JP2006193240A - Table moving device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a table moving device simplified and miniaturized in a link mechanism thereof, improved in durability, safety and reliability by eliminating a sliding member such as a roller, and capable of securing a larger load-lifting height and possible to be provided in any direction. <P>SOLUTION: The table moving device 1 is provided with a base 2 provided on a floor surface D formed by digging down a floor F, a table 3 arranged over the base 2, and an elevating mechanism 4 provided between the base 2 and the table 3 to elevate the table 3 for movement. The elevating mechanism 4 is structured of a first parallelogram link element 6 turnably connected to the base 2 in one end thereof, a second parallelogram link element 7 turnably connected to the table 3 in one end thereof, a joint element 8 for connecting the other end of the first parallelogram link element 6 to the other end of the second parallelogram link element 7, a standing/falling means for standing/falling the first parallelogram link element 6, and a connecting link means 10 for connecting the first parallelogram link element 6 to the second parallelogram link element 7. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a table moving device for reciprocating a table with respect to a base disposed on a floor surface, a wall surface, a ceiling surface, or the like.

  Conventionally, a moving device having a reciprocating mechanism for reciprocating a moving body such as a table with respect to a reference position such as a floor surface or a wall surface, in particular, an elevating mechanism for moving a table up and down relative to a base provided on the floor surface. As what is called a table lift apparatus provided with this, what was described in patent documents 1-5 is known, for example.

A lift for a vehicle disclosed in Patent Document 1 includes a long arm whose one end is rotatably supported on a table on which a vehicle is mounted, and whose other end moves on a laying rail in a pit via a rotating roller (roller). A short arm whose one end is rotatably supported in the middle of the long arm and whose other end is rotatably supported on the side opposite to the free end side of the long arm of the laying rail, and the short arm, And a cam mounted on the shaft fulcrum of the long arm.
In the lift device of Patent Document 2, an articulated parallelogram boom assembly includes a lower parallelogram boom assembly, an upper parallelogram boom assembly, a floating frame that connects the two assemblies, and an elevator. And a first lift device.

The table lift device of Patent Document 3 is configured by interposing an X-shaped extendable arm in which an inner arm and an outer arm are rotatably connected to each other between a base and a table. A guide roller attached to the tip is configured to roll on the lower surface of the table and along the left and right edges of the base.
The electric table lift device of Patent Document 4 is formed by connecting an outer arm and an inner arm in an X shape at a connection fulcrum, and a roller is rotatably attached to the other end of the outer arm and the inner arm. The lower surface and the upper surface of the base are slidably contacted with each other.
In the table lift device of Patent Document 5, a panta arm formed by connecting two arms in an X shape is interposed between a table and a base, and a roller is attached to the tip of the arm. And is configured to be slidably contacted with the upper surface of the base so as to be able to roll.

JP-A-9-77482 JP 10-259933 A JP 2001-278586 A JP-A-10-114497 JP-A-8-217392

However, according to Patent Document 1, when the table is lowered, the long arm is laid down and the upper end is lowered, so that a storage space corresponding to the length must be secured, and the pit becomes large. was there.
According to Patent Document 2, the lower parallelogram boom assembly and the upper parallelogram boom assembly are connected and lifted by the hydraulic cylinder arranged in the vertical direction. However, there is a problem in that it cannot be folded to a thickness equal to or less than the length of the cylinder of the hydraulic cylinder and cannot be downsized.

  Further, according to Patent Documents 3, 4, and 5, there are problems in that the upper and lower guide rails are required and the number of parts increases. Further, when there is no guide rail, there is a problem that the X link or the table is reversed due to an overhang load. Further, since the guide rail and the roller have a gap, play is likely to occur. Furthermore, with a single-stage X-link, a head larger than the table length cannot be taken. The table is assumed to be raised and lowered above the base.

  Therefore, in view of the above problems, the present invention can simplify the link mechanism and reduce the size of the link mechanism, eliminate the sliding member such as a roller, improve durability, safety and reliability, secure a larger lift, It is an object of the present invention to provide a table moving device that can be installed in any direction, not limited to the ascending / descending direction.

  In order to solve the above problems, a table moving device according to the invention of claim 1 is a table moving device having a reciprocating mechanism for reciprocating the table with respect to the base between the base and the table. The reciprocating mechanism has a pair of opposed link bodies, has a parallelogram formed by four fulcrums defined at both ends, and is pivotally connected to a pair of two fulcrums on one end side. It has a first parallelogram link body and a pair of opposing link bodies, and a parallelogram is formed by four fulcrum points defined at both ends, and a pair of two fulcrum points on one end side can be turned to a table. A second parallelogram link body connected to the joint, a pair of two fulcrum points on the other end side of the first parallelogram link body, and a pair of two fulcrum points on the other end side of the second parallelogram link body Body and first parallelogram link body or second body A tilting means for tilting any one of the row quadrilateral links, and a connection angle formed between the first parallelogram link and the second parallelogram links in response to the tilting motion. And a connecting link means for connecting the first parallelogram link body and the second parallelogram link body.

  In the table moving device according to the second aspect of the present invention, when the first parallelogram link body and the second parallelogram link body are connected to the joint body, the respective link bodies are connected at the same position, One link body of one parallelogram link body is provided with the extended link body extended along the extension line from the connection end with a joint body, and a connection link means has an extended link body and its extension. And a connecting link body that connects the positions between both fulcrum points of one link body of the installation tip and the second parallelogram link body.

  According to a third aspect of the present invention, in the table moving device, the first parallelogram link body is rotatably connected to the base so that a direction line connecting a pair of two fulcrums on one end side intersects the base surface. In addition, the second parallelogram link body is configured to be rotatably connected to the table so that a direction line formed by connecting a pair of two fulcrums on one end side intersects the table surface. The

  According to the first aspect of the present invention, the link mechanism can be simplified and reduced in size, the sliding member such as a roller can be eliminated, durability, safety and reliability can be improved, a larger head can be secured, and the vertical lifting direction It can be installed in any orientation.

  According to the invention of claim 2, the second parallelogram link body can be tilted in accordance with the tilting of the first parallelogram link body.

  According to the invention of claim 3, it is possible to reduce the size by lowering the height when lowered.

  Hereinafter, an embodiment of a table moving device according to the present invention will be described with reference to the drawings. FIG. 1 shows an embodiment of the table moving device 1 and is an explanatory diagram showing the left side of the table 3 raised with respect to the base 2. FIG. 2 is an explanatory diagram showing the front side of the table moving device 1 of FIG. It is. 3 is an explanatory view showing the left side of the table moving apparatus 1 with the table 3 lowered relative to the base 2, FIG. 4 is an explanatory view showing the front side of the table moving apparatus 1 in FIG. 3, and FIG. It is explanatory drawing showing the upper surface side of the table moving apparatus 1 of 3. FIG.

  The table moving apparatus 1 is provided between a base 2 installed on a floor D formed by digging a floor F at a predetermined depth L, a table 3 disposed above the base 2, and the base 2 and the table 3. And an elevating mechanism 4 as a reciprocating mechanism for elevating and moving the table 3 in a horizontal state above the base 2. The elevating mechanism 4 includes a first parallelogram link body 6 that is rotatably connected to the base 2 at one end side, a second parallelogram link body 7 that is rotatably connected to the table 3 at one end side, A joint body 8 that rotatably connects the other end side of the first parallelogram link body 6 and the other end side of the second parallelogram link body 7 in a square shape, and a first parallelogram link body 6. The first parallelogram link body so as to change the connection angle between the first parallelogram link body 6 and the second parallelogram link body 7 in conjunction with the tilting means for tilting and the tilting operation. 6 and a connecting link means 10 for connecting the second parallelogram link body 7 to each other.

  The first parallelogram link body 6 has a pair of opposed first link bodies 11 and second link bodies 12 arranged in parallel, and a pair of first link quadrilateral link bodies 6 on the lower end sides of the first and second link bodies 11 and 12. The two fulcrums 11a and 12a are defined, a pair of two fulcrums 11b and 12b are defined on the respective upper ends, and a parallelogram is formed by the two pairs of fulcrums 11a, 12a, 11b and 12b. ing.

  The second parallelogram link body 7 has a pair of opposed third link body 13 and fourth link body 14 arranged in parallel, and a pair of third link bodies 13 and 14 are arranged on the upper end side of each of the third and fourth link bodies 13 and 14. The two fulcrum points 13a and 14a are defined, and a pair of two fulcrum points 13b and 14b are defined on the lower ends of the two fulcrum points 13a and 14a, and a parallelogram is formed by the two pairs of fulcrum points 13a, 14a, 13b and 14b. ing.

  The base 2 includes a floor plate 21 fixed to the floor surface D with bolts, a pair of side plates 22a projecting upward from the left and right edges of the floor plate 21, and a left-right symmetrical inner side of the side plate 22a on the front end side of the floor plate 21. And a pair of side plates 22b projecting upward from the position. Each side plate 22a has a first and second base shaft support portion 23 for connecting a pair of fulcrums 11a and 12a on the lower end side of the first and second link bodies 11 and 12 to the rear end sides thereof in a rotatable manner. 24 is provided. The second base shaft support portion 24 is provided at the rearmost end of the side plate 22 a, and the first base shaft support portion 23 is provided at a lower position on the center side than the second base shaft support portion 24. The predetermined angle of the direction line is such that when the first and second link bodies 11 and 12 are rotated and arranged horizontally, the second link body 12 is at a different height above the first link body 11. It is set to be placed.

  The left and right first base shaft support portions 23 are configured such that the fulcrum 11a of the left and right first link bodies 11 arranged outside the both side plates 22a are pivotally attached to both ends of a shaft 26 that extends from side to side. Further, the left and right second base shaft support portions 24 are configured by axially attaching the fulcrum 12a of the left and right second link bodies 12 arranged inside the both side plates 22a to both ends of the shaft 27 spanning from side to side. . At this time, the direction line formed by connecting the two fulcrums 11a and 12a is inclined downward at a predetermined angle toward the center so as to intersect the floor plate 21 surface as the base surface.

  Furthermore, the base 2 is provided with one hydraulic cylinder 9 that connects the side plate 22b of the base 2 and the lower portion of the first link body 11 as a tilting means for tilting the first parallelogram link body 6. . The hydraulic cylinder 9 includes a rod 91 that extends and contracts and a cylinder cylinder 92. A connecting plate 41 that connects each other is installed under the left and right first link bodies 11, and the connecting plate 41 has a plate surface along a surface formed between the left and right first link bodies 11. Has been placed. On the upper surface side of the connecting plate 41, a connecting plate shaft support portion 43 to which the tip of the rod 91 of the hydraulic cylinder 9 is rotatably connected is provided. The side plate 22b of the base 2 is provided with a third base shaft support portion 25 to which a cylinder cylinder 92 of the hydraulic cylinder 9 is rotatably connected. The connecting plate shaft support portion 43 is configured by attaching a bearing cylinder 93 provided at the tip of the rod 91 to the shaft 42. The third base shaft support portion 25 is configured such that the base shaft 94 of the cylinder cylinder 92 is pivotally attached to the bearing 28 of the side plate 22 b of the base 2.

  Two latch members 95 each having a plurality of saw teeth are provided side by side on both the left and right sides of the hydraulic cylinder 9. One end of each latch member 95 is fixed to the bearing cylinder 93 of the rod 91 so as to rotate together with the hydraulic cylinder 9, and the other end is supported so as to be able to enter and exit at an inlet / outlet of a support portion 96 provided in the cylinder cylinder 92. Has been. The support 96 is provided with a clasp 97 that engages with a saw tooth and prevents the rod 91 from being shortened. The clasp 97 is provided so that the shortening operation can be released.

  The table 3 includes a top plate 31, a pair of left and right side plates 32 projecting downward from the left and right edges of the top plate 31, and a plate 35 attached to the inner side of each of the rear end sides of the left and right side plates 32. It is configured with. Each plate 35 is provided with first and second table shaft support portions 33 and 34 to which a pair of fulcrums 13a and 14a on the upper end side of the third and fourth link bodies 13 and 14 are rotatably connected. ing. The first table shaft support portion 33 is provided at the rearmost end of the plate 35, and the second table shaft support portion 34 is provided at a position higher on the center side than the first table shaft support portion 33. At this time, the direction line formed by connecting the two fulcrums 13a and 14a is inclined upward at a predetermined angle toward the center so as to intersect the surface of the top plate 31 as the table surface. The predetermined angle of the direction line is such that when the third and fourth link bodies 13 and 14 are rotated and arranged horizontally, the fourth link body 14 is different in height above the third link body 13. It is set to be placed.

  The left and right first table shaft support portions 33 are configured by axially attaching fulcrums 13 a of the left and right third link bodies 13 disposed inside the plates 35 to shafts 36 individually provided on the respective plates 35. Yes. The left and right second table shaft support portions 34 are configured by axially attaching the fulcrum 14a of the left and right fourth link bodies 14 disposed inside the plates 35 to both ends of the shaft 37 spanning from side to side. Yes. The left and right plates 35 are provided with a shaft 38 for preventing twisting at a position between the first table shaft support portion 33 and the second table shaft support portion 34.

  The joint body 8 includes a pair of left and right rectangular side plates 81 and includes a back plate 82 that couples the left and right side plates 81 together. The side plate 81 is provided with first and second joint shaft support portions 83 and 84 to which a pair of fulcrums 11b and 12b on the upper end sides of the first and second link bodies 11 and 12 are rotatably connected, respectively. It has been. In addition, third and fourth joint body shaft support portions 85 and 86 to which a pair of fulcrums 13b and 14b on the lower end side of the third and fourth link bodies 13 and 14 are rotatably connected are provided at the upper part. ing. In the table moving device 1, the second joint body shaft support portion 84 and the third joint body shaft support portion 85 are connected to the side plate 81 of the joint body 8 at the same position.

  The left and right first joint body shaft support portions 83 are configured by axially attaching fulcrums 11b of the left and right first link bodies 11 arranged outside the both side plates 81 to shafts 87 individually provided on the respective side plates 81. ing. Further, the left and right second joint body shaft support portions 84 are pivotally attached to the shafts 88 provided individually on the respective side plates 81 with the fulcrums 12b of the left and right second link bodies 12 arranged inside the both side plates 81. It is configured. In addition, the left and right third joint body shaft support portions 85 are pivotally attached to the shaft 88 together with the fulcrum 13b of the second link body 12 with the fulcrum 13b of the left and right third link bodies 13 arranged outside the side plates 81. It is configured. Further, the left and right fourth joint body shaft support portions 86 are configured by axially attaching the fulcrum 14b of the left and right fourth link bodies 14 arranged outside the both side plates 81 to both ends of the shaft 90 that spans the left and right. ing.

  The connecting link means 10 includes a short plate-like extended link body 15 extending outward from a fulcrum 12b defined on the upper end side of the second link body 12, and a medium length longer than the extended link body 15. It is formed in a rod shape, and fulcrums 18a and 18b are defined at both ends thereof, and the left and right connecting the extended tip of the extended link body 15 and the central position between both fulcrums 14a and 14b of the fourth link body 14 are connected to each other. The two connecting bodies 18 are provided.

  The left and right extension link bodies 15 are provided with extension link body shaft support portions 16 to which pivot points 18b on the lower end side of the connecting body 18 are rotatably connected to the extension tips. The extended link body shaft support portion 16 is provided on an extension axis EL (indicated by a two-dot chain line in FIG. 1) connecting the two fulcrums 12a and 12b at both ends of the first link body 12. Further, a connecting plate 51 for connecting the left and right fourth link bodies 14 to each other is installed at a substantially central position. The connecting plate 51 is disposed such that its plate surface is along a surface formed between the left and right fourth link bodies 14. On the lower surface of the connecting plate 51, two central position shaft support portions 52 to which the fulcrum 18a on the upper end side of the connecting body 18 is rotatably connected are provided at left and right symmetrical positions.

  The left and right extension link body shaft support portions 16 are pivotally attached to the shafts 53 provided individually on the extension link bodies 15 with the fulcrums 18b of the left and right connection bodies 18 arranged inside the extension link bodies 15 respectively. Configured. The left and right central position shaft support portions 52 are configured by pivotally attaching the fulcrum 18 a of the left and right connecting bodies 18 to a shaft 54 disposed on the lower surface side of the connecting plate 51.

  In the table moving apparatus 1 having the above-described configuration, the lifting / lowering operation of the table 3 will be described. First, when the table 3 is raised, the hydraulic cylinder 9 is extended by a hydraulic pump (not shown), and the connecting plate shaft support 43 is pushed rearward, whereby the first parallelogram is formed via the first link body 11. The link body 6 is rotated upward to stand up. At this time, the extended link body 15 that rotates together with the second link body 11 causes the fourth link body 14 connected to the extended link body 15 by the connecting body 18 to rotate upward, via the fourth link body. Thus, the second parallelogram link body 7 also rotates upward at the same time, and the connection angle between the first and second parallelogram link bodies 6 and 7 increases. And the table 3 connected to the 2nd parallelogram link body 7 raises with a horizontal state. The table 3 is raised to a predetermined position to stop the extension operation of the hydraulic cylinder 9, and a latch 97 is engaged with the latch member 95 to prevent the hydraulic cylinder 9 from being shortened, thereby stopping the table 3 at the predetermined position ( 1 and 2).

  On the other hand, when the table 3 is lowered, the extension amount of the hydraulic cylinder 9 is adjusted so that the table 3 is in a neutral state where the table 3 is neither raised nor lowered, and the clasp 97 is disengaged in the neutral state. 9 is shortened, the first and second parallelogram link bodies 6 and 7 and the connecting link means 10 are similarly operated, and the table 3 is lowered in a horizontal state. In a state where the table 3 is lowered to the lowest position and the top plate 31 is flush with the floor F, the first to fourth link bodies are all horizontal, and the first link body 11 disposed at the bottom is 2nd and 3rd link bodies 12 and 13 are arranged in the state where it overlapped on either side across the side board 81 of joint body 8, and the 4th link body 14 is arranged on the upper part (Drawing 3-Drawing 5). reference).

  According to the table moving device 1 described above, it is possible to realize a compact link mechanism with a simple configuration by eliminating sliding members such as rollers and shoes from the configuration. Further, lifting and backlash due to the sliding member can be eliminated, and the movement stability of the table can be improved. Further, the sliding member is easily affected by external factors such as earth and sand, muddy water oil, battery fluid, paint, snow melting agent, dust, etc. According to the present apparatus 1 without the sliding member, rust, wear, corrosion, etc. The durability can be improved and the maintenance of accuracy over a long period can be expected. In addition, it can be used for outdoor installation and car washing, which are strict usage conditions, and the usable range can be expanded.

  Further, the fulcrum 18b on the lower end side of the coupling body 18 is placed on the extension axis EL of the first link body 11, and the fulcrum 18a on the upper end side of the other coupling body 18 is pivotally supported on the substantially central portion of the fourth link body 14. By doing so, the second parallelogram link body 7 can be tilted in accordance with the tilting of the first parallelogram link body 6. Further, the first parallelogram link body 6 is connected to the side plate of the base 2 so that the direction line connecting the two fulcrums 11a and 12a of the first and second link bodies 11 and 12 intersects the floor plate 21 surface of the base 2. Since the first and second link bodies 11 and 12 are pivotably connected to a predetermined position 21, the first and second link bodies 11 and 12 can be rotated until they are in a horizontal state. Therefore, the height at the time of descent | fall can be restrained low to the thickness for two of the 1st and 2nd link bodies 11 and 12. FIG. At the same time, the first parallelogram link body 6 is connected to the table 3 so that the direction line connecting the two fulcrums 13 a and 14 a of the third and fourth link bodies 13 and 14 intersects the top plate 31 surface of the table 3. Since it is connected to the predetermined position of the plate 35 so as to be rotatable, the third and fourth link bodies 13 and 14 can be rotated until they become horizontal, and the height when lowered can be further suppressed.

  Moreover, since the 1st link body 11 is arrange | positioned inside with respect to the side plate 81 of the joint body 8, the 3rd link body 13 is arrange | positioned outside, and both fulcrum 11b, 13b was connected in the same position, 1st and The third link bodies 11 and 13 can be arranged in a state where they are overlapped on the left and right with the side plate 81 of the joint body 8 sandwiched therebetween, and the height when lowered is further suppressed, so that the apparatus 1 can be most miniaturized when lowered. Therefore, for example, when the apparatus 1 is lowered and stored in the pit, the predetermined depth can be reduced to reduce the remaining soil processing cost and the construction cost. In addition, the base can be installed not only on a horizontal surface but also on a vertical surface, etc., so that the table can be reciprocated in any direction, greatly expanding its application. In addition, since all the link members are connected by the shaft support portion, in addition to preventing the table from being reversed, it is possible to reduce backlash, reduce wear parts, and expect a long life. Further, a lift higher than the table length can be secured by the one-stage lifting mechanism 4.

The present invention is not limited to the above-described embodiment, and can be implemented by appropriately changing the shape and configuration of each part without departing from the spirit of the present invention, as exemplified below. .
(1) The table moving device, for example, by placing the base on the floor of a pit provided on the floor of an automobile maintenance factory, moves the table vertically up and down above the base and lifts the vehicle placed on the table. It can be applied to an automobile lift device. In addition, it can also be applied to a lift for a transfer machine.
(2) When the table moving device is applied to an automobile lift device, the vehicle may be lifted / lowered not only by one table moving device but also by two table moving devices arranged side by side.
(3) The table moving device may be configured such that the first and second parallelogram link bodies are not limited to the left and right two sets, and a plurality of sets such as one set or three sets are provided between the base and the table. good.
(4) The reciprocating mechanism is not limited to two bodies of the first and second parallelogram link bodies, and a plurality of bodies can be connected by joint bodies and connecting link means.
(5) The first parallelogram link body is not limited to the same length as the second parallelogram link body, and may be configured with a different length. In this case, the table is not limited to being parallel to the base, but can be translated in a state having a predetermined angle.
(6) The raising / lowering means is not limited to a hydraulic cylinder, and may be configured using another telescopic drive device such as a pneumatic cylinder.
(7) The raising / lowering means is not limited to be provided between the base and the first parallelogram link body, but may be provided between the table and the second parallelogram link body. In that case, the configuration of the connecting link means is also changed as appropriate.
(8) The joint body is not limited to the side plate, and may be composed of a beam-like body or the like as long as the arrangement positions of the fulcrums 11b, 12b, 13b, and 14b can be fixed.
(9) The center position shaft support portion is not limited to the center position of the fourth link body 14 and may be provided at a position shifted on a line connecting the both support points as long as it is a position between both support points 14a and 14b.
(10) Both the first and second parallelogram links 6 and 7 are not limited to connecting the respective direction lines so as to intersect the base surface and the table surface, but either one of the direction lines. May be connected so as to intersect the corresponding plane. In this case as well, the height of either the first parallelogram link body 6 or the second parallelogram link body 7 crossing the direction lines can be kept low.

It is explanatory drawing showing one Embodiment of the table moving apparatus which concerns on this invention, and showing the left side which raised the table with respect to the base. It is explanatory drawing showing the front side of FIG. It is explanatory drawing showing the table moving apparatus of FIG. 1, and showing the left side which lowered the table with respect to the base. It is explanatory drawing showing the front side of FIG. It is explanatory drawing showing the upper surface side of FIG.

Explanation of symbols

  1 .... Table moving device, 2 .... Base, 3 .... Table, 4. Lifting mechanism as reciprocating mechanism, 6 .... First parallelogram link body, 7 .... Second parallelogram link body, 8 .. Joint body, 9 .. Hydraulic cylinder as tilting means, 10.. Linking means, 11.. First link body, 11 a, 11 b, fulcrum, 12. .., fulcrum, 13 ... third link body, 13a, 13b ... fulcrum, 14 ... fourth link body, 14a, 14b ... fulcrum, 15 ... extension link body, 16 ... extension link body axis ·································································································· 21 Base shaft support, 26 ... Shaft, 27 ... Shaft, 28 ... Bearing, 3 ..Top plate, 32..Side plate, 33..First table shaft support, 34..Second table shaft support, 35..Plate, 36..Shaft, 37..Shaft, 38..Shaft, 41. · Connecting plate, 42 ·· Shaft, 43 ·· Connecting plate shaft support, 51 ·· Connecting plate, 52 ·· Center position shaft supporting portion, 53 ·· Shaft, 54 ·· Shaft, 81 ·· Side plate, 82 ·· Back Plate 83 .. First joint body pivot support 84.. Second joint body pivot support 85.. Third joint body pivot support 86.. Fourth joint body pivot support 87. Shaft, 90 ... Shaft, 91 ... Rod, 92 ... Cylinder cylinder, 93 ... Bearing cylinder, 94 ... Shaft, 95 ... Latch member, 96 ... Support, 97 ... Clasp, D ... Floor, EL ... extension axis, F ... floor, L ... depth.

Claims (3)

A table moving device having a reciprocating mechanism for reciprocating the table relative to the base between the base and the table,
The reciprocating mechanism is
A first parallelogram link having a pair of opposed link bodies, forming a parallelogram by four fulcrum points defined at both ends, and rotatably connected to a pair of two fulcrum points on one end side Body,
A second parallelogram link having a pair of opposed link bodies and forming a parallelogram by four fulcrum points defined at both ends, and a pair of two fulcrum points on one end side being rotatably connected to a table Body,
A joint body connecting a pair of two fulcrums on the other end side of the first parallelogram link body and a pair of two fulcrums on the other end side of the second parallelogram link body;
A tilting means for tilting one of the first parallelogram link body and the second parallelogram link body;
The first parallelogram link body and the second parallelogram link body are changed so that the connection angle between the first parallelogram link body and the second parallelogram link body is changed in conjunction with the tilting motion. Connecting link means for connecting,
A table moving device. When connecting the first parallelogram link body and the second parallelogram link body to the joint body, each one link body is connected at the same position,
One link body of the first parallelogram link body includes an extended link body extending along the extension line from the connection end with the joint body,
The connecting link means includes an extended link body, and a connecting link body that connects the extended tip and the position between both fulcrums of one link body of the second parallelogram link body.
The table moving apparatus according to claim 1. The first parallelogram link body is rotatably connected to the base so that a direction line formed by connecting a pair of two fulcrums on one end side intersects the base surface.
The second parallelogram link body is rotatably connected to the table so that a direction line connecting a pair of two fulcrums on one end side intersects the table surface.
The table moving device according to claim 1, wherein the table moving device is provided.

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