CN211967774U

CN211967774U - Lifting saw bench with foot pad

Info

Publication number: CN211967774U
Application number: CN201922352414.1U
Authority: CN
Inventors: 盛晶; 何占丰; 王荣民; 李宝; 荆彦鹏; 黄永平; 潘鹏; 邱向军
Original assignee: Jinhua Yahu Tools Co Ltd
Current assignee: Jinhua Yahu Tools Co Ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-11-20
Anticipated expiration: 2029-12-24

Abstract

The utility model relates to a take lift saw bench of callus on sole, including bench face, foot pole, its characterized in that, the lower extreme of foot pole is provided with the support callus on the sole, support the callus on the sole include with the callus on the sole main part, set up in the callus on the sole main part and the bearing spare of relative epirelief, connect in the axle of bearing spare, the axle is connected with the foot pole, supports the callus on the sole and can overturn for the foot pole. The utility model adds the relatively turnable supporting foot pad at the lower end of the foot rod, when the foot rod is unfolded to form the support, although the foot rod is relatively static, the supporting foot pad can rotate with small amplitude along with the concave-convex condition of the ground so as to achieve the purpose of attaching to the ground and stably supporting; simultaneously, including the leg pole with the outer leg pole cup joint the position and add lift positioning mechanism, mainly drive the interlude location of location plug-in components by the upset of the rotating member that the three-section was buckled, simultaneously, still increased the locking piece in the rotating member outside, the locking piece is as dual fail-safe structure, further improves the fastness of location.

Description

Lifting saw bench with foot pad

Technical Field

The utility model belongs to carpenter's instrument, concretely relates to take lift saw bench of callus on sole.

Background

The sawing bench is used for supporting wood during woodworking operation, and is used independently under most conditions. But also can be combined and used in a split mode, and the combination and the use are usually realized by using a plurality of long-strip timbers and plane boards, and finally combined to form a working platform. In order to realize the purpose of splicing, brackets are additionally arranged at two ends of the sawing stool. In order to adapt to different working heights, the foot rods of the sawing stool can be lifted, and a common lifting structure is formed by sleeving an inner foot rod and an outer foot rod and matching an elastic buckle by a positioning hole. Feedback is used through practice, the lifting structure stability of the elastic buckle type is not enough, and the foot rod is shaken.

In order to ensure the support stability of the foot rods, the foot rods are generally inclined and expanded outwards relative to the stool surface when being unfolded; meanwhile, in order to maintain the support level, the lower end surface of the foot bar contacting the ground is inclined at an obtuse angle with respect to the foot bar itself, and the lower end of the foot bar is parallel with respect to the ground only when the foot bar is unfolded to form the support. This type of leg bar, when used on flat ground, presents no problems. However, when the support is used on a slightly uneven ground or a ground with a certain inclination, a stable support cannot be formed.

Disclosure of Invention

The utility model mainly aims at the problems of the foot rods, the invention provides a lifting sawing stool with foot pads, wherein the lower end of the foot rods is additionally provided with a relatively turnable supporting foot pad, when the foot rods are unfolded to form a support, the supporting foot pads can rotate in a small range along with the concave-convex condition of the ground to achieve the purposes of attaching to the ground and stably supporting; meanwhile, the lifting positioning mode of the foot rods is improved, a lifting positioning mechanism is additionally arranged at the sleeved position of the inner foot rod and the outer foot rod, the positioning plug-in is driven to be inserted and positioned by overturning of three sections of bent rotating pieces, and meanwhile, a locking piece is additionally arranged on the outer side of each rotating piece and serves as a double-safety structure, so that the positioning firmness is further improved; when the lifting adjustment is carried out, two operations are needed, the locking piece on the outer side is unlocked firstly, and then the rotating piece is turned over to enable the positioning plug-in unit to be separated from the positioning hole.

The above technical problem of the present invention can be solved by the following technical solutions: the utility model provides a take lift saw bench of callus on sole, includes the bench face, supports the foot pole of bench face, its characterized in that, the lower extreme of foot pole is provided with the support callus on the sole, support the callus on the sole include with the callus on the sole main part of ground contact, set up in the callus on the sole main part and the bearing spare of relative epirelief, connect in the axle of bearing spare, the axle is connected with the foot pole, the support callus on the sole can overturn for the foot pole.

Preferably, the foot pad main body is a plate, two opposite sides of the foot pad main body are provided with bearing pieces which are relatively vertically protruded upwards, and the upper parts of the bearing pieces are provided with bearing holes; the lower extreme of foot pole is located between two bearing spare, through the rotatory articulated of axle formation between two bearing spare and the foot pole to the lower extreme of foot pole sets to relative bellied arc limit or relative bellied arc curved surface, and this arc limit or arc curved surface can with the face contact up of callus on the sole main part.

Preferably, the lower end of the same foot rod and two opposite sides of the same foot rod are respectively provided with a foot pad main body and a bearing part, the bearing part is arranged on one side, close to the foot rod, of the foot pad main body and protrudes upwards relatively, the bearing part is hinged to one side of the lower end of the foot rod through a shaft, and a gap is formed between the lower end of the foot rod and the ground.

Preferably, the surface of the footbed body facing downward and contacting the ground is provided with a concave-convex anti-slip layer.

Preferably, the foot rods are formed by sleeving an inner foot rod and an outer foot rod inside and outside, a plurality of positioning holes are arranged on the side wall of the inner foot rod at intervals, a positioning hole is arranged on the side wall of the outer foot rod close to the upper end of the outer foot rod, and a lifting positioning mechanism is arranged between the inner foot rod and the outer foot rod.

The lifting positioning mechanism comprises a base arranged at the upper end of the outer foot rod, a rotating part hinged to the base, a positioning plug-in part arranged on the rotating part and extending towards the direction of the positioning hole of the inner foot rod, a torsion spring arranged between the rotating part and the base, and a rotating locking part located on the outer side of the rotating part and hinged to the base, wherein the rotating locking part is provided with a relatively convex eccentric cam part, and the eccentric cam part is abutted to the side wall of the outer foot rod.

Preferably, the base of the lifting positioning mechanism is provided with two parallel bearing plates, hinge holes are formed in the bearing plates, and pin shafts are connected in the hinge holes; the rotating part of the lifting positioning mechanism is provided with three sections of bent plates, namely a first section of plate, a second section of plate and a third section of plate from top to bottom; the first section of plate piece is bent upwards relative to the second section of plate piece and extends and the first section of plate piece extends towards the direction of keeping away from the outer foot rod, and the third section of plate piece is bent downwards relative to the second section of plate piece and extends and the third section of plate piece extends towards the outer foot rod.

Preferably, the positioning plug-in is arranged on the first section of plate member, and the positioning plug-in is arranged as a rod member vertically protruding relative to the first section of plate member; the positioning plug-in can penetrate through the positioning hole in the outer foot rod and then be inserted into the positioning hole in the inner foot rod.

Under the effect of torsional spring, the upper end of rotating member is close to the foot pole, and the foot pole is kept away from to the lower extreme of rotating member, when adjusting the foot pole and going up and down, needs the manual third section plate of pressing the rotating member, makes first section plate upwarp, then location plug-in components break away from the locating hole.

Preferably, the lifting positioning mechanism is provided with a plate at the upper part of the rotary locking piece, and rod pieces extending downwards from two side edges of the plate at the lower part, and the lower ends of the rod pieces are provided with eccentric cam pieces; the eccentric cam piece is provided with a hinge hole and is hinged to the pin shaft on the base, and meanwhile, the eccentric cam piece is abutted to the side wall of the outer foot rod; when the rotary locking piece is turned upwards, the upper part of the rotary locking piece pushes the first section of plate to be close to the outer foot rod so that the positioning plug-in is inserted into the positioning hole; when the rotary locking piece is turned downwards, the rotary locking piece pushes the third section of plate to be close to the outer foot rod and the first section of plate to be far away from the outer foot rod, so that the positioning plug-in is separated from the positioning hole. The rotary locking piece is a second locking structure covering the outer side of the rotary piece, and can be turned over only by using a large force due to the action of the eccentric cam, and the rotary locking piece is locked when turned over upwards and unlocked when turned over downwards.

Preferably, the stool surface 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; the left end of the stool surface is rotatably hinged with two supporting leg rods through a hinge mechanism, and the right end of the stool surface is rotatably hinged with two supporting leg rods through a hinge mechanism. The stool surface is a cuboid cavity with an open lower part, and the foot rods can be completely contained in the stool surface after being folded.

Preferably, the middle part of the stool panel is provided with a concave part, and the concave part is provided with a handle convenient for carrying.

Preferably, brackets are arranged at two ends of the stool surface; each bracket comprises two parallel L-shaped bent plate pieces, each plate piece is formed by vertically connecting a horizontal part and an upward extending vertical part, a strip plate piece is arranged between the upper ends of the vertical parts of the two plate pieces, and the outer ends of the horizontal parts of the two plate pieces are respectively fixedly connected to the end part of the front side plate and the end part of the rear side plate; an object placing space is formed between the bracket and the end part of the stool surface. After the two sawing stools are placed side by side, long-strip wood is lapped on the bracket to form a horizontal supporting frame, and a table board is placed on the horizontal supporting frame to form a workbench.

Preferably, the right-angle part of the L-shaped plate of the bracket, which is located at the outer side, is provided with a section of inclined edge, and a hollow plate is fixedly connected between two parallel inclined edges, and the surface of the hollow plate is provided with a plurality of hollow holes.

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

the utility model adds the relatively turnable supporting foot pad at the lower end of the foot rod, when the foot rod is unfolded to form the support, although the foot rod is relatively static, the supporting foot pad can rotate with small amplitude along with the concave-convex condition of the ground so as to achieve the purpose of attaching to the ground and stably supporting; the utility model improves the lifting and positioning mode of the foot rods, a lifting and positioning mechanism is added at the sleeve joint part of the inner foot rod and the outer foot rod, and the rotating part of the lifting and positioning mechanism is turned over under the torsion action of the torsional spring, thereby driving the positioning plug-in components to alternate and position in the positioning holes; meanwhile, a locking piece is additionally arranged on the outer side of the rotating piece, the locking piece is further stably inserted and positioned by utilizing the overturning limit of the cam, the structure is a double-insurance structure, and the positioning of the foot rod is firmer; the utility model discloses when going up and down to adjust, must have two operations, the locking piece in the earlier unblock outside, the revolving part that overturns makes location plug-in components break away from the locating hole again.

Drawings

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

FIG. 2 is a schematic view of the support mat of the present invention;

FIG. 3 is a cross-sectional view of the support foot pad of the present invention;

FIG. 4 is a cross-sectional view of a second embodiment of the support footbed of this invention;

fig. 5 is a schematic view of the locking state of the elevating positioning mechanism of the present invention;

fig. 6 is a schematic view of an unlocked state of the lift positioning mechanism of the present invention;

FIG. 7 is a cross-sectional view of the leg and the elevating positioning mechanism of the present invention;

fig. 8 is a schematic view of the present invention in a folded state.

The reference numbers in the figures are: 1. a stool surface; 11. a stool panel; 12. a front side plate; 13. a rear side plate; 2. a foot bar; 21. an inner leg bar; 22. an outer leg bar; 23. positioning holes; 3. a lifting positioning mechanism; 31. a base; 32. a rotating member; 33. positioning the plug-in; 34. a torsion spring; 4. a rotation lock; 41. an eccentric cam member; 5. a handle; 6. a bracket; 61. an inclined edge; 62. a hollowed-out plate; 7. supporting the foot pad; 71. a foot pad main body; 72. a bearing member; 73. a shaft; 74. and an anti-slip layer.

Detailed Description

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

Example 1:

as shown in fig. 1, 7 and 8, the lifting woodworking sawing bench mainly comprises a bench surface 1 and foot rods 2; bench face 1 sets up to the open cuboid cavity in lower part, mainly includes bench panel 11, the perpendicular left end board of connecting in 11 left edges of bench panel, the perpendicular right end board of connecting in 11 right edges of bench panel, the perpendicular front side board 12 of connecting in 11 front edges of bench panel, the perpendicular posterior lateral plate 13 of connecting in 11 back edges of bench panel of the perpendicular connection of bench panel, left end board, right end board, front side board 12, 13 homogeneous phases of posterior lateral plate extend downwards for 11 relative bench panels.

The middle part of the stool panel 11 is provided with a concave part which is connected with a handle 5 convenient for carrying.

The left end of the stool surface is respectively fixed with a bearing seat at the end part of the front side plate 12 and the end part of the rear side plate 13, and each bearing seat is hinged with a support rod 2 through a pin shaft; the right end of the stool surface is respectively fixed with a bearing seat at the end part of the front side plate 12 and the end part of the rear side plate 13, and each bearing seat is hinged with a support rod 2 through a pin shaft.

Two ends of the stool surface are respectively fixed with a right-angle bracket 6; each bracket 6 comprises two parallel L-shaped bent plate pieces, each plate piece is formed by vertically connecting a horizontal part and an upward extending vertical part, a strip plate piece is arranged between the upper ends of the vertical parts of the two plate pieces, and the outer ends of the horizontal parts of the two plate pieces are respectively fixedly connected with the end part of the front side plate 12 and the end part of the rear side plate 13; a section of inclined edge 61 is arranged at the right-angle part of the L-shaped plate positioned at the outer side, meanwhile, a hollow plate 62 is fixedly connected between the two sections of parallel inclined edges 61, and the surface of the hollow plate 62 is provided with a plurality of square hollow holes; an object placing space is formed between the bracket 6 and the end part of the stool surface and is used for overlapping wood.

The foot rod 2 is formed by sleeving an inner foot rod 21 and an outer foot rod 22 inside and outside, the inner foot rod 21 and the outer foot rod 22 are both hollow square tubes, or the inner foot rod 21 and the outer foot rod 22 are both square tubes with half-openings and U-shaped cross sections; the front side of the inner foot rod 21 facing forward is provided with 6-10 positioning holes 23 which are arranged at intervals; the front-forward side wall of the outer leg rod 22 close to the upper end is provided with a positioning hole 23, and the positioning holes 23 can be aligned with the positioning holes 23 on the inner leg rod 21 one by one.

The sleeve joint parts of the inner foot rod 21 and the outer foot rod 22 are provided with lifting positioning mechanisms; as shown in fig. 5 and 6, the elevation positioning mechanism is mainly composed of a base 31, a rotary member 32, a positioning plug 33, a torsion spring 34, and a rotary locking member 4.

The base 31 is provided with two parallel bearing plates, hinge holes are formed in the bearing plates, pin shafts are connected in the hinge holes, and rotating parts 32 are hinged on the pin shafts; the torsion spring 34 is sleeved on the end of the pin shaft, and the torsion spring 34 is abutted against the base 31 and the rotating member 32.

The rotating part 32 is provided with three sections of bent plates, namely a first section of plate, a second section of plate and a third section of plate from top to bottom; the first section of plate piece is bent upwards relative to the second section of plate piece and extends and the first section of plate piece extends towards the direction of keeping away from the outer foot rod, and the third section of plate piece is bent downwards relative to the second section of plate piece and extends and the third section of plate piece extends towards the outer foot rod.

A short rod-shaped positioning plug 33 is vertically and fixedly connected to the first plate of the rotating member 32, the positioning plug 33 extends toward the positioning hole 23 of the inner leg 21, and the positioning plug 33 can pass through the positioning hole 23 of the outer leg 22 and then be inserted into the positioning hole 23 of the inner leg 21.

The rotation locking member 4 is located outside the rotation member 32, the upper portion of the rotation locking member 4 is a plate, the lower portion is a rod extending downward from two side edges of the plate, the lower end of the rod is provided with an eccentric cam member 41, the eccentric cam member 41 is provided with a hinge hole, the eccentric cam member 41 is hinged to a pin shaft on the base 31, and meanwhile, the eccentric cam member 41 abuts against the side wall of the outer leg rod 22.

When the rotary locking piece 4 is turned upwards, the upper part of the rotary locking piece 4 pushes the first plate to be close to the outer leg rod 22 so that the positioning plug-in 33 is inserted into the positioning hole 23; when the rotation locking member 4 is turned downwards, the rotation locking member 4 pushes the third plate member to approach the outer leg 22 and the first plate member to move away from the outer leg 22, so that the positioning plug 33 is disengaged from the positioning hole 23.

Foot pole 2, at the rotatory articulated callus on the sole 7 that supports of lower extreme of outer foot pole 22, it is specific, as shown in fig. 2, 3, it mainly comprises callus on the sole main part 71 and bearing spare 72 to support callus on the sole 7, wherein, callus on the sole main part 71 sets up to rectangular plate spare and four right angle portions and is the fillet, the longer side in the relative both sides in position of callus on the sole main part 71 has the bearing spare 72 of relative perpendicular epirelief, bearing spare 72 is the roughly board that is triangle-shaped, the upper portion apex angle department of bearing spare 72 has the dead eye, connecting axle 73 in the dead eye, axle 73 can adopt structures such as pin, rivet.

The lower end of the outer leg 22 is located between the two bearing members 72, and meanwhile, the two opposite side walls of the outer leg 22 close to the lower portion are symmetrically provided with mounting holes, so that the two bearing members 72 and the outer leg 22 are rotatably hinged through the shaft 73.

The lower ends of the two side walls at the lower ends of the outer leg rods 22, which are opposite to each other, are relatively convex arc-shaped edges, and the arc-shaped edges can be contacted with the upward surface of the foot pad main body 71; moreover, the hinged part of the outer foot rod 22 and the supporting foot pad 7 is closer to the side of the outer foot rod 22, which is back to the stool surface 1; an uneven anti-slip layer 74 is fixed to the surface of the mat body 71 facing downward and contacting the ground.

In practical application, when the leg rods 2 are in a folded state, the supporting foot pads 7 are turned and close to the side walls of the outer leg rods 22 back to the stool surface 1 until the side walls are attached to the stool surface; when the foot rods 2 are unfolded and supported, the supporting foot pads 7 are gradually turned downwards to be far away from the side wall of the outer foot rod 22, back to the stool surface 1, and then are turned downwards to be parallel to the ground; if when using on uneven ground, support callus on the sole 7 and can carry out the rotation adjustment of scope down according to the actual conditions on ground to laminating and reaching the stable support with ground as far as possible.

Example 2:

compared with the embodiment 1, the present embodiment is different in that the supporting foot pad 7 is formed by vertically connecting a foot pad main body 71 and a bearing member 72 on one side as shown in fig. 4; the lower end and two opposite sides of the same outer foot rod 22 are respectively hinged with a foot pad main body 71 and a bearing piece 72, and the bearing piece 72 is positioned on one side of the foot pad main body 71 close to the outer foot rod 22 and is relatively convex upwards; the bearing piece 72 is hinged to one side of the lower end of the outer foot rod 22 through a shaft, and a gap is formed between the lower end of the outer foot rod 22 and the ground; the surface of the mat body 71 facing downward and contacting the ground has a concave-convex shaped anti-slip layer 74.

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

1. The utility model provides a take lift saw bench of callus on sole, includes bench face (1), supports foot pole (2) of bench face, its characterized in that, the lower extreme of foot pole is provided with supports callus on the sole (7), supports the callus on the sole and include with the callus on the sole main part (71) of ground contact, set up in the callus on the sole main part and relative epirelief bearing spare (72), connect in axle (73) of bearing spare, the axle is connected with the foot pole, it can overturn for the foot pole to support the callus on the sole.

2. The elevating sawing stool with foot pad as set forth in claim 1, wherein the foot pad main body is provided as a plate member having relatively vertically convex bearing members at opposite sides thereof, and the upper portion of the bearing member has a bearing hole; the lower extreme of foot pole is located between two bearing spare, through the rotatory articulated of axle formation between two bearing spare and the foot pole to the lower extreme of foot pole sets to relative bellied arc limit or relative bellied arc curved surface, and this arc limit or arc curved surface can with the face contact up of callus on the sole main part.

3. The elevating sawing stool with foot pad as set forth in claim 1, wherein a foot pad main body and a bearing member are respectively disposed at the lower end of the same foot bar and at the opposite sides, the bearing member is disposed at one side of the foot pad main body close to the foot bar and is relatively protruded upward, the bearing member is hinged to one side of the lower end of the foot bar through a shaft, and a gap is formed between the lower end of the foot bar and the ground.

4. The lifting stool with foot pad as claimed in claim 2 or 3, wherein the surface of the foot pad main body facing downwards and contacting the ground is provided with a concave-convex anti-slip layer (74).

5. The lifting sawing stool with the foot pads as claimed in claim 1, 2 or 3, characterized in that the foot rods are formed by sleeving an inner foot rod (21) and an outer foot rod (22) in and out, the side wall of the inner foot rod is provided with a plurality of positioning holes (23) which are arranged at intervals, the side wall of the outer foot rod close to the upper end is provided with a positioning hole, and a lifting positioning mechanism (3) is arranged between the inner foot rod and the outer foot rod; the lifting positioning mechanism comprises a base (31) arranged at the upper end of the outer foot rod, a rotating part (32) hinged to the base, a positioning plug-in part (33) arranged on the rotating part and extending towards the direction of the positioning hole of the inner foot rod, a torsion spring (34) arranged between the rotating part and the base, and a rotating locking part (4) located on the outer side of the rotating part and hinged to the base, wherein the rotating locking part is provided with a relatively convex eccentric cam part (41), and the eccentric cam part is abutted to the side wall of the outer foot rod.

6. The lifting sawing stool with the foot pads according to claim 5, wherein the base of the lifting positioning mechanism is provided with two parallel bearing plates, hinge holes are formed in the bearing plates, and pin shafts are connected in the hinge holes; the rotating part is provided with three sections of bent plates, namely a first section of plate, a second section of plate and a third section of plate from top to bottom; the first section of plate piece is bent upwards relative to the second section of plate piece and extends and the first section of plate piece extends towards the direction of keeping away from the outer foot rod, and the third section of plate piece is bent downwards relative to the second section of plate piece and extends and the third section of plate piece extends towards the outer foot rod.

7. The padded lift bench of claim 6 wherein the locating insert is disposed on the first panel segment, the locating insert being disposed as a bar projecting vertically relative to the first panel segment; the positioning plug-in can penetrate through the positioning hole in the outer foot rod and then be inserted into the positioning hole in the inner foot rod.

8. The elevating stool with a footpad as set forth in claim 7, wherein the elevating positioning means has a rotary locking member whose upper portion is provided as a plate and whose lower portion is provided as a rod member extending downward from both side edges of the plate, the rod member having an eccentric cam at its lower end; the eccentric cam piece is provided with a hinge hole and is hinged to the pin shaft on the base, and meanwhile, the eccentric cam piece is abutted to the side wall of the outer foot rod; when the rotary locking piece is turned upwards, the upper part of the rotary locking piece pushes the first section of plate to be close to the outer foot rod so that the positioning plug-in is inserted into the positioning hole; when the rotary locking piece is turned downwards, the rotary locking piece pushes the third section of plate to be close to the outer foot rod and the first section of plate to be far away from the outer foot rod, so that the positioning plug-in is separated from the positioning hole.

9. The liftable sawing bench with foot pads as claimed in claim 1, 2 or 3, wherein the bench surface comprises an elongated rectangular bench panel (11), 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 (12) vertically connected to the front edge of the bench panel, and a rear side plate (13) 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 downwards relative to the bench panel; the left end of the stool surface is rotatably hinged with two leg rods through a hinge mechanism, and the right end of the stool surface is rotatably hinged with two leg rods through a hinge mechanism; the middle part of the stool panel is provided with a sunken part which is provided with a handle (5) convenient for carrying.

10. The elevating sawing bench with foot rest as claimed in claim 9, characterized in that the two ends of the bench surface are provided with brackets (6); each bracket comprises two parallel L-shaped bent plate pieces, each plate piece is formed by vertically connecting a horizontal part and an upward extending vertical part, a strip plate piece is arranged between the upper ends of the vertical parts of the two plate pieces, and the outer ends of the horizontal parts of the two plate pieces are respectively fixedly connected to the end part of the front side plate and the end part of the rear side plate; an object placing space is formed between the bracket and the end part of the stool surface; the right-angle part of the L-shaped plate of the bracket, which is positioned on the outer side, is arranged into a section of inclined edge (61), meanwhile, a hollow plate (62) is fixedly connected between the two parallel inclined edges, and the surface of the hollow plate is provided with a plurality of hollow holes.