WO2012020639A1

WO2012020639A1 - Locking device

Info

Publication number: WO2012020639A1
Application number: PCT/JP2011/066897
Authority: WO
Inventors: 忠志安斎; 玄一佐藤
Original assignee: スガツネ工業株式会社
Priority date: 2010-08-09
Filing date: 2011-07-26
Publication date: 2012-02-16
Also published as: JP5238084B2; JPWO2012020639A1

Abstract

A locking device comprises: a locking case that is attached to a cover of a cabinet; a locking bolt that is disposed in the locking case and is movable in the forward and backward directions; a spring that urges the locking bolt in such a way that the locking bolt protrudes from the inside of the locking case and thereby locks the cover in such a way that the cover cannot be separated from the main body of the cabinet; and a key that includes a cam for displacing the locking bolt from a locking position to an unlocking position against the urging force of the spring. The locking case is attached in such a way that the locking case is exposed at the outer surface of the cover. The key comprises a shaft part that is above and below the cam and is rotatably held in a support hole formed in the upper and lower walls of the locking case, and the key is therefore supported by the locking device instead of being supported by the cover of the cabinet.

Description

Locking device

The present invention relates to an improvement of a locking device for locking a lid of an opening / closing object having a lid (or door) such as a building, cabinet, or container to a main body of the opening / closing object.

An example of a prior art of a locking device that locks the lid of an openable / closable object on the main body of the openable / closable object is disclosed in Japanese Utility Model Laid-Open No. 3-92279, which is disclosed in Patent Document 1. A case 2 attached to the main body, a locking bolt (locking body) 9 movably disposed in the case 2, and a lid (opening / closing body) 1 disposed between the case 2 and the locking bolt 9 is mounted on the main body ( In a state of being closed by the fixed frame body 5, the locking bolt 9 is urged so as to protrude from the case 2, and the spring 1 locks the lid 1 so as not to separate from the main body 5. This locking tool includes a key (handle bar) 10 for displacing the locking bolt 9 from the locking position to the unlocking position or from the unlocking position to the locking position against the urging force of the spring 7. The key 10 includes a cam 14 for inserting the shaft rod into the case 2 and displacing the locking bolt 9 in the unlocking direction (see Patent Document 1).

As shown in FIGS. 1 and 3 of Patent Document 1, this prior art locking device has a lid 1 attached to a lid 1 so that the key 10 can be stably rotated in the case 2 of the locking device. It was necessary to have a bearing cylinder (guide cylinder) 4 extending in the thickness direction and guiding and bearing the shaft rod of the key 10.

For this reason, the locking device according to the prior art can be effectively used for an opening / closing object having a thin lid, although the lid 1 can be effectively applied to an opening / closing object having a thick lid. This is difficult, and requires a key rotation support means on the lid side, resulting in a complicated structure.

Japanese Utility Model Publication No. 3-92279

The problem to be solved by the present invention can be effectively applied to an opening / closing object having a thin lid (or door), and provides a locking device that does not require a key support means on the lid side. It is in.

The problem-solving means of the present invention includes a locking case attached to either a lid (or door) or a main body of an opening / closing object, a locking bolt disposed in the locking case so as to be movable back and forth, and the locking bolt to the locking case. A key that includes a spring that urges the locking bolt so as to protrude from the lock, and a key that includes a cam for displacing the locking bolt from the locking position to the unlocking position against the urging force of the spring. The present invention provides a locking device characterized in that it has shaft flanges above and below the cam, and the upper and lower shaft flanges are rotatably held by a support portion of the locking case.

In the problem-solving means of the present invention, the support portion that supports the upper and lower shaft flange portions of the key can be provided at an arbitrary position such as an intermediate wall of the lock case. In particular, these support portions are provided in the lock case. It is preferable to be provided on the upper and lower walls.

In the problem-solving means of the present invention, the locking bolt may have a key through-hole through which the shaft shaft portion of the key passes. In this case, the key through-hole interferes with the advancement and retraction of the locking bolt. In order to avoid this, it is preferable to use a long hole.

Further, in the problem solving means of the present invention, the support portion that supports the upper shaft flange portion may be formed continuously with a cam through hole through which the cam of the key passes.

According to the present invention, the key for locking and unlocking the locking tool is not supported by the opening / closing object, but is supported by the locking case of the locking tool, so that the key can be rotated in a stable state as in the prior art. It is not necessary to maintain a sufficient thickness on the lid of the opening / closing object so that the opening / closing object can be easily applied to an opening / closing object having a thin lid. Since there is no need to provide a supporting structure, the opening / closing object is not required to have a complicated structure, and can be applied to an opening / closing object of an appropriate form.

The cabinet in which the locking tool of this invention is used is shown, The figure (A) is a front view of the cabinet which a part is cut away, The figure (B) is the cabinet in which one locking tool is attached. It is an enlarged front view of a part. The locking tool by one embodiment of the present invention is shown, The figure (A) is the perspective view of the locked state, The figure (B) is the perspective view of the unlocked state, The figure (C), Although it is in a locked state, the perspective view of the state which removed the key and the figure (D) are the exploded perspective views of the whole containing a key. 2 shows the locked state of the locking device of FIG. 2 as seen from various directions. FIGS. 1A to 1E are a front view, a top view, a bottom view, a left side view, a right side view, and the same drawing, respectively. (F) is a sectional view taken along line FF in FIG. 2 shows the unlocked state of the locking device of FIG. 2 viewed from various directions, and FIGS. 1A to 1E are a front view, a top view, a bottom view, a left side view, and a right side view, respectively. . FIG. 2 shows the locked state of the locking device shown in FIG. 2, but shows the state where the key is removed as viewed from various directions. FIGS. (A) to (E) are a front view, a top view, a bottom view and a left side, respectively. It is a side view and a right side view. 2 shows the locking case of the locking device in FIGS. 2 (A) to (F), which are respectively a front view, top view, bottom view, left side view, right side view, and F- It is F line sectional drawing. The locking bolt of the locking tool of FIG. 2 is shown, and FIGS. 1A to 1F are a front view, a top view, a bottom view, a left side view, a right side view, and a rear view, respectively. FIGS. 2A to 2F are a front view, a top view, a bottom view, a left side view, a right side view, and a rear view, respectively. FIG. 2 shows the relationship between the opening and closing object and the locking device when the locking device of FIG. 2 is in a locked state, and FIGS. (A) to (C) are a top view and a longitudinal sectional view of FIG. It is sectional drawing of CC line of the figure (A). FIG. 2 shows the relationship between the opening / closing object and the locking device when the locking device of FIG. 2 is in a semi-unlocked state. FIGS. (A) to (C) are a top view and a longitudinal section of FIG. FIG. 3 is a cross-sectional view taken along the line CC of FIG. FIG. 2 shows the relationship between the opening and closing object and the locking device when the locking device of FIG. 2 is in the unlocked state, and FIGS. (A) to (C) are a top view and a longitudinal sectional view of FIG. FIG. 4C is a cross-sectional view taken along the line CC of FIG. FIG. 2 shows the relationship between the opening and closing object and the locking device when the key is removed, although the locking device of FIG. 2 is in the locked state, and FIGS. FIG. 2A is a longitudinal sectional view of FIG. 1A, and a sectional view taken along the line CC of FIG. When the locking device of FIG. 2 is in the locked state, the semi-unlocked state, the unlocked state, and the locked state with the key removed, the relationship between the opening / closing object and the locking device is cut at a position different from that in FIGS. FIGS. 9A to 9D are sectional views taken along lines 13A-13A, 13B-13B, 13C-13C, and 13D-13D of FIGS. 9A to 12A, respectively. FIG.

For example, as shown in FIGS. 1 and 9 to 12, the locking device 10 of the present invention is attached to the four corners of the lid 1 </ b> C in order to lock the lid 1 </ b> C on the main body 1 </ b> B of the cabinet 1 that is an opening / closing object. When the locking device 10 is locked after the lid 1C is closed (see FIGS. 9 and 12), the lid 1C functions to lock the lid 1C without being able to move away from the main body 1B.

One embodiment of the locking device 10 of the present invention is shown in FIGS. 3 to 5, and this locking device 10 is either a lid 1C (or door) or a main body 1B of a cabinet 1 which is an opening / closing object, In the illustrated embodiment, a locking case 20 to be attached to the lid 1C, a locking bolt 30 disposed in the locking case 20 so as to be movable back and forth, an inner bottom 20RS of the locking case 20 and a locking bolt 30 in the locking case 20 are shown. A spring 40 that is disposed between the rear end 30RE and urges the locking bolt 30 to protrude from the locking case 20 in a state where the lid 1C is closed to the main body 1B and locks the lid 1C so as not to separate from the main body 1B. And a key 50 including a cam 52 for displacing the locking bolt 30 from the locking position to the unlocking position against the urging force of the spring 40 and from the unlocking position to the locking position.

As shown in FIG. 6, the locking case 20 has a substantially rectangular case main body 22 and an upper wall 22WU with a flange 22WUF provided on the upper surface of the case main body 22. The case main body 22 The back surface and the right side surface are closed by walls 22WF, 22WB, and 22WRS, and the left side surface is open. The inner surface of the right wall 22WRS constitutes the inner bottom 20RS of the locking case 20.

Further, the locking case 20 has retaining

claws

26F and 26B extending obliquely upward outward on the front and rear walls 22WF and 22WB, respectively. These retaining

claws

26F and 26B are respectively shown in FIG. 9B. 10 (B), FIG. 11 (B), and FIG. 12 (B), the widened tip engages the lower surface of the lid 1C to prevent the locking case 20 from coming off, and at the same time, the upper surface of the lid 1C. The locking case 20 is held by the lid 1C together with the flange 22WUF of the upper wall 22WU that engages with the lid 1C. The locking case 20 has holes (or recesses) 26FH and 26BH in which the retaining

claws

26F and 26B can be accommodated in the front and rear walls 22WF and 22WB corresponding to the retaining

claws

26F and 26B. Have. These holes 26FH and 26BH are formed so that the retaining

claws

26F and 26B are elastically folded when the locking case 20 passes through the mounting hole 1CH (see FIG. 9C) of the lid 1C, so that the locking case 20 is covered with the lid 1C. It has a function of allowing the through hole 1CH to pass through.

In addition, the locking case 20 has bolt removal prevention guide holes (or recesses) 28F and 28B (see FIGS. 6A and 6F) on the front and back walls 22WF and 22WB at positions close to the opening 22H side. The bolt retaining

guide holes

28F and 28B have a function of guiding the locking bolt 30 when the locking bolt 30 moves forward and backward while being retained from the locking case 20, as will be described later.

Further, as shown in FIGS. 2C and 2D, the locking case 20 has a key insertion hole 22WUH in the upper wall 22WU that allows a cam 52 of a key 50 described later to be inserted. Will be described later.

As shown in FIGS. 2D and 7, the locking bolt 30 has a form that is slidably accommodated in the locking case 20. More specifically, the locking bolt 30 includes corresponding surfaces 30WF, 30WB, 30WU, which slidably engage the inner surfaces of the walls 22WF, 22WB, the upper wall 22WU, and the lower wall 22WL on the front and rear surfaces of the locking case 20, respectively. 30WL, and has a lock piece 32 for locking the lid 1C to the main body 1B at the tip thereof (the end opposite to the side facing the inner bottom 20RS of the locking case 20).

In addition, the locking bolt 30 is particularly formed as shown in FIGS. 2 (D), 7 (A), 9 (B), 10 (B), 11 (B) and 12 (B). A cam engaging groove 34 that allows the cam 52 of the key 50 described later to rotate while being engaged is provided. The relationship between the key 50 and the locking bolt 30 will be described in detail later in connection with the operation of the locking tool.

Further, the locking bolt 30 has cutout

elastic claws

36F and 36B engaged with the retaining

guide holes

28F and 28B described above in relation to the locking case 20, and these

elastic claws

36F and 36B are locked. When the bolt 30 is inserted into the locking case 20, it is squeezed. When these

elastic claws

36 F and 36 B reach the retaining guide holes 28 F and 28 B of the locking case 20, they are expanded by the elasticity and the locking case 20 It is guided while being retained within the retaining

guide holes

28F and 28B.

As shown in FIGS. 9B, 10C, 10B, 11C, 11B, 12C, and FIGS. 13A to 13D, The spring 40 is disposed between the inner bottom 20RS of the locking case 20 and the rear end 30RE of the locking bolt 30. On the locking bolt 30 side, the spring receiving recess 30R of the locking bolt 30 (FIG. 7E), FIG. 9 (C)).

2 (D), FIG. 3 (F), FIG. 8 and FIGS. 13 (A) to (C), the key 50 is placed on the upper wall 22WU and the lower wall 22WL of the locking case 20 above and below the cam 52. Each of the support portions in the form of holes provided (hereinafter referred to as support holes in the embodiment) 22WUH, 22WLH has

shaft flange portions

54U, 54L that are rotatably held.

As shown in FIGS. 2 (D), 3 (F), and 5 (B), the support hole 22WUH on the upper wall 22WU side is formed continuously with the cam through hole 22CH through which the cam 52 of the key 50 passes. The key insertion hole 22KH is configured.

Further, the locking bolt 30 includes a bottom wall 30B having a through hole 30BH through which the shaft flange portion 54L below the key 50 passes, and the through hole is formed as shown in FIGS. 11B and 12B. The long hole is formed so as not to interfere with the advance and retreat of the locking bolt 30.

As shown in FIGS. 9B, 10B, and 11C, the key 50 is inserted into the locking case 20 and the locking bolt 30, and the cam 52 of the key 50 is connected to the

shaft flanges

54U and 54L. When rotating in the counterclockwise direction as viewed in FIG. 9A around the center, the cam pressing surface 34P (see FIG. 10B) of the cam engaging groove 34 of the locking bolt 30 is pressed against the spring 40. While compressing the spring 40, the locking bolt 30 is pulled into the interior of the locking case 20 to displace the locking bolt 30 in the unlocking direction (see displacement from FIG. 9 to FIG. 10). In this manner, when the cam 52 is rotated until the locking bolt 30 is completely unlocked, the positioning recess 52R of the cam 52 and the corner 34C of the cam engagement groove 34 are engaged with each other and completely unlocked. The locked state is maintained (see FIG. 11B). When the locking bolt 30 is retracted, the shaft flange portion 54L of the key 50 passes through the through-hole 30BH in the form of a long hole of the locking bolt 30, so that it does not interfere with the retracting of the locking bolt 30. In the cabinet of FIG. 1, the lid 2 can be opened when the four locking devices 10 are unlocked.

When the key 50 is rotated clockwise from the position shown in FIG. 11 to lock the lid 2 after closing the lid 2, the locking bolt 30 passes through the position shown in FIG. As a result, the locking piece 32 of the locking bolt 30 moves forward so as to protrude from the locking case 20, and the locking bolt 30 is returned to the locking position shown in FIG. At this position, the key 50 is extracted from the locking case 20 and the locking bolt 30 to lock the lid 2.

As shown in FIG. 13, the key 50 supports the upper and lower

shaft flange portions

54U and 54L of the cam 52 rotatably in support holes 22WUH and 22WBH provided in the upper wall 22WU and the bottom wall 22WL of the locking case 20, respectively. Therefore, the locking / unlocking operation of the locking device 10 can be performed stably, but since the stable support of the key 50 is performed within the locking device 10, an opening / closing object is provided as in the prior art. It can be seen that it is not necessary to provide a structure for stably supporting the key on the lid of the lid, and it can be applied to a lid having a small thickness.

In the locking device of the present invention, the key for locking and unlocking the locking bolt is stably supported not on the opening / closing object side but on the locking device side, so that it can be easily applied to an opening / closing object having a thin lid. In addition, it is not necessary to provide a structure for supporting the key of the locking tool on the opening / closing object side, a complicated structure is not required for the opening / closing object, and the industrial applicability is high.

1 cabinet 1B body 1C lid (or door)
1CH Mounting hole 10 Locking tool 20 Locking case 20RS Inner bottom 22 Substantially rectangular case body 22H Opening 22KH Key insertion hole 22CH Cam through hole 22WU Upper wall 22WUF 鍔 22WF Front wall 22WB Rear wall 22WL Lower wall 22WUH, 22WLH Key support hole 26 , 26B Retaining claw 26FH, 26BH Hole (or recess)
28F, 28B Bolt retaining guide hole 30 Locking bolt 30B Bottom wall 30BH Key through hole in the form of a long hole 30WF, 30WB, 30WU, 30WL Front wall, back wall, upper wall, lower wall of the locking bolt 30R Spring receiving recess 30RE Rear End 32 Lock piece 34 Cam engagement groove 34C Corner 34P

Cam pressing surface

36F, 36B Cutout elastic claw 40 Spring 50 Key 52 Cam

52R Positioning recess

54U, 54L Vertical shaft flange

Claims

A locking case attached to either the lid (or door) or the main body of the openable / closable object, a locking bolt disposed in the locking case so as to freely advance and retract, and the locking bolt is biased so as to protrude from the locking case. A locking device comprising a spring and a key including a cam for displacing the locking bolt from the locking position to the unlocking position against the urging force of the spring, wherein the key is pivoted vertically on the cam. A locking device comprising a collar, wherein the upper and lower shaft collars are rotatably held by a support part of the locking case.
2. The locking device according to claim 1, wherein the support portion is provided on upper and lower walls of the locking case.
3. The locking device according to claim 1 or 2, wherein the locking bolt has a key through hole through which a shaft shaft portion of the key passes.
4. The locking device according to claim 3, wherein the key through hole is in the form of a long hole so as not to interfere with the advancement and retraction of the locking bolt.
5. The locking device according to claim 1, wherein the support portion that supports the upper shaft flange portion is formed continuously with a cam through-hole through which the cam of the key passes. Locking device characterized by that.