CN216794464U - Draw-out switch - Google Patents

Abstract

A draw-out switch belongs to the technical field of low-voltage electricity. Including switch body, drawer seat, the switch body contact group of setting on the switch body and fix the drawer seat contact group on the drawer seat, switch body contact group follows the switch body to the inside removal of drawer seat and with drawer seat contact group pegs graft, and characteristics are: the switch comprises a switch body and is characterized in that a mounting plate extending along the X direction of the moving direction of the switch body is arranged on the switch body, a fixing column is convexly arranged on the mounting plate, a limiting hole is further formed in the mounting plate, the fixing column extends along the Z direction perpendicular to the X direction, the limiting hole extends along the Y direction perpendicular to the X direction and the Z direction, and a mounting groove for accommodating the fixing column and a limiting boss for accommodating the limiting hole are formed in a contact group of the switch body. The contact group is simple and reliable in plugging; the draw-out type automatic change-over switch body has good compact effect.

Description

Draw-out switch

Technical Field

The utility model belongs to the technical field of low-voltage electricity, and particularly relates to a draw-out switch.

Background

As is known in the art, the draw-out switch is widely used in power distribution networks because of its convenience in daily maintenance compared to the fixed switch.

In the construction of a withdrawable switch, comprising a switch body and a drawer base, the switch body can be swung out of or into the drawer base as required by means of a rocker arm (also called "rocker"). Specifically, the drawer seat is a static part, the switch body is a movable part, and the three positions of separation, test and connection are arranged relative to the drawer seat.

The drawout switch is not limited to the conventional circuit breaker, and for example, it includes a drawout Automatic Transfer Switching Equipment (ATSE) that switches between different power sources such as a common power source and a backup power source to provide an uninterruptible power supply to a load, i.e., to continuously supply power to the load. The draw-out type automatic transfer switch electric appliance contact group in the prior art adopts a top-mounted structure, so the volume is relatively large, when the switch body enters the drawer seat, the opposite insertion resistance between the switch body contact group and the drawer seat contact group is large, even the switch body is difficult to push into the drawer seat, and therefore the male insertion and the female insertion of the secondary contact group are difficult to be inserted in place, and poor contact exists. Particularly, in the bypass type automatic transfer switching apparatus, it is inconvenient to stack two draw-out type automatic transfer switches, and installation in some places or positions limited by space is critical.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a draw-out switch which is beneficial to realizing self adjustment of a switch body contact group in the process of contact assembly and plug-in connection with a drawer base so as to ensure that the contact group is in contact with each other in place, is beneficial to embodying the simple and reliable plug-in connection of the contact group, realizes side-mounted output of a secondary contact group in a structure form of board rear plug-in connection through a signal wire and realizes a good compact effect in structure.

The task of the utility model is completed in this way, a draw-out switch comprises a switch body, a drawer seat, a switch body contact group arranged on the switch body and a drawer seat contact group fixed on the drawer seat, wherein the switch body contact group is inserted with the drawer seat contact group along with the movement of the switch body to the inside of the drawer seat, and the draw-out switch is characterized in that: the switch comprises a switch body and is characterized in that a mounting plate extending along the X direction of the moving direction of the switch body is arranged on the switch body, a fixing column is convexly arranged on the mounting plate, a limiting hole is further formed in the mounting plate, the fixing column extends along the Z direction perpendicular to the X direction, the limiting hole extends along the Y direction perpendicular to the X direction and the Z direction, and a mounting groove for accommodating the fixing column and a limiting boss for accommodating the limiting hole are formed in a contact group of the switch body.

In a specific embodiment of the present invention, the length of the limiting hole in the Y direction is greater than the length of the limiting boss, a spring is connected between each of the two ends of the limiting boss and the limiting hole, the spring is accommodated in the limiting hole, and the two springs are arranged in a straight line in the Y direction.

In another specific embodiment of the present invention, the width of the mounting groove in the Y direction is greater than the diameter of the fixing column.

In another specific embodiment of the present invention, the width of the mounting groove in the X direction is greater than the diameter of the fixing column, the width of the limiting hole in the X direction is greater than the thickness of the limiting boss, and the limit in the X direction of the switch body contact group is achieved by the cooperation of the bottom surface of the limiting boss and the inner wall of the limiting hole and the cooperation of the bottom wall of the mounting groove and the circumferential side surface of the fixing column.

In another specific embodiment of the present invention, the switch body contact group includes a signal plate, a housing and a connection terminal, a cavity for accommodating the signal plate is disposed in the housing, the signal plate is accommodated in the cavity, an opening communicated with the cavity and used for the drawer seat contact group to probe into and electrically connect to the signal plate is disposed at one end of the housing facing the drawer seat contact group, a notch communicated with the cavity is disposed at the other end of the housing, and the connection terminal is accommodated in the notch and electrically connected to the signal plate; the signal plate is provided with electric contact terminals distributed in a comb-tooth shape, the signal plate is provided with a group of exposed conducting strips arranged in parallel and a base part externally provided with an insulating coating, the drawer seat contact group is electrically connected with the conducting strips, and the wiring terminals are electrically connected with the base part; the drawer seat is provided with a bottom frame.

In another specific embodiment of the present invention, positioning grooves are respectively formed on two side inner walls of one end of the cavity, which is communicated with the notch, and a positioning protruding piece extends from each of two ends of the base, and is inserted into the positioning groove.

In a more specific embodiment of the present invention, the mounting grooves are respectively disposed at two sides of the notch, and the limit bosses are disposed at the side of the housing and correspond to between the opening and the notch.

In a further specific embodiment of the present invention, the drawer base contact set includes a housing and a signal plate, the signal plate has a base portion and a plurality of signal posts arranged in parallel, the signal posts are formed on the signal plate and the ends of the signal posts are formed as conductive contact piece fixing ends, conductive contact pieces are fixed on the conductive contact piece fixing ends, the conductive contact pieces include contact piece fixing portions corresponding to the size of the conductive contact piece fixing ends of the signal posts and contact piece fixing portions formed by bending the end portions of the contact piece fixing portions to electrically contact bending lugs, and the conductive contact pieces are fixed with the signal posts by fixing the contact piece fixing portions and the conductive contact piece fixing ends; the signal plate is a comb-shaped signal plate; when the drawer seat contact group is spliced with the switch body contact group, the signal plate is electrically contacted with the signal plate through the elastic deformation of the contact piece fixing part electrically contacting the bending lug.

In a further specific embodiment of the present invention, the casing includes a casing fixing seat and a casing inserting portion, the casing fixing seat is fixed to the chassis of the drawer seat, the casing inserting portion is inserted into the cavity of the casing of the switch body contact set through the opening to realize inserting fit with the switch body contact set, an inserting and accommodating cavity is formed in the inserting part of the shell, a group of small chamber partition plates are formed in the inserting and accommodating cavity at intervals, the space between every two adjacent small chamber partition plates is formed into a small chamber for accommodating the signal column, a butt-joint window communicated with the plug-in accommodation cavity is formed at one end of the shell facing the switch body contact group, when the drawer seat contact group is spliced with the switch body contact group, the conducting strip of the signal plate is inserted into the butt-joint window and is electrically contacted with the conducting strip.

In yet another specific embodiment of the present invention, the housing insertion part of the drawer base contact set has a pair of guiding posts respectively located at two sides of the housing insertion part and integrally formed with two ends of the housing fixing base, the height of the pair of guiding posts is greater than that of the housing insertion part, and a conical guiding head is respectively formed at one end of the pair of guiding posts away from the housing fixing base; and when the drawer seat contact group is contacted with the switch body contact group, the conical leading-in head is firstly contacted with the guide hole and is mutually matched.

The technical scheme provided by the utility model has the technical effects that: when the switch body is at the initial position before being plugged, the switch body contact group is suspended on the switch body relative to the mounting plate through the spring, so that the switch body contact group can slightly move and adjust in the Y-axis and Z-axis directions in the plugging process of the drawer seat contact group and the switch body contact group, and the plugging of the contact group is simple and reliable; the secondary contact group adopts a plate rear plug-in structure, namely the switch body contact group is arranged at the rear part of the switch body, the drawer seat contact group is arranged on the chassis of the drawer seat, and side-mounted output is realized through a signal wire, so that the draw-out type automatic change-over switch body has a good compact effect.

Drawings

Fig. 1 is a perspective view of the draw-out switch of the present invention.

Fig. 2 is a matching structure diagram of the mounting plate of the switch body, the switch body contact group, the chassis of the drawer base, and the drawer base contact group.

Fig. 3 is a top view of the chassis of the drawer base.

Fig. 4 is an assembly schematic diagram of a chassis of a drawer base, a stand-by power outlet row assembly and a stand-by power sampling harness.

Fig. 5a is a detailed structural view of the housing of the drawer base contact set shown in fig. 2 and 3.

Fig. 5b is a bottom schematic view of fig. 5 a.

Fig. 6a is a detailed structural view of a signal plate of the drawer base contact group shown in fig. 2 and 3.

Fig. 6b is a structural view of the conductive contact pad shown in fig. 6 a.

Fig. 7 is a perspective view of the switch body and the switch body contact group.

Fig. 8 is another side view of fig. 7.

Fig. 9 is an assembly view of the switch body operating mechanism, mounting plate and switch body contact set.

Fig. 10a is a perspective view of the switch body contact set shown in fig. 2.

Fig. 10b is a schematic view of fig. 10a viewed from the other side.

Fig. 11 is an assembly view of the terminal, housing and signal plate of the switch body contact set.

Fig. 12 is a schematic view of another embodiment of the signal plate shown in fig. 11.

Fig. 13a is a perspective view of the switch body contact set housing shown in fig. 2.

Fig. 13b is a perspective view of the switch body contact set housing shown in fig. 2 viewed from the bottom.

Fig. 14a is a schematic view of the drawer base contact set and the switch body contact set of fig. 2 both in the lead-in position.

Fig. 14b is a schematic view of the drawer base contact set and the switch body contact set of fig. 2 in a separated position.

Fig. 14c is a schematic view of both the drawer base contact set and the switch body contact set of fig. 2 in a testing position.

Fig. 14d is a schematic view of the drawer base contact set and the switch body contact set of fig. 2 in a connected position.

Detailed Description

Referring to fig. 1 to 3, and with reference to fig. 7, 9, 10a and 10b, a switch body 1, a drawer base 2, a switch body contact set 3 disposed on the switch body 1, and a drawer base contact set 4 fixed on the drawer base 2 are shown, wherein the switch body contact set 3 is inserted into the drawer base contact set 4 along with the movement of the switch body 1 into the drawer base 2.

The technical key points of the technical scheme provided by the utility model are as follows: the switch body 1 is provided with an installation plate 11 extending along the direction X of the switch body movement, i.e. the direction X of the in-out direction of the switch body 1, the installation plate 11 is provided with a fixing column 12 in a protruding manner and is further provided with a rectangular limiting hole 13, the fixing column 12 extends along the direction Z perpendicular to the direction X, i.e. the fixing column 12 is perpendicular to the plane of the installation plate 11 and extends along the direction Z, and the limiting hole 13 extends along the direction Y perpendicular to both the direction X and the direction Z, i.e. the length direction of the limiting hole 13 extends along the direction Y. The housing 31 of the switch body contact set 3 is provided with an installation groove 32 for accommodating the fixed column 12 and a limit boss 33 for accommodating the limit hole 13, that is, the limit boss 33 extends on the surface of the housing 31 facing the mounting plate 11 and is accommodated in the limit hole 13, and a spring 34 is respectively connected between the two ends of the limit boss 33 and the limit hole 13. The mounting groove 32 extends in the Z-axis direction, and a through hole is formed in the housing 31, and the switch body contact group 3 and the drawer base contact group 4 also extend in the X-axis direction.

As can be seen from the above figures and in combination with the common general knowledge, the drawer base contact set 4 is a male plug, and the switch body contact set 3 is a female plug. During the insertion process, a pair of guiding posts 414 (mentioned below) of the drawer base contact set 4 are engaged with a guiding hole 3112 (mentioned below) of the switch body contact set 3, so that the switch body contact set 3 can be slightly adjusted to achieve reliable insertion of the two.

The length dimension of the limiting hole 13 in the Y direction, i.e., the Y axis direction (the same applies hereinafter), is greater than the length dimension of the limiting boss 33 in the Y direction, i.e., the Y axis direction, so that the switch body contact set 3 can be slightly adjusted in the Y axis direction, and springs 34 (a pair of springs) are respectively hung between the two ends of the limiting boss 33 in the Y axis direction and the two inner walls of the limiting hole 13 in the Y axis direction. The pair of springs 34 are accommodated in the limiting hole 13 and arranged in a straight line in the Y direction, and the width of the mounting groove 32 in the Y direction is larger than the diameter of the fixing post 12. At the initial position that switch body contact group 3 has not been pegged graft with drawer seat contact group 4 yet, switch body contact group 3 sets up through the relative mounting panel 11 suspension of a pair of spring 34, and in the in-process of pegging graft with drawer seat contact group 4, switch body contact group 3 can slightly move the action adjustment in the Y axle direction.

As shown in fig. 1 to fig. 2 and fig. 9, the width of the mounting groove 32 in the Y direction is greater than the diameter of the fixed post 12, that is, the aperture of the mounting groove 32 is greater than the diameter of the fixed post 12, which also ensures that the switch body contact set 3 can be slightly adjusted in the Y axis direction during the insertion process with the drawer base contact set 4, so in this embodiment, two measures are taken to achieve the adjustment of the switch body contact set 3 in the Y axis direction, and of course, one of the measures can be selected to achieve the adjustment. The width of the limiting hole 13 in the X direction is greater than the thickness of the limiting boss 33, and the limiting in the X direction of the switch body contact group 3 is realized by the matching of the bottom surface 331 of the limiting boss 33 and the inner wall 131 of the limiting hole 13 and the matching of the bottom wall 321 of the mounting groove 32 and the circumferential side surface of the fixed column 12 in the X direction.

Continuing with fig. 9, after the fixed post 12 is received in the mounting slot 32, it can be reinforced at the end of the fixed post 12 by a washer, a screw or the like, wherein the outer diameter of the washer can be set larger than the bore diameter of the mounting slot 32, so that the switch body contact set 3 can also move slightly in the z-axis direction, i.e. the mounting slot 32 and the fixed post 12 can move relative to the z-axis direction, and the movement is limited by: the cooperation between the fastening member and the mounting groove 32, and the cooperation between the side wall surface of the switch body contact group 3 facing the mounting plate 11 and the mounting plate 11. In the plugging direction, i.e. in the x-axis direction of the switch body 1 in the drawer seat: the switch body contact group 3 and the drawer seat contact group 4 are limited in the inserting and matching process, and the bottom wall 321 of the installation groove 31 is matched with the circumferential side face of the fixed column 12; the limit is provided in the process of pulling out and separating the switch body contact group 3 and the drawer seat contact group 4, and the bottom surface 331 of the limit boss 33 is matched with the inner wall 131 of the limit hole 13.

Referring to fig. 1 to 4, since the switch body contact group 3 of the present invention is disposed at the rear of the switch body 1 and the drawer base contact group 4 is fixed to the rear wall chassis of the drawer base 2, space can be saved.

The drawer base 2 includes a pair of left and right side plates, a bottom plate provided with a screw drive, a top plate, and a base frame assembly located at a rear wall portion of the drawer base 2 and to be mentioned later. The chassis component is arranged on the back wall, namely the back surface, of the drawer seat, is formed by assembling an upper chassis 21 and a lower chassis 21 (a single chassis is shown in figure 4) with the same structure, and is fixed on the left side plate and the right side plate of the drawer seat through mounting bosses 22 on the two sides of the chassis 21. A common outlet line bank assembly 231 and a spare outlet line bank assembly 232, which are structural systems of the outlet line bank assembly 23 and are structurally identical to each other, are provided on the aforementioned upper chassis and at a position corresponding to the switch body main circuit insertion contact post, and a load outlet line bank assembly is provided on the aforementioned lower chassis and at a position corresponding to the switch body main circuit insertion contact post.

Referring to fig. 4, the chassis 21 is provided with cavities 24 for accommodating the outlet row assemblies 23, the cavities 24 of each pole are separated from each other by interphase partitions 241, and through slots 247 are provided between the cavities of the common, standby and load outlet rows and between the exhaust slots 242, so as to facilitate gas circulation and reduce temperature rise. The cavity 24 is further provided with a positioning column, a mounting hole and a fixing hole for positioning and mounting the outlet line bank. The common outlet sampling harness 2311 of the common outlet assembly 231 is led out from the exhaust slot 242 at the lower end of the chassis 21, and the spare outlet sampling harness 2321 of the spare outlet assembly 232 is led out from the exhaust slot 242 at the upper end of the chassis and converged to the corners of the top plate and the right side plate of the drawer seat. The top surface of the underframe is a valve plate structure installation surface, a fixed door plate installation boss is arranged on the installation surface, the fixed door plate is fixedly installed on the installation boss through a screw, and the valve plate is installed between the fixed door plate and the underframe installation surface. Between fixed door plant and the chassis installation face, set up the spout with fixed door plant installation boss matched with on the aforesaid valve board, make the valve board can the up-and-down translation slip.

The movable door plate structure comprises a fixed door plate and a movable door plate, wherein the fixed door plate and the movable door plate are respectively provided with a plug-in port corresponding to the wire outlet row assembly. The interface of fixed door plant with be qualified for the next round of competitions row one-to-one, the bayonet socket of activity door plant coincides with fixed door plant interface when opening, staggers with fixed door plant interface when closing, seals the interface of fixed door plant through the shutter board, is provided with shutter board drive groove near left side board and right side board department, its and left side board and the valve drive arrangement cooperation on the board of right side to realize that the switch is originally, 1 opens when inserting, closes when taking out switch body 1. And the same side of the fixed door plate and the movable door plate is provided with a chute avoiding the contact group.

From the above description it can be ascertained without doubt that: the contact group comprises two parts, namely a drawer seat contact group 4 and a switch body contact group 3, and is mainly used for outputting signals on the switch body 1, the position of the drawer seat contact group 4 on the chassis is close to the right side plate, the drawer seat contact group is positioned on the front back surface of the switch body 1 and is arranged in a vertical row, the plugging end of the drawer seat contact group extends out of a chute 211 of a shutter structure to be in butt joint with the switch body contact group 3, a signal wire 25 (shown in figure 3) on the drawer seat contact group 4 converges to the corner of a drawer seat top plate and the right side plate along the chassis surface, the common and standby sampling wire harnesses 2322 are arranged along the corner and are connected to an output signal terminal of the right side plate of the drawer seat, the signal terminal is fixed on the inner side of the right side plate through a partition plate, and the plugging end of the signal terminal penetrates through the right side plate and then extends outwards for being in butt joint with a controller cable.

Referring to fig. 8 to 13b, the switch body contact group 3 is mounted on a side plate at the back of the operating mechanism, that is, on the above-mentioned mounting plate 11 (shown in fig. 2), and is arranged longitudinally corresponding to the drawer seat contact group 4, the switch body contact group 3 includes a signal plate 38, a housing 31 (mentioned above), and a connection terminal 35, a cavity 311 for accommodating the signal plate 38 is provided in the housing 31, the signal plate 38 is accommodated in the cavity 311, an opening 312 communicated with the cavity 311 and used for the drawer seat contact group 4 to be inserted into and electrically connected with the signal plate 38 is provided at one end of the housing 31 facing the drawer seat contact group 4, a notch 313 communicated with the cavity 311 is provided at the other end of the housing 31, and the connection terminal 35 is accommodated in the notch 313 and electrically connected with the signal plate 38; the signal plate 38 is a comb-shaped signal plate, the signal plate 38 has a plurality of exposed conducting strips 381 arranged in parallel and a base 382 provided with an insulating coating, the drawer seat contact group 4 is electrically connected with the conducting strips 381, and the connecting terminal 35 is electrically connected with the base 382; the drawer base 2 has a chassis 21 as already mentioned above.

Positioning grooves 3111 (i.e., "signal plate mounting grooves") are respectively formed on both inner walls of one end of the receiving cavity 311 that penetrates the notch 313, and positioning tabs 3821 extend from both ends of the base 382, and the positioning tabs 3821 are fitted into the positioning grooves 3111. The mounting grooves 32 are respectively provided on both sides of the notch 313, the limit bosses 33 are provided on the side of the housing 31 corresponding to the space between the opening 312 and the notch 313, and spring engaging holes 332 are symmetrically provided on both sides of the limit bosses 33.

Referring to fig. 5a to 7, the drawer holder contact set 4 includes a housing 41 and a signal plate 42, the signal plate 42 has a base 422 and a plurality of signal posts 421 arranged in parallel, the signal posts 421 are formed on the signal plate 42 and the ends of the signal posts 421 are formed as conductive contact post fixing ends 4211, conductive contacts 43 are fixed on the conductive contact post fixing ends 4211, the conductive contacts 43 include contact post fixing portions 431 adapted to the size of the conductive contact post fixing ends 4211 of the signal posts 421 and contact post fixing portion electric contact bending ears 432 formed by bending the end portions of the contact post fixing portions 431, and the conductive contacts 43 and the signal posts 421 are fixed by fixing the contact post fixing portions 431 and the conductive fixing end contact posts 4211; the signal plate 42 is a comb-shaped signal plate; when the drawer seat contact set 4 is inserted into the switch body contact set 3, the signal plate 42 is electrically contacted with the signal plate 38 by the elastic deformation of the contact fixing portion electrically contacting the bent lug 432.

The housing 41 includes a housing fixing seat 411 and a housing insertion part 412, the housing fixing seat 411 is fixed to the chassis 21 of the drawer base 2, the housing insertion part 412 is inserted into the cavity 311 of the housing 31 of the switch body contact group 3 through the opening 312 to realize the insertion fit with the switch body contact group 3, the housing insertion part 412 is formed with an insertion accommodation cavity 4121, a group of cell partitions 41211 are formed in the insertion accommodation cavity 4121 at intervals, a space between two adjacent cell partitions 41211 is formed as a cell 41212 for accommodating the signal column 421, that is, a plurality of independent cells 41212 are uniformly divided by cell partitions 41211, a docking window 413 communicated with the insertion accommodation cavity 4121 is formed at one end of the housing 41 facing the switch body contact group 3, the bottom of each cell 41212 is communicated with the outside through the docking window 413, when the drawer base contact group 4 is inserted into the switch body contact group 3, the contact strip 381 of the signal plate 38 is inserted into the docking window 413 and electrically contacts the contact strip 381. The function of the guiding post 414 is: the preliminary guidance is performed when the signal plate 38 of the switch body contact group 3 of the switch body 1 is inserted into the mating window 413.

The housing mating part 412 of the drawer holder contact group 4 has a pair of guiding posts 414 and a pair of fixing screw mounting holes 416, the guiding posts 414 are respectively located at two sides of the housing mating part 412 and form an integral structure with two ends of the housing fixing seat 411, the height of the guiding posts 414 is greater than the height of the housing mating part 412, and a guiding angle is formed at one end of the guiding posts 414 away from the housing fixing seat 411, i.e. each guiding post is formed with a conical guiding head 4141 for facilitating the mating, the guiding holes 3112 are matched with the guiding posts 414 on the drawer holder contact group 4, so that the drawer holder contact group 4 reliably mates with the signal plate 38 and forms a comb shape, i.e. a plurality of signal posts 421 distributed in a comb shape are formed; a guide hole 3112 is formed on each of both sides of the receiving cavity 311 of the housing 31 of the switch body contact group 3, and when the drawer seat contact group 4 contacts the switch body contact group 3, the conical guide-in head 4141 contacts the guide hole 3112 first and is engaged with the guide hole 3112.

An opening 415 (shown in fig. 4 and 5 a) is formed at a side portion of one end of the housing 41 fixed to the chassis 21, the opening 415 is matched with the above-mentioned plug-in receiving cavity 4121, when the signal posts 421 of the signal plate 42 are installed in the small chamber 41212, a connecting bottom wall between the adjacent signal posts 421 is limited by a bottom end face 41213 of the small chamber partition plate 41211, and the above-mentioned signal wire 25 can be connected to a terminal portion of the base portion 422 (i.e., a "base portion") of the signal plate 42 through the opening 415, the terminal portion is an end portion with a wiring jack shown in fig. 6 a.

The contact fixing portion 431 is welded to the end of the signal post 421 (shown in fig. 6 a), and the contact fixing portion is a spring-shaped body made of conductive material, and the contact end of the spring-shaped body protrudes out of the mating window 413. The signal board 42 is clamped on the bottom end face 41213 of the chamber partition 41211 of the housing 41, and is fixed to the end face of the bottom chassis 21 by being limited near the end face of the contact piece and along with the housing 41, so that the base end face 4221 (shown in fig. 6 a) of the base 422 (i.e. the "base") of the signal board 42 is abutted against the bottom chassis limiting boss face 243 to prevent the signal board 42 from loosening during the plugging process, and meanwhile, the positioning post 417 shown in fig. 5b is matched with the positioning groove 244 shown in fig. 4, and a screw is screwed into a nut disposed in (i.e. sheathed in) the fixing screw mounting hole 416 after passing through the through hole 245 on the bottom chassis, thereby realizing the fixation of the drawer base contact group 4 and the bottom chassis 21.

Since the conductive layer is provided on the surface of the signal post 421 facing the conductive contact piece 43 of the drawer base contact group 4, the signal of the switch main body 1 is output through the conductive layer when the conductive contact piece 43 contacts the signal post 421 of the switch main body 1. The notches between the signal posts 421 are used to clear the compartment divider 41211 on the drawer base contact set housing. The signal plate 38 is further provided with a connection terminal 35, the contact end of the signal plate 38 passes through the positioning groove 3111 inside the cavity 311 and then is exposed out of the housing 31, the base 382 of the signal plate 38 is exposed out of the housing 31 through the notch 313, meanwhile, the connection terminal 35 is accommodated in the notch 313, and a connection needle on the connection terminal 35 is inserted into the base 382 and welded to be connected with a conductive wire in the base 382, so that each end of the connection terminal 35 is respectively provided with a signal post on the signal plate to be correspondingly electrically connected with the signal post. After the terminal 35 is fixed, the signal plate 38 is fixed to the housing 31 because the terminal surface is engaged with the surface on the notch 313.

Referring to fig. 14a to 14d and referring to fig. 1, in order to realize the position signal transmission of the switch body 1 during the insertion process of the switch body 1 and the drawer base 2, a drawer base three-position signal column 300 is disposed on one of the signal plates of the switch body contact group 3, the three-position signal column 300 is higher than other signal columns (may be the same height, but the copper-clad layer on the surface, i.e. the conductive area, has a short length or is provided with signal columns 421 with different lengths), the three-position signal columns 300 are four in total, which are respectively a separation position trigger signal column 301, a test position trigger signal column 302, a connection position trigger signal column 303 and a common signal column 304, which are respectively matched with the switch position, so that the lengths of the conductive layers thereon are different, wherein the conductive layer on the common end is a full coating. When the switch body enters the separation position, the corresponding contact piece on the drawer seat is contacted with the conductive layer on the separation signal column on the switch body to output a separation signal, and at the moment, no conductive layer exists on the test signal column and the connection signal column, so that no test position signal and no connection position signal exist; when the switch body enters a test position, the corresponding contact piece of the drawer seat is contacted with the conductive layer on the test signal column to output a test position signal, and at the moment, the separation signal column and the connection signal column are not provided with conductive layers, so that the separation position signal and the connection position signal are not generated; when the switch body enters the connecting position, the corresponding contact piece of the drawer seat is contacted with the conductive layer on the connecting signal column, a connecting position signal is output, and at the moment, the separating signal column and the test signal column are not provided with the conductive layers, so that no separating position signal and no test position signal exist.

In conclusion, the technical scheme provided by the utility model overcomes the defects in the prior art, successfully completes the utility model task and faithfully realizes the technical effects listed in the technical effect column by the applicant.

Claims (10)

1. The utility model provides a draw-out switch, includes switch body (1), drawer seat (2), sets up switch body contact group (3) on switch body (1) and fixes drawer seat contact group (4) on drawer seat (2), switch body contact group (3) along with switch body (1) to the inside removal of drawer seat (2) and with drawer seat contact group (4) peg graft, its characterized in that: the switch comprises a switch body (1), and is characterized in that a mounting plate (11) extending along the X direction of the movement direction of the switch body is arranged on the switch body (1), a fixing column (12) is convexly arranged on the mounting plate (11), a limiting hole (13) is further formed in the mounting plate, the fixing column (12) extends along the Z direction perpendicular to the X direction, the limiting hole (13) extends along the Y direction perpendicular to the X direction and the Z direction, and a mounting groove (32) accommodating the fixing column (12) and a limiting boss (33) accommodating the limiting hole (13) are formed in the switch body contact group (3).

2. The draw-out switch according to claim 1, wherein the length of the limiting hole (13) in the Y direction is greater than the length of the limiting boss (33), a spring (34) is connected between each end of the limiting boss (33) and the limiting hole (13), the springs (34) are accommodated in the limiting hole (13) and are arranged in a straight line in the Y direction.

3. The draw out switch of claim 1, wherein said mounting slot (32) has a width in said Y direction greater than the diameter of said fixed post (12).

4. The draw-out switch according to claim 1, wherein the width of the mounting groove (32) in the X direction is larger than the diameter of the fixing post (12), the width of the limiting hole (13) in the X direction is larger than the thickness of the limiting boss (33), and the limitation in the X direction of the switch body contact group (3) is achieved by the cooperation of the bottom surface (331) of the limiting boss (33) and the inner wall (131) of the limiting hole (13) and the cooperation of the bottom wall (321) of the mounting groove (32) and the circumferential side surface of the fixing post (12).

5. The withdrawable switch according to claim 1, characterized in that the switch body contact group (3) comprises a signal plate (38), a housing (31) and a connection terminal (35), a cavity (311) for accommodating the signal plate (38) is arranged in the housing (31), the signal plate (38) is accommodated in the cavity (311), an opening (312) which is communicated with the cavity (311) and is used for the drawer seat contact group (4) to be inserted into and electrically connected with the signal plate (38) is arranged at one end of the housing (31) facing the drawer seat contact group (4), a notch (313) which is communicated with the cavity (311) is arranged at the other end of the housing (31), and the connection terminal (35) is accommodated in the notch (313) and electrically connected with the signal plate (38); the signal plate (38) is an electric contact terminal with a comb-tooth-shaped distribution, the signal plate (38) is provided with a group of exposed conducting strips (381) arranged in parallel and a base (382) externally provided with an insulating coating, the drawer seat contact group (4) is electrically connected with the conducting strips (381), and the connecting terminal (35) is electrically connected with the base (382); the drawer base (2) is provided with a bottom frame (21).

6. The draw-out switch according to claim 5, wherein a positioning groove (3111) is provided on each of two side inner walls of one end of the cavity (311) penetrating the notch (313), a positioning lug (3821) extends from each of two ends of the base (382), and the positioning lug (3821) is inserted into the positioning groove (3111).

7. The draw-out switch according to claim 5, characterized in that the mounting slots (32) are provided on both sides of the notch (313), the limit projection (33) being provided on the side of the housing (31) and corresponding between the opening (312) and the notch (313).

8. The withdrawable switch according to claim 5, characterized in that the drawer base contact group (4) comprises a housing (41) and a signal plate (42), the signal plate (42) has a base part (422) and a plurality of signal posts (421) arranged in parallel, the signal posts (421) are formed on the signal plate (42) and the ends of the signal posts (421) are formed as conductive contact piece fixing ends (4211), a conductive contact piece (43) is fixed to the conductive contact piece fixing end (4211), the conductive contact (43) comprises a contact fixing part (431) corresponding to the size of the conductive contact fixing end (4211) of the signal post (421) and a contact fixing part electric contact bending lug (432) formed by bending the end part of the contact fixing part (431), and the conductive contact (43) and the signal post (421) are fixed by the fixation of the contact fixing part (431) and the conductive contact fixing end (4211); the signal plate (42) is a comb-shaped signal plate; when the drawer seat contact group (4) is inserted into the switch body contact group (3), the signal plate (42) is electrically contacted with the signal plate (38) through the elastic deformation of the contact piece fixing part electrically contacting the bending lug (432).

9. The withdrawable switch according to claim 8, characterized in that the housing (41) comprises a housing holder (411) and a housing plug-in part (412), the housing holder (411) being fixed to the base frame (21) of the drawer base (2), the housing plug-in part (412) being plugged into the receptacle (311) of the housing (31) of the switch body contact group (3) via the opening (312) into a plug-in fit with the switch body contact group (3), a plug-in receiving chamber (4121) being formed in the housing plug-in part (412), a group of cell dividers (41211) being formed in the plug-in receiving chamber (4121) in a spaced-apart condition, the space between two adjacent cell dividers (41211) being formed as a cell (41212) for receiving the signal column (421), a docking window (413) being formed in the housing (41) at the end facing the switch body contact group (3) in communication with the plug-in receiving chamber (4121), when the drawer seat contact group (4) is connected with the switch body contact group (3) in an inserting mode, the butt joint window (413) is used for the conducting strip (381) of the signal plate (38) to penetrate into and electrically contact with the conducting strip (381).

10. The draw-out switch according to claim 9, wherein the housing insertion part (412) of the drawer base contact set (4) has a pair of guide posts (414), the guide posts (414) are respectively located at two sides of the housing insertion part (412) and form an integral structure with two ends of the housing fixing base (411), the height of the guide posts (414) is greater than that of the housing insertion part (412), and a conical lead-in head (4141) is respectively formed at one end parts of the guide posts (414) far away from the housing fixing base (411); two sides of the containing cavity (311) of the shell (31) of the switch body contact group (3) are respectively provided with a guide hole (3112), and when the drawer seat contact group (4) is in contact with the switch body contact group (3), the conical guide-in heads (4141) are firstly in contact with the guide holes (3112) and are matched with each other.

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