JPH0120582Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a hot air heater equipped with a hot air outlet.

(b) Conventional technology Conventionally, a hot air heater with a removably attached protective guard in front of the hot air outlet was developed in 1986-64942.
The conventional structure thereof will be explained with reference to FIGS. 1 and 2. 1 is a frame rod made by bending a wire rod and having an approximately square-shaped shape when viewed from the front and a roughly C-shape when viewed from the side, with upper and lower rods 1a and 1b in contact with the front panel 2 of the hot-air heater A; 3, 3, . . . A large number of guard rods 4, which are approximately C-shaped in side view and installed in the space surrounded by the frame rod 1, are formed of wire rods in a square shape, and their base ends are attached to both side frames 1c and 1d of the frame rod 1. This is a fixed arm that is engaged and rotatable, and has fixed portions 4a, 4a at the tips thereof in contact with the back surface of the heater A. Then, the upper and lower rods 1a and 1b of the frame rod 1 are brought into contact with the front panel 2 so that the guard rods 3, 3... cover the front of the lower hot air outlet 5 provided on the front panel 2 of the heater A. , rotate the fixed arm 4 to abut the fixed part 4a on the back of the heater A, and then attach the fixed part 4a to the mounting brackets 6, 6.
It was fixed to the back of the heater A using screws 7, 7, and so on.

In the conventional example with the above configuration, when installing the protective guard B, the left and right separate fixing arms 4, 4 are fixed with the screws 7, 7, etc. using the mounting brackets 6, 6, respectively, so the number of parts is large. Moreover, the assembly thereof was also troublesome.

On the other hand, in the device disclosed in Japanese Utility Model Publication No. 56-24348, the L-shaped locking portions at both ends of the horizontal bar are connected to the front opening by using the spring properties of the horizontal bar to flex the horizontal bar. Although this makes it easier to configure and assemble the protective guard device, it also makes the locking portion more susceptible to plastic deformation due to the large bending of the horizontal bar, and the protective guard device can be easily deformed due to external force. There was a drawback that it easily came off.

(c) Purpose of the invention The present invention was made in view of the above-mentioned conventional technology, and in order to simplify the configuration and facilitate assembly, the elasticity (spring property) of the wire material is utilized to form the locking part into the opening. In the case where it is hooked to the
The purpose is to prevent plastic deformation of the wire while making it difficult for the wire to come off due to external forces.

(d) Structure of the invention In order to achieve the above-mentioned purpose, the present invention provides a protective guard device for a warm air heater having a hot air outlet at the front, which has a rectangular shape when viewed from the front and an approximately U-shape when viewed from the side. A frame rod with the upper and lower rods in contact with the outer periphery of the hot air outlet in the front part, a plurality of guard rods that are approximately U-shaped in side view and fixed to the upper and lower rods of the frame rod, A fixing rod that is attached to at least one of the left and right rods and the plurality of guard rods and has a U-shape in plan view and integrally has a base, a left side, and a right side that are longer than the horizontal dimension of the hot air outlet. , At the tips of the left and right sides of the fixing rod, locking parts for locking to the inner periphery of the hot air outlet are formed by bending inward in a U-shape.
The distance between these U-shaped locking portions is made larger than the lateral dimension of the hot air outlet.

(E) Embodiment An embodiment of the present invention will be described below in detail with reference to FIGS. 3 to 8. Elements that are the same as those of the conventional structure are designated by the same numbers. A is a hot air heater equipped with a combustor inside, 2 is a front panel installed at the front of the heater A, and a louver is attached to the opening 2' opened at the bottom of the panel 2 to open a hot air outlet. 5 is formed. 3, 3... are made by bending wire rods to form a substantially square shape in front view and a substantially U shape in side view, and the upper and lower rods 1
A, 1b is a guard rod made of wire that is attached by brazing or the like to the frame rod 1 that abuts the front panel 2, and the guard rods 3, 3... and the frame rod 1 have recesses 3' inward at appropriate places. , 1'... are formed. Reference numeral 8 denotes reinforcing wire rods attached to the guard rods 3, 3, . . . and the frame rod 1. The frame rod 1, the guard rods 3, 3, . . . and the reinforcing wire 8 constitute a protective guard.

Reference numeral 9 denotes a fixing rod made of a single piece of wire and bent into a substantially U-shape. It has a side 9c integrally, and the left and right sides 9a,
At the distal end portion of 9c, locking portions 10, 10 directed outward are formed by bending inward in a U-shape. Further, the fixing rod 9 is formed such that the horizontal distance t between the openings 2' is smaller than the distance T between the left side 9b and the right side 9c.

Next, to explain the installation method in the above configuration, the protective guard B is attached to the front panel 2 of the heater A.
Then, as shown in FIG. 6, the locking part 10 at the tip of the left side 9b of the fixing rod 9 is engaged with the upper left end of the opening 2', and then the base side 9a is inserted into the recessed parts 3', 3. '...
1', 1', and further press the locking part 10 of the right side 9c inward to bend the base 9a and the left and right sides 9b, 9c as shown in FIG. As shown, by pushing the locking part 10 into the upper right end of the opening 2', the locking part 10 at the tip of the right side 9a engages with the upper right end of the opening 2'. Base side 9a of fixed rod 9
As is clear from FIG.
10 is bent inward, so the base piece 9a
Also, the left and right sides 9b, 9c can be bent easily, and there is no fear that the locking parts 10, 10 will be plastically deformed. Furthermore, the locking portions 10, 10 are bent inward in a U-shape, and the distance T between the locking portions 10, 10 is larger than the horizontal dimension t of the hot air outlet 5, unlike the conventional one. The protective guard B can be securely and stably attached to the front of the front panel 2 by providing a larger elastic return force than a guard whose tip is bent into an L-shape, and by being less likely to come off due to external forces, etc. I can do it. Moreover, unlike the conventional case, a plurality of fixed arms 4, 4, mounting brackets 6, 6, and the mounting brackets 6, 6 are provided.
Protective guard B can be fixed to heater A without using multiple screws 7, 7, etc.
The structure is simple and assembly is easy.

Furthermore, in one embodiment of the present invention, a protective guard B
Although the fixing rod 9 and the fixing rod 9 are attached to the heater A as separate parts, the fixing rod 9 may be welded to the protective guard B and integrated. Furthermore, the lower frame 1b of the frame rod 1 of the protective guard B is the front panel 2 of the hot air heater A.
It may be brought into contact with the front part below the lower end surface.

(f) Effects of the invention The invention is as described above, and has the following effects.

This invention prevents plastic deformation of the fixing rod while allowing it to recover elastically by making the base of the fixing rod as long as possible and providing U-shaped locking parts bent inward at the ends of the left and right sides of the fixing rod. Since the force is increased, the upper and lower rods of the frame rod can be brought into close contact with the outer periphery of the hot air outlet by simply engaging the pair of locking parts of the fixed rod with the inner periphery of the hot air outlet. A protective guard that is large in size relative to the vertical and horizontal dimensions of the heater can be easily and securely attached to the heater.Furthermore, it eliminates the need for conventional mounting hardware and screws, reducing the number of parts and man-hours. This can reduce costs.

Furthermore, since small parts such as screws are not used, the protective guard can be easily and reliably attached by the user, and the screws and the like will not be lost during storage or storage, making reuse impossible.

[Brief explanation of the drawing]

Figure 1 is a perspective view of a hot air heater with a protective guard attached to explain a conventional example, Figure 2 is an exploded perspective view of the protective guard to explain a conventional example, and Figures 3 to 8 are a hot air heater according to the present invention. 3 is a perspective view of the hot air heater with a protective guard attached, FIG. 4 is an exploded perspective view of FIG. 3, and FIG. The figure is a perspective view of the protective guard device, and FIGS. 6 to 8 are diagrams each illustrating the assembled state. A...Hot air heater, B...Protection guard, 1...
Frame rod, 2...Front panel, 3...Guard rod, 3'...
...Recess of guard rod, 9... Fixed rod, 9a... Base, 9b, 9c... Side, 10... Locking part.

Claims (1)

[Scope of utility model registration request] A protective guard device for a hot air heater having a hot air outlet on the front part has a square shape when viewed from the front and a substantially U shape when viewed from the side, and the upper and lower rods are in contact with the outer periphery of the hot air outlet on the front part. a frame rod, a plurality of guard rods that are approximately U-shaped in side view and are fixed to the upper and lower rods of the frame rod, and a plurality of guard rods that are attached to at least one of the left and right rods of the frame rod and the plurality of guard rods, It is equipped with a fixing rod that is U-shaped in plan view and has a base side that is longer than the horizontal dimension, and a left side and a right side that are integrated, and the inner periphery of the hot air outlet is provided at the tip of the left and right sides of the fixing rod. The hot air is characterized in that the locking portions for locking the hot air are bent inward in a U-shape, and the distance between these U-shaped locking portions is larger than the horizontal dimension of the hot air outlet. Protective guard device for heating equipment.