CN108969178B

CN108969178B - Solar warm-keeping shoes

Info

Publication number: CN108969178B
Application number: CN201810616657.9A
Authority: CN
Inventors: 彭艳艳; 王政
Original assignee: Zhejiang Industry and Trade Vocational College
Current assignee: Zhejiang Zhuomi Shoes Co ltd
Priority date: 2018-06-14
Filing date: 2018-06-14
Publication date: 2020-07-14
Anticipated expiration: 2038-06-14
Also published as: CN108969178A

Abstract

The invention discloses a solar warm-keeping shoe, which comprises a base, a shoe cover, a storage battery and a solar panel, wherein the base is provided with a mounting groove, the shoe cover is provided with a mounting plate at the sole position, the mounting plate is movably connected with the mounting groove, an electric heating device is arranged in the mounting plate, the electric heating device is mutually coupled with the storage battery and the solar panel, the mounting plate is provided with a plurality of heat dissipation holes, an elastic supporting component is arranged in the mounting groove, the elastic supporting component drives the mounting plate to pop out of the mounting groove, when the foot sweats a lot during use, one end of the mounting plate, which is clamped with the mounting groove, is unfastened, the elastic supporting component supports the mounting plate, so that the mounting plate and the mounting groove have a gap, hot air in the shoe cover is dissipated through the heat dissipation, further accelerating the evaporation of moisture.

Description

Solar warm-keeping shoes

Technical Field

The invention relates to the technical field of shoes, in particular to a solar warm-keeping shoe.

Background

In winter, due to cold winter, when the temperature does not fall to a certain temperature in dormitories or offices of some schools, the body can wear clothes to achieve the effect of keeping warm, and the feet are only provided with socks and slippers at most, so that the feet are easily frostbitten, and people can use equipment such as a foot warmer; present warm foot equipment electric heat foot equipment is mostly an global design, the specific exercises are to generating heat with the bottom, both feet are placed on same appearance chamber, the warm foot device of this type can guarantee the constancy of temperature under the condition of low energy consumption, but also have under the comparatively warm condition of foot temperature, the foot is sweated easily, especially after finishing using, its temperature drops rapidly, inside steam becomes steam rapidly, the adhesion is on holding the shoes inside lining of foot, breed the bacterium easily, there is the stink.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a solar warm-keeping shoe which can dissipate heat in time and keep dry and cool.

In order to achieve the purpose, the invention provides the following technical scheme: a solar warm-keeping shoe comprises a base, a shoe cover, a storage battery and a solar panel, wherein the storage battery and the solar panel are both arranged on the base, the base is provided with a mounting groove, the shoe cover is provided with a mounting plate at the sole position, the mounting plate is movably connected with the mounting groove, an electric heating device is arranged in the mounting plate, the electric heating device is mutually coupled with the storage battery and the solar panel,

a plurality of louvre has been seted up on the mounting panel, and mounting panel one end is articulated with the mounting groove, and this mounting panel other end and mounting groove joint are provided with elastic support component in the mounting groove, and this elastic support component drives the mounting panel and pops out the mounting groove, is provided with dehydrating unit in the mounting groove, and this dehydrating unit is provided with the controller, and this controller starts dehydrating unit after the mounting panel pops out the mounting groove.

As a further improvement of the invention, the elastic support component comprises a telescopic support arm and a limiting part, the side wall of the mounting groove is provided with a telescopic groove and a containing groove, the support arm is arranged in the telescopic groove, the limiting part is arranged in the containing groove, the support arm is composed of a first column body and a first spring part, the first column body is connected with the telescopic groove in a sliding way, one end of the first spring part is connected with the bottom of the telescopic groove, the other end of the first spring part is connected with the first column body, the first spring part has a thrust force towards the groove opening of the telescopic groove on the first column body, the limiting part comprises a first gear and a limiting ratchet, a through groove communicated with the containing groove is arranged on the groove wall of the telescopic groove, one side of the first column body, which faces the through groove, is engaged with the rack through the through groove, the limiting ratchet is used for limiting the first gear to rotate towards, the linking arm is flexible in the mounting groove, the linking arm is provided with the fastener, be provided with spout and draw-in groove on the cell wall of mounting groove, fastener and spout sliding connection, the draw-in groove is the annular that sets up along the inner wall circumference of mounting groove, this annular link up each other with the spout, the mounting groove is close to first gear one end and is provided with the touch panel, the linking arm has cup jointed the second spring part, this second spring part both ends respectively with touch panel and the mutual conflict of fastener, when the fastener passes through the spout and slides, the first gear unidirectional rotation of spacing ratchet restriction, when the fastener card is in the annular, the restriction is removed to first gear to spacing ratchet.

As a further improvement of the present invention, the dehumidifying device includes a fan and a driving motor, the driving motor drives the fan to rotate, the controller is coupled to the driving motor, the controller is a contact switch, the controller is disposed on a groove wall of the mounting groove, when the mounting plate is in contact with the contact switch, the contact switch circuit is not closed, and when the mounting plate is far away from the contact switch, the contact switch is closed.

As a further improvement of the invention, the mounting plate is formed by mutually splicing two transverse plates and two vertical plates, the two vertical plates are arranged between the two transverse plates side by side, the vertical plates and the transverse plates are spliced to form a rectangular plate, the transverse plate far away from one end of the elastic supporting component is provided with an articulated shaft in the length direction, the articulated shaft is rotationally connected with the mounting groove, the two vertical plates are rotationally connected with the transverse plates at one sides far away from each other, at least one connecting rope is arranged between the two vertical plates, when the elastic supporting component supports the mounting plate, the two vertical plates are close to each other to form a gap, two sides of the bottom surface of the shoe cover are respectively adhered with the two vertical plates, the sole surface of the shoe cover is made of elastic material, the shoe cover is provided with.

As a further improvement of the invention, the opening on the bottom surface of the shoe cover is provided with a baffle which comprises an insulating layer and a breathable layer which are arranged up and down, the breathable layer is provided with a plurality of small holes, and after the opening is opened, the small holes on the breathable layer are in an open state.

As a further improvement of the invention, the lower end of the base is provided with a roller groove, and a roller is arranged in the roller groove.

As a further improvement of the invention, the roller groove is provided with a mounting post, the roller is rotationally connected with the mounting post, a second spring part is arranged in the roller groove, the second spring part is elastically connected with the mounting post, the peripheral surface of the roller is provided with a plurality of axial clamping grooves, clamping posts for abutting and limiting are arranged in the roller groove, and when the base is pressed down, the clamping posts are inserted in the clamping grooves to limit the rotation of the roller.

The invention has the beneficial effects that: set up solar panel on with the heat preservation shoes, can be when not using daytime, place the accumulate under the sunshine, make the whole comparison of device energy-conserving, when using, the foot stretches into in the shoe cover, the setting carries out the heat supply at the mounting panel of lower extreme, when the perspiring of foot is more, can untie through mounting panel and mounting groove joint one end, the elastic support subassembly struts and plays the supporting role to the mounting panel, make mounting panel and mounting groove have the clearance, the inside steam of shoe cover passes through the louvre effluvium on the mounting panel, the dehydrating unit who sets up in the mounting groove starts, accelerate the velocity of flow of air current, further accelerate the moisture evaporation.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the base of the present invention when closed;

FIG. 3 is a schematic view of the base of the present invention during its erection;

FIG. 4 is a cross-sectional view of the present invention;

FIG. 5 is a cross-sectional view of the mounting plate and resilient support assembly within the base of the present invention;

FIG. 6 is an enlarged view of the spacing ratchet mounting structure;

fig. 7 is a schematic structural view of the blocking sheet.

1. A base; 2. shoe covers; 3. a storage battery; 4. a solar panel; 5. mounting a plate; 6. an electric heating device; 7. heat dissipation holes; 8. an elastic support member; 9. a dehumidifying device; 10. a support arm; 11. a limiting member; 12. a telescopic groove; 13. accommodating grooves; 14. a first column; 15. a first spring member; 16. a first gear; 17. limiting ratchets; 18. a through groove; 19. a rack; 20. a connecting arm; 21. a fastener; 22. a chute; 23. a card slot; 24. a touch plate; 25. a second spring member; 26. a fan; 27. a drive motor; 28. a controller; 29. a transverse plate; 30. a vertical plate; 31. hinging a shaft; 32. connecting ropes; 33. an opening; 34. a baffle plate; 35. a heat-insulating layer; 36. a breathable layer; 37. a small hole; 38. a roller groove; 39. a roller; 40. mounting a column; 41. a third spring member; 42. a clamping groove; 43. clamping the column; 44. and (4) mounting the groove.

Detailed Description

The invention will be further described in detail with reference to the following examples, which are given in the accompanying drawings.

Referring to fig. 1-7, the solar thermal shoes disclosed in this embodiment comprise a base 1, a shoe cover 2, a storage battery 3, and a solar panel 4, wherein the storage battery 3 and the solar panel 4 are both mounted on the base 1, the storage battery and the solar panel 4 of the base 1 are both disposed on an upper panel of the base 1, a mounting groove 44 is disposed on the base 1, a mounting plate 5 is disposed on the shoe cover 2 at a sole position, the mounting plate 5 is movably connected to the mounting groove 44, an electric heating device 6 is disposed in the mounting plate 5, preferably, the electric heating device 6 is a heating wire, the electric heating device 6 is coupled to the storage battery 3 and the solar panel,

a plurality of louvre 7 has been seted up on mounting panel 5, mounting panel 5 one end is articulated with mounting groove 44, this mounting panel 5 other end and mounting groove 44 joint, elasticity card and draw-in groove structure can be selected to its joint structure, its elasticity card sets up on mounting panel 5, its draw-in groove sets up on the mounting groove 44 lateral wall, the draw-in groove can be deviate from through pressing the elasticity card, be provided with elastic support component 8 in the mounting groove 44, this elastic support component 8 drives mounting panel 5 and pops out mounting groove 44, be provided with dehydrating unit 9 in the mounting groove 44, its dehydrating unit 9 sets up on the bottom surface of mounting groove 44, this dehydrating unit 9 is provided with controller 28, this controller 28 pops out starting dehydrating unit 9 after mounting panel 5 pops out mounting groove.

Set up solar panel 4 on with the heat preservation shoes, can be when daytime not using, place the accumulate under the sunshine, make the whole comparison of device energy-conserving, when using, the foot stretches into in shoe cover 2, the mounting panel 5 that sets up at the lower extreme supplies heat, when the foot perspires more, can untie through mounting panel 5 and mounting groove 44 joint one end, elastic support component 8 struts plays the supporting role to mounting panel 5, make mounting panel 5 and mounting groove 44 have the clearance, 2 inside steam of shoe cover passes through louvre 7 effluvium on the mounting panel 5, the dehumidification device 9 that sets up in the mounting groove starts, accelerate the velocity of flow of air current, further accelerate the moisture evaporation.

As a modified specific embodiment, the elastic supporting component 8 comprises a telescopic supporting arm 10 and a limiting part 11, a telescopic slot 12 and a containing slot 13 are arranged on the side wall of the mounting slot, the supporting arm 10 is arranged in the telescopic slot 12, the limiting part 11 is arranged in the containing slot 13, the supporting arm 10 is composed of a first column 14 and a first spring part 15, the first column 14 is connected with the telescopic slot 12 in a sliding manner, one end of the first spring part 15 is connected with the bottom of the telescopic slot 12, the other end of the first spring part is connected with the first column 14, the first spring part 15 has a pushing force towards the slot opening of the telescopic slot 12 to the first column 14, the limiting part 11 comprises a first gear 16 and a limiting ratchet 17, a through slot 18 communicated with the containing slot 13 is arranged on the slot wall of the telescopic slot 12, a rack 19 is arranged on one side of the first column 14 facing the through slot 18, the first gear 16 is meshed with the rack 19 through the through slot 18, spacing ratchet 17 extends there is connecting arm 20, set up the mounting groove that link up with 1 outer wall of base on the cell wall of holding tank 13, connecting arm 20 is flexible in the mounting groove, connecting arm 20 is provided with fastener 21, be provided with spout 22 and draw-in groove 23 on the cell wall of mounting groove, fastener 21 and spout 22 sliding connection, draw-in groove 23 is the annular that sets up along the inner wall circumference of mounting groove, this annular link up each other with spout 22, the mounting groove is close to first gear 16 one end and is provided with to touch panel 24, connecting arm 20 has cup jointed second spring part 25, this second spring part 25 both ends are contradicted each other with touch panel 24 and fastener 21 respectively, when fastener ratchet slides through spout 22, spacing ratchet 17 restriction first gear 16 unidirectional rotation, when fastener 21 blocks in the annular, spacing ratchet 17 removes the restriction to first gear 16.

The elastic supporting component 8 is accommodated in the telescopic slot 12 in a telescopic way, the notch of the telescopic slot 12 is arranged on the bottom surface of the mounting groove 44, when the mounting plate 5 is embedded in the mounting groove 44, the supporting arm 10 is contracted in the telescopic slot 12, after one end of the mounting plate 5 is manually released from being clamped with the mounting groove 44, the supporting arm 10 jacks up the mounting plate 5 under the deformation elastic force of the first spring piece 15, the mounting plate 5 can be manually lifted when the mounting plate 5 needs to be supported at a higher height, the pressure of the mounting plate 5 on the first spring piece 15 is reduced, in the process that the supporting arm 10 is lifted upwards, the rack 19 drives the first gear 16 to rotate, the limiting ratchet 17 bounces along with the rotation of the first gear 16, after the supporting arm 10 is lifted and positioned, the limiting ratchet 17 limits the reverse rotation of the first gear 16, and further locks the supporting arm 10 at a certain height and cannot be descended due to the pressure deformation of the mounting, when needs are transferred with mounting panel 5, connecting arm 20 through outside pulling spacing ratchet 17, relieve the restriction of spacing ratchet 17 to first gear 16, first gear 16 can rotate in the same time, accomodate support arm 10 in flexible groove 12 under the condition of pressing mounting panel 5, its spacing ratchet 17 is the triangle-shaped structure, its most advanced includes an inclined plane and a perpendicular, accomodate in flexible groove 12 back at the support groove, can be through pulling spacing ratchet 17 to the annular in, rotate 180 degrees, make spacing ratchet 17 restrict the anticlockwise rotation of first gear 16, restriction support arm 10 stretches out flexible groove 12, make when the mistake touches and relieves mounting panel 5 joint one end, support arm 10 can not pop out.

As a modified specific embodiment, the dehumidifying apparatus 9 includes a fan 26 and a driving motor 27, the driving motor 27 drives the fan 26 to rotate, a controller 28 is coupled to the driving motor 27, the controller 28 is a contact switch, the controller 28 is disposed on a groove wall of the mounting groove 44, when the mounting plate 5 contacts with the contact switch, a contact switch circuit is not closed, and when the mounting plate 5 is far away from the contact switch, the contact switch is closed.

Through setting up the contact switch, set up dehydrating unit 9 as the fan 26 with the response of mounting panel 5 open and shut state, its convenient control need not bow in addition and control dehydrating unit 9, sets up more humanized, facilitates the use.

As a modified specific embodiment, the mounting plate 5 is formed by splicing two transverse plates 29 and two vertical plates 30, the two vertical plates 30 are arranged between the two transverse plates 29 side by side, the vertical plates 30 and the transverse plates 29 are spliced into a rectangular plate, the transverse plate 29 at one end far away from the elastic supporting component 8 is provided with a hinge shaft 31 in the length direction, the articulated shaft 31 is rotationally connected with the mounting groove 44, the two vertical plates 30 are rotationally connected with the transverse plate 29 at the sides far away from each other, at least one connecting rope 32 is arranged between the two vertical plates 30, when the mounting panel 5 is propped up by the elastic supporting component 8, the two vertical plates 30 are close to one side to form a gap, the two sides of the bottom surface of the shoe cover 2 are respectively adhered to the two vertical plates 30, the sole surface of the shoe cover 2 is made of elastic material, the shoe cover 2 is provided with an opening 33 on the bottom surface of the shoe cover, and the opening 33 on the bottom surface of the shoe cover 2 is opened when the two vertical plates 30 are opened and closed downwards.

Through setting up mounting panel 5 to the concatenation platelike that can open and shut, when using, when the whole gomphosis of mounting panel 5 is in mounting groove 44, two risers 30 of its mounting panel 5 keep keeping to keep flat and to splice each other, when mounting panel 5 is upspring to be supported by elastic support component 8, two risers 30 are close to each other one side and lose the supporting role down and open formation clearance, through the length of injecing connection rope 32, the clearance that forms when controlling riser 30 to open, this connection rope 32 preferred sets up to high temperature resistance stretch cord, its length can be selected for 1-5cm, and set up opening 33 through the sole one side at shoe cover 2, further accelerate the steam effluvium.

As an improved specific embodiment, the blocking piece 34 is arranged at the opening 33 on the bottom surface of the shoe cover 2, the blocking piece 34 comprises a heat preservation layer 35 and a breathable layer 36 which are arranged up and down, the heat preservation layer 35 is woven by cotton fibers, the breathable layer 36 is woven by polyester fibers, a plurality of small holes 37 are formed in the breathable layer 36, and after the opening 33 is opened, the small holes 37 in the breathable layer 36 are in a state of opening.

Through setting up separation blade 34 from opening 33, can be when two risers 30 of mounting panel 5 are closed, be the shrink state, prevent the heat loss when drying the foot, have certain heat preservation, open at riser 30 and form the clearance after, separation blade 34 receives the dragging, and the aperture 37 on its ventilative layer 36 is opened, accelerates the flow of air current.

As a modified specific embodiment, the lower end of the base 1 is provided with a roller groove 38, and a roller 39 is arranged in the roller groove 38.

The roller groove 38 is arranged on the base 1, so that a user can conveniently drag the base 1 when changing the posture during the use process.

As a modified specific embodiment, the roller groove 38 is provided with a mounting post 40, the roller 39 is rotatably connected with the mounting post 40, the roller groove 38 is internally provided with a second spring member 25, the second spring member 25 is elastically connected with the mounting post 40, the outer peripheral surface of the roller 39 is provided with a plurality of axial clamping grooves 42, the roller groove 38 is internally provided with clamping posts 43 for abutting and limiting, and when the base 1 is pressed down, the clamping posts 43 are inserted in the clamping grooves 42 to limit the rotation of the roller 39.

The roller groove 38 is internally provided with a clamping column 43 for limiting the rotation of the roller 39, when in use and the foot is placed in the shoe cover 2 in a loose way, the base 1 is pressed down the clamping column 43 to limit the rotation of the roller 39 so as to avoid the base 1 from sliding randomly, when the base 1 needs to be moved, the clamping column 43 is separated from the clamping groove 42 after the foot is lifted, the roller 39 rolls, and the structure is simple and convenient to control.

The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims

1. A solar energy warm keeping shoes which is characterized in that: comprises a base (1), shoe covers (2), a storage battery (3) and a solar panel (4), wherein the storage battery (3) and the solar panel (4) are both arranged on the base (1), a mounting groove (44) is arranged on the base (1), a mounting plate (5) is arranged on the shoe covers (2) corresponding to the sole, the mounting plate (5) is movably connected with the mounting groove (44), an electric heating device (6) is arranged in the mounting plate (5), the electric heating device (6) is mutually coupled with the storage battery (3) and the solar panel (4),

a plurality of heat dissipation holes (7) are formed in the mounting plate (5), one end of the mounting plate (5) is hinged to the mounting groove (44), the other end of the mounting plate (5) is connected with the mounting groove (44) in a clamped mode, an elastic supporting component (8) is arranged in the mounting groove (44), the elastic supporting component (8) drives the mounting plate (5) to pop out of the mounting groove (44), a dehumidifying device (9) is arranged in the mounting groove (44), the dehumidifying device (9) is provided with a controller (28), and the controller (28) starts the dehumidifying device (9) after the mounting plate (5) pops out of the mounting groove (44).

2. The solar thermal shoe as claimed in claim 1, wherein: the elastic support assembly (8) comprises a limiting part (11) and a telescopic support arm (10), a telescopic groove (12) and an accommodating groove (13) are formed in the side wall of the mounting groove (44), the support arm (10) is arranged in the telescopic groove (12), the limiting part (11) is arranged in the accommodating groove (13), the support arm (10) is composed of a first cylinder (14) and a first spring part (15), the first cylinder (14) is in sliding connection with the telescopic groove (12), one end of the first spring part (15) is connected with the groove bottom of the telescopic groove (12), the other end of the first spring part is connected with the first cylinder (14), the first spring part (15) has a thrust force to the groove opening of the telescopic groove (12) for the first cylinder (14), the limiting part (11) comprises a first gear (16) and a limiting ratchet (17), a through groove (18) communicated with the accommodating groove (13) is formed in the groove wall of the telescopic groove (12), the first cylinder (14) is provided with a rack (19) towards one side of the through groove (18), the first gear (16) is meshed with the rack (19) through the through groove (18), the limit ratchet (17) is used for limiting the first gear (16) to rotate towards one side of the first spring piece (15), the limit ratchet (17) extends to form a connecting arm (20), a mounting groove communicated with the outer wall of the base (1) is formed in the groove wall of the accommodating groove (13), the connecting arm (20) stretches in the mounting groove, a clamping piece (21) is arranged on the connecting arm (20), a sliding groove (22) and a clamping groove (23) are arranged on the groove wall of the mounting groove (44), the clamping piece (21) is in sliding connection with the sliding groove (22), the clamping groove (23) is a circular groove arranged along the circumferential direction of the inner wall of the mounting groove (44), the circular groove is communicated with the sliding groove (22), a butting and a butting plate (24) is arranged at one end, the connecting arm (20) is sleeved with a second spring part (25), two ends of the second spring part (25) are respectively abutted against the abutting plate (24) and the clamping part (21), when the clamping part (21) slides through the sliding groove (22), the limiting ratchet (17) limits the first gear (16) to rotate in one direction, and when the clamping part (21) is clamped in the annular groove, the limiting ratchet (17) relieves the limitation on the first gear (16).

3. A solar thermal shoe according to claim 1 or 2 wherein: the dehumidifying device (9) comprises a fan (26) and a driving motor (27), the driving motor (27) drives the fan (26) to rotate, the controller (28) is coupled with the driving motor (27), the controller (28) is a contact switch, the controller (28) is arranged on the groove wall of the mounting groove (44), when the mounting plate (5) is in contact with the contact switch, a contact switch circuit is not closed, and when the mounting plate (5) is far away from the contact switch, the contact switch is closed.

4. A solar thermal shoe according to claim 3 wherein: the mounting plate (5) is formed by splicing two transverse plates (29) and two vertical plates (30) mutually, the two vertical plates (30) are arranged between the two transverse plates (29) side by side, the vertical plates (30) and the transverse plates (29) are spliced into a rectangular plate, one end of the elastic supporting component (8) is far away from the transverse plates (29), the transverse plates (29) are provided with articulated shafts (31) in the length direction, the articulated shafts (31) are rotatably connected with the mounting grooves (44), the two vertical plates (30) are rotatably connected with the transverse plates (29) at one side far away from each other, at least one connecting rope (32) is arranged between the two vertical plates (30), when the mounting plate (5) is propped up by the elastic supporting component (8), the two vertical plates (30) are close to one side to form a gap, two sides of the bottom surface of the shoe cover (2) are respectively bonded with the two vertical plates (30), the sole surface, the shoe cover (2) is provided with an opening (33) on the bottom surface of the sole, and the opening (33) on the bottom surface of the shoe cover (2) is opened when the two vertical plates (30) are opened and closed downwards.

5. The solar thermal shoe as claimed in claim 4, wherein: the shoe cover is characterized in that a blocking piece (34) is arranged on an opening (33) in the bottom surface of the shoe cover (2), the blocking piece (34) comprises a heat insulation layer (35) and a breathable layer (36) which are arranged up and down, a plurality of small holes (37) are formed in the breathable layer (36), and after the opening (33) is opened, the small holes (37) in the breathable layer (36) are in an opened state.

6. The solar thermal shoe as claimed in claim 1, wherein: the lower end of the base (1) is provided with a roller groove (38), and a roller (39) is arranged in the roller groove (38).

7. The solar thermal shoe of claim 6, wherein: the roller groove (38) is provided with a mounting column (40), the roller (39) is rotatably connected with the mounting column (40), a third spring part (41) is arranged in the roller groove (38), the third spring part (41) is elastically connected with the mounting column (40), a plurality of axial clamping grooves (42) are formed in the outer peripheral surface of the roller (39), clamping columns (43) for abutting and limiting are arranged in the roller groove (38), and the clamping columns (43) are inserted in the clamping grooves (42) to limit the rotation of the roller (39) when the base (1) is pressed down.