Middle plate integrated with shaft housing and keyboard

Abstract

The utility model discloses a middle plate of an integrated shaft housing and a keyboard, the middle plate of the integrated shaft housing comprises a middle plate main body, and the middle plate main body is provided with a key movable through hole; a shaft shell is integrally formed on the middle plate main body and comprises an upper shaft shell and a lower shaft shell which are correspondingly arranged up and down; the upper shaft shell integrally extends upwards from the top of the middle plate main body and is arranged around the key movable through hole; the lower shaft shell integrally extends downwards from the bottom of the middle plate main body and is arranged around the key movable through hole, the bottom of the lower shaft shell integrally and horizontally extends inwards to form a bottom plate part, an up-down through shaft hole is formed in the bottom plate part, and the top of the bottom plate part integrally and upwards extends to form a guide shaft wall around the shaft hole; and an annular groove is formed between the outer ring surface of the guide shaft wall and the inner ring surface of the lower shaft shell. In this way, the shaft shells are integrated on the middle plate, the cost of independent production and assembly of the upper shaft shell and the lower shaft shell is saved, and the product quality and the production efficiency are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the keyboard field technology especially is a kind of middle plate and keyboard of integrated shaft shell. BACKGROUND

[0002] In prior art, keyboard generally includes upper cover, middle plate, circuit board, bottom cover and several keys, key movable through hole is provided on middle plate, and the key includes top cover, base, cross shaft core, spring and key cap, top cover, base, cross shaft core, spring and key cap are assembled to form single key, then single key is assembled in key movable through hole on middle plate.

[0003] It has the following shortcomings:

[0004] 1, top cover, base need to be separately injection molded to make, and the mold cost, injection molding cost and assembly cost of each other are not conducive to the further control of production cost;

[0005] 2, because the key on the market is single, for magnetic shaft keyboard, each key needs to be independently made and tested, needs a series of jigs and testing equipment, and the whole production and testing cost is high;And, limited by the assembly tolerance of key and middle plate, the position precision of different keys relative to middle plate is deviated, which is not conducive to the precision control of magnetic shaft, and affects the quality consistency;

[0006] 3, the shaft core guide rail formed by the assembly of top cover and base has precision limitation due to production and assembly tolerance, so there is a larger guiding movement tolerance of cross shaft core in top cover and base, which causes the up-down movement of cross shaft core and key cap to be large, and the consumer experience of keyboard is poor.

[0007] Therefore, a new technical scheme needs to be researched to solve the above problems. UTILITY MODEL CONTENTS

[0008] Therefore, the utility model mainly aims at the defects of prior art, and provides a kind of middle plate and keyboard of integrated shaft shell, which integrates shaft shell on middle plate, saves the cost of separate production and assembly of upper and lower shaft shells, and improves product quality and production efficiency.

[0009] To achieve the above object, the utility model adopts the following technical scheme:

[0010] A kind of middle plate of integrated shaft shell, including middle plate main body, key movable through hole is provided on the middle plate main body;

[0011] The middle plate body is integrally formed with an axle shell, which comprises an upper axle shell and a lower axle shell arranged correspondingly in up and down directions; the upper axle shell integrally extends upward from the top of the middle plate body and surrounds the key movable through hole; the lower axle shell integrally extends downward from the bottom of the middle plate body and surrounds the key movable through hole, the bottom of the lower axle shell integrally extends inward horizontally to form a bottom plate part, the bottom plate part is provided with an axle hole penetrating through the bottom plate part in up and down directions, and a guide axle wall integrally extends upward from the top of the bottom plate part and surrounds the axle hole; an annular groove is formed between the outer ring surface of the guide axle wall and the inner ring surface of the lower axle shell.

[0012] As a preferred solution, the key movable through hole, the axle hole and the annular groove are arranged around the same central axis.

[0013] As a preferred solution, the inner ring surface of the upper axle shell is concavely provided with a buckling guide groove, which extends vertically.

[0014] As a preferred solution, the inner ring surface of the upper axle shell is convexly provided with a plurality of guide convex ribs, which extend vertically.

[0015] As a preferred solution, the bottom plate part is provided with a clearance through hole corresponding to the buckling guide groove.

[0016] As a preferred solution, the bottom of the bottom plate part is convexly provided with a first supporting leg for abutting against a circuit board and a second supporting leg for penetrating through a positioning hole on the circuit board, and the downward extending length of the second supporting leg is greater than that of the first supporting leg.

[0017] As a preferred solution, a plurality of key movable through holes are arranged on the middle plate body and are arranged in a plurality of rows, and the middle plate body is provided with a deformed long groove; the deformed long groove is arranged between adjacent rows of key movable through holes and / or between adjacent key movable through holes.

[0018] A keyboard comprises an upper cover, a middle plate, a circuit board, a bottom cover and a plurality of keys; the upper cover, the middle plate, the circuit board and the bottom cover are arranged in sequence from top to bottom.

[0019] The middle plate is the middle plate with an integrated axle shell as described in any one of the preceding aspects.

[0020] The key comprises a movable axle core, a key cap and a spring; the key cap is arranged on the top of the movable axle core; the movable axle core has a downward extending guide axle part, the guide axle part is provided with a magnet, the movable axle core extends into the axle shell, the guide axle part extends into the axle hole, and the spring is sleeved on the outer periphery of the guide axle part, and the upper and lower ends of the spring act between the movable axle core and the bottom plate part, respectively.

[0021] As a preferred solution, the bottom of the guide shaft part is concave upward with a mounting hole, and the magnet is installed in the mounting hole.

[0022] As a preferred solution, the inner wall surface of the mounting hole is provided with a plurality of vertical ribs, and the magnet is tightly fitted with the vertical ribs.

[0023] The utility model discloses compared with prior art has apparent advantages and beneficial effects, and from above technical scheme can know, it is mainly through with the axle shell integrated on the middle plate, saves the cost of separately producing and assembling upper and lower axle shells, and improves product quality and production efficiency, in particular, the axle shell is integrally formed on the middle plate main part, and the axle shell includes upper axle shell and lower axle shell corresponding arranged, the upper axle shell is integrally extended upward from the top of middle plate main part and is arranged around the key movable through -hole, the lower axle shell is integrally extended downward from the bottom of middle plate main part and is arranged around the key movable through -hole, the bottom of lower axle shell is integrally extended to the inside horizontally and forms the bottom plate part, and the bottom plate part is provided with the axle hole that passes through up and down, and the top of bottom plate part extends upward integrally around axle hole and has guide axle wall, and the annular groove is formed between the outer ring surface of guide axle wall and the inner ring surface of lower axle shell, without extra making the top cover and base of traditional key, the cost of separately injection moulding and assembling of the top cover and base of traditional key is saved, the cost of traditional key assembly on the middle plate is reduced, all movable axle cores are directly integrated and assembled on the middle plate, and unified assembly, batch testing are convenient, and production efficiency is improved, cost is reduced, and in addition, since the movable axle core of each key is installed on the middle plate as the installation reference, the assembly tolerance of key and middle plate is reduced, the magnet and hall precision are improved, and quality consistency is achieved. And the axle shell is integrally formed on the middle plate main part, the problem of split parts of the axle core guide rail of the top cover and base of traditional key is avoided, the movable axle core is stable in up and down movement, key cap shaking is reduced, and consumer experience is improved.

[0024] In order to make the structure characteristics and functions of the utility model clearer, the utility model will be described in detail below by combining with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is the assembly perspective view of a plurality of keys, middle plates and circuit boards of the embodiment of the utility model;

[0026] Figure 2 is another assembly perspective view of a plurality of keys, middle plates and circuit boards of the embodiment of the utility model;

[0027] Figure 3 is the exploded view (top view state) of a plurality of keys, middle plates and circuit boards of the embodiment of the utility model;

[0028] Figure 4is a partial exploded view (in a three-dimensional state) of a plurality of keys, a middle plate and a circuit board of an embodiment of the present utility model;

[0029] Figure 5 is another partial exploded view (in a three-dimensional state) of a plurality of keys, a middle plate and a circuit board of an embodiment of the present utility model;

[0030] Figure 6 is an assembly view (in a top view state) of a plurality of keys, a middle plate and a circuit board of an embodiment of the present utility model;

[0031] Figure 7 is Figure 6 a cross-sectional view at A-A;

[0032] Figure 8 is Figure 7 an enlarged view at C;

[0033] Figure 9 is Figure 6 a cross-sectional view at B-B;

[0034] Figure 10 is Figure 9 an enlarged view at D;

[0035] Figure 11 is a top view of a middle plate of an integrated shaft housing of an embodiment of the present utility model.

[0036] Explanation of the attached drawings: middle plate 10', middle plate main body 10, key movable through hole 11, shaft housing 12, upper shaft housing 121, buckling guide groove 1211, guide convex rib 1212, lower shaft housing 122, bottom plate part 1221, shaft hole 1222, guide shaft wall 1223, annular groove 1224, first stroke stop convex part 1225, empty through hole 1226, first support leg 1227, second support leg 1228, deformation long groove 101, cantilever 102, boss 103, movable shaft core 21, guide shaft part 211, magnet 2111, mounting hole 2112, vertical convex strip 2113, buckling arm 212, second stroke stop convex part 213, spring 22, circuit board 30. DETAILED DESCRIPTION

[0037] Please refer to Figures 1 to 11 , which shows the specific structure of an embodiment of the present utility model.

[0038] In the description of the utility model, it is necessary to explain that the terms "upper", "lower", "left", "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0039] A middle plate 10' of integrated shaft shell, comprising a middle plate body 10, the middle plate body 10 is provided with key movable hole 11, the middle plate body 10 is integrally formed with shaft shell 12, for example, by injection molding, obtain the middle plate of integrated shaft shell;The shaft shell 12 comprises the upper and lower corresponding upper shaft shell 121 and lower shaft shell 122;The upper shaft shell 121 is integrally extended upwards from the top of the middle plate body 10 and is arranged around the key movable hole 11;The lower shaft shell 122 is integrally extended downwards from the bottom of the middle plate body 10 and is arranged around the key movable hole 11, the bottom of the lower shaft shell 122 is integrally extended inwards to form a bottom plate part 1221, the bottom plate part 1221 is provided with a shaft hole 1222 passing through the bottom plate part 1221, the top of the bottom plate part 1221 is integrally extended upwards around the shaft hole 1222 to form a guide shaft wall 1223, the lower shaft shell 122 is wrapped around the outer periphery of the guide shaft wall 1223, and an annular groove 1224 is formed between the outer annular surface of the guide shaft wall 1223 and the inner annular surface of the lower shaft shell 122.The key movable hole 11, the shaft hole 1222 and the annular groove 1224 are all arranged around the same central axis.

[0040] The inner annular surface of the upper shaft shell 121 is concavely provided with a buckling guide groove 1211, and the buckling guide groove 1211 is vertically extended.

[0041] The inner annular surface of the upper shaft shell 121 is convexly provided with a plurality of guide convex ribs 1212, the guide convex ribs 1212 are vertically extended, and generally, the guide convex ribs 1212 are provided on the four side surfaces of the inner annular surface of the upper shaft shell 121, the protruding surface of the guide convex rib 1212 is used to contact the movable core shaft, the contact area is reduced, the friction is reduced, the movable core shaft moves up and down more smoothly, and the gap between the outer peripheral surface of the movable core shaft and the inner annular surface of the upper shaft shell 121 can effectively solve the problem that the key is stuck when used due to the entry of a small amount of dust, which is equivalent to using the gap to contain dust.

[0042] The bottom of the bottom plate part 1221 is provided with a first supporting leg 1227 for abutting against the circuit board, and a second supporting leg 1228 for passing through a positioning hole on the circuit board, the downward extending length of the second supporting leg 1228 being greater than that of the first supporting leg 1227. Generally, the first supporting leg 1227 is arranged at the four corners of the bottom plate part, while the second supporting leg 1228 is arranged between the two pairs of side clearance holes 1226 on both sides of the shaft hole 1222.

[0043] The middle plate body 10 is provided with a plurality of key movable holes 11, arranged in a plurality of rows, and is provided with a deformed long groove 101; the deformed long groove 101 is arranged between adjacent rows of key movable holes 11, and / or between adjacent key movable holes 11. Furthermore, the outer periphery of the middle plate body 10 extends outwardly with a cantilever 102 corresponding to the outer periphery of the circuit board 30, and the bottom of the middle plate body 10 is provided with a boss 103 corresponding to the outer periphery of the circuit board 30, arranged corresponding to the cantilever 102.

[0044] Furthermore, a keyboard is provided, comprising an upper cover, a middle plate, a circuit board 30, a bottom cover and a plurality of keys; the upper cover, the middle plate, the circuit board 30 and the bottom cover are arranged in sequence from top to bottom; wherein the upper cover and the bottom cover are not shown in the figure, and are common components for the keyboard. The middle plate is the above-mentioned middle plate 10' with an integrated shaft shell; the circuit board 30 is provided with a through hole 31.

[0045] The key comprises a movable shaft core 21, a key cap and a spring 22, the key cap is not shown in the figure, the shape of the key cap can be varied, as long as it can be installed on the top of the movable shaft core 21, generally, the top of the movable shaft core 21 is provided with a cross-shaped connecting part for connecting the key cap, the movable shaft core 21 has a downward extending guide shaft part 211, the guide shaft part 211 is provided with a magnet 2111, the movable shaft core 21 extends into the shaft shell 12, the guide shaft part 211 extends into the shaft hole 1222, the spring 22 is sleeved on the outer periphery of the guide shaft part 211, the upper and lower ends of the spring 22 act between the movable shaft core 21 and the bottom plate part 1221 respectively. The bottom of the guide shaft part 211 is concave upward to form a mounting hole 2112, the magnet 2111 is installed in the mounting hole 2112. Generally, the mounting hole 2112, the magnet 2111 and the guide shaft part 211 are arranged on the same center axis. The inner wall surface of the mounting hole 2112 is provided with a plurality of vertical ribs 2113, the magnet 2111 is tightly fitted with the vertical ribs 2113; the vertical ribs 2113 are used to improve the assembly stability, so that after the magnet 2111 is installed from the lower end opening of the mounting hole 2112, it can be tightly embedded in the mounting hole 2112.

[0046] In addition, the bottom plate part 1221 is provided with a first stroke stop protrusion 1225 corresponding to the outer periphery of the guide shaft wall 1223; generally, the first stroke stop protrusion 1225 is provided with two, which are respectively located on both opposite sides of the outer periphery of the guide shaft wall 1223. The bottom of the clamping arm 212 of the movable shaft core 21 is provided with a second stroke stop protrusion 213, the second stroke stop protrusion 213 is arranged vertically opposite to the corresponding first stroke stop protrusion 1225, the bottom surface of the second stroke stop protrusion 213 and the top surface of the first stroke stop protrusion 1225 are used as stroke limiting.

[0047] The utility model discloses a design emphasis lies in, it is mainly through the axle shell integration on the middle plate, saves the cost of separately producing and assembling upper and lower axle shell, and improves product quality and production efficiency, in particular, the middle plate main body is integrally formed with the axle shell, and the axle shell includes upper axle shell and lower axle shell that correspond to set up, and the upper axle shell is integrally extended upwards from the top of the middle plate main body and is arranged around the key movable hole, and the lower axle shell is integrally extended downwards from the bottom of the middle plate main body and is arranged around the key movable hole, and the bottom of the lower axle shell is integrally extended inwards horizontally and forms the bottom plate part, and the bottom plate part is provided with the axle hole that passes through up and down, and the top of the bottom plate part is integrally extended upwards around the axle hole and has the guide axle wall, and the annular groove is formed between the outer ring surface of the guide axle wall and the inner ring surface of the lower axle shell, does not need to make the top cover and base of traditional key additionally, saves the cost of separately injection moulding and assembling of the top cover and base of traditional key respectively, reduces the cost of traditional key assembly on the middle plate, all movable axle cores are directly integrated and assembled on the middle plate, and it is convenient to realize unified assembly, batch testing, and it is favorable to improve production efficiency, reaches the reduction cost, and because the movable axle core of every key is installed with the middle plate as the reference, reduces the assembly tolerance of key and middle plate, improves the magnet and hall precision, thereby reaches the quality consistency, and the axle shell is integrally formed on the middle plate main body, avoids the problem that the axle core guide rail of the top cover and base of traditional key has the split part, makes the movable axle core move stably up and down, and the key cap shakes and reduces, thereby improves the consumer experience.

[0048] The above is only the preferred embodiment of the utility model, and does not limit the technical range of the utility model, so any slight modification, equivalent change and modification according to the technical essence of the utility model to the above embodiment still belong to the range of the utility model technical scheme.

Claims

1. An integrated shaft shell middle plate, comprising a middle plate body (10) provided with a key movable hole (11), characterized in that: the middle plate body (10) is integrally provided with a shaft shell (12), the shaft shell (12) comprises an upper shaft shell (121) and a lower shaft shell (122) arranged correspondingly; the upper shaft shell (121) integrally extends upward from the top of the middle plate body (10) and is arranged around the key movable hole (11); the lower shaft shell (122) integrally extends downward from the bottom of the middle plate body (10) and is arranged around the key movable hole (11), the bottom of the lower shaft shell (122) integrally extends inward horizontally to form a bottom plate part (1221), the bottom plate part (1221) is provided with a shaft hole (1222) penetrating upward and downward, and the top of the bottom plate part (1221) integrally extends upward around the shaft hole (1222) to form a guide shaft wall (1223), and an annular groove (1224) is formed between the outer ring surface of the guide shaft wall (1223) and the inner ring surface of the lower shaft shell (122). The key movable hole (11), the shaft hole (1222), and the annular groove (1224) are arranged around the same central axis.

2. An integrated axle housing mid plate according to claim 1, wherein: The inner ring surface of the upper shaft shell (121) is concavely provided with a buckling guide groove (1211) extending vertically.

3. The midplate of an integrated shaft housing of claim 1, wherein: The inner ring surface of the upper shaft shell (121) is convexly provided with a plurality of guide convex ribs (1212) extending vertically.

4. The center plate of an integrated axle housing of claim 1 wherein: The bottom plate part (1221) is provided with an empty hole (1226) corresponding to the buckling guide groove (1211).

5. An integrated axle housing mid plate according to claim 3 wherein: The bottom of the bottom plate part (1221) is convexly provided with a first supporting leg (1227) for abutting against a circuit board and a second supporting leg (1228) for penetrating through a positioning hole on the circuit board, and the downward extension length of the second supporting leg (1228) is greater than that of the first supporting leg (1227).

6. The center plate of an integrated axle housing of claim 1 wherein: The middle plate body (10) is provided with a plurality of key movable holes (11) arranged in a plurality of rows, and is provided with a deformation long groove (101); the deformation long groove (101) is arranged between adjacent rows of key movable holes (11) and / or between adjacent key movable holes (11).

7. An integrated axle housing mid plate according to claim 1 wherein: Comprising an upper cover, a middle plate, a circuit board, a bottom cover, and a plurality of keys; the upper cover, the middle plate, the circuit board, and the bottom cover are sequentially arranged from top to bottom; 8. A keyboard, characterized by: The middle plate is the integrated shaft shell middle plate of any one of claims 1 to 7. ​ The key comprises a movable shaft core (21), a key cap and a spring (22), the key cap is arranged on the top of the movable shaft core (21), the movable shaft core (21) has a downward extending guide shaft part (211), a magnet (2111) is arranged on the guide shaft part (211), the movable shaft core (21) extends into the shaft shell (12), the guide shaft part (211) extends into the shaft hole (1222), the spring (22) is sleeved on the outer periphery of the guide shaft part (211), the upper and lower ends of the spring (22) act on the movable shaft core (21) and the bottom plate part (1221) respectively.

9. The keyboard of claim 8, wherein: The bottom of the guide shaft part (211) is concave upward and has a mounting hole (2112), the magnet (2111) is arranged in the mounting hole (2112).

10. The keyboard of claim 9, wherein: The inner wall surface of the mounting hole (2112) is provided with a plurality of vertical protrusions (2113), the magnet (2111) is tightly assembled with the vertical protrusions (2113).

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