JPH0226428B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION This invention relates to telephones, and more particularly to improved housing structures and line connect/disconnect switches.

[Prior Art] In a typical telephone, when the handset is removed from the hook, a switch is activated to connect the line. Calls can then be made via this line.

One of the most advanced improvements made to telephones was the
There are handsets with built-in circuits and dials. Such a handset can operate independently of the cradle or in conjunction with the cradle. Some require a button to be pressed in order to receive an incoming call. In addition, some devices are configured so that when the weight of the handset acts on a flat hard surface, a line switch is activated and the line is cut off. Phones that use this type of line cutoff system can unintentionally end a call by placing the handset on a hard surface during a call, or if the handset rests on the corner of a slip, for example, the line switch will not work. Therefore, even if you intend to end the call, you may not actually be able to end the call.

For example, since users use both hands while talking, they often have to take the handset off the phone without ending the call. There may be times when it is desired to disconnect the line without returning the handset to the cradle. An example of this is a hospital bed telephone that does not have to worry about the line being cut off against one's intention, or conversely not being cut off. In short, we need to create a telephone that connects or disconnects lines according to the user's intentions. This demand can be met by connecting/disconnecting the line using a manual switch. However, the switch must operate only when the user intends to do so. It must not operate in response to a mechanical load or a handset simply by placing it down. However, intentional manual activation is not sufficient.
This is because, in some cases, it may be necessary to be able to disconnect the line simply by placing the device on a "cradle."

Any phone can be subject to fairly rough handling under normal circumstances, and it's not uncommon for it to be dropped, for example. It is also desired that telephones be low cost, easy to manufacture and assemble, and have flexibility to accommodate a variety of environments.

[Problems to be Solved by the Invention] The present invention seeks to provide an improved telephone set in which a handset for receiving telephone information, a transmitter for transmitting telephone information, and a housing for housing related circuitry are incorporated into the handset. It is something to do.

SUMMARY OF THE INVENTION The housing can also accommodate telephone number dialing components, such as key pads and switch boards. Additionally, the handset also includes a manual on/off switch that controls connection and disconnection from the telephone line.
This switch is operated by the telephone user's intentional operation, unlike a system in which connection and disconnection are performed by removing the handset from the hook and returning it to the hook. In other words, an on-off switch requires user intent and conscious actuation by the user through direct contact with a finger or thumb. The housing is also equipped with an automatic line cutoff switch, which is turned off as soon as the line is connected.
When the handset is placed in the cradle and touches the finger, this switch cuts off the line.

In the preferred embodiment, the automatic line disconnect switch and the on/off switch turn off the automatic line disconnect switch when the on/off switch is turned "on," and turn off the on/off switch when the automatic line disconnect switch is triggered. via a link that returns the switch to the "off" position.

One embodiment of the present invention provides a thumb-button, sliding, movable on/off switch.

The slide includes a protrusion including a step forming a stepped abutment surface. This contact surface is substantially aligned with the direction of movement of the on/off switch and has a step in a direction perpendicular to the direction of movement. A link is pivotally connected to the housing between the on-off switch and the automatic line disconnect switch, with its first arm interlocking with the on-off switch via a compression spring. As the on-off switch moves toward the "on" position, the force transmitted by the spring acts to rotate the link; as the link rotates in the opposite direction, the spring causes the on-off switch to rotate. Try to move it to the "off" position. A pawl is formed on this link, which faces the step and engages the surface of the step near the pawl, while the on-off switch moves from the "off" position to the "on" position. Prevent link rotation. In the "on" position, the pawl faces the other distal surface of the step, creating a space that allows rotation of the link until the pawl engages this surface. A spring provides free movement between the on/off switch and the link. When the on-off switch returns from the "on" position to the "off" position, the pawl engages the other surface and rotates the link. The link preferably interfaces through a pin/slot joint with an automatic line disconnect switch, which is movable within the housing.
The automatic line disconnect switch can be moved from the locked position to the "off" position by rotating the link and disengaging the pawl from the far side of the step, thereby releasing the on-off switch under spring force. A corresponding movement to the "off" position allows the link to press the pawl against said other surface. The relationship between the pawl, on/off switch, and automatic disconnect switch provides resistance to mechanical forces. If the on-off switch is "on", the on-off switch will be "off" if the link does not rotate.
It cannot be. The automatic line cutoff switch is turned on and off due to the acceleration of trying to move it in the same direction.
An inertial load is created that tends to move the off switch to the "off" position, preventing unintentional switching to the "off" position. If the on-off switch is "off", movement to "on" is also prevented by the automatic line disconnect switch.

A spring interposed between the link and the on/off switch transmits the force necessary to rotate the link and trip the automatic line disconnect switch, but it will not turn on or off when the automatic line disconnect switch is tripped. -Also serves the function of returning the switch to the "off" position. Since variations in spring force are self-correcting, spring manufacturing precision is not required. The blade contacts of the circuit are controlled by on/off switches, which determine whether the circuit is connected or disconnected. on/off/
During the initial movement of the switch toward the "on" position, the spring force of the blade contact connects the link and turns it on.
The on switch resists the spring force between the off switch and the on switch.
Reduces the initial force required to actuate the off switch.

Preferably, the handset includes a housing consisting of a pair of upper and lower shells having finger grips on each side. The lower shell has a recess and a bottom plate, the bottom plate supporting a key pad and a switch board;
It has a recessed portion that accommodates these two elements.
An automatic line disconnect switch occupies a position spaced from the recessed portion to allow access of the switch to the member that triggers it. The finger grip/shell assembly is held together by fasteners between the shells that position the grip through cooperating overlapping lips. The cover hides the recess and defines the transmitter housing. It includes a protrusion that cooperates with fasteners on the cover or upper shell to secure the cover while clamping both shells at this end of the assembly.

[Example] Fig. 1 shows a transmitter/receiver 10 and a cradle 1 for receiving it.
2 shows an improved telephone set consisting of two parts. The handset includes an upper shell 14, a lower shell 16, and a handset finger grip 17, with a complementary opposing finger grip on the other side of the handset. The pedestal includes a lower shell 18 and an upper shell 20.

To explain in more detail with reference to FIG. 2, the handset 10 includes an upper shell 14 and a lower shell 16 coupled to each other via fasteners 22, 24 (FIG. 3).
A cover 26 is attached to the lower shell 16, and as is clear from FIG. 3, the fastener 24 inserted into the bottom plate 30 of the recess 28 is hidden by this cover. The fastener 24 is attached to the sleeve 32 (second
) and is threadedly engaged with the thread of a fastener threading projection 34 hanging down from the top wall 36 of the upper shell. Fastener 22 has its head in a recess 38 formed in the upper surface of upper shell top wall 36 and threads from this support through sleeve 40 into threaded projection 42 of cover 26.

The handset includes a standard printed circuit for making and receiving calls mounted on a printed circuit board 44 and associated electronic circuitry. In particular, as is clear from Figure 3,
Keypad 48 has its own printed circuit switch board 50 which cooperates with circuitry on circuit board 44 (via soldered flat ribbon cables) to indicate which keys are being pressed.

A transmitter housing 52 formed between cover 26 and bottom plate 30 accommodates a standard transmitter. The handset 54 is housed in a handset housing 56, and includes a handset mounting collar 58, and fasteners 60 that fit into the fastener threading protrusions 64 and 66, respectively.
62.

The upper shell 20 of the pedestal 12 has four fasteners 6.
8 to the lower shell 18. This fastener also has the function of fixing the cover plate 70 to the lower shell. The cover plate also serves as a card display window. The screw heads of the fasteners are supported on the surface of the cover plate, and the screws of the fasteners threadably engage the screws of the projections 72 of the shell 18. The cradle includes a recess 74 for receiving the handset housing and a recess 76 for receiving the transmitter. A finger 78 of the cover plate 70 fits into the recess 74 and projects above the recess 74 so that it can engage an automatic line disconnect switch 80 shown in FIG.

As shown in FIGS. 3 and 4, thumb grip 83 is provided with a thumb-operated on/off switch 82 extending through an opening 84. As shown in FIGS. The thumb grip is opposite and cooperates with the finger grip 17. The thumb switch is capable of reciprocating linearly in the longitudinal direction of the device, and is connected to the slide 86.
and a protrusion 88. The projecting piece projects in a direction perpendicular to the movement direction of the slide and thumb switch. The protrusion includes a step 90 including stepped surfaces 92, 94 in a direction transverse to the direction of movement of the thumb switch. A rear notch 96 is formed from the step between these two surfaces. The on/off switch includes a knurled protrusion 98 for thumb rest.

A link 100 as a switch coupling member includes a sleeve 102 that fits over a pivot pin 103 embedded in the circuit board 44 so that the link is attached to the circuit board 44 itself. Link 100 has a complementary spring support finger 10 projecting from slide 86.
It includes an arm 104 as a first arm with a spring support finger 105 facing 6. A spring 108 is mounted in compression around the fingers and biases the on/off switch and link away from each other.

The claw 110 formed at the radial end of the claw arm 112 as the third arm starting from the sleeve 102 is approximately
Form a 90° angle. The claw 110 is the slide 86
It rides on either side of the step 90 depending on the juxtaposed relationship between the claw and the slide, which will be described in detail later. Line breaking arm 11 as second arm
4 is the first arm 1 extending radially from the sleeve 102.
04 and protrudes from the opposite side by approximately the diameter thereof, and is provided with a driven pin 116. As is clear from FIG. 3, the driven pin 116 is inserted into the bottom plate 30 perpendicularly to the plane of the line interrupting arm 114 and projects upward.

In FIG. 3, the guide slot 11 of the bottom plate 30
8 is equipped with an automatic line cutoff switch 80 so as to be movable back and forth in the longitudinal direction of the device. Driven pin 116
has entered slot 120 of automatic line cutoff switch 80. Movement of the automatic line disconnect switch determines the position of follower pin 116 and thus the rotational position of link 100. The pin 116 acts as a drive member to lock the automatic line cut-off switch 80 in a first mode in which the automatic line switch 80 is in the locked position and in a second mode in which the automatic line switch 80 is in a triggered position.
2 to its "off" position. The automatic line disconnect switch 80 has an upright head 12 that rises at right angles from the operating plane of the switch.
2, and the finger 78 of the pedestal 12 is attached to this.
occlusion.

Typically, the on/off switch 82 controls connection or disconnection to the line and is operated by the telephone user. Automatic line cutoff switch 80 releases switch 82 when the handset is placed on the cradle. As the on-off switch 80 moves from the "off" position to the "on" position, the on-off switch 80 compresses the spring 108;
As a result, spring 108 biases arm 104. However, since the claw 110 comes into contact with the adjacent surface 94 to prevent rotation, even if a biasing force is applied to the arm 104, the link 100 cannot rotate in response. Thus, the spring remains compressed while the on/off switch moves toward the "on" position. When the surface 94 separates from the pawl 110, the link rotates under the action of the spring 108 as a free movement member, and the pawl falls into the notch 96.
It interlocks with surface 92. As the link rotates, the driven pin 116 also rotates to move the automatic line cutoff switch 80 toward the center of the device and to the reset position as the trigger position. When the handset is placed on the handset in this position, the finger 78, which is the member that triggers the automatic line cut-off switch, is attached to the head 122.
The weight of the device placed on the cradle trips the automatic line cut-off switch 80, and the link 10
0 to move the on/off switch 82 to its "off" position and disconnect the line. Suspending the cradle vertically places all of the weight of the handset on the head 122, increasing the seating effect. When the on-off switch is "off", the surface 94 engages with the claw 110, and the on-off switch is "on".
The rotation of the link and the accompanying line connection are prevented until the switch is made. When you turn the on-off switch from "on" to "off", slide 8
6 and the protruding piece 88 are removed from the link 100. The pawl 110 rides up from the notch 96 onto the surface 94, and the link 100 rotates counterclockwise by that amount. The link cannot rotate any further because the spring 108 forces it to rotate clockwise.

More particularly, the link 100 includes an arm 104 extending radially from the sleeve 102 and having an arm 114 extending radially from the sleeve 102 opposite the arm 104 when viewed in the same elevation. Arm 104 has a major surface in a vertical plane, and arm 114 has a major surface in a horizontal plane. The pawl 110 has a rounded tip 124 and extends substantially perpendicular to the axis of rotation of the link, that is, the direction in which the pin 103 extends radially from its axis. The pawl support arm 112 extends radially from the axis. A follower pin 116 extends upwardly from the major surface of the arm 114 for engagement with a slot 120 in the automatic line disconnect switch. Second
As is clear from the figures and FIG.
protrudes in a direction perpendicular to the direction of movement of the switch body and integrally with the switch body. The switch body is located substantially in the same plane as the plane parallel to the direction of movement of the switch 80. Switch 80 is Switch Board 50
It has a step 126 that is lower than the bottom plate 3.
It is located within a slot 128 formed in the lower portion 130 of the 0. A bridge 131 on the bottom plate supports the vicinity of the head, and a hole 133 for inserting the pin 116 is formed in the bottom plate. Viewed in side view, the switch has a head, a major flat portion perpendicular to the head and parallel to the direction of switch travel, and a step parallel to the major flat portion. The walls of slots 118 and 128 guide switch 80. The driven pin 116 of the link 100 is inserted into the hole in the bottom wall of the slot.

The relationship between the on/off switch, the link, and the automatic line cutoff switch minimizes the possibility of unintentional switching due to inertia. Consider the situation where on/off switch 82 is in the off position as shown in FIG. The acceleration acting to the right in the figure tends to move the switch 82 to the right. The same acceleration acts to move the automatic line disconnect switch in the same direction, and link 100 cannot rotate because the forces acting on this link from the inertial load create counteracting corner forces. This also applies to acceleration in the opposite direction.

As can be seen in FIG. 4, the on/off switch 82 has three ears projecting inwardly from the plane of the slide 86 and engaging blade contacts 136 as resilient switch members secured to the circuit board 44. A shaped piece 132 is provided. Blade contact 136 assumes the "on" position when engaged with contact pin 138. Blade contact 136 is elastic and requires force to displace. From “on” position to “off”
In transitioning into position, blade contact 136 resists displacement by ear 132 and thus spring 108
resist the power of Also during the transition from the "off" position to the "on" position, the blade contact 136
Resist the power of 08. Although this resistance does not act over the entire travel of slide 86, it reduces the thumb force required to move on-off switch 82 to the "on" position and reduces the amount of force required to move on-off switch 82 to the "on" position. Increase the force required to move to the "off" position.

As can be seen in FIGS. 4 and 5, the slide 86 includes a finger 104 that projects above the circuit board 44 and acts as a guide. The end of the finger 140 is connected to the hole 1 formed in the circuit board 44.
Located above 42. A pad 144 projects from the slide 86 below the finger 140, and the circuit board 44 is held between the finger 140 and the pad. A button 146 projects from pad 144 into the hole and is guided along the hole wall to secure switch 82 to the circuit board. A similar arrangement exists at the front end of switch 82. A button 148 projects from the tab 88 and passes through a hole 150 in the circuit board and is guided along the hole wall. A finger 152 projects from the slide 86 on the side opposite the tab and is guided along the circuit board to sandwich the circuit board between the tab and the tab.

As shown in FIG. 3, the recess 28 of the shell 14 includes a raised surface 154 of the bottom plate 30.
The switch 80 is guided at. Bottom plate 30 also includes a lower surface 156. The stepped portion of the switch 80 is accommodated in the recess formed in this low surface 156. The lower side 156 is the keypad switch board 5
0 and key pad 4. Locating tabs 158 project from the vertical walls of the recess to locate the keypad and its switch board. A hole whose long axis is perpendicular to the long axis of the handset is formed at the end of the concave portion opposite to the switch 80, and a three-level volume control switch 160 (which has a standard configuration except for the mask 162) is formed. (Fig. 2) is inserted into this hole.

As is apparent from FIGS. 2 and 4, ears 164 project inwardly from finger grip 18 and thumb grip 83, each ear having a slot for receiving circuit board 44. has been formed. The finger and thumb grips thus occupy corresponding positions on the circuit board.
The grip includes a peripheral flange 166 in the main plane of the grip, inside a protruding central portion 168. The flanges align with respective recesses in the upper and lower shells, and are overlain by walls or lips 172 that define the recesses. This relationship is illustrated in FIG. 3 for thumb grip 83, recess 170 and lip 172. The lip defining the grip surrounds the entire circumference of the shell except for the plug access and battery access at one end of the handset. In FIG. 2, ears 174 hang down from the shell 14,
Supports the finger grip and thumb grip from inside the case. Ears 174 prevent the grip from being forced into the shell. Ears 176 depend from the shell 14 to laterally support the circuit board 44 and center the circuit board.

As seen in FIG. 2, the handset includes a battery compartment 178 defined by upper and lower shells. The upper shell 14 includes a vertical rail 180 parallel to the length of the shell and depending a short distance from the top wall 36. A transverse wall 182 is located near the volume control switch 160 and forms the inner limit of the comparison. Vertical walls 183 of the lower shell form the lateral boundaries of the compartment. A horizontal wall 184 of the bottom plate 30 extends between said wall 183 and forms a fifth boundary wall of the compartment at approximately the level of the key pad. Battery compartment has access door 18
6, and the access door 186 has a wall 18
3 and a rail guided within a slot 188 defined by mutually parallel vertical lips 190.

The upper and lower shells of the handset mate along a peripheral joint defined by overlapping flanges. The upper shell has an outer flange on the outside of the shell having a surface that matches the surface of the entire shell. The lower shell includes an inner flange adjacent to and inward of the flange of the upper shell. This overlap bonding allows the upper and lower shells to be properly aligned. This configuration is shown at the right end of FIG. 2, where the outer flange 192 of the upper shell
overlaps the inner flange 194 of the lower shell.

Circuit board 44 is supported by ribs 196 that project longitudinally from fastener lugs 32, 34 and fastener sleeve 198.

As seen in FIG. 2, the cover 26 includes a hole 200 for exposing the head 122 of the automatic line disconnect switch 80. The cover also has an inner lip 202 located below the wall of the handset housing adjacent thereto, both said wall as a complementary lip and the lip 202 being arcuate. This connection fixes the cover and prevents the cover from being removed from any part of the handset other than the upper shell. The cover includes holes for exposing the individual key pads. The cover border of the transmitter housing has a pointed cross-sectional shape when viewed in elevation;
It has a tapered side wall along the longitudinal direction of the handset. The cover has a tab 4 at this end of the handset.
It is fixed by fasteners 22 in 2.

The pedestal 12 is formed from three parts.
As previously mentioned, the upper shell 20 is adapted to receive and center the complementary transmitter housing and transmitter housing to engage the finger 78 with the head 122 of the automatic line disconnect switch 80. Receiver recess 74 and transmitter recess 76
Equipped with. The cover plate 70 has a recess in the peripheral flange that defines a viewing window for the card that can be used to list up frequently called numbers, as well as a recess for inserting a fastener that secures the cradle to the wall. Equipped with a hole. As already mentioned, when the fastener 68 is removed, the cradle is disassembled into its component parts. Shell 20 includes a peripheral outer flange 206 that overlaps an inner flange 208 of shell 18. A mounting fastener protrusion 210 projects from the bottom of the shell 18. shell body 18
The underside of the cord has a complex recess 211 in which extra cords can be stored if necessary. A retaining clip 212 retains the cord.
Support legs 213 protrude from the bottom of the pedestal.

The handset housing receiving recess and the transmitter housing receiving recess of the cradle have different shapes,
Unless complementary housing receiving recesses are used, the handset cannot be correctly placed on the cradle. The recess 76 has a large transverse dimension and includes converging walls that also meet at the apex 214, which has a small longitudinal dimension. This converging wall of recess 76 is generally flat. This recess has a trapezoidal cross section,
The bottom surface is located on the longitudinal bisector of the recess. The handset recess has a generally circular bottom surface 216;
The walls converge toward this base. These walls exhibit a slightly concave curvature. The bottom plate 216 forms a slight angle with respect to the plane of the pedestal and slopes toward the proximal end.

Although the invention has been described in terms of preferred embodiments, the spirit and scope of the invention is not limited to the description of the preferred embodiments.

[Effects of the Invention] Unlike many conventional telephones, which connect and disconnect the line by picking up the handset and placing it on the cradle, the telephone of the present invention connects and disconnects from the cradle. The user can connect to the line by directly and consciously operating the on/off thumb switch with his or her thumb, regardless of the connection. Also,
The telephone of the present invention is automatically disconnected from the line when the handset is placed on the cradle, so the mechanism is different from that of the conventional line disconnection system, which disconnects the line without any conscious effort on the part of the user. The method is no different. Furthermore, the telephone of the present invention employs a dynamically balanced switch mechanism to avoid unintentional disconnections due to dropping the handset. The telephone shell structure of the present invention provides an assembly that is superior in its integrity, economy, and adaptability.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the improved telephone handset and cradle of the present invention as seen from one side thereof, the top and one end of the handset, and FIG. 2 is a view of the improved telephone handset and cradle as seen from the cradle; FIG. Fig. 3 is a longitudinal cross-sectional view showing the improved telephone set, and Fig. 3 is a partial oblique view of the telephone handset showing the automatic line cut-off switch that works with the manual on/off switch, and the telephone shell structure and switching mechanism associated with this switch. Figure 4 shows manual on/off
A partial view showing the switch mechanism and the integral link cooperating between this mechanism and the automatic line cut-off switch shown in FIG. 3; FIG. FIG. 3 is a bottom view of the switch mechanism. 10... telephone handset, 12... cradle, 44...
...Printed circuit board, 52...Telephone housing,
56...Telephone receiver housing, 74...Recess for receiver, 76...Recess for transmitter, 78...Finger, 80...Automatic line disconnection switch, 82...On/off switch, 100...Link.

Claims (1)

[Scope of Claims] 1. A telephone handset and receiver having a receiver for receiving incoming call information, a transmitter for transmitting outgoing call information, and a switch member for controlling connection and disconnection with a line, comprising: (a) a receiver; (b) an on-off switch having an "on" position for manual direct connection to the line and an "off" position for disconnecting the line, regardless of the position of the handset relative to the base; (b) a locked position and a trigger; (c) an on-off switch that sets the automatic line disconnect switch to the ``on'' position and triggers line disconnection when the handset is placed in the cradle; A telephone transmission/reception system comprising an automatic line cutoff switch and a member for interlocking the on/off switch such that when the cutoff switch is activated, the automatic line cutoff switch returns the on/off switch to the "off" position. vessel. 2. The interlocking member provides a link between an automatic line disconnect switch and an on-off switch such that the switch is The link will not work until it is in the "on" position and
Claim 1, characterized in that the link includes a free movement member interposed between the link and the on/off switch so that the link operates only when the automatic line cutoff switch is located. Telephone handsets as described in Section. 3. (a) the handset is provided with an on-off switch capable of moving between its ``on'' and ``off''positions; and (b) the automatic line disconnect switch (c) the interlocking member is located between the on-off switch and the automatic line disconnection device; a link pivotally connected to the handset, the link being turned on and off so as to rotate the link at the same time as the on-off switch moves to its "on"position;
a first arm that interlocks with the off switch; and a second arm that engages the automatic line disconnect switch to move the automatic line disconnect switch to a locked position at the same time as the link is rotated by the on/off switch. A telephone handset according to claim 1, characterized in that it has: 4. (a) The link includes a pawl, and (b) the on-off switch includes a stepped portion having first and second surfaces having a step in a direction perpendicular to the direction of movement of the on-off switch. , when the on-off switch moves from the "off" position to the "on" position, the first surface engages the pawl, preventing rotation of the link until the second surface is aligned with the pawl, and the second
3. The telephone handset of claim 2, wherein as soon as the surface is aligned with the pawl, the pawl engages the second surface and the link rotates to activate the automatic line disconnect switch. 5. Telephone handset according to claim 3, characterized in that the on-off switch is interlocked with the link via a compression spring. 6. The telephone handset of claim 5, wherein the pawl rotates the link while moving between the second surface and the first surface to trigger the automatic line disconnection switch. 7. Claim 1 comprising at least one resilient blade switch member that engages and biases the on-off switch to the "on" position. The telephone handset described in . 8 (a) The on/off switch turns this “off”
(b) at least one resilient plate switch member that engages and biases the on-off switch to the "on"position; A telephone handset according to claim 4, characterized in that it comprises: 9 (a) The interlocking member is located between the automatic line cutoff switch and the on/off switch, is pivotally connected to the handset, and includes a first arm, a second arm diametrically opposed to the first arm, and a claw. a link having a first arm located proximate the on/off switch, and a second arm interlocking with the automatic line disconnect switch and for turning the switch on/off.
The first arm is interlocked with the switch, the claw faces the on-off switch, and a compression spring interposed between the on-off switch and the first arm biases the two in a direction to separate them from each other. (b) The on-off switch is mounted on the handset so as to be movable in the longitudinal direction of the handset, and the on-off switch has two protruding parts adjacent to each other with a step in the orthogonal direction. The protrusion has a stepped portion consisting of a surface, and the first surface of the two surfaces engages with the claw between the "off" and "on" positions of the on-off switch to rotate the link. This prevents the second side from turning on/off.
When the switch is in the "off" position, it engages the nail,
Claims characterized in that as the pawl moves between two planes, the link rotates to change the automatic line disconnect switch between a clicked position and a triggered position. Telephone handset according to paragraph 1. 10. The telephone receiver of claim 9, including at least one blade switch member that engages the on-off switch and biases it toward the "on" position. vessel. 11 A telephone handset that has a handset for receiving incoming call information, a transmitter for transmitting outgoing call information, and a switch member for controlling connection and disconnection with the line, which: (a) The position of the handset with respect to the cradle; (a) an on-off switch having an ``on'' position for manual direct connection to the line and an ``off'' position for disconnecting the line, regardless of the (c) an on/off switch that sets the automatic line disconnect switch to the ``on'' position and activates the automatic line disconnect switch when the automatic line disconnect switch is activated; a member for interlocking an automatic line disconnect switch and an on-off switch such that the automatic line disconnect switch returns the on-off switch to an "off"position; (d) a handset housing, a handset housing, and a telephone circuit; and (e) the on/off switch is mounted on the housing for manual operation by a user;
(f) a first arm pivotally connected to the housing and having an "on" position and an "off" position and having a step between two adjacent faces in the direction of movement thereof;
a second arm forming an angle with the first arm;
and a third arm forming an angle with the second arm.
and a link having a claw formed on a third arm so as to face the stepped portion and engage with one surface of the stepped portion; (g) interposed between the first arm and the on/off switch; The two are then interlocked by applying a force to each of them that increases as the distance between them decreases, compressing the on-off switch as it moves from the "off" position to the "on" position. An attempt is made to pivot the link, but the pawl engages one side of the shoulder and prevents this pivoting until the switch reaches the "on" position, at which time the other side of the shoulder (h) a spring member whose surface faces the pawl and provides the necessary space for the link to pivot and acts to cause the link to pivot; (i) the interlocking member is mounted to the housing for relative movement between the on-off switch and the housing, and loosely fits the second arm; The automatic line cut-off switch is interlocked with the link so that when the link rotates by being activated by turning it to the "on" position, the automatic line cut-off switch is clicked by the third arm, and when engaged with the link, the automatic line cut-off switch is activated. by triggering the link to rotate it, disengaging the pawl from said surface and allowing the spring to move the on-off switch to the "off" position, and bringing the other surface into abutment with the pawl.
acting to prevent pivoting of the link until the on-off switch is again moved to the "on" position. 12. The telephone handset of claim 11, wherein the second arm is loosely fitted to the automatic pivot cutoff switch via a pin/slot connection. 13. The telephone circuit includes a resilient switch member for connecting and disconnecting the line, and an on-off switch engages the resilient switch member to connect the line in the "on" position and disconnect the line in the "off"position; 12. The telephone handset of claim 11, wherein a resilient switch member biases the on-off switch toward the "on" position against a spring member. 14 the resilient switch member includes a blade contact;
14. The telephone handset of claim 13, wherein the on-off switch includes an ear that engages the contact. 15. A telephone handset as claimed in claim 11, including a circuit board for mounting at least a portion of the telephone circuitry, the circuit board being provided with an on/off switch and a link. 16. The telephone of claim 15, wherein the housing has an upper shell, a lower shell, and a member connecting the two, the connecting member positioning the circuit board within the shell. handset. 17. The telephone handset according to claim 16, wherein the coupling member includes a pair of fastener sleeves and a pair of protrusions facing each other to clamp the circuit board. 18. The housing includes finger grips along both sides thereof, the finger grips having inwardly directed ears secured between the shells and guided over the circuit board. A telephone handset according to claim 17. 19. The lower shell includes a recess, a transmitter housing and a handset housing located at both ends of the recess,
A patent claim characterized in that it includes a switch board located in the recess and interlocked with a telephone circuit, a key pad located above the switch board in the recess, and a member for fixing the key pad and the switchboard in position. Telephone handset according to clause 18. 20 The member for fixing the key pad and the switch board in position includes a cover, one end of the cover defines a part of the handset housing and is fixed to the shell by a fastener member at the end on the side of the handset housing. 20. The telephone transmitting/receiving device according to claim 19, wherein the other end of the cover includes an inner lip that engages with a complementary lip of the lower shell to fix the cover in position. vessel. 21 Consisting of a handset and a pedestal, the handset includes a handset housing, a handset housing, a telephone number dialing member, and a switch member for controlling line connection/disconnection, and the cradle is configured to engage and support the handset. (a) an on-off telephone having an ``on'' position for manually and directly connecting the line and an ``off'' position for disconnecting, regardless of the position of the handset relative to the cradle;
(b) an automatic line disconnection switch having a locked position and a triggered position and which triggers line disconnection when the handset is placed in the cradle; and (c) an on-off switch that disconnects the line automatically. The automatic line disconnect switch is set to the ``on'' position, and the automatic line disconnect switch and the on-off switch are connected such that when the automatic line disconnect switch is activated, the automatic line disconnect switch returns the on-off switch to the ``off'' position. (d) a recess in which the cradle engages the handset housing and the transmitter housing; and when the handset is placed in the cradle such that the housing engages the recess, an automatic line cut-off switch is triggered. 1. A telephone set comprising: 22. The telephone set according to claim 21, wherein the trigger member of the cradle includes a hook that engages with and triggers an automatic line cutoff switch. 23. Just as the transmitter housing and the handset housing are formed differently, and the handset cannot be placed on the cradle unless it is oriented in a certain direction, the recesses of the cradle are also different in accordance with the shape of the housing. 22. A telephone according to claim 21. 24. The telephone according to claim 23, wherein the recess has a tapered wall that guides the transmitter housing and the handset housing. 25. A link in which the interlocking member is interposed between an automatic line cutoff switch and an on/off switch;
On-off switch in “off” position and “on” position
a null movement member interposed between the link and the on-off switch so that no link action occurs when the switch is moved between positions until the switch reaches the "on"position; 25. The telephone of claim 24, wherein the link moves to trip the automatic line disconnect switch when the off switch is in the "on" position. 26 (a) The link includes a pawl, and (b) the on-off switch has first and second surfaces that have a step in a direction perpendicular to the direction of movement of the switch and are substantially parallel to the direction of movement. a step portion comprising: a step portion that prevents rotation of the link until the first surface engages the pawl and the second surface aligns with the pawl when the on-off switch moves from the "off" position to the "on"position; 26. The telephone set of claim 25, wherein when the second surface is aligned with the pawl, the pawl engages the second surface and the link rotates to deactivate the automatic line cut-off switch. 27 (a) the on-off switch interacts with the link via a compression spring that biases the on-off switch toward the "off"position; and (b) the link engages the on-off switch. 27. A telephone as claimed in claim 26, including at least one resilient blade switch member for biasing the telephone to the "on" position.