JPH0746998Y2 - Bearing structure of hook button - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a bearing structure of a hook button for pressing a switch mounted on an electronic device.

(Prior Art) A handset mechanism for pressing a switch mounted on a printed wiring board in a housing of an electronic device with a hook button from an upper surface of a cover covering the printed wiring board is conventionally shown in FIGS. 3 and 4. It was configured as shown. In FIG. 3, a switch 2 is mounted on the printed wiring board 1, and a cover 4 is attached to the upper portion of the printed wiring board 1 via fixing screws 3. An opening 5 is formed in the cover 4 at the position where the switch 2 is arranged, and a hook button 6 is movably arranged in the opening 5. The hook button 6 is pivotally supported by a pair of extending arms 7, and a support shaft 8 is attached to each end of the arms 7. Further, a pair of ribs 9 are integrally formed on the lower surface of the cover 4, and the support shafts 8 are rotatably supported in round hole-shaped bearing holes 10 provided at the lower ends of the ribs 9. Has been done. The fitting of the support shaft 8 into the bearing hole 10 is performed by bending the rib 9 or the arm 7. A pressing portion 6a is formed on the lower surface of the hook button 6 so as to project therefrom, and engages with the lever 11 of the switch 2. However, according to the above-described conventional bearing structure, the bearing hole 10 formed in the rib 9
Since is a round hole, the mold for forming this round hole is a slidable movable mold, and a sufficient space for sliding the mold must be provided around the mold,
Moreover, there is a problem that the cost of the mold becomes high.

Further, in manufacturing, when the bearing hole 10 of the rib 9 is formed larger than the diameter of the support shaft 8, rattling occurs when the hook button 6 is rotated, so that the operating point of the printed wiring board 1 with respect to the switch 2 is changed. The problem that the switch 2 cannot be turned off by the hook button 6 has occurred.

(Problems to be Solved by the Invention) Since the bearing hole for rotatably supporting the hook button is a round hole, which is a problem in the conventional hook button bearing structure, the present invention forms this round hole. The problem is that the mold has a sliding structure, the cost of the mold is high, and there is a sufficient space around the mold to slide the mold. With the object of providing a bearing structure for a hook button that can form the bearing hole without the need for manufacturing,
Even when the rib bearing hole is formed larger than the diameter of the support shaft, rattling can be prevented when the hook button is rotated, and when the hook button is pressed, the operating point for the switch on the wiring board does not change and it is more reliable. It is an object of the present invention to provide a hook button bearing structure capable of pressing a switch and further facilitating assembly.

[Means for Solving the Problems] (Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention enables the electronic device housing to be pivotable via a support shaft by a rib whose one end is fixed. In a bearing structure of a hook button that is supported and arranged to press a switch mounted on a wiring board when pressed, a hook button pivotally supported by an arm of a predetermined length and a U-shaped groove at the other end. A hook and a fixing plate on which a switch is provided at a distance from the engagement hole corresponding to the length of the arm. The shaft of the button is engaged with the U-shaped groove,
When the fixing plate is fixed to the housing of the electronic device so that the other end of the rib fits into the engaging hole, the hook button is attached to the housing of the electronic device while the support shaft is sandwiched between the U-shaped groove and the fixing plate. It is designed to be attached to.

(Operation) According to the structure described above, the bearing that supports the support shaft of the hook button is formed by fitting the other end of the rib provided with the U-shaped groove into the engaging hole of the fixing plate. In order to form the U-shaped groove, a mold slide structure is not necessary, the cost of the mold is reduced, and a space for sliding the mold is not needed.

Also, in manufacturing, even if the rib bearing hole is formed larger than the diameter of the support shaft, it is possible to prevent rattling when the hook button is rotated, and when the hook button is pressed, the operating point for the switch on the wiring board It is possible to press the switch more reliably without changing.

Further, if the fixing plate is fixed to the electronic device casing so that the support shaft of the hook button engages with the U-shaped groove and the other end of the rib fits into the engagement hole, the hook button becomes the U-shaped groove. The support plate is clamped by the fixing plate, and therefore can be easily mounted.

(Embodiment) An embodiment of a hook button bearing structure according to the present invention will be described below with reference to the drawings.

1 and 2 show an embodiment of the present invention. In the figure, the same or equivalent parts as those of the conventional example shown in FIGS. 3 and 4 are designated by the same reference numerals and the description thereof will be omitted. The feature of this embodiment resides in the bearing structure that supports the support shaft 8 of the hook button 6. The lower ends of the pair of ribs 9 attached to the lower surface of the cover 4 are fitted into the pair of engagement holes 12 formed in the printed wiring board 1. The printed wiring board 1 of these ribs 9
A U-shaped groove 13 is formed at the end on the side. Reference numeral 14 shown in FIG. 2 is a mounting hole that penetrates the fixing screw 3 for mounting the cover 4 on the printed wiring board 1, reference numeral 15 is a terminal of the switch 2, and reference numeral 16 is a switch 2 mounted on the printed wiring board 1. It is a locking member. Further, in this embodiment, the pair of arms 7 connected to the hook button 6 are integrally connected to the opposite side of the hook button 6 by a connecting plate 17, and the support shafts 8 are attached to both sides of the tip of the connecting plate 17. Has been. These support shafts 8 are rotatably supported by bearings formed by the U-shaped groove 13 formed in the rib 9 and the printed wiring board 1.

Next, the procedure for attaching the hook button 6 according to this embodiment will be described. The hook button 6 is fitted into the opening 5 of the cover 4, and the support shaft 8 attached to the connecting plate at the tip of the arm 7 is attached to the cover 4.
After engaging with the U-shaped groove 13 of the rib 9 attached to, the printed wiring board 1 having the switch 2 attached to the cover 4 is fixed with the fixing screw 3. At this time, the lower ends of the ribs 9 are fitted into the engaging holes 12 formed in the printed wiring board 1 to form a bearing that supports the support shaft 8 together with the U-shaped groove 13.

According to this embodiment, since the U-shaped groove 13 may be formed in the rib 9 by a normal die, it is not necessary to use a die having a slide structure as in the case of forming a round hole, and the die is Since it is not necessary to provide a large space around the mold, and the mold structure is simplified, the cost can be reduced. Also, one-way assembly is possible, which facilitates automation of assembly,
Moreover, the number of parts does not increase.

[Advantages of the Invention] As described above, according to the present invention, the bearing for rotatably supporting the hook button is formed with a U-shaped groove in the rib fixed to the cover, and the U-shaped groove and the printed wiring board are formed. Since it is formed by using, it is not necessary to make the mold for forming the bearing into a slide structure, the structure of the mold becomes simple, and the cost can be reduced.

Also, in manufacturing, even if the rib bearing hole is formed larger than the diameter of the support shaft, it is possible to prevent rattling when the hook button is rotated, and when the hook button is pressed, the operating point for the switch on the wiring board It is possible to press the switch more reliably without changing.

Further, if the fixing plate is fixed to the electronic device casing so that the support shaft of the hook button engages with the U-shaped groove and the other end of the rib fits into the engagement hole, the hook button becomes the U-shaped groove. The support plate is clamped by the fixing plate, and therefore can be easily mounted.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of a hook button bearing structure according to the present invention, FIG. 2 is an exploded perspective view of the hook button bearing structure seen from the lower surface of FIG. 1, and FIG. 3 is a conventional hook button bearing structure. And FIG. 4 is a perspective view of a main part of FIG. 1 ... Printed wiring board, 2 ... Switch 4 ... Cover, 5 ... Opening 6 ... Hook button, 8 ... Spindle 9 ... Rib, 13 ... U-shaped groove

Claims (1)

[Scope of utility model registration request] 1. An electronic device housing is rotatably supported by a rib having one end fixed to it via a support shaft, and is arranged so as to press a switch mounted on a wiring board when pressed. In the hook button bearing structure, a hook button axially supported by an arm of a predetermined length, a rib having a U-shaped groove at the other end, and an engagement hole into which the other end of the rib can be fitted. A fixed plate provided with the switch at a distance corresponding to the length of the arm from the engagement hole, and the support shaft of the hook button is engaged with the U-shaped groove, When the fixing plate is fixed to the electronic device casing so that the other end fits into the engaging hole, the hook button is held in a state in which the support shaft is clamped by the U-shaped groove and the fixing plate. Hook button characterized by being attached to the electronic device housing Bearing structure.