JPS59912Y2 - dental unit table - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a table for a dental unit.

This type of conventionally known table is installed at the end of an arm that extends from a unit placed on the left side of the chair, and during treatment, after the patient is seated in the chair, the table is placed over the patient. It is used by moving it through the front and positioning it on the right side of the patient's head.

Therefore, when the patient leaves the chair after treatment,
The table on the right side of the patient's head must be moved back toward the unit on the patient's left side, and when another patient is seated again, the table must be moved from the patient's left side to the right side, constantly The table had to be moved a large distance, making it difficult to handle.

In this case, the table is always positioned on the right side of the patient's head from the lower right side of the chair via the swivel arm and the lifting arm. The object of the present invention is to provide a table for a dental unit that does not need to be moved by hand, has a small amount of movement, and can be easily handled.

Next, the present invention will be described in detail based on the illustrated embodiment. FIG. 1 is a side view of a chair equipped with a table according to the present invention, and FIG. 2 is a plan view.

A swing arm 4 is provided on the right side of the base 2 of the chair 1 via a vertical shaft 3 so as to be able to rotate horizontally while approaching the floor surface. An arm 5 is connected, and the lower end of a vertical leg rod 7 that rotatably supports the lower surface of a table 6 is connected to the tip of the lifting arm 5, so that the table 6 is always located on the right side of the backrest 8 of the chair 1. It is configured as follows.

The lifting arm 5 includes a block 10 provided above the tip of the swinging arm 4 so as to be rotatable in the horizontal direction via a vertical shaft 9;
Each block 10, 11 is provided between the table leg rod 7 and a block 11 provided at the lower end thereof so as to be rotatable in the vertical direction.

That is, as shown in FIGS. 3 to 5, this elevating arm 5 has a straight U-shaped cross section with both ends pivotally supported by a horizontal shaft 15.16 at the lower part of the block 10.11, and which also serves as a lower cover. A support rod 12, and a link which is disposed parallel to the support rod 12 and whose both ends are placed in the upper part of the block 10.11, and which is pivoted by a transverse shaft 17. It consists of a rod 13 and an upper cover 14 which is fixed to the support rod 12 so as to wrap around the connecting rod 13.

This connecting rod 13 is a connecting piece 19.20 that is supported on a horizontal axis 17.18, and a rod 21 that is connected between both connecting pieces 19.20.
A coil spring 22 is fitted on the outer periphery of the rod 21, and a slider 2 is provided on the block 10 side of the rod 21, and the rod 21 is compressed by one end of the coil spring 22. It is mounted on a shaft so that it can slide when the

Also, the support rod 12 and the connecting rod 1 inside the block 10
Approximately triangular bearing pieces 24 are provided on both sides of the shaft support 15. It is pivoted and connected so that

The table 6 is moved to an appropriate position on the right side of the patient's head after the patient is seated on the chair and the backrest 8 is reclined during treatment.

This rod assembly is obtained by horizontally rotating the lifting arm 5 connected to the swinging arm 4 and the iron arm and changing the angle of the lifting arm 5 in the vertical direction.

When the table 6 is raised upward, the elevating arm 5 rotates as shown by the chain line in FIG.

In this state, both end shaft portions 15.16 and 17.1 of the supporting rod 12 and the connecting rod 13 are connected to the blocks 10.11 at both ends.
Since the positions of 8 are diagonally shifted from each other, they can be rotated as shown by the chain lines in the figure.

Further, the connecting rod 13 has a moving element 2 which is compressed by a spring 22.
3 is slidably mounted on the rod 21, and this slider 2
3 and a bearing piece 24 provided in the block 10, so when the lifting arm 5 is in a horizontal state as shown by the solid line in FIG. 22 is strongly compressed and moved in the direction of the table leg rod side block 11.

However, when the elevating arm 5 is tilted as shown by the chain line in FIG. As a result, the link 25 supports the link 25 from below with a large angle of inclination that changes the inclination angle of the connecting rod 13 by one degree, and the coil spring 22 holds the position of the mover 23 by its elasticity. , the movable member 23 is prevented from returning, and the elevating arm 5 maintains its inclined state.

The compressive force of the coil spring 22 is applied to the table 6 and the leg rod 21.
The position of the slider 23 due to the rotation of the link 25 can be stopped at an appropriate position by the coil spring 22 at the desired angle setting position of the lifting arm 5. The arm 5 can be held stationary at a desired angular position.

As described above, the table for the dental unit according to the present invention is positioned from the lower part of the chair 1 to the right side of the chair via the swivel arm 4 and the elevating arm 5, so that the table for the dental unit according to the present invention is always placed on the right side of the chair, regardless of the start and end of treatment. Since it is located on the right side of the patient's head, unlike conventional unit tables, there is no need to move the table across the patient's front surface during the start and end of treatment, making it extremely easy to handle.

Further, the table 6 is supported via an elevating arm 5, which consists of a parallel supporting rod 12 and a connecting rod 13.
3 to connect the bearing piece 24 provided on the block 10 and the slider 23 via the support link 25.
This has the effect that the table 6 can be fixed at a desired inclination angle, and the height of the table 6 can therefore be maintained at a desired position with a light movement.

[Brief explanation of the drawing]

Fig. 1 is a side view of a chair equipped with a dental unit table according to the present invention, Fig. 2 is a plan view, Fig. 3 is a sectional view showing the structure of the elevating arm, and Fig. 4 is taken along line IV-IV in Fig. 3. 5 is a cross-sectional view taken along line VV in FIG. 3. In the figure, 1: chair, 2: pedestal, 3, 9: vertical axis, 4;
Swivel arm, 5: Elevating arm, 6: Table, 7: Leg rod, 8: Backrest, 10.11 Ni block, 12: Support rod, 13:
Continuous rod, 14: Upper cover, 15, 16, 17.18: Horizontal rod, 19.20: Connection piece, 21: Rod, 22: Coil spring, 23: Mover, 24: Bearing piece, 25: Supporting link.

Claims (1)

[Scope of utility model registration request] A swinging arm that can be rotated horizontally through a vertical axis is provided at the bottom of the chair, and a block that is rotatable around the vertical axis is provided at the tip of the swinging arm, and a block that can be rotated through the vertical axis extends vertically from the bottom of the table. A block is also provided at the lower end of the protruding leg rod, and between the two blocks are provided both ends of the connecting rod and the supporting rod of the lifting arm, which consists of a connecting rod with a coil spring fitted in the middle and a straight support rod. A support is provided between a slider which is rotatably connected to the slider and is slidable in a state where it is compressed by a coil spring on the connecting rod, and a bearing piece provided in the swing arm side block. A table for a dental unit, characterized by connecting links.