CN210723925U - Push-switch interlocking mechanism for push-pull drawer - Google Patents

Abstract

The utility model discloses a propulsion switching-on interlocking mechanism for a push-pull type drawer, which comprises a mounting substrate, a switching-on interlocking unit and a matching locking display triggering unit arranged below the mounting substrate; the mounting substrate is provided with a drawer locking unit, a position display unit and a position auxiliary contact unit; in the process of pushing the drawer, the drawer locking unit realizes the locking or unlocking of the drawer in different position states under the matching of the matching locking display triggering unit, the position display unit displays the different position states of the drawer under the matching of the matching locking display triggering unit, and the position auxiliary contact unit triggers auxiliary contacts corresponding to the different position states under the matching of the matching locking display triggering unit; the closing interlocking unit is used for locking/unlocking the drawer locking unit while the switch is closed/opened. The utility model discloses simple structure is with low costs, integrate the degree height, be convenient for installation and debugging and safe and reliable more.

Description

Push-switch interlocking mechanism for push-pull drawer

Technical Field

The utility model belongs to the technical field of electrical control, especially, relate to an impel combined floodgate interlocking device for plug-type drawer.

Background

The low-voltage draw-out switch complete equipment is widely applied, and the core component of the low-voltage draw-out switch complete equipment is a unit drawer provided with electrical elements (all the electrical elements can be connected to form an auxiliary circuit and a strong circuit).

The push interlocking mechanism used in the existing unit drawer is mainly of a hand-pulling type, and the mechanism has the following defects in practical application: firstly, a locking unit and an interlocking unit in the mechanism are split, so that inconvenience is brought to the assembly and debugging of complete equipment; secondly, due to the limitation of a design structure, an auxiliary contact of the mechanism can only be arranged at one of three positions of test, connection and electric operation and cannot be arranged at the same time; the drawer cannot be accurately locked at different positions, so that the drawer is not suitable for the market; furthermore, the locking and unlocking of the mechanism are mainly realized through pin shafts riveted on the steel sheets, and as the unit drawer has large impact force when being pushed and pulled, the riveted points of the pin shafts are easy to loosen, so that the whole unit drawer is locked to fail, the position of the drawer cannot be accurately positioned and locked, and safety accidents are easy to cause.

In view of this, it is needed to improve the prior art, and to develop and design a propulsion switching-on interlocking mechanism which has a simple structure, is convenient to install and debug, can lock the drawer at different positions to realize corresponding testing, connecting and switching-on functions, and is safe and reliable.

SUMMERY OF THE UTILITY MODEL

Aim at overcoming the not enough of existence among the above-mentioned prior art, the utility model provides a technical problem be, provide a simple structure, be convenient for installation and debugging, can lock the drawer in order to realize corresponding experiment, connection and combined floodgate function and safe and reliable's propulsion combined floodgate interlocking device under the different positions.

The utility model provides a technical scheme that above-mentioned technical problem adopted is: a propulsion switching-on interlocking mechanism for a push-pull drawer comprises a mounting substrate, a switching-on interlocking unit and a matching locking display triggering unit arranged below the mounting substrate;

the mounting substrate is provided with a drawer locking unit, a position display unit and a position auxiliary contact unit; in the process of pushing the drawer, the drawer locking unit realizes the locking or unlocking of the drawer in different position states under the coordination of the coordination locking display triggering unit, the position display unit displays the different position states of the drawer under the coordination of the coordination locking display triggering unit, and the position auxiliary contact unit triggers auxiliary contacts corresponding to the different position states under the coordination of the coordination locking display triggering unit;

the closing interlocking unit is used for locking/unlocking the drawer locking unit while the switch is closed/opened.

Furthermore, the drawer locking unit comprises a support frame fixed with the mounting substrate, a pushing assembly slidably mounted on the support frame along the push-pull direction, a locking assembly slidably mounted on the support frame along the vertical direction, and a guide rod fixedly connected with the locking assembly and extending out of the support frame, wherein a first oblong hole which is matched with the guide rod and extends vertically is formed in the support frame;

the pushing assembly is matched with the guide rod to enable the locking assembly to move vertically, and the drawer is locked or unlocked under the matching of the matching locking display trigger unit.

Further, the propulsion assembly includes a propulsion plate, an extended propulsion plate, and a first spring; the pushing plate comprises a first plate part, a second plate part and a connecting part which are sequentially connected, and a step surface is formed at the connecting part of the first plate part and the second plate part; the first spring is sleeved on the first plate part, one end of the first spring abuts against the step surface, and the other end of the first spring abuts against the support frame; the top of the second plate part is provided with a trapezoidal notch matched with the guide rod, and the second plate part is provided with a first end face or a positioning jack matched with the switching-on interlocking unit; a second oblong hole extending along the push-pull direction is formed in the second plate part, and a limit screw matched with the second oblong hole is arranged on the support frame; the connecting part is connected with the extension propelling plate, and the extension propelling plate extends out of the vertical plate part of the mounting base plate;

the locking assembly comprises a locking plate and a second spring which are stepped; the second spring is sleeved on the small-diameter end of the locking plate, one end of the second spring abuts against the step surface of the locking plate, and the other end of the second spring abuts against the supporting frame; the guide rod is vertically and fixedly connected with the large-diameter end of the locking plate, and the large-diameter end of the locking plate extends out of the transverse plate part of the mounting base plate and is used for being matched with the matching locking display trigger unit to realize the locking of the drawer;

when the pushing plate is pushed, the locking plate is forced to move upwards by the trapezoid notch so as to be separated from the matching of the matching locking display trigger unit, and the drawer is unlocked.

Further, the closing interlocking unit includes an electric closing auxiliary contact unit or a manual closing interlocking unit.

Further, the electric switching-on auxiliary contact unit comprises a first switch mounting seat arranged on the mounting substrate or at the bottom of the drawer, a switching-on auxiliary switch arranged on the first switch mounting seat, and a spring piece arranged on the switching-on auxiliary switch; the elastic sheet corresponds to a closing auxiliary contact of the closing auxiliary switch;

when the drawer is locked, the first end face of the pushing plate forces the elastic sheet to generate elastic deformation to trigger the auxiliary closing contact, and linkage closing is realized; when the drawer is unlocked, the first end face of the pushing plate is separated from the elastic sheet, the elastic sheet resets and is separated from the auxiliary closing contact, and linkage opening is achieved.

Further, the manual switching-on interlocking unit comprises an installation plate, a switching-on linkage structure, an interlocking plate and an interlocking plate;

the installation plate is installed on the installation base plate, the closing linkage structure is rotatably installed on the rear end face of the installation plate, and one end of the closing linkage structure is movably connected with the locking plate and used for driving the locking plate to do vertical reciprocating linear motion on the installation plate; the interlocking plate is rotatably arranged on the front end face of the mounting plate, one end of the interlocking plate is provided with an inserting part, and the other end of the interlocking plate is movably connected with the locking plate and is used for swinging under the driving of the locking plate;

after the drawer is locked, the closing linkage structure is manually rotated, and linkage closing is realized when the insertion part is inserted into the positioning insertion hole; before the drawer is unlocked, the closing linkage structure is manually rotated, and linkage opening is realized when the insertion part is separated from the positioning insertion hole.

Furthermore, the other end of the interlocking plate is provided with a guide hole, the mounting plate is provided with a vertical guide hole, a connecting piece is slidably arranged in the guide hole, and one end of the connecting piece penetrates through the vertical guide hole to be fixedly connected with the locking plate, so that the interlocking plate is movably connected with the locking plate;

the closing linkage structure comprises a cylindrical body rotatably mounted on the mounting plate, a mounting part extending radially outwards is arranged on the cylindrical body, a limiting column is arranged on the mounting part, a third long circular hole is formed in a bending part of the locking plate, and the limiting column is matched with the third long circular hole to realize movable connection of the closing linkage structure and the locking plate;

be provided with on the mounting panel and be used for dodging advancing the mouth of dodging of board, the bottom of mounting panel is provided with the fixed part of bending, bend the fixed part with mounting substrate corresponds position department and all is equipped with the fixed mounting hole and is used for dodging the hole of dodging of shut-off plate.

Further, the position display unit includes a position display panel, a rotation shaft, a rotation push plate, a collision pin, and a torsion spring;

the position display panel is slidably mounted on the mounting substrate, the rotating shaft is fixed on the mounting substrate, the rotating push plate is rotatably mounted on the mounting substrate by virtue of the rotating shaft, one end of the rotating push plate is movably connected with the position display panel and is used for driving the position display panel to do transverse reciprocating linear motion on the mounting substrate, and the other end of the rotating push plate is provided with a collision pin; the torsion spring is sleeved on the rotating shaft, one torsion arm is fixedly connected with the mounting substrate, and the other torsion arm is fixedly connected with the collision pin; the mounting substrate is provided with an arc-shaped hole matched with the collision pin;

the mounting substrate is provided with a transverse limiting hole, the rotary push plate is provided with a fourth oblong hole, a connecting piece is arranged in the transverse limiting hole in a sliding mode, and one end of the connecting piece penetrates out of the fourth oblong hole to be fixedly connected with the position display plate, so that the rotary push plate is movably connected with the position display plate.

Furthermore, a protective cover for protecting the drawer locking unit and the position display unit is arranged on the mounting substrate, and two mounting cavities extending towards the direction of the mounting substrate are arranged in the protective cover;

the position auxiliary contact unit comprises a second switch seat and a third switch seat which are arranged on the protective cover and are arranged at intervals along the push-pull direction, a test position auxiliary switch is arranged on the second switch seat, a connection position auxiliary switch is arranged on the third switch seat, and guide parts with openings facing the corresponding auxiliary contacts are arranged on the second switch seat and the third switch seat;

a trigger column is arranged in the mounting cavity in a sliding manner, a third spring is sleeved on the trigger column, one end of the third spring abuts against the step surface of the trigger column, and the other end of the third spring abuts against the bottom end of the guide part; the top end of the trigger column penetrates through the protective cover and extends into the guide part, and the bottom end of the trigger column extends out of the mounting substrate; and the top end of the trigger column is provided with a trigger inclined plane for triggering the auxiliary contact.

Further, the cooperation locking display triggering unit is fixedly arranged on the cabinet body frame below the drawer and comprises a pushing positioning block;

a slope surface, a first locking hole and a second locking hole are arranged on the pushing and pulling positioning block at intervals along the pushing and pulling direction; the first locking hole and the second locking hole are matched with the locking plate and used for realizing the locking or unlocking of the drawer in different position states;

the pushing positioning block is provided with a groove extending along the pushing and pulling direction, the bottom of the groove is provided with a trapezoidal bump, and the trapezoidal bump is used for enabling the triggering column to move up and down to trigger the corresponding auxiliary contact;

a first pushing inclined plane and a second pushing inclined plane are arranged at one side part of the pushing positioning block and are matched with the collision pin to display different position states;

the first locking hole corresponds to the first pushing inclined plane, the second locking hole corresponds to the second pushing inclined plane, and the trapezoidal lug corresponds to the second locking hole.

Due to the adoption of the technical scheme, the beneficial effects are as follows:

the utility model discloses a propulsion switching-on interlocking mechanism, which comprises a mounting substrate, a switching-on interlocking unit and a matching locking display triggering unit arranged below the mounting substrate; the mounting base plate is used for being mounted in the drawer and fixed with the bottom of the drawer, and the matching locking display trigger unit is fixed on the cabinet body frame below the drawer. The mounting substrate is provided with a drawer locking unit, a position display unit and a position auxiliary contact unit; in the process of pushing the drawer, the drawer locking unit realizes the locking or unlocking of the drawer in different position states under the matching of the matching locking display triggering unit, the position display unit displays the different position states of the drawer under the matching of the matching locking display triggering unit, and the position auxiliary contact unit triggers auxiliary contacts (test and connection) corresponding to the different position states under the matching of the matching locking display triggering unit; the closing interlocking unit is used for locking/unlocking the drawer locking unit while the switch is closed/opened.

The utility model can lock the drawer at different positions to realize corresponding testing, connecting and closing functions, thereby improving the integration degree, increasing the universality and facilitating the installation and debugging of the matched equipment; the display trigger unit and the drawer locking unit are matched to realize accurate locking of different position states, and compared with the technical scheme of utilizing the pin shaft in the prior art, the locking device is safer and more reliable.

To sum up, the utility model discloses simple structure is with low costs, integrate the degree height, be convenient for installation and debugging and safe and reliable more.

Drawings

Fig. 1 is a schematic structural view of a first embodiment of a propulsion switching-on interlocking mechanism of the present invention;

FIG. 2 is a side view of FIG. 1;

FIG. 3 is an exploded view of the structure of FIG. 1;

fig. 4 is a reference view showing a state of engagement of the drawer locking unit, the position display unit and the position auxiliary contact unit with the engagement locking display triggering unit in fig. 3;

FIG. 5 is a schematic structural view of the drawer locking unit of FIG. 3;

FIG. 6 is a schematic view of the drawer lock unit of FIG. 3 from another perspective;

FIG. 7 is an exploded view of the structure of FIG. 5;

FIG. 8 is a schematic structural diagram of the position display unit shown in FIG. 3;

FIG. 9 is a partial cross-sectional view of FIG. 2;

fig. 10 is an exploded view of the position auxiliary contact unit of fig. 3;

fig. 11 is a schematic structural diagram of the manual closing interlock unit in fig. 3;

FIG. 12 is an exploded view of the structure of FIG. 11;

fig. 13 is a schematic structural view of a second embodiment of a propulsion switching-on interlocking mechanism of the present invention;

FIG. 14 is an exploded view of the structure of FIG. 13;

in the figure, 1-mounting base plate, 11-horizontal plate portion, 111-fixing mounting hole, 112-avoiding hole, 113-arc hole, 114-notch, 115-locking plate avoiding hole, 116-horizontal limiting hole, 12-vertical plate portion, 121-horizontal limiting hole, 122-pushing plate avoiding hole, 2-drawer locking unit, 21-supporting frame, 211-back plate, 2111-first oblong hole, 2112-limiting screw, 212-top plate, 2121-first square hole, 213-bottom plate, 2131-second square hole, 2132-mounting hole, 214-side plate, 2141-third square hole, 215-side plate, 2151-fourth square hole, 22-pushing assembly, 221-pushing plate, 2211-first plate portion, 2212-second plate portion, 2213-connecting portion, 2214-step face, 2215-trapezoidal notch, 2216-first end face, 2217-positioning insertion hole, 2218-second oblong hole, 222-extension pushing plate, 223-first spring, 23-locking assembly, 231-locking plate, 2311-step face, 232-second spring, 24-guide bar, 3-position display unit, 31-position display plate, 311-fixing screw, 312-position signboard, 313-horizontal plate portion, 3131-threaded hole, 314-vertical plate portion, 32-rotation shaft, 33-rotation pushing plate, 331-fourth oblong hole, 34-collision pin, 35-torsion spring, 36-connection screw, 4-position auxiliary contact unit, 41-second switch seat, 411-guide portion, 42-third switch seat, 421-a guide part, 43-a test position auxiliary switch, 431-an auxiliary contact, 44-a connection position auxiliary switch, 441-an auxiliary contact, 45-a trigger column, 451-a step surface, 452-a trigger inclined surface, 46-a third spring, 5-a closing interlocking unit, 51-an electric closing auxiliary contact unit, 511-a first switch mounting seat, 512-a closing auxiliary switch, 513-a spring sheet, 514-a closing auxiliary contact, 52-a manual closing interlocking unit, 521-a mounting plate, 5211-a vertical guide hole, 5212-an avoidance hole, 5213-a bending fixing part, 5214-a fixing mounting hole, 5215-an avoidance hole, 5216-a fixing screw, 522-a closing linkage structure, 5221-a cylindrical body and 5222-a mounting part, 5223-limiting column, 523-locking plate, 5231-bending part, 5232-third oblong hole, 5233-threaded hole, 524-interlocking plate, 5241-inserting part, 5242-guide hole, 525-connecting screw, 6-matching locking display trigger unit, 61-pushing positioning block, 62-slope surface, 63-first locking hole, 64-second locking hole, 65-groove, 66-trapezoidal lug, 67-first pushing slope surface, 68-second pushing slope surface, 7-protective cover, 71-mounting cavity, 72-first avoiding hole, 73-first avoiding opening, a-slope surface and b-rotating mounting position.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the orientation or position relationship described in the present invention as "horizontal", vertical "," front "," back ", etc. is based on the orientation and position relationship in the installation and use state, and is only for the convenience of simplifying the description, and should not be construed as limiting the present invention.

The first embodiment is as follows:

as shown in fig. 1 to 4, the pushing and closing interlocking mechanism for a push-pull drawer disclosed in the present embodiment includes a mounting substrate 1, a closing interlocking unit 5, and a cooperating locking display trigger unit 6 disposed below the mounting substrate 1; the mounting substrate 1 is provided with a drawer lock unit 2, a position display unit 3, and a position auxiliary contact unit 4. The mounting substrate 1 is mounted inside the drawer and fixedly connected with the bottom of the drawer, and the closing interlocking unit 5 can be mounted at the bottom of the drawer or mounted on the mounting substrate 1; the matching locking display trigger unit 6 is arranged on the cabinet body frame below the drawer; that is, the mounting substrate 1 and the units on the mounting substrate 1 are integrally movable members, and the display trigger unit 6 is a stationary member in cooperation with the drawer moving in the drawing direction. In the process of pushing the drawer, the drawer locking unit 2 is matched with the locking display trigger unit 6 to realize the locking or unlocking of the drawer in different position states. Meanwhile, the position display unit 3 displays different position states of the drawer in cooperation with the locking display triggering unit 6. Meanwhile, the position auxiliary contact unit 4 triggers the auxiliary contacts 431 and 441 (shown in fig. 10) corresponding to different position states in cooperation with the cooperation locking display trigger unit 6; the closing interlock unit 5 is mechanically connected (linked) to a switch (circuit breaker) for closing, and is used to lock/unlock the drawer locking unit 2 while closing/opening the switch. The arrangement of the circuit breaker is well known to those skilled in the art and will not be described in detail here.

A protective cover 7 for protecting the drawer locking unit 2 and the position display unit 3 is arranged on the mounting substrate 1, and two mounting cavities 71 (shown in fig. 9) extending towards the mounting substrate 1 are arranged inside the protective cover 7; the top is provided with a first avoidance hole 72, the front side is provided with a first avoidance port 73, and the rear side is provided with a second avoidance port (not shown in the figure by being blocked).

As shown in fig. 5 to 7, in the present embodiment, the drawer locking unit 2 includes a supporting frame 21 fixed to the mounting substrate 1, a pushing assembly 22 slidably mounted on the supporting frame 21 along a pushing and pulling direction (longitudinal direction), a locking assembly 23 slidably mounted on the supporting frame 21 along a vertical direction, and a guiding rod 24 fixedly connected to the locking assembly 23 and extending out of the supporting frame 21, and the supporting frame 21 is provided with a first elongated circular hole 2111 adapted to the guiding rod 24 and extending vertically.

The support frame 21 is located inside the protective cover 7, and has a specific implementation structure of a frame structure formed by connecting a back plate 211, a top plate 212, a bottom plate 213 and two side plates 214 and 215, and the first oblong hole 2111 is arranged on the back plate 211; the bottom plate 213 is provided with a mounting hole 2132 for fixing to the mounting substrate 1.

The propulsion assembly 22 is embodied in a structure that the propulsion assembly 22 comprises a propulsion plate 221, an extension propulsion plate 222 and a first spring 223; the pushing plate 221 includes a first plate portion 2211, a second plate portion 2212 and a connecting portion 2213 sequentially connected to each other (the end portion of the second plate portion 2212 is bent by 90 degrees to form the connecting portion 2213), and a third hole 2141 and a fourth hole 2151 respectively disposed on the two side plates 214, 215 of the supporting frame 21 and adapted to the first plate portion 2211 and the second plate portion 2212 (the third hole 2141 and the fourth hole 2151 respectively correspond to the first avoiding opening 73 and the second avoiding opening of the protecting cover 7). A step surface 2214 is formed at the joint of the first plate portion 2211 and the second plate portion 2212; the first spring 223 is sleeved on the first plate portion 2211, and one end of the first spring is abutted against the step surface 2214, and the other end of the first spring is abutted against the inner wall of the side plate 214 of the support frame 21; the top of the second plate portion 2212 is provided with a trapezoidal notch 2215 adapted to the guide bar 24, and the second plate portion 2213 is provided with a first end face 2216 or a positioning insertion hole 2217 adapted to the closing interlocking unit 5; a second oblong hole 2218 extending in the push-pull direction (longitudinal direction) is formed in the second plate portion 2212, and a limit screw 2112 matched with the second oblong hole 2218 is formed in the back plate 211 of the support frame 21; the connecting portion 2213 is connected with the bending portion of the extension pushing plate 222 (by welding or by means of a fastener thread), and the extension pushing plate 222 extends out of the vertical plate portion 12 of the mounting substrate 1 through the pushing plate avoiding opening 122 on the vertical plate portion 12, even out of the drawer door, so that the operation is convenient, and the unlocking of the drawer is realized; alternatively, the extension pushing plate 222 may be omitted, and the end of the second plate portion 2212 of the pushing plate 221 may be bent and extended out of the vertical plate portion 12, or even out of the drawer door.

The specific implementation structure of the locking assembly 23 is as follows: the locking assembly 23 includes a locking plate 231 and a second spring 232 which are stepped; the second spring 232 is sleeved on the small-diameter end of the locking plate 231, and one end of the second spring abuts against the step surface 2311 of the locking plate 231, and the other end of the second spring abuts against the inner wall of the top plate 212 of the support frame 21; the top plate 212 of the supporting frame 21 is provided with a first square hole 2121 (and the first avoiding hole 72 of the protecting cover 7) adapted to the small diameter end of the corresponding locking plate 231, and the bottom plate 213 of the supporting frame 21 is provided with a second square hole 2131 adapted to the large diameter end of the locking plate 231. The guide bar 24 is vertically and fixedly connected to the large-diameter end of the locking plate 231, and the large-diameter end of the locking plate 231 extends out of the lateral plate 11 of the mounting substrate 1 through the locking plate avoiding hole 115 on the lateral plate 11 to be engaged with the engagement lock display trigger unit 6 (shown in fig. 4, the slope 62, the first locking hole 63, and the second locking hole 64).

When the push plate 221 is pushed, the trapezoidal notch 2215 forces the lock plate 231 to move upward away from the slope a of the first plate portion 2211, out of engagement with the lock display trigger unit 6 (the first lock hole 63 and the second lock hole 64, shown in fig. 4), and unlocking of the drawer is achieved.

As collectively shown in fig. 1, 3, 4 and 8, in the present embodiment, the position display unit 3 includes a position display plate 31, a rotation shaft 32, a rotation push plate 33, an impact pin 34 and a torsion spring 35; the position display board 31 is transversely installed on the installation base board 1 in a sliding mode, the rotating shaft 32 is fixed on the transverse board part 11 of the installation base board 1, the rotating push plate 33 is rotatably installed on the transverse board part 11 of the installation base board 1 through the rotating shaft 32, one end of the rotating push plate 33 is movably connected with one end of the horizontal board part 313 of the position display board 31 and used for driving the position display board 31 to integrally do transverse reciprocating linear motion on the installation base board 1, and the other end of the rotating push plate 33 is provided with a collision pin 34; the torsion spring 35 is sleeved on the rotating shaft 32, one torsion arm is fixedly connected with the transverse plate part 11 of the mounting substrate 1 (the fixation is realized by the jack on the transverse plate part 11), and the other torsion arm is fixedly connected with the collision pin 34 (the fixation is realized by the compression of a nut and a gasket); the lateral plate portion 11 of the mounting substrate 1 is provided with an arc-shaped hole 113 adapted to the collision pin 34; the collision pin 34 protrudes out of the lateral plate portion 11 of the mounting substrate 1 through the arc-shaped hole 113 to be engaged with the engagement locking display triggering unit 6 (the first pushing inclined surface 67 and the second pushing inclined surface 68), thereby realizing display of different position states.

The specific implementation structure of converting the rotation of the rotary push plate 33 around the rotary shaft 32 into the transverse reciprocating linear motion of the position display plate 31 is as follows:

the lateral plate 11 and the vertical plate 12 of the mounting substrate 1 are respectively provided with lateral position-limiting holes 116 and 121, the vertical plate 314 of the position display plate 31 is provided with a fixing screw 311, and the fixing screw 311 slides in the lateral position-limiting hole 121. And a position signboard 312 (three signs: disconnection, test, connection) is provided on the vertical plate portion 314 of the position display panel 31. The rotary push plate 33 is provided with a fourth oblong hole 331, a connecting piece (a connecting screw 36 or a step rivet) is slidably installed in the transverse limiting hole 116, and one end of the connecting piece penetrates through the fourth oblong hole 331 to be fixedly connected with the position display plate 31 (by means of threaded connection with a threaded hole 3131 matched with the connecting screw 36 or by means of optical hole connection matched with the step rivet) so as to realize movable connection between the rotary push plate 33 and the position display plate 31, and the rotation of the rotary push plate 33 is converted into transverse linear motion of the position display plate 31.

As shown in fig. 1, 3, 4, 9 and 10, in this embodiment, the position auxiliary contact unit 4 includes a second switch base 41 and a third switch base 42 (the spacing positions of the two switch bases need to correspond to two locking positions of the drawer) that are disposed on the protective cover 7 (or on the mounting base 1) and are arranged at intervals along the push-pull direction (longitudinal direction), the second switch base 41 is provided with a test position auxiliary switch 43, the third switch base 42 is provided with a connection position auxiliary switch 44, and the second switch base 41 and the third switch base 42 are both provided with guiding portions 411 and 421 (cylindrical shape) having openings facing the corresponding auxiliary contacts 431 and 441; a stepped triggering column 45 (or a nut is screwed to generate a step surface 451) is slidably arranged in the mounting cavity 71 (communicated with the outside through a through hole in the protective cover 7) in the protective cover 7, a third spring 46 is sleeved on the triggering column 45, one end of the third spring 46 abuts against the step surface 451 of the triggering column 45, and the other end of the third spring abuts against the bottom ends of the guide parts 411 and 421; the top end of the trigger post 45 passes through the protective cover 7 and extends into the guide parts 411 and 421, and the bottom end of the trigger post extends out of the transverse plate part 11 of the mounting substrate 1 and is matched with the matching locking display trigger unit 6 (shown in fig. 4, a trapezoidal bump 66 is arranged in the groove 65); the top end of the trigger post 45 is provided with a trigger ramp 452 (chamfered surface) for triggering the auxiliary contacts 431, 441.

In the process of pushing the drawer, firstly, the trigger column 45 corresponding to the second switch base 41 touches the trapezoidal bump 66 to be forced to jack up, and after jacking up, the trigger inclined plane 452 extrudes the trigger auxiliary contact 431, and the test position auxiliary switch 43 is closed; the trigger post 45 corresponding to the third switch base 42 is pushed forward to touch the trapezoidal bump 66, and is forced to jack up, after jacking up, the trigger inclined plane 452 presses the trigger auxiliary contact 441, the connection position auxiliary switch 43 is closed, at this time, the trigger post 45 corresponding to the second switch base 41 descends due to the reset of the third spring 46, and the test position auxiliary switch 43 is disconnected.

As shown in fig. 1, 3, 11 and 12, in the present embodiment, the closing interlock unit 5 is a manual closing interlock unit 52, and the specific implementation structure is as follows: the manual closing interlock unit 52 includes a mounting plate 521, a closing linkage 522, a locking plate 523, and an interlock plate 524. The mounting plate 521 is provided with an escape opening 5212 for escaping from the thrust plate 221, the bottom of the mounting plate 521 is provided with a bent fixing portion 5213, and the bent fixing portion 5213 and the mounting base plate 1 are provided with fixing mounting holes 5214 and 111 and escape holes 5215 and 112 for escaping from the locking plate 523. The mounting plate 521 is vertically mounted on the lateral plate 11 of the mounting substrate 1 by a bent fixing portion 5213, and is fixedly connected to the front side of the barrier cover 7 by a fixing screw 5216. The closing linkage structure 522 is rotatably mounted on the rear end surface of the mounting plate 521, and one end of the closing linkage structure is movably connected with the locking plate 523 and used for driving the locking plate 523 to make vertical reciprocating linear motion on the rear end surface of the mounting plate 521; the interlocking plate 524 is rotatably mounted on the front end surface of the mounting plate 521, one end of the interlocking plate 524 is provided with an insertion part 5241, and the other end of the interlocking plate 524 is movably connected with the locking plate 523 and is driven by the locking plate 523 (the locking plate 523 makes a vertical reciprocating linear motion) to swing around the rotating mounting position b on the front end surface of the mounting plate 521.

After the drawer is locked, the closing linkage structure 522 is manually rotated to perform linkage closing (when the circuit breaker is closed, the circuit breaker and the closing linkage structure 522 have a mechanical connection relationship, and the specific connection structure is well known to those skilled in the art and is not described herein), and meanwhile, the insertion part 5241 is inserted into the positioning insertion hole 2217 in the pushing plate 221 in the drawer locking unit 2; meanwhile, the locking plate 523 moves downwards while linkage closing, and is inserted into the cabinet body frame supporting the drawer by means of the avoidance holes 5215 and 112, so that secondary locking of the drawer is realized; before the drawer is unlocked, the closing linkage structure 522 is manually rotated to perform linkage opening, and meanwhile, the insertion part 5241 is disengaged from the positioning insertion hole 2217; the locking plate 523 moves upward while the opening is linked, and is separated from the cabinet frame supporting the drawer through the avoiding holes 5215 and 112, so that secondary unlocking is realized. Namely, after linkage closing, the breaker is closed, and meanwhile, the drawer locking unit 2 is positioned and locked, and the pushing plate 221 cannot be operated any more, namely, the drawer cannot be unlocked, so that misoperation is effectively prevented, and personal safety is ensured; before unlocking, the rotary closing linkage structure 522 needs to be rotated, the circuit breaker is disconnected after linkage opening, and meanwhile, the positioning and locking of the drawer locking unit 2 are released.

The whole process is to convert the rotation of the closing linkage 522 into the linear motion of the locking plate 523, and then to convert the linear motion into the swing of the interlocking plate 524. The concrete implementation structure is as follows:

the closing linkage structure 522 comprises a cylindrical body 5221 rotatably mounted on the mounting plate 521, a mounting portion 5222 (forming an eccentric structure) extending radially outwards is arranged on the cylindrical body 5221, a limiting column 5223 is arranged on the mounting portion 5222, a third long circular hole 5232 matched with the limiting column 5223 is arranged on a bending portion 5231 of the locking plate 523, and the limiting column 5223 and the third long circular hole 5232 are matched to realize movable connection of the closing linkage structure 522 and the locking plate 523. The closing linkage 522 rotates to be converted into a vertical reciprocating motion of the locking plate 523.

The other end of the interlocking plate 524 is provided with a guide hole 5242. The mounting plate 521 is provided with a vertical guide hole 5211, a connecting member (a connecting screw 525 or a step rivet) is slidably installed in the guide hole 5242, and one end of the connecting member passes through the vertical guide hole 5211 and is fixedly connected with the locking plate 523 (by means of threaded connection of a threaded hole 5233 adapted to the connecting screw 525 or by means of a smooth hole adapted to the step rivet), so as to realize movable connection between the locking plate 524 and the locking plate 523. The vertical reciprocating motion of the latching plate 523 is converted into the swing motion of the latching plate 524 centering on the rotation mounting position b.

As shown in fig. 3, 4 and 9, in the present embodiment, the display trigger unit 6 is used to be fixedly mounted on the cabinet frame under the drawer; the push-pull type locking device mainly comprises a push-pull positioning block 61, wherein a slope 62, a first locking hole 63 and a second locking hole 64 are arranged on the push-pull positioning block 61 at intervals along the push-pull direction (longitudinal direction); the first locking hole 63 and the second locking hole 64 are matched with the locking plate 231 and used for realizing the locking or unlocking of the drawer in different position states; the pushing positioning block 61 is provided with a groove 65 extending along the pushing and pulling direction, the bottom of the groove 65 is provided with a trapezoidal bump 66, and the trapezoidal bump 66 is used for enabling the corresponding trigger column 45 to move up and down to trigger the corresponding auxiliary contacts 431 and 441; a first pushing inclined surface 67 and a second pushing inclined surface 68 are arranged at one side part of the pushing positioning block 61, and the first pushing inclined surface 67 and the second pushing inclined surface 68 are used for pushing the collision pin 34 to enable the rotary push plate 33 to rotate so as to enable the position display plate 31 to move transversely, so that the display of different position states is realized; the first locking hole 63 corresponds to the position of the first push slope 67, the second locking hole 64 corresponds to the position of the second push slope 68, and the trapezoidal protrusion 66 corresponds to the position of the second locking hole 64. To ensure the synchronism of the drawer locking unit 2, the position display unit 3 and the position auxiliary contact unit 4.

The trapezoidal bump 66 can be set to the following positions: when the locking plate 231 enters the first locking hole 63, the triggering post 45 corresponding to the second switch base 41 moves upward by touching the trapezoidal projection 66, triggering the auxiliary contact 431; when the locking plate 231 enters the second locking hole 64, the trigger post 45 corresponding to the third switch holder 42 moves upward by touching the trapezoidal projection 66, and triggers the auxiliary contact 441.

The specific working principle is as follows:

1. when the drawer is pushed, the locking plate 231 in the drawer locking unit 2 moves upward (the second spring 232 is pressed) due to the inclined upward slope 62 of the pushing positioning block 61, and continues to push to the position of the first locking hole 63, the second spring 232 sleeved on the locking plate 231 resets, the locking plate 231 moves downward due to the elastic force and falls into the first locking hole 63, and at the moment, the drawer is locked at the test position. Meanwhile, the trigger pin 45 corresponding to the second switch base 41 of the auxiliary position contact unit 4 first touches the trapezoidal protrusion 66 of the pushing positioning block 61, and is forced to jack up, and after the jacking, the trigger slope 452 presses the auxiliary trigger contact 431, and at this time, the auxiliary test position switch 43 is closed. In addition, the collision pin 34 in the position display unit 3 firstly touches the first pushing inclined surface 67, and due to the collision guidance of the first pushing inclined surface 67, the collision pin 34 is forced to move in the arc-shaped hole 113 of the mounting substrate 1, so as to drive the rotary push plate 33 to rotate by taking the rotating shaft 32 as the center, and simultaneously drive the position display plate 31 to move transversely, and the test mark on the position signboard 312 can be observed.

After the drawer is locked at the position, the closing linkage structure 522 in the manual closing interlocking unit 52 is operated (to perform closing), the closing linkage structure 522 drives the locking plate 523 to perform vertical motion, so as to drive the interlocking plate 524 to swing, and the insertion part 5241 of the interlocking plate 524 is inserted into the positioning insertion hole 2217 on the pushing plate 221 in the drawer locking unit 2, so that the situation that an operator cannot push the pushing plate 221 to unlock the drawer in a closing state is ensured, and personal safety can be ensured; at the moment, only the auxiliary circuit in the drawer is in a conducting state, namely the drawer is not completely pushed into the cabinet frame.

2. Before unlocking the drawer at the current position, the closing linkage structure 522 in the manual closing interlocking unit 52 is operated in a reverse direction (to perform opening), the closing linkage structure 522 drives the locking plate 523 to perform vertical motion, so as to drive the interlocking plate 524 to swing, and the insertion part 5241 of the interlocking plate 524 is disengaged from the positioning insertion hole 2217 of the pushing plate 221; after the brake is switched off, the drawer can be continuously pushed; when the pushing plate 221 is pushed, the trapezoidal notch 2215 on the pushing plate 221 moves away from the inclined surface a of the first plate portion 2211 to force the locking plate 231 to move upward to disengage the first locking hole 63 of the locking display trigger unit 6, so as to unlock the drawer. Subsequently, the drawer is pushed, the locking plate 231 of the drawer locking unit 2 is further pushed to the position of the second locking hole 64, the second spring 232 sleeved on the locking plate 231 is reset, and the locking plate 231 is moved downward by the elastic force to fall into the second locking hole 64, at this time, the drawer is locked at the "connection" position. Meanwhile, the trigger pin 45 corresponding to the third switch seat 42 of the position auxiliary contact unit 4 touches the trapezoidal protrusion 66 of the pushing positioning block 61, and is forced to jack up, and after the jack-up, the trigger slope 452 presses the trigger auxiliary contact 441, and at this time, the connection position auxiliary switch 44 is closed. In addition, the position display unit 3 touches the second pushing inclined surface 68 after the collision pin 34, and the collision pin 34 continues to move in the arc-shaped hole 113 on the mounting substrate 1 due to the collision guidance of the second pushing inclined surface 68, so as to drive the rotary push plate 33 to continue to rotate by taking the rotary shaft 32 as the center, and simultaneously drive the position display plate 31 to perform transverse movement, so that the connection mark on the position signboard 312 can be observed.

After the drawer is locked at the position, the closing linkage structure 522 in the manual closing interlocking unit 52 is operated (to close again), the locking plate 523 is driven to move vertically, the interlocking plate 524 is driven to swing, and the insertion part 5241 of the interlocking plate 524 is inserted into the positioning insertion hole 2217 of the pushing plate 221 in the drawer locking unit 2; under the closing state, an operator cannot push the pushing plate 221 to unlock the drawer, so that personal safety can be ensured; at the moment, the auxiliary circuit and the strong circuit (main circuit) in the drawer are both in a conducting state, and the drawer is completely pushed into the cabinet body frame.

Example two:

the concept of the embodiment is basically the same as that of the first embodiment; the difference is that the closing interlock unit 5 in the present embodiment is an electric closing auxiliary contact unit 51, and only the difference will be briefly described below.

As shown in fig. 13 and 14, the electric closing auxiliary contact unit 51 includes a first switch mounting base 511 mounted on the mounting substrate 1 or on a bottom plate of the drawer (in this embodiment, mounted on the bottom plate of the drawer, and the mounting substrate 1 is provided with a notch 114 for avoiding the opening), a closing auxiliary switch 512 provided on the first switch mounting base 511, and a spring plate 513 provided on the closing auxiliary switch 512; the elastic sheet 513 corresponds to the closing auxiliary contact 514 of the closing auxiliary switch 512; when the drawer is locked, the first end 2216 of the pushing plate 221 (in the reset state of the first spring 223) forces the elastic sheet 513 to generate elastic deformation to trigger the closing auxiliary contact 514, so that linkage closing is realized; when the drawer is unlocked, the first end 2216 of the pushing plate 221 (pushing the pushing plate 221 to unlock the drawer) is separated from the elastic sheet 513, and the elastic sheet 513 resets to separate from the auxiliary contact 514, so that linkage switching-off is realized.

The structure of other units is the same as that in the first embodiment, and reference is made to the explanation of the structure of other units in the first embodiment, which is not described herein again.

Compared with the first embodiment, the working principle of the embodiment is the same, but the structure is simpler, and linkage switching-on/switching-off can be realized without manual operation; the electric closing auxiliary contact unit 51 of the present embodiment can automatically perform the interlocking closing/opening when the drawer is locked and unlocked.

To sum up, the push-close interlocking mechanism for the push-pull type drawer can lock the drawer at different positions to realize corresponding test, connection and close-close functions, improves the integration degree, increases the universality and facilitates the installation and debugging of matched equipment; the display trigger unit and the drawer locking unit are matched to realize accurate locking of different position states, and compared with the technical scheme of utilizing the pin shaft in the prior art, the locking device is safer and more reliable.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A propulsion switching-on interlocking mechanism for a push-pull drawer is characterized by comprising a mounting substrate, a switching-on interlocking unit and a matching locking display triggering unit arranged below the mounting substrate;

the mounting substrate is provided with a drawer locking unit, a position display unit and a position auxiliary contact unit; in the process of pushing the drawer, the drawer locking unit realizes the locking or unlocking of the drawer in different position states under the coordination of the coordination locking display triggering unit, the position display unit displays the different position states of the drawer under the coordination of the coordination locking display triggering unit, and the position auxiliary contact unit triggers auxiliary contacts corresponding to the different position states under the coordination of the coordination locking display triggering unit;

the closing interlocking unit is used for locking/unlocking the drawer locking unit while the switch is closed/opened.

2. A push-and-close interlocking mechanism for a push-and-pull drawer according to claim 1, wherein the drawer locking unit comprises a support frame fixed with the mounting substrate, a push component slidably mounted on the support frame along a push-and-pull direction, a locking component slidably mounted on the support frame along a vertical direction, and a guide rod fixedly connected with the locking component and extending out of the support frame, wherein the support frame is provided with a first oblong hole which is matched with the guide rod and extends vertically;

the pushing assembly is matched with the guide rod to enable the locking assembly to move vertically, and the drawer is locked or unlocked under the matching of the matching locking display trigger unit.

3. The advancing closing interlock mechanism for a push-pull drawer according to claim 2, wherein the advancing assembly comprises an advancing plate, an extending advancing plate, and a first spring; the pushing plate comprises a first plate part, a second plate part and a connecting part which are sequentially connected, and a step surface is formed at the connecting part of the first plate part and the second plate part; the first spring is sleeved on the first plate part, one end of the first spring abuts against the step surface, and the other end of the first spring abuts against the support frame; the top of the second plate part is provided with a trapezoidal notch matched with the guide rod, and the second plate part is provided with a first end face or a positioning jack matched with the switching-on interlocking unit; a second oblong hole extending along the push-pull direction is formed in the second plate part, and a limit screw matched with the second oblong hole is arranged on the support frame; the connecting part is connected with the extension propelling plate, and the extension propelling plate extends out of the vertical plate part of the mounting base plate;

the locking assembly comprises a locking plate and a second spring which are stepped; the second spring is sleeved on the small-diameter end of the locking plate, one end of the second spring abuts against the step surface of the locking plate, and the other end of the second spring abuts against the supporting frame; the guide rod is vertically and fixedly connected with the large-diameter end of the locking plate, and the large-diameter end of the locking plate extends out of the transverse plate part of the mounting base plate and is used for being matched with the matching locking display trigger unit to realize the locking of the drawer;

when the pushing plate is pushed, the locking plate is forced to move upwards by the trapezoid notch so as to be separated from the matching of the matching locking display trigger unit, and the drawer is unlocked.

4. The advancing closing interlocking mechanism for a push-pull drawer according to claim 3, wherein the closing interlocking unit comprises an electric closing auxiliary contact unit or a manual closing interlocking unit.

5. The advancing-closing interlocking mechanism for a push-pull drawer according to claim 4, wherein the electric-closing auxiliary contact unit comprises a first switch mounting seat mounted on the mounting substrate or at the bottom of the drawer, a closing auxiliary switch disposed on the first switch mounting seat, and a resilient piece disposed on the closing auxiliary switch; the elastic sheet corresponds to a closing auxiliary contact of the closing auxiliary switch;

when the drawer is locked, the first end face of the pushing plate forces the elastic sheet to generate elastic deformation to trigger the auxiliary closing contact, and linkage closing is realized; when the drawer is unlocked, the first end face of the pushing plate is separated from the elastic sheet, the elastic sheet resets and is separated from the auxiliary closing contact, and linkage opening is achieved.

6. The advancing-closing interlocking mechanism for a push-pull drawer according to claim 4, wherein the manual closing interlocking unit comprises a mounting plate, a closing linkage structure, a locking plate, and an interlocking plate;

the installation plate is installed on the installation base plate, the closing linkage structure is rotatably installed on the rear end face of the installation plate, and one end of the closing linkage structure is movably connected with the locking plate and used for driving the locking plate to do vertical reciprocating linear motion on the installation plate; the interlocking plate is rotatably arranged on the front end face of the mounting plate, one end of the interlocking plate is provided with an inserting part, and the other end of the interlocking plate is movably connected with the locking plate and is used for swinging under the driving of the locking plate;

after the drawer is locked, the closing linkage structure is manually rotated, and linkage closing is realized when the insertion part is inserted into the positioning insertion hole; before the drawer is unlocked, the closing linkage structure is manually rotated, and linkage opening is realized when the insertion part is separated from the positioning insertion hole.

7. A push-close interlocking mechanism for a push-pull drawer according to claim 6, wherein the other end of the interlocking plate is provided with a guide hole, the mounting plate is provided with a vertical guide hole, a connecting piece is slidably mounted in the guide hole, and one end of the connecting piece penetrates through the vertical guide hole to be fixedly connected with the locking plate, so that the interlocking plate is movably connected with the locking plate;

the closing linkage structure comprises a cylindrical body rotatably mounted on the mounting plate, a mounting part extending radially outwards is arranged on the cylindrical body, a limiting column is arranged on the mounting part, a third long circular hole is formed in a bending part of the locking plate, and the limiting column is matched with the third long circular hole so as to realize the movable connection of the closing linkage structure and the locking plate;

be provided with on the mounting panel and be used for dodging advancing the mouth of dodging of board, the bottom of mounting panel is provided with the fixed part of bending, bend the fixed part with mounting substrate corresponds position department and all is equipped with the fixed mounting hole and is used for dodging the hole of dodging of shut-off plate.

8. The advancing closing interlock mechanism for a push-pull drawer according to claim 3, wherein the position display unit comprises a position display plate, a rotation shaft, a rotation push plate, a collision pin, and a torsion spring;

the position display panel is slidably mounted on the mounting substrate, the rotating shaft is fixed on the mounting substrate, the rotating push plate is rotatably mounted on the mounting substrate by virtue of the rotating shaft, one end of the rotating push plate is movably connected with the position display panel and is used for driving the position display panel to do transverse reciprocating linear motion on the mounting substrate, and the other end of the rotating push plate is provided with a collision pin; the torsion spring is sleeved on the rotating shaft, one torsion arm is fixedly connected with the mounting substrate, and the other torsion arm is fixedly connected with the collision pin; the mounting substrate is provided with an arc-shaped hole matched with the collision pin;

the mounting substrate is provided with a transverse limiting hole, the rotary push plate is provided with a fourth oblong hole, a connecting piece is arranged in the transverse limiting hole in a sliding mode, and one end of the connecting piece penetrates out of the fourth oblong hole to be fixedly connected with the position display plate, so that the rotary push plate is movably connected with the position display plate.

9. A push-close interlocking mechanism for a push-pull drawer according to claim 8, wherein the mounting substrate is provided with a protective cover for protecting the drawer locking unit and the position display unit, and two mounting cavities extending towards the mounting substrate are formed in the protective cover;

the position auxiliary contact unit comprises a second switch seat and a third switch seat which are arranged on the protective cover and are arranged at intervals along the push-pull direction, a test position auxiliary switch is arranged on the second switch seat, a connection position auxiliary switch is arranged on the third switch seat, and guide parts with openings facing the corresponding auxiliary contacts are arranged on the second switch seat and the third switch seat;

a trigger column is arranged in the mounting cavity in a sliding manner, a third spring is sleeved on the trigger column, one end of the third spring abuts against the step surface of the trigger column, and the other end of the third spring abuts against the bottom end of the guide part; the top end of the trigger column penetrates through the protective cover and extends into the guide part, and the bottom end of the trigger column extends out of the mounting substrate; and the top end of the trigger column is provided with a trigger inclined plane for triggering the auxiliary contact.

10. The push-to-close interlocking mechanism for a push-pull drawer according to claim 9, wherein the cooperative locking display triggering unit is configured to be fixedly mounted on a cabinet frame below the drawer, the cooperative locking display triggering unit comprising a push positioning block;

a slope surface, a first locking hole and a second locking hole are arranged on the pushing and pulling positioning block at intervals along the pushing and pulling direction; the first locking hole and the second locking hole are matched with the locking plate and used for realizing the locking or unlocking of the drawer in different position states;

the pushing positioning block is provided with a groove extending along the pushing and pulling direction, the bottom of the groove is provided with a trapezoidal bump, and the trapezoidal bump is used for enabling the triggering column to move up and down to trigger the corresponding auxiliary contact;

a first pushing inclined plane and a second pushing inclined plane are arranged at one side part of the pushing positioning block and are matched with the collision pin to display different position states;

the first locking hole corresponds to the first pushing inclined plane, the second locking hole corresponds to the second pushing inclined plane, and the trapezoidal lug corresponds to the second locking hole.

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