JP6169487B2 - Door lock mechanism - Google Patents

Description

  The present invention relates to a door locking mechanism that locks a door such as a grab box or a console box in a vehicle compartment in a closed state, and in particular, a push-open type that can be unlocked and opened by a push operation of a knob. The present invention relates to a door locking mechanism.

As this type of door lock mechanism, for example, a technique disclosed in Patent Document 1 is known. In this technique, a pair of rods are assembled so as to slide in synchronization with each other on the back side of the door. These saddle rods receive urging forces in the directions toward the lock positions where the respective distal end portions respectively enter the lock holes of the instrument panel.
The door is held closed at the lock position of the rod rods, and by pushing the knob, the rod rods slide to the unlocked position where the individual tip portions are withdrawn from the lock holes. Can be opened.

JP 2009-269572 A

  In the push-open type that opens the door by pushing the knob, the operation direction of the knob and the direction of opening the door are contradictory, so even if you push the knob to open the door, the rod will move before the door opens. May return to the locked position again. As a countermeasure for this, for example, it is conceivable that the sliding speed when the rod rod moves toward the lock position by the urging force is delayed by a damper or the like. However, this measure causes a significant increase in cost, so it is not feasible.

  The present invention is intended to solve such problems. The purpose of the present invention is to open the door by a push operation of a knob, so that the tip of the rod rod reenters the lock hole before the door is opened. In addition to preventing, only one of the two rods entering the lock hole while the door is closed is avoided.

The present invention is for achieving the above object, and is configured as follows.
A pair of rod rods arranged on both sides of the door slide in synchronization with each other, and the front end of each knob enters the lock hole of the mating member to hold the door closed and push the knob. A door locking mechanism that can slide both rod rods against the urging force of a lock spring by an operation and can open the door at an unlocked position where each tip part has retreated from the lock hole of the mating member. The stays for providing a synchronization function to the sliding of the rod rods are individually coupled to the base ends of the rod rods.
These stays are set to move in the direction in which the both rods are slid from the locked position toward the unlocked position in response to the operation of the knob by the push operation. The knob operates while resisting the elastic force of the return spring by the push operation, and when the both rods are slid to the unlocked position, it engages with at least one of the both stays and the position together with both stays. It is comprised so that it may be hold | maintained. The engagement between the knob and the stay is configured to be released by an external force in the unlocking direction that acts on the stay from the side of the rod when the door is opened and closed.

More preferably, the following configuration is adopted.
A knob, a return spring, and both stays are assembled to the case fixed to the door. The knob moves the stay by the push operation, and has at least four claws for engaging the stay and holding the knob and the stay in that position when the both rods are slid to the unlocked position. And the knob is configured to operate in a state in which these claw portions are in contact with the four corners in the case.

In the present invention, when the door is opened by the push operation of the knob, the knob and the stay hold the both rods in the unlocked position so that the push operation direction and the door opening direction are In spite of the conflict, the trouble that the tip of the rod rod enters the lock hole of the mating member again before the door is opened is prevented, and the door can be opened reliably.
And the holding of the state where both rod rods are slid to the unlocking position is released by the external force in the unlocking direction acting on the stay from the rod rod side when opening and closing the door, and the rod rods are mutually connected. By sliding in synchronism, even when an external force in the unlocking direction is applied to only one of the two rods when the door is closed, the holding of the both rods is released together. As a result, it is possible to avoid one-side hooks in which only one of the two rods enters the lock hole of the mating member while the door is closed, and prevent the door from being opened while the vehicle is running or preventing the door from being deformed by the one-side hook. Can do.

  Also, by operating the knob with the respective claws in contact with the four corners of the case, even when the knob is pushed in a biased position, the operation of the knob becomes stable and the operation fee is reduced. The ring is improved.

The perspective view showing the lock mechanism for doors. The perspective view which represented the structural member of the lock mechanism for doors in the decomposition | disassembly state. The perspective view showing the lock part of the lock mechanism for doors. Sectional drawing showing the locking mechanism for doors in the state which closed the door. Sectional drawing showing the locking mechanism for doors just before opening a door. Sectional drawing showing the locking mechanism for doors immediately after closing a door.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
In the drawing, a lock mechanism for a grab box door is shown. The door 10 shown in FIGS. 3 and 4 is assembled to an instrument panel (instrument panel) 16 as a counterpart member so that the door 10 can be opened and closed by a rotation operation using a hinge (not shown) as a fulcrum. In the lock mechanism of the present embodiment, the pair of left and right rod rods 12 are assembled so as to be slidable in the left-right direction inside the door 10. The two rods 12 can be held in a state where the doors are closed at the locked positions where the respective distal end portions 12 a respectively enter the lock holes 18 of the instrument panel 16. In addition, the door 10 can be opened at the unlocked position in which the distal end portion 12 a of the double rod 12 has been withdrawn from the lock hole 18 of the instrument panel 16.
In FIG. 3, the lock position of one of the rod rods 12 (left side of the drawing) is indicated by a solid line, and the lock release position is indicated by an imaginary line A.

The two rods 12 can slide in synchronization with each other as will be described later. For this reason, both the rod rods 12 are urged in the direction toward the lock position by the elastic force of the lock spring 14 hung between the rod rod 12 on one side (left side of the drawing) and the door 10.
Each base end portion 12b of the double rod 12 is provided with a spherical connecting portion 12c (FIG. 2). These connecting portions 12c are individually fitted into connecting portions 22a having a U-shaped cross section provided at the ends of a pair of stays 22 to be described next, whereby the base end portions 12b of the double rods 12 are Both stays 22 are individually coupled.

  A case 20 incorporated in the opening of the door 10 is fixed by screw fastening (FIGS. 4 to 6). In the case 20, both the stays 22 are incorporated so as to be slidable in the left-right direction. These stays 22 are provided with racks 22b provided on the surfaces facing each other in the vertical direction. These racks 22b mesh with pinions 26 that are rotatably supported in the case 20 from above and below. As a result, the double rods 12 can slide in the locking direction or the unlocking direction in synchronization with each other through the meshing of the racks 22b of the stays 22 and the pinions 26 that are individually coupled.

  Both stays 22 are provided with projecting pieces 24 protruding from the upper and lower surfaces. Each of these protrusions 24 is provided with a convex portion 24a and an inclined surface 24b constituting one side surface of the convex portion 24a as shown in the enlarged portion of FIG. The function of each of the convex portions 24a and the inclined surface 24b will be described in detail in connection with the knob 30 described below.

The knob 30 is assembled to the case 20 from the front opening side. A return spring 34 is provided between the knob 30 and the inner surface of the case 20 (FIG. 2). For this reason, the knob 30 in the normal state is held at the return position shown in FIG. 4 under the urging force of the return spring 34. By pushing the knob 30 in the return position against the urging force of the return spring 34, the knob 30 can be operated to the position where it is pushed into the case 20 as shown in FIG.
When the urging force of the return spring 34 acting on the knob 30 and the urging force of the lock spring 14 acting on the rod rod 12 are compared, the former is set smaller for the reasons described later. .

The knob 30 is provided with a total of four claw portions 32 on the left and right sides, two on each side. Each of these claw portions 32 protrudes so as to come into contact with the four corners in the case 20. For this reason, the knob 30 operates in a state where the four claw portions 32 are in contact with the four corners in the case 20.
Each claw portion 32 includes a concave portion 32a that can be individually engaged with the convex portion 24a of each protruding piece 24 in both stays 22, and an inclined surface 32b that individually contacts the inclined surface 24b of each protruding piece 24 ( FIG. 4). In addition, the recessed part 32a and the inclined surface 32b of the nail | claw part 32 are mutually continuous.

Next, the unlocking operation of the door locking mechanism will be described.
Now, it is assumed that the both rod rods 12 are in a locked position where their respective distal end portions 12a enter the lock holes 18 of the instrument panel 16, and the door 10 is held in a closed normal state. Therefore, when the knob 30 located at the return position shown in FIG. 4 is pushed to open the door 10, both contact surfaces of the inclined surfaces 32 b of the claw portions 32 and the inclined surfaces 24 b of the projecting pieces 24 of both stays 22 cause The stay 22 slides in the unlocking direction together with the double rod 12.

When the knob 30 is actuated to the position shown in FIG. 5 by a push operation, the both rod rods 12 slide to the unlocking position, and at the same time, the concave portions 32a of the claw portions 32 of the knob 30 and the protrusions 24 of both stays 22 are provided. The convex portion 24a engages. At this time, the urging force of the lock spring 14 acts on the both rod rods 12, and this urging force is superior to the urging force of the return spring 34 acting on the knob 30, so that the recess 32 a of each claw portion 32. And the protrusion 24a of each protrusion 24 are kept engaged.
Thereby, both the rod rods 12 are held in the unlocked position, and the front end portion 12a of the rod rod 12 is opened before the door 10 is opened although the direction in which the knob 30 is pushed and the direction in which the door 10 is opened are contradictory. Is prevented from entering the lock hole 18 of the instrument panel 16 again.

  When the opened door 10 is closed, the rotational operation amount of the door 10 is slightly overstroked. For this reason, the leading end portion 12a of the rod rods 12 interferes with a part of the instrument panel 16 due to the overstroke of the door 10, and these rod rods 12 are substantially imaginary lines from the unlocked position indicated by the phantom line A in FIG. Move to the position indicated by B. As a result, an external force acts on both stays 22 from the side of the rod rod 12, and each projecting piece 24 of both stays 22 instantaneously moves to the position shown in FIG. For this reason, the convex portions 24a of the respective projecting pieces 24 are separated from the concave portions 32a of the respective claw portions 32, the mutual engagement is released, the both rod rods 12 slide to the locked position, and the knob 30 is imaginary in FIG. It returns to the position indicated by the line, that is, the return position shown in FIG.

By making the overstroke when closing the door 10, even if a biased force is applied to the door 10 and it is pushed in a twisted state, when an external force acts on both stays 22 from the side of the rod rod 12, The saddle rod 12 has also reached the position of the lock hole 18, and both rod rods 12 slide to the lock position. Therefore, it is possible to avoid a one-hanging state in which only one of the two rods 12 enters the lock hole 18.
Further, in the push operation of the knob 30, by operating the four claw portions 32 in contact with the four corners of the case 20 as described above, the push position when the knob 30 is pushed is biased. Stable operation can be obtained.

Although the best mode for carrying out the present invention has been described above with reference to the drawings, this embodiment can be easily changed or modified without departing from the spirit of the present invention.
For example, as shown in FIG. 5, by applying an external force to both stays 22 from the both rod rods 12 held at the unlocking position, each projecting piece 24 of both stays 22 and each claw portion 32 of knob 30 The means for releasing the engagement is not limited to utilizing the overstroke when the door 10 is closed. As an alternative to this, in the process of opening the door 10 in a state where the both rods 12 are held in the unlocked position, the tip 12a of the both rods 12 passes through the lock hole 18 of the instrument panel 16, and then the tip It is also possible to cause the external force in the unlocking direction to act on both stays 22 by causing the portion 12a to interfere with a part of the instrument panel 16.

DESCRIPTION OF SYMBOLS 10 Door 12 閂 Rod 12a Front end part 12b Base end part 14 Lock spring 16 Instrument panel
18 Lock hole 20 Case 22 Stay 30 Knob 32 Claw 34 Return spring

Claims (2)

A pair of rod rods arranged on both sides of the door slide in synchronization with each other, and the front end of each knob enters the lock hole of the mating member to hold the door closed and push the knob. A door locking mechanism that can slide both rod rods against the urging force of a lock spring by an operation and can open the door at an unlocked position where each tip part has retreated from the lock hole of the mating member. ,
Stays for synchronizing the sliding movement of these rod rods are individually connected to the base ends of the rod rods, and these stays receive the operation of the knob by the push operation to lock the rod rods in the locked position. The knob is set to move in the direction to slide toward the unlocking position, and the knob is operated against the elastic force of the return spring by the push operation, and the both rods are slid to the unlocking position. It is sometimes configured to engage with at least one of the stays and be held in that position together with the stays, and the engagement between the knob and the stay is from the side of the rod to the stay when the door is opened and closed. A door locking mechanism configured to be released by an external force acting in an unlocking direction. The door locking mechanism according to claim 1,
A knob, return spring, and both stays are assembled to the case fixed to the door. When this knob moves the stay by its push operation, it slides both rods to the unlocked position. The door includes at least four claw portions that engage with the stay to hold the knob and the stay in that position, and the knob is operated in a state where these claw portions are in contact with the four corners of the case. Locking mechanism.

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