CN115246286B - Medical castor with central control brake - Google Patents
Medical castor with central control brake Download PDFInfo
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- CN115246286B CN115246286B CN202110750296.9A CN202110750296A CN115246286B CN 115246286 B CN115246286 B CN 115246286B CN 202110750296 A CN202110750296 A CN 202110750296A CN 115246286 B CN115246286 B CN 115246286B
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- 235000004443 Ricinus communis Nutrition 0.000 title claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims abstract description 67
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 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
- B60B33/0078—Castors in general; Anti-clogging castors characterised by details of the wheel braking mechanism
- B60B33/0084—Castors in general; Anti-clogging castors characterised by details of the wheel braking mechanism acting on axle end
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
A medical castor with a central control brake comprises a main bracket, an auxiliary bracket, a vertical shaft, a brake piece, a shaft body and two wheel bodies; the device comprises a main support, a driving component, a connecting plate, a driving component, a first pressure spring, a second pressure spring, a transmission component, a linkage component, a shaft clutch component, a movable clutch component, a transmission rod, a driving component, a first pressure spring and a second pressure spring, wherein the transmission component is arranged in an upper semicircular cavity and is in sliding fit with a longitudinal guide groove; the linkage piece and the shaft clutch piece rotate along with the vertical shaft; the lower end of the transmission rod penetrates through the driving cavity and stretches into an axial hole of the vertical shaft, the annular disc is in running fit with a rotating cavity on the bottom plate of the driving cavity, a fixed connecting seat of the transmission piece is fixedly connected with the transmission rod, and the connecting plate is fixedly connected with a connecting seat of the movable clutch piece; the driving assembly is arranged in the driving cavity and matched with the upper end of the transmission rod, the clutch teeth are meshed with the clutch tooth grooves, and the brake teeth are meshed with the brake tooth grooves. The rotation driving device can realize the conversion of the walking and braking vertical shafts and the wheel body, and is convenient to use.
Description
Technical Field
The invention relates to a castor with brake.
Background
In the prior art, the universal castor comprises a main bracket, an auxiliary bracket, a vertical shaft, a brake piece, a shaft body and two wheel bodies; the main support comprises a vertical shaft seat and an upper semicircular cavity part communicated with the vertical shaft seat, an upper counter bore is arranged at the upper end of the vertical shaft seat, a lower counter bore is arranged at the lower end of the vertical shaft seat, a bearing is arranged in the upper counter bore, a pivot seat is arranged in the lower counter bore, the upper part of the vertical shaft is fixed with an inner ring of the bearing, and a shaft head at the lower end is in rotary fit with the pivot seat; a brake tooth slot is arranged on the hub of the wheel body; the main bracket and the auxiliary bracket are buckled. The problems are: the brake is convenient and single, and only the wheel body and the vertical shaft can be braked.
Disclosure of Invention
The purpose of the invention is that: the medical castor with the central brake can brake the shaft and the wheel simultaneously and independently brake the vertical shaft.
The invention is realized in the following way: a medical castor with a central control brake comprises a main bracket, an auxiliary bracket, a vertical shaft, a brake piece, a shaft body and two wheel bodies; the main support comprises a vertical shaft seat and an upper semicircular cavity part communicated with the vertical shaft seat, an upper counter bore is arranged at the upper end of the vertical shaft seat, a lower counter bore is arranged at the lower end of the vertical shaft seat, a bearing is arranged in the upper counter bore, a pivot seat is arranged in the lower counter bore, the upper part of the vertical shaft is fixed with an inner ring of the bearing, and the shaft head part at the lower end is rotationally matched with the pivot seat; a brake tooth slot is arranged on the hub of the wheel body; the main bracket and the auxiliary bracket are buckled; the special feature is that: the main support further comprises a longitudinal guide groove arranged on the inner wall of the upper semicircular cavity part, a longitudinal guide hole and a shaft hole which are arranged on the upper semicircular cavity part, wherein the longitudinal guide hole is intersected with the longitudinal guide groove, and a positioning guide groove is arranged in the vertical shaft seat;
The auxiliary bracket comprises a lower semicircular cavity with an upper opening and a guide groove arranged on the lower semicircular cavity,
The brake piece comprises a seat body, arc-shaped braking plates arranged at two ends of the seat body and a lower spring seat hole arranged on the seat body, and braking teeth are arranged on the lower surface of the arc-shaped braking plates;
the vertical shaft also comprises an axial hole on the shaft line, a cylindrical driving cavity arranged at the upper end and a waist-shaped part arranged at the upper part of the shaft head;
the device also comprises a transmission part, a linkage part, a shaft clutch part, a movable clutch part, a transmission rod, a driving assembly, a first pressure spring and a second pressure spring,
The transmission piece comprises a longitudinal shaft hole, a movable cavity arranged at the top and provided with openings at the two ends, a connecting plate arranged at one side of the bottom and a fixed connecting seat arranged on the connecting plate;
the linkage piece comprises a cylinder seat, a kidney-shaped hole arranged on the axis, at least two pin plates arranged at the lower end, a flange encircling the upper end of the cylinder seat and a meshing block arranged on the flange;
The movable clutch piece comprises a cylindrical seat, a clutch head arranged at the lower end of the cylindrical seat, a meshing groove arranged at the upper end of the cylindrical seat, a positioning sliding block arranged around the cylindrical seat, an axial arc plate and a connecting seat arranged at the lower end of the axial arc plate; the lower end of the clutch head is provided with clutch teeth;
The shaft clutch piece comprises a cylindrical seat, a clutch disc surrounding the middle part of the cylindrical seat in the height direction and a pin slot arranged at the upper end, and a clutch tooth slot is arranged on the clutch disc;
The upper part of the transmission rod is arranged on the annular disc;
The brake piece is arranged on a bottom plate of a movable cavity of the transmission piece, the first pressure spring is matched with a top plate of the movable cavity and a lower spring seat hole of a seat body of the brake piece, the transmission piece is arranged in an upper semicircular cavity and is in sliding fit with the longitudinal guide groove, the shaft body penetrates through the longitudinal shaft hole, the circular arc-shaped brake plate extends out of the longitudinal guide hole of the main support, and a connecting plate of the transmission piece extends into the vertical shaft seat; the transmission piece is in sliding fit with the guide groove of the auxiliary bracket; the waist-shaped hole of the linkage piece is connected with the waist-shaped part of the vertical shaft, the shaft clutch piece is arranged at the lower part of the linkage piece, the pin plate is spliced with the pin groove, and the linkage piece and the shaft clutch piece rotate along with the vertical shaft; the cylinder seat and the clutch head of the movable clutch piece are in running fit with the cylinder seat and are in sliding fit along the axial direction, the positioning sliding block of the movable clutch piece is in sliding fit with the positioning guide groove arranged in the vertical shaft seat, and the second pressure spring is matched with the cylinder seat of the movable clutch piece and the annular supporting table in the vertical shaft seat;
The lower end of the transmission rod penetrates through the driving cavity and stretches into an axial hole of the vertical shaft, the annular disc is in running fit with a rotating cavity on the bottom plate of the driving cavity, a fixed connecting seat of the transmission piece is fixedly connected with the transmission rod, and the connecting plate is fixedly connected with a connecting seat of the movable clutch piece; the driving assembly is arranged in the driving cavity and matched with the upper end of the transmission rod, the clutch teeth are meshed with the clutch tooth grooves, and the brake teeth are meshed with the brake tooth grooves.
The medical castor for the central control brake is characterized in that: a radial circular hole is arranged on the driving cavity of the vertical shaft, and a fixed cavity is arranged between the rotating cavity and the driving cavity;
the upper end of the transmission rod is provided with an external threaded joint;
the driving component comprises a driving wheel, a driving wheel seat, a sphere, a transmission seat and a return spring,
The driving wheel comprises shaft heads positioned at two sides of the driving wheel, hexagonal holes penetrating the driving wheel and the shaft heads, guide stop grooves, plane parts, clutch grooves and lock shaft grooves arranged on the plane parts, and brake grooves arranged on the arc-shaped surfaces, and the intersection parts of the arc-shaped surfaces and the plane parts are rounded;
the driving wheel seat comprises a driving wheel cavity, a fixed head, a polygonal guide hole, a shaft head hole, a circular hole and a guide stop block arranged on the driving wheel cavity; the axis of the circular hole coincides with the axis of the driving wheel cavity;
The transmission seat comprises a polygonal body, a hemispherical cavity arranged at the top and a head arranged at the lower part, and an internal threaded hole with a lower opening is arranged on the head;
the driving wheel seat is arranged in a driving cavity of the vertical shaft, the fixed head is inserted into the fixed cavity, the external threaded joint of the transmission rod extends into the polygonal guide hole, the polygonal body part of the transmission seat is in sliding fit with the polygonal guide hole, the head is inserted into the reset spring, and the reset spring is in supporting fit with the bottom plate of the rotating cavity; the head of the external thread is screwed with the internal thread hole; the shaft head of the driving wheel is in rotary fit with the shaft head hole, the guide stop block is matched with the guide stop groove, the ball body is arranged in the hemispherical cavity, and the ball body is matched with the driving wheel.
The medical castor for the central control brake is characterized in that: the driving wheel seat is made by buckling two half bodies,
The semi-body comprises a semi-driving wheel cavity, a semi-guiding stop block, a semi-polygonal hole, a semi-fixed head, a shaft head hole and a circular hole.
The medical castor for the central control brake is characterized in that: the driving cavity is provided with an annular groove and further comprises a clamp spring, and the clamp spring is embedded with the annular groove and is matched and positioned with the top of the driving wheel seat.
The medical castor for the central control brake is characterized in that: the device also comprises a pressing plate and a top cover, wherein the pressing plate comprises a convex cavity with an upper opening arranged in the center and a circular hole arranged on a bottom plate of the convex cavity;
The top plate of the top cover is provided with a rotating hole;
the bottom plate of the driving cavity is provided with an annular seat body;
the convex cavity of the pressing plate is in supporting fit with the inner ring of the bearing, the annular seat body is attached to the bottom plate of the convex cavity, the upper part of the annular seat body rotates in the rotating hole, and the top cover is buckled with the upper end of the vertical shaft seat.
The central control brake medical castor provided by the invention has the advantages that the transmission piece, the linkage piece, the transmission rod and the driving assembly are arranged, the driving device is rotated, the travelling and braking vertical shafts and the conversion between the braking vertical shafts and the wheel body can be realized, and the use is convenient.
Drawings
Fig. 1 is a cross-sectional view of the present invention.
Fig. 2 is a view a-a of fig. 1.
Fig. 3 is a view B-B of fig. 1.
Fig. 4 is one of the exploded perspective views of the present invention.
Fig. 5 is a second perspective exploded view of the present invention.
Fig. 6 is one of the partial exploded perspective views of the present invention.
Fig. 7 is a second partial exploded perspective view of the present invention.
Fig. 8 is a perspective view of a main support of the present invention.
Fig. 9 is a perspective view of a subframe according to the present invention.
Fig. 10 is a perspective cross-sectional view of the transmission of the present invention.
Fig. 11 is a cross-sectional view of a drive wheel of the present invention.
Fig. 12 is a perspective view of the drive wheel of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in figure 1, the medical castor with the central control brake comprises a main bracket 1, an auxiliary bracket 2, a vertical shaft 3, a brake piece 4, a shaft body 5 and two wheel bodies 6; the main support 1 comprises a vertical shaft seat 11 and an upper semicircular cavity 12 communicated with the vertical shaft seat, wherein an upper counter bore 111 is arranged at the upper end of the vertical shaft seat 11, a lower counter bore 112 is arranged at the lower end of the vertical shaft seat 11, a bearing 3A is arranged in the upper counter bore 111, a pivot seat 3B is arranged in the lower counter bore 112, the upper part of the vertical shaft 3 is fixed with the inner ring of the bearing 3A, and a shaft head 31 at the lower end is rotationally matched with the pivot seat 3B; a wheel hub 61 of the wheel body 6 is provided with a brake tooth slot; the main bracket 1 and the auxiliary bracket 2 are buckled
The main support 1 further comprises a longitudinal guide groove 121 arranged on the inner wall of the upper semicircular cavity 12, a longitudinal guide hole 122 and a shaft hole 123 which are arranged on the upper semicircular cavity, wherein the longitudinal guide hole 122 is intersected with the longitudinal guide groove 121, and a positioning guide groove 113 is arranged in the vertical shaft seat 11;
the auxiliary bracket 2 comprises a lower semicircular cavity 21 with an upper opening and a guide groove 22 arranged on the lower semicircular cavity,
The brake piece 4 comprises a seat body 41, arc-shaped braking plates 42 arranged at two ends of the seat body and lower spring seat holes 43 arranged on the seat body, and braking teeth are arranged on the lower surface of the arc-shaped braking plates 42;
The vertical shaft 3 further comprises an axial hole 32 on the axis, a cylindrical driving cavity 33 arranged at the upper end and a waist-shaped part 34 arranged at the upper part of the shaft head 31, wherein the waist-shaped part 34 comprises a plane part on one diameter line and a circular arc part on one diameter line, and the plane part and the circular arc part are arranged at intervals;
further comprises a transmission member 7, a linkage member 8, a shaft clutch member 9, a movable clutch member 10, a transmission rod 13, a driving assembly 14, a first pressure spring 151 and a second pressure spring 152,
As shown in fig. 10, the transmission member 7 includes a longitudinal shaft hole 71, a movable chamber 72 provided at the top and having both ends open, a connection plate 73 provided at the bottom side, and a fixed connection seat 74 provided on the connection plate; the longitudinal shaft hole comprises a square part positioned in the middle, a semicircular part positioned at the upper part and a semicircular part positioned at the lower part;
The linkage 8 comprises a cylinder seat 81, a waist-shaped hole 82 arranged on the axis, two pin plates 83 arranged at the lower end, a flange 84 surrounding the upper end of the cylinder seat and an engagement block 85 arranged on the flange;
The shaft clutch 9 comprises a cylindrical seat 91, a clutch disc 92 surrounding the middle part of the cylindrical seat in the height direction and a pin slot 93 arranged at the upper end, and a clutch tooth slot is arranged on the clutch disc 92; the inner cavity of the cylindrical seat 91 is waist-shaped, or the upper part of the inner cavity of the cylindrical seat 91 is a round hole part, and the lower part is a waist-shaped hole part;
The movable clutch part 10 comprises a cylindrical seat 101, a clutch head 102 arranged at the lower end of the cylindrical seat, a meshing groove 103 arranged at the upper end of the cylindrical seat, a positioning sliding block 104 arranged around the cylindrical seat, an axial circular arc plate 105 and a connecting seat 106 arranged at the lower end of the axial circular arc plate; the lower end of the clutch head 102 is provided with clutch teeth;
the upper part of the transmission rod 13 is arranged on the annular disc 131;
The brake piece 4 is arranged on the bottom plate of the movable cavity 72 of the transmission piece 7, the first pressure spring 151 is matched with the top plate of the movable cavity 72 and the lower spring seat hole 43 of the seat body 41 of the brake piece 4, the transmission piece 7 is arranged in the upper semicircular cavity 12 and is in sliding fit with the longitudinal guide groove 121, the shaft body 5 passes through the longitudinal shaft hole 71, the circular arc-shaped braking plate 42 extends out of the longitudinal guide hole 122 of the main support 1, and the connecting plate 73 of the transmission piece 7 extends into the vertical shaft seat 11; the lower part of the transmission piece 7 is in sliding fit with the guide groove 22 of the auxiliary bracket 2; the kidney-shaped hole 82 of the linkage piece 8 is connected with the kidney-shaped part 34 of the vertical shaft 3, the shaft clutch piece 9 is arranged at the lower part of the linkage piece 8, the pin plate 83 is spliced with the pin groove 93, and the linkage piece 8 and the shaft clutch piece 9 rotate together with the vertical shaft 3; the cylindrical seat 101 and the clutch head 102 of the movable clutch member 10 are in running fit with the cylinder seat 81 and are in sliding fit along the axial direction, and the positioning sliding block 104 of the movable clutch member 10 is in sliding fit with the positioning guide groove 113 arranged in the vertical shaft seat 11, that is, the movable clutch member 10 moves up and down relative to the vertical shaft seat 11; the second pressure spring 153 is matched with the annular supporting table 114 in the cylindrical seat 101 and the vertical shaft seat 11 of the movable clutch member 10;
The lower end of the transmission rod 13 penetrates through the driving cavity 33 and stretches into the axial hole 32 of the vertical shaft 3, the annular disc 131 is in running fit with the rotating cavity 331 on the bottom plate of the driving cavity 33, the fixed connecting seat 74 of the transmission member 7 is fixedly connected with the lower end of the transmission rod 13, and the connecting plate 73 is fixed with the connecting seat 106 of the movable clutch member 10; the driving assembly 14 is arranged in the driving cavity 33 and matched with the upper end of the transmission rod 13, the clutch teeth are meshed with the clutch tooth grooves, and the brake teeth are meshed with the brake tooth grooves.
As an improvement of the invention: a radial circular hole 332 is arranged on the driving cavity 33 of the vertical shaft 3, and a fixed cavity 333 is arranged between the rotating cavity 331 and the driving cavity 33; the fixed cavity 333 is provided with a plurality of radial screw holes (not identified in the figure);
an external threaded joint 132 is arranged at the upper end of the transmission rod 13;
The drive assembly 14 comprises a drive wheel 16, a drive wheel seat 17, a ball 18, a transmission seat 19 and a return spring 20,
The driving wheel 16 comprises shaft heads 161 positioned at two sides of the driving wheel, hexagonal holes 162 penetrating the driving wheel and the shaft heads, guide stop slots 163, a plane part, a clutch slot 16A and a lock shaft slot 16B arranged on the plane part and a brake slot 16C arranged on the arc-shaped surface, and the intersection of the arc-shaped surface and the plane part is rounded 16D;
The driving wheel seat 17 comprises a driving wheel cavity 171, a fixed head 172, a polygonal guide hole 173, a spindle head hole 174, a circular hole 175 and a guide stop block 176 arranged on the driving wheel cavity; the axes of the spindle head hole 174 and the circular hole 175 coincide with the axis of the driving wheel cavity 171;
The transmission seat 19 comprises a polygonal body 191, a hemispherical cavity arranged at the top and a head 192 arranged at the lower part, and the head 192 is provided with an internal threaded hole with a lower opening;
The driving wheel seat 17 is arranged in the driving cavity 33 of the vertical shaft 3, the fixed head 172 is inserted into the fixed cavity 333, the fixed head 172 is fixed by screwing a screw with a radial screw hole, the external threaded joint 132 of the transmission rod 13 extends into the polygonal guiding hole 173, the polygonal body 191 of the transmission seat 19 is in sliding fit with the polygonal guiding hole 173, the head 192 is inserted into the reset spring 20, and the reset spring 20 is in supporting fit with the bottom plate of the rotating cavity 331; the external thread head 132 is screwed with the internal thread hole; the axle head 161 of the drive wheel 16 is in rotational engagement with the axle head hole 174, the guide stop block 176 is in engagement with the guide stop slot 163, the ball 18 is disposed within the hemispherical cavity, and the ball 18 is in engagement with the drive wheel 16.
As shown in fig. 6 and 7, the driving wheel seat 17 is made of two half bodies which are buckled,
The half body comprises a half driving wheel cavity 17A, a half guiding stop block 17B, a half polygonal hole 17C, a half fixing head 17D, a shaft head hole 174 and a circular hole 175, and the two half bodies are buckled to form the driving wheel seat 17.
The driving cavity 33 is provided with an annular groove 334, and further comprises a clamping spring 23, wherein the clamping spring 23 is embedded with the annular groove 334 and is matched and positioned with the top of the driving wheel seat 17.
Also included are a platen 24 and a top cover 25,
The pressing plate 24 comprises a convex cavity 241 arranged at the upper opening of the center and a circular hole arranged on the bottom plate of the convex cavity;
A rotating hole is arranged on the top plate of the top cover 25;
The bottom plate of the driving cavity 33 is provided with an annular seat 335;
The convex cavity 241 of the pressing plate 24 is in supporting fit with the inner ring of the bearing 3A, the annular base 335 is attached to the bottom plate of the convex cavity 241, the upper portion of the annular base 335 rotates in the rotating hole of the top cover 25, and the top cover 25 is buckled with the upper end of the vertical shaft seat 11.
The state shown in fig. 1, 2 and 3 is a normal running state, the wheel body 6 rotates, and the main bracket 1 and the auxiliary bracket 2 rotate around the vertical shaft 3. As shown in fig. 1, in the running state, as shown in fig. 11, the clutch groove 16A is fitted to the ball 18; the driving wheel 16 is rotated clockwise, the driving wheel 16 is in sliding fit with the sphere 18 until the sphere 18 is embedded with the brake groove 16C, and the brake state is achieved; in the process of switching from the running state to the braking state, the transmission piece 7 and the transmission rod 13 move downwards together, the transmission rod 7 moves downwards in the longitudinal guide groove 121 of the main bracket 1 and the guide groove 22 of the auxiliary bracket 2, and the braking tooth grooves on the lower surface of the circular arc-shaped braking plate 42 of the braking piece 4 and the hub 61 of the wheel body 6 are provided with braking tooth grooves for meshing braking; the movable clutch member 10 moves downwards along with the transmission member 7, and the clutch teeth on the clutch head 102 of the movable clutch member 10 are engaged with the clutch tooth grooves on the clutch disc 92 of the shaft clutch member 9 to brake, and in a braking state, the wheel body cannot rotate around the shaft body 5, and the main bracket and the auxiliary bracket 2 cannot rotate around the vertical shaft 3.
In the normal running state shown in fig. 1, the driving wheel 16 is rotated anticlockwise, the ball 18 is embedded with the lock shaft groove 16B, the transmission member 7, the movable clutch member 10 and the transmission rod 13 move upwards together when the running state is changed from the running state to the lock shaft state, the engagement block 85 of the linkage member 8 is engaged with the engagement groove 103 of the movable clutch member 10, the lock shaft is realized, the wheel body 6 is rotated normally, and the main support and the auxiliary support cannot rotate around the vertical shaft 3.
What has been described above is merely a preferred embodiment of the present invention. It should be noted that modifications and variations can be made by those skilled in the art without departing from the principles of the present invention, which is also considered as being within the scope of the present invention.
Claims (4)
1. A medical castor with a central control brake comprises a main bracket, an auxiliary bracket, a vertical shaft, a brake piece, a shaft body and two wheel bodies; the main support comprises a vertical shaft seat and an upper semicircular cavity part communicated with the vertical shaft seat, an upper counter bore is arranged at the upper end of the vertical shaft seat, a lower counter bore is arranged at the lower end of the vertical shaft seat, a bearing is arranged in the upper counter bore, a pivot seat is arranged in the lower counter bore, the upper part of the vertical shaft is fixed with an inner ring of the bearing, and the shaft head part at the lower end is rotationally matched with the pivot seat; a brake tooth slot is arranged on the hub of the wheel body; the main bracket and the auxiliary bracket are buckled; the method is characterized in that: the main support further comprises a longitudinal guide groove arranged on the inner wall of the upper semicircular cavity part, a longitudinal guide hole and a shaft hole which are arranged on the upper semicircular cavity part, wherein the longitudinal guide hole is intersected with the longitudinal guide groove, and a positioning guide groove is arranged in the vertical shaft seat;
The auxiliary bracket comprises a lower semicircular cavity with an upper opening and a guide groove arranged on the lower semicircular cavity,
The brake piece comprises a seat body, arc-shaped braking plates arranged at two ends of the seat body and a lower spring seat hole arranged on the seat body, and braking teeth are arranged on the lower surface of the arc-shaped braking plates;
the vertical shaft also comprises an axial hole on the shaft line, a cylindrical driving cavity arranged at the upper end and a waist-shaped part arranged at the upper part of the shaft head;
the device also comprises a transmission part, a linkage part, a shaft clutch part, a movable clutch part, a transmission rod, a driving assembly, a first pressure spring and a second pressure spring,
The transmission piece comprises a longitudinal shaft hole, a movable cavity arranged at the top and provided with openings at the two ends, a connecting plate arranged at one side of the bottom and a fixed connecting seat arranged on the connecting plate;
the linkage piece comprises a cylinder seat, a kidney-shaped hole arranged on the axis, at least two pin plates arranged at the lower end, a flange encircling the upper end of the cylinder seat and a meshing block arranged on the flange;
The movable clutch piece comprises a cylindrical seat, a clutch head arranged at the lower end of the cylindrical seat, a meshing groove arranged at the upper end of the cylindrical seat, a positioning sliding block arranged around the cylindrical seat, an axial arc plate and a connecting seat arranged at the lower end of the axial arc plate; the lower end of the clutch head is provided with clutch teeth;
The shaft clutch piece comprises a cylindrical seat, a clutch disc surrounding the middle part of the cylindrical seat in the height direction and a pin slot arranged at the upper end, and a clutch tooth slot is arranged on the clutch disc;
The upper part of the transmission rod is arranged on the annular disc;
The brake piece is arranged on a bottom plate of a movable cavity of the transmission piece, the first pressure spring is matched with a top plate of the movable cavity and a lower spring seat hole of a seat body of the brake piece, the transmission piece is arranged in an upper semicircular cavity and is in sliding fit with the longitudinal guide groove, the shaft body penetrates through the longitudinal shaft hole, the circular arc-shaped brake plate extends out of the longitudinal guide hole of the main support, and a connecting plate of the transmission piece extends into the vertical shaft seat; the transmission piece is in sliding fit with the guide groove of the auxiliary bracket; the waist-shaped hole of the linkage piece is connected with the waist-shaped part of the vertical shaft, the shaft clutch piece is arranged at the lower part of the linkage piece, the pin plate is spliced with the pin groove, and the linkage piece and the shaft clutch piece rotate along with the vertical shaft; the cylinder seat and the clutch head of the movable clutch piece are in running fit with the cylinder seat and are in sliding fit along the axial direction, the positioning sliding block of the movable clutch piece is in sliding fit with the positioning guide groove arranged in the vertical shaft seat, and the second pressure spring is matched with the cylinder seat of the movable clutch piece and the annular supporting table in the vertical shaft seat;
the lower end of the transmission rod penetrates through the driving cavity and stretches into an axial hole of the vertical shaft, the annular disc is in running fit with a rotating cavity on the bottom plate of the driving cavity, a fixed connecting seat of the transmission piece is fixedly connected with the transmission rod, and the connecting plate is fixedly connected with a connecting seat of the movable clutch piece; the driving assembly is arranged in the driving cavity and matched with the upper end of the transmission rod, the clutch teeth are meshed with the clutch tooth grooves, and the brake teeth are meshed with the brake tooth grooves;
a radial circular hole is arranged on the driving cavity of the vertical shaft, and a fixed cavity is arranged between the rotating cavity and the driving cavity;
the upper end of the transmission rod is provided with an external threaded joint;
the driving component comprises a driving wheel, a driving wheel seat, a sphere, a transmission seat and a return spring,
The driving wheel comprises shaft heads positioned at two sides of the driving wheel, hexagonal holes penetrating the driving wheel and the shaft heads, guide stop grooves, plane parts, clutch grooves and lock shaft grooves arranged on the plane parts, and brake grooves arranged on the arc-shaped surfaces, and the intersection parts of the arc-shaped surfaces and the plane parts are rounded;
the driving wheel seat comprises a driving wheel cavity, a fixed head, a polygonal guide hole, a shaft head hole, a circular hole and a guide stop block arranged on the driving wheel cavity; the axis of the circular hole coincides with the axis of the driving wheel cavity;
The transmission seat comprises a polygonal body, a hemispherical cavity arranged at the top and a head arranged at the lower part, and an internal threaded hole with a lower opening is arranged on the head;
the driving wheel seat is arranged in a driving cavity of the vertical shaft, the fixed head is inserted into the fixed cavity, the external threaded joint of the transmission rod extends into the polygonal guide hole, the polygonal body part of the transmission seat is in sliding fit with the polygonal guide hole, the head is inserted into the reset spring, and the reset spring is in supporting fit with the bottom plate of the rotating cavity; the head of the external thread is screwed with the internal thread hole; the shaft head of the driving wheel is in rotary fit with the shaft head hole, the guide stop block is matched with the guide stop groove, the ball body is arranged in the hemispherical cavity, and the ball body is matched with the driving wheel.
2. A central brake medical castor as claimed in claim 1, wherein: the driving wheel seat is made by buckling two half bodies,
The semi-body comprises a semi-driving wheel cavity, a semi-guiding stop block, a semi-polygonal hole, a semi-fixed head, a shaft head hole and a circular hole.
3. A central brake medical castor as claimed in claim 1, wherein: the driving cavity is provided with an annular groove and further comprises a clamp spring, and the clamp spring is embedded with the annular groove and is matched and positioned with the top of the driving wheel seat.
4. A medium brake medical castor according to claim 1,2 or 3, wherein: also comprises a pressing plate and a top cover,
The pressing plate comprises a convex cavity with an upper opening arranged in the center and a circular hole arranged on a bottom plate of the convex cavity;
The top plate of the top cover is provided with a rotating hole;
the bottom plate of the driving cavity is provided with an annular seat body;
the convex cavity of the pressing plate is in supporting fit with the inner ring of the bearing, the annular seat body is attached to the bottom plate of the convex cavity, the upper part of the annular seat body rotates in the rotating hole, and the top cover is buckled with the upper end of the vertical shaft seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110750296.9A CN115246286B (en) | 2021-07-01 | 2021-07-01 | Medical castor with central control brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110750296.9A CN115246286B (en) | 2021-07-01 | 2021-07-01 | Medical castor with central control brake |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115246286A CN115246286A (en) | 2022-10-28 |
| CN115246286B true CN115246286B (en) | 2024-04-26 |
Family
ID=83696913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110750296.9A Active CN115246286B (en) | 2021-07-01 | 2021-07-01 | Medical castor with central control brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115246286B (en) |
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| GB2061105A (en) * | 1979-09-17 | 1981-05-13 | Stein & Co Paul Vom | Castors |
| US5242035A (en) * | 1990-11-06 | 1993-09-07 | Albert Schulte Sohne Gmbh. & Co. | Caster with pivotable two-armed wheel brake |
| US9139043B1 (en) * | 2014-04-23 | 2015-09-22 | Der Sheng Co. Ltd. | Central-controlled double wheel structure |
| DE202018106876U1 (en) * | 2018-12-04 | 2019-02-06 | Sunny Castors Co., Ltd. | caster |
| CN210416085U (en) * | 2019-07-18 | 2020-04-28 | 江苏申牌万向轮有限公司 | Novel central control caster |
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2021
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2061105A (en) * | 1979-09-17 | 1981-05-13 | Stein & Co Paul Vom | Castors |
| US5242035A (en) * | 1990-11-06 | 1993-09-07 | Albert Schulte Sohne Gmbh. & Co. | Caster with pivotable two-armed wheel brake |
| US9139043B1 (en) * | 2014-04-23 | 2015-09-22 | Der Sheng Co. Ltd. | Central-controlled double wheel structure |
| DE202018106876U1 (en) * | 2018-12-04 | 2019-02-06 | Sunny Castors Co., Ltd. | caster |
| CN210416085U (en) * | 2019-07-18 | 2020-04-28 | 江苏申牌万向轮有限公司 | Novel central control caster |
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| CN115246286A (en) | 2022-10-28 |
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