JP2016104940A - Key unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a key unit capable of suppressing occurrence of abutting sound.SOLUTION: A key unit 1 includes: a mechanical key 10 having a key plate 11 for locking and unlocking, and a rotor member 13 fixed on one end of the key plate 11; a release button 27 fitted with the rotor member 13 so as to be integrally rotatable and movable in a rotation axis direction; a case 20 for supporting the rotor member 13 with the release button 27 as a rotation center between a storage position and a fully deployed position of the mechanical key 10; an elastic member 28 having one end fixed to the mechanical key 10 and the other end fixed to the case 20 and energizing the release button 27 to an integral rotation direction and the rotation axis direction; and a shock absorbing elastic member 29 provided on the fully deployed position side of the case 20 and applying force in a direction opposite from force of the elastic member 28 before the mechanical key 10 reaches the fully deployed position from the storage position.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a key unit capable of rotating and storing a mechanical key inside a case.

  As an example of a key unit capable of rotating and storing a mechanical key inside the case, for example, a key unit described in Patent Document 1 has been proposed.

  The key unit described in Patent Document 1 supports a mechanical key having a key head that is rotated by a torsion spring from a storage position in which the key plate is stored to a protruding position in which the key plate is protruded. doing. A release button that restricts the rotation of the mechanical key is supported on the gripping case via a coil spring that urges the case surface, and is detachably fitted to the key head.

  By pushing the release button against the spring force of the coil spring, the rotation restriction of the mechanical key is released, and the mechanical key is automatically rotated from the retracted position to the protruding position side by the spring force of the torsion spring. It is like that. The rotating end of the mechanical key biased by the torsion spring toward the protruding position side is regulated by contacting the gripping case.

JP 2007-255014 A

  The key unit described in Patent Document 1 is configured to directly receive the turning force of a mechanical key urged by a torsion spring toward the protruding position with a gripping case. For this reason, the mechanical key collides with the gripping case vigorously and a large contact sound is generated. Therefore, there is a desire to reduce the contact sound generated when the mechanical key contacts the gripping case.

  The objective of this invention is providing the key unit which suppressed generation | occurrence | production of the contact sound.

[1] The present invention includes a key plate for locking and unlocking, a mechanical key having a rotor member fixed to one end portion of the key plate, and fitted to the rotor member so as to be integrally rotatable and movable in the rotational axis direction. A release button to be combined, a case for supporting the rotor member around the release button between a retracted position and a fully deployed position of the mechanical key, and one end fixed to the mechanical key and the other end An elastic member that is fixed to the case and biases the release button in an integral rotation direction and a rotation axis direction, and is provided on the fully deployed position side of the case, and the mechanical key is fully deployed from the retracted position. A shock-absorbing elastic member that applies a force in the opposite direction to the force of the elastic member while reaching the position. In the key unit.

[2] The case according to [1] described above has an engagement / disengagement recess corresponding to the retracted position and the fully deployed position in an opening peripheral portion of the insertion hole into which the release button is inserted, and the release button And a restricting protrusion for restricting the rotation of the rotor member, and the engaging / disengaging recess has a slope for guiding the restricting protrusion by the elastic member so as to be disengageable.

[3] The release button described in [1] or [2] is formed in a cap shape, and the elastic member has a substantially cylindrical shape inserted into the release button. To do.

[4] The elastic member according to any one of [1] to [3] may be configured such that a force that urges the mechanical key in the rotation direction from the retracted position to the fully deployed position, and the release button as a rotation axis. It consists of a compression torsion spring to which a force for urging in the direction is applied.

[5] The shock-absorbing elastic member according to [1] is formed of a torsion spring.

  According to the present invention, it is possible to suppress the generation of contact noise with a simple structure.

It is a figure which shows the external appearance of the key unit which concerns on embodiment suitable for this invention. It is a fragmentary perspective view which shows the inside of the key unit which concerns on embodiment. It is an internal cross-sectional enlarged view of the III-III line arrow of FIG. (A) is a fragmentary perspective view when the release button of the key unit which concerns on embodiment is seen from the back surface side of an upper case, (b) is for demonstrating the state which a release button engages with an upper case FIG. It is a figure corresponding to the III-III arrow directional cross section of FIG. 1 for demonstrating operation | movement of the key unit which concerns on embodiment, Comprising: (a) is an internal cross-sectional enlarged view which shows the state before operation of a release button, (B) is an enlarged internal cross-sectional view showing a state when the release button is operated, and (c) is an enlarged internal cross-sectional view showing a state after the release button is operated. It is a figure for demonstrating operation | movement of the key unit which concerns on embodiment, Comprising: (a) is an internal top view which shows the storing state of a mechanical key, (b) is an internal top view which shows the expansion | deployment state of a mechanical key. (C) is an internal top view which shows the expansion | deployment state of the following mechanical key of (b), (d) is an internal top view which shows the complete expansion | deployment state of a mechanical key. It is a perspective view which shows the buffering elastic member of the key unit which concerns on embodiment. It is a figure for demonstrating the relationship between the rotation angle of the mechanical key of the key unit which concerns on embodiment, the torsional force of an elastic member, the torsional force of a buffer elastic member, and a buffering force.

  Preferred embodiments of the present invention will be specifically described below with reference to the accompanying drawings.

(Overall configuration of key unit)
In FIG. 1, reference numeral 1 indicating the whole indicates an external appearance of a key unit capable of rotating and storing a mechanical key 10 for locking or unlocking, for example, a cylinder lock disposed in a vehicle by a mechanical operation. Yes.

  The case 20 has an upper case 21 and a lower case 22, and is fixed by fixing means (not shown) in a state where the upper case 21 and the lower case 22 are fitted.

  Four switch buttons 23 to 26 are provided on the upper surface of the upper case 21 so as to be pressed. Case 20 and switch buttons 23-26 consist of resin materials, such as ABS and PC, for example.

  The key unit 1 according to the illustrated example can be applied to, for example, a portable device in which a control device for electrically locking and unlocking a locking device disposed in a vehicle is remotely operated by wireless communication. An operation protrusion for operating a tact switch mounted on a circuit board (not shown) is formed at the center of the rear surface of 26.

  Examples of the switch buttons 23 to 26 include a lock button / unlock button for locking / unlocking the door of the vehicle, and a luggage button for unlocking (opening) the luggage door.

  A circular insertion hole 21a is further formed through the upper surface of the upper case 21, and a release button 27 for allowing and restricting the rotation of the mechanical key 10 is disposed through the insertion hole 21a.

  As shown in FIGS. 2 and 3, the mechanical key 10 includes a long plate-like key plate 11 and a substantially square cylindrical rotor member 13 fixed to one end of the key plate 11 via a pin 12. Become. The material of the key plate 11 is made of a metal material such as white and white. The material of the rotor member 13 is made of a metal material such as zinc die casting.

  A circular through hole 13a fitted to the release button 27 is formed through the intermediate portion of the rotor member 13, and a pair of restricting holes 13b and 13b communicating with the through hole 13a are 180 ° in the circumferential direction. It penetrates with the phase difference of.

  A pair of restricting protrusions 27a and 27a project from the lower portion of the release button 27 with a phase difference of 180 ° in the circumferential direction. Each regulation protrusion 27a is fitted with a regulation hole 13b of the rotor member 13, and the mechanical key 10 is rotated and stored in a component storage space 20a that opens on the side wall of the case 20 with the release button 27 as a rotation center axis. Supported as possible.

  The release button 27 is formed in a long cap shape made of a metal material such as zinc die-cast, for example, and has a cylindrical shape that forms a support boss portion 22 a in which the inner bottom surface of the release button 27 is erected on the inner bottom surface of the lower case 22. Is supported by a compression torsion spring 28 which is an elastic member.

  The compression torsion spring 28 has a substantially cylindrical coil portion 28a inserted into the release button 27 and a pair of spring end portions 28b and 28b. Each spring end portion 28 b is fixed to the inside of the release button 27 and the support portion of the support boss portion 22 a of the lower case 22.

  A compression torsion spring 28 applies to the mechanical key 10 a torsion force that urges the mechanical key 10 in the rotational direction of the fully deployed position from the stored position stored in the component storage space 20a of the case 20 and the rotational axis direction. Compressive force is applied.

  As shown in FIG. 4A, the sliding surface of each restricting protrusion 27 a of the release button 27 against the spring force of the compression torsion spring 28 is formed around the lower opening of the insertion hole 21 a of the upper case 21. An annular slide step 21b to be slid is formed so as to protrude. A pair of engaging and disengaging recesses 21c and 21c for engaging and disengaging the restricting protrusions 27a of the release button 27 are formed in the sliding step 21b with a phase difference of 180 ° in the circumferential direction.

  A slope 21d inclined downward from the sliding step 21b is formed at the opening end of the upper case 21 in the rotation direction of the engaging / disengaging recess 21c. The inclined surface 21d functions as a cam surface for automatically fitting the restricting protrusion 27a of the release button 27 to the engaging / disengaging recess 21c by the spring force of the compression torsion spring 28.

  The engaging / disengaging recess 21c of the upper case 21 has a function of holding the posture of the mechanical key 10 by fitting and holding the restricting protrusions 27a of the release button 27 at the storage position and the fully deployed position of the mechanical key 10. ing.

  On the upper case side facing surface of the rotor member 13, as shown in FIGS. 2 and 4A, a rotation stopper 13 c that regulates the rotation range of the mechanical key 10 is positioned at a pair of regulating projections 27 a of the release button 27. And projecting on the same straight line.

  On the other hand, on the rotor member side facing surface of the upper case 21, a stopper recess 21 e that prevents the rotation stopper 13 c of the rotor member 13 from rotating at the fully deployed position of the mechanical key 10 is formed in a semicircular arc shape centering on the release button 27. Has been.

(Key unit operation)
When the mechanical key 10 of the key unit 1 configured as described above is rotated from the retracted position to the fully deployed position, FIG. 3, FIG. 4 (a), FIG. 4 (b), and FIG. As shown in FIG. 5C and FIGS. 6A to 6D, the restricting protrusion of the release button 27 is operated by pushing the release button 27 against the spring force of the compression torsion spring 28. The locked state of 27a and the engagement / disengagement recess 21c of the upper case 21 is released.

  The restricting protrusion 27a of the release button 27 is held in a state of being engaged with the restricting hole 13b of the rotor member 13 even when the release button 27 is pushed in, and the pushing operation of the release button 27 is released. However, the sliding surface of the restricting protrusion 27 a of the release button 27 elastically contacts the sliding step portion 21 b of the upper case 21 by the spring force of the compression torsion spring 28.

  Accordingly, while the sliding surface of the restricting projection 27a of the release button 27 slides on the sliding step portion 21b of the upper case 21 against the spring force of the compression torsion spring 28, the mechanical key 10 moves outward from the storage position. And automatically rotate to the fully deployed position.

  When the mechanical key 10 reaches the fully deployed position, the restricting protrusion 27a of the release button 27 is fitted into the engaging / disengaging recess 21c of the upper case 21 via the inclined surface 21d by the spring force of the compression torsion spring 28. Then, the release button 27 is returned to the original position where the release button 27 can be pushed, and the posture of the mechanical key 10 is maintained.

  The rotation of the mechanical key 10 to the fully deployed position by the torsion force of the compression torsion spring 28 is restricted by the rotation stopper 13 c of the rotor member 13 reaching one end surface of the stopper recess 21 e of the upper case 21.

  On the other hand, when storing the mechanical key 10 from the fully deployed position to the retracted position, the release button 27 is pushed against the spring force of the compression torsion spring 28 to manually rotate the mechanical key 10 from the fully deployed position to the retracted position. As a result, the locked state between the restricting protrusion 27a of the release button 27 and the engaging / disengaging recess 21c of the upper case 21 is released.

  The restricting protrusion 27a of the release button 27 is held in a state of being engaged with the restricting hole 13b of the rotor member 13 even when the release button 27 is pushed in, and the mechanical key 10 is manually moved toward the storage position. The sliding surface of the restricting projection 27 a of the release button 27 is elastically brought into contact with the sliding step 21 b of the upper case 21 by the spring force of the compression torsion spring 28.

  Accordingly, the mechanical key 10 is completely moved by sliding the sliding surface of the restricting projection 27a of the release button 27 on the sliding step 21b of the upper case 21 against the spring force of the compression torsion spring 28 by manual operation. The rotation is performed from the unfolded position to the retracted position.

  When the mechanical key 10 reaches the retracted position, the restricting protrusion 27a of the release button 27 is fitted into the engaging / disengaging recess 21c of the upper case 21 via the inclined surface 21d by the spring force of the compression torsion spring 28, and the position is restricted. Then, the release button 27 is returned to the original position where the release button 27 can be pushed, and the posture of the mechanical key 10 is maintained.

  According to the key unit 1 configured as described above, the single compression torsion spring 28 urges the mechanical key 10 in the direction of rotating from the retracted position of the case 20 to the fully deployed position, and the mechanical key 10. And holding means for holding the case 20 in the storage position and the fully deployed position.

  By adopting a single compression torsion spring 28, a simple internal configuration can be achieved, and the narrow internal space of the case 20 can be used effectively, reducing the number of components and the key unit. 1 can be miniaturized.

(Contact noise reduction structure)
As shown in FIGS. 2, 6 (a) to 6 (d) and FIG. 7, the rotor member 13 is rotated at the fully deployed position of the mechanical key 10 on the opening end surface forming the component storage space 20 a of the case 20. A stopper surface 20b is formed to prevent this.

  When the mechanical key 10 jumps out of the case 20 by the torsional force of the compression torsion spring 28 and the rotor member 13 collides with the stopper surface 20b of the case 20 vigorously, a large contact noise is generated due to the impact load. This contact sound gives the user a sense of discomfort and discomfort.

  Therefore, the key unit 1 configured as described above has a structure that reduces the contact sound generated when the mechanical key 10 and the case 20 contact each other.

  As shown in FIGS. 2 and 6A to 6D, the case 20 receives the side surface of the rotor member 13 of the mechanical key 10 while the mechanical key 10 reaches the fully deployed position from the retracted position. Possible buffer elastic members 29 are arranged. The side surface of the rotor member 13 is formed in an arcuate surface with the release button 27 as the rotation center corresponding to the region from the storage position of the mechanical key 10 to the interference start position where interference with the buffer elastic member 29 is started.

  The shock absorbing elastic member 29 is supported by a mounting boss 22b erected on the inner bottom surface of the lower case 22 and applies a torsional force in the opposite direction to the torsional force of the compression torsion spring 28 to thereby apply the mechanical key 10. The rotor member 13 is configured as a torsion spring that absorbs an impact load.

  The buffer elastic member 29 includes a coil portion 29a that generates a torsion force, and a pair of spring end portions 29b and 29b that extend in the diameter increasing direction from both ends of the coil portion 29a. Of the pair of spring end portions 29b, the tip end portion of the spring end portion 29b on the side that interferes with the side surface of the rotor member 13 of the mechanical key 10 is bent in the rotational axis direction of the rotor member 13 and is formed as a bent end portion 29c. have.

  The bent end portion 29c of the buffer elastic member 29 serves to prevent the mechanical key 10 from being caught on the rotor member 13. The rotor member 13 and the buffer elastic member 29 are not scratched or worn, and the rattle or wear does not cause backlash between the rotor member 13 and the buffer elastic member 29, thereby providing stable and smooth operability. It becomes possible to secure.

  As the buffer elastic member 29, a torsion spring having a tension smaller than the tension (spring force) of the compression torsion spring 28 is used. The buffer elastic member 29 is preferably a metal member made of, for example, a leaf spring or a coil spring, but may be a rubber member.

  Here, referring to FIG. 8, the relationship among the rotation angle of the mechanical key 10, the torsion force of the compression torsion spring 28, the torsion force of the buffer elastic member 29, and the buffer force is illustrated.

In FIG. 8, symbol T ₁ is the torsion force of the compression torsion spring 28, symbol T ₂ is the torsion force of the buffer elastic member 29, and symbol T ₃ is the buffer acting on the rotor member 13 of the mechanical key 10. It is power.

Reference sign θ ₁ is a rotation angle at which interference between the side surface of the rotor member 13 and the buffer elastic member 29 in order to absorb an impact load due to the rotor member 13 of the mechanical key 10, and reference sign θ ₂ is the mechanical key 10. Is the rotation angle of the fully deployed position. Although not particularly limited to the illustrated example, the rotation angle θ ₁ is set to about 160 °, for example. Rotation angle theta ₂ is set to, for example, about about 180 °.

When the rotor member 13 comes into contact with the buffer elastic member 29 at the rotation angle θ ₁ of the mechanical key 10 and interference with the torsion force of the compression torsion spring 28 starts, each spring end 29b of the buffer elastic member 29 is compressed torsional. The spring 28 is pressed against the torsional force in the compression direction.

The torsion force of the shock absorbing elastic member 29 acts as a buffer (damper) force T ₃ in the deployed position of the middle of the mechanical key 10 reaches the fully deployed position, the rotor member 13 of the mechanical key 10 in between the interference zone theta ₁ theta ₂ The impact force of will be absorbed. The damper action of the buffer elastic member 29 slowly decelerates the rotation of the rotor member 13 of the mechanical key 10, and the impact of the mechanical key 10 caused by the rotor member 13 colliding with the stopper surface 20b of the case 20 vigorously. Has eased.

(Effect of embodiment)
According to the key unit 1 configured as described above, the following effects can be obtained in addition to the above effects.

  A contact noise reduction structure can be obtained by a simple structure in which one buffer elastic member 29 is added in the case 20 so as to face the side surface of the rotor member 13 of the mechanical key 10 on the side of the fully deployed position.

  By gradually lowering the torsional force of the compression torsion spring 28 at the deployment position in the middle of reaching the fully deployed position of the mechanical key 10, the mechanical key 10 can be brought into the fully deployed state quietly, and it has a luxury feeling. (Luxury) can be obtained.

[Modification]
The typical configuration example of the key unit 1 in the present invention has been described with reference to the embodiment, the illustrated example, and the like, but the following modifications are also possible.

  Although the configuration in which the pair of restricting protrusions 27a are arranged with a phase difference of 180 ° in the circumferential direction of the release button 27 is illustrated, for example, the engagement / disengagement recess 21c of the upper case 21 corresponds to the storage position and the fully deployed position of the mechanical key 10 In this case, the number of the restricting protrusions 27a may be only one.

  Although the configuration example in which the compression torsion spring 28 is inserted into the release button 27 is illustrated, for example, the compression torsion spring 28 is interposed in the through hole 13 a of the rotor member 13 between the release button 27 and the lower case 22. A configuration can be used.

  Although the example of a structure provided with the rotation means and the holding means of the mechanical key 10 by the single compression torsion spring 28 was illustrated, for example, the general coil spring arrange | positioned inside the release button 27, and a coil part are release buttons. 27, two elastic members including a torsion spring having one spring end fixed to the rotor member 13 and the other spring end fixed to the upper case 21 may be used. it can.

  Needless to say, the key unit 1 can be applied to a door used in a house or the like.

  As is clear from the above description, typical embodiments, modifications, and illustrated examples of the present invention have been illustrated. However, the above-described embodiments, modifications, and illustrated examples limit the invention according to the claims. Not what you want. Therefore, it should be noted that not all the combinations of features described in the above-described embodiments, modifications, and illustrated examples are essential to the means for solving the problems of the invention.

DESCRIPTION OF SYMBOLS 1 ... Key unit, 10 ... Mechanical key, 11 ... Key plate, 12 ... Pin, 13 ... Rotor member, 13a ... Through-hole, 13b ... Restriction hole, 13c ... Rotation stopper, 20 ... Case, 20a ... Component storage space, 20b ... stopper surface, 21 ... upper case, 21a ... insertion hole, 21b ... sliding step, 21c ... engagement / removal recess, 21d ... slope, 21e ... stopper recess, 22 ... lower case, 22a ... support boss, 22b ... attachment Boss, 23-26 ... Switch button, 27 ... Release button, 27a ... Restriction protrusion, 28 ... Compression torsion spring, 28a, 29a ... Coil, 28b, 29b ... Spring end, 29 ... Buffer elastic member, 29c ... Bending edge

Claims (5)

A mechanical key having a key plate for locking and unlocking, and a rotor member fixed to one end of the key plate;
A release button fitted to the rotor member so as to be integrally rotatable and movable in the rotational axis direction;
A case for supporting the rotor member with the release button as a rotation center between a storage position and a fully deployed position of the mechanical key;
One end portion is fixed to the mechanical key, the other end portion is fixed to the case, and an elastic member that biases the release button in an integral rotation direction and a rotation axis direction,
A shock-absorbing elastic member that is provided on the side of the fully deployed position of the case and that exerts a force in a direction opposite to the force of the elastic member while the mechanical key reaches the fully deployed position from the retracted position;
A key unit characterized by comprising The case has an engagement / disengagement recess corresponding to the retracted position and the fully deployed position in the periphery of the opening of the insertion hole for inserting the release button,
The release button has a regulation protrusion that regulates rotation of the rotor member,
2. The key unit according to claim 1, wherein the engagement / disengagement recess has a slope that guides the restricting protrusion so as to be engaged / disengaged by the elastic member. The release button is formed in a cap shape,
The key unit according to claim 1, wherein the elastic member has a substantially cylindrical shape that is inserted into the release button.   The elastic member comprises a compression torsion spring to which a force for urging the mechanical key in the rotational direction from the retracted position to the fully deployed position and a force for urging the release button in the rotational axis direction are applied. The key unit according to any one of claims 1 to 3.   The key unit according to claim 1, wherein the buffer elastic member is a torsion spring.

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