JPH04111874U - door lock handle - Google Patents

Abstract

(57) [Abstract] [Objective] To provide a small door lock handle with a simple structure that can completely prevent unauthorized unlocking. [Structure] A locking shaft 24 on which a key 27 is formed is rotatably inserted into a catch 20 fixed to a door 1. The drive pin 31 is fitted into the center of the lock shaft 24 so as to be slidable in the axial direction, and the key groove 27 is inserted.
By inserting the plate key 41 inside, the driving pin 31 is moved and the locking pin 36 of the locking shaft 24 with respect to the catch seat 20 is released.

Description

[Detailed explanation of the idea]

[Purpose of invention]

0001

[Industrial application field]

This invention is a door lock hand that locks the door using a drive pin that moves in the axial direction. Regarding ru.

0002

[Conventional technology]

As a lock handle for this type of door, there has been a Those described in the report are publicly known. This lock handle is shown in Figures 7 to 9. It was composed of 7 and 8, the receiving hole 2 formed in the door 1 has a receiving seat. 3 is inserted and fastened with a nut 4. Center of strike plate 3 against door 1 A locking shaft 6 is rotatably inserted into the shaft hole 5 formed to penetrate in the right angle direction. A grip handle 7 is integrally formed on the front surface facing downward. Also, the locking shaft 6 A latch plate 8 is fixed to the inner end surface parallel to the door 1, and the locking shaft 6 is attached to the front surface of the door 1. A blind hole is provided at right angles to the axial direction on the lower surface of the enlarged diameter portion 6a that protrudes from the A shaped keyway 9 is provided.

0003 On the other hand, the catch seat 3 is placed parallel to the axial direction and symmetrically with respect to the center line, up and down. Two pairs of small holes 10 are formed, and the locking shaft 6 also has a grip handle 7 located vertically downward. In this state, a small hole 11 is formed coaxially with the small hole 10. and these A driven pin 12 and a driving pin 13 are slidably inserted concentrically into the small holes 10 and 11. The tip 13a of the drive pin 13 is pushed into the keyway 9 by the spring 14. It is urged to come out. In addition, the plate key 15 inserted into the key 9 is shown in FIG. Four recesses 16 are formed so that the plate key 15 is inserted into the keyway 9. At this time, the tip 13a of the drive pin 13 fits into the recess 16.

0004 In the above configuration, when the plate key 15 is not inserted into the keyway 9, , the step part of the drive pin 13 is in contact with the front end step part of the small hole 11, and the tip 13a is It protrudes into the keyway 9. At this time, the driven pin 12 protrudes into the small hole 11 on the locking shaft 6 side. The lengths of the driven pin 12 and the driving pin 13 are set so that the length of the driven pin 12 and the driving pin 13 are The lengths of the book pins 12 and 13 are different. As a result, the locking shaft 6 is Rotation is stopped and locked via the driven pin 12.

[0005] Insert the plate key 15 into the keyway 9 and fit the tip of the drive pin 13 into the recess 16. Then, the driving pin 13 compresses the spring 14 via the driven pin 12 and retreats from the keyway 9. Ru. At this time, the depth of the recess 16 should be set in accordance with the length of each pin 12, 13. For example, the contact point between the driving pin 13 and the driven pin 12 is placed on the sliding surface 17 between the catch seat 3 and the locking shaft 6. Can be matched. In this state, the lock by the driven pin 12 is released. Therefore, the locking shaft 6 can be rotated, and the door 1 can be unlocked by the latch plate 8. 1 can be opened.

According to the conventional door lock handle configured as described above, Since the keyway 9 opens only downward, waterproof and dustproof effects can be obtained. Ma The combination of the depth of the recess 16 formed in the plate key 15 and the length of the pins 12 and 13 Unauthorized unlocking is difficult because the lock cannot be unlocked unless the lock is correct.

[0007]

[Problem that the idea aims to solve]

However, with the conventional door lock handles mentioned above, in order to prevent unauthorized unlocking, Since the length of the pins 12 and 13 is simply changed as a means of Even if you do not use a screwdriver or wire, it is not necessary to push the pins 12 and 13 in. It's not possible. In other words, the pins 12 and 13 are pushed in at various pushing depths. However, it is not always possible to completely prevent unauthorized unlocking. There was a problem.

[0008] Also, four driven pins 12, four driving pins 13, and four springs 14 are required. However, it also had the disadvantage of having a large number of parts and a complicated structure.

[0009] This invention was created in view of the above points, and is designed to completely prevent unauthorized unlocking. The purpose is to provide a small door lock handle with a simple structure that allows for It is something.

0010 [Structure of the idea]

[Means to solve the problem]

In order to achieve the above purpose, the present invention is fixed to the door and centered directly against the door. A seat has a shaft hole formed in a corner direction, and a seat is rotatably inserted into the shaft hole, and a seat is provided at the bottom of the front surface. A locking shaft with a keyway into which a plate key is inserted in a direction perpendicular to the axial direction; A tapered shaft that is slidably inserted in the axial direction at the center of the locking shaft. The end is biased so as to protrude into the keyway, and is axially opposed at a predetermined position on the outer periphery. a driving pin with a pair of locking holes formed in a direction perpendicular to the locking shaft; The receiving seat is mounted on one end of the outer side so as to be movable in a direction perpendicular to the axial direction. It has an engaging part that can be engaged with one of the plurality of recesses formed on the circumference, and has an inner part. left and right 1 having a protrusion that can be locked in a locking hole formed in the drive pin at one end of the side; The device includes a pair of locking pins and a spring that biases the locking pins in the direction of separating them. The tapered end of the drive pin is fitted into the plate-shaped key to drive the drive pin. Rotate and position the locking pin to a position where it fits into the locking hole of this drive pin. a first positioning groove and a position where the locking pin does not fit into the locking hole of the drive pin; It is characterized in that a second positioning groove for positioning is formed respectively.

[0011]

[Effect]

According to the above configuration, when the plate key is not inserted into the keyway and the lock is locked, multiple The tips of several drive pins are inserted into the second positioning groove when the plate key is pulled out of the keyway. When the locking pin is rotated, the protrusion of the locking pin does not fit into the locking hole of the drive pin, and the outer circumference are in contact. Therefore, the locking pin moves in the direction of separation via the protrusion. The engaging part at the outer end of the locking pin engages with the recess on the inner surface of the catch, and rotation of the locking shaft is prohibited. and locked.

0012 When the plate key is inserted into the keyway, the tapered tip of the drive pin will fit into the first positioning groove. is fitted and driven in accordance with the first positioning groove formed in advance at a predetermined angle and depth. The pin rotates and moves in the axial direction, and the protrusion of the locking pin fits into the locking hole of the drive pin. It becomes possible. As a result, the protrusion of the slider can be removed from the recess on the inner surface of the catch. The door can be opened by rotating the locking shaft.

[0013] Furthermore, according to the above configuration, there is only one drive pin and one spring, and the number of engagement pins is one. Since there are only two stop pins and the number of parts is reduced, the structure is simple and compact.

[0014]

【Example】

An embodiment of the present invention will be described below with reference to the drawings. An embodiment of the present invention is shown in FIGS. 1 to 6. In Figures 1 to 3, the door 1 has a A stepped cylindrical catch seat 20 is fitted into the received hole 2 and protrudes into the inside of the door 1. An outer diameter thread 20b is formed on the outer periphery of the small diameter portion 20a. To the outer diameter screw 20b A nut 21 is screwed onto the door 1, and the outer large diameter of the catch 20 is attached to the door 1 by the nut 21. Tighten the portion 20c via the packing 22a and ring washer 22b to secure the catch. 20 is fixed to door 1. Penetrating through the center of the catch 20 in a direction perpendicular to the door 1 A stepped round bar-shaped locking shaft 24 is rotatably fitted into the formed shaft hole 23. A latch plate 8 parallel to the door 1 is attached to the inner end surface of the locking shaft 24 via a washer 25. It is fixed by a bolt 26.

[0015] In addition, the lower part of the large diameter part 24a where the locking shaft 24 protrudes from the front surface of the door 1 is A blind hole-shaped keyway 27 is provided at right angles to the axial direction. In addition, locking shaft 24 An O-ring 28 is provided between the outer circumference of the small diameter portion 24b inside the door 1 and the inner circumference of the catch seat 20. The outer end surface of the catch seat 20 and the inner end surface of the large diameter portion 24a of the locking shaft 24 are An O-ring 29 is installed between them.

[0016] On the other hand, the center of the locking shaft 24 is slidably and rotatably driven parallel to the axial direction. A pin 31 is inserted. The tip 31a of the drive pin 31 can protrude into the keyway 27. Furthermore, the drive pin 31 is connected to a first shaft whose one end is locked to the locking plate 32. It is pressed by the other end of the pull 33 and urged in the direction of the keyway 27 .

[0017] In addition, the large diameter portion 24a of the locking shaft 24 has a symmetrical shape with respect to the center line as shown in FIG. A pair of round holes 34 are formed through the position at right angles to the axial direction. A locking pin 36 is fitted into each of the locking pins 36 so as to be slidable in the axial direction. of the locking pin 36 An engaging portion 36a with an enlarged diameter is provided at one end of the outside, and a projection is provided at one end of the inside. A portion 36b is provided. The locking pin 36 is then held by a second spring 37. and are biased in a direction to separate them from each other.

[0018] A recess 20d is provided at a position facing the center line of the inner circumference of the large diameter portion 20c of the catch seat 20. is formed so that the engaging portion 36a of the locking pin 36 can engage. Also The tip end 31a of the drive pin 31 is formed into a tapered shape as shown in FIG. A locking hole 40 is provided on the circumference at a position specific to the drive pin 31, and a locking hole 40 is provided at a position specific to the driving pin 31. The protrusion 36b is engageable. Also, a protrusion formed on the outer periphery of the locking shaft 24 The locking shaft 24 is engaged with the groove 20e formed on the circumference of the catch seat 20. The rotation angle 2 of is regulated.

[0019] The plate key 41 inserted into the keyway 27 is configured as shown in FIGS. 5 and 6. Ru. That is, one end of the plate key 41 is a pin drive part 42, and the other end is a grip handle. 43 is inclined in a direction protruding to the front at a predetermined angle with respect to the pin driving part 42. . A first positioning groove 44 and a second positioning groove 46 are provided on the lower surface of the pin driving section 42. They are formed at different depths. Further, the first positioning groove 44 is located at the center line. The second positioning groove 46 is formed at a predetermined angle with respect to the center line. formed at right angles. When the plate key 41 is inserted into the key groove 27, the first position The tapered tip 31a of the drive pin 31 fits into the positioning groove 44, and the tapered portion fits into the groove. The drive pin 31 rotates and moves in the axial direction so as to match the direction. this In this state, the protrusion of the locking pin 36 is inserted into the locking hole 40 formed on the outer periphery of the drive pin 31. The locking hole 40 is positioned so that the starting portion 36b engages with the locking hole 40. Furthermore, code 47 is a nameplate.

[0020] Next, to explain the operation of this embodiment, when the plate key 41 is pulled out from the snuff groove 27, When the key is locked, the tip of the drive pin 31 is pressed when the plate key 41 is pulled out. 31a is rotated by the second positioning groove 46 of the plate key 41, and the tapered part is The protrusion 36b of the locking pin 36 is in a square direction and comes into contact with the outer periphery of the drive pin 31. ing. As a result, the pair of left and right locking pins 36 are pushed outward, and the locking pins 36 An engaging portion 36a formed at one end engages with a recess 20d formed on the inner circumference of the catch seat 20. The rotation of the mating lock shaft 24 is stopped and locked.

[0021] When the pin drive part 42 of the plate key 41 is inserted into the key groove 27, the tape of the drive pin 31 is inserted. The pin-shaped tip 31a fits into the first positioning groove 44 and rotates by a predetermined angle, and at the same time It moves in the axial direction according to the depth of the groove 44. As a result, the locking pin 36 is The protrusions 36b are fitted into the locking holes 40 of the opposing drive pins 31, respectively, and the pair of protrusions 36b The locking pin 36 becomes accessible. As a result, the engagement formed at the tip of the locking pin 36 The portion 36a can be removed from the recessed portion 20d on the inner surface of the catch seat 20, and the lock is released. Ru. Therefore, if you grip the handle 43 of the plate key 41 and rotate the locking shaft 24, the latch will lock. The locking of the door 1 by the plate 8 is released, and the door 1 can be opened. At this time, the locking pin The protruding portion 36b of 36 engages with a recessed hole 38 formed in a position other than the horizontal direction of the catch seat 20. However, the latch plate 8 can be held in a position where the door 1 can be opened and closed. Open to the right again For doors 1 that open to the left, rotate the handle 43 clockwise or counterclockwise. There is no need for a lock handle specifically for opening on the right or left.

[0022] When closing and locking the door, grasp the handle 43 of the plate key 41 and turn the locking shaft 24. After locking the latch plate 8 in the opening and closing the door 1, insert the plate key 41 into the key slot 27. extract it from At this time, the tip end 31b of the drive pin 31 is the pin drive part of the plate key 41. When passing through the second positioning groove 46 formed in the Since all the parts are horizontal, the tip part 36b of the locking pin 36 is connected to the drive pin 31. It separates from the locking hole 40 and comes into contact with the outer periphery of the drive pin 31, and returns to its original state and is rotated. will be checked.

[0023] According to this embodiment, unlocking by the driving pin 31 is performed by moving the driving pin 31 to the first position of the plate key 41. The drive pin 31 is rotated by the positioning groove 44 of No. 1 and moved in the axial direction. The locking pin 36 can be moved by positioning the locking hole 40 formed in the predetermined position. Since the lock cannot be unlocked unless it is enabled, unauthorized unlocking can be completely prevented. Ma Since the grip handle 43 of the plate-shaped key 41 is inclined diagonally forward, it is pulled forward when turning. This prevents damage to the pin drive section 42 and key groove 27. Ru.

[0024] Furthermore, when inserting the plate key 41 into the key groove 27, since the grip handle 43 is slanted, Positioning to the key groove 27 becomes easy, and when pulling out the plate key 41 from the key groove 27. This also prevents damage to the paint on the bottom door surface.

[0025] In particular, according to this embodiment, the drive pin 31 and the first spring 33 each have one Since only two locking pins 36 and two second springs 37 are required, The number of parts can be reduced, and the structure can be made simple and compact.

[0026]

[Effect of the idea]

As explained above, according to the present invention, unauthorized unlocking can be completely prevented, and The plate key can be easily inserted and removed from the keyway without damaging the surrounding area. Wear. Furthermore, the number of parts of the handle can be reduced, making the structure simple and compact.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view showing the configuration of an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA in FIG. 1.

[Figure 3] Front view of Figure 1

FIG. 4 is a side view showing the configuration of the drive pin in FIG. 1;

FIG. 5 is a longitudinal sectional view showing the configuration of a plate-shaped key according to an embodiment of the present invention.

FIG. 6 is a front view of FIG. 5.

FIG. 7 is a side view showing the configuration of a conventional door lock handle.

FIG. 8 is a cross-sectional view of FIG. 7.

FIG. 9 is a perspective view showing the configuration of a conventional plate key.

[Explanation of symbols]

1... Door 20... Seat 20d... Recessed part 23... Shaft hole 24... Locking shaft 27... Keyway 31... Drive pin 36... Locking pin 36a... Engaging part 36b... Projection 37... ... Spring 40 ... Locking hole 41 ... Plate key 44 ... First positioning groove 46 ... Second positioning groove

Claims (1)

[Scope of utility model registration request] Claim 1: A seat fixed to a door and having a shaft hole formed in the center in a direction perpendicular to the door; a plate-shaped key rotatably fitted into the shaft hole, and a plate-shaped key arranged in the lower part of the front surface in the axial direction; A locking shaft with a keyway formed therein, which is inserted into the locking shaft in a direction perpendicular to the locking shaft, and one end formed in a tapered shape that is inserted into the locking shaft so as to be slidable in the axial direction at the center of the locking shaft, protrudes into the keyway. a driving pin, which is biased so as to rotate, and has a pair of locking holes formed at predetermined positions on its outer periphery in a direction perpendicular to the axial direction; It is mounted so as to be movable in the direction of the seat, has an engaging portion on one outer end capable of engaging with one of a plurality of recesses formed on the inner periphery of the seat, and has an engaging portion on one inner end that can engage with one of a plurality of recesses formed on the inner periphery of the seat. A pair of left and right locking pins each having a protrusion that can be locked in a locking hole formed in the pin, and a spring that biases these locking pins in a direction to separate them, the plate-shaped key having: a first positioning groove into which one tapered end of the drive pin is fitted to rotate the drive pin and position the locking pin in a position where the locking pin is fitted into the locking hole of the drive pin; A lock handle for a door, characterized in that a second positioning groove is formed for positioning the pin in a position where the pin does not fit into the locking hole of the drive pin.