CN206221510U

CN206221510U - Novel shaft sleeve structure with variable connecting hole

Info

Publication number: CN206221510U
Application number: CN201621094530.8U
Authority: CN
Inventors: 管晋
Original assignee: Zhejiang Changfeng Electronic Co Ltd
Current assignee: Zhejiang Changfeng Electronic Co Ltd
Priority date: 2016-09-30
Filing date: 2016-09-30
Publication date: 2017-06-06
Anticipated expiration: 2026-09-30

Abstract

The utility model discloses a kind of novel shaft sleeve structure with variable connecting hole, including sleeve body, the sleeve body has cylinder lateral wall and is connected to the bottom wall of cylinder lateral wall bottom, the connecting hole for external piece insertion is formed with the sleeve body, the connecting hole has the plug-and-pull port being formed at the top of cylinder lateral wall；The first gap of insertion cylinder lateral wall top, bottom is formed with the cylinder lateral wall, any lateral cross section of the cylinder lateral wall is tool not closed loop configuration jaggy；The second gap is formed with the bottom wall, second gap area is in the bottom in foregoing first gap.When in the connecting hole of external piece insertion sleeve body, the first gap and the second gap can become big under external force, the size of connecting hole is become big therewith, in this way, external piece is few with sleeve body contact wear in swapping process, it is ensured that contact conducting is reliable and stable；This kind of novel shaft sleeve can be widely applied on the field of switches products such as mechanical keyboard switch, key switch.

Description

Novel shaft sleeve structure with variable connecting hole

Technical field

The utility model is related to the accessory of the field of switches such as mechanical keyboard switch, key switch, and referring in particular to one kind has The novel shaft sleeve structure of variable connecting hole.

Background technology

As shown in Figure 1 to Figure 3, which show conventional art in be applied to switch on axle sleeve structure, B is general for the axle sleeve It is to be molded using drawing process, the internal diameter of axle sleeve B is fixed；Using when, be using external piece A insertions axle sleeve B in, make external piece A and axle sleeve B is formed and is in close contact, in fact, external piece A weares and teares each other with axle sleeve B in swapping process, is easily caused the two and is connect There is gap, influence contact conducting in synapsis.

Accordingly, it would be desirable to work out a kind of new technical scheme to solve the above problems.

Utility model content

In view of this, in view of the existing deficiencies of the prior art, its main purpose is to provide that a kind of have can to the utility model Become connecting hole novel shaft sleeve structure, the connecting hole of its sleeve body in external piece insertion process, by the change ambassador in gap The size for obtaining connecting hole becomes big therewith so that external piece is few with sleeve body contact wear in swapping process, it is ensured that contact Conducting is reliable and stable.

To achieve the above object, the utility model is using following technical scheme：

A kind of novel shaft sleeve structure with variable connecting hole, includes sleeve body, and the sleeve body has cylinder Side wall and the bottom wall for being connected to cylinder lateral wall bottom, are formed with the connecting hole for external piece insertion in the sleeve body, described Connecting hole has the plug-and-pull port being formed at the top of cylinder lateral wall；Insertion cylinder lateral wall top, bottom are formed with the cylinder lateral wall First gap at end, any lateral cross section of the cylinder lateral wall is tool not closed loop configuration jaggy；On the bottom wall The second gap is formed with, second gap area is in the bottom in foregoing first gap.

Used as a kind of preferred scheme, second gap includes the branch slot of more than three, all branch slots One end converges in the centre of bottom wall, wherein the other end of a branch slot is communicated in the bottom in foregoing first gap.

Used as a kind of preferred scheme, all branch slots are distributed on bottom wall.

Used as a kind of preferred scheme, the connecting hole is circular port, and the bottom wall is hemispherical wall.

Used as a kind of preferred scheme, first gap extends in the same direction setting with cylinder lateral wall.

As a kind of preferred scheme, integrally upwardly extended around the top correspondence plug-and-pull port of the cylinder lateral wall and be formed with Toward the guiding walls of outer arcuate gradual change.

Used as a kind of preferred scheme, the top one level of the guiding walls extends be formed with transverse wall outward.

Used as a kind of preferred scheme, the sleeve body is extruding cans part.

Used as a kind of preferred scheme, the sleeve body is copper alloy part.

The utility model has clear advantage and beneficial effect compared with prior art, specifically, by above-mentioned technology Scheme understands that it is mainly by forming the first gap on the cylinder lateral wall of sleeve body, in shape on the bottom wall of sleeve body Into there is the second gap, second gap area is in the bottom in foregoing first gap；When external piece inserts the connection of sleeve body When in hole, the first gap and the second gap can become big under external force, the size of connecting hole is become big therewith, in this way, external Part is few with sleeve body contact wear in swapping process, it is ensured that contact conducting is reliable and stable；This kind of novel shaft sleeve can be extensive It is applied on the field of switches products such as mechanical keyboard switch, key switch.

More clearly to illustrate architectural feature of the present utility model and effect, come right with specific embodiment below in conjunction with the accompanying drawings The utility model is described in detail.

Brief description of the drawings

Fig. 1 is the dimensional structure diagram of conventional art bottom bracket axle；

Fig. 2 is the cut-away view of axle sleeve shown in Fig. 1；

Fig. 3 is the process schematic in external piece insertion axle set in conventional art；

Fig. 4 be the utility model embodiment one in novel shaft sleeve dimensional structure diagram；

Fig. 5 is another angle dimensional structure diagram of novel shaft sleeve shown in Fig. 4；

Fig. 6 is J direction views in Fig. 4；

Fig. 7 is K direction views in Fig. 4；

Fig. 8 be the utility model embodiment one in external piece insertion axle set in process schematic；

Fig. 9 be the utility model embodiment two in novel shaft sleeve top view.

Accompanying drawing identifier declaration：

A, external piece B, axle sleeve

C, external piece D, axle sleeve

10th, cylinder lateral wall 11, the first gap

12nd, guiding walls 13, transverse wall

14th, groove 20, bottom wall

21st, the second gap 211, branch slot

30th, connecting hole 12 ', guiding walls

13 ', transverse wall.

Specific embodiment

Refer to shown in Fig. 4 to Fig. 9, that show two kinds of concrete structures of embodiment of the utility model；This kind new Profile shaft nested structure includes sleeve body, and the sleeve body has cylinder lateral wall 10 and is connected to the bottom of the bottom of cylinder lateral wall 10 Wall 20, is formed with the connecting hole 30 for external piece C insertion in the sleeve body, the connecting hole 30 has and is formed at cylinder side The plug-and-pull port at the top of wall 10.

The first gap 11 of the top of insertion cylinder lateral wall 10, bottom is formed with the cylinder lateral wall 10, generally, described One gap 11 extends in the same direction setting with cylinder lateral wall 10；Any lateral cross section of the cylinder lateral wall 10 is tool patent jaggy Close loop configuration；The second gap 21 is formed with the bottom wall 20, second gap 21 is communicated in foregoing first gap 11 Bottom.The connecting hole 30 of sleeve body becomes the big size for causing connecting hole therewith in external piece C insertion process by gap Become big so that external piece C is few with sleeve body contact wear in swapping process, it is ensured that contact conducting is reliable and stable.

Preferably, second gap 21 includes the branch slot 211 of more than three, the one of all branch slots 211 End converges in the centre of bottom wall 20, wherein the other end of a branch slot 211 is communicated in the bottom in foregoing first gap 11； Herein, the connecting hole 30 is circular port, and the bottom wall 20 is hemispherical wall, and all branch slots 211 are distributed on bottom wall 20. The guiding walls 12 being formed with toward outer arcuate gradual change are integrally upwardly extended around the top correspondence plug-and-pull port of the cylinder lateral wall 10, The top one level of the guiding walls 12 extends be formed with transverse wall 13 outward, is formed on the guiding walls 12, transverse wall 13 There is groove 14；Shown in comparison diagram 6 and Fig. 9, it is known that, two kinds of guiding walls of embodiment, different (such as Fig. 9 of the structure of transverse wall Shown guiding walls 12 ', transverse wall 13 ').When novel shaft sleeve as herein described is made, the general side using extruding cans Formula, can select the copper alloys such as brass or phosphor-copper.

Design focal point of the present utility model is that it is mainly by the seam of formation first on the cylinder lateral wall of sleeve body Gap, in the second gap is formed with the bottom wall of sleeve body, second gap area is in the bottom in foregoing first gap；When outer When in the connecting hole of fitting insertion sleeve body, the first gap and the second gap can become big under external force, make connecting hole Size becomes big therewith, in this way, external piece is few with sleeve body contact wear in swapping process, it is ensured that contact conducting stabilization can Lean on；This kind of novel shaft sleeve can be widely applied on the field of switches products such as mechanical keyboard switch, key switch.

The above, is only preferred embodiment of the present utility model, and not technical scope of the present utility model is made Any limitation, therefore every any trickle amendment, equivalent change made to above example according to technical spirit of the present utility model Change and modify, still fall within the range of technical solutions of the utility model.

Claims

1. a kind of novel shaft sleeve structure with variable connecting hole, it is characterised in that：Include sleeve body, the sleeve body With cylinder lateral wall and the bottom wall for being connected to cylinder lateral wall bottom, the connection for external piece insertion is formed with the sleeve body Hole, the connecting hole has the plug-and-pull port being formed at the top of cylinder lateral wall；Insertion cylinder lateral wall is formed with the cylinder lateral wall Top, the first gap of bottom, any lateral cross section of the cylinder lateral wall is tool not closed loop configuration jaggy；It is described The second gap is formed with bottom wall, second gap area is in the bottom in foregoing first gap.

2. the novel shaft sleeve structure with variable connecting hole according to claim 1, it is characterised in that：Second gap The branch slot of more than three is included, one end of all branch slots converges in the centre of bottom wall, wherein a branch stitches The other end of gap is communicated in the bottom in foregoing first gap.

3. the novel shaft sleeve structure with variable connecting hole according to claim 2, it is characterised in that:All branch slots It is distributed on bottom wall.

4. the novel shaft sleeve structure with variable connecting hole according to claim 3, it is characterised in that:The connecting hole is Circular port, the bottom wall is hemispherical wall.

5. the novel shaft sleeve structure with variable connecting hole according to claim 1, it is characterised in that:First gap Setting is extended in the same direction with cylinder lateral wall.

6. the novel shaft sleeve structure with variable connecting hole according to claim 1, it is characterised in that:The cylinder lateral wall Top correspondence plug-and-pull port around integrally upwardly extend the guiding walls being formed with toward outer arcuate gradual change.

7. the novel shaft sleeve structure with variable connecting hole according to claim 6, it is characterised in that:The guiding walls Top one level extends be formed with transverse wall outward.

8. the novel shaft sleeve structure with variable connecting hole according to claim 6, it is characterised in that:The sleeve body It is extruding cans part.

9. the novel shaft sleeve structure with variable connecting hole according to claim 8, it is characterised in that:The sleeve body It is copper alloy part.