JPH061929B2 - Door handle assembly for switchboard - Google Patents

Description

The present invention relates to a door handle assembly for a switchboard.

(Prior Art) A conventional normal door handle assembly for a switchboard includes a handle, a handle shaft fixed to the handle so as to rotate together with the handle, and a locking piece fixed to a front end of the handle. .

(Problems to be Solved by the Invention) The conventionally known handle body has a drawback in that it cannot be opened and closed accurately when the door of the switchboard box is opened and closed. For example, if the handle is rotated when the switchboard door is not completely closed, the locking piece will damage the box of the switchboard, and the locking piece and the box will be damaged. Also, when the handle of the closed switchboard is rotated to open it, the locking piece and the box are often damaged by friction.

Especially when performing work with the door of the switchboard open, the handle of the switchboard door moves arbitrarily and the locking piece protrudes from the outer peripheral edge of the door, causing the operator's head to collide with the locking piece and be injured. There was a risk.

(Means for Solving the Problem) An object of the present invention is to prevent the door handle of the switchboard from rotating unless the switchboard door is completely in contact with the box.

Another object of the present invention is to apply a special pressure to the handle of the door when the door of the switchboard is opened, and the handle is arbitrarily moved to be attached to the handle when the handle is not intentionally operated. It is to prevent the stop piece from protruding from the outer peripheral edge of the door.

A door handle assembly for a switchboard according to the present invention, which was invented to solve the above-mentioned conventional problems, comprises a lock body (13), a handle (14) fixed to the lock body and rotating together with the lock body, and a lock body integrally. No longer handle shaft (8), locking piece assembly (5) (20) (15) (21), cup for fixing the locking piece assembly to the tip side of the handle shaft so that it rotates with the handle shaft. A lock group (2) provided in the ring (3) and the lock body (13) so as to be locked and unlocked by a key.
3), a cap ring with a cylinder (2) surrounding the handle shaft (8) so that it rotates together with the lock body.
(1), a spring that elastically urges the handle (14) to protrude outward from the cap ring (1) by a certain distance in a normal state where the lock body (13) does not receive pressure from the outside.
(10), a connecting rod (18) connected to the lock group so as to be able to rotate together with the lock group in the lock body, and a handle corresponding to a certain rotational position of the connecting rod that is connected to move by the rotation of the connecting rod. A locking piece (91) is formed by projecting outward in a radial direction from a certain point around the shaft, and the handle shaft (8) is provided at another rotational position on the opposite side, which is 180 degrees away from the certain rotational position of the connecting rod. ), A slide (9) protruding outward in the radial direction to form a guide protrusion (92) at another point on the opposite side, which is 180 degrees away from a certain point, and a cylinder (2) of the cap ring (1). ) Formed on the inner surface of the slide locking piece (9
When 1) protrudes from the handle shaft (8), the locking piece (91) and the occlusal handle (14) protrude by the certain distance or to the opposite side (inward) by an external force. Regardless of being pushed, the handle shaft (8) is always prevented from rotating, while the lock body (13) is locked when the guide protrusion (92) of the slide (9) projects from the handle shaft. Push in the direction of assembly (5) (15) (20) (21) to handle
Guide the guide protrusion (92) so that (14) can be rotated in the opening / closing direction, and if the lock body (13) projects toward the handle by the spring (10), fix the guide protrusion (92) in its open / close position. Is a door handle assembly for a switchboard, which is composed of protrusions (30) and (31) forming locking grooves (22A) and (24A).

(Operation of the Invention) The operation of the handle assembly of the present invention will be described with reference to FIG.

Locking piece of slide (9) when lock group (23) is locked
The (91) protrudes around the handle shaft (8), and the guide protrusion (92) is hidden from the peripheral surface of the handle shaft (8). Therefore, the locking piece (91) is fitted in the locking groove (22A-1) formed on the inner surface of the cylinder (2) on the outer side thereof. Therefore, even if the lock body (13) is pushed to the side of the locking piece (21) to the maximum extent, the locking piece (91) rides over the height (hs) of the protrusion (30), that is, the locking groove (22A-1). I can't rotate in the desired direction because I can't.

When the lock group (23) is locked, the handle cannot be rotated regardless of whether the handle (14) is urged or left as it is.

On the other hand, when unlocking the lock group (23) with the key, slide
The locking piece (91) of (9) hides from the surface of the handle shaft (8),
On the contrary, the guide projection (92) projects on the peripheral surface of the handle shaft (8).

Therefore, the handle (14) together with the lock body (13) has the locking piece (21).
When pushed to the side, only the guide protrusion (92) of the slide (9) comes out of the height (hs) of the protrusion (30), and the slide (9)
Is no longer locked to the S side of the cylinder (2) and the handle shaft (8) can be rotated as desired. As a result, the locking piece (21) can be separated from the box (27) or can be connected to the box to open and close the door (26).

However, it goes without saying that the handle shaft (8) cannot be rotated unless the lock body (13) is pressed together with the handle (14) toward the locking piece (21). This is because the slide guide projection (92) is fitted into the locking groove (22A) when the lock body (13) is not pressed to the locking piece (21) side.

Further, when the handle shaft (8) is rotated in the opening / closing direction of the door (26), the guide protrusion (92) of the slide is the cylinder.
(2) It corresponds to the locking groove (24A) on the inner surface. Therefore, open the door (26) and release the handle (14),
When (13) is returned to its original position by the spring (10), the guide protrusion (92) of the slide (9) is fitted into the locking groove (24A) and cannot move, so the handle (14) Can not operate arbitrarily.

(Embodiment) An embodiment of the door handle assembly for a switchboard according to the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the door handle assembly according to the present invention includes a handle (14), a lock body (13), a handle shaft (8), a locking piece assembly (5) (20) (21) (15), It is composed of a coupling (3) and a cap ring (1).

The handle (14) and the lock body (13) are fixed to each other and can rotate at the same time. Lock body (13) and handle shaft
(8) is integrally formed, and the locking piece assembly is coupled to the handle shaft (8) by the coupling (3). As can be seen from the drawing, the coupling (3) and the locking piece assembly have holes (3 ') drilled around the coupling.
And a hole (28) for the pin (4) and the axial bolt (5).

At the time of assembly, the cap ring (1) is fitted onto the coupling (3) and then the axial bolt (5) is firmly fixed onto the cylinder (2) of the cap ring (1) by the fixing nut (15). At this time, the cap ring cylinder (2) and fixing nut (15)
It is desirable to interpose a washer (16) between them. By doing so, the locking piece assembly can be smoothly rotated.

FIG. 2 is a cross-sectional view showing a state where the door handle assembly for a switchboard of the present invention is attached to the switchboard. That is, the handle assembly is installed and fixed to the door (26) of the box (27) by the coupling (1) and the binding nut (25).

The locking piece (21) is appropriately fixed to the shaft bolt (5) with the nut (20). A lock group (23) is provided in the lock body (13), and a connecting rod (18) is fixed to the tip of the lock group, and when the lock group is rotated, the connecting rod (18) rotates together. It is supposed to do. An eccentric shaft (19) is formed at the tip of the connecting rod (18).

The front end of the handle shaft (8) of the lock body and the rear end of the coupling (3) are connected by the connecting pin (7), but both ends of the connecting pin (7) are connected after the coupling (3). It reciprocates within a long hole (6) formed in the longitudinal direction of the coupling around the end portion for a fixed distance.

In addition, a hole is provided around the front end of the lock group (13) (handle shaft (8)) with a certain interval to insert the slide (9) around the lock group in a direction perpendicular to the length direction of the lock group. Is perforated and the slide (9) slides in the hole.

Appropriate steps and locks on the inner surface of the cap ring (1) (13)
A spring (10) is provided between them to urge the lock group (13) toward the handle (14).

A groove is formed at the center of the slide (9), and the eccentric shaft (19) of the connecting rod (18) is engaged with the groove to push the slide in a desired direction. That is, when the connecting rod is rotated by the lock group (23), the eccentric shaft (19) moves eccentrically, so that the connecting rod is moved.
The direction of movement of the slide (9) is changed to the left side or the right side each time the right and left of (18) is rotated 180 degrees, and the end portion projects from the handle shaft (8).

Slide on the inner surface of the cylinder (2) of the cap ring (1)
A groove of suitable shape is recessed for cooperating with the end of (9).

That is, when the lock group (23) is locked (see FIG. 2), one end (91) of the slide (9) engages with the groove (22A-1) on the inner surface of the cylinder (2), The handle (14) cannot rotate regardless of whether the lock group (13) is pushed toward the locking piece (21) or the lock group is moved outward by the spring (10).

However, if the lock group (23) is unlocked by the key,
When the lock body (13) is biased toward the leaf (14) by the spring (10), the lock body (13) together with the handle (14).
Can not be rotated, but the lock body (13)
The lock body (13) can be rotated by pushing it toward the (21) side, sliding the slide (9) over the S surface of the cylinder (2) and rotating the handle.

This will be described in detail with reference to FIG.

Protrusions (30) and (31) are formed on the inner surface of the cylinder (2), which are symmetrical with respect to the radial line of the cylinder (2). That is, one locking groove (22A), (22A-1) is formed at each of two positions 180 degrees opposite to each other on the inner surface of the cylinder (2), and these locking grooves (22A) and (22A-1) are formed. The protrusion (30) is formed on one side and the protrusion (31) is formed on the other side. Further, a locking groove (24A) is formed in the protruding portion (30) at an appropriate distance from the locking groove (22A).

The length (1) of the slide (9) corresponds to the locking groove (22A) of the cylinder (2).
It must be shorter than the distance (28) from the center of the to the center of the locking groove (22A-1) on the opposite side by the thickness (wp) of the protrusions (30) and (31).

A groove (93) is provided at the center of the slide (9), and an eccentric shaft (19) is engaged with the groove (93). The slide (9)
The guide projection (92) is fitted into the locking groove (22A) or the locking piece (91) is fitted into the locking groove (22A-1) during operation. At this time, the thickness (Ws) of the slide (9) must correspond to the width (WR) of the groove (22A) in order to insert the locking piece (91) and the guide protrusion (92). I won't.

Since the bottom surface of the guide protrusion (92) of the slide (9) is formed in a step shape by removing the thickness (h / 2), the height (h) of the slide (9) and the protruding portion (30). When the lock body (13) is pushed to the locking piece (21) side, the height (hs) of only the guide protrusion (92) is out of the height of the protrusion (30), and the slide (9) Guide protrusions (92)
Are guided along the upper surface (S) of the protrusion (30).

FIG. 5 is a sectional view showing another embodiment of the door handle assembly of the present invention. As shown in the drawings, in this embodiment, the spring (10) is interposed between the rear end of the coupling (3) and the lock body (13). Provide a locking step between the cap ring (1) and the lock body (13) so that the relative rotational movement between the lock body (13) and the cap ring (1) operates only to the extent necessary for opening and closing the handle. Is desirable. Alternatively, a locking step may be provided between the tip of the coupling and the tip of the cap ring (1).

In other words, there is also an effect that the locking piece (21) is elastically supported around the box (27) when the door is closed by the tension of the spring (10) according to the present invention.

Of course, the handle to open the door is not shown.
When pressing (14), the lock body (13) advances toward the locking piece side so that the locking piece separates from the periphery of the box body, so that the locking piece more easily disengages from the periphery of the box body. It is also obvious that you can do it.

(Effects of the Invention) According to the door handle assembly for a switchboard according to the present invention, it is possible to open and close the door of the switchboard box accurately and appropriately, and to eliminate the danger and improve the safety. In addition, the service life of the door handle assembly can be extended, which is very economical.

[Brief description of drawings]

1 is an exploded perspective view of a switchgear door handle assembly according to the present invention, FIG. 2 is a sectional view of a switchgear door handle assembly according to the present invention, and FIG. 3 is a door handle assembly according to the present invention. The main perspective view of the inner surface of the cap ring cylinder and the slide showing the coupling relationship between the slide provided on the handle shaft and the protrusion formed on the inner surface of the cap ring cylinder, and FIG. 4 shows the rotation of the door handle assembly of FIG. Sectional view showing a state when the lock body is pressed in order to
FIG. 5 is a sectional view of another embodiment of the door handle assembly according to the present invention, and FIG. 6 is a sectional view of yet another embodiment of the door handle assembly of the present invention. 2 ... Cylinder, 3 ... Coupling locking piece, 5, 15, 20, 21 ... Locking piece assembly, 8 ... Handle shaft, 9 ... Slide, 10 ... Spring, 13 ... Lock body, 14 ... Handle 18 ... Connection Rod, 23 ... Lock group, 30, 31 ... Projection portion, 91 ... Locking piece, 92 ... Guide protrusion.

Claims (7)

[Claims] 1. A lock body (13), a handle (14) fixed to the lock body and rotating together with the lock body, a handle shaft (8) integrated with the lock body, a locking piece assembly (5) (20). ) (15) (21), Coupling (3) for fixing the locking piece assembly to the tip side of the handle shaft so that it rotates with the handle shaft, lock and unlock with the key in the lock body (13) The lock group (23) provided so that the cap ring (1) with the cylinder (2) surrounding the lock shaft (8) to rotate the handle shaft (8) together with the lock body and the lock body (13) are pressed from the outside. In normal condition, handle from cap ring (1) to handle (14)
A spring (10) that elastically biases the lock so that it projects outward a certain distance, a connecting rod (18) connected to the lock group so that it can rotate with the lock group within the lock body, and a rotation of the connecting rod. At a certain rotational position of the connecting rod, the guide rod (92) is formed so as to project outward in the radial direction from a certain point around the handle shaft, which corresponds to the certain rotational position of the connecting rod. When it protrudes outward in the radial direction at another point on the opposite side 180 degrees away from the slide (9) forming the locking piece (91), and the cylinder (2) of the cap ring (1). The slide locking piece (91) formed on the inner surface is the handle shaft.
When protruding from (8), enter the engaging groove (22A-1) formed on the outside of the engaging piece (91), bite, and handle
Regardless of whether (14) is projected outward by a certain distance by the spring (10) or is pushed to the opposite side by an external force, the handle shaft (8) is always prevented from rotating, while the slide When the guide projection (9) of (9) is projected from the handle shaft, the lock body (13) is the locking piece assembly.
(5) (15) (20) (21) are pushed inward to guide the guide protrusion (92) so that the handle (14) can be rotated in the opening / closing direction, and the lock body
If the handle (13) is pushed by the spring (10) and the handle protrudes outward, the protrusions (30) (24) forming the locking grooves (22A) (24A) that fix the guide protrusion (92) in the open / closed position. A door handle assembly for a switchboard constructed in 31). 2. A locking piece, wherein the slide (9) projects outward from positions around the handle shaft which are 180 degrees apart from each other.
Forming the guide protrusion (92) with the (91) means that the connecting rod (18) is formed.
2. A door handle assembly for a switchboard according to claim 1, wherein the door handle assembly is formed by an eccentric shaft (19) formed at the end of the slide and a groove formed at the center of the slide. 3. The door handle for a switchboard according to claim 1, wherein the coupling (3) is configured so that the relative positions of the handle shaft and the locking piece assembly cannot be displaced. Assembly. 4. The coupling (3) is the lock body (13).
Is configured to increase or decrease the relative distance between the handle shaft and the locking piece assembly depending on whether the spring is projected by the spring as described above or, conversely, is pressed by an external force. The door handle assembly for a switchboard according to claim 1, which has been manufactured. 5. The door handle assembly for a switchboard according to claim 1, wherein the spring is provided between the lock body and the coupling. 6. The fixing nut (15) of the locking piece assembly (5) (20) (21) (15) is connected to a shaft bolt (5) to connect the coupling (3) and the shaft bolt (5). When coupled, it prevents the fixing pin (4) from coming off and protects the coupling (3) -shaft bolt (5) connection, as well as the coupling (3) and the coupling cylinder (2).
The door handle assembly for a switchboard according to claim 1, wherein the door handle assembly is supported by the door handle assembly. 7. The door handle assembly for a switchboard according to claim 1, wherein the spring (10) is provided between the inner surface of the coupling (3) and the tip of the handle shaft (8).