JP2016080512A - Electrophoretic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique capable of reducing such possibility that a finger enters between an electrophoretic vessel and a supply body, in an electrophoretic apparatus capable of integrating the electrophoretic vessel with the supply body for power supply.SOLUTION: In an electrophoretic apparatus 10, an electrophoretic vessel 12 opens 22 upward. A lid body 16 closes the opening 22 of the electrophoretic vessel 12. A supply body 14 supplies power to the electrophoretic vessel 12. The electrophoretic vessel 12 has a terminal provided while protruding on a terminal formation surface on the outside of the electrophoretic vessel 12. The supply body 14 has a reception port formation part on which a reception port into which the terminal can be inserted and from which the terminal can be removed, is formed. The electrophoretic vessel 12 and the supply body 14 take a connection state in which the terminal is inserted into the reception port and electrically connected. The lid body covers the opening 22 of the electrophoretic vessel 12. A pair of side wall parts suspends from an edge of the lid body part, and face each other across the terminal formation surface of the electrophoretic vessel 12. The pair of side wall parts protrudes to the supply body 14 side from both side positions of the reception port formation part, from the electrophoretic vessel 12 side toward the supply body 14 side, in the connection state.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an electrophoresis apparatus for analyzing a sample.

  The electrophoresis apparatus is used for analyzing nucleic acids and proteins using electrophoresis. For example, in agarose electrophoresis, when a negatively charged nucleic acid is placed in an electric field, it moves to the positive pole side in the network structure of the agarose gel. Long DNA fragments move slowly and caught in the network structure, whereas short DNA fragments move faster and do not catch too much, so it is possible to separate DNA fragments by length.

  The electrophoresis apparatus disclosed in Patent Document 1 includes an electrophoresis tank for storing a buffer solution and a sample, a lid for closing the opening of the electrophoresis tank, and a power supply unit for supplying power to the electrophoresis tank. By inserting the convex plug formed on the outer wall of the migration tank into the socket formed on the outer wall of the power supply unit, the migration tank and the power supply unit are coupled while being electrically connected.

  The lid part of Patent Document 1 has a wall part that hangs down from the edge, and the wall part of the lid part enters the gap between the migration tank and the power supply part with the opening of the migration tank closed. The coupling between the electrophoresis tank and the power supply unit is released by rotating the lid part so that the edge of the lid part pushes the power supply part away from the migration tank.

JP 2005-30951 A

  In the electrophoresis apparatus disclosed in Patent Document 1, the electrophoresis tank and the power supply unit are integrally coupled. However, since there is a gap between the electrophoresis tank and the power supply unit, there is a risk that a worn item such as a finger or a necklace may enter the gap. There is.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a finger or the like between the electrophoresis tank and the supply body in an electrophoresis apparatus capable of integrating the electrophoresis tank and the power supply supply body. It is to provide a technique for reducing the possibility of entering.

  In order to solve the above problems, an electrophoresis apparatus according to an aspect of the present invention includes an electrophoresis tank that opens upward, a lid that closes the opening of the electrophoresis tank, and a supply body that supplies power to the electrophoresis tank. . The migration tank has terminals provided so as to protrude from the terminal forming surface outside the migration tank. The supply body has a receiving port forming portion provided with a receiving port through which a terminal can be inserted and removed. The electrophoresis tank and the supply body are connected to each other by inserting the terminals into the receptacles and electrically connected. The lid body is suspended from the lid body part covering the opening of the electrophoresis tank and the edge of the lid body part. And a pair of side wall portions facing each other across the terminal forming surface of the tank. In the connected state, the pair of side wall portions project from the side of the both sides of the receiving port forming portion toward the supply body side from the migration tank side toward the supply body side.

  ADVANTAGE OF THE INVENTION According to this invention, in the electrophoresis apparatus which can integrate an electrophoresis tank and the supply body for electric power supply, the technique which reduces the possibility that a finger will enter between an electrophoresis tank and a supply body can be provided.

It is a figure for demonstrating the electrophoresis apparatus which concerns on embodiment. It is a figure for demonstrating an electrophoresis tank. It is a figure for demonstrating a supply body, and is the perspective view which looked at the receptacle formation surface of the supply body. It is a figure for demonstrating a cover body, and is the perspective view which looked at the cover body from upper direction. It is a figure for demonstrating the connection state which the electrophoresis tank and the supply body connected. It is a figure for demonstrating the electrophoresis apparatus of a connection state. It is a figure for demonstrating the state which closed the opening of the electrophoresis tank with the cover body, and shows the front side of an electrophoresis tank and a cover body with a perspective view. It is a figure for demonstrating the method of removing the connection of the electrophoresis tank and supply body of an electrophoresis apparatus. It is the elements on larger scale of a supply body. It is the elements on larger scale of an electrophoresis tank. It is a figure for demonstrating an electrode wire cover, and is the elements on larger scale of an electrophoresis tank. 12 (a) and 12 (b) are perspective views of the electrode wire cover.

  FIG. 1 is a diagram for explaining an electrophoresis apparatus 10 according to an embodiment. FIG. 1A is a perspective view of the electrophoresis apparatus 10, and FIG. 1B is a perspective view in which the lid 16 is omitted from the electrophoresis apparatus 10.

  The electrophoresis apparatus 10 is used for analyzing nucleic acids and proteins. As shown in FIG. 1A, the electrophoresis apparatus 10 includes an electrophoresis tank 12, a supply body 14, a lid body 16, and a power adapter (not shown).

  As shown in FIG. 1B, the migration tank 12 opened upward is a container for storing a buffer solution. A pedestal 26 for placing a carrier such as agarose gel as a sample is formed in the electrophoresis tank 12 and immersed in a buffer solution. Electrodes are wired by electrode wire support portions 30 formed on both side surfaces of the electrophoresis tank 12. The supply body 14 supplies electric power to the electrode of the migration tank 12. The lid 16 closes the opening 22 of the electrophoresis tank 12, prevents contact with the buffer solution during application of voltage, and prevents electric shock. Further, the plurality of lattice holes 72 formed in the lid body 16 allow the vapor of the heated buffer solution to escape.

  As shown in FIG. 1A, the electrophoresis tank 12, the supply body 14, and the lid body 16 of the electrophoresis apparatus 10 are formed as one unit. The electrophoresis tank 12, the supply body 14, and the lid body 16 can be detached from the unit state as necessary.

  For example, when a buffer solution is put into the electrophoresis tank 12, the lid 16 is removed from the electrophoresis tank 12 as shown in FIG. During or after the experiment, when the state of the sample in the electrophoresis tank 12 is confirmed by applying ultraviolet rays, the electrophoresis tank 12 and the supply body 14 are disconnected, and the electrophoresis tank 12 is moved to the ultraviolet irradiation device.

  The supply body 14 has a power input unit 44 and a power switch 46 on the back surface. The supply body 14 is driven by inserting a power adapter connected to an outlet into the power input unit 44 of the supply body 14 and energizing the power supply 14 to turn on the power switch 46 of the supply body 14. When the power switch 46 is turned off, the supply body 14 is not driven.

  The user turns on the power switch 46 and operates a plurality of buttons (not shown) provided on the operation panel 40 with respect to the one-unit electrophoresis apparatus 10 shown in FIG. Device 10 is used. The supply body 14 has an output voltage setting function for setting the voltage in a plurality of stages and a timer function for setting the application time. The electrophoresis apparatus 10 is configured so that a user can lift it with one hand by inserting a finger under the handle 42 of the supply body 14 and holding the supply body 14. Each member of the electrophoresis apparatus 10 will be described in detail with reference to a new drawing.

  FIG. 2 is a diagram for explaining the electrophoresis tank 12. FIG. 2A is a perspective view of the migration tank 12, and FIG. 2B is a plan view of the migration tank 12. Here, the same or equivalent components and members shown in the drawings are denoted by the same reference numerals, and repeated description thereof is omitted as appropriate.

  The electrophoresis tank 12 includes a tank body 20, an opening 22, a first terminal 24 a and a second terminal 24 b (referred to as “terminal 24” if they are not distinguished from each other), a pedestal part 26, a first electrode part 28 a, A two-electrode portion 28b (referred to as "electrode portion 28" if they are not distinguished from each other), an electrode wire support portion 30, an electrode wire cover 32, a support portion 34, a flange portion 36, and an overhang portion 38. . Here, the terminal forming surface 20a on which the terminal 24 of the electrophoresis tank 12 shown in FIG. 2A is formed is assumed to be the front, and the holding surface 20c on the opposite side is assumed to be the rear.

  The tank body 20 is formed in a bottomed rectangular tube shape and is opened upward in order to contain a buffer solution and a sample. The tank body 20 includes a rectangular bottom portion 20d, a terminal forming surface 20a erected from the front side of the bottom portion 20d, a gripping surface 20c erected from the rear side of the bottom portion 20d, and a side surface erected from both sides of the bottom portion 20d. 20b. The tank body 20 is made of an insulating resin material, and is made of a transparent material that transmits ultraviolet rays. A flange portion 36 is formed on the edge of the opening 22 of the tank body portion 20 so as to project outward.

  A pedestal 26 is formed in the tank body 20 at a position higher than the lowest position of the bottom 20d. A sample placed on a tray is placed on the rectangular pedestal 26. On each side of the pedestal portion 26, an edge guide portion 26a extending in a protruding shape is formed so that the placed tray and the sample do not move. Further, a central guide portion 26b extending in a projecting manner in the front-rear direction is formed at the center of the base portion 26. A tray and a sample of a smaller size can be placed on the central guide portion 26b so as not to be displaced. A solution line 20e serving as a measure of the amount of the buffer solution is formed on the gripping surface 20c inside the tank body 20.

  The first terminal 24a and the second terminal 24b function as plugs for electrically connecting to the supply body 14, the first terminal 24a is connected to the anode, and the second terminal 24b is connected to the cathode. The first terminal 24a and the second terminal 24b are A-type plugs provided apart from each other on the left and right sides and provided with a flat metal plate in parallel, and projecting from the terminal forming surface 20a outside the migration tank 12. Provided. The tip of the terminal 24 is formed in a rounded arc shape.

  A support portion 34 protruding from the terminal forming surface 20 a of the tank body 20 is formed at the base of the terminal 24. The support portion 34 is formed so as to surround the base of the terminal 24 so as to support at least the base of the terminal 24. The support portion 34 is formed of an insulating material, and reduces the possibility of contact with the terminal 24 by the user in the connected migration tank 12 and the supply body 14. Further, the load resistance of the terminal 24 supported on the thin wall surface by the support portion 34 can be improved. The protruding height of the support portion 34 from the terminal forming surface 20a is preferably at least one-fourth of the protruding height of the terminal 24 from the terminal forming surface 20a.

  The first electrode portion 28a is a conducting wire connected to the first terminal 24a, and the second electrode portion 28b is a conducting wire connected to the second terminal 24b. The electrode part 28 is a conducting wire made of, for example, platinum or gold. The first electrode portion 28a extends in the front-rear direction along one side surface 20b, and the second electrode portion 28b extends in the front-rear direction along the other side surface 20b. The first electrode portion 28a and the second electrode portion 28b can be energized by adding an electrolyte buffer solution to the tank body 20.

  Electrode wire support portions 30 are respectively formed along the side surface 20 b on the inner side of the tank body portion 20 to support the electrode portion 28. The electrode wire cover 32 is formed of an insulating material and covers the electrode portion 28 and the connection portion between the electrode portion 28 and the terminal 24 to prevent exposure. The electrode wire cover 32 is fixed to the flange portion 36.

  The electrode wire cover 32 has an engaging portion 32a formed in a convex shape on the lower surface. The engaging portion 32a is formed at a position protruding forward from the terminal forming surface 20a. The overhanging portion 38 is formed so as to protrude forward from the lower end of the terminal forming surface 20a. The overhang portion 38 is formed in a flat plate shape, enters the lower side of the connected supply body 14, and supports the electrophoresis tank 12 when the supply apparatus 14 is held and the electrophoresis apparatus 10 is lifted.

  By providing the pair of terminals 24 on the left and right according to the pair of electrode portions 28, the length of the conducting wire of the electrode portion 28 can be shortened, and the cost can be reduced. In order to shorten the length of the electrode portion 28, the terminal 24 is provided in the vicinity of the side of the terminal forming surface 20a.

  FIG. 3 is a view for explaining the supply body 14, and shows a perspective view of the supply opening 14 of the supply body 14. The supply body 14 is a device for supplying electric power to the electrode part 28 of the electrophoresis tank 12, and includes a connecting step part 48 that forms a receiving port 50 and a main body part 43. The connecting step 48 functions as a receiving port forming unit for forming the receiving port 50.

  The main body 43 is provided in a box shape and accommodates a voltage supplied to the migration tank 12 and a control board for controlling the display unit of the operation panel 40, a power input unit 44, and the like. The connecting step 48 protrudes from the front surface 43a of the supply body 14 in a rectangular parallelepiped shape. The connecting step 48 has a receiving port forming surface 54, an upper surface 48a, and a side surface 48b. The upper surface 48a and the side surface 48b protrude from the front surface 43a to form a stepped portion.

  The upper surface 48 a of the connecting step 48 is formed one step lower than the operation panel 40, but is not limited to this aspect, and may be formed at the same height as the operation panel 40 of the main body 43. Further, the side surface 48b of the connecting step portion 48 is formed to be recessed by one step from the side surface 41 of the main body portion 43, but the side surface 48b of the connecting step portion 48 and the side surface 41 of the main body portion 43 are formed to be flat. It's okay. That is, it is not limited to the aspect which provides a step part in a receptacle formation part.

  The receiving port 50 is formed in a hole shape on the receiving port forming surface 54 and functions as a socket for receiving the terminal 24 of the migration tank 12. The receiving ports 50 are provided in the vicinity of the left and right side sides 54 a of the receiving port forming surface 54 according to the positions of the pair of terminals 24. The receiving port 50 is formed in a longitudinal shape in the vertical direction so as to be longer than the vertical width of the terminal 24. By enlarging the receiving port 50, the terminal 24 can be easily inserted into the receiving port 50, and the terminal 24 can be inserted into the receiving port 50 in a state where the supply body 14 is inclined.

  A recess 52 is formed around the receiving port 50 by recessing the receiving port forming surface 54. The tip of the support part 34 enters the recess 52 and comes into contact with or approaches. The engaged portion 62 is formed in a concave shape on the upper surface 48 a of the connecting step portion 48, and is engaged with the engaging portion 32 a of the migration tank 12.

  The first switch 56 is provided to protrude from the receiving port forming surface 54. The first switch 56 is a push button type, and is biased in a protruding direction by a spring. If the first switch 56 is not pressed to a predetermined depth due to contact with the migration tank 12, the supply body 14 does not supply power to the migration tank 12 without being turned on. The connection state between the migration tank 12 and the supply body 14 can be confirmed by the first switch 56.

  The second switch 58 is provided so as to protrude from the switch hole 60 formed in the side surface 48 b of the connecting step 48. The switch hole 60 is formed in a longitudinal shape in the vertical direction, and allows the second switch 58 to move in the vertical direction. The second switch 58 is biased upward. The second switch 58 is turned on when it moves downward by a predetermined distance or more. If the second switch 58 is not turned on by contact with the lid 16, the second switch 58 does not supply power to the electrophoresis tank 12. Thereby, it can confirm that the cover 16 closed the opening 22 of the electrophoresis tank 12 in the electrophoresis tank 12 and the supply body 14 of a connection state, and can confirm that the electrophoresis apparatus 10 is a connection state.

  When the first switch 56 and the second switch 58 are both turned on, the supply body 14 can supply power to the migration tank 12, and when both the first switch 56 and the second switch 58 are not turned on, the supply body 14 can be powered. No power is supplied to the tank 12. By forming the first switch 56 in the vicinity of one side 54a of the receiving port forming surface 54 and forming the second switch 58 in the vicinity of the other side 54a, the respective switches can be provided apart from each other on the left and right. Thus, it is possible to confirm the connection of both the terminal 24 and the receiving port 50 which are provided apart from each other on the left and right. In other words, when the second terminal 24b is sufficiently inserted into the receiving port 50 and the first terminal 24a is not sufficiently inserted into the receiving port 50, the first switch 56 is not turned on. In addition, when the opening 22 is closed by the lid body 16, when the first terminal 24 a is sufficiently inserted into the receiving port 50 and the insertion of the second terminal 24 b into the receiving port 50 is insufficient, the second switch 58 is It has a structure that does not turn on.

  A cooling hole 64 for cooling the power supply is formed in the middle of the side surface 41 of the main body 43. The base 66 serving as the base of the main body 43 and the connecting step 48 is provided to be separated from the left and right. Thereby, the overhang | projection part 38 of the electrophoresis tank 12 enters between a pair of base parts 66 in a connection state.

  FIG. 4 is a view for explaining the lid body 16 and is a perspective view of the lid body 16 as viewed from above. The lid 16 closes the opening 22 of the electrophoresis tank 12 in order to prevent contact with the energized buffer solution in the electrophoresis tank 12. The lid body 16 is formed of an insulating material and may be formed of a transparent material that transmits ultraviolet rays.

  The lid body 16 includes a lid main body portion 70, a side wall portion 74, and a front side wall portion 76. The lid main body 70 is formed larger than the opening 22 of the migration tank 12 and covers the opening 22. A plurality of lattice holes 72 are formed in the lid main body portion 70 so as not to fog the lid main body portion 70 with a buffer solution that evaporates. The lattice hole 72 is formed in a longitudinal shape along the front-rear direction, and is formed from one side 70b to the other side 70b. By forming the lattice holes 72 in a longitudinal shape along the front-rear direction, DNA fragments that move in the left-right direction during electrophoresis can be easily seen.

  The pair of side wall parts 74 hangs down from the side 70b of the lid main body part 70 and is formed substantially parallel to each other. The side wall portion 74 is formed so as to hang down from all sides of the side edge 70b, but may hang down from a part of the side edge 70b or only from the front side of the side edge 70b. The lower end 74 a of the side wall portion 74 can push the second switch 58.

  The front side wall portion 76 hangs down from the front side 70 a of the lid main body portion 70 and rides on the connecting step portion 48 of the supply body 14. The front side wall portion 76 is formed on the same plane as the side edge 74 b of the side wall portion 74.

  FIG. 5 is a diagram for explaining a connection state in which the electrophoresis tank 12 and the supply body 14 are connected. FIG. 5 shows an enlarged connection portion between the electrophoresis tank 12 and the supply body 14 and shows a connection state in which the first switch 56 is turned on.

  In the state where the electrophoresis tank 12 and the supply body 14 are integrated, the flange portion 36 protrudes to a position above the upper surface 48 a of the connecting step portion 48, and the overhang portion 38 is below the lower surface of the connecting step portion 48 and the main body portion 43. Overhang to the position. Since the support portion 34 is positioned in the gap between the terminal forming surface 20a and the receiving port forming surface 54, the exposure of the terminal 24 is suppressed. The protruding height of the support portion 34 from the terminal forming surface 20a may be set to the same length as the horizontal distance between the terminal forming surface 20a and the receiving port forming surface 54.

  In the state where the migration tank 12 and the supply body 14 are integrated, the second switch 58 is not turned on, so the supply body 14 does not supply power to the migration tank 12.

  FIG. 6 is a diagram for explaining the electrophoretic device 10 in a connected state. FIG. 6 shows a state in which the opening 22 of the electrophoresis tank 12 is closed by the lid 16 with respect to the integrated electrophoresis tank 12 and the supply body 14 shown in FIG. The electrophoretic device 10 in a connected state refers to a state in which the electrophoresis tank 12 and the supply body 14 are integrated and the lid 16 closes the opening 22. That is, in the electrophoretic device 10 in the connected state, the first switch 56 and the second switch 58 are turned on.

  By closing the opening 22 with the lid body 16, the lower end 74 a of the side wall portion 74 of the lid body 16 pushes the second switch 58 downward, the second switch 58 is turned on, and the supply body 14 feeds the electrophoresis tank 12. It becomes possible. When the cover body 16 is removed from the electrophoresis tank 12, the second switch 58 returns to the upper initial position and is turned off. By projecting the side wall portion 74 so as to face the side surface 48 b of the connecting step portion 48, the lid body 16 can push the second switch 58.

  In a connected state, the pair of side wall portions 74 project from the position of both side sides 54a of the receiving port forming surface 54 toward the supply body 14 side from the migration tank 12 side toward the supply body 14 side. A side edge 74b on the front side of the side wall portion 74 is positioned on the supply body 14 side with respect to the receptacle forming surface 54 in the horizontal direction, and projects to the side of the side surface 48b. As a result, the side wall portion 74 of the lid 16 covers the gap between the terminal forming surface 20a and the receiving port forming surface 54, and covers the terminal 24 and the receiving port 50, which are electrical connection portions, so Can be less likely to enter the gap between the terminal forming surface 20a and the receiving port forming surface 54.

  In the connected state, the lid main body portion 70 projects toward the supply body 14 from the position of the upper side 54b of the receiving port forming surface 54 from the migration tank 12 side toward the supply body 14 side. The front side 70 a of the lid main body 70 projects toward the supply body 14 to cover the upper surface 48 a of the connecting step 48, and the front side wall 76 is a gap between the flange portion 36 of the migration tank 12 and the front surface 43 a of the main body 43. Get into. Thereby, the gap above the electrophoresis tank 12 and the supply body 14 can be covered. Further, the lid main body portion 70 and the operation panel 40 can be made substantially the same height by forming the connecting step portion 48 in a step shape.

  In this manner, the lid 16 projects to the upper surface 48a and the side surface 48b of the connecting step portion 48 of the supply body 14, so that the gap between the migration tank 12 and the supply body 14 can be covered, and fingers and the like are placed in the clearance. The possibility of entering can be reduced and electric shock can be prevented.

  FIG. 7 is a diagram for explaining a state in which the opening 22 of the migration tank 12 is closed by the lid 16, and shows a front side of the migration tank 12 and the lid 16 in a perspective view. When the lid 16 closes the opening 22, the front flange portion 36 of the migration tank 12 is covered with the lid main body portion 70 and the front side wall portion 76.

  The pair of side wall portions 74 oppose each other with the terminal forming surface 20a of the migration tank 12 interposed therebetween. The front side edge 74b of the side wall portion 74 is provided so as to be substantially at the same position as the tip of the terminal 24 in the front-rear direction. Further, the lower end 74 a of the side wall portion 74 is located below the terminal 24. The terminal 24 is located between the side wall portions 74. Thereby, the terminal 24 can be covered by the side wall portion 74.

  FIG. 8 is a diagram for explaining a method of disconnecting the electrophoresis tank 12 and the supply body 14 of the electrophoresis apparatus 10. When power is supplied to the sample in the electrophoresis tank 12 for a desired set time, the sample needs to be moved to the ultraviolet device in order to apply ultraviolet light to the sample. In this case, the user can move to the ultraviolet device with the sample in the electrophoresis tank 12 by removing the electrophoresis tank 12 from the supply body 14, and after irradiating ultraviolet rays, the user can connect the electrophoresis tank 12 to the supply body 14, Furthermore, electrophoresis can be performed. In addition, when irradiating a sample in the electrophoresis tank 12 with ultraviolet rays using an ultraviolet ray apparatus, the lid 16 may or may not be removed.

  The user holds the electrophoresis tank 12 with one hand so that the buffer solution does not spill from the opening 22. The handle 42 of the supply body 14 is held with the other hand, and the supply body 14 is rotated. Specifically, the user presses the front surface 43 a of the supply body 14 against the front side 70 a of the lid main body 70 so as to lift the handle 42 upward, and rotates the supply body 14. As a result, the receiving port forming surface 54 is separated from the terminal forming surface 20a, and the receiving port 50 is detached from the terminal 24 to be disconnected.

  When the connection is released, the first switch 56 pushed by the terminal forming surface 20a returns to the initial position, and the first switch 56 is turned off. Further, the second switch 58 returns to the initial position when the lid body 16 is separated from the supply body 14, and the second switch 58 is turned off. Thus, if the supply body 14 is rotated, the connection between the electrophoresis tank 12 and the supply body 14 can be easily removed.

  FIG. 9 is a partially enlarged view of the supply body 14. FIG. 10 is a partially enlarged view of the electrophoresis tank 12. FIG. 9 mainly shows the receiving port 50 of the supply body 14, and FIG. 10 mainly shows the first terminal 24 a of the electrophoresis tank 12.

  As shown in FIG. 9, the receiving port 50 is formed in a longitudinal shape in the vertical direction, and as shown in FIG. 10, the tip of the first terminal 24a is formed in a circular arc shape. Further, the first terminal 24a is disposed flat along the vertical direction. Thus, as shown in FIG. 8, when the supply body 14 is rotated, the terminal 24 is prevented from being caught by the lower portion of the receiving port 50, and is configured to be easily disconnected.

  As shown in FIG. 9, the engaged portion 62 is formed in a concave shape on the upper surface 48a of the connecting step portion 48 that functions as a receiving port forming portion. Further, as shown in FIG. 10, the engaging portion 32 a is formed in a convex shape on the lower surface of the flange portion 36. As shown in FIG. 5, in the connected state, the flange portion 36 rides on the upper surface 48a of the connecting stepped portion 48, and the engaging portion 32a enters the engaged portion 62 and engages. The engaging part 32a and the engaged part 62 are engaged in a connected state, and limit the migration tank 12 and the supply body 14 from separating in the horizontal direction. Thereby, the connection state of the electrophoresis tank 12 and the supply body 14 can be prevented from coming off in the horizontal direction. For example, the receiving port 50 can be opened wide to facilitate the insertion of the terminal 24. Further, it is not necessary to mechanically connect the migration tank 12 and the supply body 14 with the terminal 24 and the receiving port 50, and the protruding amount of the terminal 24 can be reduced.

  Since the engagement between the engaging portion 32a and the engaged portion 62 is easily released when they are separated in the vertical direction, the supply body 14 is rotated as shown in FIG. Can do. The engaging portion 32a may be formed in a concave shape and the engaged portion 62 may be formed in a convex shape, and both the engaging portion 32a and the engaged portion 62 may be formed in a convex shape and engaged with each other. May be configured.

  FIG. 11 is a diagram for explaining the electrode wire cover 32, and is a partially enlarged view of the migration tank 12. 12A and 12B are perspective views of the electrode wire cover 32. FIG.

  The electrode wire cover 32 is attached to the migration tank 12 so that the conductive portions are not exposed after the terminals 24 and the electrode portions 28 are connected by soldering and the electrode portions 28 are wired.

  The first groove portion 32 b of the electrode wire cover 32 covers the terminal 24 and the electrode portion 28 on the upper surface side of the flange portion 36, and the second groove portion 32 c connects the electrode portion 28 wired inside the tank body portion 20 to the electrode wire support portion 30. Cover up to. The first groove portion 32b and the second groove portion 32c can communicate with each other through a cylindrical portion 32f formed therebetween, and the electrode portion 28 can be wired.

  The first groove portion 32 b is fitted to the flange portion 36 to fix the electrode wire cover 32 to the migration tank 12. An engaging portion 32a is formed on the outer surface of the first groove portion 32b. Thereby, the engaging part 32a can be formed in a convex shape at a position protruding forward.

  The lower end 32d of the second groove 32c is in contact with or close to the electrode wire support 30. The second groove portion 32c suppresses the exposure of the electrode portion 28, and the buffer solution rises and leaks along the linear electrode portion 28 by capillary action, or the vaporized buffer solution is liquefied around the electrode portion 28. It is possible to suppress leakage through the electrode portion 28 due to capillary action.

  The present invention is not limited to the above-described embodiments, and various modifications such as design changes can be added to the embodiments based on the knowledge of those skilled in the art, and such modifications have been added. Embodiments may also be included within the scope of the present invention.

  For example, in the embodiment, the mode in which the first switch 56 is pushed by the terminal forming surface 20a is shown, but the present invention is not limited to this mode. A protrusion for pressing the first switch 56 may be formed on the terminal forming surface 20a. In any case, it is sufficient that the connection between the electrophoresis tank 12 and the supply body 14 can be confirmed.

  Further, the manner in which the second switch 58 is pushed by the lower end 74 a of the side wall portion 74 of the lid 16 is not limited to this, and the second switch 58 may be pushed at another location of the lid 16. In any case, it is only necessary to confirm that the lid 16 has closed the opening of the migration tank 12.

  DESCRIPTION OF SYMBOLS 10 Electrophoresis apparatus, 12 Electrophoresis tank, 14 Supply body, 16 Lid body, 20 Tank main body part, 20a Terminal formation surface, 22 Opening, 24a 1st terminal, 24b 2nd terminal, 26 Base part, 28a 1st electrode part, 28b Second electrode section, 30 electrode line support section, 32 electrode line cover, 32a engagement section, 34 support section, 36 flange section, 38 overhang section, 40 operation panel, 41 side surface, 42 handle, 43 main body section, 43a Front surface, 44 power input section, 46 power switch, 48 connecting step section, 48a upper surface, 48b side surface, 50 receiving port, 52 recessed portion, 54 receiving port forming surface, 54a side side, 54b upper side, 56 first switch, 58 second switch Switch, 60 Switch hole, 62 Engaged part, 64 Cooling hole, 66 Base part, 70 Body portion, 70a before-edge, 70b sides, 72 grid holes, 74 side wall, 74a lower, 74b side edges, 76 front side wall portion.

Claims (6)

An electrophoresis tank that opens upward;
A lid for closing the opening of the electrophoresis tank;
A supply body for supplying power to the electrophoresis tank,
The migration tank has a terminal provided protruding from the terminal forming surface outside the migration tank,
The supply body has a receptacle forming portion provided with a receptacle through which the terminal can be inserted and removed,
The migration tank and the supply body are connected to each other by inserting the terminal into the receiving port and being electrically connected,
The lid is
A lid body covering the opening of the electrophoresis tank;
A pair of side wall portions that hang down from the edge of the lid main body portion and face each other across the terminal forming surface of the electrophoresis tank,
A pair of said side wall part protrudes in the said supply body side from the position of the both sides of the said receptacle formation part toward the said supply body side from the said electrophoresis tank side in the said connection state.   2. The electrophoresis according to claim 1, wherein in the connected state, the lid main body portion projects from the position of the upper side of the receiving port forming portion toward the supply body from the electrophoresis tank side toward the supply body side. apparatus.   The electrophoresis apparatus according to claim 1, wherein the electrophoresis tank further includes a support portion that is formed to protrude from the terminal formation surface so as to support at least a base of the terminal. The supply body has a first switch provided in the receptacle forming portion,
4. The electrophoresis apparatus according to claim 1, wherein the supply body does not supply power to the electrophoresis tank unless the first switch is turned on by contact with the electrophoresis tank. 5. . The supply body has a second switch provided on a side surface of the receptacle forming portion,
5. The electrophoresis apparatus according to claim 1, wherein the supply body does not supply power to the electrophoresis tank unless the second switch is turned on by contact with the lid. 6. . The electrophoresis tank is
A flange portion formed so as to protrude from the upper end of the terminal forming surface;
An engagement portion formed in a convex shape or a concave shape on the lower surface of the flange portion,
The supply body has an engaged portion formed in a concave shape or a convex shape on an upper surface of the receptacle forming portion,
The engagement portion and the engaged portion are engaged in the connected state to restrict the migration tank and the supply body from separating in the horizontal direction. The electrophoresis apparatus according to 1.

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