JPH0228751Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an assembly mechanism for a lifting portion of an office equipment, a table, a metal desk for drafting, and the like.

(Conventional technology) Conventionally, this type of metal desk, etc. has a
When using OA equipment on top of it, it is necessary to adjust the height of the top plate appropriately to match the OA equipment. It was raised and lowered by engaging a rack and pinion placed between the slide plate and the slide plate. In this case, the pinion that easily engages was inserted integrally with the horizontal shaft that rotates when the external handle is rotated, so it would be difficult to easily engage the pinion by retrofitting, so the top plate was removed. Elevating parts of the desk body other than the above (left and right side plates, slide plates, operation box, rear plate, etc.)
The structure was such that they were assembled into one unit at the factory.

(Problems to be Solved by the Invention) Due to the above-mentioned configuration, the following problems occurred in the assembling mechanism of the elevating part of the conventional metal desk of this type.

(1) The lifting parts (left and right side plates, slide plates, operation box, rear plate, etc.) of the desk body other than the top plate were assembled into one unit at the factory, so this type of metal desk, etc. Transportation costs increased, which led to higher costs.

(2) Since the elevating section described above is assembled in one piece at the factory, the types of models are naturally limited, making it difficult to widely provide a wide variety of metal desks, etc. that are compatible with the diversified variety of OA equipment. Ta.

(Means for Solving the Problems) Therefore, the present invention solves the above-mentioned problems of the prior art.The present invention is a separation method in which the easily engaged pinions are detachably assembled to the horizontal shaft in an easily engaged state. As a result, the elevating part of the desk body can be transported in pieces, and assembly at the site can be standardized in a variety of ways. An object of the present invention is to provide an assembly mechanism for an elevating part. The feature of this invention is that in the assembly mechanism, the top plate placed on the left and right side plates via slide plates is raised and lowered by the meshing operation of the rack and pinion. The side plate near this rack has a shaft support that supports the inner diameter and a guide that supports the outer diameter of the notch. The pinion is arranged to be rotatable, and a horizontal shaft with a pin that rotates when the external handle is turned is detachably inserted into the pinion by fitting the pin into the notch. It's what I did.

(Function) When assembling a metal desk, etc. with the above configuration on site, the left and right side plates, which are separated in advance, are placed upright at appropriate intervals, and a One end of the horizontal shaft is connected to a pinion that is rotatably housed in an engaged manner.
After the pin on the horizontal shaft is inserted into the notch of this pinion so that it is engaged, the other end of the horizontal shaft is fitted with a rack in the other side plate. When the rotatably housed pinion is fitted in such a way that the notch of the pinion fits into the pin of the horizontal shaft on this side, the left and right pinions are engaged with the racks on each side. Since it is rotatably supported by a shaft support and a guide at the bottom, it can be pivotally fitted to the horizontal shaft on each side in a perfectly centered state. Therefore, even if the elevating part of the desk body is formed separately, it can be assembled into a metal desk or the like as a single unit, allowing the top plate to be easily and quickly and reliably raised and lowered on site.
When the horizontal shaft of the lifting section assembled in this way is rotated by turning the external handle, the rack integrated with the slide plate that engages with the pinion on each side of the horizontal shaft will be rotated uniformly. Since it moves up and down, the top plate on the slide plate can be raised and lowered to any desired height position.

(Example) Hereinafter, an example of the present invention will be described based on the accompanying drawings.

As shown in Fig. 1 to Fig. 3, left and right side plates 2, 2 are set up on the upper part of the bases 1, 1 on each side, and a slide plate is placed above the side plates 2, 2. A top plate 4 is placed on one side through the racks 7, 7, and a rack 11 (to be described later) is placed inside the left and right side plates 2, 2 mentioned above.
In an assembly mechanism for an elevating part of a metal desk or the like, in which the racks 11 and pinions 12 are housed in a meshing manner, and the top plate 4 is raised and lowered by the meshing operation of each rack 11 and pinion 12. The left and right side plates 2, 2, which are the main parts of the elevating section (left and right side plates 2, 2, slide plates 7, 7, operation box 19, rear plate 21, etc.), are constructed as follows. (When these side plates 2, 2 are arranged at the left and right positions under the top plate 4, the internal configuration becomes bilaterally symmetrical, so one of them will be explained.) In other words, this side plate 2 As shown in the figure,
The interior is formed into a hollow rectangular vertical plate with a predetermined thickness due to the bending of a metal desk, etc., and a vertical tube 8 with an open center band is housed and fixed at one end of the interior, which is the hand side. . Further, a similar vertical cylinder 6 is housed and fixed at the other end of the side plate 2, which corresponds to the front part thereof, in a manner symmetrical to the vertical cylinder 5 described above. Inside the side plate 2 that extends over both vertical tubes 5 and 6, there is housed a slide plate 7 which is made of a metal plate bent into two folds to have a predetermined thickness so as to be movable up and down.

Shafts 8 are inserted horizontally into the upper and lower parts of one end of the slide plate 7 on the proximal side, and at both ends of each shaft 8 are rollers 9 that can move up and down within the vertical cylinder 5 at this position. It is fitted with a shaft. Further, a horizontal shaft-shaped roll 10 is inserted into the upper and lower positions of the other end side corresponding to the front part of the slide plate 7, and is arranged so as to be able to move up and down within the vertical cylinder 6 at this position. At an internal position on the other end side of the slide plate 7 near the roller 10, a rack 11 of a predetermined length that engages with a pinion 12, which will be described later, is installed in a vertical arrangement.

At a mid-height position of the side plate 2 near the rack 11, a shaft support 14 and a guide 16, which will be described below, are concentrically housed so as to be orthogonal to the slide plate 7. That is, as shown in FIG. 4, a horizontal hole of a predetermined diameter is formed in a part of the vertical tube 6, and the inner diameter is gradually reduced to form a tapered hole at the position of the horizontal hole on the outer side. A shaft support 14 is rotatably inserted through the shaft support 14 so that its rear outer diameter is supported by a bearing 15 fitted in a horizontal hole on this side.
In addition, a guide 1 with a flange whose inner diameter is formed into a cylindrical shape is provided at the horizontal hole position on the inner side of the vertical cylinder 6 described above.
6 is fixedly fitted with screws on the flange surface.

Between the above-mentioned shaft support 14 and guide 16,
A pinion 12 shown below which engages with the rack 11 is rotatably arranged. This pinion 12 is formed as follows. That is, as shown in FIG. 4, this pinion 12 is
A small-diameter cylindrical portion is concentrically protruded from the side surface facing the guide 16, and at one end of this cylindrical portion, a notch 13 in the shape of a single letter is provided for fitting and engaging a pin 18 of a horizontal shaft 17, which will be described later. It is formed to cross the hole. The pinion 12 according to this embodiment is
When engaged with the rack 11, its inner diameter is supported concentrically by the shaft support 14 fitted from one side, and the outer diameter of the notch 13 on the other side is supported by the guide on this side. 16, and is rotatably arranged by concentric support.

In this way, the rack 11 is mounted on the slide plate 7 in a vertical arrangement, and the pinion 12 that engages with the rack 11 is placed in the horizontal hole of the side plate 2, which accommodates the slide plate 7 so that it can be raised and lowered. Two symmetrical side plates 2, 2, which are rotatably arranged with a shaft support 14 that supports the shaft support 14 and a guide 16 that supports the outer diameter of the notch 13, are placed on both sides of the position that will become the metal desk A. When placed in an elevated position, between the front sides of the side plates 2, 2 where the shaft support 14 and the guide 16 are located, there is an operation box 19 that houses a horizontal shaft 17 inside as shown below. They will be arranged in a U-shaped assembly manner.

In other words, as shown in FIGS. 1 and 3 to 5, this operation box 19 is placed in close contact with the inside position of the front plate 3 between the side plates 2 and 2 when assembled to the metal desk A. It is formed into an internally hollow thin plate that will be placed in the A horizontal shaft 17 having the shape shown below is housed at a mid-height position inside the operation box 19 so as to be rotatable in a horizontal manner. This horizontal shaft 17 has a worm wheel 20 that engages orthogonally with a worm 23 on the handle 27 side, which will be described later, on an intermediate shaft on the right side, and both ends of the shaft portion slide on the tapered inner diameter surface of the shaft support 14 described above. The pin 18, which fits into the notch 13 of the pinion 12 described above, is inserted into the shaft portion adjacent to the tapered surface in a manner perpendicular to the shaft center. There is.

When the operation box 19 is arranged in a U-shape between the side plates 2, 2, the horizontal shaft 17 according to this embodiment allows the pins 18 of the shaft portions on both sides to fit into the notches 13 of the pinion 12 on each side. In this way, the tapered surface of each shaft end is connected to the shaft support 1 located deep inside.
By detachably inserting the pinion into the taper hole of No. 4, it is possible to rotate integrally with each pinion 12.

In the above-mentioned case, a short width rear plate 21 is installed at the proximal position of the right side plate 2 as shown in FIGS. 2 and 5, and this rear plate 21 and the aforementioned operation box 19 A worm shaft 22 with a handle 27 shown below is arranged between the worm wheels 20. That is, as shown in FIGS. 2, 3, and 5, this worm shaft 22 has a worm 23 that engages with the worm wheel 20 of the horizontal shaft 17 on the tip shaft, and a pin 24 that passes through the shaft. After the shaft is fitted with a metal ball, the tip of the shaft is supported by a dish-shaped bearing 26 containing a metal ball. In addition, the base end side of the worm shaft 22 is connected to the rear plate 2.
After penetrating the bearing 25 attached to the metal desk 1, a handle 27 formed to allow the knob 28 to be folded in is detachably attached to the shaft portion exposed to the outside, and the handle 27 is detachably attached to the shaft portion that is exposed to the outside. It is configured as an assembly mechanism.

When assembling the metal desk A having the above-mentioned configuration on site, the left and right side plates 2, 2, which have been delivered separately in advance, are arranged upright at appropriate intervals. As shown in FIG. 4, the pinion 12, which is rotatably housed in one of the side plates 2 (the left side plate 2 in the figure) by meshing with the rack 11, has this left side plate 2. The left end of the operation box 19 is brought close to the left end of the operation box 19, and one end of the horizontal shaft 17 protruding outward from that end is connected to the internal pinion 1.
The pin 18 on the side of the horizontal shaft 17 is fitted into the notch 13 of No. 2, and the shaft end formed on the tapered surface is inserted into the tapered inner diameter of the shaft support 14 located deep therein.

Although not shown, on the other end side (right side) of the horizontal shaft 17 according to this aspect, there is a rack 1 in the side plate 2 on this side.
A pinion 12, which is rotatably housed by meshing with a pinion 1, is attached to a horizontal shaft 17 which protrudes outward from the right end of the operation box 19, with the side plate 2 being close to the right end of the operation box 19. By fitting the notch 13 of the pinion 12 on this side into the pin 18 on the other end side, the left and right pinions 12 can be brought into engagement with the rack 11 on each side. Under the shaft support 14 on either side
Since it is rotatably supported by the guide 16 and the guide 16, the above-mentioned horizontal axis 1 is
7 can be easily and reliably fitted.

Due to the above, the elevating part of metal desk A (slide plate 7
Even if the left and right side plates 2, 2, the operation box 19, the rear plate 21, etc. that house the , the horizontal shaft 17 protruding from each end of the operation box 19 is connected to the pinion 1 on each side.
After inserting the pin 18 into the notch 13 of No. 2 so as to be integrally rotatable, the worm wheel 20 of the horizontal shaft 17 according to this embodiment is fitted with a worm shaft with a handle 27 from the rear plate 21 side. 22 are engaged with each other by a worm 23 at the tip of the shaft, and are connected so as to be able to be operated externally, thereby forming a metal desk A in which the top plate 4 can be raised and lowered easily, quickly and reliably. Can be assembled.

The horizontal shaft 17 of the lifting section assembled in this way
When the external handle 27 is turned by turning the external handle 27, the rack 11 integrated with the slide plate 7 that engages with the pinion 12 on each side of the horizontal shaft 17 moves up and down uniformly. Thus, the top plate 4 on the slide plate 7 can be smoothly raised and lowered to any desired height position.

In the above embodiment, the assembly mechanism of this invention was explained as being installed in the elevating part of the metal desk A.
This invention is not limited to the above-mentioned embodiments, but has the advantage that these devices can be transported in a separated state by being installed on a lifting section of a table, drafting desk, etc., for example.

(Effects of the invention) This invention is an assembly mechanism in which the top plate placed on the left and right side plates via slide plates is raised and lowered by the meshing operation of the rack and pinion. The side plate near this rack has a shaft support that supports the inner diameter and a guide that supports the outer diameter of the notch. The pinion is arranged to be rotatable, and a horizontal shaft with a pin that rotates when the external handle is turned is detachably inserted into the pinion by fitting the pin into the notch. It is characterized by the fact that Therefore, since the pinions that are easily engaged can be removably attached to the horizontal shaft, this type of lifting section can be transported in a divided state.
In addition, since the on-site assembly can be standardized in a variety of ways, when equipped on metal desks and other equipment, these devices can be assembled into a wide variety of elevating desks and elevating platforms at low cost. There is an effect.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a metal desk equipped with an assembly mechanism according to the present invention, Fig. 2 is a front view of the same, Fig. 3 is a side view of the same, and Fig. 4 is a part showing the side plate of the part shown in Fig. 1. A cross-sectional plan view, and FIG. 5 is a vertical cross-sectional side view showing the worm shaft with a handle taken along the - line in FIG. 1. Explanation of symbols, 1...Base, 2...Side plate, 3...
Front plate, 4... Top plate, 5, 6... Vertical tube, 7... Slide plate, 8... Shaft, 9, 10... Roller, 11...
...Rack, 12...Pinion, 13...Notch,
14... shaft support, 15... bearing, 16...
Guide, 17... horizontal axis, 18, 24... pin, 1
9... Operation box, 20... Worm wheel, 21
... Rear plate, 22 ... Worm shaft, 23 ... Worm, 25, 26 ... Bearing, 27 ... Handle, 2
8...knobs.

Claims (1)

[Scope of utility model registration request] In the assembly mechanism, the top plate 4 placed on the left and right side plates 2 via the slide plate 7 is raised and lowered by a meshing operation using a rack 11 and a pinion 12.
A rack 11 is mounted on the slide plate 7 in a vertical arrangement, and inside the side plate 2 near the rack 11 there are a shaft support 14 for supporting the inner diameter and a guide 16 for supporting the outer diameter of the notch 13. A pinion 12 that meshes with the rack 11 is arranged so as to be rotatable at the original height position, and the pinion 12
In this invention, a lifting part of a metal desk or the like is characterized in that a horizontal shaft 17 with a pin 18 that rotates when an external handle 27 is turned is engaged with the pin 18 removably inserted into the notch 13. Assembly mechanism.