JP6403955B2 - Locking device for the sliding door - Google Patents

Description

  The present invention relates to a locking device for a sliding door, and more particularly to a locking device configured to simplify an operation for locking.

  A general locking device for a sliding door uses a member called shrimp gold. This shrimp gold can be rotated and slid by a handle supported by the first rotating shaft and a second rotating shaft supported by a long hole provided at the end of the supporting portion of the handle. The second rotating shaft is biased by a spring in a direction approaching the first rotating shaft. In addition, when the 2nd rotating shaft slid against the urging | biasing of a spring, a long hole was comprised so that it might become an offset position (refer patent document 1). And the ring-shaped hook part was comprised in the front-end | tip of the latching member, and it was comprised so that this could be latched to a hook-shaped to-be-latched part.

Utility Model Registration No. 3179997

  Although the technique disclosed in Patent Document 1 is provided with a second locking member for locking the handle, the basic configuration thereof is as described above. Therefore, in order to lock the sliding door with this shrimp gold, a hook-like locked part is provided on the column side of the loading platform where the shrimp gold is installed, and on the side of the sliding door, A plate-shaped sandwiched portion having an appropriate area was provided. When the hook-like locked portion is locked by shrimp gold, the tilting of the swing door is suppressed by holding the clamped portion between the support body and the shrimp gold, and as a result, the swing door is engaged. It was to stop.

  However, in the configuration as described above, the operation for locking the sliding door with shrimp gold has been complicated. That is, first, the sliding door is raised and the sandwiched portion is arranged in the vicinity of the hook-shaped latched portion, and then the ring-shaped hooking portion at the distal end of the latch member is clamped while the sandwiched portion is sandwiched. It has been necessary to stabilize the locking by the locking member by hooking on the locking portion and operating the handle.

  Conversely, when releasing the locked state, the handle must be operated to relax the locked state, and then the ring-shaped hooking portion at the tip of the locking member must be detached from the hook-shaped locked portion. I had to.

  As described above, since the operation for locking is complicated, when it is necessary to frequently open and close the sliding door, the operation of the handle is omitted, and the ring-shaped hooking portion is hooked. In some cases, it was left in the state of being hooked on the part. Even in such a state, since the ring-shaped hooking portion is hooked on the hook-shaped locked portion, the sliding door can be temporarily fixed in a standing state. However, when the handle operation for stabilizing the final lock is not large, the handle portion is left in a state of protruding sideways from the side surface of the loading platform. For this reason, when the vehicle (truck) is driven as described above, the vehicle moves with the handle protruding, and there is a concern that it may come into contact with a pedestrian or an approaching object. It was. In order to dispel such concerns, the driver is required to check the steering wheel operation, but there has been no case of neglecting this.

  The present invention has been made in view of the above-described points, and the object of the present invention is to eliminate the incomplete locking state by simplifying the locking operation of the sliding door, and in the locked state. It is an object of the present invention to provide a locking device having a configuration in which a handle does not protrude.

  Therefore, the present invention provides a column that is erected on the loading platform, a sliding door that is disposed between the columns and opens and closes the loading platform, and a locked state that protrudes from the side edge of the sliding door. In the loading platform structure including a member, the locking device for the door is provided on the column and includes a locking member for locking the locked member, and the locking member is installed on the column. And a lifting member provided so as to be movable up and down inside the housing, and a push-up means for raising the lifting member, and the housing has a part of the lifting member disposed outside the housing. And a stopper formed by a lower edge of the opening, and the elevating member is disposed inside the housing. The main body to be placed and this main body The upper part of the main body is formed in a bowl shape, the hook-shaped tip is disposed downward, and the main body part is formed on the main body part, and a part of the main body part is projected from the opening of the housing. And a contact portion capable of contacting the stopper portion of the housing.

  According to the said structure, the raising / lowering member can be raised / lowered inside a housing, and when this raising / lowering member descend | falls, a hook-shaped latching protrusion latches the upper edge of the to-be-latched member to be locked. be able to. Moreover, in the state which raised the raising / lowering member, it can be stopped in the raised position by the contact part provided in the main-body part of a raising / lowering member contact | abutting to the stopper part of an opening part. In such a contact state, a part of the main body portion of the elevating member (a range on the side of the locking projection from the contact portion, hereinafter may be referred to as a protruding region) protrudes from the opening. Therefore, the lifting member can be dropped by pressing the protruding region and releasing the contact. Therefore, when the position where each part is to be installed is adjusted so that the protruding region can be pressed by the locked member of the sliding door, the loading platform is closed by the sliding door (that is, when the sliding door is raised). If the member to be locked is caused to collide with the protruding region, it can be locked without any other special operation.

  The push-up means in the above configuration is for raising the lowered / falling member to a predetermined position, and is operated to release the lock. Therefore, it is sufficient that the elevating member can be raised, and as a configuration therefor, in addition to using a drive device such as an air cylinder or an actuator, an operation handle that can be rotated about a specific position is used. can do.

  The elevating member in the invention having the above-described configuration can be configured such that the locking projection is urged in a direction protruding from the opening of the housing.

  According to the said structure, when a raising / lowering member raises, a latching protrusion can be guide | induced toward an opening part. As a result, the gap between the tip of the locking projection (the hook-shaped tip) and the surface of the locked member of the hooked door to be locked acts to increase the state of being firmly locked. Can be gradually relaxed. At the same time, the abutting portion formed on the main body portion of the elevating member is biased toward the stopper portion of the opening, and is guided so that the abutting portion can abut against the stopper portion. . In addition, when pressing the protrusion area | region of a main-body part, since the raising / lowering member retreats against the said urging | biasing, it becomes possible to release the said contact | abutting and to drop an raising / lowering member.

  Further, the elevating member in the invention having the above-described configuration may be configured to be urged with respect to both the direction in which the locking projection protrudes from the opening of the housing and the direction in which the inside of the housing descends.

  According to the said structure, since the direction of the urging | biasing with respect to a raising / lowering member acts also in the descent | fall direction of a raising / lowering member, it becomes possible to guide the said raising / lowering member to fall. That is, since the abutting portion of the main body is in a direction protruding from the opening, when the ascending portion rises to a predetermined position, it acts to maintain the abutting state of the abutting portion and When the region is pressed and retreats against the urging, the downward urging acts, so that the elevating member can be surely lowered. The urging force in the two directions may be applied by a single member, but a plurality of members may be used.

  Further, in each of the above inventions, the push-up means having the above-described structure is formed at the base portion disposed inside the housing and the tip of the base portion, and abuts the lower end of the lift member to guide the lift member upward. A guide portion; a grip portion that extends outward from the rear end of the base portion and can be gripped; and a shaft portion that serves as a fulcrum of rotation when the base portion is rotated by the grip portion. The housing may include a second opening formed by opening a region movable by a grip portion of the handle, and a restricting portion that restricts the position of the shaft portion. .

  According to the above configuration, when the operation is performed to raise the raising member, the operator holds the handle gripping portion and rotates it around the shaft portion. That is, since the base portion of the handle can be rotated with the shaft portion as a fulcrum, the guide portion is operated according to the rotation to raise the elevating member. At this time, the position where the base is to be rotated is within a range regulated by the regulation part of the housing, and is formed at the tip of the base by being pivoted at a predetermined position within the regulated range. The position of the lower end of the elevating / lowering member can be changed (moved upward) by changing the direction of the guiding portion while the guide can abut the lower end of the elevating / lowering member. In addition, by making a part of the main body of the elevating member always surrounded by the peripheral wall of the housing, the direction of the elevating member installed inside the housing does not change greatly, and an external force by the handle acts. Thus, it is possible to guide the elevating member upward.

  In this case, the guide portion of the handle in the above configuration includes an abutment region formed so as to be inclined or curved so that the distance from the shaft portion gradually increases toward the tip of the base portion, and the shaft It is preferable to configure so as to function as an eccentric cam when rotating around the portion.

  According to the above configuration, since the guide portion functions as an eccentric cam, by rotating the base portion around the shaft portion and the center, the position of the guide portion gradually increases while maintaining contact with the lower end of the elevating member. It can be moved upward.

  Further, in this type of invention, the restricting portion of the housing having the above-described structure is configured to rotate the moving portion allowing the guide portion of the handle to reach the lower end of the elevating member and the shaft portion of the handle. And a support region for supporting the shaft portion.

  According to the above configuration, an external force can be applied to the elevating member by moving the handle shaft portion to the support area and rotating the base portion. It can be kept away from the area. This is because when the lifting member is not raised, the base portion of the handle does not exist below the lifting member. That is, as described above, the elevating member is configured to fall when the locked member of the sliding door presses the main body portion, and therefore, the lower end of the elevating member does not collide with the base of the handle during the dropping. It is. In addition, since the handle is used to raise the elevating member, after the elevating member is raised, the grip portion of the handle should not protrude sideways, The grip portion can be suspended at a position displaced from the support region by moving the shaft portion along the axis. In addition, if it is set as the structure which makes a grip part side heavier than a base side from a shaft part as a boundary, it can be in the state which the grip part drooped by supporting the whole handle | steering-wheel by the said shaft part.

  Further, in each of the above-described inventions, the body portion of the lifting member having the above-described configuration is gradually reduced in thickness from the upper part to the lower end, and the abutment part is different in the wall thickness of the body part. It can be configured by boundaries.

  According to the above configuration, the abutting portion can be formed by adjusting the thickness dimension of the elevating member, and a part of the main body portion is opened while abutting the stopper portion by adjusting the thickness dimension. The projecting length when projecting from the part can also be adjusted. In addition, since a some contact part can be comprised by changing thickness in steps, the position of the raising / lowering member in a housing can be stopped in several steps.

  In this case, the thickness of the main body having the above-described configuration is divided into three stages, and the contact portion can be formed at two locations.

  According to the said structure, a raising / lowering member will be provided with the contact part for stopping at the time of a raise, and the contact part for stopping at the time of a fall. These two abutting portions exist in the upper and lower stages with respect to the ascending / descending direction of the elevating member, and when the upper abutting portion abuts against the stopper portion, the locking of the locked member of the sliding door is released. In this state, when the lower contact portion comes into contact with the stopper portion, the member to be locked is locked. When the lower member abuts against the stopper in the state where the member to be locked is locked, when the elevating member falls, the locking protrusion does not directly hit the member to be locked and Wear and the like can be avoided. Further, when the elevating member descends, the lower abutting portion comes into contact with the stopper portion and stops, thereby preventing the elevating member from descending indefinitely, and the guide portion provided at the base of the handle is always at the same position. It can be made to contact.

  According to the present invention, when the locking projection formed on the upper end of the elevating member descends (drops), the locked member of the sliding door is locked. Since the stop member presses a part of the main body of the elevating member, the member to be locked is locked against the locking device in the process of closing the loading platform by the turning door (raising the turning door). It is possible to easily avoid the state where the locking of the sliding door is not completed.

  In addition, when the push-up means is a driving device such as an air cylinder, there is no member projecting to the side of the vehicle. On the other hand, in the configuration using the handle, it is used only for raising the elevating member. Therefore, it does not protrude from the loading platform to the side during the locking operation. In particular, a shaft is provided at the base of the handle, and the housing is provided with a restricting portion that restricts the position of the shaft, so that it moves to a predetermined position only when the lifting member is raised (released). Therefore, when the elevating member is lowered (locked), it cannot function as a handle. Further, by making the handle grip side heavy, the handle grip portion can be suspended when the operator does not rotate the handle, so the handle protrudes from the loading platform in a state other than during operation. There is nothing.

It is explanatory drawing which shows embodiment of this invention. It is a perspective view which shows embodiment of this invention. It is explanatory drawing which shows the relationship between embodiment of this invention and a sliding door. It is IV-IV sectional drawing of FIG. It is explanatory drawing by the IV-IV cross section which shows the state of latch release. It is explanatory drawing by the IV-IV cross section which shows the operation | movement aspect of embodiment. It is explanatory drawing by the IV-IV cross section which shows the operation | movement aspect of embodiment. It is explanatory drawing by the IV-IV cross section which shows the operation | movement aspect of embodiment. It is explanatory drawing by the IV-IV cross section which shows the operation | movement aspect of embodiment. It is explanatory drawing by the IV-IV cross section which shows the operation | movement aspect of embodiment. It is explanatory drawing by the IV-IV cross section which shows the modification of embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing an outline of an embodiment of the present invention. As shown in this figure, the present embodiment is configured to include a housing 1, an elevating member 2 disposed inside the housing 1, and a handle (push-up means) 3. The housing 1 accommodates the elevating member 2 and the handle 3 and has a box shape as a whole so as to surround the periphery. An opening (first opening) 11 from which a part of the elevating member 2 can protrude is formed in the upper part of the box shape, and an opening (second opening) from which a part of the handle 3 can protrude from the lower part. ) 12 is formed. The lower end edge 11a of the first opening portion 11 functions as a stopper portion that stops the descent when the elevating member 2 partially abuts.

  The elevating member 2 includes a main body portion 21 accommodated inside the housing 1 and a locking projection 22 formed in a bowl shape at the upper end. The main body 21 is generally formed in a substantially rectangular parallelepiped and is loosely fitted in the internal space of the housing 1. Further, the thickness is changed stepwise, and with this change in thickness, abutments 23 and 24 are formed on the surface of the first opening 11 on the side facing the stopper portion 11a. ing. The upper contact portion (first contact portion) 23 is for stopping when the elevating member 2 is lowered, and the lower contact portion (second contact) 24 is for moving the elevating member. This is for limiting the descent in the raised state.

  On the other hand, the locking protrusion 22 is formed in a shape that is curved in a bowl shape, and its tip is downward. Therefore, the curved portion inner side 25 of the locking projection 22 is formed in a hook shape so that the locked member of the sliding door can be locked as will be described later. An engaging groove 26 is provided at the upper end of the locking projection so that one end of the compression spring 4 can be engaged. The other end of the compression spring 4 is supported by the upper wall surface portion 13 of the housing 1 and is interposed between the upper wall surface portion 13 and the locking protrusion 22 to urge the locking protrusion 23 in a predetermined direction. Is. The upper wall surface 13 of the housing 1 is provided with support means 14 for supporting the compression spring 4.

  The handle 3 includes a base portion 31 and a grip portion 32. The base portion 31 has a curved tip end surface, and a guide portion 33 that can contact the lower end of the elevating member 2 is formed. The grip portion 32 is continuous with the base portion 31, is provided on the opposite side to the guide portion 33, and is provided to greatly extend outward. In addition, a through hole 34 is provided in the base portion 31, and a shaft 35 is inserted into the through hole 34, so that the base portion 31 can be a fulcrum of rotation. The shaft portion 35 is inserted into the restricting portions 17 and 18 provided on the side wall portions 15 and 16 on the side of the housing 1, and the restricting portions are mounted by attaching washers 36a and 36b and pins 37a and 38 to both ends. 17 and 18 are movable.

  Note that notches 30a and 30b are provided on the rear end side of the base 31 of the handle 3 (the side continuous with the grip portion 32). The notches 30a and 30b are adapted to receive the engaging portions 10a and 10b projecting inwardly at the lower end of the housing 1, and the engaging portions 10a and 10b are engaged with the notches 30a and 30b. By doing so, rotation below the shaft part 35 (through hole 34) is restricted. The engaging portions 10a and 10b can be engaged with the notches 30a and 30b when the shaft portion 35 of the handle 3 moves most downward along the restricting portions 17 and 18.

  FIG. 2 shows a state in which the elevating member 2 and the handle 3 are accommodated inside the housing 1. As shown in FIG. 2, the elevating member 2 is in a state in which the locking projection 22 protrudes greatly from the housing 1, and a part of the main body portion 21 (above the second contact portion 24). ) Is located outward from the front side wall surface portion 19a located below the first opening 11 (is in a protruding state). On the other hand, the handle 3 is in a state in which the base portion 31 is pivotally supported by the shaft portion 35, and is rotatable about the shaft portion 35. Further, the shaft portion 35 passes through the inside of the restricting portions 17 and 18 so that the entire handle 3 can move along the restricting portions 17 and 18. The restricting portions 17 and 18 are composed of a long hole 17 elongated in the up-down direction and a long hole 18 in the front-rear direction. The long hole 17 in the up-down direction functions as a moving region, and the long hole 18 in the front-rear direction. Functions as a support region. That is, by moving the shaft portion 35 along the vertical hole 17 in the vertical direction, the base portion 31 can be moved in the vertical direction, and by moving from the upper end to the long hole 18 in the front-rear direction, the shaft portion 35 is The position to be rotated is specified by being supported.

  By the way, as shown in FIG. 3, the revolving door to be locked by the present embodiment protrudes from the side edge of the revolving door 6 with respect to the column 5 that is erected on the loading platform (not shown) of the vehicle. It is the structure installed so that the to-be-latched member 7 to contact | abut. Accordingly, the sliding door 6 is locked by the locking device 8 provided on the support column for the regulated member 7. Therefore, in the present embodiment, the locked member 7 is locked by the locking protrusion 22 protruding from the housing 1. As described above, the locking protrusion 22 has a tip that is curved like a bowl and faces downward, so that it can be locked by descending from the upper edge of the locked member 7.

  The state of locking will be described in more detail. 4 is a cross-sectional view taken along the line IV-IV in FIG. As shown in FIG. 4, when the elevating member 2 is lowered, the first contact portion 23 is in contact with the stopper portion 11 a configured by the lower end edge of the first opening of the housing 1. It has become. At this time, the front and back surfaces of the main body portion 21 of the elevating member 2 exist between the front side wall surface portion 19a and the flat side wall surface portion 19b of the housing 1, the position thereof is stabilized, and the upper locking projection 22 The position can be stabilized. That is, even when a force is applied in a direction in which the locked member 7 is released, the locking protrusion 22 is not changed (moved) by the external force, and the locked state is thereby maintained. Is. Furthermore, it will be urged | biased downward by the compression spring 4, and it also avoids that the raising / lowering member 2 raises by vibration etc.

  In the handle 3, the shaft portion 35 of the base portion 31 is positioned at the lower end of the movement region 17 of the restriction portions 17 and 18, and the guide portion 33 formed at the tip of the base portion 31 is lower than the lower end of the elevating member 2. It is supposed to exist below. Therefore, in this state, even if the raising / lowering member 2 descends, the base 31 of the handle 3 is not in contact with both. At this time, the long grip portion 32 is in a suspended state with its longitudinal direction up and down. Accordingly, a part of the handle 3 is larger than the housing 1 and does not protrude sideways. Note that the handle 3 of the present embodiment is in a state of being freely rotatable because the shaft portion 35 is inserted through the restricting portions 17 and 18. For this reason, it is also assumed that the gripping portion 32 is shaken due to vibration or the like during traveling and the tip portion protrudes laterally. Therefore, as described above, when the shaft portion 35 descends to the lowest position of the moving region 17 of the restricting portions 17 and 18, the engaging portions 10a and 10b provided at the lower end of the housing 1 are provided in the notches 30a and 30b. By engaging, the grip 32 can be prevented from projecting outward (see FIG. 1).

  Next, a case where the locked state is released will be described. FIG. 5 shows a state where the elevating member 2 in FIG. 4 is raised. As shown in FIG. 5, by raising the elevating member 2, the second abutting portion 24 provided on the main body portion 21 of the elevating member 2 abuts on the stopper portion 11 a of the first opening portion 11. The descent is restricted. At this time, the compression spring 4 urges the locking projection 22 in a direction to protrude outward, the locking projection 22 protrudes from the first opening 11 of the housing 1, and the lifting member 2 is entirely moved. It will be tilted. At the same time, the lower end portion 27 of the elevating member 2 comes into contact with the rear side wall surface portion 19b of the housing 1, thereby restricting the inclined state of the elevating member 2.

  Thus, when the elevating member 2 is sufficiently raised, the tip of the locking projection 22 is positioned above the upper edge of the locked member 7, so that the movement of the locked member 7 is blocked. There is no member, and the locking is released. Although the use form of the handle 3 will be described later, the handle 3 is used when the elevating member 2 is raised, and after the elevating member 2 is raised, the shaft portion 35 again becomes the regulating portion as shown in the figure. 17 to the lower end.

  In this state where the locking is released, the elevating member 2 is sufficiently raised, and the locking protrusion 22 is tilted so as to protrude. Therefore, the range above the second contact portion 24 in the main body portion 21 of the elevating member 2 is in a state of protruding from the front side wall surface portion 19a of the housing 1 (a protruding region is formed).

  Therefore, when the sliding door (locked member 7) is locked again, a portion (protruding region) where the main body portion 21 of the elevating member 2 protrudes is pressed by the locked member 7. If it is raised as usual so as to close the loading platform by the sliding door, the locked member 7 comes into contact with the front side wall surface portion 19a of the housing 1, so that the locked member 7 can be moved to that position. Thus, the protruding region of the main body 21 of the elevating member 2 is inevitably pressed. By this pressing, the elevating member 2 is displaced from the tilted state to the upright state, and is guided to the inside of the housing 1, so that the contact of the second contact portion 24 with the stopper portion 11a is released. It becomes. When the second abutting portion 24 is detached from the stopper portion 11a, the elevating member 2 falls, and the first abutting portion 23 comes into contact with the stopper portion 11a again, and the engaged member 7 is engaged. It will stop (see FIG. 4). When the elevating member 2 is dropped, it is forcedly lowered in addition to the natural fall by the urging force of the compression spring 4. Note that when the elevating member 2 falls, the handle 3 is already in the lower position, and therefore does not hinder the lowering. Further, the state after dropping (lowering) is as shown in FIG. 4, and the thickness of the main body 21 located above the first abutting portion 23 is determined between the front side wall surface portion 19a and the rear side wall surface portion 19b. Since it is larger than the gap, the first contact portion 23 does not drop (fall down) beyond the stopper portion 11a.

  Next, the operation | movement aspect of this embodiment is demonstrated. As described above, the state of being locked from the unlocked state is due to the drop of the elevating member 2, and here, the case where the elevating member is raised will be mainly described. The elevating member 2 is guided upward by the handle 3 and will be described together with the operation of the handle 3.

  The operation | movement aspect of this embodiment is shown in FIGS. Description will be made sequentially according to the state of the handle 3. First, as shown in FIG. 6, the handle 3 is moved upward. At this time, as described above, the shaft portion 35 provided on the base portion 31 of the handle 3 is movable along the restricting portions 17 and 18 of the housing 1, and therefore is moved upward along the movement region 17. is there. At this time, the operator can operate by gripping the grip portion 32 of the handle 3. Further, since the shaft portion 35 is freely rotatable inside the restricting portions 17 and 18, the grip portion 32 is rotated so as to have an appropriate angle (the angle in the figure is horizontal). This rotation is to prevent the guide portion 33 formed at the tip of the base portion 31 from coming into contact with the lower end portion 27 of the elevating member 2 and hindering the rise.

  Then, as shown in FIG. 7, by moving the shaft portion 35 to the upper end of the moving region 17, the shaft portion 35 can be further moved to the support region 18. As is clear from this figure, the guide portion 33 formed at the tip of the base portion 31 has a curved surface, and the distance from the center of the shaft portion 35 gradually changes. That is, it functions as an eccentric cam. Therefore, in order to arrange the guide part 33 below the lower end part 27 of the elevating member 2, the longitudinal direction of the grip part 32 is set to the horizontal direction as shown in the figure.

  In this state, as shown in FIG. 8, by moving the shaft portion 35 along the support region 19, a part of the surface of the guide portion 33 formed at the tip of the base portion 31 becomes the lower end portion 27 of the elevating member 2. It is made to contact. At this time, the longitudinal direction of the gripping portion 32 is in a horizontal state, but this state is not strict, and if it is placed almost on the side, the guide portion 33 and the lower end portion 27 come into contact with each other, so They will be guided to each other so that

  After the handle 3 is moved to the above state, the handle 3 is rotated around the shaft portion 35. As shown in FIG. 9, by rotating the handle 3, the guide portion 33 functions as an eccentric cam, and the lower end portion 27 of the elevating member 2 is gradually raised. At this time, the elevating member 2 follows the force for urging the locking projection 22 outward while resisting the urging by the compression spring 4 installed at the upper part thereof. In the illustrated state, since the second contact portion 24 has not yet risen beyond the stopper portion 11a, the elevating member 2 is maintained in an upright state.

  Further, by rotating the handle 3, the elevating member 2 is further raised, and when the second contact portion 24 moves above the stopper portion 11a, as shown in FIG. Due to the urging, the locking projection 22 protrudes from the housing 1, and at the same time, the elevating member 2 is inclined. In this state, the second contact portion 24 is prevented from being lowered by the stopper portion 11a, and the operation by the handle 3 is finished. Then, the handle 3 is lowered again in consideration of the subsequent locking. The lowering of the handle 3 moves the shaft portion 35 along the restricting portions 17 and 18 in the opposite direction.

  In addition, it is good also as a structure which naturally falls by the dead weight of the handle | steering-wheel 3 by inclining the lower edge part of the support area | region 18 slightly toward the movement area | region 17 among the control parts 17 and 18. FIG. Further, by increasing the weight on the side of the gripping portion 32 around the shaft portion 35, the longitudinal direction of the gripping portion 32 may be adjusted to be naturally up and down. As described above, after the operation of raising the elevating member 2 is completed, by using the action of gravity, the operator can move the handle 3 downward and the grip portion 32 vertically. Even when the restoration of the position of the handle 3 is forgotten, the locking operation can be performed.

  As described above, according to the present embodiment, the operation of the handle 3 is not necessary when the locked member 7 is locked in order to raise the sliding door 6 (close the loading platform). It can be locked very easily. Thereby, it can avoid that the locked state will be in an incomplete state. Further, since the locked state does not become incomplete, the state in which the handle 3 protrudes to the side of the vehicle is not maintained, and between the pedestrian and the approaching object during traveling, etc. There is no worry of contact.

  The embodiments of the present invention are as described above, but these embodiments show examples of the present invention, and the present invention is not limited to these embodiments. Therefore, it is possible to make the said embodiment into the aspect which deform | transformed. For example, in the above embodiment, the main body portion 21 of the elevating member 2 is provided with the two abutting portions 23 and 24. As is apparent from the above description, the first abutting portion 23 is formed by the elevating member 1. Since it functions as positioning when it is lowered, when it is configured to stop the lowering in a state where the locking projection 22 is in contact with the upper edge of the locked member 7, the first contact is made. There is no need to provide the portion 23. Similarly, since the thickness of the upper body portion 21 is larger than that of the first contact portion 23, the same effect can be obtained by forming the periphery of the first contact portion 23 in a tapered shape. Can be obtained. Furthermore, the urging | biasing with respect to the raising / lowering member 2 is two directions of the direction which descends the raising / lowering member 2, and the direction which protrudes the latching protrusion 22, In the said embodiment, this was made to act simultaneously by the single compression spring 4. However, two urging means for individually urging may be used. Furthermore, although the handle 3 has been exemplified as the push-up means, a driving device such as an air cylinder or an actuator may be used. In these cases, the operating side is propelled to raise the elevating member 2, and the elevating member 2 is operated to move backward after the elevating member 2 is raised.

  Moreover, about the attitude | position when raising the raising member 2, although the latching protrusion 22 protrudes from the opening part 11 of the housing 1, the raising / lowering member 2 may incline largely by that. Therefore, when the inclination angle is adjusted, as shown in FIG. 11, a protruding portion 28 may be provided on the back side of the lower end portion 27 of the elevating member 2. Since the projecting portion 28 abuts on the surface of the rear side wall surface portion 19b of the housing 1, the lower end portion 27 of the elevating member 2 can be brought close to the front side wall surface portion 19a, so that the inclined state of the elevating member 2 is relaxed. be able to. Thereby, even if it is a case where the change of the thickness for the 2nd contact part 24 is enlarged, it can adjust so that the raising / lowering member 2 may not incline largely. In addition, since the inclined state is relaxed, the lower end portion 27 can be arranged at a lower position, and the contact of the handle 3 with the guide portion 33 can be further ensured.

  Furthermore, the guide portion 33 formed on the base portion 31 of the handle 1 can be appropriately changed to a shape that makes the elevating member easy to rise. The modification is shown in FIG. As shown in this figure, a modified example of the guide portion 33 includes a curved surface portion 33a located on the back side, and two flat surface portions 33b and 33c having an L-shaped cross section on the opposite side of the curved surface portion 33a. Are combined to form a shape that partially protrudes. In the case of the shape shown in the figure, the lower end 27 of the elevating member 2 comes into contact with the two flat surfaces 33b and 33c at the beginning of the ascent. In this case, when the handle 3 is rotated so as to raise and lower the elevating member 2 in a state where both are in contact with each other, the contact portions of the two receive mutual reaction force toward the back side of the housing 1. Therefore, the contact state is not easily released (the position of the shaft portion 35 does not fluctuate). In addition, after the raising / lowering member 2 fully raises, the curved surface part 33a will contact | abut, and the raising / lowering member 2 can be maintained to predetermined | prescribed height like illustration.

DESCRIPTION OF SYMBOLS 1 Housing 2 Elevating member 3 Handle 4 Compression spring 5 Strut 6 Steering door 7 Locked member 10a, 10b Engagement part 11 First opening part 11a Stopper part 12 Second opening part 13 Upper wall surface part 14 Support means 15, 16 Side wall part 17 Restriction part (movement area)
18 Control part (support area)
19a Front side wall surface portion 19b Rear side wall surface portion 21 Lifting member main body portion 22 Locking projection 23 First abutting portion 24 Second abutting portion 25 Curved portion inner side 26 Engaging groove 27 Lower end portion 28 of the elevating member Projecting portion 30a 30b Notch 31 Handle base 32 Handle gripping part 33 Guide part 33a Curved part 33b, 33c Plane part 34 Through hole 35 Shaft part

Claims (8)

A loading platform structure comprising a column erected on the loading platform, a sliding door that is disposed between the columns and opens and closes the loading platform, and a locked member that protrudes from a side edge of the sliding door And a locking member for locking the hinged door through the locked member by locking the locked member that is installed on the support column and protrudes from the hinged door. A locking device for a sliding door,
The locking member includes a housing installed on the support column, an elevating member provided to be movable up and down inside the housing, and a push-up means for raising the elevating member,
The housing has a first opening formed by opening a part of a side surface so that a part of the elevating member can protrude outward from the housing at a position where the locked member abuts, and the opening. And a stopper portion formed by the lower edge of the
The elevating member has a main body portion disposed inside the housing and an upper portion of the main body portion formed in a bowl shape, and the hook-shaped tip is disposed downward and descends to be locked. A locking projection for locking the member from above, and a contact formed on the main body portion and capable of contacting a stopper portion of the housing while projecting a part of the main body portion from the opening of the housing in the raised state When the locked member comes into contact with the housing, the body of the elevating member protruding from the opening of the housing is guided to the inside of the housing, and the stopper portion comes into contact with the contact portion. locking device of tilt door, which is a shall then released.   The locking device according to claim 1, wherein the elevating member is biased in a direction in which the locking protrusion protrudes from the opening of the housing.   2. The locking device for a sliding door according to claim 1, wherein the elevating member is urged with respect to both a direction in which the locking protrusion protrudes from the opening of the housing and a direction in which the lifting member is lowered in the housing. The push-up means includes a base portion disposed inside the housing, a guide portion that is formed at a tip of the base portion, contacts the lower end of the lift member and guides the lift member upward, and a rear end of the base portion A handle that includes a grip portion that extends outward from the housing and can be gripped, and a shaft portion that serves as a fulcrum of rotation when the base portion is rotated by the grip portion,
The said housing is provided with the 2nd opening part which opens the area | region movable by the holding part of the said handle | steering-wheel, and the control part which controls the position of the said axial part. The locking device of the described sash door.   The guide portion of the handle includes an abutment region formed so as to be inclined or curved so that a distance from the shaft portion gradually increases toward a tip of the base portion, and rotates around the shaft portion. The locking device for a swivel door according to claim 4, which functions as an eccentric cam when moving.   The restricting portion of the housing includes a moving region that allows the guide portion of the handle to move to a position that reaches the lower end of the elevating member, and a support that supports the shaft portion for rotating the shaft portion of the handle. The locking device for a sliding door according to claim 4 or 5, further comprising a region.   The main body portion of the elevating member has a wall thickness that is gradually reduced from the upper portion toward the lower end, and the contact portion is configured by a boundary having a different wall thickness of the main body portion. The locking device of the sliding door in any one of 6 thru | or 6. The wall door locking device according to claim 7, wherein the wall thickness of the main body is divided into three stages, and the contact portion is formed at two locations.

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