JP2005030711A - Heater end fixing device for electric heater - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent damage to and play of ends of a glass pipe while fixedly supporting a rod-shaped heater with sufficient holding force, and facilitate the assembly thereof. <P>SOLUTION: In an electric heater, a case is provided with support plates in an upper and a lower part, and ends of the rod-shaped heater 6 with a heater coil sealed in the glass pipe are passed through the support plates whereon they are fixedly supported with fittings 13 and elastic wires 22. The rod-shaped heater is fitted in a notch 16 of the fitting, and both ends of the elastic wire are engaged in respective locking portions 20 formed on the fitting, so that the elasticity of the elastic wire fixedly supports the end of the rod-shaped heater. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an end fixing device for a rod heater in which a heater coil is enclosed in a glass pipe.

A so-called halogen heater is a so-called halogen heater, in which a heater coil and an inert gas are sealed in a glass pipe and both ends are fused and sealed. Because of the use of energy, heat can be handled freely, the size of the installed main body can be made compact and compact, and the heat source is a filament with a small heat capacity, so the rise and fall of heat energy is fast, and the halogen cycle works It has a long life and many features. (For example, see Patent Document 1)
This rod heater is fixed in the vertical (vertical) direction or in the horizontal direction according to the shape of the electric stove body, and both ends are fixed to a metal mounting plate using metal fittings or insulators. ing.
Japanese Patent Laying-Open No. 2003-7437 (FIG. 1)

  However, glass pipes are easily damaged due to their properties. For example, when fastening a seat plate or the like using screws, there is a drawback that the glass pipe is damaged if the fastening force is strong. If the tightening force is weakened to prevent breakage, the heater coil cannot be sufficiently fixed, causing a large backlash in the heater coil, shortening the service life and causing vibration, which eventually causes damage to the glass pipe. It has become.

  In the present invention, the rod-shaped heater is fixed with a sufficient holding force, and the glass pipe is prevented from being damaged.

  The present invention includes a box-shaped case, a support plate provided in the upper and lower portions of the case, a rod heater in which a heater coil is sealed in a glass pipe that is fixed in a vertical direction through the end of the support plate, A fixing bracket that supports the end of the rod-shaped heater, and the fixing bracket includes a cutout portion that houses the end of the rod-shaped heater and at least two locking portions, and is locked to the locking portion. An elastic linear body is provided, and both ends of the elastic linear body are engaged with the respective engaging parts in a state where the end of the rod-shaped heater is housed in the notch, and the end of the rod-shaped heater is caused by the elasticity of the elastic linear body. It is something to support.

  Further, the notch portion is formed by integrally forming a bent piece at the end edge on the back side opposite to the opening portion in a planar shape.

  The rod-shaped heater has an end portion insulated by an insulator, and a protrusion interposed between at least a pair of side strip walls provided on opposite side walls of the glass pipe is provided at an opposite end edge of the notch portion. The piece is bent and integrally formed.

  Furthermore, the elastic linear body presses and supports the side wall of the glass pipe.

  The present invention has a rod-shaped heater made of a glass pipe, a notch portion for housing the end portion of the rod-shaped heater, a fixing bracket provided with two locking portions, and an elastic linear body locked to the locking portion. Since the end portion of the rod-shaped heater is elastically supported by the elastic linear body, the glass pipe is prevented from being damaged such that the end portion of the rod-shaped heater is screwed by the seat plate. In particular, the elasticity of the elastic linear body is moderately good, the end of the glass pipe can be pressed, and it can withstand vibrations and impacts with a cushioning action.

  In addition, the notch part of the fixing bracket has a substantially square shape that smoothly fits the end of the bar heater, and a bent piece is provided at the end of the back side, so the end of the bar heater hits the bent piece. Unlike sharp edges, there is no damage to the glass pipe and damage to the ends is prevented.

  And since the rod-shaped heater has an end portion insulated by an insulator and a protruding piece provided on the edge of the notch portion is interposed between the side strips of the side wall of the glass pipe. The rod-shaped heater can be held at a fixed position by preventing rotation of the heater.

  Further, since the elastic striated body supports the side wall of the glass pipe by pressing, the side slab wall has a thickness and sufficient strength so that even if the elastic striated body is elastically contacted with the glass, The pipe will not be damaged. In other words, the side wall acts as a detent effect of the rod heater and as an elastic part of the elastic linear body.

  Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an enlarged perspective view of an essential part of an end fixing device for an electric stove according to the present invention, FIG. 2 is an overall side sectional view, FIG. 3 is a partial perspective view, and FIG.

  (1) is a vertically long box-shaped case, (2) and (3) are support plates fixed horizontally in the upper and lower portions of the case and each has an insertion hole (4), (5) A reflective plate interposed between the support plates (2) and (3) and having a horizontal cross-sectional shape, and (6) is a fixing metal fitting and elastic wire which will be described later by inserting both upper and lower ends into the insertion hole (4). A rod-shaped heater supported and fixed by a body, which is arranged in a vertical (vertical) direction and is not shown in detail, but a horizontal cross-sectional glass pipe (7), and a heater coil enclosed in the pipe, And insulators (8) and (9) for insulating the upper and lower ends.

  The upper and lower ends of the glass pipe (7) are integrally formed with a pair of side walls (10) and (10) extending in parallel in the vertical direction on opposite side walls as shown in FIGS. The upper part of the side strip wall is fitted into the recesses (11) and (11) of the insulators (8) and (9) and fixed by adhesion. (12) and (12) are lead wires derived from the insulator.

  (13) and (14) are saddle-shaped fixings in which the boats (15), (15),... Of the support plate are bent and fixed to the upper surface of the upper support plate (2) and the lower surface of the lower support plate (14). As shown in FIG. 4, a bent piece (18) obtained by bending upward the edge on the back side opposite to the opening (17) of the notch with a metal fitting as shown in FIG. And a pair of projecting pieces (19), (19) and a pair of engaging parts bent upward across the notch (16). (20) and (20) are integrally formed.

  The locking portion is provided with locking grooves (21) and (21) each opening in the same direction. (22) is an arcuate elastic linear body that is locked to the locking grooves (21) and (21), and has both ends bent in different directions to form a detachment prevention structure.

  (23) is a wire guard attached to the front side of the rod heater (6) and the reflector (5), and (24) is a stand attached to the lower part of the case (1).

  Next, the fixing order of the rod heater (6) will be described. First, the lower end of the bar heater (6) is inserted into the insertion hole of the lower support plate (14), and the end is fixed by the lower fixing bracket (14) and the elastic wire. This specific fixing order is the same as the fixing of the upper end, and will be described next.

  The upper end of the rod heater (6) is inserted into the insertion hole (4) of the upper support plate (2), and the end is fitted into the notch (16) of the fixing bracket (13). When the wall (10) is brought into contact with the bent piece (18), the protruding pieces (19) and (19) are automatically interposed between the side wall walls (10) and (10).

  Then, one end of the elastic linear body (22) is hooked on the locking groove (21) of one locking part (20), and the elastic linear line is applied while the middle part is applied to the other protruding wall (10). The body is deformed and the other end is hooked in the locking groove (21) of the other locking portion (20).

  At this time, the entire glass pipe (7) is pushed to the back side of the notch (16) of the fixing brackets (2) and (3) and comes into contact with the bent piece (18) to be stationary, and the protruding piece (19). The end of (19) faces the end face of the insulator (8), (9), and the downward movement of the rod heater (6) is the same as that of the insulator (8) at the upper end of the rod heater (6). The upward movement of the bar heater (6) is caused by contact with the protruding pieces (19) and (19) of the upper fixing bracket (13) with the lever (9) at the lower end of the bar heater (6). It is regulated by the contact of the protruding piece of the lower fixing bracket (14).

  In the embodiment of the present invention, the shape of the notch is U-shaped, but it may be trapezoidal or square.

It is a principal part expansion external appearance perspective view of the edge part fixing device of the electric stove of this invention. It is the whole side sectional drawing. It is a partial perspective view similarly. It is a principal part exploded perspective view similarly.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Case 2 Support plate 3 Support plate 4 Insertion hole 6 Rod heater 7 Glass pipe 8 Insulator 9 Insulator 10 Side strip 13 Fixing bracket 14 Fixing bracket 16 Notch portion 17 Opening portion 18 Bending piece 19 Projection piece 20 Locking portion 22 Elasticity Striatum

Claims (4)

A box-shaped case, a support plate provided in the upper and lower portions of the case, a bar heater in which a heater coil is enclosed in a glass pipe that is fixed in the vertical direction through the end of the support plate, and the bar heater And an elastic linear body that is provided with a notch portion that houses the end portion of the rod-shaped heater and at least two locking portions, and that is locked to the locking portion. The ends of the rod heater are accommodated in the notches, and both ends of the elastic wire are locked to the respective locking portions, and the ends of the rod heater are supported by the elasticity of the elastic wire. A heater end fixing device for an electric stove. The end portion of the electric stove according to claim 1, wherein the cutout portion has a substantially square shape in plan view, and a bent piece is integrally formed on an end edge on the back side opposite to the opening portion. Fixing device. The rod-shaped heater has an end portion insulated by an insulator, and a projecting piece interposed between at least a pair of side strip walls provided on opposite side walls of the glass pipe is formed on an opposite end edge of the notch portion. 2. The electric stove end fixing device according to claim 1, wherein the electric stove end fixing device is integrally formed by bending. 3. The electric stove end fixing device according to claim 2, wherein the elastic linear body presses and supports the side wall of the glass pipe.

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