, Main source of heat.

The present invention consists of a geared motor specially designed to stay in a space as narrow as is the frame structure of a door of metal carpentry This gearmotor meets requirements so demanding as they are: occupying such a small space, being protected from the weather, use reduced voltages, dissipate low heat since easy evacuation in a space is not possible reduced, and have an opening limiter.

Description of the invention

The present invention consists of a motor reducer for consistent metal carpentry doors basically in four stages, the motor, the reducer, some means of fixing and an opening limiter.

These four stages are arranged consecutive, with the main vertical axis coinciding with the axis of turning the door in such a way that the torque is applied in the hinged side of the door to propel the opening or closing Of the same.

The engine is an engine preferably of direct current since it works at low voltages, for example 12V or 24V, and allows a change in the direction of application of the pair without more than reverse polarity.

Low voltage is also a means of safety  against electrocutions since usually, this type of metal carpentry doors are installed to the weathering and exposed to inclement weather such as The rain.

The motor output shaft is applied to a body  reducer consisting of a plurality of reduction stages based on epicycloidal trains that give very high performance and They allow installation in a very small space.

This reducing body consists of a cylinder, with stiffening ribs and threaded traction studs for the tightening of the covers, which is indented internally forming the crown common to all stages of reduction.

Each of the covers includes the bearings and the boards independenting the stage of reduction of the rest of the elements.

The output of the reducer is formed by an axis with fixing means to act on a limiter of opening.

The drive of the door with respect to the frame or fixed structure is carried out through the block that serves, among other functions, to fix the door at a certain angle. This consists mainly of two pieces, one in the form of a solidarity block with the fixed structure of the door and through which it is driven by reaction and another integral with the output shaft of the gearbox.
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Both pieces are in solidarity through teeth arranged circumferentially and with faces oblique.

By means of a screw it is possible to tighten manually the toothed piece against the block getting fix the Door position at a predetermined angle.

The presence of a helical spring tends to keep the two pieces separated from each other.

The solidarity block to the fixed structure of the door is part of the adjustable opening limiter and it also has an accommodation, open below, to accommodate an electrical circuit consisting mainly of two switches between which a flexible rod is located.

This flexible limiter stands out for the lower opening of its housing such that during motorized opening can reach protrusions introduced in perforated from a lower disc integral with the engine chassis and which therefore turns with the door.

The projections can be changed drilling to adjust the maximum opening angle in each case. One time reached this angle, the flexible rod collides with the shoulder and Turn off the engine.

The set of the four stages are housed in a  tubular body constituting the fixed structure on the side hinged door being hidden and with its moving parts protected.

Only the screw protrudes externally of tightening that determines the maximum torque to apply on the door.

Description of the drawings

This descriptive report is complemented, with a set of drawings, illustrative of the preferred example and never Limitations of the invention.

Figure 1 shows an exploded exploded view of the reducer housing.

Figure 2 shows a perspective of the parts involved in each of the stages of the reducer.

Figure 3 shows coupled the motor, the reducer, the base of the outer shell fastening to the frame of the door and opening limiter plate.

Figure 4 shows an exploded view of the means of  manual locking of the opening that are placed on the plate of the opening limiter

Figure 5 shows a view of the door of Metal carpentry with the engine already installed.

Example of embodiment of the invention

The present invention consists of a gearmotor for metal carpentry doors consisting of four stages, a motor, a reducer, an opening limiter and a par, all arranged in this order.

The gearmotor is designed to be installed in a housing of limited dimensions by the tube where is installed and that constitutes the hinged side of the door of metalwork so it is a small space and with Little or no ventilation.

These two technical requirements impose important restrictions in the gearmotor space and in the efficiency since the energy dissipated must be minimal to avoid excessive heating

This type of doors (17) are installed preferably outdoors so they must be protected of inclement weather, and in case of an accident of electrical communication, for example by the water inlet of rain, electrocution should be avoided as much as possible of who is in contact with the door.

With that purpose, in this realization of the invention has been made use of a direct current motor (9) of low voltage which also allows adequate control of the direction of the march without more than reversing the polarity in the feeding of the engine (9). The polarity and power control can be  carry out in an electrical panel located near the door.

The motor shaft output (9) in turn enters in a multi-stage epicycloidal reducer. In this embodiment preferential use has been made of three stages, each of them constituted by a set of pieces that are repeated and that they are packed one after the other until completing the entire reduction train. The number of stages will depend on the output speed and the required torque also at the output.

Figure 1 shows the gearbox housing in exploded perspective where a central body (2) is shown mainly tubular, ribbed (2.1) and with perforations (2.2) that they cross such ribs (2.1).

The perforations (2.2) of the ribs admit the passage of a threaded stud (not shown in the figures) which in turn goes through perforations (1.2, 3.2) of ribs (1.1, 3.1) also present in the caps (1, 3) of one and another extreme.

At these ends is where the nuts are located  that get the tightening that presses the covers (1, 3) together with the central body (2) in the middle, leaving inside caught the different stages that constitute the reduction.

The covers (1, 3) have perforations central (1.3, 3.3) with the necessary seats for both bearings as for the joints in the passage of the shafts.

The central body (2) has the surface internal toothed (2.3) with the teeth extending along full length to serve all stages of reduction of the epicycloidal train.

Figure 2 shows three views of the same disk-shaped piece (4) that constitutes one of the stages of the epicyclic train:

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the one on the left shows in one of its faces a central attack pinion (4.1),

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the central view shows the other face with three breasts (4.2) equidistant from each other,

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and the one on the right in it position that the central where the satellites have been incorporated (5) in the lugs (4.2) constituted as axes.

This same figure 2 shows how the satellites (5) leave a hole in the central geometric axis that it allows to engage either the attack pinion (6) of the motor (9), or well the central attack pinion (4.1) of the previous stage according to whether the stage is the first and adjacent to the engine (9) or is it a stage later.

It is also possible to check how the satellites (5) have their teeth projected beyond the perimeter of the disk (4) where they are inserted.

In this way it is possible that they engage in the  crown consisting of the internal teeth (2.3) of the body central housing thus completing the train epicycloidal

The output shaft (7) of the reduction stage it will have its end constituted as an additional attack pinion and It will be the one that reaches the opening limiter.

Figure 3 shows the motor assembly (9), the housing formed by the central body (2) and its covers (1, 3) of the reduction stage, and the output shaft (7) of the latter which reaches a second axis (8) which in turn crosses the limiter of Opening plus manual locking means, both more detailed ahead.

After the lower end of the second axis (8), represents a piece (10) that serves as an anchor and fixation to the outer shell (16) shown in figure 5. This shell (16) outer is the tubular structure of the hinged side of the door of metalwork and that houses the entire lower assembly (motor and reducer). Therefore the whole motor-reducer rotates with the door. This support is the one that transmits the torque to the fixed reference, so that the reaction to this torque on the fixed structure is transmitted to the door (17) for opening or closing.

The piece (10) that serves as an anchor to the housing exterior (16) establishes the housing of the whole motor-reducer The shaft (8), when it surpasses the piece (10) anchoring the outer shell (16) crosses the limiter opening (11) and finally reach block (12) with the means Manual lock.

The opening limiter (11) consists of mainly in a multiple perforated flat disc (11.1) near its periphery. These perforations (11.1) can accommodate a Highlight (for example a screw) that serves as a stop as it is will describe later.

Above this limiter are the blocking means consisting mainly of a block (12) with two holes, a hole (12.1) rectangular and without base bottom and a second hole (12.2) of circular plan.

The hollow (12.1) of rectangular plan houses a electronic board (12.3) with two switches (12.3.1), one at each side of a flexible stem (12.3.2). Flexion on both sides of the stem (12.3.2) activates any of these switches (12.3.1).

The flexible stem (12.3.2) is the one that stops  in the projections inserted in any of the perforations (11.1) of the opening limiter disc (11). Adjusting the position of Projections by choice of drilling (11.1) suitable are determines the activation of both switches (12.3.2) according to the turning sense.

Thus, with two highlights, the  limits in both directions of rotation in the door opening (17).

The second hole (12.2), circular, presents at its base a set of teeth (12.2.1) of faces oblique and in the center the perforation that allows the shaft (8) that comes from the opening limiter (11) emerge.

On the teeth (12.2.1) of the hole (12.2) incorporates a cylindrical piece (14) with matching teeth (14.1) which incorporates a spring (15).

The cylindrical piece with teeth (14.1) presses against the teeth (12.2.1) of the block (12) by screw action (13) while the spring (15) tends at all times to distance them.

The block (12) is fixed since it is integral to the frame or fixed structure of the door. Therefore, the gearmotor turn with the door as a reaction when exerting the torque against the block (12) fixed.

The screw (13) emerges superiorly above  of the block (12) as shown in figure (5) for at any time tighten the locking gear (14) manual leaving the door fixed at a certain angle.

In this last figure it is possible to check the hidden position of the gearmotor, in the tubular structure (16) of the mobile door frame leaving only the top screw (13) manual adjustment. Although not shown in the figure (5), under the gearmotor, at the lower end of the side door hinge (17) there is an axial retaining bearing which supports the weight of the door and reaction efforts derived from the application of the torque by the gearmotor.

They do not alter the essentiality of this invention variations in materials, shape, size and arrangement of component elements, described in a non-limiting manner, sufficient this one to proceed to its reproduction by an expert.

Claims (6)

1. Motor reducer for metal carpentry doors, characterized by being constituted by four consecutive stages arranged along a vertical axis, motor (9), reducer, opening limiter and manual locking means in the opening, housed in a tubular structure (16) on the hinged and integral side with the door (17), with shaft output superiorly to a block (12) integral with the fixed structure or frame of the door for its impulsion by reaction with it; where the reduction stage in turn is constituted by a plurality of stages constituted by epicycloidal trains in which the tubular body (2) in which they are housed acts as a crown; The opening limiter (11) is formed by a multiple perforated disc (11.1) to determine two positions by means of elements inserted in such perforations (11.1), to constitute stops on a flexible rod (12.3.2) acting on two switches (12.3 .one); and, the output shaft (8) of the opening limiter (11) reaches the block (12) with the opening blocking means constituted by the fixed block (12) having a circular teeth (12.2.1) of teeth of oblique faces coinciding with the teeth of a piece (14) integral with the shaft, both parts being pressed by means of a screw (13) and distanced by a helical spring (15), so that by tightening the manual immobilization of the door. 2. Motor reducer for metal carpentry doors according to claim 1, characterized in that each of the stages of the epicyclic train of the reduction train is constituted by a disc (4) that has on one side and centered a pinion (4.1) of attack with the next stage and on the other side three equidistant lugs (4.2) that serve as an axis to the three planetariums (5) that engage with the outer crown (2.3) constituted by the central body (2) of the housing. 3. Motor reducer for metal carpentry doors according to claim 1, characterized in that the stem (12.3.2) and the switches (12.3.1) of the opening limiter (11) are installed in a plate (12.3) which in turn is housed in a recess (12.1) of the fixed block (12). 4. Motor reducer for metal carpentry doors according to claim 1, characterized in that the screw (13) for tightening the manual opening locking means emerges superiorly on the hinged side of the door (17). 5. Motor reducer for metal carpentry doors according to claim 1, characterized in that the drive motor (9) is direct current. 6. Motor reducer for metal carpentry doors according to claim 5, characterized in that the direction of rotation of the motor (9) is established by changing the polarity of the supply.