Centrifuge rotor
阅读说明:本技术 离心机转子 (Centrifuge rotor ) 是由 甘信元 李正生 李键辉 滕培坤 杨霆 于 2020-04-24 设计创作,主要内容包括:离心机转子包括:与第一锁定元件可拆卸地固定连接的手柄,第一锁定元件的末端形成有变径端部;套设在第一锁定元件外侧的连接组件;连接组件在第一位置和第二位置之间移动;连接组件上固定设置有沿转子安装方向竖直向下延伸的第一轴销和第二轴销;包括第一锁合元件和第二锁合元件的锁合组件;当连接组件处于第一位置时,第一锁合元件和第二锁合元件的远端自连接组件的外表面向外伸出;当连接组件处于第二位置时,变径端部伸入至第一锁合元件和第二锁合元件之间,第一锁合元件和第二锁合元件的尾端与变径端部外表面接触,第一锁合元件的远端和第二锁合元件的远端缩入至连接组件中。本发明所提供的离心机转子可以快速完成取放,无需用户额外操作。(The centrifuge rotor includes: the handle is detachably and fixedly connected with the first locking element, and the tail end of the first locking element is provided with a reducing end part; the connecting component is sleeved on the outer side of the first locking element; the connecting assembly moves between a first position and a second position; a first shaft pin and a second shaft pin which vertically extend downwards along the mounting direction of the rotor are fixedly arranged on the connecting assembly; a closure assembly comprising a first closure member and a second closure member; when the connecting assembly is in the first position, the distal ends of the first and second locking elements extend outwardly from the outer surface of the connecting assembly; when the connecting assembly is located at the second position, the reducing end extends into a position between the first locking element and the second locking element, the tail ends of the first locking element and the second locking element are in contact with the outer surface of the reducing end, and the far end of the first locking element and the far end of the second locking element are retracted into the connecting assembly. The centrifuge rotor provided by the invention can be quickly taken and placed without additional operation of a user.)
1. A centrifuge rotor, comprising:
the handle is detachably and fixedly connected with a first locking element, the first locking element vertically extends along the mounting direction of the rotor, a reducing end part is formed at the tail end of the first locking element, the reducing end part is provided with a first reducing end and a second reducing end, the first reducing end and the second reducing end are sequentially distributed along the mounting direction of the rotor, and the diameter of the first reducing end is smaller than that of the second reducing end;
the connecting component is sleeved on the outer side of the first locking element; the connection assembly moves between a first position and a second position relative to the first locking element; the connecting assembly is fixedly provided with a first shaft pin and a second shaft pin, and the first shaft pin and the second shaft pin vertically extend downwards along the mounting direction of the rotor; and
the locking assembly comprises a first locking element and a second locking element which are symmetrically arranged, wherein the first locking element rotates around the first axis pin, and the second locking element rotates around the second axis pin; when the connection assembly is in the first position, the distal ends of the first and second closure elements extend outwardly from the outer surface of the connection assembly; when the connecting assembly is located at the second position, the reducing end extends into a position between the first locking element and the second locking element, and the tail end of the first locking element and the tail end of the second locking element are in contact with the outer surface of the reducing end so as to rotate around the first shaft pin and the second shaft pin respectively until the far end of the first locking element and the far end of the second locking element are flush with the outer surface of the connecting assembly or retract into the connecting assembly.
2. The centrifuge rotor of claim 1 wherein,
the connecting assembly includes:
the connecting sleeve is sleeved outside the first locking element; when the connection assembly is in the first position, the upper surface of the connection sleeve is in contact with the handle, and when the connection assembly is in the second position, the upper surface of the connection sleeve is separated from the handle.
3. The centrifuge rotor of claim 2 wherein,
the first locking element comprises a first connecting part, the first spring is sleeved on the first connecting part, and the connecting sleeve is sleeved on the outer side of the first spring;
the first spring has first end and the second end that distributes in proper order along rotor installation direction, the connecting sleeve upper end forms the annular end plate of inside extension, the lower terminal surface of annular end plate with the first end contact of first spring.
4. The centrifuge rotor of claim 3 wherein,
the connection assembly further includes:
the rotor inner core is connected with the connecting sleeve; a first limiting clamping groove and a second limiting clamping groove are formed in the rotor inner core; when the connecting assembly is in the first position, the far end of the first locking element extends out of the first limiting clamping groove, and the far end of the second locking element extends out of the second limiting clamping groove.
5. The centrifuge rotor of claim 4 wherein,
the first locking element further comprises:
the rotor inner core is sleeved outside the second connecting part; and
an annular stopper portion formed between the first connection portion and the second connection portion; the annular limiting part extends outwards from the outer surface of the first locking element, and the upper end face of the annular limiting part is in contact with the second end of the first spring.
6. The centrifuge rotor of claim 5 wherein,
when the connecting assembly is located at the first position, the lower end face of the annular limiting part is in contact with the upper surface of the rotor inner core; when the connecting assembly is located at the second position, the lower end face of the annular limiting portion is separated from the upper surface of the rotor inner core.
7. The centrifuge rotor of claim 6 wherein,
a first connecting end plate extending outwards is formed at the lower end of the connecting sleeve, and a second connecting end plate extending outwards is formed on the outer end face of the rotor inner core;
the first connection end plate and the second connection end plate are bolted.
8. The centrifuge rotor of any of claims 5 to 7,
further comprising:
the first fixing block is fixedly arranged in the rotor inner core and is connected with the head end of the first locking element through a second spring;
the second fixing block is fixedly arranged in the rotor inner core and is connected with the head end of a second locking element through a third spring;
when the connecting assembly is located at the first position, the second spring and the third spring are located in an uncompressed state, the far end of the first locking element extends out of the first limiting clamping groove, and the far end of the second locking element extends out of the second limiting clamping groove.
9. The centrifuge rotor of claim 8 wherein,
the first locking element further comprises a third connecting part, and the third connecting part is positioned between the second connecting part and the diameter-variable end part; when the connecting assembly is in the second position, the third connecting portion is located between the first and second latch elements;
the outer diameters of the first connecting portion, the second connecting portion and the third connecting portion are decreased progressively in sequence.
10. The centrifuge rotor of claim 9 wherein,
the handle is connected with the first connecting part through a bolt.
Technical Field
The invention belongs to the technical field of centrifuges, and particularly relates to a centrifuge rotor.
Background
The centrifuge rotor is mounted on a centrifuge. Such centrifuges are used primarily in laboratories for research in the fields of medicine, pharmacy, biology, and chemistry to separate components of a sample using mass inertia. The rotor of the centrifuge needs to be rotated at high speed, the sample containers are arranged on the rotor in different ways, and the sample to be centrifuged is stored in the sample container and rotated. The rotor is driven to rotate by a motor.
The requirements of different experiments are met for processing different analysis samples. The rotor needs to be frequently disassembled. The rotor designed in the prior art can be connected with a motor rotating shaft through a specific clamping structure, and self-locking of the rotor is realized. This snap-in structure is mainly divided into two parts, namely a mounting sleeve formed on the rotor and two vertically extending connecting elements in the form of pins formed on the drive head and a coupling element provided on the drive head, as disclosed in chinese patent application (CN 102176975B): "if the rotor is to be connected to the drive head, the rotor is moved from top to bottom in the direction of the drive head. The sleeve mounted on the rotor touches the corresponding outer edge of the coupling element with its truncated cone, and the coupling element is pressed forward by a stop by means of a compression spring. By lowering the sleeve with its truncated cone onto the edges, the coupling element is deflected such that the respective outer edge overlaps the surface line of the drive head. The elongate portion of each coupling element is deflected in the direction of the axis of rotation against the spring force of the compression spring. If the rotor is to be removed from the sleeve, it is necessary to move an actuating element vertically downwards along the axis of rotation by means of a resiliently pretensioned pushbutton, the actuating element having a conical end which acts on a coupling tooth of the coupling element, the conical end exerting a force perpendicular to the axis of rotation, so that the coupling element can be deflected until the outer edge again overlaps the busbar or even continues to move inwards into the drive head, at which point the rotor can be pulled upwards again and removed from the drive head. Although this structure can achieve the connection between the rotor and the motor and achieve self-locking, there are two problems, firstly, the unlocking must rely on the key connected with the operation element, that is, the user must perform manual operation when removing the rotor; secondly, connecting element and coupling element all set up on the drive head, because coupling element all confirms its operating position through the pressure spring, change the back many times, take place to warp easily, must be maintained by operating personnel and change. If the centrifuge is in the process of a continuous experiment, the centrifuge must be temporarily replaced to ensure that the experiment continues.
The above information disclosed in this background section is only for enhancement of understanding of the background of the application and therefore it may comprise prior art that does not constitute known to a person of ordinary skill in the art.
Disclosure of Invention
The invention aims at the problem that in the prior art, the unlocking of a rotor must depend on a key connected with an operating element, and designs and provides a centrifuge rotor capable of realizing quick replacement.
In order to realize the purpose of the invention, the invention is realized by adopting the following technical scheme:
a centrifuge rotor comprising: the handle is detachably and fixedly connected with a first locking element, the first locking element vertically extends along the mounting direction of the rotor, a reducing end part is formed at the tail end of the first locking element, the reducing end part is provided with a first reducing end and a second reducing end, the first reducing end and the second reducing end are sequentially distributed along the mounting direction of the rotor, and the diameter of the first reducing end is smaller than that of the second reducing end; the connecting component is sleeved on the outer side of the first locking element; the connection assembly moves between a first position and a second position relative to the first locking element; the connecting assembly is fixedly provided with a first shaft pin and a second shaft pin, and the first shaft pin and the second shaft pin vertically extend downwards along the mounting direction of the rotor; the locking assembly comprises a first locking element and a second locking element which are symmetrically arranged, wherein the first locking element rotates around the first axis pin, and the second locking element rotates around the second axis pin; when the connection assembly is in the first position, the distal ends of the first and second closure elements extend outwardly from the outer surface of the connection assembly; when the connecting assembly is located at the second position, the reducing end extends into a position between the first locking element and the second locking element, and the tail end of the first locking element and the tail end of the second locking element are in contact with the outer surface of the reducing end so as to rotate around the first shaft pin and the second shaft pin respectively until the far end of the first locking element and the far end of the second locking element are flush with the outer surface of the connecting assembly or retract into the connecting assembly.
Further, the connection assembly includes: the connecting sleeve is sleeved outside the first locking element; when the connection assembly is in the first position, the upper surface of the connection sleeve is in contact with the handle, and when the connection assembly is in the second position, the upper surface of the connection sleeve is separated from the handle.
Further, the first locking element comprises a first connecting part, the first spring is sleeved on the first connecting part, and the connecting sleeve is sleeved outside the first spring; the first spring has first end and the second end that distributes in proper order along rotor installation direction, the connecting sleeve upper end forms the annular end plate of inside extension, the lower terminal surface of annular end plate with the first end contact of first spring.
Further, the connection assembly further includes: the rotor inner core is connected with the connecting sleeve; a first limiting clamping groove and a second limiting clamping groove are formed in the rotor inner core; when the connecting assembly is in the first position, the far end of the first locking element extends out of the first limiting clamping groove, and the far end of the second locking element extends out of the second limiting clamping groove.
Further, the first locking element further comprises: the rotor inner core is sleeved outside the second connecting part; and an annular stopper portion formed between the first connection portion and the second connection portion; the annular limiting part extends outwards from the outer surface of the first locking element, and the upper end face of the annular limiting part is in contact with the second end of the first spring.
Further, when the connecting assembly is located at the first position, the lower end surface of the annular limiting part is in contact with the upper surface of the rotor inner core; when the connecting assembly is located at the second position, the lower end face of the annular limiting portion is separated from the upper surface of the rotor inner core.
Further, a first connecting end plate extending outwards is formed at the lower end of the connecting sleeve, and a second connecting end plate extending outwards is formed on the outer end face of the rotor inner core; the first connection end plate and the second connection end plate are bolted.
Further, the method also comprises the following steps: the first fixing block is fixedly arranged in the rotor inner core and is connected with the head end of the first locking element through a second spring; the second fixing block is fixedly arranged in the rotor inner core and is connected with the head end of a second locking element through a third spring; when the connecting assembly is located at the first position, the second spring and the third spring are located in an uncompressed state, the far end of the first locking element extends out of the first limiting clamping groove, and the far end of the second locking element extends out of the second limiting clamping groove.
Further, the first locking element further comprises a third connecting part, and the third connecting part is positioned between the second connecting part and the diameter-variable end part; when the connecting assembly is in the second position, the third connecting portion is located between the first and second latch elements; the outer diameters of the first connecting portion, the second connecting portion and the third connecting portion are decreased progressively in sequence.
Further, the handle is connected with the first connecting portion through bolts.
Compared with the prior art, the invention has the advantages and positive effects that:
according to the centrifuge rotor provided by the invention, in the process of mounting and dismounting, a user only needs to lift the handle, the reducing end part formed at the tail end of the first locking element can be withdrawn or extended between the first locking element and the second locking element through the relative movement of the connecting assembly and the first locking element, the first locking element and the second locking element are driven to extend out of the outer surface of the connecting assembly or retract into the connecting assembly, and therefore the rotor can be mounted in the corresponding mounting position of a driving head or a motor and can be locked. The user does not need to perform additional operations in the whole process. Meanwhile, the centrifuge rotor is integrated into an independent component, so that the adaptability is better.
Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural view of one embodiment of a disclosed centrifuge rotor wherein the attachment assembly is in a first position relative to the first locking element;
FIG. 2 is a schematic structural view of the centrifuge rotor shown in FIG. 1 with the connection assembly in a second position relative to the first locking element;
FIG. 3 is a cross-sectional view of the centrifuge rotor shown in FIG. 1 in an installed condition;
FIG. 4 is a top view of the rotor core of FIG. 1;
fig. 5 is a schematic structural view of the first locking element of fig. 1.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and examples.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The invention relates to an improved centrifuge rotor, which can realize rapid installation and disassembly and completely does not need manual operation by users in the installation and disassembly process. The internal structure of the centrifuge rotor will be described in detail below with reference to the accompanying drawings. As shown in fig. 1 to 3, the
The
The mounting and dismounting process of the
When the rotor is to be removed, the user merely has to lift the grip handle 10 and the
The
The structure of the
The rotor
An
A specially designed first locking
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.