JP4948498B2 - Switch assembly structure, switch assembly method, and indoor unit of air conditioner - Google Patents

Description

  The present invention relates to a switch assembly structure, a switch assembly method, and an indoor unit of an air conditioner.

The emergency operation switch is provided in a state where a business trip is made to the outside at a predetermined position of the indoor unit. When the remote control breaks down, the user presses this switch with a finger to make the air conditioner operate quickly. I can do it. It can be operated in a predetermined mode by pressing the switch (see, for example, Patent Document 1).
In general, the main reasons for using the emergency switch are as follows.
(1) Trial operation after installation of air conditioner (2) Emergency operation in case of remote control failure When the emergency operation switch is pushed in, the switch element installed on the electronic board in the unit is pushed and the operation of the emergency operation is performed.
If there is a space between the emergency operation switch and the switch element due to design or structural reasons, a switch cap is provided to interpolate the space.
In addition, a plurality of key tops (hereinafter, referred to as “clamping”, “injection molding”, “cooling”, “die opening”, “release of key top sheet with runner”, “key top separation” (cutting with a punching device)) are sequentially performed. A technique for manufacturing a switch cap at a time is known (see, for example, Patent Document 2).

JP 2008-138959 A (page 4, FIGS. 1 to 2) JP 2008-21568 A (page 3, FIGS. 2 to 3)

In the prior art disclosed in Patent Document 1, a number of components as described below are incorporated in an electronic board on which a switch element is arranged.
Switch element, LED, remote control light receiving sensor, connection terminal, integrated circuit, buzzer For this reason, the inside and outside of the board fixing holder needs complicated unevenness to accommodate each electronic component.
On the other hand, as shown in Patent Document 2, the switch cap manufactured integrally by injection molding is independent by cutting the runner portion with a punching device, and thereafter, the independent switch cap is used as a switch element of the substrate fixing holder. Used in the state set in the storage. However, if a burr that is not sufficiently removed occurs in the runner cutting part, when the cap is set in the switch element storage part of the substrate fixing holder, the burr part gets on the uneven part adjacent to the setting position, and the switch is not easily moved due to galling or floating. There was a problem that malfunction occurred.

  The present invention has been made to solve the above-described problems, and eliminates malfunctions after setting the switch cap in the switch element housing portion, and provides a highly reliable switch assembly structure, switch assembly method, and air conditioner. The purpose is to obtain indoor units.

  The switch assembly structure according to the present invention includes a switch cover attached to the design panel, and a lid that is connected to the container and the container via a hinge and has a circular boss at a position corresponding to the switch cover. , Interpolating the space between the switch cover and the switch element, the substrate holder that is attached to the back side of the design panel, the substrate that is housed in the container of the substrate holder, and that mounts the switch element at a position corresponding to the switch cover, And a switch cap provided so that the pressing force from the switch cover is transmitted to the switch element, and when the switch cap is inserted into the boss during assembly, a positioning mechanism for rotating the switch cap to a predetermined position for positioning It is provided on the holder.

  According to the present invention, the emergency operation switch assembly structure includes a switch cover attached to the design panel, a lid part having a tubular boss part connected to the container and the container via the hinge, and corresponding to the switch cover. A substrate holder that is attached to the back side of the design panel, a substrate that is housed in a container of the substrate holder and mounts the switch element at a position corresponding to the switch cover, and a space between the switch cover and the switch element And a switch cap provided so that the pressing force from the switch cover is transmitted to the switch element. When the switch cap is inserted into the boss during assembly, the switch cap is rotated to a predetermined position for positioning. Since the positioning mechanism is provided on the board holder, it is always correct when the switch cap is attached to the board holder. It has the effect that it is possible to reduce the malfunction of the emergency operation switch by can be disposed in a direction-correct depth.

Embodiment 1 FIG.
1 is a front view of an indoor unit of an air conditioner according to Embodiment 1 of the present invention. As shown in FIG. 1, an emergency operation switch 2 formed of a transparent resin, a remote control light receiving window 3, and an LED display section 4 indicating an operation state are attached to a proximity position at a lower right portion of the design panel 1.
2 is an enlarged view of the emergency operation switch unit according to Embodiment 1 of the present invention, and FIG. 3 is a cross-sectional view taken along the line AA of FIG. As shown in FIGS. 2 and 3, the emergency operation switch unit includes an emergency operation switch (which constitutes an emergency operation switch cover) 2 attached to the design panel 1, a remote control light receiving window 3, an LED display unit 4, a switch cap 5, An electronic board 6, a switch element 7 attached to the electronic board 6, and a board holder 8 that stores the switch element 7 are configured. The emergency operation switch 2 is disposed in the vicinity of the back surface of the design panel 1 and has a rod-like shape that is erected from the bottom portion having a larger area than the hole formed in the design panel and the center of the bottom portion toward the surface through the hole in the design panel. The operation unit is configured such that the bottom of the emergency operation switch 2 is attached to the design panel 1 through the switch cap 5 in contact with the switch element 7 attached to the electronic board 6.
FIG. 4 is a perspective view showing a portion in a state where the design panel of the air conditioner according to Embodiment 1 of the present invention is removed. As shown in FIG. 4, the substrate holder 8 that houses the switch cap 5 and the like is provided in the indoor unit body 9.
The role of the switch cap is as follows. The shape of the design panel 1 has a curved surface that is convex toward the front surface. Between the substrate holder 8 that is fixed to the indoor unit body 9 in order to detach the design panel 1 having such a curved shape. A moderate clearance is required. In addition, a gap is generated between the emergency operation switch 2 and the switch element 7 mounted on the electronic board 6. A switch cap 5 is provided to interpolate the gap and reliably transmit the movement of the emergency operation switch 2 to the switch element 7.

5 is an enlarged view of the substrate holder 8 according to Embodiment 1 of the present invention, and FIG. 6 is a view showing a state in which the substrate holder 8 is opened and the electronic substrate 6 is displayed.
As shown in FIG. 6, a number of electronic components such as a buzzer 10, a connection terminal 11, an integrated circuit 12, a remote control light receiving element 13, and an LED element 14 are attached to the electronic substrate 6.
For this reason, the lid portion of the substrate holder 8 needs a complicated uneven shape so as to match the size of these electronic components.
In FIG. 6, the assembly procedure of the substrate holder 8 is performed by fitting the electronic substrate 6 into the substrate holder 8, and then standing up at a position where the switch element 7 on the back surface on the lid side is inserted (FIG. 8). The switch cap 5 is inserted, and the board portion is folded and fitted by the hinge part B so as to cover the lid side of the board holder 8. After completion, it will look like Figure 5. At this time, the tip of the switch cap 5 is configured to be in contact with the bottom of the emergency operation switch 2 as shown in FIG.
FIG. 7 is an enlarged view of the switch cap 5 according to Embodiment 1 of the present invention. As shown in FIG. 7, the switch cap has a circular tube and a disk-like shape having the same center of rotation of the tube at one end (bottom) in the longitudinal direction and extending in the outer peripheral direction. The flange portion D is composed of a connection portion E formed by extending a part of the flange portion D in a strip shape in the outer circumferential direction, and the width of the tip of the connection portion E increases as it proceeds further. A claw portion F provided with a tapered portion so as to be narrowed extends in a direction (upward) perpendicular to the connection portion E. The switch element 7 is inserted from the flange part side (D side in FIG. 7) of the switch cap 5, and the tip of the switch element 7 is in contact with the surface C in FIG.
FIG. 8 is a diagram showing a state when the switch cap 5 is inserted in the first embodiment of the present invention. The above-mentioned substrate holder 8 has a complicated uneven shape, and the wall portion G adjacent to the insertion position of the switch cap 5 is approximately 20 degrees so that the space becomes narrower as it goes deeper when the switch cap is inserted. The wall portion G is erected with an inclination of an angle, and the shape of the top of the wall portion G has a round shape.

Next, the operation will be described. When the switch cap 5 is set on the substrate holder 8, while the switch cap 5 is pushed from above and inserted into the boss portion K of the substrate holder 8, the claw F is the top of the wall portion G of the substrate holder 8. It rotates in a direction perpendicular to the direction pushed in while being guided by the round shape of the part, and the direction is corrected. At this time, since the circular pipe portion of the switch cap 5 is supported by the boss portion K, there is no backlash during rotation, and the switch cap 5 can be reliably rotated. Then, when the setting is completed at the position where the tip of the switch cap 5 is in contact with the bottom of the emergency operation switch 2, the orientation of the connection portion E of the switch cap 5 is that of the wall portion G of the substrate holder 8 as shown in FIG. 9. It is automatically positioned at a position substantially parallel to the longitudinal direction.
The positioning mechanism need not be limited to the mechanism shown in FIG. For example, a notch portion that is obliquely cut from the tip of the circular tube portion of the switch cap 5 to a predetermined position in the longitudinal direction is formed, and the opening of the notch portion at the tip portion is made larger than other portions, and the substrate holder 8 A convex portion having a size slightly larger than the cutout portion is provided in a position corresponding to the cutout portion of the switch cap 5 in the boss portion K of the lid. At the time of assembly, after the switch cap 5 is inserted into the boss portion K, when the tip of the switch cap is caught by the convex portion of the boss portion K, the switch cap 5 is rotated by hand while lightly pushing the switch cap. At this time, when the notch part at the tip of the switch cap and the convex part of the boss part K are engaged, it can be recognized that they are engaged because they are inserted. Therefore, when the switch cap is further pushed in by hand, the switch cap 5 can be automatically rotated along the oblique cut portion while engaging the convex portion of the boss portion K. Thereby, when the tip of the switch cap reaches the position where it contacts the emergency operation switch 2, the direction of the connection portion E of the switch cap 5 is automatically positioned in a desired direction. Reaches the final position of the notch and positioning is completed.

  In the conventional structure shown in FIG. 10, there is a problem that the switch cap floats due to a burr portion that is insufficiently removed when the runner is cut, and the operation of the switch becomes defective due to galling or assembly failure. As a result, the switch cap connecting part E does not run on the wall of the board holder, so that the assembly can be performed reliably. It is possible to avoid malfunction of the switch.

Embodiment 2. FIG.
The first embodiment has been described on the assumption that the switch cap is manufactured separately from the substrate holder, but the switch cap may be manufactured integrally with the substrate holder. In this second embodiment, such a mode will be described.
FIG. 11 is a view after the switch cap is molded according to the second embodiment of the present invention.
The substrate holder 8 and the switch cap 5 are integrally molded by plastic injection molding using the same mold. FIG. 12 is a partially enlarged view of the switch cap in FIG. At the time of manufacturing a switch cap by extending the same angle as the tip of the claw F provided at the end of the connection E, and providing a thin part J in the liner connecting the claw F and the substrate holder. It is the structure used as a cutting part. Since there is the thin portion J, the producer can clearly grasp the cut portion and never make a mistake. In addition, if it shape | molds so that a linear cutting mark may be raised in the thin part J, for example, a cutting location will be clarified more accurately.

  Since the structure is as described above, it is possible to reduce the manufacturing cost of the same mold, and to stabilize the product quality by clarifying the cutting location when the switch cap is manufactured.

It is a front view of the indoor unit of the air conditioner in Embodiment 1 of this invention. It is an enlarged view of the emergency operation switch part in Embodiment 1 of this invention. It is AA arrow sectional drawing of FIG. It is a perspective view which shows the part of the state which removed the design panel of the air conditioner in Embodiment 1 of this invention. It is an enlarged view of the substrate holder in Embodiment 1 of this invention. It is a figure which shows the state which displayed the electronic substrate in Embodiment 1 of this invention. It is an enlarged view of the switch cap in Embodiment 1 of this invention. It is a figure which shows the state 1 at the time of switch cap insertion in Embodiment 1 of this invention. It is a figure which shows the state 2 at the time of switch cap insertion in Embodiment 1 of this invention. It is a figure which shows the state at the time of the conventional switch cap insertion in Embodiment 1 of this invention. It is a figure after switch cap molding in Embodiment 2 of this invention. It is the elements on larger scale of the switch cap in Embodiment 2 of this invention.

Explanation of symbols

  1 Design panel, 2 Emergency operation switch (Emergency operation switch cover), 3 Remote control light receiving window, 4 LED display, 5 Switch cap, 6 Electronic board, 7 Switch element, 8 Board holder, 9 Indoor unit, 10 Buzzer, 11 Connection Terminal, 12 Integrated circuit, 13 Remote control light receiving element, 14 LED element, B Hinge part, C Emergency operation switch surface, D flange part, E connection part, F claw part, G wall part, H burr part, J Thin part, K Boss part.

Claims (7)

A switch cover attached to the design panel;
A substrate holder connected to the container via a hinge and having a lid portion having a tubular boss at a position corresponding to the switch cover; and a substrate holder attached to the back side of the design panel;
A substrate that is housed in a container of the substrate holder and mounts the switch element at a position corresponding to the switch cover;
Interpolating a space between the switch cover and the switch element, and a switch cap provided so that a pressing force from the switch cover is transmitted to the switch element,
A switch assembly structure, wherein the substrate holder is provided with a positioning mechanism for positioning the switch cap by rotating the switch cap to a predetermined position when the switch cap is inserted into the boss during assembly. A design panel in which holes are formed at predetermined positions;
A switch cover having a bottom portion located on the back surface of the design panel and having a larger area than the hole, and a rod-shaped operation portion that is erected from substantially the center of the bottom portion and is inserted into the hole;
A substrate holder having a container and a lid connected to the container via a hinge, and attached to the back side of the design panel;
A substrate that is housed in a container of the substrate holder and mounts the switch element at a position corresponding to the switch cover;
Interpolating a space between the switch cover and the switch element, and a switch cap provided so that a pressing force from the switch cover is transmitted to the switch element,
The switch cap includes a circular tube that is inserted with the switch element during assembly and is rotatable about the switch element, a flange portion that extends from the one end of the circular tube in an outer circumferential direction, and a flange portion. A claw having a connection part in which a part of the periphery of the part further extends in a strip shape in the outer peripheral direction, and an inclined surface extending substantially perpendicularly to the end of the connection part and becoming narrower as it goes to the tip. With
A lid portion of the substrate holder is provided at a position corresponding to the switch cover, and a tubular boss portion into which the switch cap can be inserted, and adjacent to the boss portion, as the assembly proceeds in the insertion direction of the switch cap at the time of assembly. A switch assembly structure comprising: a wall portion having a round-shaped top portion that is erected with an inclination so that the space is narrowed.   When the switch cap is assembled, the claw portion abuts on the top of the wall portion, and then proceeds to the back while rotating along the inclination of the wall portion, and further contacts the bottom of the switch cover through the boss portion. The switch assembly structure according to claim 2, wherein the switch assembly structure is in contact.   The switch cap is manufactured integrally with the substrate holder by injection molding, and the runner portion that connects the claw portion and the substrate holder includes a thin portion that becomes a cutting point when the switch cap is manufactured. The switch assembly structure according to claim 2, wherein the switch assembly structure is a switch assembly structure.   The switch assembly structure according to claim 4, wherein the thin portion has a cut mark that rises linearly on the surface thereof.   An indoor unit of an air conditioner comprising the switch assembly structure according to any one of claims 1 to 5, wherein the switch element is for emergency operation. In the switch assembly method used for the switch assembly structure according to claim 2,
Inserting the switch cap into the boss of the lid of the substrate holder;
Folding the container portion of the substrate holder at the hinge portion and combining the switch element with the lid portion of the holder while inserting the switch element into the switch cap, and
In the step of inserting the switch cap into the boss portion of the lid of the substrate holder, the switch cap abuts on the top of the wall portion, and then proceeds to the back while rotating along the inclination of the wall portion, The switch assembly method is characterized in that the mounting is completed at a position where it comes into contact with the bottom of the cover through the boss.

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