CN108116161B - Gear drive type central control castor control system - Google Patents
Gear drive type central control castor control system Download PDFInfo
- Publication number
- CN108116161B CN108116161B CN201711494835.7A CN201711494835A CN108116161B CN 108116161 B CN108116161 B CN 108116161B CN 201711494835 A CN201711494835 A CN 201711494835A CN 108116161 B CN108116161 B CN 108116161B
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- fluted disc
- bushing
- elastic element
- rack
- bracket
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- 235000004443 Ricinus communis Nutrition 0.000 title claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 238000009434 installation Methods 0.000 claims description 12
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B33/00—Castors in general; Anti-clogging castors
- B60B33/02—Castors in general; Anti-clogging castors with disengageable swivel action, i.e. comprising a swivel locking mechanism
- B60B33/021—Castors in general; Anti-clogging castors with disengageable swivel action, i.e. comprising a swivel locking mechanism combined with braking of castor wheel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B33/00—Castors in general; Anti-clogging castors
- B60B33/0078—Castors in general; Anti-clogging castors characterised by details of the wheel braking mechanism
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B33/00—Castors in general; Anti-clogging castors
- B60B33/02—Castors in general; Anti-clogging castors with disengageable swivel action, i.e. comprising a swivel locking mechanism
- B60B33/025—Castors in general; Anti-clogging castors with disengageable swivel action, i.e. comprising a swivel locking mechanism by using form-fit, e.g. front teeth
Abstract
The invention provides a gear transmission type central control castor control system, which comprises a linkage device, a rotating body, a clamping set and an executing set, wherein the linkage device is connected with the rotating body; the linkage device comprises a hexagonal head, a cam, a hexagonal rod, a fluted disc, a mounting shaft and a bushing; the rotating body comprises a ball bearing, a ball bearing sleeve, a main shaft bearing sleeve and a bracket; the clamping set comprises a baffle, a positioning groove, a half fluted disc, a rotating block, a gear, a rack, a brake block and a stop block; when the fluted disc enters the positioning groove, the trundle is in a straight directional advancing state; when the fluted disc is positioned between the baffle and the connecting piece, the caster is in a universal state, when the fluted disc presses the semi-fluted disc to rotate, the gear rotates, the rack pushes the brake block to move so as to be clamped with the clamping grooves of the left and right rollers, and the brake block is in a braking state; on the premise of ensuring the rapid switching of three states of straight running, universal and braking orientation, the invention utilizes gear transmission, has compact structure, simple assembly, convenient assembly and maintenance and reduces the production cost.
Description
Technical Field
The invention belongs to the field of medical instrument research, in particular to the technical field of machinery of medical operating table casters, and particularly relates to a novel gear transmission type central control caster control system.
Background
At present, with the development of society, especially in the medical industry, the common casters of medical sickbeds, carts and the like are easy to operate, reliable in structure and widely applied. However, with the development of technology, casters are required to be used as secondary accessories for large care facilities such as sickbeds and carts, which requires that the configuration of the internal structure of the casters be simplified, and the original product functions can be realized by fewer accessories, even one or two spare parts.
At present, the central control castor of taiwan with the authorized bulletin number of CN 202656787U has the advantages of complex control system structure, higher cost and more parts; the Chinese patent with the publication number of CN 2860901Y discloses a double-wheel type central control caster, which can realize the three functions at the same time, but has complex structure and high manufacturing cost, and adopts a sliding block and a caulking groove to realize braking, so that the braking strength of the double-wheel type central control caster is lower, the service life is influenced, and the safety performance of the double-wheel type central control caster is seriously even caused. For the above reasons, a need exists for a new type of center-control caster control system; on the premise of meeting the requirements of rapid switching of three states of straight running, universal and braking, the device is compact in structure and simple to assemble.
Disclosure of Invention
The invention aims to provide a gear transmission type central control castor control system aiming at the problems; the device has compact structure, convenient production, installation and maintenance; saving cost.
The technical scheme of the invention is as follows: a gear transmission type central control castor control system comprises a castor body, a linkage device, a rotating body, a clamping set and an executing set;
the linkage device comprises a cam, a hexagonal head, a first elastic element, a mounting shaft, a hexagonal rod, a fluted disc and a bushing cover; the upper end of the hexagonal rod is positioned in the mounting shaft, and the lower end of the hexagonal rod is connected with the fluted disc; the upper end of the installation shaft is provided with a first elastic element, the outer side of the installation shaft is provided with a bushing, a bushing cover is installed on the bushing, the cam is positioned at the top of the hexagonal head, the lower end of the hexagonal head is provided with the first elastic element and the bushing in a penetrating way, and the first elastic element is positioned in the installation shaft;
the rotating body comprises a ball bearing, a ball bearing sleeve, a main shaft bearing and a bracket, wherein the lower end of the mounting shaft sequentially penetrates through the ball bearing, the ball bearing sleeve, the main shaft bearing and the bracket, and an inner shell is mounted in the bracket; the convex part of the edge of the mounting shaft is pressed on the upper end surface of the plane bearing, the ball bearing sleeve is buckled with the main shaft bearing sleeve, and the main shaft bearing is placed in the main shaft bearing sleeve and is in interference fit with the main shaft; the ball bearing is contacted with the upper end face of the main shaft bearing sleeve, the lower end face of the ball bearing sleeve is contacted with the upper end face of the bracket, the main shaft bearing sleeve penetrates through the bracket, and the fluted disc is positioned in the inner shell when being measured in the bracket;
the clamping set comprises a baffle plate, a half fluted disc, a rotating block, a gear, a rack brake block and a stop block; a positioning groove is formed in the middle of the baffle, the baffle is connected with the upper end of the bracket, and a boss of the fluted disc can be clamped in the positioning groove; one side of the half fluted disc is connected with the inner shell through a second elastic element A, the rotating block is connected with the half fluted disc through a second elastic element B, the flanging of the half fluted disc forms a stop block, the length of the stop block reaches the end face of the rotating block, and the rotating block can be clamped in the teeth of the fluted disc; the tail end of the hexagonal rod is connected with a half fluted disc through a connecting piece, the half fluted disc is in transmission connection with a rack through a gear, the rack is arranged on the side surface of the bracket and is in relative sliding connection with the side surface of the bracket 205, and the brake block is arranged in a U-shaped groove of the rack and is connected with a third elastic element in the U-shaped groove;
the execution group comprises rollers, tooth sheets, rolling bearings, sleeves and a center sleeve, wherein the rollers, the tooth sheets, the rolling bearings and the sleeves are symmetrically arranged on the left side and the right side of the bracket, and the center sleeve is arranged between the two inner sides of the bracket; the inner side surface of the roller is provided with a gear tooth disc connected with the gear tooth disc, and the sleeve is arranged between the gear tooth disc and the bracket; the rack can push the brake block to be clamped into the fluted disc of the wheel to brake the roller.
In the above scheme, the second elastic element a and the second elastic element B are both coil springs; the two ends of the second elastic element A are respectively arranged in the inner shell and the half fluted disc groove, and the other end face of the half fluted disc is always in an inclined state under the action of the second elastic element A and is fixedly connected with the inner shell through a positioning pin; two ends of the second elastic element B are respectively arranged in grooves of the half fluted disc and the rotating block.
In the scheme, the brake block is in a T-shaped cuboid shape, the middle convex part is provided with a boss, and two sides away from the middle part are provided with symmetrical positioning grooves.
In the scheme, the rectangular teeth on the half fluted disc are distributed along an arc shape, and the number of the rectangular teeth is 4-6; the number of the rectangular teeth on the upper end surface of the rack 308 is 3-4.
In the scheme, a boss is arranged in the U-shaped groove of the rack.
In the scheme, a sliding groove is formed in the side wall of the rack, and the sliding groove is in sliding connection with a pin on the side face of the support.
In the scheme, the length of the sliding groove is 9-12mm.
In the scheme, when the rack is matched with the brake block, the inclination angle of the rack and the brake block is aligned with the axle center of the gear transmission type central control caster wheel axle.
In the scheme, the upper end of the connecting piece is an oval ring, the lower end of the connecting piece is provided with a rectangular opening, and the width of the rectangular opening is equal to the thickness of the half fluted disc; the lower end of the connecting piece is connected with the half fluted disc pin.
In the above scheme, the bushing comprises a left bushing and a right bushing;
the left bushing and the right bushing correspond to each other, and the lower parts of the left bushing and the right bushing are sequentially provided with a bushing first through hole and a bushing second through hole along the circumferential direction; the mounting shaft is provided with a first mounting shaft through hole and a second mounting shaft through hole, the first mounting shaft through hole is aligned with the first bushing through hole, and the second mounting shaft through hole is aligned with the second bushing through hole.
Compared with the prior art, the invention has the beneficial effects that:
1. the cam is contacted with the hexagonal head, the cam rotates around the center of the hexagonal hole, the hexagonal head can be respectively positioned on the cam to enable the caster to brake, universal and straight, the hexagonal head is connected with the hexagonal rod through threads, the inner hole of the mounting shaft is circular, and the inner hole at the tail end is a hexagonal hole; the hexagonal rod is connected with the fluted disc through threads, the upper part of the installation shaft is fixed by the left bushing and the right bushing, and through holes are formed in the outer wall of the installation shaft along the circumference and aligned with the through holes of the left bushing and the right bushing so as to facilitate rotation adjustment; the bushings are provided with through holes aligned with the hexagonal through holes of the rotating body so as to facilitate adjustment of the control lever, and the left and right bushings are aligned and fixed by a U-shaped bushing cover.
2. When the fluted disc of the clamping set enters the positioning groove in the baffle plate, the castor is in a straight forward direction advancing state; when the fluted disc is separated from the positioning groove, the castor is in a universal state, and when the fluted disc is separated from the positioning groove and presses the semi-fluted disc downwards, the semi-fluted disc and the gear rotate, so that the brake block is clamped with the clamping grooves of the left and right rollers through the racks. The up-and-down movement of the fluted disc is controlled by the rotation of the cam, so that the braking of the caster is controlled; the rack is provided with a groove for installing the brake block, and a boss is arranged in the groove, so that when the fluted disc is reset and the rack retreats, the brake block and the wheel chuck can be retreated and completely separated.
3. The bracket is provided with a hole for fixing the control system, the control system is fixed by rivets, the bracket is provided with a pin hole for connecting the roller, and a central shaft is arranged between the two holes; the outer wall of the bracket is connected with the roller through a sleeve, a bearing is arranged in a central hole of the roller, and the bearing is in interference fit with the roller.
4. The invention solves the technical problems of complex structure, difficult assembly, short service life and the like of the conventional central control caster. On the premise of ensuring the rapid switching of the three states of straight running, universal and braking orientation, the device is compact in structure and simple to assemble by utilizing gear transmission. As the medical bed castor, the medical bed castor is convenient to assemble and maintain, the parts of the control system are convenient to manufacture, and the production cost is reduced.
Drawings
FIG. 1 is an exploded view of the present invention;
FIG. 2 is a cross-sectional view of a brake according to the present invention;
FIG. 3 is a cross-sectional view of the gimbal of the present invention;
FIG. 4 is a straight-line cross-sectional view;
FIG. 5 is an isometric and partially enlarged view of a brake of the present invention;
FIG. 6 is an enlarged view of a portion of FIG. 5C;
fig. 7 is an isometric view of a caster.
In the figure: 1-linkage, 101-bushing cap, 102-cam, 1021-circular profile, 1022-first circular arc recess, 1023-second circular arc recess, 103-hexagonal head, 104-bushing, 105-first resilient element, 106-mounting shaft, 107-hexagonal rod, 108-fluted disc, 109-bushing first through hole, 110-bushing second through hole, 111-mounting shaft first through hole, 112-mounting shaft second through hole, 113-hexagonal through hole, 114, left resisting edge; 115. a right resisting edge; 2-rotator, 201-ball bearing, 202-ball bearing housing, 203-spindle bearing housing, 204-spindle bearing, 205-bracket, 206-inner housing, 3-detent set, 301-baffle, 302-detent, 303-second resilient element, 303 a-torsion spring, 303 b-torsion spring, 304-half-toothed disc, 305-rotating block, 306-detent, 307-gear, 308-rack, 309-runner, 310-connector, 311-pin, 312-spring, 313-rack boss, 314-brake block, 315-stop, 4-actuating set, 401-roller, 402-toothed disc, 403-center sleeve, 404-pin, 405-sleeve, 406-roller bearing, 407-toothed disc.
Detailed Description
The invention will be described in further detail with reference to the drawings and the detailed description, but the scope of the invention is not limited thereto.
As shown in fig. 1, 2, 3 and 4, the gear-driven central control caster control system of the present invention mainly comprises four parts of a linkage device 1, a rotating body 2, a clamping set 3 and an executing set 4.
The linkage device 1 comprises a bushing cover 101, a cam 102, a hexagonal head 103, a bushing 104, a first elastic element 105, a mounting shaft 106, a hexagonal rod 107 and a fluted disc 108, wherein the upper end of the hexagonal rod 107 is positioned in the mounting shaft 106, and the lower end of the hexagonal rod 107 is connected with the fluted disc 108; the upper end of the installation shaft 106 is provided with a first elastic element 105, the outside is provided with a bushing 104, the bushing cover 101 is installed on the bushing 104, the cam 102 is positioned at the top of the hexagonal head 103, the lower end of the hexagonal head 103 is provided with the first elastic element 105 and the bushing 104 in a penetrating way, and the first elastic element 105 is positioned in the installation shaft 106.
The cam 102 is provided with a circular outline 1021, a first circular arc concave part 1022, a second circular arc concave part 1023 and a pentagonal hole, the angle of the circular arc of the groove on the cam 102 is 100-103 degrees, the angle from the vertical line of the center of the cam 102 to the left boundary of the groove is 44-45 degrees, the angle from the vertical line of the center of the cam 102 to the right boundary is 56-58 degrees, two circular arc concave parts with equal radius are arranged below the first circular arc concave part 1022 and the second circular arc concave part 1023, the center of the first circular arc concave part 1022 is on the vertical line of the center, the distance from the transverse line of the center is 12.5-12.6 mm, the common tangent line of the tangent position of the circular outline 1021 and the circular arc of the first circular arc concave part 1022 forms an angle of 39-41 degrees with the vertical line of the center, the circular arc radian of the second circular arc concave part 1023 is 80 degrees, and the included angle between the tangent line of the upper edge and the transverse line of the center is 6-8 degrees.
The cam 102 is positioned at the top of the hexagonal head 103, the lower end of the hexagonal head 103 is provided with a first elastic element 105 and a bushing 104 in a penetrating way, and the first elastic element 105 is positioned in the mounting shaft 106; the bottom of the hexagonal rod 107 has a circular section with a thread on the central surface; the hexagonal head 103 is connected with the hexagonal rod 107 through threads; the inner bore of the mounting shaft 106 is circular and the end inner bore is a hexagonal bore.
The center of the installation shaft 106 is provided with an inner hole groove for the first elastic element 105 to be placed in; the bushings 104 include a left bushing 1041 and a right bushing 1042; the left bushing 1041 and the right bushing 1042 are corresponding, and have a through hole along a circumferential direction at a lower portion thereof, namely, a bushing first through hole 109 and a bushing second through hole 110, and a left resisting edge 114 and a right resisting edge 115 integrally formed with the left bushing and the right bushing are respectively provided at an inner top end of the left bushing 1041 and the right bushing 1042, the left resisting edge 114 and the right resisting edge 115 are symmetrical to each other, the left resisting edge 114 and the right resisting edge 115 are in an upper groove of the cam 102, and the cam 102 is stopped by the left resisting edge 114 and the right resisting edge 115 when rotating to a left limit and a right limit.
The mounting shaft 106 has through holes in the circumferential direction at the top and bottom, respectively, and is called a mounting shaft first through hole 111 and a mounting shaft second through hole 112, respectively, and has a hexagonal through hole 113 at the center end thereof. The mounting shaft 106 of the interlocking set rotates in conjunction with the hexagonal rod 107, and the mounting shaft first through hole 111 and the mounting shaft second through hole 12 on the mounting shaft 106 are aligned with the bushing first through hole 109 and the bushing second through hole 110 of the left bushing 1041 and the right bushing 1042 for debugging.
The rotating body 2 includes a ball bearing 201, a ball bearing housing 202, a spindle bearing housing 203, a spindle bearing 204, and a bracket 205; the ball bearing 201 is a plane bearing, the mounting shaft 106 passes through the center of the plane bearing, the protruding part of the edge of the mounting shaft is pressed on the upper end surface of the plane bearing, the ball bearing sleeve 202 and the main shaft bearing sleeve 203 are buckled, and the main shaft bearing 204 is placed in the main shaft bearing sleeve 203 and is in interference fit with the main shaft. The ball bearing 201 is contacted with the upper end surface of the main shaft bearing sleeve 203, the lower end surface of the ball bearing sleeve 202 is contacted with the upper end surface of the bracket 205, the main shaft bearing sleeve 203 penetrates through the bracket 205, through holes are formed in two sides of the bracket 205 for internal measurement, rivets penetrate through the through holes, and a control system is fixed; a central sleeve 403 is placed between the two sides of the support 205, and an inner shell 206 is arranged inside the support 205 for fixing the parts of the inner clamping set 3.
As shown in fig. 5 and 6, the locking set 3 includes a baffle 301, a positioning groove 302, a second elastic element 303, a half-toothed disc 304, a rotating block 305, a positioning pin 306, a gear 307, a rack 308, a connecting piece 310, a pin 301, a brake block 314 and a stop block 315; a positioning groove 302 is formed in the middle of the baffle 301, the baffle 312 is connected with the bracket 205 by a pin, and the second elastic element 303 comprises a second elastic element A3031 and a second elastic element B3032; the second elastic element a3031 and the second elastic element B3032 are both coil springs; the half fluted disc 304 is connected with the inner shell 206 through a second elastic element A3031, the rotating block 305 and the half fluted disc 304 are connected through a second elastic element B3032, the flanging of the half fluted disc 304 forms a stop block 315, the length of the stop block 315 reaches the end face of the rotating block 305, two ends of the second elastic element A3031 are respectively arranged in the grooves of the inner shell 206 and the half fluted disc 304, and the other end face of the half fluted disc 304 is always in an inclined state under the action of the second elastic element A3031 and is fixedly connected with the inner shell 206 through a positioning pin 306; two ends of the second elastic element B3032 are respectively disposed in grooves of the half-tooth disc 304 and the rotating block 305.
The upper end of the connecting piece 310 is connected with the hexagonal rod 107 through an oval opening, the lower end of the connecting piece is connected with the half fluted disc 304 through a pin 311, the half fluted disc 304 and the rack 308 are in transmission connection through a gear 307, the rack 308 is positioned through two pins, a sliding groove 309 is formed in the side wall of the rack 308, the sliding groove 309 is in sliding connection with one pin on the side face of the support 205, and the other pin is arranged at the lower end of the rack 308. The brake block 314 is mounted in a U-shaped slot of the rack 308 and is connected by a third resilient member 312, preferably the third resilient member 312 is a spring. A boss 313 is arranged in the U-shaped groove of the rack 308, so that when the fluted disc 108 is reset and the rack 308 retreats, the brake block 314 can be retreated and completely separated from the gear tooth disc 402.
As shown in fig. 7, the actuating group 4 includes rollers 401, gear discs 402, a center sleeve 403, pins 404, sleeves 405, roller bearings 406 and gear discs 407 mounted on both left and right sides of the support 205; the center sleeve 403 is disposed between the two inner sides of the bracket 205; the roller 401 has a rolling bearing 406 in the center, a reinforcing rib on the outer side, a gear tooth plate 402 on the inner side, a trapezoid tooth plate 407 with shape similar to the gear tooth plate 402 on the outer side for ensuring the reliability of braking, a threaded hole on the gear tooth plate 402 for connecting the gear tooth plate 407 and the gear tooth plate 402 with a screw, and a sleeve 405 between the gear tooth plate 402 and the bracket 205 for ensuring the distance between them. The bracket 205 is provided with pin holes for connecting the roller 401, and a central shaft is arranged between the two holes; the outer wall of the bracket 205 is connected with the roller 401 by a sleeve 405, a bearing is arranged in the central hole of the roller 401, and the bearing is in interference fit with the roller 401.
The working process of the invention comprises the following steps:
the braking state, as shown in fig. 2:
in the gear-driven central caster control system of the present invention, when the cam 102 is rotated in the opposite direction as indicated by the arrow in fig. 2; the cam 102 is positioned at a circular contour (1021), the hexagonal head 103 is contacted with the circular contour 1021, and because the distance from the center of the circle is increased, the hexagonal rod 107 and the fluted disc 108 move downwards along with the hexagonal rod 107 in a compressed state, the hexagonal rod 107 is connected with the half fluted disc 304 through a connecting piece 310 and a pin 311, the half fluted disc 304 rotates, the second elastic element 303 comprises a half fluted disc 304 and a rotating block 305 which are respectively connected with the inner shell 206, the half fluted disc 304 and the rotating block 305, the rotating block 305 rotates and is clamped in the teeth of the fluted disc 108, the steering is braked by a brake, and meanwhile, the half fluted disc 304 drives the gear 307 to rotate, so that the rack 308 moves towards the direction of the axis, the spring 312 in the U-shaped groove in the rack is compressed, and the brake block 314 is pushed to be clamped in the fluted disc 402; and braking the wheel.
Universal state, as shown in FIG. 3:
when the tip of the hexagonal head 103 is located at the position of the first circular arc concave 1022, the distance from the center of the circle is reduced, at this time, the first elastic element 105 starts to rebound and still is in a compressed state, the hexagonal rod 107 and the toothed disc 108 move upwards along with the first elastic element, the hexagonal rod 107 drives the half-toothed disc 304 to rotate through the connecting piece 310, the second elastic element 303 rebounds, the flanging stop 315 breaks away the rotating block 305 from the teeth of the toothed disc 108, at the same time, the gear 307 rotates, the rack 308 is retracted, the boss 313 in the U-shaped groove in the rack 308 brings the brake block 314 out and separates from the gear tooth disc 402, and at this time, the caster is in a free state.
The straight motion, as shown in fig. 4:
when the tip of the hexagonal head 103 is located at the position of the second circular arc concave 1023, the first elastic element 105 continuously rebounds, the hexagonal rod 107 and the fluted disc 108 move upwards, the boss of the fluted disc 108 is clamped in the positioning groove 302, if the boss is not clamped in, the rotating body is clamped in again after rotating for an angle, and further the straight running of the caster is controlled.
When the fluted disc of the clamping set enters the positioning groove of the baffle plate, the trundle is in a straight directional advancing state; when the fluted disc is positioned between the baffle and the connecting piece, the castor is in a universal state, when the fluted disc presses the semi-fluted disc to rotate through the connecting piece, the gear rotates, the rack pushes the brake block to move so as to be clamped with the clamping grooves of the left and right rollers, and the brake block is in a braking state; the beneficial effects are that: on the premise of ensuring the rapid switching of the three states of straight running, universal and braking orientation, the device is compact in structure and simple to assemble by utilizing gear transmission. As the medical bed castor, the medical bed castor is convenient to assemble and maintain, the parts of the control system are convenient to manufacture, and the production cost is reduced.
The above list of detailed descriptions is only specific to practical embodiments of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent embodiments or modifications that do not depart from the spirit of the present invention should be included in the scope of the present invention.
Claims (8)
1. The gear transmission type central control castor control system is characterized by comprising a castor body, a linkage device (1), a rotating body (2), a clamping set (3) and an executing set (4);
the linkage device (1) comprises a cam (102), a hexagonal head (103), a first elastic element (105), a mounting shaft (106), a hexagonal rod (107), a fluted disc (108) and a bushing cover (101); the upper end of the hexagonal rod (107) is positioned in the mounting shaft (106), and the lower end of the hexagonal rod (107) is connected with the fluted disc (108); the upper end of the installation shaft (106) is provided with a first elastic element (105), the outer side of the installation shaft is provided with a bushing (104), the bushing cover (101) is installed on the bushing (104), the cam (102) is positioned at the top of the hexagonal head (103), the lower end of the hexagonal head (103) is provided with the first elastic element (105) and the bushing (104) in a penetrating way, and the first elastic element (105) is positioned in the installation shaft (106);
the rotary body (2) comprises a ball bearing (201), a ball bearing sleeve (202), a main shaft bearing sleeve (203), a main shaft bearing (204) and a bracket (205) which sequentially penetrate through the lower end of the mounting shaft (106), and an inner shell (206) is mounted inside the bracket (205); the convex part of the edge of the mounting shaft (106) is pressed on the upper end surface of the ball bearing (201), the ball bearing sleeve (202) is buckled with the main shaft bearing sleeve (203), and the main shaft bearing (204) is arranged in the main shaft bearing sleeve (203); the ball bearing (201) is contacted with the upper end surface of the main shaft bearing sleeve (203), the lower end surface of the ball bearing sleeve (202) is contacted with the upper end surface of the bracket (205), the main shaft bearing sleeve (203) passes through the bracket (205), and the fluted disc (108) is positioned in the inner shell (206) when the inner side of the bracket (205) is measured;
the clamping set (3) comprises a baffle plate (301), a half fluted disc (304), a rotating block (305), a gear (307), a rack (308) brake block (314) and a stop block (315); a positioning groove (302) is formed in the middle of the baffle plate (301), the baffle plate (301) is connected with the upper end of the bracket (205), and a boss of the fluted disc (108) can be clamped in the positioning groove (302); one side of the half fluted disc (304) is connected with the inner shell (206) through a second elastic element A (3031), the rotating block (305) is connected with the half fluted disc (304) through a second elastic element B (3032), the flanging of the half fluted disc (304) forms a stop block (315), the length of the stop block (315) reaches the end face of the rotating block (305), and the rotating block (305) can be clamped in the teeth of the fluted disc (108); the tail end of the hexagonal rod (107) is connected with a half fluted disc (304) through a connecting piece (310), the half fluted disc (304) is in transmission connection with a rack (308) through a gear (307), the rack (308) is arranged on the side surface of the bracket (205) and is in relative sliding connection with the side surface of the bracket (205), and a brake block (314) is arranged in a U-shaped groove of the rack (308) and is connected with a third elastic element in the U-shaped groove;
the execution group (4) comprises rollers (401), tooth plates (407), rolling bearings (406), sleeves (405) and a center sleeve (403) which are symmetrically arranged on the left side and the right side of the bracket (205); the inner side surface of the roller (401) is provided with a gear tooth disc (402) connected with a gear tooth disc (407), and a sleeve (405) is arranged between the gear tooth disc (402) and the bracket (205); the rack (308) can push the brake block (314) to be clamped into the wheel fluted disc (402) to brake the roller (401);
the brake block (314) is in a T-shaped cuboid shape, a boss is arranged at the middle convex part, and symmetrical positioning grooves are arranged at two sides away from the middle part;
rectangular teeth on the half fluted disc (304) are distributed along an arc shape;
a boss (313) is arranged in the U-shaped groove of the rack (308);
the cam (102) is provided with a circular outline (1021), a first circular arc-shaped concave part (1022), a second circular arc-shaped concave part (1023) and a pentagonal hole;
when the bicycle is braked, the hexagonal head (103) is contacted with the circular outline (1021), and because the distance from the center of the circle is increased, the first elastic element (105) is in a compressed state, the hexagonal rod (107) and the fluted disc (108) move downwards along with the hexagonal rod, the hexagonal rod (107) is connected with the half fluted disc (304) through a connecting piece (310) to enable the half fluted disc (304) to rotate, the second elastic element (303) is respectively connected with the inner shell (206), the half fluted disc (304) and the rotating block (305), the rotating block (305) rotates and is clamped in the teeth of the fluted disc (108) to brake steering, meanwhile, the half fluted disc (304) drives the gear (307) to rotate, so that the rack (308) moves towards the axis direction, the spring (312) in the U-shaped groove in the rack is compressed to push the brake block (314) to be clamped into the fluted disc (402) to brake the wheel;
when the hexagonal head (103) is switched to a universal state, when the tip end of the hexagonal head is positioned at the position of the first circular arc-shaped concave part (1022), the first elastic element (105) starts to rebound and still is in a compressed state at the moment, the hexagonal rod (107) and the fluted disc (108) move upwards along with the hexagonal rod, the hexagonal rod (107) drives the half fluted disc (304) to rotate through the connecting piece (310), the second elastic element (303) rebounds, the flanging stop block (315) enables the rotating block (305) to be separated from teeth of the fluted disc (108), meanwhile, the gear (307) rotates to enable the rack (308) to retreat, and a boss (313) in a U-shaped groove in the rack (308) brings out the brake block (314) to be separated from the fluted disc (402), and at the moment, the castor is in a free state.
2. The geared central caster control system of claim 1, wherein the second elastic element a (3031) and the second elastic element B (3032) are both coil springs; two ends of the second elastic element A (3031) are respectively arranged in grooves of the inner shell (206) and the half fluted disc (304), and under the action of the second elastic element A (3031), the other end face of the half fluted disc (304) is always in an inclined state and is fixedly connected with the inner shell (206) through a positioning pin (306); two ends of the second elastic element B (3032) are respectively arranged in grooves of the half fluted disc (304) and the rotating block (305).
3. The geared central caster control system of claim 1, wherein the number of rectangular teeth is 4-6; the number of the rectangular teeth on the upper end face of the rack (308) is 3-4.
4. The geared central caster control system of claim 1, wherein a chute (309) is formed in the side wall of the rack (308), and the chute (309) is slidably connected to a pin on the side of the bracket (205).
5. The geared central caster control system of claim 4, wherein the runner (309) is 9-12mm in length.
6. The geared center caster control system of claim 1, wherein when the rack (308) is engaged with the brake block (314), the tilt angle of the rack (308) and the brake block (314) is aligned with the axis of the geared center caster axle.
7. The gear-driven center-control caster control system according to claim 1, wherein the upper end of the connecting member (310) is an elliptical ring, and the lower end is provided with a rectangular opening, and the width of the rectangular opening is equal to the thickness of the half-fluted disc (304); the lower end of the connecting piece (310) is connected with the half fluted disc (304) through a pin.
8. The geared central caster control system of claim 1, wherein the bushings (104) comprise a left bushing (1041) and a right bushing (1042);
the left bushing (1041) and the right bushing (1042) are corresponding, and a bushing first through hole (109) and a bushing second through hole (110) along the circumferential direction are sequentially formed in the lower parts of the left bushing (1041) and the right bushing (1042); the mounting shaft (106) is provided with a mounting shaft first through hole (111) and a mounting shaft second through hole (112), the mounting shaft first through hole (111) is aligned with the bushing first through hole (109), and the mounting shaft second through hole (112) is aligned with the bushing second through hole (110).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711494835.7A CN108116161B (en) | 2017-12-31 | 2017-12-31 | Gear drive type central control castor control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711494835.7A CN108116161B (en) | 2017-12-31 | 2017-12-31 | Gear drive type central control castor control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108116161A CN108116161A (en) | 2018-06-05 |
| CN108116161B true CN108116161B (en) | 2024-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711494835.7A Active CN108116161B (en) | 2017-12-31 | 2017-12-31 | Gear drive type central control castor control system |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8525397D0 (en) * | 1985-09-06 | 1985-11-20 | Tente Rollen Gmbh & Co | Castor |
| CN201573488U (en) * | 2009-09-25 | 2010-09-08 | 胡坚兴 | Central control caster wheel |
| DE202012102374U1 (en) * | 2012-06-27 | 2012-07-24 | Po-Chuan Tsai | Controllable swivel castor with double braking effect |
| CN202656787U (en) * | 2012-05-24 | 2013-01-09 | 蔡博全 | Center control trundle |
| JP2014000910A (en) * | 2012-06-20 | 2014-01-09 | Bo-Quan Cai | Caster having brake |
| CN106853749A (en) * | 2016-12-09 | 2017-06-16 | 无锡市中冠物流设备有限公司 | Castor control device is controlled in one kind |
| CN207711714U (en) * | 2017-12-31 | 2018-08-10 | 无锡市中冠物流设备有限公司 | Castor control system is controlled in a kind of gear driven type |
-
2017
- 2017-12-31 CN CN201711494835.7A patent/CN108116161B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8525397D0 (en) * | 1985-09-06 | 1985-11-20 | Tente Rollen Gmbh & Co | Castor |
| CN201573488U (en) * | 2009-09-25 | 2010-09-08 | 胡坚兴 | Central control caster wheel |
| CN202656787U (en) * | 2012-05-24 | 2013-01-09 | 蔡博全 | Center control trundle |
| JP2014000910A (en) * | 2012-06-20 | 2014-01-09 | Bo-Quan Cai | Caster having brake |
| DE202012102374U1 (en) * | 2012-06-27 | 2012-07-24 | Po-Chuan Tsai | Controllable swivel castor with double braking effect |
| CN106853749A (en) * | 2016-12-09 | 2017-06-16 | 无锡市中冠物流设备有限公司 | Castor control device is controlled in one kind |
| CN207711714U (en) * | 2017-12-31 | 2018-08-10 | 无锡市中冠物流设备有限公司 | Castor control system is controlled in a kind of gear driven type |
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| Publication number | Publication date |
|---|---|
| CN108116161A (en) | 2018-06-05 |
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Address after: 214181 Yanyu Road, Qianzhou supporting area, Huishan Economic Development Zone, Wuxi City, Jiangsu Province Applicant after: Wuxi Zhongguan Medical Equipment Co.,Ltd. Applicant after: JIANGSU University Address before: 214181 Yanyu Road, Qianzhou supporting area, Huishan Economic Development Zone, Wuxi City, Jiangsu Province Applicant before: WUXI ZHONGGUAN LOGISTICS EQUIPMENT Co.,Ltd. Applicant before: JIANGSU University |
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