Plastic key combination structure for bottom of display
By using a fixing plate and a key circuit board bonding and plugging method in medical displays, the problems of unstable positioning and laborious installation of key combination structures are solved, improving the key feel and space utilization efficiency.
Patent Information
- Application Number
- CN202422756381.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-12
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-11-12
AI Technical Summary
The existing button combination structure of medical displays has problems such as unstable positioning, difficult installation, and large space occupation, resulting in poor touch feel and button jamming.
The mounting plate and the button circuit board are bonded together with double-sided tape. The mounting plate is fixedly connected to the monitor frame with fasteners. The plastic button assembly is pressed together with L-shaped legs and soft rubber strips to avoid screwing. The LED light guide column is fixed by plugging.
It achieves stable positioning of plastic buttons, improves the feel of pressing, reduces installation difficulty, reduces the space occupied inside the monitor, avoids button jamming, and is suitable for various monitors.
Smart Images
Figure CN223612274U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a plastic key combination structure for the bottom of display belongs to display key structure technical field. BACKGROUND
[0002] At present, medical display often adopts OSD (on screen display) mechanical key to display and control, such as opening / closing display, bright-dark adjustment, contrast adjustment, etc. Medical display is mainly thin planar display, and its internal space is limited, so the key combination structure is usually arranged at the bottom of the display in the display, and the plastic key is exposed outside the display. The key combination structure generally comprises a plastic key, a key circuit board, a fixed plate and an LED light guide column. The key circuit board and the LED light guide column are screwed on the fixed plate, and then pressed on the plastic key assembled on the key hole position of the display bottom frame, and then the fixed plate is screwed and fixed with the bottom frame, and the cable led out of the key circuit board is arranged inside the display and connected with the mainboard. From the actual use, it can be found that the following defects exist: first, the plastic keys are generally connected as a whole by a sheet, but do not contact with the inner wall of the display bottom frame, and are only positioned by pressing the fixed plate and the key circuit board on the bottom frame, so that displacement often occurs when pressing, resulting in poor pressing feeling and often causing key jamming. Second, the key circuit board and the LED light guide column in the key combination structure need to be screwed and fixed on the fixed plate, which is laborious to install and very inconvenient to assemble. SUMMARY
[0003] The utility model discloses a plastic key combination structure for the bottom of display, which ensures the positioning effect of the plastic key on the display bottom frame, has good pressing feeling, is compact and reliable, and occupies small internal space of the display.
[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:
[0005] A plastic key combination structure for the bottom of display, comprising a fixed plate, a key circuit board and a plastic key assembly, the plastic key assembly is arranged on the bottom frame of the display frame, the plastic key of the plastic key assembly is exposed outside from the key hole on the bottom frame, the fixed plate is bonded with the key circuit board through double-sided tape, the fixed plate and the key circuit board bonded together are arranged on the plastic key assembly, the key circuit board is interposed between the fixed plate and the plastic key assembly, and the fixed plate is fixedly connected with the bottom frame through a fixing member.
[0006] The utility model has the advantages of:
[0007] 1. The plastic key combination structure is convenient to assemble, saves time and labor, the positioning effect of the plastic key on the bottom frame of the display is good, the pressing hand feeling is good, and the phenomenon of key jamming is avoided.
[0008] 2. The plastic key combination structure is compact and reliable, occupies small internal space of the display, greatly reduces the constraint and influence on the layout and installation of other parts, and is suitable for various purpose displays such as ordinary and medical displays. BRIEF DESCRIPTION OF DRAWINGS
[0009] Figure 1 is a three-dimensional exploded schematic view of the plastic key combination structure of the utility model.
[0010] Figure 2 is Figure 1 a local enlarged view.
[0011] Figure 3 is a structure three-dimensional schematic view of the plastic key assembly.
[0012] Figure 4 is a structure three-dimensional schematic view of the fixed plate and the LED light guide column.
[0013] Figure 5 is an assembly structure schematic view between the fixed plate, the key circuit board and the plastic key assembly from the positive x direction.
[0014] Figure 6 is a schematic view of the plastic key assembly assembled on the bottom frame of the display.
[0015] Figure 7 is a schematic view of the plastic key combination structure of the utility model from the outside of the display.
[0016] Figure 8 is a schematic view of the plastic key combination structure of the utility model from the outside of the display. DETAILED DESCRIPTION
[0017] As Figures 1 to 8 shown, the utility model provides a plastic key combination structure for the bottom of the display, which comprises a fixed plate 10, a key circuit board 50 and a plastic key assembly 60, the plastic key assembly 60 is arranged on the bottom frame 901 of the display frame 90, the plastic key 62 of the plastic key assembly 60 is exposed outside (such as Figure 8 ) from the key hole 94 on the bottom frame 901, the fixed plate 10 is adhered to the key circuit board 50 through double-sided adhesive tape 20, the fixed plate 10 and the key circuit board 50 adhered together are arranged above the plastic key assembly 60, the key circuit board 50 is arranged between the fixed plate 10 and the plastic key assembly 60, and the fixed plate 10 is fixedly connected with the bottom frame 901 through the fixing part 70.
[0018] AsFigure 4 The fixing plate 10 comprises a rectangular plate body 11, and an L-shaped leg 12 is arranged on one long side of the plate body 11, and a soft rubber strip 40 is bonded to another long side of the plate body 11, wherein: when the fixing plate 10 and the key circuit board 50 bonded together are placed on the plastic key assembly 60, the plate body 11 presses the plastic key assembly 60 into the accommodating groove 91 on the bottom frame 901 through the L-shaped leg 12 and the soft rubber strip 40, the thickness of the soft rubber strip 40 is consistent with the height of the L-shaped leg 12 in the z direction, and the key circuit board 50 is arranged between the L-shaped leg 12 and the soft rubber strip 40. The soft rubber strip 40 and the L-shaped leg 12 press and limit the plastic key assembly 60, so that the plastic key 62 is accurately positioned and very firm.
[0019] In the utility model, the plate body 11 is rectangular, and it has two long sides and two short sides, and the two short sides are the two ends of the plate body 11. Figure 2 The long side of the plate body 11 is arranged along the x direction, and the short side is arranged along the y direction. The key circuit board 50 is also rectangular, and the length direction is the x direction, and the width direction is the y direction.
[0020] In actual design, the soft rubber strip 40 is long strip-shaped with a rectangular cross section (generally square), and is arranged along the long side of the plate body 11 or the x direction.
[0021] As shown in Figure 2 The two sides of the bottom frame 901 are vertically provided with edges 92, the accommodating groove 91 is formed between the two edges 92, and the fixing screw hole 93 is arranged on the edge 92 on the corresponding side of the bottom frame 901; the plate body 11 is provided with a through hole 15, and the fixing member 70 is a screw, wherein: after the screw passes through the through hole 15, the screw is screwed into the fixing screw hole 93, so that the fixing plate 10 is screwed and fixed on the bottom frame 901. Preferably, the through hole 15 and the soft rubber strip 40 are located on the same long side of the plate body 11.
[0022] Further, as shown in Figure 4 One long side of the plate body 11 of the fixing plate 10 is recessed with a clamping groove 16, the clamping groove 16 is matched with the clamping block 96 protruding upward on the corresponding edge 92 of the bottom frame 901, so that when the fixing plate 10 is screwed on the bottom frame 901, the fixing plate 10 is clamped on the clamping block 96 through the clamping groove 16, thereby improving the positioning effect of the fixing plate 10 on the bottom frame 901 in the z direction.
[0023] In the utility model, preferably, the fixing screw hole 93 and the clamping block 96 are arranged on the same edge 92 of the bottom frame 901, and the through hole 15 and the clamping groove 16 are located on the same long side of the plate body 11.
[0024] As shown in Figure 4The plate body 11 of the fixing plate 10 is provided with positioning columns 13 at both ends thereof, and the part of the key circuit board 50 extending out of the plastic key assembly 60 in the x direction is provided with positioning holes 51, wherein: when the key circuit board 50 is bonded to the fixing plate 10, the positioning columns 13 of the fixing plate 10 are inserted into the positioning holes 51 of the key circuit board 50, so as to improve the positioning effect between the fixing plate 10 and the key circuit board 50.
[0025] In actual application, the cooperation of the positioning columns 13 and the positioning holes 51 and the fixing of the fixing plate 10 on the bottom frame 901 effectively ensure that the relative position between the plastic keys 62 and the key circuit board 50 in the xy plane will not change, thereby ensuring flexible pressing and rapid response and improving the operation feeling.
[0026] In the utility model, the double-sided adhesive tape 20 is sheet-shaped, has good weather resistance and strong adhesion, and compared with the screw connection mode, effectively saves space.
[0027] As shown in Figure 4 , one of the long sides of the plate body 11 of the fixing plate 10 is provided with an assembly seat 14, the LED light guide column 30 is inserted into the assembly seat 14, and the LED light guide column 30 is arranged in correspondence with the LED light emitter on the key circuit board 50. Generally, the assembly seat 14 is arranged on the long side of the L-shaped leg 12. Figure 2 As shown in , the edge 92 of the corresponding side of the bottom frame 901 is provided with a groove 97 for accommodating the LED light guide column 30.
[0028] Figure 4 Further, as shown in Figure 4 , the LED light guide column 30 comprises a light guide assembly 31, the light guide assembly 31 is arranged on a base 32, the base 32 is provided with a pair of L-shaped hooks 33, and the two L-shaped hooks 33 form a socket 330; the assembly seat 14 comprises a pair of insertion pieces 141 extending from the plate body 11, a fool-proof piece 142 is arranged between the two insertion pieces 141, and the fool-proof piece 142 is inclined relative to the plate body 11; the LED light guide column 30 is inserted into the pair of insertion pieces 141 through the socket 330 of the LED light guide column 30, so as to be inserted and fixed on the fixing plate 10. Generally, the fool-proof piece 142 is inclined upward, so that the wires led out of the LED light guide column 30 can be conveniently connected with the key circuit board 50 located below the fixing plate 10 after the LED light guide column 30 is inserted into the fixing plate 10.
[0029] As can be seen from the above, in the utility model, the LED light guide column 30 is directly inserted into the fixing plate 10, which reduces the space occupied by assembly, and in addition, the fool-proof piece 142 is designed on the fixing plate 10, which plays a good fool-proof role when the LED light guide column 30 is assembled, and ensures the correct direction of the LED light guide column 30 during assembly.
[0030] In actual design, the fixing plate 10 can be integrally formed by plate material except the positioning column 13.
[0031] As Figure 3 , the plastic key assembly 60 includes a rectangular key board 61, the key board 61 is provided with plastic keys 62 downwardly and protrudingly, the structure of the plastic keys 62 is a well-known technology in the art, a circle of vertical edges 610 is provided around the key board 61, the vertical edges 610 are provided with protrusions 63 outwardly and transversely, the protrusions 63 are adapted to the clamping grooves 95 provided on the inner wall of the corresponding one of the two edges 92 of the bottom frame 901, so that the plastic key assembly 60 is placed in the accommodating groove 91 of the bottom frame 901, and the plastic key assembly 60 is clamped in the clamping grooves 95 to improve the positioning effect in the z direction on the bottom frame 901, wherein: when the plastic key assembly 60 is placed in the accommodating groove 91, the key board 61 is clamped between the two edges 92 of the bottom frame 901.
[0032] In actual design, the plastic key assembly 60 is also rectangular, has a long side and a short side, the long side is arranged in the x direction, and the short side is arranged in the y direction, and the protrusions 63 are preferably arranged on the long side. The plastic key assembly 60 is integrally formed by plastic material.
[0033] In the utility model, preferably, the clamping grooves 95 and the clamping blocks 96 are arranged on the same one of the edges 92 of the bottom frame 901.
[0034] As Figure 1 , the key circuit board 50 is electrically connected with the main board in the display through the wire 80. The use of the wire 80 improves the flexibility of the wire and is no longer limited by the space in the display.
[0035] In the utility model, the key circuit board 50 and the wire 80 are existing devices or components. Generally, the key circuit board 50 includes a response circuit for responding to the pressing action of the plastic keys 62 and a processing circuit for processing the response signal.
[0036] In the utility model, the length direction of the bottom frame 901 is defined as the x direction, the direction perpendicular to the x direction in the horizontal plane is defined as the y direction, and the vertical direction or the up-down direction is defined as the z direction, as Figure 2 indicated, in addition, for the x direction, the direction indicated by the arrow is the positive x direction, and the opposite direction is the negative x direction, and the positive and negative directions of the y and z directions are defined in the same way.
[0037] In actual assembly, in the z direction or the negative z direction, the plastic key assembly 60 is first assembled in the accommodating groove 91 of the bottom frame 901 (as Figure 6 , the protrusions 63 are clamped in the clamping grooves 95), and the plastic keys 62 on the plastic key assembly 60 are exposed outside from the key holes 94 on the bottom frame 901 (as Figure 8), then the fixed plate 10 and the key circuit board 50 (the soft rubber strip 40 is arranged between the fixed plate 10 and the key circuit board 50) assembled together by the double-sided tape 20 and the positioning column 13 are placed on the plastic key assembly 60 (the clamping groove 16 is clamped on the clamping block 96), wherein the key circuit board 50 is interposed between the fixed plate 10 and the plastic key assembly 60 (as shown in Figure 5 ), then the fixed plate 10 and the edge 92 of the bottom frame 901 are fixed by the fixing piece 70 (as shown in Figure 7 ), so that the assembly and positioning of the plastic key combined structure on the display bottom frame 901 are completed, and the positioning effect is good.
[0038] It can be understood with reference to Figure 2 , Figure 6 that the design that the keyboard 61 is clamped between the two edges 92 of the bottom frame 901 well limits the movement of the plastic key assembly 60 in the y direction. The matching design of the protrusion 63 and the clamping groove 95 well limits the movement of the plastic key assembly 60 in the x direction. The design that the fixed plate 10 and the key circuit board 50 assembled together press and the fixed plate 10 is fixed with the bottom frame 901 well limits the movement of the plastic key assembly 60 in the z direction. In summary, by the above structure design, the positioning effect of the plastic key 62 on the display bottom frame 901 is good, and the phenomenon of key jamming is well avoided, and the pressing feeling is improved.
[0039] In the utility model, the fixed plate 10 and the key circuit board 50 are fixed by bonding, the LED light guide column 30 is fixed by inserting, no screwing operation is needed, and only the fixed plate 10 and the key circuit board 50 bonded together need to be screwed with the bottom frame 901 after the plastic key assembly 60 is pressed in the containing groove 91 of the display bottom frame 901, so the whole structure of the utility model is very convenient to assemble, compact in structure, small in display internal space occupation, and greatly reduces the restraint and influence on the layout and installation of other parts in the display. In addition, the key circuit board 50 of the utility model is led out by the wire harness 80, and also does not need to occupy too much display internal space, and does not cause the restraint and influence on the layout and installation of other parts.
[0040] The above is the preferred embodiment of the utility model and the technical principle used, for the person skilled in the art, any equivalent transformation, simple replacement and the like based on the technical scheme of the utility model without departing from the spirit and scope of the utility model, all belong to the protection scope of the utility model.
Claims
1. A plastic key combination structure for the bottom of a display, characterized by, The utility model provides a kind of fixed plate, key circuit board and plastic key assembly, the plastic key assembly is placed on the bottom frame of display frame, the plastic key of the plastic key assembly is exposed from the key hole on the bottom frame, the fixed plate is adhered with the key circuit board by double-sided tape, the fixed plate and the key circuit board adhered together are placed on the plastic key assembly, the key circuit board is between the fixed plate and the plastic key assembly, the fixed plate is fixedly connected with the bottom frame by fixing part.
2. The plastic key combination structure for the bottom of a display as claimed in claim 1, wherein, The fixed plate includes a rectangular plate body, one long side of the plate body extends an L-shaped leg, and the other long side of the plate body is adhered with a soft rubber strip. When the fixed plate and the key circuit board adhered together are placed on the plastic key assembly, the plate body presses the plastic key assembly in the accommodating groove on the bottom frame by the L-shaped leg and the soft rubber strip. The key circuit board is between the L-shaped leg and the soft rubber strip.
3. The plastic key combination structure for the bottom of a display as claimed in claim 2, wherein, Both sides of the bottom frame are vertically provided with edges, and the accommodating groove is formed between the edges on both sides. The edge on one side of the bottom frame is provided with a fixed screw hole. The plate body is provided with a through hole, and the fixing part is a screw. The screw is screwed into the fixed screw hole through the through hole to screw the fixed plate to the bottom frame.
4. The plastic key combination structure for the bottom of a display as claimed in claim 3, wherein, One long side of the plate body is recessed with a clamping groove, which is matched with a clamping block protruding upward on the corresponding edge of the bottom frame. When the fixed plate is screwed to the bottom frame, the fixed plate is clamped on the clamping block to improve the positioning effect on the bottom frame.
5. The plastic key combination structure for the bottom of a display as claimed in claim 2, wherein Both ends of the plate body of the fixed plate are downwardly provided with positioning columns, and the portions of both ends of the key circuit board protruding from the plastic key assembly are provided with positioning holes. When the key circuit board is adhered to the fixed plate, the positioning columns of the fixed plate are inserted into the positioning holes of the key circuit board to improve the positioning effect between the fixed plate and the key circuit board.
6. The plastic key combination structure for the bottom of a display as claimed in claim 3, wherein, One long side of the plate body is provided with a mounting seat, an LED light guide column is inserted into the mounting seat, and the LED light guide column is correspondingly arranged with an LED light emitter on the key circuit board. The edge on one side of the bottom frame is provided with a groove for accommodating the LED light guide column.
7. The plastic key combination structure for the bottom of a display as claimed in claim 6, wherein, The LED light guide column includes a light guide assembly arranged on a base. The base is provided with a pair of L-shaped hooks forming a socket. The mounting seat includes a pair of insertion pieces extending from the plate body, and a fool-proof piece is arranged between the two insertion pieces. The fool-proof piece is inclined relative to the plate body. The LED light guide column is inserted into the socket of the LED light guide column to be fixed on the fixed plate.
8. The plastic key combination structure for the bottom of a display as claimed in claim 3, wherein The plastic key assembly comprises a rectangular key board, the key board is provided with the plastic key in a downward protruding manner, a circle of vertical edges is arranged around the key board, the vertical edges are provided with protrusions in an outward transverse protruding manner, the protrusions are matched with the clamping grooves arranged on the inner walls of the corresponding edges of the bottom frame in a recessed manner, so that the plastic key assembly is placed in the accommodating groove of the bottom frame, and the positioning effect of the plastic key assembly on the bottom frame is improved by clamping the protrusions in the clamping grooves, wherein when the plastic key assembly is placed in the accommodating groove, the key board is clamped between the two edges of the bottom frame.
9. The plastic key combination structure for the bottom of a display as claimed in claim 1, wherein, The key circuit board is electrically connected with the main board in the display through a wire.