CN212085364U - Electrical connection system and mechanical interlock device - Google Patents

Abstract

Providing an electrical connection system and a mechanical interlock device, wherein a first member is provided on an insertion path of a plug in a socket and is provided slidably; the driving piece is used for the first component to be locked in a releasable way; a second member slidably disposed in the socket, spaced from the first member, and operatively associated with the prime mover; the output member is linked with the second member; the mechanical interlock includes a first state in which the prime mover is locked by the first member and the output member is out of the insertion path; in the second state, the driving piece is disengaged from the first member, and the output member is linked to the insertion path and is used for abutting against the plug; in switching between the first state and the second state, the direction of movement of the second member and the first member is arranged to be opposite.

Description

Electrical connection system and mechanical interlock device

Technical Field

The utility model relates to a mechanical interlock that socket and plug connection used.

Background

The current flowing through the connection between the industrial socket and the plug is large, and accidents are easily caused by misoperation of the plug and the socket. The standard design is that when the plug is inserted into the receptacle, the receptacle is not powered. When the plug is inserted into the socket, the power switch is turned on, the circuit in the socket is electrified, the socket and the plug are electrically connected, and high current flows, so that the plug cannot be pulled out of the socket unless the power switch is turned off.

Various mechanical interlocking devices are known to achieve this function, and published documents include GB1590315A, CN 102769236A.

GB1590315A provides a latch which pivots about a fulcrum below the plug receptacle at the inserted position of the plug, the latch being connected to the power switch of the plug receptacle by a linkage, the latch engaging with a formation on the plug by a key portion at its upper end to effect locking or unlocking. The swinging of the latch requires a large space.

The linkage locking mechanism disclosed in CN102769236A mainly comprises a transmission member, a connecting rod and a brake plate mounted on the knob switch shaft and rotating therewith. The transmission part is a lever part with an angle, the fulcrum of the transmission part is arranged at the corner of the lever part, and the fulcrum is also arranged below the inserting position of the plug of the socket. The swinging of the lever member requires a large space.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a mechanical interlocking device, it has compact structure.

Another object of the present invention is to provide an electrical connection system, which employs the mechanical interlock device.

A mechanical interlock for arrangement in a socket for receiving a plug, wherein the mechanical interlock comprises a first member and a planar motion mechanism. Wherein the first member is provided on an insertion path of the plug in the socket and is provided slidably; in the planar motion mechanism, a prime mover is used for the first member to be releasably latched; a second member slidably disposed in said socket, spaced from said first member, and disposed in linkage with said prime mover; and an output member is arranged in linkage with the second member;

wherein the mechanical interlock comprises a first state in which the prime mover is locked by the first member and the output member exits the insertion path, and a second state; in the second state, the prime mover is disengaged from the first member and the output member is linked to the insertion path for abutting a plug; the second member is arranged to move in an opposite direction to the first member during switching between the first state and the second state.

In one or more embodiments of the mechanical interlock device, the mechanical interlock device further comprises an intermediate state between the first state and the second state in which the output member has been interlocked to the insertion path, the second member slides while the interlocking of the output member and the second member is disconnected during switching of the mechanical interlock device from the intermediate state to the second state; in the second state, the second member is fixed by virtue of being limited by a dead center provided by the output member.

In one or more embodiments of the mechanical interlock device, the second member is provided with a linkage between the output members through cooperation of an elongated hole and a pin, the elongated hole provides an elongated section, and in the intermediate state, the elongated section extends in a direction consistent with a sliding direction of the second member, so that the second member slides in the elongated section through the pin during the switching of the mechanical interlock device from the intermediate state to the second state, and the linkage between the output members and the second member is disconnected.

In one or more embodiments of the mechanical interlock, the planar motion mechanism further comprises a link comprising a link first end, a link second end, and rotatably disposed in the socket about an axis between the link first end and the link second end; the first component is a push rod and comprises a first end and a second end, the first end of the push rod is arranged on the insertion path of the plug, and the second end of the push rod is provided with a push rod buckle; the driving piece is an interlocking block, is arranged in the socket in a sliding mode along the intersecting direction intersecting with the sliding direction of the first component, is also hinged with the first end of the connecting rod in a sliding mode, and comprises an interlocking buckle buckled by the push rod buckle; the second component is an elongated sliding block and comprises a first sliding block end and a second sliding block end, and the first sliding block end is in sliding hinge joint with the second connecting rod end; and the output member is a latch slidably hinged in the socket and the second end of the slider; the push rod buckle is arranged to be capable of being separated from the interlocking buckle along the moving direction of the push rod, so that the interlocking block is unlocked; the connecting rod is arranged to be driven by the unlocked interlocking block and outputs motion at the second end of the connecting rod through rotation; the elongated slider is arranged to receive motion output by the second end of the link; the latch is configured to receive the sliding movement of the slider and swing to swing or move the latch out of the insertion path.

In one or more embodiments of the mechanical interlock, the first member is configured with a return spring for urging the first member to a position in which it latches with the prime mover.

In one or more embodiments of the mechanical interlock, the prime mover is slidably disposed in a second direction perpendicular to the sliding direction of the first member.

In one or more embodiments of the mechanical interlock, the pusher clasp extends laterally from the pusher second end, having pusher teeth and a pusher slot; the interlocking buckle is provided with interlocking teeth and interlocking grooves, and the push rod teeth and the push rod grooves are in staggered snap fit with the interlocking teeth and the interlocking grooves in the state of the buckle.

In one or more embodiments of the mechanical interlock device, the output member provides an abutment ramp for abutment with a ramp on the plug.

An electrical connection system comprising a plug, a socket and a power control switch, the power control switch controlling the energisation of the socket, the electrical connection system further comprising any said mechanical interlock, the power control switch being arranged to be linked with the prime mover; the mechanical interlocking device is set in the first state when the plug is separated from the socket, and when the plug is inserted into the socket, the first member is released from the driving of the plug to the motive power piece, and the motive power piece drives the planar motion mechanism to enable the mechanical interlocking device to be switched to the second state when the power control switch is switched to the on state.

In one or more embodiments of the electrical connection system, a side surface of the plug is provided with a projecting plug projection having a front side surface and a rear side surface in an insertion direction of the plug, the front side surface abutting an end of the first member, and the rear side surface being abutted by the output member.

In one or more embodiments of the electrical connection system, the electrical connection system further comprises a travel switch arranged to be triggered by the first member, the travel switch being adapted to control an indicating device for indicating whether the plug is inserted in place.

In one or more embodiments of the electrical connection system, the power control switch is a knob, the knob includes a knob rod, and the knob rod and the prime mover are connected by a crank-link-slider mechanism.

The utility model has the advantages that:

the mechanical interlocking device utilizes the first component to lock the planar motion mechanism and also utilizes the planar motion mechanism to lock the plug, thereby achieving the purpose of interlocking.

In an electrical connection system, the planar motion mechanism may be configured to interlock with the power control switch, whereby the first member acts to lock the power control switch to maintain the power control switch in a state in which the power source does not output current to the receptacle, such that the receptacle is not energized when the plug is not inserted into the receptacle; only after the plug is inserted into the socket, the original moving part of the planar motion mechanism is unlocked, the power supply control switch can be operated to turn on the power supply device, so that the socket is electrified, the power supply control switch is turned on to enable the planar motion mechanism to lock the plug, the socket is electrified only after the plug is inserted into the socket, and the plug cannot be pulled out.

Compared with a lever mechanism, the planar motion mechanism does not need a space for swinging the lever, and therefore, the required space is small.

Drawings

The above and other features, properties and advantages of the present invention will become more apparent from the following description of the embodiments with reference to the accompanying drawings, in which:

fig. 1 is a perspective view of an electrical connection system.

Fig. 2 is a schematic view of an application of the electrical connection system in a junction box.

Fig. 3 is a front view of the application shown in fig. 2.

Fig. 4 is another perspective view of the application shown in fig. 2.

Fig. 5 is a schematic illustration of the application of the mechanical interlock device to an electrical connection system.

Fig. 6 is a perspective view of a mechanical interlock device.

Fig. 7 is a schematic view of a mechanical interlock device in a first state in an electrical connection system.

Fig. 8 is a partial enlarged view at I in fig. 7.

Fig. 9 is a schematic view of a mechanical interlock device in a second state in an electrical connection system.

Fig. 10 is a partial enlarged view at II in fig. 9.

Fig. 11 is a schematic view of a mechanical interlock device in an intermediate state in an electrical connection system.

Fig. 12 is a partial enlarged view at III in fig. 11.

Detailed Description

The following discloses many different embodiments or examples for implementing the subject technology described. Specific examples of components and arrangements are described below to simplify the present disclosure, but these are merely examples and are not intended to limit the scope of the present invention. For example, if a first feature is formed over or on a second feature described later in the specification, this may include embodiments in which the first and second features are formed in direct contact, and may also include embodiments in which additional features are formed between the first and second features, such that the first and second features may not be in direct contact. Additionally, reference numerals and/or letters may be repeated among the various examples throughout this disclosure. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. Further, when a first element is described as being coupled or coupled to a second element, the description includes embodiments in which the first and second elements are directly coupled or coupled to each other, as well as embodiments in which one or more additional intervening elements are added to indirectly couple or couple the first and second elements to each other.

Fig. 1 and 4 show an electrical connection system in which a plug 1 and a receptacle 2 are in a coupled state. In fig. 2 and 3, the plug 1 and the receptacle 2 are in a disengaged state. The power control switch 3 is a knob and controls the on-off of the power supply device 4. The power supply device 4 supplies power to the outlet 2 through the power cord 41. As shown in fig. 2, the socket 2 has a plurality of socket members 21 in which electric contacts are built, and correspondingly, the header 1 has a plurality of pins 110, and the pins 110 are fitted into the socket members 21. When the power supply device 4 is switched to the on state by the power supply control switch 3, a current flows between the electric contacts between the plug 110 and the socket member 21. In some cases, the current flowing between the plug 1 and the socket 2 is large, and pulling out the plug 1 in a state where the current is passed between the plug 1 and the socket 2 is a dangerous operation, and therefore it is not desirable that the plug 1 cannot be pulled out once it is coupled to the socket 2 and after the current is passed unless the current-passed state is released. On the other hand, when the plug 1 is not inserted into the receptacle 2, it is also undesirable that the plug 2 is in a charged state. The mechanical interlock described below achieves the foregoing objectives.

Fig. 5 shows the use of a mechanical interlock in the electrical connection system shown in fig. 1 to 4. Figure 6 shows the mechanical interlock device in isolation. Fig. 6 can be understood as an enlarged view of the mechanical interlock device of fig. 5.

As shown in fig. 6, the mechanical interlock device includes a first member 51 and a planar motion mechanism. The planar motion mechanism includes a prime mover 52, a second member 53 and an output member 54.

Fig. 7 and 8 show a first state of the mechanical interlock device, and fig. 9 and 10 show a second state of the mechanical interlock device. The prime mover 52, the second member 53 and the output member 54 can also be seen in fig. 8 and 10.

With reference to fig. 6, 8 and 10, the first member 51 is provided on the insertion path of the plug 1 in the receptacle 2 and is provided slidably in the first direction Z. The insertion path is an active path of the plug 1 in the socket 2, or a position that the plug 1 can reach or pass through. The first direction Z is generally the same direction as the advancing and retreating direction of the plug 1 in the socket 2. In the embodiment shown in the figures, the first member 51 is a push rod and the first direction Z is generally the same direction as the extension direction of the push rod. The prime mover 52 is releasably lockable with the first member 51 in a first state shown in fig. 8. Fig. 8 and 10 show an embodiment of the lock, the first member 51 having a first end 511 and a second end 512, a push bar buckle 513 being provided at the second end 512, the push bar buckle 513 having a push bar tooth 514 and a push bar groove 515. Correspondingly, the prime mover 52 is an interlocking block including an interlocking catch 521, the interlocking catch 521 also having an interlocking tooth 522 and an interlocking slot 523. As shown in fig. 8, the pusher teeth 514 and the pusher grooves 515, the interlocking teeth 522 and the interlocking grooves 523 are in a state of being snapped into each other, i.e., a state of being dog-teeth-staggered.

The second member 53 is in a different position in fig. 8 and 10 and can be slid up from the position shown in fig. 8 to the position shown in fig. 10 or down from the position shown in fig. 10 to the position shown in fig. 8. The sliding direction of the second member 53 is also the first direction Z, spaced apart from the first member 51, parallel or substantially parallel thereto. In the embodiment shown, the second member 53 is an elongated slider having a slider first end 531 and a slider second end 532.

The output member 54 is in a different position in fig. 8 and 10, in fig. 8, out of the insertion path of the plug 1, whereas in fig. 10, the output member 54 enters the insertion path of the plug 1 and abuts against the plug 1, so that the plug 1 cannot be pulled out.

The output member 54 can be switched between the state shown in fig. 8 and the state shown in fig. 9. It can also be noted from fig. 10 that, in addition to the output member 54 being snapped against the plug 2, the prime mover 52 is in a tripped state with respect to the first member 51, i.e. the planar motion mechanism is in a movable state. In the first state, the prime mover 52 is locked by the first member 51, and the output member 54 is separated from the insertion path, so that the plug 1 can be inserted into the receptacle 2, but the planar motion mechanism is locked by the first member and cannot move.

With reference to fig. 8 and 10, it will be further appreciated that when the mechanical interlock is switched from the first state shown in fig. 8 to the second state shown in fig. 10, the first member 51 is first moved downward, so that the first member 51 and the prime mover 52 are unlocked. Then the parallel movement mechanism can move, the motive power piece 52 is driven by the power control switch 3, the motive power piece 52 is linked with the second component 53, the second component 53 is linked with the output component 54, and the second component 53 moves upwards. When switching from the second state shown in fig. 10 to the first state shown in fig. 8, the prime mover 52 is driven by an external force, for example, the power control switch 3, and moves from the position shown in fig. 10 to the position shown in fig. 8, the prime mover 52 drives the second member 53 to move downward, and the second member 53 drives the output member 54 to swing leftward, and away from the insertion path of the plug 1. The first member 51 then moves upward again, latching with the prime mover 52. Thus, during switching, the direction of movement of the second member 53 is set to be opposite to that of the first member 51.

As can also be seen from fig. 6, 8 and 10, the mechanical interlock lock requires less space and can be provided by adding a space on one side of the first member 51. The mechanical interlock device outputs the movement of the locking plug 1 to the plug 1 by using the second member 53 which slides in parallel or substantially parallel to the movement direction of the first member 51, and requires less space because no space for the lever to swing is required as compared with a lever mechanism.

The linkage of the planar motion mechanism is illustrated in fig. 8 and 10, for example, by a link 55 connecting the second member 53 and the prime mover 52. Link 55 includes a link first end 551, a link second end 552, and is rotatably disposed in socket 2 about an axis between link first end 551 and link second end 552, such as by pivoting 553. As shown in FIG. 6, link first end 551 has an elongated aperture 5511 and link second end 552 has an elongated aperture 5521. The elongated hole 5511 of the first end 551 of the link is slidably engaged with the pin 524 mounted on the prime mover 52, and the pin 524 is also rotatable in the elongated hole 5511, thereby forming a sliding hinge structure. The elongated hole 5521 of the second end 552 of the link engages with the pin 533 mounted on the first end 531 of the slider of the second member 53, and the pin 533 is slidable and rotatable in the elongated hole 5521, thereby forming a sliding hinge structure. The prime mover 52 slides in a horizontal direction, i.e., a direction substantially perpendicular to the direction Z. The length of each elongated hole is set according to the principle of mechanics as long as it is sufficient to convert the sliding of the prime mover 52 into the sliding of the second member 53. The elongated holes 5521 and 5511 are illustrated as having a linear longitudinal direction, but are not limited thereto, and the longitudinal direction of the elongated holes may be curved and extended according to a specific arrangement space. Further, the positions of the elongated holes and the shafts of the aforementioned slide hinge structures may be generally interchanged and are not limited to the manner shown in the drawings. It will also be understood from the foregoing description that the linkage of the prime mover 52 with the second member 53 is to convert the sliding of the prime mover 52 into the sliding of the second member 53, and thus the linkage is not limited to the linkage by the link 55, but may be other orthogonal transmission mechanisms or a mechanism similar to the orthogonal transmission mechanism. The linkage through the connecting rod 55 has the characteristics of simple structure, good action stability and smooth mechanism.

As shown in fig. 6, the upper end of the second member 53, i.e., the second slider end 532, has a central slot or two side walls that sandwich one end of the output member 54. The output member 54 is rotatable in the socket 1 by a pivot 543. As shown in fig. 8 and 10, the left end of the output member 54 has an elongated hole 541, and accordingly a pin 5321 is mounted on the upper end 532 of the second member 53, the engagement of the pin 5321 and the elongated hole 541 allowing slidable movement with respect to each other and also allowing the pin 5321 to be rotatable, thereby constituting a slide hinge structure. The provision of the second member 53 in conjunction with the output member 54 allows the second member 53 to slide while allowing the output member 54 to rotate, so that the elongate holes 541 can vary in size and shape depending on the particular spatial arrangement. As shown in fig. 10, the output member 54 acts as a latch to hold the plug 1, so that the plug 1 cannot be pulled out, specifically, one side of the output member 54 has an inclined surface 542, the side surface of the plug 1 has another inclined surface 100, the output member 54 rotates to make the two inclined surfaces 542 and 100 fit, and the holding effect can be enhanced by surface-to-surface contact. It can be seen that the output member 54 acts as an output of the planar motion mechanism, entering or leaving the insertion path of the plug 1, thereby locking or unlocking the plug 1.

The matching of the elongated hole 541 and the pin 5321 also has a self-locking function. Before entering the second state shown in fig. 10, the elongated hole 541 and the pin 5321 also have an intermediate state, i.e., the intermediate state is between the first state and the second state, through which switching between the first state and the second state is required. The intermediate state is as shown in fig. 11 and 12, the second member 53 has pushed the output member 54 to the insertion path of the plug 1 through the elongated hole 541 and the pin 5321, and at this time, if the upward sliding of the second member 53 is stopped, the force trying to pull out the plug 1 will have a tendency to move in the reverse direction or to move in the reverse direction, so that the force is transmitted to the output member 54, the second member 53, the prime mover 52, and the power control switch 3 described later. To prevent the reverse movement, various measures can be taken, for example, the rotation of the power control switch 3 needs to be unlocked itself, or a movable latch is used to cooperate with the driving element 52, and for example, the elongated hole 541 has an extension 5411, and the extension 5411 allows the pin 5321 to slide further upward, that is, after the second member 53 pushes the output member 54 to the insertion path of the plug 1, the extension 5411 allows the second member 53 or the pin 5321 to slide further upward, and the sliding is independent from the pushing of the output member 54, that is, the linkage of the two is disconnected, or the output member 54 cannot rotate further, and the extension direction of the extension 5411 is consistent with the sliding direction of the second member 53. The mechanical interlock device enters the second state shown in fig. 9 and 10 from the intermediate state of fig. 11 and 12 due to the further sliding provided by the extension 5411, and the rotation of the output member 54 cannot drive the pin 5321 or the second member 53 in reverse direction because the further sliding of the pin 5321 provided by the extension 5411 is independent of the rotation of the output member 54, so that the mechanical interlock device is self-locking and the reverse movement caused by the force trying to pull out the plug 1 is therefore interrupted or prevented. As shown in fig. 10, the upper end of the extension 5411 forms a stop for the pin 5321 to slide upward, thereby allowing the second member 53 to be fixed without being further slid.

As shown in fig. 8 and 10, the first member 51 is provided with a return spring 519, and the return spring 519 is used to urge the first member 51 to a position where it is latched with the prime mover 52. For example, when the first member 51 is pushed down by the plug 1, the return spring 519 generates a force pushing the first member 51 upward, so that the first member 51 tends to move upward, and once the plug 1 is pulled out, the first member 51 moves upward to be returned. Since the plug 1 is locked by the output member 54, the plug 1 can be pulled out only after the output member 54 leaves the insertion path of the plug 1, in other words, the plug 1 can be pulled out after the prime mover 52 is driven to the position shown in fig. 8, and once the plug 1 is pulled out, the first member 51 is pushed upward by the spring force of the return spring 519 so that the first member 51 latches the prime mover 52.

As shown in fig. 6, 8 and 10, prime mover 52 is slidably disposed in another direction that is perpendicular (including substantially perpendicular) to direction Z. As will be described later, the driving force applied to the prime mover 52, that is, the force generated in the power control switch 3, coincides with the sliding direction of the prime mover 52, and therefore the prime mover 52 is easily driven.

Returning to fig. 1-4, the power control switch 3 is provided in conjunction with the prime mover 52. The mechanical interlock device is set in a first state, i.e. the state shown in fig. 8, when the plug 1 is disengaged from the socket 2. When the plug 1 is inserted into the socket 2, the first member 51 is disengaged from the prime mover 52 in response to the driving of the plug 1, and the prime mover 52 drives the planar motion mechanism in response to the power control switch 3 being switched to the on state (the state that turns on the power device 4), whereby the mechanical interlock device is switched to the second state.

One of the ways of linking the power control switch 3 and the driving link 52 is to use a crank-link slider mechanism. As shown in fig. 1 to 5, the power control switch 3 is a knob, the knob includes a knob rod 32, the knob rod 32 has a disc 33, the disc 33 is hinged to the left end of a connecting rod 34, the right end of the connecting rod 34 is connected to the left end of a sliding rod 36 through a hinge shaft 35, the sliding rod 36 is constrained by a guide hole 370 on a guide piece 37, and the right end of the sliding rod 36 is hinged to the driving link 52 and can only move.

Returning to fig. 10, the side surface of the plug 1 is provided with a projecting plug protrusion 11, the plug protrusion 11 has a front side 116 and a rear side, i.e., the aforementioned slope 100, in the insertion direction of the plug 1, the front side 116 abuts against the upper end of the first member 51, and the rear side is abutted by the output member 54. This allows smooth switching between the locking of the aforementioned planar motion mechanism by the first member 51 and the locking of the plug by the planar motion mechanism.

As shown in fig. 1 to 6, the electrical connection system further comprises a travel switch 6, the travel switch 6 is arranged to be triggered by the first member 51, the travel switch 6 is used for controlling an indicating device for indicating whether the plug is inserted in place, and the travel switch 6 outputs a signal through a signal line 61. When the plug 1 is inserted into the socket 2, the plug convex part 11 at the side of the plug 1 pushes the first member 51 to move downwards, and after the first member 51 is disengaged from the driving element 52, the first member will push against the travel switch 6, thereby starting the travel switch 6, so as to assist in judging whether the plug 1 is inserted into the socket 2.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, any modification, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention, all without departing from the content of the technical solution of the present invention, fall within the scope of protection defined by the claims of the present invention.

Claims (10)

1. A mechanical interlock device for placement in a receptacle for receiving a plug, the mechanical interlock device comprising:

a first member provided on an insertion path of a plug in the socket and provided slidably;

a planar motion mechanism comprising:

a prime mover for releasably locking the first member;

a second member slidably disposed in said socket, spaced from said first member, and disposed in linkage with said prime mover; and

an output member provided in linkage with the second member;

wherein the mechanical interlock comprises a first state in which the prime mover is locked by the first member and the output member exits the insertion path, and a second state; in the second state, the prime mover is disengaged from the first member and the output member is linked to the insertion path for abutting a plug;

the second member is arranged to move in an opposite direction to the first member during switching between the first state and the second state.

2. A mechanical interlock device as claimed in claim 1, further comprising an intermediate state between said first state and said second state in which said output member has been interlocked to said insertion path, said second member sliding while said output member is decoupled from its interlocking with said second member during switching of said mechanical interlock device from said intermediate state to said second state; in the second state, the second member is fixed by virtue of being limited by a dead center provided by the output member.

3. A mechanical interlock as claimed in claim 2 wherein said second member provides for linkage between said output members through cooperation of an elongate hole providing an elongate section which extends in the same direction as the sliding direction of said second member in said intermediate condition and a pin, whereby during switching of said mechanical interlock from said intermediate condition to said second condition said second member slides in said elongate section through said pin whereby linkage between said output members and said second member is broken.

4. The mechanical interlock of claim 1 wherein said planar motion mechanism further comprises a link comprising a link first end, a link second end, and rotatably disposed in said socket about an axis between said link first end and said link second end;

the first component is a push rod and comprises a first end and a second end, the first end of the push rod is arranged on the insertion path of the plug, and the second end of the push rod is provided with a push rod buckle;

the driving piece is an interlocking block, is arranged in the socket in a sliding mode along the intersecting direction intersecting with the sliding direction of the first component, is also hinged with the first end of the connecting rod in a sliding mode, and comprises an interlocking buckle buckled by the push rod buckle;

the second component is an elongated sliding block and comprises a first sliding block end and a second sliding block end, and the first sliding block end is in sliding hinge joint with the second connecting rod end; and

the output member is a latch slidably hinged in the socket and at the second end of the slider;

the push rod buckle is arranged to be capable of being separated from the interlocking buckle along the moving direction of the push rod, so that the interlocking block is unlocked; the connecting rod is arranged to be driven by the unlocked interlocking block and outputs motion at the second end of the connecting rod through rotation; the elongated slider is arranged to receive motion output by the second end of the link; the latch is configured to receive the sliding movement of the slider and swing to swing or move the latch out of the insertion path.

5. A mechanical interlock as claimed in claim 1 wherein said first member is provided with a return spring for urging said first member to a position in which it is latched to said prime mover.

6. A mechanical interlock device as claimed in claim 1 wherein said prime mover is slidably disposed in a second direction perpendicular to the direction of sliding movement of said first member.

7. The mechanical interlock of claim 4 wherein said pusher clasp extends laterally from said pusher second end and has pusher teeth and a pusher slot; the interlocking buckle is provided with interlocking teeth and interlocking grooves, and the push rod teeth and the push rod grooves are in staggered snap fit with the interlocking teeth and the interlocking grooves in the state of the buckle.

8. A mechanical interlock device according to claim 1 wherein the output member provides an abutment ramp for abutment with a ramp on the plug.

9. An electrical connection system comprising a plug, a socket and a power control switch which controls the energisation of the socket, characterised in that it further comprises a mechanical interlock device as claimed in any one of claims 1 to 8, the power control switch being arranged to be linked to the prime mover; the mechanical interlocking device is set in the first state when the plug is separated from the socket, and when the plug is inserted into the socket, the first member is released from the driving of the plug to the motive power piece, and the motive power piece drives the planar motion mechanism to enable the mechanical interlocking device to be switched to the second state when the power control switch is switched to the on state.

10. The electrical connection system as claimed in claim 9, wherein a side surface of the plug is provided with a projecting plug projection having a front side surface and a rear side surface in an insertion direction of the plug, the front side surface being abutted against an end of the first member, and the rear side surface being abutted by the output member.

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