JPH075827U - Structure to prevent the horizontal blades for adjusting the wind direction from falling off - Google Patents

Abstract

(57) [Summary] [Problem] To provide an air blowing device such as an air conditioner having a structure capable of completely preventing the horizontal blades for wind direction adjustment from being disconnected from each other without increasing the size and reducing the ventilation efficiency. [Structure] A plurality of wind direction adjusting horizontal blades (2) are juxtaposed on a front surface of an air conditioning case body (1) to horizontally support the horizontal blades (2), and the horizontal blades (2) are horizontally provided at rear end edges of the horizontal blades (2). C-shaped clamps (4a) attached to the connecting rod (4) are fitted to the pin shafts (3) from the rear, and the horizontal blades (2) are simultaneously moved by operating the operation knob (5). A pair of parallel flange portions (3a, 3a) is provided at the end of the pin shaft (3) of the horizontal blade (2) arranged at least at the end of the air blowing device such as a vehicle air conditioner that is rotated. The flange part (3a, 3a
A stopper (3b) having a sliding contact surface between a) which slidably contacts the outer circumferential arc surface of the C-shaped clamp (4a) of the connecting rod (4).
Has been erected.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 TECHNICAL FIELD The present invention relates to a connecting rod disengagement prevention structure for preventing a connecting rod for interlockingly rotating a horizontal blade for adjusting a wind direction of an air blowing device installed in a vehicle or the like from being easily separated from the horizontal blade.

[0002]

[Prior art]

 As shown in FIG. 5, both end shafts of a plurality of horizontal blades 2 ′ are rotatable in parallel with the front surface of the air conditioning case body 1 in the air blower of the air conditioner or ventilation device installed in the vehicle. Is supported by. As shown in FIG. 6, notches 2a 'are formed at a part of the rear edge of each horizontal blade 2', and the ends of each notch 2a 'are connected by a pin shaft 3'. ing. A plurality of C-shaped clamps 4a attached to the connecting rod 4 are fitted to the pin shaft 3'from the rear at the same intervals as the arrangement intervals of the plurality of horizontal blades 2 '. , The horizontal blades 2 ′ are slidably inserted into some of the horizontal blades 2, and the operation knobs 5 projecting forward from the blades 2 are moved up and down to move the horizontal blades 2 ′ through the single connecting rod 4. It is designed to rotate in unison with each other.

A plurality of vertical blades 6 are vertically arranged in parallel behind each horizontal blade 2 ′ and are axially supported on the upper and lower wall surfaces of the air-conditioning case main body 1. The rear end of the operation knob 5 is locked, and by moving the operation knob 5 to the left and right, all the vertical blades 6 are simultaneously rotated to the left and right via a link (not shown). Reference numeral 7 in FIG. 5 is an air volume adjusting valve for rotating up and down about its center to adjust the amount of air blown out.

By the way, in general, the horizontal blades 2 ′ that are inserted into the operation knob 5 are often horizontal blades located in the upper and lower central portions. This is because the force is most reasonably transmitted in order to smoothly move the connecting rod 4 up and down.

[0005]

[Problems to be solved by the device]

 However, the horizontal blade is often moved vertically with a finger without operating the operation knob. In this operation, the uppermost or lowermost blade 2'of the plurality of horizontal blades 2'is usually moved by a finger as shown in FIG. At this time, if the force is smoothly transmitted to the intermediate horizontal blade 2'through the connecting rod 4, a force larger than that required when operating the operating knob 5 is required. Rotation will cause it to rotate more than usual. As a result, there is a problem that the tip of the C-shaped clamp 4a made of synthetic resin and easily elastically deformed is opened outward as shown by the phantom line in the figure, and the pin shaft 3'is disengaged from the clamp 4a. . In order to deal with this problem, the simplest method is to increase the strength of the connecting rod 4 and the clamp 4a, but in order to do so, the link diameter and the clamp diameter must be increased, and space is also required. The reality is that it cannot be used in terms of ventilation efficiency. Therefore, an object of the present invention is to provide an air blowing device such as an air conditioner having a structure capable of completely preventing disconnection of the link without causing an increase in size and a decrease in ventilation efficiency.

[0006]

[Means for Solving the Problems]

 In order to achieve such an object, the present invention has a plurality of wind direction adjusting horizontal blades arranged in parallel on the front surface of an air-conditioning case body to horizontally support the air-conditioning case body. In an air blowing device such as a vehicle air conditioner in which each C-shaped clamp attached to the connecting rod is fitted to the pin shaft from the rear and the horizontal blades are simultaneously rotated by operating the operation knob. A flange portion formed at least parallel to the end portion of the pin shaft of the end horizontal blade, and a sliding contact surface slidingly contacting the outer circumferential arc surface of the C-shaped clamp of the connecting rod is provided between the flange portions. The main structure is a structure for preventing disconnection of the horizontal blades for adjusting the wind direction, which is characterized in that the stoppers that it has are installed.

The stopper may be installed in two places with the pin shaft sandwiched within the rotation range of the horizontal blade. In addition to the stopper, a connection between the pin shaft and the blade serves as a second stopper. They may be connected by one piece, and when these structures are adopted, the function of preventing disconnection is further ensured.

[0008]

[Action]

 Even if the bottom horizontal blade is to be pivoted downward with a finger, the pin axis of the horizontal blade is always provided with the inner surface of the plate-shaped stopper parallel to the blade body at the lower end of the connecting rod. Since it is in contact with the outer peripheral surface of the V-shaped clamp, a part of the clamp is pinched between the pin shaft and the stopper, and the elastic deformation of the clamp is reliably prevented, and its tip is outward. Do not open to. Therefore, the connecting rod is completely prevented from coming off from the pin axis, and since the stopper is formed substantially parallel to the horizontal blade, the ventilation resistance hardly increases. Moreover, since the stopper for preventing disengagement of the connecting rod is integrally installed between the pair of flanges protruding from both ends of the cutout portion of the horizontal blade, the strength of the stopper itself is secured.

[0009]

【Example】

 Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings. The basic structure and function of each member except the horizontal blades in the air blowing device adopting the present invention are substantially the same as the conventional structure and function described above and shown in FIG. The description will be centered on the blade and the connecting rod for rotation. In the drawings, the same reference numerals indicate substantially the same members.

FIG. 1 is a perspective view showing an essential part of a horizontal blade having a structure for preventing the connection of the horizontal blade for adjusting the wind direction, which is a typical first embodiment of the present invention, and FIG. FIG. 8 is an explanatory view of the action of the continuous rod disengagement prevention mechanism by In these drawings, reference numeral 2 is a horizontal blade, and 4 is a connecting rod for rotating the horizontal blade. In this embodiment, both end shaft portions of the plurality of horizontal blades 2, 2 '... Are rotatably supported in parallel with the front inner wall surface of the air conditioning case body 1 as in the conventional case shown in FIG. . A notch is formed at the rear end edge of each of the horizontal blades 2, 2 '... and the ends of each notch are connected to each other by pin shafts 3, 3'. A plurality of C-shaped clamps 4a attached to the connecting rod 4 at the same intervals as the arrangement intervals of the plurality of horizontal blades 2 are fitted to these pin shafts 3, 3 '... The connecting rod 4 is connected to each of the horizontal blades 2, 2 '... An operating knob 5 is slidably inserted in a part of the horizontal blades 2'of the above-mentioned plurality of horizontal blades 2, 2 '... When the operating knob 5 is moved up and down, the connecting rod 4 is moved. The horizontal blades 2 are interlocked with each other to rotate in unison.

The feature of the present invention resides in the structure of the horizontal blade 2 arranged at the lowermost stage of the horizontal blades 2, 2 ′, which is outward from both ends of the cutout portion of the horizontal blade 2. Substantially circular flanges 3a, 3a are formed in parallel, and the pin shaft 3 is provided by connecting the substantially central portions of both flanges 3a, 3a. Further, the diameters of the both flanges 3a, 3a are set to be substantially the same as the outer diameter of the C-shaped clamp 4a protruding orthogonally from the end portion of the connecting rod 4. A plate-shaped stopper 3b, which is a main part of the present invention, is installed on the flanges 3a, 3a so as to be substantially parallel to the blade body 2a and to connect the outer peripheral surfaces of the flanges 3a, 3a. There is.

A C-shaped clamp 4a formed at the lower end of the connecting rod 4 is fitted from the rear side to the pin shaft 3 of the horizontal blade 2 having the connecting rod disengagement preventing structure of the present invention having the above-mentioned structure, and The C-shaped clamps 4a, 4a, ... Formed in multiple stages on the connecting rod 4 are sequentially fitted to the pin shaft 3'of the horizontal blade 2'having the same structure as the conventional one. FIG. 2A shows the state of this fitting.

In the state shown in FIG. 2A, when the uppermost horizontal blade 2 is rotated by a large amount with a finger, the pin shaft 3 at the lower end is rotated as shown by an imaginary line in FIG. 2A. Since the inner surface of the plate-shaped stopper 3b parallel to the main body 2a of the horizontal blade 2 is always in contact with the outer surface of the C-shaped clamp 4a at the lower end of the connecting rod 4, the pin shaft 3 and the stopper 3b are not in contact with each other. A part of the clamp 4a is pinched between the clamps, preventing elastic deformation of the clamp 4a and preventing the tip of the clamp 4a from opening outward. Therefore, the connecting rod is completely prevented from coming off the pin axis, and the stopper 3b is formed substantially parallel to the horizontal blade main body 2a, so that the ventilation resistance hardly increases. Moreover, since the stopper 3b for preventing the connecting rod from coming off is integrally installed between the pair of left and right flanges 3a, 3a protruding outward from both ends of the cutout portion of the horizontal blade main body 2a, the strength of the stopper 3b itself is also increased. Secured enough.

3 and 4 show a second embodiment of the present invention. As shown in FIG. 3, according to the second embodiment, in addition to the structure of the first embodiment, the cutout portion of the horizontal blade 2 is provided. Therefore, the horizontal blade main body 2a and the pin shaft 3 are connected by a plate-shaped second stopper 3c having a thickness smaller than the diameter of the pin shaft 3. With this configuration, when the horizontal blade 2 is connected to the connecting rod 4 via the pin shaft 3, the stopper 3b comes into contact with the outer peripheral surface of the C-shaped clamp 4a, and the second portion is provided in the opening of the clamp 4a. The stopper 3c is inserted.

In such a state, as shown in FIG. 4 (a), when the horizontal blade 2 at the lower end is rotated counterclockwise around its rotation shaft portion and an unreasonable force F is applied, the pin shaft 3 becomes When the C-shaped clamp 4a is opened and tries to come off, the elastic deformation is prevented by the stopper 3b which abuts on the outer peripheral surface of the clamp 4a at the same time, so that it does not come off in this state. Further, at this time, the second stopper 3c is in contact with the opening end surface of the C-shaped clamp 4a on the side opposite to the stopper 3b, so that the horizontal blade 2 is prevented from further rotating. On the other hand, as shown in FIG. 4 (b), when the lower horizontal blade 2 is rotated in the clockwise direction about its rotating shaft, the pin shaft 3 tries to open by opening the C-shaped clamp 4a. However, at the same time, movement of the pin shaft 3 is blocked by the stopper 3b that comes into contact with the outer peripheral surface of the clamp 4a, so that the pin shaft 3 does not come off in this state. At the same time, the second stopper 3c is in contact with the opening end face of the C-shaped clamp 4a on the same side as the stopper 3b, and the horizontal blade 2 is prevented from rotating further.

[0016]

[Effect of device]

 As described in detail above, according to the present invention, the front end portion of the connecting rod for interlocking and simultaneously rotating the plurality of horizontal blades for adjusting the wind direction in the air blowing device such as the air conditioner. On a horizontal blade having a pin shaft that fits into the C-shaped clamp formed on, a plate-like stopper is erected integrally between a pair of flanges formed at the left and right ends of the pin shaft, Since the inner surface of the stopper is in sliding contact with the outer peripheral surface of the clamp, the strength of the stopper is ensured and a part of the C-shaped clamp whose opening is easy to open outward serves as the pin shaft and the stopper. Therefore, the clamp is always clamped, and even if an attempt is made to rotate the horizontal blade by applying an unreasonable force, the clamp does not deform and the connecting rod does not come off from the horizontal blade. Further, since the stopper is provided substantially parallel to the main body of the horizontal blade, it does not lower the ventilation resistance.

[Brief description of drawings]

FIG. 1 is a perspective view showing a main part of a horizontal blade for adjusting a wind direction having a structure for preventing removal of a connecting rod according to a first embodiment of the present invention.

FIG. 2 is an explanatory view of the function of the connection rod disengagement prevention structure.

FIG. 3 is a perspective view showing a main part of a horizontal blade for adjusting a wind direction having a connecting rod disengagement preventing structure according to a second embodiment of the present invention.

FIG. 4 is a functional explanatory diagram of the continuous rod disengagement prevention structure.

FIG. 5 is a vertical sectional view of a general air blowing device.

FIG. 6 is an exploded perspective view showing a conventional connecting structure of a horizontal blade and a connecting rod.

FIG. 7 is an explanatory view of a connecting rod disengaging mechanism having a connection structure of the horizontal blade and the connecting rod.

[Explanation of symbols]

 1 Air Conditioning Case Body 2, 2'Horizontal Blades 2a, 2a 'Main Body 3, 3'Pin Shaft 3a Flange 3b (First) Stopper 3c Second Stopper 4 Linking Rod 4a Clamp 5 Operation Knob 6 Vertical Blade 7 Air Volume Control Valve

Claims (1)

[Scope of utility model registration request] 1. A plurality of wind direction adjusting horizontal blades (2) are arranged side by side on a front surface of an air conditioning case body (1) to horizontally support the air conditioning case body (1).
The C-shaped clamps (4a) attached to the connecting rod (4) are fitted from the rear to the pin shafts (3) horizontally provided on the rear end edges of the respective horizontal blades (2), In an air blowing device such as a vehicle air conditioner in which each horizontal blade (2) is simultaneously rotated by operating an operation knob (5), at least an end of the pin shaft (3) of the end horizontal blade (2). And a C-shaped clamp (4) of the connecting rod (4) between the flanges (3a, 3a).
(a) A stopper (3b) having a sliding contact surface that slidably contacts the outer circumferential circular arc surface is erected, and the structure for preventing the horizontal direction blades for adjusting the wind direction from being disengaged.