CN217888322U - Clamping structure and centrifugal equipment - Google Patents

Abstract

The utility model belongs to the technical field of centrifugal equipment, especially, relate to a clamping structure and centrifugal equipment. The clamping structure comprises a clamping seat and a cup seat detachably connected with the clamping seat; the top surface of the clamping seat is provided with a bead screw, and the clamping seat is provided with a first clamping piece; the bottom surface of the cup seat is provided with a positioning groove, and the cup seat comprises a second clamping piece matched with the first clamping piece; the ball screw is used for being clamped and embedded in the positioning groove to position the cup base after the second clamping piece is clamped and connected with the first clamping piece. The utility model has the advantages of simple structure, it is with low costs, the dismouting operation of cup and cassette is simple and easy, and need not to carry out quality distribution, is applicable to and carries out centrifugal treatment to the small sample.

Description

Clamping structure and centrifugal equipment

Technical Field

The utility model belongs to the technical field of centrifugal equipment, especially, relate to a clamping structure and centrifugal equipment.

Background

At present, in the biological or medical equipment industry, a plurality of symmetrically distributed containers (such as 2 or 4 centrifuge cups) are usually fixed on a rotating shaft of a motor through a centrifugal frame in a centrifugal device, so that the containers on the centrifugal frame are driven to rotate through the motor, and further, the function of uniformly mixing or separating substances placed in the containers is realized through the centrifugal motion of the containers. The method is suitable for processing a large number of samples, the mass of the container must be configured on the centrifugal rack, eccentricity is avoided, reasonable distribution of the mass on the centrifugal rack is difficult to realize for processing a small number of samples (such as a centrifugal cup), the structure of the scheme is complex, and the disassembly and the assembly are troublesome.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the complicated and troublesome technical problem of dismouting of centrifugal device structure among the prior art, a clamping structure and centrifugal device are provided.

In view of the above technical problems, an embodiment of the present invention provides a clamping structure, including a clamping seat and a cup seat detachably connected to the clamping seat; the top surface of the clamping seat is provided with a bead screw, and the clamping seat is provided with a first clamping piece; the bottom surface of the cup base is provided with a positioning groove, and the cup base comprises a second clamping piece matched with the first clamping piece; the ball screw is used for being clamped and embedded in the positioning groove to position the cup base after the second clamping piece is clamped and connected with the first clamping piece.

Optionally, the top surface of the clamping seat is provided with at least two mounting grooves at intervals for mounting the wave ball screws, and the positioning groove is arranged on the bottom surface of the cup seat at a position opposite to each mounting groove.

Optionally, the clamping seat is cylindrical, and the first clamping piece is arranged on the outer side wall of the clamping seat;

the cup holder comprises an annular plate which is convexly arranged on the bottom surface, and the central shaft of the annular plate is parallel to the axial direction of the clamping seat; the second clamping piece is arranged on the inner side wall of the annular plate; the annular plate and the bottom surface of the cup seat form a rotating space matched with the outer side wall of the clamping seat in a surrounding manner; the positioning groove is positioned in the rotating space.

Optionally, the first clamping piece is a clamping groove formed on the outer side wall of the clamping seat in a concave manner; the second clamping piece is a protruding block protruding from the inner side wall of the annular plate.

Optionally, the card slot includes an entry section and a sliding section in communication with the entry section; the lug enters the sliding section from the entering section and slides along the sliding section until the lug is clamped and embedded in the sliding section, and the second clamping piece is clamped and connected with the first clamping piece.

Optionally, the entering section is an elongated slot with an extending direction parallel to the axial direction of the clamping seat; the sliding section comprises an abutting surface which is arranged at a preset inclination angle with the inner side wall of the long groove; and after entering the sliding section from the entering section, the lug is jointed with the abutting surface and slides along the abutting surface.

Optionally, the sliding section further includes a stopper disposed on the abutting surface and spaced from the starting point by a preset distance; when the lug slides along the abutting surface to abut against the stop block, the lug is clamped and embedded in the sliding section; the starting point is a connection point of the abutting surface and the long groove.

Optionally, in a direction from the starting point toward the stopper in the sliding section, a distance between the abutment surface and the cartridge top surface gradually increases.

Optionally, at least two first clamping pieces are arranged on the outer side wall of the clamping seat at intervals; the inner side wall of the annular plate is provided with the second clamping parts corresponding to the positions of the first clamping parts one by one.

An embodiment of the utility model also provides a centrifugal device, including above-mentioned card structure, the centrifugal cup of connection on the cup to and connect the cassette and drive the rotatory driving piece of cassette.

The clamping structure of the utility model comprises a clamping seat and a cup seat detachably connected with the clamping seat; the top surface of the clamping seat is provided with a wave ball screw, and the clamping seat is provided with a first clamping piece; the bottom surface of the cup base is provided with a positioning groove, and the cup base comprises a second clamping piece matched with the first clamping piece; the ball screw is used for being clamped and embedded in the positioning groove to position the cup base after the second clamping piece is clamped and connected with the first clamping piece. It is right in needs the utility model discloses a before the material in centrifugal device's the centrifuge bowl carries out centrifugal motion, the second card that sets up on the centrifuge bowl through the cup is held a joint on a first card is held to the cup at first to fix a position the cup through the ripples pearl screw of inlay card in the constant head tank, later, it is rotatory to drive cup (and the centrifuge bowl of connection on the cup) of cassette and joint on the cassette through the driving piece, and then realizes mixing or the separation action to this material through the centrifugal motion of material in the centrifuge bowl. The utility model has the advantages of simple structure, it is with low costs, the dismouting operation of cup and cassette is simple and easy, and need not to carry out quality distribution, is applicable to and carries out centrifugal treatment to the small sample.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of a clamping structure according to an embodiment of the present invention.

Fig. 2 is an exploded schematic view of a holding structure according to an embodiment of the present invention.

Fig. 3 is a schematic cross-sectional view of a clamping structure according to an embodiment of the present invention.

Fig. 4 is a schematic perspective view of a clamping structure according to an embodiment of the present invention.

Fig. 5 is a perspective schematic structural view of a clamping structure according to an embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a centrifugal apparatus according to an embodiment of the present invention.

The reference numerals in the specification are as follows:

1. a card holder; 11. a wave bead screw; 12. a first retaining member; 121. entering a section; 122. a sliding section; 1221. an abutting surface; 1222. a stopper; 13. mounting grooves; 14. mounting holes; 2. a cup holder; 21. positioning a groove; 22. a second retaining member; 23. an annular plate; 24. a rotation space; 3. a centrifuge cup; 4. a drive member.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

It is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", "middle", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.

As shown in fig. 1 to 5, an embodiment of the present invention provides a clamping structure, including a clamping base 1 and a cup holder 2 detachably connected to the clamping base 1; a bead screw 11 is mounted on the top surface of the card holder 1 (the top surface of the card holder 1 refers to the upper end surface of the card holder 1 shown in fig. 3), and a first clamping piece 12 is arranged on the card holder 1; a positioning groove 21 is formed in the bottom surface of the cup holder 2 (the bottom surface of the cup holder 2 refers to a lower end surface opposite to the top surface of the clamping base 1 in fig. 3, and the lower end surface is located on the inner wall of the rotating space 24), and the cup holder 2 includes a second clamping member 22 adapted to the first clamping member 12; the ball screw 11 is used for being clamped in the positioning groove 21 to position the cup holder 2 after the second clamping piece 22 is clamped with the first clamping piece 12. Understandably, an accommodating cavity (not shown) is arranged inside the wave ball screw 11, an opening (not shown) is arranged at the top of the accommodating cavity of the wave ball screw 11, a spring (not shown) and a ball (not shown) abutted by the spring at the position of the opening are arranged in the accommodating cavity, when the ball is pressed, the ball moves towards the direction in which the spring is compressed under the action of the pressure, and at the moment, the spring is compressed to feed back a certain thrust. Therefore, in the embodiment, after the second retainer 22 is clamped with the first retainer 12, when the ball screw 11 faces the positioning groove 21, the ball of the ball screw 11 enters the positioning groove 21, the spring in the accommodating cavity is compressed, and a certain thrust is fed back to the ball, at this time, the ball is pressed in the positioning groove 21 by the spring, and the cup holder 2 is positioned at this position. Further, at least two mounting grooves 13 for mounting the wave ball screws 11 are arranged on the top surface of the holder 1 at intervals (the interval distance is set according to requirements, and is preferably uniformly arranged at intervals), and the positioning grooves 21 are arranged on the bottom surface of the cup holder 2 at positions opposite to the mounting grooves 13. Specifically, in the embodiment shown in fig. 1 to 5, four mounting grooves 13 are uniformly spaced on the cartridge 1, and four ball screws 11 are threadedly mounted in the mounting grooves 13, and the balls of the ball screws 11 are higher than the top surface of the cartridge 1 (i.e., at least a part of the balls are exposed on the top surface of the cartridge 1).

Understandably, when the cup holder 2 in this embodiment needs to be detached from the card holder 1, the elastic force of the spring of the ball screw 11 must be overcome, and when the two are detached or installed, because the thrust exerted by the spring to the ball can be transmitted to the cup holder 2, therefore, in the process of disassembling and assembling the cup holder 2 and the card holder 1, a certain gap exists between the cup holder 2 and the card holder 1 because of the elastic force of the spring, so that the friction force in the process of disassembling and assembling the cup holder 2 and the card holder 1 can be reduced, the installation is convenient, and the service life of each component is prolonged. Further, the detachable connection of the cup holder 2 and the card holder 1 can be realized by the clamping and separation of the first clamping member 12 and the second clamping member 22, and the shape and structure of the first clamping member 12 and the second clamping member 22 can be set according to requirements as long as the stable detachable connection is realized.

The embodiment of the utility model provides an in, the second card that sets up on cup 2 is held a 22 joint and is held after 12 on a first card is held, can fix a position cup 2 through the inlay card connection realization of ripples pearl screw 11 and constant head tank 21, cup 2 (and the centrifugal cup 3 of connection on cup 2) of joint on cassette 1 can be driven rotatoryly by cassette 1, and then make and install the material can carry out centrifugal motion in the centrifugal cup 3 on cup 2, and then realize the mixing or the separation action to material in the centrifugal cup 3. The utility model has the advantages of simple structure, it is with low costs, the dismouting operation of cup 2 and cassette 1 is simple and easy, and need not to carry out mass distribution, is applicable to and carries out centrifugal treatment to little sample.

In an embodiment, as shown in fig. 1, the card holder 1 is cylindrical, and the first clamping member 12 is disposed on an outer side wall of the card holder 1; the cylindrical card holder 1 can rotate around the axial direction under the drive of the driving piece 4. The cup holder 2 comprises an annular plate 23 which is convexly arranged on the bottom surface, and the central axis of the annular plate 23 is parallel to the axial direction of the clamping seat 1; the second retainer 22 is provided on an inner side wall of the annular plate 23; the annular plate 23 and the bottom surface of the cup holder 2 enclose a rotating space 24 matched with the outer side wall of the clamping seat 1; the positioning groove 21 is located in the rotation space 24. Specifically, when the card holder 1 extends into the rotation space 24 and rotates in the rotation space 24 relative to the cup holder 2, the first retaining member 12 and the second retaining member 22 can be clamped, and then the ball of the ball screw 11 on the top surface of the card holder 1 is clamped and embedded in the positioning groove 21 in the rotation space 24 (and also in the bottom surface of the cup holder 2), so as to finally realize the positioning and fixing clamping of the cup holder 2 and the card holder 1.

Further, as shown in fig. 1 to 5, at least two first clamping pieces 12 are arranged on the outer side wall of the clamping base 1 at intervals (the interval distance is set according to the requirement); the second retaining members 22 are arranged on the inner side wall of the annular plate 23 in a one-to-one correspondence with the positions of the first retaining members 12. That is, the utility model discloses in, can set up at least two sets of first cards that can correspond and realize the joint and hold a 12 and a 22 is held to the second card, so, can be so that the connection between cup 2 and the cassette 1 is more firm.

Further, as shown in fig. 1 and 2, the first retaining member 12 is a slot concavely formed on the outer side wall of the clamping base 1; the second retainer 22 is a projection provided on the inner side wall of the annular plate 23. As shown in fig. 1 and 5, two clamping grooves are formed in the clamping base 1, the protruding block of the cup base 2 can rotate into the clamping grooves, at this time, the two protrusions on the cup base 2 slightly deform after being screwed into the clamping grooves, and further, the protrusions are clamped and pressed on the side walls of the clamping grooves, and finally, clamping of the protrusions (the second clamping member 22) and the clamping grooves (the first clamping member 12) is achieved; if the cup holder 2 needs to be separated from the clamping seat 1, the cup holder 2 needs to be rotated reversely, friction force generated when the protrusion is extruded by the side wall of the clamping groove must be overcome, then the protrusion is separated from the clamping groove, and finally the disassembly between the cup holder 2 and the clamping seat 1 is completed.

In one embodiment, as shown in fig. 1 to 5, the card slot includes an entry section 121 and a sliding section 122 communicating with the entry section 121; when the protrusion enters the sliding section 122 from the entering section 121 and slides along the sliding section 122 until the protrusion is embedded in the sliding section 122, the second retaining member 22 is engaged with the first retaining member 12. That is, in this embodiment, after the protrusions of the cup holder 2 are aligned with the entry section 121 of the slot and enter the entry section 121 (as shown in fig. 1 to 3, when two sets of the first retaining member 12 and the second retaining member 22 are provided, the two slots are set to have the same size, and the distance between the two slots is set to be the same so as to facilitate installation, at this time, the two protrusions can be inserted into the two entry sections 121 simultaneously by aligning one of the protrusions with any one of the entry sections 121), only a certain angle (for example, 80 degrees) needs to be rotated, at this time, the positioning groove 21 on the cup holder 2 is aligned with the ball of the ball screw 11, and at this time, the ball of the ball screw 11 is clamped into the positioning groove 21 under the action of the spring, so that the cup holder 2 is positioned. And when the cup 2 need break away from cassette 1, must overcome the elasticity of ball screw 11's spring feedback to the ball, consequently, because install the cup 2 on cassette 1 or when dismantling cup 2 from cassette 1, all need rotatory cup 2, and rotatory in-process, because there is the elasticity of ball to exist, will make to have the clearance between cup 2 and the cassette 1 all the time, so, can reduce cup 2 and cassette 1 and rotate to twist into the friction of twisting out the in-process, be convenient for installation and dismantlement go on, product life has also been promoted.

In one embodiment, as shown in fig. 1, the inlet segment 121 is an elongated slot extending in a direction parallel to the axial direction of the cartridge 1; the sliding section 122 includes an abutting surface 1221 arranged at a preset inclination angle with the inner side wall of the long slot; after the protrusion enters the sliding section 122 from the entering section 121, the protrusion is engaged with the abutting surface 1221 and slides along the abutting surface 1221. That is, after the protrusion of the cup holder 2 aligns with and enters the elongated slot, the protrusion will enter the sliding section 122 by rotating the cup holder 2, and at this time, the protrusion will be attached to the abutting surface 1221, and along with the further rotation of the cup holder 2, the protrusion will slide along the abutting surface 1221, and then the protrusion will slightly deform and press the abutting surface 1221, and the first clamping member 12 and the second clamping member 22 can be clamped by the friction force generated between the two.

Further, as shown in fig. 1 to 5, the sliding section 122 further includes a stopper 1222 disposed on the abutting surface 1221 and spaced from the starting point by a preset distance; when the lug slides along the abutting surface 1221 to abut against the stop 1222, the lug is clamped in the sliding section 122; the starting point is a connection point between the abutment surface 1221 and the long groove. That is, when the protrusion slides along the abutting surface 1221 to abut against the stopper 1222, the protrusion is stopped by the stopper 1222 and cannot move forward, but the protrusion and the abutting surface 1221 are slightly deformed due to mutual pressing, so that the friction force generated therebetween can achieve the effect of clamping and embedding the protrusion in the sliding section 122, that is, the clamping and embedding between the first clamping member 12 and the second clamping member 22, and when the protrusion slides along the abutting surface 1221 to abut against the stopper 1222, the positioning groove 21 on the cup 2 will be aligned with the ball of the ball screw 11, and the ball of the ball screw 11 is clamped and embedded in the positioning groove 21 under the action of the spring, so as to achieve the positioning of the cup 2.

Further, in the direction from the starting point to the stopper 1222 in the sliding section 122, the distance between the abutting surface 1221 and the top surface of the card socket 1 gradually increases, and further, in the process that the bump slides along the abutting surface 1221, the mutual pressing force between the bump and the abutting surface 1221 is larger and larger, and the friction force between the bump and the abutting surface 1221 is larger and larger along with the larger, and further, the friction force between the bump and the abutting surface 1221 is larger at the position closer to the stopper 1222, so that when the bump slides to the stopper 1222, the friction force between the bump and the abutting surface 1221 is largest, and at this time, the clamping between the bump and the sliding section 122 is most stable.

An embodiment of the utility model also provides a centrifugal device, as shown in fig. 1 to fig. 6, centrifugal device includes that above-mentioned card is held structure, is connected the centrifugal cup 3 on cup 2 to and connect cassette 1 and drive the rotatory driving piece 4 of cassette 1. The driving part 4 can be a driving motor, the clamping seat 1 is provided with a mounting hole 14, an output shaft of the driving motor can be inserted into the mounting hole 14, and the end part of the output shaft of the driving motor can be fixed on the clamping seat 1 through a screw.

The utility model discloses an among the centrifugal equipment, before carrying out centrifugal motion to the material in the centrifugal cup 3, the second card that sets up on centrifugal cup 3 through the cup 2 at first is held a 22 joint and is held a 12 at first card to fix a position cup 2 through inlay card ripples ball screw 11 in constant head tank 21, also promptly, when the material in centrifugal cup 3 need carry out centrifugal motion in order to carry out material mixing or processing such as separation, at first hold a 22 joint with the second card and be in on the first card is held a 12, at this moment, the ball inlay card of ripples ball screw 11 fixes a position cup 2 in constant head tank 21, has realized having the fixed connection who stabilizes the location between cup 2 and the cassette 1. Afterwards, when the output shaft of the driving motor rotates, the output shaft of the motor rotates, at this time, because the cup holder 2 is fixedly connected with the holder 1, the output shaft of the driving motor can drive the whole holder 1 and the cup holder 2 (and the centrifugal cup 3 connected to the cup holder 2) installed on the holder 1 to rotate, and then the substance in the centrifugal cup 3 installed on the cup holder 2 can perform centrifugal motion, and further the uniform mixing or separation action of the substance in the centrifugal cup 3 is realized. The utility model has the advantages of simple structure, it is with low costs, the dismouting operation of cup 2 and cassette 1 is simple and easy, and need not to carry out the mass distribution, is applicable to and carries out centrifugal treatment to little sample.

The above embodiments are merely examples of the retaining structure of the present invention, and are not intended to limit the present invention, and any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A clamping structure is characterized by comprising a clamping seat and a cup seat detachably connected with the clamping seat; the top surface of the clamping seat is provided with a wave ball screw, and the clamping seat is provided with a first clamping piece; the bottom surface of the cup base is provided with a positioning groove, and the cup base comprises a second clamping piece matched with the first clamping piece; the ball screw is used for being clamped and embedded in the positioning groove to position the cup base after the second clamping piece is clamped and connected with the first clamping piece.

2. The retaining structure according to claim 1, wherein the top surface of the holder is provided with at least two mounting grooves at intervals for mounting the wave ball screw, and the positioning groove is provided on the bottom surface of the cup holder at a position opposite to each of the mounting grooves.

3. The retaining structure according to claim 1, wherein the retaining base is cylindrical, and the first retaining member is disposed on an outer side wall of the retaining base;

the cup holder comprises an annular plate which is convexly arranged on the bottom surface, and the central shaft of the annular plate is parallel to the axial direction of the clamping seat; the second clamping piece is arranged on the inner side wall of the annular plate; the annular plate and the bottom surface of the cup seat form a rotating space matched with the outer side wall of the clamping seat in a surrounding manner; the positioning groove is positioned in the rotating space.

4. The retaining structure of claim 3, wherein the first retaining member is a retaining groove concavely formed on an outer side wall of the cartridge; the second clamping piece is a protruding block protruding from the inner side wall of the annular plate.

5. The retaining structure of claim 4, wherein the catch slot includes an entry section and a sliding section in communication with the entry section; the lug enters the sliding section from the entering section and slides along the sliding section until the lug is clamped and embedded in the sliding section, and the second clamping piece is clamped and connected with the first clamping piece.

6. The retaining structure according to claim 5, wherein the entry section is an elongated slot extending parallel to the axial direction of the cartridge; the sliding section comprises an abutting surface which is arranged at a preset inclination angle with the inner side wall of the long groove; and after entering the sliding section from the entering section, the lug is jointed with the abutting surface and slides along the abutting surface.

7. The retaining structure of claim 6, wherein the sliding section further comprises a stop disposed on the abutment surface and spaced a predetermined distance from the starting point; when the lug slides along the abutting surface to abut against the stop block, the lug is clamped and embedded in the sliding section; the starting point is a connection point of the abutting surface and the long groove.

8. The catch structure according to claim 7, wherein a distance between the abutment surface and the cartridge top surface gradually increases in a direction from the starting point toward the stopper in the slip section.

9. The retaining structure according to claim 3, wherein at least two first retaining members are arranged on the outer side wall of the clamping seat at intervals; the inner side wall of the annular plate is provided with the second clamping parts corresponding to the positions of the first clamping parts one by one.

10. A centrifugal apparatus comprising the retaining structure of any one of claims 1 to 9, a centrifugal cup attached to a cup holder, and a drive member attached to the holder and configured to rotate the holder.

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