CN101219630B

CN101219630B - Magnetic central truckle

Info

Publication number: CN101219630B
Application number: CN2008100007310A
Authority: CN
Inventors: 冯煤山
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-01-15
Filing date: 2008-01-15
Publication date: 2010-06-09
Anticipated expiration: 2028-01-15
Also published as: CN101219630A

Abstract

The invention discloses a magnetic absorption controlling trundle and the relationship between a spring elastic force and a magnetic force of a magnetic block, belonging to a mechanical field. The magnetic force is used in machinery. An enclosing cover is locked with a left external cover and a right external cover; the left and the right external covers are movably connected with a hollow vertical shaft, and the hollow vertical shaft is movably connected with a gear-changing cam; the gear-changing cam is against and pressed by a pulling rod; after sleeved with a spring, the pulling rod is welded with an upper umbrella gear; the spring is tightly fixed with a step of the hollow vertical shaft and a step of the pulling rod; the hollowing vertical shaft is connected with a bearing of a bracket body which is tightly fixed with an arc block and movably connected with an S shape slideway through a bolt; the magnetic block is inlaid with a lower umbrella gear and inserted with an arc brake block which is tightly fixed with a brake pad; the upper umbrella gear and the lower umbrella gear are articulated with each other; the bracket body is connected with a trundle shaft which is movably connected with the trundle. The spring lifts the upper umbrella gear upward, and the upper umbrella gear and the lower umbrella gear keep a distance of articulation detachment; the spring elastic force is larger than the gravity and magnetic force of the magnetic block as well as the gravity and resistance of a connecting spare part, and the magnetic force of the magnetic block is larger than the weight of the magnetic block as well as the gravity and resistance of the connecting spare part. The invention is used as the trundle of a medical bed. The invention can solve the contradiction between multifunction and small size of the trundle.

Description

Control castor in magnetic-type

Technical field

The control castor related to field of mechanical technique during the present invention was magnetic-type; Be particularly related to medical field of mechanical technique; Relate in particular to the field of mechanical technique of medical operation casters; Be specifically related to magnetic-type middle control castor technical field.

Background technology

In the technical field of medical operation bed, castor all is installed on the underframe of medical operation bed, this castor possesses walking, retreats, turns, keeps straight on, directly moves back, in the stop, lifting, decline, variable block, big turnings, little turning, turnon left, right-hand corner, walking about in turning, retreating about turn and must fixation when operating and make smooth and easy the carrying out of performing the operation with this ... wait all multi-functional; Because this multi-functional popularity of castor and under limited bulk and the little circumscribed characteristic requirement of volume, when making, need will be numerous all small parts be contained in the limited volume, bother so it is made very; Being applied to medical operation bed caster wheel at present can say so varied, but all be to make an issue of in the angle of machinery, and carried out multinomial patent application, as on September 28th, 2004 be 200420096362.7 with application number, name is called " mobile medical car; bed brake equipment ", on May 23rd, 2005 was 200520018760.1 with application number, name is called " hydraulic jacking device of castor ", on July 25th, 2005 was 200520114755.0 with application number, name is called " brake facing of medical bed castor ", on August 23rd, 2005 was 200520104188.0 with application number, name is called " the circulation variable block cam on the medical castor ", on September 13rd, 2005 was 200520118753.9 with application number, name is called " being provided with spacing spring; parallel set screw; the installation cover caster wheel ", on November 23rd, 2006 was 200620160435.3 with application number, name is called " middle control castor ", and on May 11st, 2002 was 200530013710.X with the application number, on July 15th, 2005 was 200530139787.1 with application number, on July 15th, 2005 was 200530139788.6 with application number, on November 15th, 2006 was 200630098771.5 with application number, on November 30th, 2007 was 200730327833.X with the application number, title is " castor " ... Deng; Above-mentioned various prior arts, although in the technical field of castor, once did many-sided improvement and raising, but for castor, be technological improvement and the raising done at mechanical angle, all the time the thinking and the idea that do not have unconventional machinery, all the time do not solve the contradiction between the little limitation of its multi-functional popularity and volume, all the time exist the little and part making that cause of volume more, install, the trouble of maintenance, the making selection is strict, the cost of manufacture height, and use and owe flexible, be out of order easily, it is attractive in appearance that outward appearance is owed ... etc. many deficiencies, defective and drawback, in view of applicant's expertise with the many years of experience of being engaged in industry work and to the excelsior pursuit of cause, to take the key problem in technology of magnetic attraction, developed " control castor in magnetic-type " new product and " relation of spring force and magnetic block magnetic force " thereof, thus, the present invention is exactly in fully and in earnest investigation, understand, analyze, sum up the deficiency of above-mentioned prior art, on defective and the drawback basis, for making the deficiency of its existence, defective and drawback are solved, and special topic is succeeded in developing.

Summary of the invention

The purpose of this invention is to provide a kind of magnetic-type middle control castor, its capping and left overcoat and right overcoat buckle, left side overcoat and right overcoat slide with the hollow vertical shaft and rotate to live and be connected, the hollow vertical shaft is lived with the variable block cam rotation and is connected, variable block cam and pull bar roof pressure, the drag link sleeve spring, pull bar and the welding of last umbrella tooth, the step of spring upper end and hollow vertical shaft cavity, the step of lower end and pull bar is fastening, the hollow vertical shaft is lived with the stake body bearing and is connected, and stake body and arc piece are fastening, and stake body is lived by latch with the S shape slideway of magnetic block and is connected, magnetic block and subumbrella tooth are inlayed, magnetic block and the horizontal plug-in mounting of arc brake piece, arc brake piece and brake facing are fastening, last umbrella tooth and the interlock of subumbrella tooth, the axis hole of stake body is connected by axle sleeve with caster axle, and caster axle is lived with the castor bearing and is connected.

Described magnetic-type middle control castor, to go up the umbrella tooth by spring mentions, under the magnetic action of the elastic force of spring and magnetic block, feasible upward umbrella tooth and subumbrella tooth can remain the distance that breaks away from interlocking pattern, the elastic force of its spring with relation between the magnetic force of magnetic block is: the elastic force of its spring greater than on the gravity of the magnetic force and magnetic block self of magnetic block and the magnetic block be connected the gravity of parts and the friction drag sum of last cunning, the magnetic force of its magnetic block greater than on the gravity of magnetic block self and the magnetic block be connected the gravity of parts and the friction drag sum of last cunning.

The purpose that the present invention reaches is: with the new approaches of magnetic attraction, new concept and solve machinery technical matters, developing is applied to magnetic attraction the beginning of machine manufacture, take the key problem in technology of magnetic attraction, " control castor in magnetic-type " new product and " relation of spring force and magnetic block magnetic force " thereof is provided, solve the contradiction between the little limitation of multi-functional popularity of castor and volume, solve many deficiencies that prior art exists, defective and drawback reach the little and compact conformation and scientific and reasonable of the volume that makes product, effect equalization stable and flexibility and reliability, help selecting manufacturing materials, the production technology program standard is standardized and is helped assembling and use, final products are elegant in appearance, purposes such as whole cost is low and easy to utilize.The present invention can accomplish the end in view.

For achieving the above object, technical scheme provided by the invention is:

A kind of magnetic-type middle control castor among the present invention mainly is made of capping, left overcoat, right overcoat, hollow vertical shaft, variable block cam, pull bar, last umbrella tooth, spring, stake body, arc piece, magnetic block, S shape slideway, subumbrella tooth, arc brake piece, brake facing, caster axle, castor;

Described magnetic-type middle control castor, its capping and left overcoat and right overcoat are connected in the mode of buckle, its left overcoat and right overcoat are connected to slide up and down and to rotate ways of connecting alive with the hollow vertical shaft, its hollow vertical shaft is connected to rotate ways of connecting alive with the variable block cam, its variable block cam is connected with the mode of pull bar with roof pressure, be set with spring on its pull bar, its pull bar and the welding of last umbrella tooth, the step that is provided with in the upper end of its spring and the hollow vertical shaft cavity, and the step of lower end and pull bar all is fastenedly connected, its hollow vertical shaft rotates to live by bearing with the cylinder of stake body and is connected, its stake body and arc piece are fastenedly connected by fastener, its stake body is lived by the latch slip with the S shape slideway on the magnetic block and is connected, the upper surface of its magnetic block is inlayed with the subumbrella tooth and is connected, slide with the horizontal plug-in mounting of arc brake piece to live and be connected in the lower surface of its magnetic block, the lower surface and the brake facing of its arc brake piece are fastenedly connected by fastener, umbrella tooth and subumbrella tooth are connected on it, the axis hole that its stake body lower end is provided with is connected by axle sleeve with caster axle, and its caster axle is rotated to live by bearing with castor and is connected.

Described magnetic-type middle control castor, described capping is the lid-like that is provided with centre hole, described left overcoat, right overcoat is the trapezoidal semicircle cavity rotation structure that the lower end is provided with the castor protecting cover, this mirror-image structure caster wheel protecting cover is dome shape structure, this left side overcoat and this right side overcoat are mirror-image structure, described hollow vertical shaft is the Cylindorical rod shape structure that is provided with step in the cavity, the circular cam shape structure that described variable block cam is a ratchet-like, described pull bar is that upper end section is thin and the lower end section is thick, constitute the hexagonal prism body shape structure of step between thickness, the described umbrella tooth of going up, the subumbrella tooth is the umbrella dentalation, described spring is a spring-like structures, described stake body is that upper end section is cylindric and the lower end section is the structure of plate, the lower end of this plate is provided with axis hole, described arc piece is the block structure of arc, described magnetic block is for being inverted L shaped block structure, the horizontal block side of this L shaped bulk is provided with S shape slideway, this S shape slideway is that side-looking is to S-shaped block structure, described arc brake piece is the block structure of arc, described brake facing is the arc schistose texture, described caster axle is an axle shape structure, and described castor is a wheel-like structure, this castor is provided with tire.

Described magnetic-type in the control castor, described magnetic block is the magnetic block that magnetic material is made, the described umbrella tooth, subumbrella tooth gone up is last umbrella tooth, the subumbrella tooth that the material that can receive magnetic is made.

Principle of work of the present invention and working process are: the present invention in use, because the variable block action of cam: when " salient point surface " of variable block cam when contacting with pull bar, last umbrella tooth and subumbrella tooth are interlocked, S shape slideway on the magnetic block is under the control of latch and glide, magnetic block is in the position of nadir, magnetic block lower end arc brake piece bonded assembly brake facing and castor with the mode of roof pressure contact, brake facing with castor kill, castor can't be movable.When " the concave point face " of variable block cam when contacting with pull bar, under the effect of " spring " " elastic force ", haul on the pull bar and move, pull bar drives to go up on the umbrella tooth and moves, last umbrella tooth and subumbrella tooth break away from the state of interlock, but, because last umbrella tooth is to be made by " can receive the material of magnetic ", make by " magnetic material " owing to magnetic block again, so, although last umbrella tooth and subumbrella tooth have broken away from the state of interlock, but just because of the effect of " magnetic force ", magnetic block still can make to drive under the control of S shape slideway at latch under " magnetic force " effect and slide on the magnetic block, when sliding into the position that is limited on the magnetic block, just stop to go up sliding, and the distance of umbrella tooth and subumbrella tooth disengaging interlocking pattern is gone up in maintenance; On above-mentioned, slip over the principle explanation in the journey, the elastic force of spring " greater than " just can make magnetic block drive " going up sliding " that it connects parts so be connected the gravity sum of parts on the gravity of the magnetic force of magnetic block and the friction drag and magnetic block self of last cunning and the magnetic block, simultaneously, the magnetic force of magnetic block " greater than " be connected the gravity sum of parts on the gravity of going up sliding friction drag and magnetic block self and the magnetic block; Under the effect of the elastic force of spring and magnetic block magnetic force and since magnetic block go up sliding and S shape slideway and the distance that latch control is limited down, make and go up the distance that umbrella tooth and subumbrella tooth remain the disengaging interlocking pattern; Because going up of magnetic block is sliding, magnetic block drives on the arc brake piece and moves on the bonded assembly brake facing, brake facing breaks away from the roof pressure to castor, thereby castor is free to advance or retreat.The distance of brake facing and castor is adjustable, and as can be seen from Figure 3, the distance of brake facing and castor is realized by the screw on the magnetic block.The principle of work of the invention described above and working process have proved absolutely " solving the technical matters of machinery, the beginning that developing is applied to magnetic attraction machine manufacture with the new approaches of magnetic attraction, new concept ", take magnetic attraction key problem in technology, novelty, creativeness, the practicality of " control castor in magnetic-type " new product are provided, promote far reaching significances such as technical progress of industry.

Owing to adopted technical scheme provided by the invention, make the present invention compare with existing known technology, obtained following beneficial effect:

1, since the present invention be provided with umbrella tooth, subumbrella tooth and on umbrella tooth and subumbrella tooth be connected, thereby obtained the beneficial effect that last umbrella tooth and subumbrella tooth not only can be interlocked but also can separate.

2, because the present invention is provided with the variable block cam, thus obtained can variable block beneficial effect.

3,, thereby obtained to make beneficial effect such as cunning or downslide on the pull bar because the present invention is provided with variable block cam, pull bar, spring.

4, because the magnetic block that the present invention is provided with spring, makes by the last umbrella tooth that can receive the magnetic force material to make and subumbrella tooth, by magnetic material, thereby obtained " solving the technical matters of machinery, the beginning that developing is applied to magnetic attraction machine manufacture " with the new approaches of magnetic attraction, new concept, take magnetic attraction key problem in technology, novelty, creativeness, the practicality of " control castor in magnetic-type " new product are provided, promote beneficial effects such as far reaching significance such as technical progress of industry.

5, because the present invention has determined a kind of spring force of magnetic-type middle control castor and the relation of magnetic block magnetic force, and application magnetic-type middle control castor as previously discussed; Thereby obtained by spring by pull bar will go up the umbrella tooth mention, under the magnetic action of the elastic force of spring and magnetic block, make umbrella tooth and subumbrella tooth can remain the distance of disengaging interlocking pattern, the elastic force of its spring with relation between the magnetic force of magnetic block is: the elastic force of its spring greater than on the gravity of the magnetic force and magnetic block self of magnetic block and the magnetic block be connected the gravity of parts and the friction drag sum of last cunning, the magnetic force of its magnetic block greater than on the gravity of magnetic block self and the magnetic block be connected the beneficial effect of the friction drag sum of the gravity of parts and last cunning.

6, because above-mentioned each bar of the present invention is described, thereby obtain to solve contradiction between the multi-functional popularity of castor and the little limitation of volume, solved the beneficial effects such as many deficiencies, defective and drawback of prior art existence.

7, because above-mentioned each bar of the present invention is described, thus obtained to make the little and compact conformation of the volume of castor product and scientific and reasonable, effect equalization stable and flexibility and reliability, help selecting manufacturing materials, the standardization of production technology program standard and help assembling, beneficial effect such as final products are elegant in appearance, whole cost is low and easy to utilize and the relation of spring force and magnetic block magnetic force is scientific and reasonable and ingenious and effective and reliable and stable.

Description of drawings

Fig. 1 is the blast schematic perspective view of " control castor in magnetic-type " structure in the specific embodiment of the invention.Be the schematic perspective views of each parts before assembling.

Fig. 2 is the schematic top plan view of " control castor in magnetic-type " magnetic block of product, the S shape slideway on the magnetic block, subumbrella tooth, arc brake piece, brake facing in the specific embodiment of the invention.

Fig. 3 is that the A-A of Fig. 2 is to generalized section.By Fig. 2 and Fig. 3, can be to " control castor in magnetic-type " magnetic block of product, S shape slideway, subumbrella tooth, arc brake piece, brake facing and the position between them on the magnetic block and complete the embodying of connection state among the present invention.

Fig. 4 is the schematic top plan view of " control castor in magnetic-type " product in the specific embodiment of the invention.

Fig. 5 is that the B-B of Fig. 4 is to scheme drawing; It is the generalized section of " control castor in magnetic-type " product in the specific embodiment of the invention.Can be by Fig. 1, Fig. 2, Fig. 3, Fig. 4 and this figure to " control castor in magnetic-type " complete on the whole embodying of product among the present invention; Also " spring force of control castor and the relation of magnetic block magnetic force in magnetic-type " can be demonstrated fully out simultaneously.

Label among the figure: 1, capping, 2, left overcoat, 3, right overcoat, 4, hollow vertical shaft, 5, the variable block cam, 6, pull bar, 7, go up the umbrella tooth, 8, spring, 9, stake body, 10, arc piece, 11, magnetic block, 111, S shape slideway, 12, subumbrella tooth, 13, the arc brake piece, 14, brake facing, 15, caster axle, 16, castor.

The specific embodiment

Below in conjunction with Figure of description, the present invention is described in detail.Shown in Figure of description: a kind of magnetic-type middle control castor mainly is made of capping 1, left overcoat 2, right overcoat 3, hollow vertical shaft 4, variable block cam 5, pull bar 6, last umbrella tooth 7, spring 8, stake body 9, arc piece 10, magnetic block 11, S shape slideway 111, subumbrella tooth 12, arc brake piece 13, brake facing 14, caster axle 15, castor 16;

Described magnetic-type middle control castor, its capping 1 and left overcoat 2 and right overcoat 3 are connected in the mode of buckle, its left overcoat 2 and right overcoat 3 are connected to slide up and down and to rotate ways of connecting alive with hollow vertical shaft 4, its hollow vertical shaft 4 is connected to rotate ways of connecting alive with variable block cam 5, its variable block cam 5 is connected with the mode of pull bar 6 with roof pressure, be set with spring 8 on its pull bar 6, its pull bar 6 and last umbrella tooth 7 welding, the step that is provided with in the upper end of its spring 8 and hollow vertical shaft 4 cavities, and the step of lower end and pull bar 6 all is fastenedly connected, its hollow vertical shaft 4 rotates to live by bearing with the cylinder of stake body 9 and is connected, its stake body 9 and arc piece 10 are fastenedly connected by fastener, its stake body 9 is lived by the latch slip with the S shape slideway 111 on the magnetic block 11 and is connected, the upper surface of its magnetic block 11 is inlayed with subumbrella tooth 12 and is connected, slide with arc brake piece 13 horizontal plug-in mountings to live and be connected in the lower surface of its magnetic block 11, the lower surface of its arc brake piece 13 and brake facing 14 are fastenedly connected by fastener, umbrella tooth 7 is connected with subumbrella tooth 12 on it, the axis hole that its stake body 9 lower ends are provided with and caster axle 15 are connected by axle sleeve, and its caster axle 15 is connected by bearing rotation work with castor 16.

Described magnetic-type middle control castor, described capping 1 is for being provided with the lid-like of centre hole, described left overcoat 2, right overcoat 3 is the trapezoidal semicircle cavity rotation structure that the lower end is provided with the castor protecting cover, this mirror-image structure caster wheel protecting cover is dome shape structure, this left side overcoat 2 is a mirror-image structure with this right side overcoat 3, described hollow vertical shaft 4 is for being provided with the Cylindorical rod shape structure of step in the cavity, the circular cam shape structure that described variable block cam 5 is a ratchet-like, described pull bar 6 is thick for the thin lower end of upper end section section, constitute the hexagonal prism body shape structure of step between thickness, the described umbrella tooth 7 of going up, subumbrella tooth 12 is the umbrella dentalation, described spring 8 is a spring-like structures, described stake body 9 is the structure that cylindric lower end section is plate for upper end section, the lower end of this plate is provided with axis hole, described arc piece 10 is the block structure of arc, described magnetic block 11 is for being inverted L shaped block structure, the horizontal block side of this L shaped bulk is provided with S shape slideway 111, this S shape slideway 111 is that side-looking is to S-shaped block structure, described arc brake piece 13 is the block structure of arc, described brake facing 14 is the arc schistose texture, described caster axle 15 is an axle shape structure, and described castor 16 is a wheel-like structure, this castor is provided with tire.

Described magnetic-type in the control castor, the magnetic block 11 that described magnetic block 11 is made for magnetic material, described on umbrella tooth 7, subumbrella tooth 12 be last umbrella tooth 7, the subumbrella tooth 12 that the material that can receive magnetic is made.

The present invention has carried out property on probation examination after making and finishing, and through examination on probation, has obtained the good result of expection.

The above is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction; But the those of ordinary skill of all industry is all implemented with the above shown in the by specification accompanying drawing swimmingly; In every case change, modification and the differentiation of making not breaking away from technical solution of the present invention is equivalent embodiment of the present invention, all still belongs in the scope of technical scheme of the present invention.

Claims

1. a magnetic-type middle control castor is characterized in that: mainly be made of capping (1), left overcoat (2), right overcoat (3), hollow vertical shaft (4), variable block cam (5), pull bar (6), last umbrella tooth (7), spring (8), stake body (9), arc piece (10), magnetic block (11), S shape slideway (111), subumbrella tooth (12), arc brake piece (13), brake facing (14), caster axle (15), castor (16);

Described magnetic-type middle control castor, its capping (1) and left overcoat (2) and right overcoat (3) are connected in the mode of buckle, its left overcoat (2) and right overcoat (3) are connected to slide up and down and to rotate ways of connecting alive with hollow vertical shaft (4), its hollow vertical shaft (4) is connected to rotate ways of connecting alive with variable block cam (5), its variable block cam (5) is connected with the mode of pull bar (6) with roof pressure, be set with spring (8) on its pull bar (6), its pull bar (6) and last umbrella tooth (7) welding, the step that is provided with in upper end of its spring (8) and hollow vertical shaft (4) cavity, and the step of lower end and pull bar (6) all is fastenedly connected, its hollow vertical shaft (4) rotates to live by bearing with the cylinder of stake body (9) and is connected, its stake body (9) is fastenedly connected by fastener with arc piece (10), its stake body (9) is lived by the latch slip with the S shape slideway (111) on the magnetic block (11) and is connected, the upper surface of its magnetic block (11) is inlayed with subumbrella tooth (12) and is connected, slide to live with the horizontal plug-in mounting of arc brake piece (13) and be connected in the lower surface of its magnetic block (11), the lower surface of its arc brake piece (13) and brake facing (14) are fastenedly connected by fastener, umbrella tooth (7) is connected with subumbrella tooth (12) on it, the axis hole that its stake body (9) lower end is provided with is connected by axle sleeve with caster axle (15), and its caster axle (15) is rotated to live by bearing with castor (16) and is connected;

The magnetic block (11) that described magnetic block (11) is made for magnetic material, the described umbrella tooth (7), subumbrella tooth (12) gone up is last umbrella tooth (7), the subumbrella tooth (12) that the material that can receive magnetic is made.

2. magnetic-type middle control castor according to claim 1, it is characterized in that: described capping (1) is for being provided with the lid-like of centre hole, described left overcoat (2), right overcoat (3) is the trapezoidal semicircle cavity rotation structure that the lower end is provided with the castor protecting cover, this mirror-image structure caster wheel protecting cover is dome shape structure, this left side overcoat (2) is a mirror-image structure with this right side overcoat (3), described hollow vertical shaft (4) is for being provided with the Cylindorical rod shape structure of step in the cavity, described variable block cam (5) is the circular cam shape structure of ratchet-like, described pull bar (6) is thick for the thin lower end of upper end section section, constitute the hexagonal prism body shape structure of step between thickness, the described umbrella tooth (7) of going up, subumbrella tooth (12) is the umbrella dentalation, described spring (8) is a spring-like structures, described stake body (9) is the structure that cylindric lower end section is plate for upper end section, the lower end of this plate is provided with axis hole, described arc piece (10) is the block structure of arc, described magnetic block (11) is for being inverted L shaped block structure, the horizontal block side of this L shaped bulk is provided with S shape slideway (111), this S shape slideway (111) is that side-looking is to S-shaped block structure, described arc brake piece (13) is the block structure of arc, described brake facing (14) is the arc schistose texture, described caster axle (15) is an axle shape structure, and described castor (16) is a wheel-like structure, this castor is provided with tire.

3. magnetic-type middle control castor as claimed in claim 1, it is characterized in that: will go up umbrella tooth (7) by spring (8) and mention, under the magnetic action of the elastic force of spring (8) and magnetic block (11), make that going up umbrella tooth (7) can remain the distance that breaks away from interlocking pattern with subumbrella tooth (12), the elastic force of its spring (8) with relation between the magnetic force of magnetic block (11) is: the elastic force of its spring (8) greater than on the gravity of the magnetic force and magnetic block (11) self of magnetic block (11) and the magnetic block (11) be connected the gravity of parts and the friction drag sum of last cunning, the magnetic force of its magnetic block (11) greater than on the gravity of magnetic block (11) self and the magnetic block (11) be connected the gravity of parts and the friction drag sum of last cunning.