IO terminal block on-off detection structure

Abstract

The present invention discloses an on-off detection structure of an IO terminal block, comprising a cross-connecting metal piece fixedly arranged on a plug of the IO terminal block and a pair of on-off detection pins arranged at intervals on a socket of the IO terminal block. When the plug and the socket are plugged in place, two ends of the cross-connecting metal piece are respectively in contact with a pair of on-off detection pins on the socket to form a closed path. An on-off signal generating device is formed on the closed path. The on-off signal generating device can send a plug-in-place signal of the plug and the socket when the cross-connecting metal piece and the on-off detection pin form a closed path. The present invention ensures that the terminals of the plug and the socket are stably connected after plugging, thereby realizing stable signal transmission, and can also avoid terminal damage due to excessive force when the plug and the socket are plugged in. Through the on-off detection structure of the IO terminal block, the user can more conveniently and quickly stably plug the plug and the socket of the IO terminal block, thereby improving user convenience.

Description

Technical Field

[0001] The invention relates to an IO terminal block, and in particular to an on-off detection structure of the IO terminal block. Background Art

[0002] Currently, after the plug of the IO terminal block is plugged into the socket, there is no clear indication whether the plug is properly inserted. Therefore, it is impossible to determine whether the plug of the IO terminal block is properly inserted into the socket. If it is not properly inserted, it will cause poor subsequent signal transmission and circuit breakage. If too much force is used during insertion, the terminal is easily damaged. Summary of the invention

[0003] In order to make up for the above shortcomings, the present invention provides a continuity detection structure of an IO terminal block, which can perform continuity detection when the plug and the socket are plugged in, so that the user can clearly understand whether the plug is plugged in place, which is convenient and quick to plug in.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a continuity detection structure of an IO terminal block, comprising a cross-connecting metal piece fixedly arranged on a plug of the IO terminal block and a pair of continuity detection pins arranged at intervals on a socket of the IO terminal block, when the plug and the socket are plugged into place, the two ends of the cross-connecting metal piece are respectively in contact with a pair of continuity detection pins on the socket to form a closed path, and an on-off signal generating device is formed on the closed path, and the on-off signal generating device can send a plug-in-place signal of the plug and the socket when the cross-connecting metal piece and the continuity detection pin form a closed path.

[0005] As a further improvement of the present invention, the transverse metal part is in a U-shaped structure, and outwardly protruding contact points are respectively formed on both side walls of the U-shaped structure of the transverse metal part. The both side walls of the U-shaped structure of the transverse metal part can be inserted into the gap between a pair of on-off detection needles on the socket, and the contact points on the both side walls of the U-shaped structure of the transverse metal part can elastically press against the opposite sides of a pair of on-off detection needles on the socket.

[0006] As a further improvement of the present invention, the contact points on the two side walls of the U-shaped structure of the horizontally connected metal piece are outwardly bent V-shaped, arc-shaped and convex structures.

[0007] As a further improvement of the present invention, one end of the plug can be hingedly connected to one end of the socket shell. After the plug and the socket are fully plugged in, the other end of the plug can be snap-connected and positioned with the other end of the socket shell. The cross-connecting metal piece is arranged on the side wall of the other end of the plug, and a pair of on-off detection pins are arranged on the other end of the socket.

[0008] As a further improvement of the present invention, a hook structure is provided at the other end of the socket shell, and an elastic arm is provided at the other end of the plug, and a card point is provided on the elastic arm. When the plug is inserted into the socket by rotating, the card point on the elastic arm at the other end of the plug can be snapped and connected with the hook structure at the other end of the socket shell, and pulling the elastic arm at the other end of the plug can disengage the card point from the hook structure. Assuming that the direction of the socket is downward and the direction of the plug is upward, the cross-connecting metal part is located in the space below the elastic cantilever at the other end of the plug.

[0009] As a further improvement of the present invention, the plug includes an insulating body, an insulating cover and plug-in terminals, the insulating cover can be fixedly inserted into the open portion at the lower end of the insulating body, and the insulating body and the insulating cover are spliced ​​to form a plurality of terminal accommodating grooves for fixing and positioning each plug-in terminal, the insulating cover side wall is provided with a protruding plug-in block, the cross-connecting metal piece can be sleeved on the outside of the protruding plug-in block, and the insulating body side wall is provided with a pressure cover structure with an opening at the lower end, when the insulating cover is inserted into the open portion of the insulating body, the protruding plug-in block on the insulating cover and the cross-connecting metal piece on it can be inserted into the pressure cover structure of the insulating body together, the U-shaped structure bottom of the cross-connecting metal piece is tightly clamped between the protruding plug-in block and the pressure cover structure, and the cross-connecting metal piece and the protruding plug-in block can be inserted into the gap between a pair of on-off detection pins together.

[0010] As a further improvement of the present invention, the two opposite side walls of the outer protruding plug are respectively provided with avoidance grooves that are opposite to the two side walls of the transverse metal part U-shaped structure. The two side walls of the transverse metal part U-shaped structure can be accommodated in the avoidance grooves, and the contact points on the two side walls of the transverse metal part U-shaped structure protrude from the outside of the avoidance grooves.

[0011] As a further improvement of the present invention, a blocking wall is provided at the lower end of the opening of the avoidance groove of the external protruding plug block, and the ends of the two side walls of the U-shaped structure of the transverse metal piece are stopped on the blocking wall and cannot escape from the avoidance groove.

[0012] As a further improvement of the present invention, a groove matching the cross-connecting metal piece is formed at the upper end of the convex plug-in block, and the bottom of the U-shaped structure of the cross-connecting metal piece and the roots of the two side walls can be accommodated in the groove.

[0013] As a further improvement of the present invention, the upper end of the continuity detection needle forms a chamfered surface with shrunk size.

[0014] The beneficial technical effect of the present invention is as follows: the present invention arranges a pair of on-off detection pins on the socket of the IO terminal block, and installs a cross-connecting metal piece on the plug of the IO terminal block. When the plug and the socket of the IO terminal block are plugged in, the two ends of the cross-connecting metal piece are in close contact with the pair of on-off detection pins to form a conductive closed loop. An on-off signal generating device is arranged on this closed loop. When the loop is closed, the on-off signal generating device is energized to send out a conductive signal. Otherwise, the on-off signal generating device does not send out a conductive signal. In this way, when the user plugs in the plug and the socket of the IO terminal block, he can clearly understand whether the plug is plugged in, and ensure that the terminals of the plug and the socket are stably connected after plugging in, thereby realizing stable signal transmission. At the same time, it can avoid terminal damage due to excessive force when plugging in the plug and the socket. Through the on-off detection structure of the IO terminal block, the user can more conveniently and quickly stably plug in the plug and the socket of the IO terminal block, thereby improving user convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional diagram of the plug of the present invention;

[0016] Figure 2 is a three-dimensional diagram of the socket of the present invention;

[0017] Figure 3 This is a three-dimensional exploded view of the plug of the present invention;

[0018] Figure 4 It is a schematic diagram of the signal conduction state between the plug and the socket of the present invention;

[0019] Figure 5 for Figure 4 Middle AA section view;

[0020] Figure 6 It is a schematic diagram of the signal disconnection state of the plug and the socket of the present invention;

[0021] Figure 7 for Figure 6 Middle BB section view;

[0022] Figure 8 The figure is a schematic diagram showing the principle of the plug and socket connection of the IO terminal block. DETAILED DESCRIPTION

[0023] Embodiment: A continuity detection structure of an IO terminal block comprises a cross-connecting metal piece 11 fixedly mounted on a plug 1 of the IO terminal block and a pair of continuity detection pins 21 spaced apart on a socket 2 of the IO terminal block, wherein when the plug 1 and the socket 2 are plugged into place, two ends of the cross-connecting metal piece 11 are respectively in contact with a pair of continuity detection pins 21 on the socket 2 to form a closed path, wherein an continuity signal generating device is formed on the closed path, and wherein the continuity signal generating device can send a signal that the plug 1 and the socket 2 are plugged into place when the cross-connecting metal piece 11 and the continuity detection pins 21 form a closed path.

[0024] When the plug 1 is inserted into the base, the cross-connecting metal piece connects and conducts the two on-off detection pins 21 set at intervals on the socket 2, thereby forming a closed path for the detection circuit. The signal emitted by the on-off signal generating device expresses the information that the product is fully inserted and the user can use it normally. The on-off signal generating device can be an LED light or a text display on a display screen, or a buzzer device, etc.

[0025] During the insertion process of the plug 1, the cross-connecting metal piece will be inserted later than other points on the plug 1 to ensure the correctness of the indication information and increase the safety of use.

[0026] When the plug 1 is pulled out, the cross-connecting metal sheet gradually separates from the continuity detection pin 21 on the socket 2, the path becomes disconnected, and the user receives a message that the product is disconnected.

[0027] The continuity detection pin 21 on the socket 2 is preferably a pin terminal structure that is the same as the terminal inside it, so as to avoid adding parts and save costs.

[0028] The cross-connecting metal piece 11 is in a U-shaped structure, and outwardly protruding contact points 111 are formed on both side walls of the U-shaped structure of the cross-connecting metal piece 11, respectively. The side walls of the U-shaped structure of the cross-connecting metal piece 11 can be inserted into the gap between a pair of on-off detection needles 21 on the socket 2, and the contact points 111 on the side walls of the U-shaped structure of the cross-connecting metal piece 11 can elastically press against the opposite sides of the pair of on-off detection needles 21 on the socket 2. The cross-connecting metal piece 11 adopts a U-shaped structure, and the side walls of the U-shaped structure form a spring structure, which can make the contact points 111 thereon closely contact with the side walls of the on-off detection needle 21 to maintain a stable conduction state. In addition to adopting a U-shaped structure, the cross-connecting metal piece 11 can also be a circular ring structure or a linear structure, which are equivalent replacement structures that can be easily thought of by those skilled in the art based on this application, and all belong to the protection scope of this patent.

[0029] The contact points 111 on the two side walls of the U-shaped structure of the transverse metal member 11 are outwardly bent V-shaped, arc-shaped, and convex structures.

[0030] One end of the plug 1 can be hingedly connected to one end of the housing of the socket 2. After the plug 1 and the socket 2 are fully plugged in, the other end of the plug 1 can be snap-fitted and connected to the other end of the housing of the socket 2 for positioning. The cross-connecting metal piece 11 is provided on the side wall of the other end of the plug 1, and a pair of on-off detection pins 21 are provided on the other end of the socket 2. Since the other end of the plug 1 is plugged in with the socket 2 last, when the other end of the plug 1 is plugged in place, the plug 1 and the socket 2 have completed the plug-in state. Therefore, it is only necessary to provide the cross-connecting metal piece 11 at the other end of the plug 1, which saves costs and avoids occupying the space of the terminal block.

[0031] The other end of the shell of the socket 2 is provided with a hook structure 22, and the other end of the plug 1 is provided with an elastic arm 12, and a clamping point 121 is provided on the elastic arm 12. When the plug 1 is inserted into the socket 2 by rotating, the clamping point 121 on the elastic arm 12 at the other end of the plug 1 can be snapped and connected with the hook structure 22 at the other end of the shell of the socket 2. Pulling the elastic arm 12 at the other end of the plug 1 can make the clamping point 121 disengage from the hook structure 22. Assuming that the direction where the socket 2 is located is downward and the direction where the plug 1 is located is upward, the cross-connecting metal part 11 is located in the space below the elastic cantilever at the other end of the plug 1. The IO terminal block of the rotating plug-in structure is provided with a cross-connecting metal part at its plug-in end to indicate whether the terminal block is fully inserted into the base. The cross-connecting metal part is placed below the elastic arm 12, occupies little space, and hardly affects the product's external dimensions.

[0032] The plug 1 includes an insulating body 13, an insulating cover 14 and a plug-in terminal 15. The insulating cover 14 can be fixedly inserted into the open portion at the lower end of the insulating body 13. The insulating body 13 and the insulating cover 14 are spliced ​​to form a plurality of terminal accommodating grooves for fixing and positioning each plug-in terminal 15. A protruding plug-in block 141 is provided on the side wall of the insulating cover 14. The cross-connecting metal piece 11 can be sleeved on the outside of the protruding plug-in block 141. A pressure cover structure 131 with an open lower end is provided on the side wall of the insulating body 13. When the insulating cover 14 is inserted into the open portion of the insulating body 13, the protruding plug-in block on the insulating cover 14 and the cross-connecting metal piece 11 thereon can be inserted into the pressure cover structure 131 of the insulating body 13 together. The bottom of the U-shaped structure of the cross-connecting metal piece 11 is tightly clamped between the protruding plug-in block 141 and the pressure cover structure 131. The cross-connecting metal piece 11 and the protruding plug-in block can be inserted into the gap between a pair of on-off detection needles 21 together. The above-mentioned splicing structure can be used to synchronously position the cross-connecting metal parts when the insulating cover 14 is inserted into the open portion of the insulating body 13. This structure makes the installation of the cross-connecting metal parts convenient and increases the assembly efficiency.

[0033] The two opposite side walls of the convex plug block are respectively provided with avoidance grooves 142 facing the two side walls of the U-shaped structure of the transverse metal piece 11. The two side walls of the U-shaped structure of the transverse metal piece 11 can be accommodated in the avoidance grooves 142, and the contact points 111 on the two side walls of the U-shaped structure of the transverse metal piece 11 protrude outside the avoidance grooves 142. When the plug 1 is plugged into the socket 2, the transverse metal piece 11 and the convex plug block are inserted between a pair of on-off detection pins 21. When the contact points 111 of the convex structure on the two side walls of the transverse metal piece 11 contact the on-off detection pins 21, the two side walls of the transverse metal piece 11 can produce elastic deformation to swing toward the inside of the avoidance grooves 142, ensuring the smooth plugging of the plug 1 and the socket 2, avoiding interference or increasing the plugging and unplugging force.

[0034] The lower end of the opening of the escape groove 142 of the protruding plug block is provided with a blocking wall 143, and the ends of the two side walls of the U-shaped structure of the horizontal metal piece 11 are stopped on the blocking wall 143 and cannot escape from the escape groove 142. This structure can prevent the two side walls of the horizontal metal piece 11 from warping outwards and failing to smoothly insert between a pair of continuity detection needles 21.

[0035] The upper end of the convex plug block 141 is formed with a groove 144 matching the cross-connecting metal piece 11, and the bottom of the U-shaped structure and the roots of the two side walls of the cross-connecting metal piece 11 can be accommodated in the groove 144. This structure can stably position the cross-connecting metal piece 11 to prevent its launch tube from shaking.

[0036] The upper end of the continuity detection needle 21 is formed with a chamfered surface 211 with a reduced size. The chamfered surface 211 has a guiding effect on the cross-connecting metal piece 11, thereby ensuring smooth plugging.

Claims

1. A continuity detection structure of an IO terminal block, characterized by: The invention comprises a cross-connecting metal piece (11) fixedly arranged on a plug (1) of an IO terminal block and a pair of on-off detection pins (21) arranged at intervals on a socket (2) of the IO terminal block. When the plug and the socket are plugged in, two ends of the cross-connecting metal piece are respectively in contact with a pair of on-off detection pins on the socket to form a closed path. An on-off signal generating device is formed on the closed path. When the cross-connecting metal piece and the on-off detection pin form a closed path, the on-off signal generating device can generate a plug-in-place signal of the plug and the socket.

2. The on-off detection structure of the IO terminal block according to claim 1 is characterized in that: The cross-connecting metal piece is in a U-shaped structure, and outwardly protruding contact points (111) are respectively formed on the two side walls of the U-shaped structure of the cross-connecting metal piece. The two side walls of the U-shaped structure of the cross-connecting metal piece can be inserted into the gap between a pair of on-off detection needles on the socket, and the contact points on the two side walls of the U-shaped structure of the cross-connecting metal piece can elastically press against the opposite sides of the pair of on-off detection needles on the socket.

3. The on-off detection structure of the IO terminal block according to claim 2 is characterized in that: The contact points on the two side walls of the U-shaped structure of the transverse metal piece are outwardly bent V-shaped, arc-shaped and convex structures.

4. The on-off detection structure of the IO terminal block according to claim 2 is characterized in that: One end of the plug can be hingedly connected to one end of the socket shell. After the plug and the socket are fully plugged in, the other end of the plug can be snap-fitted and connected to the other end of the socket shell for positioning. The cross-connecting metal piece is arranged on the side wall of the other end of the plug, and a pair of continuity detection needles are arranged on the other end of the socket.

5. The on-off detection structure of the IO terminal block according to claim 4 is characterized in that: The other end of the housing of the socket is provided with a hook structure (22), and the other end of the plug is provided with an elastic arm (12), and a clamping point (121) is provided on the elastic arm. When the plug is inserted into the socket by rotating, the clamping point on the elastic arm at the other end of the plug can be engaged and connected with the hook structure at the other end of the housing of the socket, and the clamping point can be disengaged from the hook structure by pulling the elastic arm at the other end of the plug. Assuming that the direction where the socket is located is downward and the direction where the plug is located is upward, the cross-connecting metal part is located in the space below the elastic cantilever at the other end of the plug.

6. The on-off detection structure of the IO terminal block according to claim 2 or 4, characterized in that: The plug comprises an insulating body (13), an insulating cover (14) and a plug-in terminal (15), wherein the insulating cover can be fixedly inserted into the open portion at the lower end of the insulating body, and a plurality of terminal accommodating grooves for fixing and positioning the plug-in terminals are formed between the insulating body and the insulating cover by splicing, and an outer protruding plug-in block (141) is provided on the side wall of the insulating cover, and the transverse metal piece can be sleeved on the outer side of the outer protruding plug-in block, and a pressure cover structure (131) with an opening at the lower end is provided on the side wall of the insulating body, and when the insulating cover is inserted into the open portion of the insulating body, the outer protruding plug-in block on the insulating cover and the transverse metal piece on the insulating cover can be inserted into the pressure cover structure of the insulating body together, and the bottom of the U-shaped structure of the transverse metal piece is tightly clamped between the outer protruding plug-in block and the pressure cover structure, and the transverse metal piece and the outer protruding plug-in block can be inserted into the gap between a pair of on-off detection pins together.

7. The on-off detection structure of the IO terminal block according to claim 6 is characterized by: The two opposite side walls of the external protruding plug block are respectively provided with avoidance grooves (142) facing the two side walls of the transverse metal component U-shaped structure. The two side walls of the transverse metal component U-shaped structure can be accommodated in the avoidance grooves, and the contact points on the two side walls of the transverse metal component U-shaped structure protrude outside the avoidance grooves.

8. The on-off detection structure of the IO terminal block according to claim 7 is characterized in that: A blocking wall (143) is provided at the opening lower end of the escape groove of the externally protruding plug block, and the ends of the two side walls of the U-shaped structure of the transversely connected metal piece are stopped on the blocking wall and cannot escape from the escape groove.

9. The on-off detection structure of the IO terminal block according to claim 6 is characterized in that: A groove (144) matching the transverse metal piece is formed at the upper end of the convex plug-in block, and the bottom of the U-shaped structure of the transverse metal piece and the roots of the two side walls can be accommodated in the groove.

10. The on-off detection structure of the IO terminal block according to claim 1, characterized in that: The upper end of the on-off detection needle forms a chamfered surface (211) with a shrunken size.

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