JPH03181254A - Telephone set - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a telephone set with an improved hook lever structure.

Conventional technology Figures 4 and 5 show a conventional telephone, where 1 is the lower case of the telephone body, 2 is the middle case, 3 is the numeric keypad printed circuit board, 4 is the numeric keypad, 5 is the special key, and 6 is the main key. A printed circuit board, 7 a speaker, 8 a hook lever, and 9 an upper case.

The main printed circuit board 6 is housed in the lower case 1, and is fitted between a plurality of main printed circuit board fixing claws 2a that protrude from the middle case 2 provided above the main printed circuit board 6. The inner case 2 houses a numeric keypad 4 and special keys 5.

Further, a speaker mounting section 2b is provided on the side of the middle case 2, and a speaker 7 is mounted on the speaker mounting section 2b. A pair of hook support protrusions 1a are provided to protrude from the bottom surface. Semicircular notches 1b are formed on the upper sides of these hook support protrusions 1a, and a support shaft 8a projecting from the base end of the hook lever 8 is fitted into these notches 1b from above.

A main printed circuit board 6 is provided on the bottom surface of the hook lever 8.
A hook switch pressing portion 8b is provided to project on and off the hook switch 11 mounted above.

In a conventional telephone configured as described above, a main printed circuit board 6, an inner case 22, a numeric keypad printed circuit board 3. Numeric keypad 4. Special key 5. After installing the speaker 7 and hook lever 8, attach the upper case 9 to the lower case 1.
The upper case 9 and lower case 1 are fixed with screws, and at this time, the presser projection 9 protruding from the inner surface of the upper case 9
As shown in FIG.
A is made so that it does not come out from inside the notch 1b.

Problems to be Solved by the Invention However, in the above-mentioned conventional telephone, if the upper case 9 is attached with the support shaft 8a inserted into the notch 1b of the hook lever support portion 1a of the lower case 1 and then flipped, the hook lever 8 is removed. If there is an abnormality in the operation, as it is not possible to confirm whether the
There is a problem in that it requires work to be reassembled and a large number of man-hours are required for the assembly work.

Further, since the hook lever 8 is separated from the lower case l, there is a problem that the hook lever 8 is easily lost when the upper case 9 is removed from the lower case 1 for inspection or repair.

The present invention has been made to solve the above problems,
It is an object of the present invention to provide a telephone that can reduce the number of man-hours during assembly and maintenance, and that eliminates the risk of losing the hook lever.

Means for Solving the Problems In order to achieve the above-mentioned object, the present invention provides an inner case for attaching parts to be housed in the upper and lower cases of the main body of the telephone.
The hook lever installation includes a hook lever support protrusion that supports both ends of the spindle protruding from the base end of the hook lever, and a hook lever that locks the middle portion of the spindle. Temporary holding parts are provided respectively, and 7 levers are attached to these hook lever support protrusions and hook lever temporary holding parts before the middle case is assembled into the upper and lower cases, and the upper and lower middle cases with hook levers temporarily attached are attached. The upper case is fixed by being housed in the case.

Effect This invention allows performance inspection and operation confirmation of the hook lever to be performed before assembling the middle case into the upper and lower cases, so even if there is an abnormality in the operation of the assembly hook lever, the abnormality can be detected before the middle case is assembled into the upper and lower cases. This eliminates the need for operations such as opening the upper and lower cases again after assembly and correcting the movement of the hook lever, as required in the past.

Embodiment An embodiment of the present invention will be described in detail with reference to FIGS. Note that parts that are the same as those in the conventional system are given the same reference numerals and will be briefly described.

In the figure, 1 is the lower case of the phone body, 2 is the middle case, 3 is the numeric keypad printed circuit board, 4 is the numeric keypad, 5 is the special key, 6 is the main printed circuit board, 7 is the speaker, 8 is the hook lever, and 9 is the upper case. .

The lower case 1 houses a main printed circuit board 6 fitted between a plurality of main printed circuit board fixing claws 2a protruding from the middle case 2. A numeric keypad 4 and a special key 5 are housed inside the inner case 2, and the numeric keypad 4 and the special key 5 are connected to a main printed circuit board 6 by a connector (not shown). The speaker 7 is attached to the section 2b.

On the other hand, a part of the middle case 2 is extended to the corner side of the lower case 1 to form a hook lever mounting section 2c, and this hook lever is mounted on a pair of surfaces on the tip side stepped section 2g of the section 2c. hook support protrusions 2d are protruded at intervals.

A semicircular notch 2e is formed on the upper side of these hook support protrusions 2d.
are formed, and both ends of a support shaft 8a formed at the base end of the hook lever 8 are fitted into these notches 2e from above.

Further, between these hook lever support projections 2d, a hook lever temporary holding portion 2f is provided to protrude from the upper surface of the stepped portion 2g.

The hook lever temporary holding part 2f is composed of a pair of protrusions that protrude so as to be located on both sides of the support shaft 8a supported between the notches 2e, and the upper ends of these protrusions are hook-shaped in opposite directions. A locking portion 2b is provided protrudingly. The gap l between the tips of these locking parts 2b is the support shaft 8a of the hook lever 8.
When the middle part 8b of the support shaft 8a is pushed between these locking parts 2b from above, the hook lever temporary holding part 2f expands due to elasticity, and each of the seven hook lever temporary holding parts The hook lever 8 can be temporarily fixed between the portion 2f and the locking portion 2b.

On the other hand, a through hole 8c is opened at the base of the hook lever 8, into which one of the hook lever temporary holding parts 2f is inserted from below, and a hook switch pressing part 8b is provided protruding from the lower surface of the hook lever 8. has been done. The hook lever pressing part 8b is projected downward from the middle case 2 through an opening 21 opened in the hook lever mounting part 2b of the middle case 2, and turns on the hook switch 11 mounted on the main printed circuit board 6. , can be turned off.

Furthermore, a protrusion 21 and a rib 2k for fixing the inner case are protruded from the lower surface of the stepped portion 2g of the inner case 2.

The protrusion 2j for fixing the middle case protrudes downward from the main printed circuit board 6 through a small hole 6a opened in the main printed circuit board 6, and the tip thereof is connected upward to a boss 1d protruding from the inner bottom surface of the lower case 1. It is more inserted.

As a result, the hook switch 11 attached to the main printed circuit board 6 is vertically positioned between the boss 1d and the rib 2b, and the protrusion 2 for fixing the inner case
j is used to position the hook switch 11 in the front, rear, left and right directions.

Next, to explain the operation when assembling the telephone configured as described above, when assembling the middle case 2 into the lower case 1,
In advance, the intermediate portion 8b of the support shaft 8a of the hook lever 8 is pushed from above between the hook lever temporary holding portions 2f to temporarily fix the book lever 8 to the middle case 2. This allows all parts such as the numeric keypad printed circuit board 3, numeric keypad 4, special keys 5, speaker 7, and hook key 8 to be attached to the inner case 2 in advance.

Furthermore, by rotating the hook lever 8 around the support shaft 8a in this state, the operating state of the hook lever 8 can also be confirmed in advance.

Next, store the middle case 2 in the lower case 1, and
Once fixed, cover the lower case 1 with the upper case 9.
As shown in FIG. 3, the presser projection 9a protruding from the inner surface of the upper case 9 closes the notch 2e of the seven lever support projections 2d from above, thereby preventing the support shaft 8a from being pulled out from the notch 2e. It becomes like this.

Also, in this state, the upper part of the hook lever 8 protrudes upward from the opening 9b of the upper case 9, so that by pressing the upper part of the hook lever 8, the hook switch 11 mounted on the main printed circuit board 6 can be removed. can be turned on and off using the hook switch pressing part 8b.

Effects of the Invention As described in detail above, the present invention provides a hook lever attachment part in the middle case, and the hook lever is temporarily attached to this hook lever attachment part in advance, so that the inside of the upper case and the lower case can be easily attached. All parts to be assembled into the inner case can be attached to the inner case.

This makes automatic inspection easier because performance tests and hook lever operations can be performed with all parts attached to the middle case, and the middle case that has been inspected is placed inside the upper and lower cases, and the upper and lower cases are screwed together. Since the assembly is completed by doing this, the number of man-hours required for assembly can be significantly reduced.

In particular, since the operation of the hook lever can be inspected before it is assembled into the upper and lower cases, if an abnormality is found in the operation, the abnormality can be detected without the need to open the upper and lower cases, make adjustments, and then reassemble. It is possible to reduce the number of man-hours required for adjustment, and at the same time, the cases and screws are not damaged, so there is no deterioration in quality.

Furthermore, even if the upper case is opened for inspection or repair, the hook lever does not separate, which eliminates problems such as losing the 7-piece lever.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a telephone according to an embodiment of the present invention with the top case removed, FIGS. 2 and 3 are cross-sectional views of the vicinity of the hook lever with the top case covered, and FIG. FIG. 5 is a perspective view of a conventional telephone with the upper case removed, and FIG. 5 is a cross-sectional view of the vicinity of the hook lever with the case covered. 1...Lower case, 2...Middle case, 2b...Hook lever mounting part, 2d...Hook lever support protrusion,
2f...Hook lever temporary holding part, 3...Numeric keypad printed circuit board, 4...Numeric keypad 5...Special key 6
...Main printed circuit board, 7...Speaker, 8...
・Fuffre...Spindle, ...middle part.

Claims (1)

[Claims] A hook lever attachment part is provided in the inner case to which parts are attached to be housed in the upper and lower cases of the telephone body, and a hook that supports both ends of a support shaft protruding from the base end of the hook lever is provided in the hook lever attachment part. A lever support protrusion and a hook lever temporary holding part that locks the middle part of the support shaft are provided respectively, and the hook lever is attached to these hook lever support protrusion and hook lever temporary holding part before assembling the middle case into the upper and lower cases. and the above-mentioned middle case to which the hook lever is temporarily attached is accommodated in the upper and lower cases to fix the space between the upper and lower cases.