Door locking mechanism

The door lock mechanism addresses the issue of positional deviations affecting locking state maintenance by employing a cam and pin system with a biasing portion, ensuring reliable locking and unlocking functionality.

JP7648555B2Active Publication Date: 2025-03-18NIFCO INC
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Patent Information

Application Number
JP2022019733
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2022-02-10
Publication Date
2025-03-18
Estimated Expiration
2042-02-10

AI Technical Summary

Technical Problem

Existing door lock mechanisms can fail to maintain the locking state due to positional deviations in the instrument panel relative to the vehicle body, leading to unintended unlocking.

Method used

A door lock mechanism that includes a pair of rods and a rotor, with a cam and pin system that ensures the knob is maintained in a pushed state when the door is closed and returns to its original state when the door opens, utilizing a biasing portion to enhance the return mechanism.

Benefits of technology

The mechanism effectively prevents the knob from causing the door not to close, ensuring proper locking and unlocking functionality even with positional deviations, and enhances the convenience and reliability of the door locking system.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

To provide a door locking mechanism capable of suppressing a situation in which a state of a knob prevents a door from closing.SOLUTION: A lock mechanism 10 comprises: a cam 17B that engages with a pin 12E of a knob 12; and a second rotating body 17 pivotally supported on a lid. The second rotating body 17 is configured such that, when the knob 12 is pushed in while the lid is closed, the pin 12E engages with the cam 17B, maintaining the state in which the knob 12 is pushed in. Furthermore, when the lid is opened, the cam 17B and the pin 12E become disengaged, and the knob 12 is returned to the state before being pushed in.SELECTED DRAWING: Figure 3
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Description

[Technical field]

[0001] The present invention relates to a door lock mechanism. [Background technology]

[0002] A glove box is attached to an instrument panel of a passenger vehicle at a position facing the passenger seat in the front-to-rear direction of the vehicle. The glove box is provided with a locking mechanism for keeping a lid of the glove box closed. The locking mechanism is provided with a knob for opening the lid. When an occupant of the passenger vehicle presses the knob, the restriction on the displacement of the lid by the locking mechanism is released, thereby opening the lid.

[0003] An example of the locking mechanism includes a case, a knob, a pair of rods, and a pair of stays. The pair of rods are located outside the case so as to sandwich the case in the left-right direction of the passenger vehicle. One stay is connected to each rod, and each stay is held inside the case. The knob has a rectangular shape extending along the left-right direction, and is attached to the case so as to be able to be pushed into the case. The knob has claw portions extending from each of the four corners of the knob toward the inside of the case. Each claw portion has a recess exposed in a space defined by the case. Each stay has a protruding piece configured to be able to fit into the recess of the knob inside the case when the knob is pushed in.

[0004] When the lid of the glove box is closed, the tip of each rod is inserted into a hole in the instrument panel, so the displacement of the lid is restricted by the locking mechanism. On the other hand, when the knob is pressed with the lid closed, the knob is pushed into the case. This causes each stay to move in a direction toward the other stay, so that the tip of each rod exits the hole in the instrument panel. As a result, the restriction by the locking mechanism is released.

[0005] At this time, the claw of the knob moves toward the protruding piece of the stay, which fits into the recess of the claw. Therefore, once the knob is pressed, the tip of the rod is fixed in a position removed from the instrument panel, so that even if the external force applied to the knob is released, the restriction by the locking mechanism is maintained in a released state (for example, see Patent Document 1). [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2015-113594 A Summary of the Invention [Problem to be solved by the invention]

[0007] When the lid is closed, the occupant pushes the lid back so that the lid closes the opening of the instrument panel. At this time, the tip of each rod interferes with a part of the instrument panel near the hole in the instrument panel, causing each stay to move in a direction toward the other stay. As a result, the protruding piece of each stay comes out of the recess of the claw part, and each rod enters the hole in the instrument panel.

[0008] In this way, in order for the projection to be released from the claw, it is necessary for the tip of the rod to interfere with a part of the instrument panel when the lid is closed. Therefore, depending on the positional deviation of the instrument panel relative to the vehicle body, the positional deviation of the rod relative to the lid, and the installation of the lid relative to the instrument panel, the tip of the rod may not interfere, and the restriction by the locking mechanism may be maintained in a released state.

[0009] These problems are not limited to locking mechanisms applied to glove box lids, but are also common to locking mechanisms applied to other doors. [Means for solving the problem]

[0010] A door lock mechanism for solving the above problem is a door lock mechanism that limits the displacement of the door relative to a support member surrounding the door. The support member has a pair of locking portions that are recesses or through holes aligned along a first direction. The door lock mechanism includes a knob having an engagement portion for opening the door, and a pair of rods aligned along the first direction, the pair of rods being configured such that a tip of each rod is positioned within the locking portion where a tip of the other rod is not positioned, thereby maintaining the door in a closed state, and that when the knob is pushed in, the tip of each rod retreats to outside the locking portion, thereby allowing the door to open, and a rotating body having an engaged portion that engages with the engaging portion of the knob and journaled on the door, the engaging portion engages with the engaged portion when the knob is pushed in when the door is closed, thereby maintaining the knob in a pushed state, and when the door is opened, the engagement between the engaged portion and the engaging portion is released, thereby restoring the knob to a state before being pushed in.

[0011] According to the door lock mechanism, when the door is opened, the knob returns to the state before it was pushed in, so the knob does not remain in the pushed state even after the door is opened, especially when the door is closed. Therefore, when the door is closed, the state of the knob is prevented from causing the door to not close.

[0012] In the door lock mechanism, the engaged portion may be a cam, and the engaging portion may be a pin that moves along the shape of the cam. With this door lock mechanism, the pin moves along the shape of the cam, and the rotational motion of the cam is converted into the motion of the pin, so that the state of the pin can be changed between an engaged state with the cam and a disengaged state.

[0013] In the above door lock mechanism, the cam may have a cylindrical cam surface, the pin moves along the cam surface, the cam surface includes an operating surface, a retaining surface, and a return surface, the operating surface intersecting the retaining surface and the return surface, the cam is configured such that when the knob is pushed in, the pin moves along the operating surface so that the pin is positioned on the retaining surface, thereby maintaining the knob in a pushed-in state, and when the door is opened, the pin moves from the retaining surface to the return surface, thereby returning the knob to the state it was in before it was pushed in.

[0014] According to the above door lock mechanism, the knob pin moves from the cam's operating surface to the retaining surface, and then moves from the retaining surface to the return surface, so that the knob can maintain its pressed-in state and then return to the state it was in before it was pressed in.

[0015] The door lock mechanism may further include a biasing portion that biases the rotating body toward the support member. This door lock mechanism can increase the likelihood that the rotating body will return to the state before the door was opened, compared to a lock mechanism not including a biasing portion.

[0016] The door lock mechanism may further include a case supporting the pair of rods and the rotating body, the case being configured to support each rod in a state in which it can move along the first direction, and to support the rotating body in a rotatable state.

[0017] According to the above door lock mechanism, the pair of rods and the rotating body are supported by a single case. Therefore, by attaching the case supporting the pair of rods and the rotating body to the door to which the mechanism is applied, it is possible to attach both the pair of rods and the rotating body to the door. Effect of the Invention

[0018] According to the present invention, it is possible to prevent the state of the knob from causing a state in which the door cannot be closed. [Brief description of the drawings]

[0019] [Figure 1] FIG. 1 is a plan view showing a structure of a door lock mechanism according to an embodiment of the present invention. [Diagram 2] 2 is a cross-sectional view showing a structure taken along line II-II in FIG. [Diagram 3] FIG. 2 is an exploded perspective view showing the structure of the door lock mechanism shown in FIG. [Figure 4] FIG. 2 is a plan view showing the planar structure of the door lock mechanism shown in FIG. [Diagram 5] 5 is a cross-sectional view showing the structure taken along line VV shown in FIG. 4. [Figure 6] 6 is a cross-sectional view showing a structure taken along line VI-VI shown in FIG. 4. [Figure 7] FIG. 2 is a plan view showing the planar structure of the door lock mechanism shown in FIG. [Figure 8] 2 is a plan view showing the structure of an end face of a second rotating body included in the door lock mechanism shown in FIG. 1. [Figure 9] 5A to 5C are diagrams illustrating the operation of the door lock mechanism. [Figure 10] 5A to 5C are diagrams illustrating the operation of the door lock mechanism. [Figure 11] 5A to 5C are diagrams illustrating the operation of the door lock mechanism. [Figure 12] 5A to 5C are diagrams illustrating the operation of the door lock mechanism. [Figure 13] FIG. 11 is a perspective view showing a structure of a modified example of the door lock mechanism. [Figure 14] 14 is an operational diagram for explaining the operation of the modified example shown in FIG. 13. [Figure 15] 14 is an operational diagram for explaining the operation of the modified example shown in FIG. 13. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] An embodiment of a door lock mechanism will be described with reference to Figures 1 to 12. In the following, as an example of the door lock mechanism, a door lock mechanism applied to a glove box provided in an instrument panel of a passenger vehicle will be described. In the glove box, a lid that closes an opening of the instrument panel is an example of a door, and a frame positioned around the lid is an example of a support member. The frame is included in the instrument panel.

[0021] [structure] The structure of the door lock mechanism will be described with reference to Figures 1 to 3. Figure 1 shows a plan view of the door lock mechanism as viewed from a viewpoint facing the rear surface of the lid when the lid is closed. Note that the position of the lid when the lid is closed is the closed position, and the position of the lid when the lid is fully open is the open position.

[0022] As shown in FIG. 1, a door lock mechanism (hereinafter, lock mechanism) 10 is attached to a back surface LR of a lid L. The lid L is surrounded by a frame F. The frame F has a pair of locking grooves aligned along a first direction D1. The pair of locking grooves is composed of a first locking groove FG1 and a second locking groove FG2. Each of the locking grooves FG1, FG2 opens toward the lid L. The lock mechanism 10 limits the displacement of the lid L relative to the frame F that surrounds the lid L.

[0023] The lock mechanism 10 includes a pair of rods. The pair of rods includes a first rod 15 and a second rod 16. The first rod 15 and the second rod 16 are aligned along a first direction D1. Each of the rods 15, 16 has a shape that extends along the first direction D1. In each of the rods 15, 16, the end that is closer to the other rod 15, 16 is a base end 15A, 16A, and the end that is farther from the other rod 15, 16 is a tip end 15B, 16B.

[0024] The lock mechanism 10 includes a holding portion 21 that holds the second rod 16. The holding portion 21 holds a portion of the second rod 16 that is closer to the base end 16A than the tip 16B. A third spring 22 is attached to the holding portion 21. The third spring 22 is a torsion coil spring. One end of the third spring 22 is attached to the holding portion 21, and the other end is attached to the second rod 16 near the tip 16B. The third spring 22 biases the second rod 16 in a direction from the first rod 15 toward the second rod 16.

[0025] The pair of rods 15, 16 maintain the lid L in a closed state by positioning the tip 15B, 16B of each rod 15, 16 in the locking groove FG1, FG2 where the tip 15B, 16B of the other rod 15, 16 is not positioned. That is, the tip 15B of the first rod 15 is positioned in the first locking groove FG1, and the tip 16B of the second rod 16 is positioned in the second locking groove FG2, thereby maintaining the lid L in a closed state.

[0026] When the knob 12 (see FIG. 3) for opening the lid L is pushed in, the tips 15B, 16B of the rods 15, 16 are retracted from the locking grooves FG1, FG2, thereby enabling the lid L to be opened. That is, when the knob 12 is pushed in, the tip 15B of the first rod 15 moves along the first direction D1 and toward the second rod 16. As a result, the tip 15B of the first rod 15 moves from within the first locking groove FG1 to outside the first locking groove FG1. Also, when the knob 12 is pushed in, the tip 16B of the second rod 16 moves along the first direction D1 and toward the first rod 15. As a result, the tip 16B of the second rod 16 moves from within the second locking groove FG2 to outside the second locking groove FG2. Since the first rod 15 and the second rod 16 are disengaged from the frame F, the lid L can be displaced relative to the frame F. In other words, the lid L opens.

[0027] Among the positions of the rods 15, 16, the position of each rod 15, 16 when the lid L is closed and the tip 15B, 16B of each rod 15, 16 is located in the locking groove FG1, FG2 is the locked position. On the other hand, the position of each rod 15, 16 when the tip 15B, 16B of each rod 15, 16 is retracted from the locking groove FG1, FG2, thereby allowing the lid L to be opened is the unlocked position.

[0028] Fig. 2 shows a cross-sectional structure of the lock mechanism 10 taken along line II-II in Fig. 1. Line II-II passes through the base end 15A of the first rod 15 and the base end 16A of the second rod 16. 2, the lock mechanism 10 includes a case 11. A knob 12 is attached to the case 11. The knob 12 includes a pair of locking claws 12G. Each of the locking claws 12G contacts the case 11.

[0029] The base end 15A of the first rod 15 has a recess 15AR that opens toward the back surface LR of the lid L. The base end 16A of the second rod 16 has a recess 16AR that opens toward the back surface LR of the lid L, similar to the first rod 15. The first protrusion 14C1 of the first rotating body 14 (see FIG. 3) is fitted into the recess 15AR of the first rod 15. The second protrusion 14C2 of the first rotating body 14 is fitted into the recess 16AR of the second rod 16. As a result, the first rod 15 and the second rod 16 move along the first direction D1 in accordance with the rotation of the first rotating body 14. In addition, the biasing force of the third spring 22 acts on the first rod 15 via the first rotating body 14.

[0030] FIG. 3 shows the locking mechanism 10 in an exploded state. As shown in FIG. 3, the lock mechanism 10 includes a first spring 13, a first rotating body 14, a second rotating body 17, and a second spring 18, in addition to the pair of rods 15, 16, the case 11, and the knob 12 described above.

[0031] The case 11 supports the pair of rods 15, 16 and the second rotating body 17. The case 11 is configured to support each of the rods 15, 16 in a state in which the rods 15, 16 can move along the first direction D1, and to pivotally support the second rotating body 17 in a state in which the second rotating body 17 can rotate. The pair of rods 15, 16 and the second rotating body 17 are supported by one case 11. Therefore, by attaching the case 11 supporting the pair of rods 15, 16 and the second rotating body 17 to the lid L to which the present invention is applied, it is possible to attach both the pair of rods 15, 16 and the second rotating body 17 to the lid L. In addition to the pair of rods 15, 16 and the second rotating body 17, the case 11 supports the knob 12 and the first rotating body 14.

[0032] The case 11 includes a case body 11A. The case body 11A has a substantially rectangular shape when viewed from a perspective facing the back surface LR of the lid L. The case body 11A has a first opening 11H1 that opens toward the back surface LR of the lid L. The case 11 has a pair of second openings 11H2 that penetrate the case 11 in a direction perpendicular to the first direction D1. The case 11 includes a first flange portion 11F1 and a second flange portion 11F2 that protrude outward from the first opening 11H1. The first flange portion 11F1 and the second flange portion 11F2 are aligned along a direction perpendicular to the first direction D1.

[0033] A first cylindrical portion 11B1 and a second cylindrical portion 11B2 are located on the upper wall of the case body 11A. When viewed from a viewpoint facing the upper wall of the case body 11A, the first cylindrical portion 11B1 is connected to the first flange portion 11F1, while the second cylindrical portion 11B2 is connected to the second flange portion 11F2. The first cylindrical portion 11B1 and the second cylindrical portion 11B2 each extend along the first direction D1. The first cylindrical portion 11B1 defines a first insertion hole B1H, and the second cylindrical portion 11B2 defines a second insertion hole B2H.

[0034] The first rod 15 is inserted into the first through hole B1H. In the first rod 15, the portion other than the base end 15A including the tip 15B of the first rod 15 is smaller than the cross-sectional area of ​​the first through hole B1H perpendicular to the first direction D1. In contrast, the base end 15A of the first rod 15 is larger than the cross-sectional area of ​​the first through hole B1H perpendicular to the first direction D1. Therefore, when the first rod 15 is assembled to the case 11, the tip 15B of the first rod 15 is passed through the first through hole B1H. In addition, the movement of the first rod 15 along the first direction D1 is restricted by the base end 15A of the first rod 15 colliding with the first cylindrical portion 11B1.

[0035] The tip 15B of the first rod 15 has an inclined surface 15BS on the side opposite to the surface facing the lid L when the lid L is closed. Therefore, the tip 15B of the first rod 15 has a tapered shape. This allows the first rod 15 to interfere with the frame F when the lid L is closed, thereby making it possible for the first rod 15 to be pushed toward the case 11.

[0036] The second rod 16 is inserted into the second through hole B2H. In the second rod 16, the portion other than the base end 16A including the tip 16B of the second rod 16 is smaller than the cross-sectional area perpendicular to the first direction D1 in the second through hole B2H. In contrast, the base end 16A of the second rod 16 is larger than the cross-sectional area perpendicular to the first direction D1 in the second through hole B2H. Therefore, when the second rod 16 is assembled to the case 11, the tip 16B of the second rod 16 is passed through the second through hole B2H. In addition, the movement of the second rod 16 along the first direction D1 is restricted by the base end 16A of the second rod 16 colliding with the second cylindrical portion 11B2.

[0037] The tip 16B of the second rod 16 has an inclined surface 16BS on the side opposite to the surface facing the lid L when the lid L is closed. Therefore, the tip 16B of the second rod 16 has a tapered shape. This allows the second rod 16 to interfere with the frame F when the lid L is closed, thereby enabling the second rod 16 to be pushed toward the case 11.

[0038] The upper wall of the case body 11A has a first through hole 11AH1, a second through hole 11AH2 (see FIG. 1), and a third through hole 11AH3 (see FIG. 1). Each of the through holes 11AH1, 11AH2, and 11AH3 penetrates the upper wall along the thickness direction of the upper wall. The first through hole 11AH1 has a circular shape when viewed from a viewpoint facing the upper wall of the case body 11A. The first through hole 11AH1 is located approximately in the center of the upper wall. The second through hole 11AH2 and the third through hole 11AH3 are located around the first through hole 11AH1 when viewed from a viewpoint facing the upper wall. Each of the through holes 11AH2 and 11AH3 has a substantially arc shape concentric with the first through hole 11AH1.

[0039] The upper wall of the case body 11A further includes a fourth through hole 11AH4 and a fifth through hole 11AH5. Each of the through holes 11AH4 and 11AH5 penetrates the upper wall along the thickness direction of the upper wall. The fourth through hole 11AH4 and the fifth through hole 11AH5 sandwich the first through hole 11AH1, the second through hole 11AH2, and the third through hole 11AH3 in the first direction D1. When viewed from a viewpoint facing the upper wall, the fourth through hole 11AH4 and the fifth through hole 11AH5 each have a T-shape.

[0040] The case 11 has a pair of protruding pieces protruding from the case body 11A. The pair of protruding pieces is composed of a first protruding piece 11C1 and a second protruding piece 11C2. The pair of protruding pieces 11C1, 11C2 and the second cylindrical portion 11B2 are aligned along the first direction D1. Meanwhile, the pair of protruding pieces 11C1, 11C2 and the first cylindrical portion 11B1 are aligned along a direction perpendicular to the first direction D1. The pair of protruding pieces 11C1, 11C2 are aligned along a direction perpendicular to the first direction D1, and each of the protruding pieces 11C1, 11C2 has a shape extending along the first direction D1.

[0041] In the pair of protruding pieces 11C1, 11C2, the surface facing the other protruding piece 11C1, 11C2 is the inner surface, and the surface opposite to the inner surface is the outer surface. The first protruding piece 11C1 has an outer convex portion C1A protruding from the outer surface in a direction perpendicular to the first direction D1. The second protruding piece 11C2 also has an outer convex portion not shown. The outer convex portion protrudes from the outer surface of the second protruding piece 11C2 in a direction perpendicular to the first direction D1. The second protruding piece 11C2 has an inner convex portion C2B protruding from the inner surface in a direction perpendicular to the first direction D1. The first protruding piece 11C1 also has an inner convex portion not shown. The inner convex portion protrudes from the inner surface of the first protruding piece 11C1 in a direction perpendicular to the first direction D1.

[0042] The knob 12 is a member for opening the lid L. An occupant operates the knob 12 when opening the lid L. In this embodiment, the lid L is opened by pushing the knob 12. The surface of the knob 12 operated by the occupant is the operation surface, and the operation surface is exposed from an opening formed in the lid L. Note that, for convenience of illustration, in FIG. 3, the components of the knob 12 including the operation surface are omitted. The knob 12 includes a knob main body 12A having a substantially rectangular shape when viewed from a perspective facing the rear surface LR of the lid L.

[0043] The knob 12 includes a first insertion piece 12B1, a second insertion piece 12B2, and an insertion column 12C. The first insertion piece 12B1, the second insertion piece 12B2, and the insertion column 12C extend from the upper surface of the knob body 12A in a direction away from the back surface LR of the lid L. When viewed from a viewpoint facing the back surface LR of the lid L, the insertion column 12C is located approximately in the center of the knob body 12A, and the pair of insertion pieces 12B1, 12B2 sandwich the insertion column 12C in the first direction D1. The insertion column 12C has an approximately cylindrical shape. Each of the insertion pieces 12B1, 12B2 has a T-shape in a cross section along a direction perpendicular to the direction in which the insertion pieces 12B1, 12B2 extend. In each of the insertion pieces 12B1, 12B2, the cross sections having the T-shape are connected along the direction in which the insertion pieces 12B1, 12B2 extend.

[0044] When the knob 12 is attached to the case 11, the insertion post 12C is inserted through the first insertion hole 11AH1 of the case body 11A. The first insertion piece 12B1 is inserted through the fourth insertion hole 11AH4, and the second insertion piece 12B2 is inserted through the fifth insertion hole 11AH5. As a result, when the knob 12 is pushed in, the insertion post 12C and the insertion pieces 12B1 and 12B2 can change their positions relative to the case 11 while being inserted through the insertion holes 11AH1, 11AH4, and 11AH5 through which they were inserted, respectively.

[0045] The knob 12 further includes an arm 12D that protrudes from the knob body 12A. The arm 12D has a shape that extends along a first direction D1. A pin 12E is located at an end of the arm 12D that is remote from the knob body 12A. The pin 12E has a cylindrical shape that extends along a direction perpendicular to the first direction D1. The pin 12E is an example of an engagement portion.

[0046] When the knob 12 is attached to the case 11, the arm 12D is exposed to the outside of the case body 11A through a groove (not shown) that the case body 11A has. The groove is located between the pair of protruding pieces 11C1, 11C2 and the first cylindrical portion 11B1.

[0047] The knob 12 has a pair of protruding pieces 12F protruding from the knob body 12A. The protruding pieces 12F are located on sides of the knob body 12A that face each other and are parallel to the arm 12D. Each protruding piece 12F extends from the knob body 12A toward the side opposite the rear surface LR of the lid L. Each protruding piece 12F has a substantially triangular shape, and the width of the portion of each protruding piece 12F along the first direction D1 increases as the distance from the knob body 12A decreases.

[0048] Each protruding piece 12F is provided with a locking claw 12G that protrudes from the protruding piece 12F toward the outside of the knob body 12A midway along the extension of the protruding piece 12F. The locking claw 12G is located on a plane that intersects with the protruding piece 12F.

[0049] When the knob 12 is attached to the case 11, one of the locking claws 12G is located outside the case main body 11A through one of the second openings 11H2, so that the tip of the locking claw 12G comes into contact with the first flange portion 11F1. Meanwhile, the other of the locking claws 12G is located outside the case main body 11A through the other of the second openings 11H2, so that the tip of the locking claw 12G comes into contact with the second flange portion 11F2. The pair of locking claws 12G determine the position of the knob 12 relative to the case 11. When the pushed-in knob 12 returns to its original position, the pair of locking claws 12G are locked to the case 11, thereby restricting the movement of the knob 12.

[0050] The first spring 13 has a spiral shape extending along the direction in which the insertion column 12C of the knob 12 extends. The first spring 13 is a compression coil spring. When the knob 12 is attached to the case 11, the first spring 13 is attached to the knob 12 such that the insertion column 12C is located within the space defined by the first spring 13. In addition, by attaching the knob 12 to the case 11, one end of the first spring 13 contacts the knob main body 12A, and the other end contacts the upper wall of the case main body 11A. As a result, the first spring 13 biases the knob 12 in the direction opposite to the direction in which the knob 12 is pushed in.

[0051] The first rotating body 14 includes a first rotating body 14A having an annular shape. The first rotating body 14A has a circular hole 14AH. The first rotating body 14 includes a pair of arms extending from the first rotating body 14A toward the outside of the first rotating body 14A. The pair of arms includes a first arm 14B1 and a second arm 14B2. A first protrusion 14C1 is located on the upper surface of the first arm 14B1 at a portion located at an end portion away from the first rotating body 14A. The first protrusion 14C1 has a cylindrical shape extending in a direction away from the back surface LR of the lid L. A second protrusion 14C2 is located on the upper surface of the second arm 14B2 at a portion located at an end portion away from the first rotating body 14A. The second protrusion 14C2 has a cylindrical shape extending in a direction away from the back surface LR of the lid L.

[0052] The first rotating body 14 further includes a pair of arc-shaped pieces. The pair of arc-shaped pieces is composed of a first arc-shaped piece 14D1 and a second arc-shaped piece 14D2. The pair of arc-shaped pieces 14D1, 14D2 protrude from the upper surface of the first rotating body 14A in a direction away from the back surface LR of the lid L. The pair of arc-shaped pieces 14D1, 14D2 have an arc shape that follows the circumferential direction of the circular hole 14AH of the first rotating body 14A. The pair of arc-shaped pieces 14D1, 14D2 face each other in the radial direction of the first rotating body 14A and are separated from each other in the circumferential direction of the first rotating body 14A.

[0053] The first arc-shaped piece 14D1 includes a first claw portion D1C. The first claw portion D1C is located at approximately the center of the first arc-shaped piece 11D1 in the circumferential direction of the first rotating body 14A. The first claw portion D1C has a shape in which the width along the radial direction of the first rotating body 14A gradually increases along the direction opposite to the direction in which the first protrusion portion 14C1 protrudes. The second arc-shaped piece 14D2 includes a second claw portion D2C. The second claw portion D2C is located at approximately the center of the second arc-shaped piece 14D2 in the circumferential direction of the first rotating body 14A. The second claw portion D2C has a shape in which the width along the radial direction of the first rotating body 14A gradually increases along the direction opposite to the direction in which the second protrusion portion 14C2 protrudes.

[0054] When the first rotating body 14 is attached to the case 11, the first arc-shaped piece 14D1 is passed through the second through-hole 11AH2 (see FIG. 1), and the second arc-shaped piece 14D2 is passed through the third through-hole 11AH3 (see FIG. 1). As a result, the first claw portion D1C of the first arc-shaped piece 14D1 and the second claw portion D2C of the second arc-shaped piece 14D2 are engaged with the case main body 11A. When viewed from a viewpoint facing the upper wall portion of the case main body 11A, the length of the second through-hole 11AH2 is longer than the length of the first arc-shaped piece 14D1, and the length of the third through-hole 11AH3 is longer than the length of the second arc-shaped piece 14D2 in the circumferential direction of the first rotating body 14A. This allows the first rotor 14 to rotate about a rotation axis passing through the center of the circular hole 14AH, and the amount of rotation of the first rotor 14 is limited by the case main body 11A.

[0055] In addition, the first rotating body 14 is attached at a position where the protruding piece 12F of the knob 12 can interfere with the arms 14B1 and 14B2 when the knob 12 is pushed in. This allows the first rotating body 14 to rotate by an amount corresponding to the amount the knob 12 is pushed in.

[0056] The second rotating body 17 is journaled to the lid L. In this embodiment, the second rotating body 17 is journaled to the lid L via a case 11 attached to the lid L. The second rotating body 17 includes a second rotating main body 17A and a cam 17B. The cam 17B is an example of an engaged portion that engages with the engaging portion of the knob 12. As described above, in this embodiment, the pin 12E of the knob 12 is an example of an engaging portion, and the pin 12E moves along the shape of the cam 17B.

[0057] In this way, since the lock mechanism 10 of this embodiment includes the cam 17B and the pin 12E, the pin 12E moves along the shape of the cam 17B, and the rotational motion of the cam 17B is converted into the motion of the pin 12E. This makes it possible to change the state of the pin 12E between a state in which the pin 12E is engaged with the cam 17B and a state in which the pin 12E is not engaged with the cam 17B.

[0058] The end surface of the second rotating body 17A has an L-shape, and the second rotating body 17A has a shape in which L-shaped cross sections are connected in a direction perpendicular to the first direction D1. The second rotating body 17A has a first portion that is shaped along the first direction D1 and along the back surface LR of the lid L, and a second portion that is perpendicular to the first portion, i.e., perpendicular to the back surface LR of the lid L. An end of the second portion that is away from the first portion has an insertion hole 17AH1. The insertion hole 17AH1 opens on the surface opposite to the surface to which the first portion is connected, out of two opposing surfaces of the second portion. The first portion has an end that contacts the frame F when the lid L is closed.

[0059] The cam 17B is located on one of a pair of end faces of the second rotor 17. The cam 17B is located at a bent portion of the L-shape of the end face that faces the first cylindrical portion 11B1 in a direction perpendicular to the first direction D1. The cam 17B has a substantially triangular prism shape extending from the end face in a direction perpendicular to the first direction D1.

[0060] A pair of end faces of the second rotating body 17 are each provided with a fitting hole 17AH2. The fitting hole 17AH2 located on the same end face as the end face on which the cam 17B is located is fitted with the outer convex portion C1A of the first protruding piece 11C1. On the other hand, the fitting hole 17AH2 located on the other end face is fitted with the outer convex portion of the second protruding piece 11C2. In this way, the second rotating body 17 is attached to the case main body 11A in a state in which it can rotate about a rotation axis passing through the center of the pair of fitting holes 17AH2.

[0061] The second rotating body 17 is configured such that when the lid L is closed and the knob 12 is pushed in, the pin 12E engages with the cam 17B, thereby maintaining the knob 12 in the pushed-in state. The second rotating body 17 is also configured such that when the lid L is opened, the engagement between the cam 17B and the pin 12E is released, thereby returning the knob 12 to the state before it was pushed in.

[0062] The second spring 18 has a cylindrical shape extending along a direction perpendicular to the first direction D1. The second spring 18 is a torsion coil spring. The second spring 18 is disposed between the first protruding piece 11C1 and the second protruding piece 11C2. The inner convex portion of the first protruding piece 11C1 is inserted into one cylindrical end of the second spring 18, and the inner convex portion C2B of the second protruding piece 11C2 is inserted into the other cylindrical end. The second rotating body 17 is attached to the first protruding piece 11C1 and the second protruding piece 11C2, so that the second spring 18 is inserted into the second rotating body 17 through the insertion hole 17AH1. The second spring 18 is an example of a biasing portion that biases the second rotating body 17.

[0063] Since the locking mechanism 10 is provided with the second spring 18 that biases the second rotating body 17, it is possible to increase the probability that the second rotating body 17 will return to the state it was in before the lid L was opened after the lid L is opened, compared to a case in which the locking mechanism 10 does not have the second spring 18.

[0064] [Spring bias direction] With reference to Figs. 4 to 7, the biasing direction of each spring when the lid L is closed will be described. Fig. 4 shows a plan view of the locking mechanism 10 attached to the lid L, viewed from a viewpoint facing the front surface of the lid L. Note that in Fig. 4, the lid L is omitted for the sake of convenience in explaining the structure of the locking mechanism 10. Fig. 5 shows a cross-sectional structure of the locking mechanism 10 taken along line V-V in Fig. 4. Fig. 6 shows a cross-sectional structure of the locking mechanism 10 taken along line VI-VI in Fig. 4. Fig. 7 shows a plan view of the locking mechanism 10 attached to the lid L, viewed from a viewpoint facing the rear surface LR of the lid L.

[0065] 4, the knob 12 has an operation surface 12S having a substantially rectangular shape when viewed from a viewpoint opposite to the surface of the lid L. When the closed lid L is to be opened, an occupant pushes the operation surface 12S to push the knob 12 in.

[0066] The end of the second rotating body 17 that contacts the frame F is located between the frame F and the lid L. The arm 12D of the knob 12 protrudes from the case 11. The pin 12E of the knob 12 is located between the cam 17B of the second rotating body 17 and the lid L. The base end 15A of the first rod 15 is supported by the case 11, and the tip 15B of the first rod 15 is located on the opposite side of the frame F from the lid L. In other words, in the thickness direction of the frame F, the frame F is sandwiched between the end of the second rotating body 17 that contacts the frame F and the tip 15B of the first rod 15.

[0067] 5, the second spring 18 is attached between the pair of protruding pieces 11C1, 11C2, and the second rotating body 17 is attached to the protruding pieces 11C1, 11C2 so as to sandwich the pair of protruding pieces 11C1, 11C2. As a result, one end of the second spring 18 is pressed toward the frame F by contacting the case 11, and the other end is pressed toward the case 11 by contacting the second rotating body 17. As a result, the end of the second rotating body 17 is biased toward the frame F. In this way, the second spring 18, which is an example of a biasing portion, biases the end of the second rotating body 17 toward the frame F.

[0068] Among the positions of the second rotating body 17, the position of the second rotating body 17 when the lid L is closed and the second rotating body 17 is in contact with the frame F is the return position, and the position when the lid L is closed and the second rotating body 17 is rotated counterclockwise from the return position is the retracted position. As described above, when the second rotating body 17 is located in the return position, the second rotating body 17 is biased by the second spring 18. When the second rotating body 17 is located in the retracted position, a force against the biasing force of the second spring 18 acts on the second rotating body 17.

[0069] 6, the knob 12 is attached to the case 11 in a state where the first spring 13 is attached to the knob 12 so that the first spring 13 surrounds the outer circumferential surface of the insertion column 12C of the knob 12. At this time, the insertion column 12C of the knob 12 is inserted into the first insertion hole 11AH1 of the case body 11A, and the locking claws 12G of the knob 12 contact the first flange portion 11F1 and the second flange portion 11F2 of the case body 11A one by one (see FIG. 2). As a result, one end of the first spring 13 contacts the upper wall portion of the case body 11A, and the other end of the first spring 13 contacts the knob body 12A of the knob 12, and as a result, the first spring 13 biases the knob 12 in a direction away from the lid L.

[0070] Among the positions of the knob 12, the position of the knob 12 when the lid L is closed is the operating position, and the position of the knob 12 when the knob 12 is pressed to the maximum is the pressed-in position. As described above, when the knob 12 is in the operating position, the knob 12 is biased by the first spring 13. When the knob 12 is in the pressed-in position, a force against the biasing force of the first spring 13 acts on the knob 12.

[0071] 7 and as described above, the second rod 16 is biased in a direction from the first rod 15 toward the second rod 16 by the third spring 22, which is a torsion coil spring. As described above, the first rod 15 is connected to the second rod 16 via the first rotating body 14, and the biasing force of the third spring 22 is thereby also applied to the first rod 15 via the first rotating body 14. As a result, the third spring 22 biases the first rod 15 in a direction from the second rod 16 toward the first rod 15.

[0072] Among the positions of the first rotating body 14, the position of the first rotating body 14 when the lid L is closed and the first rotating body 14 is biased by the third spring 22 is the extended position. In contrast, the position when the lid L is closed and the arms 14B1, 14B2 are rotated clockwise from the extended position is the retracted position. As described above, when the first rotating body 14 is in the extended position, the first rotating body 14 is biased by the third spring 22. When the first rotating body 14 is in the retracted position, a force that resists the biasing force of the third spring 22 acts on the first rotating body 14.

[0073] [Cam Shape] The shape of cam 17B of second rotating body 17 will be described with reference to Fig. 8. Fig. 8 shows a planar structure of second rotating body 17 as viewed from a viewpoint opposite to the end face of second rotating body 17 on which cam 17B is located.

[0074] 8 and as described above, the second rotating body 17 includes a second rotating body 17A and a cam 17B. The end face of the second rotating body 17A is L-shaped, and the second rotating body 17A has a shape in which L-shaped cross sections having the same shape as the end face are connected together. In the second rotating body 17, the end attached to the case 11 is a first end 17A1, and the end that contacts the frame F when the lid L is closed is a second end 17A2.

[0075] The cam 17B has a substantially triangular prism shape and protrudes from the end face. The outer peripheral surface of the cam 17B is a cam surface having a cylindrical shape and includes three faces. The three faces are composed of an operating surface 17B1, a holding surface 17B2, and a returning surface 17B3. When viewed from a viewpoint facing the end face of the second rotating body 17A, the holding surface 17B2 and the returning surface 17B3 are perpendicular to each other. When viewed from a viewpoint facing the end face of the second rotating body 17A, the operating surface 17B1 is inclined with respect to both the holding surface 17B2 and the returning surface 17B3. That is, the operating surface 17B1 intersects with the holding surface 17B2 and the returning surface 17B3.

[0076] When the lid L is closed, the pin 12E of the knob 12 is away from the cam 17B of the second rotating body 17, whereas when the lid L is opened, the pin 12E moves along the cam surface of the cam 17B. At this time, the pin 12E first contacts the operating surface 17B1, and then contacts the holding surface 17B2. Finally, the pin 12E contacts the return surface 17B3. As a result, the position of the pin 12E relative to the position of the cam 17B of the second rotating body 17 returns to the same position as when the lid L was closed.

[0077] The position of the pin 12E when the lid L is closed and the pin 12E is biased by the first spring 13 is the initial position. In contrast, the position of the pin 12E when the pin 12E is held by the holding surface 17B2 of the cam 17B is the holding position.

[0078] [Effect] The operation of the lock mechanism 10 will be described with reference to Figures 9 to 12. Figure 9 shows the planar structure of the lock mechanism 10 as viewed from the direction facing the rear surface LR of the lid L. Figures 10 and 11 show the cross-sectional structure perpendicular to the operating surface 12S of the knob 12, together with the end face structure of the second rotating body 17. Note that in Figures 10 and 11, the pin 12E is shown for the convenience of explaining the position of the pin 12E relative to the position of the cam 17B.

[0079] When the lid L is opened, first, with the lid L in the closed position, the operation surface 12S of the knob 12 located in the operation position is pushed in by the occupant. This starts pushing the knob 12, so that the knob 12 moves from the operation position to the pushed-in position. At this time, the protruding piece 12F of the knob main body 12A is pushed toward the arms 14B1 and 14B2.

[0080] As a result, as shown in Fig. 9, the protruding piece 12F of the knob 12 interferes with the arms 14B1 and 14B2, causing the first rotating body 14 to rotate. As a result, the first rotating body 14 rotates from the extended position to the retracted position. In Fig. 9, the first rotating body 14 rotates clockwise against the biasing direction of the third spring 22. As a result, the tip 15B of the first rod 15 and the tip 16B of the second rod 16 start to retract from the locking grooves FG1 and FG2 along the first direction D1. That is, each rod 15 and 16 moves from the locked position to the unlocked position.

[0081] As shown in FIG. 10, when the rods 15, 16 are in the middle of retracting and the lid L is in the closed position, the pin 12E is pushed toward the cam 17B by pushing the knob 12. As a result, the pin 12E located in the initial position contacts the operating surface 17B1 of the cam 17B, and the second rotating body 17 rotates against the biasing force of the second spring 18. As a result, the second rotating body 17 rotates from the return position to the retracted position. In FIG. 10, the second rotating body 17 rotates counterclockwise. While the second rotating body 17 is rotating, the pin 12E moves while contacting the operating surface 17B1 of the cam 17B, and as a result, the pin 12E gradually approaches the holding surface 17B2.

[0082] As shown in FIG. 11, the pin 12E moves in contact with the operating surface 17B1, and as a result, the pin 12E comes into contact with the holding surface 17B2. Therefore, the pin 12E is located at the holding position. This releases the force of the pin 12E pushing the second rotating body 17, and the counterclockwise rotation of the second rotating body 17 stops. The second rotating body 17 rotates from the retracted position toward the return position. As a result, the second rotating body 17 is biased toward the frame F by the second spring 18. While the lid L is located at the closed position, the pin 12E is held by the holding surface 17B2 of the cam 17B. In this way, the second rotating body 17 is configured such that when the knob 12 is pushed in with the lid L closed, the pin 12E engages with the cam 17B, thereby holding the knob 12 in the pressed state.

[0083] When the knob 12 is pushed to the pushed-in position, the rods 15 and 16 are retracted from the locking grooves FG1 and FG2. In other words, the rods 15 and 16 are located at the unlocked position. As a result, the lid L starts to be displaced relative to the frame F. That is, the lid L starts to open.

[0084] As a result, as shown in FIG. 12, the second end 17A2 of the second rotating body 17 is separated from the frame F, and the second rotating body 17 is rotated clockwise in FIG. 12 by the biasing force of the second spring 18. As a result, the second rotating body 17 rotates to a release position where the pin 12E is separated from the holding surface 17B2 and is located on the return surface 17B3. At this time, the force pushing the operation surface of the knob 12 is also released, so the knob 12 is pushed up toward the operation position by the biasing force of the first spring 13. In addition, the pin 12E of the knob 12 moves from the holding surface 17B2 toward the return surface 17B3 with the rotation of the second rotating body 17 and the pushing up of the knob 12, and then moves along the return surface 17B3. In this way, the second rotating body 17 is configured such that the engagement between the cam 17B and the pin 12E is released by the opening of the lid L, thereby returning the knob 12 to the state before it was pushed in.

[0085] Furthermore, the knob 12 is pushed up by the biasing force of the first spring 13, so that the first rotating body 14 rotates clockwise in FIG. 9, which was previously referred to. This causes the first rotating body 14 to rotate from the retracted position to the pushed-out position. As a result, the rods 15 and 16 return to positions where the base ends 15A and 16A contact the cylindrical portions 11B1 and 11B2. That is, the rods 15 and 16 are in the locked position, similar to the state in which the lid L is in the closed position.

[0086] Therefore, when the lid L is in the open position, the knob 12 is returned to the operating position, which is the same position as when the lid L is closed. The first rotating body 14 is in the pushing position, the pair of rods 15, 16 are in the locking position, and the second rotating body 17 is in the returning position.

[0087] In this way, cam 17B is configured such that when knob 12 is pushed in, pin 12E moves along operating surface 17B1, so that pin 12E is positioned on holding surface 17B2, thereby maintaining the pushed-in state of knob 12. Cam 17B is also configured such that when lid L is opened, pin 12E moves from holding surface 17B2 to return surface 17B3, thereby returning knob 12 to the state before it was pushed in.

[0088] According to the lock mechanism 10, when the lid L is opened, the knob 12 returns to the state before it was pressed, so that even after the lid L is opened, and especially when the lid L is closed, the knob 12 is not maintained in the pressed state. Therefore, when the lid L is closed, the state of the knob 12 is prevented from causing a state in which the lid L cannot be closed.

[0089] In addition, the pin 12E of the knob 12 moves from the operating surface 17B1 of the cam 17B to the holding surface 17B2, and then from the holding surface 17B2 to the return surface 17B3, thereby making it possible to maintain the knob 12 in a pressed-in state and then return the knob 12 to the state it was in before being pressed in.

[0090] When the lid L is closed, the occupant pushes the lid L back toward the frame F, so that the lid L is fitted into the frame F. At this time, the inclined surfaces 15BS, 16BS at the tips 15B, 16B of the rods 15, 16 interfere with the frame F, so that the rods 15, 16 move along the first direction D1 against the biasing force of the third spring 22. Then, when the lid L is pushed back to the closed position where the rods 15, 16 do not interfere with the frame F, the rods 15, 16 move along the first direction D1 due to the biasing force of the third spring 22. As a result, the tips 15B, 16B of the rods 15, 16 are positioned in the locking grooves FG1, FG2. That is, the rods 15, 16 are positioned in the locking position. In addition, when the lid L is pushed to the closed position, the second end 17A2 of the second rotating body 17 comes into contact with the frame F. As a result, the second rotating body 17 is biased toward the frame F by the second spring 18.

[0091] As described above, according to one embodiment of the door lock mechanism, the following effects can be obtained. (1) According to the locking mechanism 10, when the lid L is opened, the knob 12 returns to the state before it was pressed in, so that even after the lid L is opened, and especially when the lid L is closed, the knob 12 is not maintained in the pressed state. Therefore, when the lid L is closed, the state of the knob 12 is prevented from causing the lid L to not close.

[0092] (2) Pin 12E moves along the shape of cam 17B, and the rotational motion of cam 17B is converted into the motion of pin 12E. This makes it possible to change the state of pin 12E between a state in which pin 12E is engaged with cam 17B and a state in which it is not engaged with cam 17B.

[0093] (3) The pin 12E of the knob 12 moves from the operating surface 17B1 of the cam 17B to the holding surface 17B2, and then moves from the holding surface 17B2 to the return surface 17B3, thereby enabling the knob 12 to maintain its pressed-in state and then to return to its state before it was pressed in.

[0094] (4) Compared to a case in which the locking mechanism 10 does not have the second spring 18, it is possible to increase the probability that the second rotating body 17 will return to the state it was in before the lid L was opened after the lid L is opened.

[0095] (5) The pair of rods 15, 16 and the second rotating body 17 are supported by one case 11. Therefore, by attaching the case 11 supporting the pair of rods 15, 16 and the second rotating body 17 to the lid L to which the present invention is applied, it is possible to attach both the pair of rods 15, 16 and the second rotating body 17 to the lid L.

[0096] The above-described embodiment can be modified as follows. [Locking mechanism] The locking mechanism 10 does not have to have a case 11 that supports both the rods 15, 16 and the second rotating body 17. In this case, for example, a holding part that holds the rods 15, 16 and a holding part that holds the second rotating body may be provided separately, or the target of the locking mechanism 10 may include holding parts that hold the rods 15, 16 and the second rotating body 17 separately.

[0097] The locking mechanism 10 does not have to include the second spring 18 that biases the second rotating body 17 toward the frame F. Even in this case, the locking mechanism 10 can obtain an effect equivalent to that of (1) above by including the pin 12E and cam 17B described above.

[0098] The engaging portion and the engaged portion of the locking mechanism 10 may be embodied as members having the structures shown in, for example, FIGS. As shown in FIG. 13, the locking mechanism may include an engaged member 31 and an engaging member 32. The engaged member 31 is generally L-shaped. The engaging member 32 includes a plate-shaped main body 32A and a pin 32B located at one end of the main body 32A. The pin 32B is an example of an engaging portion. The end of the main body 32A where the pin 32B is located is the tip, and the end opposite to the tip is the base end. A rotation axis A of the engaging member 32 passes through the base end, thereby allowing the engaging member 32 to rotate around the rotation axis A.

[0099] Figures 14 and 15 show the action of the engaged member 31 and the engaging member 32. Figure 14 shows a state in which the engaging member 32 is engaged with the engaged member 31. In contrast, Figure 15 shows a state in which the engagement of the engaging member 32 with the engaged member 31 is released.

[0100] 14, when the engaging member 32 is engaged with the engaged member 31, a part of the engaging member 32 covers a part of the engaged member 31 so that the vicinity of the tip of the engaged member 31 is located between the pin 32B and the rotation axis A. At this time, the pin 32B is in contact with the outer surface of the engaged member 31.

[0101] 15, when the engaging member 32 rotates counterclockwise around the rotation axis A, the pin 32B moves along the outer surface of the engaged member 31, and thereby the pin 32B comes off from the outer surface of the engaged member 31. As a result, the state in which the engaging member 32 is engaged with the engaged member 31 is released.

[0102] [Support member] The support member that supports the door may have a locking hole, which is a through hole, instead of a locking groove, as a locking portion for locking the tip 15B, 16B of each rod 15, 16. In this case, the position of the rods 15, 16 when the tip 15B, 16B of each rod 15, 16 is inserted into a locking hole where the other tip 15B, 16B is not located, is the locked position. On the other hand, the position of the rods 15, 16 when the tip 15B, 16B of each rod 15, 16 is retracted from the locking hole is the unlocked position.

[0103] [door] The application of the door lock mechanism is not limited to the lid of the glove box described above, but may be other doors such as the lid of a center console, etc. Even in this case, the door lock mechanism can provide the same effect as when the application is to the lid of a glove box.

[0104] [Universal issues] The door lock mechanism of the present disclosure, when applied to a vehicle, contributes to solving a universal problem of improving comfort inside the vehicle cabin, and in particular, contributes to solving a problem of improving the convenience of the glove box, center console, etc. [Explanation of symbols]

[0105] 10...Door lock mechanism 11. Case 12...Knob 12E…Pin 13…First spring 14…First rotating body 15…First rod 16…Second rod 17...Second rotating body 17B…Cam 17B1...Operating surface 17B2…Holding surface 17B3…Return surface

Claims

1. 1. A door lock mechanism for limiting displacement of a door relative to a support member surrounding the door, comprising: The support member includes a pair of locking portions that are recesses or through holes aligned along a first direction, A knob for opening the door, the knob having an engagement portion; a pair of rods arranged along the first direction, each of the pair of rods having a tip positioned within the locking portion where the tip of the other rod is not positioned, thereby maintaining the door in a closed state, and configured such that, when the knob is pressed, the tip of each rod is retracted outside the locking portion, thereby allowing the door to be opened; a rotating body that is pivotally supported on the door and has an engaged portion that engages with the engaging portion of the knob, the engaging portion engaging with the engaged portion when the door is closed, thereby maintaining the knob in a pressed state, and the engaging portion disengaging from the engaged portion when the door is opened, thereby returning the knob to the state before it was pressed in. Locking mechanism for doors.

2. the engaged portion is a cam, The engagement portion is a pin that moves along the shape of the cam.

2. The door lock mechanism according to claim 1.

3. The cam has a cam surface having a cylindrical shape, The pin moves along the cam surface, the cam surface includes an actuation surface, a retention surface, and a return surface, the actuation surface intersecting the retention surface and the return surface; The cam is configured such that, when the knob is pushed in, the pin moves along the operating surface, so that the pin is positioned on the holding surface, thereby holding the knob in the pushed-in state, and when the door is opened, the pin moves from the holding surface to the return surface, thereby returning the knob to the state before it was pushed in.

3. A door lock mechanism according to claim 2.

4. Further comprising a biasing portion for biasing the rotating body, The biasing portion biases the rotating body toward the support member. A door lock mechanism according to any one of claims 1 to 3.

5. The rotary actuator further includes a case for supporting the pair of rods and the rotary body. The case is configured to support each rod in a state in which the rods are movable along the first direction, and to support the rotor in a rotatable state. A door lock mechanism according to any one of claims 1 to 4.

Citation Information

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