JP2014055677A - Attachment structure of case insertion component - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an attachment structure that attaches an electric component to a predetermined position without complicated processing to the electric component and a holder.SOLUTION: In an attachment structure, one side of an electric component 4 having a bending part is inserted into a case 5, another side thereof contacts with a groove part 1a of a first member 1, and the groove part 1a is covered with a second member 2. Consequently, since, with respect to the electric component 4, the position displacement of the groove part 1a is regulated in a lateral direction, the position displacement of an insertion hole 5b of the case 5 is regulated in a vertical direction and the position displacement of the second member 2 is regulated in a front-back direction, the electric component 4 can be fixed to the case 5 with such an extremely simple constitution that the electric component 4 subjected to bending processing is passed through the groove part 1a of the first member 1 and the second member 2 is attached from above.

Description

  The present invention relates to a mounting structure for electrical parts such as a thermocouple and an ignition device, and more particularly to a mounting structure for a case insertion part that is attached in a form in which one end is inserted into a case.

  Conventionally, for example, an attachment device as shown in Patent Document 1 has been considered as a method for attaching an electrical component such as a spark plug or a thermocouple to a combustion device. According to this document, a U-shaped recess is provided in the holder, and the body part of the electrical component and the slit groove provided in the body part are gripped by this recess.

  Note that if the width of the recess is larger than the width of the slit groove, the position of the electrical component tends to fluctuate up and down. In order to affect the performance of the combustion apparatus when the position of the electrical component is shifted, a step is provided in the recess, and this step is brought into contact with the slit groove of the electrical component to suppress vertical fluctuation.

JP-A-8-135965

  However, in the above-described configuration, the dimension of the slit groove and the dimension of the stepped part must be matched, so that dimensional accuracy is required. In addition, the electrical component needs to be processed such as providing a slit groove, resulting in a custom-made component. Therefore, if the shape of the holder is changed, there is a problem that the shape of the electrical component has to be changed and the cost of the component increases because it cannot be easily processed.

  Furthermore, among electrical components, those that are filled with an insulating material may cause defects such as defective insulation due to groove processing.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an attachment structure for attaching an electrical component to a predetermined position without subjecting the electrical component and the holder to complicated processing.

  The present invention is a case insertion part mounting structure including a case having an insertion hole and an electrical part attached to the case in a state where one end is inserted into the insertion hole, and has a groove portion and is attached to the case. The first member and a second member fixed to the first member so as to cover at least a part of the groove, and the electrical component has a bent portion in at least one place, and one side is the side The case insertion component mounting structure is characterized in that it is inserted into the case and the other side abuts against the groove.

  The case insertion component mounting structure according to claim 1, wherein the first member has a flat surface on which the groove is formed.

  The first member includes a plurality of surfaces, and at least two of the sides or a surface different from a plane on which the groove is formed are in contact with the case. It is an attachment structure of the case insertion component of description.

  3. The case insertion part mounting structure according to claim 2, wherein the first member has a cylindrical surface extending from a plane on which the groove is formed.

  5. The case insertion component mounting structure according to claim 3, wherein the first member has a screw hole for mounting the second member on a plane on which the groove is formed.

  6. The case insertion component mounting structure according to claim 5, wherein the electrical component is a component in which an insulating material is filled in a sheath.

  Further, a cylindrical holding tube having one end communicating with the insertion hole and the other end closed is provided inside the case, and one side of the electric component is inserted into the holding tube. Item 6. A case insertion part mounting structure according to Item 6.

  With the configuration described above, it is possible to securely attach the electrical component to the case with an extremely simple structure.

It is an exploded view of the attachment structure in Example 1. FIG. It is a figure which shows the state which attached the electrical component in the case in Example 1. FIG. It is a figure which shows the shape of a 1st member. It is a figure which shows the modification of a 1st member. It is an exploded view of the attachment structure in Example 2. FIG. In Example 3, it is an exploded view of the attachment structure. It is a figure which shows the shape of the 1st member in Example 4. FIG. It is an exploded view of the attachment structure in Example 5. In Example 5, it is sectional drawing which shows the state which attached the electrical component to the case.

  Embodiments of the present invention that are considered to be suitable will be briefly described by showing the effects of the present invention.

  The present invention relates to a mounting structure for an electrical component, wherein the electrical component is subjected to bending processing, one side is inserted into the case, and the other side is brought into contact with the groove of the first member. A member was used to cover the groove.

  As a result, the groove part, the insertion hole of the case, and the second member restrict the positional displacement in the left-right direction, the up-down direction, and the front-rear direction, respectively, so that the bent electric part is passed through the groove part of the first member. The electrical component can be fixed to the case with a very simple configuration in which the second member is attached from above.

  Moreover, since the second member can cover the groove portion with the surface by forming the groove portion on a flat surface, the electric component can be reliably fixed.

  In addition, since the first member is configured so that at least two of the sides or the surface different from the surface on which the groove portion is formed are in contact with the case, a sufficient space for arranging the member for fixing the second member. Is secured, and deformation of the first member can be suppressed.

  In addition, since the first member has a cylindrical surface extending from the plane on which the groove is formed, a sufficient space for arranging a member for fixing the second member is secured. Also, deformation of the first member can be suppressed.

  Moreover, since it comprised so that the 2nd member might be screwed to the same plane as a groove part, the shape of a 2nd member can be made into flat form, and since a process of bending etc. is not required, it can shape | mold easily. .

  In addition, since electrical parts are bent only and do not require processing such as grooves or drawing, defects such as insulation defects can occur even if the sheath is filled with an insulating material, such as sheathed thermocouples or sheathed heaters. Can be easily processed without causing

  Further, by providing a holding tube into which the electrical component is inserted in the case so as to communicate with the insertion hole, the inside and the outside of the case are separated from each other. It becomes possible to insert an electrical component from the outside.

  An embodiment of the present invention will be described below with reference to the drawings.

  The present invention is an attachment structure for attaching an electrical component with one end inserted into a case, but the case here refers not only to a box-like object, but also includes various shapes. . For example, if the object to which the electrical component is attached is a combustion device, the exterior of the combustion device, the internal components such as the burner and the combustion chamber, and the like are also cases.

  FIG. 1 is an exploded view of the mounting structure, and FIG. 2 is a diagram showing a state in which the electrical component 4 is mounted on the case 5. The electrical component 4 is attached to the case 5 using the first member 1, the second member 2, and the screw 3 for fixing the second member 2 to the first member 1. An insertion hole 5b into which one end of the electrical component 4 is inserted is formed in 5a.

  The electrical component 4 is an elongated rod-shaped component such as a thermocouple, an ignition device, or a heater, and has a bent portion 4a that is bent at least at one place, and one of the sides divided by the bent portion 4a. The side 4b is disposed in the case 5 from the insertion hole 5b, and the other side 4c is disposed outside the case 5. The bent portion 4a may be formed by bending a single rod-shaped member as described above, or may be formed by joining two members at a predetermined angle by welding or the like.

  3A and 3B are views for explaining the shape of the first member 1, wherein FIG. 3A is a plan view and FIG. 3B is a side view. The first member 1 is formed by bending a plate-like member, and is formed by bending a flat plate portion 1c in which a groove portion 1a and a screw hole 1b are formed, and bending both ends of the flat plate portion 1c. It has the flange part 1e formed by bending the installation part 1d and the edge part of the standing part 1d in parallel with the attachment surface 5a. The first member 1 is attached to the case 5 by welding the flange portion 1e to the attachment surface 5a, and the flat plate portion 1c is provided in a state separated from the attachment surface 5a by the height of the standing portion 1d.

  In addition, the 1st member 1 is good also as a shape which does not provide the flange part 1e, and in that case, the edge part of the standing part 1d is welded to the attachment surface 5a.

  Moreover, the shape of the 1st member 1 should just be provided in the state in which the flat plate part 1c was separated from the attachment surface 5a, for example, the height of the two standing parts 1d may not be the same, The bending angle of the flat plate portion 1c and the standing portion 1d may not be a right angle. In any case, since the first member 1 is welded to the case 5 at least at two places (two surfaces or two sides), deformation of the first member 1 can be suppressed.

  Furthermore, the 1st member 1 can also be shape | molded like FIG. 4, and the groove part 1a in this case is formed in the flat plate part 1c as a concave hollow.

  The groove portion 1a accommodates a part of the side 4c of the electric component 4 when the electric component 4 is attached, and the flat plate portion 1c has a depth equal to or slightly larger than the diameter of the electric component 4. Is formed.

  The second member 2 is a disk-shaped plate member having a hole 2a through which the screw 3 passes in the center. The second member 2 is brought into contact with the flat plate portion 1c in accordance with the screw hole 1b of the first member 1, and the screw 3 Is attached to the first member 1. The second member 2 only needs to have a shape that covers at least a part of the groove 1a when attached to the first member 1, and may be an ellipse or a rectangle other than a disk. Alternatively, the second member 2 may be formed by integrally forming the screw 3 and the disk-shaped plate material.

  In such a configuration, when the electrical component 4 is attached to the case 5, the first member 1 is welded to the attachment surface 5a of the case 5 in advance, and one side 4b of the electrical component 4 is inserted into the insertion hole 5b. The other side 4 c is brought into contact with the groove 1 a of the first member 1. At this time, the positional deviation of the electrical component 4 in the left-right direction is regulated by the groove 1a, and the positional deviation in the vertical direction is regulated by the insertion hole 5b.

  Next, the second member 2 is placed on the flat plate portion 1c of the first member 1 so that the central hole 2a matches the screw hole 1b of the first member 1, and the first member 1 and the second member 2 are connected with the screw 3. Fix it. Since the second member 2 has a shape that covers the groove 1 a, the electrical component 4 fitted in the groove 1 a is restricted from being displaced in the front-rear direction by attaching the second member 2, and is fixed to the case 5. The

  Since the screw hole 1b for attaching the second member 2 is formed on the same plane as the plane on which the groove 1a is formed, the electrical component 4 passed through the groove 1a by attaching the flat plate-like second member 2 is provided. Can be fixed. That is, since the second member 2 does not require a process such as bending, dimensional management is facilitated and the second member 2 can be easily formed. Further, since the flat plate portion 1c is provided in a state separated from the mounting surface 5a by the standing portion 1d, a sufficient space for securing the screw 3 for fixing the second member 2 is secured. Therefore, it is not necessary to form a hole through which the screw 3 passes in the case 5.

  Furthermore, since the electrical component 4 has only to be a long and narrow bar and bends at least at one place, complicated processing is not necessary. Therefore, even if the electrical component 4 is not specially designed, a general-purpose component can be used and processing can be easily performed, so that the component cost can be suppressed.

  In particular, in the case where the electrical component 4 is a component configured by inserting an electrical element into a metal pipe called a sheath and filling it with an insulating material such as magnesium oxide, such as a sheath thermocouple or a sheathed heater, Forming a groove or throttle in the sheath or performing welding such as brazing not only increases the processing cost but also may cause defects such as insulation failure. However, according to the present invention, it is only necessary to bend without performing complicated processing, so that an insulation failure does not occur. In addition, since the allowable bending angle is prescribed | regulated for such an electrical component 4, bending is performed within this allowable range.

  The angle of the flat plate portion 1 c of the first member 1 (the angle with respect to the case 5) corresponds to the bending angle of the electrical component 4. For example, if the angle formed by the two sides 4b and 4c of the electrical component 4 is 90 °, the flat plate portion 1c is parallel to the case 5 as shown in FIG. 1, but if the angle is 90 ° or more, the flat plate portion 1c is the case. 5 is formed obliquely.

  FIG. 5 shows the mounting structure of the electrical component 4 in the second embodiment of the present invention. Here, differences from the first embodiment will be described.

  The first member 1 is formed by bending a plate-like member in the same manner as in the first embodiment (FIG. 4), and is formed by bending the flat plate portion 1c and both ends of the flat plate portion 1c. Although it has the flange part 1e formed by bending the installation part 1d and the edge part of the standing part 1d, Example 1 is a point by which the groove part 1a and the screw hole 1b are formed in the standing part 1d. Is different. The first member 1 is attached to the case 5 by welding the flange portion 1e to the attachment surface 5a.

  Since the screw hole 1b for attaching the second member 2 is formed on the same plane as the plane on which the groove 1a is formed, the electric component 4 passed through the groove 1a by attaching the flat plate-like second member 2 is provided. Can be fixed. Further, as described above, even when the groove 1a and the screw hole 1b are formed in the standing portion 1d, a space for stopping the screw 3 for fixing the second member 2 can be secured.

  FIG. 6 shows the mounting structure of the electrical component 4 in the third embodiment of the present invention. Here, differences from the first embodiment will be described.

  The first member 1 is formed by bending a plate-like member stepwise, and has a flat plate portion 1c in which a groove portion 1a and a screw hole 1b are formed. From one end of the flat plate portion 1c, The standing portion 1d is bent, and the end portion of the standing portion 1d is bent to form a flange portion 1e. Further, a flange portion 1f is bent at the other end of the flat plate portion 1c (the side opposite to the end portion where the standing portion 1d is formed).

  The case 5 has a first mounting surface 5c having an insertion hole 5b into which one end of the electrical component 4 is inserted, and a second mounting surface 5d having a predetermined angle with the first mounting surface 5c, and the first member 1 is attached to the case 5 by welding the flange portion 1e to the first attachment surface 5c and welding the flange portion 1f to the second attachment surface 5d.

  In addition, the 1st member 1 is good also as a shape which does not provide the flange parts 1e and 1f. In that case, the edge part of the standing part 1d is welded to the 1st attachment surface 5c, and the edge part of the flat plate part 1c is 2nd. It is welded to the mounting surface 5d.

  Thus, when the surface to which the first member 1 of the case 5 is attached is uneven, a space for stopping the screw 3 for fixing the second member 2 can be secured using the unevenness of the case 5. .

  FIG. 7 shows the first member 1 in Embodiment 4 of the present invention. Here, differences from the first embodiment will be described.

  The first member 1 is formed by pressing a disk-shaped plate material, and includes a circular flat plate portion 1c in which a groove portion 1a and a screw hole 1b are formed, and a standing portion extending in a cylindrical shape from the flat plate portion 1c. 1d and a flange portion 1e formed by bending an end portion of the standing portion 1d. The first member 1 is attached to the case 5 by welding the flange portion 1e to the attachment surface 5a, and the flat plate portion 1c is provided in a state separated from the attachment surface 5a by the height of the standing portion 1d.

  In addition, the 1st member 1 is good also as a shape which does not provide the flange part 1e, and in that case, the edge part of the standing part 1d is welded to the attachment surface 5a.

  Further, the flat plate portion 1c is not limited to a circular shape, and may be various shapes such as an ellipse and a rectangle.

  Since the screw hole 1b for attaching the second member 2 is formed on the same plane as the plane on which the groove 1a is formed, the electric component 4 passed through the groove 1a by attaching the flat plate-like second member 2 is provided. Can be fixed. Further, since the flat plate portion 1c is provided in a state separated from the mounting surface 5a by the standing portion 1d, a space for stopping the screw 3 for fixing the second member 2 can be secured.

  Next, a fifth embodiment of the present invention will be described with reference to FIGS. Here, differences from the first embodiment will be described.

  FIG. 5 is an exploded view showing the mounting structure of the second embodiment. The case 5 has a substantially box shape with the outer shell closed, and the case 5 has a holding tube 6 made of a thin cylindrical member. Is provided.

  As shown in FIG. 6, one end of the holding tube 6 communicates with the insertion hole 5b of the case 5 and is joined to the mounting surface 5a by welding or the like, and the other end has a closed shape. Then, one side 4 b of the electrical component 4 is inserted into the holding tube 6.

  By providing such a holding tube 6 in the case 5, the inside and outside of the case 5 are completely separated from each other even if the insertion hole 5 b is provided in the case 5. Therefore, for example, when it is necessary to keep the inside of the case 5 in an airtight state as in a gas purification device, it is possible to insert the electrical component 4 from the outside of the case 5 while ensuring the airtightness in the case 5. Become. Moreover, since the positional shift of the electrical component 4 is suppressed by the holding tube 6, the electrical component 4 can be attached to a more reliably determined position.

DESCRIPTION OF SYMBOLS 1 1st member 1a Groove part 1b Screw hole 2 2nd member 4 Electrical component 5 Case 5b Insertion hole 6 Holding tube

Claims (7)

  A case insertion part mounting structure comprising a case having an insertion hole and an electrical part attached to the case with one end inserted into the insertion hole, the first structure having a groove and being attached to the case A member and a second member fixed to the first member so as to cover at least a part of the groove, and the electric component has a bent portion at least at one place and one side is inserted into the case And a case insertion part mounting structure, wherein the other side is in contact with the groove.   The case insertion component mounting structure according to claim 1, wherein the first member has a flat surface on which the groove is formed.   3. The first member according to claim 2, wherein the first member is composed of a plurality of surfaces, and at least two of the sides or a surface different from a plane on which the groove portion is formed are in contact with the case. Mounting structure for case insertion parts.   The case insertion component mounting structure according to claim 2, wherein the first member has a cylindrical surface extending from a plane on which the groove is formed.   The case insertion component mounting structure according to claim 3 or 4, wherein the first member has a screw hole for mounting the second member on a plane on which the groove is formed.   6. The case insertion component mounting structure according to claim 5, wherein the electrical component is a component in which an insulating material is filled in a sheath.   7. A cylindrical holding tube having one end communicating with the insertion hole and the other end closed is provided inside the case, and one side of the electrical component is inserted into the holding tube. Mounting structure for the case insert part described.

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