JP4507196B2 - Steering lock device - Google Patents

Description

  The present invention relates to a steering lock device used in a vehicle such as an automobile.

In the conventional steering lock device, in order to prevent the steering from being locked when the key is pulled out while the vehicle is running due to an incorrect operation, the key cylinder is rotated during the return rotation to the lock position. There is a steering lock mechanism that can be turned back to the lock position by performing another operation to cancel this prevention, that is, a so-called two-motion mechanism (for example, a patent) Reference 1). In this two-motion mechanism, when the key cylinder is rotated from the lock position to the ACC position, the on position, and the start position, the engine can be started without any trouble, but when the key is pulled out, the ACC position is changed from the on position. When the key cylinder is returned and rotated, the return rotation of the key cylinder is prevented at the ACC position. Therefore, the key cylinder is pushed in at the ACC position to perform the operation of moving the key cylinder backward, and the key cylinder can be returned from the ACC position to the lock position and rotated in this pushed state.
Japanese Utility Model Publication No. 63-192166

  However, depending on the vehicle type or grade of the vehicle, some of the two-motion type safety devices are unnecessary, and it is necessary to design and manufacture a steering lock device for each specification.

  For example, when an attempt is made to construct a steering lock device without a two-motion mechanism using the components of the steering lock device disclosed in Patent Document 1, the cylinder has at least a body that allows the cylinder to move backward. It is necessary to change the design so that it cannot move backward. For that purpose, a dedicated mold for manufacturing the body is separately required, which is costly. Also, in terms of parts management, the management cost is high.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a steering lock device capable of easily switching between two types of steering lock devices with and without a two-motion mechanism. To do.

  In order to achieve the above object, the present invention provides a cylinder that is pivotably held in a cylinder outer and is movable in an axial direction and allowed to rotate by inserting a key, and is connected to the cylinder together. A steering device including a cam member that rotates and moves a lock shaft that engages with a steering shaft of a vehicle, and a body that houses the cylinder and the cam member. Provided is a cam lid having an allowance portion that allows movement and a blocking portion that is formed on the other surface side and prevents movement of the cylinder to the rear side, and the cam lid switches the surface facing the cylinder to switch the body It can be attached to.

  According to such a configuration, switching of the steering lock device with and without the two-motion mechanism can be performed only by changing at least the mounting direction of the cam lid. Thereby, it is not necessary to separately design and manufacture a member such as a body that restricts movement of the cylinder to the rear side, and as a result, manufacturing and component management costs can be reduced.

  In addition, a protruding portion protruding rearward may be provided at the rear end of the cylinder, and the allowable portion of the cam lid may be an allowable concave portion that receives the protruding portion.

  According to such a configuration, it is possible to configure a steering lock device that has a simple structure and can easily be switched between the presence and absence of the two-motion mechanism.

  As is apparent from the above description, according to the steering lock device of the present invention, switching of the steering lock device with and without the 2-motion mechanism can be performed only by changing at least the mounting direction of the cam lid. Thereby, it is not necessary to separately design and manufacture a member such as a body that restricts movement of the cylinder to the rear side, and as a result, manufacturing and component management costs can be reduced.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a side sectional view of a steering lock device of the present invention. In FIG. 1 (the same applies to FIGS. 3, 5, and 6), the right side is referred to as “front” and the left side is referred to as “rear”.

  As shown in FIG. 1, the steering lock device of this embodiment includes a substantially cylindrical body 10 having an internal space made of metal such as zinc. On the inner peripheral surface of the body 10, a step portion 11 for locking a cam lid 31 described later is provided. Further, a pin hole 12 through which the pin 36 penetrates is provided on the side surface of the body 10 in the vicinity of the step portion 11. Furthermore, a holding projection 13 that protrudes forward and supports a cam member 40 described later is provided inside the body 10, and a shaft portion 62 of a rotor 60 described later is provided on the upper side surface of the holding projection 13. A holding hole 14 to be inserted is provided. A substantially cylindrical cylinder outer 18 is accommodated and fixed at the front end of the body 10. A cylindrical cylinder 20 is held inside the cylinder outer 18 so as to be rotatable and movable back and forth, and the cylinder 20 and the cylinder outer 18 constitute a known cylinder lock.

  The cylinder 20 has a key hole (not shown) into which the key 2 is inserted at the axial center thereof. When the key 2 is inserted into the key hole, a tumbler (not shown) is inserted into the cylinder 20 so that the cylinder 20 It can be rotated in the cylinder outer 18. After that, the cylinder 20 can be rotated to the lock position, the ACC position, the on position, and the start position by rotating the key 2 clockwise. On the rear side of the cylinder 20, as shown in FIG. 3 (b), a flange portion 21 formed in a hook shape is provided. A locking portion 22 projects from the flange portion 21 toward the front side, and is formed at a position where it can be engaged with a tip of a stopper member 28 described later. An inclined surface 22a is formed on one end surface of the locking portion 22, and a locking surface 22b is formed on the other end surface. Further, the rear end surface of the flange portion 21 is provided with a protruding portion 24 that protrudes toward the rear side. Further, as shown in FIG. 1, a key sensing member 25 that rotates by inserting the key 2 into the key hole is rotatably disposed inside the cylinder 20.

  A stopper member 28 housed in a groove 18a along the axial direction is housed in one side portion of the cylinder outer 18 so as to be movable in the front-rear direction. This stopper member 28 is urged toward the flange 21 side of the cylinder 20 by a spring 29, and in the locked state of FIG. Therefore, it is in a position where it can engage with the locking portion 22 of the cylinder 20.

  Behind the cylinder 20, a cam lid 31 having an allowable recess 34 that is an allowable portion that allows the rearward movement of the cylinder 20 when the protruding portion 24 of the cylinder 20 enters. As shown in FIGS. 1 and 2, the cam lid 31 has a substantially disk shape, and a notch 32 is formed so as not to be buffered with a driven member 48 described later in the assembled state. An insertion hole 33 through which the rear end portion of the cylinder 20 passes is provided at the center of the cam lid 31. Further, on one surface of the cam lid 31, there is formed an allowable recess 34 that is provided in a predetermined range along the outer periphery of the insertion hole 33 and into which the protruding portion 24 of the cylinder 20 can enter, and both ends thereof are The tip of the projecting portion 24 slides to form an inclined surface 34a that guides the cylinder 20 to the front position (position shown in FIG. 1). On the other hand, a blocking portion 35 formed in a plane is provided on the other surface side of the cam lid 31. Further, a pin hole 37 into which the pin 36 is inserted is formed on the outer peripheral surface of the cam lid 31.

  The cam lid 31 is formed in a left and right shape with the axis of the pin hole 37 as a rotation axis, and can be mounted on the body 10 by switching the surface facing the cylinder 20. The cam lid 31 is mounted on the step portion 11 of the body 10. Are fixed to the body 10 by inserting the pin 36 into the pin holes 12 and 37. For example, when configuring a steering lock device with a two-motion mechanism, as shown in FIG. 1, the one surface side with the allowable recess 34 of the cam lid 31 is fixed toward the side facing the rear end of the cylinder 20. As a result, the cylinder 20 can be moved rearward, and a two-motion mechanism can be configured. On the other hand, when configuring a steering lock device without a two-motion mechanism, the other side of the cam lid 31 with the blocking portion 35 is fixed toward the side opposite to the rear end of the cylinder 20, thereby When the shape portion 24 abuts on the plane which is the blocking portion 35, the movement of the cylinder 20 to the rear side is blocked, and the cylinder 20 can be rotated only at the front position shown in FIG. This makes it possible to configure a steering lock device without a two-motion mechanism that does not require a pressing operation of the cylinder 20.

  Note that the cam lid 31 does not necessarily have a symmetrical shape with respect to the rotation axis, and the shape of the cam lid 31 and the body 10 is selected so that the direction of the surface of the cam lid 31 can be changed and the cam lid 31 can be attached to the body 10. do it.

  Referring again to FIG. 1, a substantially cylindrical cam member 40 that is pivotally supported by the tip of the holding projection 13 of the body 10 and is rotatably disposed in the body 10 is provided behind the cam lid 31. ing. The cam member 40 is connected to the rear end portion of the cylinder 20 and rotates together with the cylinder 20 on the same axis. A cam spring 41 is provided between the cam member 40 and the cylinder 20 to urge the cylinder 20 forward. Further, a cam portion 42 is formed on the outer periphery of the cam member 40 to engage with a cam receiving portion 49 of a driven member 48 connected to a lock shaft 45 described later to draw the lock shaft 45 into the body 10. . A gear portion 43 that meshes with a gear portion 61 of a rotor 60 that rotates a rotary switch 66, which will be described later, is formed on the outer peripheral edge of the cam member 40 on the rear side.

  Behind the cam member 40, a lock shaft 45 that engages with a recess of a steering shaft (not shown) to prevent the steering shaft from rotating is located in the body 10 between the locked position and the unlocked position in the axial direction of the cylinder 20. Is slidably movable in a direction parallel to. A driven recess 48 that slides together with the lock shaft 45 is engaged with and connected to the connection recess 46 provided on the side surface of the lock shaft 45. The driven member 48 includes a cam receiving portion 49 that engages with the cam portion 42 of the cam member 40, a hook-like portion 50 that protrudes forward and has a hook-like shape, and a spring holding portion that holds a spring. 51 is provided. The driven member 48 is urged rearward (steering shaft side) by a spring 52 provided between the spring holding portion 51 and the rear end of the cylinder outer 18, and a lock shaft 45 coupled to the driven member 48. Is also biased toward the steering shaft. As a result, the lock shaft 45 in the lock position shown in FIG. 1 protrudes from the body 10 and engages with a recess of the steering shaft (not shown), thereby preventing the steering shaft from rotating and locking the steering. It is in a state.

  On the other side of the cylinder outer 18, a lock link 55 is accommodated in a groove 18 b along the axial direction, and supported by a support shaft 56 that can move in the radial direction so as to be swingable. The lock link 55 has a key sensing end 55 a at one end in contact with the key sensing member 25 of the cylinder 20, and a locking end 55 b at the other end engageable with the hook-shaped portion 50 of the driven member 48. When the key 2 is inserted into the cylinder 20, the key sensing end 55 a is pushed against the spring 57, and the cylinder 20 and the cam member 40 rotate as the key 2 rotates, and the cam portion of the cam member 40 is rotated. 42 moves the driven member 48 forward while pressing the cam receiving portion 49 of the driven member 48, and the lock shaft 45 moves together with the driven member 48 and is pulled into the body 10, thereby locking the steering. Canceled. Further, as shown in FIG. 5, the unlocked state of the steering wheel is maintained by engaging the locking end 55 b with the hook-shaped portion 50 of the driven member 48.

  On the other hand, in FIG. 1, the rotor 60 having a gear portion 61 that meshes with the gear portion 43 of the cam member 40 is approximately orthogonal to the axial direction of the cylinder 20 in the holding hole 14 of the body 10 above the lock shaft 45. The direction of rotation is accommodated and pivotally supported in the body 10 with the rotation axis as a rotation axis. Further, a rotary switch 66 is fitted into the body 10 and fixed on the upper side of the rotor 60 with a spacer 64 interposed therebetween. A rotor (not shown) is provided inside the rotary switch 66, and the upper end portion of the shaft portion 62 of the rotor 60 is connected to the rotor of the rotary switch 66. Accordingly, the cylinder 20 and the cam member 40 are rotated by the rotation operation of the key 2, and the rotor 60 is also rotated together by the meshing of the gear portions 43 and 61, so that the shaft portion 62 rotates the rotor of the rotary switch 66. Rotating and opening / closing operation of a predetermined switch such as engine start is performed.

  The present embodiment is configured as described above. Next, as shown in FIG. 1, the operation of the steering lock device with a two-motion mechanism in which the allowable recess 34 of the cam lid 31 is mounted toward the cylinder 20 is shown in FIGS. 4 will be described. 3 is a diagram showing the positional relationship between the locking portion 22 of the cylinder 20 and the stopper member 28 at each rotation position of the cylinder 20, and FIG. 4 is a diagram of the projecting portion 24 of the cylinder 20 at each rotation position of the cylinder 20. FIG. 6 is a diagram showing a positional relationship between the cam lid 31 and an allowable recess 34. FIG. 3A shows a locked position in which the steering shaft is locked by inserting and removing the key and removing the key. In this state, when the key 2 is inserted and rotated in the ON position direction, that is, clockwise as viewed from the insertion side, the inclined surface 22a of the locking portion 22 pushes the tip of the stopper member 28 as shown in FIG. 3 is moved to the right in the figure, the cylinder 20 can be rotated regardless of the stopper member 28, and when the stopper member 28 gets over the locking portion 22, it returns to its original position by the urging force of the spring 29, and FIG. ) State. This is, for example, the ACC position, and thereafter, the cylinder 20 can be turned to the ON position (and the starter position) without any trouble, and the engine can be started or the vehicle can be operated.

  On the other hand, when the cylinder 20 is rotated back from the ON position toward the lock position, the locking surface 22b of the locking portion 22 is engaged with the stopper member 28 as shown in FIG. The above return rotation is prevented. This position is a return rotation prevention position (ACC position), and in this state, as shown in FIG. 4, the positions of the projecting portion 24 of the cylinder 20 and the allowable recess 34 of the cam lid 31 are the same. 20 can be moved rearward. Here, when the key 2 is pushed in and the cylinder 20 is moved to the left in the drawing, that is, the rear side, the locking portion 22 also moves, and the stopper member 28 is in the storage space and cannot move. The state shown in FIG. 3D is released. Thereafter, when the key 2 is pushed and rotated in the lock position direction, the tip of the projecting portion 24 of the cylinder 20 slides on the inclined surface 34a of the cam lid 31 in the middle, so that the cylinder 20 is guided forward. Then, the cylinder 20 can be rotated back to the locked position shown in FIG. That is, in order to rotate back from the on position direction to the lock position, in addition to the rotation operation in the return direction, a second operation for pressing the key 2 is required, and a two-motion safety function is exhibited.

  Next, as shown in FIG. 6, the operation of the steering lock device without the two-motion mechanism in which the blocking portion 35 of the cam lid 31 is mounted toward the cylinder 20 and the stopper member 28 and the spring 29 are eliminated will be described. .

  In this steering lock device, since there is no stopper member 28 that prevents the rotation of the cylinder 20, after the key 2 is inserted, the cylinder 20 can be rotated from the lock position to the ACC position, the on position, and the start position, The return rotation from the position to the lock position can also be performed by rotating the cylinder 20 in the forward position. The rearward movement of the cylinder 20 is prevented by the tip of the protruding portion 24 of the cylinder 20 coming into contact with the blocking portion 35 of the cam lid 31, and the cylinder 20 is held at the front position at all predetermined rotational positions. Thus, the cylinder 20 does not move rearward unnecessarily.

  As is apparent from the above description, according to the steering lock device of the present embodiment, switching of the steering lock device with and without the two-motion mechanism can be performed only by changing the assembly direction of the cam lid 31 at least. it can. Thereby, it is not necessary to separately design and manufacture a member such as the body 10 that restricts the movement of the cylinder 20 to the rear side, and manufacturing and component management costs can be reduced. In addition, the steering lock device with and without the two-motion mechanism can be configured by using all the same parts except unnecessary parts, and in this case, the manufacturing and parts management costs can be further reduced.

It is side surface sectional drawing of the steering lock apparatus with a 2 motion mechanism which concerns on embodiment of this invention. (A) is a top view which shows the cam lid of FIG. 1, (b) is a bottom view of (a). It is operation | movement explanatory drawing of the cylinder and stopper member of FIG. It is operation | movement explanatory drawing of the protrusion part of the cylinder of FIG. It is side surface sectional drawing which shows the locked state of FIG. It is side surface sectional drawing of the steering lock apparatus without 2 motion mechanism which concerns on embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 18 ... Cylinder outer, 2 ... Key, 20 ... Cylinder, 45 ... Lock shaft, 40 ... Cam member, 10 ... Body, 34 ... Allowable recessed part (allowable part), 35 ... Blocking part, 31 ... Cam lid

Claims (2)

  A cylinder that is rotatable in the cylinder outer and is held so as to be movable in the axial direction and is allowed to rotate by inserting a key, and is connected to the cylinder and rotates together to engage with the steering shaft of the vehicle. In a steering apparatus including a cam member that moves a lock shaft, and a body that houses the cylinder and the cam member, an allowance portion that is formed on one surface side and allows movement of the cylinder to the rear side, and on the other surface side A steering lock provided with a blocking portion that is formed and has a blocking portion that prevents movement of the cylinder toward the rear side, and the cam lid can be mounted on the body by switching a surface facing the cylinder. apparatus.   2. The steering lock device according to claim 1, wherein a protruding portion that protrudes rearward is provided at a rear end of the cylinder, and an allowable portion of the cam lid is an allowable concave portion that receives the protruding portion.

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