CN2644774Y

CN2644774Y - Plate spring

Info

Publication number: CN2644774Y
Application number: CN 03217857
Authority: CN
Inventors: 尹学军; 钱国桢
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-06-13
Filing date: 2003-06-13
Publication date: 2004-09-29
Anticipated expiration: 2013-06-13

Abstract

The utility model relates to a spring, in particular to a plate spring for vehicles, which comprises at least a reed; wherein, a damping is arranged on at least a surface of the reed. Due to the damping on the surface of the reed, the damping can deform mainly by shearing when the plate spring is bent, which absorbs and consumes the external vibrating energy. Due to the stability of the damping material, no wear is caused between the reeds and water and oil cannot sink in, so the plate spring has damping stability and reliability.

Description

Leaf spring

Technical field

The utility model belongs to spring, relates in particular to a kind of leaf spring that is used for vehicle.

Background technique

Leaf spring is the parts that often use on the vehicle, and common leaf spring relies on the friction-produced damping between the reed by the superimposed use of multi-disc.Because reed weares and teares easily, can produce noise during friction, can cause damping to change behind chance water, the chance oil, so the stability of vibration damping and poor reliability.

Summary of the invention

The purpose of this utility model is to overcome above-mentioned defective, and a kind of do not have wearing and tearing, noise free, the stable leaf spring of damping property are provided.

For achieving the above object, the utility model comprises at least one reed, at least one reed surface damping body partly or entirely is set, monolithic uses or the superimposed use of multi-disc.

Damping body can be following several form with combining of reed:

1) in the interlayer of described damping body between described reed and restraining plate;

2) described leaf spring is formed by stacking by at least two, and damping body is between adjacent reed.

3) some reeds are formed a reed group, between the adjacent reed damping body are set in every reed group, and reed group and reed group are directly superimposed;

The said damping body of the present invention comprises any material that has the higher material damping ratio, enough dampings can be provided, and divides solid damping material and liquid damping material two big classes.The solid damping material comprises the viscoelasticity and the viscoplastic macromolecular material of high damping, as high-damping rubber, high-damping polyurethane, superplasticity silicone rubber, asphalt rubber, and operating temperature under be solid-state high damping modified pitch sill etc., the material damping of these damping materials is higher than very, reach more than the 30-50%, be different from the general elastic material or the viscoelasticity elastic material of damping slightly, as the rubber material damping ratio have only about 2-5%; The liquid damping material is stable performance, volatile, not ageing-resistant high viscosity liquid, for example is the modified pitch of viscous state etc. under silicone oil and the operating temperature.Solid damping material of the present invention and liquid damping material also comprise with above-mentioned damping material and are matrix, are added with the material of other packing, as add short fibre, mica flour can increase the damping material internal damping, adding rubber powder can increase the elasticity of material, adds the heat-conducting property that steel fiber can increase material.

The said restraining plate of the present invention can be the similar reed of shape, rigidity less than reed, any metal or plastic plate or section bar that the ratio of rigidity damping material is big, as steel plate, Steel Spring Plate, nylon sheet etc.

For the solid high damping material, can adopt modes such as pressure sensitive adhesive is sticking, chemical bonding, hot melt, sulfuration, cast, coating, clamping, parcel to connect with reed or restraining plate.

For the liquid high damping material, the liquid damping material partly or entirely is full of the space around the leaf spring, and the utility model specifically can be taked following several scheme:

Be filled with between the adjacent reed of liquid damping material or between reed and the restraining plate around be provided with seal or sealing configuration, constitute one or more damping chambers, the liquid damping material seal is in this chamber.

Reed periphery after superimposed is provided with seal, and the liquid damping material is set in the seal, and it is full of the space around the reed at least in part.

Because liquid can flow, in order to keep the spacing between damping chamber thickness and the reed, be provided with the spacing part being filled with between the adjacent reed of liquid damping material when being squeezed.

Seal and spacing part have certain elasticity, guarantee that adjacent reed does not contact and weares and teares, and does not hinder relatively moving of reed yet;

Be subjected to the infringement of external environment condition for fear of damping material, single reed group or whole leaf spring can be provided with protective layer.Protective layer should have following function: 1) leaf spring and damping body are had protective action, as prevent that ultraviolet irradiation, one-level from avoiding contacting etc. with water, oil, harmful gas; 2) the extra effect of tightening is played in damping to solid.3) the liquid damping material is played seal action, can be in the functional unification of seal.

The utility model is owing to be provided with damping body on the reed surface, and when leaf spring occured bending and deformation or vibrate, damping body will produce being cut into main imposed deformation, thereby the vibrational energy that absorbs, consumes makes the vibration of leaf spring weaken rapidly.Because avoided and the contacting of water, oil and air, leaf spring is difficult for getting rusty, the damping characteristic of leaf spring is stable, does not have directly contact and wearing and tearing between the reed, does not have noise, thus the vibration damping of leaf spring is stable, reliably.

Description of drawings

Fig. 1 is the utility model embodiment 1 overall structure schematic representation;

Fig. 2 is the sectional view of Fig. 1 along A-A;

Fig. 3 is the utility model embodiment 2 overall structure schematic representation;

Fig. 4 is the sectional view of Fig. 3 along B-B;

Fig. 5 is the utility model embodiment 3 overall structure schematic representation;

Fig. 6 is the sectional view of Fig. 5 along C-C;

Fig. 7 is the utility model embodiment 4,5 overall structure schematic representation;

Fig. 8 is the sectional view of embodiment 4 along D-D among Fig. 7;

Fig. 9 is the sectional view of embodiment 5 along D-D among Fig. 7;

Figure 10 the utility model embodiment 6 overall structure schematic representation;

Figure 11 is the sectional view of Figure 10 along E-E.

Embodiment

Embodiment 1:

Structure as shown in Figure 1, 2, it is made up of a reed 1, its upper and lower surface sulfuration high-damping rubber layer 2, it forms the free damping layer of reed 1.Advantage is to be solid-state under the operating temperature, can directly assemble, and high-damping rubber itself also is the protective layer of reed simultaneously in addition.

Embodiment 2:

It comprises a reed and the restraining plate 9 consistent with its shape, and restraining plate 9 usefulness sheet metals are made, and are solid-state modified pitch base high-damping material under hot melting cohesion normal temperature between leaf spring 1 and the restraining plate 9, shown in Fig. 3,4.The advantage of this example is that restraining plate has increased the shearing to damping, has improved the damping ratio of leaf spring.

Embodiment 3:

Structure is shown in Fig. 5,6, it is formed by stacking by two reeds 1, be perfused with high damping material in the interlayer between the reed 1, as viscous silicone fluid 2b, form seal 4 with the vulcanization of rubber around the interlayer, also have distance block 3 along the length of spring leaf direction, the material of distance block 3 is a rubber-like rubber, can spacing, the function that does not hinder leaf spring again.In addition, the same with common leaf spring, when more than one of reed 1 quantity, the position, termination of reed 1 is provided with clip class clamp device 6.When obtaining required suitable damping characteristic, distance block also can adopt the solid high damping material, and suitably amplifies.

Embodiment 4:

Structure is shown in Fig. 7,8, and it is formed by stacking by three reeds 1, charges full silicone oil 2b between the reed, be provided with the spacing part in it and keep spacing between the reed, the outside of the reed 1 that is superimposed together protective layer 5 is set, have sealing function simultaneously.Protective layer 5, distance block 3 constitute by ordinary elasticity rubber.

Embodiment 5:

Shown in Fig. 7,9, compare with embodiment 4, replace liquid damping material 2b with solid damping material 2a, save spacing part and seal, in the protective layer 5 reinforcing fibre is arranged, work the effect of tightening simultaneously, present embodiment is simple in structure, reliable performance.

Embodiment 6:

Structure is shown in Figure 10,11, and it is formed by stacking by four reeds 1, forms one group in twos, and solid damping material high-damping rubber 2a is set between every group the interlayer, and group is directly superimposed or add behind the protective layer superimposed with group.

The bind mode of damping body and reed can have a variety of, and the solid high damping material can adopt mode and reed connections such as pressure-sensitive adhesive self-adhesive, adhesives, hot melting cohesion, sulfuration, cast cured explosive, coating, clamping, parcel; High viscosity liquid then adopts the mode of sealing again of perfusion earlier.

When the utility model occurs bending and deformation when leaf spring, damping body will produce to be cut into main distortion, can absorb board-like movement of springs energy, be translated into heat energy and consume, make the vibration of leaf spring weaken rapidly, because the damping characteristic of damping material is stable, so the vibration damping of leaf spring is stable, reliable.

External protection plays the effect to the leaf spring surface protection, has avoided leaf spring because of contacting the phenomenon that causes surface deterioration such as corrosion with air, water, wet goods.The technological scheme that model utility is equal to is all within protection domain of the present utility model.

Claims

1. a leaf spring comprises at least one reed, it is characterized in that at least one surface of reed is provided with damping body at least in part.

2. leaf spring according to claim 1 is characterized in that in the interlayer of described damping body between described reed and restraining plate.

3. leaf spring according to claim 1 is characterized in that having at least two reeds superimposed, and the interlayer between the adjacent reed is provided with damping body.

4. leaf spring according to claim 1 is characterized in that some reeds are overlapped into the reed group, between the adjacent reed damping body is set in each reed group, and reed group and reed group are directly superimposed.

5. according to each described leaf spring of claim 1 to 4, it is characterized in that described damping body is the solid high damping material, it adopts mode and reed connections such as adhesive sticker stickup, adhesives, hot melting cohesion, sulfuration, cast, coating, clamping, parcel.

6. according to each described leaf spring of claim 1 to 4, it is characterized in that being provided with Sealing or sealing configuration between the adjacent reed or between reed and the restraining plate, constitute one or more damping chambers, the liquid damping material seal is in this chamber.

7. according to each described leaf spring of claim 1 to 4, it is characterized in that described reed periphery after superimposed is provided with seal, the liquid damping material is set in the seal, it is full of the space around the reed at least in part.

8. leaf spring according to claim 6 is characterized in that being provided with the spacing part that is intended to keep spacing between damping chamber thickness and the reed between the adjacent reed of liquid damping material being filled with.

9. leaf spring according to claim 4 is characterized in that single reed group is provided with protective layer.

10. according to claim 3 or 4 described leaf springs, it is characterized in that the reed outer periphery matcoveredn that is superimposed together.