TWI448611B - Magnet lock - Google Patents

Description

Magnetic lock Field of invention

The present invention relates to a magnetic lock which is formed of a non-magnetic material and has a rotor capable of fitting a magnetic key into a detachable fitting recess and a wall portion serving as a clogging end of the fitting recess. Supported by a support protrusion provided in the fixed casing and rotatable, and the wall portion is opposed to the front end of the support protrusion, and the rod-shaped first permanent magnet system that can be engaged with the wall portion The side of the support protrusion protruding from the front end and being engaged with the wall portion is provided with spring potential energy, and is respectively fitted to a plurality of sliding recesses provided at the front end of the support protrusion and opening toward the wall portion side. a specific sliding concave portion is slidable, and a plurality of rod-shaped second permanent magnets are housed and fixed to the magnetic key, and when the magnetic key is fitted into the fitting recess, the wall portion is interposed therebetween 1 permanent magnet.

Background of the invention

Known in Patent Document 1, the following magnetic lock, that is, the engagement of the magnetic key and the fitting recess of the rotor allows the operation of the shutter of the keyhole of the switchable cylinder lock, and the rotor is The support protrusions provided on the housing of the cylinder lock are rotatably supported.

Advanced technical literature Patent literature

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2003-161061

However, in the magnetic lock disclosed in the above-mentioned Patent Document 1, the magnetization is a magnetical direction in which the rod-shaped plural permanent magnet having a circular cross section in the direction of the rotor axis is attached to the plurality of sliding portions of the support protrusion provided in the casing. The specific sliding concave portion selected in the concave portion is formed so as to be slidably engageable with the rotor, and is disposed on the rotor side of the plurality of second permanent magnets on the magnetic key side individually corresponding to the plurality of first permanent magnets. When the magnetic pole is the same as the magnetic pole on the magnetic key side of the corresponding first permanent magnet, the magnetic lock can be unlocked. In such a magnetic lock, only one type of magnetic key can be changed for one sliding recess, that is, the case where the N pole of the first permanent magnet is disposed on the magnetic key side, and the S pole of the first permanent magnet. When it is placed on the magnetic key side, when the type of the magnetic key is to be increased, the number of the sliding recesses and the number of the first permanent magnets fitted to the sliding recesses must be increased, which leads to an increase in size and cost.

The present invention has been made in view of the foregoing circumstances, and an object thereof is to provide a magnetic lock which can avoid an increase in size and cost and increase the kind of a magnetic key.

In order to achieve the above object, the present invention is a magnetic lock which is formed of a non-magnetic material and has a fitting recess capable of fitting a fitting magnetic key into a detachable fitting and a wall which is an occluding end of the fitting recess The rotor of the portion is supported by the support protrusion provided in the fixed casing and is rotatable, and the wall portion is opposed to the front end of the support protrusion, and is further engageable with the rod portion of the wall portion a permanent magnet is provided with spring potential energy toward a side that protrudes from the front end of the support protrusion and is engaged with the wall portion, and is fitted to a plurality of sliding openings that are provided at the front end of the support protrusion and open toward the side of the wall portion. a specific sliding concave portion selected in the concave portion is slidable, and a plurality of rod-shaped second permanent magnets are housed and fixed to the magnetic key, and when the magnetic key is fitted into the fitting concave portion, the wall portion is interposed The first and second permanent magnets formed in a square shape having a cross-sectional shape are magnetized so that the magnetic direction is orthogonal to the rotation axis of the rotor. flat To.

Further, in addition to the structure of the first feature, the second feature of the present invention is that the support protrusion is provided in the casing, and the casing is fixedly disposed to cover a front end portion of the cylindrical body provided in the cylinder lock. Further, a shutter that interlocks with the rotation of the rotor to open and close the keyhole of the cylinder lock is housed in the casing.

According to the first aspect of the present invention, the first and second permanent magnets having a square cross-sectional shape are magnetized so that the magnetic direction is directed in a direction perpendicular to a plane perpendicular to the rotational axis of the rotor. By changing the assembly direction of the first permanent magnet to the sliding recess provided in the support protrusion every 90 degrees, the type of the four types of magnetic keys can be changed for one sliding recess, compared to the conventional knowledge that only two types can be changed. The type of the magnetic key can be increased without increasing the number of the sliding recesses and the first permanent magnet, and it is possible to avoid an increase in size and cost and increase the type of the magnetic key.

Moreover, according to the second feature of the present invention, it is possible to increase the type of the magnetic key used in the protection device for closing the keyhole of the cylinder lock by the shutter.

Simple illustration

Fig. 1 is a longitudinal sectional side view of the protection device for the cylinder lock in a state in which the shutter is in the locked position and in front of the magnetic key, and is a cross-sectional view taken along line 1-1 of Fig. 3. (First embodiment)

Figure 2 is a longitudinal cross-sectional side view of the protection device for the cylinder lock in the locked position and in the state in which the magnetic key has been fitted. (First embodiment)

Figure 3 is a cross-sectional view of the arrow direction at line 3-3 of Figure 1. (First embodiment)

Figure 4 is a cross-sectional view taken along line 4-4 of Figure 1. (First embodiment)

Fig. 5 is a sectional view taken on line 5-5 of Fig. 1. (First embodiment)

Fig. 6 is a cross-sectional view corresponding to Fig. 4 in a state where the shutter is rotated to an open position. (First embodiment)

Figure 7 is a perspective view of the first permanent magnet. (First embodiment)

Figure 8 is a partial cutaway side view showing the magnetic key attached to the mechanical key. (First embodiment)

Figure 9 is a cross-sectional view taken along line 9-9 of Figure 3. (First embodiment)

Form for implementing the invention

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

First, in the first and second figures, a vehicle, for example, a cylindrical body 16 of a cylinder lock 15 for a locomotive is provided in a head pipe (not shown) of a vehicle body frame, and the front end portion of the cylindrical body 16 is It is covered by a housing 18 that is fixed to the side of the body frame. The casing 18 is composed of a shell member 19 made of a non-magnetic material attached to the front end portion of the cylindrical body 16, and a cover member 20 made of a non-magnetic material attached to the shell member 19.

Referring to Fig. 3, an insertion hole 21 is provided in the casing 18, and the insertion hole 21 corresponds to a key hole 17 disposed at a central portion of the front end of the cylinder lock 15. The insertion hole 21 is formed by the through hole 22 and the through hole 23 which are respectively coaxially provided to the case member 19 and the cover member 20, and the through hole 23 is easily inserted in order to insert the mechanical key 45 (refer to Fig. 8). The outer end portion is formed in a tapered shape.

Further, referring to Figs. 4 to 6, the shutter 24 is housed in the casing 18, and the shutter 24 can lock the locking position of the key hole 17 and the insertion hole 21 (Figs. 4 and 5). And sliding operation between opening the keyhole 17 and the opening position of the insertion hole 21 (the position of FIG. 6).

As shown in FIG. 2, the magnetic key 28 is fitted to the fitting recess 27 provided in the magnetic lock 25 of the casing 18, and the sliding operation of the shutter 24 is allowed, and the magnetic lock 25 is also provided. A rotor 26 that can be rotatably supported by the casing 18 is provided, and the fitting recess 27 is provided in the rotor 26.

A support protrusion 29 projecting toward the cover member 20 side and having a circular cross section is integrally protruded from the case member 19 of the housing 18, and a circular portion is provided on the cover member 20 at a portion corresponding to the support protrusion 29. Opening 30.

The rotor 26 has a wall portion 31 constituting a closed end portion of the fitting recess 27 in the axially intermediate portion, and is formed in a substantially cylindrical shape by a non-magnetic material, and is rotatably supported by the support protrusion 29. And the wall portion 31 is opposed to the front end of the support protrusion 29, and the O-ring 32 is interposed between the base portion of the support protrusion 29 and the rotor 26, and the outer end of the rotor 26 is disposed to face the foregoing Opening 30.

The shutter 24 is slidably movable between the locked position shown in FIGS. 4 and 5 and the open position shown in FIG. 6, and is sandwiched between the case member 19 and the cover member 20 of the housing 18, in order to avoid friction. The resistance is increased by the sliding of the entire shutter member 24 with the shell member 19, and a plurality of, for example, three protrusions 34A, protrusions 34B, and protrusions 34C are protruded from the shell member 19 to be slidably coupled to the shutter 24.

However, the fitting recess 27 of the rotor 26 is formed to have a cross-sectional shape such as an irregular octagonal shape, and a projection 35 is protruded from a substantially central portion of the fitting recess 27. Further, only the magnetic key 28 can be fitted to the fitting recess 27, and the magnetic key 28 has a cross-sectional shape corresponding to the cross-sectional shape of the fitting recess 27, and has a recess 36 into which the projection 35 can be fitted.

The lower portion of the rotor 26 is slit to form a discharge groove 70 for discharging water entering the fitting recess 27, and a discharge passage 71 leading to the discharge groove 70 is formed between the case member 19 and the lower portion of the cover member 20, and At the lower portion of the casing 18, the lower end of the discharge passage 71 is opened to the outside.

At a front end of the support protrusion 29, a plurality of, for example, four corners of the square, for example, four sliding recesses 37 are provided to be opened toward the rotor 26 side, and the sliding selected in each of the sliding recesses 37... In the recessed portion 37, the rod-shaped first permanent magnets 38 are fitted so as to be slidable, and springs 39 are interposed between the bottom of each of the sliding recesses 37 and the first permanent magnets 38, respectively. The springs 39 are spring-loaded toward the front end side of the support projections 29 from the first permanent magnets 38.

In Fig. 7, the first permanent magnet 38 is formed in a bar shape in which the cross-sectional shape is square, and is magnetized so that the magnetic direction is along a plane orthogonal to the rotation axis of the rotor 26. That is, the first permanent magnet 38 is magnetized such that half of the cross-sectional shape is made N pole, and the remaining half is made S pole.

Further, the sliding concave portion 37 is also formed such that the first permanent magnet 38 can be fitted to be slidable, and the cross-sectional shape is formed into a square shape. For example, a pair of parallel two sides are along the radial direction of the rotor 26. On the rotor 26, sliding recesses 37 are provided. Further, the first permanent magnets 38 are formed by appropriately arranging the magnetic poles arranged in a plane orthogonal to the rotational axis of the rotor 26, and are fitted in the sliding recesses 37 selected in the respective sliding recesses 37... Is slidable. In other words, the first permanent magnets 38 are slidably fitted in the selected sliding recesses 37 by one of the following four kinds of magnetic pole arrangements, that is, the N poles are located in the radial direction of the rotor 26 and the S poles. The N-pole is located on the outer side in the radial direction of the rotor 26; the N-pole is located on the outer side in the radial direction of the rotor 26, and the S-pole is located on the inner side in the radial direction of the rotor 26; and the N-pole is located on one side of the circumferential direction of the rotor 26 and S The pole is located on the other side in the circumferential direction of the rotor 26; and the N pole is located on the other side in the circumferential direction of the rotor 26 and the S pole is located on one side in the circumferential direction of the rotor 26.

On the other hand, in the wall portion 31 of the rotor 26, the engaging recessed portion 40 of the portion of the first permanent magnet 38 is engaged with the sliding recessed portion 37, and the cross-sectional shape is set to a square shape, and each of the first In a state in which one of the permanent magnets 38 is engaged with the engaging recesses 40, respectively, the rotation of the rotor 26 can be prevented.

In Fig. 8, the magnetic key 28 is attached to the handle portion 46 of the mechanical key 45 for the cylinder lock 15, and is formed to have an outer peripheral shape corresponding to the inner peripheral shape of the fitting recess 27 in the rotor 26. By.

In the magnetic key 28, a plurality of, for example, four housing recesses 41 are provided to open toward the wall portion 31 side of the rotor 26, and are accommodated in the housing recesses 41 selected from the housing recesses 41, respectively. 2 permanent magnets 42..., and the storage recesses 41 are disposed at positions corresponding to the arrangement of the first permanent magnets 38 disposed in the support protrusions 29. Further, the opening end of each of the housing recesses 41 is closed by a closing plate 43 made of a non-magnetic material fixed to the magnetic key 28. In other words, the second permanent magnet 42 is housed and fixed to the magnetic key 28, and when the magnetic key 28 is fitted into the fitting recess 27, the blocking plate 43 and the wall portion 31 are interposed therebetween. Permanent magnet 38...

Further, the second permanent magnets 42 are also formed into a square rod shape in the same manner as the first permanent magnets 38, and are magnetized so that the magnetic direction is along a plane orthogonal to the rotation axis of the rotor 26. . Moreover, the magnetic pole arrangement in the plane of each of the second permanent magnets 42 disposed in the magnetic key 28 is set to be the same as the arrangement of the magnetic poles on the plane of the first permanent magnets 38 on the side of the support protrusion 29, and is regular. When the magnetic key 28 is fitted into the fitting recess 27, as shown in Fig. 2, the first permanent magnet 38 on the side of the supporting portion 29 is released from the card by the spring force of the spring 39 by the repulsive force of the same magnetic pole. The recessed portion 40... is pushed into the sliding recessed portion 37... thereby allowing the rotation of the rotor 26 to be moved.

The shutter 24 housed in the casing 18 is connected to the keyhole 17 in conjunction with the rotation of the rotor 26. In this embodiment, the rotor 26 is connected to one end of the shutter 24 via the link mechanism 47. . Further, the link mechanism 47 is constituted by a connecting arm 48 which is formed to extend toward one end side of the shutter 24 and is integrally provided on the outer circumference of the rotor 26; the connecting shaft 49 has a function The axis of rotation of the rotor 26 is parallel to the axis, and is disposed at the front end of the connecting arm 48; and the connecting hole 50 is formed such that the connecting shaft 49 can be fitted to be rotatable and disposed at one end of the shutter 24.

According to the link mechanism 47, when the rotor 26 is rotated while the rotation of the rotor 26 is permitted, the shutter 24 follows the rotor 26 and slides.

Further, the shutter 24 is slidably movable between the state in which the lock hole 15 of the lock case 18 is in the closed position and protects the state of the cylinder lock 15 (the state of FIGS. 1 to 5), and FIG. The opening position of the insertion hole 21 of the open casing 18 is shown and the key is inserted into the key hole 17 of the cylinder lock 15, and in the above-mentioned blocking position, each of the first permanent magnets 38 of the supporting protrusion 29 is ... Engaged in each of the engagement recesses 40 of the rotor 26, and in the open position, the first permanent magnets 38 of the support protrusions 29 cannot be engaged with the respective engagement recesses 40 of the rotor 26, corresponding to The shutter 24 defines the range of rotation of the rotor 26 in the range of the sliding motion between the locked position and the open position.

A guiding mechanism 51 is disposed between the shell member 19 of the casing 18 and the shutter 24, and the guiding mechanism 51 guides the sliding movement of the shutter 24 between the locked position and the open position. Moreover, the guiding mechanism 51 The guide pin 52 is implanted in the case member 19; and the guide hole 53 is formed such that the guide pin 52 is fitted to be slidable and provided to the shutter 24. Further, the shutter 24 is guided by the guide pin 52 fitted to the guide hole 53 to be slidably operated.

In FIG. 9, a detent mechanism 56 is disposed between the casing member 19 of the casing 18 and the rotor 26, and the detent mechanism 56 defines a rotation limit of the rotor 26 corresponding to the locked position and the open position of the shutter 24. Further, the scorpion mechanism 56 includes a bottomed accommodating hole 58 that is opposed to the collar portion 57 that is provided at one end of the outer circumference of the rotor 26 on the side opposite to the coupling arm 48, and is provided to the shell member. 19; the ball 59 is fitted to the receiving hole 58 and slidable; and the spring 60 exerts a spring force that applies the potential of the spherical body 59 to the collar portion 51 side, and is accommodated in the receiving hole 58; The groove 61 is engaged with the spherical body 59 when the shutter 24 is at the locked position, and is disposed on the collar portion 57; and the engaging groove 62 is engaged with the spherical body 59 when the shutter 24 is in the open position, and is disposed In the collar portion 57.

An open position holding mechanism 64 is disposed between the casing member 19 of the casing 18 and the shutter 24, and the open position holding mechanism 64 elastically holds the shutter 24 in an open position, and the open position holding mechanism 64 is further The plate spring 66 is disposed at one end of the plate spring 66, and is provided with an arc-shaped engaging portion 66a at the other end, and the protrusion 65 is protruded from the shell of the casing 18. The member 19; and the locking portion 67 are engaged with the engaging portion 66a in a state of being in an open position, and are disposed on the outer peripheral portion of the other end side of the shutter 24; as shown in Fig. 6, when the brake is provided When the plate 24 is in the open position, the engaging portion 66a is elastically engaged with the locking portion 67 and holds the shutter 24 in the open position. Further, when the shutter 24 is held in the open position by the open position holding mechanism 64, and the manual operation force toward the lock position is applied to the shutter 24, the leaf spring 66 can be flexed to release the engaging portion 66a. Engagement with the elasticity of the locking portion 67, whereby the shutter 24 can be rotated to the blocking position side.

The collar portion 57 of the rotor 26 is provided with a pin-shaped operation button 68 that protrudes toward the opposite side of the case member 19, and the through hole 69 penetrating the operation button 68 is formed to be connected to, for example, the opening portion 30 and disposed in the housing 18. Cover member 20. Further, the through hole 69 is formed to allow the operation knob 68 to move in accordance with the sliding motion of the shutter 24 between the locked position and the open position.

Next, the action of the embodiment will be described, and the specific sliding recess 37, which is provided in a plurality of sliding recesses 37, which are provided at the front end of the fixed support portion 29 of the casing 18, can be engaged with the wall portion. The rod-shaped first permanent magnet 38 is biased toward the wall portion 31 by a spring, and is slidably fitted, and the wall portion 31 is supported by the support projection 29 as The rotatable rotor 26 is opposed to the front end of the support protrusion 29, and a plurality of rod-shaped second permanent magnets 42 are housed and fixed to the magnetic key 28, and the magnetic key 28 is fitted to the magnetic key 28 When the rotor 26 is fitted into the recessed portion 27, the wall portion 31 is interposed between the first permanent magnet 38 and the first and second permanent magnets 38, ..., 42 are formed in a cross-sectional shape to form a square. And magnetized to a direction in which the magnetic force faces in a plane orthogonal to the rotational axis of the rotor 26.

Therefore, the type of the four kinds of magnetic keys 28 can be changed for one sliding concave portion 37 by changing the assembly direction of the first permanent magnet 38 ... in the sliding concave portion 37 of the supporting projection 29 every 90 degrees. The number of the magnetic keys 28 can be increased without increasing the number of the sliding recesses 37 and the first permanent magnets 38, and the number of the sliding recesses 37 and the first permanent magnets 38 can be increased, and the increase in size and cost can be avoided and the magnetic key can be increased. 28 kinds.

Further, the support protrusion 29 is provided in the casing 18, and the casing 18 covers the front end portion of the cylindrical body 16 provided in the cylinder lock 15 and is fixed to the vehicle body frame, and is also coupled to the rotor 26 The shutter 24 that opens and closes the keyhole 17 of the cylinder lock 15 in a rotatable manner is housed in the casing 18, so that the protection device for closing the keyhole 17 of the cylinder lock 15 by the shutter 24 can be added. The type of magnetic key 28 in the middle.

The embodiments of the present invention have been described above. However, the present invention is not limited to the embodiments described above, and various modifications may be made without departing from the spirit thereof.

For example, in the above embodiment, the shutter 24 is coupled to the rotor 26 via the link mechanism 47. However, the rotor and the shutter may be integrally formed.

15. . . Cylinder lock

16. . . Cylinder body

17. . . Keyhole

18. . . case

19. . . Shell member

20. . . Cover member

twenty one. . . Insertion hole

22,23. . . Through hole

twenty four. . . gate

25. . . Magnetic lock

26. . . Rotor

27. . . Fitting recess

28. . . Magnetic key

29. . . Support protrusion

30. . . Opening

31. . . Wall

32. . . O ring

34A, 34B, 34C. . . Bulge

35,65. . . Projection

36. . . Concave

37. . . Sliding recess

38. . . First permanent magnet

39,60. . . spring

40. . . Engagement recess

41. . . Storage recess

42. . . Second permanent magnet

43. . . Occlusion plate

45. . . Mechanical key

46. . . Handle

47. . . Linkage

48. . . Link arm

49. . . Connecting shaft

50. . . Link hole

51. . . . Guiding mechanism

52. . . Guide pin

53. . . Guide hole

56. . . Scorpion agency

57. . . Shaft ring

58. . . Storage hole

59. . . Sphere

61,62. . . Kap

64. . . Open position retention mechanism

65. . . Projection

66. . . Plate spring

66a. . . Clamping department

67. . . Clamping part

68. . . Operation button

69. . . Through hole

70. . . Drainage

71. . . Discharge path

Fig. 1 is a longitudinal sectional side view of the protection device for the cylinder lock in a state in which the shutter is in the locked position and in front of the magnetic key, and is a cross-sectional view taken along line 1-1 of Fig. 3. (First embodiment)

Figure 2 is a longitudinal cross-sectional side view of the protection device for the cylinder lock in the locked position and in the state in which the magnetic key has been fitted. (First embodiment)

Figure 3 is a cross-sectional view of the arrow direction at line 3-3 of Figure 1. (First embodiment)

Figure 4 is a cross-sectional view taken along line 4-4 of Figure 1. (First embodiment)

Fig. 5 is a sectional view taken on line 5-5 of Fig. 1. (First embodiment)

Fig. 6 is a cross-sectional view corresponding to Fig. 4 in a state where the shutter is rotated to an open position. (First embodiment)

Figure 7 is a perspective view of the first permanent magnet. (First embodiment)

Figure 8 is a partial cutaway side view showing the magnetic key attached to the mechanical key. (First embodiment)

Figure 9 is a cross-sectional view taken along line 9-9 of Figure 3. (First embodiment)

38‧‧‧1st permanent magnet

Claims (2)

A magnetic lock is a rotor formed of a non-magnetic material and having a fitting recess capable of fitting a magnetic key into a detachable end portion and a wall portion serving as a closing end portion of the fitting recess portion, and being supported by the fixed portion The support protrusion of the housing is rotatable, and the wall portion is opposed to the front end of the support protrusion, and the rod-shaped first permanent magnet that can be engaged with the wall portion is facing from the support protrusion The side of the front end that is protruded and engaged with the wall portion is provided with spring potential energy, and is fitted to a specific sliding concave portion selected from a plurality of sliding concave portions provided at the front end of the supporting projection and open toward the wall portion side, and is slidable. Further, the plurality of rod-shaped second permanent magnets are housed and fixed to the magnetic key, and when the magnetic key is fitted into the fitting recess, the wall portion is interposed between the first permanent magnet and the first permanent magnet. The magnetic lock is characterized in that the first and second permanent magnets formed in a square shape in cross section are magnetized so that the magnetic direction faces a plane orthogonal to the rotation axis of the rotor. The magnetic lock according to claim 1, wherein the support protrusion is disposed on the housing, and the housing is fixedly disposed to cover a front end portion of the cylindrical body provided in the cylinder lock, and is coupled to the rotor The shutter that opens and closes the keyhole of the cylinder lock is housed in the casing.