JP6494027B2 - Lock mechanism, movement control mechanism using lock mechanism, and apparatus equipped with movement control mechanism - Google Patents

Description

  The present invention relates to a lock mechanism that locks the movement of an operating member to make it impossible to move, a movement control mechanism using such a lock mechanism, and an apparatus equipped with the movement control mechanism.

Conventionally, various movement control mechanisms have been proposed for controlling the movement of a moving object. For example, there is an apparatus (training instrument) as shown in Patent Document 1. In this apparatus, the slings 3 and 4 are pulled out from the apparatus 5 (moving object) supported at the upper position such as the ceiling, and the gripping means 13 and 14 are gripped by the hand, and the gripping means 13 and 14 are passed through the ankles in various ways. Train. Since the use position and body shape of the user are various, a movement control mechanism is required that horizontally moves the apparatus 5 and stops it at an arbitrary position. Therefore, for example, moving means as shown in FIGS. 14 and 15 have been proposed.
As shown in FIG. 14, a case 103 is attached to a frame 104 disposed at a ceiling position as shown in FIGS. 15A and 15B through a cylindrical slider 101 formed with a flange 100 and a collar 102. To do. The device 5 of Patent Document 1 is suspended from the case 103. The apparatus 5 can be arranged at a desired position by making the case 103 slidable along the longitudinal direction of the frame 104 together with the slider 101 and the collar 102. Further, in this moving means, the press bar 105 is always urged by the coil spring 106 in the direction of pressing the center collar 102, and the collar 102 is pressed against the frame 104 to apply a brake by a frictional force. Thus, the case 103 is stopped. Then, by pulling the operation string 107 downward, the press bar 105 swings upward, the brake is released, and the case 103 is allowed to move.

Special table 2008-521480 gazette

However, such a movement control mechanism has the following problems. That is, in order to press the slider 101 against the frame 104 by the press bar 105 and brake it with the frictional force, the coil spring 106 must be given a fairly strong urging force, and a large force is inevitably required to release it. The operation string 107 must be pulled strongly. Therefore, there has been a demand for an easy-to-operate movement control mechanism that can reliably perform movement control without applying such a large force in an apparatus that involves this type of movement. Further, in order to reliably perform the movement control, a lock mechanism is required for reliably holding the brake operation member at the brake position and the brake release position. In other words, if there is a lock mechanism that can reliably hold the actuating member at a predetermined position with a simple structure, it can be applied to various devices other than the movement control mechanism.
The present invention is for solving the above-mentioned problems. An object of the present invention is to provide a lock mechanism capable of reliably disabling movement of an operating member with a simple structure, a movement control mechanism using such a lock mechanism, and a device equipped with the movement control mechanism.

As a first means for achieving the above object, an operation member that reciprocates between a first movement position and a second movement position, and a rotatable member adjacent to the operation member, The first engaging position engages with the operating member to hold the operating member at the first moving position, and the second rotating position causes the first moving position of the operating member to move from the first moving position to the first moving position. A locking member that allows movement to the second movement position, and the locking member moves in the direction of the rotation prevention member when displaced from the second rotation position to the first rotation position. And is prevented from rotating in the direction of the second rotation position by engaging with the rotation prevention member at the first rotation position, and by the operation of the rotation prevention release means, The engagement with the rotation preventing member is released.
With this configuration, the lock member is engaged with the operation member at the first rotation position when the operation member reciprocates between the first movement position and the second movement position. Thus, it engages with the rotation prevention member so as not to rotate in the second rotation position direction. Then, the operating member is locked so as not to move at the first movement position. Then, the lock-like body is released by operating the rotation prevention release means. Since it is such a configuration, it can be applied as an inexpensive and reliable locking mechanism in various devices using an operating member that can take two positions.

Here, “the lock member is given a force to move in the direction of the rotation preventing member when it is displaced from the second rotation position to the first rotation position” means, for example, that the lock member rotates itself. The center of gravity changes due to the position displacement due to the movement and moves in the direction of the rotation prevention member, or the support stops at the second rotation position and falls off with the rotation (that is, due to gravity) It can be moved in the direction of the rotation prevention member, or it can be as in the following second means.
The “rotation prevention member” is, for example, an engagement plate that is disposed at a position adjacent to the lock member that is engaged when the lock member is moved. It is good to contact (interfere) in the state of being energized intentionally or indirectly.
As the “rotation prevention releasing means”, for example, the lock member may be moved from a position where it interferes with the rotation prevention member to a position where it does not interfere. For example, it is a member such as a string-like member or a long member extending from the lock member. For example, by pulling this member, the lock member is moved from a position where it interferes with the rotation prevention member to a position where it does not interfere. Can do.

Further, as the second means, the force moving in the direction of the rotation preventing member is moved to the front position in the rotation direction of the lock member when being displaced from the second rotation position to the first rotation position. The force generated by interfering with the arranged interference body was used.
In other words, the interference member is disposed at the front position in the rotation direction of the lock member so as to generate a vector that intersects the movement direction, and the lock member is moved in the rotation prevention member direction by causing interference with the interference member. This is a case of biasing. In order to generate a vector in the intersecting direction, for example, a slanted contact surface may be formed on the lock member, and the contact surface may be contacted with the interference body. Further, for example, an inclined surface or a curved surface (a direction perpendicular to the curve tangent direction is directed to the rotation blocking member) is formed on the interference body, and the lock member is brought into contact with the position. Also good.
As a third means, the actuating member is biased by a biasing means in the second moving position direction.
Thus, when the operating member is biased by the biasing means, when the engagement state of the lock member with the rotation preventing member is released, the user does not have to operate the operating member one by one. Is convenient because it can automatically move from the first movement position to the second movement position.
Here, the “biasing means” is a concept including not only a spring means such as a coil spring and a leaf spring but also an elastic member such as sponge and rubber.

As a fourth means, when the lock member is in the first rotation position, the rotation prevention release means is operated to release the engagement with the rotation prevention member. The actuator is pushed by the actuating member that is displaced from the first movement position direction to the second movement position direction to be displaced from the first rotation position to the second rotation position.
In other words, the lock member rotates in conjunction with the operation member, and at least when the operation member is displaced from the first movement position direction to the second movement position direction, the lock member is pushed by the operation member to be the first. By displacing from the moving position direction to the second moving position direction, the driving means for displacing the lock member in the second moving position direction can be eliminated, and the structure around the lock member can be eliminated. Contributes to simplification.
Further, as a fifth means, the lock member is moved from the second rotation position to the first rotation in synchronization with the operation member moving from the second movement position to the first movement position. Displaced to the moving position.
With this configuration, the lock member is displaced from the second rotational position to the first rotational position when the operating member moves at least from the second movement position to the first movement position. In the first rotation position, a series of movements that engage with the operation member and hold the operation member in the first movement position becomes smooth, and the lock member becomes the rotation prevention member in the first rotation position without time lag. Can be engaged.
Here, the locking member may be caused by the moment of the force of its own as in the sixth means described below, or the force by which the operating member moves from the second moving position to the first moving position is pushed by the operating member. (Both of these are good)
Further, as a sixth means, the lock member is displaced from the second rotation position toward the first rotation position by a moment of force around the rotation axis.
That is, as a premise, when the lock member is in the second rotation position, the lock member has a moment of force as potential energy, and the moment rotates about the rotation axis by the moment, and the first rotation position direction. It is good to be displaced. This potential energy can be obtained by, for example, displacing the lock member to the first rotation position that is pushed upward by the actuating member as in the fourth means and is at a higher position.

Further, as a seventh means, an engagement maintaining means for maintaining the engaged state is formed at the engagement position between the lock member and the rotation preventing member.
As a result, the locking member is more securely engaged with the rotation preventing member by the engagement maintaining means, and the operating member can be reliably held at the first movement position.
The “engagement maintaining means” means, for example, that the front end of the lock member is formed in a bowl shape and inserted into the rotation prevention member side so that the engagement relationship between the lock member and the rotation prevention member is difficult to be eliminated. Good.

Further, as the eighth means, the operating member is reciprocated along the vertical direction.
That is, the arrangement state of the operation member of the lock mechanism is limited to reciprocate upward and downward. With this configuration, for example, when the operating member reciprocates, it can be moved down by gravity, or the lock member can be rotated by the moment of the force it has, such as the sixth means. It becomes.
As a ninth means, the operating member is reciprocated between the first position and the second position with a fulcrum as a swing center.
By setting the fulcrum in this way, the operating member can be firmly supported, and the amount of swinging of the operating member can be changed according to the distance from the fulcrum. For example, the operating member can be largely swung by moving the operating position away from the fulcrum. Can be made.

As a tenth means, the actuating member has a portion to which a load for moving to at least one of the first position and the second position is applied.
The “part to which a load is applied” is a part to which a force for moving the actuating member is applied and is a part to be pulled or pushed. The engagement relationship between the lock member and the rotation prevention member as well as the case where the operation member is moved to the first position or the second position by directly pulling or pushing the operation member at the portion where the load is applied. And the indirect case of moving the operating member to the first position or the second position by the biasing means, for example.
As an eleventh means, a drive transmission member connected to the actuating member is connected to a portion to which the load is applied.
As a result, it is not necessary to push the actuating member directly, and it is possible to operate it from a separated position. As the drive transmission member, a flexible pulling means such as a string or a chain is preferable when pulling, and a hard member such as a non-flexible bar is preferable when pressing the drive transmission member.
As a twelfth means, the rotation preventing release means is connected to the drive transmission member.
As a result, the operating member can be moved by operating the drive transmission member, and at the same time, the engagement of the lock member with the rotation preventing member can be released, and separate operations can be performed at once.
Further, as a thirteenth means, the drive transmission member includes a first drive transmission member to which the rotation prevention release means is connected and a second drive transmission member to which the rotation prevention release means is not connected. There was a kind.
As a result, the first drive transmission member is operated to disengage the lock member from the rotation preventing member, and at the same time, the operation member is allowed to move from the first movement position to the second movement position. On the other hand, the second drive transmission member is operated to allow movement from the second movement position to the first movement position.

As a fourteenth means, the actuating member and the locking member are mounted on one base.
Accordingly, the operating member and the lock member, which are the main parts of the lock mechanism, can be handled together with the base. The “base” is not limited as long as the operation member and the lock member are simultaneously mounted. For example, the operation member and the lock member may be mounted on a frame or a frame.
As a fifteenth means, the base is placed on a support that supports the base, and the base is movable in a predetermined direction on the support.
As a result, the operating member and the lock member can be supported on the base and moved on the support.
As a sixteenth means, a guide means for enabling the base to move in a predetermined direction on the support is provided.
This makes it possible to stably move the base in a desired direction on the support.
Further, as a seventeenth means, the operating member is engaged with the support body side at either the first movement position or the second movement position, so that the movement along the longitudinal direction of the support body is impossible. An engaging means is provided for this purpose.
By adopting such a movement control mechanism, it is possible to stop the moved base at a desired position on the support.
As an eighteenth means, the engaging means includes a first engaging body formed on one of the operating member and the support and a second engaging body formed on the other of the operating member or the support. An engaging body is provided, and the first engaging body and the second engaging body are engaged with each other so that the movement is disabled.
This is a movement control mechanism showing a specific example of the engaging means, and the engagement of the first engaging body and the second engaging body as the engaging means can surely stop the movement of the base, On the other hand, since the meshing is released only by separating the first engaging body and the second engaging body, the base can be easily and reliably moved or stopped.
As a nineteenth means, the movement control mechanism of the seventeenth means and the eighteenth means is mounted on the apparatus.

  According to the present invention, in the inventions according to claims 1 to 16, when the operating member reciprocates between the first moving position and the second moving position, the operating member is moved by the lock member at the first moving position. It can be locked so as not to move, and can be applied as a reliable locking mechanism that can be used in various devices using an operating member that can take two positions. In the inventions according to claims 17 to 19, it is possible to move or securely stop the base installed on the support by such a locking mechanism in relation to the support.

The partially cutaway front view of the training apparatus of an embodiment. The partially cutaway side view of the training apparatus of an embodiment. A top view of a training device of an embodiment. The partially cutaway principal part enlarged front view for demonstrating the structure of a brake bar vicinity in the training apparatus of embodiment. The partially cutaway principal part enlarged front view for demonstrating the structure of a brake bar vicinity in the training apparatus of embodiment. FIG. 3 is a partially cut-out enlarged plan view of a main part for explaining a structure in the vicinity of a brake bar and a rack in the training device according to the embodiment. FIG. 3 is a partially cutaway enlarged plan view of a main part of the training device according to the embodiment for explaining a structure in the vicinity of a brake bar and a lock plate. FIG. 4 is an enlarged side view of a partly cutaway main portion for explaining a structure in the vicinity of a brake bar and a lock plate in the training device according to the embodiment. (A) is explanatory drawing from the side surface explaining the relationship between a brake bar and a lock plate when the 1st string is pulled down, and its peripheral state, (b) is also a front view. (A) is explanatory drawing from the side direction explaining the relationship between a brake bar and a lock plate at the time of releasing a 1st string, and its peripheral state, (b) is also a front view. (A) is an explanatory view from the side direction explaining the relationship between the brake bar and the lock plate when the second string is pulled down and then the second string is released, and the state of the periphery, and (b) is the same. Front view. Explanatory drawing from the front direction explaining the relationship between the brake bar and the lock plate at the moment when the second string is pulled downward, and the surrounding state. (A) is explanatory drawing explaining the engagement state of a brake bar and a rack in the training apparatus of embodiment, Similarly (b) is explanatory drawing explaining a non-engagement state. The perspective view of the slider and collar which are components in the conventional movement control mechanism. (A) of the conventional movement control mechanism is a side view, (b) is a front view.

Hereinafter, description will be made based on a training mechanism equipped with a lock mechanism and a movement control mechanism using the lock mechanism according to an embodiment of the present invention. In the following description, the left and right directions in FIG. 3 are described as the left side and the right side, respectively.
As shown in FIGS. 1 to 3, the training apparatus 1 has a total skeleton composed of a total of four column frames 2 erected at four corners and a total of four beam frames 3 connecting adjacent column frames 2 to each other. Has been. As shown in FIG. 3, a pair of left and right rail frames 4 as a support are connected between a pair of beam frames 3 facing each other in a substantially square beam frame 3. The rail frame 4 is disposed at a symmetrical position so as to be a mirror image object in plan view. These column frame 2, beam frame 3 and rail frame 4 are all long bodies made of hollow aluminum alloy. A guide groove 5 along the longitudinal direction is formed on the first surface 4A facing the outer peripheral surfaces of the beam frame 3 and the rail frame 4. The rail frame 4 is fixed so that the first surface 4A is an upper and lower surface in order to use the guide groove 5.

As shown in FIGS. 1, 4, and 5, two moving bases 10 are mounted on the pair of left and right rail frames 4. Each moving base 10 includes a connecting frame 11 disposed between the rail frames 4 and a traveling unit 12 formed at both ends of the connecting frame 11. The connecting frame 11 and the traveling unit 12 constitute a gantry. The connection frame 11 is a frame that connects the left and right traveling units 12, and is suspended in the air by the traveling unit 12 placed on the rail frame 4. The connection frame 11 uses the same long body that is different from the beam frame 3 and the rail frame 4 in length.
The traveling unit 12 includes a pair of upper and lower support plates 13 fixed to the left and right ends of the connection frame 11 and a plurality of wheels 15 attached to the support plate 13. As shown in FIGS. 4 and 5, the support plate 13 is a wide plate made of an alloy that is bent in an L shape in a side view, and sandwiches the connection frame 11 from above and below at the end position of the connection frame 11. So that it is fixed. The bent portions closer to the front of the pair of upper and lower support plates 13 are respectively erected and suspended in a direction substantially along the end surface of the connection frame 11 to form a wheel attachment portion 13a. As shown in FIGS. 6 and 7, the upper support plate 13 is formed with a notch 23 for avoiding interference when a brake bar 25 described later moves up and down. As shown in FIG. 8, a stopper plate 24 as a rotation blocking member is attached to a position (left side in FIG. 8) adjacent to the notch 23 formed in the wheel attachment portion 13a of the support plate 13 on the right upper side. It has been. The stopper plate 24 is a thin plate made of an alloy having a substantially rectangular parallelepiped shape. For example, as shown in FIG. 9B, a slope 24 </ b> A is formed on the lower surface (bottom surface) of the stopper plate 24 so as to be higher toward the back side.

As shown in FIG. 3, two wheels 15 are rotatably attached to the outer surface (the surface facing the rail frame 4) of the wheel mounting portion 13a of the upper support plate 13 with a predetermined interval in the front-rear direction. . Although not shown, two wheels 15 are also attached to the wheel attachment portion 12a of the lower support plate 13 at a position that coincides with the upper side. In other words, the traveling unit 12 includes four wheels 15 that are combined up and down on only one side, and each moving base 10 includes two traveling units 12 and thus includes a total of eight wheels 15. As the wheels 15 roll, each moving base 10 can slide on the rail frame 4 separately. Each wheel 15 includes a large-diameter portion 15 a and rolling portions 15 b having a smaller diameter than those adjacent to the left and right of the large-diameter portion 15 a, and has a large diameter with respect to the guide grooves 5 disposed above and below the rail frame 4. The rolling portion 15b abuts on the first surface 4A of the rail frame 4 in a state where the portion 15a is inserted.
In FIG. 3, a rack 16 is disposed outside the left rail frame 4 along the longitudinal direction of the rail frame 4. The rack 16 is horizontally disposed at a position slightly higher than the position of the upper surface of the rail frame 4.

  As shown in FIGS. 1, 4, and 5, a pair of left and right locking plates 17 are attached near the left and right ends of the back surface of the rail frame 4. A main body case 18 of the training device is suspended and supported by both the locking plates 17. A training rope 19 is accommodated in the main body case 18 so that it can be pulled out. The rope 19 is provided with an annular operation portion 20 on the tip side thereof, and is suspended from the first outlet 21. The rope 19 is passed through a passage (not shown) in the main body case 18 and hangs outward from the second outlet 22 at the center of the main body case 18 (in FIG. 1, many portions of the rope 19 hang down are shown). Is omitted). The user can stop the operation unit 20 at an arbitrary vertical position by pulling out the rope 19. A mechanism for stopping the rope 19 and making it impossible to move is housed in the main body case 18, but the description thereof is omitted. For example, JP 2005-537082 A discloses a basic mechanism for stopping the rope 19 so as not to move.

Next, the lock mechanism mounted on the moving base 10 will be described.
As shown in FIGS. 1 to 13, a braking bar 25 as an operating member is disposed on the connection frame 11. The brake bar 25 is a rod-shaped body made of an alloy having a channel cross section, and is arranged so that the opening side faces downward. A parallel wall portion on the opening side of the brake bar 25 is a tooth 25a that meshes with the rack 16 side. As shown in FIGS. 1 and 3, the brake bar 25 is configured to be longer than the distance between the left and right rail frames 4, and intersects the left and right rail frames 4 in an orthogonal state at both ends in the disposed state. As shown in FIG. 5, the brake bar 25 is supported by a rotation shaft 26 positioned higher than the upper surface of the connection frame 11 near the left end on the connection frame 11 so as to be rotatable in the vertical direction around the rotation shaft 26. Has been. As shown in FIG. 4, the brake bar 25 is supported by a bolt 27 fixed to the connection frame 11 near the right end on the connection frame 11. A regulating nut 28 is fastened to the upper part of the bolt 27. A coil spring 29 as an urging means is disposed below the brake bar 25 and at the outer peripheral position of the bolt 27. With such a configuration, the brake bar 25 swings up and down along the bolt 27 within a range regulated by the regulation nut 28 with the pivot shaft 26 as the pivot center. Further, when the rear side of the brake bar 25 is moved downward, the coil spring 29 is compressed to generate a biasing force that pushes the rear end side of the brake bar 25 upward.
As shown in FIGS. 2 and 13 (a), when the coil spring 29 is fully extended by releasing its urging force, the front side (the left side in FIG. 1) of the brake bar 25 moves downward. The teeth 25a of the brake bar 25 are engaged with the teeth 16a of the rack 16. On the other hand, when the rear side of the rotating shaft 26 moves downward, the tip of the brake bar 25 moves upward to engage the teeth 25a with the teeth 16a of the rack 16, as shown in FIGS. The relationship is broken.
A first string 30 and a second string 31 as drive transmission members are disposed on the right side of the brake bar 25 with a predetermined interval therebetween. The two strings 30 and 31 are hung outside the right rail frame 4. In FIG. 1 and FIG. 3, the illustration below the two strings 30 and 31 is omitted.

As shown in FIGS. 1, 4, 7, 8, etc., the outer surface (the surface facing the rail frame 4) of the wheel mounting portion 13 a of the support plate 13 on the right side constituting the traveling portion 12 is used as a lock member. A lock plate 35 is provided. The lock plate 35 is composed of a single plate made of an alloy having an irregular planar shape in which arms are extended in two different directions from the base. Here, the shape will be described based on the lock plate 35 shown in FIGS.
The lock plate 35 is composed of a first extension part 35a and a second extension part 35b extending from the base part P in two directions at angles of about 90 degrees as if they were peninsulas. The second extending portion 35b is configured to be slightly longer than the first extending portion 35a. The front inner part of the first extension part 35a is bent at a substantially right angle in the direction of the second extension part 35b, and the front inner part of the second extension part 35b is 45 degrees in the direction of the first extension part 35a. It is bent to some extent. The front part of both the extension parts 35a and 35b is configured to be wide, the front inner part of the first extension part 35a is a bar engaging part 37, and the front inner part of the second extension part 35b. Is a stopper engaging portion 38. As shown in FIGS. 4, 9 to 11, and the like, the second extending portion 35 b extends along the outer side in the region on the surface side (surface facing the rail frame 4) adjacent to the stopper engaging portion 38. A slope 38A is formed so that the edge side becomes thinner. An area surrounded by a cove by both the extending portions 35a and 35b is referred to as an engagement area M here. As shown in FIGS. 4, 9 to 11, etc., a slope 35 </ b> A is formed such that the edge side becomes thinner along the outer side of the surface side (surface facing the rail frame 4) of the second extending portion 35 b. ing.
An eyebolt 39 is disposed at a position below the engagement region M and near the center of the second extending portion 35b.

As shown in FIG. 8, the lock plate 35 is suspended and supported on the outer surface of the wheel attachment portion 13a by the rotation shaft 36 so that the brake bar 25 passes through the engagement region M. Since the brake bar 25 is disposed so as to intersect with the notch 23, the engagement region M is also disposed so as to overlap with the notch 23. The brake bar 25 is exposed in the notch portion 23 so as to be surrounded by the lock plate 35 (so as to be sandwiched). The rotating shaft 36 is disposed at a position slightly closer to the first extending portion 35a side than the base portion P. As shown in FIGS. 9 to 11, the lock plate 35 has the second extending portion 35b substantially horizontal. It turns with the tip facing diagonally upward from the direction. As the weight balance of the lock plate 35, in such an arrangement state, the weight is largely biased in the direction of the second extending portion 35 b, and therefore, a counterclockwise rotational force (force moment) is always applied to the lock plate 35. It will be.
The lock plate 35 is rotatably supported by the rotation shaft 36 and has a slight margin around the rotation shaft 36. Also, there is a very small gap between the outer surface of the wheel mounting portion 13a (note that the gap is shown larger in FIGS. 4 and 9 to 11). For this reason, the lock plate 35 is slightly swingable so as to come in contact with and separate from the wheel mounting portion 13a while being regulated by the rotation shaft 36.
The base end of the auxiliary thread 40 is fixed to the eyebolt 39, and the distal end is connected to the second string 31 that hangs down from the brake bar 25. The eyebolt 39 and the auxiliary thread 40 correspond to the rotation prevention release means.

Next, in the method of using the training apparatus 1 configured as described above, the movement and stop mechanism of the movement base 10 will be described in detail.
1 and 2 show a state in which the two moving bases 10 of the training device 1 are stopped at an arbitrary position in the longitudinal direction of the rail frame 4 (in FIG. 4 and FIG. Solid line position). The brake bar 25 is held at a position where the front side thereof is lowered by the coil spring 29, and the teeth 25a of the brake bar 25 are engaged with the teeth 16a of the rack 16 as shown in FIGS. As a result, the moving base 10 is braked by this meshing and cannot be slid and is held at that position. At this time, as shown in FIGS. 11A and 11B, the lock plate 35 is not engaged with the stopper plate 24, and is pushed upward while being engaged with the brake bar 25 at the bar engaging portion 37. As a result, it is held at the position most rotated in the clockwise direction.

  In order to release such a braking state, the first string 30 is pulled downward. Then, the brake bar 25 is pulled by the first string 30 and swings in the direction in which the rear side is lowered with the rotation shaft 26 as a base point. The coil spring 29 is compressed by the brake bar 25 and has a biasing force. At the same time that the rear side of the brake bar 25 is lowered, the clockwise rotational force by the brake bar 25 to the lock plate 35 is eliminated, so that the lock plate 35 is counteracted by the rotational force due to its own weight and the pushing force when the brake bar 25 is lowered. Quickly turns clockwise. Then, as shown in FIGS. 9A and 9B, the slope 35 </ b> A of the second extension portion 35 b interferes with the corner of the rail frame 4 at the lower side of the rotation direction of the lock plate 35. The rotational force of the lock plate 35 generates a vector for moving the lock plate 35 in the direction of the wheel mounting portion 13a due to this interference, and the lock plate 35 is swung as shown in FIG. 9B to approach the wheel mounting portion 13a. To do. Next, when the first string 30 is released, the rear side of the brake bar 25 is moved upward by the urging force of the coil spring 29, and again the large rotational force in the clockwise direction against the rotational force due to the weight of the lock plate 35 again. give. With this rotational force, the lock plate 35 is rotated clockwise, and the stopper engaging portion 38 of the lock plate 35 is engaged with the lower surface of the stopper plate 24 as shown in FIGS. It is held in (the state that digs in). In addition, structurally, the first string 30 need only be pulled once to a position where a vector to be moved in the direction of the wheel attachment portion 13a is generated, and does not need to be continuously pulled. In the engaged state with the stopper plate 24, the bar engaging portion 37 of the lock plate 35 is engaged so as to press down the brake bar 25. On the side, the engagement state between the teeth 25a of the brake bar 25 and the teeth 16a of the rack 16 is released, so that the braking state is released and the movable base 10 can be slid.

On the other hand, when the moving base 10 is moved to an arbitrary desired position and the moving base 10 is stopped again, the second string 31 is pulled downward instead. Then, the brake bar 25 is pulled by the second string 31 and swings in a direction in which the rear side is lowered with the rotation shaft 26 as a base point. At the same time that the rear side of the brake bar 25 is lowered, the clockwise rotational force by the brake bar 25 to the lock plate 35 is eliminated, so that the lock plate 35 is counteracted by the rotational force due to its own weight and the pushing force when the brake bar 25 is lowered. Rotate clockwise. At the same time, the auxiliary sled 40 swings because it is pulled by the second string 31, and is released from the stopper plate 24. For example, the lock plate 35 is instantaneously displaced to the position shown in FIG.
Thus, the lock plate 35 is instantly unlocked by the operation of pulling the second string 31 downward. Next, when the second string 31 is released, the rear side of the brake bar 25 is moved upward by the biasing force of the coil spring 29, and the clockwise rotational force is again applied to the lock plate 35 against the rotational force due to the weight of the lock plate 35. As a result, the lock plate 35 rotates in the clockwise direction. At this time, it passes through the front surface without interfering with the stopper plate 24 and is displaced again to the state shown in FIGS. This state is a state in which the teeth 25a of the brake bar 25 are engaged with the teeth 16a of the rack 16, and the moving base 10 is braked again and cannot be slid and is held at that position.

The training apparatus 1 having such a configuration has the following effects.
(1) Since the moving base 10 can move smoothly by the wheel 15 and only needs to be pulled lightly downward when stopping at a desired position, it is optimal for those who train in the training device 1 Can be set quickly. Further, since the wheel 15 is guided by the guide groove 5, the movement base 10 does not fluctuate and the wheel can be prevented from being removed. Since a plurality of wheels 15 are also arranged on the top and bottom, stable movement without backlash is possible.
(2) Since the stop is performed not by friction but by the engagement relationship between the rack 16 and the brake bar 25, a strong force is not required, and the stop can be surely performed.
(3) In order to displace the braking bar 25 into two states of braking and non-braking, the first string 30 and the second string 31 can be simply pulled without continuing to pull or performing a special operation. Therefore, the operation is simple.
(4) Since the lock plate 35 performs a special movement of swinging in relation to the wheel mounting portion 13a at the same time as being rotated, it is possible to create a locked and unlocked state simply by rotating the lock plate 35. The brake bar 25 can be securely held in two positions without complicating the structure. Further, since the lock plate 35 can be rotated to take two positions, ie, a locked state and an unlocked state, the moving region is more compact than a similar member that moves linearly.
(5) When the lock plate 35 and the stopper plate 24 are engaged, the inclined surface 38A of the stopper engaging portion 38 and the inclined surface 24A of the stopper plate 24 are brought into contact with each other with an inclination such that the engagement state is further increased. In addition, when the lock plate 35 is engaged with the stopper plate 24, it is in a kind of biting state and is difficult to come off.
(6) When the first string 30 and the second string 31 are pulled, the lock plate 35 can be rotated counterclockwise by both its own weight and the pushing force when the brake bar 25 is pulled down. Since 35 is displaced very quickly, there is little time lag in operation.
(7) Each of the first string 30 and the second string 31 is located at a position separated from the pivot shaft 26 serving as a fulcrum. On the other hand, the teeth 25a of the braking bar 25 and the teeth 16a of the rack 16 are acting points. Since the engaging position is close to the rotating shaft 26, the lever can be engaged with a large force by the lever principle.

It should be noted that the present invention can be modified and embodied as follows.
In the above embodiment, the movement control unit of the training device 1 is realized, but other than the training device 1 may be used. Further, in the above description, the lock mechanism is used as the movement control means because the brake bar 25 is engaged with the rack 16, but it may be applied to other means other than the movement control means, for example, a switch turning-on / off means.
In the above embodiment, the action point is set on the front end side of the rotation shaft 26 serving as a fulcrum, and the power point is set on the rear end side. For example, the action point may be between the fulcrum and the force point.
In the above description, the braking position is taken at the position where the braking bar 25 is held by the action of the coil spring 29, but the non-braking position may be taken.
In the above, specific configurations, for example, the shapes of the brake bar 25, the lock plate 35, the stopper plate 24, and the like are merely examples, and other configurations may be used.
-Although the 1st string 30 and the 2nd string 31 were used as an operating member in the above, means other than these may be used. For example, you may comprise so that a rod-shaped member may be extended.
The auxiliary thread 40 may be used without being connected to the second string 31.
In the above description, the inclined surface 35A is formed on the extending portion 35b in order to swing the lock plate 35, but conversely (at the same time) an inclined surface or a chamfered portion is formed on the rail frame 4 side, and the lock plate 35 is formed here. When the is rotated, it may be brought into contact with and moved laterally.
The lock plate 35 can be operated like a kind of universal joint that swings in all directions of 360 degrees with respect to the rotation shaft 36. For example, the lock plate 35 can be moved only in the axial direction (thrust direction) of the rotation shaft 36. You may restrict | limit so that it may move. In short, it is only necessary that the lock plate 35 can move in the direction of the wheel mounting portion 13a by rotating and contacting the rail frame 4.
The counterclockwise rotation of the lock plate may be realized by a biasing means such as a spring.
-You may make it apply to apparatuses other than the training apparatus 1. FIG.
-Besides, it is free to implement in a mode that does not depart from the gist of the present invention.

  DESCRIPTION OF SYMBOLS 1 ... Training apparatus, 24 ... Stopper plate as rotation prevention member, 25 ... Brake bar as operation member, 35 ... Lock plate as lock member, 39 ... Eye bolt as rotation prevention release means, 40 ... Prevention of rotation Auxiliary thread as release means.

Claims (19)

An actuating member that reciprocates between a first movement position and a second movement position;
It is rotatably arranged adjacent to the actuating member, and engages with the actuating member at the first pivot position to hold the actuating member at the first moving position, and the second pivot position. A locking member that allows movement of the actuating member from the first movement position to the second movement position,
The lock member is applied with a force to move in the direction of the rotation prevention member when displaced from the second rotation position to the first rotation position, and the rotation prevention member at the first rotation position. Engaging with the rotation prevention member, and the engagement with the rotation prevention member is released by the operation of the rotation prevention release means. Lock mechanism.   The force that moves in the direction of the rotation preventing member interferes with an interference body that is disposed at a front position in the rotation direction of the lock member when displacing from the second rotation position to the first rotation position. The locking mechanism according to claim 1, wherein the force is generated by the above.   The lock mechanism according to claim 1 or 2, wherein the actuating member is urged by an urging means in the second moving position direction.   When the lock member is in the first rotation position, the rotation prevention release means is operated to release the engagement with the rotation prevention member, so that the lock member is disengaged from the first movement position direction. The lock mechanism according to claim 3, wherein the lock mechanism is pushed by the actuating member that is displaced in a second moving position direction to be displaced from the first turning position to the second turning position.   The lock member is displaced from the second rotation position to the first rotation position in synchronization with the operation member moving from the second movement position to the first movement position. The locking mechanism according to any one of claims 1 to 4.   6. The lock mechanism according to claim 1, wherein the lock member is displaced from the second rotation position toward the first rotation position by a moment of force around the rotation axis. .   The lock mechanism according to any one of claims 1 to 6, wherein an engagement maintaining means for maintaining an engagement state is formed at an engagement position between the lock member and the rotation preventing member.   The lock mechanism according to claim 1, wherein the operating member reciprocates along a vertical direction.   The lock mechanism according to claim 1, wherein the actuating member reciprocates between the first position and the second position with a fulcrum as a swing center.   The lock according to claim 1, wherein the operating member has a portion to which a load for moving to at least one of the first position and the second position is applied. mechanism.   The lock mechanism according to claim 10, wherein a drive transmission member connected to the operating member is connected to a portion to which the load is applied.   The lock mechanism according to claim 11, wherein the rotation preventing release means is coupled to the drive transmission member.   The drive transmission member has two types, that is, a first drive transmission member to which the rotation prevention release means is connected and a second drive transmission member to which the rotation prevention release means is not connected. The locking mechanism according to claim 12.   The lock mechanism according to claim 1, wherein the operating member and the lock member are mounted on one base.   15. The lock mechanism according to claim 14, wherein the base is placed on a support that supports the base, and the base is movable in a predetermined direction on the support.   16. The locking mechanism according to claim 15, further comprising guide means for allowing the base to move in a predetermined direction on the support.   17. The locking mechanism according to claim 15, wherein the operating member is engaged with the support at either the first moving position or the second moving position to move the supporting body along the longitudinal direction. A movement control mechanism characterized in that engagement means for disabling is provided.   The engaging means includes a first engaging body formed on one of the operating member and the support and a second engaging body formed on the other of the operating member or the support, The movement control mechanism according to claim 17, wherein the movement is disabled by meshing between the first engaging body and the second engaging body.   An apparatus equipped with the movement control mechanism according to claim 17 or 18.

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