JP4011253B2 - Mounting method of suspension spring - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for attaching a suspension spring, and more particularly to an improvement in a method for attaching a suspension spring when the suspension spring is installed in a state in which a suspension spring comprising a coil spring is interposed on the outer periphery of a shock absorber body.
[0002]
[Prior art]
In a strut type hydraulic shock absorber that constitutes a suspension structure in a vehicle, a suspension spring consisting of a coil spring is attached to the outer periphery of the shock absorber body, and the shock absorber body is extended in the extending direction by this suspension spring. There is something that is energized.
[0003]
That is, for example, as shown in FIG. 5, when the suspension spring 1 is attached in a state of being interposed on the outer periphery of the shock absorber body 2, the lower end is connected to the cylinder body 2 a constituting the shock absorber body 2. The upper end of the piston rod body 2b that constitutes the shock absorber body 2 is engaged with the upper spring receiver 4 while being held by the lower spring receiver 3, so that it is sandwiched between the upper and lower spring receivers 3 and 4. It is going to be put in the state that was done.
[0004]
By the way, the suspension spring 1 before being attached to the shock absorber body 2 is so-called stretched and has a length that is considerably larger than the dimension between the spring receivers 3 and 4. In order to be accommodated between 3 and 4, it must be contracted by the action of an external force.
[0005]
The suspension spring 1 is contracted to a predetermined contracted state, for example, as shown in FIG. 6, the intermediate portion 1a of the suspension spring 1 is contracted using a jig (not shown). The lower end of the suspension spring 1 is placed on the lower spring support 3 as it is.
[0006]
Further, when the lower end of the suspension spring 1 is placed on the lower spring receiver 3, the upper spring receiver 4 is connected to the piston rod body 2b, and then the suspension spring 1 is gradually extended. However, the upper end of the suspension spring 1 is brought into contact with the upper spring receiver 4 connected to the piston rod body 2b.
[0007]
If the jig is removed after the upper end of the suspension spring 1 is brought into contact with the upper spring receiver 4 and locked, the suspension spring 1 made of a coil spring is inserted into the outer periphery of the shock absorber body 2. You will be able to install.
[0008]
[Problems to be solved by the invention]
However, in the above-described mounting method of the suspension spring, when mounting the suspension spring 1, when the suspension spring 1 contracted using a jig is placed on the lower spring receiver 3 at a predetermined position, As shown in FIG. 6, the upper end of the suspension spring 1 may not face the upper spring receiver 4.
[0009]
That is, first, assuming that the suspension spring 1 made of a coil spring is not forcibly contracted and is in a so-called extended state, it is assumed that the suspension spring 1 is placed on the lower spring receiver 3. Since it is attached to the shock absorber main body 2 in an inclined manner and the coil spring is easy to bend as a whole, the upper end side of the suspension spring 1 has a predetermined center line C shown in FIGS. 5 and 6. As shown by the axial center line C1 in FIG. 6 rather than the tilted state, the upper end of the suspension spring 1 cannot face the upper spring receiver 4.
[0010]
In view of this, as shown in FIG. 6, the intermediate portion 1a of the suspension spring 1 is contracted so that the overall length is less than the dimension between the upper and lower spring receivers 3 and 4. The upper end of the spring 1 does not face the upper spring receiver 4.
[0011]
As a result, in the above-described method for mounting the suspension spring, when the suspension spring 1 is mounted, it is necessary to make a modification so that the upper end of the suspension spring 1 faces the upper spring receiver 4.
[0012]
When this correction work is performed by a jig moving operation or the like, the structure of the jig is complicated, and an apparatus for controlling the jig is required. As a result, a strut-type shock absorber is required. In the case where the suspension spring 1 is attached to the main body 2, the cost reduction cannot be expected.
[0013]
The present invention was devised in view of the above-described present situation, and the object of the present invention is to improve workability in the case of mounting a suspension spring comprising a coil spring on the outer periphery of the shock absorber body. Thus, it is intended to provide a suspension spring mounting method that contributes to cost reduction and is optimal for expecting improvement in versatility, particularly in a strut type hydraulic shock absorber.
[0014]
[Means for Solving the Problems]
In attaching the suspension spring composed of a coil spring to the outer periphery of the shock absorber main body, after the lower end of the suspension spring is supported on the lower spring holder connected to the cylinder body constituting the shock absorber main body, In the mounting method of the suspension spring in which the upper end of the suspension spring is engaged with the upper spring support connected to the piston rod body constituting the shock absorber body together with the cylinder body, the suspension spring maintained in the contracted state is A spacer made of a material that disappears over time is placed between the lower end of the suspension spring and the lower spring support when it is placed on the spring support, and the inclination of the suspension spring is corrected with this spacer. The upper end of the suspension spring is opposed to the upper spring support, and then the suspension spring is extended to lock the upper end of the suspension spring to the upper spring support.
[0015]
In the above-described configuration, more specifically, the spacer has a mechanical strength that does not break or deform due to the load of the suspension spring, but is made of a material that disappears over time, such as ice or dry material. Suppose it consists of ice.
[0016]
At this time, the spacer may be covered or packaged with a sheet-like body or a film-like body rich in elasticity, and the lower spring support is provided with a rubber sheet on the upper surface thereof. A spacer may be placed on the rubber sheet.
[0017]
In order to maintain the suspension spring in the contracted state, the jig is used, and when the suspension spring is maintained in the contracted state, the length dimension of the suspension spring is between the upper spring receiver and the lower spring receiver. Suppose that it is set to be smaller than the dimension.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described below on the basis of the illustrated embodiment. The suspension spring attached to the outer periphery of the shock absorber body according to the present invention is also the suspension spring in the conventional example shown in FIG. Similarly, the shock absorber body is made of a coil spring. Similarly, the shock absorber body is a shock absorber body set to a strut type that constitutes a suspension structure in a vehicle.
[0019]
As shown in FIG. 1, even when the suspension spring 1 is attached to the outer periphery of the shock absorber main body 2 according to the present invention, the lower end of the suspension spring 1 constitutes the shock absorber main body 2. The upper end of the suspension spring 1 is locked to the upper spring receiver 4 connected to the piston rod body 2b constituting the shock absorber body 2 together with the cylinder body 2a. It is supposed to.
[0020]
At this time, even in the present invention, the suspension spring 1 is maintained in a predetermined contracted state with the intermediate portion 1a using a jig (not shown), that is, its length dimension is lower than that of the upper spring receiver 4 and the lower portion. It is set to be smaller than the dimension between the spring receiver 3 and the lower end is placed on the lower spring receiver 3 in this contracted state.
[0021]
However, in the present invention, when the suspension spring maintained in the contracted state is placed on the lower spring receiver, as shown in FIG. 2, the lower end of the suspension spring 1 and the lower spring receiver 3 was Zaisa distribution spacers 5 made of a material disappears over time during, and correct the inclination of suspension springs 1 are opposed to the upper end of the suspension spring 1 above the spring receiver 4 in the spacer 5, and then The suspension spring is extended and its upper end is locked to the upper spring support.
[0022]
At this time, as shown in FIG. 3, in the lower spring receiver 3, a rubber sheet 6 that stabilizes the lower end of the suspension spring 1 on the lower spring receiver 3 is disposed on the upper surface thereof. The spacer 5 may be placed on the rubber sheet 6.
[0023]
In this case, when the spacer 5 disappears, the lower end of the suspension spring 1 is placed on the lower spring receiver 3 via the rubber sheet 6, and therefore, for example, the lower end of the suspension spring 1 is It is possible to avoid problems such as the occurrence of collision noise caused by directly contacting the lower spring support 3.
[0024]
On the other hand, it is assumed that the spacer 5 is made of a member 51 made of a material that disappears with the passage of time, for example, ice or dry ice, while having mechanical strength that does not break or deform due to the load of the suspension spring 1.
[0025]
At this time, even if the spacer 5, that is, the member 51 is made of ice or dry ice, the lower end of the suspension spring 1 is simply placed on the spacer 5 while the lower end of the suspension spring 1 is in contact therewith. Since it cannot be pressed by an external force action greater than that load, it is sufficient to set it to have mechanical strength that does not cause breakage or deformation due to the load of the suspension spring 1 as described above.
[0026]
Further, as shown in FIG. 4A, the spacer 5, that is, the member 51 may be covered or packaged with a cover body 52 made of a sheet-like body or a film-like body rich in elasticity.
[0027]
In this case, when the above-described member 51 disappears, as shown in FIG. 4 (B), the cover body 52 exhibits the same function as the rubber sheet 6 described above. For example, compared with the case where the material 51 is not covered with the cover body 52, it is advantageous in terms of making the manufacturing and handling of the spacer 5 convenient.
[0028]
Therefore, when the lower end of the suspension spring 1 is placed on the lower spring support 3 in order to attach the suspension spring 1 made of a coil spring to the state where the suspension spring 1 is interposed on the outer periphery of the shock absorber body 2, for example, the suspension spring 1 Is inclined as shown by the axis C1 in FIG. 6, if the spacer 5 formed as described above is used, the state shown by the axis C in FIG. The inclination state of the suspension spring 1 can be corrected so that the upper end faces the upper spring receiver 4.
[0029]
From this state, although not shown, the upper spring receiver 4 is connected to the piston rod body 2b, and then the upper end of the suspension spring 1 is connected to the piston rod body 2b while the suspension spring 1 is gradually extended. It is made to contact | abut to the upper spring receiver 4.
[0030]
And if the jig | tool which shrink | contracts the intermediate part 1a of the suspension spring 1 is removed after making the upper end of the suspension spring 1 contact | abut on the upper spring receiver 4 and latching, suspension spring 1 will be a buffer body. It can attach to the state of interposing on the outer periphery of 2.
[0031]
Therefore, in this case, in the above-described mounting method of the suspension spring, when the suspension spring 1 is mounted, a correction operation is performed so that the upper end of the suspension spring 1 is opposed to the upper spring receiver 4. It will not be necessary to execute it by operation.
[0032]
【The invention's effect】
As described above, in the present invention, when the suspension spring consisting of the coil spring is mounted on the outer periphery of the shock absorber body, when the lower end of the suspension spring is placed on the lower spring support, Even if the suspension spring is inclined more than the setting, by arranging a spacer between the lower end of the suspension spring and the lower spring support, the inclination state of the suspension spring can be corrected appropriately, The upper end of the suspension spring can be opposed to the upper spring support.
[0033]
At this time, the spacer is formed of a member made of a material that disappears with time, for example, ice or dry ice, so that the suspension is attached to the outer periphery of the shock absorber body. For example, when the shock absorber main body is shipped, the spring is placed in a set mounting state.
[0034]
As a result, according to the present invention, it is possible to improve the workability in the case of attaching the suspension spring comprising the coil spring to the outer periphery of the shock absorber body, thereby contributing to the cost reduction. It is ideal for expecting improved versatility in the shock absorber body.
[Brief description of the drawings]
FIG. 1 is a partial front view showing, in partial cross section, one step of a suspension spring mounting method according to the present invention.
FIG. 2 is a partially enlarged cross-sectional view showing a state in which a spacer is disposed between a lower end of a suspension spring and a lower spring support.
FIG. 3 is a view similar to FIG. 2 showing a state in which the lower end of the suspension spring is brought into contact with a spacer placed on a rubber sheet on a lower spring support.
4A is a view similar to FIG. 2 showing a state in which a spacer according to another embodiment is disposed between a lower end of a suspension spring and a lower spring support. FIG.
(B) It is a figure which shows the state which the cover member which comprises the spacer shown to (A) collapsed similarly to FIG.
FIG. 5 is a view similar to FIG. 1 showing a state in which a suspension spring is attached in a state of being interposed on an outer periphery of a shock absorber body set to a strut type.
FIG. 6 is a view showing one step of a conventional suspension spring mounting method similar to FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Suspension spring 1a Middle part 2 Shock absorber main body 2a Cylinder body 2b Piston rod body 3 Lower spring receiver 4 Upper spring receiver 5 Spacer 6 Rubber sheet 51 Member 52 which consists of a material which disappears with passage of time 52 Cover body

Claims (1)

In attaching the suspension spring composed of a coil spring to the outer periphery of the shock absorber main body, after the lower end of the suspension spring is supported on the lower spring holder connected to the cylinder body constituting the shock absorber main body, In the mounting method of the suspension spring in which the upper end of the suspension spring is engaged with the upper spring support connected to the piston rod body constituting the shock absorber body together with the cylinder body, the suspension spring maintained in the contracted state is A spacer made of a material that disappears over time is placed between the lower end of the suspension spring and the lower spring support when it is placed on the spring support, and the inclination of the suspension spring is corrected with this spacer. A suspension spring mounting method, wherein the upper end of the suspension spring is opposed to an upper spring support, and then the suspension spring is extended to lock the upper end of the suspension spring to the upper spring support.

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