JPS5820745Y2 - Pipe expansion/contraction device in a device that connects a point on the floor to the ceiling directly above. - Google Patents

Description

[Detailed explanation of the invention] (Purpose of the invention) This invention is based on the design drawings on the floor surface in advance when placing lights on the ceiling, or when installing pillars, partition walls, etc. to divide a large room. This allows the user to easily find the location where the reference point, which was previously set, should be placed on the ceiling surface at the upper end of the vertical line.

(Prior art) How to find a common point on the ceiling directly above by aligning the position of a light fixture on the ceiling or the position of a pillar or partition wall used to partition a large room with a reference point marked on the floor. The plumb bob was lowered from the ceiling using a stepladder, and the plumb bob had to be adjusted to a reference point while calming the swing, which was very time-consuming and inconvenient for one person to do.

(Structure of the device) This device is equipped with projecting claws that hit the ceiling surface, and a marking board with a guide on the outer periphery that moves while contacting the ceiling surface is installed at the upper end, and a transparent monitor with a measuring device inside. An inlet/outlet tube is elastically elastically mounted on a tube body having a section in the middle, a handle is provided on each short tube connected to the lower end of the tube body and an upper end of the inlet/outlet tube, and these handles are provided so as to abut each other. The pump, which is elastically installed on the short tube of the inlet/outlet pipe, can be elastically engaged and detached from the hook provided on the short tube of the tube body, and the engagement and detachment of this hook is pivoted to the handle of the inlet/outlet tube. The measurement is carried out using a lever, and the embodiment will be explained below with reference to the drawings. In Figs. 1 to 3, the measuring tube main body 1 is hollow, and the lower part of the figure shows an inlet and an inlet and an outlet with different outer diameters. A reference claw 3 corresponding to a specific reference point on the floor surface A is provided at the lower end of the inlet/outlet pipe 2, and a reference claw 3 corresponding to a specific reference point on the floor surface A is provided near the upper end of the inlet/outlet pipe 2.
A long hole 4 is opened to regulate the stroke length of the ingress and egress,
Short tubes 6, 6' with handles 5, 5' attached are fitted to approximately the center of the inlet/outlet pipe 2 and the lower end of the tube body 1, respectively, by welding or other means, and the inlet/outlet pipe 2 is contracted into the tube body 1. When
These handles 5, 5 are brought into contact with each other.

A part of the short tube 6' is provided with an elastic catch 7 protruding to correspond to the claw hook 8 on the inside of the base of the handle 50, and the claw release lever 9
is rotatably attached to the handle 5' by a pin 10', and the base of the claw release lever 90 is eccentric to provide a cam surface 10.
Rotate the claw release lever 9 around the pin 10 to release the cam surface 10.
The fish 7 is connected so as to be removed from the catch 8.

The pin 11 is inserted through the short tube 6' and the inlet/outlet tube 2 at right angles to the axial direction, and the pin 12 is inserted through the overlapping portion of the inlet/outlet tube 2 and the tube body 1 and inserted into the elongated hole 4. The inlet/outlet tubes 2 are connected to each other so that they can go in and out of the tube body 1 by the length of the elongated hole 4, and spring seats N3, 13 are interposed between the pins 11120.
A coil spring 14 is interposed between the coil springs 14 and a guide 16 formed by a ball or piece of the marking board 150, which will be described later, pressed against the ceiling surface B by the stored force of the coil spring 14 during measurement.

The marking board 15 is fitted onto the upper part of the pipe main body 1, and a protruding claw 17 that hits the ceiling surface B is fitted in the center of the upper surface of the marking board 15 so as to be slidable up and down. It is rotatably supported by a plurality of bosses 18 protruding from the outer circumference at equal angles.

The prongs 17 are attached to the marking board 1 via the built-in supporting frame 19.
The trigger 24 at the lower end of the lever 23, whose upper end is attached to the supporting frame 19, is loosely fitted into the insertion hole 21 of the adjustment panel 20 installed in the frame 19 with a spring 22 interposed therebetween. It is connected so as to be locked into a single-shaped hole 25 bored in the tube body 1.

The see-through part 26 has a transparent tubular shape and forms a part of the tube body 1 with connecting parts 27 and 27 at both ends, and has an inner lumen 28 containing an aqueous system 2.
A measuring device 30 suspended from the 9 is installed inside, and a measuring board 31 having a center point is provided below the measuring device 30.

(Function of the invention) In this invention, in order to set the hanging position of the lamp on the ceiling surface B of the interior of the building (all illustrations are omitted), the floor surface A
To stand the tube body 1 vertically between the floor surface A and the ceiling surface B, first stick the reference protrusion 3 of the tube body 1 at a preset point on the floor surface A to make the tube body 1 almost vertical. .

Next, while holding and supporting the handles 5, 5 with your hands, pull the claw release lever 9 in the direction of the arrow shown in FIG. 2 with either fingertip.
Since the fried fish 7 is pressurized by the action part 10, the fried fish 7 is removed from the hook 8.

Therefore, the tube body 1 is pushed up by the elasticity of the coil spring 140 and the guides 16, 16 of the marking board 15 are pressed against the ceiling surface B, so that the tube body 1 stands upright between the floor surface A and the ceiling surface B.

Subsequently, when the inclination of the tube body 1 is corrected and made vertical so that the tip of the measuring device 30 in the inner cavity 28 of the transparent part 26 is aligned with the center point of the measuring board 31, the trigger 24 of the lever 23 is inserted into the elongated hole. 25
When removed from the lower part of the lever 23, the supporting frame 19 connected to the upper end of the lever 23 instantaneously pierces the ceiling surface B due to the repulsive force of the spring 22, forming a hitting point.

When the hitting points are completed, the trigger 24 is restored and the tube body 1 is pushed down in the opposite manner as described above. The catch 8 similarly descends and engages the fish 7, so the tube body 1 is moved to the next measurement position. Move it and continue the measurement work using the same operation.

(Effects of the invention) This invention has an inlet/outlet tube with a standard protrusion inside the tube body with a bullet, and a short tube that can be freely engaged and detached from the end of the tube body and the inlet/outlet tube by lifting and hooking. Since it is fixed, the tube body can be freely expanded and contracted by connecting and disconnecting the fish.
When moving around a construction site, it can be moved easily without getting stuck on the floor or ceiling.

[Brief explanation of drawings]

Figure 1 is an elevational view of the tube body when it is extended according to this invention, Figure 2 is a partially enlarged side view taken along the Y-Y line in Figure 1, and Figure 3 is the same z It is an enlarged side cross-sectional view partially broken along the line -2. Explanation of symbols of main parts, 1...Pipe body, 2...
- Inlet/outlet pipe, 3... Standard protrusion, 5, 5'...
...Handle, 6゜6...Short tube, 7...
Fried fish, 8...For claws, 11°12...
Pin, 15... Marker, 17... Protrusion claw, 26... Transparent part, 30... Measuring device, B... Ceiling surface.

Claims (1)

[Scope of utility model registration request] A marking board 15 is provided with a reference protrusion 3 at the bottom and guides 16 at three or more locations for moving the dot protrusion 17 to the dot position while contacting the ceiling surface B at the top. An L-shaped hole 25 is formed in the tube body 1, and a trigger 24 is formed at the lower end of a lever 23 connected to the projection claw 11. Measuring device 3 using a plumb bob or spirit level, etc.
In this device, a point on the floor surface having a see-through part 26 with a 0 inside in the middle is struck on the ceiling ff1B directly above, a long hole 4 in the axial direction into which the pin 12 provided in the tube body 1 is inserted is bored in the upper part, The inlet/outlet pipe 2 with the reference protrusion 3 fitted at the lower end is fitted into the tube body 1, and a spring 14 is interposed between the inlet/outlet pipe 2 and the tube body 1 so as to be elastically elastic in the axial direction. Short tubes 6 and 6' having handles 5 and 5' are respectively connected to the lower end of the pipe body 1 and approximately the center of the inlet and outlet pipe 2, and a pumping water 7 provided in the short tube 6' of the inlet and outlet pipe 2 and a claw hook 8 provided on the handle 5 of the tube body 1 can be elastically engaged and disengaged, and the base of the claw release lever 9 pivoted on the handle 5 of the inlet/output tube 2 is eccentrically attached to the cam surface 10. A tube expansion/contraction device in a device that connects a point on the floor that is in contact with the pumped water 7 to the ceiling directly above it.