JPH05196076A - Insert for leaf spring - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] The positional deviation in the width direction between the spring plate to which the insert is attached and the spring plate adjacent to it and the accompanying squeaking noise and the spring plate due to wear The early breakage is prevented and the stress is prevented from concentrating on the compression surface of the spring plate to prevent the stress above the allowable stress from being generated in the spring plate, thereby preventing the early breakage of the spring plate. An insert 1 used for a leaf spring S, which has a shape to be attached by engaging with a spring plate 2 on a child plate side so as not to move in a width direction and a longitudinal direction thereof. It is characterized in that it is formed in a shape that covers the plate thickness and the entire circumference in the plate width direction of at least one spring plate 3 on the side of the main plate adjacent to the plate 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a leaf spring insert, and in particular, by providing a shape for covering the thickness and width direction of the spring plate, not only squeak noise but also early breakage of the spring plate is prevented. The present invention relates to an insert for a leaf spring, which can be prevented and is extremely excellent in practicality.

[0002]

2. Description of the Related Art A conventional leaf spring insert is shown in FIG.
Or a simple flat plate like the insert 11 shown in
As the insert 12 shown in FIG. 9 is a flat plate made of a slippery material having a low friction coefficient and having a protrusion 12a formed thereon, a rebound clip is not applied in the case of a leaf spring composed of spring plates of different lengths. There is a drawback that the spring plate and the insert may be displaced in the width direction with respect to other spring plates.

A spring plate for inserting an insert at the tip may be subjected to taper rolling, but it is a design premise that the taper is applied to only one side. This is ideal, but in reality, it is applied to both upper and lower surfaces. The taper may be applied, and in such a case, the adjacent spring plate may come into contact with a highly rigid portion, and the stress value may abnormally increase at this contact point. In addition, since the camber of the spring plate alone also varies, when the nip gap between the spring plates becomes relatively wide, stress exceeding the allowable stress is generated at the contact point, and the spring plate breaks early. It had the drawback of being afraid.

Further, in the leaf spring, when the spring plate on the child plate side with which the insert engages and the spring plate on the parent plate side adjacent thereto contact through the insert, the spring plate on the parent plate side The transmitted load is concentrated on the part where the insert contacts, and squeaking noise is generated due to rubbing at this part, and the spring plate on the master plate side may be early broken from this part due to wear. There was a drawback.

[0005]

DISCLOSURE OF THE INVENTION The present invention has been made in order to eliminate the above-mentioned drawbacks of the prior art. The object of the present invention is to provide an insert for a leaf spring for a vehicle, Forming a shape that engages with the spring plate so as to limit the amount of deviation in the width direction of the spring plate and covers the plate thickness and the entire circumference in the plate width direction of at least one spring plate adjacent to the spring plate. Prevents displacement of the child plate, the spring plate on the parent plate adjacent to it, and the spring plate adjacent to it on the width direction, and prevents squeaking noise between the insert and the spring plate in contact with it. And to prevent early breakage of the spring plate due to wear.

Another object is to make the insert contact the tension surface of the spring plate by the above construction, that is, the shape of the insert covering the plate thickness and the entire circumference in the plate width direction of at least one spring plate. Even if the taper due to the rolling process is applied to both upper and lower sides of the spring plate, the insert should distribute the load to the next spring plate to prevent or reduce the stress above the allowable stress in the spring plate. This is to prevent early breakage at the contact point of the spring plate with the insert.

Another object of the present invention is to prevent the positional deviation in the width direction of the minimum sub-plate by engaging the insert according to the present invention with the minimum sub-plate which has not been held by a clip for various reasons.

[0008]

SUMMARY OF THE INVENTION In summary, the present invention (Claim 1) relates to an insert for a leaf spring for a vehicle, which engages with the spring plate so as not to move either in the longitudinal direction or in the width direction. And at least one adjacent to the spring leaf
It is characterized in that it is formed in a shape that covers the plate thickness and the entire circumference of the spring plate in the plate width direction. Further, the present invention (claim 2) is an insert for a leaf spring for a vehicle, which engages with the spring plate so as not to move in both the longitudinal direction and the width direction of the spring plate and is adjacent to the spring plate. It is characterized in that the two spring plates are formed in a shape that covers the plate thickness and the entire circumference in the plate width direction. Further, the present invention (claim 3), in an insert for a leaf spring for a vehicle, for engaging with any one of the spring plates so as not to move in either the longitudinal direction or the width direction of the spring plate. A projection is formed and is formed in a shape that covers the plate thickness and the entire circumference in the plate width direction of at least one spring plate on the parent plate side with respect to the spring plate with which the projection engages. is there.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments shown in the drawings. First, the first embodiment of the present invention shown in FIGS. 1 to 3 will be described. The insert 1 is a vehicle leaf spring S.
At least one sheet that is used for the spring plate 2 (the smallest child plate in the drawing) is engaged with the spring plate so as not to move in both the longitudinal direction and the width direction and is adjacent to the spring plate. The spring plate 3 is formed in a shape that covers the plate thickness and the entire circumference in the plate width direction.

The insert 1 has a lower horizontal portion 1a.
And lateral side vertical portions 1b and 1c continuously rising vertically from both sides in the width direction of the lower horizontal portion, and an upper horizontal portion 1d continuous to the lateral side vertical portion, the overall shape of which is a "mouth-shape". Is formed.

In order to engage the insert 1 with the spring plate 2, as an example, a projection 1e is formed so as to project downward on the central lower surface of the lower horizontal portion 1a of the insert 1, and the horizontal cross section of the projection is, for example, It is formed in a cylindrical shape, and its length is set to about the plate thickness of the spring plate 2, and as shown in FIG. 1, it engages with a hole 2 a formed in the spring plate 2.

As shown in FIGS. 1 to 3, the axle 13 is fastened and fixed by U-bolts 14 via pads 15 and spacers 16, and the eyeballs 18,
The projection 1e engages with the hole 2a of the spring plate 2 which is the smallest child plate of the leaf spring S in which 19 and the protection eyeball 21 are formed
The spring plate 3 on the main plate (spring plate 5) side is attached so as to cover the plate thickness and the entire circumference in the plate width direction.

In the embodiment shown in FIG. 1, a pair of well-known rebound clips 6 are bundled at both ends of the spring plate 3 up to the spring plate 5, which is a parent plate, and the spring plate 3 and the spring are attached to the rebound clip. A known flat plate-like insert 11 as shown in FIG. 8 is attached between the plate 4 and the plate 4.

Next, the second embodiment of the present invention shown in FIGS. 4 to 7 will be described. The insert 20 according to the present invention will be described.
Is used for a vehicle leaf spring S as in the first embodiment, and the insert 20 is engaged with the spring leaf 8 so as not to move in either the longitudinal direction or the width direction. In addition, the two spring plates 9 and 10 adjacent to the spring plate are formed so as to cover the plate thickness and the entire circumference in the plate width direction.

The insert 20 has a lower horizontal portion 20.
a, side vertical portions 20b and 20c that continuously rise vertically from both sides in the width direction of the lower horizontal portion, an intermediate horizontal portion 20f continuous from the vertical center of the vertical side portion, and a vertical side portion 20b. Upper horizontal part 20 continuous to the upper end of 20c
The upper horizontal portion is formed with a slit 20g for enabling attachment to a main plate (for example, the spring plate 10 shown in the figure) on which the eyeball portion is formed, and the side surface vertical portion 20b,
A notch 20h for engaging the rebound clip 6 is formed in 20c, and the overall shape is "eye-shaped".
Is formed in.

The slit 20g is not necessary when it is attached to a spring plate without an eyeball.

In order to engage the insert 20 with the spring plate 8, as an example, a protrusion 20e is formed so as to project downward on the lower central portion of the lower horizontal portion 20a of the insert 20, and the horizontal cross section of the protrusion is, for example, a circle. It is formed in a columnar shape, and its length is set to about the plate thickness of the spring plate 8 and engages with a hole 8a formed in the spring plate 8 as shown in FIG.

As shown in FIGS. 6 and 7, the axle 13 is fastened and fixed by U bolts 14 via the pads 15 and the spacers 16, and the eyeball portions 18,
The projection 20e engages with the hole 8a of the spring plate 8 which is the smallest child plate of the leaf spring S in which 19 and the protection eyeball 21 are formed, and the plate thickness of the spring plate 9 and the spring plate 10 which is the parent plate and The rebound clip 6 is attached so as to cover the entire circumference in the plate width direction, and the rebound clip 6 is bundled together and attached to the leaf spring S together with the clip.

The present invention is configured as described above,
The operation will be described below. First, the first embodiment will be described with reference to FIGS. 1 to 3. As shown in the drawing, the insert 1 according to the present invention is attached to a spring plate 2 which is a minimum child plate, and the insert 1 has a plate thickness of the spring plate 2. Also, the lower horizontal portion 1a contacts the spring plate 2, and the upper horizontal portion 1d contacts the spring plate 4, since the entire circumference in the plate width direction is covered.

The protrusion 1e of the insert 1 is formed in the hole 2 of the spring plate 2.
Since it is engaged with a, the insert 1 is attached to the spring plate.
Cannot move either in the width direction or in the longitudinal direction, and since the insert covers the entire circumference of the spring plate 2, the spring plate 2 and the spring plate 3 are displaced from each other in the width direction. It does not occur, and the squeaking noise and wear associated with this displacement are eliminated, and the early breakage of the spring plate 3 due to this can be prevented.

Even if the upper and lower surfaces of the spring plate 3 are tapered by rolling, not only the lower horizontal portion 1a of the insert 1 contacts the lower surface 3a of the spring plate 3, that is, the compression surface. Since the upper horizontal portion 1d comes into contact with the upper surface 3b of the spring plate 3, that is, the tension surface, stress is not concentrated only on a portion having high rigidity, and the insert 1 applies a load to the next spring plate 4. Since it is dispersed, it is possible to prevent or reduce the occurrence of stress exceeding the allowable stress in the spring plate 3, and it is possible to prevent early breakage of the spring plate 3.

Next, the second embodiment shown in FIGS. 4 to 7 will be described. The insert 20 according to the present invention is used in combination with the rebound clip 6 to form the spring plate 8 which is the smallest child plate of the heavy plate spring S. The spring plate 9 and the spring plate 10, which is a master plate, are engaged with each other and bundled together with the rebound clip 6.

The spring plate 10 has eyeball portions 18, 19
And the protective eyeball portion 21 is formed, and the intermediate horizontal portion 2 is formed.
Since the spring plate 10 cannot be inserted into the space between 0f and the upper horizontal portion 20d, the upper horizontal portion 20d is vertically set by using the slit 20g and the spring plate 10 is sandwiched between the insert 20 and then the upper portion. The horizontal portion 20d is bent horizontally to form a "eye shape", the protrusion 20e is engaged with the hole 8a of the spring plate 8 to be attached, and the rebound clip 6 is engaged with the notch 20h. The plates 10 and 10 are fixed so as to be bundled.

As a result, first, as in the first embodiment, the positional deviation of the spring plates 9 and 8 in the width direction, and the squeaking noise and the early wear of the spring plate 9 associated with this positional deviation. It is possible to prevent breakage and also prevent early breakage of the spring plate 10. Even if the upper and lower surfaces of the spring plates 9 and 10 are tapered by the rolling process, the stress is not concentrated on the places with high rigidity, and not only the compression surfaces of the spring plates 9 and 10 Since the intermediate horizontal portion 20f or the upper horizontal portion 20d of the insert 20 is also in contact with the tension surface, the insert 1 disperses the load on the next spring plate 10 and a stress larger than the allowable stress is generated on the compression surface. Prevented or mitigated.

Further, in this embodiment, since the spring plate 8 which is the smallest child plate to the spring plate 10 which is the parent plate can be bundled together with the rebounding clip 6 by the insert 20, it is not conventionally pressed by the rebound clip. This is advantageous because it is possible to completely prevent the positional deviation of the spring plate 8 that is the smallest child plate with respect to the spring plate 9 in the width direction.

Further, the spring plate having no eyeball portion is attached to the intermediate horizontal portion 20.
When inserting into the space between f and the upper horizontal portion 20d, the slit 20g is unnecessary, so the upper horizontal portion 20
d may be formed in a continuous shape.

[0027]

As described above, the present invention provides an insert for a leaf spring for a vehicle as described above, wherein the insert is engaged with the spring plate so as not to move in either the longitudinal direction or the width direction of the spring plate. In addition, since at least one spring plate adjacent to the spring plate is formed in a shape that covers the plate thickness and the entire circumference in the plate width direction, the child plate, the spring plate on the parent plate adjacent to the child plate, and the spring adjacent thereto. It is possible to prevent positional deviation of the plate in the width direction, to prevent squeaking noise between the insert and the spring plate contacting it, and to prevent early breakage of the spring plate due to wear. ..

In addition, since the insert is shaped so as to cover the plate thickness and the entire circumference of the plate in the plate width direction of at least one spring plate, the insert also comes into contact with the tension surface of the spring plate. Even if the taper is placed on both the upper and lower surfaces of the spring plate, the insert can distribute the load to the next spring plate and prevent or reduce the occurrence of stress exceeding the allowable stress in the spring plate. This has the effect of preventing early breakage at the hit point.

Further, by engaging the insert according to the present invention with the smallest child plate which has not been held by a clip for various reasons, it is also very advantageous in that the positional deviation of the smallest child plate in the width direction can be prevented.

[Brief description of drawings]

1 to 3 relate to a first embodiment of the present invention, and FIG. 1 is a vertical cross-sectional view showing a state in which an insert is attached to a leaf spring.

FIG. 2 is a partial perspective view of the leaf spring showing how the insert is attached to the leaf spring.

FIG. 3 is an overall side view of a leaf spring with an insert attached.

4 to 7 relate to a second embodiment of the present invention, and FIG. 4 is a perspective view of an insert.

FIG. 5 is a partial perspective view of a leaf spring showing a state in which an insert is attached together with a rebound clip.

FIG. 6 is a vertical cross-sectional view showing how the insert is attached to the leaf spring.

FIG. 7 is an overall side view of a leaf spring with an insert attached together with a rebound clip.

8 and 9 relate to a conventional example, and FIG. 8 is a perspective view of a flat insert.

FIG. 9 is a perspective view of an insert in which an engagement protrusion is formed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lap leaf spring insert 1e protrusion 2 Spring plate 3 Spring plate 4 Spring plate 5 Spring plate 8 Spring plate 9 Spring plate 10 Spring plate 20 Lap spring insert 20e Projection

Claims (3)

[Claims] 1. An insert for a leaf spring for a vehicle, wherein at least one spring is engaged with the spring plate so as not to move in the longitudinal direction and the width direction of the spring plate and is adjacent to the spring plate. An insert for a leaf spring, which is formed in a shape that covers the plate thickness and the entire circumference in the plate width direction. 2. An insert for a leaf spring for a vehicle, wherein two spring plates are engaged with the spring plate so as not to move in the longitudinal direction and the width direction of the spring plate and are adjacent to the spring plate. An insert for a leaf spring, which is formed in a shape covering the plate thickness and the entire circumference in the plate width direction. 3. An insert for a leaf spring for a vehicle, wherein a protrusion is formed for engaging with any one of the spring plates and preventing the spring plate from moving in either the longitudinal direction or the width direction. An insert for a leaf spring, which is formed in a shape that covers the plate thickness and the entire circumference in the plate width direction of at least one spring plate on the parent plate side with respect to the spring plate with which the projection engages.