ES2212690B1 - HOLDING PART OF THE FRONT TO THE BOX IN EMBUTIR LOCKS. - Google Patents

Abstract

Clamping piece from the front to the box in mortise locks, which has a front base (5) parallel to the lock front (2) and which, from the upper and lower horizontal edges, the clamping piece (3) forms backward a pair of convergent oblique folds (6) and a pair of horizontal blades (7) mutually attached and equal to each other; the front base (5) has a hole (5a) for the self-tapping screw (4) and width equal to or smaller than the internal one of the lock box (1); the oblique folds (6) have width equal to that of the front base (5), and the blades (7) are of equal or smaller width inside the lock box (1), and determine a longitudinal frustoconical hole (8) ) converging backwards collaterally forming hooks (9) directed towards the lock front (2), the frustoconical hole (8) is aligned with said hole (5a) of the front base (5); The hooks (9) have a length slightly less than the horizontal measure between windows (10) existing in the side covers (1a) of the lock box (1).

Description

Clamping piece in front of the box in mortise locks.

Field of the Invention

This invention relates to a piece for the front fastening to the lock case in locks inlay of which this lock box is constituted by two side covers that, once coupled to each other, are linked with respect to the lock front by means of a couple of pieces of fastener that have means for assembly with said covers lateral and for a clamping screw applied through said lock front

Prior art

The clamping parts currently used in This field is obtained by costly procedures of mechanization and casting.

A known configuration in this regard consists of in a kind of solid taco that on two opposite sides has two outgoing that are installed in corresponding windows practiced on the side covers of the lock box; in longitudinal direction from front to back this solid piece has a threaded hole for a screw arranged through the cover of a lock front that will have the design, finish and color selected in each case.

This fastening means does not provide elements that ensure a tight and reliable assembly. Clear example of that what  constitutes the fact that the last operation of the same consists in a blow as a rivet to prevent them from occurring gaps between the cover and the lock case, by the tapping and vibrations typical of the use of the lock.

Explanation of the invention and advantages

In the face of this state of affairs this invention advocates a conceptually different clamping piece in terms of having a metallic laminar constitution obtained by stamping and that, taking the lock front as front reference and in relation to your work position in a vertical lock, this clamp has a base front that is parallel to the lock front and that, from the upper and lower horizontal edges of this front base, said fastener forms a convergent pair backwards oblique bends and a pair of horizontal shovels mutually attached and equal to each other; where, said front base has a hole for said screw and a width somewhat smaller than the internal to the lock box, said oblique bends have a width equal to that of the front base, and said blades are of a width equal to the inside of the lock box, determine between them a longitudinal conical frustoconical hole towards back and collaterally form hooks directed towards said lock front, whose frustoconical hole is aligned with said hole, and whose hooks have a length somewhat less than the horizontal measure of existing windows in these covers side of the lock box, the two hooks of the same side of the terraced blades determine a joint thickness somewhat less than the vertical measurement of said windows, and, on its side internal, these hooks form an oblique wall that from the front back converges towards the shovel itself determining in the mouth and in the bottom of this hook some operational measures that are respectively greater and less than the wall thickness of said side covers of the lock box.

In addition to being constructively simpler and economic than those cited in the state of the art, this piece of fastening now recommended incorporates a series of benefits intended to enable a perfectly adjusted and reliable assembly against the tapping and the vibrations inherent in the normal use of the lock. These new features are outlined below.

First of all when screwing the screw the oblique walls of the hooks impact on the leading edge of the windows pulling from the side covers of the box lock both towards the front of the lock and towards the own clamping piece, that is, also towards the opposite side cover. The obliqueness of the walls allows the compensation of clearances and constructive tolerances conferring rigidity and formal stability and dimensional to the lock box; to which also contributes the good seat that by said traction make the side covers with respect to the longitudinal edges of the blades; this good seat is favored by the decreasing width step that It occurs in oblique folds in front of the hooks.

Second, the small smallest dimension of defined hole diameter between the attached blades, makes the  screw the screw these apart each other in the manner of a expandable block, with which the hooks are pressing against the longitudinal edges of the windows, also stiffening in this direction the assembly of the side covers of the box lock with respect to the clamping piece.

On the other hand, whichever trunk is the Longitudinal hole defined between both blades, has the virtue to ensure that in the progressive mutual separation of these during Screwing the screw will keep the thread coupling at its tip to continue screwing until the end. In addition, a pressure between blades and screw is generated which is enough for (no need for the subsequent hit of riveting today) ensure the mounting position in the normal use of the lock; to which also contributes the great rigidity of union between the hooks and the side covers previously reviewed.

Drawings and references

To better understand the nature of the present invention, in the accompanying drawings we represent a preferred form of industrial realization, which is exemplary merely illustrative and not limiting.

Figure 1 is an exploded view in perspective showing a clamping piece (3) according to the invention, installed in a side cover (1a) of the box lock (1), and with the other side cover (1a), the front of lock (2) and self-tapping screw (4) in their positions mounting relative.

Figure 2 is a perspective of the piece of clamp (3) of figure 1, but viewed from behind.

Figure 3 is an orthogonal projection view of the clamping piece (3), given frontally to the front base (5).

Figure 4 is the corresponding lower floor to figure 3.

Figure 5 is section V-V marked in figure 4.

Figure 6 is an enlargement of detail VI circled in figure 4.

Figure 7 is a cross section of the lock (1-2), where the clamping piece (3) it is placed still without tightening and the screw (4) self-tapping on readiness to be introduced through the lock front (2).

Figure 8 is an enlargement of detail VIII which is circled in figure 7.

Figure 9 is section IX-IX which is indicated in figure 7.

Figure 10 is a representation similar to the Figure 7, but now showing the final assembly.

Figure 11 is an enlargement of detail XI that  appears circled in figure 10.

Figure 12 is a view given from the side right of figure 10 and enlarged and arranged in correspondence with figure 11.

In these figures the following are indicated references:

1.- Lock box

1st.- Lock box side covers (1)

2.- Lock front

3.- Clamping piece

4.- Self tapping screw

5.- Front part base (3)

5th.- Hole (threadable) in front base (5)

6.- Oblique part folds (3)

7.- Part shovels (3)

8.- Trunk conical part hole (3)

9.- Shovel hooks (7)

10.- Side cover window (1st)

11.- Oblique wall of hooks (9)

Exhibition of a preferred embodiment

Regarding the drawings and references above listed, an execution mode is illustrated in the attached drawings preference of the recommended clamping piece (1) of the front of lock (2) to the lock box (1) in locks (1-2) of which, as shown in Figures 1, 7 and 10, the lock box (1) is constituted by two covers lateral (1a) that, once coupled to each other, are linked with respect to the lock front (2) by means of a couple of pieces of fastener (3) having means for assembly with said covers lateral (1a) and for a self-tapping screw (4) of mooring applied through said lock front (2).

This clamping piece (3) responds to the particularity of having a metallic laminar constitution obtained by stamping and that, taking the lock front (2) as front reference and in relation to your work position in a vertical lock (1-2), this clamping piece (3) it has a front base (5) that is parallel to the front of lock (2) and that, from the upper horizontal edges and bottom of this front base (5), said clamping piece (3) form a pair of convergent oblique folds (6) and a pair of horizontal blades (7) mutually attached and equal between yes; wherein, said front base (5) has a hole (5a) for said self-tapping screw (4) and a width somewhat smaller than the inside the lock box (1), said oblique bends (6) have a width equal to that of the front base (5), and said shovels (7) are of a width equal to the inside of the box of lock (1), determine between them a longitudinal hole Conical trunk (8) convergent backwards and collaterally hooks (9) directed towards said lock front (2), whose frustoconical hole (8) is aligned with said hole (5a) of the front base (5), has a default diameter set to of the tip of said self-tapping screw (4), and whose hooks (9) have a length somewhat less than the horizontal measure of two windows (10) existing in said side covers (1a) of the lock box (1), the two hooks (9) of the same side of the attached blades (7) determine a joint thickness somewhat less than the vertical measurement of said windows (10), and, on its side internal, these hooks (9) form an oblique wall (11) that of front back converges towards the shovel itself (7) determining in the mouth and at the bottom of this hook (9) operational measures that are respectively greater and less than the wall thickness of said side covers (1a) of the lock box.

The detailed constitution of the clamping piece (3) is illustrated by figures 2 to 6, both in terms of their  general configuration (figure 2), as to the minted conformation internal (figure 6) of the hooks (9) and the longitudinal hole conical trunk (8), which appears here (figures 4 and 5).

The functionality of the clamping piece (3) is illustrates clearly using figures 7 to 12 and the figure itself 1. The clamping piece (3) is easily assembled simply by inserting the hooks (9) through the windows (10), as indicated in Figures 7 to 9. Next, the lock front (2) and through it the screw (4) is threaded self-tapping, which pulls the clamping piece (3) moving it against the lock front (2) until you take the mounting position shown in figures 10 to 12, where oblique walls (11) of the hooks (9) carries the side covers (1a) against (figure 15) the lock front (2) and against the longitudinal sides of the blades (7) of the piece of clamping (3); at the same time, these blades (7) are forced to separating by making (figure 12) the hooks (9) press laterally against the longitudinal edges of the windows (10)

The self-tapping screw (4) when inserted into the clamping piece (3) and screw the hole (5a) and the hole Conical trunk (8) convergent backwards; causes translation of the clamping piece (3) until it stops against the back of the front (2) and simultaneously the oblique walls (11) of the hooks (9) hold and close the side covers against each other (1st).

Claims (3)

1. Clamping piece in front of the box in mortise locks, of the locks (1-2) in which the lock box (1) is constituted by two side covers (1a) which, once coupled together, they are linked with respect to the lock front (2) by a pair of fastening parts (3) that have means for assembly with said side covers (1a) and for a mooring screw (4) applied through said lock front (2), characterized the bracket (3) according to the invention having a laminar constitution obtained metal by stamping and taking the front lock (2) as front reference and relative to its working position in a lock (1-2) vertical, this clamping piece (3) has a front base (5) that is parallel to the lock front (2) and which, from the upper and lower horizontal edges of this front base (5) , said clamping piece (3) forms a pair of co nvergent oblique folds (6) and a pair of horizontal blades (7) mutually attached and equal to each other; wherein, said front base (5) has a hole (5a) for said self-tapping screw (4) and a width equal to or smaller than the internal one of the lock box (1), said oblique bends (6) have an equal width to that of the front base (5), and said blades (7) are of a width equal to or less than the interior of the lock box (1), determine between them a longitudinal conical orifice (8) convergent backwards and collaterally hooks (9) directed towards said lock front (2),
whose frustoconical hole (8) is aligned with said hole (5a) of the front base (5) and whose hooks (9) have a length somewhat less than the horizontal measure of two windows (10) existing in said side covers (1a) of the lock box (1), the two hooks (9) of the same side of the attached blades (7) determine a joint thickness somewhat smaller than the vertical measurement of said windows (10), and, on its internal side, These hooks (9) form an oblique wall (11) that converges towards the shovel itself (7), determining in the mouth and at the bottom of this hook (9) operational measures that are respectively greater and less than the thickness wall of said side covers (1a) of the lock box. 2. Clamping piece in front of the box in mortise locks, according to the preceding claim, characterized in that the self-tapping screw (4) when inserted into the clamping piece (3) and tapping the hole (5a) and the hole Conical trunk (8) convergent backwards; It causes the clamping piece to be translated (3) until it stops with the back of the front (2) and simultaneously the oblique walls (11) of the hooks (9) hold and close the side covers (1a) against each other. 3. Clamping piece from the front to the box in mortise locks, according to the preceding claims, characterized in that with the threading of the self-tapping screw (4), the blades (7) are forced to separate causing the hooks (9) press laterally against the longitudinal edges of the windows (10).