CN111526692B - Floating thread installation type plug box - Google Patents

Floating thread installation type plug box Download PDF

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Publication number
CN111526692B
CN111526692B CN202010310602.2A CN202010310602A CN111526692B CN 111526692 B CN111526692 B CN 111526692B CN 202010310602 A CN202010310602 A CN 202010310602A CN 111526692 B CN111526692 B CN 111526692B
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China
Prior art keywords
panel
screw
thread
plug
strip
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CN202010310602.2A
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Chinese (zh)
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CN111526692A (en
Inventor
邓礼兵
贲安然
黄莹瑛
胡全丹
李勉
魏观祥
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NR Electric Co Ltd
NR Engineering Co Ltd
Changzhou NR Electric Power Electronics Co Ltd
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NR Electric Co Ltd
NR Engineering Co Ltd
Changzhou NR Electric Power Electronics Co Ltd
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Application filed by NR Electric Co Ltd, NR Engineering Co Ltd, Changzhou NR Electric Power Electronics Co Ltd filed Critical NR Electric Co Ltd
Priority to CN202010310602.2A priority Critical patent/CN111526692B/en
Publication of CN111526692A publication Critical patent/CN111526692A/en
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Publication of CN111526692B publication Critical patent/CN111526692B/en
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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00Constructional details common to different types of electric apparatus
    • H05K7/18Construction of rack or frame
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00Constructional details common to different types of electric apparatus
    • H05K7/18Construction of rack or frame
    • H05K7/183Construction of rack or frame support rails therefor
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00Screening of apparatus or components against electric or magnetic fields
    • H05K9/0007Casings
    • H05K9/0049Casings being metallic containers

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Casings For Electric Apparatus (AREA)

Abstract

The invention discloses a floating thread installation type plug-in box, which comprises a frame assembly and at least two groups of thread strip assemblies movably arranged in the frame assembly; a card panel inserted from one side of the frame assembly; the side of the frame assembly facing the insertion direction of the plug-in board panel is provided with a front baffle plate; the thread strip assembly comprises a plurality of thread strips which are arranged end to end; every all be equipped with the screw hole on the screw thread strip, be equipped with the mounting hole with panel screw one-to-one on the preceding baffle, the aperture a of mounting hole slightly is greater than panel screw's external diameter b, panel screw pass behind the mounting hole with a screw hole tight fit in the screw thread strip. According to the invention, the thread strips are provided with movable gaps in the cross beam grooves, the panel screws are provided with movable gaps in the mounting holes, and the two layers of movable gaps are superposed and combined, so that the requirement of fine adjustment space during random assembly of the plug-in units is met, the occurrence of seizure phenomenon is avoided, and meanwhile, the product accumulation along with the thread strip gaps is avoided within a reasonable range.

Description

Floating thread installation type plug box
Technical Field
The invention relates to the technical field of power grid control protection type plug boxes, in particular to a floating thread installation type plug box.
Background
At present, the power grid control protection type plug-in box mainly has an aluminum profile frame structure, the overall shielding performance is limited, and the back plug-in installation mainly has two modes: one is to adopt movable thread strips in the section bar cross beam for installation, and the installation mode is used for the reserved space for fine adjustment when the plug-in units are combined side by side. However, due to the combination mode of a plurality of sectional type thread strips, along with factors such as the installation sequence of each plug-in unit, the gap can be accumulated to one direction of the case, so that the gap between the other set of plug-in units is larger or the plug-in units cannot be placed in the case; the other is to replace the thread strip with a fixed thread sleeve structure, which can cause the insert to lack the adjusting clearance and cause seizure.
The control protection case in the power industry has very high requirements on the whole electromagnetic shielding performance, the steel plate has high shielding performance, the treatment-free steel plate is more and more widely applied, the case shell is formed by the treatment-free steel plate, the whole shielding performance is better, but the metal plate upper threads generally adopt hole flanging or rivet pressing screw sleeves, the installation and adjustment mobility of plug-in components is not strong, the thin metal plate material is easy to change, and a complex structure is difficult to process to have higher precision. Therefore, the excellent combination form of the metal plate and the movable threaded strip has important significance for improving the performance of the control and protection case product and the mass production processing manufacturability.
Disclosure of Invention
In order to solve the technical problem that the plug-in box in the prior art is easy to cause larger clearance between plug-in components or is easy to cause seizure, the invention provides a floating thread mounting type plug-in box to solve the problem.
The technical scheme adopted by the invention for solving the technical problems is as follows: a floating thread mounting type plug box comprises a frame assembly and at least two groups of thread strip assemblies movably arranged in the frame assembly; the plug-in panel is inserted from one side of the frame assembly and is arranged in the inner cavity of the frame assembly; the side of the frame assembly facing the insertion direction of the plug-in board panel is provided with a front baffle plate; the thread strip assembly comprises a plurality of thread strips which are arranged end to end; every all be equipped with on the screw thread strip with panel screw cooperation fixed screw hole, be equipped with the mounting hole with panel screw one-to-one on the preceding baffle, the aperture a of mounting hole slightly is greater than panel screw's external diameter b, panel screw pass behind the mounting hole with a screw hole tight fit in the screw thread strip.
Preferably, the relationship between the aperture a of the mounting hole and the outer diameter b of the panel screw is as follows: a-b is more than or equal to 0.5mm and more than or equal to 0.8 mm.
Furthermore, along the direction of insertion of the plug-in board panel, a threaded strip accommodating space is arranged in front of the front baffle, and a group of threaded strip assemblies are placed in each threaded strip accommodating space.
Furthermore, an upper groove and a lower groove which are clamped at two ends of the threaded bar assembly are arranged in the threaded bar accommodating space, and the opening directions of the upper groove and the lower groove are both perpendicular to the length of the threaded bar assembly and the central axis of the threaded hole.
Furthermore, the frame assembly comprises a shell and a cross beam fixed inside the shell, the shell is penetrated along the insertion direction of the plug-in panel, the cross beam is located behind the front baffle, an accommodating groove is formed in one side, facing the front baffle, of the cross beam, and thread strip accommodating spaces are formed by the accommodating groove, the front baffle and shell wall surfaces located at two ends of the cross beam.
Furthermore, the frame assembly further comprises a guide rail plate laid on the inner surface of the shell, a plurality of guide grooves are formed in the guide rail plate, the opening direction of each guide groove is perpendicular to the insertion direction of the plug-in panel, and the guide grooves extend along the insertion direction of the plug-in panel.
Preferably, the thread strip assembly is provided with two groups, and the two groups are respectively connected with the upper end and the lower end of the plug-in panel.
Preferably, a cross beam and a guide rail plate are sequentially fixed on the inner top surface and the inner bottom surface of the shell, and the plug-in panel is inserted between the guide grooves of the two guide rail plates.
Preferably, the shell and the guide rail plate are made of galvanized steel sheets, and the cross beam is made of aluminum materials.
Furthermore, a clamping portion which is turned over backwards is arranged in front of the shell, and the cross beam is abutted to the end face of the rear side of the clamping portion.
The invention has the beneficial effects that:
(1) according to the floating thread mounting type insert box, the front baffle is arranged in front of the thread strip assembly, the front baffle is provided with the mounting hole, the panel screw penetrates through the mounting hole and then is fixed with the threaded hole, the thread strip is in the movable gap in the cross beam groove, the panel screw is in the movable gap in the mounting hole, the two layers of movable gaps are overlapped and combined to form a combined movable gap, the requirement of fine adjustment space during random assembly of inserts is met, the occurrence of seizure phenomenon is avoided, meanwhile, the floating thread mounting type insert box is limited within a reasonable range, products cannot be stacked together along with accumulation of the thread strip gap, and the floating thread mounting type insert box can be made of easily-deformed sheet metal materials, so that the shielding performance of the structure.
(2) The invention has good processing manufacturability, low processing cost and good integral shielding performance of the case, avoids metal plate processing complex structure by section mould forming, and is suitable for batch production.
(3) According to the invention, through a specially designed crossbeam structure, the thread strip assembly can be placed in the crossbeam accommodating groove, so that the thread strip can be adjusted within the internal clearance range, and meanwhile, the sheet metal guide rail plate and the shell are tightly combined.
(4) The cross beam is surrounded by the guide rail and the shell, the overall consistency is still kept on the appearance, and the application of the treatment-free steel plate is advocated.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a perspective view of an embodiment of a floating screw-mounted box according to the present invention;
FIG. 2 is a front view of an embodiment of a floating screw mount type of a box according to the present invention;
FIG. 3 is a right side view of an embodiment of the floating thread installation type of a box according to the present invention;
FIG. 4 is a sectional view taken along line A-A of FIG. 2;
FIG. 5 is a sectional view taken along line B-B of FIG. 3;
FIG. 6 is an enlarged view at M in FIG. 1;
FIG. 7 is an enlarged view taken at N in FIG. 4;
FIG. 8 is a schematic view of the assembly of the card panel in the present invention;
FIG. 9 is a perspective view of the cross-beam of the present invention;
FIG. 10 is a cross-sectional schematic view of the beam shown in FIG. 9;
fig. 11 is a perspective view of an embodiment of the guide rail plate according to the present invention.
In the figure, 1, a frame assembly, 101, a shell, 1011, a rear baffle, 102, a cross beam, 1021, a containing groove, 103, a guide rail plate, 1031, a guide groove, 2, a threaded strip assembly, 3, a plug-in panel, 4, a threaded hole, 5, a front baffle, 6, a mounting hole, 7, a panel screw, 8, a riveting sleeve, 9, a threaded strip containing space, 10, an upper groove, 11, a lower groove, 12, a splayed guide section, 13, a stud, 14 and a clamping part.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, specifically, the positional relationship with the housing 101 as a reference, the card panel 3 is inserted from the front to the rear of the housing 101, the card panel 3 is vertically inserted into the housing 101 in the direction of gravity (that is, the vertical direction), the top surface is located above the direction of gravity of the housing 101, and the bottom surface is located below the direction of gravity of the housing 101.
In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
As shown in fig. 1-7, a floating thread installation type plug box comprises a frame assembly 1 and at least two groups of thread strip assemblies 2 movably arranged in the frame assembly 1; the plug-in panel 3 is inserted into the inner cavity of the frame assembly 1 from one side of the frame assembly 1; the frame assembly 1 is provided with a front baffle 5 at one side facing the inserting direction of the plug-in panel 3; the thread strip assembly 2 comprises a plurality of thread strips which are arranged end to end; each threaded strip is provided with a threaded hole 4 matched and fixed with a panel screw 7, the front baffle is provided with a mounting hole 6 corresponding to the panel screws 7 one to one, the aperture a of the mounting hole 6 is slightly larger than the outer diameter b of the panel screw 7, and the panel screw 7 passes through the mounting hole 6 and then is tightly matched with one threaded hole 4 in each threaded strip.
The framework assembly 1 is used for accommodating and supporting the plug-in panel 3 and is used as a connecting structure of the thread strip assemblies 2 and the plug-in panel 3, each group of thread strip assemblies 2 is used for connecting a panel screw 7 at one end of the plug-in panel 3, usually, two ends of the plug-in panel 3 in the gravity direction are respectively connected with one group of thread strip assemblies 2, when only one row of plug-in panels 3 are installed in the framework assembly 1, only one group of thread strip assemblies 2 needs to be respectively arranged at the top and the bottom of the framework assembly 1, when the plug-in panels 3 are arranged in a multi-row mode, more than two groups of thread strip assemblies 2 need to be arranged, and preferably, the number of the thread strip assemblies 2 is twice of the number of the.
The thread strip assembly 2 is movably arranged in the frame assembly 1, meanwhile, the thread strip assembly 2 is formed by connecting a plurality of thread strips end to end (as shown in figure 5, the thread strip assembly 2 is composed of 6 thread strips, a vertical dividing line is arranged between the adjacent thread strips), the end-to-end connection only represents the end-to-end connection on the position, no substantive connection relation exists between the adjacent thread strips, therefore, each thread strip is arranged in the frame assembly 1, especially in the length direction of the thread strip assembly 2, each thread strip has a certain moving space, the front baffle is a fixed structure, the mounting hole 6 on the front baffle plays a role in pre-positioning a panel screw 7, when the panel screw 7 passes through the mounting hole 6, the panel screw 7 has certain moving space in the radial direction of the mounting hole 6, so that each panel plug-in is limited in a reasonable range, and products cannot be stacked together along with the accumulation of gaps of the thread strips.
The plug-in panels 3 in the prior art are directly arranged on the thread strips, the installation space of the plug-in panels 3 is not limited, if the plug-in panels 3 on the two sides are firstly installed, namely the plug-in panels 3 close to the wall surface of the frame assembly 1, and then the plug-in panel 3 in the middle is installed, when the installation structure of the plug-in panels 3 on the two sides is more compact, the distance between the plug-in panel 3 in the middle and the plug-in panels 3 on the two sides is overlarge, but the invention can ensure that each plug-in panel 3 is arranged in a reasonable range by the limit function of the installation holes 6 on the front baffle 5, and can ensure that the distance between any two adjacent plug-in panels 3 is reasonable regardless.
Simultaneously, take place to warp when frame assembly 1, when leading to mounting hole 6 to shift, the activity of screw thread strip sets up to provide the activity space for screw hole 4, avoids mounting hole 6 and screw hole 4's center pin can't correspond and causes the emergence of the phenomenon of dying of stinging.
The aperture of mounting hole 6 should slightly be greater than the external diameter of panel screw 7, can make panel screw 7 have certain clearance like this, if the aperture of mounting hole 6 is too big, then can't play limiting displacement, the product piles up the phenomenon and can't solve, for this reason, as preferred, the relation of the aperture a of mounting hole 6 and the external diameter b of panel screw 7 is: a-b is more than or equal to 0.5mm and more than or equal to 0.8 mm.
The threaded bar assembly 2 is arranged in the frame assembly 1 in the following manner: as shown in fig. 7 and 8, in the inserting direction of the inserter panel 3, the front of the front baffle 5 has a screw strip receiving space 9 (where the front refers to the front of the inserting direction of the inserter panel 3 specifically), that is, the screw strip receiving space 9 is arranged near the inner cavity of the frame assembly 1, the front baffle 5 is arranged near the outer side of the frame assembly 1, the panel screws 7 pass through the mounting holes 6 from the outer side of the front baffle 5 and are fixed with the screw strips in the screw strip receiving space 9, a set of screw strip assemblies 2 are arranged in each screw strip receiving space 9, for example, when the inserter panel 3 is arranged in only one row, the front baffle 5 is provided with two upper and lower parts, a screw strip receiving space 9 is arranged behind each front baffle 5 (where the rear refers to the rear of the frame assembly 1, that is, the rear shown in the figure), the screw strip assemblies 2 are arranged in the screw strip receiving space 9, the threaded strip accommodating space 9 is a closed cavity, when the panel screw 7 is screwed into the threaded hole 4, the distance between the threaded strip and the front baffle 5 is gradually reduced until the threaded strip reaches the activity limit in the threaded strip accommodating space 9, and the threaded strip and the front baffle 5 are relatively fixed at the moment, so that the panel screw 7 is fixed.
Embodiment 1, a floating screw thread installation type subrack, in which a row of plug-in panels 3 can be installed, comprises a frame assembly 1 and two groups of screw thread strip assemblies 2 movably arranged in the frame assembly 1; the plug-in panel 3 is inserted into the inner cavity of the frame assembly 1 from one side of the frame assembly 1; the frame assembly 1 is provided with a front baffle 5 at one side facing the inserting direction of the plug-in panel 3; the thread bar assembly 2 comprises a plurality of thread bars which are arranged end to end (the arrangement structure of the thread bar assembly 2 at the lower part is shown in fig. 5, the arrangement mode of the thread bar assembly 2 at the top of the shell 101 is the same as that of the thread bar assembly 2 at the bottom, and the structure at the top is omitted for the convenience of observing detailed parts); each threaded strip is provided with a threaded hole 4 matched and fixed with a panel screw 7, the front baffle 5 is provided with a mounting hole 6 corresponding to the panel screws 7 one to one, the aperture a of the mounting hole 6 is slightly larger than the outer diameter b of the panel screw 7, and the panel screw 7 passes through the mounting hole 6 and then is tightly matched with one threaded hole 4 in each threaded strip.
Riveting rivet sleeves 8 are riveted at the upper end and the lower end of the plug-in panel 3, and a panel screw 7 is screwed through the rivet sleeves 8 on the plug-in panel 3, then passes through the threaded hole 4 and is screwed into the threaded hole of the threaded strip for fixation.
The frame assembly 1 comprises a shell 101 and a cross beam 102 fixed inside the shell 101, wherein the shell 101 penetrates along the insertion direction of the plug-in panel 3, the cross beam 102 is positioned at the rear of the front baffle 5, an accommodating groove 1021 is arranged on one side of the cross beam 102, which faces the front baffle 5, and the accommodating groove 1021, the front baffle 5 and the wall surface of the shell 101, which is positioned at two ends of the cross beam 102, form a thread strip accommodating space 9.
As shown in fig. 1 to 9, the housing 101 includes four side walls, the front baffle 5 and the cross beam 102 are both fixedly connected to the housing 101 along the transverse direction and disposed near the front side of the housing 101 for connecting the panel screw 7 in front of the card panel 3, and the front baffle 5 and the cross beam 102 are disposed in front of the top surface and the bottom surface of the housing 101 for respectively fixing the upper end and the lower end of the card panel 3. A rear baffle 1011 may be further disposed at the rear of the housing 101 for limiting the rear of the card panel 3.
The shell 101 and the front baffle 5 are made of treatment-free galvanized steel plates, the cross beam 102 is an aluminum profile, the aluminum profile is light in weight, the weight of the whole plug-in box can be reduced, the shielding performance of the treatment-free galvanized steel plates is good, the aluminum profile is applied to a power grid control type plug-in box and can effectively shield external signals, the external signals are prevented from influencing the circuit performance of the plug-in panel 3 in the plug-in box, and although the galvanized steel plates can deform, the occurrence of seizure phenomenon caused by the deformation of the shell 101 and the front baffle 5 can be effectively avoided through the design of the combined type movable gap.
In the length direction of the thread strip assembly 2, the size of the thread strip accommodating space 9 is larger than that of the thread strip assembly 2, that is, the thread strip has a movable gap in the length direction (i.e. the horizontal direction in fig. 5) in the thread strip accommodating space 9, and meanwhile, the mounting holes 6 are uniformly distributed on the front baffle 5 along the length direction of the thread strip, so that the movable gap of the thread strip in the length direction is an important factor for avoiding seizure. In the direction perpendicular to the length direction of the thread strips, the size of the thread strip accommodating space 9 is slightly larger than that of the thread strips, so that the friction force when the thread strips are placed can be reduced, and the thread strips can be more easily placed in the thread strip accommodating space 9.
Embodiment 2, because the thread strip and the front bezel 5 need to be locked along the axial direction of the threaded hole 4, in embodiment 1, the receiving groove 1021 is communicated with the front bezel 5, that is, the front bezel 5 is one of the side walls of the thread strip receiving space 9, if the thread strip is not limited along the axial direction of the threaded hole 4, the thread strip will be extruded on the surface of the front bezel 5 when the thread strip is locked with the panel screw 7, and there may be a phenomenon that the thread strip cannot be completely locked with the panel screw 7, so this embodiment is improved as follows: in the screw thread strip accommodation space 9, have upper groove 10 and the lower groove 11 of card setting screw thread strip assembly 2 both ends in the accommodation tank 1021 promptly, the open direction of upper groove 10 and lower groove 11 all is perpendicular with the length direction of screw thread strip assembly 2 and the center pin of screw hole 4 simultaneously.
As shown in fig. 7-10, the upper groove 10 is located at the top of the receiving groove 1021, the opening of the upper groove 10 is downward, the lower groove 11 is located at the bottom of the receiving groove 1021, the opening of the lower groove 11 is upward, the inner side surfaces of the upper groove 10 and the lower groove 11 form front and rear limiting surfaces of the upper end and the lower end of the screw strip assembly 2, when the panel screw 7 is screwed into the screw strip, the distance between the screw strip and the front baffle 5 is gradually reduced, and the screw strip gradually presses the front limiting surfaces of the upper groove 10 and the lower groove 11 until the panel screw 7 is locked with the screw hole 4. The upper groove 10 and the lower groove 11 are used as a moving channel of the thread strip assembly 2, and simultaneously play a limiting role in the thread strips, so that the thread strips are prevented from being extruded on the surface of the front baffle 5.
Embodiment 3, in embodiment 1 or embodiment 2, the insert panel 3 is only fixedly supported by the front panel screw 7, and since the board surface size of the insert panel 3 is large, in order to avoid that the torque applied to the screw connection of the panel screw 7 is too large, which causes the connection strength to be reduced, the following improvements are made in this embodiment: the frame assembly 1 further comprises a rail plate 103 laid on the inner surface of the housing 101, the rail plate 103 is provided with a plurality of guide slots 1031, the opening direction of the guide slots 1031 is perpendicular to the insertion direction of the card panel 3, and the guide slots 1031 extend along the insertion direction of the card panel 3.
As shown in fig. 1, 2, 6 and 11, a cross member 102 and a rail plate 103 are sequentially fixed to the inner top surface and the inner bottom surface of the housing 101, guide grooves 1031 of the two rail plates 103 are oppositely arranged, and the card panel 3 is inserted between the guide grooves 1031 of the two rail plates 103. After the card board 3 is inserted into the housing 101, the edges of the upper and lower ends of the card board 3 are engaged in the guide grooves 1031, and extend into the housing 101 along the extending direction of the guide grooves 1031. The opening of the guide groove 1031 is slightly larger than the board thickness of the card panel 3, and when a slight deviation occurs in the mounting position of the card panel 3, it can still be caught in the guide groove 1031. Preferably, the guide slots 1031 have splayed guide sections 12 at both ends thereof to facilitate quick engagement of the card panel 3 into the guide slots 1031. Can set up a guide slot 1031 on the same straight line of direction of insertion, also can set up a plurality of guide slots 1031, in this embodiment, be provided with two guide slots 1031 on the same straight line of direction of insertion, connect through the panel between two guide slots 1031, can improve the intensity of guide rail plate 103 when guaranteeing the direction effect like this.
Guide rail plate 103 also adopts the treatment-free galvanized steel sheet to make in this embodiment, crossbeam 102 is located between guide rail plate 103 and casing 101, consequently, expose and all adopt the treatment-free galvanized steel sheet to make in outside structure, the light and thin shell of treatment-free steel sheet material and guide rail plate 103 make whole pleasing to the eye environmental protection, inside aluminium crossbeam 102 has supported yielding sheet metal, the bulk strength is improved, the complex structure of pure panel beating has been avoided, the whole shielding property of the subrack that uses this structure is good, economic environmental protection, it is whole pleasing to the eye.
During installation, the top of the beam 102 and the rail plate 103 are fixed by two bolts (the bolts are not shown in the figure, only bolt holes are shown in the figure), the beam 102 is fixed with the housing 101 by two bolts at the bottom and one bolt at each side (the bolts are not shown in the figure, only bolt holes are shown in the figure), the rail plate 103 is fixed with the housing 101 by two bolts at each side, and the middle stud 13 is supported on the housing 101. The shell 101 and the guide rail plate 103 are indirectly combined through the cross beam 102, and the thread strips and the thread holes 4 are kept at uniform level and at certain proportional intervals, so that each thread strip has a reasonable floating space, and the assembly and installation requirements of the plug-in units are met by limiting the thread strips in a certain range through superposition. The cross section of the cross beam 102 is approximately in a T-shaped structure, the bottom surface of the cross beam 102 is in contact with the shell 101, the width of the bottom surface is large, the supporting force is large, the top surface of the cross beam 102 is in contact with the guide rail plate 103, the width of the top surface is small, a hollow structure is arranged at a proper position on the cross beam 102, on one hand, the hollow structure is used for installing bolts, and on the other hand, the weight of the cross.
In embodiment 4, in addition to embodiment 1, embodiment 2, or embodiment 3, the housing 101 has a snap-in portion 14 folded back in front thereof, and the beam 102 abuts against a rear end surface of the snap-in portion 14. In this embodiment, the front baffle is preferably integrally formed on the guide rail plate 103, as shown in fig. 7 and 8, a rear baffle 1011 is fixed at the rear of the housing 101, a clamping portion 14 is provided at the front of the housing 101, the cross beam 102 is clamped behind the clamping portion 14, and then the cross beam 102 is fixed to the housing 101 by using bolts, when the guide rail plate 103 is installed, the front baffle 5 at the front of the guide rail plate 103 extends to the upper side of the clamping portion 14, the rear end surface of the clamping portion 14 primarily positions the cross beam 102, so as to improve the installation speed of the cross beam 102, and the front baffle is used for sealing the accommodating groove 1021.
In this specification, the schematic representations of the terms are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (10)

1. The utility model provides a screw thread installation formula subrack floats which characterized in that: comprises a frame assembly (1) and at least two groups of thread strip assemblies (2) movably arranged in the frame assembly (1);
the plug-in panel (3) is inserted from one side of the frame assembly (1) and is arranged in the inner cavity of the frame assembly (1);
the side, facing the inserting direction of the plug-in panel (3), of the frame assembly (1) is provided with a front baffle (5);
screw thread strip assembly (2) contain a plurality of end to end connect the screw thread strip of arranging, every all be equipped with on the screw thread strip with panel screw (7) cooperation fixed screw hole (4), be equipped with on preceding baffle (5) with panel screw (7) one-to-one mounting hole (6), the aperture a of mounting hole (6) slightly is greater than the external diameter b of panel screw (7), panel screw (7) pass behind mounting hole (6) with a screw hole (4) tight fit in the screw thread strip.
2. The floating thread installation jack of claim 1, wherein: the relationship between the aperture a of the mounting hole (6) and the outer diameter b of the panel screw (7) is as follows: a-b is more than or equal to 0.5mm and more than or equal to 0.8 mm.
3. The floating thread installation jack of claim 1, wherein: along in the direction of insertion of plug-in components panel (3), the place ahead of preceding baffle (5) has screw thread strip accommodation space (9), every place a set of screw thread strip assembly (2) in screw thread strip accommodation space (9).
4. The floating thread installation jack of claim 1, wherein: the thread strip accommodating space (9) is internally provided with an upper groove (10) and a lower groove (11) which are clamped at two ends of the thread strip assembly (2), and the opening directions of the upper groove (10) and the lower groove (11) are both vertical to the length of the thread strip assembly (2) and the central axis of the thread hole (4).
5. The floating thread installation jack of claim 1, wherein: the frame assembly (1) comprises a shell (101) and a cross beam (102) fixed inside the shell (101), the shell (101) penetrates through along the insertion direction of the plug-in panel (3), the cross beam (102) is located behind the front baffle (5), an accommodating groove (1021) is arranged on one side, facing the front baffle (5), of the cross beam (102), and the accommodating groove (1021) and the front baffle (5) and the wall surfaces of the shell (101) located at two ends of the cross beam (102) form a thread strip accommodating space (9).
6. The floating thread installation jack of claim 5, wherein: the frame assembly (1) further comprises a guide rail plate (103) laid on the inner surface of the shell (101), a plurality of guide grooves (1031) are formed in the guide rail plate (103), the opening direction of the guide grooves (1031) is perpendicular to the inserting direction of the plug-in board (3), and the guide grooves (1031) extend along the inserting direction of the plug-in board (3).
7. The floating thread installation jack of claim 6, wherein: the thread strip assemblies (2) are provided with two groups and are respectively connected with the upper end and the lower end of the plug-in panel (3).
8. The floating thread installation jack of claim 7, wherein: a beam (102) and a guide rail plate (103) are sequentially fixed on the inner top surface and the inner bottom surface of the shell (101), and the plug-in panel (3) is inserted between the two guide grooves (1031) of the guide rail plate (103).
9. The floating thread installation jack of claim 6, wherein: the shell (101) and the guide rail plate (103) are made of galvanized steel sheet materials, and the cross beam (102) is made of aluminum materials.
10. The floating thread installation box of any one of claims 5 to 9, wherein: the front of the shell (101) is provided with a clamping portion (14) which is turned over backwards, and the cross beam (102) abuts against the rear end face of the clamping portion (14).
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