JP2010007823A - Gear locking device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gear locking device which is excellent in attachability and is capable of miniaturizing comparing to the prior art. <P>SOLUTION: The gear locking device is configured so as to provide in a second housing 11 an actuating member 14 for making a first rotating member 3 inside a first housing 1 in locked state with the second housing 11 attached by inserting the actuating member 14 with respect to an opening 2 of the first housing 1 from outside of the first housing 1. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a gear lock device.

Conventionally, a gear lock device locks the rotation of a gear to lock the rotation of a rotary shaft connected to the gear, and is used, for example, in an automatic transmission of an automobile. In the configuration, there are a gear, a lock pole that is detachable with respect to the gear, a motor that is a drive source, and a member that transmits the driving force of the motor to the lock pole. A rod connected to the rotating shaft of the motor; a gear that rotates integrally with the rod; an L-shaped rod that engages with a hole provided in a side surface of the gear; and a tapered shape that is fitted to the L-shaped rod. And a cam. The cam is fitted to the L-shaped pole while being pressed in one direction by a spring. Patent Document 1 discloses a configuration in which a motor is assembled on the outside of a housing and other components are incorporated in one housing of this gear lock device.
JP 2008-39094 A (27-29 paragraphs, FIG. 1)

  However, in the conventional gear lock device, it is necessary to assemble a large number of parts from one direction in one housing. For this reason, the assemblability is not good, leading to high costs. This is a problem particularly when the housing is large and heavy.

  Further, in order to transmit the driving force of the motor assembled outside the housing to the lock pole in the housing, a rod connected to the rotating shaft of the motor in the housing, a gear that rotates integrally with the rod, An L-shaped rod that engages with a hole provided on the side surface of the gear, a tapered cam that is fitted to the L-shaped rod, a spring that presses the cam in one direction, and the like are used. There is a problem that the path for transmitting the signal becomes complicated and the gear lock device becomes large. Along with this, the housing including the gear lock device also becomes large.

  Accordingly, the present invention has been made in view of the above-described problems, and an object thereof is to provide a gear lock device that can be easily assembled and reduced in size as compared with the conventional art.

  In order to solve the above problem, the present invention provides a first housing having an opening, a first rotating member disposed in the first housing, a second housing provided with a rotating mechanism, and the second housing. A second rotating member in the rotating mechanism, an actuating member disposed in the second housing and operating in synchronization with the movement of the second rotating member, and the first or second housing. A gear lock device comprising a lock pole pivotally supported and detachable with respect to the first rotating member, and a spring for biasing the lock pole in one direction, the biasing force of the spring by the operating member The second housing is assembled to the first housing with respect to the opening so that the lock pole is pressed against the opening and the lock pole engages with the first rotating member. And the.

  The lock pawl and the spring are provided in the first housing and have a rack and pinion mechanism by the second rotating member and the operating member.

  Further, the actuating member has a tapered surface at the tip, and the lock pawl is engaged with the first rotating member by pressing the lock pawl with the tapered surface.

  Furthermore, the lock pole and the spring are provided in the second housing, and the operating member is a cam that rotates integrally with the second rotating member.

  In the present invention, the operating member for locking the first rotating member in the first housing is provided in the second housing, and the second housing is assembled from the outside of the first housing. The second housing and the second housing having the actuating member can be sub-assembled with respect to the first housing having the lock mechanism by the lock pole and the lock member, and can be assembled from one direction, and the number of parts to be directly assembled can be reduced. . Further, the second housing is pressed against the biasing force of the spring of the first housing to press the lock pole, so that the lock pole is engaged with the first rotating member so that the second housing is engaged with the second housing. Since the housing only has to be assembled from the outside, the assemblability is improved.

  In this case, since the lock pole and the spring are provided in the first housing and the rack and pinion mechanism is configured by the second rotating member and the operating member, the operating member is locked against the urging force of the spring. When assembling the first housing and the second housing while being pressed, the rack and pinion mechanism is used on the second housing side by the second rotating member and the actuating member, and the load on the motor is easily reduced during assembly. Can be assembled.

  If the power transmission path from the motor that operates the operating member to the operating member that engages and disengages the lock pole is constituted by a rotating member such as a gear, it can be simplified as compared with the conventional lock gear device, and the gear lock device than before. Can be miniaturized.

  In addition, the operating member has a tapered surface at the tip, and by pressing the lock pole with the tapered surface provided at the tip of the working member, the lock pole is engaged with the first rotating member, Abrupt operating force is not required at the time of assembly, and the force that presses the lock pole can be gradually increased using the tapered surface of the actuating member, enabling smooth assembly and reducing the load on the motor during pressing. it can.

  Further, if the lock pole and the spring are provided in the second housing and the operating member is a cam that rotates integrally with the first rotating member, the cam is operated by the cam using the cam provided in the second housing. The member can be pressed and assembled to the first housing, the above-described rack and pinion mechanism is not necessary, and the number of parts to be assembled to the first housing can be further reduced. This is advantageous when the first housing is downsized.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a front view showing the overall configuration of the first embodiment of the present invention. 1A shows a gear lock state of the gear lock device 100, and FIG. 1B shows a gear lock release state.

  The gear lock device 100 includes a first housing 1 having an opening 2 on a part of a side surface, and a first rotating member (first rotation member) rotatably supported on a rotating shaft 3a in the first housing 1. 1 gear) 3 is provided. Further, in the first housing 1, a lock pole 21 that is pivotally supported by a shaft 21 a on the first housing 1, rotates around the shaft 21 a, and is detachable with respect to the first rotating member 3, and one end thereof. A spring 22 is inserted and supported in the first housing 1, the other end is locked by a locking portion provided on the lock pole 21, and the lock pole 21 is urged in one direction counterclockwise as shown in FIG. 1. Yes.

  The 1st rotation member 3 in the 1st housing 1 has the tooth tip 3b and the tooth gap 3c in the outer peripheral part. Further, the lock pole 21 has a shaft 21 a that is pivotally supported by the first housing 1, has a shape shown in FIG. 1, and is a claw portion that is detachable with respect to the tooth groove 3 c of the first rotating member 3. 21b is provided at a substantially intermediate position, and a second protrusion 21c is provided at the end opposite to the shaft 21a. The spring 22 has a biasing force acting in a direction in which the lock pole 21 is detached from the first rotating member 3, that is, in a direction in which the lock pole 21 rotates clockwise around 21a in FIG.

  The second housing 11 has a first protrusion 11 a inserted into the opening 2 provided on the side surface, and a motor 31 shown in FIG. 2 is provided outside the second housing 11. Inside the second housing 11, a second rotating member (gear) 13 for transmitting a driving force from the rotating shaft 12 of the motor 31 and a straight line that meshes with the second rotating member 13 and operates in the axial direction synchronously. The actuating member 14 is provided. In the first embodiment, as shown in FIG. 1, as the second rotating member 13, a reduction mechanism is configured using a gear 13a, a gear 13b, a gear 13c, a gear 13d, and a gear 13e. The actuating member 14 has a rack gear 14 a in which the final gear 13 e of the speed reduction mechanism is a pinion gear, and operates in synchronization with the movement of the second rotating member 13. The actuating member 14 has a rod shape, and the actuating member 14 projects from the first protrusion 11a of the second housing 11 as shown in FIGS. The side that engages is a tapered surface 14b. The lock pole 21 can be gradually pressed and displaced by the tapered surface 14b.

  As shown in FIG. 1, the second housing 11 is assembled by inserting the first protrusion 11 a into the opening 2 of the first housing 1, and then the plurality of bolts 41 a and 41 b are used to form the first housing 11. 1 is assembled from one direction. In this case, the first housing 1 and the second housing 11 are both sub-assembled, and then can be assembled together.

  FIG. 1A shows the gear lock state. That is, the lock pole 21 is engaged with the first rotating member 3 by pressing the lock pole 21 against the urging force of the spring 22 in a state where the operation member 14 protrudes from the second housing 11. Yes. In this state, the gear lock is achieved. On the other hand, FIG. 1B illustrates a gear lock release state. That is, the operating member 14 is shown retracted and retracted into the moving space in which the operating member 14 in the second housing moves relative to the second housing 11. In this state, the actuating member 14 does not press the lock pole 21, and the lock pole 21 rotates clockwise about the shaft 21a by the biasing force of the spring 22, and becomes the highest point shown in FIG. It can be in a state of being detached from the one rotation member 3.

  The operation of engaging and disengaging the lock pawl 21 with the first rotating member 3 is performed via the second rotating member 13 that decelerates the rotation of the motor 31 from the rotating shaft 12 by a plurality of gears by the driving force of the motor 31. Thus, by operating the operating member 14, the operating member 14 can be switched by reciprocating in one direction by a rack and pinion mechanism. When the actuating member 14 protrudes from the second housing, the tapered surface 14b at the tip of the actuating member 14 abuts on the second projecting portion 21c of the lock pole 21, and the second projecting portion 21c of the lock pawl 21 is tapered surface 14b. Further, from the position beyond the tapered surface 14b, the operating portion 14 is projected by being brought into sliding contact with the side surface 14c.

  Further, a waiting mechanism 15 is provided between the gear 13d of the second rotating member 13 and the last gear 13e. The waiting mechanism 15 is for adjusting the timing of engagement between the tooth groove 3c provided on the outer periphery of the first rotating member 3 and the claw portion 21b of the lock pole 21, and uses the elastic force of the spring. is there. When the claw portion 21b of the lock pole 21 hits the tooth tip 3b of the first rotating member 3 and does not fit into the tooth groove 3C, the operation of the operation member 14 protruding to the second housing stops, and the tooth groove 3c Wait for it to enter. Thereafter, when the first rotating member 3 rotates and the tooth groove 3c of the first rotating member 3 is rotated to a position where it engages with the claw 21b of the lock pole 21, the claw portion 21b of the lock pole 21 is rotated by the tooth groove of the first rotating member 3. Engage securely with 3c. Thereby, engagement with the lock pole 21 and the 1st rotation member 3 can be performed smoothly.

  FIG. 2 is a top view of the gear lock device 100. The second housing 11 includes a motor 31 and a control device 32 that controls the operation of the motor 31. The control device 32 has a power input terminal 33 for driving the motor 31 and a control circuit (not shown) inside. The control device 32 is configured to energize the motor 31 when a predetermined input signal enters the control circuit. In this case, when a motor with a brush is used as the motor 31, the motor 31 cannot be driven to rotate simply by energizing the power input terminal 33. Therefore, when a malicious operator prepares the battery and releases the locked state of the gear lock device, the motor cannot be rotated by simply energizing the coil of the brushed motor. Yes. For example, when the gear lock device 100 as described above is used for an automatic transmission of an automobile, an effect of preventing theft of the automobile can be obtained.

  Next, the configuration of the second embodiment of the present invention will be described with reference to FIG. FIG. 3A shows a gear lock state, and FIG. 3B shows a gear lock release state.

  The gear lock device 100 includes a first housing 1 having an opening 2 on a side surface, and includes a first rotating member 3 in the first housing 1.

  The first rotating member is rotatably supported on the rotating shaft 3a, and has a tooth tip 3b and a tooth groove 3c on the outer periphery.

  A motor 31 is mounted outside the second housing 11, and a second rotating member 13 that decelerates the motor rotation by constituting a reduction mechanism for the rotation of the motor 31 from the rotating shaft 12 by a plurality of gears 13 a to 13 d. And an operating member 14 that operates in synchronization with the second rotating member 13. The actuating member 14 uses a cam that rotates integrally with the rotating shaft 12 of the motor 31, and the cam has a large diameter at one location and rotates coaxially with the gear 13d.

  On the other hand, in the second housing 11, an operating member that rotates while being pivotally supported with respect to the second housing 11, has a tip projecting from the opening 2, and is detachable from the first rotating member 3. (Lock pole) 21 and a spring 22 that urges the lock pole 21 in one direction (a counterclockwise direction in FIG. 3A). The spring 22 uses a coil spring, one end is locked to the side surface of the lock pole 21, and the other end is locked to a protrusion formed integrally with the inside of the second housing 11. In the second embodiment, the lock pole 21 is pivotally supported on the shaft 21 a in an opening provided in a size corresponding to the size of the opening 2 of the first housing 1 formed inside the second housing 11. It has been turned freely. The lock pawl 21 is provided with a claw portion 21b detachably engageable with the tooth groove 3c of the first rotating member 3 so as to face the first rotating member 3 on the opposite side of the surface engaged with the cam. The spring 22 applied to the lock pole 21 is configured such that the urging force acts in the direction in which the lock pole 21 is detached from the first rotating member 3 (counterclockwise direction in FIG. 3).

  As shown in FIG. 3A, the first housing 1 and the second housing 11 having the above-described configuration are configured such that the lock pole 21 is rotated by the cam through the opening 2 of the first housing 1. Is changed from the state shown in FIG. 3B to the state shown in FIG. 3A, the lock pole 21 is engaged with the first rotating member 3 and assembled from one direction. In this state, the second housing 11 is fixed to the first housing 1 by a plurality of bolts 41a and 41b.

  3A shows a gear lock state of the gear lock device 100. FIG. That is, the cam which is the operating member 14 presses the pressed portion on the side surface provided on the side opposite to the claw portion 21b of the lever-shaped lock pole 21 by the outer cam surface. As a result, it is possible to create a state in which the first rotating member is pressed by the lock pole 21 pressed by the cam and the lock pole 21 is firmly engaged with the tooth groove 3 c of the first rotating member 3. On the other hand, FIG. 3B shows a gear lock release state. That is, when the cam 14 is rotated by the motor 31 and the cam 14 does not press the lock pawl 21 (b), the lock pawl 21 is detached from the first rotating member 3 by the urging force of the spring 22. Can do.

  The above-described operation of engaging / disengaging the lock pole 21 with the first rotating member 3 is performed by the driving force of the motor 31. That is, the motor 31 is switched by operating the cam 14 via a speed reduction mechanism that decelerates the rotation of the motor 31 from the rotary shaft 12 by the plurality of gears 13a to 13d. The cam portion 14d with the cam 14 having a larger diameter presses the back surface 21d of the surface having the claw portion 21a of the lock pole 21, and further locks while the front end portion 14a of the cam 14 slides along the back surface 21d. The pole 21 is pushed out toward the opening 2, and the tip 14d of the cam 14 is formed on the opposite side to the shaft 21a of the lock pole 21, and the third projection 21e functions as a stopper for suppressing the rotation of the cam. Rotates until it touches. Further, a waiting mechanism 15 similar to that of the first embodiment is provided between the gear 13d of the second rotating member 13 and the cam 14. The waiting mechanism 15 adjusts the timing at which the tooth groove 3c on the outer peripheral portion of the first rotating member 3 and the claw portion 21b of the lock pole 21 are engaged, and uses the elastic force of the spring. When the claw portion 21b of the lock pole 21 hits the tooth tip 3b of the first rotating member 3 and does not fit into the tooth groove 3c, the cam 14 stops rotating and waits until it enters the tooth groove 3c. Thereafter, when the first rotating member 3 rotates and the tooth groove 3c of the first rotating member 3 rotates to a position where it engages with the claw 21b of the lock pole 21, the claw 21b of the lock pole 21 turns into the tooth groove 3c of the first rotating member 3. Engage with. Thereby, engagement with the lock pole 21 and the 1st rotation member 3 is performed smoothly.

  As mentioned above, although embodiment of this invention was described, the above-mentioned structure has shown only an example of this invention and does not limit this invention to the said embodiment. For example, in the above-described embodiment, the assembly direction of the second housing is attached in the vertical direction with respect to the rotation surface of the gear, but may be configured in the horizontal direction.

It is a front view which shows the whole structure of 1st Embodiment of this invention, (a) is a gear lock state, (b) is a gear lock release state. It is a top view of a 1st embodiment of the present invention. It is a front view which shows the whole structure of 2nd Embodiment of this invention, (a) is a gear lock state, (b) is a gear lock release state.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 1st housing 2 Opening part 3 1st rotation member 11 2nd housing 13 2nd rotation member 14 Actuating member 21 Lock pole 22 Spring 31 Motor 100 Gear lock apparatus

Claims (4)

A first housing having an opening;
A first rotating member disposed in the first housing;
A second housing provided with a rotation mechanism;
A second rotating member disposed in the second housing and in the rotating mechanism;
An actuating member disposed in the second housing and actuating in synchronization with the movement of the second rotating member;
A lock pole pivotally supported with respect to the first or second housing and detachable with respect to the first rotating member;
A spring that biases the lock pole in one direction;
In a gear lock device comprising:
The actuating member presses the lock pawl against the biasing force of the spring, and the second housing moves the first housing relative to the opening so that the lock pawl engages the first rotating member. A gear lock device assembled to a housing. 2. The gear lock device according to claim 1, wherein the lock pole and the spring are provided in the first housing and have a rack and pinion mechanism by the second rotating member and the operation member. The actuating member has a tapered surface at a distal end, and presses the lock pole with the tapered surface to engage the lock pole with the first rotating member. The gear lock device according to 2. The gear lock device according to claim 1, wherein the lock pole and the spring are provided in the second housing, and the operating member is a cam that rotates integrally with the second rotating member.

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