CN213182741U

CN213182741U - Calculator

Info

Publication number: CN213182741U
Application number: CN202022614681.4U
Authority: CN
Inventors: 杨春生
Original assignee: Zhuhai Megain Technology Co ltd
Current assignee: Zhuhai Megain Technology Co ltd
Priority date: 2020-11-12
Filing date: 2020-11-12
Publication date: 2021-05-11
Anticipated expiration: 2030-11-12

Abstract

The utility model relates to a calculate the utensil field, particularly, relate to a calculator. The calculator comprises a shell, an operation board, a circuit board and a plurality of keys; the circuit board is electrically connected with a plurality of Hall sensors; the operating board is provided with a plurality of key holes communicated with the inner cavity, and the plurality of keys, the plurality of key holes and the plurality of Hall sensors are in one-to-one correspondence; the key comprises a base, a movable shaft, a reset piece and a magnetic piece; the base is accommodated in the corresponding key hole and is clamped with the side wall of the key hole; along the orientation of seting up of key hole, the movable passage has been seted up to the base, resets and is connected with base and loose axle, and the loose axle is connected with the magnetic part that is located the movable passage towards the one end of circuit board, and the loose axle is used for overcoming the elastic force that resets and drive the direction motion of magnetic part towards the circuit board under the effect of external force to trigger corresponding hall sensor. The calculator can conveniently detach the keys.

Description

Calculator

Technical Field

The utility model relates to a calculate the utensil field, particularly, relate to a calculator.

Background

The calculator is an electronic product capable of performing mathematical operation, is widely applied to commercial transactions, and is one of necessary office supplies. Besides displaying the calculation result, the system also has the functions of overflow indication, error indication and the like. The calculator mainly comprises a display screen, keys, a power supply, a digit form selection switch, a decimal digit selection switch, a shell and the like.

Among the constituent modules of the calculator, the key is the module with the highest frequency of use, and at present, the key adopted by the calculator is generally a thin film key which is of a fixed structure with a PCBA (printed Circuit Board Assembly) Circuit Board, so that the calculator has the problem that the key is difficult to detach.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a calculator, it can conveniently dismantle the button.

The embodiment of the utility model is realized like this:

in a first aspect, the present invention provides a calculator, which includes a casing, an operation panel, a circuit board and a plurality of keys;

the operating panel is connected with the shell, and the operating panel and the shell form an inner cavity together; the circuit board is arranged in the inner cavity and is electrically connected with a plurality of Hall sensors; the operating board is provided with a plurality of key holes communicated with the inner cavity, and the plurality of keys, the plurality of key holes and the plurality of Hall sensors are in one-to-one correspondence;

the key comprises a base, a movable shaft, a reset piece and a magnetic piece; the base is accommodated in the corresponding key hole and is clamped with the side wall of the key hole; along the orientation of seting up of key hole, the movable passage has been seted up to the base, resets and is connected with base and loose axle, and the loose axle is connected with the magnetic part that is located the movable passage towards the one end of circuit board, and the loose axle is used for overcoming the elastic force that resets and drive the direction motion of magnetic part towards the circuit board under the effect of external force to trigger corresponding hall sensor.

In an alternative embodiment, the key further comprises a keycap;

along the opening direction of the key hole, one end of the movable shaft departing from the circuit board is connected with the key cap.

In an optional embodiment, the key further comprises a key cover, the key cover is connected with the base, the key cover is provided with a guide channel communicated with the movable channel, and the axis of the guide channel is overlapped with the axis of the movable channel;

the movable shaft is slidably engaged with the guide channel.

In an alternative embodiment, one end of the keycap facing the inner cavity is provided with a connecting part and a matching groove arranged on the periphery of the connecting part;

the connecting part is connected with the movable shaft, and the matching groove is used for accommodating the key cover.

In an alternative embodiment, the movable shaft includes a first section, a second section and a third section along the opening direction of the key hole;

the first section is connected to the connecting portion, the second section is slidably engaged with the guide passage, and the third section is slidably engaged with the movable passage.

In an optional embodiment, the connecting portion is a connecting hole, and the first sub-portion is accommodated in the connecting hole and clamped with an inner wall of the connecting hole.

In an alternative embodiment, the second section is provided with a mounting groove on a side facing the inner cavity, and the resetting piece is connected with the groove bottom of the mounting groove.

In an alternative embodiment, the mounting groove is located at the periphery of the third section.

In an alternative embodiment, the magnetic member is a permanent magnet.

In an alternative embodiment, the connecting portion is in clearance fit with the guide channel when the key cap is moved under the action of an external force to a position where the key cap abuts against a groove wall or a groove bottom of the fitting groove.

The utility model discloses beneficial effect includes:

the calculator comprises a shell, an operation board, a circuit board and a plurality of keys. Wherein, the operating panel is seted up a plurality of key holes that communicate with the inner chamber, and the circuit board has a plurality of hall sensor, and a plurality of buttons, a plurality of key holes and a plurality of hall sensor one-to-one.

When the keys are arranged, each key comprises a base, a movable shaft, a reset piece and a magnetic piece; the base is accommodated in the corresponding key hole and is clamped with the side wall of the key hole, so that the base is detachably connected to the operation board; the movable shaft is used for overcoming the elastic force of the reset piece under the action of external force and driving the magnetic piece to move towards the direction of the circuit board so as to trigger the corresponding Hall sensor; therefore, the movable shaft is pressed by external force, so that the magnetic part can be driven to move relative to the movable channel, and the corresponding Hall sensor is triggered to work; and, after external force disappeared, under the effect of the restoring force of piece that resets, loose axle and magnetic part can reply to home position to avoid taking place the condition that the mistake touched hall sensor.

In summary, the plurality of keys of the calculator are mutually independent and clamped in the corresponding key holes, and each key is not directly connected with the corresponding hall sensor, so that the plurality of keys are detachably connected to the operating board, and when the keys are maintained, the normal work of the circuit board cannot be influenced even if the keys are detached from the operating board; therefore, each key is connected with the detachable operation board, the processes of working of each key are all independent, the keys can be conveniently detached in the process of maintaining the calculator, and the keys needing to be maintained can be maintained by taking down the keys.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a first view angle of a calculator according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a second view angle of the calculator in the embodiment of the present invention;

FIG. 3 is a cross-sectional view of a calculator in an embodiment of the present invention;

FIG. 4 is an enlarged view of the section IV in FIG. 3;

fig. 5 is a schematic structural diagram of the key cap and the movable shaft according to the embodiment of the present invention.

Icon 200-calculator; 210-a housing; 220-an operation panel; 230-a circuit board; 240-key press; 211-lumen; 221-key hole; 241-a base; 242-key cap; 243-movable shaft; 244-a reset piece; 245-an active channel; 246-a magnetic member; 247-a key cover; 248-a guide channel; 249-connecting part; 251-a mating groove; 252-first subsection; 253-a second subsection; 254-third subsection; 255-mounting groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-4, fig. 1-3 show the structure of a calculator in an embodiment of the present invention, and fig. 4 shows the structure of a key in an embodiment of the present invention; the present embodiment provides a calculator 200, the calculator 200 includes a housing 210, an operation panel 220, a circuit board 230, and a plurality of keys 240.

The operation panel 220 is connected with the shell 210, and the operation panel 220 and the shell 210 together form an inner cavity 211; a circuit board 230 is disposed in the interior cavity 211, the circuit board 230 having a plurality of hall sensors (not shown in the form of figures); the operation panel 220 is provided with a plurality of key holes 221 communicated with the inner cavity 211, and the plurality of keys 240, the plurality of key holes 221 and the plurality of hall sensors are in one-to-one correspondence.

The button 240 includes a base 241, a movable shaft 243, a reset member 244 and a magnetic member 246; the base 241 is accommodated in the corresponding key hole 221 and clamped with the sidewall of the key hole 221; along the opening direction of the key hole 221, the base 241 is provided with a movable channel 245, the reset piece 244 is connected with the base 241 and the movable shaft 243, one end of the movable shaft 243, facing the circuit board, is connected with the magnetic piece 246 located in the movable channel 245, the other end of the movable shaft 243 is connected with the key cap 242, and the movable shaft 243 is used for overcoming the elastic force of the reset piece 244 and driving the magnetic piece 246 to move towards the circuit board 230 under the action of external force so as to trigger the corresponding hall sensor.

The working principle of the calculator 200 is as follows:

the calculator 200 includes a housing 210, an operation panel 220, a circuit board 230, and a plurality of keys 240. The operating panel 220 is provided with a plurality of key holes 221 communicated with the inner cavity 211, the circuit board 230 is provided with a plurality of hall sensors, and the plurality of keys 240, the plurality of key holes 221 and the plurality of hall sensors are in one-to-one correspondence.

When the buttons 240 are arranged, each button 240 includes a base 241, a movable shaft 243, a reset member 244 and a magnetic member 246; the base 241 is accommodated in the corresponding key hole 221 and clamped with the sidewall of the key hole 221, so that the base 241 is detachably connected to the operation panel 220; along the opening direction of the key hole 221, the base 241 is provided with a movable channel 245, the reset piece 244 is connected with the base 241 and the movable shaft 243, one end of the movable shaft 243, facing the circuit board, is connected with the magnetic piece 246 located in the movable channel 245, the other end of the movable shaft 243 is connected with the key cap 242, and the movable shaft 243 is used for overcoming the elastic force of the reset piece 244 and driving the magnetic piece 246 to move towards the circuit board 230 under the action of external force so as to trigger the corresponding hall sensor; therefore, the movable shaft 243 is pressed by an external force, so that the magnetic member 246 is driven to move relative to the movable channel 245, and the corresponding hall sensor is triggered to work; after the external force disappears, the movable shaft 243 and the magnetic member 246 can be restored to the original positions by the restoring force of the restoring member 244, thereby preventing the hall sensor from being touched by mistake.

In summary, the plurality of keys 240 of the calculator 200 are independently clamped in the corresponding key holes 221, and each key 240 is not directly connected to the corresponding hall sensor, so that the plurality of keys 240 are detachably connected to the operation board 220, and when the keys 240 are maintained, even if the keys 240 are detached from the operation board 220, the normal operation of the circuit board 230 is not affected; therefore, the detachable connection of each key 240 and the operation panel 220 and the working process of each key 240 are independent of each other, so that the keys can be conveniently detached in the maintenance process of the calculator 200, and the keys 240 to be maintained can be taken down for maintenance, so that the maintenance difficulty and the maintenance cost of the keys 240 of the calculator 200 can be reduced, the maintenance efficiency can be improved at the same speed, the service life of the calculator 200 can be prolonged, and the resource waste and the environmental pollution are avoided.

It should be further noted that, because the operating panel 220 and the casing 210 together form the inner cavity 211, and the operating panel 220 is provided with a plurality of key holes 221 communicated with the inner cavity 211, in the using process, impurities may enter the inner cavity 211 through the key holes 221, but in the present embodiment, a plurality of keys 240, a plurality of key holes 221, and a plurality of hall sensors are used in one-to-one correspondence, that is, the base 241 of each key 240 is accommodated in the corresponding key hole 221 and is clamped with the side wall of the key hole 221, so that in this way, the key hole 221 is sealed, thereby improving the waterproof and dustproof performance of the calculator 200; and the keys 240 further include keycaps 242; when the key cap 242 is disposed, one end of the movable shaft 243 away from the circuit board 230 is connected to the key cap 242 along the opening direction of the key hole 221, so that the key cap 242 can improve the comfort of pressing and can also play a role in blocking foreign matters.

Further, referring to fig. 4, in the present embodiment, the key 240 further includes a magnetic member 246, the magnetic member 246 is located in the movable channel 245 and connected to an end of the movable shaft 243 facing the circuit board 230, and the magnetic member 246 is used for triggering the circuit board 230. And the magnetic member 246 is a permanent magnet.

Referring to fig. 4 and 5, fig. 5 shows the structure of the key cap and the movable shaft in the embodiment of the present invention, when the key 240 is disposed, based on the above structure, the key 240 may further include a key cover 247, the key cover 247 is connected to the base 241, the key cover 247 is provided with a guiding channel 248 communicated with the movable channel 245, and an axis of the guiding channel 248 coincides with an axis of the movable channel 245; the movable shaft 243 is slidably engaged with the guide passage 248. It should be noted that, as can be seen from the above, when the base 241 is connected to the key hole 221, the base 241 can close the key hole 221, at this time, the movable channel 245 on the base 241 is communicated with the external environment and the inner cavity 211, the key cover 247 is connected to the base 241, the guide channel 248 on the key cover 247 is communicated with the movable channel 245, and the movable shaft 243 is slidably engaged with the guide channel 248, so that the key cover 247 can prevent impurities from entering the movable channel 245 and can guide the movable shaft 243.

When the key cap 247 is disposed, the key cap 247 is connected to the base 241, and both ends of the movable shaft 243 are respectively connected to the magnetic member 246 and the key cap 242, so that the key cap 247 is relatively located between the key cap 242 and the base 241, and when the key cap 242 is pressed, the key cap 242 moves in a direction approaching the key cap 247 by an external force, and thus, in order to prevent the key cap 247 from interfering with the movement of the key cap 242, a connection part 249 and a fitting groove 251 disposed on the periphery of the connection part 249 are disposed at one end of the key cap 242 facing the inner cavity 211; the connecting portion 249 is connected to the movable shaft 243, and the fitting groove 251 is used to receive the key cover 247. When the key cap 242 is moved by an external force to a position where the key cover 247 abuts against a groove wall or a groove bottom of the fitting groove 251, the connection 249 is in clearance fit with the guide passage 248, that is, when the key cap 242 is pressed, the connection 249 on the key cap 242 can be inserted into the guide passage 248.

Further, referring to fig. 5, in the present embodiment, when the movable shaft 243 is disposed, along the opening direction of the key hole 221, the movable shaft 243 includes a first subsection 252, a second subsection 253, and a third subsection 254; first section 252 is connected to connector 249, second section 253 slidably engages guide channel 248, and third section 254 slidably engages movable channel 245. The connection portion 249 is a connection hole, and the first branch portion 252 is accommodated in the connection hole and is clamped with an inner wall of the connection hole.

Referring to fig. 4 and 5, in the present embodiment, the restoring member 244 is a spring, a mounting groove 255 is disposed on a side of the second sub-portion 253 facing the inner cavity 211, the mounting groove 255 is located on an outer periphery of the third sub-portion 254, and the restoring member 244 is connected to a groove bottom of the mounting groove 255. Therefore, when the spring is installed, the restoring member 244 is sleeved on the outer periphery of the wall body of the movable passage 245 and the movable shaft 243.

The above description is only an example of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A calculator, comprising:

the calculator comprises a shell, an operation board, a circuit board and a plurality of keys;

the key comprises a base, a movable shaft, a reset piece and a magnetic piece; the base is accommodated in the corresponding key hole and clamped with the side wall of the key hole; follow the direction of seting up of key hole, the activity passageway has been seted up to the base, reset with the base reaches the loose axle is connected, the loose axle orientation the one end of circuit board with be located in the activity passageway the magnetic part is connected, the loose axle is used for overcoming under the effect of external force the elastic force of the piece that resets and drives the magnetic part orientation the direction motion of circuit board to trigger corresponding hall sensor.

2. The calculator of claim 1, wherein:

the key further comprises a keycap;

and one end of the movable shaft, which deviates from the circuit board, is connected with the keycap along the opening direction of the key hole.

3. The calculator of claim 2, wherein:

the key further comprises a key cover, the key cover is connected with the base, a guide channel communicated with the movable channel is formed in the key cover, and the axis of the guide channel is overlapped with the axis of the movable channel;

the movable shaft is slidably engaged with the guide channel.

4. The calculator of claim 3, wherein:

one end of the keycap facing the inner cavity is provided with a connecting part and a matching groove arranged on the periphery of the connecting part;

5. The calculator of claim 4, wherein:

along the opening direction of the key hole, the movable shaft comprises a first subsection, a second subsection and a third subsection;

6. The calculator of claim 5, wherein:

the connecting part is a connecting hole, and the first sub-part is accommodated in the connecting hole and clamped with the inner wall of the connecting hole.

7. The calculator of claim 5, wherein:

the second part is towards one side of inner chamber is provided with the mounting groove, reset with the tank bottom of mounting groove is connected.

8. The calculator of claim 7, wherein:

the mounting groove is located at the periphery of the third subsection.

9. The calculator of claim 2, wherein:

the magnetic part is a permanent magnet.

10. The calculator of claim 4, wherein:

when the keycap moves to the position where the keycap is abutted against the groove wall or the groove bottom of the matching groove under the action of external force, the connecting part is in clearance fit with the guide channel.