JP2007063857A - Sound restraining lock - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lock of a silent operation sound for suppressing an operation sound by reducing the operation sound by a lock mechanism constituting member generated in response to locking-unlocking operation. <P>SOLUTION: The inside of a lock box 13 is incorporated with at least a potbellied shaft 11 being the lock mechanism constituting member, a dead bolt 15 projecting and retreating from the lock box 13 by following the rotational movement of the potbellied shaft 11 and supporting/fastening members 33, 37, 39 and 45 of a pin and a machine screw. Resin hollow blocks 55A, 55B and 55C formed in the substantially same shape as this space part, are arranged in the space part of not arranging the lock mechanism constituting member in the lock box 13. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention makes it possible to suppress the operation sound particularly in a lock device in which a lock mechanism constituting member of at least a dharma shaft and a dead bolt that protrudes and retracts by rotation of the dharma shaft is provided in the lock box. Concerning sound-locking tablets.

  The lock device incorporates a lock mechanism that projects and retracts a metal dead bolt in a lock box made of a highly rigid metal plate, thereby making it difficult to break and improving crime prevention. The dead bolt protrudes and retracts from the lock box when a Dharma shaft, which is a lock mechanism component provided in the lock box, is rotated. In addition, the locking device includes a pin for guiding the slide of the dead bolt, a stopper for regulating the backward movement of the dead bolt, a support pin for swingably supporting the stopper, or a screw for fixing the lid of the lock box. A supporting / fastening member, a biasing spring for assisting the movement of each member, and the like are provided. In addition, in this seed lock device, a sickle-shaped sickle dead is projected from the tip of the deadbolt with an arc-shaped locus along with the protrusion of the deadbolt, and is hooked on the back of the strike plate on the door frame side. Also, a sickle lock device has been proposed that enables strong locking to the door frame.

  However, in the conventional locking device and sickle locking device described above, since most of the locking mechanism constituent members housed in the inside including the lock box are metal members, the operation sound generated at each locking / unlocking operation is There was a problem of unpleasantness such as sliding contact and impact sound. This unpleasant operation sound becomes more prominent in the sickle lock device having a large number of parts. And in the lock device with high operation frequency especially in the bedtime, silence of the operation sound is further required. On the other hand, in order to shield the operating sound leaking from the lock box, it may be possible to put a sound absorbing material on the outer wall surface of the lock box, but the lock box becomes larger and the mounting structure on the door changes. Was invited.

  The present invention has been made in view of the above situation, and provides a sound-absorbing lock that can reduce the operation sound generated by the lock mechanism constituent member that is generated in association with the locking / unlocking operation. The purpose is to obtain an operation sound lock.

Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments.
The sound-absorbing lock according to claim 1 of the present invention has at least a Dharma shaft 11 as a lock mechanism component in the lock box 13, and protrudes / retreats from the lock box 13 following the rotation of the Dharma shaft 11. Dead bolt 15 and pin / screw support / fastening members 33, 37, 39, 45 are incorporated,
Resin hollow blocks 55A, 55B formed in substantially the same shape as the space portions 53A, 53B, 53C in the space portions 53A, 53B, 53C in which the lock mechanism constituent members are not disposed in the lock box 13. , 55C.

  In this squeal lock, when a locking / unlocking operation is performed, an operating sound is generated by sliding contact or collision between the lock mechanism components or between the lock mechanism component and the lock box 13. The hollow blocks 55A, 55B, and 55C provided in the portions 53A, 53B, and 53C suppress the echo and resonance of the operating sound. In addition, since the operating sound generating portion is covered with the hollow blocks 55A, 55B, and 55C, the sound source is shielded by the resin hollow blocks 55A, 55B, and 55C that are difficult to transmit sound, and the sound insulation effect is enhanced.

  The sound-absorbing lock according to claim 2 is characterized in that the hollow blocks 55A, 55B, 55C have small chambers 71, 93, 101, 107, 109, 111, 113 communicating with the internal space of the lock box 13. To do.

  In this sound-suppressing lock, the operation sound generated by the locking / unlocking operation is transferred to the small chambers 71, 93, 101, 107, 109, 111, 113 of the hollow blocks 55A, 55B, 55C disposed in the space portions 53A, 53B, 53C. The sound energy is attenuated by the resonance of the operating sound of the specific frequency in the small chambers 71, 93, 101, 107, 109, 111, 113. That is, the operating sound is absorbed in the lock box. Further, since the small chambers 71, 93, 101, 107, 109, 111, and 113 are formed in the resin hollow blocks 55A, 55B, and 55C, it is difficult to generate sink marks or warps that are likely to occur during resin molding.

  The sound-absorbing lock according to claim 3 is characterized in that the hollow blocks 55B and 55C have bolt guides 85 and 117 which are provided around the entrance / exit 27a of the dead bolt 15 and are in sliding contact with the dead bolt 15.

  In this sound-suppressing lock, the dead bolt 15 that moves forwards and backwards comes into sliding contact with the bolt guides 85 and 117 connected to the resin hollow blocks 55B and 55C, and the dead bolt 15 directly contacts the metal lock box 13. The metal rubbing sound generated by sliding contact is not generated.

  The sound-absorbing lock according to claim 4 is characterized in that the hollow blocks 55A and 55B have guide means 61 and 75 of the lock mechanism constituting member.

  In this silencing lock, the metal rubbing sound of the lock mechanism constituent members other than the dead bolt 15 can be suppressed, and a guide such as a screw inserted from the outside of the lock box 13 can also be provided. The screw insertion at the time becomes smooth. That is, the insertion screw can be smoothly introduced to the screwing start position.

  The sound-absorbing lock according to claim 5 is characterized in that the hollow blocks 55A, 55B, 55C have positioning means 63, 67, 65, 77, 79, 83, 95, 97 for the lock mechanism constituent members. .

  In this sound-absorbing tablet, if the hollow blocks 55A, 55C are set in the lock box 13 in advance by the positioning means 63, 67, 65, 95, 97 connected to the hollow blocks 55A, 55B, 55C. Then, positioning of the lock mechanism constituent member to be attached later becomes possible. In the case of the hollow block 55B to be set later, the lock mechanism constituent member temporarily assembled is positioned by the positioning means 77, 79, 83, Can be positioned at a predetermined position.

  According to the sound-absorbing lock according to claim 1 of the present invention, in the lock box, a resin hollow formed in the space where the lock mechanism constituent member is not disposed and having substantially the same shape as the space. Since the block is provided, it is possible to prevent the operation sound generated by the lock mechanism constituent member generated by the locking / unlocking operation from being reflected or resonated in the space. In addition, since the operating sound generating portion is covered with the hollow block, a sound insulating effect is obtained, and sound leakage is reduced. As a result, it is possible to obtain a quiet operation sound lock that suppresses the operation sound.

  According to the sound-suppressing lock according to claim 2, since the hollow block has a small chamber communicating with the internal space of the lock box, the operation sound generated by the lock mechanism constituent member generated by the locking / unlocking operation is disposed in the space portion. The sound energy of a specific frequency can be attenuated by resonance by taking it into the chamber of the hollow block. Thereby, the operation sound can be suppressed and a lock with a quiet operation sound can be obtained. In addition, since the small chamber is formed in the hollow block made of resin, sink marks and warpage during molding are less likely to occur than in the case of the solid block, and a hollow block with high molding dimensional accuracy can be obtained.

  According to the sound-absorbing lock according to claim 3, since the hollow block has a bolt guide that is provided around the entrance and exit of the dead bolt and is in sliding contact with the dead bolt, the dead bolt does not directly come into sliding contact with the lock box. It is possible to mute the metal rubbing sound caused by the sliding contact between the bolt and the vicinity of the metal lock box doorway. Thereby, the lock | rock of the quiet operation sound by which the metal rubbing sound was suppressed can be obtained.

  According to the sound-absorbing lock according to claim 4, since the hollow block has the guide means for the lock mechanism constituent member, the lock mechanism constituent member comes into contact with the resin-made hollow block, and the lock mechanism constituent member is activated. The metal rubbing noise can be suppressed, and the workability at the time of assembling the fixed screw can be improved.

  According to the sound-absorbing lock according to claim 5, since the hollow block has positioning means for the locking mechanism constituent member, if the hollow block is set in the lock box in advance, the subsequent locking mechanism constituent member becomes the positioning means. Can be easily assembled at a predetermined position in the lock box, and if a hollow block is set later, the lock mechanism components that have been temporarily assembled can be accurately positioned to the predetermined position by the positioning means. can do. For this reason, it becomes possible to facilitate the arrangement work of the respective parts at the time of manufacture.

Hereinafter, preferred embodiments of a sound-absorbing lock according to the present invention will be described in detail with reference to the drawings.
1 is a side view of the sound-absorbing lock according to the present invention with the side plate removed, FIG. 2 is an exploded side view of the sound-absorbing lock shown in FIG. 1 with the hollow block removed, and FIG. 3 is an exploded view with the third hollow block removed. 4A is a side view of the first hollow block, FIG. 5B is a side view of the first hollow block, FIG. 5B is a side view of the second hollow block, and FIG. 5B is a side view of the second hollow block. FIG. 6A is a side view of the third hollow block, FIG. 6A is a side view of the third hollow block, FIG. 6B is a front view thereof, and FIG. FIG. 7 is an external perspective view of the sound-absorbing tablet viewed obliquely from below, and FIG. 8 is a side view showing a modified example of the sound-absorbing tablet that does not have a sickle lock.
The sound-absorbing lock 100 according to the present embodiment can be applied to a lock device having a sickle dead, for example. That is, a Dharma shaft 11 that is a lock mechanism constituent member, a dead bolt 15 that protrudes and retracts from the lock box 13 following the rotation of the Dalma shaft 11, a sickle dead 17 that is built into the tip of the dead bolt 15, A stopper 19 that prevents the dead bolt 15 from retreating from the protruding state, and a swinging rod 21 that restricts the rotation of the dharma shaft 11 within a rotation angle range of about 90 ° are provided.

  The lock box 13 is a flat rectangular lock box 13a that can be accommodated in a door (not shown), and a lid 13b (see FIG. 7) fixed to the opening on one side of the box 13a by screws. Consists of. A mounting plate 23 is provided on the front end surface of the lock box 13, and the mounting plate 23 is fixed to a door mouth (not shown) by a fixing screw 25. On the surface of the mounting plate 23, a front panel 27 that is exposed to the end is further fixed by a decorative screw 29. Thereby, the lock box 13 is covered by the front panel 27 at the door end, and the dead bolt 15 is advanced and retracted from the dead bolt entrance 27 a formed in the front panel 27.

  For example, a connecting portion of a cylinder lock provided on the outdoor surface of the door is engaged with one end side of the Dharma shaft 11. In addition, the other end side of the dharma shaft 11 is engaged with, for example, a thumb turn connecting portion provided on the inner surface of the door. The dharma shaft 11 is provided with a pressing bar 31 protruding radially outward, and the tip of the pressing bar 31 rotates to the tip of a swinging bar 21 that is rotatably supported by a support shaft 33 that is a support / fastening member. It is connected freely. Therefore, for example, the dharma shaft 11 is restricted to rotate within a rotation angle range of 90 °, and is rotated to one side of the rotation angle range of 90 ° by the swinging spring 35 extrapolated to the swinging rod 21. Energized to move.

  A guide shaft 37 as a support / fastening member is erected in the lock box 13, and the guide shaft 37 guides an elongated hole 15 a formed in the dead bolt 15. The dead bolt 15 is projected to the outside of the lock box 13 when the rear notch (not shown) is pressed against the pressing bar 31. The protruded dead bolt 15 is prevented from moving backward by the stopper 19 having a base end pivotably supported by a stopper shaft 39 which is a support / fastening member being pivotally locked by the biasing force of the stopper spring 41. It has come to be.

  Further, in the lock box 13, a sickle dead 17 is provided above the tip of the dead bolt 15 so as to be rotatable around a sickle shaft 43. The sickle dead 17 is housed inside a dead bolt 15 having a U-shaped cross section, and is linked to the dead bolt 15 via a sickle pin 45 that is a support / fastening member. Therefore, when the dead bolt 15 is projected from the lock box 13, the sickle dead 17 is projected in an arc shape around the sickle shaft 43 while engaging the sickle pin 45. Thereby, the sickle dead 17 is hooked on the back surface of the strike plate provided on the door frame side (not shown), and a high crime prevention lock state is realized.

  The dharma shaft 11 is rotated counterclockwise in FIG. 1 in a state where the dead bolt 15 is protruded, thereby pressing a rear notch (not shown) of the dead bolt 15 via the pressing bar 31 to Move 15 back. At this time, the release pin 47 simultaneously presses the stopper 19 to release the engaged state between the stopper 19 and the dead bolt 15. Further, in conjunction with the retreat of the dead bolt 15, the sickle dead 17 is also accommodated inside the dead bolt 15 via the sickle pin 45, and the latch with the strike plate (not shown) is released.

  In the lock box 13, a partition plate 49 is erected along the outer periphery of a part of the dharma shaft 11. In addition, a plurality of screw holes 51 for fixing the lid 13b are formed on the bottom surface of the lock box 13. A fixing screw (not shown), which is a support / fastening member that penetrates the lid 13b, is screwed into the screw hole 51.

  By the way, the space portion where the Dharma shaft 11, dead bolt 15, sickle dead 17, stopper 19, and swinging rod 21, etc., which are the lock mechanism constituent members, are formed in substantially the same shape as this space portion. A hollow block made of resin is provided. In the present embodiment, the hollow block includes a first hollow block 55A provided in the first space 53A, a second hollow block 55B provided in the second space 53B, and a third provided in the third space 53C. It is divided into three with the hollow block 55C.

  As shown in FIG. 3, the first hollow block 55 </ b> A and the third hollow block 55 </ b> C are set on the box portion 13 a under the dead bolt 15 before the dead bolt 15 is assembled. On the other hand, the second hollow block 55B is disposed above the dead bolt 15 in this state. That is, the dead bolt 15 is sandwiched between the third hollow block 55C and the second hollow block 55B.

  As shown in FIG. 4, the first hollow block 55 </ b> A is formed with a Dharma shaft frame 61 that accommodates the Dalma shaft 11 on the inner side at the center. A plurality of screw hole guides 63 are formed in the first hollow block 55 </ b> A above the Dharma shaft frame 61. Below the Dharma shaft frame 61, a pivot shaft 65 and a guide shaft hole 67 are formed. A plurality of small chambers 71 are formed at the distal end 69 of the first hollow block 55A. The small chamber 71 is partitioned into partition walls, and is further divided by a midsole 73 into a first upper small chamber 71a, a second upper small chamber 71b, a first lower small chamber 71c, a second lower small chamber 71d, and a through chamber 71e. A partition plate hole 74 for inserting the partition plate 49 is formed between the tip portion 69 and the Dalma shaft frame 61.

  As shown in FIG. 5, the second hollow block 55 </ b> B is formed with a Dalma shaft frame 75 for avoiding the Dalma shaft 11 below the Dalma shaft 11. Below the Dharma shaft frame 75, a pivot shaft 77 and a stopper shaft 79 are formed. Furthermore, a sickle shaft hole 83 and a bolt guide 85 are formed at the tip 81 of the second hollow block 55B. The bolt guide 85 slidably guides the dead bolt 15 with the guide surface 85a on one side surface. The front end of the bolt guide 85 is inserted into the gap between the entrance / exit 27 a of the front panel 27 and the dead bolt 15. A partition wall plate 89 and a guide shaft hole 91 are formed at the center of the second hollow block 55B. A lower small chamber 93 is formed at the upper end of the second hollow block 55B.

  As shown in FIG. 6, a guide shaft blur 95 and a stopper blur 97 are formed at the rear edge of the third hollow block 55 </ b> C. A sickle shaft hole 99 and a small chamber 101 are formed in the upper part of the third hollow block 55C. In addition, a screw hole guide 103 of the screw hole 51 (see FIG. 2), an upper small chamber 107 divided by an insole 105, and a lower small chamber 109 are formed in the lower portion of the third hollow block 55C. In addition, upper small chambers 111 and 113 are formed behind the upper small chamber 107. Further, a bolt guide 117 is formed at the tip 115 of the third hollow block 55C. The bolt guide 117 slides and guides the dead bolt 15 by the guide surface 117a on the one side surface side. The front end of the bolt guide 117 is inserted into the gap between the doorway 27 a of the front panel 27 and the dead bolt 15.

  The sound suppressing tablet 100 accommodates such first hollow block 55A, second hollow block 55B, and third hollow block 55C in the first, second, and third space portions 53A, 53B, and 53C. As shown in FIG. 7, the outer shape of the conventional sickle lock device is the same. However, the bolt guide 85 of the third hollow block 55C and the bolt guide 117 of the second hollow block 55B are exposed at the dead bolt entrance 27a through which the dead bolt 15 advances and retreats.

  In this squeal lock, when a locking / unlocking operation is performed, an operation sound is generated by sliding contact or collision between the lock mechanism components or between the lock mechanism component and the lock box 13. The first hollow block 55A, the second hollow block 55B, and the third hollow provided in the first space portion 53A, the second space portion 53B, and the third space portion 53C (hereinafter also referred to as “space portions 53A, 53B, and 53C”). The block 55C suppresses the echo and resonance of the operating sound. Further, the operating sound generating portion is covered with the first hollow block 55A, the second hollow block 55B, and the third hollow block 55C (hereinafter also referred to as “hollow blocks 55A, 55B, 55C”), so that the sound source is Is blocked by a resin hollow block that is difficult to transmit the sound, and the sound insulation effect is enhanced.

  And since hollow block 55A, 55B, 55C has the small chambers 71, 93, 101, 107, 109, 111, 113 connected to the internal space of the lock box 13, the operation sound generated by the locking / unlocking operation is generated in the space portion. The small blocks 71, 93, 101, 107, 109, 111, and 113 of the hollow blocks 55A, 55B, and 55C disposed in the 53A, 53B, and 53C are taken into the small chambers 71, 93, 101, and 107. , 109, 111, 113, the sound energy is attenuated. That is, the operating sound is absorbed in the lock box 13.

  Note that the small chambers 71, 93, 101, 107, 109, 111, and 113 are more preferably opened through slits. In other words, the small chambers 71, 93, 101, 107, 109, 111, 113 and the slit constitute a so-called Helmholtz resonator that takes in sound energy of a specific frequency by resonance and attenuates it. In this case, the small chambers 71, 93, 101, 107, 109, 111, 113 are set to specific volumes.

In such a configuration, the resonance frequency f of the resonator is
f [Hz] = (c / 2π) × √ (s / (v × (t + δ))
Is given by Equation 1. here,
c: sound velocity s: opening end cross-sectional area v: chamber volume t: plate thickness of the slit portion, that is, distance through which sound passes through the slit δ: correction term.

  Therefore, the small chambers 71, 93, 101, 107, 109, 111, and 113 have the frequency obtained by the above-described equation 1 by appropriately setting the opening end cross-sectional area s, the volume v, and the sound passage distance t. It functions as a Helmholtz resonator that resonates with and absorbs the sound of f, and a sound absorption effect in a desired frequency band can be obtained.

  Further, since the small chambers 71, 93, 101, 107, 109, 111, and 113 are formed in the resin hollow blocks 55A, 55B, and 55C, it is difficult to generate sink marks or warps that are likely to occur during resin molding.

  Further, since the hollow blocks 55B and 55C have bolt guides 85 and 117 that are provided around the entrance / exit 27a of the dead bolt 15 and are in sliding contact with the dead bolt 15, the dead bolt 15 that moves back and forth is made of resin hollow blocks 55B and 55C. Therefore, the metal rubbing sound generated when the dead bolt 15 directly contacts the metal lock box 13 is not generated. Thereby, the lock | rock of the quiet operation sound by which the metal rubbing sound was suppressed can be obtained.

  Further, since the hollow blocks 55A and 55B have the Dalma shaft frame 61 and the Dalma shaft frame 75 which are guide means for the lock mechanism constituent member, it is possible to suppress metal rubbing noise of the lock mechanism constituent members other than the dead bolt 15. Further, since it is possible to guide a screw or the like inserted from the outside of the lock box 13, the screw insertion property when the fixed screw is inserted and assembled becomes smooth. That is, the insertion screw can be smoothly introduced to the screwing start position. Thereby, the metal rubbing sound at the time of the action | operation of a locking mechanism structural member can be suppressed, or workability | operativity at the time of fixed screw insertion assembly can be made favorable.

  Further, the hollow blocks 55A, 55B, and 55C are screw hole guides 63, guide shaft holes 67, shaft shafts 65, shaft shafts 77, stopper shafts 79, sickle shaft holes 83, guides, which are positioning means for the lock mechanism constituent members. Since it has the shaft side 95, the stopper side 97, and the sickle shaft hole 99, if the hollow blocks 55A and 55C are set in the lock box 13 in advance, it becomes possible to position the lock mechanism constituent member to be attached later. In the case of the hollow block 55B to be set later, the lock mechanism constituting member that has been temporarily assembled can be positioned at a predetermined position by the positioning means. Thereby, a lock mechanism structural member can be positioned to a predetermined position with high precision by a positioning means.

  Therefore, according to the sound-absorbing lock 100, in the lock box 13, the space portions 53A, 53B, and 53C in which the lock mechanism constituent members are not disposed are formed in substantially the same shape as the space portions 53A, 53B, and 53C. Since the resin-made hollow blocks 55A, 55B, and 55C are provided, it is possible to prevent the operation sound generated by the locking mechanism constituent member generated by the locking / unlocking operation from being reflected or resonated in the space portions 53A, 53B, and 53C. In addition, since the operating sound generating portion is covered with the hollow blocks 55A, 55B, and 55C, a sound insulating effect is also obtained, and sound leakage is reduced. As a result, it is possible to obtain a quiet operation sound lock that suppresses the operation sound.

  In the above embodiment, the sickle lock device has been described as an example. However, the present invention may be applied to the ordinary lock device 100A shown in FIG. It may be applied to a locking device having another configuration, such as a locking device having a configuration including: a space portion in the lock box where the lock mechanism constituent member is not disposed and having a shape substantially the same as the space portion. By providing the resin hollow block, the same effect as described above can be obtained.

It is the side view which removed the side plate of the sound-absorbing lock concerning the present invention. It is the disassembled side view which removed the hollow block of the sound suppression tablet shown in FIG. It is the disassembled side view which removed the 3rd hollow block. It is explanatory drawing which showed the side view of the 1st hollow block to (a), the front view to (b), and the II cross section to (c). It is explanatory drawing which showed the side view of the 2nd hollow block to (a), the front view to (b), and the II-II cross section to (c). It is explanatory drawing which showed the side view of the 3rd hollow block to (a), the front view to (b), and the III-III cross section to (c). It is the external appearance perspective view which looked at the silencing tablet from diagonally downward. It is a side view showing the modification of the soundproof tablet which does not have a sickle lock.

Explanation of symbols

11 ... Shaft lock mechanism component (Dharma shaft)
13 ... Lock box 15 ... Shaft lock mechanism component (dead bolt)
19: Shaft lock mechanism component (stopper)
27a ... entrance / exit 33 ... support / fastening member (support shaft)
37 ... Support / fastening member (guide shaft)
39 ... Support / fastening member (stopper shaft)
45 ... Support / fastening member (sickle pin)
53A, 53B, 53C ... Space 55A, 55B, 55C ... Hollow block 61 ... Guide means (Dharma shaft frame)
63 ... Positioning means (screw hole guide)
65 ... Positioning means (support shaft skew)
67 ... Positioning means (guide shaft hole)
71, 93, 101, 107, 109, 111, 113 ... small chamber 75 ... guide means (Dharma shaft frame)
77 ... Positioning means
79 ... Positioning means (stopper)
83 ... Positioning means (sickle shaft hole)
85, 117 ... Bolt guide 95 ... Positioning means (guide shaft misalignment)
97 ... Positioning means (stopper)
100, 100A ... Suppression lock

Claims (5)

The lock box incorporates at least a Dharma shaft, which is a lock mechanism component, a dead bolt that protrudes and retracts from the lock box as the Dharma shaft rotates, and a pin and screw support / fastening member. ,
A sound-absorbing tablet, characterized in that a resin hollow block formed in substantially the same shape as the space portion is provided in a space portion in which the lock mechanism constituent member is not disposed in the lock box.   The sound-absorbing tablet according to claim 1, wherein the hollow block has a small chamber communicating with the internal space of the lock box.   The sound-absorbing tablet according to claim 1 or 2, wherein the hollow block has a bolt guide that is provided around an entrance / exit of the dead bolt and is in sliding contact with the dead bolt.   The sound-absorbing tablet according to any one of claims 1, 2, and 3, wherein the hollow block includes guide means for the lock mechanism constituent member.   The sound-absorbing tablet according to any one of claims 1, 2, 3, and 4, wherein the hollow block has positioning means for the lock mechanism constituent member.

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