JPH082712B2 - Vertical rail connecting device for drafting machine - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a vertical rail connecting device for a drafting machine, and more particularly to a vertical rail connecting device for a drafting machine in which attachment / detachment of a vertical rail and a horizontal carriage is quick and easy. It is about.

[Prior Art] A conventional vertical rail coupling device for a drafting machine is a horizontal carriage that can travel on a horizontal rail, and a bracket provided at the upper end of the vertical rail is connected by a pivot screw, and the vertical rail connects the pivot screw. As a fulcrum, it is generally rotatable up and down. However, the above-mentioned joining work is performed by tightening the pivot screws provided on both sides of the horizontal carriage or the bracket,
Furthermore, the lock nut must be tightened, which requires time and is not efficient. Also, depending on the tightening of the pivot screw, the vertical rail may not rotate smoothly in the vertical direction,
If the tightening is insufficient, rattling occurs, which makes it difficult to adjust.

Therefore, in order to eliminate these drawbacks, the bracket of the vertical rail and the horizontal carriage are connected by an open bearing and a support shaft, and a fixing member such as an arm provided on the open bearing side is engaged with the support shaft. It is also known to combine them to prevent the bracket from coming off the lateral carriage.

[PROBLEMS TO BE SOLVED BY THE INVENTION] The above-described open rail bearing and support shaft connecting the vertical rail bracket and the horizontal carriage has a hook-shaped fixing member that is locked to the support shaft. Prevents separation from the horizontal carriage. Therefore, when removing the vertical rail from the horizontal carriage, the vertical rail can be removed only after the fixing member is operated to release the engagement with the support shaft.

Since the fixing member is elastically contacted with the support shaft by the urging force of a spring or the like, the fixing member is manually operated to release the engagement in opposition to the urging force of the spring, and the vertical rail is maintained while maintaining the released state. The work of lifting and removing is not good.

Therefore, there is a technical problem to be solved in order to enable reliable connection with a simpler operation without requiring the operation of the fixing member or the like, and to improve workability of the attachment / detachment work. The object is to solve the problem.

[Means for Solving the Problems] The present invention is proposed in order to achieve the above-mentioned object, and includes a bracket for a vertical rail on which a drawing head is mounted and a horizontal carriage for a horizontal rail, a support shaft, and an open bearing. In the drafting machine which can be engaged and disengaged by means of the locking pin 10 at one of the bracket 6 and the horizontal carriage 4 at a position vertically displaced from the axis of the support shaft 9 and the open bearing 13.
And a hook lever that engages with the locking pin 10 on the other side.
15 is pivotally attached, and the locking pin is provided by a biasing means such as a spring 16.
A stopper pin 19 that engages with the hook lever 10 and restricts the rotation range of the hook lever 15 is provided. When the vertical rail 5 is rotated upward with respect to the horizontal carriage 4 with the support shaft 9 as a fulcrum, It is intended to provide a vertical rail connecting device for a drafting machine, characterized in that the attachment position of the stopper pin 19 is set so that the hook lever 15 and the locking pin 10 are disengaged from each other.

[Operation] When the bracket of the vertical rail is mounted from above the horizontal carriage, the support shaft and the open bearing are fitted together, and at the same time, the locking pin and the hook lever are engaged, and the vertical rail and the horizontal carriage are connected.

When the vertical rail is removed, if the lower portion of the vertical rail is tilted upward with the support shaft as a fulcrum, the hook lever pivotally attached to the bracket tilts around the support shaft as a whole. At this time, since the rotation range of the hook lever itself is restricted by the stopper pin, the hook lever is disengaged from the locking pin of the horizontal carriage, and if the vertical rail is lifted up in this state, the hook is removed from the horizontal carriage.

[Embodiment] An embodiment of the present invention will be described below in detail with reference to the attached drawings. In FIG. 1, 1 is a drafting machine, 2 is a drafting board, 3 is a horizontal rail fixed to the upper edge of the drafting board 2, 4 is a horizontal carriage that can run along the horizontal rail 3, and 5 is a vertical rail. It is a rail. The vertical rail 5 has a bracket 6 fixed to the upper part thereof attached to a horizontal carriage 4, and a vertical carriage 7 is vertically movably mounted, and a drawing head 8 connected to the vertical carriage 7 vertically and horizontally on the drawing board 2. It is formed so that it can be moved to.

FIG. 2 shows the rear surface of the horizontal carriage 4 mounted on the horizontal rail 3, and support shafts 9 and 9 into which the brackets 6 of the vertical rails 5 are fitted are projectingly provided on the left and right sides of the rear portion of the horizontal carriage 4. . Locking pins 10 and 10 are provided above the support shafts 9 and 9 in parallel with the support shafts 9 and 9.

As shown in FIG. 3, the vertical rail 5 connected to the horizontal carriage 4 via the bracket 6 has the bracket 6 attached to the upper end portion (right in the drawing). The bracket 6 has a width substantially the same as that of the support portion 11 above the horizontal carriage 4 shown in FIG.
Groove-shaped open bearings 13, 13 are formed respectively.

Shafts 14 and 14 are provided above the open bearings 13 and 13, and
Pivot the hook levers 15, 15. 16, 16 are springs,
The hook levers 15, 15 are wound around the shafts 14, 14 and press the pins 18, 18 on the side faces of the hook levers 15, 15 with the upper wall 17 as a fulcrum.
Although 15, 15 are urged clockwise in the figure, the hook levers 15, 15 are stopper pins 19, 1 protruding from the both side walls 12, 12.
Abutting on 9, the rotation is restricted.

Next, a procedure for attaching and detaching the vertical rail 5 will be described with reference to FIGS. 4 to 6. First, at the time of mounting, the bracket 6 is positioned above the horizontal carriage 4. Next, the fourth
As shown in the figure, the vertical rail 5 is lowered so that the open bearings 13, 13 are fitted to the support shafts 9, 9. At this time, the cam portions 20 and 20, which are the inclined surfaces of the tip end portions of the buck levers 15 and 15, come into contact with the locking pins 10 and 10 of the horizontal carriage 4, and the hook levers 15 and 15
Is rotated counterclockwise in FIG. And the locking pin 1
When 0 and 10 have passed the apex of the cam portions 20 and 20, the hook levers 15 and 15 are rotated clockwise by the urging of the springs 16 and 16, and as shown in FIG. While engaging with the locking pins 10 and 10 at the lower inclined surfaces 22 and 22, the support shafts 9 and 9 and the open bearings 13 and 13 are fitted to complete the mounting. In this state, the locking pin 10,10 is moved upward, that is, the bracket 6 and the horizontal carriage by the combined force of the rotating force of the hook lever 15,15 by the spring 16,16 and the lower inclined surface 22,22 of the hook portion 21,21. It is urged in the direction to combine 4 and. Therefore, the support shafts 9 and 9 and the open bearings 13 and 13 do not come into pressure contact with each other and play does not occur, and rattling is prevented.

Next, as shown in FIG. 6, when removing the vertical rail 5 from the horizontal carriage 4, the lower portion of the vertical rail 5 (left in the figure) is lifted. At this time, the bracket 6 rotates about the support shafts 9 and 9 as a fulcrum, and the hook levers 15 and 15 also engage the locking pins 10 and 10.
While keeping the pressure contact state to, it rotates clockwise,
When it is rotated by a certain angle, it comes into contact with the stopper pins 19 and 19 to restrict the rotation, and the hook portions 21 and 21 of the hook levers 15 and 15 move in a direction away from the locking pins 10 and 10. Then, when the vertical rail 5 is further tilted, the hook portions 21 and 21 are disengaged from the locking pins 10 and 10, and the bracket 6 is moved to the horizontal carriage 4.
The vertical rail 5 can be removed. Thus, the vertical rail 5 can be attached and detached only by the turning operation.

The present invention should not be limited to the above embodiment, and although not shown in the drawings, contrary to the embodiment, a support shaft and a locking pin are provided on the vertical rail, and an open bearing and a hook lever are provided on the horizontal carriage. Various modifications can be made, such as by disposing the above structure so that the top and bottom are reversed. And it goes without saying that the present invention extends to those modifications.

[Effects of the Invention] As described in detail in the above-mentioned embodiment, the present invention can be mounted only by fitting the bracket of the vertical rail to the horizontal carriage. Further, when removing the vertical rail, it is sufficient to rotate the vertical rail by a predetermined angle, and the operation of the locking member or the like is unnecessary. Therefore, handling of the drafting machine during installation, transportation, and the like becomes extremely easy, and operability can be improved by speeding up the work.

[Brief description of drawings]

FIG. 1 is a front view of a drafting machine, FIG. 2 is a perspective view of a horizontal carriage, FIG. 3 is a vertical cross-sectional side view showing a main portion of a bracket, and FIGS. 4 and 5 are main portions when a vertical rail is mounted. FIG. 6 is a vertical sectional side view showing the operation of FIG. 6, and FIG. 6 is a vertical sectional side view showing the time when the vertical rail is removed. 1 …… Drafting machine 3 …… Horizontal rail 4 …… Horizontal carriage 5 …… Vertical rail 6 …… Bracket 8 …… Drawing head 9 …… Support shaft 10 …… Locking pin 13 …… Opening bearing 15 …… Foot lever 16 ...... Spring 19 …… Stupper pin

Claims (1)

[Claims] 1. A drafting machine in which a bracket of a vertical rail for mounting a drafting head and a horizontal carriage of a horizontal rail can be freely engaged and disengaged by a support shaft and an open bearing, and one of the bracket 6 and the horizontal carriage 4 is provided. A locking pin 10 is provided at a position vertically displaced from the axis of the support shaft 9 and the open bearing 13, and a hook lever 15 that engages with the locking pin 10 is pivotally attached to the other end, and a spring 16 A stopper pin 19 that engages with the locking pin 10 by an urging means such as the like and restricts the rotation range of the hook lever 15 is provided, and the vertical rail 5 is attached to the horizontal carriage 4 with the support shaft 9 as a fulcrum. When it is rotated upwards, the hook lever 15 and the locking pin 10
A vertical rail connecting device for a drafting machine, characterized in that the mounting position of the stopper pin 19 is set so that and disengage from each other.