JPH0336133Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a buffer mechanism for a hanger arm of a public telephone.

[Conventional technology]

The hanger arm of a public telephone is used to hold the handset, and when the handset is removed during a call, the spring force of the arm return spring rotates it back to the upper position, and after the call is over, the handset is hung back. It is configured so that when it is lifted, it rotates downward due to its weight and is locked in a lower position. When the hanger arm rotates, the hook switch bracket operates in conjunction with the rotation, and the hook switch and the flapper mechanism of the coin sorting device are controlled to open and close. In this case, when the switch is released from being pressed by the switch bracket during a call, it becomes ON, and when the call ends, it is pressed again and returns to the OFF state. Further, the flapper mechanism is configured to close a flapper forming a coin sorting track by being released from the bracket during a call, and to open the flapper by being pressed by the bracket at the end of a call.

[Problem that the invention attempts to solve]

In this way, the hook switch bracket operates in conjunction with the rotation of the hanger arm when the transmitter is attached or detached from the hanger arm, and controls the opening and closing of the hook switch and the flapper mechanism, but excessive force is not applied to the hanger arm. When this happens, there is a problem in that this acts on the hook switch and flapper mechanism through the bracket, damaging them. Therefore, it is required to incorporate some kind of buffer mechanism into the hanger arm. Furthermore, if the distance between the foot switch bracket and the foot switch and flapper mechanism becomes too narrow due to dimensional errors during assembly, the result will be essentially the same as applying excessive force; In this case, the rotation angle of the movable piece was small, so there was a problem that the movable piece could not be operated accurately.

[Means for solving problems]

The shock absorbing mechanism for the hanger arm of a public telephone according to the present invention was developed in order to solve the above-mentioned problems, and the hanger arm and the operating member are rotatably supported by a hanger shaft, and the hanger arm is attached to the hanger arm. A spring for arm return provides a return habit, a buffer spring presses the operating member against the hanger arm, and a hook switch bracket that operates the flapper mechanism is interlocked with the operating member, and a shaft that pivotally supports this bracket. It is constructed by interposing a torsion spring to control the opening and closing of the switch.

[Effect]

In the present invention, the hanger shaft incorporates an operating member that transmits the rotation of the hanger arm to the hook switch bracket, and a buffer spring that presses this against the hanger arm, and the hook switch is operated by the torsion spring. , these springs effectively absorb excessive force and impact force applied to the hanger arm.

〔Example〕

Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

FIG. 1 is a partially cutaway perspective view showing an embodiment of a buffer mechanism for a hanger arm according to the present invention, and FIG. 2 is a plan view of a main part of the mechanism. In these figures,
1 is a telephone housing of a public telephone; 2 is a bracket fixed to the left end of the inner surface of the back plate 1A of this housing 1 by means such as welding or a set screw; and 3 is a bracket fixed to the left end of this bracket 2. A hanger shaft 4 is disposed horizontally between the first and second arm portions 2a and 2b provided, and 4 is a hanger arm disposed along the surface of the left side plate 1B of the housing 1. The end portion 4A is inserted into the housing 1 through the arm insertion hole 5 provided in the left side plate 1B, and integrally has a U-shaped bracket 6, which is vertically moved by the hanger shaft 3. It is pivoted so that it can rotate freely in the direction. On the other hand, a holding part 8 for holding a transmitter/receiver 7 is provided at the tip of the hanger arm 4. The hanger arm 4 has the transmitter/receiver 7 attached to the holding part 8
When the transmitter/receiver 7 is removed from the holder 8, it rotates upward by the force of the arm return spring 9 and comes into contact with the upper limit stopper 10 provided on the arm 2a. The lower limit stopper 11 of the arm portion 2a rotates downward due to its weight.
It comes into contact with and is locked. The upper end of the arm return spring 9, which gives the hanger arm 4 a return habit, is engaged with a spring locking portion 12 provided at the rear end of one arm 6a of the bracket 6, and the lower end is engaged with the lower end of the bracket 2. It is locked by a provided spring locking part (not shown).

Reference numeral 13 denotes an actuating member rotatably supported by the hanger shaft 3. This actuating member 13 is formed in a substantially U-shape, is located inside the bracket 6, and is interposed between the hanger shaft 3. The provided buffer spring 14 gives the hanger arm 4 the ability to rotate in the opposite direction, that is, in the direction of arrow A in FIG. It is pressed against the upper surface of the other arm 6b of the bracket 6. Therefore, the actuating member 13 normally rotates integrally with the hanger arm 4, and the actuating member 13 and the hook switch bracket 16 are operatively connected by a connecting rod 18. The switch bracket 16 is
It is rotatably supported by a shaft 17 formed in a U-shape and suspended horizontally between the second and third arm portions 2b and 2c of the bracket 2, and its left side plate 16a is attached to the right side of the actuating member 13. It is located above the rear end of the plate 13a and is connected by the connecting rod 18. On the other hand, the right side plate 16 of the switch bracket 16
At the tip of b, a roller 21 is provided as an operating part for operating an operating lever 20 constituting a flapper mechanism (not shown) of a conventionally known coin sorting device (Example Publication No. 61-45582). . This roller 21 is located apart above the operating lever 20 during a call, and when the call ends, the handset 7
is hooked back onto the holding part 8 of the hanger arm 4 and the arm 4 rotates downward, and accordingly, the actuating member 13
rotate the switch bracket 16 to the first position.
It is configured to descend and press the actuating lever 20 in order to rotate it counterclockwise in the figure. Then, the operating lever 20 rotates by a predetermined angle clockwise in FIG. 1 about the rotation shaft 22, opening a flapper (not shown) of the coin sorting device. Therefore, if coins are inserted into the coin slot in this state, they will fall from the coin sorting track to the return track and all will be returned to the return slot.

A spring locking piece 25 is integrally provided vertically at the longitudinal center of the foot switch bracket 16 in correspondence with the foot switch 24, and a V-shaped spring locking portion 25a is provided at the lower end of the spring locking piece 25. . A torsion spring 26 for controlling the opening and closing of the hook switch 24 is interposed in the shaft 17, and one end of the torsion spring 26a extends downward, and the middle part thereof is inserted into the spring locking part 25a from the front. The bent portion 126 at the lower end forms a switch operating portion for rotating the operating piece 24A of the hook switch 24. This switch operation part 1
When the transmitter/receiver 7 is hooked back onto the hanger arm 4, the actuating piece 24A is moved rearward with the rotation of the switch bracket 16, and the actuating piece 24A is attached to its spring 2.
8, and the switch 24 is closed. At this time, the switch bracket 16 continues to rotate, albeit at a small angle, even after the switch operating portion 126 has completely pushed the operating piece 24A, so the spring locking portion 2
5a is separated from the one end straight portion 26a of the torsion spring 26. When the transmitter/receiver 7 is removed from the hanger arm 4 from this state, the hook switch bracket 16 rotates clockwise in FIG. While holding the straight portion 26a at one end of the spring 26, the actuating piece 24
Separate from A. Therefore, the actuating piece 24A is rotated back forward by the force of the spring 28, opening the hook switch 24.

Note that the other end straight portion (not shown) of the torsion spring 26 is connected to the hook switch bracket 1.
The front end surface of 6 is press-fitted and locked. 30 is a printed circuit board.

Thus, in the buffer mechanism for the hanger arm 4 having such a configuration, the hanger shaft 3
The operating member 13 rotatably supported by the lever is pressed against the bracket 6 of the hanger arm 4 by the buffer spring 14, so that the operating member 13 and the hook switch bracket 16 are operated in conjunction with each other. Therefore, when an excessive force or impact force is applied to the hanger arm 4, the force is absorbed and relaxed by the spring 14, thereby protecting the flapper mechanism. Therefore, no large force is applied to the flapper mechanism, thereby preventing its failure or damage. In addition, if the flapper mechanism does not open due to a coin jam, etc., the operating lever 20
1, preventing the switch bracket 16 and the actuating member 13 from rotating. At this time, the hanger arm 4 rotates downward against the return spring 9 independently of the actuating member 13 due to the unhooking operation of the transmitter/receiver 7. Therefore, the force applied to the hanger arm 4 at this time is applied to the actuating member 1.
3 and the foot switch bracket 16 to the flapper mechanism.

Furthermore, since the torsion spring 26 controls the opening and closing of the hook switch 24, if an excessive force or impact force is applied to the hanger arm 4, the spring 26 effectively absorbs the force and opens and closes the hook switch 24. Prevent damage, failure, etc. Furthermore, even if the hook switch 24 does not operate accurately due to dimensional errors during assembly or manufacturing errors in parts, the linear portion 26a at one end of the torsion spring 26 can be bent back and forth.
6a switch operation section 126 and switch 2
The relative positional relationship with the actuating piece 24A of No. 4 can be easily and accurately set, and the above-mentioned dimensional error can be absorbed.

[Effect of idea]

As described above, according to the shock absorbing mechanism for the hanger arm of a public telephone according to the present invention, there is provided a rotatable actuating member between the hanger arm and the hook switch bracket, and a shock absorbing mechanism that presses the actuating member against the hanger arm. A spring is arranged to operate the hook switch bracket in conjunction with the operating member, so the flapper mechanism can be protected from excessive force and impact force applied to the hanger arm, and damage to the flap mechanism can be prevented. do. In addition, a torsion spring is interposed in the rotational fulcrum that supports the foot switch bracket, and this controls the opening and closing of the foot switch.
It has a great shock absorption effect and protects the hook switch from excessive force and impact applied to the hanger arm.
Further, the structure is simple, and assembly errors can be easily dealt with, and the hook switch can be operated reliably.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view showing an embodiment of a buffer mechanism for a hanger arm according to the present invention, and FIG. 2 is a plan view of the main part. 1...Telephone case, 2...Bracket, 3...
Hanger shaft, 4...hanger arm, 9...
...Arm return spring, 13...Operating member,
14... Buffer spring, 16... Hook switch bracket, 17... Shaft, 18... Connection rod,
20... Actuation lever, 21... Roller, 24...
Foot switch, 26...Torsion spring.

Claims (1)

[Scope of utility model registration request] A hanger arm and an actuating member each rotatably supported by a hanger shaft, an arm return spring that gives the hanger arm an upward return habit, and a spring for returning the arm to the actuating member in a direction opposite to that of the hanger arm. a buffer spring that imparts a rotational habit and presses the operating member against the hanger arm; and a hook switch bracket that rotates in conjunction with the operating member and has an operating section that operates the flapper mechanism of the coin sorting device; A shock absorbing mechanism for a hanger arm of a public telephone set, comprising a torsion spring that is interposed on the shaft of the switch bracket and controls opening and closing of the switch as the bracket rotates.