JPH0720328U - Lock device for preventing the compass-type support lever from opening - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention aims to develop a structure that effectively prevents natural opening of a compass-type support. [Composition] Compass type support in which pipe members 2 with grounding wheels of the same length 2 and overlapping portions 3 and 3 which are bent in corresponding directions are provided at respective upper ends, and the overlapping portions 3 and 3 are connected by a shaft 4 to freely open and close. In the material 1, the overlapping portions 3 and 3 are slightly opened, and the engaging holes 5 and 5 overlapping each other are transparently provided in the overlapping portion. One end of the overlapping portion 3 is fixed to a chain, a metal rope, or the like. A locking device for preventing the opening of a compass-type support lever, wherein a stopper 7 connected to the other end of the string 6 is inserted into the engaging holes 5 and 5 at appropriate times so that it cannot be opened and closed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 According to the present invention, a pipe member 2 of the same length is provided with overlapping portions 3 and 3 which are bent at respective upper ends, and the overlapping portions 3 and 3 are connected by a shaft 4 to freely open and close. As for the known compass-type support member 1 such as the above, when the road wheels 11 and 11 at the lower ends of the respective pipe members 2 and 2 are moved on the road, the road is obstructed and the support member 1 inevitably moves. There is a lock device that prevents the free opening.

[0002]

[Prior art]

 The pipe members 2 and 2 of the same length are provided with overlapping portions 3 and 3 which are bent in the corresponding directions at the respective upper ends, and the overlapping portions 3 and 3 are connected by a shaft 4 so as to be freely opened and closed. Since the compass-shaped support member 1 can be opened and closed freely, the lower ends of the pipe members 2 and 2 and the grounding wheels 11 and 11 at the lower ends of the pipe members open when moving on the road or the like, which interferes with traffic and is supported. The movement of the material 1 also has a drawback that the smoothness is deteriorated.

[0003]

[Problems to be solved by the device]

 It is an object of the present invention to effectively prevent natural opening of the above-mentioned compass-type support material, and to develop a structure excluding the above-mentioned deficiency, and an object thereof.

[0004]

[Means for Solving the Problems]

 The locking device for preventing the opening of the compass-type support lever according to the present invention is adapted to the above-mentioned purpose, and the pipe members 2 and 2 of the same length are provided with overlapping portions 3 and 3 which are bent in the corresponding directions, and the overlapping portions In the compass-type support member 1 in which the parts 3 and 3 are connected by a shaft 4 so as to be freely opened and closed, engaging holes 5 and 5 that overlap each other are formed in the overlapping parts 5 and 5 at a slightly opened angle. The plug 7 connected to the other end of the chain 6 such as a chain or a metal rope having one end fixed to the one overlapping portion 3 is inserted into the engaging holes 5 and 5 in a timely manner so that it cannot be opened and closed. It is a feature.

[0005]

[Action]

 The locking device for preventing the opening of the compass-type support lever of the present invention is as described in the last section of the embodiment, in which the overlapping portions 3 and 3 which can be freely opened and closed by the shafts 4 of the pipe members 2 and 2 have a constant angle. A predetermined function is produced by the structure that can be locked so that it cannot be opened and closed by inserting a plug in the open part.

[0006]

【Example】

 FIG. 1 is a front view, FIG. 2 is a side view, FIG. 3 is an enlarged front view of essential parts, and FIG. 4 is a sectional view taken along the line AA in FIG.

Reference numeral 1 denotes a compass-shaped support member composed of pipe members 2 and 2 having the same length, and welded overlapping plates 3 and 3 bent in corresponding directions to respective upper ends, and the overlapping plates 3 and 3 are used as shafts. Connect by opening and closing with 4. The overlapping plates 3 and 3 are provided with engagement holes 5 and 5 that overlap each other at a slightly opened angle of the pipe members 2 and 2, and a chain 6 having one end fixed to one overlapping plate 3 and a string 6 such as a wire. The stopper 7 connected to the end is inserted into the engagement holes 5 and 5 at appropriate times and locked so that it cannot be opened and closed.

A short pipe 8 having a triangular shape is fixed to the lower ends of the pipe members 2 and 2, and shafts 9 projecting from both ends are passed through the pipes 2, and arms 10 and 10 are respectively attached to outer ends of the shafts 9 and 9. The pipes 12, 12 supporting the grounding ring 11 are fitted, and the pipes 14 projecting the pair of supporting arms 13, 13 are fitted on the inner ends of the shafts 9, 9, respectively. A supporting piece 15 having a through hole is fixed between the tips of the supporting arms 13, 13. As shown in FIG. 2, the pipes 14, 14 do not rotate completely, but the rod 16 described later can be rotated up to about 200 °.

A manhole cover key or the like is supported on each of the pipe members 2 and 2 of the compass-type support lever 1. When supporting the manhole cover key, the threaded portion 16a provided on the upper portion of the bar member 16 fitted in the center of the character-shaped hole of the manhole cover is passed through the through hole of the support piece 15, and the support piece is attached to the upper end portion. A nut 17 to be joined to 15 is screwed and a key 18 is projected to both sides of the lower end portion. The length of the protrusion of the key 18 should be within the length of the keyway of the manhole.

When the compass-type support member 1 of this embodiment is rolled and moved, the engagement holes 5 and 5 are overlapped and the plug 7 is inserted as shown in FIG. 2 is locked so that it cannot be opened and closed, and the rod 16 and the like are repelled as shown in FIG.

[0011]

[Effect of device]

 According to the present invention, the pipe members 2 and 2 when the compass-shaped support member 1 is moved can be locked so as not to be opened and closed by the engagement holes 5 and 5, and the doors are closed. There is an effect that the compass-shaped support member 1 does not have to be disturbed and does not suffer from the obstacle of the grounding wheel of the compass-type support member 1 opening.

[Brief description of drawings]

 The accompanying drawings show one embodiment of the present invention,

FIG. 1 is a front view,

FIG. 2 is a side view,

FIG. 3 is an enlarged front view of a main part,

FIG. 4 is a sectional view taken along line AA of FIG.

[Explanation of symbols]

1 → Compass type support 2 → Pipe 3 → Overlap
4-> shaft 5-> engagement hole 6-> string 7-> plug 8-> short pipe 9-> shaft 10-> arm 11-> grounding wheel 12-> pipe 13-> support arm 14-> pipe 15-> support piece 15a-> through hole 16-> rod Material 16a → screw part 17 → nut 18 → key

Claims (1)

[Scope of utility model registration request] 1. Pipe members 2, 2 of the same length are provided with overlapping portions 3, 3 bent in corresponding directions at respective upper ends thereof, and the overlapping portions 3, 3 are provided.
Compass-type support member 1 in which the shafts 4 are connected to open and close freely
In the above-mentioned, a cord 6 such as a chain or a metal rope in which engaging holes 5 and 5 overlapping each other are transparently provided in the overlapping portion at an angle at which the overlapping portions 3 and 3 are slightly opened, and one end is fixed to one overlapping portion 3 A locking device for preventing opening of a compass-type support lever, wherein a plug 7 connected to the other end of the compass-type support lever is inserted into the engaging holes 5 and 5 in a timely manner so that it cannot be opened and closed.