JP4741349B2 - Latch guide in lock - Google Patents

Description

  The present invention relates to a latch guide in a lock, and more particularly to a latch guide in a lock provided with an inversion latch. In particular, the present invention is suitable for push-pull locks equipped with an inversion latch among locks.

  In the column of the prior art of Patent Document 1, it is described together with drawings (FIGS. 7 and 8) that a guide frame-shaped latch guide is attached to the front opening of the lock box. The invention described in Patent Document 1 is an improved example of a latch guide having a latch guide tube. The conventional latch guide including the latch guide of this improved example is intended to prevent the latch guide from being easily detached from the front during transportation and to easily attach the latch guide to the opening of the front.

  Patent Document 2 describes a structure of a reversing latch and a latch guide incorporated in a lock box so that the reversing latch can be guided (member 13).

  However, the latch guide described in Patent Document 2 is also intended to guide the reversing latch in the same manner as the guide frame of Patent Document 1, and in other words, when the reversing latch returns (in a self-supporting state), in other words, the door guide. It was not intended to suppress the impact sound generated when the collision surface of the reversing latch collides with the side wall of the latch guide on the lock box side during opening and closing.

Patent Document 3 discloses that a latch lock is fitted to a rectangular inner edge of a through hole (opening) of a front plate (front) of a box-shaped case, and a rectangular frame for latch sliding is made of a silencer synthetic resin. It is to make a product guide frame.
JP 2004-339735 A Japanese Patent Application Laid-Open No. 8-100559 Japanese Utility Model Publication No. 5-67781

  A first object of the present invention is to prevent a shock sound generated by collision with a member having a “latch guide” function at the time of return of an inversion latch (in a self-supporting state) from being propagated and becoming “so-called harsh”. It is. The second purpose is to enhance the silent effect or the damper effect. The third object is to easily attach the latch guide to the inner wall surface of the lock box.

Latch guide the lock of the present invention, in the latch guide in the lock having the inverted latch, the latch guide 5 is a frame-shaped guide member to be fitted into the opening 3 of the front 2 of the lock box 1, framelike The guide members include vertical left and right vertical frame portions 11a and 11a, upper and lower horizontal frame portions 11b and 11b orthogonal to upper and lower ends of the left and right vertical frame portions 11a and 11a, and the left and right vertical frame portions 11a and 11a. Protruding end portions that protrude slightly outward in the upper, lower, left, and right corner portions, and a vertically long gap 15 that is formed between these protruding end portions and that is formed between the protruding end portions and that is opposed to the left and right inner wall surfaces 3a and 3b of the opening 3 A horizontal recess 14 and engaging protrusions 12 and 12 formed on the upper and lower horizontal frame portions 11b and 11b, and fixed to the back side of the front 2 of the lock box 1 via the engaging protrusion. are things And features.

The latch guide for the lock according to the present invention is a latch guide for the lock provided with an inversion latch, and the latch guide is attached to the case body of the lock box 1 and the front side inner wall surface of the case lid in a facing state. a pair of support members 21, 21A to be fixed, these supporting members 21, 21A, the cut portion 25 for forming a space for silencing effect against the front side inner wall surface is formed, they Each of the cutout portions 25 is an inverted U-shaped or U-shaped cutout, and at each end of the upper and lower guide arm portions 21b and 21b of the support members 21 and 21A, an engaged portion of the lock box 1 is provided. A mounting portion 26 is provided so as to project into the head 22 .

Furthermore, the latch guide in the lock according to the present invention is a latch guide in the lock having a reversing latch, and the one latch guide 5 is a frame-shaped guide member fitted into the opening 3 of the front 2 of the lock box 1. The frame-shaped guide member includes vertical left and right vertical frame portions 11a and 11a, upper and lower horizontal frame portions 11b and 11b orthogonal to upper and lower ends of the left and right vertical frame portions 11a and 11a, and the left and right vertical frame portions. 11a, 11a projecting end portions slightly projecting outward in the upper, lower, left and right corners, and between the projecting end portions and for the left and right opposing inner wall surfaces 3a, 3b of the opening 3 for a silent effect It is composed of a lateral recess 14 having a vertically long gap 15 and engagement protrusions 12 and 12 formed on the upper and lower horizontal frame portions 11b and 11b, and is attached and fixed to the back side of the front 2 of the lock box 1. , And Another latch guide is a set of support members 21,21A which are additionally provided respectively fixed to opposite state to the front side inner wall surface of the case body and case lid of the lock box 1, these supporting members 21,21A Is characterized in that laterally cutout portions 25, 25 for forming a space for a silent effect on the inner wall surface of the front side are formed.

(1) When a latch guide is attached to the lock box, a silent space (space) is formed between the inner wall surface of the lock box and the side wall of the latch guide. Thus, it is possible to avoid a situation in which the impact sound generated due to the collision of the inversion latch is propagated and becomes “so-called harsh”.
(2) Since the space for the inner wall surface of the lock box is increased, the silent effect or the damper effect can be further enhanced.
(3) When the latch guide 5 has the knob portion 13 and when the latch guides 21 and 21A have the attachment portions 26 that engage with the engaged portions 22 of the wide side walls 1a and 1b of the lock box, The latch guide can be easily attached to the inner wall surface of the lock box.
(4) The invention according to claim 4 can obtain a silent effect on both the front and the wide side wall of the lock box.

  Hereinafter, the best mode (first embodiment) for carrying out the present invention shown in FIGS. 1 to 7 will be described.

(1) Environment for Implementing the Invention FIG. 1 is a schematic explanatory diagram showing the environment for implementing the invention. In each figure, 1 is a lock box, 2 is a front of the lock box 1, 3 is a latch opening formed in the front 2, 4 is a latch, and 5 is a latch guide. Hereinafter, specific requirements of the present invention will be sequentially described, but detailed matters will be omitted from the drawings and the description thereof.

(2) Lock box 1
The lock box 1 includes a case body 1a, a case lid 1b, and a front 2. The case body 1a is formed in a case shape with one opening. The case lid 1b is fixed to the case body 1a so as to close the one side opening via a fixing tool. In FIG. 1, a part of the case body 1a and the case lid 1b is shown, and the remaining parts are omitted.

(3) Front 2
In the present embodiment, the front 2 includes a long plate-like back plate 2a fixed to the front wall of the case body 1a and a front body 2b fixed to the front surface of the back plate 2a. For example, a rectangular latch opening 3 is formed at the center of the front body 2b. Further, as shown in FIG. 3, a total of two engaging protrusions 6 are provided on the back surface of the front main body 2b in the vicinity of the opening 3.

  Thus, a gap portion 7 is set between the upper and lower engaging protrusions 6 and the upper and lower opening edges of the back plate 2a to engage the engaging protrusions 12 described later of the latch guide 5. Therefore, when the opening 3 of the front body 2b is compared with that of the back plate 2a, the opening of the back plate 2a is slightly larger.

  By the way, as shown in FIGS. 1 and 2, the opening 3 has left and right opposing inner wall surfaces 3a and 3b and upper and lower inner wall surfaces 3c and 3d orthogonal to the opposing inner wall surfaces 3a and 3b. In the present embodiment, the left and right opposing inner wall surfaces 3a and 3b are vertical surfaces, but they may be formed in a symmetrical arc shape, and the upper and lower inner wall surfaces 3c and 3d are horizontal surfaces, but are similarly symmetrical. It may be formed in a simple arc shape. Therefore, it is not a limiting requirement of the invention that the opening 3 has a perfect rectangular shape.

(4) Latch 4
In this embodiment, the latch 4 is an inverting latch. The configuration of the inverting latch 4 is described in detail in Patent Document 2 (Japanese Patent Laid-Open No. 8-100559). For example, it is a rhombus-shaped block whose plane shape is almost rhombus, that it is slidably and reversibly mounted in a guide frame fixed to the lock box, and the front half is a guide frame provided on the front It is energized to rotate (reverse) forward and in one direction by compression springs arranged on the rear half side, with the sloped side faces in the front half and the rear half respectively. In other words, the rear half has a plurality of receiving portions that engage with the locking arms constituting the latch locking mechanism. The inversion latch 4 of this embodiment is the same as the inversion latch of the known matter.

Therefore, a detailed description is omitted, and here, a brief description will be given with reference to FIG.
The inversion latch 4 has a plurality of contact surfaces. Here, when closing the door (not shown), the side surface that is in sliding contact with the edge portion 10a of the vertical frame 10 of the door frame is defined as the sliding contact surface 4a. A side surface (a surface parallel to the opposed inner wall surface 3a in FIG. 1) engaged with a strike (not shown) when the is closed is defined as a collision surface (engagement surface) 4b.

  In FIG. 1, when the free end of the door moves in the direction of arrow A (door closing direction), the rolling latch 4 rotates and retreats into the opening 3, and then exceeds the edge portion 10 a of the vertical frame 10. When it is located on the front side indicated by the arrow, it pops out while returning to a predetermined position by the spring force of the latch spring in the lock box, engages with the strike, and at the same time, the collision surface 4b collides with the opposed inner wall surface 3a of the opening. . At this time, generally, a “collision sound” is generated.

  Therefore, when the latch guide (guide frame) 5 is fixedly fitted in the opening 3, when the door is opened and closed, the reversing latch 4 protruding from the opening 3 is naturally in one vertical direction of the latch guide 5. Since it collides with the inner wall surface of the frame portion, the “collision noise” is generated even when the front 2 has the latch guide 5.

(5) Latch guide 5
As shown in FIGS. 1 to 3, the latch guide 5 includes an opening forming frame portion 11 that fits into the opening 3 of the front body 2 b, and a set of protrusions formed above and below the opening forming frame portion 11. And the engaging protrusion 12. The latch guide 5 is preferably formed in a rectangular shape so as to correspond to the shape of the opening 3.

  Therefore, the latch guide 5 of the present embodiment has the left and right vertical frame portions 11a and 11a in the vertical state and the horizontal frame portions 11b and 11b in the horizontal state orthogonal to the upper and lower ends of the left and right vertical frame portions 11a and 11a, respectively. ing. The pair of engaging projections 12 project in a hook shape through a portion 11c connected to the back plate 2a side at a substantially central portion of the horizontal frame portions 11b and 11b (FIG. 3).

(6) Characteristic part of this invention Next, the characteristic part of this invention is demonstrated, for example with reference to FIG. FIG. 2 is a schematic explanatory view seen from the front main body 2b (front) side in a state where the opening forming frame portion 11 is fitted into the opening 3 of the front 2. As shown in FIG. As is apparent from this figure, in the present embodiment, there is a vertically long gap between the left and right opposing inner wall surfaces 3a, 3b forming the opening 3 of the front 2 and the left and right vertical frame portions 11a, 11a of the latch guide 5. There are gaps 15 and 15.

  In addition, when the collision surface 4b of the reversing latch 4 collides with either of the left and right vertical frame portions 11a and 11a by cutting the outer wall surface side of the left and right vertical frame portions 11a and 11a into a vertically long shape, the impact force is increased. Directly transmitted to the left and right opposing inner wall surfaces 3a, 3b of the front 2, and as a result, the impact sound is devised so that it does not propagate to the entire lock box 1 (silent effect or sound propagation suppression effect) FIG. 7).

In other words, the feature of the present invention is that the sound caused by the impact force of the reversing latch 4 is “higher” and is provided between the inner surface of the opening 3 and the frame portion of the guide frame 5. In addition, a plurality of gaps 15 are used to suppress the “impact sound”. As an example, a vertically long recess 14 is formed in each of the left and right vertical frame portions 11 a of the latch guide 5. Therefore, for example, the protruding end portions of the upper and lower horizontal frame portions 11b and 11b of the latch guide 5 protrude slightly outward from the left and right vertical frame portions 11a and 11a (see FIGS. 4 and 5).

(7) Other matters In the example shown in the embodiment of the invention, a pair of left and right extending in the opening direction of the back plate 2a is provided at the center of the rear end surface of the left and right vertical frame portions 11a and 11a of the latch guide 5. The knob portion 13 is provided. When the latch guide 5 is fitted into the opening 3 of the front 2, the use of the knob portion 13 has an advantage that the latch guide 5 can be easily fitted into the opening 3.

  Further, although the engagement protrusion 12 of the latch guide 5 protrudes in a hook shape, the rear side of the hook-like protruding portion is formed in a single step or a plurality of steps in consideration of the mounting problem of the latch guide 5. You may do it. In this embodiment, the form of the engagement protrusion 12 is simply shown for convenience.

  Hereinafter, in this section, a second embodiment of the present invention will be described. The latch guide of the second embodiment is partially the same in the main object of the first embodiment as in the first embodiment, but the configuration is completely different, so that different reference numerals are used for the components. However, the same reference numerals are used for the lock box 1, the front 2, and the latch 5.

The latch guides 21 and 21A of the second embodiment shown in FIGS. 8 to 15 are mainly different from the first embodiment, and are the mounting locations and configurations of the latch guides 21 and 21A with respect to the lock box 1.
First, the attachment location will be described. For example, as shown in FIGS. 8, 9, and 10, a plurality of latch guides (a pair of left and right frame-shaped support members) 21 and 21 </ b> A are opposed to the front side of the inner wall surface of the wide side wall of the lock box 1. It is fixedly attached to.

  Here, referring to FIG. 8, 1a shows a part of the wide side wall of the case body. Therefore, 1b is a part of the case lid. A pair of engaged portions (for example, notch portions) 22 are formed at appropriate positions on the wide side walls 1a and 1b with a predetermined interval in the vertical direction.

  On the other hand, the plurality of latch guides 21 and 21A respectively attached to the inner wall surface of the lock box 1 are a pair of left and right inverted U-shaped frame support members in this embodiment. The support member may have a U-shaped frame shape.

  Referring to FIG. 8, 21 is a latch guide on one side fixed to the inner wall surface of the wide side wall of the case body 1a, and 21A is a latch guide on the other side fixed to the inner wall surface of the wide side wall of the case lid 1b. .

  Since these latch guides 21 and 21A have the same configuration, the same reference numerals are given for convenience of explanation. In FIG. 8, the latch guide 21 </ b> A that is visible in the foreground looks like the latch guide 21 of the case body 1 a turned upside down. In other words, in the drawing, it can be understood that the side where the latch guide 21 is not visible is the same as the side where the latch guide 21A in front is attached.

  Thus, 21a is a connecting portion in the vertical direction, and 21b is a guide arm portion extending in the horizontal direction from the upper and lower ends of the connecting portion 21a. A lateral cutout space portion 24 is provided between the guide arm portions 21b and 21b.

  Further, on the side where the latch guides 21 and 21A are attached (the side to be joined to the inner wall surface of the lock box), a notch portion (horizontal notch, inverted U-shape) formed between the latch guide 21 and 21A and the inner wall surface of the lock box 1 is provided. 25) is provided.

  The notch 25 of the latch guides 21 and 21A is an inverted U-shaped notch in this embodiment. And the U-shaped attachment part 26 which each engages with the to-be-engaged part 22 of the lock box 1 protrudes from each edge part of the upper and lower guide arm parts 21b and 21b. In addition, an unnumbered small protrusion or the like is provided at an appropriate portion of the upper and lower guide arm portions 21b and 21b.

  The latch 4 is positioned in a sandwich between the left and right latch guides 21 and 21A, as shown in FIGS. Therefore, the inclined surface on the rear half side of the latch 4 shown in FIG. 8 collides with one of the latch guides 21 and 21A depending on the attachment mode.

As described above, the latch guide 5 according to the first embodiment of the present invention or the latch guides 21 and 21A according to the second embodiment is attached to the lock box 1 or as shown in FIG. 5 and the left and right latch guides 21 and 21A each having a laterally cutout portion 25 are mounted on the lock box 1 (this will be referred to as “third embodiment” for convenience of explanation), thereby achieving the object of the invention (silent sound). Effect, damper effect) can be achieved even more.

  The present invention is mainly used in the locksmith and joinery industries.

1 to 7 are explanatory views showing the best embodiment (first embodiment) of the present invention. 8 to 14 are explanatory views showing a second embodiment of the present invention. FIG.
The schematic explanatory drawing from the perspective of 1st Example. Schematic explanatory drawing from the front side of the front. The longitudinal cross-sectional schematic explanatory drawing in the case of attaching a latch guide to the front. The front view of a latch guide. The rear view of a latch guide. FIG. 6 is a sectional view taken along line 6-6 in FIG. Schematic explanatory drawing explaining the movement of a latch. Schematic explanatory drawing from the perspective of 2nd Example. The longitudinal cross-sectional schematic explanatory drawing of the principal part. The cross-sectional schematic explanatory drawing of the principal part. Explanatory drawing seen from one side of the latch guide. FIG. 12 is an enlarged sectional view taken along line 12-12 of FIG. Explanatory drawing seen from the other side (attachment side) of a latch guide. Explanatory drawing from the planar view of FIG. (A) and (b) of FIG. 15 is each schematic explanatory drawing of 3rd Example.

DESCRIPTION OF SYMBOLS 1 ... Lock box, 1a ... Case body, 1b ... Case lid, 2 ... Front, 2a ... Back plate, 2b ... Front main body, 6 ... Engagement protrusion, 7 ... Gap part, 3 ... Opening, 3a, 3b ... Left and right Opposite inner wall surfaces, 3c, 3d ... upper and lower inner wall surfaces, 4 ... latch, 4a ... slidable contact surface, 4b ... collision surface, 5 ... latch guide, 10 ... vertical frame, 10a ... edge portion, A ... arrow direction (door closing direction) 11 ... Opening frame portion, 11a, 11a ... Left and right vertical frame portion, 11b, 11b ... Horizontal frame portion, 11c ... Connecting portion, 12 ... engaging protrusion, 13 ... pick portion, 14 ... longitudinal lateral recess, DESCRIPTION OF SYMBOLS 15 ... Long gap, 21 ... Latch guide on one side, 21A ... Latch guide on the other side, 21a ... Connection part, 21b ... Guide arm part, 22 ... Engaged part, 24 ... Space part, 25 ... Notch part, 26 ... Mounting part.

Claims (4)

In the latch guide of the lock provided with the reversing latch, the latch guide 5 is a frame-shaped guide member that is fitted into the opening 3 of the front 2 of the lock box 1, and the frame- shaped guide member is a left-right vertical position in a vertical state. Frame portions 11a and 11a, upper and lower horizontal frame portions 11b and 11b orthogonal to the upper and lower ends of the left and right vertical frame portions 11a and 11a, and slightly upward and downward corner portions of the left and right vertical frame portions 11a and 11a Projecting end portions projecting from each other, a laterally recessed portion 14 formed between these projecting end portions and having a longitudinally long gap 15 for noise reduction with respect to the left and right opposing inner wall surfaces 3a and 3b of the opening 3, and the upper and lower It is composed of engaging projections 12 and 12 formed on the lateral frame portions 11b and 11b, and is fixedly attached to the back side of the front 2 of the lock box 1 via the engaging projections . Latch guide
In the latch guide of the lock provided with an inversion latch, the latch guide is a set of support members 21 and 21A that are fixedly attached to the case body of the lock box 1 and the front side inner wall surface of the case lid, respectively. These support members 21 and 21A are formed with notch portions 25 for forming a space for a silent effect with respect to the front side inner wall surface, and the notch portions 25 are each in an inverted U shape. Alternatively, it is a U-shaped notch, and an attachment portion 26 that is engaged with the engaged portion 22 of the lock box 1 protrudes from each end portion of the upper and lower guide arm portions 21b and 21b of the support members 21 and 21A. A latch guide in a lock characterized by being made .
In the latch guide of the lock provided with the reversing latch, the one latch guide 5 is a frame-shaped guide member fitted into the opening 3 of the front 2 of the lock box 1, and the frame- shaped guide member is in a vertical state. Left and right vertical frame portions 11a and 11a, upper and lower horizontal frame portions 11b and 11b orthogonal to the upper and lower ends of the left and right vertical frame portions 11a and 11a, and the upper and lower vertical frame portions 11a and 11a A projecting end portion projecting outward, and a lateral recess 14 formed between these projecting end portions and having a longitudinal gap 15 for silent effect with respect to the left and right opposing inner wall surfaces 3a, 3b of the opening 3, It is composed of engaging projections 12 and 12 formed on the upper and lower horizontal frame portions 11b and 11b , and is fixedly attached to the back side of the front 2 of the lock box 1 , and another latch guide is a lock box. 1 case body A pair of support members 21 and 21A are attached and fixed to the front side inner wall surface of the case lid in a facing state, respectively, and these support members 21 and 21A have a silent effect with respect to the front side inner wall surface. A latch guide for a lock, characterized in that horizontally long cutout portions (25, 25) for forming a space are formed.
2. The latch guide for a lock according to claim 1, wherein the left and right vertical frame portions 11a and 11a of the latch guide 5 are provided with a pair of knob portions 13 and 13 protruding rearward .

Images