CN109004479B - Split type short-circuit protection device for storage and transportation launching box - Google Patents
Split type short-circuit protection device for storage and transportation launching box Download PDFInfo
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- CN109004479B CN109004479B CN201810677503.0A CN201810677503A CN109004479B CN 109004479 B CN109004479 B CN 109004479B CN 201810677503 A CN201810677503 A CN 201810677503A CN 109004479 B CN109004479 B CN 109004479B
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- wall
- ejector rod
- short
- contact pin
- pad
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R31/00—Coupling parts supported only by co-operation with counterpart
- H01R31/08—Short-circuiting members for bridging contacts in a counterpart
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
- H01R13/04—Pins or blades for co-operation with sockets
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
- H01R13/42—Securing in a demountable manner
- H01R13/436—Securing a plurality of contact members by one locking piece or operation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/502—Bases; Cases composed of different pieces
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/623—Casing or ring with helicoidal groove
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/639—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap
Abstract
The invention relates to a split short-circuit protection device for a storage and transportation launch box, and belongs to the technical field of bullets and arrows. The short-circuit protection device comprises a protection cap and a short-circuit body; the protective cap comprises a box cover, a screw groove screw, a pressure spring, a mandril, a spring, a plug and a mandril bracket; the short circuit body comprises a supporting frame, a conductive disc, a pin pad, a pin, a pressing ring and a long screw. The short-circuit protection device adopts a split structure of the short-circuit body and the protection cap, so that the short-circuit protection device can be conveniently and quickly disassembled and assembled; the short circuit body is clamped in the protective cap through the pressure spring and the ejector rod, and reliable conduction between all the contact pins and the conducting strips is guaranteed. The short-circuit protection device has reliable short-circuit effect and high safety.
Description
Technical Field
The invention relates to a split short-circuit protection device for a storage and transportation launch box, and belongs to the technical field of bullets and arrows.
Background
Rocket projectiles belong to dangerous initiating explosive devices, and need to carry out short-circuit protection on main engine ignition tools on the projectiles in the processes of storage, transportation and service in order to ensure safety and avoid accidental ignition. At present, the storage and transportation launching box is widely used, and an internal circuit of the rocket projectile is electrically connected with the rocket cannon through a box bottom electric connector. In order to ensure the circuit safety during the storage and transportation of the rocket projectile, a short-circuit protection device needs to be inserted into the electric connector to perform short-circuit protection on a main engine igniter of the rocket projectile. The short-circuit protection device generally adopts a standard electric connector with the tail end of a related contact pin short-circuited by a lead, but a double-cylinder structure with the inner cylinder of the standard electric connector directly moving and aligning and the outer cylinder fixed by knob inevitably influences the positioning of the inner cylinder due to the shielding of the outer cylinder on light, and causes the short-circuit failure due to difficult alignment and even no positioning under the combined influence of narrow bottom space of a box, insufficient illuminance and limited range of limb movement. Meanwhile, the tail end of the pin of the standard electric connector for welding the lead is in a blind hole structure or a round-off concave structure, and the lead is welded in a lap joint mode, so that cold joint is easily caused, or a welding spot is cracked in the transportation and vibration process, so that short circuit failure is caused. In addition, after the tail end of the lead is short-circuited in the standard electric connector, the short-circuit protection device and the engine igniter form a single-ring loop, when the igniter is accidentally connected with external power in series, although the potentials between the two electrodes of the igniter can be ensured to be equal, if the voltage is higher or the power-up time is longer, potential safety hazards also exist.
Disclosure of Invention
The invention aims to solve the defects of difficult insertion, poor reliability and the like of the traditional short-circuit protection device and provides a split short-circuit protection device for a storage and transportation launching box.
The purpose of the invention is realized by the following technical scheme:
the invention relates to a split short-circuit protection device for a storage and transportation launching box, which comprises a protection cap and a short-circuit body;
the protective cap comprises a box cover, a screw groove screw, a pressure spring, a mandril, a spring, a plug and a mandril bracket;
the box cover is of a cylindrical structure with an opening at one end, internal threads are processed on the inner wall of the box cover, and a group of screw holes which are uniformly distributed circumferentially are formed in the side wall of the opening part at the opening end of the box cover;
the outer diameter of the ejector rod support is smaller than the inner diameter of the box cover, the two ends of the ejector rod support are open, an annular connecting part extends outwards in the radial direction from the outer wall of the left end of the ejector rod support, external threads matched with the internal threads of the inner wall of the box cover are machined on the outer wall of the annular connecting part, stepped cylindrical through holes which are uniformly distributed in the circumferential direction are radially formed in the side wall of a right opening part of the ejector rod support, and internal threads are machined on the inner wall of the outer end of a larger;
the ejector rod main body is a cylindrical support rod with the outer diameter matched with the inner diameter of a smaller circular hole at the inner side of the stepped cylindrical through hole of the ejector rod support, and the middle part of the support rod radially extends outwards to form a spring positioning part;
a mandril is placed in each stepped cylindrical through hole of the mandril bracket, the outer end of each mandril is sleeved with a spring, and the outer end of each stepped cylindrical through hole of the mandril bracket is packaged through a plug, so that the inner end of each mandril penetrates out of the inner wall of the mandril bracket under the action of the spring; the ejector rod bracket is screwed into the inner wall of the box cover through the annular connecting part threads, so that the left end of the ejector rod bracket tightly pushes the inner bottom of the box cover; the middle part of the inner bottom of the box cover is fixed with a pressure spring through a screw; each screw hole on the side wall of the opening part of the box cover is connected with a screw with a rotary groove, and the head part of each screw extends out of the inner cavity of the box cover;
a group of wrench holes which are uniformly distributed on the circumference are formed on the right end surface of the annular connecting part of the ejector rod bracket, so that the ejector rod bracket and the box cover can be screwed conveniently;
the short circuit body comprises a conductive disc, a support frame, a pin pad, a pin, a pressing ring and a long screw;
the supporting frame is a cylindrical structure which is made of insulating materials, one end of the cylindrical structure is opened, the outer diameter of the cylindrical structure is smaller than the inner diameter of the ejector rod support, a group of screw holes which are circumferentially distributed are axially formed in the side wall of the supporting frame, and an axially extending guide groove is formed in the outer wall of the supporting frame;
the conductive disc is a disc structure which is processed by conductive materials and has a shape matched with the inner shape of the inner cavity of the support frame;
the needle inserting pad is of a disc structure which is processed by elastic materials and has the outer diameter matched with the outer diameter of the support frame, a needle inserting hole of a step-shaped cylindrical through hole structure is axially formed in the disc surface of the needle inserting pad, an axially extending guide groove is processed in the outer wall of the needle inserting pad, an annular clamping groove is formed in the outer wall of the right end of the needle inserting pad, a group of circumferentially distributed screw holes is axially formed in the bottom of the annular clamping groove, and the circumferential distribution positions of the screw holes and the guide groove on the needle inserting pad are matched with the circumferential distribution positions of the screw holes and the guide groove on the support frame;
the pressing ring is of an annular structure, the shape of the pressing ring is matched with the inner shape of the annular clamping groove of the needle inserting pad, the outer wall of the pressing ring is a conical section, the left end of the conical section is expanded rightwards, the outer wall of the conical section is matched with the ejector rod, namely when the protective cap is screwed into the conical section, which is contacted with the pressing ring, of the ejector rod, the outer wall of the conical section extrudes the ejector rod to move downwards and compress the spring; when the protective cap is screwed in place, the ejector rod moves forward to the right end of the conical section of the pressure ring, and the ejector rod is ejected upwards under the elastic force of the spring to axially limit the pressure ring forwards; the outer wall of the conical section of the pressure ring is provided with an axially extending guide groove; a group of screw holes distributed circumferentially are axially formed on the ring surface of the pressure ring; the circumferential distribution positions of the screw holes and the guide grooves on the compression ring are matched with the circumferential distribution positions of the screw holes and the guide grooves on the support frame;
the front end of the contact pin is a cylindrical section with the outer diameter matched with the inner diameter of the connector jack, the rear end of the contact pin is a stepped cylindrical positioning section matched with the inner shape of the contact pin hole of the contact pin pad, the front end of the positioning section of the contact pin is a forward convergent conical section, and the maximum outer diameter of the conical section is larger than the inner diameter of a smaller round hole at the right end of the contact pin hole of the contact pin pad;
each contact pin is inserted into each contact pin hole of the contact pin pad, and the conical section of each contact pin penetrates through the smaller round hole at the right end of the contact pin hole of the contact pin pad, so that the contact pin and the contact pin pad are axially positioned; the conductive disc is arranged in the inner cavity of the support frame, the pressing ring is sleeved in the annular clamping groove of the needle inserting pad, and the long screw penetrates through the pressing ring, the needle inserting pad and the screw hole of the support frame simultaneously to axially fix the pressing ring, the needle inserting pad and the support frame.
When the short-circuit protection device is installed, firstly, the pressing ring on the short-circuit body, the pin pads and the guide grooves of the support frame are aligned to the convex ribs on the inner wall of the interface of the electric connector socket, and each pin is inserted into the pin hole of the electric connector socket; then aligning each spiral groove screw connected with the side wall of the box cover opening in the protective cap to a spiral guide groove on the outer wall of the electric connector socket interface, screwing the protective cap forwards into the electric connector socket along the spiral guide groove, and pressing the protective cap forwards against the rear end of a support frame in the short circuit body through a pressure spring fixed at the inner bottom of the box cover; when the protective cap is screwed into the conical section of the push rod contacting the press ring, the outer wall of the conical section extrudes the push rod to move downwards and compress the spring; when the screw groove screw of the protective cap is screwed in place, the protective cap is axially positioned relative to the outer wall of the socket interface of the electric connector, the ejector rod moves forwards to the right end of the conical section of the pressing ring, the ejector rod is upwards popped out under the elastic force action of the spring, and the pressing ring is axially limited forwards; the short circuit body enables the conductive disc in the supporting frame to be pressed against the rear end of each contact pin forward under the action of the pressure spring, and reliable conduction between the contact pins is kept.
Advantageous effects
The short-circuit protection device adopts a split structure of the short-circuit body and the protection cap, so that the short-circuit protection device can be conveniently and quickly disassembled and assembled; the short circuit body is clamped in the protective cap through the pressure spring and the ejector rod, and reliable conduction between all the contact pins and the conducting strips is guaranteed. The short-circuit protection device has reliable short-circuit effect and high safety.
Drawings
FIG. 1 is a schematic view of the overall structure of the short-circuit protection device of the present invention;
FIG. 2 is a schematic structural diagram of a protective cap of the short-circuit protection device according to the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2;
FIG. 4 is a schematic structural diagram of a short-circuit body in the short-circuit protection device according to the present invention;
FIG. 5 is a schematic structural diagram of a support frame of the short-circuit protection device of the present invention;
FIG. 6 is a schematic structural diagram of a pincushion in the short-circuit protection device of the present invention;
FIG. 7 is a schematic structural diagram of a pin in the short-circuit protection device of the present invention;
FIG. 8 is a schematic structural diagram of a voltage ring in the short-circuit protection device according to the present invention;
in the figure, 1-protective cap; 2-short-circuit body; 3-a box cover; 4-pressure spring; 5-a top rod; 6-plug by screwing; 7-a mandril bracket; 8-a spring; 9-a screw with a groove; 10-inserting a pin; 11-a needle insertion pad; 12-a pressure ring; 13-long screws; 14-a conductive disc; 15-support frame.
Detailed Description
The invention is further described with reference to the following figures and examples.
Examples
The invention discloses a split short-circuit protection device for a storage and transportation launching box, which comprises a protection cap 1 and a short-circuit body 2, as shown in figure 1;
the protective cap 1 is shown in fig. 2 and 3 and comprises a box cover 3, a screw groove screw 9, a pressure spring 4, a push rod 5, a spring 8, a plug 6 and a push rod support 7;
the box cover 3 is a cylindrical structure with an opening at one end, internal threads are processed on the inner wall of the box cover 3, and a group of screw holes which are uniformly distributed circumferentially are formed on the side wall of the opening part at the opening end of the box cover 3;
the ejector rod support 7 is of a cylindrical structure with the outer diameter smaller than the inner diameter of the box cover 3 and two open ends, the outer wall of the left end of the ejector rod support 7 extends outwards in the radial direction to form an annular connecting part, the outer wall of the annular connecting part is provided with external threads matched with the internal threads of the inner wall of the box cover 3, the side wall of the right port part of the ejector rod support 7 is provided with step-shaped cylindrical through holes which are uniformly distributed in the circumferential direction in the radial direction, and the inner wall of the outer end of a larger round;
the main body of the ejector rod 5 is a cylindrical support rod with the outer diameter matched with the inner diameter of a smaller circular hole at the inner side of a stepped cylindrical through hole of the ejector rod bracket 7, and the middle part of the support rod radially extends outwards to form a spring positioning part;
a mandril is placed in each step-shaped cylindrical through hole of the mandril bracket 7, the outer end of each mandril 5 is sleeved with a spring 8, the outer end of each step-shaped cylindrical through hole of the mandril bracket 7 is packaged by a plug 6, and the inner end of each mandril penetrates out of the inner wall of the mandril bracket 7 under the action of the spring; the ejector rod bracket 7 is screwed into the inner wall of the box cover 3 through the annular connecting part threads, so that the left end of the ejector rod bracket 7 tightly props against the inner bottom of the box cover 3; the middle part of the inner bottom of the box cover 3 is fixed with a pressure spring 4 through a screw; each screw hole on the side wall of the opening part of the box cover 3 is connected with a screw 9, and the head part of each screw 9 extends out of the inner cavity of the box cover 3;
a group of wrench holes which are uniformly distributed on the circumference are formed on the right end surface of the annular connecting part of the ejector rod bracket 7, so that the ejector rod bracket and the box cover can be screwed conveniently;
as shown in fig. 4, the short-circuit body 2 includes a conductive disc 14, a support frame 15, a pin pad 11, a pin 10, a press ring 12, and a long screw 13;
as shown in fig. 5, the support frame 15 is a cylindrical structure processed by an insulating material and having an opening at one end and an outer diameter smaller than the inner diameter of the ejector rod support 7, a set of circumferentially distributed screw holes are axially formed in the side wall of the support frame 15, and an axially extending guide groove is processed in the outer wall of the support frame 15;
the conductive disc 14 is a disc structure which is made of conductive materials and has a shape matched with the inner shape of the inner cavity of the support frame 15;
as shown in fig. 6, the needle inserting pad 11 is a disc structure processed from rubber material and having an outer diameter matched with the outer diameter of the support frame 15, a needle inserting hole of a step-shaped cylindrical through hole structure is axially opened on the disc surface of the needle inserting pad 11, an axially extending guide groove is processed on the outer wall of the needle inserting pad 11, an annular clamping groove is opened on the outer wall of the right end of the needle inserting pad 11, a group of circumferentially distributed screw holes is axially opened at the bottom of the annular clamping groove, and circumferentially distributed positions of the screw holes and the guide groove on the needle inserting pad 11 are matched with circumferentially distributed positions of the screw holes and the guide groove on the support frame 15;
as shown in fig. 8, the pressing ring 12 is a circular ring structure with an outer shape matched with the inner shape of the annular clamping groove of the needle insertion pad 11, the outer wall of the pressing ring 12 is a conical section with a left end expanding rightwards, the outer wall of the conical section is matched with the ejector rod 5, namely when the protective cap 1 is screwed into the conical section of the ejector rod 5 contacting the pressing ring 12, the outer wall of the conical section extrudes the ejector rod 5 to move downwards and compress the spring 8; when the protective cap 1 is screwed in place, the ejector rod 5 moves forward to the right end of the conical section of the pressing ring 12, and the ejector rod is ejected upwards under the elastic force of the spring 8 to axially limit the pressing ring 12 forwards; the outer wall of the conical section of the pressure ring 12 is provided with an axially extending guide groove; a group of screw holes distributed circumferentially are axially formed on the ring surface of the compression ring 12; the circumferential distribution positions of the screw holes and the guide grooves on the compression ring 12 are matched with the circumferential distribution positions of the screw holes and the guide grooves on the support frame 15;
as shown in fig. 7, the front end of the pin 10 is a cylindrical section with an outer diameter matched with the inner diameter of the connector jack, the rear end of the pin 10 is a stepped cylindrical positioning section matched with the inner shape of the pin hole of the pin pad 11, the front end of the positioning section of the pin 10 is a forward convergent conical section, and the maximum outer diameter of the conical section is greater than the inner diameter of a smaller circular hole at the right end of the pin hole of the pin pad 11;
each pin is inserted into each pin hole of the pin pad 11, and the conical section of each pin 10 passes through the smaller round hole at the right end of the pin hole of the pin pad 11, so that the pin 10 and the pin pad 11 are axially positioned; the conductive disc 14 is arranged in the inner cavity of the support frame 15, the press ring 12 is sleeved in the annular clamping groove of the needle inserting pad 11, and the long screw 13 simultaneously penetrates through the screw holes of the press ring 12, the needle inserting pad 11 and the support frame 15, so that the three are axially fixed.
When the short-circuit protection device is installed, firstly, the guide grooves of the upper pressing ring 12, the pin pad 11 and the support frame 15 of the short-circuit body 2 are aligned with the convex ribs on the inner wall of the interface of the electric connector socket, and each pin is inserted into the pin hole of the electric connector socket; then aligning each screw groove screw connected with the side wall of the opening part of the box cover 3 in the protective cap 1 with the spiral guide groove on the outer wall of the interface of the electric connector socket, screwing the protective cap 1 into the electric connector socket along the spiral guide groove, and pressing the protective cap 1 to the rear end of a support frame 15 in the short circuit body 2 forwards through a pressure spring 4 fixed at the inner bottom of the box cover 3; when the protective cap 1 is screwed into the conical section of the ejector rod 5 contacting the press ring 12, the outer wall of the conical section extrudes the ejector rod 5 to move downwards and compress the spring 8; when the screw groove screw of the protective cap 1 is screwed in place, the protective cap 1 is axially positioned relative to the outer wall of the socket interface of the electric connector, at the moment, the ejector rod 5 moves forwards to the right end of the conical section of the pressing ring 12, and the ejector rod 5 is upwards popped up under the elastic action of the spring 8 to axially limit the pressing ring 12 forwards; the short circuit body 2 enables the conductive disc 14 in the supporting frame 15 to be pressed against the rear end of each contact pin forward under the action of the pressure spring 4, and reliable conduction between the contact pins is kept.
Claims (2)
1. A split type short-circuit protection device for a storage and transportation launching box is characterized in that: comprises a protective cap and a short circuit body;
the protective cap comprises a box cover, a screw groove screw, a pressure spring, a mandril, a spring, a plug and a mandril bracket;
the box cover is of a cylindrical structure with an opening at one end, internal threads are processed on the inner wall of the box cover, and a group of screw holes which are uniformly distributed circumferentially are formed in the side wall of the opening part at the opening end of the box cover;
the outer diameter of the ejector rod support is smaller than the inner diameter of the box cover, the two ends of the ejector rod support are open, an annular connecting part extends outwards in the radial direction from the outer wall of the left end of the ejector rod support, external threads matched with the internal threads of the inner wall of the box cover are machined on the outer wall of the annular connecting part, stepped cylindrical through holes which are uniformly distributed in the circumferential direction are radially formed in the side wall of a right opening part of the ejector rod support, and internal threads are machined on the inner wall of the outer end of a larger;
the ejector rod main body is a cylindrical support rod with the outer diameter matched with the inner diameter of a smaller circular hole at the inner side of the stepped cylindrical through hole of the ejector rod support, and the middle part of the support rod radially extends outwards to form a spring positioning part;
a mandril is placed in each stepped cylindrical through hole of the mandril bracket, the outer end of each mandril is sleeved with a spring, and the outer end of each stepped cylindrical through hole of the mandril bracket is packaged through a plug, so that the inner end of each mandril penetrates out of the inner wall of the mandril bracket under the action of the spring; the ejector rod bracket is screwed into the inner wall of the box cover through the annular connecting part threads, so that the left end of the ejector rod bracket tightly pushes the inner bottom of the box cover; the middle part of the inner bottom of the box cover is fixed with a pressure spring through a screw; each screw hole on the side wall of the opening part of the box cover is connected with a screw with a rotary groove, and the head part of each screw extends out of the inner cavity of the box cover;
the short circuit body comprises a conductive disc, a support frame, a pin pad, a pin, a pressing ring and a long screw;
the supporting frame is a cylindrical structure which is made of insulating materials, one end of the cylindrical structure is opened, the outer diameter of the cylindrical structure is smaller than the inner diameter of the ejector rod support, a group of screw holes which are circumferentially distributed are axially formed in the side wall of the supporting frame, and an axially extending guide groove is formed in the outer wall of the supporting frame;
the conductive disc is a disc structure which is processed by conductive materials and has a shape matched with the inner shape of the inner cavity of the support frame;
the needle inserting pad is of a disc structure which is processed by elastic materials and has the outer diameter matched with the outer diameter of the support frame, a needle inserting hole of a step-shaped cylindrical through hole structure is axially formed in the disc surface of the needle inserting pad, an axially extending guide groove is processed in the outer wall of the needle inserting pad, an annular clamping groove is formed in the outer wall of the right end of the needle inserting pad, a group of circumferentially distributed screw holes is axially formed in the bottom of the annular clamping groove, and the circumferential distribution positions of the screw holes and the guide groove on the needle inserting pad are matched with the circumferential distribution positions of the screw holes and the guide groove on the support frame;
the pressing ring is of an annular structure, the shape of the pressing ring is matched with the inner shape of the annular clamping groove of the needle inserting pad, the outer wall of the pressing ring is a conical section, the left end of the conical section is expanded rightwards, the outer wall of the conical section is matched with the ejector rod, namely when the protective cap is screwed into the conical section, which is contacted with the pressing ring, of the ejector rod, the outer wall of the conical section extrudes the ejector rod to move downwards and compress the spring; when the protective cap is screwed in place, the ejector rod moves forward to the right end of the conical section of the pressure ring, and the ejector rod is ejected upwards under the elastic force of the spring to axially limit the pressure ring forwards; the outer wall of the conical section of the pressure ring is provided with an axially extending guide groove; a group of screw holes distributed circumferentially are axially formed on the ring surface of the pressure ring; the circumferential distribution positions of the screw holes and the guide grooves on the compression ring are matched with the circumferential distribution positions of the screw holes and the guide grooves on the support frame;
the front end of the contact pin is a cylindrical section with the outer diameter matched with the inner diameter of the connector jack, the rear end of the contact pin is a stepped cylindrical positioning section matched with the inner shape of the contact pin hole of the contact pin pad, the front end of the positioning section of the contact pin is a forward convergent conical section, and the maximum outer diameter of the conical section is larger than the inner diameter of a smaller round hole at the right end of the contact pin hole of the contact pin pad;
each contact pin is inserted into each contact pin hole of the contact pin pad, and the conical section of each contact pin penetrates through the smaller round hole at the right end of the contact pin hole of the contact pin pad, so that the contact pin and the contact pin pad are axially positioned; the conductive disc is arranged in the inner cavity of the support frame, the pressing ring is sleeved in the annular clamping groove of the needle pad, the long screws penetrate through the pressing ring, the needle pad and the screw holes of the support frame simultaneously, the pressing ring, the needle pad and the support frame are axially fixed, and the short circuit body enables the conductive disc in the support frame to push the rear ends of the contact pins forward tightly under the action of the pressure spring, so that reliable conduction among the contact pins is kept.
2. The split short-circuit protection device for storage and transportation launch boxes according to claim 1, characterized in that: the right end surface of the annular connecting part of the mandril bracket is provided with a group of wrench holes which are uniformly distributed on the circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810677503.0A CN109004479B (en) | 2018-06-27 | 2018-06-27 | Split type short-circuit protection device for storage and transportation launching box |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810677503.0A CN109004479B (en) | 2018-06-27 | 2018-06-27 | Split type short-circuit protection device for storage and transportation launching box |
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| CN109004479A CN109004479A (en) | 2018-12-14 |
| CN109004479B true CN109004479B (en) | 2019-12-24 |
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| CN201810677503.0A Active CN109004479B (en) | 2018-06-27 | 2018-06-27 | Split type short-circuit protection device for storage and transportation launching box |
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| CN110265824B (en) * | 2019-07-09 | 2021-02-12 | 北京电子工程总体研究所 | High-frequency high-voltage gas-electric mixed-loading transmitting electric connector |
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| CN202949105U (en) * | 2012-12-11 | 2013-05-22 | 施多财 | Socket used for automatic short-circuit protection |
| CN203312536U (en) * | 2013-05-15 | 2013-11-27 | 深圳市深科医疗器械技术开发有限公司 | Medical instrument and power socket structure thereof |
| CN203813043U (en) * | 2014-05-14 | 2014-09-03 | 晋西工业集团有限责任公司 | Antistatic conductive cover of civil rocket projectile |
| CN107768927A (en) * | 2017-10-24 | 2018-03-06 | 浩亭(珠海)制造有限公司 | Connection method of the Ethernet short with shielded connector and connector and cable |
| CN207530209U (en) * | 2017-12-15 | 2018-06-22 | 常州琥正电子科技有限公司 | Plug |
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|---|---|
| CN109004479A (en) | 2018-12-14 |
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