JPS6328372Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to an intermediate opening setting device for setting a damper to an intermediate opening in a motor damper.

[Conventional technology]

Conventionally, air volume adjustment using two-position control of air conditioning requires
The following three measures are being implemented, but the damper intermediate opening setting is (1) MD + VD, that is, MD (motor damper).
In the strategy of using a VD (manual damper) in combination, the MD allows the damper to take only two positions, fully closed and fully open, and when the MD is fully open, only the damper on the VD side opens the damper intermediately. Set the temperature and adjust the overall air volume.

(2) MD linkage adjustment is performed by changing the connecting rod attachment section and ball joint position whenever necessary; (3) remote setting is performed using a proportional motor. This is done using a remote setting device.

Now, Figures 6 to 8 show the damper linkage that adjusts the MD linkage mentioned in item (2) above, that is, the link mechanism that conveys the control operation of the module troll motor (two-position operating motor for ON/OFF). This will be explained based on the diagram.

As shown in FIG. 6, a crank arm 1c fixed to the rotating shaft 1s of a module troll motor (hereinafter referred to as "motor") 1 installed at the end of the upper surface Du of the duct D, and a side wall Ds of the duct D A damper arm 2d fixed to a damper shaft 2s protruding from the center of the outer surface is connected by a connecting rod 4 via ball joints 3c and 3d fixed to each, and the crank arm 1c and the damper arm 2d
When attached, both are rotated on the same vertical plane. Note that when the rotation angle β' of the damper 2 (the rotation angle of the damper arm 2d) is the total rotation angle β (90 degrees), the damper arm 2
d is installed in the duct D with an angle difference γ of 45 degrees with respect to the damper 2 fixed to the damper shaft 2s.

As shown in FIG. 7, the adjustment of the linkage is such that the total rotation angle α of the motor 1 is 160 degrees, and when the crank arm 1c is at the center of the angle α, the position of the damper arm 2d is The crank arm 1c should be parallel to the center line of the elongated hole 1a (see Fig. 8) and be in the center of the maximum desired damper opening degree β, and the ball joint 3c (no. (see figure 8) is
In a state where the above three conditions of being attached to the innermost part of the long hole 1a are satisfied, the ball joint 3d on the damper 2 side is connected to the damper arm 2d.
Attach it to the desired location on the 2m opening scale (see Figure 8). For example, when the damper arm 2d is installed at a 60 degree scale, when the motor 1 operates at a full rotation angle α, the rotation angle β' of the damper arm 2d becomes 60 degrees. That is, the opening degree of the damper 2 is 60 degrees. However, in this case, the damper arm 2d is reassembled to the damper shaft 2s in advance so that the angular difference γ is 60 degrees, and the length of the connecting rod 4 is also adjusted.

In addition, as shown in Fig. 9, the MD + VD strategy is to attach a duct D' following the duct D of the MD equipment, and connect the damper shaft 2's of the damper 2' protruding from the center of the side wall D's. Handle H via worm gear W
The opening degree of the damper 2' is adjusted by manual operation. Needless to say, at this time, damper 2 of the MD should be set to the fully open state.

[Problem that the invention attempts to solve]

However, in the case of MD + VD, installing a manual damper 2' is not only expensive, but also requires space because the damper is doubled, resulting in a wasteful configuration. It is complicated to stop the air blower and adjust the length of the connecting rod, that is, the installation section of both joints 3c and 3d, and as mentioned above, the adjustment operation is complicated and cannot be easily done by general users. In addition, remote adjustment requires a remote controller and the motor must be proportional, which increases cost.

[Means and actions for solving problems]

This idea was made by focusing on the above-mentioned problem.In MD, an arm box equipped with a feed screw device is attached to the damper arm at a desired angle, and a ball is attached to the ball nut of the feed screw device. By providing an intermediate opening setting device that adjusts the damper opening by moving the damper opening setting device integrally connected to the joint along the screw shaft by rotating the handle and setting it at a predetermined position. , which solved these problems.

[Embodiment] Hereinafter, a first embodiment of this invention will be described based on FIGS. 1 to 4. Note that the same members and the like as in the conventional example are designated by the same reference numerals, and their explanations will be omitted.

First, I will explain the configuration.

The intermediate opening setting device 11 is, as shown in FIG.
The main components include an arm box 12, a feed screw device 13, a damper opening setting tool 14, and a fixture 15.

The arm box 12 is formed by screwing and integrating a cover case 12k, which has an arcuate long guide hole 12a with one end open, into the upper part of a slender box-shaped casing 12c. In the feed screw device 13, both end walls 12t of the casing 12c,
A screw shaft 13n having a ball screw groove provided through the screw shaft 12t' has a stopper 13s inserted into the base of the screw shaft 13n and secured with a screw, which contacts the end wall 12t and is screwed into the tip. double nut 1
3d, it is held in pressure contact with the end wall 12t' via a spring washer 13z, and does not move in the axial direction, but is rotatable. The spring washer 13z is intended to prevent free rotation of the screw shaft 13n due to vibrations, etc., and eliminate looseness. However, the washer 1
Instead of 3z, a tightening nut with a bar may be provided.

A handle 13h for adjusting the damper opening is attached to the base end of the screw shaft 13n.

As shown in FIG. 2, the damper opening setting tool 14 connects a ready-made ball joint 3 to the screw shaft 13.
It is screwed and fixed to a nut 14n welded to a ball nut 13b mating with n.

The fixture 15 consists of a rectangular base 15k obliquely welded to the lower surface of the casing 12c at a desired angle δ, and a similarly rectangular clamping plate 15s. The lower surface of the base 15k has a longitudinal protuberance 15r that fits into the long hole 2a of the damper arm 2d.
(see Fig. 3), the damper arm 2d is held between the base 15k and the clamping plate 15s, and the two clamping bolts 15b are attached to the base 15k.
By penetrating through and screwing into the clamping plate 15s, the intermediate opening setting device 11 and the damper arm 2d are integrally connected.

Next, the detailed configuration of each member of the intermediate opening setting device 11 will be described with reference to FIG.

In the damper linkage of the motor damper, if the center points of the rotation axis 1s and the damper axis 2s of the motor 1 are m and d, respectively, perpendicular lines mh and dh' erected in the same direction with respect to the line segment md are It is located at the center of the rotation angle of 160 degrees and the fully open angle of the damper 2 of 90 degrees, and the ball joint 3c of the crank arm 1c is at a position 80 degrees left and right of the perpendicular mh, at point a,
The ball joint 3d of the damper arm 2d is at a position 45 degrees left and right of the perpendicular line dh', points e and f.
Rotate between. In addition, the connecting sections ae and bf of the connecting rod 4
are equal and their length is L. Note that the angular difference γ of the damper arm 2d with respect to the damper 2 is set to 45 degrees.

First, the damper 2 where the ball joint 3c is at point b, that is, the ball joint 3d is at point f.
The intermediate opening setting device 11 attached to the damper 2 at the zero opening position where the damper is fully closed will be described.

Point f is on the opening scale 2m when the damper arm 2d is on the line df, which is the position corresponding to the fully closed dumper.
It matches the 90 degree ball joint 3d.

When the ball joint 3c rotates and reaches point a, the initial movement position of the ball joint 3d, where the damper opening should be 30 degrees, is determined as follows.

Draw a circle with point d as the center and a suitable radius r, and let the point of intersection with line df be p, and the point of intersection with line de be q.

An angle line d30 of 30 degrees is drawn from the line PD with an opening degree of 0 degrees, and the intersection point with the arc pq is set to 30.

Draw a circle centered on point b, having a radius of length L and passing through point f, and let f' be the point of intersection with arc pq.

Let the length of the line segment pf' be l, and the intersection point with the arc pq of a circle drawn with radius l centered at point 30 is 30
Set to 1.

Arc that is the locus of rotation of ball joint 3d
Let 302 be the intersection of fe and the angle line d30.

Let 303 be the intersection of circles drawn with radius L and centering on points 301 and 302, respectively.

Let 304 be the intersection of a circle drawn with point 303 as the center and radius L and a circle drawn with point a as the center and radius L.

If 305 is the intersection of a circle whose center is point d and whose radius is line segment d304 and the arc ff' drawn about point b, then point 305 is the desired initial movement position of ball joint 3d. It is. In this case, the mounting angle δ is approximately 70 degrees;
teeth. The numerical value can be obtained by the above-mentioned drawing, and it is not limited to a certain angle because it depends on dimensions such as the line segment md and the radius of rotation of the ball joint 3c.

According to the same procedure as above, the intermediate opening is 40 degrees,
Initial motion points of 50 degrees, 60 degrees, and 75 degrees 405, 50 respectively
5,605,755 is obtained on the arc ff'.

Next, connect point 305 and point f, line segment f30
Draw a tangent F to the arc ff' parallel to 5, and draw the feed screw device 1 along the bisector N between the tangent F and the line segment f305.
3 screw shafts 13n are provided, and the casing 12
The side wall 12s of c is also made parallel to this bisector N.

The long guide hole 12a cut into the cover case 12k from one end has an arc shape with the arc ff' as the center curve and has a width that allows the damper opening degree setting tool 14 to pass through. Along the hole 12a, a scale 12m of 30 degrees to 90 degrees is provided corresponding to the initial movement position of the ball joint 3d where each intermediate opening degree is obtained.

In addition, at the initial movement position where the center line of the long hole 2a of the damper arm 2d is on the line dp, the angle formed between the line dp and the bisector N is the mounting angle δ between the casing 12c and the base 15k of the fixture 15. be.

That is, the intermediate opening setting device 11 is constructed according to the above-mentioned procedure.

Next, the effect will be described.

First, the intermediate opening setting device 11 is fixed to the damper arm 2d using the fixture 15 by aligning the 90 degree opening scale of the damper arm 2d with the 90 degrees of the scale 12m of the cover case 12k. Next, the ball joint 3c is at point b, and the damper arm 2d is at point dp.
The connecting rod 4 is fixed to the damper opening degree setting tool 14 in a state where it is on the line.

In this state, when the motor 1 is operated to rotate the crank arm 1c to point a, the damper opening setting tool 1
4 rotates from point f to point e, and the damper opening degree becomes 90 degrees. For example, if you want to set the damper opening degree to 60 degrees during air blowing, operate the handle 13h and move the damper opening setting tool 14 to 30 degrees on the scale 12m, and the setting tool 14 will move to the arc e304. Along the line, the damper arm 2d moves from point e to point 304.
The 90 degree scale position reaches point 302 along arc ef.
That is, the damper arm 2d is at an angle line d3 of 30 degrees.
0, the damper 2 is set to an intermediate opening of 30 degrees.

Also, when the damper angle is zero, that is, the ball joint 3c is at point b, and the damper arm 2
When d is on the line dp, the damper opening setting tool 14
If, for example, is set in advance to 60 degrees on a scale of 12 m, when the crank arm 1c is rotated to point a by the operation of the motor 1, the setting tool 14 will move along the arc e3.
04, but the damper arm 2d
remains on line d60, so damper 2
The opening degree is 60 degrees.

In addition, when the damper opening degree setting tool 14 is moved by the screw shaft 13n, the ball nut 13b moves in a straight line, and the attachment part of the connecting rod 4 of the setting tool 14 is centered on the ball joint 3c and has a radius of L. However, due to the characteristics of the ball connection,
Since the ball nut 13b is tilted to compensate for the difference in distance between the straight line and the circular arc, it can be moved without any problems.

Next, as a second embodiment, ball joint 3
As shown in FIG. 5, even for a configuration where c is at point a, that is, the ball joint 3d is at point e, and the damper 2 is at a zero opening position where it is completely closed.
The intermediate opening degree setting device 21 can be made according to the procedure described above, but since the operation is also almost the same, only the drawings will be shown and the explanation thereof will be omitted. However, in this case, the mounting angle δ is approximately 25 degrees.

[Effect of idea]

As explained above, this invention is based on a motor damper in which a feed screw device equipped with a handle is attached to an arm box equipped with a fixture at a desired angle, and a ball joint is attached to a ball nut that is screwed into the screw shaft. The damper can be fixed to the damper arm to set the damper's intermediate opening, so whether the duct is blowing air or not, the damper can be opened at any angle by simply operating the handle. It can be adjusted accurately and quickly, and the device is installed by holding the damper arm and tightening bolts, and there is no need to perform any processing on the existing parts, so it is easy to use even for general users. This has the advantage that adjustment operations and installation can be carried out extremely easily. Furthermore, it has the advantage that it is significantly cheaper to manufacture and its installation is less expensive and time consuming.

[Brief explanation of drawings]

Fig. 1 is a diagram of the first embodiment of this invention, the figure is a side view, the figure is a front view, Fig. 2 is an enlarged cross-sectional view taken along the - line in Fig. 1, and Fig. 3 is a cross-sectional view taken also along the - line. The enlarged view, FIG. 4, and FIG. 5 are explanatory diagrams for determining the configuration of this invention. FIG. 4 is a diagram for the first embodiment, and FIG. 5 is a diagram for the second embodiment. Figure 6 is a perspective view showing the conventional MD damper linkage installed, Figure 7 is an explanatory diagram of linkage adjustment, and Figure 8 is a diagram showing the components of the damper linkage. , the figure is
The figure is a front view of the crank arm, the figure is also a side view, the figure is a front view of the ball joint, the figure is a front view of the crank arm, the figure is also a side view, and Figure 9 shows the conventional MD and VD. It is a perspective view showing the state where it is used and attached together. MD...Motor damper, δ...Mounting angle, 2...
Damper, 2d... Damper arm, 3... Ball joint, 11, 21... Intermediate opening setting device, 12
...Arm box, 12m...Scale, 13...
Feed screw device, 13n...screw shaft, 13b...ball nut, 14...damper opening setting tool, 15...
...Mounting tool, 4...Connecting rod, 12a...Guide elongated hole, 13h...Handle for adjusting damper opening.

Claims (1)

[Scope of utility model registration request] In a motor damper, an arm box is equipped with a feed screw device equipped with a screw shaft having a handle for adjusting the damper opening degree, and has an intermediate opening degree scale of the damper along a guide elongated hole drilled in the longitudinal direction. and a ball nut screwed onto the screw shaft,
Adjust the angle between the damper opening setting tool equipped with a ball joint that fixes the connecting rod, the screw shaft, and the center line of the damper arm to the desired installation angle.
An intermediate opening setting device for a motor damper, characterized in that it comprises a fixture that integrally connects the arm box and damper arm via an intermediary.