JPH1183021A - Heat sensitive element mounting member of pan bottom temperature sensing cylinder for gas cooking appliance - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a heat sensitive element mounting member for easily automating assembling of a heat sensitive element with a single component by constituting to integrally overhange press bonding pieces for press bonding leads from both sides of a lead fixing part oppositely in a substantially U shape at both sides of a protrusion of a ridge shape in a vertical direction. SOLUTION: This heat sensitive element mounting member 7 of a pan bottom temperature sensing cylinder for a gas cooking appliance comprises leads of the element press bonded by press bonding pieces 7-8 at both vertical sides via a protrusion 7-7 formed in a ridge shape to a lead fixing part 7-6, i.e., at both sides of a centerline of the cylinder in a parallel direction with the centerline. Thus, since the leads are forcibly bent between the two press bonding positions, even when the leads are not convered in multiple with an insulating cylinder, there is no fear of positional deviations of the leads merely by press bonding the leads by a strength not so large as damaging it. Then, management of a thickness after the press bonding may be sufficient, and, management of manufacturing steps is facilitated without necessity of managing the press bonding force.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pot heated by a gas stove, which is attached to a gas stove to detect the temperature of the bottom of the pot, and which is guided by the fixed tube fixed to the stove and the fixed tube. A pot bottom temperature detecting cylinder comprising a sliding cylinder in which the top lid keeps contact with the pan bottom and is slidably resilient in the vertical direction,
The present invention relates to an improvement in a heat-sensitive element mounting member for mounting a heat-sensitive element on a lower surface of the sliding cylinder top cover.

[0002]

2. Description of the Related Art FIG. 10 is a view showing a state in which a thermosensitive element is mounted on a pot bottom temperature detecting cylinder to which the present invention is applied by a conventional thermosensitive element mounting member, and FIG. In the drawing, reference numeral 1 denotes a stove frame, 2 denotes a pan bottom temperature detecting tube, 3 denotes a pot bottom, and the pan bottom temperature detecting tube 2 is a fixed tube 2-1 fixed to the stove frame 1. And a sliding cylinder 2-2 guided by the fixed cylinder 2-1 and slidable in the vertical direction, and 2-3 is a top cover of the sliding cylinder. Numeral 4 is disposed between the fixed cylinder 2-1 and the top lid 2-3 of the sliding cylinder 2-2, and the top lid 2-3 of the sliding cylinder 2-2 always contacts the pan bottom 3. This is a coil spring that urges the sliding cylinder 2-2 upward to keep it. Reference numeral 5 denotes a thermosensitive element such as a thermistor for detecting the temperature of the pot bottom 3 via the top lid 2-3.
Reference numeral 6 denotes a thermistor lead wire, which is connected to a control device (not shown) for shutting off fuel gas supplied to the stove when the temperature of the pot bottom rises to a predetermined temperature.

Next, a first example of the structure of a conventional heat-sensitive element mounting member for mounting a heat-sensitive element on the lower surface of the top cover 2-3 of the sliding cylinder 2-2 of the pot bottom temperature detecting cylinder 2 will be described. Figure 10, Figure
In 11, reference numeral 7 denotes a conventionally mounted thermosensitive element mounting member, which includes a thermosensitive element housing 7-1 that forms, for example, a U-shaped space for housing the thermosensitive element 5, and a thermosensitive element housing 7-7.
1 for holding the cover 1 on the lower surface of the top cover 2-3
The flange 7-2 is attached to the top lid 2-3 by spot welding or the like in close contact therewith. Reference numeral 8 denotes a heat-resistant adhesive such as a ceramic adhesive. The lead wire 6 is fixed to the heat-sensitive element mounting member 7 in order to prevent the heat-sensitive element 5 from falling out of the housing portion 7-1. The adhesive 8 may be adhered to the lower surface of the top lid body. Lead wire 6
Of the pot bottom temperature detecting cylinder 2 outside the housing part 7-1.
Is performed after being bent in a direction parallel to the center line. A filler is filled in the heat-sensitive element accommodating portion 7-1 of the heat-sensitive element mounting member 7 in order to improve the transmission of the pan bottom temperature to the heat-sensitive element 5, and the use of the filler is preferable for good heat transfer. Since it is generally performed, the description is omitted hereafter. Figure 12 shows Figure 1
0, FIG. 11 is a perspective view for facilitating the understanding of the configuration of the heat-sensitive element mounting member 7 shown in FIG.
-2 is a flange.

The above-described heat-sensitive element mounting member 7 shown in FIGS. 10, 11 and 12 has a drawback described later, and a structure for solving the problem is proposed in Japanese Patent Laid-Open No. 5-123248. This is shown in FIGS. 13 and 14 as a second conventional example. FIG. 13 shows only the configuration of the sliding cylinder 2-2 of the pot bottom temperature detecting cylinder 2 around the top lid 2-3. The heat-sensitive element mounting member 7 having the above-described structure includes a top cover 2-2 in addition to the heat-sensitive element housing 7-1 and the flange 7-2.
After the thermal element 5 and the lead wire 6 are inserted into the thermal element mounting member 7 which has been attached to the lower surface of the top 3, the lead wire is pressed and crushed in the direction of arrow 7-3 to crush the lead line 2-2. 3 is formed integrally with a crimping portion 7-4 for crimping. Fig. 14
FIG. 1 is a perspective view showing a configuration of a heat-sensitive element mounting member 7 disclosed in Japanese Patent Application Laid-Open No. 5-123248.

FIG. 15, FIG. 16 and FIG.
FIG. 15 is a cross-sectional view showing the structure proposed as the first embodiment, showing a state after mounting on a pan bottom temperature detecting tube, and FIG. 16 is a perspective view of the above structure. FIG. 17 is a cross-sectional view showing the structure of a second embodiment in Japanese Patent Application No. 9-78842. 15 and 16, reference numerals 2-2, 2-3, 5, 6, 7, 7-1, and 7-2 denote the same as those described above, and reference numeral 7-6 denotes a lead wire 6 of the thermal element 5. A lead wire fixing part for guiding and fixing the pan parallel to the center line of the pan bottom temperature detecting cylinder,
Reference numeral 9 denotes a separate fixing member for holding the lead wire 6 between the lead wire fixing portion 7-6 and the lead wire 6 in the direction of arrow 11 (FIG.
16) It is attached to the lead wire fixing part 7-6 by spot welding while being clamped, or it is attached by bending both sides of the fixing member 9. In order to secure the lead wire, a waveform 10 is formed on both the lead wire fixing portion 7-6 and the fixing member 9.

In the configuration shown in FIG. 17, the thermosensitive element 5 is mounted perpendicularly to the top cover 2-3, that is, in a posture in which the lead wire 6 hangs directly in a direction parallel to the center line of the pot bottom temperature detecting tube 2. The tubular heat-sensitive element accommodating portion 7-1 is divided into two, and a lead wire fixing portion 7-6 in which a waveform 10 is formed in each of the two divided portions is integrally formed. Thermal element storage part 7-1 divided into two
And the two lead wire fixing portions 7-6 respectively accommodate the thermal element 5, and hold the lead wire 6 therebetween, and are joined to each other on both sides.

[0007]

In the structure shown in FIGS. 10, 11 and 12, the lead wire 6 is fixed by the adhesive 8, so that some tension is applied to the lead wire. When acted upon,
There is a problem that the heat-sensitive element 5 may fall off from the heat-sensitive element accommodating section 7-1 due to the peeling of the adhesive, and that the heat treatment after applying the adhesive complicates the manufacturing process.

In the structure disclosed in Japanese Patent Application Laid-Open No. 5-123248 shown in FIGS. 13 and 14, the problem of the structure shown in FIGS. 10, 11 and 12 is solved, but the lead wire is fixed. In the step of crushing the crimping portion 7-4 to be crushed, it is difficult to control the pressure and the amount of crushing. Also, in order to prevent the lead wire 6, and therefore the thermal element 5 from being displaced, the crimping portion 7-4 must be crushed with a sufficient pressure to crimp the lead wire 6. However, it is necessary to use multiple insulating tubes so that the insulation of the lead wire 6 is not destroyed thereby, resulting in an increase in cost. Further, the lead wire 6 has a crimping portion 7-
After crimping in step 4, it is not possible to keep the direction parallel to the center line of the pot bottom temperature detecting tube 2 only by bending. Therefore, when the sliding cylinder 2-2 slides in the vertical direction, the lead wire comes into contact with another component, for example, the coil spring 4, causing a problem that the sliding is hindered.

FIG. 10, FIG. 11, and FIG.
In both the configurations shown in FIGS. 13 and 14, the thermosensitive element mounting member 7 is welded to the top cover 2-3, the thermosensitive element 5 is inserted, and the lead wire 6 is fixed. , Thermal element 5
Insertion work and handling of lead wires are difficult, which makes automation difficult.

Although the configurations shown in FIGS. 15 and 16 and the configuration shown in FIG. 17 have all solved the above-mentioned problems, they still have the disadvantage that the components are composed of two parts, and the cost of parts and the number of assembly steps are increased. ing. SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems and to obtain a heat-sensitive element mounting member which is made of a single component and which makes it easier to automate the mounting of the heat-sensitive element.

[0011]

SUMMARY OF THE INVENTION In order to detect the temperature of the bottom of a pan heated by a gas stove, the stove is attached to the gas stove and fixed to the stove, and the top is guided by the fixed stove. A thermosensitive element in which a thermosensitive element is mounted on the lower surface of the top lid of the sliding cylinder, wherein the lid bottom is in contact with the pan bottom and the sliding cylinder is slidably resilient in the vertical direction while being slidable vertically. An element mounting member, wherein a groove-shaped thermosensitive element accommodating portion for forming a space for accommodating the thermosensitive element in parallel with a lower surface of the lid between the lower surface of the top lid and an upper edge of the accommodating portion; And a flange portion extending along the lower surface of the top cover and fixed to the lower surface in close contact therewith; a lead for guiding and fixing the lead wire of the heat-sensitive element in a direction parallel to the center line of the pot bottom temperature detecting cylinder. The lead wire fixing portion is formed integrally with the lead wire fixing portion; A convex portion having a chevron shape is formed, and the lead wire is connected to the lead wire fixing portion from both sides of the lead wire fixing portion on both sides of the convex portion in the vertical direction. A crimping piece to be crimped is formed to protrude integrally in a substantially U-shape (claim 1), or a groove-like shape is formed across the lead wire fixing portion instead of the chevron-shaped convex portion. A concave portion is formed, and crimping pieces for crimping the lead wire to the lead wire fixing portion from both sides of the lead wire fixing portion on both sides in the vertical direction with the concave portion in a substantially U shape. In order to protrude the lead wire integrally in the recess and forcibly bend the lead wire in the recess, the crimping pieces for crimping the lead wire to the bottom of the recess from both sides of the bottom of the recess are also substantially U-shaped. , And are configured to protrude integrally with each other (claim 2).

[0012]

[Operation and effect] Similar to the heat-sensitive element mounting member proposed in Japanese Patent Application No. 9-78842, the lead wire of the heat-sensitive element is kept parallel to the center line of the pot bottom temperature detecting cylinder, so that the lead wire is provided. Is not in contact with parts such as coil springs and hinders sliding of the sliding cylinder. In addition, since it is composed of a single part, the cost of parts and the number of man-hours for assembling the thermal element are reduced. There is a cost reduction effect.

In the configuration of the first aspect, a mountain-shaped convex portion is provided between the two crimping portions, the groove-shaped concave portion is provided in the second aspect, and the lead wire is provided in the first aspect. Is bent by the projection itself, and in the configuration of claim 2, the lead wire is pressed against the bottom of the recess by a crimping piece protruding substantially in a U-shape from both sides of the bottom of the recess to forcibly. Since it is bent, the crimping strength can be adjusted according to the structure disclosed in JP-A-5-123248 (FIG.
Even if it is not strengthened as in 14), there is no danger that the lead wire will be displaced, so that it is not necessary to control the strength of the crimping force, and the thickness after crimping shown in FIG. Only the management of the manufacturing process is required, and the management of the manufacturing process becomes easy.

As shown in FIGS. 13 and 14, since the lead wire is not strongly crimped as in the structure disclosed in Japanese Patent Application Laid-Open No. 5-123248, an insulating tube for preventing insulation breakdown of the lead wire by crimping. Does not need to be multiplexed on the lead wire, which has a cost reduction effect.

As in the configuration of Japanese Patent Application No. 9-78842, the heat-sensitive element mounting member is mounted on the lower surface of the top lid of the sliding cylinder of the pot bottom temperature detecting cylinder after the heat-sensitive element is assembled. When assembling to the member, the thermal element is inserted into the thermal element housing part of the thermal element mounting member in the open state, and the lead wire protrudes from both sides of the lead wire mounting part with crimping pieces. It is only necessary to insert from the open end of the formed U-shaped part and place it on the lead wire mounting part, and it is easy to automate in combination with the single part.

[0016]

FIG. 1 is a perspective view showing an example of the structure of a heat-sensitive element mounting member according to the present invention, and FIG. 2 is a longitudinal sectional view after the heat-sensitive element is mounted on the heat-sensitive element mounting member. FIG. 3 is a view showing a state after the heat-sensitive element is mounted on the heat-sensitive element mounting member and then welded to the lower surface of the top lid of the sliding cylinder by spot welding or the like. It is an arrow view.

In FIG. 1, reference numeral 7 denotes a thermosensitive element mounting member,
7-1 is a heat-sensitive element housing portion formed in a groove shape of the heat-sensitive element mounting member 7, 7-2 is extended from the upper edge of the heat-sensitive element housing portion 7-1 along the lower surface of the top cover, and A flange portion 7-6 is tightly fixed to the lower surface. Reference numeral 7-6 denotes a lead wire fixing portion for guiding and fixing the lead wire of the thermosensitive element in a direction parallel to the center line of the pot bottom temperature detecting cylinder. The portion 7-6 is formed by bending a mountain-shaped convex portion 7-7 across the portion. The lead wire fixing portion is formed on both sides of the convex portion 7-7 in the vertical direction with the convex portion 7-7 interposed therebetween. From both sides of 7-6, crimping pieces 7-8 for crimping the lead wire 6 to the lead wire fixing portion 7-6 are formed in a substantially U-shape so as to be integrally formed. Have been.

In FIG. 2, 5 is a thermosensitive element, 6 is a lead wire, 6-1 is an insulating tube over the crimped portion of the lead wire, and other symbols are as described above. . When assembling the heat-sensitive element 5 to the heat-sensitive element mounting member 7, first, the heat-sensitive element 5 is placed in the heat-sensitive element accommodating portion 7-1, the lead wire 6 is bent, and the space between the opposing crimping pieces 7-8 is formed. And put it on the lead wire fixing part 7-6.
Is bent inwardly into a U-shape to insulate the lead wire 6
Crimp through 6-1. Reference numeral 7-8 shown in FIG.
7-8 shows a state where the lead wire is crimped by bending. The thermal element 5 is housed in the thermal element housing 7-1 in a direction parallel to the lower surface of the top lid of the sliding cylinder.

In FIG. 3, reference numeral 2-3 denotes a top cover of the sliding cylinder 2-2 of the pan bottom temperature detecting cylinder 2, and other reference numerals are as described above. The two lead wires 6 of the thermal element 5 are covered with an insulating tube 6-1 and individually crimped by a pair of crimping pieces 7-8.

FIG. 4 is a perspective view showing another example of the structure of the first embodiment, FIG. 5 is a longitudinal sectional view after the heat-sensitive element 5 is assembled to the heat-sensitive element mounting member 7 having the structure of FIG. 4, and FIG. 4 shows a state after the heat-sensitive element 5 is attached to the heat-sensitive element mounting member 7 having the configuration shown in FIG. 4 and the heat-sensitive element mounting member 7 is welded to the lower surface of the top lid 2-3 of the sliding cylinder by spot welding or the like. In the figure, the heat-sensitive element mounting member 7 is a view taken in the direction of arrow A in FIG. 5, and the same reference numerals in FIGS. 4, 5, and 6 as those in FIGS. 2 and 3 show the same parts.

In the configuration shown in FIGS. 1, 2 and 3, the opposing crimping pieces 7-8 press each of a pair of lead wires separately, while FIGS. 6, each of the opposing crimping pieces 7-8 is configured to crimp a pair of lead wires together without overlapping each other, and one of the opposing crimping pieces 7-8 has an upper side. The piece 7-8-1 is the lower piece on the other
7-8-2 is formed on the hypotenuse.

FIG. 7 is a view taken in the direction of arrow B in FIG. A in FIG.
The dimension indicated by indicates the thickness after crimping, and if the dimension a is controlled during crimping, the configuration shown in FIGS. 1, 2 and 3 or the configuration shown in FIGS. -The wire 6 can be crimped without the risk of displacement due to external force.

FIG. 8 is a sectional view of the heat-sensitive element mounting member 7 according to the second aspect, and FIG. 9 is a view taken in the direction of arrow C in FIG. In both figures,
The lead wire fixing portion 7-6 is formed by bending a groove-shaped concave portion 7-9 across the portion. The lead wire fixing portion 7-6 is fixed on both sides of the concave portion 7-9 in the vertical direction. A crimping piece 7-8 for crimping the lead wire 6 to the lead wire fixing portion 7-6 from both sides of the portion 7-6.
Are protruded in a substantially U-shape relative to each other and are integrally formed. In the configuration in which the concave portion 7-9 is formed, the lead wire 6 is also forced from the bottom side of the concave portion 7-9 in order to forcibly bend the lead wire 6 along the concave portion. Recess 7-9
The crimping pieces 7-10 to be crimped on the bottom surface of the are protruded in a substantially U-shape to be integrally formed. The other reference numerals in the figure are as described above, and the mounting procedure of the thermosensitive element 5 is the same as that of the first aspect.

The thermosensitive element mounting member 7 of the present invention for a gas stove bottom detecting tube has a lead wire 6 of the thermosensitive element 5 and a lead wire 6.
The crimping piece 7-8 is crimped on the vertical fixing portion 7-6 on both sides in the vertical direction, that is, on both sides in the direction parallel to the center line of the pot bottom temperature detecting cylinder 2 with the convex portion 7-7 formed in a mountain shape, or Groove-shaped recess
The crimping piece 7-8 is crimped on both sides in the vertical direction, that is, on both sides in the direction parallel to the center line of the pan bottom temperature detecting cylinder 2 with the lead wire 7-9 therebetween, and the lead wire is crimped on the bottom of the recess 7-9. 10 and crimped between two crimping locations.
Since the lead wire is bent, an insulation tube 6-1 is attached to the lead wire 6.
Even if the lead wire 6 is not overlaid, only the crimping is performed with such a strength that the insulation of the lead wire 6 is not destroyed, there is no possibility that the lead wire 6 is displaced, and the thickness after crimping (see FIG. 7) It is sufficient to manage the thickness (thickness indicated by the dimension a), and it is not necessary to control the crimping force.

The heat-sensitive element mounting member 7 of the present invention is advantageous in terms of cost because it is not necessary to cover the lead wire 6 with the insulating tube 6-1 in a multiplex manner, and is made of a single component. Therefore, it is more cost-effective than the configuration proposed in Japanese Patent Application No. 9-78842.

The heat-sensitive element mounting member 7 of the present invention is disclosed in Japanese Patent Application No. 9-78.
Similar to the configuration proposed in No. 842, the sliding cylinder 2-
Since the thermal element 5 and its lead wire 6 are attached to the top lid 2-3 before mounting, the thermal element 5 is attached to the thermal element receiving section 7-1.
, And the lead wire 6 can be easily placed at the crimping position, and automation can be easily performed in addition to the fact that the lead wire 6 is formed of a single part.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one example of the configuration of claim 1 of the present invention.

FIG. 2 is a longitudinal sectional view after the thermal element is assembled to the thermal element mounting member having the configuration of FIG. 1;

FIG. 3 is a view taken in the direction of arrow A in FIG. 2 and shows a state in which a heat-sensitive element mounting member is mounted on a lower surface of a top lid of a sliding cylinder.

FIG. 4 is a perspective view showing another example of the configuration of claim 1 of the present invention.

FIG. 5 is a longitudinal sectional view after the thermal element is mounted on the thermal element mounting member having the configuration of FIG. 4;

6 is a view taken in the direction of arrow A in FIG. 5 and shows a state in which the heat-sensitive element mounting member is mounted on the lower surface of the top lid of the sliding cylinder.

FIG. 7 is a view taken in the direction of arrow B in FIG. 2;

FIG. 8 is a sectional view showing a configuration according to a second embodiment of the present invention.

9 is a view as viewed in the direction indicated by the arrow C in FIG. 8;

FIG. 10 is a view showing a state in which a thermosensitive element is attached to a pan bottom temperature detecting cylinder by a conventional thermosensitive element attaching member.

FIG. 11 is a sectional view taken along the line DD in FIG. 10;

FIG. 12 is a perspective view of the heat-sensitive element mounting member shown in FIGS. 10 and 11;

FIG. 13: Japanese Patent Laid-Open No. 5-1232 attached to a pan bottom temperature detection tube
FIG. 48 is a side view of the heat-sensitive element mounting member disclosed in No. 48.

FIG. 14 is a perspective view of a heat-sensitive element mounting member disclosed in Japanese Patent Laid-Open No. 5-123248.

FIG. 15 is a cross-sectional view showing the configuration of a heat-sensitive element mounting member as a first embodiment disclosed in Japanese Patent Application No. 9-78842.

FIG. 16 is a perspective view of the heat-sensitive element mounting member shown in FIG.

FIG. 17 is a cross-sectional view showing a configuration of a heat-sensitive element mounting member disclosed as a second embodiment in Japanese Patent Application No. 9-78842.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Gas stove frame 2 Pot bottom temperature detecting tube 2-1 Fixed tube 2-2 Sliding tube 2-3 Top cover of sliding tube 3 Pot bottom 4 Coil spring 5 Thermal element 6 Lead wire 6-1 Insulation Tube 7 Thermal element mounting member 7-1 Thermal element accommodation section 7-2 Flange section 7-6 Lead wire fixing section 7-7 Angled convex section 7-8 Crimp piece 7-9 Groove shaped concave section 7- 10 crimping pieces

Claims (2)

[Claims] 1. A pot bottom of a pot heated by a gas stove (3)
A fixed cylinder (2-1) attached to a gas stove for detecting the temperature of the gas and fixed to the gas stove, and the fixed cylinder (2-1)
The top lid (2-3) is kept in contact with the pot bottom (3) and is elastically slidable in the vertical direction.
2) A thermosensitive element mounting member (7) for mounting the thermosensitive element (5) on the lower surface of the top lid (2-3) of the sliding cylinder (2-2) of the pot bottom temperature detecting cylinder (2) comprising: And a groove-shaped heat-sensitive element that forms a space between the lower surface of the top lid (2-3) and the heat-sensitive element (5) in parallel with the lower surface of the lid (2-3). An accommodating portion (7-1); a flange portion (7-) extending from the upper edge of the accommodating portion (7-1) along the lower surface of the top lid (2-3) and being tightly fixed to the lower surface.
A lead wire fixing portion (7-6) for guiding and fixing a lead wire (6) of the thermosensitive element (5) in a direction parallel to a center line of the pan bottom temperature detecting cylinder (2); Are formed integrally with each other, a mountain-shaped convex portion (7-7) is formed across the lead wire fixing portion (7-6), and the convex portion (7-7) is formed.
The lead wire fixing portions (7)
-6) From both sides, crimping pieces (7-8) for crimping the lead wire (6) to the lead wire fixing portion (7-6) are integrally formed in a substantially U-shape. A heat-sensitive element mounting member for a pot bottom temperature detection tube of a gas stove that overhangs. 2. The chevron-shaped projection according to claim 1, wherein
Instead, a groove-shaped recess (7-9) is formed across the lead wire fixing portion (7-6), and the recess (7-9) is sandwiched between both sides of the recess in the vertical direction. A lead wire (6) from both sides of the lead wire fixing part (7-6) to the lead wire fixing part (7-6);
The crimping piece (7-8) for crimping the wire is extended in a substantially U-shape, and the lead wire (6) is forcibly bent at the recess (7-9). A pot bottom temperature detecting tube of a gas stove comprising crimping pieces (7-10) for crimping a lead wire (6) to the bottom surface of the concave portion and protruding integrally from both sides of the bottom. Thermal element mounting member.