JP3120196U - Combination lock with rotatable knob - Google Patents

Abstract

An improved combination lock having a knob attached to control a locking and unlocking mechanism.
The combination lock includes a plurality of buttons movably received in the casing and a received knob rotatable in the casing. When a particular button is depressed, turning the knob from the first position to the second position restricts the ball in the button that has moved downward into the limiting hole in the button by the abutment surface of the frame. Rotation of the knob to the third position locks the pin of the pressed button in the longitudinal groove and limits it. When pushing the return rod, the arm received by the arm receiver can be released. Release of the core alone with respect to the rotor and body assembly can move the second block to return all pins to their original position in preparation for the next use of the rocker.
[Selection] Figure 1

Description

  The present invention relates to a combination lock, and more particularly, to a combination lock having a knob that is rotatably attached to lock or unlock a locking mechanism.

  In public places such as stations, supermarkets, and shopping streets, many storage boxes or lockers are installed for temporary storage of user belongings. This type of locker typically has a built-in unlocking mechanism that is operated by an administrator when the key of the locker is lost or for some reason the key of the specific locker is lost. However, since there is no way for an administrator to monitor all user lockers, the user may copy the locker key when or after renting the locker. An unauthorized user may use the copied key to open the locker and steal things in the locker.

  The present invention provides an improved lock that alleviates the above problems.

  The main object of the present invention is to provide an improved combination lock having a combination lock and a knob attached to control the locking and unlocking mechanism of the lock. The knob is controlled by a series of combination numbers and a master key. Therefore, whatever combination is set for unlocking, the administrator always uses the master key to reset the locking mechanism and resets the locking mechanism to its original state for the next use. The locking mechanism can be restored as much as possible.

  To achieve the above object, a lock according to the present invention includes a plurality of buttons that are linearly movable with respect to a casing and that are movably attached to a returning seat, and are movably received in the casing, and A limiting seat limiting seat operably coupled to the button; and a knob rotatably mounted on the casing and having a plurality of bosses for selective movement to the limiting seat and the return seat. Therefore, after the knob is rotated in the first direction by pressing the first boss to move the restriction seat and the return seat from the first position to the second position, the button is pushed down from the first position to the second position. Sometimes the arm from the return seat is received in a notch formed in the button, which button is pushed to maintain the particular button in the second position. Due to the engagement of the return seat and the specific button, the return seat is also maintained in the second position. In addition, when the knob is rotated in a second direction opposite to the first direction, the restricting seat is provided between its casing and the restricting seat to its first position, and the button pin is freely axial with respect to the restricting seat. It is returned by the force of the spring to move to. As a result of the movement of the return seat by the second boss, the arm from the return seat is released from the cutout of the button. The pin is then restricted by a restricting seat and the combination lock is in the locked state.

  In addition, when the particular button is in the second position, the return rod is movably attached to the casing and is operatively attached to the return seat so that pressing the return rod releases the button pin from the restriction seat. It is connected.

  Furthermore, the master key is applied to a knob having a core. Therefore, when the combination lock is in the locked state, the master key in the core is turned, and the second boss presses the return seat and the frame to return the pin of the specific button to the original position. That is, the combination lock is prepared for the next use.

  Other objects, novel features, and benefits of the present invention will become more apparent from the following description with reference to the accompanying drawing abutment surface.

  1 and 2, the combination lock according to the present invention includes a casing 1, a return seat 2, a frame 3, a restriction seat 4, a button 5, and a knob 6.

  The casing 1 includes a bottom casing part 10 and a top casing part 11 fixed to the bottom casing part, both casing parts receiving a return seat 2, a frame 3, a restricting seat 4, a button 5 and a knob 6 between them. Provide space.

  The return seat 2 is movably received in the space of the casing 1 and includes a base 21 and a cover 22. The base 21 extends between a large number of first holes 211 provided through the base 21 so as to correspond to the first springs 12 respectively, and a side surface of the base 21 and an inner side surface forming the space of the casing 1. A number of double-seat springs 212 (only two shown). The return seat 2 is also shown in FIG. 2A and has a plurality of seats 213 formed on the base 21. The arm 214 is fixedly provided on each of the seats 213, and the free end of each arm 214 extends across the corresponding first hole 211. The cover 22 has a number of second holes 221 extending through the cover 22 so as to correspond to the seat 213 of the base 21.

  The frame 3 is U-shaped, and is provided on a first notch 31 provided on a side surface thereof, a rod 32 provided on a bottom contact surface of the first notch, and both inner side surfaces of the frame 3 facing each other. Between a plurality of second cutouts 33, a plurality of contact surfaces 34 formed between two adjacent second cutouts 33, and an inner surface of the casing 1 and an outer surface of each end of the frame 3 And a plurality of double-seat springs 35 (only two shown).

  The restriction seat 4 has a head portion 41 at its front portion, and the head portion has an elongated slot 411 formed through the head portion to movably receive the rod 32 of the frame 3. The restricting seat 4 includes a plurality of longitudinal grooves 42 formed on two opposing side surfaces of the restricting seat, a plurality of transverse grooves 43 formed on both outer surfaces so as to divide the longitudinal passage, and a restricting seat. And a third double-seat spring 44 disposed between the rear portion of the restricting seat and the inner surface of the casing 1 so as to exert a spring force on 4.

  Each button 5 is identical in construction to the other buttons, and only one button 5 is shown in detail in FIG. 2B. The button 5 includes a cap 51, a second spring 52 partially received by the cap, an extension 531 extending from the block 54 in two different directions, a top portion supporting the end of the second spring 52, and an arm receiver. 532, ie, a notch, a bottom portion having a channel 55 formed in the elongated portion 531, a cylinder 53 having an opening 56 formed in a side surface of the cylinder 53 communicating with the channel 55, and a block movably received in the cylinder. 54, a ball 57 projecting from a restriction hole 541 formed on the side surface of 54, a fourth double seat spring 571 received in the channel 55 so as to hit the ball, and a stopper 58 movably received in the channel 55. A pin 581 extending outwardly from the stop and the opening 56, and the bottom opening of the ball 57 and the channel 55. To accept a plug 59 that is received in Ubeku the channel and a stop 58 with two positioning recess or first positioning recess 582 and the second positioning recess 583. After assembly of the button 5, the first spring 12 is sandwiched between the stop 58 and the top surface of the bottom casing portion 10 and applies a spring force or reaction force to the cylinder 53.

  The knob 6 is shown in detail in FIG. 2C and comprises a rotor 61 and a main body 62 that is firmly engaged with the rotor and has a first block 621 and a recess 622 provided on the outer periphery of the block. The rotor 61 has a first passage 611, and the main body 62 has a second passage 623 communicating with the first passage 611. Further, the rotor 61 has an extending portion (no reference number) extending in the second passage 623 of the main body 62. This extension part of the rotor 61 has a shape in which the extension part does not move with respect to the second passage 623 after the extension part is received in the second passage 623 of the main body 62. That is, when the rotor 61 is rotated, the main body 62 is also rotated. Due to the communication between the first passage 611 and the second passage 623, the core 63 can be inserted into the first passage 611, and the free end of the core 63 becomes the same contact surface as the top surface of the rotor 61. The core 63 includes an extension part extending from the key hole 631 and the main body 62, and includes a second block 632 formed on the outer periphery of the extension part of the core 63.

  As shown in FIG. 2, the protective cap 13 is disposed on the button 5 and has a third hole 131 corresponding to the button 5, and each button 5 can extend out of the third hole 131. Further, the bottom of the cap 51 is held below the protective cap 13 by a flange 511 (FIG. 2B). That is, the diameter of the flange 511 is larger than the diameter of the third hole 131 of the protective cap 13.

  Further, a return rod 7 is provided on the return seat 2. The return rod 7 has a wedge-shaped head 71 formed at the bottom thereof, and a fifth double seat spring 72 whose end is firmly attached to the return rod 7. Corresponding to the return rod 7, the return seat 2 is provided with a wedge-shaped recess 215.

  When the combination lock according to the present invention is assembled, as shown in FIGS. 1 to 2C, the bottom portion of the column 53 of the button 5 includes a fixing cap 216 provided on the top of the return seat 2, a passage 222, and a bottom casing. 10 extends through the first hole 211 of the return seat 2 supported by the first spring 12 received by the first spring 12. Meanwhile, the restriction seat 4 is received in the frame 3 and the rod 32 is received in the elongated slit 411 of the restriction seat 4 so that the restriction seat 4 is movable relative to the frame 3 or vice versa. Thereafter, the protective cap 13 is firmly attached to the top of the button 5 so as to fix the position of the button 5 inside the bottom casing 10. Thereafter, the return rod 7 is inserted through the protective cap 13 by the fifth double seat spring located between the return rod 7 and the wedge-shaped recess 215. That is, the return rod 7 is supported by the return seat 2. The knob 6 is inserted into the bottom casing 10, and the head 41 of the restriction seat 4 is received in the recess 622 of the first block 621.

  Furthermore, the first double seat spring 212 for the return seat 2, the second double seat spring 35 for the frame 3 and the third double seat spring 44 for the restriction seat 4 are all located inside the receiving space of the casing 1. In position, each exerts a spring force on the return seat 2, the frame 3 and the restricting seat 4.

  Referring to FIG. 3A showing the original state of the combination lock according to the present invention, all the pins 581 of the button 5 are received in the longitudinal groove 43 and away from the joint between the lateral groove 43 and the longitudinal groove 42. Yes. Further, the ball 57 of the button 5 is received in the second notch 33 of the frame 3. As shown, the knob 6 has an arrow display 64 provided on the rotator 61, which is a reset stage that allows the operator to set a specific number sequence to activate the locking mechanism of the combination lock. Points to the state.

  Referring to FIG. 3B, before setting the number, each of the arms 214 of the return seat 2 is disposed on the outer periphery forming the arm receiver 532 of each button 5, while each ball 57 is a second of the button 5. It is received in the positioning recess 583. As shown in FIG. 3C, the ball 57 is in the second positioning recess 583 before the button 5 is pressed. Therefore, before setting any number to the combination lock according to the present invention, all the pins 581 are disposed in the lateral groove 43 and are separated from the joint between the lateral groove 43 and the longitudinal groove 42, so that the knob 6 is arranged in the first block 621. As a result of the engagement of the restricting seat 4 with the head 41, the restricting seat 4 and the frame 3 can be forcibly rotated so as to move inside the casing 1.

In the number setting state for the combination lock, referring to FIGS. 4A and 4B, in the original state for setting the number sequence, the knob 6 has the head 41 of the frame adjacent to the first block 621 and is recessed. The location 622 is located away from the head 41. When several buttons 5 are depressed with respect to the casing 1, all the arms 214 corresponding to the downwardly moving buttons 5 are received in the arm receivers 532 of the particular button 5 and are depressed to a lower position compared to the original position. The button 5 is held. Thereafter, rotation of the knob 6 in the counterclockwise direction, ie, from the first position to the second position as shown in FIGS. 4C and 4D, causes the head 41 to be received in the recess 622. This means that the restriction seat 4 has moved with respect to the frame 3.

  After the restricting seat 4 moves with respect to the frame 3, all the balls 57 including the ball corresponding to the button 5 moved downward are restricted in the restricting hole 541 by the contact surface 34 of the frame 3, and all the pins 581 are It is disposed at the joint between the horizontal groove 43 and the vertical groove 42. Under such circumstances, the user tries to fix the number setting to its original state, which is that all the balls 57 are pushed into the restriction hole 541 after the knob 6 has been rotated to the second position. Cannot be changed. As a result of all the balls 57 being restricted by the abutment surface 34, the balls 57 change from the second positioning recess 583 to the first positioning recess 582 even if more buttons 5 are depressed with respect to the casing 1. There is no.

In the determined number of fixed states , after all the pins 581 are located at the joints between the longitudinal grooves 42 and the lateral grooves 43 and the knob 6 is rotated so that the head 41 is received in the recess 622, the knob 6 is again turned on. When turned counterclockwise, ie, from the second position to the third position as shown in FIG. 4F, the second block 632 of the knob 6 causes the return seat 2 to move. That is, the second block 632 engages with the return seat 2 so as to move the return seat 2 to the inside of the casing 1, and releases all the arms 214 from the arm receiver 532. When all the arms 214 are released from the arm receiver 532, the pin 51 of the button 5 pushed downward with respect to the casing 1 moves into a part of the vertical groove 42 above the horizontal groove 43. Thereafter, the combination lock number sequence is set, and the combination lock is turned on.

  After the sequence is set for a combination lock, the user must use the combination lock to secure the personal belongings in places such as stations, bus stops, airports, restaurants where lockers are required. Can do. That is, after the personal belongings are stored in the locker, the user can turn the third block to the second position clockwise, thereby releasing the engagement between the second block 632 and the return seat 2. . Thereafter, as shown in FIG. 5, the pin 581 corresponding to the pressed button 5 is fixed inside the upper half of the longitudinal groove 42.

  Another way of fixing several sequences of combination locks according to the present invention after several buttons 5 have been pushed down with respect to the bottom casing 10 is shown below. After the arm 214 from the return seat 2 corresponding to the button 5 pushed downward is received by the arm receiver 532, the user causes the wedge-shaped head 71 to touch the outer periphery forming the wedge-shaped recess 1215. The return seat 2 is moved to the inside of the casing 1 to release the arm 214 from the corresponding arm receiver 532. Accordingly, the pin 581 of the selected button 5 is moved to the upper half of the longitudinal groove 42 by the first spring 12.

  Further, regarding the movement of the button 5, the following should be noted. After the selected button 5 is fixed, i.e., the number sequence is determined and fixed and the combination lock is locked, any unauthorized attempt to unlock the combination lock with a random number sequence will cause the wrong button 5 to The pin 581 is moved to the lower half of the longitudinal groove 42, and the combination lock is further locked. Under such a state, as shown in FIG. 6, some pins 581 remain in the upper part of the longitudinal groove 42, and some pins 581 remain in the lower part of the longitudinal groove 42.

  Therefore, referring to FIG. 7, when the user tries to open the combination lock previously locked, the user presses the pin 581 of the button 5 that is erroneously pressed at the joint between the vertical groove 42 and the horizontal groove 43. It is necessary to push the return rod 7 to return. The user then uses the correct combination to unlock the combination lock. Otherwise, even if the user uses the correct number sequence, the combination lock cannot be unlocked.

After the user returns the locker to the manager in the state where all the numbers are erased , the manager can separate the core 63 from the combination of the rotor and the main body 62 as shown in FIGS. The master key 64 can be inserted into the keyhole 631 of the core 63. Thereafter, the user can turn the core 63 to move the second block 632 simultaneously. The rotation of the second block 632 causes the second block 632 to move the frame 3 with respect to the restriction seat 4 and engage the frame 3 so that the second notch 33 is aligned with the ball 57 of the button 5. After the alignment of the ball 57 and the second notch 33, the fourth double seat spring 571 of the button 5 in which the pin 58 stays on top of the longitudinal groove 42 returns all the pins 581 to the joint between the longitudinal groove 42 and the lateral groove 43. For spring force.

  As is apparent from the above, the user can safely use the combination lock according to the present invention without worrying that the combination of numbers is illegally copied and stolen after the combination lock is used. When using a combination lock, the user can choose any combination of numbers to protect his belongings, and after the combination lock is used, the administrator can reset the combination of numbers, and as a result The user can freely select a favorite sequence.

  Even if the previously set number sequence is changed by an attempt to unlock the combination lock by entering any number sequence, pressing the return rod 7 resets the number pressed incorrectly. The user can still unlock the combination lock by entering the correct number sequence.

The perspective view of the combination lock which concerns on this invention. The disassembled perspective view of the combination lock shown in FIG. The disassembled perspective view of the return seat which comprises the said combination lock. The disassembled perspective view of the button which comprises the said combination lock. The disassembled perspective view of the knob which comprises the said combination lock. The schematic top view which shows the initial state of the said combination lock. FIG. 3 is a schematic transverse contact surface view showing a relationship between an arm and a button. FIG. 3 is a schematic transverse contact surface view showing a position of a ball in a button. FIG. 4 is a schematic transverse abutment view showing the arm received in the arm receiver after the button is pushed down with respect to the casing. FIG. 3 is a schematic top view showing a state in which the head of the frame is separated from the recess and the first block is engaged with the head. FIG. 6 is a schematic top view showing the result after the knob has been rotated counterclockwise from an initial position to a second position. The schematic top view which shows the state in which the said head was received in the recess of the 1st block of a knob. The schematic top view which shows the state which the head rotated from the 2nd position to the 3rd position in order to engage the 2nd block with the said head. FIG. 3 is a schematic transverse contact surface view showing the position of a pin. FIG. 4 is a schematic transverse abutment view showing the position of the pins after the sequence is determined and some buttons are pressed incorrectly. FIG. 3 is a schematic transverse abutment view showing that the movement of the return rod determines several sequences. FIG. 3 is a schematic top view showing that the insertion of a master key enables rotational driving of the core. FIG. 4 is a schematic top view showing that all balls are received in the second notch of the frame, allowing the user to reset the sequence of numbers.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Casing 3 Frame 4 Restriction seat 42 Vertical groove 43 Horizontal groove 5 Button 6, 581 Knob 61 Rotor 62 Main body 63 Core 621 1st block 632 2nd block 12 1st spring 212 1st double seat spring 33 Notch 34 Contact surface 35 2 Double seat spring 44 Third double seat spring 53 Cylinder 54 Block 55 Channel 56 Opening 541 Restriction hole
58 Stopper 571 Fourth double seat spring 214 Arm 532 Arm receiver 622 Recess 41 Head 541 Restriction hole 581 Pin 215 Wedge recess 71 Wedge head 64 Master key

Claims (3)

A casing (1);
A return seat (2) movably received in the casing;
A restricting seat (4) that is linearly movably received in the casing, and a transverse groove (43) formed on opposite sides of the restricting seat and opposite sides of the restricting seat so as to bisect the transverse groove. A restriction seat (4) having a longitudinal groove (42) formed in
A frame (3) selectively movable with respect to said restriction seat;
A plurality of buttons (5) selectively and movably received in the casing, operatively connected to the restriction seat and each having a pin (581);
A knob (6) rotatably received in a first position, a second position and a third position within the casing;
The knob includes a combined body of the rotor (61) and the body (62), and a core (63) selectively connected to the combined body.
The rotor / body combination has a first block (621) for selectively moving the restricting seat from the first position to the second position to fix the position of the moved button;
The core is associated with the restriction seat to release the moved button so that the combination lock is in the locked position when the moved button is fixed and the combination lock is in the unlocked state when the button is released. A second block (632) integrally formed with the core to selectively move the frame;
A first spring (12) is received between the button and the abutment surface of the casing to exert an elastic force on the moved button;
A first double seat spring (212) is received between the side of the casing and the return seat to return the return seat to its original position after the return seat is moved;
A second double seat spring (35) is received between the side of the casing and the frame to return the frame to its original position after movement of the frame;
A third double seat spring (44) is received between the side of the casing and the restriction frame to return the restriction seat to its original position after movement of the restriction seat;
Each button has a cylinder (53) extending in two different directions from the block (54), a channel (55) formed in the lower half of the cylinder, and a lower half of the cylinder in communication with the channel. An opening (56) formed on the side surface of the opening, and a restriction hole (541) that is formed on the side surface opposite to the opening and communicates with the channel so that the ball can move in and out of the restriction hole. And a stopper (58) provided in the channel for closing a bottom opening of the channel so as to receive a fourth double seat spring (571) between the stopper and the ball inside the channel ( 58)
The return seat has a number of arms (214) firmly received therein, each arm corresponding to and hitting the periphery of the button so that the button is lowered with respect to the casing from a first position to a second position. The free end of the arm corresponding to the button pressed downward is formed on the button pressed downward so as to hold the button pressed downward in the second position. The arm receiver (532)
Further, after the rotor is rotated so that the block can move the restricting seat with respect to the frame, the arm receiver (532) returns the button in the second position to the first position. Release means for releasing the arm (214) from the restriction of
The release means includes a recess (622) formed on a side surface of the first block (621) and a head (41) formed at a front portion of the restriction seat. A combination lock, wherein the pressed button is in the second position when received in place and the pressed button is in the first position when the head is away from the recess. The restricting seat includes a plurality of longitudinal grooves (42) formed on opposite side surfaces of the restricting seat, and a plurality of lateral grooves formed on opposite side surfaces of the restricting seat so as to bisect the longitudinal groove. 43), and the frame has a surface (34) formed on two opposed inner surfaces of the frame so as to restrict the ball within the restriction hole, and the ball is outside the restriction hole. A notch (33) formed between two adjacent faces so that it can exit
When the knob is in the first position, the knob (581) of the button is disposed and restricted in the transverse groove 43, away from the seam between the transverse groove (43) and the longitudinal groove (42), and the ball is Can move out of the restriction hole (541) to be received in the notch (33) in the frame, so that the button can be moved from the first position to the second position;
When the knob is in the second position, the pin (581) of the button is located at the joint between the longitudinal groove (42) and the transverse groove (43) as a result of the movement of the restricting seat by the first block relative to the frame. Yes,
When the knob is in the third position, the pin (581) corresponding to the button moved downward is set to the longitudinal groove (42) by the fourth double seat spring (571) so that the sequence of the combination lock is set. Moved to
A return rod (7) movably received in the casing is operatively connected to the return seat, and the return when the button is moved from the first position to the second position. The rod can move the return seat from the first position to the second position, and can release the arm from the button that has moved downward,
The return seat has a wedge-shaped recess (215), and the return rod has a wedge-shaped head (71) formed at a free end of the wedge-shaped head and the wedge-shaped recess. The combination lock according to claim 1, wherein the engagement moves the return seat.   A master key (64) selectively inserted into the core to separate the core from the rotor and body combination, the insertion of the master key rotating the core and the block; The restriction seat is configured to return the pin restricted in the longitudinal groove to the seam between the longitudinal groove and the transverse groove by the spring force from the fourth double seat spring received in the pressed button. The combination lock according to claim 2, which allows the second block to move with respect to the frame.

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