CN220085885U - Key module and display device - Google Patents

Abstract

The utility model discloses a key module and a display device, which are characterized by comprising the following components: the mounting board is used for bearing the circuit board and is provided with a mounting structure for mounting to external equipment, the surface of the circuit board is provided with a contact switch and a wire terminal for connecting wires, and the button is abutted to the contact switch and mounted on the surface of the circuit board. According to the technical scheme, the key module can be independently disassembled, and the operation can be performed without opening the equipment to expose the main board, so that the operation difficulty is greatly reduced.

Description

Key module and display device

Technical Field

The present utility model relates to the field of electronic devices, and more particularly, to a key module and a display device.

Background

At present, a commercial tablet adopting an infrared touch mode basically realizes touch screen operation, but at least a power key is a physical key. Because often press the operation and inevitably make button failure or damage, and current button is usually integrated on display device's mainboard, and maintenance change button needs to open equipment in order to dismantle etc. operation on the mainboard, and complex operation is, if weld the part operation degree of difficulty is bigger. Therefore, how to simply replace the key becomes a technical problem to be solved by the present utility model.

Disclosure of Invention

In view of the above, the present utility model provides a key module and a display device to overcome the above technical problems.

According to the technical scheme of the utility model, a key module is provided, which comprises: the mounting board is used for bearing the circuit board and is provided with a mounting structure for mounting to external equipment, the surface of the circuit board is provided with a contact switch and a wire terminal for connecting wires, and the button is abutted to the contact switch and mounted on the surface of the circuit board.

Preferably, the mounting structure comprises a bending plate comprising a mounting plane perpendicular to the mounting plate, the mounting plane being provided with mounting holes.

Preferably, the button includes a flexible portion, a fixing portion mounted on a surface of the circuit board, and a pressing portion abutting against the contact switch, the pressing portion being connected to the fixing portion through the flexible portion so that the pressing portion can spring with respect to the fixing portion.

Preferably, the flexible portion includes an elongated body, both ends of the elongated body are connected to the pressing portion and the fixing portion, respectively, and the elongated body is disposed around a surface of the pressing portion.

Preferably, the key module includes a limiting plate for limiting the bouncing direction of the pressing part, the pressing part protrudes along a surface perpendicular to the circuit board, and the limiting plate is mounted on the circuit board and provided with a limiting opening matched with the outer wall of the pressing part so as to allow the pressing part to pass through.

Preferably, the mounting plate, the circuit board, the fixing portion and the limiting plate are provided with mutually matched assembly holes, so that the circuit board, the button and the limiting plate are sequentially stacked and mounted on the mounting plate through fasteners.

Preferably, a light source is provided on a surface of the circuit board, and the limiting plate is a transparent member, and light emitted from the light source can be transmitted from the limiting plate.

Preferably, the light source comprises a plurality of light beads disposed around the button.

Preferably, the button abuts against the contact switch through a buffer.

According to the technical scheme of the utility model, the display device is further provided, and is characterized by comprising a device main body and the key module, wherein the key module is detachably arranged on the side wall of the device main body through the mounting part, and the outer surface of the button is flush with the outer surface of the device main body.

According to the technical scheme, the key unit is detachably arranged on the display device through the mounting plate, the mounting is simple, the key unit can be connected with the device main board without welding, the dismounting and replacing operations can be performed without opening the device to expose the main board, and the operation difficulty is greatly reduced.

Additional features and advantages of the utility model will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

FIG. 1 is an exploded view of a key module according to one embodiment of the present utility model;

fig. 2 is a schematic diagram illustrating a key module and a display device bezel according to an embodiment of the present utility model.

Description of the reference numerals

1: a mounting plate;

101: a load bearing plane;

102: a bending plate;

103: a screw hole;

2: a circuit board;

201: a contact switch;

202: a first fitting hole;

203: a lamp bead;

204: a first positioning hole;

3: a button;

301: a flexible portion;

302: a fixing part;

3021: a positioning part;

303: a pressing part;

304: an outer wall;

305: a second fitting hole;

4: a limiting plate;

401: a limit opening;

402: a third fitting hole;

403: a second positioning hole;

5: a buffer body;

6: a decorative plate;

7: and (5) a bolt.

Detailed Description

The technical scheme of the present utility model will be described in detail below with reference to the accompanying drawings in combination with embodiments.

According to an aspect of the present utility model, there is provided a key module including: the mounting board 1 is used for bearing the circuit board 2 and is provided with a mounting structure for mounting to external equipment, the surface of the circuit board 2 is provided with a contact switch 201 and a wire terminal for connecting wires, and the button 3 is abutted against the contact switch 201 and mounted on the surface of the circuit board 2.

By using the key module, the key unit is detachably arranged on the display equipment through the mounting plate 1, the installation is simple, the key unit can be connected with the equipment main board without welding, the disassembling and replacing operations can be performed without opening the equipment to expose the main board, and the operation difficulty is greatly reduced.

In this solution, the circuit board 2 is provided with a contact switch 201 for controlling the device, for example, the opening or closing of the device can be controlled by the contact switch 201, and a signal generated by operating the contact switch 201 can be transmitted to the device through a wire, and the wire is detachably mounted on a wire terminal on the circuit board 2. The button 3 is mounted on the surface of the circuit board 2 and abuts against the contact switch 201, and the button 3 may be fixed to the circuit board 2 by means of, for example, a spring or a flexible material, etc., so that the button 3 can be compressed in a pressing trigger direction of the contact switch 201, so that pressure can be transmitted to the contact switch 201 by pressing the button 3, and the contact switch 201 is pressed down to operate the apparatus; and can extend the push button 3 to maintain the contact switch in the lifted state by repulsive force of the contacts themselves of the contact switch 201 without applying pressure. The mounting board 1 has a bearing plane 101 for mounting the circuit board 2 to bear the circuit board 2 and is mounted on the device by a mounting structure, which may take various suitable forms, for example, a key module may be inserted into a mounting groove reserved in the device body and mounted by means of a buckle or a bolt; the key module can be mounted on the reserved mounting position of the equipment main body in a mode of a cover plate and the like, and then the cover plate is buckled to mount the key module and the equipment main body, so long as the mounting structure can facilitate the key module to be dismounted from the equipment main body and mounted on the equipment main body, and the mounting structure is not limited.

Through this technical scheme, button module detachable installs in equipment, when needing to maintain or change operation such as the button, only need alone with button module tear down can, need not open equipment and expose the mainboard to with the operation such as solder joint fusing, greatly reduced the operation degree of difficulty, and reduced maintenance cost.

The mounting structure may take a suitable form to facilitate the removal of the key module, and according to a preferred embodiment, as shown in fig. 1 and 2, comprises a bending plate 102, said bending plate 102 comprising a mounting plane perpendicular to the mounting plate 1, said mounting plane being provided with mounting holes.

In this technical scheme, the button module can insert the mounting groove that equipment was reserved to fix a position in the mounting groove through the installation plane button module of bent plate 102, it is fixed with the equipment main part from the mounting hole through the bolt, wherein, bent plate 102 can be provided with a plurality of, as shown in fig. 1 or 2, and bent plate 102 symmetry sets up in the both sides at mounting plate top, in order to promote the stability of button module installation.

Through this technical scheme, key module can be installed through bolt and equipment main part, and dismantlement and installation only need can accomplish through pine loose bolt or screw up the bolt.

The push button 3 may take a suitable form so as to be able to transmit a pressure to the contact switch 201, and according to a preferred embodiment, the push button 3 comprises a flexible portion 301, a fixed portion 302 mounted to a surface of the circuit board 2, and a pressing portion 303 abutting against the contact switch 201, the pressing portion 303 being connected to the fixed portion 302 by the flexible portion 301 so that the pressing portion 303 can spring with respect to the fixed portion 302.

In this solution, the pressing portion 303 abuts against a contact of the contact switch 201 and is connected to the fixed portion 302 by the flexible portion 301, and the flexible portion 301 may take various forms so that the pressing portion 303 can spring relative to the fixed portion 302, for example: the flexible portion 301 may be in a form that does not generate resistance force so that when the pressing portion 303 is pressed, the button 3 is compressed, the pressing portion 303 moves in the pressing direction against the repulsive force of the contact until the applied pressure is greater than the repulsive force of the contact, the contact is depressed to complete the operation, and when the pressing portion 303 is stopped being pressed, the button 3 receives the repulsive force of the contact itself to return to the extension, and no pressure is applied to the contact switch 201 any more; the flexible portion 301 may be an elastic body, which can keep the button 3 extended, and when the pressing portion 303 is pressed, it is necessary to resist the contact and the repulsive force generated by the flexible portion 301 at the same time to complete the pressing operation, so long as the button 3 can transmit pressure to the contact switch 201 when pressed and can keep extended when no pressure is applied, which is not limited herein.

By means of the solution, the contact switch 201 can be triggered by pressing the button 3, and the button 3 is kept in an extended state at ordinary times to avoid starting the contact switch 201.

The flexible portion 301 may take a suitable form to enable the pressing portion 303 to spring, and according to a preferred embodiment, as shown in fig. 1, the flexible portion 301 includes an elongated body, both ends of which are connected to the pressing portion 303 and the fixing portion 302, respectively, the elongated body being disposed around a surface of the pressing portion 303.

In this embodiment, the pressing portion 303 may have a circular surface, but may also have other shapes of surfaces such as a rectangle, an ellipse, an elongated shape, etc., which are shown here by way of example only, and as shown in fig. 1, the flexible portion 301 may include two elongated bodies, which may be elastic bodies, respectively symmetrically extend from two ends of the diameter of the pressing portion 303, and are connected to the fixing portion 302 around 1/4 of the circumference of the pressing portion 303, and the fixing portion 302 is fixed to the circuit board 2.

In this embodiment, the button 3 is held in the extended state by the elastic flexible portion 301, and can be sprung with respect to the fixed portion 302.

Because of the flexible feature of the flexible portion 301, the pressing portion 303 may also have a possibility of moving in other directions (e.g., in a plane where the surface of the pressing portion 303 is located), so that unnecessary shaking may easily occur, and in order to avoid shaking of the pressing portion 303 in other directions, according to a preferred embodiment, the key module includes a limiting plate 4 for limiting the flicking direction of the pressing portion 303, the pressing portion 303 protrudes along a direction perpendicular to the surface of the circuit board 2, and the limiting plate 4 is mounted on the circuit board 2 and provided with a limiting opening 401 matching with the outer wall 304 of the pressing portion 303 for the pressing portion 303 to pass through.

In this embodiment, the limiting plate 4 may have a surface parallel to the circuit board, and may cover the entire button 3 to be fixed to the surface of the circuit board 2, the limiting opening 401 forms a channel for the pressing portion 303 to move, and the channel defined by the limiting opening 401 limits the pressing portion 303 to move only along the extending direction of the channel (i.e., the direction perpendicular to the surface of the circuit board 2).

Through this technical scheme, the limit of limit mouth 401 is passed through to the pressing portion 303, has limited the range of elasticity of pressing portion 303, has avoided rocking of pressing portion 303.

The circuit board 2, the button 3 and the limiting plate 4 may be connected to the mounting board 1 in a suitable form, and according to a preferred embodiment, as shown in fig. 1, the mounting board 1, the circuit board 2, the fixing portion 302 and the limiting plate 4 are provided with mutually matched assembly holes, so that the circuit board 2, the button 3 and the limiting plate 4 are sequentially stacked and mounted on the mounting board 1 by means of the fastening member 7.

In this technical scheme, fastener 7 can be the bolt, bear plane 101 can be offered and screw 103 with the screw matching of bolt, circuit board 2, fixed part 302 and limiting plate 4 can be offered first pilot hole 202, second pilot hole 305 and the third pilot hole 402 that the aperture is greater than screw 103 in proper order for fastener 7 passes third pilot hole 402, second pilot hole 305 and first pilot hole 202 in proper order and is connected with screw 103, so that circuit board 2, button 3 and limiting plate 4 are installed to mounting panel 1. And since the apertures of the first, second and third fitting holes 202, 305 and 402 are larger than the diameters of the screw portions of the bolts, in order to avoid displacement of the circuit board 2, the button 3 and the stopper plate 4 due to loosening of the fastener 7 and to facilitate positioning of the circuit board 2, the button 3 and the stopper plate 4 during installation, the fixing portion 302 may include positioning portions 3021 protruding to both sides perpendicular to the surface of the pressing portion 303, and the surface of the circuit board 2 and the surface of the stopper plate 4 may be provided with first and second positioning holes 204, 403, respectively, which are matched with the positioning portions 3021, and the positioning holes may be through holes or blind holes, by inserting the positioning portions 3021 into the positioning holes, the circuit board 2 and the stopper plate 4 can be positioned with the button 3 so that displacement cannot be generated.

Through this technical scheme, can make circuit board 2, button 3 and limiting plate 4 install mounting panel 1.

In order to be able to display the key positions as well as the current device status, according to a preferred embodiment, the surface of the circuit board 2 is provided with light sources, and the limiting plate 4 is a transparent member, the light emitted by the light sources being transmitted from the limiting plate 4.

In this technical solution, the light source may take various forms, such as a light emitting diode, a light emitting plate, etc., and the limiting plate 4 may transmit the light emitted by the light source, where the light source may be installed at a plurality of positions of the circuit board 2, so that the light can be uniformly transmitted from the limiting plate 4.

By means of the technical scheme, the key module can achieve various prompt functions, such as prompting the position of the button 3 and displaying the state (such as starting up, standby, shutting down and the like) of the current equipment.

The light source may take a suitable form to emit light uniformly, and according to a preferred embodiment, as shown in fig. 1, comprises a plurality of light beads 203 arranged around the button 3.

In this technical solution, the light sources include four light beads 203, and of course, the light beads 203 may be of other numbers, which is not limited herein, so that the light emitted by the light sources is not blocked and irradiates the limiting plate 4, the light beads 203 surround the button 3 to avoid the light from being blocked by the button 3, and the light beads 203 can emit light of different colors to feed back the current state of the device, for example, white represents on-state, orange represents standby, and so on.

Through this technical scheme, the light that the light source launched can be unobstructed shine limiting plate 4 to transmit through transparent limiting plate 4.

In order to avoid that the contact switch 201 directly feeds back an impact to the push button 3 when the push button 3 is pressed, according to a preferred embodiment, said push button 3 abuts against said contact switch 201 via the buffer body 5.

In this technical scheme, buffer body 5 can imbed to pressing portion 303 so that it is fixed in button 3, and buffer body 5 can be the silica gel gasket, and contact switch 201 passes through buffer body 5 with the feedback to button 3 to partial impact force when making contact switch 201 push down the spring is absorbed by buffer body 5, in order to reduce the impact that button 3 received, and can produce the damping at the in-process of pressing button 3.

By this technical scheme, the buffer body 5 can absorb part of the impact when the contact switch 201 is sprung up, and generate damping in the pressing process, thereby improving the pressing feeling of the push button 3.

According to an aspect of the present utility model, there is also provided a display apparatus including an apparatus main body and a key module as described above, the key module being detachably mounted to a side wall 8 of the apparatus main body through the bending plate 102, and an outer surface of the button being flush with an outer surface of the apparatus main body.

In general, the button will be installed on the front of the display device, but in this way, the button will occupy the display area visually, and the frame will be thickened in order to avoid the button, so this technical scheme provides a detachable key module installed on the side of the device. In this technical scheme, display device is provided with the mounting groove at the lateral wall 8 of equipment main part, and the button module can insert this mounting groove to make curved plate 102 and the fixed plate 802 laminating of mounting groove opening both sides, and can make mounting panel 1 detachably install in the lateral wall 8 of equipment main part through the bolt. Wherein, the limit opening 401 of the limit plate 4 may have a convex outer edge, and the pressing portion 303 may protrude from the surface of the limit plate 4 and be flush with the outer edge, and the sidewall 8 of the apparatus body may be provided with a through hole matching with the outer edge, so that the outer edge of the limit opening 401 is embedded, thereby exposing the pressing portion 303 to the outside of the apparatus body. The pressing portion 303 may have a recess on a surface thereof, and the decorative plate 6 may be fitted into the recess so that the surface thereof is flush with the pressing portion 303, and the decorative plate may be made of the same material as the apparatus body so that the pressing portion 303 exposed to the apparatus body is visually unified with the apparatus body.

At this time, most of the stopper plate is covered by the apparatus main body, and only the outer edge of the protruding stopper opening 401 is visible from the outside of the apparatus, visually showing as a frame having a certain thickness surrounding the pressing portion 303. When limiting plate 4 is transparent, the light that the light source launched can be followed this frame transmission to, through the state of different luminous effect can show current equipment.

The display equipment of the utility model can be large-screen touch display equipment such as an interactive electronic whiteboard and a multimedia teaching all-in-one machine, and the display equipment is used for teaching, conference demonstration and the like.

Through this technical scheme, button module detachable installs in the lateral wall 8 of equipment main part, has avoided crowding to take up the display area, can significantly reduce the thickness of frame to detachable button module has reduced the dismantlement degree of difficulty of button.

The preferred embodiments of the present utility model have been described in detail above, but the present utility model is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present utility model within the scope of the technical concept of the present utility model, and all the simple modifications belong to the protection scope of the present utility model.

In addition, the specific features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described further.

Moreover, any combination of the various embodiments of the utility model can be made without departing from the spirit of the utility model, which should also be considered as disclosed herein.

Claims (7)

1. A key module, comprising: the circuit board comprises a mounting plate (1), a circuit board (2) and a button (3), wherein the mounting plate (1) is used for bearing the circuit board (2) and is provided with a mounting structure for mounting to external equipment, the surface of the circuit board (2) is provided with a contact switch (201) and a wire terminal for connecting wires, and the button (3) is abutted against the contact switch (201) and is mounted on the surface of the circuit board (2);

the mounting structure comprises a bending plate (102), wherein the bending plate (102) comprises a mounting plane perpendicular to the mounting plate (1), and the mounting plane is provided with a mounting hole;

the button (3) comprises a flexible part (301), a fixed part (302) arranged on the surface of the circuit board (2) and a pressing part (303) abutted against the contact switch (201), wherein the pressing part (303) is connected with the fixed part (302) through the flexible part (301) so that the pressing part (303) can spring relative to the fixed part (302);

the flexible portion (301) includes an elongated body, both ends of which are respectively connected to the pressing portion (303) and the fixing portion (302), the elongated body being disposed around a surface of the pressing portion (303).

2. The key module according to claim 1, characterized in that the key module comprises a limiting plate (4) for limiting the bouncing direction of the pressing part (303), the pressing part (303) protrudes along the surface perpendicular to the circuit board (2), and the limiting plate (4) is mounted on the circuit board (2) and provided with a limiting opening (401) matched with the outer wall (304) of the pressing part (303) for the pressing part (303) to pass through.

3. The key module according to claim 2, wherein the mounting plate (1), the circuit board (2), the fixing portion (302) and the limiting plate (4) are provided with mutually matched assembly holes, so that the circuit board (2), the button (3) and the limiting plate (4) are sequentially stacked and mounted on the mounting plate (1) through fasteners (7).

4. A key module according to claim 2 or 3, characterized in that the surface of the circuit board (2) is provided with a light source and the limiting plate (4) is a transparent member, the light emitted by the light source being transmitted from the limiting plate (4).

5. The key module according to claim 4, characterized in that the light source comprises a plurality of light beads (203) arranged around the button (3).

6. The key module according to claim 1, characterized in that the button (3) abuts against the contact switch (201) through a buffer body (5).

7. A display device comprising a device body and a key module according to any one of claims 1 to 6, the key module being detachably mounted to a side wall (8) of the device body by means of the mounting plate (1), and an outer surface of the button being flush with an outer surface of the device body.