CN213859332U - Sample analyzer, clamping jaw assembly, clamping jaw and clamping arm - Google Patents
Sample analyzer, clamping jaw assembly, clamping jaw and clamping arm Download PDFInfo
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- CN213859332U CN213859332U CN202021572785.7U CN202021572785U CN213859332U CN 213859332 U CN213859332 U CN 213859332U CN 202021572785 U CN202021572785 U CN 202021572785U CN 213859332 U CN213859332 U CN 213859332U
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Abstract
The utility model provides a sample analyzer, clamping jaw subassembly, clamping jaw, arm lock, wherein the clamping jaw includes two arm lock, bearing, spacer ring, the fixed axle that cross-over set up, each arm lock all includes clamping part, drum portion and the pressure receiving part that connects gradually, and the inner periphery of drum portion is equipped with the protruding ring muscle, and the protruding ring muscle is used for separating the drum portion into two left and right bearing installation areas; the bearings are arranged in the left bearing mounting area and the right bearing mounting area; the spacing ring is arranged between the two clamping arms which are arranged in a crossed manner and is used for abutting against the inner ring of the bearing; the fixed shaft penetrates through the bearing and the spacing ring to pivotally connect and fix the two clamping arms which are arranged in a crossed manner; the convex ring rib is positioned and clamped by the bearings on two sides of the convex ring rib so as to limit the axial movement of the clamping arm relative to the fixed shaft. The utility model discloses in, when the arm lock was assembled through the fixed axle, bearing and spacer ring all were compressed tightly by the axial, and the bulge loop muscle receives the bearing location centre gripping of bulge loop muscle both sides and then can restrict the relative fixed axle axial displacement of arm lock, guarantees the stability of arm lock.
Description
Technical Field
The utility model relates to the technical field of medical equipment, in particular to sample analyzer, clamping jaw device, clamping jaw subassembly, clamping jaw, arm lock.
Background
The sample analyzer is widely used in hospitals at all levels, medical inspection laboratories and regional detection centers due to its high measurement speed, high accuracy and small reagent consumption.
Most including the clamping jaw device who is used for pressing from both sides the test tube of current sample analysis appearance, however current clamping jaw device mostly has the subassembly more, the structure is complicated, the unstable problem of centre gripping.
SUMMERY OF THE UTILITY MODEL
The utility model provides a sample analyzer, clamping jaw subassembly, clamping jaw, arm lock to clamping jaw device centre gripping unstable technical problem among the solution prior art.
In order to solve the technical problem, the utility model discloses a technical scheme be: the clamping arm comprises a clamping part, a cylindrical part and a pressure receiving part which are connected in sequence, wherein a convex ring rib is arranged on the inner periphery of the cylindrical part and is used for separating the cylindrical part into a left bearing installation area and a right bearing installation area.
According to the utility model relates to a specific embodiment, the clamping part is the arc slice for match the open end of centre gripping test tube.
According to the utility model discloses a specific embodiment, the end that receives the portion is equipped with the gyro wheel.
According to the utility model relates to a specific embodiment, the portion of receiving still is equipped with the spring post, the spring post is used for cup jointing reset spring.
For solving the technical problem, the utility model discloses a another technical scheme is: there is provided a sample analyser comprising a jaw of the kind described above, the jaw comprising:
the clamping arms are arranged in a crossed manner, each clamping arm comprises a clamping part, a cylindrical part and a pressure receiving part which are sequentially connected, a convex ring rib is arranged on the inner periphery of the cylindrical part, and the convex ring rib is used for dividing the cylindrical part into a left bearing installation area and a right bearing installation area;
the bearings are arranged in the left bearing mounting area and the right bearing mounting area;
the spacing ring is arranged between the two clamping arms which are arranged in a crossed mode and used for abutting against the inner ring of the bearing;
the fixing shaft penetrates through the bearing and the spacing ring to pivotally connect and fix the two clamping arms which are arranged in a crossed manner;
the convex ring rib is positioned and clamped by the bearings on two sides of the convex ring rib so as to limit the clamping arm to axially move relative to the fixed shaft.
According to the utility model relates to a specific embodiment, the clamping part is the arc slice for match the open end of centre gripping test tube.
According to the utility model discloses a specific embodiment, the end that receives the portion is equipped with the gyro wheel.
According to the utility model discloses a specific embodiment, the portion of receiving still is equipped with the spring post, the clamping jaw still includes reset spring, the spring post is used for cup jointing reset spring.
For solving the technical problem, the utility model discloses a another technical scheme is: providing a jaw assembly, the jaw assembly comprising:
a base;
the clamping jaw motor is fixedly installed through the base;
the transmission block is connected with the output end of the clamping jaw motor and is driven by the clamping jaw motor to carry out axial propulsion or retraction;
the fixing plate is fixedly connected with the base;
the clamping jaw is fixedly connected with the base through the fixing plate and is in butt fit with the transmission block through the pressed part, and the clamping jaw is correspondingly opened or clamped when the transmission block is axially pushed or retracted.
For solving the technical problem, the utility model discloses a another technical scheme is: a sample analyzer is provided that includes the aforementioned jaw assembly.
The utility model has the advantages that: be different from the condition of prior art, the utility model discloses in, when the arm lock was assembled through the fixed axle, bearing and spacer ring all were compressed tightly by the axial, and the bulge loop muscle receives the bearing location centre gripping of bulge loop muscle both sides and then can restrict the relative fixed axle axial displacement of arm lock, guarantees the stability of arm lock.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
fig. 1 is a schematic perspective view of a clamp arm provided in an embodiment of the present invention.
Fig. 2 is a schematic perspective view of a clamping jaw provided in an embodiment of the present invention.
Figure 3 is a cross-sectional structural schematic view of the jaw shown in figure 2.
Figure 4 is a perspective view of a partial assembly of the jaws shown in figure 2.
Fig. 5 is an exploded schematic view of a jaw assembly according to an embodiment of the present invention.
Fig. 6 is an exploded view of a view angle of the clamping jaw device according to an embodiment of the present invention.
Fig. 7 is an exploded view of the clamping jaw device according to another view angle provided by the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1 to 5, an embodiment of the present invention provides a clamping arm 210, wherein the clamping arm 210 may be an integrally formed structural member, and may be integrally formed by metal or plastic material. The clamp arm 210 includes a clamping portion 211, a cylindrical portion 212, and a pressure receiving portion 213 connected in sequence, a protruding ring rib 214 is provided on an inner circumference of the cylindrical portion 212, the protruding ring rib 214 is used to divide the cylindrical portion 212 into two left and right bearing mounting areas, and the two left and right bearing mounting areas are used to provide a bearing 220.
The clamping portion 211 may be an arc-shaped sheet for matching and clamping the open end of the cylindrical test tube 100. The end of the pressed part 213 may be provided with a U-shaped groove, and a roller 215 is disposed in the U-shaped groove through a shaft rod, and the roller 215 may be used to slidingly engage with the inclined surface of the inclined block 162 to reduce friction. The pressed part 213 is further provided with a spring post 216, the spring post 216 is used for sleeving a return spring 217, and the return spring 217 is a thrust spring and is used for providing an external thrust so that the clamping part 211 can elastically clamp the test tube 100.
In the clamping arm 210 provided by this embodiment, the cylindrical portion 212 is provided with the convex ring rib 214, the convex ring rib 214 divides the cylindrical portion 212 into two left and right bearing installation areas, and when the clamping arm 210 is assembled by the fixing shaft 240, the convex ring rib 214 is positioned and clamped by the bearings 220 on two sides of the convex ring rib 214, so that the clamping arm 210 can be limited from moving axially relative to the fixing shaft 240, and the stability of the clamping arm 210 is ensured.
Referring to fig. 1 to 5, the present invention further provides a clamping jaw 200, wherein the clamping jaw 200 includes two clamping arms 210, a return spring 217, a bearing 220, a spacer ring 230, and a fixing shaft 240, which are arranged in a crossing manner.
Each clamp arm 210 comprises a clamping portion 211, a cylindrical portion 212 and a pressure receiving portion 213 which are connected in sequence, a convex ring rib 214 is arranged on the inner periphery of the cylindrical portion 212, and the convex ring rib 214 is used for dividing the cylindrical portion 212 into a left bearing installation area and a right bearing installation area. The clamping arm 210 may be an integrally formed structural member, and may be integrally formed by metal or plastic material. The clamping portion 211 may be an arc-shaped sheet for matching and clamping the open end of the cylindrical test tube 100. The end of the pressed part 213 may be provided with a U-shaped groove, and a roller 215 is disposed in the U-shaped groove through a shaft rod, and the roller 215 may be used to slidingly engage with the inclined surface of the inclined block 162 to reduce friction. The pressed part 213 is further provided with a spring post 216, the spring post 216 is used for sleeving a return spring 217, and the return spring 217 is a thrust spring and is used for providing an external thrust so that the clamping part 211 can elastically clamp the test tube 100.
The bearings 220 are disposed in the left and right bearing mounting regions, and the number of the bearings 220 may be 4 in total, that is, 1 is disposed in each of the left and right bearing mounting regions of each clamp arm 210.
As shown in fig. 3 and 4, a spacer ring 230 is disposed between the two clamping arms 210 disposed crosswise for abutting between inner rings of the bearings 220, when the number of the bearings 220 is 4, the spacer ring 230 is located between the 2 nd and 3 rd bearings 220, and the spacer ring 230 may be specifically a spring washer, a flat washer, or a combination thereof, wherein the spring washer may provide an elastic pushing force to the bearings 220 on both sides, and the flat washer may increase a contact area.
The fixing shaft 240 passes through the bearing 220 and the spacer ring 230 to pivotally fix the two clamping arms 210 arranged in a crossing manner. The fixing shaft 240 may be a screw, the fixing shaft 240 may axially press the 4 bearings 220 and the spacing ring 230, and the protruding ring rib 214 is positioned and clamped by the bearings 220 at two sides of the protruding ring rib 214 to further limit the axial movement of the clamping arm 210 relative to the fixing shaft 240.
The clamping jaw 200 provided by this embodiment is provided with the convex ring rib 214 in the cylindrical portion 212 of the clamping arm 210, the convex ring rib 214 divides the cylindrical portion 212 into two left and right bearing installation areas, when the clamping arm 210 is assembled by the fixing shaft 240, the bearing 220 and the spacing ring 230 are both axially pressed, the convex ring rib 214 is positioned and clamped by the bearings 220 on both sides of the convex ring rib 214, and then the axial movement of the clamping arm 210 relative to the fixing shaft 240 can be limited, so that the stability of the clamping arm 210 is ensured.
Referring to fig. 1 to 5, the embodiment of the present invention further provides a clamping jaw assembly, which includes a base 140, a clamping jaw motor 150, a transmission block 160, a fixing plate 170 and the clamping jaw 200.
Wherein the jaw motor 150 is fixedly mounted through the base 140; the transmission block 160 is connected with the output end of the clamping jaw motor 150, the transmission block 160 and the clamping jaw motor 150 can be respectively arranged at the upper side and the lower side of the base 140, and the transmission block 160 is driven by the clamping jaw motor 150 to axially advance or retract; the fixing plate 170 is fixedly connected to the base 140 and can be vertically disposed with respect to the base 140; the clamping jaw 200 is fixedly connected with the base 140 through the fixing plate 170 and is in abutting fit with the driving block 160 through the compression part 213, and the clamping jaw 200 is correspondingly opened or clamped when the driving block 160 is axially pushed or retracted.
Referring to fig. 1 to 5, the embodiment of the present invention further provides a clamping jaw assembly, which includes a base 140, a clamping jaw motor 150, a transmission block 160, a fixing plate 170, and a clamping jaw 200.
The clamping jaw 200 comprises two clamping arms 210, a return spring 217, a bearing 220, a spacing ring 230 and a fixed shaft 240 which are arranged in a crossed manner. Each clamp arm 210 comprises a clamping portion 211, a cylindrical portion 212 and a pressure receiving portion 213 which are connected in sequence, a convex ring rib 214 is arranged on the inner periphery of the cylindrical portion 212, and the convex ring rib 214 is used for dividing the cylindrical portion 212 into a left bearing installation area and a right bearing installation area. The clamping arm 210 may be an integrally formed structural member, and may be integrally formed by metal or plastic material. The clamping portion 211 may be an arc-shaped sheet for matching and clamping the open end of the cylindrical test tube 100. The end of the pressed part 213 may be provided with a U-shaped groove, and a roller 215 is disposed in the U-shaped groove through a shaft rod, and the roller 215 may be used to slidingly engage with the inclined surface of the inclined block 162 to reduce friction. The pressed part 213 is further provided with a spring post 216, the spring post 216 is used for sleeving a return spring 217, and the return spring 217 is a thrust spring and is used for providing an external thrust so that the clamping part 211 can elastically clamp the test tube 100. The bearings 220 are disposed in the left and right bearing mounting regions, and the number of the bearings 220 may be 4 in total, that is, 1 is disposed in each of the left and right bearing mounting regions of each clamp arm 210. The spacer ring 230 is disposed between the two clip arms 210 disposed to intersect for abutting between inner rings of the bearings 220, and when the number of the bearings 220 is 4, the spacer ring 230 is located between the 2 nd and 3 rd bearings 220. The fixing shaft 240 passes through the bearing 220 and the spacer ring 230 to pivotally fix the two clamping arms 210 arranged in a crossing manner. The fixing shaft 240 may be a screw, the fixing shaft 240 may axially press the 4 bearings 220 and the spacing ring 230, and the protruding ring rib 214 is positioned and clamped by the bearings 220 at two sides of the protruding ring rib 214 to further limit the axial movement of the clamping arm 210 relative to the fixing shaft 240.
The driving block 160 is engaged with the tail end of the clamping arm 210, i.e. engaged with the roller 215, the driving block 160 may include a connecting block 161 and inclined blocks 162 vertically extending from two sides of the connecting block 161, and the inclined blocks 162 are engaged with the roller 215 in a sliding manner.
The jaw motor 150 is used for driving the driving block 160 to axially advance or retract so as to open or clamp the jaws 200, the jaw motor 150 comprises a motor body 151 and a motor spline shaft 152, the motor spline shaft 152 is connected with the driving block 160, and the motor spline shaft 152 is linked with the driving block 160 to axially advance or retract when the motor body 151 is driven. It should be noted that the motor spline shaft 152 only performs axial telescopic motion, and does not perform radial rotational motion. The prior art adopts the screw rod transmission mode, utilizes the threaded spindle of motor to rotate and forces the epaxial nut axial displacement of threaded spindle and then produce the axial thrust promptly, and this structure need set many guide bars in the periphery of threaded spindle, and the clearance of threaded spindle and nut increases more and more greatly along with length of time of using, and transmission stability is relatively poor, gets test tube 100 time easy break down of pressing from both sides.
The jaw motor 150 is fixedly installed through the base 140, and the driving block 160 and the jaw motor 150 may be respectively disposed at opposite upper and lower sides of the base 140.
One end of the fixing plate 170 is fixedly connected to the base 140 and can be vertically disposed with respect to the base 140, the other end of the fixing plate 170 is fixedly connected to the clamping jaw 200, and specifically, the fixing shaft 240 passes through the bearing 220 and the spacing ring 230 and then is spirally tightly fitted to the other end of the fixing plate 170.
The driving block 160 may include a connecting block 161 and a slant block 162 vertically extending from both sides of the connecting block 161, and the slant block 162 is slidably engaged with the roller 215.
In the clamping jaw assembly that this embodiment provided, because clamping jaw motor 150 includes motor body 151 and motor spline shaft 152, motor spline shaft 152 is connected with drive block 160, and motor spline shaft 152 links drive block 160 and carries out axial propulsion or withdrawal when motor body 151 drives, can improve drive stability, simplifies the constitutional assembly, has avoided adopting the lead screw transmission mode can cause the technical problem that the clearance is big, the transmission is unstable, the subassembly is more.
An embodiment of the utility model provides a still provide a sample analyzer, this sample analyzer includes aforementioned clamping jaw assembly.
Referring to fig. 1 to 7, the embodiment of the present invention further provides a clamping jaw device, which includes a frame 110, a stacking tooth 111, a lifting motor 112, a driven wheel 113, a transmission belt 114, a transmission member 115, a slide rail 120, a slider 130, a base 140, an adapting bracket 141, and a clamping jaw assembly.
The rack 110 may have a groove-shaped plate shape or an L-shaped plate shape, the rack 110 may be vertically disposed, the rack 110 is provided with a code tooth 111, the code tooth 111 has a plurality of optical recognition portions 119, and the code tooth 111 may be vertically disposed.
The clamping jaw assembly is arranged in a sliding mode relative to the rack 110 and comprises a clamping jaw 200 and an optical coupler 201, the clamping jaw 200 is used for grabbing and placing the test tube 100, and when the clamping jaw assembly slides linearly relative to the rack 110, the clamping jaw assembly moves to the optical recognition portion 119 through the optical coupler 201 to sense the position state of the clamping jaw assembly.
Specifically, the optical recognition portion 119 may be a plurality of light blocking bumps, and a preset distance is provided between the plurality of light blocking bumps; or the optical recognition part 119 may be a plurality of light through hole grooves having a predetermined distance therebetween. The optical coupler 201 is provided with a transmitting end and a receiving end, when the optical recognition portion 119 is a plurality of light blocking projections, the receiving end of the optical coupler 201 can receive a signal sent by the transmitting end when the optical coupler 201 moves to a region of a non-light blocking projection, and the receiving end of the optical coupler 201 cannot receive the signal sent by the transmitting end when the optical coupler moves to the region of the light blocking projection, so that a specific position can be sensed. When optical identification portion 119 was a plurality of clear aperture groove, the principle is similar, can not receive the signal that the transmitting terminal sent when opto-coupler 201 moved to non-clear aperture groove region promptly, thereby can receive the signal that the transmitting terminal sent when opto-coupler 201 moved to clear aperture groove region and can perceive a specific position.
The code teeth 111 can be independent plates and are fixedly arranged on the frame 110 through screws, bonding or welding; or the code teeth 111 are integrally extending flaps on the frame 110.
The clamping jaw assembly and the frame 110 form a sliding assembly through a sliding rail 120 and a sliding block 130, wherein the sliding rail 120 is fixed on the frame 110, and the clamping jaw assembly is fixed on the sliding block 130.
The lifting motor 112 is fixedly installed with the frame 110; a driven wheel 113 is mounted on the frame 110 and located at a side far from the lifting motor 112; the transmission belt 114 is sleeved between the lifting motor 112 and the driven wheel 113; a drive 115 is secured to the belt 114 for driving the jaw assembly to raise and lower the jaw assembly relative to the frame 110. The code teeth 111 may be disposed parallel to the sides of the belt 114.
The base 140 is secured to the slide 130 and the jaw assembly is secured to the slide 130 by the base 140.
The adapter bracket 141 is fixed on the base 140, and the optical coupler 201 is fixedly installed through the adapter bracket 141.
Referring to fig. 6 to 7, an embodiment of the present invention further provides a code tooth 111, where the code tooth 111 is used for fixing and setting to match with an optical coupler 201 that linearly moves synchronously with the clamping jaw assembly for position detection, the code tooth 111 has a plurality of optical identification portions 119, each optical identification portion 119 is a plurality of light blocking protrusions, and a preset distance is provided between the plurality of light blocking protrusions; alternatively, the optical recognition unit 119 may be a plurality of light-passing grooves, and the light-passing grooves may have a predetermined distance therebetween.
Through the fixed setting of sign indicating number tooth 111 that will have a plurality of optical identification portion 119, can perceive a plurality of specific positions when sign indicating number tooth 111 moves with the synchronous rectilinear motion's of clamping jaw subassembly opto-coupler 201 relatively, can reduce the quantity of opto-coupler from this when satisfying the position detection.
Referring to fig. 1 to 5, an embodiment of the present invention further provides a clamping jaw apparatus, which includes a frame 110, a stacking tooth 111, a lifting motor 112, a driven wheel 113, a transmission belt 114, a transmission member 115, a slide rail 120, a slider 130, a base 140, a clamping jaw motor 150, a transmission block 160, a fixing plate 170, a clamping jaw 200, and an optical coupler 201.
The rack 110 may have a groove-shaped plate shape or an L-shaped plate shape, the rack 110 may be vertically disposed, the rack 110 is provided with a code tooth 111, the code tooth 111 has a plurality of optical recognition portions 119, and the code tooth 111 may be vertically disposed.
The base 140 is slidably disposed relative to the frame 110, wherein the slide rail 120 can be vertically fixed on the frame 110, the slider 130 is slidably engaged with the slide rail 120, the base 140 is fixed on the slider 130, and the clamping jaw assembly is fixed on the slider 130 through the base 140.
The jaw motor 150 is fixedly mounted through the base 140.
The driving block 160 is connected to an output end of the jaw motor 150, and is driven by the jaw motor 150 to axially advance or retract, and the driving block 160 and the jaw motor 150 may be respectively disposed at upper and lower sides of the base 140.
The clamping jaw 200 is fixedly connected with the base 140 through the fixing plate 170 and is abutted and matched with the transmission block 160; one end of the fixing plate 170 is vertically connected to the base 140, and the other end of the fixing plate 170 is connected to the fixing shaft 240.
The jaw motor 150 includes a motor body 151 and a motor spline shaft 152, the motor spline shaft 152 is connected to the driving block 160, and the motor spline shaft 152 is driven by the motor body 151 to move the driving block 160 in an axial direction. It should be noted that the motor spline shaft 152 only performs axial telescopic motion, and does not perform radial rotational motion. The prior art adopts the screw rod transmission mode, utilizes the threaded spindle of motor to rotate and forces the epaxial nut axial displacement of threaded spindle and then produce the axial thrust promptly, and this structure need set many guide bars in the periphery of threaded spindle, and the clearance of threaded spindle and nut increases more and more greatly along with length of time of using, and transmission stability is relatively poor, gets test tube 100 time easy break down of pressing from both sides.
The lifting motor 112 is fixedly installed with the frame 110; a driven wheel 113 is mounted on the frame 110 and located at a side far from the lifting motor 112; the transmission belt 114 is sleeved between the lifting motor 112 and the driven wheel 113; a drive 115 is secured to the belt 114 for driving the jaw assembly to raise and lower the jaw assembly relative to the frame 110. The code teeth 111 may be disposed parallel to the sides of the belt 114.
The optical coupler 201 is fixedly arranged relative to the base 140, and when the base 140 slides relative to the rack 110, the optical coupler 201 moves to the optical recognition part 119 to sense the position state of the clamping jaw assembly.
Specifically, the optical recognition portion 119 may be a plurality of light blocking bumps, and a preset distance is provided between the plurality of light blocking bumps; or the optical recognition part 119 may be a plurality of light through hole grooves having a predetermined distance therebetween. The optical coupler 201 is provided with a transmitting end and a receiving end, when the optical recognition portion 119 is a plurality of light blocking projections, the receiving end of the optical coupler 201 can receive a signal sent by the transmitting end when the optical coupler 201 moves to a region of a non-light blocking projection, and the receiving end of the optical coupler 201 cannot receive the signal sent by the transmitting end when the optical coupler moves to the region of the light blocking projection, so that a specific position can be sensed. When optical identification portion 119 can be a plurality of clear hole grooves, the principle is similar, can not receive the signal that the transmitting terminal sent when opto-coupler 201 moves to non-clear hole groove region promptly, thereby can receive the signal that the transmitting terminal sent when opto-coupler 201 moves to clear hole groove region and can perceive a specific position.
The code teeth 111 can be independent plates and are fixedly arranged on the frame 110 through screws, bonding or welding; or the code teeth 111 are integrally extending flaps on the frame 110. Through the fixed setting of sign indicating number tooth 111 that will have a plurality of optical identification portion 119, can perceive a plurality of specific positions when sign indicating number tooth 111 moves with the synchronous rectilinear motion's of clamping jaw subassembly opto-coupler 201 relatively, can reduce the quantity of opto-coupler from this when satisfying the position detection.
The clamping jaw 200 comprises two clamping arms 210, a return spring 217, a bearing 220, a spacing ring 230 and a fixed shaft 240 which are arranged in a crossed manner. Each clamp arm 210 comprises a clamping portion 211, a cylindrical portion 212 and a pressure receiving portion 213 which are connected in sequence, a convex ring rib 214 is arranged on the inner periphery of the cylindrical portion 212, and the convex ring rib 214 is used for dividing the cylindrical portion 212 into a left bearing installation area and a right bearing installation area. The clamping arm 210 may be an integrally formed structural member, and may be integrally formed by metal or plastic material. The clamping portion 211 may be an arc-shaped sheet for matching and clamping the open end of the cylindrical test tube 100. The end of the pressed part 213 may be provided with a U-shaped groove, and a roller 215 is disposed in the U-shaped groove through a shaft rod, and the roller 215 may be used to slidingly engage with the inclined surface of the inclined block 162 to reduce friction. The pressed part 213 is further provided with a spring post 216, the spring post 216 is used for sleeving a return spring 217, and the return spring 217 is a thrust spring and is used for providing an external thrust so that the clamping part 211 can elastically clamp the test tube 100. The bearings 220 are disposed in the left and right bearing mounting regions, and the number of the bearings 220 may be 4 in total, that is, 1 is disposed in each of the left and right bearing mounting regions of each clamp arm 210. The spacer ring 230 is disposed between the two clip arms 210 disposed to intersect for abutting between inner rings of the bearings 220, and when the number of the bearings 220 is 4, the spacer ring 230 is located between the 2 nd and 3 rd bearings 220. The fixing shaft 240 passes through the bearing 220 and the spacer ring 230 to pivotally fix the two clamping arms 210 arranged in a crossing manner. The fixing shaft 240 may be a screw, the fixing shaft 240 may axially press the 4 bearings 220 and the spacing ring 230, and the protruding ring rib 214 is positioned and clamped by the bearings 220 at two sides of the protruding ring rib 214 to further limit the axial movement of the clamping arm 210 relative to the fixing shaft 240.
The driving block 160 is engaged with the tail end of the clamping arm 210, i.e. engaged with the roller 215, the driving block 160 may include a connecting block 161 and inclined blocks 162 vertically extending from two sides of the connecting block 161, and the inclined blocks 162 are engaged with the roller 215 in a sliding manner.
The jaw motor 150 is used for driving the driving block 160 to axially advance or retract so as to open or clamp the jaws 200, the jaw motor 150 comprises a motor body 151 and a motor spline shaft 152, the motor spline shaft 152 is connected with the driving block 160, and the motor spline shaft 152 is linked with the driving block 160 to axially advance or retract when the motor body 151 is driven. It should be noted that the motor spline shaft 152 only performs axial telescopic motion, and does not perform radial rotational motion. The prior art adopts the screw rod transmission mode, utilizes the threaded spindle of motor to rotate and forces the epaxial nut axial displacement of threaded spindle and then produce the axial thrust promptly, and this structure need set many guide bars in the periphery of threaded spindle, and the clearance of threaded spindle and nut increases more and more greatly along with length of time of using, and transmission stability is relatively poor, gets test tube 100 time easy break down of pressing from both sides.
The jaw motor 150 is fixedly mounted through the base 140, and the driving block 160 and the jaw motor 150 may be respectively disposed at opposite upper flat sides of the base 140.
One end of the fixing plate 170 is fixedly connected to the base 140 and can be vertically disposed with respect to the base 140, the other end of the fixing plate 170 is fixedly connected to the clamping jaw 200, and specifically, the fixing shaft 240 passes through the bearing 220 and the spacing ring 230 and then is spirally tightly fitted to the other end of the fixing plate 170.
The driving block 160 may include a connecting block 161 and a slant block 162 vertically extending from both sides of the connecting block 161, and the slant block 162 is slidably engaged with the roller 215.
The embodiment of the utility model provides a still a sample analyzer, this sample analyzer include aforementioned clamping jaw device.
The above is only the embodiment of the present invention, not the limitation of the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. The clamping arm is characterized by comprising a clamping part, a cylindrical part and a pressure receiving part which are sequentially connected, wherein a convex ring rib is arranged on the inner periphery of the cylindrical part and is used for separating the cylindrical part into a left bearing installation area and a right bearing installation area.
2. The clamp arm of claim 1, characterized in that: the clamping part is arc-shaped and flaky and is used for matching the opening end of the clamping test tube.
3. The clamp arm of claim 1, characterized in that: the tail end of the pressed part is provided with a roller.
4. The clamp arm of claim 1, characterized in that: the compression part is further provided with a spring column, and the spring column is used for sleeving a return spring.
5. A jaw, characterized in that the jaw comprises:
the clamping arms are arranged in a crossed manner, each clamping arm comprises a clamping part, a cylindrical part and a pressure receiving part which are sequentially connected, a convex ring rib is arranged on the inner periphery of the cylindrical part, and the convex ring rib is used for dividing the cylindrical part into a left bearing installation area and a right bearing installation area;
the bearings are arranged in the left bearing mounting area and the right bearing mounting area;
the spacing ring is arranged between the two clamping arms which are arranged in a crossed mode and used for abutting against the inner ring of the bearing;
the fixing shaft penetrates through the bearing and the spacing ring to pivotally connect and fix the two clamping arms which are arranged in a crossed manner;
the convex ring rib is positioned and clamped by the bearings on two sides of the convex ring rib so as to limit the clamping arm to axially move relative to the fixed shaft.
6. A jaw according to claim 5, characterized in that: the clamping part is arc-shaped and flaky and is used for matching the opening end of the clamping test tube.
7. A jaw according to claim 5, characterized in that: the tail end of the pressed part is provided with a roller.
8. A jaw according to claim 5, characterized in that: the compression part is further provided with a spring column, the clamping jaw further comprises a reset spring, and the spring column is used for being sleeved with the reset spring.
9. A jaw assembly, characterized in that the jaw assembly comprises:
a base;
the clamping jaw motor is fixedly installed through the base;
the transmission block is connected with the output end of the clamping jaw motor and is driven by the clamping jaw motor to carry out axial propulsion or retraction;
the fixing plate is fixedly connected with the base;
a clamping jaw as claimed in any one of claims 5 to 8, wherein said clamping jaw is opened or clamped when said driving block is axially advanced or retracted by fixedly connecting said fixing plate to said base and abutting and matching said driving block by said compression part.
10. A sample analyzer, comprising: the sample analyzer includes the jaw assembly of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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