CN117773542A - Switch cover screwing mechanism, switch cover equipment and method - Google Patents
Switch cover screwing mechanism, switch cover equipment and method Download PDFInfo
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- CN117773542A CN117773542A CN202311838905.1A CN202311838905A CN117773542A CN 117773542 A CN117773542 A CN 117773542A CN 202311838905 A CN202311838905 A CN 202311838905A CN 117773542 A CN117773542 A CN 117773542A
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Abstract
The device comprises a base frame, a driving shaft penetrating through the base frame, a spring seat sleeved on the driving shaft, a screwing shaft sleeved on the driving shaft, a spring arranged between the spring seat and the screwing shaft, a one-way joint arranged between the spring and the screwing shaft, a plurality of first ratchet teeth arranged on the screwing shaft, a plurality of second ratchet teeth arranged on the one-way joint and used for being connected with the plurality of first ratchet teeth in a matching way, and a screwing head inserted at one end of the screwing shaft; the driving shaft, the one-way joint and the screwing shaft synchronously rotate, and the one-way joint axially slides on the driving shaft; when the driving shaft moves to close the cover, the one-way joint is abutted with the screwing shaft, so that the first ratchet teeth and the second ratchet teeth are meshed with each other, and the torque force output when the driving shaft closes the cover is fixed; the invention can accurately control the torsion of the closing cover, ensure the tightness of the sample tube after closing the cover and improve the assembly efficiency and the use effect.
Description
Technical Field
The invention relates to the field of medical equipment, in particular to a cap opening and closing screwing mechanism, cap opening and closing equipment and a cap opening and closing method.
Background
In the detection field, mechanical automation operation is often adopted to improve the cover opening efficiency in order to improve the detection efficiency; in the prior art, an automatic cover opening and closing device for tightening a sample tube cover comprises a screwing head, a driving mechanism for driving the screwing head and a handle, wherein the driving mechanism is connected with the rear end of the screwing head; after the screwing head and the sample tube cover are aligned, the driving mechanism works to drive the screwing head to rotate so as to screw the sample tube cover tightly; however, in the prior art, when the automatic cover opening and closing device is used for opening and closing the sample tube cover, the device cannot accurately control the torque of the cover closing, so that the torque of the cover closing is too large to cause the sliding teeth of the screw teeth of the sample tube cover, the sample tube cannot ensure the tightness of the sample tube to generate leakage, and when the sample tube cover is screwed down by adopting the existing automatic cover opening and closing device, the position of the sample tube has deviation because the sample tube is placed in a carrier and has a gap with the carrier, the screwing head of the switch cover is difficult to position when being inserted into the spline of the sample tube, the spline on the screwing head cannot be aligned with the tube cover of the sample tube, and the screwing head is difficult to be clamped into the tube cover of the sample tube, so that screwing operation cannot be performed on the sample tube; for example, chinese patent 202010692291.0 discloses a screw cap and shear system for a pharyngeal swab sampling system comprising a clamping assembly and a screw cap assembly, the clamping assembly having a sample retention tube clamped thereon; the screw cap subassembly is including the support frame that has the screw motor, ball nut on the fixed support frame, with ball nut complex ball screw, the flexible spline shaft of ball screw and screw motor is twisted, the centre gripping gasbag of being connected with ball screw, screw motor 2 is rotatory through flexible spline shaft drive ball screw, simultaneously under ball nut's spacing effect, thereby make the fixed centre gripping gasbag produce rotatory and decline motion under the ball screw, when the bottle lid of sample preservation test tube is wrapped up completely to centre gripping gasbag inner chamber, the centre gripping to sample preservation test tube bottle lid is accomplished, screw the motor reversal afterwards, thereby drive ball screw counter-rotating, and then centre gripping gasbag produces rotatory and rising motion, thereby accomplish the unscrewing to sample preservation test tube bottle lid, this embodiment structure and easy operation, but unable accurate control screw motor is the torsion of output when closing the lid, lead to the user can't be when closing the lid operation, thereby make the moment of closing the lid too big cause sample preservation test tube bottle lid screw tooth sliding tooth.
Therefore, there is a need to provide a new solution to overcome the above-mentioned drawbacks.
Disclosure of Invention
The invention aims to provide a switch cover screwing mechanism and switch cover equipment capable of effectively solving the technical problems.
In order to achieve the purpose of the invention, the following technical scheme is adopted:
the utility model provides a switch cover twist head mechanism which is arranged in switch cover equipment, its characterized in that: the device comprises a base frame, a driving shaft penetrating through the base frame, a spring seat sleeved on the driving shaft, a screwing shaft sleeved on the driving shaft, a spring arranged between the spring seat and the screwing shaft, a one-way joint arranged between the spring and the screwing shaft, a plurality of first ratchet teeth arranged on the screwing shaft, a plurality of second ratchet teeth arranged on the one-way joint and used for being in matched connection with the first ratchet teeth, and a screwing head inserted at one end of the screwing shaft;
the driving shaft, the one-way joint and the screwing shaft synchronously rotate, and the one-way joint axially slides on the driving shaft; when the driving shaft moves to close the cover, the one-way joint is abutted with the screwing shaft, so that the first ratchet teeth and the second ratchet teeth are meshed with each other, and the torque force output when the driving shaft closes the cover is fixed.
Further, the plurality of first ratchet teeth are circumferentially arranged at intervals at one end of the screwing shaft, and the plurality of second ratchet teeth are circumferentially arranged at intervals at one end of the one-way joint;
wherein, one side of first ratchet tooth and one side of second ratchet tooth all are equipped with the inclined plane, first ratchet tooth and second ratchet tooth pass through the intermeshing of inclined plane.
Further, the driving shaft is in positioning connection in the base frame through a spring seat and a screwing shaft, the spring seat is clamped on the driving shaft, and two ends of the spring are respectively abutted with the spring seat and the one-way joint;
the novel driving device comprises a base frame, wherein a plurality of holes are formed in the base frame, driving shafts penetrate through the base frame through the holes and rotate in the base frame, at least 2 driving shafts are arranged in the base frame, the cross section of any driving shaft is of a round corner rectangular structure with a long side being a line segment and a wide side being an arc line, and through holes matched with the shape structure of the driving shafts are formed in one-way joints.
Further, one end of the screwing head shaft is provided with a round table with a trapezoid cross section, the diameter of the top surface of the round table is smaller than that of the bottom surface, and the screwing head is provided with a clamping groove for being mutually inserted with the round table.
Further, a convex block extends on the round table, an arc-shaped surface is arranged at the top end of the convex block, and an assembly hole which is in positioning connection with the circumference direction of the convex block is formed at the bottom end of the clamping groove;
the inner wall of the clamping groove is surrounded with an annular cavity, and the diameter length of the annular cavity is larger than the diameter length of the bottom surface of the round table.
Further, the one end that the head axle sleeve was equipped with the head of twisting runs through the bed frame and extends to the bed frame outside, the one end annular interval of head of twisting is provided with a plurality of splines, it has the primary positioning round platform to twist head one end extension near the spline, be equipped with the fine positioning round platform on the primary positioning round platform.
Further, the invention also relates to a switch cover device adopting the switch cover screwing mechanism, and the switch cover device also comprises a handheld shell, a motor arranged in the handheld shell, a first gear mechanically connected with the motor, a plurality of second gears meshed with the first gear, and a plurality of third gears meshed with the second gears and mechanically connected with the driving shaft;
the two ends of the base frame are connected with the inner wall of the shell in a clamping mode, the third gear drives the driving shaft to move, the second gear drives the third gear and the first gear to rotate in the same direction, when the motor drives the driving shafts to rotate along the first direction, the screwing head simultaneously opens the plurality of sample tube covers, and when the motor drives the driving shafts to rotate along the second direction, the screwing head simultaneously closes the plurality of sample tube covers.
Further, the bottom of holding the shell is pegged graft and is had the charging seat, the one end of holding the shell is equipped with the control button that control motor rotated along first direction or second direction.
In addition, in order to achieve the above object, the present application also provides a control method of a cover opening and closing apparatus, the method being for the cover opening and closing apparatus as described above, the method comprising the steps of:
a1, holding the handheld shell by one hand, and abutting the plurality of screwing heads against the plurality of sample tube covers in a one-to-one correspondence manner;
a2, continuously pressing the control button by a thumb, so that the motor drives the first gear to rotate along a first direction, the first gear drives the left and right second gears adjacent to the first gear to rotate respectively, the second gears drive the third gears meshed with the second gears to rotate synchronously with the first gears respectively, the plurality of third gears drive the driving shafts to rotate, and the screwing head and the driving shafts rotate cooperatively to open the sample tube cover, so that the operation is completed.
Further, a release button is arranged at the top of the handheld shell, a release plate is movably connected to the bottom of the handheld shell, a push rod is arranged between the release plate and the release button, the screwing shaft penetrates through the release plate, and the release button is pressed to enable the push rod to push the release plate to vertically move downwards along the screwing shaft; the method further comprises the steps of:
a4, holding the handheld shell by one hand, and abutting the sample tube covers on the handheld shell with the sample tubes in a one-to-one correspondence manner;
a5, continuously pressing the control button by a thumb to enable the motor to drive the first gear to rotate along a second direction, respectively driving the left and right second gears adjacent to the first gear to rotate, respectively driving the third gears meshed with the second gears to synchronously rotate with the first gear, driving the driving shafts to rotate by the plurality of third gears, and enabling the screwing heads to cooperatively rotate with the driving shafts so as to close the tube covers of the sample tubes;
a6, continuously pressing the release button by a thumb, pushing the release plate to vertically move downwards along the screwing shaft by the push rod, enabling the screwing head to move upwards relative to the release plate after the release plate is abutted with the sample tube cover, and enabling the screwing head to be separated from the sample tube cover by pressing the sample tube cover by the release plate;
and a7, loosening the release button by the thumb, and vertically and upwardly pulling the release plate back along the screwing shaft by the push rod, wherein the release plate is reset in the handheld shell, so that the operation is completed.
The invention provides a switch cover screwing mechanism which comprises a driving shaft and a base frame, wherein a spring seat, a spring, a one-way joint and a screwing shaft are sequentially sleeved on the driving shaft, a first ratchet tooth is arranged on the one-way joint, a second ratchet tooth which can be meshed with the first ratchet tooth is arranged on the screwing shaft, when the switch cover screwing mechanism is used, the driving shaft is spliced with switch cover equipment, the base frame is clamped with the switch cover equipment, the switch cover equipment is opened to enable the driving shaft to rotate in the base frame, the spring is driven by the spring seat to provide axial pressure for the one-way joint, so that the first ratchet tooth is meshed with the second ratchet tooth, the spring seat is pushed by the one-way joint along the driving shaft, the driving shaft drives the one-way joint to rotate relative to the screwing shaft along the tooth back of the first ratchet tooth, fixed torsion force is ensured to be output in the closing direction of the cover, the torsion force of the closing cover can be accurately controlled, the tightness of the sample pipe after the cover is closed is ensured, and the assembly efficiency and the use effect are improved.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention.
Fig. 1 is a schematic view of the product structure of the first embodiment.
Fig. 2 is an exploded view of the product of the first embodiment.
Fig. 3 is a sectional view of the product structure of the first embodiment.
Fig. 4 is a schematic view of the screwing shaft of the first embodiment.
Fig. 5 is a schematic view of the screwing head of the first embodiment.
Fig. 6 is a schematic view of the internal structure of the screw head of the first embodiment.
Fig. 7 is a schematic structural view of a cover opening and closing apparatus of the second embodiment.
Fig. 8 is a sectional view of the opening and closing cover apparatus of the second embodiment.
In the figure: 1. drive shaft, 2, base, 3, spring seat, 4, spring, 5, one-way joint, 6, drive head, 7, drive head, 8, boss, 9, boss, 10, primary positioning boss, 11, secondary positioning boss, 12, mounting hole, 13, card slot, 14, first ratchet tooth, 15, second ratchet tooth, 16, through hole, 17, annular cavity, 18, spline, 19, aperture, 20, hand-held housing, 21, release button, 22, motor, 23, first gear, 24, second gear, 25, release plate, 26, push rod, 27, third gear, 28, control button, 29.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the following description will be made in detail with reference to the technical solutions in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments.
In the description of the present invention, it should be understood that the terms "center," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present invention. When an element is referred to as being "fixed" to another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
As shown in fig. 1 to 6, a switch cover screwing mechanism is used in a switch cover device and comprises a base frame 2, a driving shaft 1 penetrating through the base frame 2, a spring seat 3 and a screwing shaft 6 which are sleeved on the driving shaft 1, a spring 4 arranged between the spring seat 3 and the screwing shaft 6, a one-way joint 5 arranged between the spring 4 and the screwing shaft 6, a first ratchet tooth 14 arranged on the screwing shaft 6, a second ratchet tooth 15 arranged on the one-way joint 5, and a screwing head 7 inserted into one end of the screwing shaft 6; wherein, the driving shaft 1, the one-way joint 5 and the screwing shaft 6 synchronously rotate, and the one-way joint 5 axially slides on the driving shaft 1; when the driving shaft 1 performs the cap closing action, the first ratchet teeth 14 are meshed with the second ratchet teeth 15, the driving shaft 1 drives the one-way joint 5 to rotate relative to the screwing head shaft 6 along the tooth back of the first ratchet teeth 14, and the one-way joint 5 pushes the spring 4 to compress the spring seat 3 along the driving shaft 1, so that the torque force output by the driving shaft 1 in the cap closing direction is fixed.
Specifically, as shown in fig. 1 to 6, a plurality of first ratchet teeth 14 are circumferentially spaced at one end of the screwing shaft 6, a plurality of second ratchet teeth 15 are circumferentially spaced at one end of the unidirectional joint 5, inclined surfaces are respectively arranged on one side of the first ratchet teeth 14 and one side of the second ratchet teeth 15, and the first ratchet teeth 14 and the second ratchet teeth 15 are mutually meshed through the inclined surfaces; the inclined plane is trapezoid, the inclined plane is arranged on the right side surface of the first ratchet wheel tooth 14, a first trapezoid plane which is vertically arranged is arranged on the front surface of the first ratchet wheel tooth 14, a second trapezoid plane which is vertically arranged is arranged on the rear surface of the first ratchet wheel tooth 14, the top edge length of the second trapezoid plane is larger than the fixed edge length of the first trapezoid plane, the bottom edge length of the second trapezoid plane is larger than the bottom edge length of the first trapezoid plane, one end of the inclined plane is deviated to the front surface and inclines, a rectangular plane which is vertically arranged is arranged on the left side surface of the first ratchet wheel tooth 14, a gap is arranged between any two first ratchet wheel teeth 14, and the gap is positioned between the rectangular plane and the inclined plane; the second ratchet teeth 15 are used for being inserted into gaps between two adjacent first ratchet teeth 14, the second ratchet teeth 15 are similar to the first ratchet teeth 14 in structure, in the second ratchet teeth 15, inclined planes are located on the left side face of the second ratchet teeth 15, a third trapezoid plane which is vertically arranged is arranged on the front face of the second ratchet teeth 15, a fourth trapezoid plane which is vertically arranged is arranged on the rear face of the second ratchet teeth 15, the top edge length of the third trapezoid plane is larger than the fixed edge length of the fourth trapezoid plane, the bottom edge length of the third trapezoid plane is larger than the bottom edge length of the fourth trapezoid plane, one end of each inclined plane is inclined towards the rear face, gaps are formed between the rectangular plane of any one second ratchet tooth 15 and the inclined plane of the second ratchet tooth 15 adjacent to the second ratchet tooth 15, when the inclined plane of any one second ratchet tooth 15 is inserted into the gaps between two adjacent first ratchet teeth 14, the inclined planes of the second ratchet teeth 15 are correspondingly abutted with the inclined planes of one first ratchet tooth 14, the rectangular planes of the second ratchet teeth 15 are correspondingly abutted with the rectangular planes of the other second ratchet teeth 15, the rectangular planes of the second ratchet teeth 15 are conveniently abutted with the rectangular planes of the second ratchet teeth 15, the first ratchet teeth 14 are conveniently inclined to the rear face, the second ratchet teeth 15 are firmly meshed with the first ratchet teeth 14, and the opposite sides are firmly prevented from being meshed with the first ratchet teeth 15, and firmly.
Specifically, as shown in fig. 1 to 6, a plurality of openings 19 are formed in the base frame 2, at least 2 driving shafts 1 are arranged in the base frame 2, the driving shafts 1 penetrate through the base frame 2 through the openings 19 and rotate in the base frame 2, the spring seat 3, the spring 4, the one-way joint 5 and the screwing shaft 6 are sequentially arranged on the driving shafts 1, and two ends of the spring 4 are respectively abutted against the spring seat 3 and the one-way joint 5; according to the invention, the spring seat 3 is clamped on the driving shaft 1 and is fixedly connected with the position, the spring 4 and the one-way joint 5 are sleeved on the driving shaft 1, the spring 4 and the one-way joint 5 move upwards or downwards in the base frame 2 along the driving shaft 1, the screwing shaft 6 is sleeved on the driving shaft 1, one end of the screwing shaft 6 is clamped with the base frame 2, the driving shaft 1 is axially positioned in the base frame 2 through the spring seat 3 and the screwing shaft 6, when the driving shaft 1 moves upwards, downwards or rotates on the base frame 2 through the opening, the spring seat 3 moves cooperatively in the base frame 2 along with the driving shaft 1, when the screwing head 7 is abutted with the sample cover, the driving shaft 1 drives the screwing shaft 6 to vertically move upwards relative to the base frame 2, the screwing shaft 6 moves upwards to be abutted with the one-way joint 5, the one-way joint 5 continuously presses the spring 4, the spring 4 generates elastic deformation to press the spring seat 3, the first ratchet teeth 14 and the second ratchet teeth 15 are meshed with the first ratchet teeth 14 and the second ratchet teeth 15, and the two ends of the spring 4 are respectively pressed on the spring seat 3 and the one-way joint 5, so that the spring 4 can provide axial pressure of the first ratchet teeth 14 and the second ratchet teeth 15, the axial pressure of the second ratchet teeth 15 is conveniently pressed against the first ratchet teeth 14 and the second ratchet teeth 15 and the second ratchet teeth 6, and the elastic ratchet teeth 15 are meshed with the elastic joint 6, and the one-way joint 6 is kept in a rotation direction and the one-way joint 6 is kept in a consistent, and the rotation direction is meshed with the elastic joint 14, and the elastic joint is tightly when the elastic joint is tightly pressed against the first ratchet teeth and the elastic joint is tightly, and the elastic joint is tightly, and pressed.
Specifically, as shown in fig. 1 to 6, the cross section of any one driving shaft 1 is in a rounded rectangular structure with a long side as a line segment and a wide side as an arc, and the one-way joint 5 is provided with a through hole 16 matched with the shape structure of the driving shaft 1; the driving shaft 1 is matched and clamped with the one-way joint 5 through a round corner rectangular structure, the one-way joint 5 is sleeved on the driving shaft 1 and limits the movement state of the one-way joint 5 on the driving shaft 1, so that the one-way joint 5 can only move upwards or downwards along the driving shaft 1 in the vertical direction while ensuring the connection structure of the driving shaft 1 and the one-way joint 5, and idle running between the one-way joint 5 and the driving shaft 1 is avoided.
Specifically, as shown in fig. 1 to 6, one end of the screwing head shaft 6, which is close to the screwing head shaft, is provided with a round platform 8 with a trapezoid structure in section, the round platform 8 is extended with a convex block 9, the convex block 9 and the round platform 8 are of an integrated structure, the bottom surface of the convex block 9 and the top surface of the round platform 8 are positioned on the same plane, the diameter of the top surface of the round platform 8 is smaller than that of the bottom surface, the screwing head 7 is provided with a clamping groove 13 which is used for being mutually spliced with the round platform 8, the bottom end of the clamping groove 13 is provided with an assembly hole 12 which is in positioning connection with the convex block 9 in the circumferential direction, the inner wall of the clamping groove 13 is surrounded with an annular cavity 17, and the diameter length of the annular cavity 17 is larger than that of the bottom surface of the round platform 8; the round table 8 is arranged at one end of the screwing head shaft 6 far away from the first ratchet teeth 14, the round table 8 is spliced with the clamping groove 13, one end of the driving shaft 1 is spliced with one end of the screwing head shaft 6 provided with the first ratchet teeth 14 and drives the screwing head shaft 6 to cooperatively move, and the screwing head 7 is clamped on the screwing head shaft 6 through the assembly hole 12, so that the screwing head shaft 6 drives the screwing head 7 to cooperatively move and limits the screwing head 7 to move along the circumferential direction through the protruding block 9, and the screwing head shaft 6 and the screwing head 7 are prevented from sliding relatively; it is worth to say that, after round platform 8 pegging graft get into draw-in groove 13, the top of round platform 8 and the bottom butt of fluting 13, the bottom joint of round platform 8 gets into annular chamber 17 in, effectively consolidates the connection structure of twisting head 7 and twisting head axle 6, can prevent to twist head 7 and follow and twist head axle 6 and drop.
It should be noted that, as shown in fig. 1 to 6, the top end of the bump 9 is provided with an arc surface, the arc surface is symmetrically arranged at the top of the bump 9, and the bump 9 is conveniently inserted into the assembly hole 12 through the arc surface, so that the assembly hole 12 is conveniently positioned and connected with the bump 9 in the circumferential direction.
Specifically, as shown in fig. 1 to 6, the screwing shaft 6 is used for penetrating the base frame 2 and extending to the outside of the base frame 2 at one end of the screwing shaft 7, and a plurality of splines 18 are annularly arranged at one end of the screwing shaft 7 at intervals, so that the screwing shaft 7 can be conveniently and smoothly inserted into the sample tube cover.
Specifically, as shown in fig. 1 to 6, one end of the screwing head 7, which is close to the spline 18, extends to form a primary positioning round table 10, and a fine positioning round table 11 is arranged on the primary positioning round table 10; the fine positioning round table 11 and the primary positioning round table 10 are of an integrated structure, the fine positioning round table 11 and the primary positioning round table 10 are arranged in the same central line, the screwing head 7 can be conveniently inserted into a spline of the sample tube cover through the fine positioning round table 11 and the primary positioning round table 10, the position deviation of the sample tube cover can be further compatible, the screwing head 7 and the spline can be conveniently positioned, and the screwing head 7 can be smoothly inserted into the spline of the sample tube cover.
As shown in fig. 7 to 8, the present invention also relates to a cap opening and closing apparatus employing a cap opening and closing screwing mechanism, the cap opening and closing apparatus further comprising a hand-held housing 20, a motor 22 provided in the hand-held housing 20, a first gear 23 mechanically connected to the motor 22, a plurality of second gears 24 meshed with the first gear 23, a plurality of third gears 27 meshed with the plurality of second gears 24; wherein, two ends of the base frame 2 are clamped with the inner wall of the shell 20, the third gear 27 is mechanically connected with one end of the driving shaft 1 and drives the driving shaft 1 to cooperatively move, the second gear 24 drives the third gear 27 to rotate in the same direction as the first gear 23, and when the motor 22 controls a plurality of driving shafts 1 to rotate along the first direction, the screwing head 7 simultaneously opens a plurality of sample tube covers; when the motor 22 controls the plurality of driving shafts 1 to rotate in the second direction, the screwing head 7 simultaneously closes the plurality of sample tube caps.
Specifically, as shown in fig. 7 to 8, a release button 21 is disposed at the top of the handheld shell 20, a release plate 25 is movably connected to the bottom of the handheld shell 20, in the handheld shell 20, the release button 21, the motor 22, the driving shaft 1, the first gear 23, the driving shaft 1, the release plate 25 and the screwing head 7 are sequentially arranged from top to bottom, the release plate 25 can move upwards or downwards in the handheld shell 20, one end of the screwing head shaft 6 penetrates through the release plate 24, a push rod 26 is disposed between the release plate 25 and the release button 21, an elastic piece is disposed between the release button 21 and the push rod 26, the push rod 26 can push the release plate 25 to move downwards vertically along the screwing head shaft 6 by pressing the release button 21, and after the release button 21 is released, the elastic force generated by releasing compression of the elastic piece enables the push rod 26 to pull the release plate 25 upwards vertically along the screwing head shaft 6, and the release plate 25 is reset in the handheld shell 20.
Specifically, as shown in fig. 7 to 8, a plurality of second gears 24 are symmetrically installed in the handheld housing 20 with the first gear 23 as a center, and third gears 27 are installed in parallel at the bottoms of the second gears 24; the first gear 23 is arranged on the output shaft of the motor 22, the first gear 23 is meshed with the second gear 24, the output shaft of the motor 22 is spliced with the first gear 23, the plurality of second gears 24 are divided into two groups, one group of second gears 24 is arranged on any side of the first gear 23, the plurality of third gears 27 are arranged on the plurality of second gears 24 in parallel, and any one second gear 24 is arranged between two adjacent third gears 27 and meshed with the two adjacent third gears 27, so that when the motor 22 drives the first gear 23 to rotate, the second gears 24 drive the third gears 27 to synchronously rotate in the same direction, and the plurality of driving shafts 1 synchronously rotate in the same direction.
Specifically, as shown in fig. 7 to 8, a charging seat 29 is inserted into the bottom of the handheld shell 20, and a control button 28 for controlling the motor 22 to rotate in the first direction or the second direction is disposed at one end of the handheld shell 20; one side of the handheld shell 20 is provided with a charging interface, an electric connection socket matched with the electric connection socket is arranged in the charging seat 29, the handheld shell 20 is plugged in the charging seat 29, the charging interface and the electric connection socket can enable the charging seat 29 to give electric quantity to the handheld shell 20, the control button 28 is arranged at one end of the handheld shell 20 close to the release button 21, the control button 28 is arranged at the rear of the release button 20, the control button 28 can be stirred left or right, when a user stirs left and continuously presses the control button 28, the motor 22 rotates towards a first direction, when the user stirs right and continuously presses the control button 28, the motor rotates towards a second direction, the first direction is anticlockwise, and the second direction is clockwise.
In the use process, the invention can realize one-hand operation, and when a user needs to open the sample tube cover, the user holds the handheld shell 20 by one hand and lifts the handheld shell 20 from the charging seat 29; then, the twisting heads 7 are abutted against the sample tube covers in a one-to-one correspondence manner, and the fine positioning round table 11 and the primary positioning round table 10 are inserted into the spline of the sample tube cover; finally, the user continuously presses the control button 28 leftwards through the thumb, so that the motor 22 drives the first gear 23 to rotate along the first direction, the first gear 23 drives the left and right second gears 24 adjacent to the first gear 23 to rotate respectively, the second gears 24 drive the third gears 27 meshed with the second gears to synchronously rotate with the first gear 23, the plurality of third gears 27 drive the driving shaft 1 to rotate, the screwing head 7 and the driving shaft 1 rotate cooperatively to open the sample tube cover, and the user places the handheld shell 20 with the sample tube cover on the charging seat 29 after opening; when the user needs to close the sample tube cover, the user holds the handheld shell 20 with one hand, and the handheld shell 20 of the sample tube cover is lifted from the charging seat 29; then, the sample tube covers on the hand-held shell 20 are abutted against the sample tubes in a one-to-one correspondence; then, the user continuously presses the control button 28 to the right through the thumb, so that the motor 22 drives the first gear 23 to rotate along the second direction, the first gear 23 drives the left and right second gears 24 adjacent to the first gear 23 to rotate respectively, the second gears 24 drive the third gears 27 meshed with the second gears to synchronously rotate with the first gears 23, the plurality of third gears 27 drive the driving shaft 1 to rotate, and the screwing head 7 and the driving shaft 1 rotate cooperatively to close the sample tube cover; finally, after closing the sample tube cover, the user continuously presses the release button 21 by thumb to push the release plate 25 to move vertically downwards along the screwing shaft 6, after the release plate 25 is abutted with the sample tube cover, the screwing head 7 moves upwards relative to the release plate 25, the release plate 25 presses the sample tube cover to separate the screwing head 7 from the sample tube cover, after the thumb releases the release button 21, the push rod 26 pulls back the release plate 25 vertically upwards along the screwing shaft 6, and the release plate 25 is reset in the handheld shell 20.
Working principle: the drive shaft 1 is in plug connection with the switch cover equipment, the base frame 2 is in plug connection with the switch cover equipment, the switch cover equipment is opened to enable the drive shaft 1 to rotate in the base frame 2, the spring 4 is driven by the spring seat 3 to provide axial pressure for the one-way joint 5, the first ratchet teeth 14 are meshed with the second ratchet teeth 15, the one-way joint 5 pushes the spring 4 to compress the spring seat 3 along the drive shaft 1, the drive shaft 1 drives the one-way joint 5 to rotate relative to the screwing head shaft 6 along the tooth backs of the first ratchet teeth 14, the torque force for fixing the screw cap in the screw cap closing direction is ensured, and the torque force for closing the cap can be accurately controlled.
Standard parts used in the invention can be purchased from the market, special-shaped parts can be customized according to the description of the specification and the drawings, the specific connection modes of all parts adopt conventional means such as mature bolts, rivets and welding in the prior art, the machinery, the parts and the equipment adopt conventional modes in the prior art, and the circuit connection adopts conventional connection modes in the prior art, so that details are not described in detail in the specification, and the invention belongs to the prior art known to the person skilled in the art.
It will be understood that modifications and variations will be apparent to those skilled in the art from the foregoing description, and it is intended that all such modifications and variations be included within the scope of the following claims.
Claims (10)
1. The utility model provides a switch cover twist head mechanism which is arranged in switch cover equipment, its characterized in that: the device comprises a base frame (2), a driving shaft (1) penetrating through the base frame (2), a spring seat (3) sleeved on the driving shaft (1), a screwing shaft (6) sleeved on the driving shaft (1), a spring (4) arranged between the spring seat (3) and the screwing shaft (6), a one-way joint (5) arranged between the spring (4) and the screwing shaft (6), a plurality of first ratchet teeth (14) arranged on the screwing shaft (6), a plurality of second ratchet teeth (15) arranged on the one-way joint (5) and used for being connected with the plurality of first ratchet teeth (14) in a matching manner, and a screwing head (7) inserted at one end of the screwing shaft (6);
the driving shaft (1), the one-way joint (5) and the screwing shaft (6) synchronously rotate, and the one-way joint (5) axially slides on the driving shaft (1); when the driving shaft (1) executes the cap closing action, the one-way joint (5) is abutted with the screwing head shaft (6), so that the first ratchet teeth (14) and the second ratchet teeth (15) are meshed with each other, and the torque force output when the driving shaft (1) closes the cap is fixed.
2. A switch cover screwing mechanism as defined in claim 1, wherein: the plurality of first ratchet teeth (14) are circumferentially arranged at intervals at one end of the screwing shaft (6), and the plurality of second ratchet teeth (15) are arranged at intervals at one end of the one-way joint (5);
wherein, one side of the first ratchet wheel tooth (14) and one side of the second ratchet wheel tooth (15) are respectively provided with an inclined plane, and the first ratchet wheel tooth (14) and the second ratchet wheel tooth (15) are mutually meshed through the inclined planes.
3. A switch cover screwing mechanism as defined in claim 2, wherein: the driving shaft (1) is in positioning connection in the base frame (2) through the spring seat (3) and the screwing shaft (6), the spring seat (3) is clamped on the driving shaft (1), and two ends of the spring (4) are respectively abutted with the spring seat (3) and the one-way joint (5);
the novel driving device comprises a base frame (2), and is characterized in that a plurality of holes (19) are formed in the base frame (2), the driving shaft (1) penetrates through the base frame (2) through the holes (19) and rotates in the base frame (2), at least 2 driving shafts (1) are arranged in the base frame (2), the cross section of any driving shaft (1) is of a round corner rectangular structure with a long side being a line segment and a wide side being an arc line, and a through hole (16) matched with the shape structure of the driving shaft (1) is formed in a one-way joint (5).
4. A switch cover screwing mechanism as defined in claim 3, wherein: one end of the screwing head shaft (6) is provided with a round table (8) with a trapezoid cross section, the top surface diameter of the round table (8) is smaller than the bottom surface diameter, and the screwing head (7) is provided with a clamping groove (13) for being mutually spliced with the round table (8).
5. The switch cover screwing mechanism as defined in claim 4, wherein: the round table (8) is extended with a lug (9), the top end of the lug (9) is provided with an arc surface, and the bottom end of the clamping groove (13) is provided with an assembly hole (12) which is in positioning connection with the lug (9) in the circumferential direction;
the inner wall of the clamping groove (13) is provided with an annular cavity (17) in a surrounding mode, and the diameter length of the annular cavity (17) is larger than the diameter length of the bottom surface of the round table (8).
6. A switch cover screwing mechanism as defined in claim 5, wherein: the one end that twists first axle (6) cover was equipped with twists first (7) runs through bed frame (2) and extends to bed frame (2) outside, the one end annular interval of twisting first (7) is provided with a plurality of splines (18), it has primary positioning round platform (10) to twist first (7) near spline (18) one end extension, be equipped with fine positioning round platform (11) on primary positioning round platform (10).
7. A switch cover apparatus characterized by: comprising the switch cover screwing mechanism of claim 6, the switch cover device further comprising a hand-held housing (20), a motor (22) provided in the hand-held housing (20), a first gear (23) mechanically connected to the motor (22), a number of second gears (24) meshed with the first gear (23), a number of third gears (27) meshed with the number of second gears (24) and mechanically connected to the drive shaft (1);
the two ends of the base frame (2) are clamped with the inner wall of the shell (20), the third gear (27) drives the driving shaft (1) to move, the second gear (24) drives the third gear (27) to rotate in the same direction with the first gear (23), when the motor (22) drives the driving shafts (1) to rotate along the first direction, the screwing head (7) simultaneously opens a plurality of sample tube covers, and when the motor (22) drives the driving shafts (1) to rotate along the second direction, the screwing head (7) simultaneously closes the plurality of sample tube covers.
8. A switch cover apparatus as claimed in claim 7, wherein: the bottom of handheld shell (20) is pegged graft and is had charging seat (29), the one end of handheld shell (20) is equipped with control button (28) that control motor (22) rotated along first direction or second direction.
9. A method, characterized by: the method for a switch cover device as claimed in claim 8, the method comprising the steps of:
a1, holding the handheld shell (20) by one hand, and abutting the plurality of screwing heads (7) against the plurality of sample tube covers in a one-to-one correspondence manner;
a2, the thumb continuously presses the control button (28) so that the motor (22) drives the first gear (23) to rotate along a first direction, the first gear (23) drives the left and right second gears (24) adjacent to the first gear to rotate respectively, the second gears (24) drive the third gears (27) meshed with the second gears to synchronously rotate with the first gears (23) respectively, the plurality of third gears (27) drive the driving shaft (1) to rotate, and the screwing head (7) and the driving shaft (1) cooperatively rotate to open the tube cover of the sample tube to finish the operation.
10. A method as claimed in claim 9, wherein: the top of the handheld shell (20) is provided with a release button (21), the bottom of the handheld shell (20) is movably connected with a release plate (25), a push rod (26) is arranged between the release plate (25) and the release button (21), the screwing head shaft (6) penetrates through the release plate (24), and the release button (21) is pressed so that the push rod (26) pushes the release plate (25) to vertically move downwards along the screwing head shaft (6); the method further comprises the steps of:
a4, holding the handheld shell (20) by one hand, and abutting the sample tube covers on the handheld shell (20) with the sample tubes in a one-to-one correspondence manner;
a5, continuously pressing the control button (28) by a thumb, so that the motor (22) drives the first gear (23) to rotate along a second direction, the first gear (23) respectively drives the left and right second gears (24) adjacent to the first gear to rotate, the second gears (24) respectively drive the third gears (27) meshed with the second gears to synchronously rotate with the first gears (23), the plurality of third gears (27) drive the driving shaft (1) to rotate, and the screwing head (7) and the driving shaft (1) cooperatively rotate to close the tube cover of the sample tube;
a6, continuously pressing the release button (21) by a thumb, pushing the release plate (25) by the push rod (26) to vertically move downwards along the screwing shaft (6), enabling the screwing head (7) to move upwards relative to the release plate (25) after the release plate (25) is abutted with the sample tube cover, and enabling the screwing head (7) to be separated from the sample tube cover by pressing the sample tube cover by the release plate (25);
a7, the thumb releases the release button (21), the push rod (26) vertically pulls the release plate (25) upwards along the screwing shaft (6), and the release plate (25) is reset in the handheld shell (20) to finish the operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311838905.1A CN117773542A (en) | 2023-12-28 | 2023-12-28 | Switch cover screwing mechanism, switch cover equipment and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311838905.1A CN117773542A (en) | 2023-12-28 | 2023-12-28 | Switch cover screwing mechanism, switch cover equipment and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117773542A true CN117773542A (en) | 2024-03-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311838905.1A Pending CN117773542A (en) | 2023-12-28 | 2023-12-28 | Switch cover screwing mechanism, switch cover equipment and method |
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| Country | Link |
|---|---|
| CN (1) | CN117773542A (en) |
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