JP4270043B2 - Air conditioner - Google Patents

Description

  The present invention particularly relates to an air conditioner equipped with a movable grill mechanism.

  A movable grill used in a conventional air conditioner is installed on the front surface of the main body casing and supported so as to be movable downward, and is floated on the air sucked into the air conditioner provided inside the movable grill. This is in consideration of the cleaning workability of an air filter that removes dust, dust, and the like (see, for example, Patent Document 1).

JP 2001-182957 A (pages 6-7 and 15-17)

  The movable mechanism of the front grille (front panel) in the conventional air conditioner has an electric mechanism including an electric motor, gears, and a rotating shaft. When the front panel opening / closing switch by a remote controller or the like is turned on, the electric motor is operated. The air filter is exposed by moving the front panel downward. In this state, the air filter is directly cleaned or removed and cleaned, and then the front panel closing switch is turned on and the front panel is simply closed by an electric motor. When the front panel is opened or closed, the user (human) There is a problem that a protection mechanism is not provided when the finger is caught between the front panel and the main body casing.

  The present invention has been made to solve the above-described problems. When a load torque exceeding a predetermined value is generated in a drive unit for driving the front grille, the protection mechanism is activated and the user can It is possible to obtain a highly safe air conditioner that prevents injuries and the like.

Further, in the driving operation of the front grille, the design is improved by correcting the left and right distortions and ensuring the horizontal state of the front grille.
Further, the mounting workability of the drive unit for driving the front grille via the shaft to the main body casing is improved.

An air conditioner according to the present invention includes a front grill that forms a front portion of the air conditioner, a shaft that is connected to an arm that moves the front grill in a vertical direction, and a drive source that transmits rotational torque to the shaft. And a final stage gear fixed to the shaft and meshed with a gear of the drive part to receive transmission torque, and the drive part is configured to be separable from the final stage gear of the shaft and is air-conditioned. A load that exceeds a predetermined load torque is generated by a clutch mechanism comprising a friction spring that is fixedly attached to the machine body and fixed between a pinion gear portion built in the drive unit and a coaxial gear unit. The rotary drive is released when

The air conditioner of the present invention has a front grill that forms a front portion of the air conditioner, a shaft that is connected to an arm that moves the front grill in the vertical direction, and a drive source that transmits rotational torque to the shaft. An air conditioner comprising: a drive unit; and a final gear that is fixed to the shaft and meshes with a gear of the drive unit and receives transmission torque. The drive unit is configured to be separable from the final gear of the shaft. A load that exceeds a predetermined load torque is generated by a clutch mechanism comprising a friction spring that is fixedly attached to the main body independently and is wound around and fixed between a pinion gear portion built in the drive portion and a coaxial gear portion. since release rotary driving when the user accidentally even across the fingers between the body and the front grill, the gear of the driving part becomes locked, the user Can regulate the closing operation of the front grill without us, model improves safety and is intended to improve the mounting workability of the front grill to the main body of the drive unit for driving through a shaft.

Embodiment 1 FIG.
Embodiment 1 of the present invention will be described with reference to FIGS.

  FIG. 1 is an external perspective view of the air conditioner of the present invention. In the figure, 1 is a front grill disposed on the front surface of the main body panel portion 2 of the air conditioner and forms a front portion, 15 is a top suction port at the top of the main body panel portion 2, and the front grill 1 is the main body panel portion. 2 is shown in the closed state.

FIG. 2 is a perspective view showing a state where the front grill 1 is opened in the air conditioner of the present invention. In the figure, 3 is an arm provided on the left and right to open and close the front grill 1, 4 is an auxiliary arm provided below the arm 1, and the front grill 1 and the main body panel unit 2 are as shown in FIG. Are the same.
The pair of left and right arms 3 are configured such that one end is fixed to a shaft 5 that is rotationally driven and the other end is pivotally supported by the front panel 1. The front panel 1 is connected to the main body panel portion 2 according to the rotation angle of the shaft. An operation of lifting the front panel 1 to the upper side of the front side, or conversely attaching the front panel 1 to the main body panel 2 side is performed. Further, the auxiliary arm 4 is provided in a pair of left and right at a predetermined interval below the arm 3. One end of the auxiliary arm 4 is pivotally supported by the main body panel portion 2 and the other end is pivotally supported by the front panel 1. And has a function of correcting distortion caused by the weight of the front panel 1. By providing this auxiliary arm 4, the front grill 1 is kept horizontally horizontal when opening the front grill 1 away from the main body panel portion 2, and the main body panel portion when closing the front grill 1. 2 can be stored without touching smoothly.

  When the front panel 1 shown in FIG. 1 is closed, the operation of the blower provided inside the main body panel unit 2 is stopped, and the operation of sucking room air and blowing it out from the outlet is not performed. In the state where the front panel 1 shown in FIG. 2 is opened, the blower is driven to suck indoor air from the space between the upper surface inlet and the front grill 1 and the main body panel portion 2, and passes through the heat exchanger to be air-conditioned. It becomes the case of the air-conditioning operation which blows off the done air from the blower outlet below the main body.

  FIG. 3 is an internal configuration diagram in which the front grill 1 is removed from the air conditioner shown in FIG. Arms 3 are fixed to both ends of a single shaft 5 rotatably attached to the front upper part of the main body panel portion 2. The shaft 5 has a length substantially equal to the width of the main body panel portion 2 in the left-right direction, and is accommodated between the front grill 1 and the main body panel portion 2 that are pivotally supported by the arms 3 at both ends. Further, a final gear 6 is fixed to the shaft 5 at a position facing the vicinity of the control device disposed on the right side while avoiding the mounting position of the heat exchanger in the main body panel portion 2. As the gear 6 rotates, the shaft 5 also rotates at the same rotation angle, and the front grill 1 opens and closes from the main body panel portion 2 by the interlocking rotation of the arms 3 fixed to both ends of the shaft 5. The auxiliary arms 4 are provided in a pair of left and right in the vicinity of the left and right sides of the main body panel 2 with a predetermined interval below the arm 3. The auxiliary arm 4 is rotatably attached independently of the arm 3 connected to the shaft 5.

  FIG. 4 is a configuration diagram in which the arm 3 and the final gear 6 are provided on the shaft 5 shown in FIG. 3. If the shaft 5 has a square or more polygonal cross section, the final gear 6 and the arm 3 have an insertion hole corresponding to the cross-sectional shape, and the shaft 5 is simply inserted into the insertion hole. Can be fixedly installed. With this configuration, when rotational power is transmitted to the final gear 6, the shaft 5 rotates about the major axis direction according to the rotation angle of the final gear 6. Then, the arm 3 having the shaft 5 as the rotation center is rotated by the rotation amount of the shaft 5, and the rotational power input to the final gear 6 is transmitted to the rotational motion of the tip opposite to the shaft of the arm 3. It is what is done.

  5 is a disassembled configuration diagram in which the main body panel portion is removed from the internal configuration diagram shown in FIG. 3, and the arm 3, the auxiliary arm 4, the shaft 5 and the final gear 6 are the same as those in FIG. In the figure, reference numeral 7 denotes a drive unit that rotates a last gear 6 fixedly installed on the shaft 5 in order to move the front grille in the vertical direction. The drive unit 7 is fixedly attached to the main body panel unit 2 independently of the shaft 5, and is engaged with and coupled to the final gear incorporated in the drive unit corresponding to the final gear 6 provided on the shaft 5. Yes.

  6 is an external view of the drive unit showing the external appearance of the drive unit, and FIG. 7 is an internal configuration diagram of the drive unit showing a reduction gear provided in the drive unit. In FIG. 6, the drive unit 7 is composed of an outer case in which an electric rotating unit as a driving power source and a plurality of reduction gears are integrated, and the fixing leg 14 is formed integrally with the case. Moreover, the last stage gear fixed to the shaft 5 which receives the rotational power of the drive part 7 is shown by the dotted line. An opening is provided in the drive unit case where the final gear and the final gear (gear) built in the drive unit 7 are engaged, and the shaft 5 and the drive unit 7 having the final gear are individually provided. To the main body panel.

  In the internal configuration diagram of the drive unit in FIG. 7, 12 is a motor unit (electric rotating unit) of a driving power source, 8 is a first gear meshing with the rotation shaft of the motor unit, and 11 is a plurality of deceleration gears from the first gear 8. A final gear 6 connected via a gear is a final gear fixed to the shaft 5. Of the plurality of gears built in the drive unit, the final gear 11 is the largest diameter gear. Corresponding to the final gear 11, the final gear 6 has the same large diameter. Thereby, after attaching the drive part 7 to the main body panel part 2 using the fixing leg 14, the final stage gear 6 fixed to the shaft 5 is engaged with the final gear 11 of the drive part 7 so that the main body panel is engaged. The work of attaching to the portion 2 can be easily performed because the gear diameter is large, and workability can be improved.

  FIG. 8 is a configuration diagram of the first gear 8 disposed in the drive unit 7 shown in FIG. The gear 8 has a configuration in which two parts of a gear portion 8c that meshes with the rotating gear of the motor portion 12 shown in FIG. 7 and a pinion gear portion 8a that transmits the rotation of the first gear 8 to the next gear are coupled coaxially. I am doing. A friction coil spring 8b is wound around one end of the pinion gear portion 8a, and the tip of the friction spring 8b is bent into an L shape. Is a structure that is sandwiched and fixed. When the friction spring 8b is wound up depending on the rotation direction of the gear portion 8c, the transmission torque received from the motor side by the gear portion 8c is transmitted to the pinion gear portion 8a. When the gear portion 8c rotates in the reverse rotation direction and the friction spring 8b is loosened, the predetermined transmission torque from the gear portion 8c to the pinion gear portion 8a is not transmitted because the pinion gear portion 8a rotates idle. The clutch mechanism can release the rotational drive. In FIG. 8, the friction spring 8b is shown as a spring in which a linear member is spirally wound. However, the invention is not limited to this, and a friction spring having a plate spring shape in which a plate member is wound concentrically may be used. Similar effects can be obtained.

Next, the overall operation will be described.
In the air conditioner in a state where the front grill 1 shown in FIG. 1 is closed in contact with the main body panel portion 2, torque necessary for moving the front grill 1 to the open side is generated by the drive unit 7 shown in FIG. 6. . The drive torque generated by the drive unit 7 is transmitted to the final gear 6 shown in FIG. 4 through a plurality of gears. The transmitted torque required to open the front grille 1 is transmitted as a rotational motion to the shaft 5 having the final gear 6 and is connected to the arm 3 from the arm 3 fixed on both sides of the shaft 5. This is transmitted to the grill 1, whereby the front grill 1 is moved forward and upward from the main body panel to realize an air conditioner with the front grill 1 opened as shown in FIG.

  Further, in the air conditioner with the front grille 1 shown in FIG. 2 opened, the rotation direction of the motor unit 12 provided in the drive unit 7 is set to the opposite direction to the operation of opening the front panel 1. Then, the front grille 1 is moved in the closing direction by the reverse operation. In the case of the rotation direction in which the motor unit provided in the drive unit 7 is rotated in the direction in which the front grill 1 is closed to the main body panel 2 side, the gap between the front grill 1 and the main panel 2 shown in FIG. When the user (user) accidentally pinches his / her finger, the gear of the driving unit 7 is locked from the front grill 1 through the arm 3, the shaft 5 and the final gear 6. The motor unit 12 of the drive unit 7 works in a direction in which torque is further generated. However, when the friction spring 8b provided on the first gear 8 of the drive unit 7 is loosened and the pinion gear unit 8a idles, a certain predetermined transmission torque Is not transmitted to the front grill 1, and the operation of closing the front grill without any injury to the user can be restricted. Then, the user who notices that he / she has pinched his / her finger immediately removes his / her finger, and after the load applied to the front panel 1 is removed, the front panel 1 is attached to the main body panel portion 2 by the motor unit rotational power of the drive unit. It can be stored in contact with the side.

  In the above-described embodiment, the first gear 8 built in the drive unit 7 has the friction spring 8b. However, this is not limited to the first gear, and can be applied to any of a plurality of reduction gears. Can do. In the present embodiment, a friction spring 8b is provided on the first gear 8 adjacent to the motor portion 12 of the drive source so as to reduce the loss of transmission torque.

1 is an external perspective view of an air conditioner according to Embodiment 1 of the present invention. It is a perspective view of the front grille opened state of the air conditioner concerning Embodiment 1 of the present invention. It is an internal block diagram of the air conditioner which concerns on Embodiment 1 of this invention. FIG. 4 is an assembly configuration diagram of a shaft, an arm, and a final gear shown in FIG. 3. 1 is a disassembly configuration diagram of an air conditioner according to Embodiment 1 of the present invention. It is an external view of the drive part of the air conditioner which concerns on Embodiment 1 of this invention. It is an internal block diagram of the drive part shown in FIG. It is a block diagram of the 1st gearwheel arrange | positioned at the drive part of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Front grille, 2 Main body panel part, 3 Arm, 4 Auxiliary arm, 5 Shaft, 6 Final gear, 7 Drive part, 8 First gear, 8a Pinion gear part, 8b Friction spring, 8c Gear part, 11 Final gear, 12 motor parts, 14 fixing legs, 15 upper surface inlet.

Claims (5)

A front grill that forms the front portion of the air conditioner, a shaft that is connected to an arm that moves the front grill in the vertical direction, a drive unit that has a drive source that transmits rotational torque to the shaft, and a fixed to the shaft A final gear that meshes with the gear of the drive unit and receives transmission torque, and the drive unit is configured to be separable from the final gear of the shaft and is fixedly attached to the air conditioner body independently. At the same time, a clutch mechanism comprising a friction spring wound around and fixed between a pinion gear portion built in the drive portion and a coaxial gear portion releases the rotational drive when a load exceeding a predetermined load torque occurs. An air conditioner characterized by that. The predetermined load torque is a load torque that is not injured when a user's finger is caught between the main body panel of the air conditioner and the front grill when the front grill is closed. Air conditioner. Driver gear meshing with the final gear having the shaft and the final stage gear, according to claim 1 or claim 2, characterized in that the maximum diameter of the gear diameter among the reduction gear of the driving part Air conditioner as described in. When the front grill is moved in the vertical direction, a pair of right and left correction arms are provided so as to pivotally support between the main body panel and the front panel to correct distortion due to the weight of the front grill. The air conditioner according to any one of claims 1 to 3. The air conditioner according to any one of claims 1 to 4, wherein the drive unit stores a motor unit of a drive source and a gear having the clutch mechanism so that an outer shell integrally covers the outer case.

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