JP2009127342A - Button lock - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a button lock suitable for a lock of a mailbox or the like, excelling in operability, compact, lightweight and easy to assemble. <P>SOLUTION: The button lock includes one or more lock pins 40 holding specific password information and pressed and energized upward; a lock pin presser 28; a lock plate 30 capable of advancing/retreating in linkage with the locking/unlocking operation of an operating lever; and a reset block 29 having a through-hole 42 and movable in the same direction as the lock plate. The lock pin includes an engaging part that can be engaged with and disengaged from a hook hole of the lock plate, and a locking piece 70 that can be engaged with an opening edge part of a through-hole 39 of the lock pin presser and an engaging part 46 of the reset block. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention is suitable, for example, before the lock of a mail box, reduces the number of parts, can be assembled rationally and easily, can be manufactured in a small, lightweight, inexpensive and easy manner, and its locking and unlocking operation is easy and reliable. It relates to a button lock that can be used.

For example, code locks and padlocks are frequently used as locks for mailboxes. However, these locks are inexpensive, but their appearance is poor, their locking and unlocking operations are generally troublesome, and their protective ability is uneasy.
For this reason, recently, a cover of a mailbox is provided with a button lock, the button lock has a plurality of push buttons functioning as specific password information, and these push buttons are operated and unlocked according to the password information. There is something like that. (For example, refer to Patent Documents 1 and 2).

  However, since the lock is provided with secret information on a specific push button, or the push button is used separately for unlocking and non-unlocking, there is a limit to the secret information or protection capability, and it is accurate. There were problems such as being unable to lock and unlock.

  As a button lock that solves such a problem, a plate-shaped tumbler is accommodated in a plurality of push buttons so as to be movable up and down, and the tumbler is formed of a deformed plate body in which various grooves are formed. When the password is not identified or not identified, it is accommodated in an upright or inverted state in the case frame, and the tumbler is inserted into the slit of the key plate slidably disposed in the case frame, and the push button The tumbler slit can be engaged with and disengaged from the key plate slit through the pressing operation of the key plate, and the handle can be operated to slide the key plate during the engagement so that it can be unlocked. (For example, see Patent Documents 3 and 4).

  However, the button lock has a deformed tumbler and is difficult to incorporate, and it is assembled upright or inverted depending on whether it is required or not, which makes it difficult to assemble. Therefore, there was a problem that it was annoying.

  In order to solve such a problem, a pin-shaped button body or a clear button is accommodated in the cover button, and the button body and the clear button are provided with a plurality of stops at the middle and high portions of the metal shaft member. A flange or cam flange is integrally formed, a lock spring is latched between upper and lower stop flanges, and the lowermost stop flange or cam flange is urged upward by a so-called bamboo spring (for example, (See Patent Document 5)

  However, the button lock has a deformed button body and a clear button, and is difficult to manufacture. The button body is fitted with a washer, and a button washer is attached to it, and a lock spring is passed over the reset notch of the reset plate. Since the button body is attached to the lock spring while being assembled, the number of parts is large, the assembly thereof is complicated and troublesome, and the configuration of the button body and the clear button is complicated and difficult to process. .

JP 2004-68546 A Japanese Patent Laid-Open No. 11-303472 Japanese Examined Patent Publication No. 62-54951 Japanese Patent No. 2803804 Japanese Patent No. 3648043

  The present invention solves such a problem, and is suitable for, for example, a lock of a mail box, reduces the number of parts, can be assembled rationally and easily, and is small, light, inexpensive, and easy to manufacture. The purpose is to provide a button lock that can be easily and securely operated.

  According to the first aspect of the present invention, there is provided a lock pin having one or more lock pins that are pressed and urged upward while holding specific password information, and one or more through holes through which the lock pins can be inserted. A press plate, a lock plate having one or a plurality of holes that can be engaged with and disengaged from the lock pin, and one or a plurality of through holes through which the lock pin can be inserted, and in the same direction as the lock plate A movable reset block, an engagement portion that can be engaged with and disengaged from the hole, and a locking piece that can be engaged with a mouth edge of the through hole. Linked to the locking and unlocking operation of the operation lever, it is provided so as to be able to advance and retreat. When the engaging portion and the stoma hole are engaged, the lock plate is prevented from moving so that the lock can be locked. When the engagement with the hole is released, the lock plate can be moved and unlocked. An unlocking unit that presses the lock pin by providing an engaging portion projecting from the through hole of the reset block and providing a locking piece of the lock pin to be engageable with the engaging portion. The engaging piece is engaged with the engaging portion, and the lock pin is provided so as to be able to shift obliquely in the protruding direction of the engaging portion, after the engagement between the engaging piece and the engaging portion is released. The lock pin is shifted upright, the engagement piece and the engagement portion can be engaged and retained, the parts of the button washer and the lock spring as in the past are reduced, and their complicated incorporation By avoiding it, it can be easily and efficiently incorporated, and it can be manufactured at low cost, and the unlocking operation of the lock pin is rationally performed, and the unlocked state of the lock pin is securely and firmly held, and the operation lever is used. Unlocking can be performed reliably and stably.

According to a second aspect of the present invention, the locking piece and the engaging portion are engaged and held, the unlocked state of the lock pin can be held, and the unlocked state of the lock pin can be securely and firmly held. ing.
According to a third aspect of the present invention, an oblong hole is formed in the concave direction of the lock pin in the concave hole of the lock cover inserted through the lower end of the lock pin, and the oblique displacement of the lock pin is promoted. The unlocking operation is rationally performed.
According to a fourth aspect of the present invention, the upper shaft portion of the lock pin is formed in a taper shape to promote rocking of the lock pin within the push button, and to promote oblique shift of the lock pin.

  According to a fifth aspect of the present invention, the first and second engaging portions are provided at the upper and lower positions below the locking piece of the lock pin, and the first and second engaging portions are arranged 180 degrees out of phase with each other. When the lock pin password is input, the first engaging portion is disposed immediately above the fistula, the second engaging portion is disposed to be engageable with the fistula, and the unlocking is performed by pressing the lock pin. 1. Move the first engaging part so that it can be engaged with the fistula, and move the second engaging part directly below the fistula. When entering the lock pin password, that is, locking and unlocking rationally and accurately. I try to do it.

According to a sixth aspect of the present invention, there is provided a taper surface in which a reset pin is inserted into one through hole of the reset block in parallel with the lock pin, and a locking piece provided on the reset pin is exposed to the through hole. When the lock pin that presses the reset pin is reset, the engagement between the engagement portion of the reset block and the locking piece of the lock pin can be released via the movement of the reset block. The lock pin is urged to move up and the lock pin is reset rationally.
The invention according to claim 7 releases the engagement between the engaging portion of the reset block and the locking piece of the lock pin, enables the lock pin to be returned to the state at the time of password input, and at the time of password input of the lock pin. The state can be reasonably formed.

  According to the first aspect of the present invention, an engaging portion is provided so as to face the through hole of the reset block, and a locking piece of the lock pin is provided in the engaging portion so as to be engageable, and the lock pin is pressed. At the time of unlocking, the locking piece and the engaging portion are engaged, and the lock pin is provided so as to be able to shift obliquely in the protruding direction of the engaging portion, and the locking piece and the engaging portion are engaged. After the release, the lock pin is shifted upright, and the locking piece and the engaging portion can be engaged and held, so that conventional button washers and lock spring parts can be reduced, It can be easily and efficiently incorporated, avoiding complicated assembly, and can be manufactured at low cost, and the unlocking operation of the lock pin is rationally performed, and the unlocking state of the lock pin is securely and firmly maintained. Unlocking with the operation lever can be performed reliably and stably.

In the invention of claim 2, since the locking piece and the engaging portion are engaged and held, and the unlocked state of the lock pin can be held, the unlocked state of the lock pin is securely and firmly held. Can do.
In the invention of claim 3, since the elongated hole is formed in the oblique displacement direction of the lock pin in the concave hole of the lock cover that passes through the lower end portion of the lock pin, the oblique displacement of the lock pin is promoted, The unlocking operation can be performed rationally.
According to a fourth aspect of the present invention, the upper shaft portion of the lock pin is formed in a taper shape, and the rock pin can be oscillated in the push button and the oblique displacement of the lock pin can be promoted.

  According to a fifth aspect of the present invention, the first and second engaging portions are provided at the upper and lower positions below the locking piece of the lock pin, and the first and second engaging portions are arranged 180 degrees out of phase with each other. When the lock pin password is input, the first engaging portion is disposed immediately above the fistula, the second engaging portion is disposed to be engageable with the fistula, and the unlocking is performed by pressing the lock pin. Since the first engaging portion is moved so as to be engageable with the fistula and the second engaging portion can be moved directly below the fistula, when the lock pin password is input, that is, locking and unlocking are rational and Can be done accurately.

According to a sixth aspect of the present invention, there is provided a taper surface in which a reset pin is inserted into one through hole of the reset block in parallel with the lock pin, and a locking piece provided on the reset pin is exposed to the through hole. When the lock pin that presses the reset pin is reset, the engagement between the engagement portion of the reset block and the locking piece of the lock pin can be released through the movement of the reset block. Therefore, it is possible to promote the upward movement of the lock pin and rationally reset the lock pin.
According to the seventh aspect of the present invention, since the engagement between the engaging portion of the reset block and the locking piece of the lock pin is released and the lock pin can be returned to the state at the time of password input, the password input of the lock pin The state of time can be reasonably formed.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1 to FIG. 27, reference numeral 1 denotes a substantially box-shaped mailbox, and a substantially horizontally long rectangular cover plate 2 at one end of the opening. Are connected to a mounting hole (not shown) provided at the tip of the plate 2 by a suitable means such as a locking claw (not shown). ing.
In the figure, reference numeral 4 denotes a mail slot formed in the upper part of the cover plate 2, and 5 denotes an opening / closing plate of the mail slot 4.

The button lock 3 is formed in a horizontally long substantially box shape, which has a substantially box-shaped lock body 6 and a lock cover 7 that closes the rear opening of the body 6. A plurality of push buttons 8 and a reset button 9 are arranged in two upper and lower stages on the front end face, and secret information (including letters, numbers, symbols, and signs) 10 and a reset display on the front face of the lock body 6 at the base. 11 which is 11 is displayed.
In the embodiment, seven push buttons 8 and one reset button 9 are provided on the flat front end surface of the lock body 6, and numbers 1 to 7 are used around the base of each push button 8 as the password information 10. An alphabet symbol C is used as the reset display 11.

A substantially plate-shaped operation lever 12 is provided at one end portion of the front surface of the button lock 3 so as to be pressed, and a latch bolt 13 is provided at a side end portion of the button lock 3 so as to be retractable.
The latch bolt 13 is disposed so as to be engageable with a recess (not shown) provided in a side portion of the mailbox 1 or a separate fixing frame 1a, and the push button 8 is pressed on the basis of password information. Thus, the latch bolt 13 is retracted from the recess so that the cover plate 2 can be opened.
In the figure, 13a is a convex portion protruding from the latch bolt 13, and is disposed so as to be able to engage with the front end portion of the lock body 6. The protruding displacement of the latch bolt 13 can be regulated.

The lock body 6 is formed in a substantially box shape with a synthetic resin, and a plurality of button insertion holes 14 and 15 having the same diameter are formed on the front end surface thereof, and the push button 8 is inserted into the button insertion hole 14 so as to be engageable. The reset button 9 is inserted into the button insertion hole 15 so as to be engageable.
In the figure, reference numerals 16 and 17 denote slightly large-diameter communication holes that are connected to the button insertion holes 14 and 15, and the step portions 8 a and 9 a of the buttons 8 and 9 can be engaged with the step portions.

A laterally long lock chamber 18 surrounded by a peripheral wall is formed inside the lock body 6, and side grooves 21 and 22 are formed in side walls 19 and 20 opposed to the length direction of the lock body 6. A tail pin of a lock pin guide block to be described later is accommodated.
A screw hole 23 and a pin hole 24 are formed in the lower end surfaces of the side walls 19 and 20, and a screw 25 is screwed into the screw hole 23 from the outside of the lock cover 7, and protrudes from the lock hole 7 into the pin hole 24. Pin 26 is inserted. In the figure, 27 are screw holes provided at the four corners of the lock cover 7.

A lock pin press 28, a reset block 29, a lock plate 30, and a lock pin guide block 31 are sequentially accommodated in the lock chamber 18 from above, and a lock cover 7 is disposed at the lowest position.
Of these, the lock pin press 28 is made of a horizontally-long rectangular stainless steel plate that is substantially the same as the cross-sectional shape of the lock chamber 18, and a pair of tongue pieces 32, 33 project from both ends in the length direction. Has been.
One tongue piece 32 is disposed to be engageable with the inner surface of the side wall 19 located at the corner portion 34 of the lock chamber 18, and the other tongue piece 33 is disposed to be engageable with a recess 35 formed in the side wall 20. Yes.

  A notch 36 is formed between the tongue pieces 32, 32, and a spring receiver 37 is bent so as to face the notch 36. A latch spring 38 is inserted between the spring receiver 37 and the latch bolt 13. The latch bolt 13 is urged so as to protrude outward through the elasticity of the spring 38.

A plurality of, in the embodiment, eight through holes 39 are formed in the lock pin retainer 28, the lock pin 40 capable of inputting specific password information into the through hole 39, and the unlocking displacement of the lock pin 40 are canceled, A reset pin 41 that can be restored when the password is input is movably inserted.
Among these, the lock pin 40 is used at the time of substantial locking / unlocking by inputting specific password information, and the reset pin 41 is used for recovering the state at the time of password input of the lock pin 40.

  The reset block 29 is formed of a synthetic resin into a substantially rectangular thick lattice plate, and the width thereof is the same as that of the lock pin press 28, and the length thereof is shorter than that of the lock pin press 28. The same number of lattice-like through holes 42 and 42a as the through holes 39 are formed on the plate surface.

The through hole 42 is divided into a rectangular shape by an outer frame 43 and inner frames 44, 45, the lock pin 40 can be inserted into the through hole 42, and one through hole 42a is formed in a slightly small rectangular shape, The reset pin 41 can be inserted into the through hole 42a.
A taper-like engagement portion 47 is formed at the rear opening edge of the through hole 42a, the taper surface is formed obliquely upward, and the locking portion of the reset pin 41 is formed on the taper surface. Are arranged to be engageable.

The reset block 29 is provided with a taper-like engagement portion 46 projecting over a substantially half length on one inner surface of the outer frame 43 and the inner frame 45 along the moving direction. The taper surfaces 70a and 70b of the lock pin 40 are arranged to be engageable with each other.
The taper surface of the engaging portion 46 is formed downward in the direction orthogonal to the moving direction of the reset block 29, and the taper surface of the engaging portion 47 is formed downward in the moving direction of the reset block 29. Yes.

The reset block 29 is slidably disposed on the lock pin press 28 disposed immediately above the reset block 29 and is slidably accommodated on a lock plate 30 disposed directly below the reset block 29.
A reset block spring 49 is inserted between the rear end surface of the reset block 29 and a concave groove 48 formed between the concave portions 35, 35, and is urged to move forward through the elasticity of the spring 49. is doing.
When the reset block 29 is moved, its front end surface is brought into contact with the spring receiver 37 so that the forward movement position can be restricted.

  The lock plate 30 is made of a horizontally long rectangular stainless steel plate substantially the same shape as the lock pin retainer 28, and a notch 50 is formed at a corner where the reset pin 41 at the rear end of the lock plate 30 moves. On the plate surface excluding the number of holes 51, one fewer than the number of the through holes 39 is arranged in two rows.

  The hole 51 is formed in a substantially inverted L shape, and the hole 51 includes an unlock groove 51a formed in the moving direction of the lock plate 30 and a lock groove formed in a direction orthogonal to the unlock groove 51a. 51b, an engagement portion (described later) of the lock pin 40 is disposed at a bent portion of the hole 51, that is, an intersection between the unlock groove 51a and the lock groove 51b, and a flange (described later) is provided. It is arranged so that it can penetrate.

  A pair of bent pieces 52 are formed on both sides of the front end portion of the lock plate 30, and the front end face of the reset block 29 is disposed on the bent pieces 52 so as to be engageable. A hook piece 53 projects forwardly between the bent pieces 52, and a latching claw 54 is bent at the front end thereof, so that the latching claw 54 can be latched on the through hole 55 of the latch bolt 13. ing.

The lock pin guide block 31 is formed of a synthetic resin into a horizontally-long rectangular plate substantially the same shape as the cross-sectional shape of the lock chamber 18, and a pair of engaging legs 56 and 57 project from the front and rear ends thereof. The front portion of the engagement leg 56 engages with the corner portion 34, and the engagement leg 57 engages with the concave portion 35 and is inserted, thereby holding the lock pin guide block 31 in a fixed position.
The rear end portion of the engagement leg 56 is disposed so as to be engageable with the bent piece 52, and the movement of the lock plate 30 is restricted, and the latch bolt 13 is movably disposed between the engagement legs 56, 56. ing.

  The same number of guide holes 58 as the through holes 42 are formed at the same position in the lock pin guide block 31, and the guide holes 58 are rectangular with the outer frame 59 and the inner frames 60, 61 having substantially the same shape as the through hole 42. A pair of partition frames 62 are formed at one side end inside the guide hole 58 except for the one, and one side end of each guide hole 58 is divided into three.

The partition frame 62 has an appropriate elasticity, and when the password of the lock pin 40 is inputted, the partition frames 62 and 62 engaged with the angular shaft portion 74 are made elastic as the lock pin 40 rotates around the axis. The lock pin 40 is pushed open and restored by its elasticity after the password is input, so that the lock position of the lock pin 40 can be held.
In the figure, reference numeral 63 denotes a small square hole formed at one end of the one guide hole 58 so that the reset pin 41 can be inserted.

The lock cover 7 is formed of a synthetic resin into a horizontally-long rectangular plate whose planar shape is substantially the same as that of the lock body 6, and a concave hole 64 having the same diameter as the communication holes 16, 17 is formed on the flat inner surface thereof. A long hole 65 is formed on the bottom of the concave hole 64 except for the one, and the through hole 66 is formed in the center of the bottom of the one concave hole 64.
The long hole 65 is formed to be offset to one end portion along the direction perpendicular to the length direction of the lock cover 7.

A plurality of concave holes 67 are formed on the flat outer surface of the lock cover 7 so as to correspond to the long holes 65. The concave holes 67 are smaller in diameter than the concave holes 64 and are offset from the long holes 65. They are offset in the same direction as the direction, and are inscribed in a plane.
In the figure, reference numeral 68 denotes a rectangular plate-like convex portion protruding from the front end portion of the inner surface of the lock cover 7, which is fitted into the side groove 21, and its rear end portion is connected to the front end portion of the lock pin guide block 31. It arrange | positions so that engagement is possible.

On the other hand, the push button 8 and the reset button 9 are formed in the same shape, and these are formed into a hollow cylindrical shape with a bottom by a synthetic resin, and the inside thereof is formed into a tapered taper shape, and the opening side thereof is enlarged. A button spring 69 is inserted in the diameter portion.
The button spring 69 is inserted between the inner surfaces of the step portions 8a and 9a and the lock pin retainer 28, and urges the push button 8 and the reset button 9 upward by its elasticity.

The lock pin 40 and the reset pin 41 are formed in a different shape by zinc die casting, and the upper portions thereof are inserted so as to be engageable with the push button 8 or the reset button 9, and their shaft portions are the through hole 39 and the through hole. 42 is inserted.
Among these, the shaft portion of the lock pin 40 is inserted into the hole 51, the guide hole 58 and the long hole 64, and the shaft portion of the reset pin 41 is inserted into the square hole 63 and the through hole 65 through the notch portion 50. Yes.

  The lock pin 40 is formed in a round bar shape at the upper and lower parts, the intermediate part is formed in a deformed shape with a rectangular cross section, and the substantially upper half part is formed in a tapered taper engaging shaft part 40a. The engagement shaft portion 40a is accommodated inside the push button 8 so as to be swingable and engageable.

  The locking pin 40 has a rectangular plate-like locking piece 70 from the upper side in the middle portion, a first notch groove 71 opened to the side, a substantially disc-shaped flange 72, and the first notch groove 71 opposite. A second notch groove 73 opened to the side and a square shaft portion 74 are formed.

Among these, the locking piece 70 is formed in a horizontally-long rectangular plate shape, and downward taper surfaces 70a and 70b are formed on both side surfaces in the length direction. It arrange | positions so that engagement to an opening edge is possible.
The taper surfaces 70a and 70b are disposed so as to be engageable with the engaging portion 46, and the taper surface 70b is directly above the engaging portion 46 as shown in FIG. The taper surface 70a is positioned so as to be engageable immediately above the engaging portion 46 as shown in FIG.

The groove width in the axial direction of the first notch groove 71 is formed to be approximately ½ of the height of the reset block 29, and the depth of the groove is formed at the same position as the axis of the lock pin 40. As a first engaging portion facing the groove 71, the cross section of the engaging shaft portion 40b is formed in a horizontally long rectangle.
Axis width W ₁ of one of the cross-section of the engaging shaft section 40b is formed slightly narrow than the other axis width W _2, to allow engaged with the hinge width W ₁ parts unlock groove 51a, the other The shaft width W ₂ is formed so as not to be engaged with the unlock groove 51a.
The engaging shaft portion 40b is positioned immediately above the lock groove 51b before the lock pin 40 is input to the lock pin 40, and is moved immediately above the lock groove 51a after the lock pin 40 is input. It arrange | positions so that engagement with the lock groove 51a is possible.

  The flange 72 is formed in a substantially disc shape that is concentric with the axis of the lock pin 40, and is therefore arranged offset immediately below the engagement shaft portion 40 b, and both side ends thereof are lateral to the locking piece 70. It protrudes and is movable through the bent portion of the hole 51.

  The second notch groove 73 is opened on the opposite side to the first notch groove 71, and the axial groove width thereof is formed to be approximately half the width of the first notch groove 71, and the lock plate The groove depth is formed at the same position as the shaft center of the lock pin 40, and the cross section of the shaft portion 40 c serves as a second engagement portion that faces the groove 71. Is formed in a horizontally long rectangle substantially the same shape as the engagement shaft portion 40b.

One shaft width W _{3 in} the cross section of the shaft portion 40c is formed to be slightly narrower than the other shaft width W ₄ so that the shaft width W ₃ portion can be engaged with the unlock groove 51a. The width W ₄ portion is formed so as not to be engaged with the unlock groove 51a.
The shaft portion 40c is arranged to be engaged with the unlock groove 51a before the password input of the lock pin 40, and is arranged to be engageable with the mouth edge of the lock groove 51b after the password input of the lock pin 40. At the time of unlocking, it moves directly below the lock groove 51b and is disposed so that the engagement with the lock groove 51b can be released.

  The shaft portion 40c is positioned in the shaft hole 51 before the push button 8 is operated, and is positioned in the shaft hole 51 before the password input of the lock pin 40, and the lock groove after the password input of the lock pin 40. 51b and engages with 51b to prevent the lock plate 30 from retreating, and when unlocking the push button 8, the lock plate 30 is moved directly below the lock groove 51b so that the lock plate 30 can be retreated. ing.

A cross section of the rectangular shaft portion 74 is formed in a horizontally long rectangle, and a lower end portion of the rectangular shaft portion 74 is inserted between the partition frames 62 so as to be engageable, thereby restricting the rotation of the lock pin 40.
A stepped portion 74a is formed at the lower portion of the angular shaft portion 74, and a centering spring 75 is interposed between the stepped portion 74a and the bottom of the recessed hole 64. The spring 75 is constituted by a conical coil spring in the embodiment, The lock pin 40 is biased upward via the elasticity of the spring 75.

The lower portion of the lock pin 40 is inserted into the long hole 65, and the lower end portion thereof is disposed in the concave hole 67, so that the lower end portion can be moved along the long hole 65.
In the figure, reference numeral 76 denotes an engagement groove formed on the lower end surface of the lock pin 40 so that the tip of a tool such as a screwdriver (not shown) can be inserted, and can be rotated around the axis when the lock pin 40 is input with a password. I have to. In the embodiment, the engaging groove 76 is formed in the same direction as the center line in the length direction of the locking piece 70.

As shown in FIG. 3, the lock pin 40 has a first notch groove in which the length direction of the locking piece 70 is orthogonal to the longitudinal direction of the lock body 6 and the taper surfaces 70a and 70b are arranged in the same direction. 71 is placed in the lock main body 6 facing upward.
Accordingly, one taper surface 70 b of the lock pin 40 is positioned so as to be engageable immediately above the engaging portion 46, and the locking piece 70 is engaged with the lower opening edge of the through hole 39. This situation is as shown in FIG.

On the other hand, the reset pin 41 is formed to have substantially the same length as the lock pin 40, and the upper and lower portions thereof are formed in a round bar shape, the intermediate portion is formed in an irregular shape having a rectangular cross section, and the upper portion is formed inside the push button 9. It is accommodated so that engagement is possible.
As shown in FIG. 15, the reset pin 41 has a rectangular plate-like locking piece 77, a cutout groove 78 opened to the side, and a square shaft portion 79 in the middle portion in order from the upper side.

Among these, the locking piece 77 is formed in a substantially right triangular prism shape, and a taper surface 77 a inclined downward is formed on the side surface thereof. The taper surface 77 a is engaged with the engaging portion 47 of the reset block 29. It is possible.
The groove width in the axial direction of the notch groove 78 is slightly wider than the plate thickness of the lock plate 30, and the depth of the groove is formed at the same position as the axis of the reset pin 41. The cross section of the shaft facing 78 is formed in a horizontally long rectangle.

The rectangular shaft portion 79 has a substantially square cross-sectional shape, and the shaft portion 79 is slidably fitted into the rectangular hole 63 and inserted into the through hole 66.
A stepped portion 79a is formed at the lower portion of the rectangular shaft portion 79, and a conical coil spring 76 is inserted between the stepped portion 79a and the bottom of the recessed hole 64, and the reset pin 41 is attached upward via its elasticity. It is fast.

  As shown in FIG. 3, the reset pin 41 is arranged such that the length direction of the locking piece 77 is parallel to the longitudinal direction of the lock body 6, and the locking piece 77 is orthogonal to the locking piece 70 of the lock pin 40. The taper surface 77a is arranged so as to be engageable with the engaging portion 47. This situation is as shown in FIG.

The reset pin 41 is placed in a fixed position regardless of whether the lock pin 40 has entered the password, and the pressing surface of the push button 9 causes the taper surface 77a to engage the engaging portion 47, thereby resetting the reset block 29. The block spring 49 can be moved backward against the elasticity of the block spring 49 so that the engagement between the locking piece 70 and the engaging portion 46 of the reset block 29 during the unlocking operation of the lock pin 40 can be released.
The rear displacement of the reset block 29 is set to approximately ½ of the length of the through hole 42 in the front-rear direction. When the block 29 is retracted, the engaging portion 46 is moved, and the engaging portion 46 and the lock pin are moved. 40 is released from engagement with the locking piece 70 so that the lock pin 40 protrudes upward to be able to return to the original position of the hole 51.

On the other hand, the operation lever 12 is formed on a synthetic resin plate having a substantially L-shaped cross section, and a connecting piece 80 projects from one end of the operating lever 12 into a lever mounting hole 81 opened on the front surface of the lock body 6. The pivot 82 inserted and projecting from the side of the connecting piece 80 is rotatably accommodated in a concave groove 83 formed in the lock body 6.
A synthetic resin lever retainer 84 is fitted and accommodated in a recess at the back of the lever mounting hole 81, and a support shaft 87 integral with the latch cam 86 is rotated in a notch groove 85 of the lever retainer 84. Contained in a movable manner.

The latch cam 86 is formed in a substantially U shape by a synthetic resin, and an engagement shaft portion 88 projects from the rear portion thereof, and the shaft portion 88 is disposed so as to be engageable with the engagement portion 80 a at the tip of the connecting piece 80. Yes.
That is, the latch cam 86 is disposed so as to be able to stand up and engage with the bent piece 52 of the lock plate 30 when locked, and the engagement shaft portion 88 can be engaged with the engagement portion 80a of the operation lever 12. It is arranged.

When the operation lever 12 is pivoted about the pivot 82, the latch cam 86 is pushed and moved by the engagement shaft 88 to pivot inward with the pivot 87 as a fulcrum, and the bent piece 52 is moved backward. The latch bolt 13 can be moved backward.
A rear end portion of the latch bolt 13 is movably accommodated between the latch cams 86, the latch bolt 13 is formed into a substantially ship shape with a synthetic resin, and a spring groove 89 is formed at the rear end portion thereof. A latch spring 38 is interposed between the spring receiver 37 and the spring bolt 37, and the latch bolt 13 is urged forward by the elasticity of the spring 38.

A through hole 90 is formed in the latch cam 86, and a hooking claw 54 of the hook piece 53 is hooked in the through hole 90, so that the displacement of the latch bolt 13 can be moved with the displacement of the lock plate 30 or the reset block 29. I have to.
That is, the latch bolt 13 is linked to the displacement of the lock plate 30 via the latching pawl 54, and linked to the displacement of the reset block 29 via the bent piece 52, and is operated when the lock pin 40 is unlocked. The lever 12 can be retracted through the unlocking operation.
In the figure, reference numeral 91 denotes a positioning mark formed at the lower end of the lock pin 40, and in the embodiment, is formed on one side of the engagement groove 76 and orthogonal to the engagement groove 76.

The button lock constructed as described above includes the lock body 6, the lock cover 7, the push buttons 8, 9, the latch bolt 13, the operation lever 12, the reset block 29, the lock pin guide block 31, the lever press 84, and the latch cam. 86 and the like are molded with synthetic resin, and they are uniformly manufactured at low cost and at low cost.
Further, the lock pin holder 28 and the lock plate 30 are made by press-molding a stainless steel plate, and the lock pin 40 and the reset pin 41 are uniformly formed by zinc alloy die casting.

  Therefore, the weight can be reduced compared to conventional button locks, and since there is no need for button washers, washers and lock springs that lock the lock pins, the number of parts is reduced and the installation effort is reduced. This can be easily and inexpensively manufactured.

  Next, when assembling the button lock, the up-and-down position of the lock body 6 is reversed, that is, the lock body 6 is stably supported on a work table (not shown) with the upper surface of the lock body 6 facing downward. The upper surface of the main body 6 is supported by being slightly lifted from the work table, and the respective parts are sequentially accommodated and assembled in the lock main body 6.

3 and 4, the connecting piece 80 of the operating lever 12 is first inserted into the lever mounting hole 81 from the outside of the lock body 6, and the pivot 82 of the lever 12 is latched in the concave groove 83. The lever presser 84 is fitted and attached to the recess facing the concave groove 83.
Then, the support shaft 87 of the latch cam 86 is accommodated in the notch groove 85 of the lever press 84, the rear end portion of the latch bolt 13 is engaged between the latch cam 86, and the flat outer surface of the latch bolt 13 is placed on the side. It accommodates on the direction groove 21.

Thereafter, the push button 8 and the reset button 9 are inserted into the communication holes 16 and 17 from the inside of the lock body 6, and the operation-side ends protrude from the button insertion holes 14 and 15, and are inserted into the buttons 8 and 9. The button spring 69 is inserted.
Next, the lock pin retainer 28 is accommodated in the bottom of the lock chamber 18 of the lock body 6, the spring receiver 37 is disposed opposite to the spring groove 89 of the latch bolt 13, and the latch spring 38 is inserted therebetween, The latch bolt 13 is urged outward through the elasticity of the spring 38.
At that time, the protrusion 13 a of the latch bolt 13 is engaged with the peripheral wall of the side groove 21 to prevent the latch bolt 13 from protruding.

Thereafter, the lock pin 40 and the reset pin 41 are inserted into the through hole 39 of the lock pin presser 28. Among these, the taper shaft portion 40a on the upper side of the lock pin 40 is inserted into the through hole 39 excluding the one through hole 39 at the rear portion, the engaging shaft portion 40a is inserted into the button spring 69, and the push button 8 Insert inside.
At that time, each lock pin 40 is assembled with the positioning mark 91 facing the latch bolt 13, each locking piece 70 is arranged orthogonally to the length direction of the lock pin presser 28, and one of the taper surfaces thereof. 70b is positioned on the upper side, and the other taper surface 77a is positioned on the lower side.

Further, the reset pin 41 has the locking piece 77 arranged orthogonally to the length direction of the lock pin press 28 and the taper surface 77a facing rearward, and the upper shaft portion is inserted into the button spring 69. And inserted into the reset button 9.
The lock pin 40 and the reset pin 41 are engaged with the rim portion of the through hole 39 through the locking pieces 70 and 77, and the insertion length thereof is restricted.

  Then, the reset block 29 is inserted from above the lock pin 40 and the reset pin 41, the lock pin 40 is inserted into the through hole 42, the reset pin 41 is inserted into the through hole 42a, and the rear end portion of the reset block 29 is inserted. A reset block spring 49 is inserted between the lock body 6 and the side wall 20 of the lock body 6, the block 29 is urged forward by the elasticity of the spring 49, and the front end portion of the block 29 is Abuts on the spring receiver 37.

In this way, the engaging portion 46 of the reset block 29 is positioned so as to be engageable immediately above the taper surface 70a of the lock pin 40, and the engagement of the reset block 29 is directly above the taper surface 77a of the reset pin 41. The joint portion 47 is positioned so as to be engageable.
Thereafter, the lock plate 30 is inserted from above the lock pin 40 and the reset pin 41, and the angular shaft portion 74 of the lock pin 40 is positioned at the intersection of the hole 51 and the lock groove 51b. The angular shaft portion 79 of the reset pin 41 is positioned, and the latching claw 54 is latched on the through hole 90 of the latch bolt 13.
Therefore, the shaft portion 40 c of the lock pin 40 is positioned in the hole 51 along the moving direction of the lock plate 30.

Thereafter, the lock pin guide block 31 is inserted from above the lock plate 30, the engaging legs 56, 56 at the front end thereof are engaged with the corner 34 of the lock chamber 18, and the engaging legs 57 at the rear end are engaged. It fits between the side grooves 22, and the lower surface of the guide block 31 is assembled flush with the lower end surface of the lock body 6.
At that time, the lock pin 40 and the reset pin 41 are inserted into the guide hole 58, the angular shaft portion 74 of the lock pin 40 is inserted between the partition frames 62, 62, and the lower end portion of the pin 40 protrudes, while resetting The square shaft portion 79 of the pin 41 is inserted into the square hole 63 and the lower end portion of the pin 41 protrudes.

  Thereafter, a centering spring 75 is inserted into the projecting portions of the lock pin 40 and the reset pin 41, and the lock cover 7 is superimposed on the lower surface of the lock pin guide block 31 from above, and the projecting of the pins 40, 41 is performed. The lower end portion of the lock pin 40 is inserted into the long hole 65, and the lower end portion of the reset pin 41 is inserted into the through hole 66.

  Then, the stepped portion on the inner surface of the lock cover 7 is engaged with the stepped portion of the lock pin guide block 31, the convex portion 68 of the lock cover 7 is fitted into the side groove 21 of the lock body 6, and these are positioned. At the same time, the pin 26 of the lock cover 7 is inserted into the pin hole 24 of the lock body 6, the screw hole 27 of the lock cover 7 is aligned with the screw hole 23 of the lock body 6, and the screw 25 is screwed into these. Then, the lock body 6 and the lock cover 7 are connected.

  As described above, the button lock of the present invention can be assembled easily and efficiently because the interior of the lock body 6 can be stably held upward as shown in FIGS. The assembly is good and accurate, and does not require the troublesome work of previously engaging a plurality of lock springs on each pin of the reset plate as in the prior art.

The button lock 3 assembled in this way is formed in a substantially horizontally long box shape as shown in FIG. 2, and cancels the unlocked state of the seven push buttons 8 for inputting the password information and the lock pin 40 on the front surface, and the password. One reset button 9 for returning to the input state is arranged in two rows up and down, and they protrude forward at the same height.
In the vicinity of this button group, the operation lever 12 is exposed in a substantially L-shape on the front surface, the latch bolt 13 is disposed at one end of the lock body 6 so that it can be projected and retracted, and the lock cover 7 projects rearward. Further, the lower end surface of the reset pin 41 and the lower end surface of the lock pin 40 are exposed in the through hole 66 and the concave hole 67 on the lower surface of the lock cover 7, and the engagement groove 76 is formed on the lower end surface of the lock pin 40. A positioning mark 91 is exposed, and each positioning mark 91 is disposed forward, that is, on the latch bolt 13 side.

When the button lock 3 is assembled, the lock pin retainer 28 is fixed by engaging both front and rear end portions with the side walls 19 and 20 of the lock chamber 18, and a lock pin 40 and a reset pin 41 penetrating through the through hole 39. Is slidably supported at a fixed position.
The reset block 29 is urged forward by a reset block spring 49, and its front end is engaged with the bent piece 52 of the lock plate 30 to urge the lock plate 30 in the same direction. The front end portion of 29 is engaged with a spring support 37 of the lock pin presser 28, and its forward displacement is restricted.

Further, the lock plate 30 is urged forward together with the reset block 29 by the reset block spring 49, the hook piece 54 is latched to the latch bolt 13, and is inserted into the spring receiver 37 and the spring groove 89. The latch bolt 13 is urged forward by the latch spring 38.
The lock pin guide block 31 is fixed with its front and rear ends engaged with the side walls 19 and 20 of the lock chamber 18.

On the other hand, the lock pin 40 is urged upward by a centering spring 76 disposed at the lower end thereof, and the upward movement is restricted by engaging the locking piece 70 with the lower edge of the through hole 39, The upper taper shaft portion 40 a is inserted into the push button 8.
The push button 8 is urged upward by a button spring 69 and protrudes from the upper surface of the lock body 6, and the upper end portion of the lock pin 40 is located in the push button 8 so as to be engageable.

  As shown in FIG. 16, the lock pin 40 is positioned on the rear side in each through hole 42 of the reset block 29 before the password is input, and one taper surface 70 a of the locking piece 70 is connected to the block 29. The first notch groove 71 is located in the through hole 42 so as to be opposed to the engaging part 46 and the engaging shaft part 40b is a locking groove. It is located directly above 51b.

Further, the second notch groove 73 of the lock pin 40 is disposed at the same height as the lock 7 groove 51a, and the shaft portion 40c is disposed to engage with the unlock groove 51a. This situation is as shown in FIGS.
Therefore, the lock plate 30 can be moved (retracted) along the unlock groove 51a, and the button lock 3 can be unlocked by operating the operation lever 12 thereafter.

That is, when the button lock 3 is locked, the latch bolt 38 protrudes forward by the latch spring 38, and the latch bolt 38 is engaged with a recess (not shown) of the fixed frame 1 a attached to the mailbox 1. This situation is as shown in FIG.
At the time of such locking, the reset block 29 is urged forward by the reset block spring 49, the front end portion of the block 29 is engaged with the bent piece 52, and the lock plate 30 is urged forward. The bent piece 52 is engaged with the latch cam 86.
Accordingly, the latch cam 86 is biased so as to be pivotable counterclockwise in FIG. 26 about the support shaft 87, and the engagement shaft portion 88 is biased in the same direction so as to be integrated with the operation lever 12. It engages with the portion 80a, prevents the lever 12 from being unlocked, and maintains the locked state.

During such locking, the lock plate 30 can be retracted by an operation described later, and when the operation lever 12 is drawn counterclockwise in FIG. 26 with the pivot 82 as a fulcrum, the engaging portion 80a rotates in the same direction. Then, the engagement shaft portion 88 is pushed and moved.
For this reason, the latch cam 86 rotates about the support shaft 87 in the clockwise direction in FIG. 26, the reset block 29 is pushed against the reset block spring 49, and the bent piece 52 moves together with this to move the lock plate. 30 moves backward.

As a result, the latch bolt 13 is pulled by the latching claw 54, and the latch bolt 13 is retracted against the latch spring 38 and is detached from the recess (not shown).
Therefore, if the cover plate 2 is drawn around and opened after that, the internal mail can be taken out.

On the other hand, the reset pin 41 is urged upward by the centering spring 76 disposed at the lower end during the assembly, and engages with the lower mouth edge of the engaging piece 77 through the hole 39 and moves upward. The upper shaft portion is restricted and inserted into the reset button 9.
Further, the taper surface 77 a of the reset pin 41 is normally engaged with the taper surface of the engaging portion 47 of the reset block 29. This situation is as shown in FIG.

When the button lock 3 assembled in this way is used, for example, password information is input to the button lock 3 and attached to the cover plate 2 of the mailbox 1.
First, when inputting password information to the button lock 3, desired password information is input to one or a plurality of lock pins 40. In the embodiment, PIN numbers 1 to 7 can be input to the seven lock pins 40 as PIN information, and the PIN numbers are displayed on the front surface of the periphery of the button insertion hole 14 into which the lock pin 40 is inserted. .

For example, when a password is input to the three lock pins 40 corresponding to “1” to “3” of the password information 10, the password number is “123”, and “1”, “3”, “5”, “ When the password is input to the four lock pins 40 corresponding to “7”, the password becomes the four-digit password “1357”, and the lock pin 40 that is not input does not have the password.
Therefore, when a password is input to only one lock pin 40, a one-digit password is obtained. When a password is input to all the lock pins 40, the password is 7-digit password information “1234567”, and the protection capability is Increase dramatically.

Therefore, when a password is actually input to the lock pin 40, a tool such as a minus driver having an engaging portion that can be engaged with the engaging groove 76 is prepared, and the engaging portion forms a desired password. Engage with the engaging groove 76 of the lock pin 40 and rotate it 180 °.
That is, the tool is rotated around the axis, the lock pin 40 corresponding to the password is moved around the axis, and the partition frames 62 and 62 positioned on both sides of the square shaft portion 74 of the lock pin 40 are After the lock pin 40 is rotated against the elasticity and the lock pin 40 is rotated by 180 °, the partition frames 62 and 62 are restored by the elasticity and are engaged with both side surfaces of the angular shaft portion 74 to hold the secret position.

When the password is input to the lock pin 40 in this manner, the positioning mark 91 at the lower end changes its direction from the front to the back by rotating the pin 40 by 180 °, and this situation is caused from the concave hole 64 on the lower surface of the lock cover 7. You can confirm. Therefore, it is possible to easily confirm the presence / absence of a password input or an error in the input according to the direction of the positioning mark 91.
In this case, if a wrong password is entered, the lock pin 40 is rotated 180 °, and the lock pin 40 is returned to its original shape when assembled. To do.

In the embodiment, the password is individually input to the five lock pins 40 corresponding to “1”, “3”, “4”, “5”, “7” of the password information 10, and the 5-digit password “13457” is input. In this case, the order of the password input to the lock pin 40 may be random, and therefore the password input can be performed easily and smoothly. This password input state is as shown in FIGS.

For each lock pin 40 that has been entered as a password, one taper surface 70b of the locking piece 70 is positioned immediately above the engaging portion 46 of the reset block 29, and the engaging shaft portion 40b is located on the unlocking groove 51a side. The shaft 40c on the opposite side moves into the lock groove 51b.
On the other hand, the lock pins 40 whose password information 10 is not “2” and “6” maintain the state before the password is input, and one of the taper surfaces 70a of the locking pieces 70 is the reset block. 29, the engaging shaft portion 40b is positioned immediately above the locking groove 51b, and the opposite shaft portion 40c is engaged with the unlocking groove 51a.

At the time of such a password input, the shaft portion 40c is positioned so as to be engageable with the mouth edge portion of the lock groove 51b, and the lock plate 30 is prevented from retreating. To maintain.
Further, at the time of inputting the password, whether the rotation angle of the lock pin 40 is excessive or insufficient can be easily confirmed by checking whether the positioning mark 91 is parallel to the direction of the positioning mark 91 and the front / rear direction of the lock cover 7. The lock pin 40 is corrected by rotation adjustment.

Thus, after a password is input to the predetermined lock pin 40 and a predetermined password is set, the button lock 3 is attached to the end of the cover plate 2 by appropriate means.
This situation is as shown in FIG. 1, and the latch bolt 13 is attached to the side end portion of the cover plate 2 in a protruding state.

Thereafter, when the cover plate 2 is closed, the latch bolt 13 is engaged with the side end portion of the fixed frame 1a, and the latch spring 38 is compressed and engaged into the recess (not shown).
For this reason, the latch bolt 13 protrudes by the latch spring 38 and engages with the mouth edge of the recess to form the locked state, and the use state of the button lock 3 is formed.

In this case, when the cover plate 2 is closed, the latch bolt 13 moves backward and protrudes. As described above, the shaft portion 4c of the five lock pins 40 is engaged with the lock groove 51b after the password is inputted. In order to prevent the lock plate 30 from moving back and forth and thus to prevent the reset block 29 from moving back and forth, the secret state is maintained without alteration.
Therefore, the retracting and protruding displacement of the latch bolt 13 due to the closing of the lock plate 30 as described above is formed by the expansion and contraction displacement of the latch spring 38, and the operation lever 62 and the latch cam 86 do not operate, and are the same as in the locked state. Maintain state.

When taking out a mail piece inserted into the mailbox 1 at the time of locking the button lock 3, the push buttons 8 of the five lock pins 40 corresponding to the code number “13457” input to the code are locked. Unlock by pressing from the outside of the GOT 30.
Each push button 8 after the password input is as shown in FIG. 23A. When the push button 8 is pressed, the push button 8 is pushed down against the elasticity of the button spring 69, and the upper end of the button 8 is engaged. The combined lock pin 40 is pushed down against the centering spring 75.

At that time, one of the taper surfaces 70b of the lock pin 40 engages with the engaging portion 46 of the reset block 29, moves along the taper surface, and moves downward in the engaging portion 46. It shifts in the protruding direction.
That is, the lock pin 40 is shifted in the middle in the protruding direction of the engaging portion 46, and its axis is shifted obliquely in a direction orthogonal to the length direction of the reset block 29.

  This situation is as shown in FIG. 23 (b), in which the upper shaft portion of the lock pin 40 moves laterally inside the push button 8, and the lower angular shaft portion 74 moves upward along the partition frames 62, 62. It moves in the direction opposite to the shaft portion, and the lower end portion pushes the centering spring 75 to the side, and it is compressed and moved along the long hole 65.

When the taper surface 70b is moved directly below the taper surface of the engaging portion 46 and the engagement is released, the lower end portion of the lock pin 40 is formed in the concave hole 64 by the elasticity of the centering spring 75. Pulled back to the center and stood up.
Then, the lock pin 40 is urged upward by the elasticity of the spring 75, and one side of the locking piece 70 on the taper surface 70 b side is engaged with the lower surface of the engaging portion 46, maintain

This situation is as shown in FIGS. 18 and 23 (c), in which the first notch groove 71 is engaged with the lock groove 51b from directly above the lock groove 51b, and the adjacent engagement shaft portion 40b is directly from above the unlock groove 51a. Engage in the unlock groove 51a.
Further, the second cutout groove 73 moves from the position of the lock groove 51b directly below the unlock groove 51a, and the adjacent shaft part 40c moves from the lock groove 51b to directly below the lock groove 51b.

  On the other hand, the two lock pins 40 corresponding to the password numbers “2” and “6” for which the password is not input are not pressed by the push button 8 and maintain the same positions as before the password input, and the first notch The groove 71 and the engaging shaft portion 40b are located immediately above the pit hole 51, the second notch groove 73 is opened to the lock groove 51b, and the shaft portion 40c is engaged with the unlock groove 51a.

  Thus, when the engagement shaft portions 40b or 40c of all the lock pins 40 are engaged with the unlock grooves 51a of the lock plate 30, the substantial unlocking operation by the push button 8 is finished, and the lock plate 30 is It becomes possible to retreat. This situation is as shown in FIG.

Then, after that, when the operating lever 12 is turned counterclockwise in FIG. 26 with the pivot 82 as a fulcrum, the engaging portion 80a rotates in the same direction, and the engaging shaft portion 88 of the latch cam 86 is pushed.
Therefore, the latch cam 86 rotates in the clockwise direction in FIG. 26 with the support shaft 87 as a fulcrum, and the reset block 29 moves backward against the reset block spring 49 via the bent piece 52 engaged with the cam 86. Pushed and moved, the lock plate 30 moves and moves backward.

As a result, the latch bolt 13 is pulled by the latching claw 54 formed on the lock plate 30, and the latch bolt 13 is retracted against the latch spring 38, from the recess (not shown) of the fixed frame 1 a. break away.
Therefore, if the cover plate 2 is drawn around and opened after that, the internal mail can be taken out.

On the other hand, when the lock pin 40 that is not accidentally input with the password at the time of unlocking, or one or two lock pins 40 corresponding to the code numbers “2” and “6” in the embodiment, is pressed via the push button 8. The one taper surface 70a of the locking piece 70 is engaged with the engaging portion 46, and the lock pin 40 is shifted obliquely.
After the pressing, when the lock pin 40 is moved upward by the centering spring 76, the locking piece 70 on the same side as the taper surface 70a is engaged with the engaging portion 46, and the engaged state is maintained. .

For this reason, the first cutout groove 71 opens to the unlock groove 51a side, the adjacent engagement shaft portion 40b engages with the lock groove 51b, and the engagement shaft portion 40b engages with the opening edge of the lock groove 51b. As a result, the lock plate 30 cannot be retracted and the unlocked state is lost.
Therefore, when removing the unlocking obstacle and restoring the unlocked state, the reset button 9 is pressed against the button spring 69 and the reset pin 41 is pressed down against the centering spring 76.

  In this way, the locking piece 77 of the reset pin 41 engages with the engaging portion 47 of the reset block 29, and the block 29 is pushed backward against the elasticity of the reset block spring 49. The mating portion 46 is separated from the locking piece 70 on the same side as the taper surface 70a, and the engagement with the locking piece 70 is released. This situation is as shown in FIG.

As a result, all the lock pins 40 are moved upward by the centering spring 76. Of these, the lock pin 40 that has entered the password is prevented from moving upward by the engaging piece 70 engaging with the lower opening edge of the through hole 39.
On the other hand, the first notch groove 71 and the engaging shaft portion 40b move immediately above the hole 51, the second notch groove 73 opens into the unlock groove 51a, and the shaft portion 40c engages with the lock groove 51b. A state substantially the same as the state immediately after the password input shown in FIG. This situation is as shown in FIG.

In addition, the lock pin 40 that has not entered the password is prevented from moving upward by the engaging piece 70 engaging with the lower opening edge of the through hole 39.
On the other hand, the first notch groove 71 and the engaging shaft portion 40b move immediately above the hole 51, the second notch groove 73 opens into the lock groove 51b, and the shaft portion 40c engages with the unlock groove 51a. A state substantially similar to the state shown in FIG.

Thereafter, the pressing operation of the reset button 9 is released, the reset button 9 is pushed up, and the reset pin 41 is pushed up by the centering spring 76 to restore their original shape.
Thus, the locking piece 77 of the reset pin 41 engages with the lower opening edge of the through hole 39 and is prevented from moving upward, while the reset block 29 is moved forward by the elasticity of the reset block spring 49. Move and restore original position.

For this reason, the engaging part 46 moves so as to be engageable immediately below the taper surface 70a or 70b, and recovers the same state as in FIG. 21 or FIG.
In this way, after the unlocking trouble is removed and the unlocked state of the lock plate 30 is restored, the push button 8 of the lock pin 40 that has been entered as a password is pressed, and the unlocking operation is performed by depressing the lock pin 40. Try again.
As described above, according to the present invention, the unlocking obstacle can be easily removed by pushing down the reset pin 41.

Such an unlocking failure may be caused by accidentally pressing the lock pin 40 that is not input at the time of unlocking as described above, or by bringing the mail into contact with the push button 8 when the mail is inserted. Even if the lock pin 40 that has not been input is pushed down, the same unlocking trouble occurs.
Therefore, at the time of unlocking, it is desirable to depress the reset pin 41 in advance before pressing the lock pin 40 that has entered the password, and remove the unlocking obstacle in advance, regardless of whether or not there is an unlocking obstacle.

When changing the password after attaching the button lock 3 to the cover plate 2, for example, the cover plate 2 is opened and the positioning mark 91 of the lock pin 40 is exposed on the inner surface. Based on the mark 91, the presence or absence of a password input of the lock pin 40 is confirmed, and the engagement portion of the above-mentioned tool is engaged with the engagement groove 76 of the lock pin 40 that has been password-input. By rotating 180 °, the password input of the lock pin 40 is deleted, and the existing password is deleted.
After that, based on the newly established password, the engagement portion of the above-mentioned tool is engaged with the engagement groove 76 of the lock pin 40 for inputting the password, and this is rotated 180 ° around the axis to newly input the password. Set a new PIN.
In this way, the personal identification number can be easily changed, and its protective ability can be improved.

  As described above, the button lock of the present invention can reduce the number of parts, can be assembled rationally and easily, and can be easily manufactured with small size, light weight and inexpensively, and can be easily and reliably locked and unlocked. For example, it is suitable for a lock of a mailbox.

It is a perspective view which shows the mailbox which applied this invention. It is a perspective view which expands and shows the button lock of this invention. It is the perspective view which decomposes | disassembles and shows the principal part of the button lock of this invention, and has shown the condition seen from the front. It is the perspective view which decomposes | disassembles and shows the principal part of the button lock of this invention, and has shown the condition seen from the back in assembly order. It is an expanded sectional view of the lock body along the AA line of FIG.

It is an expanded sectional view of the lock main body which follows the BB line of FIG. It is sectional drawing of the reset block which follows the CC line of FIG. It is sectional drawing of the reset block which follows the DD line | wire of FIG. It is a top view of the lock pin guide block applied to the button lock of this invention. FIG. 10 is a cross-sectional view taken along the line E-E in FIG. 9, showing an assembled state of the lock cover, the lock pin, and the reset pin.

It is a top view of the lock cover applied to the button lock of this invention. It is sectional drawing in the FF line of FIG. It is sectional drawing thru | or a front view which decomposes | disassembles and shows the principal part of the button lock of this invention, and has shown in those assembly order. The lock pin applied to the button lock of this invention is shown, The figure (a) is the front view, The figure (b) is the top view, The figure (c) is the GG line of the figure (a). FIG. 4D is a cross-sectional view taken along the line H-H in FIG. 4A, and FIG. 5E is a cross-sectional view taken along the line I-I in FIG. The reset pin applied to the button lock of this invention is shown, The figure (a) is the front view, The figure (b) is the top view, The figure (c) is the JJ line of the figure (a). FIG. 4D is a cross-sectional view taken along the line KK in FIG. 4A, and FIG. 5E is a cross-sectional view taken along the line LL in FIG.

It is sectional drawing which shows the plan view of the lock plate applied to this invention, and the condition before password input of a lock pin. FIG. 3 is a plan view of a lock plate applied to the present invention, and a cross-sectional view showing a situation after a lock pin password is input. It is sectional drawing which shows the plan view of the lock plate applied to this invention, and the condition in the middle of unlocking of a lock pin. FIG. 3 is a plan view of a lock plate and a reset block applied to the present invention, and a cross-sectional view showing a state before a lock pin password is input. FIG. 3 is a plan view of a lock plate and a reset block applied to the present invention, and a cross-sectional view showing a situation after a lock pin password is input.

It is an expanded sectional view which follows the MM line of FIG. It is an expanded sectional view which follows the NN line | wire of FIG. FIG. 20 is an enlarged cross-sectional view taken along the line OO in FIG. 20, showing the unlocked state of the lock pin applied to the present invention after password input in order, FIG. 20 (a) showing the lock pin immediately after password input, Fig. (B) shows the situation where the lock pin is shifted obliquely immediately after the unlocking operation by pressing the lock pin. Fig. (C) shows the locking piece of the lock pin and the engaging portion of the reset block. FIG. 4D shows a situation where the lock pin is reset by operating the reset pin and moving the reset block. FIG. 4 is a plan view of a lock plate applied to the present invention, a plan view of a reset block, and a cross-sectional view showing a situation when the lock pin is unlocked. The plan view of the lock plate and the reset block applied to the present invention, and the situation immediately after the reset pin is moved by operating the reset pin and resetting the lock pin are shown.

It is sectional drawing which shows the locking state of the button lock of this invention, and the assembly state of an operation lever. It is sectional drawing which shows the unlocked state of the button lock of this invention, and the operating state of an operation lever.

Explanation of symbols

3 button lock 7 lock cover
12 Operation lever
28 Lock pin holder 29 Reset block

30 lock plate 39 through hole 40 lock pin 40b first engagement portion (engagement shaft portion)
40c 2nd engaging part (engaging shaft part)

41 Reset pin 42 Pipe hole 46 Engagement part 47 Engagement part 51 Borehole

64 Recessed hole 65 Long hole 70 Locking piece 77 Locking part

Claims (7)

  One or a plurality of lock pins that are pressed while holding specific password information and can be biased upward, a lock pin press formed with one or a plurality of through holes through which the lock pins can be inserted, and the lock pins A lock plate having one or more removable holes, and a reset block having one or more through holes through which the lock pins can be inserted and movable in the same direction as the lock plate. An engagement portion that can be engaged with and disengaged from the hole and an engagement piece that can be engaged with a mouth edge portion of the through hole are provided on the lock pin, and the lock plate is operated to lock and unlock the operation lever. When the engagement portion is engaged with the slot, the lock plate is prevented from moving and locked, and when the engagement portion is released from the slot. , Button locks that can be unlocked by moving the lock plate An engaging portion projecting from the through hole of the reset block, and an engaging piece of the lock pin is provided in the engaging portion so as to be engageable, and when unlocking to press the lock pin, The locking piece is engaged with the engaging portion, the lock pin is provided so as to be able to shift obliquely in the protruding direction of the engaging portion, and after the engagement between the locking piece and the engaging portion is released, the lock A button lock characterized in that a pin is raised upright to engage and hold the locking piece and the engaging portion.   The button lock according to claim 1, wherein the locking piece and the engaging portion are engaged and held so that the unlocked state of the lock pin can be held.   The button lock according to claim 1, wherein a long hole is formed in a concave direction of the lock pin in a concave hole of a lock cover that is inserted through a lower end portion of the lock pin.   4. The button lock according to claim 1, wherein the upper shaft portion of the lock pin is formed in a taper shape.   First and second engaging portions are provided at the upper and lower positions below the locking piece of the lock pin, and the first and second engaging portions are arranged 180 degrees out of phase with each other. The first engagement portion is disposed immediately above the fistula, the second engagement portion is disposed to be engageable with the fistula, and when unlocking to press the lock pin, the first engagement portion is the fistula. The button lock according to claim 1, wherein the second engaging portion can be moved directly below the fistula.   A reset pin is inserted into one through hole of the reset block in parallel with the lock pin, and a locking piece provided on the reset pin is provided to be engageable with a taper surface facing the through hole, 2. The button according to claim 1, wherein when the lock pin that presses the reset pin is reset, the engagement between the engagement portion of the reset block and the locking piece of the lock pin can be released through the movement of the reset block. Tablets.   The button lock according to claim 1 or 5, wherein the engagement between the engaging portion of the reset block and the locking piece of the lock pin is released, and the lock pin can be returned to the state at the time of password input.

Images