WO2013012027A1

WO2013012027A1 - Support leg mechanism

Info

Publication number: WO2013012027A1
Application number: PCT/JP2012/068286
Authority: WO
Inventors: 鈴木　昌彦
Original assignee: Suzuki Masahiko
Priority date: 2011-07-20
Filing date: 2012-07-19
Publication date: 2013-01-24
Also published as: JPWO2013012027A1

Abstract

[Problem] This invention addresses the problem of developing a novel support leg mechanism in which it is possible to hold, in a stable manner, a sign or another object to be supported, even if the installation surface is uneven or otherwise irregular; and in which setting of leg sections can be performed with exceptional ease. [Solution] This support leg mechanism is characterized in comprising: a main body provided with an object to be supported; a movable body provided so as to be capable of sliding along the installation direction relative to the main body; and a plurality of movable legs connected individually and in a radial direction to the movable body via a one-way lock joint; the main body being provided with a stop position setting body for stopping the sliding of the movable body at an appropriate position; and, in supporting of the object to be supported, an allowance being made in discrepancies in the timing at which the movable legs come into contact with the ground, in the form of individual sliding actions of the one-way lock joints or a sliding action of the movable body relative to the main body, and the final fixation of the movable legs in contact with the ground being accomplished such that the movable body is brought into contact with the stop position setting body and the orientations of the movable legs are fixed in a single action.

Description

Support leg mechanism

The present invention relates to a support leg mechanism for stably holding various support objects such as a table (top plate) and a signboard in an appropriate posture, and in particular, the installation surface is inclined, stepped or uneven. Newly made it possible to hold the object to be supported stably even with irregular installation surfaces, and to set the legs for that purpose, for example, to adjust the height of each leg and the degree of opening. This relates to a support leg mechanism.

Support objects such as tables (tops) and signboards are often placed on a flat flat surface, but depending on the roadway conditions of the store and the installation surface (road surface), etc. Alternatively, it may have to be placed on an irregular installation surface such as an uneven surface, and a leg structure that can be stably installed in such a place has been devised (for example, Patent Document 1, 2). These are mainly methods in which a plurality of leg portions are formed so as to be stretchable and the length of each leg portion is appropriately adjusted by screws or the like, and the support object is maintained in an appropriate posture. is there.

Such a method (method of aligning the lengths of the legs individually) aligns the lengths of the legs one by one, so that, for example, the support object can be placed horizontally on any installation surface. Although it can be held (at first glance, it seems reasonable), the actual work is as much as the number of legs, in other words, the more legs, the more work is required to align the lengths. It took a great deal of time and effort. In addition, when using such a leg structure as a supporting structure for a work scaffold in construction work, etc., it may be necessary to move the scaffold once installed little by little as the work location moves. In that case, installation (placement) and removal must be repeated frequently, and each installation requires length adjustment (height adjustment) work and screwing work for each leg. It was annoying work.

Utility Model Publication No. 7-29298 Registered Utility Model No. 30229902

The present invention has been made by recognizing such a background. For example, a support object such as a table (top plate) can be stably installed even on an irregular installation surface such as a stepped ground, and a leg is provided. Develop a new support leg mechanism that can adjust (set) the legs with a very simple operation even when the number of parts is large or when installation and movement are repeated frequently. It is an attempt.

First, the support leg mechanism according to claim 1 is:
A main body having a target object to be supported;
A movable body that is slidably assembled along the installation direction with respect to the main body,
A plurality of movable legs that are individually and radially connected to the movable body via a one-way lock joint,
In a support leg mechanism that supports a support object in an appropriate posture,
The main body is provided with a start position setting body that starts sliding at an appropriate position along the installation direction of the movable body, and a stop position setting body that stops the sliding at an appropriate position.
In supporting the support object in an appropriate posture, only the operation of bringing the main body close to the installation surface while maintaining a desired posture is performed. At this time, the displacement of the contact timing of each movable leg is different between each one-way lock joint. Permitting as an individual sliding operation along the installation direction relative to the movable body or a sliding operation along the installation direction of the movable body relative to the main body,
The final fixing of the plurality of grounded movable legs is achieved by bringing the movable body into contact with and fixed to the stop position setting body so that each one of the movable legs and the movable body is locked in the one-way lock joint. While maintaining the ground contact state of the leg, the posture of the grounded movable leg is fixed at once by the movable body.

Further, the support leg mechanism according to claim 2 is in addition to the requirement according to claim 1,
With the approaching operation to the installation surface of the main body, the movable leg that is first grounded is the one in which the sliding part of the one-way lock joint is fixed to the movable body by the reaction force of grounding, As the main body is further moved closer to the installation surface, the movable leg is slid so as to approach the stop position setting body. The sliding part slides toward the stop position setting body, but when multiple movable legs are grounded, the sliding speed of the sliding part of each one-way lock joint toward the stop position setting body is the fastest. The movable portion is fixed to the movable portion, and the movable body is slid toward the stop position setting body.

Further, the support leg mechanism according to claim 3 is in addition to the requirement according to

claim

1 or 2,
The installation direction of the main body is a gravitational direction from above to below,
The movable body has the same number of rails set in the installation direction as the movable legs, and the sliding portion of the one-way lock joint is formed so as to slide along the rail.
Further, this rail is a T groove that forms a T-shape in plan view formed in the vertical direction on the side peripheral surface of the movable body,
In the one-way lock joint, a pair of wedges provided between the opening-side surface and the non-opening-side surface of the T-groove act on each other in the biting direction, thereby causing the pair of wedges to move in the groove width direction of the T-groove. The sliding part is pressed against the sliding part to prevent the sliding part from adhering to the rail, and the action of causing the pair of wedges to act on each other in the biting direction is the reaction when the movable leg contacts the installation surface. It is characterized by being actuated by force.

Further, the support leg mechanism according to claim 4 is in addition to the requirement according to

claim

1 or 2,
The installation direction of the main body is a gravitational direction from above to below,
The movable leg is formed to open and close radially at the lower end portion of the main body,
The movable body has the same number of rails set in the installation direction as the movable legs, and the sliding portion of the one-way lock joint is formed so as to slide along the rail.
Further, this rail is a T groove that forms a T-shape in plan view formed in the vertical direction on the side peripheral surface of the movable body,
The one-way lock joint is
A cam body that can be accommodated in the T-groove;
It is connected to the movable leg in the form of a link, and comprises a conductive portion that always makes the end on the opposite side of the movable leg abut on the non-opening surface of the T-groove rail,
Furthermore, the cam body always makes the rotating portion provided at the tip of the rotary action piece abut the surface of the T groove on the rail opening side and the surface on the rail non-opening side,
In addition, the cam body always makes the rotating action piece abut on the upper side of the conductive portion,
When fixing the cam body to the T-groove rail, the reaction force when the movable leg touches the installation surface is applied to the cam body via the conductive portion, and the cam body is stopped by stopping the rotation of the cam body. It is characterized by the fact that it is made to adhere to.

Further, the support leg mechanism according to claim 5 is in addition to the requirement according to

claim

3 or 4,
The groove width dimension between the surface on the rail opening side and the surface on the non-rail opening side of the T-groove rail is formed so that the interval is narrowed toward the upper side.

Further, the support leg mechanism according to claim 6 is in addition to the requirement according to

claim

1 or 2,
The installation direction of the main body is a gravitational direction from above to below,
Further, the movable body is formed by forming the same number of rod-shaped rails as the movable legs in the vertical direction of the side peripheral surface,
The movable leg includes a block fitted on the rail at the upper end portion, and the block is formed such that the hole diameter of the rail penetration hole is larger than the outer diameter of the rail.
The one-way lock joint tilts the block of the movable leg with respect to the rod-shaped rail by the reaction force when the movable leg comes into contact with the installation surface. And the movable leg is fixed to an appropriate position of the rail.

The support leg mechanism according to claim 7 is:
A support leg mechanism movable part that starts following by contact with the installation surface, follows a change in the relative positional relationship with the installation surface, and a plurality of movable legs that are activated and moved by contact with the installation surface,
A movable body that is connected to each movable leg and operates in conjunction with the movable position;
A one-way lock joint for connecting each movable leg to the movable body, and each movable leg is connected and equipped with the movable body, and the operation of the movable body is started at an arbitrary position. A main body including a start position setting body for stopping and a stop position setting body for stopping and fixing the operation at an arbitrary position;
A support leg mechanism comprising:
By following the change in the relative positional relationship, and by moving the support leg mechanism,
By activating each movable leg in contact with the installation surface,
The movable legs that have been brought into contact with each other are connected by the one-way lock joint,
Operate the movable body in conjunction with each movable leg that has been activated to contact,
The contact points of the movable legs that are in contact with each other by the movement that operates the support leg mechanism are the contact points with respect to the installation surface.
Maintained by the movement of each movable leg following the shape of the installation surface,
By each position of the connection made by the movable body and the one-way lock joint,
Maintaining the difference in the spatial coordinate position of the contact point of each movable leg due to the shape of the installation surface,
The movement of the movable body, which is performed in conjunction with transmission through a one-way lock joint that connects the movable legs to the movable body by a movement that operates the support leg mechanism,
By stopping with the stop position setting body set on the main body,
Each movable leg holds a contact point corresponding to the shape of the installation surface, and the operation parts are collectively stopped and fixed.
It is characterized in that it is supported in a contact support state in an arbitrary posture.
Here, the “support leg mechanism movable part” refers to a movable part such as a movable leg, a movable body, a one-way lock joint (including a conduction part and a sliding part), and the like.

The support leg mechanism according to claim 8 is:
A plurality of movable legs,
A movable body,
A one-way lock joint connecting the movable leg and the movable body;
A support leg mechanism comprising a main body having a stop position setting body for holding and fixing the movable body;
Support leg mechanism movable part that starts following by contact with the installation surface,
Follow the change in the relative positional relationship with the installation surface,
Prior to the end of the operation of the support leg mechanism, the plurality of movable legs are brought into contact with the installation surface,
The plurality of movable legs are connected to and interlocked with the movable body at the time of contact activation to the installation surface,
Operating the movable body on the main body in connection with a movable leg that moves by the follower;
When the movable body stops at the stop position setting body of the main body,
Stop all connected and moving parts at once,
End the operation of the support leg mechanism,
As a result, while maintaining the contact point to the installation surface of the plurality of movable legs,
The support leg mechanism is supported and fixed to the installation surface in an arbitrary posture.
Here, the “support leg mechanism movable part” refers to a movable part such as a movable leg, a movable body, a one-way lock joint (including a conduction part and a sliding part), and the like.

The above-described problems can be solved by using the configuration of the invention described in each of the claims.
First, according to the first, seventh, and eighth aspects of the invention, adjustment of the movable leg (height adjustment, adjustment of the opening degree, etc.) is not performed for each individual leg, and if it is a table, only this operation is performed. Since all the movable legs can be set at once, and the posture of the set movable legs can be held at once by the movable body, the setting can be performed very easily and in a short time.
For this reason, even when the number of leg portions is large, the setting (installation) does not take time and it is suitable for the case where it is not possible to spend time on the installation of the support object. Moreover, readjustment can be easily performed when the support object once installed is moved frequently.
Furthermore, the installation target surface may be an irregularly shaped irregular installation surface, and the installation direction is not necessarily limited to the direction of gravity, so installation on an indoor wall surface with a step, installation on a standing rock surface, etc. Alternatively, installation from a high place can be easily performed, and the degree of freedom in selecting a use place (installation place) is extremely high.

Further, according to the invention described in claim 2, a specific method for setting all the movable legs at once is made more realistic.

According to the invention of

claim

3, 4 or 6, the specific configuration of the one-way lock joint is made more realistic.

According to the fifth aspect of the present invention, the rail for sliding the sliding portion with respect to the movable body is formed as a T-groove, and the T-groove is formed narrower toward the upper side. When the wedge type is used for the joint, the groove with gradually changing width dimensions promotes the bite action of the wedge, so that the wedge can be fixed more reliably and a strong fixing force (supporting force) can be obtained. In addition, when releasing this sticking, the wedge biting action is easily released by the groove whose width dimension is gradually changed as described above.
In addition, when the cam method is used for the one-way lock joint, the groove structure as described above (a structure in which the groove width dimension becomes narrower toward the upper side) is essential, thereby realizing an extremely simple one-way lock joint. be able to.

It is the perspective view (a) which shows a mode that the support leg mechanism (Example 1) of this invention was applied to the table, and side sectional drawing (b) which expands and shows a one-way lock joint (sliding part). It is explanatory drawing which shows the operation | movement aspect in the case of mounting the support leg mechanism of Example 1 in a level | step difference place (irregular installation surface) in steps. FIG. 3 is an enlarged side view for explaining a locking mode (fixing mode of a sliding portion to a movable body) in the one-way lock joint according to the first embodiment. It is a three-view figure of the one-way lock joint part which shows a mode that it formed so that the T groove-shaped rail space | interval of Example 1 may become so narrow that it goes upwards, (a) is a front view (sectional drawing), (b) Is a side view (sectional view), and (c) is a plan view. It is explanatory drawing which shows that sliding speeds which the sliding part connected to each movable leg differ according to the open leg state of each movable leg (depending on the site | part of the circular-arc locus which the contact part of a movable leg draws). The perspective view (a) which shows a mode that the support leg mechanism (Example 2) of this invention was applied to the table, the perspective view (b) which expands and shows the mode of contact with a cam main body and a conduction part, and a cam It is a perspective view (c) which expands and shows a main part. In the support leg mechanism of Example 2, when the movable leg is ungrounded with respect to the installation surface, an explanatory view (a) showing the state of the one-way lock joint (cam body and conductive portion) as seen from the side, In addition, the partial cross-sectional view of the one-way lock joint (cam body and conductive portion) in the final fixed state (final support state) in which the movable leg contacts the installation surface and the movable leg reaches the stop position setting body, as viewed from the side. It is explanatory drawing (b) shown by. FIG. 10 is an explanatory diagram showing the rotation direction of line segments 62b′-62a ′ when the support leg mechanism of Example 2 is in a final fixed state (final support state). It is explanatory drawing which shows the operation | movement aspect in the case of mounting the support leg mechanism (Example 3) of this invention in a level | step difference place (irregular installation surface) in steps. It is explanatory drawing which shows a mode that the support leg mechanism (Example 3) of this invention was applied and the support target objects, such as a table, were installed diagonally with respect to the horizontal ground.

O support object S support leg mechanism 1 main body 2 movable body 3 movable leg 4 one way lock joint 5 one way lock joint (Example 1: wedge type)
6 One-way lock joint (Example 2: Cam system)
7 One-way lock joint (Embodiment 3: Swivel method)

1 Body 11 Start position setting body (Bottom dead center setting body)
12 Stop position setting body (top dead center setting body)

3 movable legs 31 connection point (rotation point with the main body 1)
32 Contact part (grounding part)

4 One-way lock joint 40 Sliding part 41 Rail 42 T-groove 42a Non-opening side surface (main body side surface)
42b Open side surface Tx Locking portion Ty Opening portion 43 Rod

44 Connection point (movable leg 3 and conductive part 51)
45 Connection point (conduction part 51 and cam part 52)
46 Connection point (cam portion 52 and lower wedge connection link 55)
47 Connection point (cam portion 52 and upper wedge connection link 53)
48 connection point (upper wedge link 53 and upper wedge 54)
49 connecting point (lower wedge connecting link 55 and lower wedge 56)

5 One-way lock joint (Example 1: wedge type)
51 Conducting portion 52 Cam portion 53 Upper wedge connecting link 54 Upper wedge 55 Lower wedge connecting link 56 Lower wedge

6 One-way lock joint (Example 2: Cam system)
61 Conducting part 61C Abutting part 61a Rail non-opening side contact point 62 Cam body 62a Rail non-opening side contact point (non-fixed)
62a 'Rail non-opening contact point (adhesion)
62b Rail opening side contact point (non-fixed)
62b 'Rail opening side contact point (adhesion)
62c Contact point between cam body and conductive part (non-adhered)
62c 'Contact point between cam body and conductive part (adhesion)
63 Rotating part 64 Rotating action piece

7 One-way lock joint (Embodiment 3: Swivel method)
71 blocks

The embodiment for carrying out the present invention includes one described in the following examples, and further includes various methods that can be improved within the technical idea.

The support leg mechanism S of the present invention supports a support object O such as a table (top plate) or a signboard in a stable state on an irregular installation surface such as a stepped area, an inclined area, or an uneven surface, for example. It is a mechanism suitable for.
The support leg mechanism S includes a main body 1 having a target support object O (an action member such as a table top or a signboard), and an installation direction with respect to the main body 1 (from the top to the bottom in the case of a table or the like). A movable body 2 slidably assembled along the direction of gravity), and a plurality of movable legs 3 individually and radially connected to the movable body 2 via a one-way lock joint 4. It is made up of.

Further, the main body 1 has a starting position setting body 11 (which becomes a bottom dead center setting body when a table or the like is placed in the gravity direction) that starts sliding along the installation direction of the movable body 2 at an appropriate position. A stop position setting body 12 (which becomes a top dead center setting body when a table or the like is placed in the direction of gravity) is provided to stop the sliding at an appropriate position.
The one-way lock joint 4 is a joint part that connects the movable body 2 and the movable leg 3, and a sliding portion 40 that slides the part individually with respect to the movable body 2 along the installation direction (for example, the direction of gravity). In addition, the sliding part 40 is fixed to the movable body 2 and has a locking function that prevents the sliding part 40 from sliding (substantial one-way locking function). The one-way lock means that the sliding portion 40 is slid in the approaching direction to the stop position setting body 12 in a state where the sliding portion 40 is fixed to the movable body 2 (in the direction of gravity when installed in the direction of gravity). This term is related to the fact that sliding is impossible.

In the present invention, the movable legs 3 are brought into contact with the installation surface sequentially or simultaneously only by the operation of bringing the main body 1 (supporting leg mechanism S) close to the installation surface while maintaining a desired posture (opposite approach). The main feature is that each movable leg 3 is in a state (posture) suitable for support, and a plurality of movable legs 3 set in this state (posture suitable for support) are fixed at once by a single movable body 2. It is. Some of the plurality of movable legs 3 may not come into contact with the installation surface depending on the unevenness of the installation surface, etc. (for example, the portion of the non-contact movable leg 3 may have a deep hole in the installation surface). As long as the object to be supported O can be stably supported by the remaining movable legs 3, such a situation may be generated. Of course, if the installation position of the stop position setting body 12 on the main body 1 is changed, the movable range of the movable leg 3 is changed. Therefore, the change of the position of the stop position setting body 12 causes the movable body 2 to contact the stop position setting body 12. At the time of contact, for example, all the movable legs 3 can be brought into contact with the installation surface.

In addition, as a method of fixing the sliding portion 40 to the movable body 2 (the lock function of the one-way lock joint 4), a wedge method (for example, a slide in the vertical direction) is stopped by a pair of wedges biting action ( There are a first embodiment), a cam system that stops by rotation of a cam member (second embodiment), and a free rod system (third embodiment) that stops by tilting a cross (here, a block 71 described later), which will be described below. . When it is desired to distinguish the one-way lock joint 4 according to each embodiment, the wedge-type one-way lock joint of the first embodiment is denoted by “5”, and the cam-type one-way lock joint of the second embodiment is denoted by “6”. ", And the one-way lock joint of the free rod method of the third embodiment is distinguished by attaching the symbol" 7 ".

Further, as described above, the installation target surface is not necessarily limited to the floor surface (ground), but may be installed on an indoor wall surface having a step, installation on a standing rock surface, or a high place. Although it is possible to install the apparatus in a more suspended state, in the embodiment described below, a support object O such as a table (top plate) is installed in the direction of gravity such as a floor surface (ground). That is, a plurality of support legs 3 are set by a normal operation of “place the table in the direction of gravity”. Further, in connection with this, the contact (landing) of the movable leg 3 with the installation target surface is mainly referred to as “grounding”. This is because various installation target surfaces and installation directions are assumed as described above. It means (including) contact with any installation target surface.
As for the installation surface, grounding (installation) to the irregular installation surface is preferable in terms of the structure of the present invention. However, since installation on a normal smooth surface (flat surface) is also possible, various types of description will be given in the following description. "Installation surface" is used to mean the surface.

[Example 1]
The first embodiment is a fixing method of the sliding portion 40 by the wedge method as described above, and the movable leg 3 is rotatable at the lower end portion of the main body 1 as shown in FIGS. (Can be closed leg freely). Here, reference numeral 31 in the figure is a connection point (rotation point) with the main body 1 in the movable leg 3. Naturally, the movable leg 3 is in a grounded state in contact with the installation surface, and the main body around the connection point 31. The support object O is supported by operating so as to open radially from one side. On the other hand, the movable leg 3 in a non-grounded state exhibits a closed state (a squeezed state) on the side of the main body 1 around the connection point 31. Further, reference numeral 32 in the drawing denotes a contact portion (ground portion) where the tip of the movable leg 3 contacts the installation surface.
Further, as shown in FIG. 1 as an example, the movable body 2 is formed in a cylindrical shape, and a main body 1 formed in a post (post) shape is located in a central circular hole portion. It is formed to be slidable (movable up and down).

Next, the one-way lock joint 5 in the first embodiment will be described. As shown in FIGS. 1 and 3 as an example, the one-way lock joint 5 according to the first embodiment includes a rail 41 formed in the movable body 2 (here, formed in a T-groove shape in a plan view), and a rail 41 A sliding portion 40 that slides along the sliding leg 40 and two link-like members that connect the sliding portion 40 to the movable leg 3. Is the conductive portion 51, and the one on the sliding portion 40 side is the cam portion 52. Further, a connection point between the movable leg 3 and the conduction part 51 is a connection point 44, and a connection point between the conduction part 51 and the cam part 52 is a connection point 45.
In addition, with such a configuration, the movable leg 3 and the sliding portion 40 are related to each other (operation), and the sliding portion 40 moves the movable body 2 (rail 41) along with the opening and closing of the movable leg 3. Specifically, the sliding portion 40 rises along the rail 41 as the movable leg 3 is largely opened (opened).
Hereinafter, the rail 41 and the sliding part 40 will be further described.

As an example, as shown in FIG. 4, the rail 41 is formed in a T shape in a plan view (a so-called T groove, which is denoted by a reference numeral “42”), and is open over the outer peripheral side of the movable body 2. The cam portion 52 is fitted in the T groove 42 so as to move up and down.
Here, the portion of the T-groove 42 that is in contact with the side of the “T” substantially serves to prevent the cam portion 52 fitted in the portion from coming off, so that this portion is used as the locking portion Tx of the T-groove 42. Further, the portion corresponding to the length of the T-groove 42, that is, the length of the "T" character is the opening Ty. Furthermore, when the T-groove 42 is viewed in, for example, the side cross-sectional views shown in FIGS. 1B and 3, surfaces formed on the inner side (inner peripheral side) and the outer side (outer peripheral side) of the locking portion Tx. Are a non-opening-side surface 42a and an opening-side surface 42b, respectively. Here, the “surface (42a) on the non-opening side” is also referred to as “surface on the main body side” in the sense that it is closer to the main body 1 than the surface 42b on the opening side in FIGS. The T-groove 42 (rail 41) can be formed, for example, by changing the plane view angle. In this case, the non-opening side surface (42a) may not necessarily be the main body side. This is referred to as a “non-opening side surface”.

Next, the sliding portion 40 will be described. This will be described together with the mechanism of the locking mechanism of the first embodiment.
In the first embodiment, a pair of wedges are provided in the groove width direction of the T groove 42 (locking portion Tx) formed in the vertical direction, in other words, between the non-opening side surface 42a and the opening side surface 42b. The wedge having the acute angle portion directed downward is referred to as an upper wedge 54, and the wedge having the acute angle portion directed upward is referred to as a lower wedge 56. Then, when stopping the opening operation of the movable leg 3, that is, the lifting operation of the sliding portion 40, this pair of wedges is operated in the biting direction, and the respective wedges are operated so as to expand each other in the groove width direction, That is, the upper wedge 54 is brought into pressure contact with the non-opening side surface 42a while the lower wedge 56 is brought into pressure contact with the opening side surface 42b to stop the sliding portion 40 from sliding (the sliding portion 40 is stopped by the rail 41). Is to be fixed to).

For this reason, the sliding portion 40 is connected to the other end side of the cam portion 52 connected to the conducting portion 51 (see FIG. 1B and FIG. 3). In the stop portion Tx), the upper wedge connecting link 53 is connected, and the lower wedge connecting link 55 is connected in an intermediate portion of the cam portion 52. The upper wedge 54 is connected to the upper wedge connection link 53, and the lower wedge 56 is connected to the lower wedge connection link 55.
Here, a connection point between the cam portion 52 and the lower wedge connection link 55 is a connection point 46, a connection point between the cam portion 52 and the upper wedge connection link 53 is a connection point 47, and the upper wedge connection link 53 and the upper wedge connection 54. A connection point between the lower wedge connection link 55 and the lower wedge 56 is a connection point 49.

It should be noted that the upper wedge 54 and the lower wedge 56 are naturally free of biting force when none of the movable legs 3 are in contact with the ground, and can slide up and down along the rail 41 (T-groove 42). Even in this state, the upper wedge 54 located on the non-opening side (here, close to the main body 1) of the T-groove 42 abuts the non-opening-side surface 42a on the side opposite to the lower wedge 56, and the T-groove 42 The lower wedge 56 positioned closer to the opening portion Ty is in a state where the opposite side to the upper wedge 54 is in contact with the opening-side surface 42b (in other words, a light contact state that allows sliding).
Then, when a certain movable leg 3 is grounded from such an ungrounded state, for example, as shown in FIG. 3, as shown in FIG. 3, the grounding reaction force, that is, the cam part 52 from the grounded movable leg 3 through the conductive part 51. An upward force is added to the. Since this force is input as turning force from the connection point 45 of the cam portion 52, the upper wedge 54 acts downwardly, that is, in the biting direction via the upper wedge connection link 53 in response to this force.
Further, the cam portion 52 rotates the connection point 46 upward about the connection point 47 on the upper wedge 54 side by the action of the upper wedge 54 in the biting direction. That is, the cam portion 52 causes the connection point 46 to act upward (clockwise in FIGS. 1B and 3) with the connection point 47 as the center. For this reason, the lower wedge is connected via the lower wedge connection link 55. 56 acts upward and the biting with the upper wedge 54 is further strengthened.

The sliding portion 40 is locked (fixed) to the rail 41 (T-groove 42) of the movable body 2 by the biting action of the pair of wedges, and after the locking, the sliding of the movable leg 3 is performed. The movable body 2 also rises as the portion 40 rises, and this integral raising operation is an image in which the movable body 2 rises by being pulled by the sliding portion 40 locked to this.
In this specification, the first grounded one (the grounded one) of the plurality of movable legs 3 is referred to as a “1st ground leg” in the present specification. Similarly, the movable leg 3 to be grounded second and later is “2nd”. "Grounding leg", "3rd grounding leg", "4th grounding leg", and so on.

Further, the first grounding leg is gradually opened while maintaining the contact state with the installation surface as the main body 1 descends after the grounding to the installation surface (after contact) (the installation surface is shown in FIG. 2). When the second movable leg 3 contacts the installation surface (when the 2nd ground leg appears), the sliding portion 40 connected to the first ground leg, Among the sliding parts 40 connected to the 2nd grounding leg, the one having a high ascending speed (speed toward the stop position setting body 12) is fixed to the movable body 2 to raise the movable body 2. For this reason, in the case of the present embodiment, for example, if the rising speed of the sliding part 40 connected to the 2nd grounding leg is faster than the sliding part 40 connected to the 1st grounding leg, when the 2nd grounding leg appears, The movable body 2 is fixed to the sliding portion 40 connected to the 2nd grounding leg, and the fixing to the sliding portion 40 connected to the first grounding leg is released. In addition, even when there are three or more movable legs 3 that are grounded on the installation surface, the movable body 2 is fixed to the sliding portion 40 having the fastest rising speed, and rises integrally with the sliding portion 40. It is.

Next, it will be described that when the plurality of movable legs 3 are in a grounded state, the sliding speed (rising speed) of each sliding portion 40 is different. Here, as in the case of a normal chair or table, the lengths of the movable legs 3 are assumed to be the same, but the lengths of the movable legs 3 are not necessarily set to the same length.
As an example, as shown in the simplified diagram of FIG. 5, the movable leg 3 rotates around the connection point 31. In particular, here, the contact portion 32 is assumed to be the tip of the movable leg 3. The arc-shaped locus drawn by this point becomes the locus of the contact point. This trajectory (the arc-shaped trajectory drawn by the contact portion 32) is a circle (vertical circle) centered on the connection point 31.

Here, the circle drawn by the contact portion 32 is located at a position that is almost the same height as the connection point 31 that is the center of the circle (near the equator when compared to the earth) and the lowest point from the center of the circle (connection point 31). Think of it as a location (near the South Pole when compared to the Earth). Since the movement of the contact portion 32 in each part is considered to be a tangential direction on the arc, the contact portion 32 is moved (moved) almost directly above the equator near the center. On the other hand, in the vicinity of the south pole at the lowest point from the center, the contact portion 32 mainly moves in the left-right direction away from the main body 1, and the movement (movement) toward the top is smaller than that near the equator (extremely high). Less).

The amount of movement of the contact portion 32 in the vertical direction (the amount of movement per unit time) at each part corresponds to the amount of movement of the connecting point 45 per unit time, that is, the speed of the sliding portion 40. The ascending speed of the sliding portion 40 connected to the movable leg 3 varies depending on the height difference with respect to the connecting point 31 at the rotation center.
The connection point 45 is one end of the conductive portion 51, and the movement is related to the connection point 44 that is originally the other end portion. In other words, it may seem at first glance that the movement of the connecting point 45 is directly associated with the contact portion 32. However, since the connection point 44 can be considered as a point on the movable leg 3 and is considered to perform a circular motion similarly to the contact portion 32 (the radius is small), the movement of the connection point 45 is the motion of the contact portion 32. It is reasonable to associate

As described above, the movable leg 3 has the sliding portion 40 connected to the movable leg 3 depending on how much the height difference with respect to the connection point 31 that is the center of rotation of the movable leg 3 when grounded. The rising speed is different. The height difference with respect to the connection point 31 is also caused by a swing (falling) when the support leg mechanism S (main body 1) is approached when setting the support object O. However, the ascending speed of the sliding portion 40 is different.

For this reason, for example, if the ascending speed of the sliding portion 40 on the 2nd grounding leg side is faster than the sliding part 40 on the 1st grounding leg side, the movable body 2 is placed on the 2nd grounding leg side when the 2nd grounding leg appears. It adheres to the sliding part 40 and is fixed to the sliding part 40 on the 1st grounding leg side. In releasing this sticking, the rising speed of the sliding portion 40 on the side of the first grounding leg that was fixed to the movable body 2 and lifted integrally until the 2nd grounding leg first appeared (the rising speed seen from the installation surface). ) Is slower than the sliding part 40 on the 2nd grounding leg side, and when the sliding part 40 on the 1st grounding leg side is viewed from the movable body 2 after the appearance of the 2nd grounding leg, the sliding part 40 is movable body. Since the movement is relatively descending from 2 (relative separation), the pair of wedges (54, 56) that have acted in the biting direction will act in the non-biting direction (separation direction). The pressure contact is released. Specifically, the pressure contact that has acted on the non-opening side surface 42a of the upper wedge 54 and the pressure contact that has acted on the opening side surface 42b of the lower wedge 56 are released, and the 1st grounding leg side The sticking to the movable body 2 by the sliding portion 40 is released.
Note that the sliding portion 40 on the first grounding leg side slides on the rail 41 while being in contact with the rail 41 (T groove 42) even after the fixation with the movable body 2 is released. Incidentally, when the operation is viewed from the installation surface, the sliding portion 40 on the first grounding leg side is rising, but the moving body 2 fixed to the sliding portion 40 on the 2nd grounding leg side has a high ascending speed. In addition, when viewed from the movable body 2, it is an operation that moves away (lowers) relatively (an operation that scrapes off).

Further, in this embodiment, after the appearance of the 1st grounding leg, the 1st grounding leg gradually opens while continuing contact (grounding) with the installation surface (the contact position is the opening of the movable leg 3). It goes with the legs). During this time, the movable body 2 remains substantially stationary in the air without substantially changing the height viewed from the installation surface. Of course, even after the appearance of the 1st grounding leg, the main body 1 continues to descend until it comes into contact with the stop position setting body 12, so that when viewed from the main body 1, the movable body 2 moves relatively upward.
As described above, since the movable body 2 remains substantially stationary as seen from the installation surface after the appearance of the 1st grounding leg, the main body 1 continues to descend further in search of the grounding of the non-grounded movable leg 3. It is something that can be done. Moreover, each movable leg 3 (contact part 32) is contacted to each grounding point which has a height difference by this (it can be said that it has a three-dimensional coordinate difference because it assumes the height difference) ( Can be grounded).
In other words, in the present invention, the movable body 2 is slidable in the vertical direction (installation direction) with respect to the main body 1, and the sliding portion 40 (one-way lock joint 4) is vertical with respect to the movable body 2 (installation direction). ) Is allowed to slide as a sliding operation of the movable body 2 and the sliding portion 40.

Here, in the above description, after the appearance of the first grounding leg, the movable body 2 viewed from the installation surface is described as “almost stationary” (although “almost” is attached), but this is the movable leg 3 (the first grounding leg). This is because the movable body 2 slightly moves in the vertical direction (installation direction) as the main body 1 descends as the main body 1 descends after being grounded to the installation surface.
In other words, after the appearance of the 1st grounding leg, the 1st grounding leg (movable leg 3) whose leg does not open (for example, Example 3 to be described later), the movable body 2 is completely stationary in the air when viewed from the installation surface. (There is no vertical displacement).
In other words, as shown in FIG. 5, the movement of the contact portion 32 that makes a circular movement (a circular movement around the connection point 31) is a horizontal movement away from the main body 1 when viewed from the main body 1. In this case, the movable body 2 is stationary with respect to the installation surface when only the vertical movement of the contact portion 32 is captured. The movable body 2 moves up and down by the amount moved in the left and right direction.
Incidentally, from the viewpoint of absorbing the ground contact timing deviation of each movable leg 3, the concept of “moving” or “substantially stationary” the movable body 2 viewed from the installation surface after the appearance of the 1st grounding leg is extremely remarkable. It is a periodical idea (attention), and makes the technical idea of displacement absorption extremely easy to understand.

When the movable body 2 fixed to the sliding portion 40 having the fastest rising speed comes into contact with the stop position setting body 12, other sliding portions 40 that are not fixed are also fixed to the movable body 2 at once. (The fixing position varies depending on the height difference of the grounding position), and this is forcibly stopped relative to the movable body 2 (relative to the main body 1), while the movable leg of the sliding portion 40 that is not fixed. This is because only 3 rises with respect to the movable body 2. By thus contacting the movable body 2 and the stop position setting body 12, the relative speed of the movable body 2 with respect to the main body 1 is forcibly set to 0. All the grounded movable legs 3 are fixed to the movable body 2 at once, and thereby the support object O can be stably supported.

The support leg mechanism S according to the first embodiment has the basic structure as described above. Hereinafter, an operation mode of the support leg mechanism S will be described.
Here, it is assumed that the installation surface is stepped and the plurality of movable legs 3 are not grounded at the same time.
(1) Initial state in which all movable legs are not grounded (FIG. 2 (a))
In this initial state, the movable body 2 is first brought into contact with the starting position setting body (bottom dead center setting body) 11 and the downward movement of the movable body 2 from the starting position setting body 11 is prevented (limited). is there. In this initial state, all the sliding portions 40 are set at the uppermost end portion of the rail 41.
Note that the support leg mechanism S shown in the perspective view of FIG. 1 (a) is entirely open when viewed from the movable leg 3, as if it were in a final fixed state (final support state). On the other hand, the sliding portion 40 is all located near the upper end of the rail 41, and the movable body 2 is in contact with the starting position setting body 11. From this point, FIG. It seems to be a state (or a state very close to this), and at first glance, it seems that both situations do not match. However, this is because FIG. 1A is a perspective view showing the support leg mechanism S, and is mainly for showing the structure and mechanism of the support leg mechanism S in an easy-to-understand manner (the situation seems to be different at first glance). Even if it looks like this, it does not make a mistake in the structure of the present invention). This also applies to the perspective view shown in FIG.

Incidentally, in this initial state, it is preferable to regulate the angle formed by the movable leg 3 and the conductive portion 51 with a stopper or the like, so that the sliding portion 40 when not in contact with the ground can be moved to the movable body 2 (rail 41). Adherence can be reliably avoided.
In other words, in the absence of the stopper, since the conductive portion 51 tends to fall down so as to gather on the central body 1 side, the sliding portion 40 hits the rail 41 slightly stronger, and the sliding portion 40 can smoothly slide. It is possible that there is not.
However, in the case of the present embodiment, since the sliding portion 40 (here, including the cam portion 52) is composed of a plurality of members, the total weight (total mass) is naturally heavier than the conductive portion 51, The sliding part 40 tends to always fall naturally in the rail 41 (T groove 42) by its own weight. Therefore, the phenomenon that the sliding portion 40 becomes difficult to slide due to the fall of the conductive portion 51 can be naturally avoided without providing the above-described stopper.

Note that the locking portion Tx of the T groove 42 does not necessarily have to be formed with the same groove width dimension in the vertical direction. For example, as shown in FIG. 4, the groove width dimension, that is, the non-opening side surface 42a and the opening side. It is possible to gradually reduce the distance between the surface 42b and the surface 42b. In this case, since the tendency of the sliding part 40 to fall naturally increases as described above, the conduction part 51 falls down. This makes it easier to avoid the phenomenon that the sliding portion 40 becomes difficult to slide. Incidentally, the structure in which the groove width dimension of the T-groove 42 is gradually narrowed toward the upper side has an advantage that it can be easily released even when the fixed state of the pair of wedges (54, 56) that have bitten each other is released.
As a matter of course, as shown in FIG. 2 (a), even when the main body 1 (the entire support leg mechanism S) including the support object O is lowered, no movable leg 3 is in contact with the ground ( In the initial state), the movable body 2 remains in contact with the starting position setting body 11, and the sliding portions 40 are all located at the uppermost end portion of the rail 41.

(2) Appearance of the 1st grounding leg When the main body 1 is gradually lowered from such a state, the first movable leg 3 comes into contact with the ground (the 1st grounding leg appears). Since the rotational force is transmitted to the cam portion 52 through the conductive portion 51 as described above, the sliding portion 40 is fixed to the rail 41 (T groove 42) (expresses a locked state).
Further, after the appearance of the 1st grounding leg, as the main body 1 is further lowered, the 1st grounding leg gradually opens while maintaining a contact state with the installation surface, and the movable body 2 is fixed. As it is integrated with the sliding portion 40 and pulled, it rises relative to the main body 1 and moves away from the starting position setting body 11 (this state is shown in FIG. 2B). . Here, “relative” is described as described above, after the appearance of the first ground contact leg, the movable body 2 does not substantially lower (almost stationary) and the main body 1 mainly descends from the installation surface. To go.

Under such circumstances, the sliding portion 40 itself connected to the ungrounded movable leg 3 located on the left side of FIG. 2B, for example, moves the movable body 2 (rail 41) because the movable leg 3 is not grounded. Although it does not move actively, since the movable body 2 rises relatively, when viewed from the movable body 2, the sliding portion 40 gradually moves the rail 41 as shown in FIG. It becomes a motion to rub down.

(3) Appearance of 2nd grounding leg Then, as the main body 1 is further lowered, the second movable leg 3 is grounded (a 2nd grounding leg appears), and this movable leg 3 is also conducted by grounding. Since the rotational force is transmitted to the cam portion 52 via the portion 51, it tries to slide (raise) toward the stop position setting body 12. In this case, the movable body 2 itself has already been grounded for the first time as described above. Since it is raised integrally with the leg sliding portion 40 (relatively rising with respect to the main body 1), fixation does not always occur.
That is, when the plurality of movable legs 3 are grounded, as described above, the movable body 2 is fixed to the one having the fastest rising speed of the sliding portion 40, and the movable body 2 is fixed to the fixed sliding portion 40. It rises integrally.
For this reason, for example, even if a 2nd grounding leg appears, if the ascending speed of the sliding part 40 connected thereto is slower than the ascending speed of the sliding part 40 of the 1st grounding leg, the movable body 2 becomes the 1st grounding leg. Ascending (relatively rising) without adhering to the sliding portion 40 of the 2nd grounding leg while continuing to adhere to the sliding portion 40. Of course, if the rising speed of the sliding part 40 of the 2nd grounding leg is higher than the rising speed of the sliding part 40 of the 1st grounding leg, the movable body 2 is fixed to the sliding part 40 of the 2nd grounding leg (that is, the 1st grounding leg). ) Is lifted (relatively lifted).

(4) Contact between the movable body and the stop position setting body (final fixed state)
Thereafter, as the main body 1 is further lowered, normally, all the movable legs 3 are in a grounded state. During this time, the grounded movable legs 3 gradually expand. Of course, since the moving part 2 is fixed to the moving part 2 because the rising speed of the sliding part 40 is the fastest. 2 is an operation of rubbing down.
Thereafter, as shown in FIG. 2C, when the movable body 2 comes into contact with the stop position setting body 12, all the sliding portions 40 are fixed to the movable body 2 at once, and all the movable legs 3 that are grounded are It is fixed in each posture (appropriate posture according to the difference in height of the installation surface). In this specification, this state, that is, the state in which the movable body 2 is in contact with the stop position setting body 12 and all the sliding portions 40 are fixed to the movable body 2 at once is referred to as a final fixed state or a final support state. It is what we call.

In the above description, all the movable legs 3 are grounded once and then spread while maintaining a contact state with the installation surface as the main body 1 further descends. This is because the installation surface on which each movable leg 3 lands is assumed to be flat although there is a difference in height. Therefore, in a situation where holes are opened in each of the installation surfaces, contact with the installation surface is interrupted and lowered when the movable leg 3 reaches the hole when the movable leg 3 expands even if it is grounded. Then, the mode of contact by grounding again is repeated.
In the above description, it is assumed that the movable leg 3 only rotates in the vertical direction. However, if the movable leg 3 is formed so as to be movable in the circumferential direction of the main body 1, for example, the movable leg 3 is used. By slightly rotating the body around the main body 1, it is possible to select and ground a part with relatively little unevenness even on the same installation surface, and the convenience of the support leg mechanism S can be further improved. is there.

As described above, the groove width dimension of the T groove 42 (locking portion Tx) can be gradually narrowed toward the upper side (see FIG. 4). 56), the sticking action (sticking of the sliding portion 40 to the movable body 2) can be further strengthened. Further, by this, in the final fixed state (final support state) where the movable body 2 reaches the stop position setting body 12, a stronger support force can be obtained.
Furthermore, once the table placed on the installation surface in the final fixed state is lifted, a pair of T-grooves 42 (locking portions Tx) are formed as shown in FIG. The wedges (54, 56) can be easily dropped downward by their own weight (that is, the fixed state is easily released), and greatly contribute to improvement in workability particularly when the table is moved frequently.

[Example 2]
Next, Example 2 will be described. In the second embodiment, as described above, as a method of fixing the sliding portion 40 to the movable body 2 (the lock function of the one-way lock joint 6), the slide of the sliding portion 40 (in other words, the vertical slide in the vertical direction) is changed to a cam member. This is a cam system that stops by rotating.
That is, in the first embodiment, as described above, a pair of wedges (54, 56) are bitten between the grooves (locking portions Tx) of the rail 41 (T groove 42), so that the wedges are moved in the groove width direction (locking portions). The sliding portion 40 (wedge) is fixed to the rail by press-contacting to Tx) (in other words, expanding in the lateral direction).
In contrast, in the second embodiment, the longitudinal movement of the sliding portion 40 is converted into rotation, and by stopping this rotation, the sliding portion 40 is prevented from moving in the vertical direction and fixed to the rail 41 ( Concept).

For this reason, the one-way lock joint 6 and the sliding part 40 of Example 2 are different from Example 1, and these are demonstrated below.
The one-way lock joint 6 of the second embodiment has a very simple structure including a conductive portion 61 and a cam body 62 as shown in FIGS. 6 and 7, for example, and these are always set in a contact state ( (Not connected). Here, the conductive portion 61 is provided in a contact state on the lower side of the cam main body 62, and this is a configuration for causing the conductive portion 61 to prevent rotation of the cam main body 62 in the sticking release direction.
The rail 41 is a T-groove 42 similar to that of the first embodiment, but the interval between the locking portions Tx (groove width dimension), that is, the interval between the non-opening side surface 42a and the opening side surface 42b is upward. It is formed to become narrower as it goes (see FIG. 4).
Moreover, the sliding part 40 is comprised by the head part (contact part 61C mentioned later) and the cam main body 62 of the conduction part 61 on such a structure. Hereinafter, the conductive portion 61 and the cam body 62 will be further described.

6 and 7, one end of the conductive portion 61 is connected to the movable leg 3, and the connection point between the movable leg 3 and the conductive portion 61 is a connection point 44 (similar to the first embodiment). . However, the other end side (the other end side) of the conductive portion 61 is accommodated so as to always abut on the non-opening side surface 42a of the T-groove-shaped rail 41 as illustrated (rail non-opening side contact point described later). 61a), this portion of the end portion is a contact portion 61C in the conduction portion 61. Here, as an example, as shown in FIG. 7, the contact portion 61C has a substantially arc shape in a cross-sectional side view. Is formed. Further, as described above, the contact portion 61C is provided so as to always contact the cam body 62 (a contact point 62c between the cam and the conductive portion described later).

Next, the cam body 62 will be described. As shown in FIGS. 6 and 7, the cam body 62 includes a rotating portion 63 at the tip of the rotating action piece 64, and the rotating portion 63 is always in the locking portion Tx of the rail 41 (T groove 42). It is accommodated so as to always contact the non-opening side surface 42a and the open side surface 42b of the T-groove 42 (locking portion Tx) (rail non-opening side contact point 62a and rail opening side described later) Contact point 62b).
Also, for this reason, in this embodiment, the rotating portion 63 is formed in a horizontally long substantially long cylindrical shape (a shape that fits within the locking portion Tx of the T groove 42), for example, as shown in FIG. The rotation action piece 64 is also provided so as to appear outside the movable body 2 from the opening Ty of the T groove 42.
In the second embodiment, the cam main body 62 (rotating portion 63) does not enter the T groove 42 (locking portion Tx) that becomes gradually narrower as it goes upward. The locked state (fixed state) of the first embodiment may be somewhat different, but in this specification, the locked state of the second embodiment is also referred to as “fixed”.

Here, the contact points described above will be organized.
For example, FIG. 7A shows a state where the movable leg 3 is not yet grounded, and FIG. 7B shows a sliding portion 40 (cam body 62) corresponding to (connected to) the movable leg 3 grounded. ) Shows a final fixed state (final support state) fixed to the movable body 2 (rail 41), and the above-mentioned contact point always exists in any situation, but FIG. 7A and FIG. In (b), the position changes. First, each contact point is defined again in FIG. 7 (a).
The rotating portion 63 of the cam main body 62 is always in contact with the rail non-opening side 42a and the rail opening side 42b, which are respectively referred to as “(cam) rail non-opening side contact point 62a” and “(cam)”. Rail contact side contact point 62b ". Further, the rotation action piece 64 of the cam main body 62 is always in contact with the conduction portion 61 (contact portion 61C), and this point is referred to as a “contact point 62c between the cam and the conduction portion”.
The contact portion 61C of the conductive portion 61 is always in contact with the rail non-opening side 42a, and this point is referred to as a “(non-conductive) rail non-opening side contact point 61a”.
Since the positions of these four contact points change in the final fixed state shown in FIG. 7B as described above, each point in FIG. 7B is referred to as “(cam) rail non-opening side contact point 62a. ''(Cam's) rail opening side contact point 62b '', 'cam and conduction part contact point 62c'"((conduction part) rail non-opening side contact point 61a '"').

The transition from FIG. 7A to FIG. 7B is an operation change in which the movable leg 3 is changed from the ungrounded state to the grounded state. (After the appearance of the 1st grounding leg, the movable body 2 is almost stationary as viewed from the installation surface).
Due to the relative rise of the movable body 2, the cam body 62 at the position shown in FIG. 7A rotates while falling downward with a wide groove width. Here, the reason why the falling cam body 62 is rotated is that the lower part of the rotating action piece 64 (the opposite side of the rotating part 63) is in contact with the conducting part 61.
Further, in the transition from FIG. 7A to FIG. 7B, the conductive portion 61 keeps coming into contact with the cam body 62 from the lower side (acts so as to prevent the cam body 62 from dropping). This is because an upward force acts on the cam main body 62 from the movable leg 3 through the conductive portion 61 in FIG. In this way, the cam main body 62 rotates while dropping so as to be closer to the conductive portion 61 (that is, to reduce the distance between the

contact points

62a and 61a) in FIG. 7B.

Note that the line segment 62b′-62a ′ in FIG. 7B is longer than the line segment 62b-62a in FIG. 7A, and this is because the movable body 2 relatively rises. This is because the cam main body 62 (rotating portion 63) is moved to a portion where the groove width is wide.
Further, the angle α2 from the horizontal line of the line segment 62b′-62a ′ in FIG. 7B is different from the horizontal line of the line segment 62b-62a in FIG. 7A due to the cross-sectional shape of the cam body 62 (rotating part 63). It is preferable to drop and rotate so as to keep the angle substantially the same as the angle α1, for the following reason.
For example, when the segment 62b-62a is dropped and rotated so as to gradually approach the horizontal line as the cam body 62 rotates and drops (dropping and rotation gradually decreases to 0 as the angle α2), FIG. When the line segment 62b'-62a 'in (b) reaches a perpendicular drawn from the rail opening side contact point 62b' to the non-opening side surface 42a and exceeds the perpendicular, the cam main body 62 moves to the conductive portion 61. And is rotated by receiving a force transmitted from the movable leg 3 via the arm (clockwise rotation in FIG. 7B), and the sliding portion 40 cannot be fixed (locked) to the movable body 2. The angle maintenance is to prevent such a situation with certainty. In other words, the cam main body 62 is dropped and rotated so that the angle α2 of the line segment 62b′-62a ′ in FIG. 7B is substantially the same as the angle α1 of the line segment 62b-62a. Thus, it can be said that this is one method for more surely expressing the locked state (the same idea as securing the safety factor).

FIG. 7B shows a final fixed state (final support state) where the movable body 2 abuts against the stop position setting body 12 and corresponds to (is connected to) all the movable legs 3 that are grounded. Reference numeral 40 denotes a state in which the movable body 2 (rail 41) is locked, and how the locked state is maintained in this state will be described.
In the final fixed state, the movable body 2 is subjected to the weight of the table and the load (heavy object) placed on the table through the stop position setting body 12 (hanging), and a downward force is applied to the movable body 2. For this reason, the movable body 2 tends to descend. Here, the movement of the movable body 2 to descend is in the direction in which the groove width of the T-groove 42 (locking portion Tx) becomes narrow. Therefore, the downward movement of the movable body 2 is performed from the cam main body 62 in FIG. Then, while rotating counterclockwise (rotation to press the contact portion 61C of the conductive portion 61 against the non-opening side surface 42a), the inside of the T groove 42 (locking portion Tx) is relatively raised. It becomes operation. However, since the conduction portion 61 is positioned so as to prevent this rotation (action) from below the cam body 62 (rotation action piece 64), the final fixed state of FIG. 7B is maintained. (The support object O can be stably supported).

That is, in order for the movable body 2 to descend in the state of FIG. 7B, the groove width of the T-groove 42 (locking portion Tx) is narrower toward the upper side as described above. Thus, the line segment 62b'-62a 'rotates counterclockwise. In other words, the cam main body 62 only needs to rotate counterclockwise around one of the contact points 62b 'and 62a'. However, in FIG. 7B, since the conducting portion 61 prevents such rotation of the cam body 62, the cam body 62 does not rotate (cannot), and therefore the movable body 2 does not descend. The support object O can be stably supported.
Further, it is considered that the final fixed state (locked state) in FIG. 7B is strongly maintained by the load of the placing object (heavy object) placed on the table.

Example 3
Next, Example 3 will be described. In the third embodiment, as described above, as a method of fixing the sliding portion 40 to the movable body 2 (the lock function of the one-way lock joint 7), the slide of the sliding portion 40 (in other words, the vertical slide in the vertical direction) is changed to a cross ( This is a free-running system that stops by tilting a block 71) described later.
For this reason, the basic operations of the one-way lock joint 7, the sliding portion 40, or the movable leg 3 are different from those of the first and second embodiments, and these will be described below.
First, the movable leg 3 according to the third embodiment is not centered on the pivoting operation of opening and closing, but mainly on the operation of the vertical movement (lifting movement). Therefore, the rail 41 is also different from the first and second embodiments. For example, as shown in FIG. 9, a rod 43 provided in the vertical direction outside the movable body 2 is applied as the rail 41.

Further, the movable leg 3 is provided with a block 71 fitted on the rod 43 at the upper end. That is, the block 71 is formed with a through hole larger than the diameter dimension (size) of the rod 43 (the hole diameter having play is a loose fit with the rod 43). When the block 71 provided in a biased state on the upper end of the movable leg 3 is externally fitted to the rod 43, the block 71 tilts (squeezes) so that the movable leg 3 is positioned at an appropriate height with respect to the rod 43. This is a method of fixing (fixing).
Therefore, in the one-way lock joint 7 of the third embodiment, the block 71 is a main component, and this is substantially the sliding portion 40.

Hereinafter, the operation mode of the support leg mechanism S of the third embodiment will be described.
(1) Initial state (all movable legs are ungrounded)
In an initial state, all the movable legs 3 are in an ungrounded state, so that the movable body 2 comes into contact with the starting position setting body (bottom dead center setting body) 11, and the movable leg 3 has all the blocks 71 at the upper end. The rod 43 is positioned at the uppermost end of each rod 43 (see FIG. 9A). At this time, a positioning member that sets (regulates) each block 71 at the uppermost end of each rod 43 is provided from the main body 1 side (not shown), and the block 71 is not fixed to the rod 43. Further, this positioning member is released from the initial initial set state when each movable leg 3 is grounded, so that the block 71 is slidable with respect to the rod 43.

(2) Appearance of 1st grounding leg When the main body 1 (supporting leg mechanism S) is gradually lowered from such an initial state, the 1st grounding leg eventually appears, which is shown in FIG. 9 (a). Here, the left side in the figure is the 1st grounding leg. Due to this grounding, the first grounding leg (movable leg 3) tilts the block 71 toward the main body side (center side) as shown in FIG. 9 (a) because the hole diameter of the block 71 is larger than the outer diameter of the rod 43. To do. The reason why the block 71 tilts toward the main body 1 is that the rail 41 (rod 43), which continues to descend, comes into contact with somewhere in the penetration hole of the block 71.
When the block 71 is tilted to the main body 1 side in this way, as shown in FIG. 9A, the penetrating hole of the block 71 has the rod extension 43 at the upper end of the leg extension side and the lower end of the main body side (inner side). The block 71 is fixed at the upper end portion of the rod 43 (fixed).
In the case of the embodiment shown in FIG. 9, the fixing of the first grounding leg at the upper end of the rod 43 is continued all the time thereafter (even if the movable body 2 comes into contact with the stop position setting body 12, it is further supported thereafter. It is continued while supporting the object O).
Also in Example 3, the height of the movable body 2 (height viewed from the installation surface) is maintained after the appearance of the 1st grounding leg, and in particular, the movable leg 3 does not open here ( Since the contact point does not move), the movable body 2 is in a completely stationary state.

(3) Appearance of the 1st grounding leg to the appearance of the 2nd grounding leg After the appearance of the 1st grounding leg, the main body 1 and the support object O are further lowered, but as described above, the block 71 of the 1st grounding leg is connected to the rod 43 (1st Since the movable body 2 is fixed to the rod 43) to which the grounding leg is attached, the movable body 2 is prevented from descending by the first grounding leg as shown in FIG. Go down to pass. That is, when viewed from the installation surface (installation surface after the appearance of the 1st grounding leg), the movable body 2 is in a stationary state, but the main body 1 continues to descend, so that the operation of the movable body 2 is relatively viewed from the main body 1. Ascending action.
During this time, the non-grounded movable leg 3 (the right movable leg 3 in FIG. 9B) is initially set from the main body 1 as described above, and is not fixed to the rod 43. When viewed from the movable leg 3, the operation of the rod 43 passing through the inside of the through hole of the block 71 is simply ascending (passing), and the positional relationship between the non-grounded movable leg 3 and the main body 1 is maintained. When the movable leg 3 is viewed from the installation surface, it moves downward along with the main body 1. Further, as the movement of the non-grounding movable leg 3 as viewed from the rod 43, the rod 43 is lowered (rubbed down) from the upper end portion by the descending dimension of the main body 1.

(4) Appearance of 2nd grounding leg After the appearance of the 1st grounding leg, when the main body 1 is further lowered (the movable body 2 does not descend and is stationary with respect to the installation surface), an example is shown in FIG. As shown, a 2nd grounding leg appears (in FIG. 9C, the right movable leg 3 corresponds to the 2nd grounding leg).
As a result of this grounding, the 2nd grounding leg (movable leg 3) also tilts the block 71 toward the main body (center side) in the same manner as the 1st grounding leg. Also in this case, as shown in FIG. 9B, the through hole of the block 71 is such that the upper end of the leg extension side and the lower end of the main body side (inner side) sandwich the rod 43 so that the block 71 is connected to the rod 43. It is fixed (fixed) at an intermediate position (position where the block 71 is relatively lowered until it comes into contact with the ground).
In the case of the embodiment shown in FIG. 9, the fixing of the 2nd grounding leg at this position is also continued all the time thereafter.
In this manner, the movable leg 3 (block 71) is lowered relative to the 3rd grounding leg, the 4th grounding leg,...

(5) Final fixed state After all the movable legs 3 are grounded in this manner, when the movable body 2 comes into contact with the stop position setting body 12, the lowering of the main body 1 also stops (FIG. 9D). reference).
In the third embodiment, the contact portion (grounding portion) 32 at the tip of the movable leg 3 is linearly moved (because an arc-shaped locus is not drawn), so that the plurality of movable legs 3 are grounded while the main body 1 is grounded. Is still descending (between FIG. 9 (c) → FIG. 9 (d)), all of the grounded blocks 71 of the movable leg 3 are fixed to the movable body 2 (rod 43), and its speed The movable legs 3 are all the same. In this respect, the fastest rising speed of the sliding portion 40 among the grounded movable legs 3 as in the first and second embodiments is not fixed to the movable body 2 (rail 41). Then, since all the blocks 71 of the movable leg 3 that are grounded are fixed to the rod 43 and their ascending speeds are all equal, the movable body 2 ascends integrally with the sliding part 40 (block 71) with the fastest ascending speed. It must be.

[Other Examples]
The present invention is based on the above-described first to third embodiments as a basic technical idea, but the following modifications can be considered.
First, in the embodiment described above, a stepped land is mainly exemplified as an irregular installation surface (illustrated), and the case where the support object O is supported on such an installation surface is shown. May be an inclined surface (inclined ground) as shown by a two-dot chain line in FIG. 9 (d), and the support object O can also be placed thereon. In addition, as other irregular installation surfaces, uneven surfaces such as rock surfaces can be considered.

Further, the support object O is not necessarily supported horizontally with respect to the installation surface, and for example, the support object O can be supported obliquely as shown in FIG. For example, FIG. 10 assumes that the person holds the support object O in an oblique posture with respect to a horizontal plane and places the support object O close to the installation surface in the same posture. Even when the object O is lowered directly while being held in an inclined posture by a crane or the like, it can be placed in the posture as shown in FIG. That is, in this case, the lifting posture of the support leg mechanism S including the supporting object O is a tilted posture in which the entire center of gravity is shifted and the tilted posture is maintained. The support object O can be placed.

In addition, as described above, the installation direction of the support leg mechanism S is not necessarily limited from the upper side to the lower side, that is, the gravity direction. For example, the support leg mechanism S is brought close to a substantially vertical wall surface, and the support object is placed on the wall surface. When O is installed or when the support object O is installed on the ceiling surface, the movable legs 3 are biased in the closing direction (initial state) with an elastic body such as a spring or rubber. In addition, it is necessary to urge the movable body 2 so as to contact the starting position setting body 11 in the initial state, and providing such an urging means is when the support leg mechanism S is installed in the direction of gravity. This is also an effective technique (can reinforce the force applied by gravity).
Incidentally, the above-mentioned “installing on the wall surface” can be assumed to be a case where a frame with a picture or a certificate is set (decorated) on the wall surface at an appropriate angle.

The present invention includes a movable leg (support leg) for holding a table and a signboard, a support leg for a scaffold when constructing a wall surface and a ceiling surface, a camera tripod (holding a pan head), a chair, a work table, and a ladder. It can be applied when it is desired to stably support various things such as a fisherman's seat.
In addition, since the support leg mechanism of the present invention makes it easy to set the movable leg simply by moving it closer to the installation surface, it requires frequent horizontal and vertical movements during installation and frequently repeated movement and installation. In addition, those that require a large number of support points (grounding points), environments where it is not possible to spend a lot of time for installation work, or hanging from an elevated place to an irregularly shaped installation location It can be used when installation is necessary, and its application range is wide.

Claims

A main body having a target object to be supported;
A movable body that is slidably assembled along the installation direction with respect to the main body,
A plurality of movable legs that are individually and radially connected to the movable body via a one-way lock joint,
In a support leg mechanism that supports a support object in an appropriate posture,
The main body is provided with a start position setting body that starts sliding at an appropriate position along the installation direction of the movable body, and a stop position setting body that stops the sliding at an appropriate position.
In supporting the support object in an appropriate posture, only the operation of bringing the main body close to the installation surface while maintaining a desired posture is performed. At this time, the displacement of the contact timing of each movable leg is different between each one-way lock joint. Permitting as an individual sliding operation along the installation direction relative to the movable body or a sliding operation along the installation direction of the movable body relative to the main body,
The final fixing of the plurality of grounded movable legs is achieved by bringing the movable body into contact with and fixed to the stop position setting body so that each one of the movable legs and the movable body is locked in the one-way lock joint. A support leg mechanism characterized in that the posture of the grounded movable leg is fixed at once by the movable body while maintaining the grounded state of the leg.
With the approaching operation to the installation surface of the main body, the movable leg that is first grounded is the one in which the sliding part of the one-way lock joint is fixed to the movable body by the reaction force of grounding, As the main body is further moved closer to the installation surface, the movable leg is slid so as to approach the stop position setting body. The sliding part slides toward the stop position setting body, but when multiple movable legs are grounded, the sliding speed of the sliding part of each one-way lock joint toward the stop position setting body is the fastest. 2. The support leg mechanism according to claim 1, wherein the movable body is slid toward the stop position setting body with the portion and the movable body fixed.
The installation direction of the main body is a gravitational direction from above to below,
The movable body has the same number of rails set in the installation direction as the movable legs, and the sliding portion of the one-way lock joint is formed so as to slide along the rail.
Further, this rail is a T groove that forms a T-shape in plan view formed in the vertical direction on the side peripheral surface of the movable body,
In the one-way lock joint, a pair of wedges provided between the opening-side surface and the non-opening-side surface of the T-groove act on each other in the biting direction, thereby causing the pair of wedges to move in the groove width direction of the T-groove. The sliding part is pressed against the sliding part to prevent the sliding part from adhering to the rail, and the action of causing the pair of wedges to act on each other in the biting direction is the reaction when the movable leg contacts the installation surface. 3. The support leg mechanism according to claim 1, wherein the support leg mechanism is operated by force.
The installation direction of the main body is a gravitational direction from above to below,
The movable leg is formed to open and close radially at the lower end portion of the main body,
The movable body has the same number of rails set in the installation direction as the movable legs, and the sliding portion of the one-way lock joint is formed so as to slide along the rail.
Further, this rail is a T groove that forms a T-shape in plan view formed in the vertical direction on the side peripheral surface of the movable body,
The one-way lock joint is
A cam body that can be accommodated in the T-groove;
It is connected to the movable leg in the form of a link, and comprises a conductive portion that always makes the end on the opposite side of the movable leg abut on the non-opening surface of the T-groove rail,
Furthermore, the cam body always makes the rotating portion provided at the tip of the rotary action piece abut the surface of the T groove on the rail opening side and the surface on the rail non-opening side,
In addition, the cam body always makes the rotating action piece abut on the upper side of the conductive portion,
When fixing the cam body to the T-groove rail, the reaction force when the movable leg touches the installation surface is applied to the cam body via the conductive portion, and the cam body is stopped by stopping the rotation of the cam body. The support leg mechanism according to claim 1, wherein the support leg mechanism is fixed to the support leg mechanism.
5. The support according to claim 3, wherein a groove width dimension between a surface on the rail opening side and a surface on the non-rail opening side of the T-groove rail is formed so that the interval becomes narrower toward the upper side. Leg mechanism.
The installation direction of the main body is a gravitational direction from above to below,
Further, the movable body is formed by forming the same number of rod-shaped rails as the movable legs in the vertical direction of the side peripheral surface,
The movable leg includes a block fitted on the rail at the upper end portion, and the block is formed such that the hole diameter of the rail penetration hole is larger than the outer diameter of the rail.
The one-way lock joint tilts the block of the movable leg with respect to the rod-shaped rail by the reaction force when the movable leg comes into contact with the installation surface. The support leg mechanism according to claim 1 or 2, wherein the movable leg is fixed to an appropriate position of the rail with a pinch interposed therebetween.
A support leg mechanism movable part that starts following by contact with the installation surface, follows a change in the relative positional relationship with the installation surface, and a plurality of movable legs that are activated and moved by contact with the installation surface,
A movable body that is connected to each movable leg and operates in conjunction with the movable position;
A one-way lock joint for connecting each movable leg to the movable body, and each movable leg is connected and equipped with the movable body, and the operation of the movable body is started at an arbitrary position. A main body including a start position setting body for stopping and a stop position setting body for stopping and fixing the operation at an arbitrary position;
A support leg mechanism comprising:
By following the change in the relative positional relationship, and by moving the support leg mechanism,
By activating each movable leg in contact with the installation surface,
The movable legs that have been brought into contact with each other are connected by the one-way lock joint,
Operate the movable body in conjunction with each movable leg that has been activated to contact,
The contact points of the movable legs that are in contact with each other by the movement that operates the support leg mechanism are the contact points with respect to the installation surface.
Maintained by the movement of each movable leg following the shape of the installation surface,
By each position of the connection made by the movable body and the one-way lock joint,
Maintaining the difference in the spatial coordinate position of the contact point of each movable leg due to the shape of the installation surface,
The movement of the movable body, which is performed in conjunction with transmission through a one-way lock joint that connects the movable legs to the movable body by a movement that operates the support leg mechanism,
By stopping with the stop position setting body set on the main body,
Each movable leg holds a contact point corresponding to the shape of the installation surface, and the operation parts are collectively stopped and fixed.
A support leg mechanism characterized by supporting in a contact support state of an arbitrary posture.
A plurality of movable legs,
A movable body,
A one-way lock joint connecting the movable leg and the movable body;
A support leg mechanism comprising a main body having a stop position setting body for holding and fixing the movable body;
Support leg mechanism movable part that starts following by contact with the installation surface,
Follow the change in the relative positional relationship with the installation surface,
Prior to the end of the operation of the support leg mechanism, the plurality of movable legs are brought into contact with the installation surface,
The plurality of movable legs are connected to and interlocked with the movable body at the time of contact activation to the installation surface,
Operating the movable body on the main body in connection with a movable leg that moves by the follower;
When the movable body stops at the stop position setting body of the main body,
Stop all connected and moving parts at once,
End the operation of the support leg mechanism,
As a result, while maintaining the contact point to the installation surface of the plurality of movable legs,
A support leg mechanism characterized in that the support leg mechanism is supported and fixed to the installation surface in an arbitrary posture.