JP2541349Y2 - Lock pins for scaffolding members - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock pin used for preventing a connecting portion of a scaffold member, mainly an inner support member thereof, from coming off.

[0002]

2. Description of the Related Art Connection of a scaffold member such as a strut member is usually performed.
The base of another scaffold member is fitted into the tenon provided at the tip of one scaffold member, and then a separately prepared lock pin is passed through the holes formed on the side surfaces of these tenon and base. This is done by inserting and retaining.

[0003] Therefore, the conventional connection operation requires two operations of fitting the scaffold member and inserting the lock pin, which is complicated. In addition, in order to increase work efficiency in the work of assembling a scaffold, usually, a large number of scaffold members are continuously fitted, and then the work is performed by inserting a lock pin for each connection portion. It is easy to forget to insert the
It is a danger.

[0004]

[Problems to be solved by the present invention] Therefore, the present invention eliminates the work of inserting the lock pin, makes the connection work more efficient,
Another object of the present invention is to provide a lock pin that is automatically inserted without performing a special operation in order to prevent forgetting to insert the lock pin.

[0005]

SUMMARY OF THE INVENTION According to the present invention, when a base portion of another scaffold member is fitted into a tenon portion provided at the tip of a scaffold member and connected to the tenon portion, the tenon portion is formed on the side surface of the tenon portion and the base portion. A lock pin that is inserted through the hole made and acts to prevent it from being removed, and is attached to one scaffold member,
A pin member elastically protruded from the hole of the scaffold member by a spring, enters a hole of another scaffold member and acts as a stopper, and a tip of the pin member at a portion facing the scaffold member fitting direction. When formed and fitted scaffolding members,
A vertical slope for retracting the pin member, and a side slope formed at a tip of the pin member facing the circumferential direction of the scaffold member and retracting the pin member when the scaffold member fitted to the tenon is twisted. It is a lock pin of a scaffold member characterized by having.

The lock pin may be provided at the tenon and protruded outward, or may be provided at the base of the scaffold member and protrude inward. It is a configuration to be provided, which is made of a substantially U-shaped plate material, a central portion is attached to a tenon end portion of the scaffold member,
The lock pin of the scaffolding member is characterized in that the leg portions at both ends have a leaf spring body that holds the pin member and elastically protrudes from the hole of the tenon.

[0007]

In the lock pin of the present invention, the pin member is urged by a spring to be protruded, and a vertical slope is formed at the tip, so that when the root of another scaffold member is fitted into the tenon, The pin member is once retracted and fitted without any trouble. When the holes of both members overlap, the pin member protrudes and penetrates both holes, and is prevented from falling off. Also, since the side slope is provided, when separating the two scaffold members, the connected two scaffold members are slightly twisted with respect to each other. Can be separated.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
This will be specifically described.

The lock pin 10 has a leaf spring body 11 provided with pin members 12 and 12.

The leaf spring body 11 is formed by forming a metal plate material into a substantially U-shape, and the legs 13 at both ends thereof are connected to the scaffold member 1.
4 can be inserted into the tip of the tenon portion 15. An arcuate portion 16 is provided in the middle of the leg 13 so that the leg 13 has good elasticity for expanding the tip of the leg outward. The central portion 17 of the leaf spring body 11 has contact pieces 18 and 18 projecting sideways and hooking pieces 19 projecting downward.
When the both ends 13, 13 are inserted into the tenon 15, the contact pieces 8, 18 abut against the front end surface of the tenon 15, and the hook pieces 19, 19 are formed on the inner periphery of the tenon 15. It is hooked on the surface and attached to the tip of the tenon part 15.

The pin members 12, 12 are made of a metal casting or the like, and are attached to the outer ends of the legs 13, 13 of the leaf spring body 11, respectively. The base portion 20 of the pin member 12 has a cylindrical surface whose tip surface matches the inner peripheral surface of the tenon portion 15, and hits the peripheral portion of the hole 21 on the inner peripheral surface of the tenon portion 15.
It has a short cylindrical shape , is fitted into the hole 21, and the tip 23 projects out of the hole 21.

The distal end portion 23 of the pin member 12 has a shape in which a vertical slope 24 is formed by obliquely removing the upper end of the cylindrical shape, and a horizontal slope 25 is formed by obliquely removing the horizontal end portion. . Note that the side slope 25 is formed by both the pin members 12 and 12.
It is provided so as to be located on the right side when viewed from the upper end of the tenon 15.

Since the lock pin 10 has the above configuration, it is used as follows.

The lock pin 10 is inserted in advance from the front end of the tenon portion 15 of the scaffold member 14 and attached to the front end of the tenon portion 15 as shown, and the pin members 12, 12 are projected from the holes 21, 21. The leaf spring body 11
Is the mortise section 1 with the contact pieces 18, 18 and the hook pieces 19, 19
5, the mounting operation is auxiliary, and as will be described later in detail, even if the mounting operation is not performed, the pin members 12, 12 are always fitted into the holes 21, 21. The lock pin 10 does not fall off from the tenon portion 15.

When connecting another scaffold member 26 to this scaffold member 14, the root of the other scaffold member 26 is
, The lower end thereof hits the vertical slope 24, and the pin members 12, 12 are pushed into the tenon hole 21, and are fitted without any trouble. Thus, the hole 27 of the scaffold member 26 is
When the pin member 12 is overlapped with the pin 1, the pin member 12 protrudes and enters the hole 27 to perform a retaining function. When the scaffold member 26 is fitted into the tenon portion 15 to the back and the hole 27 does not overlap the hole 21, the scaffold member 26 may be rotated clockwise with respect to the scaffold member 14. When both holes overlap, the pin member 12 protrudes and rotation is stopped.

When separating the two scaffold members 14, 26,
When the scaffold member 26 is slightly rotated counterclockwise with respect to the scaffold member 14, the edge of the hole 27 hits the lateral slope 25, and the pin members 12, 12 are pushed into the mortise hole 21. 26 can be pulled out.

In the above embodiment, the pin member protrudes from the inside of the tenon member. As described above, the present invention has a configuration in which the pin member protrudes inward from the root of the scaffold member fitted into the tenon portion. In addition to the configuration using the leaf spring body having the above configuration, any configuration can be used as long as the pin member can be elastically protruded.

[0018]

[Effect of the invention] The lock pin of the invention is, as described above,
By simply attaching another scaffold member to the scaffold member in advance and inserting the other scaffold member into the tenon, the pin member is inserted into the hole and acts as a stopper, so that the conventional lock pin can be used by using this lock pin. The insertion work is omitted, and the connection work can be made more efficient. In addition, since forgetting to insert the lock pin is prevented, safety is also improved. Also, at the time of separation, the scaffold member is simply twisted slightly and pulled out, so that the efficiency of the separation operation is improved.

Further, when the lock pin is provided inside the tenon, when the scaffolding member is transported and stored, it can be prevented from being damaged or dropped by hitting another member or the like, and the handling can be prevented. Becomes more convenient.

[Brief description of the drawings]

FIG. 1 is a perspective view of one embodiment of the present invention.

FIG. 2 is a longitudinal sectional view showing a use state of the example.

FIG. 3 is a cross-sectional view showing a use state of the example.

[Explanation of symbols]

10 ... lock pin, 11 ... leaf spring body, 12 ... pin member,
13 ... leg, 14 ... scaffolding member, 15 ... tenon, 17 ... center, 18 ... contact piece, 19 ... hook piece, 21 ... hole, 2
Reference numeral 3: tip, 24: vertical slope, 25: horizontal slope, 26: scaffolding member, 27: hole

Claims (2)

(57) [Scope of request for utility model registration] 1. A tenon provided at a tip of a scaffold member,
A lock pin that is inserted through holes formed in these tenon portions and the side surfaces of the mortise portion when the root portions of the other scaffold members are fitted and connected to each other, and serves as a retaining pin. A pin member attached to the member, elastically protruded from a hole of the scaffold member by a spring, and entering a hole of another scaffold member to prevent the pin member from slipping off; Formed in the part facing
When the scaffold member is fitted, a vertical inclined surface for retracting the pin member, and a tip portion of the pin member, which is formed in a portion facing the circumferential direction of the scaffold member, when the scaffold member fitted to the tenon is twisted, A lock pin for a scaffolding member having a lateral slope for retreating the member. 2. The device according to claim 1, wherein the center portion is attached to a front end of a tenon portion of the scaffold member, and legs at both ends hold the pin member.
A lock pin for a scaffolding member, comprising a leaf spring body elastically projecting from a hole in a tenon.