Vibration-proof structure for door locking device

Abstract

To prevent a rod 5 of a locking device installed in a door body 1 from vibrating during an opening / closing operation of the door body 1 and generating abnormal noise.SOLUTION: There is provided a vibration-isolating member 9 at the intermediate portion of a rod bar 5 between a lock body 4 and a rod guide 6 provided at the upper end of a door body 1, the contact point 9e of a through hole 9c in the vibration -isolating member 9 to the rod bar 5 is positioned orthogonally to the open / close movement direction of the door body 1 to isolate the rod bar 5 during an open / close movement of the door body 1.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to the technical field of vibration-proof structures in locking devices for door bodies installed to open and close entrances to buildings such as houses and buildings. [Background technology]

[0002] Today, when a locking device is installed in a door body (door frame, door panel) installed to open and close an entrance, a known locking device is configured to include a lock body that is installed in the door body and is operated to lock and unlock using an inserted key or operating knob (operating tool), a rod that extends from the lock body while penetrating the door body and moves up and down in conjunction with the locking operation, and a locking receiving portion that is installed on the main body side and engages with the locking portion at the tip of the rod that protrudes from the door body when the lock body is operated to restrict the opening movement of the door body. Since such rods are long, they may vibrate when the door is opened or closed, causing unpleasant noises. To prevent this, a door equipped with a vibration-damping material is known (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 10-153031 Summary of the Invention [Problem to be solved by the invention]

[0004] However, all of the above-mentioned conventional vibration-damping materials were arranged in the protruding portion of the rod that forms the upper edge of the door body (or sometimes the lower edge), so the distance from the location of the lock body to the location of the vibration-damping material, which forms the upper edge of the door body, was long.As a result, the rod was still prone to vibration, making it difficult to prevent the generation of unpleasant noises. Furthermore, in the conventional locking devices, the vibration-damping material is in sliding contact with the entire circumference of the rod, which increases the sliding resistance of the vibration-damping material against the rod, thereby impairing the smoothness and agility of lock operation. These are the issues that the present invention aims to solve. [Means for solving the problem]

[0005] The present invention was created in view of the above-mentioned circumstances and with the aim of solving these problems. The invention of claim 1 is a vibration-proof structure for a locking device for a door body that opens and closes an entrance and exits, the locking device comprising: a lock body that is attached to the door body and performs the locking operation for locking and unlocking; a rod that extends from the lock body in the direction of the view and moves in conjunction with the locking operation of the lock body; and a locking receiving portion that is attached to a body side member and engages with the locking portion at the end of the rod that protrudes from the door body as the locking operation of the lock body occurs, thereby restricting the opening movement of the door body. In this locking device for a door body, a vibration-proof material with a through hole through which the rod passes loosely is provided in the door body in the intermediate portion between the portions where the rod of the door body protrudes from the lock body, and the vibration-proof material is attached so that the inner edge of the through hole abuts against the rod. The invention of claim 2 is a vibration-proof structure for a locking device of a door body according to claim 1, characterized in that the vibration-proof material is attached in a state in which the through hole is biased in a direction perpendicular to the opening and closing movement direction of the door body. The invention of claim 3 is a vibration-proof structure in a locking device for a door body described in claim 1 or 2, characterized in that the door body is a sliding door that moves open and closed in the left-right direction, and the vibration-proof material is attached in a state where the through hole is biased in the forward direction. The invention of claim 4 is a vibration-proof structure in a locking device for a door body described in claim 1 or 2, characterized in that the door body is a hinged door that moves open and closed in the forward and backward directions, and the vibration-proof material is attached in a state where the through hole is biased in the finding direction. The invention of claim 5 is a vibration-proof structure for a locking device of a door body described in claim 4, characterized in that the rod is arranged to pass through the front and rear panel panels that make up the vertical stile of the door body in a loose fit manner, the vibration-proof material comprises a mounting bracket attached to one of the panel panels and a vibration-proof rubber having a through hole formed therein and attached to the mounting bracket, and the mounting bracket is attached in a state where it is biased in the viewing direction relative to the panel panels. The invention of claim 6 is a vibration-proof structure for a locking device of a door body described in any one of claims 1 to 5, characterized in that the through hole is formed with a folded corner portion, and the vibration-proof material is attached biased in a direction of abutting against the rod at two points that sandwich the folded corner portion in the opening and closing direction of the door body. The invention of claim 7 is the vibration-proof structure for a locking device of a door body according to any one of claims 1 to 6, characterized in that a plurality of vibration-proof materials are provided on the rod with gaps between them. The invention of claim 8 is a vibration-proof structure for a locking device of a door body described in claim 7, characterized in that the abutment positions of the multiple vibration-proof materials against the rod are shifted in the circumferential direction of the rod. The invention of claim 9 is a vibration-proof structure in a locking device for a door body described in any one of claims 1 to 8, characterized in that the vibration-proof material has an inner edge portion that is biased toward the through hole and abuts against the rod. The invention of claim 10 is the vibration-proof structure for a locking device for a door body according to claim 9, characterized in that the biased inner edge portion is a protrusion. The invention of claim 11 is the vibration-proof structure for the locking device of the door body according to claim 9, characterized in that the biased inner edge portion is formed by providing a through hole biased relative to the vibration-proof material. [Effects of the Invention]

[0006] By adopting the invention of claim 1, the vibration-damping material is attached to the intermediate portion between the lock body and the portion where the rod extends from the door body, and the vibration-damping material provided in this intermediate portion abuts against the rod in an uneven state to dampen vibration.As a result, it is possible to regulate inadvertent vibration of the rod while avoiding impairing the smoothness and lightness of lock operation, and it is also possible to prevent the generation of unpleasant noises. According to the invention of claim 2, the vibration-damping material is attached in a state where it is biased in a direction perpendicular to the opening and closing movement direction of the door body, and the inner surface of the through hole abuts against the rod which tends to vibrate on the opening and closing direction side relative to the part of the through hole where the rod abuts, thereby ensuring reliable vibration damping of the rod. As a result, high vibration damping performance can be achieved and the generation of unpleasant noise can be avoided. According to the invention of claim 3, when the door body is a sliding door, the vibration-proof material is biased in the projection direction of the door body, thereby making it possible to exhibit the high vibration-proof performance. According to the invention of claim 4, when the door body is a hinged door, the vibration-proof material is biased in the direction of the door body, thereby making it possible to exhibit the high vibration-proof performance. By adopting the invention of claim 5, in a swing door, the vibration-damping material is made up of a mounting bracket and vibration-damping rubber, and by attaching the mounting bracket offset in the forward direction relative to the front or rear face plate of the vertical stile, vibration damping of the rod can be easily achieved. According to the invention of claim 6, the vibration-damping material has a through hole with a bent corner portion formed therein, and the bent corner portion is biased to abut against the rod at two points sandwiching the door body in the opening and closing direction, thereby ensuring a reliable vibration-damping effect at the rod abutment point on the inner surface of the through hole. According to the invention of claim 7, by providing a plurality of vibration-damping materials, a higher vibration-damping effect can be achieved. According to the invention of claim 8, when multiple vibration-damping materials are provided, the positions at which they abut against the rod are shifted, thereby enabling vibration damping in multiple directions. For example, when the door body is a sliding door and the door body is exposed to wind and sways in a direction different from the opening and closing direction, it is possible to prevent the rod from vibrating in the forward and backward directions in response to the swaying. According to the invention of claim 9, the vibration-proof material can be configured so that the through-holes are provided in a biased state, which increases the degree of freedom in the vibration-proof material structure. According to the invention of claim 10, the portion of the vibration-proofing material that comes into contact with the rod can be a protrusion provided on the inner edge. According to the invention of claim 11, the through hole that contacts the rod is made of a vibration-damping material that is biased, so there is no need to bias the attachment of the vibration-damping material to the door body. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. [Figure 2] FIG. 2 is a cross-sectional plan view of a main part of a door body when the door body is a sliding door. [Figure 3] FIG. [Figure 4] FIG. [Figure 5] (A)(B)(C)(D) are a cross-sectional plan view, a longitudinal front view, a longitudinal side view, and a cross-sectional plan view of the vibration-damping material portion of the same door body in a reference state with the centers of the rod and the through hole aligned. [Figure 6] 10A, 10B, and 10C show a second embodiment, and are a cross-sectional plan view, a longitudinal front view, and a cross-sectional side view of a vibration-proof material portion when the door body is a hinged door. [Figure 7] (A)(B)(C)(D) are a longitudinal cross-sectional front view, a longitudinal cross-sectional side view of the vibration-damping material portion, a cross-sectional plan view of the upper vibration-damping material portion, and a cross-sectional plan view of the lower vibration-damping material portion showing the third embodiment. [Figure 8] 10(A) and 10(B) are cross-sectional plan views of vibration-proof material portions showing the fourth and fifth embodiments, respectively. [Figure 9] 10A and 10B are a plan view and a longitudinal sectional side view of a vibration-proof material portion showing a sixth embodiment, and 10C and 10D are a vertical sectional side view and a longitudinal sectional side view of a vibration-proof material portion showing a seventh embodiment, respectively. [Figure 10] 13(A) and 13(B) are a plan view and a side view of a vibration-proof material portion showing the eighth embodiment. [Figure 11] FIG. 13 is a front view of a door body according to a ninth embodiment. [Figure 12] FIG. 4 is a vertical cross-sectional side view of a rod portion of the door body. [Figure 13] FIG. 4 is a vertical sectional front view of a rod portion of the door body. [Figure 14] 1A and 1B are cross-sectional views of the vibration-isolating material portion of the upper rod and the lower rod, respectively. [Figure 15] (A)(B) are plan and side views of the upper vibration-damping material, and (C)(D) are plan and side views of the lower vibration-damping material. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a door body, which is configured with front and back panels 1e, and is a sliding door type door that opens and closes the entrance E by having a hanger roller 3 protruding from the upper edge of the door body 1 move left and right on a hanger rail 2 arranged on a frame member above the entrance E, and a lock main body 4 constituting a lock device is provided on the door leading edge of the door body 1.

[0009] The lock body 4 is incorporated into the door body 1 in a vertically intermediate position where it can be easily operated by a person while abutting (close to) the trailing edge of the leading vertical frame member 1a that constitutes the door body 1. A general-purpose lock is used that can be locked and unlocked by turning an operating knob 4a on the indoor side or a keyhole (not shown) on the outdoor side. The leading vertical frame member 1a is formed into a hollow tube T by providing a door stop member 1b at its leading side that abuts against the leading vertical door frame 7 when the door body 1 is closed. Various door stop members 1b can be used as needed, including those made of rubber-like elastic material or metal materials such as aluminum. Meanwhile, the lower edge of a rod 5, which is pillar- or tubular-shaped (various shapes are used for the external shape, such as circular, flat, square, hexagonal, etc.), is interlocked with an operating part 4e that protrudes from the lock body 4 onto the door-end vertical frame member 1a, which is U-shaped in plan view. The rod 5 extends upward (in the viewing direction) while passing through a hollow tube T formed in the door-end vertical frame member 1a. The lower edge of a locking part (locking rod) 5a, which has a larger diameter (width) than the rod 5, is connected to the upper edge of the rod 5. In this case, the locking part 5a passes through a guide tube part 6a formed in a rod guide 6 provided in the upper frame member 1f, which forms the upper edge of the door body 1, so as to be able to move up and down. Incidentally, the hole diameter of the guide tube portion 6a is set to a dimension that allows it to slide against the engaging portion 5a or to face it with a small gap (for example, 0.5 mm).By configuring it in this way, it is configured to exhibit a vibration-damping (anti-vibration) function at the part of the rod 5 that extends from the upper edge of the door body 1 (the upper edge of the guide tube portion 6a). When the lock body 4 is operated, the rod 5 moves up and down, causing the door body 1 to change position between an unlocked position in which the amount of protrusion of the locking portion 5a from the rod guide 6 is small and it does not reach the locking receiving portion 8 provided on the bracket 7a protruding from the door vertical frame (body side member) 7 on the door front side, allowing the door body 1 to open, and a locked position in which the amount of protrusion of the locking portion 5a from the rod guide 6 is large and the large protruding part of the locking portion 5a engages with the locking receiving portion 8, restricting the opening movement of the door body 1.

[0010] Reference numeral 9 denotes a vibration-isolating material made of a rubber elastic material for isolating the vibration of the rod 5, and the vibration-isolating material 9 is disposed in the vertical intermediate portion (preferably the center portion) between the operating portion 4b of the lock body 4 and the rod guide 6. At this disposed position, the base portion 9a of the vibration-isolating material 9 is fixed to the inner surface of the spanning portion 1c of the door-end vertical frame member 1a by a fixing means such as an adhesive or double-sided adhesive tape, and the tip portion 9b is formed with an arc-shaped through-hole 9c that is larger in diameter than the rod 5 and large enough for the rod 5 to fit loosely, and furthermore, a notched groove 9d is formed at the tip portion of the through-hole 9c so that the rod 5 can be force-fitted into it.

[0011] 5(D), the rod 5 is designed so that its center Y is located on the center line X of the door body 1 in the projection direction (thickness direction, front-to-back direction), while the vibration-damping material 9 is designed so that when the base 9a is attached to the door-end vertical frame member 1a so that the center Z of the through hole 9c is located on the center line X, the center Z of the through hole 9c and the center Y of the rod 5 (center line, center of gravity when cross-sectioned) coincide with each other. In this case, the rod 5 is fitted loosely into the through hole 9c, with a gap between them that does not abut on it. As a result, in this reference example, the gap between the rod 5 and the through hole 9c allows the rod 5 to vibrate, and vibration is not completely damped, causing the rod 5 to vibrate when the door body 1 is opened or closed, resulting in noise. In contrast to this, in this embodiment, the vibration-damping material 9 is biased to one side of the front direction of the door body 1 and abuts against the rod 5 at a contact point 9e which is a single point when viewed in a plane relative to the inner edge (inner peripheral edge) of the through hole 9c. In this case, the contact point 9e is biased so that it abuts against the rod 5 at a single point on the through hole 9c which is located in a direction perpendicular to the center Z of the through hole 9c and the opening / closing movement direction (front direction) of the door body 1 (see Figures 5(A) to (C)). In addition, since the vibration-damping material 9 in this embodiment is configured to be long in the vertical direction, the contact point 9e when the rod 5 contacts the through hole 9c in a plan view is essentially a linear contact that is long in the vertical direction.

[0012] By attaching the vibration-damping material 9 to the door body 1 in this manner, when the door body 1 moves left and right to open and close, the rod 5 moves left and right relative to the door body 1 due to inertia, vibrating. However, since the rod 5 abuts at a single abutment point 9e, which is the inner surface on the forward direction side of the through hole 9c, inner surfaces are arranged on both the left and right sides of the abutment point 9e in an arc-shaped manner toward the center Z, thereby regulating vibration.

[0013] In the present embodiment configured as described above, a vibration-damping material 9 is provided to dampen the vibration of the rod, which vibrates due to inertia when the door body 1 is opened or closed. The vibration-damping material 9 is provided in the vertical middle section between the lock body 4 and the rod guide 6 provided at the upper edge of the door body 1 so that the rod of the door body 1 protrudes, thereby achieving a vibration-damping function. Furthermore, in this case, the through hole 9c formed in the vibration-damping material 9 abuts the rod 5 in a biased manner. As a result, the vibration of the rod 5 is damped at the middle section of the rod 5, with the abutment surface against the through hole 9c being small and the increase in sliding resistance being reduced. This means that the vibration of the rod 5 can be regulated while maintaining smooth operability of the lock, and unpleasant noises can be effectively prevented.

[0014] Moreover, in this case, the door body 1 is a sliding door that opens and closes in the left-right direction, and the vibration-damping material 9 is attached at a position offset in the projected direction perpendicular to the opening and closing movement direction of the door body 1, so that the inner surfaces of the through-hole 9c on both the left and right sides in the opening and closing direction of the door body 1 form bulging arc-shaped inner surfaces relative to the abutment point 9e where the rod 5 of the through-hole 9c abuts. As a result, the rod 5, which tends to vibrate in the left-right direction, abuts against the bulging arc-shaped inner surfaces, thereby reliably damping the vibration of the rod 5 and preventing the generation of unpleasant noises. Moreover, since the rod 5, which is damped in this way, abuts against the through-hole 9c at only one abutment point 9e, which is a small number of abutments, it is possible to avoid a heavy locking operation and impaired operability.

[0015] This vibration damping of the rod 5 is not limited to sliding door type door bodies 1, but can also be implemented in hinged door type door bodies 1 that swing open and close in the forward and backward directions using the end edge on the hanging side as a swinging support axis, as in the second embodiment shown in Figure 6. In this case, since the door body 1 moves in the front-to-rear direction during opening and closing, it is preferable that the vibration-isolating material 9 be biased in the viewing direction (left-to-right direction) of the door body 1. It is also preferable that the contact point 9e of the rod 5 of the vibration-isolating material 9, as viewed from above, be in a left-to-right position perpendicular to the front-to-rear direction, which is the direction of opening and closing movement of the door body 1. However, if the vibration-isolating material 9 used in the above embodiment is used, it will not have enough length (width) in the left-to-right direction to make the contact, so by attaching it to the door-end vertical frame member 1a via an interposing member (spacer) 10 that has the necessary thickness, it will be possible to attach the vibration-isolating material 9 at a position biased to the rod 5 (see Figure 6), and this will enable the use of common parts. Of course, the vibration-proofing material 9 can be configured so that the base portion 9a is thick enough that the interposing material 10 is not necessary.

[0016] Furthermore, the present invention is not limited to the first and second embodiments, but may be implemented as a third embodiment and subsequent embodiments shown in FIG. In the third embodiment, two (or more) vibration-damping materials 9 (9U, 9D) are provided in the vertical middle portion with a gap therebetween, and in this case, it is preferable that the abutment points 9Ue, 9De of each vibration-damping material 9U, 9D with respect to the through-holes 9Uc, 9Dc are different. Therefore, in the third embodiment, the upper vibration-damping material 9U is arranged such that the abutment point 9Ue is biased in one direction in the front-to-rear direction with respect to the center Z of the through-hole 9c, as in the first embodiment, and the lower vibration-damping material 9D is arranged such that the abutment point 9De is biased in one direction in the left-to-right direction with respect to the center Z of the through-hole 9c, as in the second embodiment. By doing so, for example, if the door body 1 is a sliding door, in addition to the vibration-damping effect of the rod 5 when it moves left and right to open and close, the vibration-damping effect of the rod 5 can be exerted when the door body 1 is swayed in the front-to-rear direction in a strong wind, for example. Of course, it goes without saying that vibration isolation of the rod 5 by providing such a plurality of vibration isolation materials 9 is not limited to sliding doors, but can also be implemented in hinged doors.

[0017] Furthermore, the vibration-isolating material 9 can be configured as in the fourth and fifth embodiments shown in Figures 8(A) and 8(B), in which the vibration-isolating material 9 has a through hole 9c with a bent corner portion 9f formed therein, and the vibration-isolating material 9 is attached so that the rod 5 abuts on the rod 5 at two points sandwiching the bent corner portion 9f, which become abutment points 9e. In this case, the fourth embodiment shown in FIG. 8(A) is preferably used for a hinged door in which the door body 1 opens and closes in the front-to-back direction, while the fifth embodiment shown in FIG. 8(B) is preferably used for a sliding door in which the door body 1 opens and closes in the left-to-right direction. The structure shown in FIG. 8(B) uses an interposing piece 10 to standardize the components when attaching the vibration-damping material 9 to the leading vertical frame member 1a, but the attachment position on the leading vertical frame member 1a is the leg piece 1d on one side in the front-to-back direction. These embodiments achieve a high vibration suppression effect in the opening and closing direction of the rod 5 by using the two contact points 9e, thereby achieving a superior vibration-damping effect. Although the present embodiment uses the interposing piece 10 because the same vibration-damping material 9 is used, the interposing piece 10 can be eliminated by varying the shape of the base 9a of the vibration-damping material 9. Incidentally, depending on the door body 1, for example, in the first, second and third embodiments, if the spanning portion 1c of the vertical frame member 1a is shallow by the thickness of the intermediate material 10, or in the fourth and fifth embodiments, if the distances from the spanning portion 1c and the leg portion 1d to the rod 5 are equal, the intermediate material 10 becomes unnecessary, and in each form, vibration damping can be achieved in the same manner as described above using vibration-damping material 9 of the same shape.

[0018] Furthermore, the present invention can also be applied to sixth and seventh embodiments shown in Fig. 9. The sixth embodiment shown in Fig. 9(A) and (B) has strip-like protrusions 9g that are long in the vertical direction (for example, the length of the vibration-proofing material 9) to form contact points, while the seventh embodiment shown in Fig. 9(C) and (D) has dot-like protrusions 9h, and the present invention can also be implemented in these ways. It goes without saying that when such protrusions are formed, their locations, number, etc. can be appropriately set as needed.

[0019] In the eighth embodiment shown in Figures 10(A) and (B), when the door body 1 is a hinged door as well as a sliding door, the through hole 9c formed in the vibration-damping material 9 has the center Z of the through hole 9c biased in the front-to-rear direction relative to the center line Y of the vibration-damping material 9 in the front-to-rear direction (projection direction), and the vibration-damping material 9 is attached so that the center line Y coincides with the center line X of the door body 1 in the width direction (projection direction), so that the inner edge of the through hole 9c abuts the rod 5. With this configuration, the vibration-damping material 9 can be positioned in the center corresponding to the center line X of the door body 1 in the projection direction, improving assembly ease.

[0020] The present invention can also be embodied as a ninth embodiment shown in Figure 11 and subsequent drawings. This embodiment is provided for a swing-door door, and includes a vertical auxiliary frame member 11 extending from the trailing edge of the U-shaped leading-edge vertical frame member 1a of the door body 1 toward the trailing edge. These frame members 1a and 11 form the leading-edge vertical stile of the door body 1. The auxiliary frame member 11 is U-shaped and includes front and rear frame plates (face plates) 11a and 11b and a trailing-edge frame plate 11c bent from the trailing edge of one frame plate 11a to abut the other frame plate 11b. The lock body 4 is assembled so that it extends into the auxiliary frame member 11. In this embodiment, the lock body 4 is separately attached above the operating handle 20a for opening and closing the door body 1, which is described later and is operated to open or close the door body 1.

[0021] The rod 5 provided on the lock body 4 is configured to extend in both the vertical direction from the upper and lower surfaces on the door end side of the lock body 4, forming an upper rod 5b and a lower rod 5c, and by operating the locking operation handle 4b provided on the lock body 4, the upper and lower rods 5b, 5c move forward and backward in opposite directions. Furthermore, with this device, when the door body 1 is in the closed position and the handle 4b is in the downward locked position, the deadbolt 4c protrudes from the lock body 4 toward the door edge and engages with the latch receiver 12a provided on the door edge vertical frame 12, and the upper and lower rods 5b, 5c move vertically to protrude from the door body 1, thereby locking the door body 1, which will be described later.However, since the configuration of the lock body 4 is all well known, detailed explanations will be omitted. Moreover, in this device, the core material (not shown) is arranged closer to the door trailing edge than the door trailing edge frame plate 11c, so the up and down movement of the rod 5 (both upper and lower rods 5b, 5c) is not affected by the core material.

[0022] In this embodiment, when the handle 4b is operated to move the upper rod 5b upward and protrude from the upper edge of the door body 1, the locking portion 5a provided on the upper edge of the upper rod 5b fits into and locks into the lock receiving portion 13a provided on the upper door frame 13. On the other hand, when the handle 4b is operated to move the lower rod 5c downward and protrude from the lower edge of the door body 1, the locking portion 5a provided on the lower edge of the lower rod 5c fits into and locks with the locking receiving portion 14a provided on the door sill (sill) 14. In this way, the door body 1 of this embodiment is configured to be locked at three points: the top, bottom, and the door leading edge. In this structure, the upper rod 5b is shorter than the lower rod 5c and has a smaller diameter. Of course, the upper rod 5b and the lower rod 5c may have the same diameter. In this embodiment, a locking device 20 is provided in addition to the lock body 4, but this locking device 20 is a general-purpose device provided on the door body 1, and is provided with the aforementioned operating handle 20a which operates the extension and retraction of a latch (not shown) to open and close the door body 1, and a key operating unit 20b which locks by extending and retracting a deadbolt (not shown), and is configured to allow double locking in addition to locking by the lock body 4.

[0023] In this embodiment configured as above, vibration-isolating materials 15, 16 are arranged in one location in the vertical middle of the short upper rod 5b, and in two locations with a gap in between in the vertical middle of the long lower rod 5c. The upper and lower vibration-isolating materials 15, 16 are each configured with L-shaped mounting brackets 15a, 16a and arc-shaped vibration-isolating rubber pieces 15b, 16b attached to the horizontal pieces of the mounting brackets 15a, 16a, and the upper and lower vibration-isolating materials 15, 16 are attached by fastening means such as welding or screw fixing (in this embodiment, welding is used) to one of the frame plates 11a. At this time, as shown in Figures 14(A) and (B), the upper and lower rods 5b, 5c are set (designed) so that their centers Y are located on the center line X of the door body 1 in the front direction, while the inner edges of the vibration-damping rubbers 15b, 16b are biased in the left-right direction so as to abut against the corresponding rods 5b, 5c. In other words, the centers Z of the arc-shaped through holes 15c, 16c of the vibration-damping rubbers 15b, 16b are located on the center line X of the door body 1 in the front direction, while the rods are attached in a position biased in the front direction perpendicular to the opening and closing direction of the door body 1 with respect to the centers Y of the rods 5b, 5c. The rods 5b, 5c are attached in a state where their positions are adjusted so that they abut at points against the inner edges (inner peripheral edges) of the through holes 15c, 16c.

[0024] By configuring the door in this manner, when the door body 1 is a hinged door, the vibration-damping material 9 is made up of mounting brackets 15a, 16a and vibration-damping rubbers 15b, 16b, and by mounting the mounting brackets 15a, 16a offset in the viewing direction (left and right direction) relative to one of the frame plates 11a in the front-to-back direction of the auxiliary frame material 11 that constitutes the vertical stile, it becomes possible to easily mount the vibration-damping rubbers 15b, 16b in a state where the inner edges thereof abut against the rods 5b, 5c.

[0025] Of course, the present invention is not limited to the embodiments described above, and in such cases the locking device is not limited to one in which the rod protrudes upward from the upper edge of the door body to lock, as in the above embodiments, but can also be implemented in the same way with a so-called drop lock system in which the rod protrudes downward from the lower edge of the door body and locks by engaging with a locking portion provided on the floor side. Furthermore, when the vibration-proof structure of the various embodiments of the present invention is applied to a door body, it goes without saying that the door body to be applied may be either a sliding door or a hinged door. [Industrial Applicability]

[0026] The present invention can be used as a vibration-proof structure in a locking device for a door body provided for opening and closing an entrance to a building such as a house or a building. [Explanation of symbols]

[0027] 1 Door body 4 tablets 5 Rod 5a Locking portion 5b, 5c Rod of the ninth embodiment 8 Locking part 9 Vibration isolation material 9a base 9b Tip 9c through hole 9e Contact point 9th floor bent corner 9g protrusion 9h protrusion 10. Interpositional materials 11 Auxiliary frame material 11a, 11b Front and rear frame plates (face plates) 13a Locking receiving portion 14a Locking receiving portion 15, 16 Vibration isolating material 15a, 16a mounting bracket 15b, 16b Anti-vibration rubber 15c, 16c through hole Entrance E

Claims

1. A locking device provided on a door body that opens and closes an entrance, A lock body that is provided on the door body and performs locking and unlocking operations; - A rod that extends from the lock body in the direction of the lock and moves in conjunction with the lock operation of the lock body; - A locking receiving portion provided on the body side member, which is engaged with a locking portion at the tip of the rod protruding from the door body when the locking operation is performed with the lock main body, thereby restricting the opening movement of the door body; In a door body locking device comprising: When a vibration-isolating material having a through-hole through which a rod passes loosely is provided in the door body at the intermediate portion between the portion where the rod of the door body projects from the lock body, A vibration-proof structure for a door body lock device, characterized in that the vibration-proof material is attached so that the inner edge of the through hole abuts against the rod.

2. 2. The vibration-isolating structure for a locking device for a door body according to claim 1, wherein the vibration-isolating material is attached in a state in which the through hole is biased in a direction perpendicular to the direction of opening and closing movement of the door body.

3. 3. The vibration-proof structure for a locking device of a door body according to claim 1, wherein the door body is a sliding door that opens and closes in the left-right direction, and the vibration-proof material is attached in a state where the through hole is biased in the forward direction.

4. 3. The vibration-proof structure for a locking device for a door body according to claim 1, wherein the door body is a hinged door that opens and closes in the front-rear direction, and the vibration-proof material is attached in a state where the through hole is biased in the finder direction.

5. The vibration-proof structure in a door body locking device as described in claim 4, characterized in that the rod is arranged to pass through the front and rear panel panels that constitute the vertical stile of the door body in a loose fit manner, and the vibration-proof material comprises a mounting bracket attached to one of the panel panels and a vibration-proof rubber having a through hole formed therein and attached to the mounting bracket, and the mounting bracket is attached in a state where it is biased in the viewing direction relative to the panel panels.

6. A vibration-proof structure for a door body locking device as described in any one of claims 1 to 5, characterized in that the through hole is formed with a folded corner portion, and the vibration-proof material is attached biased in a direction to abut against the rod at two points that sandwich the folded corner portion in the opening and closing direction of the door body.

7. 7. The vibration-isolating structure for a door lock device according to claim 1, wherein a plurality of vibration-isolating members are provided on the rod with gaps between them.

8. 8. The vibration-proof structure for a door lock device according to claim 7, wherein the contact positions of the plurality of vibration-proof members with respect to the rod are offset in the circumferential direction of the rod.

9. 9. The vibration-proof structure for a door body lock device according to claim 1, wherein the vibration-proof material has an inner edge portion biased toward the through hole and abuts against the rod.

10. 10. The vibration-proof structure for a door lock device according to claim 9, wherein the biased inner edge is a protrusion.

11. 10. The vibration-proof structure for a door lock device according to claim 9, wherein the biased inner edge portion is formed by providing a through hole biased relative to the vibration-proof material.

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