JPS5815757Y2 - Frame height adjustment member - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a pedestal height adjusting member that is provided on the legs of a pedestal and adjusts the height of the pedestal.

Conventionally, in order to adjust the height using a plurality of bolts provided on the legs of a pedestal, as shown in FIG.
A pedestal 12 is provided below 1a, and the bolt head 11
By turning a, the pedestal 13 can be moved up and down to adjust the height.
I was setting the horizontal position.

However, in this case, the bolt head 11a and the pedestal 12
Since the contact area is large, the frictional force is large, and this has the drawback that when the bolt is turned, the pedestal slides sideways and comes off the bolt, making it impossible to install it in a fixed position.

For this reason, as shown in FIG. Efforts have been made to reduce the frictional force when the screws 14 are turned in combination, but even in this case, the screws 14 and the pedestal 15 do not match perfectly stably, making the pedestal 13 unstable. It had the following drawback.

This idea was made in view of the above points, and provides a pedestal height adjustment member that is stable by matching the bolt with the pedestal, has low frictional force, and can easily adjust the height. This will be described in detail below with reference to the drawings.

FIG. 2 shows an embodiment of this invention, in which the bolt 1 consists of a threaded portion 1a and a head 1b, and a protruding pedestal 2, which will be described later, is provided at the center of the lower surface of the head 1b. A shaft hole 1c is bored into which the shaft is loosely fitted.

The threaded portion 1a is screwed into a threaded portion 3a of a pedestal 3 provided above.

Further, a pedestal 2 is provided below the head 1b of the bolt 1, and the pedestal 2 has a shaft core 2a that loosely fits into the shaft hole 1c of the bolt 1, which is longer than the depth of the shaft hole 1c. To protrude.

That is, when the bolt 1 and pedestal 2 are set,
As shown in Fig. 4A, the lower surface of the bolt head 1b and the upper surface of the pedestal 2 always form a gap d without contacting each other, and the weight of the pedestal 3 is directly transmitted to the shaft 2a which is loosely fitted into the shaft hole 1c. It looks like this.

Furthermore, a vibration isolating material 4 such as rubber or synthetic resin may be attached to the lower surface of the pedestal 2.

FIG. 3 shows another embodiment of this invention, in which the shaft hole 1c is bored at the tip of the threaded portion 1a of the bolt 1, and the shaft core 2a is loosely fitted into the shaft hole 1c, and the holder is mounted. Set 2.

On the other hand, the pedestal 3 is supported by a nut 5 screwed into the threaded portion 1a, and the height of the pedestal 3 is adjusted by rotating the head 1b of the bolt 1.

Adjusting the height of the pedestal using the adjustment bolt of this invention constructed as described above can be done in exactly the same way as before, and not only does it require no skill, but the weight of the pedestal is reduced to the tip of the shaft center 2a. Since the bolt is received in a small area and there is no contact between the underside of the bolt and the pedestal 2, there is little surface friction when rotating the bolt (height can be adjusted with much smaller force than conventional bolts).

Furthermore, since the shaft core 2a and the bolt shaft hole 1c are loosely fitted, there is no risk of the bolt 1 and the pedestal 2 coming off.

Furthermore, since a gap d was formed between the bolt 1 and the pedestal 2,
Since vibrations and slight inclinations of the frame can be dealt with by simply tilting the bolt 1 as shown in the opening in Figure 4, it has excellent effects such as good stability.

[Brief explanation of drawings]

Figure 1 A2 is a side view showing a conventional height adjustment bolt, Figure 2 is a partially cutaway cross-sectional view showing one embodiment of the height adjustment bolt of this invention, and Figure 3 is another example of this invention. A side view showing the embodiment, FIG. 4A is a side view showing the state of use of FIG. 2. 1... Bolt, 1a... Threaded part, 1b... Head,
1c... shaft hole, 2... pedestal, 2a... shaft core, 3...
... Frame, 4... Vibration isolating material, 5... Nut.

Claims (3)

[Scope of utility model registration request] (1) Consisting of a bolt that is screwed into the frame and a pedestal provided below the bolt, a shaft hole is bored at the end of the bolt, and the shaft core that loosely fits into the shaft hole is inserted from the shaft hole. A pedestal height adjusting member having a long length and provided on the upper surface of the pedestal. (2) The gantry height adjusting member according to claim 1, wherein the shaft hole is formed in the center of the lower surface of the bolt head. (3) The pedestal height adjusting member according to claim (1), wherein the shaft hole is formed at the tip of the bolt thread portion.