JPS6355239B2 - - Google Patents

Description

Detailed Description of the Invention [Industrial Application Field] The present invention provides a frame having a front opening, a removable panel for closing the front opening, an engaging portion that engages with the frame, and an engaging portion that engages with the panel. The present invention relates to a drawer for an electrical cabinet having a movable element including an engaging grip and a locking mechanism for securing and removing the panel from the frame.

[Conventional technology and its problems]

An electrical cabinet drawer has a sturdy frame with one or more front openings to support the electrical circuitry, one or more removable panels, and a handle to facilitate loading and unloading the drawer into the cabinet. It usually includes.

The panel is a member for closing the front opening of the drawer and, in some cases, serves the function of supporting another electrical circuit.

In conventional drawers for electrical cabinets, the panels are screwed to the frame so that the panels can be removed when the electrical circuitry supported by the frame or panels needs to be accessed for repair or other purposes. . Although this type of panel mounting method allows the use of inexpensive members such as screws, it is time-consuming to install and remove the panels.
This is especially the case when multiple smaller panels are attached to the frame rather than just one large panel. Furthermore, when panels must be removed for purposes such as inspecting electrical circuits, there are electrical connections between the panels and those electrical circuits.
Additionally, if electrical connections must remain energized, the panel should be positioned to facilitate handling of the electrical circuits while avoiding damage to the electrical connections and circuitry. Difficult to hold.

Another known drawer for electrical cabinets includes a hinge having a first element fixed to the frame and a second element fixed to the panel;
A combination of actions with the lock connects the panel to the frame. When it becomes necessary to access the electrical circuitry supported by the panel and/or frame, the lock is removed and the panel is rotated about the hinge. This structure consists of several small panels and is not suitable for drawers where electrical circuits are difficult to access.

[Purpose of the invention]

The first object of the present invention is to have a mechanism for locking a panel to a frame, to easily lock one panel or several small panels without changing the structure of the frame. The objective is to provide an inexpensive drawer that can be used.

A second object of the present invention is to enable easy access to electrical circuits, facilitate the installation and removal of panels from and to the frame, and ensure stable connection of the panel and frame when in use. To provide a drawer having a mechanism for locking and unlocking the panel.

Another object of the invention is to provide a drawer with a mechanism that facilitates access to the electrical circuitry when the panel is removed from the frame.

[Summary of the invention]

These and other objects provide that the frame is formed with a groove for engagement by the engaging portion of the movable element to permit pivoting; operating means cooperating with the movable element and the frame to pivot the movable element relative to the frame, the operating means bringing the engagement portion into contact with the panel to secure the panel to the frame; In order to separate the engaging part from the panel in order to remove it from the panel,
This is accomplished by including a movable member that controls the pivoting movement.

According to another feature of the invention, the drawer comprises a chimney, the chimney comprising a first chimney element connected to the frame and a second chimney element connected to the panel. including, 2
The coupling elements are separated during normal use of the electrical cabinet and are attached to each other after the panel is removed from the frame to provide temporary support and enable pivoting of the panel. configured to be concatenated.

〔Example〕

Hereinafter, the present invention will be explained in detail with reference to the drawings.

First, referring to FIGS. 1 to 4, the drawer of the present invention includes an outer frame 1 made of a single steel plate bent into a U shape, and an inner frame including four rods fixed to the outer frame 1. It is equipped with 2. A cross member 3 as a support member is attached to the inner frame 2 by means of a connecting member. The coupling member is constituted by an open eyelet delimited by a projecting wall so as to be elastically deformable. The crosspiece 3 provides support and guidance for the printed circuit card 4. One printed circuit card 4 is illustrated in dashed lines in FIG. The connection of the crosspiece 3 to the inner frame 2 is carried out by pushing the crosspiece 3 from the inside towards the outside of the frame 2, in a direction perpendicular to the rod, until the rod enters the eyelet of the crosspiece 3. Each printed circuit card 4 is removably supported by two opposing cross members 3.

Two parts 5, 6, hereinafter referred to as "handle blocks", are fixed to the outer frame 1 by screws screwed into screw holes 7, 8 (FIG. 8).

This drawer is provided with a removable panel 9 of approximately rectangular outline. This panel 9 has two horizontal cross members 10,11. These horizontal cross members 10, 11 constitute the movable elements of the locking mechanism for locking the panel 9 to the outer frame 1.

The horizontal cross members 10, 11 are made by processing a steel plate and have a base 12, as shown in FIGS. 5-7.
By making a cut in this base 12 and performing a bending process, a protrusion 1 perpendicular to the base 12 is formed.
3 and 14 are formed at both ends. horizontal cross member 10,
Reference numeral 11 indicates protruding portions 13 and 14 approximately perpendicular to the base 12.
It also has a plate-shaped portion bent in the opposite direction. This plate is shaped so as to obtain a groove 15 which engages the panel 9 on the one hand and the handle blocks 5, 6 on the other hand in order to fix the panel 9 to the outer frame 1.

As shown in FIGS. 2-4 and 8, each handle block 5, 6 is obtained as a single piece by pressure die-casting and has a handle 16, 16' on the front surface to facilitate the operation of inserting and removing the drawer. parts 17, 17', and a back part 20. The front parts 17, 17' have slots 1 for passing screws for fixing the drawer to the cabinet.
8, 19, 18', 19' are formed. The protruding portions 1 of the horizontal cross members 10 and 11 are provided on the back surface 20.
A screw hole (not shown) is provided for screwing in a screw 21, 22 cooperating with 3, 14. Back part 2
0 is formed with a seat 23 for receiving the coil spring 24, a recess 25 for receiving the protrusions 13 and 14 of the horizontal cross members 10 and 11, and a groove 26 that forms a horizontal fulcrum for instantaneous turning of the horizontal cross members 10 and 11. (8th,
Figure 9). The horizontal cross members 10, 11 are supported by the handle blocks 5, 6 via coil springs 24 and grooves 26. The groove 26 cooperates with the base 12 of each horizontal crosspiece 10,11. The axial positioning of the horizontal crosspieces 10, 11 takes place by means of reference parts 27, 27' of the handle blocks 5, 6.

Handle 16, 1 of each handle block 5, 6
6' functions as a fixing part for the cylindrical pair. The movable parts of this pair are two pairs of elastic members 31, 31' and 32 fixed to the panel 9,
32' (Fig. 16).

The movable parts of the pair (FIGS. 14-16) are constructed on a base support 28. Two inserts 29, 30 are protruded from one side of the base support 28, and elastic members 31, 31'
and 32, 32' protrude to the other surface side.
Utilizing their elasticity, these elastic members can be assembled to grip the handles 16, 16' to form a pair, and can be easily removed. The handle 16, 16' has two reference surfaces 33, 34 near its ends. These reference surfaces cooperate with the outer surfaces of the resilient members 31, 31', 32, 32' to prevent longitudinal sliding of the pair.

The movable parts of the pair are fixed to the panel 9 by a combination of adhesive and the action of the two inserts 29,30. The inserts 29, 30 are inserted with an interference fit into suitable seats in the panel 9 to ensure that the movable parts are secured to the panel 9 even if the adhesive fails.

The resilient members 31, 31', 32, 32' form an open eyelet defined by two resilient walls. The connection between the fixed part and the movable part of the pair is as follows:
Move the movable part fixed to the panel 9 until the handle 16 or 16' of the handle block 5, 6 enters the open eyelet formed between the elastic members 31, 31', 32, 32'. This is done by pushing in a direction perpendicular to the

The operation of the mechanism for locking the panel 9 to the frame 1 is shown in FIGS. 9-13. Each of these figures shows details of the upper part of the handle block 5. Although not shown, the lower portion of the handle block 5 is of similar construction to the upper portion, as can be seen in FIGS. 3, 8 and 16.

When the panel 9 is not fixed to the outer frame 1, the screws 22 are in a loosened state and the horizontal crosspiece 10 is in the position shown in dashed lines in FIG. 9, in FIGS. 11 and 13.

When fixing the panel 9 to the outer frame 1,
First, the panel 9 is brought close to the outer frame 1 and the screws 21, 22 (these are loosened) are screwed in so that the tips of these screws are in the horizontal cross member 1.
The horizontal cross members 10, 11 are moved against the spring force of the coil spring 24 by contacting the protrusion 13 of the
The panel 9 is fixed by the groove 15 (solid line position in FIG. 9, FIGS. 10 and 12) by pivoting about a horizontal fulcrum constituted by the groove 26.

In the rest state, the horizontal cross members 10, 11 are not fixed to the outer frame 1, but are only supported by it. During the fixing operation of the panel 9, the horizontal cross members 10, 11 are fixed to the outer frame 1 by tightening the screws 21, 22. Therefore, in order to fix the panel 9 to the outer frame 1 or to remove it from the outer frame 1, it is only necessary to loosen the screws 21, 22 without removing them from their respective seats. In this way, the work of attaching and detaching the panel 9 to the outer frame 1 can be done quickly. The advantages of this drawer are even greater if, instead of one panel, several small panels are used in this drawer. In fact, no matter how many small panels there are, screws 21,
All you have to do is operate 22. Additionally, if several counterpanes are used, the locking mechanism ensures perfect alignment of the mechanisms and prevents dust from entering the drawer.

One variation of the locking mechanism described above uses one horizontal cross member, with a locking groove formed in the outer frame in which the lower edge of the panel can be accommodated, in the second cross member. It is to use it instead. With such a structure, the cost of this mechanism can be reduced, and since the number of screws to be turned is halved, the time for fixing the panel can also be significantly shortened. If the electrical cabinet is provided with a plurality of drawers with panels, or if the drawers are provided with a plurality of small panels side by side, the above-mentioned couplings are attached to each vertical edge of the panel. When the need arises to access the electrical circuitry, these panels can be temporarily attached to any handle on the cabinet to provide greater access to the electrical circuitry.

Another embodiment of a cabinet having one or more drawers has a handle that is secured to the panel and a fixture that is secured to the support structure of the cabinet. Its fixation can be obtained by a single vertical cylindrical rod defining a horizontal reference plane. In this case, the drawer panel can be mounted in tandem with the handle or rod of another panel.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a drawer for an electric cabinet according to an embodiment of the present invention, Fig. 2 is an enlarged view showing a main part of Fig. 1 with a part cut away, and Fig. 3 is a front view of the drawer. Fig. 4 is an enlarged view of the main part of Fig. 3, Fig. 5 is a front view of the movable element of the locking mechanism for fixing the panel to the drawer frame, and Fig. 6 is an enlarged view of the main part of Fig. 3.
FIG. 7 is a perspective view of the movable element; FIG. 8 is a side view of the handle and components of the locking mechanism; FIG. 9 explains the operation of the locking mechanism. 10 and 11 are taken along the Y-Y line in FIG. 4 to explain the operation of the locking mechanism related to FIG. 9. FIG. 12 is a sectional view showing different states along the
13 is a sectional view showing a different state taken along the Z-Z line of FIG. 4 in order to explain the operation of the locking mechanism related to FIG. 9, and FIG. Figure 15 is a front view of the primary pair element in Figure 14, and Figure 16 is a side view of the secondary pair element in Figure 14.
The figure is a perspective view of the same mating element. 1... Outer frame, 5, 6... Handle block, 9... Panel, 10, 11... Horizontal cross member,
12...Substrate part, 13, 14...Protrusion part, 15...
...Groove, 16, 16'...Handle, 21, 2
2...Screw, 24...Coil spring, 26...Groove,
28...Base support, 31, 31', 32,
32'...Elastic member.

Claims (1)

[Scope of Claims] 1. A movable element including a frame having a front opening, a removable panel for closing the front opening, an engaging part that engages with the frame, and a grip part that engages with the panel. and a locking mechanism for fixing the panel to the frame and detaching the panel from the frame, wherein the frame 1 is provided with an engaging portion 12 of the movable elements 10, 11. A groove 26 is formed such that the movable elements 10, 11 are engaged with each other to allow a pivot movement, and the groove 26 and the engaging portion 12 are engaged and the movable elements 10, 11 are pivoted relative to the frame 1. an operating means is provided which cooperates with the movable elements 10, 11 and the frame 1 to bring the engaging portion 12 into contact with the panel 9 to bring the panel 9 into the frame 1. For an electrical cabinet, comprising a movable member 22 for controlling the pivot movement in order to fix the panel 9 and to disengage the engaging portion 15 from the panel 9 in order to remove the panel 9 from the frame 1. drawer. 2. Said panel is approximately rectangular and the movable element of said locking mechanism is constituted by horizontal cross members 10, 11, which horizontal cross members have groove-shaped grooves for gripping the corresponding edges of said panel 9. 1 portion 15, a second portion 12 having a side surface that engages with the groove 26, and reference surfaces 13, 14, the second portion 1
2 forms an arm for controlling the substantially vertical movement of the first part 15 relative to the panel 9, and a movable member 22 of the control means cooperates with the reference planes 13, 14 to control the pivoting movement. A drawer according to claim 1, characterized in that the drawer is operative. 3. The operating means comprises an elastic member 24 that applies a thrust action to the horizontal cross member in order to maintain cooperation between the side surface of the second portion 12 and the groove 26. The drawer described in item 1 or 2. 4 The elastic member is adapted to move the horizontal cross member 1 so as to separate the first portion 15 from the edge of the panel 9.
a spring 24 disposed between said frame 1, 5, 6 and said second part 12 for applying a force to said second part 12 causing an opening movement as a substantially pivoting movement at zero; A drawer according to claim 2 or 3. 5 The movable member of the operating means is the first portion 1
The springs 2
A thrust stronger than the action of 4 is applied to the reference surface 13,
14, further comprising a screw 22 movable relative to the frame for effecting a substantially pivot-like closing movement of the horizontal crosspiece 10. Drawer mentioned. 6. The frames 1, 5, 6 form a second groove for enabling pivot movement, and the locking mechanism has a second side surface connected to the second groove. A second horizontal cross member 10 similar to the horizontal cross member 10 of 1
The elastic member is provided with a horizontal cross member 11 of
A force is applied to the second horizontal cross member 1 to control a generally pivoting opening movement of the second horizontal cross member 11 to separate the first portion from the edge of the panel 9.
1 and a second spring provided between said frame 1 and said second part for applying said first part to an edge of said panel. In order to make the frame 1
5, 6, applying a thrust to the reference plane of the second horizontal cross member 11 that counteracts the action of the second spring, causing the second horizontal cross member 11 to undergo a substantially pivot-like closing movement. The frame 1,
A second screw 21 that can move relative to 5, 6
A drawer according to claim 5, characterized in that the drawer comprises: 7 at least one coupling means attached to said frame and a second coupling means attached to said panel;
and, when the electrical cabinet is in normal operation, two different coupling elements 16, 16', 31,
31', 32, and 32' are configured to be separated and connected to each other after the panel 9 is separated from the frame 1 in order to provide temporary support and rotation of the panel 9. 7. A drawer according to any one of claims 1 to 6, characterized in that: 8. A patent claim comprising a plurality of handles for facilitating putting in and taking out the drawer, and wherein the at least one coupling element is constituted by one of the handles 16, 16'. The drawer described in item 7 within the scope of . 9 The second coupling element is the panel 9
at least one base element 28 fixed to;
resilient side walls 31, 31', 32, 32' connected to this base element 28, said resilient side walls 31, 31', 32, 32' forming an eyelet opening and said 1 new pair element 1
A drawer according to claim 7 or 8, characterized in that the drawer is configured to grip 6, 16'. 10 The handles 5, 6 are substantially cylindrical portions 1
6,16', this cylindrical part 16,1
6' forms said first coupling element, and said handles 5, 6 have base parts 33, 34 providing a stopping reference surface for said second coupling elements 28-32, 28'-32'. A drawer according to claim 8 or 9, characterized in that the drawer is formed of a drawer. 11 that said base element 28 is fixed to said panel 9 by adhesive and has inserts 29, 30, said panel 9 forming a seat connected to said inserts 29, 30 by an interference fit; A drawer according to claim 9 or 10. 12 comprises two blocks 5, 6 connected to said frame 1, said handles 16, 16' being obtained in said blocks 5, 6, said blocks having seats 23 for said two springs and , a seat 26 for the horizontal crosspieces 10, 11, and an element 7 for connecting the blocks 5, 6 to the frame 1 and for connecting the drawer to the cabinet.
8, 18, 19, and the two screws 2
A drawer according to claim 6 or 8, characterized in that 1 and 22 are removably screwed into said blocks 5 and 6. 13. A drawer according to claim 12, characterized in that each block (5, 6) is constructed as a single piece by pressure die casting.