JP2004176415A - Door latch device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To miniaturize a device while lightening the opening operation of an inside handle. <P>SOLUTION: An inside_handle lever 41 is borne through an inside_handle lever shaft 42 so as to be rocked by the opening operation of the inside handle, and the opening operation is transmitted to a latch mechanism by the rocking. A pushing member 46 bearing a base end 46a is installed to a lever 41 through a supporting shaft 47 parallel with a supporting shaft 42. The free end 46b of the pushing member 46 can be rocked in the direction brought near to the supporting shaft 42. The free end 46b of the pushing member 46 pushes a locking control lever 37 from a locked place to an unlocked place by the rocking of the lever 41 by the opening operation of the inside handle. The rocking is shunted by a pushing operation, in which the free end 46b of the pushing member 46 is positioned from the unlocked place of the locking control lever 37 to the locked place at a place where the lever 41 is rocked with the opening operation of the inside handle under the state of a door opening. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a door latch device having a lock mechanism for holding a door closed with respect to a vehicle body and locking the closed door, and in particular, locks the lock mechanism by operating a sill knob when the door is opened. A keyless lock function that locks the door by closing the door and a one-motion opening function that unlocks and opens the door by opening the inside handle when the lock mechanism is locked with the door closed The present invention relates to a door latch device having the same.
[0002]
[Prior art]
The door latch device holds the closed door, and has a lock mechanism for locking the closed door. This door latch device locks the lock mechanism so that the door is not opened even when the outside handle is opened by closing the lock mechanism when the door is closed. When the lock mechanism is unlocked, the door can be opened by opening the outside handle or the inside handle. The locked state and the unlocked state of the lock mechanism are performed by a key operation from the outside of the door or a sill knob from the inside of the door.
[0003]
A general door latch device has a keyless lock function that locks the lock mechanism by operating a sill knob when the door is opened, and locks the door when the door is closed. This keyless lock function enables the sill knob to be operated only when the outside handle or the inside handle is opened, so that the sill knob can only be operated when the door is opened and the sill knob is locked. I can do it. In addition, in a general door latch device, in addition to the keyless lock function described above, when the closed door is locked, the inside handle is opened to unlock the lock mechanism and the latch device engaged with the vehicle body is released. There is a one-motion opening function to open the door.
[0004]
As described above, in the general door latch device having both the keyless locking function and the one-motion opening function, the opening operation of the inside handle can set the lock mechanism to the unlocked state on the one hand and the lock mechanism to the locked state on the other hand. Thus, it is necessary to prevent the interference between the operation between the inside handle and the lock mechanism.
[0005]
For this reason, in the conventional door latch device, as shown in FIG. 10A, the pressing body 102 is swingably supported on the tip of the inside lever 101 which swings by opening the inside handle (not shown). is there. The pressing body 102 is provided with a pin 102a that is in sliding contact with a hole edge 103a formed on the fixed mounting bracket 103. The pin 102a slides on the hole edge 103a after the operation of pushing the lock lever 104 to the unlocked position by the swing of the inside lever 101, swings, and moves away from the lock lever 104 by the swing of the inside lever 101. That is, as shown in FIG. 10B, when the inside handle (not shown) is opened in connection with the one-motion opening function, the pressing body 102 pushes the lock lever 104 to the unlocked position. Further, as shown in FIG. 10 (c), when the inside handle (not shown) is opened in connection with the keyless locking function, the pressing body 102 moves away from the lock lever 104, so that the one-dot chain line in FIG. Does not interfere with the lock lever 104 that is in the locked state as shown by (for example, see Patent Document 1).
[0006]
In another conventional door latch device, as shown in FIG. 11A, an opening of an inside handle (not shown) pushes a pin 111 of the latch mechanism to release the latch mechanism. An engaging portion 112a for pushing the lock lever 113 of the lock mechanism to the unlocked position is provided. The lock lever 113 has a cam surface 113a in the vicinity of the center of swing thereof, with which the engaging portion 112a of the link 112 abuts. The link 112 transmits an opening operation of an inside handle (not shown) via an intermediate lever (not shown) and an inner open lever (not shown), and the lock lever 113 is unlocked. Is pivotally supported by an inner open lever (not shown) so that the engaging portion 112a is disengaged from the cam surface 113a after the operation of pushing to the position shown in FIG. That is, as shown in FIG. 11B, when the inside handle (not shown) is opened in connection with the one-motion opening function, the engaging portion 112a of the link 112 pushes the cam surface 113a of the lock lever 113 to unlock the door. Move to the locked position. Further, as shown in FIG. 11C, when the inside handle (not shown) is opened in connection with the keyless locking function, the engaging portion 112a is disengaged from the cam surface 113a of the lock lever 113. ) Does not interfere with the lock lever 113 that is locked as indicated by the one-dot chain line (for example, see Patent Document 2).
[0007]
[Patent Document 1]
JP-A-62-253886
[Patent Document 2]
JP-A-4-216787
[0008]
[Problems to be solved by the invention]
However, in the above-described conventional door latch device (Patent Document 1), when the inside handle is opened, the pin 102a provided on the pressing body 102 slides on the hole edge 103a formed on the fixed mounting bracket 103 and swings. Therefore, when opening the inside handle regardless of the one-motion opening function and the keyless lock function, the sliding contact resistance between the pin 102a and the hole edge 103a is always transmitted to the inside handle, so that the opening operation of the inside handle becomes heavy. There is a problem that.
[0009]
Further, in the conventional door latch device (Patent Literature 1), the pressing body 102 swings by the swing of the inside lever 101 so as to protrude outside the swing track of the inside lever 101, that is, the outside of the device, and the lock lever 102 Departs from 104. For this reason, it is necessary to prepare an area on the outer periphery of the door latch device that allows the pressing body to swing, and the device becomes large.
[0010]
In another conventional door latch device described above (Patent Literature 2), a cam surface 113a near the center of swing of a lock lever 113 of a lock mechanism is pressed by an engagement portion 112a at the tip of a link 112. The link 112 is also configured to release the latch mechanism, and transmits the opening operation of the inside handle to the lock mechanism and the latch mechanism via a plurality of components (an intermediate lever and an inner open lever). Therefore, the operation of pushing the lock lever 113 of the lock mechanism is performed via a plurality of components, and the engagement portion 112a pushes the vicinity of the swing center of the lock lever 113, so that the opening operation of the inside handle becomes heavy. There is.
[0011]
In view of the above-described circumstances, the present invention has both a one-motion opening function and a keyless lock function including an opening operation of the inside handle or the outside handle, and lightly performs the opening operation of the inside handle. An object of the present invention is to provide a door latch device that can reduce the size of the device.
[0012]
[Means for Solving the Problems]
To achieve the above object, a door latch device according to a first aspect of the present invention is characterized in that when the inside handle is opened, the handle lever is swung so as to engage with the lock operation lever. The door handle is displaced from the locked position to the unlocked position, and the opening operation of the inside handle is transmitted to the latch mechanism to release the engagement between the latch and the ratchet to open the door. A pressing member is provided on the pivot shaft of the lever so as to be swingable, and when the inside handle is opened, the pressing member is engaged with the lock operation lever to unlock the lock operation lever from the lock position. While the inside handle is opened, the lock operation lever and the pressing portion are displaced. Doo is characterized in that so as to swing the pressing member to the lock lever in engagement to permit its movement when it is operated toward the locked position.
[0013]
The door latch device according to a second aspect of the present invention is the door latch device according to the first aspect, wherein the pressing member is swingable in a direction approaching a swing axis of the handle lever.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of a door latch device according to the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a front view showing a door latch device according to an embodiment of the present invention, FIG. 2 is a left side view showing the door latch device, and FIGS. 3A to 3C are conceptual diagrams showing the operation of the latch mechanism.
[0015]
The door latch device exemplified in the present embodiment is provided on a side door (not shown) of a front hinge disposed on a driver's seat of an automobile. The door latch device is provided on a latch mechanism 1 and a latch frame 2 integrated with the latch mechanism 1. The latch frame 2 is formed by, for example, bending or perforating a sheet metal. The latch frame 2 is fixed to face the front side of the latch mechanism 1 (the front side of the vehicle body), and the right side to the front side of the board 2A. And a side plate portion 2B that is bent so as to protrude from the main body, and is substantially L-shaped when viewed from above.
[0016]
As shown in FIG. 3, the latch mechanism 1 is housed in a latch body 3 mainly formed of a synthetic resin. The latch body 3 has a horizontal cutout groove 3a extending substantially in the horizontal direction and opening toward the interior of the vehicle at a position substantially at the center in the height direction. The latch mechanism 1 is for engaging and holding a striker S provided on the vehicle main body side in the horizontal cutout groove 3a, and includes a latch 4 and a ratchet 5.
[0017]
The latch 4 is provided at a position above the horizontal notch groove 3a of the latch body 3 so as to be swingable via a latch shaft 6 and has a substantially C shape, and has a meshing groove 4a, a hook portion 4b, It has a first locking portion 4c and a second locking portion 4d.
[0018]
The engagement groove 4a is formed by cutting out from the outer peripheral surface of the latch 4 toward the latch shaft 6, and has a width capable of accommodating the striker S. The hook portion 4b is a substantially C-shaped one end side on which the engagement groove 4a is formed. When the latch 4 is swung around the latch shaft 6 and the engagement groove 4a is opened downward, This portion is located on the indoor side with respect to the engagement groove 4a. The first locking portion 4c is a substantially C-shaped one end side on which the engagement groove 4a is formed. The first engagement portion 4c swings the latch 4 about the latch shaft 6 to open the engagement groove 4a downward. In this case, it is a portion located on the outdoor side of the engagement groove 4a. The second locking portion 4d is formed so as to bulge out on the outer peripheral portion of the latch 4 on the first locking portion 4c side, swings the latch 4 around the latch shaft 6, and turns the engagement groove 4a downward. This is a portion that is located on the outdoor side of the first locking portion 4c when opened. Although not explicitly shown in the figure, a latch spring is provided between the latch 4 and the latch body 3 to constantly bias the latch 4 counterclockwise in FIG.
[0019]
The ratchet 5 is provided at a position below the horizontal notch groove 3a of the latch body 3 so as to be swingable via a ratchet shaft 7, and has an engaging portion 5a and a working pin 5b.
[0020]
The engagement portion 5a is a portion that extends radially outward from the ratchet shaft 7 toward the outdoor side. The action pin 5b extends forward of the vehicle body at a position below the tip of the engagement portion 5a. When the ratchet 5 swings clockwise in FIG. 3, the engaging portion 5 a can engage the tip with the first locking portion 4 c and the second locking portion 4 d of the latch 4. The action pin 5b projects forward of the latch body 3 through an arc-shaped hole 3b provided in the latch body 3. The arc-shaped hole 3b is formed so as not to hinder the action pin 5b swinging around the axis of the ratchet shaft 7 when the ratchet 5 swings. Although not explicitly shown in the figure, a ratchet spring that constantly urges the ratchet 5 clockwise in FIG. 3 is provided between the ratchet 5 and the latch body 3.
[0021]
In the latch mechanism 1 configured as described above, when the door (not shown) is in an open state with respect to the vehicle body, the latch 4 is arranged at the open position as shown in FIG. Will be. The open position is a position where the hook portion 4b opens the horizontal cutout groove 3a and the first locking portion 4c crosses the horizontal cutout groove 3a when the latch 4 is swung counterclockwise. When the door (not shown) is closed from this state, the striker S provided on the vehicle body comes into contact with the first locking portion 4c of the latch 4. As a result, the latch 4 swings clockwise in FIG. 3 against the elastic force of the latch spring (not shown). During this time, the tip of the engagement portion 5a of the ratchet 5 slides on the outer peripheral surface of the latch 4 by the elastic force of the ratchet spring (not shown). Swings around the axis of.
[0022]
When the door (not shown) is further closed from the above-described state, the amount of the striker S entering the horizontal cutout groove 3a gradually increases, so that the latch 4 pushed by the striker S further swings clockwise. . Eventually, as shown in FIG. 3B, the second locking portion 4d of the latch 4 reaches the engaging portion 5a of the ratchet 5. The ratchet 5 swings clockwise by the elastic restoring force of a ratchet spring (not shown) when the second locking portion 4d passes. As a result, as shown in FIG. 3B, the second locking portion 4d of the latch 4 comes into contact with the tip of the engaging portion 5a of the ratchet 5, and resists the elastic restoring force of the latch spring (not shown). The counterclockwise swing of the latch 4 is prevented. Moreover, since the hook 4b of the latch 4 crosses the horizontal notch 3a, the hook 4b causes the striker S to move away from the horizontal notch 3a, that is, the door (not shown) opens with respect to the vehicle body. The operation is blocked (half latch state).
[0023]
Subsequently, when the door (not shown) is further closed from the half-latched state, the latch 4 further swings clockwise through the first locking portion 4c by the striker S entering the horizontal notch groove 3a. . Eventually, as shown in FIG. 3C, the striker S reaches the inner side (outside of the room) 3a of the horizontal cutout groove, and the first locking portion 4d of the latch 4 reaches the engaging portion 5a of the ratchet 5. The ratchet 5 swings clockwise by the elastic restoring force of a ratchet spring (not shown) when the second locking portion 4d passes. As a result, as shown in FIG. 3C, the first locking portion 4d of the latch 4 comes into contact with the tip of the engaging portion 5a of the ratchet 5, and resists the elastic restoring force of the latch spring (not shown). The counterclockwise swing of the latch 4 is prevented. Even in this state, since the hook portion 4b of the latch 4 crosses the horizontal notch groove 3a, the hook portion 4b prevents the striker S from moving away from the depth (outside of the room) of the horizontal notch groove 3a, As a result, the door (not shown) is held in a closed state with respect to the vehicle body (full latch state).
[0024]
Further, the action pin 5b of the ratchet 5 is swung counterclockwise around the ratchet shaft 7 against the elastic force of the ratchet spring (not shown) from the above-described full latch state. Thereby, the contact engagement state between the second locking portion 4d of the latch 4 and the engagement portion 5a of the ratchet 5 is released, and the latch 4 is counterclockwise in FIG. 3 by the elastic restoring force of the latch spring (not shown). Rocks around. As a result, as shown in FIG. 3A, the horizontal notch groove 3a is opened, the striker S can be moved in a direction to separate from the horizontal notch groove 3a, and the door (not shown) is opened with respect to the vehicle body. Can work.
[0025]
As shown in FIGS. 1 and 2, a first latch release unit 11, a second latch release unit 21, and a lock mechanism 31 are provided on the front side of the latch body 3 (the front side of the vehicle body).
[0026]
FIGS. 4A and 4B are front views showing the first latch release means. The first latch release means 11 swings the above-described ratchet 5 counterclockwise in response to an opening operation of an inside handle (not shown) provided on the indoor side of a door (not shown), and a latch mechanism. 1 is released from a full latch state or a half latch state, so that a door (not shown) can be opened with respect to the vehicle body. The first latch release means 11 has an inside open lever 12 and an inside link 13.
[0027]
As shown in FIG. 4A, the inside open lever 12 is swingably provided via the latch shaft 6 above the front side of the latch body 3. The inside open lever 12 extends one end 12a to the right in FIG. 4A, which is a radial direction of the latch shaft 6, and extends the other end 12b to the opposite left in FIG. 4A. I have. At one end 12a of the inside open lever 12, an engagement piece 12c extending forward is formed by bending. As shown in FIGS. 1 and 2, the engagement piece 12 c projects forward from the play hole 2 Aa of the board 2 A of the latch frame 2 fixed to the front side of the latch body 3, and forms an inside handle (not shown). It comes into contact with an inside handle lever 41 to be described later, which is activated by the opening operation. At the other end 12b of the inside open lever 12, a contact piece 12d extending forward is bent. The abutting piece 12d abuts on a abutting portion 3c formed on the front side of the latch body 3 to regulate the clockwise swing of the inside open lever 12.
[0028]
As shown in FIG. 4A, the inside link 13 is provided on the front left side of the latch body 3. The inside link 13 is formed in a vertically long shape, and the upper end 13 a thereof is swingably provided via the support shaft 14 with respect to the other end 12 b of the inside open lever 12. The lower end 13b of the inside link 13 faces the action pin 5b of the ratchet 5 protruding from the arc-shaped hole 3b of the latch body 3. An elongated hole 13c is formed in the middle of the inside open lever 12 along the longitudinal direction. The elongated hole 13c is locked to a locking projection 3d protruding from the latch body 3.
[0029]
As shown in FIG. 4B, when the inside open lever 12 swings counterclockwise about the latch shaft 6 as shown in FIG. 4B, the first latch release means 11 is provided at the other end 12b. The inside link 13 moves down. The inside link 13 moves downward while the upper end 13a swings with respect to the other end 12b of the inside open lever 12 while the elongated hole 13c is guided by the locking projection 3d. As the inside link 13 moves downward, the inside link 13 pushes the action pin 5b downward at the lower end 13b to swing the ratchet 5 counterclockwise. As a result, the latch mechanism 1 is released from the full latch state (half latch state).
[0030]
FIGS. 5A and 5B are front views showing the second latch release means. The second latch release means 21 latches the aforementioned ratchet 5 by swinging it in a counterclockwise direction in response to an opening operation of an outside handle (not shown) provided on the outdoor side of a door (not shown). The mechanism 1 releases the full-latch state or the half-latch state, so that a door (not shown) can be opened with respect to the vehicle body. The second latch release means 21 has an outside open lever 22 and an outside link 23.
[0031]
As shown in FIG. 5A, the outside open lever 22 is swingably provided via the latch shaft 6 above the front side of the latch body 3. An open lever spring 24 is wound around the latch shaft 6. The open lever spring 24 has one end 24a engaged with the latch body 3 side (contact portion 3c) and the other end 24b engaged with the outside open lever 22 side. Thereby, the open lever spring 24 constantly urges the outside open lever 22 clockwise around the latch shaft 6 in FIG.
[0032]
The outside open lever 22 has an arm portion 22a extending to the left in FIG. At the tip of the arm 22a, there is provided a long hole 22b that forms an arc in the vertical direction about the latch shaft 6. A connecting means (not shown) such as a connecting rod connected to the outside handle (not shown) is engaged with the elongated hole 22b.
[0033]
As shown in FIG. 5A, the outside link 23 is provided on the front left side of the latch body 3. The outside link 23 is formed in a vertically long shape, and its upper end 23 a is swingably provided on the arm 22 a of the outside open lever 22 via the support shaft 25. On the rear surface of the lower end 23b of the outside link 23, a through groove 23c extending upward along the longitudinal direction of the outside link 23 is formed. The through groove 23c has a groove width that allows the action pin 5b of the ratchet 5 protruding from the arc-shaped hole 3b of the latch body 3 to be inserted. In the middle of the outside link 23, a pressing portion 23d protruding rightward is formed. The pressing portion 23d faces the action pin 5b of the ratchet 5 protruding from the arc-shaped hole 3b of the latch body 3. On the left side of the surface where the pressing portion 23d faces the action pin 5b, a cutout portion 23e communicating with the through groove 23c is formed. On the front surface of the lower end 23b of the outside link 23, a guide groove 23f extending upward along the longitudinal direction of the outside link 23 is formed. The guide groove 23f is engaged with an engagement pin 35b of the lock mechanism 31, which will be described later.
[0034]
As shown in FIG. 5B, when the outside open lever 22 swings counterclockwise around the latch shaft 6 as shown in FIG. The provided outside link 23 moves down. The outside link 23 moves downward with the guide groove 23f being guided by the engagement pin 35b of the lock mechanism 31, while the upper end 23a swings with respect to the arm 22a of the outside open lever 22. The outside link 23 pushes the action pin 5b downward with the pressing portion 23d with the downward movement of the outside link 23, and swings the ratchet 5 counterclockwise. As a result, the latch mechanism 1 is released from the full latch state (half latch state).
[0035]
As shown in FIG. 1, the outside open lever 22 is separate from the inside open lever 12, and is provided on the front side of the inside open lever 12 so as to overlap. The arm portion 22a of the outside open lever 22 contacts the contact piece 12d of the inside open lever 12 while being urged clockwise by the open lever spring 24. This restricts the swing of the outside open lever 22 urged clockwise. That is, the outside open lever 22 also applies the elastic force of the open lever spring 24 to the inside open lever 12. Therefore, the inside open lever 12 always swings both the outside open lever 22 counterclockwise against the elastic force of the open lever spring 24 via the outside open lever 22 when swinging. On the other hand, the outside open lever 22 swings counterclockwise independently of the inside open lever 12 against the elastic force of the open lever spring 24.
[0036]
Further, as shown in FIG. 1, the outside link 23 is provided to overlap the front side of the inside link 13. The outside link 23 operates to release the latch mechanism 1 when the outside open lever 22 swings alone. The inside link 13 operates to release the latch mechanism 1 when the inside open lever 12 swings together with the outside open lever 22.
[0037]
FIGS. 6A to 6C are front views showing the lock mechanism. The lock mechanism 31 makes it impossible to transmit the release operation of the second latch release means 21 to the ratchet 5 so that the latch mechanism 1 can be kept in the full latch state, and has a lock lever 32.
[0038]
The lock lever 32 is provided below the board portion 2A of the latch frame 2, as shown in FIG. The lock lever 32 is provided to be swingable with respect to the substrate portion 2A via a lock lever shaft 33. The lock lever 32 extends one end 32a to the right in FIG. 6A, which is a radial direction of the lock lever shaft 33, and extends the other end 32b to the opposite left in FIG. 6A. I have. An engagement hole 32c is formed in one end 32a of the lock lever 32. The other end 32 b of the lock lever 32 is provided with an elongated hole 32 d that forms an arc in the vertical direction about the lock lever shaft 33. A connecting means (not shown) such as a connecting rod connected to a key cylinder (not shown) provided outside the door (not shown) is engaged with the elongated hole 32d.
[0039]
A lock lever spring 34 is provided on one end 32 a side of the lock lever 32. The lock lever spring 34 forms a so-called torsion coil spring, and one end 34a of the lock lever spring 34 is engaged with the substrate 2A, and the other end 34b is engaged with the one end 32a of the lock lever 32. The lock lever spring 34 urges the lock lever 32 to maintain the state when the lock lever 32 swings counterclockwise as shown in FIG. 6A, and the lock lever 32 moves the lock lever 32 as shown in FIG. ), It is urged to maintain that state when it swings clockwise.
[0040]
A lock guide lever 35 is provided on the lock lever shaft 33 so as to be swingable. The lock guide lever 35 extends the arm portion 35a substantially to the left in FIG. An engagement pin 35b is formed behind the tip of the arm 35a. The engagement pin 35b is inserted and engaged with the guide groove 23f of the outside link 23 in the second latch release means 21.
[0041]
A lock guide lever spring 36 is wound around the lock lever shaft 33. The lock guide lever spring 36 has one end 36a engaged with the lock guide lever 35 side and the other end 36b engaged with the other end 32b side of the lock lever 32. Accordingly, the lock guide lever spring 36 constantly urges the lock guide lever 35 counterclockwise around the lock lever shaft 33 in FIG. A contact piece 32e is provided on the other end 32b side of the lock lever 32 to contact the arm 35a of the lock guide lever 35. The arm 35a of the lock guide lever 35 contacts the contact piece 32e of the lock lever 32 while being urged counterclockwise by the lock guide lever spring 36. Thus, the swing of the lock guide lever 35 urged counterclockwise is restricted. Therefore, the lock guide lever 35 swings together with the lock lever shaft 33 as an axis along with the swing of the lock lever 32 about the lock lever shaft 33 as the axis.
[0042]
As shown in FIG. 6A, when the door (not shown) is closed with respect to the vehicle body, the lock mechanism 32 moves the lock lever shaft 33 to the lock mechanism 31 configured as described above. When swinging counterclockwise about the axis, the opening operation of the outside handle (not shown) is in an unlocked state in which the opening operation can be transmitted to the latch mechanism 1. In this state, when the second latch release means 21 is operated as described above, as shown in FIG. 5 (b), the action pin 5b is pushed downward by the pressing portion 23d of the lowered outside link 23, and the latch mechanism 1 is pressed. Is released, and the door (not shown) can be opened with respect to the vehicle body.
[0043]
Then, as shown in FIG. 6B, the lock lever 32 is pivoted clockwise about the lock lever shaft 33 from the unlocked state shown in FIG. 6A. Then, as the lock lever 32 swings, the lock guide lever 35 also swings clockwise with the lock lever shaft 33 as the axis. As a result, the engagement pin 35b of the lock guide lever 35 moves clockwise, and the outside link 23 swings counterclockwise about the support shaft 25 as an axis. As a result, the pressing portion 23d of the outside link 23 moves so as not to be opposed to the working pin 5b of the ratchet 5, and the working pin 5b is inserted into the through groove 23c through the cutout portion 23e.
[0044]
At this time, as shown in FIG. 6 (c), when the second latch release means 21 is operated, the outside link 23 moves down. However, the pressing portion 23d does not push the working pin 5b, and the inside of the through groove 23c. Pass without contacting the working pin 5b. That is, the opening operation of the outside handle (not shown) is invalidated, the transmission to the latch mechanism 1 is disabled, the latch mechanism 1 cannot be released, and the door (not shown) locks the vehicle body. Locked state. As shown in FIG. 6A, when the lock lever 32 swings counterclockwise around the lock lever shaft 33 from the locked state shown in FIG. 6B, the state returns to the unlocked state.
[0045]
As shown in FIG. 2, a lock operation lever 37 and a lock operation lever 38 related to one end 32 a of the lock lever 32 are provided on the side plate 2 </ b> B of the latch frame 2.
[0046]
The lock operation lever 37 is provided below the side plate 2B of the latch frame 2, as shown in FIG. The lock operation lever 37 is pivotally supported so as to swing with respect to the surface of the side plate 2B. The lock operation lever 37 is related to one end 37 a that is connected to a connection means (not shown) such as a connection rod that is connected to a sill knob (not shown) provided on the indoor side of the door (not shown), and a lock operation lever 38. The other end 37b is formed to extend substantially in an L shape. Note that the lock operation lever 37 is provided with a lever piece 37d with which a free end 46b of the pressing member 46 of the inside handle lever 41 described later abuts.
[0047]
The lock operation lever 38 is provided on an electric unit 39 mounted below the side plate 2B of the latch frame 2, as shown in FIG. The lock operation lever 38 has a substantially L-shape, and has one end 38a extending upward and the other end 38b extending in the direction of the board portion 2A of the latch frame 2. One end 38a of the lock operation lever 38 is engaged with the other end 37b of the lock operation lever 37. The other end 37b of the lock operation lever 37 is provided with a substantially U-shaped engagement groove 37c, and the one end 38a of the lock operation lever 38 is provided with an engagement pin 38c. The other end 37b of the lock operation lever 37 and one end 38a of the lock operation lever 38 are engaged by inserting the engagement pin 38c into the engagement groove 37c. The other end 38b of the lock operation lever 38 is formed in a rod shape, and is inserted and engaged in an engagement hole 32c provided in one end 32a of the lock lever 32.
[0048]
In the mode shown by the solid line in FIG. 2, the lock operation lever 37 and the lock operation lever 38 are such that the door (not shown) is in a closed state with respect to the vehicle body, and the lock lever 32 is in the state shown in FIG. Thus, the lock lever 33 is in an unlocked state swinging counterclockwise about the lock lever shaft 33. In this state, when the lock operation lever 37 swings clockwise as shown by a two-dot chain line in FIG. 2, the lock operation lever 38 also swings clockwise following the lock operation lever 38. As a result, the lock lever 32 swings clockwise about the lock lever shaft 33 as shown in FIG. When the lock operation lever 37 is returned from the locked state to the state shown by the solid line in FIG. 2, the unlocked state is established. The lock operation lever 37 and the lock operation lever 38 can swing following the swing of the lock lever 32.
[0049]
Although not explicitly shown in the drawing, the electric unit 39 includes a motor and gears driven by the motor. Then, the lock operation lever 38 can be swung to the above-mentioned locked or unlocked position by driving the motor. That is, the electric unit 39 can set the locked state or the unlocked state. Further, it is possible to set the locked state by the operation from the lock operation lever 37 to the unlocked state by the electric unit 39, and to set the unlocked state by the operation from the lock operation lever 37 to the locked state by the electric unit 39, and The reverse operation is also possible.
[0050]
By the way, as shown in FIG. 2, an inside handle lever (handle lever) 41 is provided on the side plate 2 </ b> B of the latch frame 2. The inside handle lever 41 is swingably supported on the side plate portion 2B via an inside handle lever shaft 42 as a support shaft. The inside handle lever 41 has a connecting piece 43, a latch operating piece 44 and a lock operating piece 45.
[0051]
The connecting piece 43 extends substantially upward in FIG. 2 which is a radial direction of the inside handle lever shaft 42. A connecting means (not shown) such as a connecting cable connected to the inside handle (not shown) is attached to the connecting piece 43.
[0052]
The latch operating piece 44 extends substantially rearward (in the direction of the board portion 2A) in FIG. 2 which is a radial direction of the inside handle lever shaft 42. The latch operation piece 44 abuts on the engagement piece 12c of the inside open lever 12.
[0053]
The lock operating piece 45 extends substantially upward in FIG. 2, which is a radial direction of the inside handle lever shaft 42. The lock operating piece 45 is provided with a pressing member 46. The pressing member 46 swingably supports a base end 46 a with respect to the lock operating piece 45 via a support shaft 47 parallel to the inside handle lever shaft 42. A pressing member spring 48 is wound around the support shaft 47. The pressing member spring 48 has one end 48a engaged with the lock operating piece 45 side and the other end 48b engaged with the pressing member 46 side. The pressing member 46 is always urged in a direction in which the free end 46b is separated from the inside handle lever shaft 42 (counterclockwise direction in FIG. 2). Further, the lock operation piece 45 is provided with a restriction piece 45 a that comes into contact with the pressing member 46. Thus, the swing of the pressing member 46 urged by the elastic force of the pressing member spring 48 is restricted at the position where the pressing member 46 abuts on the restricting piece 45a. The position where the swinging of the pressing member 46 is restricted is a position where the free end 46b exists on the locus of a circle passing through the support shaft 47 around the inside handle lever shaft 42 in the embodiment shown in FIG. The free end 46b is a position extending substantially downward in FIG. 2, and the free end 46b is a position where the free end 46b can face the lever piece 37d of the lock operation lever 37 described above.
[0054]
In the inside handle lever 41 thus configured, the door (not shown) is in a closed state with respect to the vehicle body, and the lock operation lever 37 and the lock operation lever 38 are indicated by solid lines as shown in FIG. In the unlocked state, the latch mechanism 1 is released by the swing. Specifically, when the inside handle lever 41 swings clockwise about the inside handle lever shaft 42, the latch operating piece 44 pushes the engaging piece 12c of the inside open lever 12 upward. As a result, as shown in FIG. 4B, the inside open lever 12 swings counterclockwise around the latch shaft 6 so that the lowering of the inside link 13 causes the latch mechanism 1 to be fully latched (half latch state). (Latch state). As a result, the door (not shown) can be opened with respect to the vehicle body.
[0055]
Hereinafter, the operations related to the one-motion opening function and the keyless locking function in the door latch device having the above-described configuration will be described. FIGS. 7A to 7C are operation diagrams showing a one-motion opening function, FIGS. 8A to 8C are operation diagrams showing a keyless lock function using an outside handle, and FIGS. 9A to 9C. () Is an operation diagram showing a keyless lock function by the inside handle.
[0056]
First, when the door (not shown) is in a closed state with respect to the vehicle body and the lock mechanism 31 is in a locked state, the one-motion open door function locks by opening the inside handle (not shown). This is a function of opening the door by releasing the latch mechanism 1 while unlocking the mechanism 31.
[0057]
FIG. 7A shows a state in which the door (not shown) is closed with respect to the vehicle body, and when the lock mechanism 31 is in the locked state, the lock operation lever 37 and the lock operation lever 38 and the inside handle lever 41 are shown. Shows the state. In this state, the lock operation lever 37 is in the lock position, and the lever piece 37d of the lock operation lever 37 and the free end 46b of the pressing member 46 of the inside handle lever 41 are in a mutually facing relationship.
[0058]
When the inside handle (not shown) is opened, the inside handle lever 41 swings clockwise about the inside handle lever shaft 42 as shown in FIG. 7B. As a result, the latch operating piece 44 pushes the engaging piece 12c of the inside open lever 12 upward, and the free end 46b of the pressing member 46 of the lock operating piece 45 abuts and engages with the lever piece 37d of the lock operating lever 37. .
[0059]
Further, when the inside handle (not shown) is opened, the inside handle lever 41 further swings clockwise about the inside handle lever shaft 42 as shown in FIG. 7C. As a result, the latch operating piece 44 further pushes the engaging piece 12c of the inside open lever 12 upward to release the latch mechanism 1 so that the door (not shown) can be opened with respect to the vehicle body. become. Further, the free end 46b of the pressing member 46 of the lock operation piece 45 presses the lever piece 37d of the lock operation lever 37 to swing the lock operation lever 37 clockwise, so that the lock operation lever 37 is in the unlock position. To bring the lock mechanism 31 into the unlocked state. Since the free end 46b of the pressing member 46 exists on the locus of a circle passing through the support shaft 47 about the inside handle lever shaft 42, the lever piece 37d of the lock operation lever 37 is moved without the pressing member 46 swinging. Pressing operation can be performed. As a result, the silno portion (not shown) to which the lock operation lever 37 is connected is in an unlocked state. In this way, the one-motion open door function operates.
[0060]
When the lock mechanism 31 is unlocked, the lock lever 32 swings counterclockwise as shown in FIG. At this time, the action is not transmitted to the key cylinder (not shown) connected to the long hole 32d by the long hole 32d of the other end 32b of the lock lever 32, and there is no influence on the key cylinder (not shown) side.
[0061]
Next, when the door (not shown) is in an open state with respect to the vehicle body and the sill knob (not shown) is used to lock the door, the outside handle (not shown) is provided. ) Or the inside handle (not shown) must be opened to operate the sill knob (not shown) so that the sill knob (not shown) is consciously operated.
[0062]
FIG. 8A shows a state in which the door (not shown) is opened with respect to the vehicle body, and the state of the second latch release means 21 and the lock lever 32 when the lock mechanism 31 is in the unlocked state. Show. In this state, the action pin 5b of the ratchet 5 is opposed to the pressing portion 23d with respect to the outside link 23, and is located outside the through groove 23c and below the notch 23e. Then, in this state, a sill knob (not shown) is operated to swing the lock lever 32 clockwise in order to lock the lock mechanism 31. Then, since the action pin 5b abuts on the outer wall of the outside link 23 that swings clockwise, the lock lever 32 cannot swing clockwise, and eventually the sill knob (not shown). ) Cannot be operated, and the lock mechanism 31 cannot be locked.
[0063]
Then, as shown in FIG. 8B, the outside handle (not shown) is opened to swing the outside open lever 22 counterclockwise. Then, since the pressing portion 23d of the outside link 23 presses the operating pin 5b of the ratchet 5, the operating pin 5b is positioned on the side of the cutout portion 23e while abutting on the pressing portion 23d.
[0064]
At this time, as shown in FIG. 8C, the sill knob (not shown) is operated to swing the lock lever 32 clockwise so as to lock the lock mechanism 31. Then, the action pin 5b is passed through the notch 23e of the outside link 23 that swings clockwise, and is put into the through groove 23c. As a result, the sill knob (not shown) can be operated, and the lock mechanism 31 can be brought into the locked state. Thereafter, when the door (not shown) is closed with respect to the vehicle body, the latch mechanism 1 holds the closed door, and the lock mechanism 31 is locked. In this way, the keyless lock function is activated by opening the outside handle (not shown).
[0065]
On the other hand, FIG. 9A shows a state in which a door (not shown) is opened with respect to the vehicle body, and when the lock mechanism 31 is in an unlocked state, the lock operation lever 37 and the lock operation lever 38 and the inside The state with the handle lever 41 is shown. In this state, the lock operation lever 37 is in the unlocked position, and the lever piece 37d of the lock operation lever 37 and the free end 46b of the pressing member 46 of the inside handle lever 41 are in a relationship separated from each other. At this time, as shown in FIG. 8A, as described above, the action pin 5 b of the ratchet 5 interferes with the action pin 5 b abutting on the outer wall of the outside link 23, so that the lock lever 32 is turned clockwise. The lock mechanism 31 cannot be rocked, the sill knob (not shown) cannot be operated, and the lock mechanism 31 cannot be locked.
[0066]
Then, the inside handle (not shown) is opened to swing the inside handle lever 41 counterclockwise. Then, as shown in FIG. 7C, the pressing member 46 passes in front of the lever piece 37d without being in contact with the lever piece 37d of the lock operation lever 37. At this time, the inside handle lever 41 swings the inside open lever 12 counterclockwise with the latch operating piece 44 as shown in FIG. 4B. As described above, the inside open lever 12 swings the outside open lever 22 together. For this reason, as shown in FIG. 8B, the pressing portion 23d of the outside link 23 presses the working pin 5b of the ratchet 5, so that the working pin 5b is in contact with the pressing portion 23d and the side of the notch 23e. Located in the department.
[0067]
At this time, as shown in FIG. 9B, a sill knob (not shown) is operated to swing the lock operation lever 37 clockwise to lock the lock mechanism 31. Then, the lever piece 37d of the lock operation lever 37 is in the middle of the pressing member 46 of the inside handle lever 41 and abuts and engages with the outside of the locus of a circle passing through the support shaft 47 with the inside handle lever shaft 42 as the center. I do.
[0068]
Further, as shown in FIG. 9C, a sill knob (not shown) is operated to lock the lock mechanism 31 in a locked state, and the lock operation lever 37 is pivoted clockwise to the lock position. Then, the lever piece 37d of the lock operation lever 37 presses the pressing member 46 of the inside handle lever 41. Accordingly, the pressing member 46 swings clockwise about the support shaft 47 while resisting the elastic force of the pressing member spring 48 so as to allow the locking operation lever 37 to swing. Then, the pressing member 46 is bent inward in the direction in which the free end 46b approaches the inside handle lever shaft 42, and retreats to swing. At the same time, as described above, the lock lever 32 swings clockwise, and the working pin 5b is passed through the cutout portion 23e of the outside link 23 that swings clockwise together, and is inserted into the through groove 23c. As a result, the sill knob (not shown) can be operated, and the lock mechanism 31 can be brought into the locked state. Thereafter, when the door (not shown) is closed with respect to the vehicle body, the latch mechanism 1 holds the closed door, and the lock mechanism 31 is locked. Thus, the keyless lock function is activated by the opening operation of the inside handle (not shown).
[0069]
The opening operation of the inside handle (not shown) causes the inside open lever 12 to swing through the inside handle lever 41, and the outside open lever 22 also swings. At this time, the action is not transmitted to the outside handle (not shown) connected to the long hole 22b by the long hole 22b of the outside open lever 22, and there is no influence on the outside handle (not shown) side.
[0070]
Therefore, the above-described door latch device has both a one-motion opening function and a keyless locking function including an opening operation of an outside handle (not shown) or an inside handle (not shown). The opening operation of the inside handle (not shown) causes the lock mechanism 31 to be in the unlocked state on the one hand, and on the other hand, the inside handle (not shown) side and the lock mechanism so that the lock mechanism 31 is in the locked state on the other hand. The interference of the action with the 31 side is prevented. As a configuration for preventing this interference, a pressing member 46 is provided on the inside handle lever 41, and the pressing member 46 presses the lock operation lever 37 when the lock mechanism 31 is unlocked. When the lock state is established, the lock operation lever 37 is pressed to retreat from the swing. In other words, the pressing member 46 does not swing and retreat by a resistance different from that of the lock operation lever 37. Therefore, since the inside handle lever 41 has no resistance that hinders transmission of the opening operation of the inside handle (not shown), the inside handle (not shown) is used regardless of the one-motion opening function and the keyless lock function. Can be transmitted lightly.
[0071]
When the lock mechanism 31 is in the locked state, the pressing member 46 is bent inward so that the free end 46b is pushed toward the inside handle lever shaft 42 by the lock operation lever 37 and retracts. It is an aspect which becomes. That is, the pressing member 46 is swung so as to be folded inside the door latch device inside the swinging track of the inside handle lever 41 and detaches from the lock operation lever 37. Therefore, it is possible to reduce the size of the door latch device without preparing an area on the outer periphery of the door latch device in which the pressing member 46 is allowed to swing.
[0072]
Further, in connection with the opening operation of the inside handle (not shown) by the one-motion opening function, the inside handle lever 41 is used to release the latch mechanism 1 without passing through the inside open lever 12 and the inside link 13. The swing of the lock lever 32 is enabled. The inside handle lever 41 transmits the opening operation of the inside handle (not shown) to one end 32 a of the lock lever 32. Thus, the opening operation of the inside handle (not shown) can be transmitted lightly.
[0073]
【The invention's effect】
As described above, according to the door latch device of the present invention, the pressing member is locked by the swing operation of the handle lever accompanying the opening operation of the inside handle that releases the engagement of the latch mechanism so as to open the door. Is displaced from the locked position to the unlocked position to perform the one-motion opening door function. Further, when the lock operation lever is operated toward the lock position in a state where the inside handle is opened and the lock operation lever and the pressing member are engaged, the pressing member is swung to allow the movement and the keyless operation. A lock function is performed. As described above, the present invention does not have a configuration in which the pressing member itself swings and retracts by a resistance different from that of the lock operation lever, and the handle lever does not have resistance that hinders transmission of the opening operation of the inside handle. Therefore, the opening operation of the inside handle can be transmitted lightly.
[0074]
Further, the swinging direction in which the pressing member is pushed by the lock operation lever from the unlocked position to the locked position and retracts to swing is the direction approaching the support shaft. That is, the pressing member swings so as to be folded inside the swinging track of the handle lever. For this reason, it is possible to reduce the size of the door latch device without preparing an area on the outer periphery of the door latch device where the pressing member is allowed to swing.
[Brief description of the drawings]
FIG. 1 is a front view showing a door latch device according to an embodiment of the present invention.
FIG. 2 is a left side view showing the door latch device.
FIGS. 3A to 3C are conceptual diagrams showing the operation of a latch mechanism.
FIGS. 4A and 4B are front views showing first latch release means.
FIGS. 5A and 5B are front views showing second latch release means.
FIGS. 6A to 6C are front views showing a lock mechanism.
FIGS. 7A to 7C are operation diagrams showing a one-motion opening door function.
FIGS. 8A to 8C are operation diagrams showing a keyless lock function using an outside handle.
FIGS. 9A to 9C are operation diagrams showing a keyless lock function by the inside handle.
FIGS. 10A to 10C are operation diagrams showing a one-motion opening function and a keyless locking function of the inside handle of the conventional door latch device.
FIGS. 11A to 11C are operation diagrams showing a one-motion opening function and a keyless locking function of an inside handle of another conventional door latch device.
[Explanation of symbols]
1 Latch mechanism
2 Latch frame
2A board part
2B side plate
2Aa play hole
3 Latch body
3a Horizontal notch
3b Arc-shaped hole
3c contact part
3d locking projection
4 Latch
4a engagement groove
4b Hook
4c First locking part
4d Second locking part
5 Ratchet
5a Engagement part
5b Working pin
6 Latch axis
7 Ratchet shaft
11 First latch release means
12 Inside open lever
12a One end
12b The other end
12c engagement piece
12d contact piece
13 Inside link
13a upper end
13b lower end
13c long hole
14 spindle
21 Second latch release means
22 Outside open lever
22a arm
22b long hole
23 Outside link
23a upper end
23b lower end
23c through groove
23d pressing part
23e notch
23f guide groove
24 Open lever spring
24a one end
24b The other end
25 spindle
31 Lock mechanism
32 Lock lever
32a one end
32b other end
32c engagement hole
32d long hole
32e contact piece
33 Lock lever shaft
34 Lock lever spring
34a one end
34b other end
35 Lock guide lever
35a arm
35b engagement pin
36 Lock guide lever spring
36a one end
36b other end
37 Lock operation lever
37a one end
37b The other end
37c engagement groove
37d lever piece
38 Lock operating lever
38a one end
38b other end
38c engagement pin
39 Electric unit
41 Inside handle lever (handle lever)
42 Inside handle lever shaft (support shaft)
43 Connecting piece
44 Latch operating piece
45 Lock actuating piece
45a regulation piece
46 Pressing member
46a proximal end
46b Free end
47 Spindle
48 Pressing member spring
48a one end
48b other end
S striker

Claims (2)

When the inside handle is opened, the handle lever is swung so as to engage with the lock operation lever to displace the lock operation lever from the lock position to the unlock position, and latch the open operation of the inside handle. In a door latch device that transmits to a mechanism to release engagement between a latch and a ratchet,
The handle lever is provided with a pressing member that is swingable on a swing shaft of the handle lever, and the lock operating lever is engaged by engaging the pressing member with the lock operating lever when the inside handle is opened. When the lock operation lever is operated toward the lock position in a state where the inside handle is opened and the lock operation lever and the pressing member are engaged while displacing the inside handle from the lock position to the unlock position. A door latch device wherein the pressing member is swung to allow the movement. The door latch device according to claim 1, wherein the pressing member is swingable in a direction approaching a swing axis of the handle lever.

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