TW202415564A - Steering lock - Google Patents

Abstract

The present invention provides a steering lock device that can use a solenoid to move a lock rod to increase the response speed of the lock rod and ensure the required movement distance of the lock rod. The steering lock device locks the vehicle's steering by locking the lock rod R in a forward protruding state, and releases the steering lock by releasing the locking of the steering by retracting the lock rod R backward. The steering lock device includes a solenoid S having a plunger P that can be displaced by energizing; a connecting rod element 5 that can transmit the displacement action of the solenoid S to the lock rod R; and a switching element 6 that is installed between the connecting rod element 5 and the lock rod R and switches the lock rod R to a protruding state or a retracted state each time the plunger P has a displacement action.

Description

Steering lock

The present invention relates to a steering lock device for executing steering lock and releasing thereof.

In motorcycles, etc., a steering lock device is usually provided to lock the steering (rotating shaft of the handlebar, etc.) by locking the lock rod to prevent the vehicle from being stolen. For this purpose, the applicant has proposed a steering lock device disclosed in, for example, Patent Document 1, which can control the extension and retraction of the lock rod by driving a motor. ＜Prior Technical Document＞ ＜Patent Document＞

＜Patent Document 1＞ JP 2017-81347 A

Problems to be solved by the invention In the above-mentioned conventional steering lock device, although a motor is used as the driving source of the lock rod, the applicant considers using a solenoid instead of a motor in order to improve the response speed of the lock rod. However, the displacement of the plunger in the solenoid is limited, and there may be a situation where the required movement distance (stroke) of the lock rod cannot be ensured. In addition, in order to keep the lock rod in a protruding state or a retracted state, it is necessary to use a self-holding solenoid, which may increase the manufacturing cost.

The present invention is aimed at the above situation, and aims to provide a steering lock device, so that a solenoid can be used to move the lock rod to improve the response speed of the lock rod and ensure the required moving distance of the lock rod.

Technical means for solving the problem The invention described in claim 1 provides a steering lock device, which has a lock rod mounted on a housing element, and the steering of the vehicle is locked by the forward protruding state of the lock rod, and the steering lock is released by the backward retracting state of the lock rod, which includes: a solenoid having a plunger that can be displaced by energizing the coil; a transmission element that can transmit the displacement action of the solenoid to the lock rod; and a switching element installed between the transmission element and the lock rod, and switches the lock rod to a protruding state or a retracted state each time the plunger has a displacement action.

The invention described in claim 2 is that in the steering lock device described in claim 1, the switching element has a rotor, which rotates a predetermined angle each time the transmission element transmits the displacement action of the plunger, and switches alternately between a first locking position in which the locking rod is locked in a protruding state and a second locking position in which the locking rod is locked in a retracted state.

The invention described in claim 3 is that in the steering lock device described in claim 1, the transmission element is composed of an elongated connecting rod element having one end and the other end.

The invention described in claim 4 is that in the steering lock device described in claim 3, the connecting rod element can rotate freely around the one end, while the other end is connected to the switching element, and the plunger is connected between the one end and the other end.

The invention described in claim 5 is that in the steering lock device described in claim 3, one end of the connecting rod element is connected to the plunger, and the other end is connected to the switching element, and can rotate freely around a predetermined position between the one end and the other end.

Effect of the invention According to the invention of claim 1, since there is a solenoid having a plunger that can be displaced by energizing a coil, a transmission element that can transmit the displacement action of the solenoid to the lock rod, and a switching element installed between the transmission element and the lock rod, which switches the lock rod to a protruding state or a retracted state each time the plunger has a displacement action, the lock rod can be moved using the solenoid to improve the response speed of the lock rod and ensure the required movement distance of the lock rod.

According to the invention of claim 2, since the switching element has a rotor, it rotates a predetermined angle each time the transmission element transmits the displacement action of the plunger, and switches alternately between a first locking position for locking the locking rod in a protruding state and a second locking position for locking the locking rod in a retracted state, so the locking rod can be kept in a protruding state or a retracted state with a simple structure.

According to the invention of claim 3, since the transmission element is composed of a long connecting rod element having one end and the other end, the required moving distance of the locking rod can be easily ensured.

According to the invention of claim 4, since the connecting rod element can rotate freely around one end, and the other end is connected to the switching element, and the plunger is connected between one end and the other end, the connecting rod element can rotate around one end and transmit the displacement action of the plunger to the switching element.

According to the invention of claim 5, since one end of the connecting rod element is connected to the plunger and the other end is connected to the switching element, and can rotate freely around a predetermined position between one end and the other end, the connecting rod element can transmit the displacement action of the plunger to the switching element while rotating around a predetermined position between one end and the other end.

The following will specifically describe an embodiment of the present invention with reference to the accompanying drawings. The steering lock device of the present embodiment is mounted on a vehicle such as a motorcycle and is used to perform steering lock and release. It has a lock rod R mounted on a housing element 2, and as shown in FIG1, the steering of the vehicle is locked by the forward protruding state of the lock rod R to perform steering lock, and as shown in FIG3, the steering lock can be released by releasing the locking of the steering by the backward retracting state of the lock rod R.

Specifically, the steering lock device 1 of the present embodiment is as shown in FIGS. 1 to 11, and is composed of a solenoid S having a plunger P that can be displaced by energizing, a housing component 2 composed of a box-shaped molded product, a cover component 3 covering the opening of the housing component 2, a connecting rod component 5 as a transmission component, a lock rod R, a housing 7, a switching component 6 composed of a pushing portion 8 and a rotor 9, and a contact point housing component 10.

The solenoid S is an actuator that is mounted at a predetermined position of the housing member 2 and can displace the plunger P by energizing a coil (not shown) disposed inside the solenoid, and is configured to generate magnetism by energizing a coil (not shown) disposed inside the solenoid, and displace the plunger P by its magnetic force. That is, the solenoid S does not include a holding member such as a permanent magnet, unlike a self-holding solenoid, and therefore the plunger P is displaced only according to the energizing time of the internal coil.

Specifically, when the internal coil of the solenoid S of this embodiment is not energized, the plunger P is maintained in a protruding state by the biasing force of the coil spring B1 as shown in FIG. 12 , and when the internal coil is energized, the coil generates magnetism and as shown in FIG. 13 , the plunger P is attracted against the biasing force of the coil spring B1 and displaced to the left side in the same figure.

The housing component 2 is composed of a cup-shaped component that opens downward, and as shown in FIG7, is formed with a connector portion 2a that can connect the tip of the wiring extending from the side of the vehicle body, a notch portion 2b that can insert the lock rod R, and an opening portion 2c facing the solenoid S. Next, the housing component 2 is as shown in FIG4, in which the solenoid S, the lock rod R, the connecting rod component 5 and the switching component 6 are accommodated, and the accommodating space is closed by installing the cover component 3. In addition, a fastening component 4 is installed on one end side of the housing component 2 as shown in FIGS. 1 to 3, so that the steering lock device 1 is installed at a predetermined position of the vehicle through the fastening component 4.

The connecting rod element 5 (transmission element) can transmit the displacement action of the solenoid S to the lock rod R through the switching element 6, and is composed of a long connecting rod element having one end 5a and the other end 5b. The connecting rod element 5 of this embodiment is rotatable around the one end 5a, and the other end 5b is connected to the pushing portion 8 of the switching element 6, and the plunger P is connected between the one end 5a and the other end 5b.

More specifically, one end 5a of the connecting rod element 5 is rotatably installed so as to be inserted into a shaft portion La formed protruding from the housing element 2, and the other end 5b is rotatably installed so as to be inserted into a shaft portion Lb formed protruding from the base end of the pressing portion 8 of the switching element 6. In addition, a portion between the one end 5a and the other end 5b of the connecting rod element 5a is rotatably installed so as to be inserted into a shaft portion Lc formed protruding from the protruding end of the plunger P.

Therefore, when the coil of the solenoid S is energized to displace the plunger P from the protruding state (see FIG. 12) to the attracted state (see FIG. 13), the link element 5 rotates in the direction of the arrow in FIG. 13 with one end 5a as the center, and the other end 5b is pressed against the pressing portion 8 along with the rotation, so that the switching element 6 can be operated. Then, when the coil of the solenoid S is energized, the force of the plunger P being attracted by the coil disappears, and the plunger P is pushed and displaced by the biasing force of the coil spring B1 until it returns to the protruding state as shown in FIG. 14.

The lock rod R is composed of a shaft-shaped member mounted on the housing member 2 as shown in FIGS. 4 to 6, and forms a protruding state (refer to FIG. 1) or a retracted state (refer to FIG. 5) forward or backward by the bias force (bias force) of the plunger P and the coil spring B2 that are displaced by energizing the solenoid S. Then, when the lock rod R is in the protruding state, as shown in FIGS. 12 and 13, the tip end of the lock rod R is locked with the recess K formed in the steering wheel W of the vehicle to perform the steering lock, and when the lock rod R is in the retracted state, as shown in FIG. 14, the tip end of the lock rod R is separated from the recess K, and the locking of the recess K of the steering wheel W is released to release the steering lock.

As shown in FIGS. 10 and 11 , the contact point housing component 10 is composed of a block component having an insertion hole 10a into which a locking rod R can be inserted, and the flange portion Ra of the locking rod R can be abutted against the edge of the insertion hole 10a for connection. As shown in FIGS. 10 and 11 , the bottom surface of the contact point housing component 10 is mounted with a contact point 11 made of a conductive metal, and as the contact point housing component 10 moves, the contact point 11 can slide on the inner top surface T of the housing component 2.

The switching element 6 is installed between the connecting rod element 5 and the lock rod R, and switches the lock rod R to the protruding state or the retracted state each time the plunger P has a displacement action. Its structure is the same as the core ejection mechanism of the so-called push-type ballpoint pen (a mechanism that causes the pen core to repeatedly be in the protruding state or the retracted state each time the push operation is performed). In other words, the switching element 6 is configured so that each time the solenoid S is energized to cause the plunger P to operate from the protruding state to the attracted state, the lock rod R is repeatedly in the protruding state or the retracted state.

Specifically, the switching element 6 is as shown in FIGS. 15 to 18, and includes a housing 7 having an insertion hole 7b, a pressing portion 8 inserted into the insertion hole 7b of the housing 7, and a rotor 9, wherein the pressing portion 8 has a plurality of convex strips f formed thereon at equal intervals in the circumferential direction, and the rotor 9 has a plurality of convex strips g formed thereon at equal intervals in the circumferential direction. In addition, a notch shape 7a and a groove 8a are formed on the housing 7 and the pressing portion 8, respectively, to avoid interference when the other end portion 5b of the connecting rod element 5 is inserted, and a mounting hole 8b for inserting the mounting shaft portion Lb is formed at the base end of the pressing portion 8.

In addition, the inner peripheral surface of the insertion hole 7b formed in the housing 7 is formed with a plurality of convex strips 7c formed thereon at equal intervals along the circumferential direction as shown in Figs. 10 and 16, and the convex strips f of the push portion 8 are embedded and assembled in the concave and convex concave portions formed by the convex strips 7c. Therefore, the rotation of the push portion 8 relative to the housing 7 is restricted, and only the sliding along the axial direction of the insertion hole 7b is allowed. Furthermore, the push portion 8 is a cylindrical structure having an insertion hole 8c penetrating along the axial direction, and as shown in Figs. 17 and 18, the protrusion 9a of the rotor 9 can be inserted into the insertion hole 8c.

In addition, an integrally formed flange 9b is formed at one end of the rotor 9, and as shown in FIGS. 12 to 14, the flange 9b of the rotor 9 is assembled by abutting against the flange Ra of the lock lever R. In addition, as shown in FIGS. 12 to 14, the contact point housing component 10, the flange Ra of the lock lever R, and the flange 9b of the rotor 9 are assembled one on another, and the contact point housing component 10, the lock lever R, and the rotor 9 are biased to the right side in the figure by the coil spring B2.

The rotor 9 rotates a predetermined angle each time the connecting rod element 5 (transmission element) transmits the displacement action of the plunger P, and alternately switches between a first locking position where the lock rod R is locked in a protruding state and a second locking position where the lock rod R is locked in a retracted state. That is, when the lock rod R is in a protruding state (refer to FIG. 12 ), the rotor 9 is located in the first locking position, and the protruding end surface g1 of the convex strip portion g of the rotor 9 abuts against the protruding end surface 7ca of the convex strip portion 7c of the housing 7, thereby locking the lock rod R in a protruding state. When the rotor 9 is located at the first locking position as described above, as shown in FIG. 17 , the protrusion 9a is inserted into the insertion hole 8c of the pressing portion 8, and the protruding end face g1 of the ridge portion g is separated from the protruding end face f1 of the ridge portion f by a predetermined size.

When the solenoid S is energized from this state and the plunger P is displaced to the attracted state, as shown in FIG13, the other end 5b of the connecting rod element 5 pushes the pressing portion 8 to the left side in the figure, and as shown in FIG18, the protruding end face f1 of the convex stripe portion f abuts against a part of the protruding end face g1 of the pressing convex stripe portion g. The protruding end face f1 of the convex stripe portion f is formed by deflection (gradient of a predetermined angle) relative to the axial direction (moving direction of the pressing portion 8), and pushes the rotor 9 in the rotation direction. In addition, after the solenoid S is energized, the plunger P is in a protruding state (the state of FIG12) due to the biasing force of the coil spring B1, so the connecting rod element 5 also returns to the original state.

Then, when the rotor 9 rotates relative to the housing 7, the convex stripe portion g of the rotor 9 separates from the convex stripe portion 7c of the housing 7 to release the lock, and the protruding end surface g1 of the convex stripe portion g and the protruding end surface f1 of the convex stripe portion f are kept in abutment and locked state, and the rotor 9 is moved to the second locking position (refer to FIG. 14) by the biasing force of the coil spring B2. At this time, while the rotor 9 moves, the locking rod R and the contact point housing element 10 also move in the same direction (to the right in FIG. 14) due to the biasing force of the coil spring B1, so that the locking rod R can be locked in the retracted state.

Thereafter, when the solenoid S is energized again to displace the plunger P to the attracted state (see FIG. 13 ), the other end 5b of the link element 5 pushes the push portion 8 to the left in FIG. 13 , and the protruding end face f1 of the ridge portion f is in contact with a part of the protruding end face g1 of the ridge portion g, while the rotor 9 moves together with the push portion 8. In addition, after the solenoid S is energized, the plunger P is in a protruding state (the state of FIG. 12 ) due to the biasing force of the coil spring B1, so the link element 5 also returns to its original state.

Then, when the rotor 9 moves to the protruding end surface 7ca of the convex strip portion 7c in the housing 7 against the biasing force of the coil spring B2, it rotates relative to the housing 7 and is located at the second locking position, so that the protruding end surface g1 of the convex strip portion g is locked to the protruding end surface 7ca of the convex strip portion 7c. At this time, since the lock rod R and the contact point housing element 10 also move in the same direction (left side in FIG. 14) against the biasing force of the coil spring B1 while the rotor 9 moves, the lock rod R can be locked in the protruding state.

Therefore, since the rotor 9 moves between the first position and the second position each time the solenoid S is energized, the lock rod R can move between the protruding state and the retracted state each time the solenoid S is energized. Therefore, the lock rod R can be kept in the protruding state or the retracted state without continuously energizing the solenoid S, which can prevent battery consumption and overheating of the solenoid S, and it is not necessary to use an expensive self-holding solenoid, which can reduce manufacturing costs.

In addition, the contact point housing member 10 connected to the base end side of the lock rod R of the present embodiment is mounted with the contact point 11 as described above, and when the lock rod R moves between the protruding state and the retracted state, the contact point 11 can slide on the inner top surface T of the housing member 2. In addition, as shown in FIG7, a contact plate 12 is formed on the inner top surface T of the housing member. This contact plate 12 is made of a metal member (conductive member) insert-molded on the inner top surface T of the housing member 2, and as shown in FIGS. 8 and 9, it is configured to have a first contact plate 12a, a second contact plate 12b, a third contact plate 12c, a fourth contact plate 12d, and a fifth contact plate 12e.

The first contact plate 12a and the second contact plate 12b are connected to the wire h extending from the positive terminal and the negative terminal of the solenoid S, and can be connected to the control component 14 through the terminal parts a and b. The control component 14 is composed of a microcontroller installed on the side of the vehicle body, and is electrically connected to the solenoid S through the terminal parts a, b and the wire h, and can energize the solenoid S at any time.

When the contact point 11 moves together with the contact point housing component 10, the third contact plate 12c, the fourth contact plate 12d and the fifth contact plate 12e form a circuit corresponding to the contact position with the contact point 11, and are connected to the detection component 15 through the terminal parts c~e. The detection component 15 is the same as the control component 14, and is composed of a microcontroller installed on the side of the vehicle body, and is connected to the third contact plate 12c, the fourth contact plate 12d and the fifth contact plate 12e respectively.

Therefore, when the lock rod R is in the protruding state and the contact point 11 is in the position H1 (refer to Figures 8 and 9), conduction will be formed between the third contact plate 12c and the fifth contact plate 12e to form a circuit. When the lock rod R is in the retracted state and the contact point 11 is in the position H2 (refer to Figures 8 and 9), conduction will be formed between the fourth contact plate 12d and the fifth contact plate 12e to form a circuit.

Therefore, since the detection component 15 is respectively connected to the third contact plate 12c, the fourth contact plate 12d and the fifth contact plate 12e, the position of the lock rod R can be detected based on the circuit formed between the contact point 11 and the contact plate 12 (the third contact plate 12c, the fourth contact plate 12d and the fifth contact plate 12e), and the protruding state or retracted state of the lock rod R can be detected even without a separate sensor such as a non-contact sensor.

According to the present embodiment, since there are provided a solenoid S having a plunger P that can be displaced by energizing a coil, a connecting rod element 5 that can transmit the displacement action of the solenoid S to the lock rod R, and a switching element 6 installed between the connecting rod element 5 and the lock rod R and switching the lock rod R to a protruding state or a retracted state each time the plunger P has a displacement action, the lock rod R can be moved using the solenoid S to increase the response speed of the lock rod R and ensure the required moving distance of the lock rod R.

In addition, since the switching element 6 of the present embodiment has a rotor 9, it rotates a predetermined angle each time the connecting rod element 5 transmits the displacement action of the plunger P, and alternately switches between a first locking position for locking the lock rod R in a protruding state and a second locking position for locking the lock rod R in a retracted state, so that the lock rod R can be maintained in a protruding state or a retracted state with a simple structure.

Furthermore, since the transmission element capable of transmitting the displacement action of the solenoid S to the lock rod R is composed of the long connecting rod element 5 having one end 5a and the other end 5b, it is easy to ensure the required movement distance of the lock rod R. Furthermore, since the connecting rod element 5 of the present embodiment can rotate freely around the one end 5a as the center, and the other end 5b is connected to the switching element 6, and the plunger P is connected between the one end 5a and the other end 5b, the connecting rod element 5 can transmit the displacement action of the plunger P to the switching element 6 while rotating around the one end 5a as the center.

In addition, according to the steering lock device 1 of the present embodiment, since it includes the contact point 11 mounted on the lock rod R, the contact plate 12 (the third contact plate 12c, the fourth contact plate 12d, and the fifth contact plate 12e) forming a circuit corresponding to the contact position of the contact point 11, and the detection member 15 capable of detecting the position of the lock rod R based on the circuit formed between the contact point 11 and the contact plate 12, it is not necessary to have a sensor for confirming the positioning of the lock rod R, and the manufacturing cost can be reduced.

Furthermore, since the contact plate 12 of the present embodiment is composed of a metal member insert-molded in the housing member 2, it is possible to prevent the contact plate 12 from being misaligned with respect to the housing member 2, and it is possible to accurately detect the position of the lock rod R. In particular, since the contact plate 12 is formed on the inner top surface T of the housing member 2 which is cup-shaped and opens downward, it is possible to suppress infiltration of rainwater, etc., and thus avoid electrical failures.

Although the above description is directed to this embodiment, the present invention is not limited thereto. For example, as shown in FIGS. 19 to 22 , a connecting rod element 5 (transmission element) may be used, which has one end 5a connected to the plunger P and the other end 5b connected to the switching element 6 and can be freely rotated around a predetermined position between the one end 5a and the other end 5b.

In this case, one end 5a of the connecting rod element 5 is rotatably installed so as to be inserted into a shaft portion La formed protruding from the plunger P, and the other end 5b is rotatably installed so as to be inserted into a shaft portion Lb formed protruding from the base end of the pressing portion 8 of the switching element 6. In addition, the portion between the one end 5a and the other end 5b of the connecting rod element 5a is rotatably installed so as to be inserted into a shaft portion Lc formed protruding from the housing element 2.

Therefore, as shown in FIG. 22, when the coil of the solenoid S is energized to displace the plunger P from the protruding state to the attracted state, the link element 5 rotates around the position between the one end 5a and the other end 5b, and the other end 5b is pressed against the pressing portion 8 along with the rotation, so that the switching element 6 can be operated. Then, when the coil of the solenoid S is de-energized, the force of the plunger P being attracted by the coil disappears, and the plunger P is pushed and displaced by the biasing force of the coil spring B1 until it returns to the protruding state.

According to the other embodiments, since one end 5a of the connecting rod element 5 is connected to the plunger P, and the other end 5b is connected to the switching element 6, and can be freely rotated around a predetermined position between the one end 5a and the other end 5b, the connecting rod element 5 can transmit the displacement action of the plunger P to the switching element 6 while rotating around a predetermined position between the one end 5a and the other end 5b.

In addition, in this embodiment, although the connecting rod element 5 is used as a transmission element capable of transmitting the displacement action of the plunger P to the lock rod R, other types of transmission elements may also be used. In addition, in this embodiment, although it is applied to a motorcycle as an example, it may also be applied to other types of vehicles.

Industrial Applicability As long as it is a solenoid having a plunger that can be displaced by energizing the coil; a transmission element that can transmit the displacement action of the solenoid to the lock rod; and a switching element installed between the transmission element and the lock rod, and switches the lock rod to a protruding state or a retracted state each time the plunger has a displacement action, it can also be an item with a different appearance or added other functions.

1: Steering lock device 2: Housing component 2a: Connector part 2b: Notch part 2c: Opening part 3: Cover component 4: Fastening component 5: Link component (transmission component) 5a: One end 5b: The other end 6: Switching component 7: Housing 7a: Notch shape 7b: Insertion hole 7c: Rib part 8: Pushing part 8a: Groove 8b: Mounting hole 8c: Insertion hole 9: Rotor 9a: Protrusion 9b: Flange part 10: Contact point housing component 10a: Insertion hole 11: Contact point 12: Contact plate 14: Control component 15: Detection component S: Solenoid P: plunger R: lock rod Ra: flange B1, B2: coil spring T: inner top surface W: turn K: concave part f, g: ridge part

FIG. 1 is a perspective view showing the appearance of a steering lock device (lock rod protruding state) according to an embodiment of the present invention. FIG. 2 is a four-sided view showing the appearance of the same steering lock device. FIG. 3 is a perspective view showing the appearance of the same steering lock device (lock rod retracted state). FIG. 4 is a perspective view showing the same steering lock device (cover element removed state). FIG. 5 is a perspective view showing the main components of the same steering lock device. FIG. 6 is a perspective view showing the main components of the same steering lock device. FIG. 7 is a perspective view showing the shell element of the same steering lock device and the contact plate formed on the shell element. FIG. 8 is a plan view showing the contact plate in the same steering lock device. FIG. 9 is a perspective view showing the same contact plate and the solenoid connected to the contact plate. FIG. 10 is an exploded perspective view showing the switching element, the lock rod, the contact point, and the contact point housing element in the same steering lock device. FIG. 11 is a perspective view showing the contact point and the contact point housing element in the same steering lock device. FIG. 12 is a schematic diagram showing that the lock rod in the same steering lock device is in a protruding state so that the steering is locked. FIG. 13 is a schematic diagram showing that when the lock rod in the same steering lock device is in a protruding state, the plunger of the solenoid is displaced and the switching element is operated through the connecting rod element. FIG. 14 is a schematic diagram showing that the lock rod in the same steering lock device is in a retracted state and the steering lock is released. FIG. 15 is a three-sided view showing the switching element in the same steering lock device. FIG. 16 is a perspective view showing the switching element in the same steering lock device. FIG. 17 is a schematic diagram showing the pushing portion and the rotor constituting the same switching element. FIG. 18 is a schematic diagram showing the pushing portion and the rotor constituting the same switching element. FIG. 19 is a perspective view showing the appearance of the steering lock device (lock rod protruding state) according to other embodiments of the present invention. FIG. 20 is a four-sided view showing the appearance of the same steering lock device. FIG. 21 is a perspective view showing the same steering lock device (cover element removed state). Figure 22 is a perspective view showing the main components of the same steering lock device.

1: Steering lock device

2: Shell components

2a: Connector part

3: Cover element

4: Fastening elements

R:Lock lever

Claims (5)

A steering lock device includes a lock rod mounted on a housing element, wherein the steering of a vehicle is locked by the lock rod protruding forward, and the steering lock is released by the lock rod retracting backward, and the steering lock is released. The device includes: a solenoid having a plunger that can be displaced by energizing a coil; a transmission element that can transmit the displacement action of the solenoid to the lock rod; and a switching element mounted between the transmission element and the lock rod, and switches the lock rod to a protruding state or a retracted state each time the plunger has a displacement action. A rotary lock device as described in claim 1, wherein the switching element has a rotor that rotates a predetermined angle each time the transmission element transmits the displacement action of the plunger, and switches alternately between a first locking position in which the locking rod is locked in a protruding state and a second locking position in which the locking rod is locked in a retracted state. A steering lock device as described in claim 1, wherein the transmission element is composed of an elongated connecting rod element having one end and another end. A steering lock device as described in claim 3, wherein the connecting rod element can rotate freely around one end, while the other end is connected to the switching element, and the plunger is connected between the one end and the other end. A steering lock device as described in claim 3, wherein one end of the connecting rod element is connected to the plunger, and the other end is connected to the switching element, and can rotate freely around a predetermined position between the one end and the other end.

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