JPH0645388U - Panel instrument - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose is to realize a panel instrument that prevents breakage of the cable by devising a way to route the flat cable. According to the present invention, a first printed circuit board having a light emitting element is mounted on a back surface of a panel cover in a plane direction, and a cable is connected to a panel cover surface side of the first printed circuit board. Is an improvement of the panel instrument that connects the second printed circuit board on the side opposite to the panel cover surface side of the first printed circuit board. This device is provided on the panel cover side of the first printed circuit board, has a hole for guiding the cable in the thickness direction with respect to the first printed circuit board, and separates the space between the light emitting element and the first printed circuit board. A constant spacer, and a guide plate provided on the back surface of the panel cover, extending toward the inside of the instrument, and guiding the cable guided by the hole of the spacer into the panel cover. It is a panel instrument that does.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a panel instrument that prevents a cable from breaking.

[0002]

[Prior art]

 The panel cover 2 of the panel instrument is shown in FIG. The panel cover 2 exposes LEDs, 7seg LEDs (7-segment LEDs), switches, etc. on the panel surface. These LEDs, 7segLEDs, switches, etc. are mounted on the first printed board.

FIG. 3 shows a schematic exploded perspective view of a panel instrument. In the figure, reference numeral 1 is a housing of a panel instrument, 2 is a panel cover coupled to the housing 1, 3 is a first printed circuit board on which LEDs, 7seg LEDs, switches and the like are mounted, and the surface direction is aligned with the back surface of the panel cover 2. Be installed. A flat cable 4 connects the first printed board 3 and the second printed board 5. The connection position of the flat cable 4 to the first printed circuit board 3 is on the panel surface side. A flat cable 6 connects the second printed circuit board 5 and the third printed circuit board 7. The two printed boards 5 and 7 are housed in the housing 1 in an upright state. Reference numeral 21 denotes a holding portion which is provided on the panel cover 2 and holds the second printed circuit board 5 and the third printed circuit board 7.

The assembly operation will be described below. The first printed circuit board 3 is coupled to a latch (not shown) of the panel cover 2. Then, the second printed circuit board 5 and the third printed circuit board 7 are held by the holding section 21. The panel cover 2 is joined to the housing 1. At that time, the second printed circuit board 5 and the third printed circuit board 7 are connected to a connector (not shown) provided on the housing 1.

FIG. 4 is a cross-sectional view of the essential parts of a conventional panel instrument. Hereinafter, the same parts as those in FIG. 3 are designated by the same reference numerals. In the figure, 30 is a hole provided in the first printed circuit board 3 for inserting the flat cable 4 and electrically connecting by soldering, 31 is a spacer provided in the first printed circuit board 3, 32 is a 7 seg LED Then, it is provided on the first print substrate 3 via the spacer 31. Reference numeral 211 denotes a groove portion into which the third printed circuit board 7 is inserted and held.

The assembly operation for connecting the printed circuit board to the panel cover 2 will be described below. The first printed circuit board 3 is joined to the panel cover 2. As a result, the curved portion 4a of the flat cable 4 is formed near the soldering of the first print substrate 3. Then, the third printed circuit board 7 is inserted into the groove portion 211 of the holding portion 21 and held. As a result, the flat cable 4 is pushed toward the first printed board 3. As a result, in the flat cable 4, the curved portion 4b is formed by the first printed board 3 and the third printed board 7.

[0007]

[Problems to be solved by the device]

 In the case of such a configuration, the curved portion 4b may project from the panel cover 2. In this case, when the panel cover 2 is attached to the housing, the flat cable 4 is sandwiched between the housing and the panel cover 2 and the cable is broken. In addition, there is a problem that stress is applied to the soldering portion of the flat cable 4 due to the curved portion 4a, and the flat cable 4 is disconnected from the first printed board 3.

An object of the present invention is to realize a panel instrument which prevents breakage of the cable by devising a way of routing the cable.

[0009]

[Means for Solving the Problems]

 According to the present invention, a first printed circuit board having a light emitting element is mounted on the back surface of a panel cover with their surface directions aligned, and a cable is connected to the panel cover surface side of the first printed circuit board. A panel instrument for connecting to a second printed circuit board on the side opposite to the panel cover side of the first printed circuit board, wherein the cable is provided on the panel cover side of the first printed circuit board and connected to the first printed circuit board. On the other hand, a spacer that has a hole for guiding in the thickness direction to keep the distance between the light emitting element and the first printed circuit board constant, and is provided on the back surface of the panel cover and extends toward the inside of the instrument. A guide plate for guiding the cable guided by the hole of the spacer into the panel cover.

[0010]

[Action]

 In this invention, the cable is guided vertically to the first printed circuit board by passing through the hole of the spacer. The guide plate provided on the panel cover guides the cable so that it does not come out of the panel cover.

[0011]

【Example】

 The present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of the essential parts showing an embodiment of the present invention. In the figure, 8 is a spacer, which is provided on the panel cover 2 side of the first printed circuit board 3 and has a hole 81 for guiding the flat cable 4 in the thickness direction with respect to the first printed circuit board 3. The interval between the 7seg LED 32 and the first printed circuit board 3 is kept constant. A guide plate 9 is provided on the back surface of the panel cover 2 and extends toward the inside of the instrument. The guide plate 9 guides the flat cable 4 guided by the hole 81 of the spacer 8 into the panel cover 2. A cable guide 22 is provided on the back surface of the panel cover 2. The cable guide 22 bends the first printed circuit board 4 on the back surface of the panel cover 2 and guides it to the guide plate 9.

The procedure for assembling such a device will be described below. The 7-seg LED 32 is attached to the first printed circuit board 3 via the spacer 8. One end of the flat cable 4 is soldered to the first printed board 3 through the hole 30 of the first printed board 3 and the hole 81 of the spacer 8. The flat cable 4 is connected to a second printed circuit board (not shown), and the first printed circuit board 3 is attached to the panel cover 2. At this time, the flat cable 4 is set in the gap direction between the first printed circuit board 3 and the panel cover 2 by the cable guide 22, and the panel cover 2 guides the cable in the depth direction. As a result, the curved portion 4c is formed in the flat cable 4. At this time, the stress on the soldered portion of the flat cable 4 is reduced because the flat cable 4 is guided by the hole 81. This prevents the flat cable 4 from breaking due to stress. Then, the third printed circuit board 7 is inserted into the groove portion 211 of the holding portion 21 and held. At this time, the third printed circuit board 7 forms the curved portion 4d by pushing the flat cable 4 toward the first printed circuit board 3. The guide plate 9 guides the curved portion 4d so as not to project from the panel cover 2. In this way, the flat cable 4 is guided by the hole 81 of the spacer 8 so that stress does not occur in the soldered portion, and the flat cable 4 does not protrude from the panel cover by the guide plate 9, so that the flat cable is formed. No need to process.

[0013]

[Effect of device]

 The present invention has the following effects. By providing the guide plate, the flat cable does not protrude from the panel cover, so the flat cable is not pinched between the housing and the panel cover during assembly. Since the spacer is provided with holes to guide the flat cable, stress is not applied to the soldering part of the flat cable. The flat cable is guided by the holes of the spacer so that stress does not occur in the soldered portion, and the flat cable does not protrude from the panel cover by the guide plate, so there is no need to form the flat cable.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a main part configuration showing an embodiment of the present invention.

FIG. 2 is a view showing a panel cover of a panel instrument.

FIG. 3 shows a schematic exploded perspective view of a panel instrument.

FIG. 4 is a cross-sectional view of a main part configuration of a conventional panel instrument.

[Explanation of symbols]

 2 panel cover 3 first printed circuit board 4 flat cable 5 second printed circuit board 7 third printed circuit board 8 spacer 9 guide plate 32 7 segLED 81 hole

Claims (1)

[Scope of utility model registration request] 1. A first printed circuit board having a light emitting element is mounted on a back surface of a panel cover in a plane direction,
A panel instrument in which a cable is connected to the panel cover surface side of the first printed circuit board and the cable is connected to a second printed circuit board on the side opposite to the panel cover surface side of the first printed circuit board, It is provided on the panel cover side of the printed circuit board of
A spacer that has a hole for guiding the cable in the thickness direction with respect to the first printed circuit board and that keeps a constant distance between the light emitting element and the first printed circuit board; And a guide plate that extends toward the inside of the panel and guides the cable guided by the hole of the spacer into the panel cover.