阅读说明：本技术 一种不可逆消间隙螺母 (A kind of irreversible gap nut that disappears ) 是由 曾凯 吴志敢 袁武锋 邹一明 刘光玉 于 2018-05-22 设计创作，主要内容包括：本发明涉及一种不可逆消间隙螺母,包括分别具有内螺纹的第一螺母本体和第二螺母本体,所述的螺母还包括一个可径向内缩的内缩环,该内缩环置于第一螺母本体和第二螺母本体之间；所述的第一螺母本体和第二螺母本体与所述的内缩环连接侧分别设有螺母本体倒角,所述的内缩环与螺母本体倒角的对应位置设有内缩环倒角；所述的螺母安装后,所述的内缩环提供的内缩力通过倒角将第一螺母本体和第二螺母本体推开,从而消除螺母轴向间隙。与现有技术相比,本发明具有消间隙的效果更好而均匀等优点。(The present invention relates to a kind of irreversible gap nut that disappears, the first nut body and the second nut body including being respectively provided with internal screw thread, the nut further include one can radially inside contract inside contract ring, this inside contracts ring and is placed between the first nut body and the second nut body；First nut body and the second nut body and the described ring connecting side that inside contracts are respectively equipped with nut body chamfering, and the described corresponding position for inside contracting ring and nut body chamfering, which is equipped with, inside contracts ring chamfering；After the nut installation, the power that inside contracts for inside contracting ring offer is pushed open the first nut body and the second nut body by chamfering, to eliminate nut axial gap.Compared with prior art, the present invention have many advantages, such as to disappear gap effect it is more preferable and uniform.)

1. a kind of irreversible gap nut that disappears, the first nut body and the second nut body including being respectively provided with internal screw thread, Be characterized in that, the nut further include one can radially inside contract inside contract ring, this inside contracts ring and is placed in the first nut body and Between two nut bodies；First nut body and the second nut body and the ring connecting side that inside contracts are respectively equipped with spiral shell Maternal body chamfering, the described corresponding position for inside contracting ring and nut body chamfering, which is equipped with, inside contracts ring chamfering；

After the nut installation, the power that inside contracts for inside contracting ring offer passes through chamfering for the first nut body and the second nut Ontology is pushed open, to eliminate nut axial gap.

2. nut according to claim 1, which is characterized in that the nut body chamfering and the angle for inside contracting ring chamfering Deviation is less than 9.8 °.

3. nut according to claim 1 or 2, which is characterized in that the chamfer angle for inside contracting ring chamfering is 6.8 ° ~47.8 °.

4. nut according to claim 3, which is characterized in that the chamfer angle for inside contracting ring chamfering be 12 °~ 28.2°。

5. nut according to claim 1, which is characterized in that it is described inside contract ring be coil spring, clip, O-ring or Other have the elastic construction for inside contracting elastic force.

6. nut according to claim 1 or 5, which is characterized in that the ring that inside contracts is hatch frame or is not open Structure.

7. nut according to claim 6, which is characterized in that described when to inside contract ring be hatch frame, described inside contracts Ring length is 50% or more or 50% or less of its whole circumference.

8. nut according to claim 6, which is characterized in that the ring that inside contracts is infundibulate centrum.

9. nut according to claim 1, which is characterized in that the described ring that inside contracts includes external rings and inner loop, described The ring chamfering that inside contracts be located in inner loop, the external rings squeeze inner loop on the outside, and what the inner loop provided inside contracts Power is pushed open the first nut body and the second nut body by chamfering, to eliminate nut axial gap.

10. nut according to claim 9, which is characterized in that the inner loop is hatch frame or the knot that is not open Structure.

11. nut according to claim 10, which is characterized in that when the inner loop is hatch frame, described is interior Portion's ring length is 50% or more or 50% or less of its whole circumference.

12. nut according to claim 10, which is characterized in that the inner loop is infundibulate cone.

13. nut according to claim 9, which is characterized in that the inner loop is a piece of, two panels or multi-disc.

14. nut according to claim 9, which is characterized in that the ring chamfer angle that inside contracts of the inner loop side is 6.8 °~45.2 °.

15. nut according to claim 14, which is characterized in that the ring chamfer angle that inside contracts of the inner loop side is 9.8 °~25.5 °.

Technical field

The present invention relates to a kind of nuts, more particularly, to a kind of irreversible gap nut that disappears.

Background technique

Miniature screw rod and nut has very extensive utilization in motion control field.And nut is using a period of time Can all occur some abrasion conditions later, the gap of appearance can cause the error of position when nut changes the direction of motion how The kinematic error is eliminated, the aspect that screw thread pair precision needs to consider first is exactly improved.

Existing technology is that (such as Chinese patent discloses using the nuts of the axial two identical leads of connection of spring on the market Number it is CN201003581Y), to apply axial thrust or pulling force, enable nut that load to be overcome to eliminate gap, this scheme The shortcomings that be, when loading bigger, it will reaction force is applied to axially placed spring so that the clearance system that disappears occur it is inverse To movement, while error will will increase.

Summary of the invention

It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of irreversible gaps that disappears Nut.

The purpose of the present invention can be achieved through the following technical solutions:

A kind of irreversible gap nut that disappears, the first nut body and the second nut body including being respectively provided with internal screw thread, The nut further include one can radially inside contract inside contract ring, this inside contracts ring and is placed in the first nut body and the second nut body Between；First nut body and the second nut body inside contracts ring connecting side and is respectively equipped with nut body with described Angle, the described corresponding position for inside contracting ring and nut body chamfering, which is equipped with, inside contracts ring chamfering；

After the nut installation, the power that inside contracts for inside contracting ring offer passes through chamfering for the first nut body and second Nut body is pushed open, to eliminate nut axial gap.

Preferably, the nut body chamfering and the angular deviation of ring chamfering is inside contracted less than 9.8 °.

Preferably, the chamfer angle for inside contracting ring chamfering is 6.8 °~47.8 °.

Preferably, the chamfer angle for inside contracting ring chamfering is 12 °~28.2 °.

Preferably, it is described inside contract ring be coil spring, clip, O-ring or other have the elastic construction for inside contracting elastic force.

Preferably, the described ring that inside contracts is hatch frame or not hatch frame.

Preferably, described when to inside contract ring be hatch frame, it is described inside contract 50% that ring length is its whole circumference with On or 50% or less.

Preferably, the ring that inside contracts is infundibulate centrum.

Preferably, the ring that inside contracts includes external rings and inner loop, and the ring chamfering that inside contracts is located in inner loop, institute The external rings stated squeeze inner loop on the outside, and power that the inner loop provided inside contract is by chamfering by the first nut body and the Two nut bodies are pushed open, to eliminate nut axial gap.

Preferably, the inner loop is hatch frame or not hatch frame.

Preferably, the inner loop be hatch frame when, the inside ring length be its whole circumference 50% with On or 50% or less.

Preferably, the inner loop is infundibulate cone.

Preferably, the inner loop is a piece of, two panels or multi-disc.

Preferably, the ring chamfer angle that inside contracts of the inner loop side is 6.8 °~45.2 °.

Preferably, the ring chamfer angle that inside contracts of the inner loop side is 9.8 °~25.5 °.

Compared with prior art, the invention has the following advantages that

1) for different nut materials, the size of chamfering can be freely adjusted, to be attained by between irreversible disappear Gap principle, as shown in Figure 9.This can enable the external performance of the product of different materials is consistent.

2) the irreversible gap principle that disappears is able to bear the load of 50N or more without obviously generating gap, to system essence Degree influence is smaller, has very big advantage compared to spring structure, as shown in Figure 10.

3) the gap nut structure that disappears on the market has multiple components (usually with 5 or more components), and the patent Scheme, at least identical effect can be completed using 3 components, so that the quality risk of system significantly reduces.

4) more uniform pressure can be generated to whole circumference face by inside contracting ring, and the distribution standard deviation of pressure is less than 20N, This has extraordinary uniformity in the design for the gap nut that disappears, and the effect in the gap that can to disappear is more preferable and uniform, such as schemes Shown in 11.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of embodiment 1, wherein 1 is the first nut body, 2 is inside contract ring, and 3 be the second nut sheet Body；

Fig. 2 is the schematic cross-sectional view of embodiment 1, wherein 4 be to inside contract ring chamfering, 5 be nut body chamfering；

Fig. 3 inside contracts ring structure schematic diagram for embodiment 1；

Fig. 4 is the structural schematic diagram of embodiment 2, wherein 1 is the first nut body, 21 be external rings, and 22 be inner loop, 3 For the second nut body；

Fig. 5 is the structural schematic diagram after embodiment 2 is assembled；

Fig. 6 is the tilt angle schematic diagram for inside contracting ring or inner loop side；

Fig. 7 is nut body side chamfering structure schematic diagram；

Fig. 8 is the portion the A enlarged structure schematic diagram of Fig. 7；

Fig. 9 is the schematic diagram that different nut body materials correspond to inner loop chamfering；

Figure 10 is the present invention and the performance contrast schematic diagram of the prior art under heavy loads；

Figure 11 is that c-type inside contracts the more uniform circumferential pressure schematic diagram of ring whole circumference application.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiment is a part of the embodiments of the present invention, rather than whole embodiments.Based on this hair Embodiment in bright, those of ordinary skill in the art's every other reality obtained without making creative work Example is applied, all should belong to the scope of protection of the invention.