KR100507026B1 - Shock absorbing apparatus of telescopic connecting long body - Google Patents

Abstract

A buffer device of an elongate flexible member constitutes an elongated flexible member by allowing the elongated member to be movable up and down with a clearance from an upper side to the elongated tubular member, and at the lower end of the elongated member, a space in the elongated tubular member. Is selectively provided, and when the elongated member descends, an air buffer means for compressing a downward space to suppress free fall, wherein the air buffer means includes: a receiving member provided at the lower end of the elongated member; The retaining shaft provided with a flange portion at the tip and protrudingly installed vertically below the member, and is held in such a way as to be able to move up and down by insertion holes in the retaining shaft, in close contact with the inner wall of the long pipe member. It consists of a cap-shaped valve body which moves, and this valve body is provided with the some protrusion part in the flange part side, and when a long member descends, a valve body receives a receiving member side. Contact will be in at the same time as blocking the air passage through the insertion hole, when the elongated member configured to rise does not inhibit the passage of through the insertion through-hole in contact with the protruding portion of the valve body flange.

Description

SHOCK ABSORBING APPARATUS OF TELESCOPIC CONNECTING LONG BODY}

The present invention relates to a shock absorber for an elongate stretchable assembly, in which the upper side member does not fall naturally due to gravity in an elongate stretchable assembly such as a strut portion that can be lifted and lowered.

For example, there is an alligator stand 1 in which a drop bottle or the like is suspended so as to move freely (see FIG. 3). In this alligator stand 1, the support part 3 for suspending the said drop bottle to the leg part 2 is provided with the height adjustment knob 4 which is a height adjustment mechanism, The height adjustment knob 4 is fixed so as to be tightened from the base column 3a side.

However, if the clamping method of the height adjustment knob 4 is loose, the support column 3b may drop rapidly by the weight of the drop bottle, and the hanging mechanism 5 of the drop bottle and the support column 3b may fall. ) May be injured by hitting the head.

The present invention has been proposed in order to solve the above disadvantages, and in a long stretchable assembly such as a support portion that can be elevated and lowered, the long stretchable assembly of the upper flexible member is prevented from falling sharply by gravity. It is an object to provide a shock absorber.

In order to solve the said subject, in invention of Claim 1, an elongate tubular member and an elongate member are inserted into this elongate tubular member with the clearance from the upper side so that it can be elevated, and an elongate elastic coupling body is comprised, and it is provided in the lower end part of the said elongate member. In order to selectively block the space in the elongated tube member and to provide a cushioning device for an elongate stretchable assembly having an air buffer means for compressing the lower space and suppressing a buffered drop when the elongated member is lowered.

The air buffer means includes a receiving member provided at the lower end of the elongated member, a retaining shaft protruding vertically downward of the receiving member, and a flange portion at the tip thereof, and an insertion through hole in the retaining shaft. And a cap-shaped valve body which is held to be able to move up and down with a clearance therebetween and is in close contact with the inner wall of the long pipe member, and is provided with a plurality of protrusions provided on the flange part side. When lowering, the valve body contacts the receiving member side to block the air flow through the insertion hole, and when the long member rises, the valve body contacts the protruding portion of the flange to prevent air flow through the insertion hole. We propose a shock absorber of a long stretchable assembly with a configuration that does not.

Further, in the present invention, in claim 3, the long pipe member and the long member proposes a shock absorber of the elongated stretchable body which is a support portion constituting the alligator stand.

According to the invention of claim 1, when the long member descends the long pipe member, the air buffer means blocks the space in the long pipe member and compresses the air in the downward space in the long pipe member. This can prevent natural fall of the long member due to gravity.

Even if the air buffer means blocks the space in the long pipe member, there is some air circulation, so that the long member cannot be lowered in the long pipe member.

Next, when the long member rises in the long pipe member, since the air buffer means does not block the space in the long pipe member, the inside of the long pipe member does not become a negative pressure and therefore does not inhibit the rise of the long member. .

According to the invention of claim 2, when the elongated member is lowered, the valve body contacts the receiving member side to block aeration through the insertion through hole, and when the elongated member is raised, the valve body contacts the protruding portion of the flange portion. The air buffer means in the invention of claim 1 can thus be realized without impeding the airflow through the insertion through hole.

According to claim 3, in the alligator stand, the clamping operation of the support portion is loose, so that even if the long member is pulled out, the shocking fall can be prevented by the air buffer means.

Embodiment of the Invention

Next, one embodiment of a shock absorber for an elongate stretchable body according to the present invention is shown and described below with reference to the accompanying drawings.

The elongate stretchable body according to the present invention can be implemented, for example, as the strut portion 3 of the alligator stand 1 shown in FIG. 3 (see FIG. 1).

The alligator stand 1 stands on the base portion 3a on the leg portion 2 on which the caster 6 for movement is mounted, and at the same time, the support column 3b is placed on the upper side of the base pillar 3a. And a hanging mechanism 5 for suspending dropping bottles or the like on the top of the supporting column 3b, and forming a holding unit 3 composed of these base holding units 3a and the supporting column 3b. In addition, the height adjustment knob 4 for adjusting the height of the support column 3b is provided in the branch column 3a.

The support portion 3 is configured to be supported by the support column 3b so as to be liftable from the upper side of the base column 3a in the base column 3a with a clearance therefrom, and therefore, the inner diameter of the base column 3a. Silver is slightly larger than the outer diameter of the support column 3b. In addition, the lower end side of the base holder 3a is closed so that air is sealed by a plug member 7 of a suitable material.

On the other hand, the support column 3b is equipped with the receiving member 8 on the lower end side side which is inserted in the base column 3a. The receiving member 8 has a smaller outer diameter than the inner diameter of the base holder 3a, and allows air to flow between the inner wall of the base holder 3a.

Moreover, the holding member 8 protrudes vertically downward along the center axis | shaft, and the flange part 8b is provided in the lower end of this holding shaft 8a.

And the said holding shaft 8a is holding the cap-shaped valve body 9 which is an air buffer means so that it can be lifted up and down at a clearance. The valve body 9 is configured to have a shape extending downward, for example, by a synthetic resin having moderate elasticity, and has an insertion hole 10 for allowing the holding shaft 8a to be inserted with a margin. To form. Moreover, the projection part 11 is provided in the flange part 8b side at equal intervals so that the said insertion hole 10 may be enclosed, and these projection part 11 matched with the flange part 8b of the said holding shaft 8a. When contacted, the air passage between the adjacent protrusions 11 and between the support column 3b and the inner wall of the base column 3a is secured through the insertion hole 10. Moreover, the lower end side of the said valve body 9 has the outer diameter which can slide slidingly in close contact with the inner wall of the base column 3a.

In the alligator stand 1 which has the support part 3 of the above structure, a nurse etc. can hang a drop bottle and an infusion bag on the hanging mechanism 5 of the top part of the support column 3b. If the hanging mechanism 5 at the top of the support column 3b is in a too high position, the height adjustment knob 4 is loosened to shorten the support column 3b into the base column 3a.

At this time, if the hand is removed from the support column 3b in a state in which the height adjustment knob 4 is loosened by mistake, the support column 3b is in a state of free fall by gravity.

However, when the supporting column 3b falls, the valve body 9 comes into contact with the receiving member 8, so that the flow of air through the insertion through hole 10 is blocked, and the valve body 9 The inner wall of the base column 3a below is placed in an airtight state.

For this reason, the free fall of the support column 3b is suppressed by the buffer action by the compressive elasticity of air. And the support column 3b has a small flow of air through the insertion hole 10 in the state which the valve body 9 abuts on the receiving part 8, and the lower end side of the valve body 9 is a base support. (3a) It falls while sliding close to an inner wall (refer FIG. 1).

On the other hand, when lifting the support column 3b, the valve body 9 is pushed toward the flange portion 8b side of the holding shaft 8a in the receiving member 8. At this time, since the protrusion part 11 provided in the valve body 9 abuts on the said flange part 8b, it passes through the insertion hole 10 between the adjacent protrusion parts 11, and the support column 3b. ) And an air passage between the inner wall of the base column 3a.

Thereby, the air pressure in the base column 3a below the support column 3b does not become a negative pressure, and the support column 3b can be lifted smoothly.

In this way, even if the height adjustment knob 4 is loosely released from the support column 3b in a state where the height adjustment knob 4 is too loose, the support column 3b is safe because the descending speed is suppressed by the air buffering action, and the handling is more secure. It can be made easy.

As mentioned above, although the shock absorber of the elongate flexible body which concerns on this invention was demonstrated and demonstrated to the example applied to the alligator cylinder 1, of course, the elongate elastic body is not limited to the alligator cylinder 1, Even if it is another apparatus good.

As described above, according to the present invention, the tightening of the support portion of the elongated stretchable assembly is loose, and even if the elongated member is in a fall state, the drop speed can be suppressed by the air buffer means, and the handleability is excellent. In a case, what is more excellent in safety can be provided.

BRIEF DESCRIPTION OF THE DRAWINGS It is a principal part cross section explanatory drawing which shows an example of the strut part of an alligator stand using the shock absorber which concerns on this invention.

FIG. 2 is a cross-sectional explanatory view of a main part explaining the operation of the shock absorber when the support strut is lifted among the strut portions of the alligator stand shown in FIG. 1. FIG.

3 is an external perspective view showing an example of a conventional alligator stand.

(Explanation of the sign)

1: alligator stand 2: leg

3: landlord 3a: donor

3b: support column 4: height adjustment knob

5: hanging mechanism 6: caster

7: plug member 8: receiving member

8a: holding shaft 8b: flange

9: valve body 10: insertion hole

11: protrusion

Claims (3)

The long tubular member and the long tubular member having a play from the upper side thereof with a clearance therefrom are formed to form a long stretchable joint, and at the lower end of the long member, the space in the long tubular member is selectively interrupted, As a shock absorber of an elongate stretchable body having an air buffer means for compressing the downward space and suppressing free fall when the elongated member descends, The air buffer means includes a receiving member provided at the lower end of the elongate member, a retaining shaft protruding vertically downward of the receiving member, and a flange portion at the tip thereof, and a retaining shaft in the insertion through hole. And a cap-shaped valve body which is held up and down by a play and slides in close contact with the inner wall of the long pipe member. The valve member has a configuration in which a plurality of protrusions are provided on the flange side. When lowering, the valve body contacts the receiving member side to shut off the air through the insertion through hole, and when the long member rises, the valve body contacts the protruding portion of the flange and does not impede the air through the insertion through hole. A long stretchable shock absorber characterized in that the configuration. delete The shock absorber according to claim 1, wherein the elongated tubular member and the elongated member are props constituting the alligator stand.