JPH09268826A - Operation knob indicative direction change preventive device in pull-locking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely prevent the unintentional turn of an operation knob during the operation and change of the indicative direction to deteriorate the beautiful sight and function with simple constitution in a pull lock device capable of being unlocked and opening the door by pulling the operation knob to the proximal side. SOLUTION: When an operation knob 2B is pulled to the proximal side, a locking male part 2f of a locking sleeve 2C fitted to a threaded rod 2A having a head part which is screwed in the operation knob pulls down a pull-pushing body 1B in a hollow casing 1A fitted to a back side d1 of a door, and is moved to the right against the elasticity of a spring 1D by bringing a latch body 1C into slidable contact with a cam part 1g, and the latch part 1f is detached from a receiving seat 3 of a door fitting frame F, and unlocked to open the door. The threaded rod 2A having the head part is integrated with the operation knob 2B through the locking sleeve 2C by screwing a head part 2a, and the locking male part 2f is lockingly abutted on a locking hole wall 4 at an opening 1h for operation of the hollow casing 1A, and not turned to prevent the change by the unintentional turn of the operation knob 2B.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pull-type lock in which a door is unlocked by pulling an operating knob mounted on the door to the front side, and the door can be opened as it is. In the device, when the operation knob is turned unintentionally, the operability is deteriorated, the operation knob is elliptical, or a predetermined index is displayed. The present invention relates to a pointing direction change prevention device in which the appearance is not damaged by the above-mentioned unintentional rotation.

[0002]

2. Description of the Related Art As a door locking device, a door push button is pushed to release a latch to perform an unlocking operation, and thereafter,
In order to improve the inconvenience of having to perform the door opening operation by the door puller, as already disclosed by FIG. 11, the unlocking operation and the door opening operation are continuously performed by the behavior of only pulling the operation knob of the door. Pull-type lock device (Japanese Patent Publication No. 2-3596)
No. 8) is proposed. In this case, there is a hinged door D on the door mounting frame F, and the lock device main body 1 to be attached to the door back surface d ₁ on the open end side by means such as a screw, and the lock device main body 1. A screw rod 2A with a head that extends from the device body 1 to the door surface d ₃ side through a through hole d ₂ that is formed in the thickness direction of the door D, and the end portion thereof is unlocked by pulling operation. An unlocking operation section 2 having an operation knob 2B that is screwed and fastened as much as possible is provided.

The lock device body 1 is composed of a hollow casing 1A attached to the back surface d ₁ of the door, a pull pusher 1B, a latch body 1C and a spring 1D which are installed in the hollow casing 1A. The pull pusher 1B and the latch main body 1C are sequentially stacked between the top plate portion 1a and the bottom plate 1b, and the pull pusher 1B includes the sliding contact leg 1d and the opening 1e and the latch main body 1C. A latch portion 1f and a tilted cam portion 1g are formed on this. In the figure, 1h, 1i, and 1j respectively show an operation opening of the ceiling portion 1a of the hollow casing 1A and each opening of the latch body 1C and the bottom plate 1b.

Further, in the case of the illustrated example, the spring 1D is interposed between the hollow casing 1A and the latch body 1C, whereby the latch portion 1 of the latch body 1C is provided.
Inside the hollow casing 1A, the latch body 1C is elastically urged in the latching direction so that f can be hung and removed from the receiving seat 3 attached to the inner surface f of the door mounting frame F. Is pressed so that it can move back and forth toward the seat 3 side. Therefore, when the conventional pull-type lock device is used,
When it is attempted to lock the door as shown in (A), the latch portion 1 of the latch body 1C is normally moved by the spring 1D.
Since f projects outward from the seat opening 1k of the hollow casing 1A, the door D may be closed in this state,
As a result, the latch portion 1f is brought into contact with the seat 3, and the latch main body 1C moves to the right in the figure against the elastic force of the spring 1D, and then the latch main body 1C moves back, so that the door is closed and the latch portion 1f is received. It is secured by locking the seat 3.

In the state where the door is closed and locked, as shown in FIG. 11 (A), the pull pusher 1B is pushed up and held upward by the cam portion 1g of the latch body 1C in the figure, so that the headed screw rod 2A is held. Since the head portion 2a is located above the opening 1e in the figure and is engaged with the top plate portion 1m of the pull pusher 1B, the operation knob 2B is attached to the door surface d via the headed rod 2A. ₃ is held in this state, and 2b in the drawing shows a washer interposed between the door surface d ₃ and the operation knob 2B.

Further, as shown in FIG. 11 (B) from the state shown in FIG. 11 (A), if the operator holds the operating knob 2B and pulls it toward the front side, the headed screw rod 2A pulls the pull pusher 1B. However, since the pull pusher 1B is immovable in the direction parallel to the back surface d ₁ of the door and is regulated by the guide means (not shown) so as to be pulled only in the orthogonal direction,
The sliding leg 1d of the pull pusher 1B comes into sliding contact with the inclined cam 1g of the latch body 1C. As a result, the latch main body 1C is retracted against the elastic force of the spring 1D by the component force of the pulling force, and the latch portion 1f is released from the seat 3 and unlocked. Therefore, if the operation knob 2B is pulled as it is, it is opened. If the pulling force of the operation knob 2B is released after the door is opened, of course, the latch main body 1C is pushed out to the door mounting frame F side by the spring 1D, so that the pull pusher 1B is pushed back upward in the figure. The headed screw rod 2A and the operation knob 2B are returned to the same position as in the closed door lock state described above, and are held in that position.

[0007]

As described above, according to the above-mentioned pull-type locking device, there is an advantage that unlocking and opening of the door can be performed only by pulling the headed rod 2A, but as described above. In the configuration of the unlocking operation section 2, the top plate section 1e of the pull pusher 1B is pressed against the head section 2a of the headed screw rod 2A based on the elasticity of the spring 1D.
By repeatedly pulling B to unlock and open the door,
The operation knob 2B will unintentionally rotate from the initial state. As a result, since the operation knob 2B is unintentionally rotated, not only is it difficult to open and close the door by operating the operation knob 2B back and forth, but also the shape of the operation knob 2B is circular. When the operation knob 2B is formed in a columnar shape with a predetermined index or the like, or is an operation knob 2B formed in an elliptic cylinder shape or a rod shape and having a directionality, the unintentional rotation causes The pointing direction of the operating knob 2B will change,
For this reason, the aesthetic sense may be significantly impaired, and desired functions may be impaired.

In view of the deficiency of the conventional pull-type lock device, the present invention provides the unlocking operation section of the pull-type lock device according to the conventional example in the operation knob pointing direction change prevention device according to claim 1. Rather than simply screwing on the headed screw rod and operation knob, a new anti-rotation sleeve is fitted in place on the headed screw rod to ensure that the operation knob is securely fastened to the headed screw rod. In addition, by engaging the anti-rotation male portion provided on the anti-rotation sleeve with the anti-rotation hole wall formed in the lock device body described above, the unintentional rotation of the operation knob can be rotated. It is an object of the present invention to completely prevent the movement of the operating knob through the blocked rotation preventing sleeve and efficiently prevent the behavior related to the turning direction of the operating knob by adding a small number of members.

According to a second aspect of the present invention, the anti-rotation hole wall of the first aspect is set in the hollow casing of the main body of the locking device, so that the hollow casing in the immovable state and the head rod retaining rod are prevented from rotating. The engagement with the male part is ensured, whereby the object of claim 1 is smoothly achieved.

Next, in Claims 3 and 4, the rotation preventing hole walls in Claim 1 are formed in the pull pusher body and the latch body of the lock device main body, respectively, so that the lock device main body and the latch main body are respectively longitudinally and laterally. However, the screw with a head can be made shorter than that of the second aspect, and the objects of the first aspect can be smoothly achieved.

Further, according to a fifth aspect of the present invention, with respect to the structure of the unlocking operation portion, the screw rod with the head has a thin portion protruding from the head and the rod portion and the rod portion through the shoulder peripheral edge. In addition to projecting the threaded rod portion, the fixing screw is screwed into the shaft screw hole of the opening in the head without forming the rotation stopper sleeve as described in claim 1, and the screw is fixed on the head. The same purpose as in claim 1 is achieved by fixing the non-turning spacer by sandwiching it and providing the non-turning hole wall with which the non-turning spacer engages in the hollow casing of the lock device main body. Trying to achieve

[0012]

In order to achieve the above-mentioned object, in the invention according to claim 1 of the present application, there is a hinged door in the door mounting frame, and a door rear surface on the open end side is mounted. The lock device body to be attached and the end of the headed screw rod extending from the lock device body to the door surface side through the through hole of the door are screwed with the operation knob that can be unlocked by pulling operation. The unlocking operation unit is attached, the locking device body, a hollow casing fixed to the back surface of the door, a pull pusher that is installed in the hollow casing and is sequentially stacked toward the back surface of the door, A latch body having a latch portion and a cam portion, and a latch body elastically urged in the latching direction so that the latch portion can be freely attached to and detached from a seat attached to the inner surface of the door mounting frame, and a hollow It consists of a spring that pushes the inside of the casing toward the seat side so that it can move back and forth. By the operation, the pull pusher of the lock device main body is moved to the back side of the door and slidably contacts the cam portion of the latch main body, thereby retracting the latch main body against the elastic force of the spring. In a pull-type lock device in which a latch part can be detached from the seat, the unlocking operation part has a cylindrical part in a screw rod with a head for locking the lock device body through a through hole of a door. Fit the sleeve,
By screwing the headed screw rod from the operation opening of the hollow casing, the operation knob is tightened and fixed through the above-mentioned rotation-preventing sleeve, and the rotation-preventing sleeve is attached to the locking device main body. An attempt is made to provide a device for preventing a change in the pointing direction of an operating knob in a pull-type locking device, which is provided with a detent male portion that engages with the formed detent hole wall.

According to a second aspect of the present invention, in the first aspect of the present invention, the locking hole wall of the locking device main body to which the locking male part of the locking sleeve is engaged is provided with a hollow casing, a pull pusher, and The content is that it is formed on the latch body.

According to a fifth aspect of the present invention, there is provided a device for preventing pointing direction change of an operating knob. In the same pull-type lock device as in the first aspect, the unlocking operation section has a screw rod with a head and a head. It is composed of a rod part connected to this, and a thin threaded rod part projecting from the rod part via the shoulder peripheral edge.The operation knob is fastened and fixed to the shoulder peripheral part, and at the same time the head part is attached. A fixing screw is screwed into a shaft screw hole formed in the head of the screw rod, and a non-rotating spacer is sandwiched between the head, and the hollow casing of the lock device main body is provided with the non-rotating spacer. The content is that the rotation preventing hole wall of the hollow casing with which the support engages is provided.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION With respect to a pointing direction change prevention device for an operating knob in a pull type lock device according to claim 1 of the present application,
1 to 6, the basic structure of the pull-type lock device is the same as that described with reference to FIG. 11, and therefore, the same members are designated by the same reference numerals, and as described above. It is composed of a lock device body 1, an unlocking operation portion 2 and a receiving seat 3.

In the same manner as described above, the lock device main body 1 is composed of a hollow casing 1A, a pull pusher 1B having an internal stacking therein, a latch main body 1C and a spring 1D. Each of the constituent members basically has the same structure as that shown in FIG. 11 above, but the hollow casing 1A illustrated in FIG. 3 has this on the back surface d ₁ of the door D as shown in FIG. The mounting plate 1n for mounting with screws or the like is shown, and 1p is the mounting hole. Further, in FIG. 3, 1q is a hollow casing 1A.
The bottom plate 1b is attached by engaging the locking projections 1r of the bottom plate 1b shown in FIGS. 3D and 3E with the locking groove recessed at the lower end opening edge of the bottom plate 1b. 1s disclosed in the same figure (B) has the pull pusher 1B projecting from the front and rear side walls 1t of the hollow casing 1A so that the pull pusher 1B does not move left and right in the drawing and only vertical movement is allowed. Each of them shows a pair of guide ridges, and 1u shows a locking portion that restricts the latch body 1C from being pulled out to the receiving seat 3 side.

In the hollow casing 1A, a guide cavity for moving the latch body 1C left and right in the drawing between the rib body 1v projecting downward from the ceiling portion 1a and the bottom plate 1b. 1w is opened, and then, as the above-mentioned pull pusher 1B, one different from the conventional example of FIG. 11 is illustrated by FIG. That is, the slide contact leg 1d of the pull pusher 1B has a slidable contact surface formed by slanting the lower end thereof, as understood from FIGS. 4 and 1, which is the same as that of the latch body 1C. The pair of guide plates 1x shown in FIG. 4 are slidably mounted on the oblique cam portion 1g so as to be slidable between the guide ridges 1s of the hollow casing 1A. The vertical movement of the pull pusher body 1B orthogonal to the door back surface d ₁ is restricted by this.

Further, the above-mentioned latch body 1C is shown in FIG.
In comparison with the above-mentioned conventional example, the cam part 1 disclosed in FIG.
g is formed only in one place, and the latch portion 1f
Is different in that a pair of interlocking screw holes 1y and 1z, which are coaxially screwed, are provided in the width direction of the door D at the lower end and the end on the cam portion 1g side. The interlocking screw holes 1y and 1z are, as disclosed in FIG.
When it is desired to attach the operation knob 2B to a position far away from the open end side of the door D, one end of the interlocking shaft rod P is screwed into the above-mentioned interlocking screw hole 1y in the lock device body 1 and the other end is screwed. In the lock device main body 1 without the unlocking operation part 2 attached to the back surface d ₁ of the door 3 in the vicinity of the seat 3, and is used by being screwed into the interlocking screw hole 1z. . Thus, by pulling the operation knob 2B, the latch main body of the other lock device main body 1 is moved to the right in the drawing via the interlocking rod P, thereby enabling unlocking and door opening. In the figure, G indicates a guide plate of the interlocking rod P.

Further, a spring 3 as another component of the lock device main body 1 is also interposed between the hollow casing 1A and the latch main body 1C, and in the illustrated example, a spring 1D which is a coil spring is provided. The latch main body 1C is fitted in the protruding cylindrical portion 1z 'provided with the interlocking screw hole 1z.
Therefore, even in the case of the lock device body 1 described above, the pull pusher 1B of the lock device body is operated by operating the operation knob 2B in the unlocking operation portion 2 substantially in the same manner as the conventional example.
Moves toward the back surface d ₁ of the door, and the sliding contact leg 1d slides into contact with the cam portion 1g of the latch body 1C.
C retreats against the elasticity of the spring 1D, whereby
The latch portion 1f is released from the locked state with the seat 3.

In the present invention, while the lock device body 1 has substantially the same structure as the conventional example, the structure of the unlocking operation section 2 for interlocking the lock device main body 1 is as follows. It's different. That is, not only is it composed of the headed screw rod 2A and the operation knob 2B up to now, but a rotation preventing sleeve 2C which is a new member is adopted, which is shown in FIG. In the present embodiment, a cylindrical portion 2e through which the through-shaft hole 2d penetrates and, in this embodiment, a rotation stopping male portion 2f formed by a rectangular tube, an elliptic tube or the like at its upper end.

As shown in FIGS. 1 and 2, the cylindrical portion 2e of the detent sleeve 2C has a headed screw rod 2A.
By being inserted into the through hole d _{2 of the} door D from the lock device main body 1 and rotating the head 2a of the headed screw rod 2A from the operation opening 1h of the hollow casing 1A. The operation knob 2B is fastened and fixed to the tip end of the threaded rod 2A with a portion extending from the shaft hole 2d via the anti-rotation sleeve 2C.

Further, in the present invention, the anti-rotation male portion 2f of the anti-rotation sleeve 2C of the unlocking operation portion 2 is
By being installed in the anti-rotation hole wall 4 formed in the lock device main body 1, rotation around the axis of the anti-rotation sleeve 2C is prevented. Here, FIG.
In the embodiment of FIG. 2, the anti-rotation male portion 2f is bulged in the shape of a rectangular tube at the upper end of the anti-rotation sleeve 2C in the shape of a square tube in the hollow casing 1A. In addition, in the operation opening 1h, a pair of wall surfaces arranged side by side in the upper and lower sides of the drawing form a detent hole wall 4, and the detent hole wall 4 is engaged with the pair of side surfaces of the detent male portion 2f. By hitting, the non-rotating sleeve 2C
Is prevented from rotating.

Therefore, if the headed screw rod 2A is screwed by a screwdriver or the like as described above, the head portion 2a is rotated by the male portion 2 for preventing rotation.
The operation knob 2B is press-contacted with f, and the other end surface of the operation knob 2B is press-contacted with the rotation preventing sleeve 2C, so that the operation knob 2B is firmly fixed to the headed screw rod 2A and the rotation preventing sleeve 2C, and the rotation prevention Since the sleeve 2C does not rotate, the operation knob 2B is prevented from rotating unintentionally.

Here, in the illustrated example, the anti-rotation male portion 2f of the anti-rotation sleeve 2C is brought into contact with the top plate portion 1m of the pull pusher 1B, whereby the pull operation of the operation knob 2B causes The pull pusher 1B is the back surface d of the door.
_It is pulled to the ₁ side and the lower latch body 1C is moved to the right side in the figure as described above, and the latch portion 1f is moved.
Can be detached from the seat 3.

The detent hole wall 4 with which the detent male portion 2f of the detent sleeve 2C abuts may be formed in the lock device main body 1. Therefore, as shown in claim 2 of the drawings, Even if the operation opening 1h of the hollow casing 1A is not set, the opening 1e provided in the top plate portion 1m of the pull pusher body 1B as described in claim 3 to
As shown by the phantom line in (A), the rotation stopping male portion 2f engages with the rotation preventing hole wall 4, and further, as shown in FIG. 5 (B), the rotation stopping is applied to the opening 1i of the latch body 1C. Male part 2
It is also possible to provide a detent hole wall 4 for f,
At this time, the pull pusher 1B moves up and down as shown in the drawing, and the latch body 1C moves left and right.
It is possible to prevent the rotation of the operation opening 1h, the opening 1e, 1i, 1j for operation, adjust the setting position of the operation knob 2B and consider the left and right movement of the latch body 1C. Therefore, it is preferable to form a long hole having a large length in the left-right direction.

In FIGS. 1 and 2, reference numeral 2g denotes a through hole d ₂ in the door D, which is a pull latch insert driven into the door surface d ₃ side, and has a rotation preventing sleeve 2C. I am trying to wear it, but of course,
Such a member may not be used. Here, it is preferable that the ceiling portion 1a of the hollow casing 1A is set higher than the top end of the head portion 2a of the screw rod with head 2A. It is possible to prevent the articles stored in E from collapsing and directly hitting the head 2a, which causes the door to open unintentionally. Incidentally, when the male anti-rotation portion 2f is located at the upper end of the anti-rotation sleeve 2C, the male anti-rotation portion 2f pushes the pull pusher 1B. As in the example, the head portion 2a is pressed against the top plate portion 1m of the pull pusher 1B, and the operation knob 2B is pushed by the pull operation.

Next, referring to FIG. 7, there is provided a pointing direction change prevention device according to claim 5, which can achieve the same purpose as the above.
If this is described in detail with reference to the embodiment of FIG. 10, the locking device main body 1 in the pull-type locking device in this case is essentially the same as that of the above-mentioned conventional example and that disclosed in FIGS. 1 and 2. Of course, the same members are denoted by the same reference numerals, and their configurations and operations are substantially the same as the above-mentioned contents. The unlocking operation unit 2 that exerts the action of will be described in detail with reference to the embodiment of FIG.

In this unlocking operation section 2, the screw rod 2A with a head thereof has a head portion 2a, a rod portion 2h connected to this, and a rod portion 2h of the head portion 2a as clearly shown in FIGS. From tip to shoulder edge 2
and a thin threaded rod portion 2j coaxially projecting via i, and a shaft screw hole 2k is formed from the head portion 2a to the rod portion 2h, and this cuts a turning cut groove 2m of the head portion 2a. It is opened on the top surface.

Further, the unlocking operation section 2 is provided with a headed screw rod 2A as described above, a rotation stopper spacer 2D, and a fixing screw 2E as components other than the operation knob 2B. In the embodiment shown in FIG. 9, the non-rotation spacer 2D is formed of a quadrangular plate, and the through hole 2n is provided in the axial center thereof. Therefore, from the operation opening 1h of the hollow casing 1A, by means of a screwdriver or the like, the turning kerf 2
By using m, the operation knob 2B can be fastened and fixed to the shoulder peripheral edge 2i by screwing the headed screw rod 2A, and in the embodiment of FIG. The above-mentioned tightening is done.

Then, the fixing screw 2E which is inserted from the above-mentioned operation opening 1h into the through hole 2m of the anti-rotation spacer 2D.
Is screwed into the shaft screw hole 2k of the headed rod 2A. At this time, the detent spacer 2D is clamped in the detent hole wall 4a of the hollow casing 1A of the lock device body 1 and the The movement is blocked, and the operation knob 2B is adjusted to have a predetermined pointing direction, and the detent spacer 2D is fixed on the head 2a by fastening the fixing screw 2E. As a result, the non-rotating spacer 2 integrated with the headed rod 2A
As a result, D does not rotate, and as a result, even if the operation knob 2B is pulled and the door D is repeatedly unlocked and opened, the operation knob 2B turns unintentionally and the pointing direction changes. It will not turn over. The pull-type locking device shown in the unlocked state of FIG. 8 is different from the case of FIG. 7 in that the configuration of the locking device body 1 is substantially the same as that illustrated in FIG. There is.

[0031]

Since the present invention can be configured as described above, according to claim 1, of the locking device main body and the unlocking operation part constituting the pull-type locking device, the latter is provided with a head. Not only the screw rod and the operating knob, but also the anti-rotation sleeve provided with the anti-rotation male part is properly fitted thereto, and the anti-rotation male part is provided with the anti-rotation hole wall on the lock device body. Therefore, even if the operation knob is repeatedly unlocked and opened by pulling the operation knob, the operation knob does not rotate unintentionally, and it is guaranteed that the operation knob is always kept in the specified direction. , While maintaining the aesthetics that comes from the distribution of the operating knobs on the door,
It can be safely adopted even in the case of an operation knob in which a functional hindrance is caused by an unintentional change of the pointing direction.

According to the second to fourth aspects, since the detent hole walls in the first aspect are respectively formed in the hollow casing, the pull pusher body and the latch body in the lock device main body, in any case. It is possible to obtain the degree of freedom in designing that the effect described in the above claims is exerted and the setting position of the rotation preventing wall is changed according to various specifications.

In the case of claim 5, in addition to the detent sleeve added in claim 1, a detent spacer and a fixing screw are additional constituent members, and the headed screw rod has a rod portion, Since the shoulder peripheral edge, the thin screw rod portion, and the shaft screw hole are formed, and the detent spacer is set in the hollow casing of the lock device main body, this is also different from that of claim 1, Although the number of constituent members will be increased, a ready-made member can be used, and the same effect as that of claim 1 can be obtained for each operation knob.

[Brief description of drawings]

FIG. 1 shows a pull-type locking device according to claim 1, which is provided with a device for preventing a change in the pointing direction of an operating knob according to the present invention,
(A) is a plan view in the locked state, and (B) is a longitudinal side view in the locked state showing an example of use.

FIG. 2 is a longitudinal side view of the pull-type locking device in which the operating knob is pulled to unlock from the locked state shown in FIG. 1B.

3 shows a hollow casing which is one member of the lock device main body in the pull-type lock device of FIG. 1, (A) is a side view with a bottom plate removed, (B) is a vertical side view of (A), FIG. (C) is a cross-sectional view taken along the line CC of (A), (D) is a plan view of the bottom plate, and (E) is a side view of the bottom plate.

FIG. 4 shows a pull pusher which is one member of the lock device main body in the pull type lock device of FIG. 1, and FIG.
(B) is a sectional view taken along the line BB of (A), and (C) is (A).
Is a side view, and (D) is a rear view of (A).

5A and 5B show a latch main body which is one member of the same locking device main body, in which FIG. 5A is a side view thereof, FIG. 5B is a front view 4, FIG. 5C is a longitudinal side view, and FIG. It is a side view showing the other example of use of the device.

FIG. 6 shows a detent sleeve that is one member of an unlocking operation portion of the pull-type locking device, in which (A) is a plan view and (B) is a partially cutaway side view.

FIG. 7 shows a pull-type locking device according to claim 5 of the present invention, (A) is a plan view of a locked state according to an example of use thereof,
(B) is a vertical side view of (A).

FIG. 8 is a vertical cross-sectional side view of a different type pull-type locking device when the operating knob is pulled to be unlocked from the same locked state as in FIG. 7B.

FIG. 9 is an exploded side view in which a screw rod with a head, a detent spacer and a fixing screw in the unlocking operation portion of the pull-type locking device are partially cut away.

FIG. 10 is a plan view showing the headed screw rod of FIG. 9;

FIG. 11 shows a usage example of a pull-type locking device which is a conventional example,
(A) is a vertical side view in the locked state, and (B) is a vertical side view in the unlocked state of (A).

[Explanation of symbols]

1 Locking device main body 1A Hollow casing 1B Pull pusher 1C Latch main body 1f Latch part 1g Cam part 1h Operation opening 2 Unlocking operation part 2A Head screw rod 2B Operation knob 2C Non-rotating sleeve 2D Non-rotating spacer 2E Fixed screw 2a Head part 2e Cylindrical part 2f Non-rotating male part 2h Rod part 2i Shoulder peripheral edge 2j Thin threaded rod part 2k Shaft screw hole 3 Receptacle 4 Detent hole wall 4a Detent hole wall of hollow casing D Door d ₁ Door back surface d ₂ Through hole d ₃ Door surface F Door mounting frame

Claims (5)

[Claims] 1. A lock device main body attached to the back surface of the door at the open end side of a door with a hinged door mounting frame, and from the lock device main body to the door front surface side through a through hole of the door. The extended end of the screw rod with a head is provided with an unlocking operation section in which an operation knob that can be unlocked by a pull operation is screwed and fastened, and the locking device body is fixed to the back surface of the door. A hollow casing, a pull pusher that is installed in the hollow casing and is sequentially stacked toward the back side of the door, and a latch body having a latch portion and a cam portion,
The latch body is elastically urged in the latching direction so that it can be hung and removed from the seat attached to the inner surface of the door mounting frame, and the hollow casing can be moved back and forth toward the seat side. The pull pusher of the lock device main body is moved to the back side of the door by the pulling operation of the operation knob, and the slide main body is slidably contacted with the cam portion of the latch main body. It retreats against elasticity, and by this,
In the pull-type lock device in which the latch part is detachable from the seat, the unlocking operation part is a detent that is inserted into the cylindrical part of the screw rod with the head from the lock device body to the through hole of the door. The operation knob is fitted and the screw with head is screwed from the operation opening of the hollow casing to tighten and fix the operation knob through the rotation preventing sleeve, and the rotation preventing sleeve. An anti-turning device for indicating an orientation of an operating knob in a pull-type locking device, wherein a locking male part that engages with a locking hole wall formed in the locking device body is provided in the locking device. 2. The operating knob in the pull-type locking device according to claim 1, wherein the locking hole wall of the locking device body with which the locking male portion of the locking sleeve is engaged is formed in a hollow casing. Orientation change prevention device. 3. The operation of the pull type locking device according to claim 1, wherein the locking hole wall of the locking device body with which the locking male part of the locking sleeve is engaged is formed in the pull pusher. Directional direction change prevention device for knobs. 4. The operation knob of the pull-type lock device according to claim 1, wherein a locking hole wall of the locking device body with which the locking male portion of the locking sleeve is engaged is formed in the latch body. Orientation change prevention device. 5. A lock device main body attached to the back surface of the door on the open end side of the door attachment frame, and a lock device main body from the lock device main body to the door front surface side through a through hole of the door. The extended end of the screw rod with a head is provided with an unlocking operation section in which an operation knob that can be unlocked by a pull operation is screwed and fastened, and the locking device body is fixed to the back surface of the door. A hollow casing, a pull pusher that is installed in the hollow casing and is sequentially stacked toward the back side of the door, and a latch body having a latch portion and a cam portion,
The latch body is elastically urged in the latching direction so that it can be hung and removed from the seat attached to the inner surface of the door mounting frame, and the hollow casing can be moved back and forth toward the seat side. The pull pusher of the lock device main body is moved to the back side of the door by the pulling operation of the operation knob, and the slide main body is slidably contacted with the cam portion of the latch main body. It retreats against elasticity, and by this,
In the pull-type locking device in which the latch portion is detachable from the seat, the unlocking operation portion has a screw rod with a head, a rod portion connected to the head rod, and a peripheral edge of the rod from the rod portion. And a thin threaded rod portion protruding from the head, the operation knob is fastened and fixed to the peripheral edge of the shoulder, and a screw is fixed to a shaft screw hole formed in the head of the headed screw rod. Is screwed on and the detent spacer is clamped to the head, and the detent hole wall of the hollow casing with which the detent spacer is engaged is provided in the hollow casing of the locking device body. A device for preventing pointing direction change of an operating knob in a pull type lock device.