JP2011168983A - Dial lock mechanism-incorporated type pad lock - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dial lock mechanism-incorporated type pad lock associated with a doubling of pull-out resistance of a shackle. <P>SOLUTION: A shackle shaft hole and a shackle receiving hole are provided in parallel in a body; a lock pin hole, which makes the shackle shaft hole and the shackle receiving hole communicate with each other, is provided; a dial lock mechanism is disposed in an intermediate portion between the shackle shaft hole and the shackle receiving hole; a cord ring supporting hole of a partition wall portion of the body is provided in parallel with the shackle shaft hole; first and second pin receiving grooves are provided in inner surfaces of linear portions of base and leading ends of the shackle, respectively; and inner ends of first and second lock pins housed in the lock pin holes are provided with first and second driven cam portions which abut on a driving cam portion of a center shaft, respectively. When the center shaft is in an upper limit position, an outer end cam portion of the first lock pin is engaged with the first pin receiving groove of the shackle, and an outer end cam portion of the second lock pin is engaged with the second pin receiving groove of the shackle, so that the shackle can be restrained by the body. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a padlock that is constrained to a main body by a locking operation of a lock mechanism that includes a shackle that is rotatably and slidably inserted into the main body.

  As described in Patent Document 1, in the conventional padlock, a shackle shaft hole into which the proximal end straight portion of the shackle is inserted is provided at one end portion of the main body, and the distal straight portion of the shackle is provided at the other end portion of the main body. The shackle receiving hole to be inserted is provided parallel to the shackle shaft hole, and the cylinder locking mechanism is built in between the shackle shaft hole, the shackle and the shackle receiving hole, and the lock plate equipped in conjunction with the rotor of the cylinder locking mechanism is attached to the tip of the shackle. The shackle is restrained and held by the main body by engaging with the lock receiving groove of the straight portion.

  Since the place where the shackle in the locked state is restrained to the main body in this way is one place of engagement between the lock plate groove and the lock receiving groove of the straight end of the shackle, when the large pulling force is applied, There is a risk that the shackle is pulled out of the main body without going through the normal process of unlocking the cylinder locking mechanism by breaking the engaging portion by the pulling force acting in one place.

JP 2004-285706 A

  An object of the present invention is to provide a padlock built-in type padlock that has a double resistance to pulling out a shackle.

  Referring to the drawings with reference numerals, the features of the present invention are that the shackle 2 is restrained with respect to the main body 1 by the dial lock mechanism 20, and the base end straight portion 15 and the front end straight portion of the shackle 2 formed into a U shape are bent. 17, the first lock pin 9 and the second lock pin 10 interlocking with the center shaft 3 of the dial lock mechanism 20 are used to escape the proximal end straight portion 15 from the shackle shaft hole 16 and from the shackle receiving hole 18. That is, the tip straight portion 17 is prevented from escaping.

More specifically, a shackle shaft hole 16 into which the proximal straight portion 15 of the shackle 2 is inserted is provided at one end of the main body 1, and the distal straight portion 17 of the shackle 2 is inserted into the other end of the main body 1. A shackle receiving hole 18 is provided in parallel with the shackle shaft hole 16, and a lock pin hole 19 that connects the shackle shaft hole 16 and the shackle receiving hole 18 is provided in the upper part of the main body 1. The dial lock mechanism 20 is disposed in the main body 1, the assembly of the dial 4 and the cord ring 5 is stored in the dial storage portion 23 of the main body 1, and the cord ring support hole 25 of the partition wall portion 24 is parallel to the shackle shaft hole 16. The first pin receiving groove 27 and the second pin receiving groove 28 are provided on the inner surfaces of the proximal straight portion 15 and the distal straight portion 17 of the shackle 2, and the drive cam portion 2 is provided on the head of the center shaft 3. The first driven cam portion 30 and the second driven cam portion 30 that contact the drive cam portion 29 of the center shaft 3 at the inner ends of the first lock pin 9 and the second lock pin 10 accommodated in the lock pin hole 19 are provided. A driven cam portion 31 is provided.
When the center shaft 3 slides to the upper limit position, the outer end cam portion 32 of the first lock pin 9 engages with the first pin receiving groove 27 of the shackle 2, and the outer end cam portion of the second lock pin 10. When 33 is engaged with the second pin receiving groove 28 of the shackle 2, the shackle 2 is restrained by the main body 1, and the dial 4 is rotated to match the unique password, the cord protrusion 22 of the cord ring 5. Comes to a position facing the cord projection escape groove 26 of the partition wall portion 24, and the center shaft 3 can be pushed down and slid.

  In the padlock of the present invention, the center shaft 3 of the dial lock mechanism 20 is at the upper limit position in the locked position where the shackle 2 is restrained by the main body 1, and the first driven cam portion 30 is driven by the drive cam portion 29 of the center shaft 3. The outer end cam portion 32 of the first lock pin 9 pressed is engaged with the first pin receiving groove 27 of the base end straight portion 15 of the shackle 2, and the second cam cam portion 29 of the center shaft 3 also Since the outer cam portion 33 of the second lock pin 10 pressed by the driven cam portion 31 is engaged with the second pin receiving groove 28 of the tip straight portion 17 of the shackle 2, the shackle 2 has the main body 1. Are restrained at two places. Therefore, the external force forcibly pulling out the shackle 2 from the main body 1 without going through the regular process of unlocking the dial lock mechanism 20 is divided into two, and the resistance to pulling is doubled.

  The pulling force applied to the shackle 2 acts on the outer end portion of the first lock pin 9 via the first pin receiving groove 27 of the base end straight portion 15 of the shackle 2, while the tip straight portion of the shackle 2 The first lock pin 9 and the second lock pin are accommodated in the lock pin hole 19 of the main body 1, while acting on the second lock pin 10 via the 17 second pin receiving groove 28. Therefore, it is finally received by the inner surface of the lock pin hole 19, and no pulling force acts on the components of the dial lock mechanism 20 including the center shaft 3. Therefore, the dial lock mechanism is not destroyed violently.

  When the assembly of the dial 4 and the cord ring 5 is rotated and adjusted to a unique password, the cord projection 22 of the cord ring 5 comes to a position facing the cord projection clearance groove 26 of the partition wall portion 24. In this state, when a pulling force is applied to the shackle 2, the outer end cam portion 32 of the first lock pin 9 is pushed by the first pin receiving groove 27 of the proximal end straight portion 15 of the shackle 2, thereby While the lock pin 9 slides inward, the outer end cam portion 33 of the second lock pin 10 is pushed by the second pin receiving groove 28 of the straight end portion 17 of the shackle 2, whereby the second lock pin 10 is moved. The inner cam slides and the driven cam portion 31 of the first lock pin 9 and the driven cam portion 31 of the second lock pin 10 push the drive cam portion 29 of the center shaft 3. It is pushed down against the bias of the center shaft spring 7, so that the code projections 22 of the code ring 5 enters the code protrusion escape groove 26 of the partition wall 24. Since a single operation of arranging the code of the dial 4 on a unique personal identification number is constrained at two locations without delay in timing, the unlocking operation is easy and accurate.

FIG. 1 is a front view of a padlock built-in type padlock according to one embodiment of the present invention. FIG. 2 is a left side view of the padlock of FIG. 3 is a bottom view of the padlock of FIG. 4 is a cross-sectional view taken along line AA in FIG. FIG. 5 is a horizontal sectional view of the padlock of FIG. FIG. 6 is a perspective view showing the assembly procedure of the padlock of FIG. FIG. 7 is a plan view of a dial used in the dial lock mechanism of the padlock of FIG. FIG. 8 is a vertical sectional view of the dial of FIG. FIG. 9 is a bottom view of the dial of FIG. 10 is a plan view of a cord ring used in the dial lock mechanism of the padlock of FIG. FIG. 11 is a front view of the cord ring of FIG. 12 is a vertical sectional view of the cord ring of FIG. 13 is a bottom view of the cord ring of FIG. FIG. 14 is a front view of a center shaft used in the dial lock mechanism of the padlock of FIG. FIG. 15 is a rear view of the center shaft of FIG. FIG. 16 is a bottom view of the center shaft of FIG. FIG. 17 is a front view of a dial click leaf spring used in the dial lock mechanism of the padlock of FIG. 18 is a horizontal sectional view of the dial click leaf spring of FIG. FIG. 19 is a plan view of a change key used in the dial lock mechanism of the padlock shown in FIG. FIG. 20 is a front view of the change key of FIG. FIG. 21 is a front view of a decorative board used for the dial lock mechanism of the padlock of FIG. 22 is a left side view of the decorative board of FIG. FIG. 23 is a bottom view of the decorative board of FIG. 24 is a left side view of the main body of the padlock of FIG. 25 is a cross-sectional view taken along line BB in FIG. 26 is a cross-sectional view taken along the line CC of FIG. 27 is a cross-sectional view taken along the line DD of FIG. FIG. 28 is a front view of the shackle used in the padlock of FIG. FIG. 29 is a front view of a first lock pin used in the padlock of FIG. 30 is a front view of a second lock pin used in the padlock of FIG.

  In the illustrated embodiment, a shackle shaft hole 16 into which the base end straight portion 15 of the shackle 2 is rotatably and slidably inserted is provided at one end of the main body 1, and the tip of the shackle 2 is provided at the other end of the main body 1. A shackle receiving hole 18 into which the straight portion 17 is slidably inserted is provided in parallel with the shackle shaft hole 16, and the base end straight portion 15 of the shackle 2 is slid in the pushing-up direction by the shackle spring 11 and provided in the main body 1. The stopper 13 prevents the base end straight portion 15 of the shackle 2 from escaping from the shackle shaft hole 16. The stopper 13 is formed of a spring pin driven into the horizontal hole 64 of the main body 1, and is a vertically long shape formed on the inner side surface of the base end straight portion 15 of the shackle 2 and below the first pin receiving groove 27. The stopper groove 34 is engaged.

  A lock pin hole 19 that connects the shackle shaft hole 16 and the shackle receiving hole 18 is formed at right angles to the shackle shaft hole 16 and the shackle receiving hole 18. The main body 1 is provided with a drain hole 65 communicating with the bottom of the shackle shaft hole 16 and the shackle receiving hole 19. The dial lock mechanism 20 incorporated in the main body 1 at the intermediate portion between the shackle shaft hole 16 and the shackle receiving hole 18 includes a center shaft 3, a plurality of dials 4, a plurality of cord rings 5, an end ring 6, and a spring for the center shaft. 7, comprising a dial click leaf spring 8.

  A holding hole 35 into which the code ring 5 is fitted is provided at the center of the four dials 4, and ten inner peripheral cord grooves 21 are provided at equal angular intervals on the inner peripheral surface of the holding hole 35. . One cord projection 22 is provided on the outer peripheral surface of the four cord rings 5. By engaging the cord projection 22 with any one of the inner cord grooves 21, The code ring 5 is assembled. The outer peripheral surface of each dial 4 is equally divided into ten sections with the click groove 36 as a boundary, numerals 0 to 9 are engraved, and display paint is filled.

In the main body 1, four dial storage portions 23 separated by a partition wall portion 24 are formed in parallel with the lock pin hole 19. A cord ring support hole 25 into which a part of the code ring 5 is fitted is provided at the center of the partition wall 24, and the cord protrusion 22 can enter the inner peripheral surface of the code ring support hole 25. A protrusion escape groove 26 is provided.
The assembly of the dial 4 and the cord ring 5 in which the cord protrusion 22 is engaged with the inner circumferential cord groove 21 is stored in the dial storage portion 23 and can be rotated around the center shaft 3.

  A dial click leaf spring 8 is fixed to the main body 1 in order to hold the dial 4 and the cord ring 5 at a specific rotational position selected by the user. Four pairs of left and right click arms 37 protrude from the dial click leaf spring 9, and the tip of the click arm 37 is elastically engaged with the click groove 36 on the outer peripheral surface of the dial 4. Is held at the selected rotational position. When the dial 4 is rotated, a click feeling is obtained by the engagement sound between the click arm 37 and the click groove 36.

As shown in FIG. 6, when the dial lock mechanism 20 is assembled, the numbers of the four dials 4 are set to 0 and inserted into the dial storage portion 23 of the main body. The four cord rings 5 are fitted to the center shaft 3 with the chamfered surfaces 47 of the cord protrusions 22 aligned with the base end side of the center shaft 3, and the cord protrusions 22 are aligned in the lower row. The center shaft 3 fitted with the cord ring 5 is inserted into the cord ring support hole 25 of the partition wall portion 24 and the holding hole 35 of the dial 4. This insertion is performed with the slit groove 43 of the center shaft 3 aligned with the illustrated direction.
The password at the time of assembly is “0-0-0-0”. To set another password, the change key 39 is operated in the procedure described later. For example, if the assembly angle of the assembly of the uppermost dial 4 and cord ring 5 is changed by 36 degrees, the new password is “1-0-0-0”.

  A part of the outer peripheral portion of the dial 4 is fitted to the main body 1 and protrudes forward and backward from the window hole 48 of the decorative plate 12. The substrate portion 52 of the dial click leaf spring 8 is provided with an opening 53 through which the outer periphery of the dial 4 passes. In the two rectangular fixing holes 61 of the bottom plate portion 49 of the decorative plate 12, the caulking projections 51 on the bottom surface portion of the main body 1 are inserted, and the decorative plate 12 is attached by the caulking process of the caulking projection 51. It is fixed to the main body 1. The positioning ribs 58 of the decorative plate 12 engage with the positioning grooves 60 formed in the central portion of the main body 1.

All the cord ring support holes 25 of the partition wall portion 24 are formed in parallel with the shackle shaft hole 16 and the shackle receiving hole 18. The E-ring 14 is fitted and fixed in the outer peripheral groove 38 at the lower end portion of the center shaft 3. An end ring fitting hole 55 is provided in alignment with the cord ring support hole 25 at the center lower end portion of the main body 1. The end ring 6 fitted into the fitting hole 55 engages with the outer peripheral vertical groove 54 of the end ring 6 and the inner peripheral protrusion 56 of the fitting hole 55, so that the end ring 6 cannot rotate with respect to the main body 1. is there. The annular protrusion 57 on the lower surface portion of the end ring 6 is fitted in the circular through hole 50 of the bottom plate portion 49 of the decorative plate 12.
A center shaft spring 7 is inserted between the end ring 6 and the E-ring 14 to push up and urge the center shaft 3.

  The lock pin hole 19 is divided into two by the center shaft 3, and the first lock pin 9 is slidably received in one side portion thereof, and the second lock pin 10 is slidably received in the other side portion of the lock pin hole 19. Has been. The outer peripheral shoulder 63 of the second lock pin 10 contacts the inner peripheral shoulder 62 of the lock pin hole 19, so that the second lock pin 10 does not escape from the lock pin hole 19.

  When the center shaft 3 is in the upper limit position, the center shaft 3 enters the center portion of the lock pin 19 and the first conical driven cam portion 30 is pushed by the conical drive cam portion 29 of the center shaft 3. The first lock pin 9 and the second lock pin 10 whose second conical driven cam portion 31 is pushed by the drive cam portion 29 of the center shaft 3 are pushed outward. As a result, the conical outer end cam portion 32 of the first lock pin 9 is engaged with the first pin receiving groove 27 of the base end straight portion 15 of the shackle 2, while the conical shape of the second lock pin 10 is engaged. Since the outer end cam portion 33 engages with the second pin receiving groove 28 of the distal straight portion 17 of the shackle 2, both the proximal straight portion 15 and the distal straight portion 17 of the shackle 2 are restrained by the main body 1.

  A hollow portion 41 into which the center pin 40 of the change key 39 enters is concentrically formed at the base end portion of the center shaft 3. A vertical groove 42 is formed in the hollow portion 41 in the diametrical direction from the base end side. A slit groove 43 having an opening angle of 180 degrees is formed in the middle of the groove 42. The center pin 40 of the change key 39 is movable in the axial direction with respect to the key knob 44, and has a lead pin 45 that engages with the slit groove 43 through the longitudinal groove 42 at the tip. A puller ring 59 is connected to the base end portion of the center pin 40.

  When the PIN code of the dial lock mechanism 20 is changed to another number combination, the center pin 40 of the change key 39 is inserted into the hollow portion 41 of the center shaft 3 and the drawer pin 45 is inserted into the slit groove 43 of the center shaft 3. The center pin 40 is pulled out by engaging. Since the inner circumferential protrusion 46 of the end ring 5 is engaged with the longitudinal groove 42 of the center shaft 3, the center shaft 3 is not rotated. In the state where the center shaft 3 is pulled out for a limited stroke by the change key 39, the engagement between the cord protrusion 22 of the cord ring 5 and the inner peripheral cord groove 21 of the dial 4 is released, and the dial 4 freely rotates. After the dial 4 is rotated in units of 36 degrees, when the withdrawal by the change key 39 is stopped, the center shaft 3 is pushed up by the action of the spring 7 for the center shaft, and the cord protrusion 22 of the cord ring 5 Engage with the circumferential cord groove 21. As a result, the unique password of the dial lock mechanism 20 is changed.

DESCRIPTION OF SYMBOLS 1 Main body 2 Shackle 3 Center shaft 4 Dial 5 Cord ring 6 End ring 7 Center shaft spring 8 Dial click leaf spring 9 First lock pin 10 Second lock pin 11 Shackle spring 12 Dressing plate 13 Stopper 14 E- Ring 15 Shackle base straight portion 16 Shackle shaft hole 17 Shackle tip straight portion 18 Shackle receiving hole 19 Lock pin hole 20 Dial lock mechanism 21 Dial inner circumferential code groove 22 Cord ring cord protrusion 23 Dial storage portion 24 of main body Main body partition wall portion 25 Cord ring support hole 26 Cord protrusion escape groove 27 First pin receiving groove 28 at the base end straight portion of the shackle Second pin receiving groove 29 at the straight end portion of the shackle 29 Drive cam portion 30 of the center shaft First driven cam portion 31 of the first lock pin Second lock cam second driven cam portion 32 First lock pin outer end cam portion 33 Second lock pin outer end cam portion 34 Stopper groove 35 at the base end straight portion of the shackle Dial holding hole 36 Dial Click groove 37 Click arm 38 of dial click leaf spring 38 Center shaft outer peripheral groove 39 Change key 40 Change key center pin 41 Center shaft base end cavity 42 Center shaft base end vertical groove 43 Center shaft Slit key 44 at the base end of the key change key key knob 45 change key lead pin 46 inner ring protrusion 47 of the end ring chamfered surface 48 of the code ring of the code ring 49 window hole 49 of the decorative plate Circular through hole 51 in bottom plate portion of decorative plate Clamping protrusion 52 in bottom portion of main body Dial click plate Sub-plate part 53 Dial-opening plate spring opening 54 End ring outer peripheral vertical groove 55 End ring fitting hole 56 End ring fitting hole inner peripheral protrusion 57 End ring annular protrusion 58 Decorative plate positioning Rib 59 for change key pulling ring 60 for main body positioning groove 61 for fixing decorative plate 62 inner peripheral shoulder portion 63 for lock pin hole outer peripheral shoulder portion 64 for second lock pin horizontal hole 65 for fixing stopper of main body Body drain hole

Claims (1)

  A shackle shaft hole 16 into which the base end straight portion 15 of the shackle 2 is inserted is provided at one end of the main body 1, and a shackle receiving hole 18 into which the tip straight portion 17 of the shackle 2 is inserted at the other end of the main body 1. A lock pin hole 19 that is provided in parallel with the shackle shaft hole 16 and connects the shackle shaft hole 16 and the shackle receiving hole 18 is provided in the upper portion of the main body 1, and the main body 1 is dialed at an intermediate portion between the shackle shaft hole 16 and the shackle receiving hole 18. The lock mechanism 20 is arranged, the assembly of the dial 4 and the cord ring 5 is stored in the dial storage portion 23 of the main body 1, the cord ring support hole 25 of the partition wall portion 24 is provided in parallel with the shackle shaft hole 16, and the shackle 2 A first pin receiving groove 27 and a second pin receiving groove 28 are provided on the inner surfaces of the proximal straight portion 15 and the distal straight portion 17, and a drive cam portion 29 is provided on the head of the center shaft 3 to lock The first driven cam portion 30 and the second driven cam portion 31 that contact the drive cam portion 29 of the center shaft 3 at the inner ends of the first lock pin 9 and the second lock pin 10 accommodated in the hole 19. When the center shaft 3 is slid to the upper limit position, the outer end cam portion 32 of the first lock pin 9 is engaged with the first pin receiving groove 27 of the shackle 2, and the second lock pin 10 is When the end cam portion 33 is engaged with the second pin receiving groove 28 of the shackle 2 and the shackle 2 is restrained by the main body 1, the dial 4 is rotated and adjusted to the unique PIN number. A padlock with a built-in dial lock mechanism in which the cord projection 22 comes to a position facing the cord projection relief groove 26 of the partition wall 24 and the center shaft 3 can be pushed down and slid.