JPH0988010A - Coupling tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform mounting even at a limited space and to provide a cushioning function against high and low displacement of an object to be coupled. SOLUTION: When a force in the direction of an arrow mark A is applied on a coupling tool 10, third rings 14C are about to separate from each other. Thereby, an angle θ of a rubber body 12 is decreased and a bending resistance force is generated and a cushioning function is worked through the resilient force and the shape characteristics of the rubber body 12. Further, in this case, since rubber of a gap (b) is stretched and rubber of a gap (a) is compressed, a cushioning function is provided by rubber with which a gap between first, second, and third rings 14A, 14B, and 14C is filled.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a connector for connecting two members.

[0002]

2. Description of the Related Art As shown in FIG.
The girder 16 is bridged between the bearings 18 installed at 0, and a slab (not shown) or the like is placed on the girder 16.

By the way, the girders 16 are bridged with a predetermined gap so that the girders do not collide with each other due to temperature change or the like.

Therefore, the girders 16 are connected to each other by a connecting device 52 such as a chain or an eye plate so that the girders 16 do not drop due to the shaking of the bridge pier 20 during an earthquake.

However, the connecting device 52 is merely a structure that allows a relative movement of the girder 16 with a clearance, and does not have a buffering function. For this reason, it is not possible to avoid collision between the girders 16 and, when the girders 16 behave largely, the chains and the like are fully extended and an impact load acts on the girders 16 and the coupling device 52.

In order to eliminate such an inconvenience, as shown in FIG. 9, a chain 54 arranged in a straight line is made into a cylindrical rubber 56.
A coupling device 58 embedded in the is also proposed. The connecting device 58 has a cushioning function, but the installation space is limited. Further, the cushioning function can be exhibited only by the elastic force originally possessed by the rubber 56.

[0007]

SUMMARY OF THE INVENTION In consideration of the above facts, the present invention is a connector which can be mounted in a narrow space and can exert a cushioning function against large displacement and small displacement of the object to be coupled. The purpose is to provide.

[0008]

In the connector according to the first aspect of the present invention, the curved connecting member is embedded in the curved elastic body. Both ends of this connecting member are connected to the connection target, and the connection target is connected.

Here, a case where the elastic body is U-shaped will be described as an example. When the objects to be connected tend to separate from each other, a compressive force acts on the outer side of the elastic body and a tensile force acts on the inner side of the elastic body via the connecting member, and the elastic force and shape characteristics of the elastic body try to pull back the object to be connected. The buffer function is demonstrated.

When the objects to be connected approach each other, a tensile force acts on the outer side of the elastic body and a compressive force acts on the inner side of the elastic body via the connecting member, and the object to be connected depends on the elastic force and shape characteristics of the elastic body. The buffer function that tries to pull things apart is exerted.

Thus, not only the elastic force of the elastic body,
A large cushioning function is exerted due to the shape characteristics of the elastic body.

Further, since the elastic body is curved, the installation space is not limited as compared with the conventional linear connecting tool.

In the connecting device according to the second aspect, the connecting member is composed of a chain. Therefore, as compared with the case where the connecting member has a structure in which the plates are pin-connected to be able to follow the movement of the object to be connected, it is easier to embed along the shape of the elastic body and the tensile strength is higher.

According to the third aspect of the present invention, a gap is formed in the connecting portion of the rings to be linked, and the elastic body is interposed in this gap.

That is, when the chain is pulled or compressed depending on the behavior of the object to be connected, the elastic body interposed between the adjacent rings receives the compressive force or the tensile force to repel, and The internal buffering function is demonstrated.

Therefore, as compared with the case where the chain is embedded in the elastic body without leaving a gap in the connecting portion of the ring, a larger cushioning function can be exerted.

In the connecting device according to the fourth and fifth aspects, the cushioning function can be changed by disposing the reinforcing layer or the elastic body having a different elastic modulus.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 and 2, a connector 10 according to this embodiment includes a rubber body 12 having a circular cross section and curved in a substantially V shape in a side view.

A chain 14 formed by crossing and linking five rings is embedded in the rubber body 12 along the shape of the rubber body 12.

The intermediate first ring 14A is located on the straight portion 12A of the rubber body 12. The first ring 14A includes the second ring 1 located on the inclined portion 12B of the rubber body 12.
4B is linked with an angle θ.

The first ring 14A and the second ring 14B
A gap a is provided at the intersection with and the second
A gap b is formed between the ends of the ring 14B.

Further, the rubber body 1 is attached to the second ring 14B.
The third ring 14C is linked in a state where the third ring 14C is exposed from the second half. The third rings 14C are erected parallel to each other from the rubber body 12, and as shown in FIG. 3, are connected by pins 24 to the brackets 22 protruding from the side surfaces of the girder 16.

For the sake of convenience of description, the expression "gap" is used, but these gaps are naturally filled with rubber and are integrated with the rubber body 12. Here, in the rubber body of the gap,
Embedding a reinforcing layer (for example, a fiber layer), or making the rubber body in the gap different from the elastic modulus of other rubber bodies, etc.
The cushioning function can be improved by changing the material. Moreover, the cross-sectional shape of the rubber body 12 is not limited to a circle, and may be an ellipse or a polygon.

Next, the operation of the connector 10 according to this embodiment will be described. When the bridge pier 20 shakes and a force in the direction of arrow A acts on the connector 10 during an earthquake, the third rings 14C tend to separate from each other. For this reason, the angle θ of the rubber body 12 becomes small and a bending resistance force is generated, and the elastic force and the shape characteristic of the rubber body 12 act as a buffering function for pulling back the girder 16. Further, at this time, the rubber in the gap b is pulled and the rubber in the gap a is compressed, so the rubber filled between the first ring 14A, the second ring 14B, and the third ring 14C also has a cushioning function. To be demonstrated.

Furthermore, even for the large behavior of the girder 16,
In the process of the rubber body 12 becoming a linear shape, a large cushioning function is exerted by the bending resistance force and the large elastic force between the rings,
Do not give a shocking force to the girder 16.

Further, since the connector 10 is curved, as shown in FIG. 3B, the limited space can be effectively utilized. Further, since the girders 16 are not sandwiched between them when they collide with each other, there is no risk of damage.

On the other hand, when the beam 16 approaches and a force in the direction opposite to the arrow A acts on the first connector 10, the third ring 14C
Try to get closer to each other. For this reason, the angle θ of the rubber body 12 becomes large, a bending resistance force is generated, and a cushioning function for separating the girder 16 from the elastic force and the shape characteristic of the rubber body 12 works. At this time, the rubber in the gap b is compressed and the rubber in the gap a is pulled, so that the first ring 14
The cushioning function is also exerted by the rubber filled between A, the second ring 14B, and the third ring 14C.

The magnitude of the load and the amount of displacement that the connector can support can be easily changed depending on the material of the rubber, the outer diameter of the rubber body, the shape of the rubber body, the length of the chain, and the like.

For example, like the connector 26 shown in FIG.
Chain 3 composed of seven rings on rubber body 28 in a substantially U shape
It is also possible to embed 0 so that a large amount of displacement can be accommodated, and the connector 3 shown in FIGS.
When the spacing between the girders is small like 2, 34, the chain 40 composed of three rings may be embedded in the block-shaped rubber bodies 36, 38 having a small curvature.

Further, in this embodiment, a gap is formed in the connecting portion of the chain ring so as to be filled with rubber. However, like the connecting tool 42 shown in FIG. Even if it is embedded in the rubber body 12 without providing a gap, a cushioning function can be exhibited.

[0031]

Since the present invention has the above-mentioned structure, it can be mounted even in a narrow space, and can exert a cushioning function against large displacement and small displacement of the objects to be connected.

[Brief description of drawings]

FIG. 1 is a perspective view showing a connector according to the present embodiment.

FIG. 2A is a side view showing a connector according to the present embodiment,
(B) is a plan view showing a connector according to the present embodiment.

FIG. 3A is a side view showing a state in which the spar is connected by the connecting tool according to the present embodiment, and FIG. 3B is a plan view showing a state in which the spar is connected by the connecting tool according to the present embodiment.

FIG. 4A is a side view showing a connector according to a modified example,
(B) is a plan view showing a connecting device according to a modification.

FIG. 5 is a side view showing a connector according to a modification.

FIG. 6 is a side view showing a connector according to a modification.

FIG. 7 is a side view showing a connector according to a modification.

FIG. 8 is a side view showing a state in which a spar is connected by a conventional connecting tool.

FIG. 9 is a side view showing a conventional connecting tool.

[Explanation of symbols]

 12 rubber body (elastic body) 14 chain (connecting member) 28 rubber body (elastic body) 30 chain (connecting member) 36 rubber body (elastic body) 38 rubber body (elastic body) 40 chain (connecting member)

Claims (5)

[Claims] 1. A connecting tool comprising a curved elastic body and a connecting member embedded in the elastic body in a curved state and having both ends connected to an object to be connected. 2. The connector according to claim 1, wherein the connecting member is formed of a chain. 3. The connector according to claim 2, wherein a gap is formed in the connecting portion of the rings forming the chain, and the elastic body is interposed in the gap. 4. The connector according to claim 3, wherein a reinforcing layer is embedded in an elastic body interposed in the gap. 5. The connector according to claim 3, wherein an elastic modulus of the elastic body interposed in the gap is different from elastic moduli of other elastic bodies.