CN210025585U - Lifting saw bench - Google Patents

Abstract

The utility model relates to a lifting sawing stool, which comprises a stool surface mechanism and foot frames, wherein each foot frame comprises foot rods, each foot rod is formed by sleeving an inner foot rod and an outer foot rod inside and outside, a lifting positioning hole is arranged on one side wall of each inner foot rod, and a lifting positioning mechanism is arranged on the upper side wall of each outer foot rod; the lifting positioning mechanism comprises two parallel bearing plates with shaft holes, a lifting rotating shaft is connected in the shaft holes of the two bearing plates, the lifting rotating shaft is sleeved with a ring and connected with a torsion spring, a pressing plate is connected to the lifting rotating shaft, a positioning plug-in is arranged on the pressing plate relative to the part above the lifting rotating shaft, and the pressing plate is arranged as a pressing part relative to the part below the lifting rotating shaft. The utility model improves the relative inserting direction of the positioning plug-in and the lifting positioning hole, so that the matching of the positioning plug-in and the lifting positioning hole is more compact and the structure is more stable; the structure of pressing the plate is improved, thereby changing the moment, and the problem that the positioning plug-in is not easy to touch the foot rod during the lifting operation is solved, so that the operation is smooth.

Description

Lifting saw bench

Technical Field

The utility model belongs to sawmilling auxiliary assembly, concretely relates to lift sawing bench.

Background

During the carpenter's operation, the sawn wooden bench is used for supporting the timber of treating processing, or cooperates the timber of fixing of anchor clamps and treating processing, is the carpenter's auxiliary assembly of wide application. The sawhorses are generally formed by beams and foot bars, the structure is relatively simple, and in order to reduce the storage space and facilitate carrying and carrying, the structure with the foldable foot bars is generally adopted. In order to meet the requirements of different operation heights, the foot rods can be arranged to be lifted. 201220310726.1 the work bench can be lifted, the leg can be extended or retracted by the positioning hole, the block and the elastic element, specifically, the insert on the block can be inserted into the positioning hole in an inclined way to form connection. In practice, it has been found that the above-described construction is more convenient for the operation of lengthening the legs, in which case the insert is pulled out at an inclined angle and slides along the side wall of the inner tube, and when sliding into position, it is inserted; and the operation of reducing the frame foot is inconvenient, at the moment, the plug-in components and the inner tube are inconsistent relative to the movement direction, when the pressing of the clamping block is unstable, the plug-in components collide with the side wall of the inner tube, and the smooth progress of the telescopic movement of the frame foot is hindered. In addition, the frame foot is more generally the flexible locate mode that adopts locating hole and elasticity to detain the combination, and elasticity is detained smallly, and flexible range is limited, in order to guarantee the normal flexible of elasticity knot, the cooperation of inner tube and flexible pipe is more pine, and the cooperation of elasticity knot and locating hole is also more pine, and when using, there is rocking of certain range in the frame foot.

Disclosure of Invention

The utility model discloses mainly to the problem that the foot pole elevation structure of current sawmilling bench exists, invented a lift sawmilling bench, improved the elevation structure of foot pole, improved the relative grafting direction of location plug-in components and lift locating hole, made the matching of both tighter, the space is little, the foot pole overall structure is more stable; the structure of pressing the plate is improved to change moment, press the rotation that forms less range and can make and fix a position plug-in components and produce great interval between the lift locating hole, during lifting operation, be difficult for producing the problem that fix a position plug-in components and foot bar collide, make the operation smooth and easy.

The above technical problem of the present invention can be solved by the following technical solutions: the utility model provides a lifting sawing stool, includes bench face mechanism on upper portion, supports the foot rest of bench face mechanism, its characterized in that, the foot rest includes three at least foot poles, and each foot pole comprises the interior foot pole that is located the inboard, cup joints inside and outside the outer foot pole that is located the outside, the upper end of interior foot pole is connected in bench face mechanism, is provided with the lift locating hole that a plurality of intervals were arranged into a line on the lateral wall of interior foot pole, the upper end lateral wall of outer foot pole is provided with lift positioning mechanism.

The lifting positioning mechanism comprises two parallel bearing plates with shaft holes, a lifting rotating shaft is connected in the shaft holes of the two bearing plates, a ring sleeve is connected with a torsion spring in the lifting rotating shaft, a pressing plate is connected to the lifting rotating shaft, a positioning plug-in is arranged on the pressing plate relative to the part above the lifting rotating shaft, the positioning plug-in protrudes vertically and faces towards the pressing plate in the direction of the lifting positioning hole, the positioning plug-in penetrates through the side wall of the outer foot rod and can be vertically inserted into the lifting positioning hole of the inner foot rod, the pressing plate is arranged to be a pressing part relative to the part below the lifting rotating shaft, the pressing part is parallel to the side wall of the outer foot rod and forms a space, or the pressing part is inclined and expanded outwards relative to.

Compared with a common telescopic positioning structure combining an elastic buckle and a positioning hole, the lifting positioning structure with the bearing plate, the torsion spring, the pressing plate and the positioning plug-in is more stable; compared with the existing structure formed by matching the positioning hole, the clamping block, the elastic piece and the plug-in piece, in the lifting positioning structure, the lifting positioning hole is matched with the plug-in piece more tightly, and the positioning plug-in piece and the lifting positioning hole can generate larger distance by pressing to form rotation with smaller amplitude, so that the operation is smoother.

Preferably, the pressing plate is a flat plate and is parallel to the side wall of the outer foot rod, the middle part of the flat plate is movably connected with the lifting rotating shaft, and the lower part of the flat plate is used as the pressing part; or, press the plate and set up to the board of buckling, its upper portion is vertical dull and stereotyped, and a downward hang plate of slope is connected to the lower extreme of this dull and stereotyped, and another vertical dull and stereotyped is connected to the lower extreme of this hang plate, and the hang plate swing joint that is located the middle part is in the lift pivot, and the vertical dull and stereotyped that is located the lower part is as pressing the portion. The pressing part is arranged on the outer leg rod, the outer leg rod is arranged on the outer leg rod, the pressing part is arranged.

Preferably, the inner leg rod comprises an inner leg rod main plate and inner leg rod side plates vertically connected to two sides of the inner leg rod main plate, the cross section of the inner leg rod is U-shaped, and the positioning hole is formed in the inner leg rod main plate; the outer foot rods comprise outer foot rod main boards and outer foot rod side boards which are vertically connected to the two sides of the outer foot rod main boards, and the cross sections of the outer foot rods are U-shaped; the two parallel bearing plates are respectively and fixedly connected to the outer foot rod side plates on the two sides of the outer foot rod, and the rotating shaft, the torsion spring and the pressing plate are all positioned on the outer side of the outer foot rod main plate; the foot rods with the opening surfaces can be mutually crossed and stacked when being folded, so that the space occupied after folding is reduced.

Preferably, the stool surface mechanism comprises a long rectangular stool panel, a left end plate vertically connected to the left edge of the stool panel, a right end plate vertically connected to the right edge of the stool panel, a front side plate vertically connected to the front edge of the stool panel, and a rear side plate vertically connected to the rear edge of the stool panel, wherein the left end plate, the right end plate, the front side plate and the rear side plate all extend downwards relative to the stool panel; a first rotating shaft is vertically connected between the upper part of the front side plate and the upper part of the rear side plate at the left end of the stool surface mechanism, a first rotating part is hinged on the first rotating shaft, the lower end of the first rotating part is connected with a second rotating shaft, the axial direction of the second rotating shaft is consistent with the axial direction of the stool panel, and two leg rods, namely a first leg rod and a second leg rod, are simultaneously hinged on the second rotating shaft; a third rotating shaft is vertically connected between the lower part of the front side plate and the lower part of the rear side plate at the right end of the stool surface mechanism, a second rotating part is hinged on the third rotating shaft, the lower end of the second rotating part is connected with a fourth rotating shaft, the axial direction of the fourth rotating shaft is consistent with the axial direction of the stool panel, and two leg rods, namely a third leg rod and a fourth leg rod, are simultaneously hinged on the fourth rotating shaft; the surface of the first foot bar opening is opposite to the surface of the second foot bar opening, and the surface of the third foot bar opening is opposite to the surface of the fourth foot bar opening.

The stool surface mechanism is a completely hollow cuboid, and a cavity for accommodating the foot rods is arranged inside the stool surface mechanism; when the foot rest is normally used, the upper ends of the two foot rods positioned at the same end are separated from the lower ends of the two foot rods, and the two foot rods are usually forked to form an acute angle; when the foot rest is folded, the two foot rods are folded and then folded upwards together to enter the cavity formed by the stool surface mechanism.

In order to fully and reasonably plan the limited space in the stool surface mechanism, the two groups of closed foot rods are distributed up and down in the stool surface mechanism; because the hinged part of the first rotating piece and the stool surface mechanism is arranged at the upper part, and the hinged part of the second rotating piece and the stool surface mechanism is arranged at the lower part, the two foot rods are positioned above when rotating to the horizontal direction along with the first rotating piece; when the other two foot rods rotate to be horizontal along with the first rotating piece, the two foot rods are oppositely arranged at the lower part.

When the included angle between the first foot rod and the second foot rod is 0 degree, the inner foot rod side plates of the first foot rod and the second foot rod are stacked in a staggered mode, the outer foot rod side plates of the first foot rod and the second foot rod are stacked in a staggered mode, and the first foot rod and the second foot rod can rotate to the horizontal position along with the first rotating piece and are located inside the stool surface mechanism; when the included angle between the third leg rod and the fourth leg rod is 0 degree, the inner leg rod side plates of the third leg rod and the fourth leg rod are stacked in a staggered mode, the outer leg rod side plates of the third leg rod and the fourth leg rod are stacked in a staggered mode, and the third leg rod and the fourth leg rod can rotate to the horizontal position along with the second rotating piece and are located inside the stool surface mechanism; meanwhile, the first foot bar and the second foot bar are positioned above the third foot bar and the fourth foot bar. The two foot rods at the same end are firstly closed and then turned to the inside of the stool surface mechanism to form complete storage. Because the foot rods adopt a structure with three surfaces surrounding and one surface opened, when the opening surfaces of the two foot rods are opposite and close to each other, the foot rods can be almost completely overlapped, and the foot rods can be put in even if the internal space of the stool surface mechanism is narrow; in the existing sawhorses, the foot rods are still exposed after being folded, and one important reason is that the two foot rods cannot be completely closed, the width of the stool surface mechanism is limited, and the foot rods are clamped outside.

Preferably, a positioning pin transversely penetrates through the middle of the first rotating member, the positioning pin is exposed out of part of the first rotating member and sleeved with the spring part, meanwhile, the front side plate or the rear side plate is provided with a positioning hole matched with the positioning pin, the telescopic end of the positioning pin can be embedded into the positioning hole, two positioning holes are arranged, one positioning hole is positioned below the first rotating shaft, and the other positioning hole is transversely aligned with the first rotating shaft; the upper part of the second rotating piece vertically extends to form a connecting part, the connecting part transversely penetrates through a positioning pin, part of the positioning pin exposed out of the connecting part is sleeved with the spring piece, meanwhile, the front side plate or the rear side plate is provided with two positioning holes matched with the positioning pin, one of the two positioning holes is positioned above the third rotating shaft, and the other positioning hole is transversely aligned with the third rotating shaft. The positioning holes at different positions are used for stably keeping the folding and unfolding states of the foot rod. The hinged part of the foot rod and the rotating piece is positioned at the lower edge of the stool surface mechanism, and because the hinged part of the first rotating piece and the side plate is a position which is more inclined to the upper end, the height of the first rotating piece is about three quarters of the height of the stool surface mechanism, and the first rotating piece can not be blocked when rotating; meanwhile, a positioning pin can be arranged in the middle of the first rotating member; the hinged part of the second rotating member and the side plate is arranged at the lower part, the height of the second rotating member is approximately one third of the height of the stool surface mechanism, no redundant structure is provided for installing a positioning pin, and therefore an extending part is added for installing the positioning pin for the second rotating member.

Preferably, the upper end of the inner foot rod of the first foot rod is hinged to the second rotating shaft, a limiting part for limiting the unfolding angle of the first foot rod is arranged at the hinged position, the upper end of the inner foot rod of the second foot rod is hinged to the second rotating shaft, and a limiting part for limiting the unfolding angle of the second foot rod is arranged at the hinged position; the second rotating shaft is close to the lower edge of the stool surface mechanism; when the first foot rod and the second foot rod are unfolded, the upper end of the limiting piece can be abutted against the lower edge of the stool surface mechanism; the upper end of the inner foot rod of the third foot rod is hinged to the fourth rotating shaft, a limiting part used for limiting the unfolding angle of the third foot rod is arranged at the hinged position, the upper end of the inner foot rod of the fourth foot rod is hinged to the fourth rotating shaft, and a limiting part used for limiting the unfolding angle of the fourth foot rod is arranged at the hinged position; the fourth rotating shaft is close to the lower edge of the stool surface mechanism; when the third foot rod and the fourth foot rod are unfolded, the upper end of the limiting piece can be abutted against the lower edge of the stool surface mechanism. The limiting piece can be a U-shaped bent plate, two ends of the opening are respectively clamped at two sides of the upper end of the foot rod and connected to the corresponding rotating shafts, and when the foot rod is spread, the U-shaped piece is abutted between the first rotating piece and the foot rod; when the foot rods are closed, the U-shaped piece is folded together and is stored in the stool surface mechanism.

Preferably, right-angle brackets are arranged at two ends of the stool surface mechanism, each right-angle bracket is formed by vertically connecting a horizontal part and an upward extending vertical part, the horizontal part is fixedly connected to the end part of the stool surface mechanism, and an object placing space is formed between the end part of the stool surface mechanism and the vertical part. After the two parallel sawing stools are arranged side by side, long-strip wood and wood boards are erected by utilizing the right-angle brackets, and a square platform can be formed in a combined mode.

Preferably, the middle part of the stool panel is provided with a downward sunken area which is connected with the handle; the handle is in a strip shape, and two ends of the handle are fixedly connected with two ends of the sunken area through fasteners. The fastener can adopt the screw, or bolt and nut cooperation use, utilizes the handle can be convenient carry the sawing bench, portable and shift.

Preferably, a folding connecting rod piece is hinged between the lifting positioning mechanism of the first foot rod and the lifting positioning mechanism of the second foot rod, and the folding connecting rod piece is formed by hinging a first connecting rod and a second connecting rod; the folding connecting rod piece in the folded state is positioned in a space formed by the first foot rod and the second foot rod; the folding connecting rod piece is hinged between the lifting positioning mechanism of the third foot rod and the lifting positioning mechanism of the fourth foot rod and is formed by hinging a first connecting rod and a second connecting rod, and the folding connecting rod piece is positioned in a space formed by the third foot rod and the fourth foot rod. The first connecting rod and the second connecting rod which form the folding connecting rod piece are bending rods and have small-amplitude bending, moreover, the foot rod side plates connected with the first connecting rod and the foot rod side plates connected with the second connecting rod are not positioned on the same side but positioned on different two sides, the folding connecting rod is connected in an inclined mode, and meanwhile, the folding connecting rod can be contained in the two foot rods after being folded.

Preferably, the lower ends of the outer foot rods of the first foot rod, the second foot rod, the third foot rod and the fourth foot rod are all connected with foot rod protective sleeves; the lower ends of the foot rods are prevented from being abraded, the foot rods are protected, the anti-skidding effect is improved, and the use is safer.

To sum up, compared with the prior art, the utility model has the following advantages:

the utility model improves the lifting structure of the foot rod, improves the relative inserting direction of the positioning plug-in and the lifting positioning hole, leads the matching of the two to be more compact, has small space and leads the whole structure of the foot rod to be more stable; the structure of the pressing plate is improved, so that the moment is changed, the positioning plug-in and the lifting positioning hole can generate larger distance by pressing to form smaller-amplitude rotation, and the problem that the positioning plug-in collides with the foot rod is not easy to generate during lifting operation, so that the operation is smooth; the utility model improves the folding structure of the foot rods and adopts a structure with three sides surrounding and one side opening, when the opening surfaces of the two foot rods are opposite and close to each other, the foot rods can be almost completely overlapped, even if the internal space of the stool surface mechanism is narrow, the foot rods can be put in without being exposed; the utility model distributes the two groups of foot rods which are closed up and down in the stool surface mechanism, and fully and reasonably plans the limited space in the stool surface mechanism; the utility model has a handle, which is convenient for carrying and carrying.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a cross-sectional view of the present invention;

fig. 3 is a bottom view of the present invention;

fig. 4 is a schematic view of the present invention in a folded state;

fig. 5 is a bottom view of the present invention in a folded state;

fig. 6 is a sectional view of the present invention in a folded state;

FIG. 7 is a side view of the foot bar of the present invention;

fig. 8 is a sectional view of the foot bar of the present invention.

The reference numbers in the figures are: 1. a stool panel; 2. a front side plate; 3. a rear side plate; 4. a first rotating shaft; 5. a first rotating member; 6. a second rotating shaft; 7. a first leg bar; 8. a second leg bar; 9. a third rotating shaft; 10. a second rotating member; 11. a fourth rotating shaft; 12. a third leg bar; 13. a fourth leg bar; 14. positioning pins; 15. positioning holes; 16. a limiting member; 17. a right angle bracket; 18. a handle; 19. folding the connecting piece; 20. a foot bar protective sleeve; 31. an inner leg bar; 32. an outer leg bar; 33. lifting and lowering the positioning hole; 41. a bearing plate; 42. a lifting rotating shaft; 43. a torsion spring; 44. pressing the plate; 45. and positioning the plug-in.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

Example 1:

as shown in fig. 1, 2 and 3, a lifting sawing bench mainly comprises a bench surface mechanism and a foot rest; the stool surface mechanism is arranged into a cuboid shell with an opening at the lower part, the stool surface is a long rectangular stool panel 1, the left end of the stool panel 1 is vertically and fixedly connected with a left end plate, the right end of the stool panel 1 is vertically and fixedly connected with a right end plate, the front edge of the stool panel 1 is vertically and fixedly connected with a front side plate 2, and the rear edge of the stool panel 1 is vertically and fixedly connected with a rear side plate 3; the left end plate, the right end plate, the front side plate 2 and the rear side plate 3 all extend downwards relative to the stool panel 1.

The middle part of the stool panel 1 is provided with a rectangular downward concave area which is connected with a handle 18; the handle 18 is in the shape of a band, and both ends of the handle 18 are fixedly connected to both ends of the recessed area by screws.

Two ends of the stool surface mechanism are respectively fixed with a right-angle bracket 17, and the right-angle bracket 17 is formed by vertically connecting a horizontal part and an upward extending vertical part; specifically, each right angle bracket 17 comprises two parallel L templates, and the one end fixed connection of L template is in preceding curb plate 2 and posterior lateral plate 3, connects the diaphragm between the other end of L template, then forms recessed storage space between the tip of bench face mechanism and the right angle bracket 17.

The left end of the stool surface mechanism, the upper part of the front side plate 2 and the upper part of the rear side plate 3 are vertically connected with a first rotating shaft 4, the first rotating shaft 4 is hinged with a first rotating piece 5, and the height of the first rotating piece 5 is approximately three-fourths of the height of the stool surface mechanism.

The lower end of the first rotating member 5 is connected with a second rotating shaft 6, the axial direction of the second rotating shaft 6 is consistent with the axial direction of the stool panel 1, and the second rotating shaft 6 is simultaneously hinged with a first foot rod 7 and a second foot rod 8.

A positioning pin 14 transversely penetrates through the middle part of the first rotating member 5, the positioning pin 14 extends towards the front side plate 2, the positioning pin 14 is exposed out of part of the ring sleeve spring part of the first rotating member 5, meanwhile, two positioning holes 15 are formed in the front side plate 2, one positioning hole 15 is formed in the upper part of the front side plate 2 and is located at the same height with the first rotating shaft 4, and when the first rotating member 5 rotates to be horizontal, the positioning pin 14 is connected with the positioning hole 15; another positioning hole 15 is formed in the lower portion of the front side plate 2, and the positioning pin 14 is attached to the positioning hole 15 when the first rotating member 5 is turned to the vertical direction.

The right end of the stool surface mechanism, a third rotating shaft 9 is vertically connected between the lower part of the front side plate 2 and the lower part of the rear side plate 3, a second rotating part 10 is hinged on the third rotating shaft 9, and the height of the second rotating part 10 is approximately half of the height of the stool surface mechanism.

The lower end of the second rotating member 10 is connected with a fourth rotating shaft 11, the axial direction of the fourth rotating shaft 11 is the same as the axial direction of the stool panel 1, and the fourth rotating shaft 11 is simultaneously hinged with a third leg rod 12 and a fourth leg rod 13; the second rotating shaft 6 and the fourth rotating shaft 11 are close to the lower edge of the stool surface mechanism.

A connecting part vertically extends from the upper part of the second rotating member 10, the connecting part transversely penetrates through a positioning pin 14, the positioning pin 14 extends towards the front side plate 2, the part of the positioning pin 14 exposed out of the connecting part is sleeved with a spring part, meanwhile, two positioning holes 15 are formed in the front side plate 2, one positioning hole 15 is formed in the upper part of the front side plate 2, and when the second rotating member 10 rotates to be horizontal, the positioning pin 14 is connected with the positioning hole 15; another positioning hole 15 is formed in the lower portion of the front side plate 2, and the positioning pin 14 is attached to the positioning hole 15 when the second rotating member 10 is turned to the vertical direction.

The first foot bar 7, the second foot bar 8, the third foot bar 12 and the fourth foot bar 13 have the same structure; each foot rod is formed by sleeving an inner foot rod 31 positioned on the inner side and an outer foot rod 32 positioned on the outer side, and the inner foot rod 31 is positioned on the outer foot rod 32; the inner foot rod 31 is formed by vertically connecting an inner foot rod main board and inner foot rod side boards on two sides, and the cross section of the inner foot rod 31 is U-shaped; the outer foot rod 32 is formed by vertically connecting an outer foot rod main board and outer foot rod side boards on two sides, and the cross section of the outer foot rod 32 is U-shaped; the lower ends of the outer foot rods of the first foot rod 7, the second foot rod 8, the third foot rod 12 and the fourth foot rod 13 are all connected with a foot rod protective sleeve 20.

A plurality of hollow lifting positioning holes 33 which are arranged in a row at intervals are formed in the inner leg main board of the inner leg 31, and a lifting positioning mechanism is fixed at the upper end of the outer leg 32; specifically, the lift positioning mechanism includes two parallel bearing plates 41 with shaft holes, two bearing plates 41 are fixed on the lateral plates of the outer leg rods on both sides respectively, a lift rotating shaft 42 is connected in the shaft holes of two bearing plates 41, the lift rotating shaft 42 is located on the outer side of the main plate of the outer leg rods, a torsion spring 43 is connected to the lift rotating shaft 42 in a sleeving manner, a pressing plate 44 is connected to the lift rotating shaft 42, a shaft sleeve is arranged on the surface of the pressing plate 44, and the plate is movably connected to the lift rotating shaft 42 through the shaft sleeve.

As shown in fig. 7 and 8, for convenience of description, the foot bar is in a vertical state; the pressing plate 44 is a bent plate, the upper part of the pressing plate is a vertical flat plate, the flat plate abuts against the side wall of the outer leg rod 32, a positioning plug-in 45 is vertically fixed in the middle of the flat plate, the positioning plug-in 45 protrudes vertically outwards relative to the flat plate and extends towards the direction of the lifting positioning hole 33, and the positioning plug-in 45 passes through the side wall of the outer leg rod 32 and can be vertically inserted into the lifting positioning hole 33 of the inner leg rod 31; the lower end of the flat plate is connected with an inclined plate which inclines downwards, the lower end of the inclined plate is connected with another vertical flat plate, the inclined plate positioned in the middle is fixed on the lifting rotating shaft, the vertical flat plate positioned in the lower part is used as a pressing part, and the pressing part is parallel to the side wall of the outer foot rod 32 and forms a space, so that the pressing is convenient; alternatively, the pressing portion may be configured to expand obliquely with respect to the sidewall of the outer portion 32, increasing the moment, and reducing the pressing force and pressing amplitude.

As shown in fig. 4, 5 and 6, the first leg bar 7 and the second leg bar 8 are hinged with each other, and the opening surfaces thereof are opposite; when the first foot bar 7 and the second foot bar 8 are closed to form an included angle of 0 degree, the inner foot bar side plates of the first foot bar 7 and the second foot bar 8 are staggered and stacked, the outer foot bar side plates of the first foot bar 7 and the second foot bar 8 are staggered and stacked, and the closed first foot bar 7 and the closed second foot bar 8 can rotate to a horizontal position along with the first rotating piece 5 and are located inside the stool surface mechanism.

The third leg rod 12 and the fourth leg rod 13 are hinged with each other, and the opening surfaces of the third leg rod and the fourth leg rod are opposite; when the third leg rod 12 and the fourth leg rod 13 are folded to form an included angle of 0 degree, the inner leg rod side plates of the third leg rod 12 and the fourth leg rod 13 are stacked in a staggered mode, and the outer leg rod side plates of the third leg rod 12 and the fourth leg rod 13 are stacked in a staggered mode; the third leg rod 12 and the fourth leg rod 13 which are closed together can rotate to the horizontal position along with the second rotating piece 10 and are positioned in the stool surface mechanism; the first leg bar 7 and the second leg bar 8 are located above the third leg bar 12 and the fourth leg bar 13.

The hinged parts of the first foot rod 7 and the second foot rod 8 and the first rotating member 5, namely the first rotating shaft 4, are also hinged with two U-shaped limiting members 16, the U-shaped limiting members 16 are connected to the outer sides of the upper ends of the foot rods, and the limiting members 16 are used for limiting the unfolding angles of the first foot rod 7 and the second foot rod 8; the hinged parts of the third leg rod 12 and the fourth leg rod 13 and the second rotating member 10, namely the fourth rotating shaft 11, are further hinged with two U-shaped limiting members 16, the U-shaped limiting members 16 are connected to the outer sides of the upper ends of the leg rods, and the limiting members 16 are used for limiting the unfolding angles of the third leg rod 12 and the fourth leg rod 13. When the foot rods are unfolded, the U-shaped limiting piece 16 is abutted between the first rotating piece 5 and the foot rods; when the leg rods are closed, the U-shaped limiting piece 16 is closed together and is contained in the stool surface mechanism.

A folding connecting rod piece 19 is hinged between the middle part of the first foot rod 7 and the middle part of the second foot rod 8, and the folding connecting rod piece 19 is formed by hinging a first connecting rod and a second connecting rod; the folding connecting rod piece 19 in a folded state is positioned in a space formed by the first foot rod 7 and the second foot rod 8; the folding connecting rod piece 19 is hinged between the middle part of the third foot rod 12 and the middle part of the fourth foot rod 13, the folding connecting rod piece 19 is formed by hinging a first connecting rod and a second connecting rod, and the folding connecting rod piece 19 in a folding state is positioned in a space formed by the third foot rod 12 and the fourth foot rod 13. The first connecting rod and the second connecting rod are bending rods with small bending amplitude, the foot rod side plates respectively connected with the first connecting rod and the second connecting rod are not positioned on the same side but positioned on two different sides, the folding connecting rod 19 is obliquely connected, and meanwhile, the folding connecting rod can be stored in the two foot rods after being folded.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims (10)

1. A lifting sawing stool comprises a stool surface mechanism at the upper part and a foot rest for supporting the stool surface mechanism, and is characterized in that the foot rest comprises at least three foot rods, each foot rod is formed by sleeving an inner foot rod (31) positioned at the inner side and an outer foot rod (32) positioned at the outer side, the upper end of each inner foot rod is connected with the stool surface mechanism, a plurality of lifting positioning holes (33) which are arranged in a row at intervals are formed in one side wall of each inner foot rod, and a lifting positioning mechanism is arranged on the side wall of the upper end of each outer foot rod;

the lifting positioning mechanism comprises two parallel bearing plates (41) with shaft holes, a lifting rotating shaft (42) is connected in the shaft holes of the two bearing plates, a torsion spring (43) is sleeved on the lifting rotating shaft, a pressing plate (44) is connected to the lifting rotating shaft, a positioning plug-in (45) is arranged on the pressing plate relative to the part above the lifting rotating shaft, the positioning plug-in protrudes vertically relative to the pressing plate and extends towards the direction of the lifting positioning hole, the positioning plug-in penetrates through the side wall of the outer foot rod and can be inserted into the lifting positioning hole of the inner foot rod vertically, the part below the lifting rotating shaft of the pressing plate is arranged to be a pressing part, the pressing part is parallel to the side wall of the outer foot rod and forms a space, or the pressing part inclines outwards relative to the side.

2. The elevating stool as set forth in claim 1, wherein the pressing plate is provided as a flat plate parallel to the side wall of the outer leg, the middle portion of the flat plate being movably connected to the elevating shaft, and the lower portion of the flat plate serving as a pressing portion; or, press the plate and set up to the board of buckling, its upper portion is vertical dull and stereotyped, and a downward hang plate of slope is connected to the lower extreme of this dull and stereotyped, and another vertical dull and stereotyped is connected to the lower extreme of this hang plate, and the hang plate swing joint that is located the middle part is in the lift pivot, and the vertical dull and stereotyped that is located the lower part is as pressing the portion.

3. The elevating sawing bench according to claim 2, wherein the inner leg comprises an inner leg main plate, inner leg side plates vertically connected to both sides of the inner leg main plate, the inner leg has a U-shaped cross section, and the positioning holes are formed in the inner leg main plate; the outer foot rods comprise outer foot rod main boards and outer foot rod side boards which are vertically connected to the two sides of the outer foot rod main boards, and the cross sections of the outer foot rods are U-shaped; two parallel bearing plates are respectively fixedly connected to the outer foot rod side plates on two sides of the outer foot rod, and the rotating shaft, the torsional spring and the pressing plate are located on the outer side of the outer foot rod main plate.

4. The lifting saw bench as claimed in claim 1, 2 or 3, wherein the bench surface mechanism comprises an elongated rectangular bench panel (1), a left end plate vertically connected to the left edge of the bench panel, a right end plate vertically connected to the right edge of the bench panel, a front side plate (2) vertically connected to the front edge of the bench panel, and a rear side plate (3) vertically connected to the rear edge of the bench panel, wherein the left end plate, the right end plate, the front side plate and the rear side plate all extend downward relative to the bench panel; a first rotating shaft (4) is vertically connected between the upper part of the front side plate and the upper part of the rear side plate at the left end of the stool surface mechanism, a first rotating part (5) is hinged on the first rotating shaft, the lower end of the first rotating part is connected with a second rotating shaft (6), the axial direction of the second rotating shaft is consistent with the axial direction of the stool panel, and two leg rods, namely a first leg rod (7) and a second leg rod (8), are simultaneously hinged on the second rotating shaft;

a third rotating shaft (9) is vertically connected between the lower part of the front side plate and the lower part of the rear side plate at the right end of the stool surface mechanism, a second rotating part (10) is hinged on the third rotating shaft, the lower end of the second rotating part is connected with a fourth rotating shaft (11), the axial direction of the fourth rotating shaft is consistent with the axial direction of the stool panel, and two leg rods, namely a third leg rod (12) and a fourth leg rod (13), are simultaneously hinged on the fourth rotating shaft;

the surface of the first foot bar opening is opposite to the surface of the second foot bar opening, and the surface of the third foot bar opening is opposite to the surface of the fourth foot bar opening;

when the included angle between the first foot rod and the second foot rod is 0 degree, the inner foot rod side plates of the first foot rod and the second foot rod are stacked in a staggered mode, the outer foot rod side plates of the first foot rod and the second foot rod are stacked in a staggered mode, and the first foot rod and the second foot rod can rotate to the horizontal position along with the first rotating piece and are located inside the stool surface mechanism; when the included angle between the third leg rod and the fourth leg rod is 0 degree, the inner leg rod side plates of the third leg rod and the fourth leg rod are stacked in a staggered mode, the outer leg rod side plates of the third leg rod and the fourth leg rod are stacked in a staggered mode, and the third leg rod and the fourth leg rod can rotate to the horizontal position along with the second rotating piece and are located inside the stool surface mechanism; meanwhile, the first foot bar and the second foot bar are positioned above the third foot bar and the fourth foot bar.

5. The lifting bench according to claim 4, wherein a positioning pin (14) is transversely inserted through the middle of the first rotary member, the positioning pin is exposed out of a part of the ring sleeve spring part of the first rotary member, and positioning holes (15) matched with the positioning pin are formed in the front side plate or the rear side plate, so that the telescopic ends of the positioning pin can be inserted into the positioning holes, and two positioning holes are formed, one of the positioning holes is positioned below the first rotary shaft, and the other positioning hole is transversely aligned with the first rotary shaft; the upper part of the second rotating piece vertically extends to form a connecting part, the connecting part transversely penetrates through a positioning pin, part of the positioning pin exposed out of the connecting part is sleeved with the spring piece, meanwhile, the front side plate or the rear side plate is provided with two positioning holes matched with the positioning pin, one of the two positioning holes is positioned above the third rotating shaft, and the other positioning hole is transversely aligned with the third rotating shaft.

6. The lifting sawing bench according to claim 5, characterized in that the upper end of the inner foot bar of the first foot bar is hinged to the second rotating shaft, and a limiting piece (16) for limiting the unfolding angle of the first foot bar is arranged at the hinged position, the upper end of the inner foot bar of the second foot bar is hinged to the second rotating shaft, and a limiting piece for limiting the unfolding angle of the second foot bar is arranged at the hinged position; the second rotating shaft is close to the lower edge of the stool surface mechanism; when the first foot rod and the second foot rod are unfolded, the upper end of the limiting piece can be abutted against the lower edge of the stool surface mechanism; the upper end of the inner foot rod of the third foot rod is hinged to the fourth rotating shaft, a limiting part used for limiting the unfolding angle of the third foot rod is arranged at the hinged position, the upper end of the inner foot rod of the fourth foot rod is hinged to the fourth rotating shaft, and a limiting part used for limiting the unfolding angle of the fourth foot rod is arranged at the hinged position; the fourth rotating shaft is close to the lower edge of the stool surface mechanism; when the third foot rod and the fourth foot rod are unfolded, the upper end of the limiting piece can be abutted against the lower edge of the stool surface mechanism.

7. The elevating sawing bench as claimed in claim 4, wherein right angle brackets (17) are provided at both ends of the bench surface mechanism, and the right angle brackets are formed by vertically connecting a horizontal portion and an upwardly extending vertical portion, wherein the horizontal portion is fixedly connected to the end portion of the bench surface mechanism, and an article holding space is formed between the end portion of the bench surface mechanism and the vertical portion.

8. The elevating saw bench of claim 4 wherein the bench deck has a downwardly concave area in the middle thereof, the area being connected to the handle (18); the handle is in a strip shape, and two ends of the handle are fixedly connected with two ends of the sunken area through fasteners.

9. The lifting stool as claimed in claim 6, wherein a folding link member (19) is hinged between the lifting positioning mechanism of the first foot bar and the lifting positioning mechanism of the second foot bar, and the folding link member is formed by hinging a first link and a second link; the folding connecting rod piece in the folded state is positioned in a space formed by the first foot rod and the second foot rod; the folding connecting rod piece is hinged between the lifting positioning mechanism of the third foot rod and the lifting positioning mechanism of the fourth foot rod and is formed by hinging a first connecting rod and a second connecting rod, and the folding connecting rod piece is positioned in a space formed by the third foot rod and the fourth foot rod.

10. The elevating stool as set forth in claim 9, wherein the lower ends of the outer legs of the first, second, third and fourth legs are connected to leg protection covers (20).

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