JPH0628656Y2 - Mounting structure for leveling feet of the balance - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a mounting structure for a foot for leveling various balances.

<Prior Art> Generally, in various electronic balances or mechanical balances, the original measurement accuracy cannot be obtained unless the balance housing is installed horizontally. for that reason,
Normally, height adjusting mechanisms as illustrated in FIG. 4 (a) are provided at a plurality of places. That is, the female screw 41 is formed on the balance housing B, and the male screw portion 4 provided on the leveling foot 42 is provided.
The height of that portion with respect to the ground plane G is adjusted by adjusting the screwing amount of the female screw 41 of 2a.

Such leveling feet are provided, for example, at positions A ₁ and A ₂ shown in the bottom view of the balance housing B in FIG.
Both height for fixing the foot provided, and, A ₁
Balance housing B by adjusting the relative height of A and A _2.
It is possible to horizontally adjust the front, back, left and right.

<Problems to be Solved by the Invention> According to the conventional structure as described above, the adjusting screw 42 is excessively rotated during the horizontal adjusting work so that the male screw portion 42a thereof has the female screw 41.
If it comes off, as shown in Fig. 4 (b),
For example, the horizontal adjustment foot 42 may fall in the direction of the arrow L, and the balance housing B may drop sharply at this portion as shown by the arrow D and largely tilt as a whole.

In such a case, the shock will affect the balance mechanism in an extremely precise balance, or, especially in a large-capacity large-scale balance, fingers may be caught between the grounding surface G and the balance housing B to prevent injury. There was a problem such as doing.

Or, in the case of a balance with a large capacity, it is usually necessary to make the measuring pan large, so four feet are provided (Fig. 5A).
₁ to A ₄₎ is, in this case, since the horizontal adjustment very difficult to perform, the balance ends up greatly inclined, occur aforementioned problems easily while you are again horizontal adjustment. In order to improve this point, adjustment feet A ₁ , A ₂ , A ₃ , and A _{4 have been} conventionally used.
Among the fixed feet F, the one that is supported by only three of A ₁ , A ₂ , and F to perform horizontal adjustment at first, and after adjusting, screw out A ₃ and A ₄ to prevent falling down. However, the cost increased due to the fixed foot F.

The object of the present invention is to prevent the balance housing from being abruptly tilted even if the adjusting foot is turned too much.
It is to provide a mounting structure for a leveling foot of a balance.

<Means for Solving the Problems> In order to achieve the above object, in the present invention, as shown in FIG. 1, FIG. 2 or FIG. 3 corresponding to the embodiment, a female screw into which the horizontal adjusting foot 2 is screwed. 1, a portion of the balance housing B having a predetermined length 1 from the bottom surface, and the horizontal adjustment foot 2
At least one of the portions having a predetermined length 1 from the upper end of the male screw portion 2a of the male screw portion 2a is made a hole 1a having a diameter smaller than the root diameter dimension of the female screw by a predetermined minute dimension.
Regarding a, the bar 2b has a diameter smaller than the root diameter by a predetermined minute dimension.

<Operation> By providing at least one of the hole 1a and the rod 2b, even if the male screw portion 2a and the female screw 1 are disengaged from each other, the hole 1a or the rod 2b has the outer diameter of the male screw portion 2a. The horizontal adjusting foot 2 maintains a posture substantially equal to the meshed state without tipping over, by abutting against the surface or the inner diameter surface of the female screw 1 and interfering with each other.

<Embodiment> FIG. 1 is a longitudinal sectional view showing a structure of an embodiment of the present invention, (a) shows a state where screws are engaged, and (b) shows a state where the engagement is disengaged.

This embodiment is an example in which measures are taken on the female screw side.

That is, the female screw 1 formed on the balance housing B
No thread is formed in the portion of the balance housing B from the bottom surface of the length l, and this portion has a hole 1a having a diameter slightly larger than the root diameter of the female screw 1. A horizontal adjusting foot 2 having a male screw portion 2a equivalent to the conventional one is screwed into the female screw 1.

With this structure, even if the horizontal adjustment foot 2 is turned too far from the state shown in FIG. 1 (a) and the screw is disengaged as shown in FIG. 1 (b), the male screw portion 2a has a hole 1a The horizontal adjustment foot 2 keeps an almost upright posture by contacting the inner peripheral surface, and the balance housing B hardly tilts.

FIG. 2 is a vertical sectional view showing the structure of another embodiment of the present invention.
Similarly, (a) shows a state where the screws are engaged, and (b) shows a state where the engagement is disengaged.

In this embodiment, the female screw 1 is the same as the conventional one, and measures are taken on the male screw portion 2a side.

That is, no screw is formed in the portion of the horizontal adjusting foot 2 having a length 1 from the upper end of the male screw portion 2a, and this portion is a rod 2b having a diameter slightly smaller than the root diameter dimension of the male screw 2a.

According to this structure, from the state shown in FIG.
Even if the screw is disengaged as shown in (b) of the figure by turning, the outer peripheral surface of the rod 2b contacts the inner diameter surface of the female screw 1,
The leveling foot 2 likewise remains in an almost upright position.

It should be noted that the length 1 in each of the above embodiments is slightly larger than, for example, the outer diameter dimension of the male screw portion 2a or the inner diameter dimension of the female screw 1 so that the horizontal adjustment foot in the disengaged state of the screw is released. The posture of No. 2 can be sufficiently stabilized.

FIG. 3 is a longitudinal sectional view showing the structure of still another embodiment of the present invention. Similarly, (a) shows the screw engagement state and (b) shows the engagement disengagement state.

In this example, measures are taken for both the female screw 1 and the male screw portion 2a, and the female screw 1 has a hole 1a similar to that of the example of FIG.
The male screw portion 2a is provided with a rod 2b similar to the example of FIG.

In this example, the interference length (corresponding to the length l in FIGS. 1 and 2) that prevents the horizontal adjusting foot 2 from falling over in the disengaged state is the sum of the lengths of the hole 1a and the rod 2b. There is an advantage that the posture of the leveling foot 2 in this state can be more stabilized.

<Effect of the Invention> As described above, according to the present invention, by forming an unthreaded hole or rod in at least one of the internal thread of the balance housing and the external thread of the leveling foot, the screw is formed. Even if the meshing is disengaged, the horizontal adjustment foot remains almost upright, and the balance housing suddenly tilts during adjustment, affecting the balance mechanism, or there is no problem of pinching fingers. .

This means that in the case of a large-scale balance with a large weighing capacity, which had conventionally been forced to have four legs because it had a large-scaled weighing pan, fixed feet of a predetermined length were used so that horizontal adjustment would not be difficult. There are some that have taken measures such as provision of the above, but this also leads to the elimination of this.

For the purpose of preventing the leveling foot from tipping over, it is conceivable to lengthen the male screw part so that its tip projects from the top surface of the balance housing and fix the lock nut or resin to the tip. The present invention is far more advantageous in view of the cost of parts and parts.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing the structure of an embodiment of the present invention, FIG. 2 is a vertical sectional view showing the structure of another embodiment of the present invention, and FIG. 3 is a structure of yet another embodiment of the present invention. FIG. 4 is a vertical sectional view showing a mounting structure of a conventional horizontal adjusting foot, and FIG. 5 is an explanatory view of a mounting position of the horizontal adjusting foot of the balance. 1 ... Female screw 1a ... Hole 2 ... Horizontal adjustment foot 2a ... Male screw part 2b ... Rod B ... Balance housing

Claims (1)

[Scope of utility model registration request] 1. A balance having a horizontal adjusting foot having a male screw portion screwed into a female screw formed in a balance housing, wherein a portion of the female screw having a predetermined length from a bottom surface of the balance housing and a predetermined portion from an upper end of the male screw portion. At least one of the length portions is a hole having a larger diameter by a predetermined minute dimension than the root diameter dimension of the female thread, and a hole having a smaller diameter by a predetermined minute dimension than the root diameter dimension of the male thread portion. The structure for attaching the horizontal adjustment foot of the balance, which is characterized by using a bar.