CN114156111A

CN114156111A - A satellite shaft assembly and key

Info

Publication number: CN114156111A
Application number: CN202111517039.7A
Authority: CN
Inventors: 李晨曦; 周佳鑫
Original assignee: Dongguan Togran Electronics Technology Co ltd
Current assignee: Dongguan Togran Electronics Technology Co ltd
Priority date: 2021-12-13
Filing date: 2021-12-13
Publication date: 2022-03-08
Anticipated expiration: 2041-12-13
Also published as: CN114156111B

Abstract

The invention discloses a satellite shaft assembly and a key, wherein the satellite shaft assembly comprises two satellite shaft cores and a balance rod, the satellite shaft cores are respectively provided with an inserting groove, the balance rod is provided with two inserting rods respectively positioned at two sides and a connecting rod connected between the rear ends of the two inserting rods, and the front ends of the inserting rods extend into the inserting grooves; the inserting groove is rear end open-ended blind hole, the front end of inserted bar has the circular arc rolling surface, the front end of inserted bar passes through the circular arc rolling surface and the interior top surface of inserting groove, interior bottom surface forms the roll cooperation, the lower extreme downwardly protruding of circular arc rolling surface exceeds the downside of inserted bar, thus, through the roll cooperation mode, be favorable to improving the abnormal sound, and simultaneously, the inserted bar can effectively avoid the die joint of satellite axle core, the gap of inserting groove and inserted bar is controllable within 0.05mm, further reduce or even avoid the sound that the balancing pole striking satellite shaft hole sent, and, adopt this satellite shaft subassembly structure, can consider that the technology of buying oil of cancellation still can satisfy low abnormal sound or even no abnormal sound requirement, save man-hour and promote the yield.

Description

Satellite shaft assembly and key

Technical Field

The invention relates to the technical field of keys, in particular to a satellite shaft assembly and a key.

Background

As shown in fig. 9 and 10, the conventional satellite shaft assembly includes two satellite shaft cores 1 and a balance bar 2, the satellite shaft cores 1 are respectively provided with an insertion groove 5, the balance bar 2 is provided with two insertion bars 3 respectively located at two sides and a connecting bar 4 connected between rear ends of the two insertion bars 3, and a front end of the insertion bar 3 extends into the insertion groove 5. During the use, balancing pole 2 is at the downthehole removal in-process of satellite axle core 1, because the precision problem in hole, can form the equipment clearance with balancing pole 2, when strikeing the key cap fast, the inserted bar 3 of balancing pole 2 will strike the sound that the satellite shaft hole sent, with the sound contrast of strikeing of axle itself, just is noise (also called abnormal sound). And the parting surface of the manufactured satellite shaft core 1 is criticized to have a cutting edge just at the position of the movable clamping point 7 of the satellite shaft, and the movable clearance can be influenced by the cutting edge, so that the clearance between the inserting groove 5 and the inserting rod 3 is larger. At present, for the scheme of eliminating the impact sound for beat node oil, this process operation of buying oil is difficult, and the yield is not high, and satellite axle core 6 positions of buying oil are the through-hole moreover, and lubricating grease can scatter in the through-hole, and the controllability is not strong, and if the oil mass is few can lubricate not enough, the oil mass can spill over and cause the sticky of feeling.

Therefore, a new technical solution is needed to solve the above problems.

Disclosure of Invention

In view of the above, the present invention provides a satellite shaft assembly and a key thereof, which are adapted to improve abnormal sound by a rolling fit, and at the same time, an inserted link can effectively avoid a parting surface of a satellite shaft core, a gap between an insertion slot and the inserted link can be controlled within 0.05mm, so as to further reduce or even avoid a sound generated by a balance link striking a satellite shaft hole.

In order to achieve the purpose, the invention adopts the following technical scheme:

a satellite shaft assembly comprises two satellite shaft cores and a balance rod, wherein each satellite shaft core is provided with an insertion groove, each balance rod is provided with two insertion rods which are respectively positioned at two sides and a connecting rod which is connected between the rear ends of the two insertion rods, and the front ends of the insertion rods extend into the insertion grooves; the plug groove is a blind hole with an opening at the rear end, the front end of the plug rod is provided with an arc rolling surface, and the front end of the plug rod is in rolling fit with the inner top surface and the inner bottom surface of the plug groove through the arc rolling surface; the lower end of the arc rolling surface protrudes downwards to exceed the lower side surface of the inserted bar.

As a preferable scheme, the arc rolling surface has an arc rolling track on a front-back vertical cross section, the arc rolling track is a major arc, one end of the arc rolling track is connected to the top of the front end of the inserted link, and the other end of the arc rolling track is connected to the bottom of the front end of the inserted link.

Preferably, grease is arranged in the insertion groove close to the front end.

As a preferred scheme, the vertical cross-section of direction of the left and right sides of inserted bar is the rectangle, the inserted bar has top surface, bottom surface, left surface and right flank, the arc rolling surface extends along the preceding arc of the front end top of inserted bar, and the arc extends down again, and the arc extends to be connected to the front end bottom of inserted bar backward again.

Preferably, the left end and the right end of the connecting rod respectively extend beyond the inserted rods on the two sides.

Preferably, the outer surface of the inserted rod is a plastic surface.

As a preferred scheme, the satellite shaft assembly further comprises two satellite shaft seats, the satellite shaft core is installed in the satellite shaft seats, a rotating groove is formed in the rear end of each satellite shaft seat, the rear end of each insertion rod is connected with a rotating portion, and the rotating portions are rotatably arranged in the rotating grooves.

As a preferred scheme, the inserted link and the rotating part are integrated into a plastic part; the outer surface of the connecting rod is a plastic surface, and a reinforcing metal wire is embedded in the connecting rod.

As a preferred scheme, the front end of the inner bottom surface of the insertion groove is connected with an avoiding inclined surface which extends forwards and downwards in an inclined mode, and gaps are kept among the lower side surface of the insertion rod, the inner bottom surface of the insertion groove and the avoiding inclined surface.

A key comprising a key body having a satellite axle assembly as claimed in any preceding claim.

Compared with the prior art, the satellite shaft assembly structure has the obvious advantages and beneficial effects, and particularly, according to the technical scheme, the inserting groove is designed into the blind hole, the arc rolling surface is arranged at the front end of the inserting rod, the front end of the inserting rod is in rolling fit with the inner surface of the inserting groove through the arc rolling surface, and the lower end of the arc rolling surface protrudes downwards to exceed the lower side surface of the inserting rod. Even if the oil is pumped, the blind hole is more easily controlled in oil quantity, the operation is convenient,

secondly, the inserted link is designed into plastic, and the satellite shaft core is also a plastic part, so that the matching of the satellite shaft core and the balance rod is changed into the matching of the plastic part and the plastic part, and the abnormal sound can be further effectively eliminated; meanwhile, the structural design of the inserted bar and the arc rolling surface is combined, so that the rotation action of the inserted bar in the insertion groove is stable and smooth.

To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Drawings

FIG. 1A is a front view of an embodiment of the present invention;

FIG. 1B is a side view of an embodiment of the present invention;

FIG. 2 is a top view of an embodiment of the present invention;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is an assembled view of two satellite hubs and a stabilizer bar according to an embodiment of the invention;

FIG. 5 is an exploded view of two satellite hubs and a stabilizer bar according to an embodiment of the present invention;

FIG. 6 is a cross-sectional view of two satellite hubs and a balance bar of an embodiment of the present invention;

FIG. 7 is an assembled view of a key (including a keycap) according to an embodiment of the invention;

FIG. 8 is a cross-sectional view of a key (including a keycap) according to an embodiment of the present invention;

FIG. 9 is a diagram of a key structure representative of the prior art;

fig. 10 is another angular partial assembly view of the satellite hub and stabilizer bar of fig. 9.

The attached drawings indicate the following:

satellite axle core 10 inserting groove 11

Inner top surface 111 and inner bottom surface 112

Rear inner end surface 113 avoiding inclined surface 114

Balance bar 20 inserted link 21

Arc rolling surface 211 arc rolling track 212

Rotating part 213 link 22

Satellite axle seat 30 rotation groove 31

Mechanical shaft 40 positioning plate 50

PCB 60 keycap 70

And a grease 80.

Detailed Description

Referring to fig. 1 to 8, specific structures of the embodiments of the present invention are shown.

In the description of the present invention, it should be noted that, for the orientation words, such as the terms "upper", "lower", "front", "rear", "left", "right", etc., indicating the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation and operation, and should not be construed as limiting the specific scope of the present invention.

A satellite shaft assembly comprises two satellite shaft cores 10 and a balance rod 20, wherein each satellite shaft core 10 is provided with an insertion groove 11, each balance rod 20 is provided with two insertion rods 21 positioned on two sides respectively and a connecting rod 22 connected between the rear ends of the two insertion rods 21, and the front ends of the insertion rods 21 extend into the insertion grooves 11; the plug groove 11 is a blind hole with an opening at the rear end, the front end of the plug rod 21 is provided with an arc rolling surface 211, and the front end of the plug rod 21 is in rolling fit with the inner top surface 111 and the inner bottom surface 112 of the plug groove 11 through the arc rolling surface 211; the lower end of the arc rolling surface 211 protrudes downward beyond the lower side surface of the insertion rod 21. The inserted bar 21 can effectively avoid the parting surface of the satellite shaft core 10, and the gap between the inserted groove 11 and the inserted bar 21 can be controlled within 0.05 mm.

The arc rolling surface 211 is provided with an arc rolling track 212 on the vertical cross section in the front-back direction, the arc rolling track 212 is an arc, one end of the arc rolling track 212 is connected to the top of the front end of the inserted rod 21, and the other end of the arc rolling track 212 is connected to the bottom of the front end of the inserted rod 21.

By adopting the satellite shaft assembly structure, the requirement of low abnormal sound or even no abnormal sound can be met even without oil pumping process, the working time is saved and the yield is improved. Even if the oil is pumped, the oil quantity of the blind hole is easy to control, the operation is convenient, the oil is pumped inwards from the rear end opening of the insertion groove 11, and the lubricating grease 80 is arranged in the insertion groove 11 close to the front end.

As shown in fig. 3, the inner surface of the insertion groove 11 includes a left inner side surface, a right inner side surface, an inner top surface 111, an inner bottom surface 112, and a rear inner end surface 113, the front end of the inner bottom surface 112 is connected to an avoidance inclined surface 114 extending obliquely forward and downward, the front end of the inner top surface 111 exceeds the front ends of the inner bottom surface 112 and the avoidance inclined surface 114, and a gap is maintained between the lower side surface of the insertion rod 21 and both the inner bottom surface 112 and the avoidance inclined surface 114 of the insertion groove 11.

Vertical cross-section of left and right directions of inserted bar 21 is the rectangle, inserted bar 21 has top surface, bottom surface, left surface and right flank, circular arc rolling surface 211 extends along the preceding arc of inserted bar 21's front end top, and the arc extends down again, and the arc extends to be connected to the front end bottom of inserted bar 21 backward again.

The outer surface of the inserted rod 21 is a plastic surface, the satellite shaft core 10 is also a plastic part, and the matching of the satellite shaft core 10 and the balance rod 20 is changed into the matching of the plastic part and the plastic part, so that the abnormal sound can be further effectively eliminated.

The satellite shaft assembly further comprises two satellite shaft seats 30, the satellite shaft core 10 is installed in the satellite shaft seats 30, a rotating groove 31 is formed in the rear end of each satellite shaft seat 30, a rotating portion 213 is connected to the rear end of each inserted rod 21, and the rotating portion 213 can be rotatably arranged in the rotating groove 31. The insertion rod 21 and the rotating part 213 are an integrated plastic part. The left end and the right end of the connecting rod 22 respectively extend beyond the two insertion rods 21, specifically, the rotating portion 213 is connected to the rear end of the insertion rod 21 and extends beyond the left side and the right side of the insertion rod 21, so that the rotating portion 213 and the insertion rod 21 form a T-shaped structure, and the rotating balance of the rotating portion 213 relative to the rotating groove 31 is improved. Preferably, the outer surface of the connecting rod 22 is a plastic surface, and a reinforcing metal wire is embedded in the connecting rod 22, so that the requirement of the plastic use contact surface and the requirement of the overall structural strength of the balance bar are both considered. .

As shown in fig. 8 to 9, a key comprises a key body, the key body has a satellite axle assembly as described above, and the key body further comprises a mechanical axle 40, a positioning plate 50, a PCB 60 and a key cap 70.

The invention is mainly characterized in that the insertion groove 11 is designed into a blind hole, the front end of the insertion rod 21 is provided with an arc rolling surface 211, the front end of the insertion rod 21 is in rolling fit with the inner top surface 111 and the inner bottom surface 112 of the insertion groove 11 through the arc rolling surface 211, and the lower end of the arc rolling surface 211 protrudes downwards to exceed the lower side surface of the insertion rod 21, so that abnormal sound is improved through a rolling fit mode, meanwhile, the insertion rod 21 can effectively avoid the parting surface of the satellite shaft core 10, the gap between the insertion groove 11 and the insertion rod 21 can be controlled within 0.05mm, sound generated by the balance rod 20 impacting a satellite shaft hole is further reduced or even avoided, and the satellite shaft assembly structure can be considered to cancel a oiling process, still meet the requirements of low abnormal sound or even no abnormal sound, save working hours and improve the yield. Even if the oil is pumped, the blind hole is more easily controlled in oil quantity, the operation is convenient,

secondly, the inserted link 21 is designed to be plastic, and the satellite shaft core 10 is also a plastic part, so that the matching of the satellite shaft core 10 and the balance bar 20 is changed into the matching of the plastic part and the plastic part, and the abnormal sound can be further effectively eliminated; meanwhile, the structural design of the insertion rod 21 and the arc rolling surface 211 is combined, so that the rotation of the insertion rod 21 in the insertion groove 11 is stable and smooth.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any minor modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the technical scope of the present invention.

Claims

1. A satellite shaft assembly, comprising two satellite shaft cores and a balance rod, the satellite shaft cores all have insertion slots, and the balance rod has two insertion rods located on both sides respectively and is connected to two The connecting rod between the rear ends of the insertion rods, the front ends of the insertion rods extend into the insertion grooves; it is characterized in that:

The insertion slot is a blind hole with an open rear end, the front end of the insertion rod has a circular arc rolling surface, and the front end of the insertion rod forms a rolling fit with the inner top surface and inner bottom surface of the insertion slot through the circular arc rolling surface. ; The lower end of the circular arc rolling surface protrudes downward beyond the lower side of the insertion rod.

2 . The satellite shaft assembly according to claim 1 , wherein the circular arc rolling surface has a circular arc rolling track located on a vertical section in the front-rear direction, and the circular arc rolling track is a superior arc, so 2 . One end of the arc rolling track is connected to the top of the front end of the plunger, and the other end of the arc rolling track is connected to the bottom of the front end of the plunger.

3 . The satellite shaft assembly according to claim 1 , wherein a grease is provided near the front end of the insertion groove. 4 .

4. A satellite shaft assembly according to claim 1, 2 or 3, wherein the vertical cross-section of the left-right direction of the plunger is a rectangle, and the plunger has a top surface, a bottom surface, a left side and a On the right side, the circular arc rolling surface extends forward in an arc along the top of the front end of the insertion rod, then extends downward in an arc, and then extends backward in an arc to connect to the bottom of the front end of the insertion rod.

5 . The satellite shaft assembly according to claim 1 , wherein the left and right ends of the connecting rod respectively extend beyond the insertion rods on both sides. 6 .

6 . The satellite shaft assembly according to claim 1 , wherein the outer surface of the insertion rod is a plastic surface. 7 .

7 . The satellite shaft assembly according to claim 6 , wherein the satellite shaft assembly further comprises two satellite shaft bases, the satellite shaft cores are installed in the satellite shaft bases, and the satellite shaft bases are installed in the satellite shaft bases. 8 . The rear end of the rod is provided with a rotating groove, the rear end of the insertion rod is connected with a rotating part, and the rotating part is rotatably arranged in the rotating groove.

8 . The satellite shaft assembly according to claim 7 , wherein the insertion rod and the rotating part are integrated into a plastic part; the outer surface of the connecting rod is a plastic surface, and the inside of the connecting rod is embedded with a plastic part. 9 . Reinforced wire.

9 . The satellite shaft assembly according to claim 1 , wherein the front end of the inner bottom surface of the insertion slot is connected with an avoidance slope extending obliquely forward and downward, and the lower side of the insertion rod is connected with the insertion rod. 10 . The inner bottom surface of the connecting groove and the avoidance slope are kept clear.

10. A key, comprising a key body, wherein the key body has a satellite shaft assembly as claimed in any one of claims 1 to 9.