CN2787906Y

CN2787906Y - Rubber nut

Info

Publication number: CN2787906Y
Application number: CN 200520001702
Authority: CN
Inventors: 陈长生; 熊明建
Original assignee: Chongqing Zongshen Technology Development and Research Co Ltd
Current assignee: Chongqing Zongshen Technology Development and Research Co Ltd
Priority date: 2005-01-26
Filing date: 2005-01-26
Publication date: 2006-06-14
Anticipated expiration: 2015-01-26

Abstract

The utility model discloses a rubber nut, which comprises a nut and a hollow columnar rubber buffering body, wherein both ends of the hollow columnar rubber buffering body are opened, the nut is coaxially inlaid in the rubber buffering body and is combined into an integral body with the rubber buffering body, and the thread outer diameter of the nut is smaller than the inner diameter of the rubber buffering body. The rubber part of the rubber nut of the utility model can generate compression and deformation when is used because the rubber part of the rubber nut of the utility model is stressed with the acting force of the nut, and a component can be firmly clamped on the other component by a deformed part of a rubber body; thereby, the connecting and fixing functions can be performed; meanwhile, the pressure which is born by a connected piece can be buffered by rubber in the process of deformation, and the function of connected piece protection can be performed.

Description

A kind of rubber nut

Technical field

The utility model relates to a kind of nut, especially a kind of rubber nut that is used to connect motorcycle covering component.

Background technique

At present, the Placement of motorcycle plastic covering mainly is directly with screw the plastic covered part to be connected with immovable point on the vehicle frame, and its major defect has: in assembly process, the impact force that screw advances may directly crush working of plastics assembling place; In motorcycle driving, the vibrations of motorcycle act directly on the plastic covered part, and vibrations can cause the joint wearing and tearing even break for a long time.This will cause the working of plastics damage, reduce the working life of plastic covered part.

The model utility content

The purpose of this utility model is at the deficiencies in the prior art, and a kind of rubber nut is provided, and can prevent the damage of connected component, increases buffer function.

For achieving the above object, the utility model provides a kind of rubber nut, the cylindricality rubber-buffer that comprises a nut and a both ends open, hollow, what described nut was coaxial is embedded in the rubber-buffer, be combined as a whole with it, and the major diameter of thread of described nut is less than the internal diameter of described rubber-buffer.

Describedly be embedded at the distance that nut in the rubber-buffer and described rubber-buffer be used for a fastening end and be at least 5mm; Described rubber-buffer is used for a fastening end and is provided with a circle convex edge; The axial section of described nut is I-shaped, and the material of described nut can be the material of any needs, generally mostly is brass.

Described rubber-buffer meets following standard:

Shore hardness A:50 ± 3;

Rubber modulus: 〉=4.5Mpa;

In 25% compression, under the condition of 70 ℃ * 24h, compression set residual volume 〉=80%;

Dynamic shear modulus: 〉=10MPa.

When using, the rubber part of rubber nut described in the utility model produces compressive strain (chap) because of the active force that is subjected to I-shaped brass nut, when nut reaches pretightening force, rubber-buffer reaches the maximum compression amount of deformation, the part of rubber nut chap can firmly be stuck in parts on another parts, thereby plays the effect of connection; Rubber can cushion the pressure that connected piece is subjected in the process of distortion simultaneously, plays the effect of protection connected piece.

Below in conjunction with drawings and Examples the utility model is described in further detail.

Description of drawings

Fig. 1 is the structural drawing of the utility model one embodiment's described rubber nut;

Fig. 2 is the processing schematic representation of rubber nut described in the utility model;

Fig. 3 connects the structural representation of plastic covered part and vehicle frame metallic stamping pieces for the utility model uses rubber nut;

Fig. 4 connects the structural representation of two working of plasticss for the utility model uses rubber nut.

Embodiment

Referring to Fig. 1, structural drawing for the utility model one embodiment's described rubber nut, described rubber nut comprises that axial section is the cylindricality rubber-buffer 2 of I-shaped brass nut 1 and a both ends open, hollow, described brass nut 1 coaxial being embedded in the rubber-buffer 2, described rubber-buffer 2 is combined as a whole with this brass nut 1, and the major diameter of thread of nut is less than the rubber-buffer internal diameter.One end of this rubber-buffer 2 is the connecting end that is used to connect miscellaneous part, the other end is the fastening end that bolts and nuts connect, for when connecting two parts, what make that rubber-buffer 2 can be firm is stuck on the parts that desire connects, the distance of connecting end and fastening end is not less than 5mm, and promptly the length of rubber-buffer deformation place is not less than 5mm; And, being provided with a circle convex edge 21 at connecting end away from brass nut 1, there is certain thickness this convex edge 21, when utilizing this rubber nut to connect miscellaneous part, connected two parts lay respectively at the upper and lower surface of convex edge 21, and then this convex edge 21 can compensator or trimmer pressure, plays the effect of rubber sheet gasket.Wherein, described nut is the nut of standard size, as M5, M6 etc.

The utility model adopts specialized mould man-hour adding, adopt schematic representation that specialized mould adds man-hour as shown in Figure 2, this specialized mould comprises cover half, dynamic model and die cavity post, have the internal diameter die cavity 16 identical in the die cavity post with the rubber nut external diameter of processing, die cavity post and cover half are fixed together, described cover half comprises fixed clamping plate 13 and platen 14 compositions, link together by platen fixing bolt 11 and die cavity, die cavity inserts 12 on the platen puts in the die cavity 16, cooperates with core 18 to fix nut 1; Dynamic model comprises core plate 17, core 18, dynamic model mould pin 19; Dynamic model fixing bolt 20; Guide pillar 15,22, feed plate 23, reinforced base plate 24, described feed plate 23 is fixing by feed plate fixing bolt 25 with reinforced base plate 24, is provided with the material storage chamber in the core plate 17, and this material storage chamber communicates with die cavity 16, and guide pillar 15,22 is used for matched moulds.

The course of working of rubber nut described in the utility model is: mould is opened from mold joint A-A; The brass nut inserts is placed on the die cavity inserts 12 of mold cavity 16; Matched moulds, die cavity inserts 12 cooperate with core 18 fixes nut 1; The material storage chamber of rubber from core plate 17 with fusion is injected in the die cavity 16 by feed plate 23; After treating the rubber complete cure, mould is opened from mold joint A-A, taken out finished product.

Wherein, the sulfurize temperature of rubber is 120-180 ℃, and preferred 140 ℃, cure time is 40-80s, preferred 60s, and the pressure when feed plate is reinforced is 25-40Mpa, preferred 30Mpa.

The physical and mechanical properties of the rubber part of the rubber nut that the above-mentioned processing method of process obtains is: shore hardness A:50 ± 3; Rubber modulus: 〉=4.5Mpa; In 25% compression, under the condition of 70 ℃ * 24h, compression set residual volume 〉=80%; Shear modulus (dynamically): 〉=10MPa.

Rubber nut of the present utility model is cooperated with miscellaneous part such as bolt and form link.

As shown in Figure 3, for using link described in the utility model to connect the structural representation of plastic covered part and vehicle frame metallic stamping pieces, after on the metallic stamping pieces 3 of rubber nut 10 being inserted on the vehicle frame, plastic covered part 4 is placed on the rubber nut 10, and stack a yielding rubber pad 5 at this plastic covered part 4, pass yielding rubber pad 5 with a bolt 6, plastic covered part 4, put in the rubber nut 10, the brass nut 1 inner with it screws togather, when screwing togather, rubber-buffer 2 meeting stress deformations, when rubber-buffer 2 was deformed to limit position, the part of rubber nut 10 chaps was blocked the metallic stamping pieces 3 on the vehicle frame securely, thereby played the effect of connection; Can cushion the impact force of 6 pairs of plastic covered parts 4 of bolt simultaneously in the process of rubber deformation.On the other hand, the vibrations of vehicle frame in the passage in transit that reaches plastic covered part 4 rubber-buffer 2 and the convex edge 21 thereof of rubber nut 10, rubber size can absorb most vibration energy, thereby increases the working life of material plastic covered part 4.

As shown in Figure 4, for using rubber nut, the utility model connects the structural representation of two working of plasticss, Placement such as Fig. 3 of connecting working of plastics 4,8 with rubber nut 10 are identical, bolt 6 passes metal plain cushion 7, puts in the rubber nut 10, the brass nut 1 inner with it screws togather, when screwing togather, rubber-buffer 2 meeting stress deformations are with 8,4 firm the linking together of plastic covered part.

It should be noted last that, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.

Claims

1, a kind of rubber nut comprises nut, it is characterized in that, in the cylindricality rubber-buffer that is embedded at a both ends open, hollow that described nut is coaxial, and is combined as a whole with it, and the major diameter of thread of described nut is less than the internal diameter of described rubber-buffer.

2, rubber nut according to claim 1 is characterized in that, the distance that described nut and described rubber-buffer are used for a fastening end is at least 5mm.

3, rubber nut according to claim 1 and 2 is characterized in that, described rubber-buffer is used for a fastening end and is provided with a circle convex edge.

4, rubber nut according to claim 1 and 2 is characterized in that, the axial section of described nut is I-shaped.