JP3668566B2 - Electrical connection structure of operation panel - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electrical connection structure of an operation panel, and more particularly to a connection structure of a signal cable or the like to an operation panel attached and fixed to a wall surface.
[0002]
[Prior art]
As this type of electrical connection structure, a configuration in which a remote control operation panel such as a water heater is attached and fixed to a bathroom wall surface or a kitchen wall surface is known.
As shown in FIG. 1, this remote control operation panel has a cylindrical portion (indicated as an electric cord (7)) for introducing a signal cord and a power cord (hereinafter referred to as an electric cord (7)) on the back of a box main body (1) which is a main portion of the operation panel. 6) is provided, and the electric cord (7) introduced from the cylindrical portion is connected to the control component substrate (10) in the box main body (1).
[0003]
[Problems to be solved by the invention]
In handling the box main body (1), when tension is applied to the electric cord (7), the connection between the electric cord (7) and the terminal of the substrate (10) inside the box main body (1) The tension acts also on the portion and the like, and the connection portion may be loosened due to this tension, which easily causes poor electrical connection. Therefore, in order to prevent this tension from acting, the conventional operation panel is provided with the cord fixing means (62) in the cylindrical portion (6). Since this cord fixing means (62) needs to be finished so as to prevent slippage between the electric cord (7) and the cylindrical portion (6) and to be loosened as necessary, the fixing means (62) There is a disadvantage in that the bulk of the whole and the part that accommodates this increases, and the structure becomes complicated.
[0004]
The invention of claim 1 is the “operating panel configured to introduce the electrical cord (7) from the back of the box main body (1) and electrically connect it to the board (10) including the internal electrical component group”. Even if a tension acts on the main body, the electric cord can be fixed in the box main body (1) without loosening, and the structure for fixing is simple and the volume of the means for fixing can be reduced. The task is to make it.
[0005]
In addition to solving the above-mentioned problems, the invention of claim 2 and below is intended to exert the effects described in the “Effect” column.
[0006]
[Means for Solving the Problems]
The problem-solving means of the invention of claim 1 devised to solve the above-mentioned problem is as follows: “The box main body (1) covers the bottom half (B) attached to the wall surface side and the front side to cover the operation part. A space is provided between the bottom flat portion of the bottom half (B) and the substrate (10), and the bottom flat portion includes the bottom half. A cylindrical portion (6) is provided for connecting the inside and outside of (B) and for introducing an electrical cord (7), and the cylindrical cord (6) holds the electrical cord (7) one by one. A rubber holding body is inserted and fixed in a retaining state, and a latching tool (60) that entangles and locks the electric cord (7) one by one to the bottom flat portion of the bottom half (B) Projecting into the space,
The electric cord (7) is composed of an inner cord (71) connected to the substrate (10) side and an outer cord (72) introduced into the space from outside the box main body (1). The cord (71) and the external cord (72) are detachably connected by a connector, the space is sized to accommodate the connector, and the board (10) is attached to the front half (A) side, The half (A) and the bottom half (B) are separably joined ”.
The above solution works as follows.
[0007]
In this device, the electric cord (7) is introduced from the cylindrical portion (6) into the box main body (1) and is electrically connected to the electric parts of the substrate (10). The electrical cord between the cylindrical part (6) and the electrical component is inserted between the bottom flat part and the substrate (10). ) Are entangled one by one and locked. Thereby, the electric cord (7) is prevented from loosening at this portion. Further, since the electric cord (7) is inserted one by one through the holding body (61) fixed to the cylindrical portion (6), the electric cord (7) is also held in this portion. Furthermore, since the electric cord (7) wired so as to pass through the portion through which the holder (61) is inserted and the locking tool (60) is bent at a substantially right angle, the electric cord is also electrically connected to the bent portion. The slippage of the cord (7) is prevented.
[0009]
In this way, the electric cord is locked at three places.
When the front half (A) and the bottom half (B) are separated, the substrate (10) attached to the front half (A) is exposed. Then, by removing the connector located in the space between the board (10) and the bottom flat part of the bottom half (B), the internal cord (71) connected to the board (10) and the bottom half ( The external cord (72) inserted through the B) side is separated. Therefore, it is possible to check whether each of the component groups mounted on the board (10) is abnormal or normal only on the side of the internal cord (71) connected to the board (10).
[0010]
At this time, if the configuration is such that “the substrate (10) is removable”, the operation panel can be repaired by replacing the substrate (10).
The invention of claim 3 is the invention according to any one of the above-mentioned inventions, wherein the structure of the locking tool (60) is limited, and “the bottom half (B) is made of a synthetic resin and the locking tool is formed. (60) is molded integrally with the bottom flat part of the bottom half (B), and a central protrusion (62) standing upright from the bottom flat part and a pair of clamping protrusions (63) (63 The gap between the central projection (62) and the clamping projection (63) is set to a gap suitable for press-fitting the electric cord (7).
[0011]
In this device, the electric cord (7) is locked to the locking tool (60) by press-fitting the electric cord (7) between the central protrusion (62) and the clamping protrusion (63). it can. As a method of locking the electric cord (7) to the locking tool (60), the electric cord (7) is wound around the central projection (62) so that the electric cord (7) is wrapped around the central projection (62). A method of locking the electric cord (7) so that the electric cord (7) is press-fitted into the gap between the protrusion (63) can also be adopted.
[0012]
In this case, the locking action is further improved by the locking tool (60).
[0013]
【The invention's effect】
According to the invention of claim 1, as described above, the electric cord (7) introduced into the box main body (1) includes the holding body (61), the fastener (60), and the electric cord between them. Since the anti-slip state is locked at the three bent portions of (7), even if a tension acts on the electric cord (7), the tension does not act on the connection portion with the substrate (10).
[0014]
In addition, since the locking device (60) is only provided on the bottom flat portion of the bottom half (B), the cord is less loosened than the conventional one that is fixed only by the cord insertion portion of the tube portion (6). Therefore, the configuration can be simplified. Further, the electric cord (7) is separated into an inner cord (71) on the substrate (10) side and an outer cord (72) inserted through the bottom half (B) side, and the bottom half (B) is separated from the front half. Since it can be separated from the body (A), it is easy to check each abnormality of the component group mounted on the board (10).
[0015]
According to the second aspect of the invention, in addition to the above effect, the operation panel can be easily repaired by replacing the substrate (10).
According to the invention of claim 3, the electric cord (7) can be easily locked by the locking tool (60), and in addition, the locking tool (60) is formed on the bottom plane of the bottom half (B). Since it can be manufactured by injection molding integrally with the part, the configuration can be further simplified.
[0016]
Further, when the electric cord (7) is locked so as to be wound around the central protrusion (62), the locking of the electric cord by the locking tool (60) is further ensured.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
The present invention is carried out, for example, on a remote control panel of a bath apparatus with a water heater. Usually, this type of remote control panel includes a remote control panel for bathroom (bathroom remote control) and a main control panel (main remote control) installed in the kitchen.
In the embodiment shown in FIG. 2 and subsequent figures, the present invention is implemented in a bathroom remote controller.
[0018]
This bathroom remote control is required to be watertight. However, as shown in the front view of Fig. 2 and the cross-sectional view of Fig. 4, it accommodates the board (10) and incorporates the switch (3), auxiliary operating body (1b), etc. The box main body (1) and a cover body (2) for covering the front of the box main body (1).
In the bathroom remote control, four main operating bodies (1a) and (1a) are arranged in the center of the front and side, and on the left side is a window plate that covers the front of the fluorescent display tube type light emitting display unit (5). (51) is exposed. The window plate (51) is made of a light transmissive synthetic resin. On the right side, a cover plate (21) that opens outward in the left-right direction is provided.
[0019]
The box main body (1) is composed of a front half (A) and a bottom half (B) that closes the opening on the back side thereof. A substrate (10) is attached to the front half (A). On the front side of the substrate (10), a switch (3) operated by each main operating body (1a), a hidden switch (30) (30), and the light emitting display unit (5) are attached, Other control elements are attached to the back side.
[0020]
The front half of the front half (A) is provided with an auxiliary operation surface portion (22) serving as an operation portion of a hidden switch (30) (30) in a range covered by the lid plate (21), Auxiliary operating bodies (1b) and (1b) are provided at portions corresponding to the back side of the main operating bodies (1a) and (1a).
As shown in the cross-sectional view of FIG. 4, the surface of the auxiliary operation surface portion (22) is a single sheet covering the entire surface of the arrangement portion of the operation buttons (301) and (301) for the hidden switches (30) and (30). The presser sheet (172) covers the movable gap between the operation button (301) and the front half (A), which is sealed by the presser sheet (172). Yes. The portion of the presser sheet (172) facing the operation button (301) is a partial movable portion that closes the button hole provided in the front half (A), and this is the operation portion.
[0021]
[Auxiliary operation body (1b)]
The auxiliary operating body (1b) is composed of two synthetic resin first lens bodies (101) and second lens bodies (102) as shown in the cross-sectional views of FIGS. In the two-lens body (102), a flange portion projects from the peripheral edge portion, and the first lens body (101) is accommodated in a recessed portion (103) formed in the inner peripheral area of the flange portion. The two first lens bodies (101) and the second lens body (102) overlap each other, and the light from the light emitting part (32) of the switch (3) is efficiently transmitted to the entire area of the main operation body (1a). The lens configuration allows the light to be condensed.
[0022]
The auxiliary operating body (1b) is accommodated in a recessed portion (18) formed in the front half (A), and is configured to reciprocate in the front-back direction in the recessed portion (18). The four auxiliary operating bodies (1b) and (1b) are disposed on the front plane of the front half (A) from an elastic synthetic resin sheet or a flexible synthetic resin sheet as shown in FIG. Is covered with a presser sheet (171). Therefore, the auxiliary operating bodies (1b) (1b) accommodated in the recessed portions (18) (18) are held movably, and the front side of the gap portion and the like for making the movably movable is the presser sheet (171 ) To ensure water-tightness of this part.
[0023]
[Features of window plate (51)]
The window plate (51) is integrally formed with the front half (A). In this embodiment, the window plate (51) is integrated by so-called two-color molding. The light emitting display unit (5) is a flat rectangular parallelepiped, a range slightly smaller than the front is an effective display area, and an opening (25) slightly smaller than the effective display area is formed in the front half (A). In the form that is formed, the first injection molding is performed, and then the window plate (51) is placed in a rectangular area covering the opening (25) as shown in FIG. The second injection molding is performed with the synthetic resin. Thus, the appearance of the window plate (51) exposed from the front of the cover body (2) from the front is bordered between the periphery of the window plate (51) and the periphery of the opening (25) in a band shape. It will be the appearance. In this example, the window plate (51) has a reddish smoke color, and the front half (A) has a light gray color. As a result, the border portion looks dark gray.
[0024]
An annular packing (26) is interposed between the peripheral edge surface of the front half body (A) and the peripheral edge surface of the bottom half body (B) to secure water tightness, and by screwing a plurality of locations, The front half (A) and the bottom half (B) constitute a flat box-shaped box main body (1). In this state, the watertightness of each part of the auxiliary operation surface part (22), the auxiliary operation body (1b) (1b) and the window plate (51) is ensured as described above. .
[0025]
In this example, the front surface of the front half body (A) is covered by the cover body (2), but the portion corresponding to the window plate (51) in the cover body (2) An opening (52) for fitting the front side of the window plate (51) is formed. Further, on the front side of the auxiliary operating bodies (1b) and (1b), main operating bodies (1a) and (1a) provided at the tip of the elastic plate (13) as shown in FIGS. The front side of the main operating bodies (1a) (1a) is exposed on the surface of the cover body (2). A cross-sectional configuration of the main operating body (1a) and a connecting bar (14) attached to the back surface of the cover body (2) are provided.
[0026]
In this case, the light from the light emitting part (32) of the switch (3) is transmitted through the first lens body (101) and the second lens body (102) to the display printing layer on the back surface of the main operation body (1a). Since the light is focused on (11), the display of the portion can be seen from the front of the bathroom remote controller through the transparent main operation body (1a) due to the scattering of the display print layer (11).
The electric cord (7) (external cord (72)) such as the power cord and signal cord introduced into the box main body (1) is in a watertight state in the central cylindrical portion (6) of the bottom half (B). The rubber bushing (61) fitted is inserted into the box main body (1). In the box main body (1), the switch (3), the hidden switch (30), and the control element are wired. When the electric cord (7) is inserted through the bushing (61), the bushing (61) is temporarily fixed in a non-slip state by friction of the insertion portion.
[0027]
[Wire stop]
A locking tool (60) as shown in FIGS. 9 and 10 is provided on the inner surface of the bottom half (B). This locking tool (60) is composed of a flat central protrusion (62) formed integrally with the bottom half (B) and flat sandwiching protrusions (63) (63) facing each other across the center protrusion (62). The projections are arranged in parallel so that the flat cross sections of the central projection (62) and the clamping projection (63) are parallel to each other. As shown in FIG. 8, a plurality of the locking devices (60), (60) are arranged on the bottom flat portion of the bottom half (B).
[0028]
The gap between the central protrusion (62) and the sandwiching protrusion (63) is gradually widened toward the protrusion tip in the portion excluding both ends, and ribs (R) from both ends of the cross section of each protrusion. Projecting opposite each other, and the distance between the tops of the ribs (R) and (R) is substantially constant from the distal end side to the proximal end of each projection.
Therefore, the electric cord (7) introduced into the box main body (1) in the above-described manner is pushed between the central projection (62) and the clamping projection (63) as shown by a two-dot chain line in FIG. Then, it is held in a state where it is difficult to slide due to the friction of this part. In particular, since it is clamped by the ribs (R) and (R), the locking action by clamping this portion is further ensured. As shown in the diagram of FIG. 9 and FIG. 10, the electric cord (7) is wound around the central protrusion (62), and the electric cord (7) is placed between the ribs (R) (R) facing each other. By press-fitting, it is possible to prevent the electric cord (7) from sliding more reliably. Accordingly, the electric cord (7) is stably held on the inner surface of the bottom half (B).
[0029]
In this embodiment, as shown in FIG. 4, the back surface of the bottom half (B) and the back side end of the tube part (6) are set on the same plane, and the tube part An annular elastic packing (64) is attached and fixed to the outer peripheral area of (6). A similar annular elastic packing (65) is attached and fixed to the peripheral edge of the back surface of the bottom half (B). Accordingly, when the box main body (1) is fixedly attached to the wall surface by means such as screwing with a mounting screw (N) passing through the through hole (M), in addition to the seal by the bushing (61), the annular body Watertightness in the cylindrical portion (6) is ensured by the elastic packing (64) (65).
[0030]
In addition, since the cylindrical portion (6) does not protrude from the back of the bottom half (B), it is sufficient that the wall surface has a hole through which the power cord or signal cord is inserted, and a large hole is made for installing a bathroom remote control. There is no need to
[Auxiliary operating body holding mechanism]
In order to achieve watertightness on the front side of the auxiliary operating bodies (1b) and (1b), as shown in FIGS. 11 to 13, the front side of the arrangement portion of the auxiliary operating bodies (1b) and (1b) is a presser sheet ( 171), but the presser sheet (171) is adhered to the front surface of the front half (A) using a double-sided adhesive tape (T). In this example, four auxiliary operating bodies (1b) and (1b) are arranged at positions corresponding to square corners as indicated by a two-dot chain line in FIG. 11, and these auxiliary operating bodies (1b) and (1b) are arranged. A flat portion is formed between the recessed portions (18) and (18) for accommodating the. The area surrounding the recesses (18) and (18) on this plane is attached in a strip shape by the double-sided adhesive tape (T), and in addition, an intermediate side portion parallel to one side is also attached in a strip shape. It is worn. Therefore, between these double-sided adhesive tapes (T), the front surface of the auxiliary operating body (1b) and the back surface of the presser sheet (171) are in a free state.
[0031]
Therefore, when the presser sheet (171) covering the surface of the auxiliary operating body (1b) is pushed by the main operating body (1a) and the switch (3) is operated, the back surface of the presser sheet (171) and the auxiliary operation body There is a certain degree of freedom of relative movement between the surface of the body (1b) and the operation feeling is good. The click feeling of the switch (3) is used as it is, and it becomes an operation feeling.
[0032]
[Actual electrical connection]
In order to connect the power cord and the signal cord in the box main body (1), as shown in FIG. 14, the size of the space (600) on the back side of the substrate (10) in the box main body (1). Is sized to accommodate the connectors (66) and (67) for connecting the cord, and one connector (67) is an external cord such as a power cord and / or a signal cord that passes through the cylindrical portion (6). (72) provided at the end of the box main body (1) side.
[0033]
Accordingly, in this case, the mounting screw (N) that is also used for joining the peripheral edge is removed, and the cylinder portion (1) is separated into the front half (A) and the bottom half (B), and the cylindrical portion (6) Attach the connector (67) to the inner end of the external cord (72) such as a power cord and / or a signal cord through which the cable is inserted, and connect this to the inner cord (71) on the front half (A) side. If it is connected to the other connector (66) attached to (), electrical connection can be made. At this time, the cords are easily entangled in the box main body (1), but at the time of the connection work, the cords are engaged by using the locking members (60) (60) on the bottom half (B) side. Workability is good because it can be stopped.
[Brief description of the drawings]
FIG. 1 is an explanatory view of a main part of a conventional example. FIG. 2 is a front view of a bathroom remote controller according to an embodiment of the invention. FIG. 3 is a rear view of a bathroom remote controller according to an embodiment of the invention. XX sectional view of the embodiment FIG. 5 is an enlarged view of the YY section of the embodiment of the present invention. FIG. 6 is a front view showing the relationship between the main operating body (1a) and the elastic plate (13). 7] Side view of the relationship between the main operating body (1a) and the elastic plate (13). [FIG. 8] Front view of the bottom half (B) of the bathroom remote control according to the embodiment of the present invention. FIG. 10 is an enlarged side view of the stopper (6). FIG. 11 is a plan view of the presser sheet (171). FIG. 12 is a double-sided adhesive tape (T). [Fig. 13] Enlarged view of the attachment structure of the presser sheet (171) [Fig. 14] Cross-sectional view of the main part showing the cord connection state in the box main body (1) [Explanation of symbols]
(1) ・ ・ ・ Box main body (32) ・ ・ ・ Light emitting part
(1a) ... Main operating body (301)
(1b) ... Auxiliary operating body (4) ... Mounting bracket
(10) ... Substrate (41) ... Support plate
(11) ・ ・ ・ Display printing layer (42) ・ ・ ・ Screw hole
(12) ・ ・ ・ Liquid crystal display (43) ・ ・ ・ Through hole
(13) ... Elastic plate (44) ... Engagement hook
(14) ... Connecting bar (5) ... Light-emitting display unit
(15) ・ ・ ・ Front plate (51) ・ ・ ・ Window plate
(16) ・ ・ ・ Flange (C ₁ ) ・ ・ ・ Connection
(17): Presser sheet (A): Front half
(18) ... Recess (B) ... Bottom half
(19) ... Key-shaped recess (101) ・ ・ First lens body
(171) ・ ・ Presser sheet (102) ・ ・ Second lens body
(172) ・ ・ Presser sheet (103) ・ ・ Recess
(21) ・ ・ ・ Cover plate (R) ・ ・ ・ Rib
(22) ... Auxiliary operation surface (6) ... Cylinder
(23) ・ ・ ・ Elastic board (61) ・ ・ ・ Bushing
(24) ... Button part (60) ... Locking tool
(25) ・ ・ ・ Opening (62) ・ ・ ・ Center protrusion
(26) ・ ・ ・ Packing (63) ・ ・ ・ Nipping protrusion
(3) ... Switch (64) ... Elastic packing
(30) ... Hidden switch (65) ... Elastic packing
(31) ・ ・ ・ Actuator (66) (67) ・ Connector
(R) ・ ・ ・ Rib (T) ・ ・ ・ Double-sided adhesive tape
(411) .. Recessed portions The same reference numerals in the drawings indicate the same or corresponding portions.

Claims (3)

In the operation panel configured to introduce the electrical cord (7) from the back of the box main body (1) and electrically connect to the board (10) including the internal electrical component group,
The box main body (1) is composed of a bottom half (B) attached to the wall surface side, and a front half (A) that covers the front side and includes an operation unit, and the bottom half (B) A space is provided between the bottom flat part of the substrate and the substrate (10), and the bottom flat part communicates the inside and outside of the bottom half (B) and introduces an electric cord (7). A portion (6) is provided, and in the cylindrical portion (6), a rubber holder for holding the electric cords (7) one by one in an inserted state is inserted and fixed in a retaining state, and the bottom half ( The bottom flat portion of B) is provided with a locking tool (60) that entangles and locks the electric cords (7) one by one in the space,
The electric cord (7) is composed of an inner cord (71) connected to the substrate (10) side and an outer cord (72) introduced into the space from outside the box main body (1). The cord (71) and the external cord (72) are detachably connected by a connector, the space is sized to accommodate the connector, and the board (10) is attached to the front half (A) side, An electrical connection structure of an operation panel, wherein the half (A) and the bottom half (B) are detachably coupled.   2. The operation panel electrical connection structure according to claim 1, wherein the board (10) is removable.   The electrical connection structure of the operation panel according to claim 1 or 2, wherein the bottom half (B) is made of a synthetic resin, and the locking tool (60) is connected to a bottom flat portion of the bottom half (B). The center protrusion (62) and the pair of sandwiching protrusions (63) (63) projecting on both sides of the center protrusion (62) standing upright from the bottom flat part, and the center protrusion (62) and the sandwiching protrusion The electrical connection structure of the operation panel, wherein the gap between (63) is set to a gap suitable for press-fitting the electric cord (7).

Images