CN213150623U - Key switch assembly and toaster - Google Patents

Abstract

The application relates to the technical field of toaster, and provides a key switch assembly and a toaster, wherein the key switch assembly comprises a circuit board, a press switch, a display lamp and a light-transmitting key; the press switch is arranged on the circuit board and is provided with a press part; the display lamp is arranged on the circuit board; the light-transmitting key comprises a key body, an extrusion part and a supporting part; wherein, the key body covers the display lamp; the pressing part and the supporting part are respectively arranged on two opposite sides of the key body, the pressing part is abutted against the pressing part, and the supporting part is abutted against the circuit board; when the key body is pressed, the extrusion part can rotate around the supporting part and extrude the pressing part. The latter includes the former. This key switch subassembly can solve the printing opacity key switch among the prior art and easily appear deflecting, hard and the dead problem of easy card when pressing.

Description

Key switch assembly and toaster

Technical Field

The application relates to the technical field of toaster, in particular to a key switch assembly and a toaster.

Background

Toaster, also known as automatic slice toaster, toaster is an electric cooker specially used for re-toasting sliced bread.

In the prior art, the toaster is generally provided with a key switch on the peripheral wall of a machine body, a user can adjust the working mode of the toaster through the key switch, and the more advanced toaster is provided with the key switch as a light-transmitting key and a display lamp correspondingly arranged below the key, so that the user can use the toaster at night or in the dark.

Fig. 1 is the vertical cross-sectional view of the printing opacity key switch of toaster among the prior art, as shown in fig. 1, because the below of printing opacity key is provided with press switch 1 and display lamp 2, must press the point a of pressing in the printing opacity key 3 when pressing and just can be effective, laborsaving with this printing opacity key switch closure, but when the user uses under evening or dark condition, because the guide effect of display lamp 2, the user often can press point B of pressing, need great pressing force when pressing like this, and still lead to printing opacity key 3 to produce certain deflection easily, the card even dies in the mounting hole.

Therefore, a transparent push-button switch which is labor-saving to press and does not cause jamming is urgently needed in the market.

SUMMERY OF THE UTILITY MODEL

In view of this, the application provides a key switch assembly and a toaster, which are used for solving the problems that a light-transmitting key switch in the prior art is easy to deflect, hard to work and easy to block when pressed.

The key switch assembly provided by the application comprises a circuit board, a press switch, a display lamp and a light-transmitting key;

the press switch is arranged on the circuit board and is provided with a press part;

the display lamp is arranged on the circuit board;

the light-transmitting key comprises a key body, an extrusion part and a supporting part;

the key body covers the display lamp;

the pressing part and the supporting part are respectively arranged on two opposite sides of the key body, the pressing part is abutted against the pressing part, and the supporting part is abutted against the circuit board;

when the key body is pressed, the extrusion part can rotate around the supporting part and extrude the pressing part.

When the key switch assembly is used, the key body in the light-transmitting key is covered on the display lamp, so that when a user presses the light-transmitting key at night or in the dark, the middle part of the key body is pressed under the guiding action of the display lamp, and the problems of pressing deviation and deflection are avoided; and because extrusion portion and supporting part set up respectively in the relative both sides of button body, and extrusion portion and pressing the portion butt, and the supporting part is with circuit board butt, like this when pressing the button body, extrusion portion can rotate around the supporting part and extrude and press the portion of pressing to make press the switch trigger. Because the supporting part can form a lever mechanism with extrusion portion, button body, consequently only need press a segment displacement with the button body, alright realize that the great displacement of extrusion portion extrudees the function of pressing the splenium, avoid the button body to appear pressing down too deeply, the dead problem of card.

In one possible design, an end surface of the supporting portion abutting against the circuit board is a circular arc surface.

When pressing the button body and making the extrusion portion rotate around the supporting part like this, the butt end of supporting part and circuit board also can produce the rotation of little angle relatively the circuit board to make printing opacity button can be more laborsaving pressing the process that triggers press switch.

In one possible design, the light-transmitting key further comprises a limiting part;

the limiting part is positioned on one side or two sides of the supporting part;

one end of the limiting part is connected with the circuit board and used for limiting the installation distance between the light-transmitting key and the circuit board.

When installing this key switch subassembly like this, can make button body and circuit board through spacing portion on the one hand and install fixedly in advance, on the other hand when the key switch subassembly passes through the screw and finally installs fixedly with the electrical apparatus casing, spacing portion can spacing printing opacity button and the erection space of circuit board, avoids button body, circuit board to be installed the tension and influence the problem of normal use.

In one possible design, the circuit board is further provided with a mounting portion;

the limiting part is connected with the circuit board in an installation mode that one end of the limiting part is inserted into the installation part.

Therefore, the pre-installation and fixation of the two can be realized only by a plug-in mounting mode, and the pre-installation and fixation device has the advantages of simple structure, convenience in pre-installation and firmness.

In one possible embodiment, the stop portion is connected to the support portion by a connecting portion.

Like this when pressing the button body, the supporting part can normally rotate relative to the circuit board, spacing portion can normally keep with the installation of circuit board fixed, and connecting portion can be twisted and store elastic potential energy at this in-process, consequently when no longer pressing the button body, connecting portion can reverse twist and release elastic potential energy, make the reset that the button body can be better.

In one possible design, the limiting part is plate-shaped and is arranged perpendicular to the circuit board;

the connecting part is strip-shaped, one end of the connecting part is vertically connected with the limiting part, and the other end of the connecting part is vertically connected with the supporting part.

The arrangement can ensure that the limiting part and the connecting part have simple structures and small occupied space, and when the limiting part is stressed to support the key body, the acting force can be stably and vertically transmitted to the circuit board; the connecting part is convenient to twist and deform to store energy when stressed.

In one possible design, the stopper portion is made of a light-shielding material;

or the limiting part is made of a semi-transparent material with the thickness of at least 2 mm.

Therefore, the limiting part can partially shield light rays emitted by the display lamp, so that the light rays emitted by the display lamp can only irradiate the outside through the light-transmitting key, the light leakage of the display lamp is avoided, and a user can accurately press the light-transmitting key.

In one possible design, the press switches, the display lamps and the light-transmitting keys are arranged on the circuit board in a plurality of groups in a one-to-one correspondence manner;

and the limiting part is connected between two adjacent light-transmitting keys.

Therefore, different functions can be executed through the plurality of light-transmitting keys, and the two adjacent light-transmitting keys share the limiting part, so that the structure can be simplified, and manufacturing materials can be saved.

In one possible design, a concave part is arranged on one side of the key body facing the display lamp;

the display lamp can extend at least partially into the recess.

The key body and the display lamp can be more compact in structure by arranging the concave part, the weight of the key body can be reduced by the concave part, and manufacturing materials of the key body are saved.

The application also provides a toaster, which comprises a toaster body and the key switch assembly; the machine body is provided with a mounting hole for mounting the light-transmitting key.

The toaster comprises the key switch assembly, all the beneficial effects of the toaster can be realized, and the details are not repeated.

Additional features and advantages of embodiments of the present application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of embodiments of the present application. The objectives and other advantages of the embodiments of the application will be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

FIG. 1 is a vertical cross-sectional view of a light-transmissive key switch of a prior art toaster;

fig. 2 is a schematic structural diagram of a key switch assembly according to an embodiment of the present disclosure;

fig. 3 is a vertical partial sectional view of a key switch assembly provided in an embodiment of the present application;

fig. 4 is a schematic view of a first viewing angle of a light-transmissive key in a key switch assembly according to an embodiment of the present disclosure;

fig. 5 is a schematic view of a second viewing angle of a light-transmissive key in the key switch assembly according to the embodiment of the present disclosure;

fig. 6 is an exploded view of the toaster according to the embodiment of the present application.

Reference numerals:

1-pressing a switch;

11-a pressing part;

2-display lamp;

3-a light-transmitting key;

31-key body;

32-an extrusion;

33-a support portion;

34-a limiting part;

35-a connecting part;

4-a circuit board;

5-organism.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

Detailed Description

For better understanding of the technical solutions of the present application, the following detailed descriptions of the embodiments of the present application are provided with reference to the accompanying drawings.

It should be understood that the embodiments described are only a few embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It should be noted that the terms "upper", "lower", "left", "right", and the like used in the embodiments of the present application are described in terms of the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.

The following describes a specific embodiment of the key switch assembly according to the structure of the key switch assembly provided in the embodiments of the present application.

Fig. 2 is a schematic structural diagram of a key switch assembly according to an embodiment of the present disclosure;

fig. 3 is a vertical partial sectional view of a key switch assembly provided in an embodiment of the present application;

fig. 4 is a schematic view of a first viewing angle of a light-transmissive key in a key switch assembly according to an embodiment of the present disclosure;

fig. 5 is a schematic view of a second viewing angle of a light-transmissive key in the key switch assembly according to the embodiment of the present disclosure;

fig. 6 is an exploded view of the toaster according to the embodiment of the present application.

As shown in fig. 2 and 3, the present embodiment provides a key switch assembly including a circuit board 4, a push switch 1, a display lamp 2, and a light-transmissive key 3; the push switch 1 is arranged on the circuit board 4 and is provided with a push part 11; the display lamp 2 is arranged on the circuit board 4; the light-transmitting key 3 includes a key body 31, a pressing portion 32, and a supporting portion 33; wherein, the key body 31 covers the display lamp 2; the pressing part 32 and the supporting part 33 are respectively arranged at two opposite sides of the key body 31, the pressing part 11 is abutted with the pressing part 32, and the supporting part 33 is abutted with the circuit board 4; when the key body 31 is pressed, the pressing portion 32 can rotate around the supporting portion 33 and press the pressing portion 11.

When the key switch component is used, as the key body 31 in the transparent key 3 is covered on the display lamp 2, when a user presses the transparent key 3 at night or in the dark, the middle part of the key body 31 is pressed under the guiding action of the display lamp 2, so that the problems of pressing deviation and deflection are avoided; moreover, since the pressing portion 32 and the supporting portion 33 are respectively disposed on two opposite sides of the key body 31, the pressing portion 32 abuts against the pressing portion 11, and the supporting portion 33 abuts against the circuit board 4, when the key body 31 is pressed, the pressing portion 11 can be pressed by the pressing portion 32 rotating around the supporting portion 33, so that the push switch 1 is triggered. Because the supporting part 33, the extruding part 32 and the key body 31 can form a lever mechanism, the function of extruding the pressing part 11 by the larger displacement of the extruding part 32 can be realized only by pressing the key body 31 by a small displacement, and the problems of over-deep pressing and blocking of the key body 31 are avoided.

To sum up, this key switch subassembly has the advantage that can supply the user to accurately press, only need press button body 31 to press a segment displacement alright trigger push switch 1, can solve the printing opacity key switch among the prior art existence appear easily when pressing deflect, hard and easily card dead problem.

It should be noted that the display lamp 2 may be configured as an LED lamp, and the key switch assembly may be used in various electric appliances, including but not limited to a toaster, a microwave oven, an electric oven, etc.

In an alternative of the present embodiment, the end surface of the support portion 33 abutting the circuit board 4 is a circular arc surface.

Specifically, as shown in fig. 2 and 3, the end surface of the supporting portion 33 abutting against the circuit board 4 is configured as an arc surface, so that when the pressing portion 32 rotates around the supporting portion 33 when the key body 31 is pressed, the abutting end of the supporting portion 33 and the circuit board 4 can also rotate at a slight angle relative to the circuit board 4, and thus the process of pressing and triggering the press switch 1 by the transparent key 3 can be more labor-saving.

The support portion 33 may be formed in a plate shape or a strip shape, and the abutting end of the support portion 33 with the circuit board 4 may be formed in a semi-cylindrical shape, so that the support portion 33 may be in line contact with the circuit board 4.

In an alternative of this embodiment, the light-transmitting key 3 further includes a limiting portion 34; the limiting part 34 is positioned at one side or two sides of the supporting part 33; one end of the limiting part 34 is connected with the circuit board 4 and used for limiting the installation distance between the light-transmitting key 3 and the circuit board 4.

Specifically, as shown in fig. 2 and 4, the key body 31 is connected to the circuit board 4 through the limiting portion 34, so that when the key switch assembly is installed, on one hand, the key body 31 and the circuit board 4 can be pre-installed and fixed through the limiting portion 34, and on the other hand, when the key switch assembly is finally installed and fixed to the electrical appliance housing through the screw, the limiting portion 34 can limit the installation distance between the transparent key 3 and the circuit board 4, thereby avoiding the problem that the normal use is affected due to over-tightening of the key body 31 and the circuit board 4.

In an alternative of this embodiment, the circuit board 4 is further provided with a mounting portion; the limiting portion 34 is mounted and connected to the circuit board 4 in such a manner that one end thereof is inserted into the mounting portion.

The shape of above-mentioned installation department, sunken degree of depth can be according to the shape of spacing portion 34 grafting end, the nimble adjustment setting of thickness of circuit board 4, and the installation department specifically can set to the through-hole that runs through circuit board 4, also can set to the counter sink that does not run through circuit board 4, and the installation department, spacing portion 34 the two can have and set to interference fit in addition, only can realize the two through the mode of cartridge and install fixedly in advance, have simple structure, simple to operate in advance, firm advantage.

In an alternative of the present embodiment, the stopper portion 34 is connected to the support portion 33 through the connecting portion 35.

Specifically, as shown in fig. 4, the position-limiting portion 34 is connected to the supporting portion 33 through the connecting portion 35, and the connecting portion 35 is preferably made of an elastic material, so that when the key body 31 is pressed, the supporting portion 33 can normally rotate relative to the circuit board 4, the position-limiting portion 34 can normally maintain the installation and fixation with the circuit board 4, and the connecting portion 35 can be twisted and store elastic potential energy in the process, so that when the key body 31 is no longer pressed, the connecting portion 35 can be reversely twisted and release the elastic potential energy, so that the key body 31 can be better reset.

The connecting portion 35 is not necessarily too thick or too thin, and the length of the cross section of the connecting portion 35 is preferably 1.8mm to 2.5mm, and the width is preferably 0.7mm to 0.9 mm.

It should be noted that the key body 31, the pressing portion 32, the supporting portion 33, the limiting portion 34 and the connecting portion 35 may be integrally formed by injection molding using transparent plastic.

In an alternative of the present embodiment, the position restricting portion 34 is plate-shaped and is disposed perpendicular to the circuit board 4; the connecting portion 35 is strip-shaped, and one end of the connecting portion 35 is vertically connected to the limiting portion 34, and the other end is vertically connected to the supporting portion 33.

Specifically, as shown in fig. 4 and 5, the limiting portion 34 is disposed in a plate shape and perpendicular to the circuit board 4, so that the limiting portion 34 has a simple structure and occupies a small space, and when the limiting portion 34 is forced to support the key body 31, the acting force can be stably and perpendicularly transmitted to the circuit board 4; set connecting portion 35 into the strip, and one end is connected with spacing portion 34 is perpendicular, and the other end is connected with supporting part 33 is perpendicular, and like this also enables connecting portion 35's occupation space less, makes things convenient for connecting portion 35 atress to twist reverse the deformation energy storage moreover.

In an alternative of the present embodiment, the stopper portion 34 is made of a light shielding material; or the limiting part 34 is made of a semi-transparent material with the thickness of at least 2 mm.

When the limiting part 34 is made of a light-shielding material, the limiting part 34 can partially shield light emitted by the display lamp 2, so that the light emitted by the display lamp 2 can only irradiate the outside through the transparent key 3, light leakage of the display lamp 2 is avoided, and a user can accurately press the transparent key 3; the limiting part 34 is made of a semi-transparent material, and the limiting part 34 can shield light rays emitted by the display lamp 2 and avoid light leakage of the display lamp 2 due to the fact that the thickness of the limiting part 34 is at least 2 mm.

It should be noted that, when the limiting portion 34 is made of transparent plastic by an injection molding process and is integrally formed with the transparent key 3, opaque pigment may be sprayed on the outer peripheral wall of the limiting portion 34 after the injection molding process is completed, so as to ensure the opaque function of the limiting portion 34.

In the alternative of the embodiment, a plurality of groups of the press switches 1, the display lamps 2 and the light-transmitting keys 3 are correspondingly arranged on the circuit board 4 one by one; wherein, a limiting part 34 is connected between two adjacent transparent keys 3.

As shown in fig. 2, the push switch 1, the display lamp 2 and the transparent keys 3 are correspondingly disposed on the circuit board 4 in a plurality of groups one by one, so that different functions can be executed by the plurality of transparent keys 3, and the adjacent two transparent keys 3 share the limiting portion 34, thereby simplifying the structure and saving the manufacturing material.

In an alternative of this embodiment, the key body 31 is provided with a recess on the side facing the display lamp 2; the display lamp 2 can at least partially protrude into the recess.

Specifically, as shown in fig. 3, the depth of the recess of the recessed portion needs to be greater than the height of the projection of the display lamp 2, and when the key body 31 is pressed, the key body 31 does not press the display lamp 2. The depressed part can make the structure of the key body 31 and the display lamp 2 more compact, and the depressed part can also reduce the weight of the key body 31, thereby saving the manufacturing material of the key body 31.

In addition, the embodiment of the application also provides a toaster, which comprises a toaster body 5 and the key switch assembly; wherein, the body 5 is provided with a mounting hole for mounting the light-transmitting key 3.

The toaster comprises the key switch assembly, all the beneficial effects of the toaster can be realized, and the details are not repeated.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.

Claims (10)

1. A key switch assembly, comprising:

a circuit board (4);

a push switch (1) provided on the circuit board (4) and having a push portion (11);

the display lamp (2) is arranged on the circuit board (4);

a light-transmitting key (3) comprising a key body (31), an extrusion part (32) and a support part (33);

wherein, the key body (31) is covered on the display lamp (2);

the pressing part (32) and the supporting part (33) are respectively arranged on two opposite sides of the key body (31), the pressing part (11) is abutted against the pressing part (32), and the supporting part (33) is abutted against the circuit board (4);

when the key body (31) is pressed, the pressing part (32) can rotate around the supporting part (33) and press the pressing part (11).

2. The key switch assembly according to claim 1, wherein the end surface of the support portion (33) abutting against the circuit board (4) is a circular arc surface.

3. The key switch assembly according to claim 1, wherein the light-transmissive key (3) further comprises a stopper (34);

the limiting part (34) is positioned on one side or two sides of the supporting part (33);

one end of the limiting part (34) is connected with the circuit board (4) and used for limiting the installation distance between the light-transmitting key (3) and the circuit board (4).

4. A key switch assembly according to claim 3, characterised in that the circuit board (4) is further provided with a mounting portion;

the limiting part (34) is connected with the circuit board (4) in an installing mode in which one end is inserted into the installing part.

5. A key switch assembly according to claim 3, wherein the position limiting portion (34) is connected to the support portion (33) by a connecting portion (35).

6. The keyswitch assembly of claim 5, wherein the stopper (34) is plate-shaped and is disposed perpendicular to the circuit board (4);

the connecting portion (35) is strip-shaped, one end of the connecting portion (35) is vertically connected with the limiting portion (34), and the other end of the connecting portion is vertically connected with the supporting portion (33).

7. The keyswitch assembly of claim 3, wherein the retainer (34) is made of a light blocking material;

or the limiting part (34) is made of a semi-transparent material with the thickness of at least 2 mm.

8. The keyswitch assembly of claim 3, wherein the push switches (1), the display lamps (2), and the light-transmissive keys (3) are disposed in the circuit board (4) in groups in a one-to-one correspondence;

wherein, the limit part (34) is connected between two adjacent transparent keys (3).

9. The key switch assembly according to any one of claims 1 to 8, wherein a side of the key body (31) facing the display lamp (2) is provided with a recess;

the display lamp (2) can at least partially protrude into the recess.

10. Toaster, comprising a body (5) and a push-button switch assembly according to any of claims 1-9;

wherein, the machine body (5) is provided with a mounting hole for mounting the light-transmitting key (3).

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