JP6037162B2 - Controller case and hot water apparatus equipped with the same - Google Patents

Description

  The present invention relates to a controller case that is used for housing a control board for controlling desired equipment such as a hot water device, and to attach an electrical component such as a leakage breaker, and a hot water device including the controller case.

The present applicant has previously proposed the means described in Patent Document 1 as means for attaching the earth leakage breaker to the controller case that accommodates the control board.
In the means described in the document, a structure having a pair of projecting pieces on both the left and right side surfaces is used as a leakage breaker. On the other hand, the back plate portion of the controller case is provided with a receiving portion that forms a space portion on the front side of the back plate portion, and the earth leakage breaker is slid along the front surface of the back plate portion in a predetermined direction. The pair of projecting pieces of the earth leakage breaker are made to enter the space portion so that the earth leakage breaker can be held. Further, the controller case has an elastically deformable lock for restricting the leakage breaker from moving in a direction opposite to the direction of entering the space when the leakage breaker is held by the receiving portion. A nail is also provided.
According to such a configuration, it is possible to attach the earth leakage breaker to the controller case by a simple operation by simply placing the earth leakage breaker at a predetermined position of the controller case and then sliding it. Since it is not necessary to screw the earth leakage breaker to the controller case, the workability of installing the earth leakage breaker is excellent.

  However, the prior art still has room for improvement as described below.

That is, it is necessary to select an earth leakage breaker attached to the controller case with a predetermined rated current in accordance with the magnitude of the power supply voltage, the specifications of the power supply circuit, and the like. When the rated current of the earth leakage breaker is changed, in many cases, the size of the earth leakage breaker is also changed.
On the other hand, the conventional controller case is only configured so that one type of leakage breaker of a predetermined size can be attached. Therefore, when using another earth leakage breaker having a different size as the earth leakage breaker, it is necessary to newly design and manufacture a controller case corresponding to that. This increases the cost. In addition, it becomes necessary to use different controller cases depending on the size of the earth leakage breaker, and handling thereof becomes troublesome.

Japanese Patent No. 4452072

  The present invention has been conceived under the circumstances as described above, and even when the size of an electrical component such as an earth leakage breaker is changed, the whole is remanufactured correspondingly. An object of the present invention is to provide a controller case that can eliminate or reduce the necessity, is easy to use, and is excellent in economic efficiency, and a hot water device including the controller case.

  In order to solve the above problems, the present invention takes the following technical means.

The controller case provided by the first aspect of the present invention is used for accommodating a control board for controlling a desired device, and has a back plate portion for attaching an electrical component related to the device. The electrical component mounting portion includes at least one of the electrical components by sliding the electrical component along a front surface of the back plate portion in a predetermined first direction. Forming a space part into which the part can enter and holding the electric part along the back plate part in a state in which the electric part is restricted from sliding in the first direction by a certain amount or more. And a receiving portion that can be separated from the receiving portion in a second direction opposite to the first direction, and the electric component is held by the receiving portion. In the second direction And a, a locking pawl for the engaged to the electrical component so as to restrict that movement, a controller case, the receiving unit, before positioned on the front side of the space wall portion The locking claw includes a first locking claw and a second locking claw having a larger distance from the receiving portion than the first locking claw . claws and is provided with, first and second locking pawl has tip protrudes forward of the back plate portion, and the distal end portion side is displaced in the longitudinal direction of thickness of the back plate portion When the second locking claw is locked to the electrical component held by the receiving portion, the first locking claw is moved backward by the electrical component. As a result of being elastically deformed by being pressed, the electrical component can be pressed against the front wall portion of the receiving portion by its elastic force. In the natural state where the first and second locking claws are not elastically deformed, the tip end of the second locking claw is more than the tip end portion of the first locking claw. The part is characterized in that the forward projecting dimension from the back plate part is increased .

According to such a configuration, it is possible to appropriately attach at least two types of electrical components having different sizes to the electrical component mounting portion of the controller case. For this reason, unlike the prior art, it is possible to eliminate or reduce the need to change the specification of the controller case in response to the change in the size of the electrical component. Therefore, the controller case can be shared and the cost can be reduced. Moreover, the troublesomeness of using the controller case according to the size of the electrical component can be reduced.
On the other hand, in the present invention, the first and second locking claws are provided as means for enabling the attachment of a plurality of types of electrical components. Such a configuration is simple, and the controller case Thus, it is possible to appropriately avoid such a problem that the manufacturing cost of the product greatly increases.

In addition, according to the above configuration, when the second locking claw is locked to the electrical component and the attachment is intended, the electrical component is received by the elastic force of the first locking claw. Pressed against the front wall of the. Therefore, the positioning and fixing of the electrical component in the front-rear direction is ensured, which is preferable for suppressing the rattling of the electrical component. Since the electrical component attached using the second locking claw is larger in size than the electrical component attached using the first locking claw, it is inherently unstable. According to the present invention, it is more preferable in that rattling of such a large size electrical component can be suppressed.

Furthermore, according to the said structure, the following effects are acquired.
That is, in the case where the second locking claw is locked to the electrical component and the mounting is attempted, the electrical component is pressed forward by the elastic force of the first locking claw, A phenomenon may occur in which the electrical component moves away from the back plate portion in front of it. When such a phenomenon occurs, unlike the above-described configuration, if the protruding dimension of the tip of the second locking claw is small, the tip of the second locking claw is placed against the electrical component. It may be difficult to make sufficient contact, and the locked state may become unstable. On the other hand, according to the present invention, such a concern can be appropriately avoided.

  In the present invention, preferably, each of the first and second locking claws is formed by providing a slit in the back plate portion, and among the slits, the second locking claw is formed. The slit for forming is also used as a slit forming a part of the outer shape of the first locking claw.

  According to such a configuration, the first and second locking claws can be easily formed by providing a slit in the back plate portion, and the second locking claws are formed. Since the slit also forms a part of the outer shape of the first locking claw, the number of slits can be reduced. This is preferable in terms of facilitating the molding of the controller case (simplification of the molding die structure) and ensuring the strength of the back plate portion. Moreover, the advantage which makes the 1st and 2nd latching nail | claw approach mutually and prevents these occupied space from becoming bulky is also acquired.

  In the present invention, preferably, a portion of the back plate portion to which the base end portions of the first and second locking claws are connected is a thick portion having a thickness larger than the peripheral portion thereof. It is formed so that the thickness of these portions gradually decreases from the thick portion toward the proximal end portions of the first and second locking claws.

  According to such a configuration, when the first and second locking claws are elastically deformed, it is possible to make it difficult to cause damage such as cracks at their proximal end portions or the vicinity thereof.

The hot water apparatus provided by the second aspect of the present invention includes the controller case provided by the first aspect of the present invention.
According to such a configuration, the same effects as described for the controller case provided by the first aspect of the present invention can be obtained.

  Other features and advantages of the present invention will become more apparent from the following description of embodiments of the present invention with reference to the accompanying drawings.

It is a schematic explanatory drawing which shows typically an example of the hot water apparatus with which the controller case which concerns on this invention was integrated. It is a perspective view which shows the specific structure of the controller case shown in FIG. FIG. 3 is an exploded perspective view of FIG. 2. (A) is the principal part front view of FIG. 2, (b) is the principal part enlarged view of (a), (c) is IVc-IVc sectional drawing of (b). (A)-(c) is sectional drawing which shows an example of the state which attaches an earth leakage breaker to a controller case. (A) is a principal part expanded sectional view of Drawing 5 (c), and (b) is an arrow VIb principal part front view of (a). (A), (b) is sectional drawing which shows the state which attaches the other earth-leakage breaker from which a size differs to a controller case. It is a principal part perspective view which shows the other example of this invention. (A), (b) is a principal part front view which shows the other example of this invention.

  Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings.

A hot water device 5 shown in FIG. 1 includes a controller case C incorporated in an exterior case 50. In the controller case C, the control board 2, the power circuit board 3, and the earth leakage breaker 4 are assembled.
The hot water device 5 performs hot water heating for hot water supply by recovering heat from a combustion gas generated by a burner 52 that receives supply of combustion air from a fan 51 using a heat exchanger 53. The control board 2 constitutes a control circuit for performing operation control of each part of the hot water device 5. The power supply circuit board 3 constitutes a power supply circuit that converts the voltage and current of the electric power supplied from the commercial power supply via the leakage breaker 4 so as to be adapted to the operation of each part of the control circuit and the hot water apparatus 5. is there.

The earth leakage breaker 4 corresponds to a specific example of the electrical component referred to in the present invention, and has a configuration in which an earth leakage detection circuit, a power interruption circuit at the time of earth leakage detection, and the like are incorporated in a resin case. As shown in FIGS. 2 and 3, for example, there are two types of earth leakage breakers 4 (4 </ b> A and 4 </ b> B) having different sizes.
A pair of projecting piece portions 40 are provided on both side surfaces of the earth leakage breaker 4 in the left-right width direction, and each projecting piece portion 40 is formed with a notched hole 40a. In the two types of earth leakage breakers 4A and 4B, the dimensions La and Lb from the hole 40a to the upper end have a relationship of La <Lb, but the sizes of other parts such as the lateral width and thickness of the resin case are the same. . On the front surface of the earth leakage breaker 4, an earth leakage display lamp 42 and an operation button 43 are provided, and a wiring terminal part 44 covered with an open / close cover 44a is also provided. The operation button 43 is, for example, a reset button or an operation test button. The drawing shows a state in which one electrical wire 45 serving as a ground wire is connected to the wiring terminal portion 44. However, the wiring terminal portion 44 is exposed by opening the opening / closing cover 44a. Other electrical lines (not shown) can be connected to the terminal portion 44 for use. Examples of other electrical wires include one for connecting the earth leakage breaker 4 to an external commercial power source and one for connecting to a power circuit of the power circuit board 3.

  The controller case C is a resin molded product, and has a configuration in which a back plate portion 10 that is substantially rectangular in front view and a plurality of ribs 12a to 12c that protrude forward from the back plate portion 10 and extend in the vertical height direction are formed. Have. The control board 2 is accommodated and attached to the recess between the ribs 12a and 12b, and the power circuit board 3 is accommodated and attached to the recess between the ribs 12b and 12c.

  A back plate portion 10a for attaching the earth leakage breaker 4 is integrally connected to one side of the rib 12c in the controller case C, and an electrical component mounting portion E is provided using the back plate portion 10a. Is configured. The electrical component mounting portion E includes a pair of receiving portions 6 and first and second locking claws 7A and 7B.

  The receiving part 6 is a part for supporting the protruding piece part 40 of the earth leakage breaker 4, and has a lower wall part 60 and a front wall part 61 as well shown in FIGS. 5 and 6. . The lower wall portion 60 is a portion that protrudes forward from the front surface of the back plate portion 10 a, and the front wall portion 61 is a wall portion that stands upward from the distal end portion of the lower wall portion 60. On the rear side of the front wall portion 61, a space portion 62 (gap) is formed in which one side portion near the center of the upper portion and the back plate portion 10a is opened. The space part 62 is a part for allowing the protruding piece part 40 to slide in. In the present embodiment, the hole part 14 is formed in the part of the back plate part 10a facing the front wall part 61 and the space part 62. Is formed.

  As shown in FIGS. 5A and 5B, the earth leakage breaker 4 is brought into contact with the front surface of the back plate portion 10a and then slid downward (an example of the first direction in the present invention). As shown in (c), the protruding piece 40 can enter the space 62. Since the lower wall portion 60 exists below the space portion 62, the leakage breaker 4 does not descend more than a certain level. As a result, the earth leakage breaker 4 can be held along the back plate portion 10a.

  A boss portion 63 protruding to the rear side of the controller case C is provided on a surface (rear surface) of the front wall portion 61 facing the space portion 62 side. As shown well in FIG. 6, the boss 63 is a portion for engaging the protruding piece 40 into the hole 40 a of the protruding piece 40 when the protruding piece 40 enters the space 62. By positioning the boss 63 in the hole 40a, the earth leakage breaker 4 can be positioned more reliably and with high accuracy. The boss portion 63 is, for example, a circular protrusion in a rear view, but preferably, the tip surface 63a is inclined so that the projecting dimension from the front wall portion 61 increases as it proceeds downward. According to such a configuration, the boss portion 63 can be accurately engaged with the hole portion 40a while facilitating smoothness when the protruding piece portion 40 enters the space portion 62 from above. The hole portion 40a has a long hole shape extending in the horizontal direction, and the boss portion 63 may be engaged at any position in the longitudinal direction of the hole portion 40a. In FIG. 6B, if the boss 63 is engaged with the end of the hole 40a (the portion indicated by reference numeral n1), the leakage breaker 4 is positioned in the left-right width direction using the boss 63. It is also possible to plan. However, in the present embodiment, the leakage breaker 4 is positioned in the left-right width direction by sandwiching the main body portion of the leakage breaker 4 between the pair of left and right receiving portions 6.

When the first and second locking claws 7A and 7B hold the leakage breaker 4 in the receiving portion 6, the leakage breaker 4 moves upward (an example of the second direction of the present invention). It is a part for blocking, and is provided above the pair of receiving portions 6. The first and second locking claws 7A and 7B have projections 70a and 70b projecting forward at the tip ends of the lower ends, as shown well in FIG. 4B. The back plate portion 10a is provided by forming two slits 18a and 18b having different substantially square shapes when viewed from the front. The second locking claw 7B is a rectangular portion surrounded by a small slit 18a and having an upper portion connected to the back plate portion 10a. The first latching claw 7A is a portion having a substantially inverted square shape in front view sandwiched between the two slits 18a and 18b, and the upper portion thereof is connected to the back plate portion 10a. The slit 18a forms the second locking claw 7B and also forms a part of the first locking claw 7A. The second locking claw 7B It is provided in a form surrounded by the nails 7A.
According to such a configuration, it is possible to appropriately and efficiently form the first and second locking claws 7A and 7B close to each other while reducing the total number of slits 18a and 18b. Moreover, the center of the 1st and 2nd nail | claw 7A, 7B for the left-right width direction can also be made to correspond. As will be described later, when the first and second locking claws 7A and 7B are locked to the upper surface of the earth leakage breaker 4, the first and second This is preferable when the two locking claws 7A and 7B are locked so as not to be biased.

  The first locking claw 7A is used for positioning the earth leakage breaker 4A, while the second locking claw 7B is used for positioning the earth leakage breaker 4B. For this purpose, the heights of the lower ends of the first and second locking claws 7A and 7B are different. For example, as shown in FIG. 4A, from the boss portion 63 of the receiving portion 6 to them. The heights L1 and L2 have a relationship of L1 <L2. L1 and L2 are dimensions corresponding to the heights La and Lb of the upper portions of the leakage breakers 4A and 4B shown in FIG.

The lower end tip portions of the first and second locking claws 7A and 7B can be elastically deformed in the front-rear thickness direction of the back plate portion 10a. As a result, for example, as shown in FIG. 5B, even if the first and second locking claws 7A and 7B are pressed by the earth leakage breaker 4 and bent backward, the same figure (c) As shown in FIG. 5, when the electric leakage breaker 4 is released, the original state is restored. By such an action, when the leakage breaker 4A is attached, the first locking claw 7A is locked to the upper surface of the leakage breaker 4A, and the upward movement of the leakage breaker 4A is restricted.
On the other hand, when the leakage breaker 4B shown in FIG. 7 is attached, the second locking claw 7B returns to the original state and is locked to the upper surface of the leakage breaker 4B. The first locking claw 7A remains pressed rearward by the leakage breaker 4B. Therefore, in such a state, the earth leakage breaker 4B is urged forward by the elastic force F1 of the first locking claw 7A, and the protruding piece 40 is pressed against the front wall 61 of the receiving part 6. It will be.

  As shown in FIG. 4C, in the natural state where the first and second locking claws 7A and 7B are not elastically deformed, the protrusions 70a and 70b protrude forward of the back plate 10a. The dimensions L11 and L12 are different. The relationship is L11 <L12. For example, L11 is 1.45 mm, while L12 is 2.00 mm. The operation based on such a configuration will be described later.

  Of the back plate portion 10a, the portion where the base end portions (upper end portions) of the first and second locking claws 7A and 7B are connected is a thick wall provided with a convex portion 17a protruding forward. The thickness of the portion 17 is partially larger than that of the peripheral portion. The connecting portion between the thick portion 17 and the first and second locking claws 7A and 7B is a curved surface having curvature radii Ra and Rb. These portions are formed so that the thickness of these portions gradually decreases as the base ends of the claws 7A and 7B are advanced. By providing the thick portion 17, the curvature radii Ra and Rb can be increased. According to such a configuration, when the first and second locking claws 7A and 7B are bent and deformed, it is possible to make it difficult to cause damage or the like at their base end portions. When the earth leakage breaker 4 is attached, the first and second locking claws 7A and 7B are deflected rearwardly, but at that time, a large stress (due to bending) is applied to the portion of the curvature radius Ra on the front side. Tensile stress), and the resin is easily damaged by such stress. Therefore, increasing the radius of curvature Ra by forming the convex portion 17a is more effective in preventing damage to the first and second locking claws 7A and 7B.

  Of the first and second locking claws 7A and 7B, portions above the protrusions 70a and 70b are formed to be relatively thin so as to be easily deformed. However, the thicknesses t1 and t2 of the first and second locking claws 7A and 7B are preferably in a relationship of t1> t2. Since the second locking claw 7B is shorter in size than the first locking claw 7A, it is inherently difficult to bend and deform. However, if the thickness t2 is reduced, the first locking claw It becomes easy to bend and deform like the pawl 7A.

  Next, the operation of the controller case C will be described.

First, of the two types of earth leakage breakers 4A and 4B, the earth leakage breaker 4A can be easily attached to the front side of the back plate portion 10a by the procedure shown in FIG. That is, each projecting piece 40 can enter and be held in the space 62 of the receiving part 6 by sliding the earth leakage breaker 4A downward along the front surface of the back plate part 10a. Since the projection 70a of the first locking claw 7A is locked to the upper surface of the leakage breaker 4A, the leakage breaker 4A is appropriately prevented from floating upward.
On the other hand, as shown in FIG. 7, the leakage breaker 4B can be easily attached to the front side of the back plate portion 10a by using the receiving portion 6 by performing the same operation as in the case of the leakage breaker 4A. Is possible. In this case, the second locking claw 7B is locked to the upper surface of the leakage breaker 4B, and the leakage breaker 4 is appropriately prevented from floating upward.
Thus, if any one of the leakage breakers 4A and 4B can be attached to one controller case C, it is not necessary to prepare two types of controller cases corresponding to each of the leakage breakers 4A and 4B. Cost reduction can be achieved.

  In the state shown in FIG. 7B, the earth leakage breaker 4B is pressed forward by the resilient force F1 of the first locking claw 7A, and the protruding piece 40 is pressed against the front wall 61 of the receiving part 6. Therefore, the effect of preventing the backlash in the front-rear direction of the earth leakage breaker 4B is also obtained. When the earth leakage breaker 4B receives the elastic force F1, the earth leakage breaker 4B may be displaced forward so as to be separated from the back plate portion 10a (however, in the drawing, in such a state) Is not shown). On the other hand, the protrusion 70b of the second locking claw 7B has a protruding height L12 as described with reference to FIG. 4C, so that the earth leakage breaker 4B is forward. Even if it is slightly displaced, it is possible to appropriately lock the protrusion 70b with a large dimensional amount with respect to the upper surface of the leakage breaker 4B. Due to the fact that the earth leakage breaker 4B is displaced forward, the problem that the contact dimension between the second locking claw 7B and the earth leakage breaker 4B becomes too small is appropriately avoided.

  In addition, in the present embodiment, since the boss 63 is engaged with the hole 40a of the protruding piece 40, the leakage breaker 4 can be positioned and fixed with high precision. In order to prevent (rattle, etc. at the time of conveyance), it becomes still more preferable. When the means for positioning the earth leakage breaker 4 by engaging the boss 63 and the hole 40a as in this embodiment is adopted, the first and second locking claws 7A and 7B are: For example, even if a situation occurs in which the engagement state of the boss portion 63 into the hole 40a is canceled due to a large load acting on the leakage breaker 4, it is ensured that the leakage breaker 4 is lifted upward. It will have a role to prevent.

  8 and 9 show another embodiment of the present invention. In these drawings, elements that are the same as or similar to those in the above embodiment are given the same reference numerals as in the above embodiment.

In the embodiment shown in FIG. 8, the electrical component 4 </ b> C (4) in which the circuit board 47 is accommodated in the case 46 is an attachment target to the electrical component attachment portion E. The circuit board 47 constitutes an electric circuit for executing auxiliary data processing or operation control with respect to the control circuit configured by the control board 2 shown in FIG. 1, and includes a plurality of operation switches 47a and A display 47b and the like are also provided as appropriate. The case 46 is formed with a recess for accommodating the circuit board 47. The outer shape and size of the case 46 are the same as those of the above-described leakage breakers 4A and 4B, and a pair of holes 40a are provided. A protruding piece 40 is provided. The height Lc from each protruding piece 40 to the upper surface of the case 47, the lateral width of the case 47, and the like are the same as those of any one of the leakage breakers 4A and 4B.
The electrical component 4C as described above can be appropriately attached to the electrical component attachment portion E in the same manner as the leakage breakers 4A and 4B. As understood from the present embodiment, the electrical component referred to in the present invention is not limited to the earth leakage breaker, and may be a case that accommodates other circuit boards, and may be an electrical component other than these. Good.

In the embodiment shown in FIG. 9A, the protrusion 70a (cross-hatched portion in FIG. 9) is provided only at a portion closer to the center of the tip portion extending in the left-right width direction of the first locking claw 7A. (In the configuration shown in FIG. 4 (b) of the above embodiment, the protrusion 70a is formed over substantially the entire length in the left-right width direction of the tip of the first locking claw 7A. ) Some earth leakage breakers have a plurality of ribs formed on the back side thereof. As described above, it is possible to avoid the projection 70a from interfering with the rib by partially forming the projection 70a.

In the embodiment shown in FIG. 9 (b), the first locking claws 7A are provided as a pair of left and right. The pair of first locking claws 7A corresponds to a form in which the center portion on the front end side of the first locking claws 7A shown in FIG. Are provided in an arrangement sandwiched between the slits 18c. Even if it is such a structure, the effect | action which this invention intends is acquired.
As can be understood from the embodiment of FIGS. 9A and 9B, the specific shapes and numbers of the first and second locking claws can be variously changed. In the above-described embodiment, the first and second locking claws are provided close to each other with the slit interposed therebetween. Instead, the first and second locking claws are considerably separated from each other. However, the slit may not be shared.

  The present invention is not limited to the contents of the above-described embodiment. The specific configuration of each part of the controller case and the hot water apparatus according to the present invention can be variously modified within the scope intended by the present invention.

In the present invention, the receiving part forms a space part in which at least a part of the electrical component to be attached can be slid into and in a state where the electrical part is restricted from moving more than a certain amount in the slide entry direction. Any configuration that can hold electrical components is acceptable. The direction in which the electrical component is slid in (the first direction in the present invention) does not necessarily have to be the downward direction. For example, the electrical component mounting portion E of the above-described embodiment may be turned upside down, and the electrical component may be slid upward to be mounted. Alternatively, the electrical component mounting portion E may be placed on its side, It is also possible to adopt a configuration that slides in a substantially horizontal direction.
The specific shapes and numbers of the first and second locking claws of the present invention are not limited as described above, but they are provided with different distances from the receiving portion. Therefore, even if any of at least two types of electrical components having different sizes is to be attached, the electrical component is locked to the electrical component so as to restrict movement in a predetermined direction. What is necessary is just to be set as the possible structure.
In the present invention, in addition to the first and second locking claws, a third locking claw having a different distance from the receiving portion in a predetermined direction may be further provided.

  The controller case referred to in the present invention means a case for accommodating a control board, and it does not matter whether or not a device different from the control board and the electric device intended by the present invention is separately accommodated. The device controlled using the control board is not limited to a hot water device such as a hot water supply device. Therefore, the controller case according to the present invention can be used by being incorporated in an apparatus other than the hot water apparatus.

C Controller case E Mounting part 2 for electric parts Control board 4 (4A, 4B) Earth leakage breaker (electric parts)
4 (4C) Electrical components (combination of circuit board and case)
5 Hot-water device 6 Receiving part 7A, 7B 1st and 2nd latching claw 10a Back board part (of the attachment part for electrical components)
17 Thick part 18a, 18b Slit 40 Projection piece part (of earth leakage breaker)
61 Front wall (in the receiving part)
62 Space (receiving part)
70a, 70b Protrusion (of the first and second locking claws)

Claims (4)

It is used for the purpose of housing a control board for controlling a desired device, and includes an electrical component mounting portion having a back plate portion for mounting an electrical component related to the device,
This mounting part for electrical parts is
By sliding the electrical component along a front surface of the back plate portion in a predetermined first direction, a space portion into which at least a part of the electrical component can enter is formed, and the electrical component A receiving part capable of holding the electrical component along the back plate part in a state in which the sliding in the first direction is restricted more than a certain amount,
The electric component is provided in a second direction opposite to the first direction from the receiving portion, and the electric component moves in the second direction when the electric component is held by the receiving portion. A locking claw for locking the electrical component so as to restrict
A controller case comprising:
The receiving part has a front wall part located on the front side of the space part,
As the locking pawl, a first locking pawl and a second locking claw separation dimension is greater from the receiving portion is provided than the first locking pawl And
These first and second locking claws can be elastically deformed such that the tip portion protrudes forward of the back plate portion, and the tip portion side is displaced in the longitudinal thickness direction of the back plate portion,
When the second locking claw is locked to the electrical component held by the receiving portion, the first locking claw is pressed backward by the electrical component and elastically deformed. The electric component can be pressed against the front wall portion of the receiving portion by the elastic force,
In the natural state in which the first and second locking claws are not elastically deformed, the distal end portion of the second locking claw is more toward the distal end portion than the distal end portion of the first locking claw. The controller case is characterized in that a forward projecting dimension from the back plate portion is increased . The controller case according to claim 1,
Each of the first and second locking claws is formed by providing a slit in the back plate portion,
Of the slits, the slit for forming the second locking claw also serves as a slit forming a part of the outer shape of the first locking claw . The controller case according to claim 2,
Of the back plate portion, a portion where the base end portions of the first and second locking claws are connected to each other is a thick portion having a thickness larger than that of the peripheral portion. A controller case formed so that the thickness of these portions gradually decreases as it goes to the proximal end portions of the first and second locking claws . A hot water apparatus comprising the controller case according to any one of claims 1 to 3.

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