CN212079890U - Anti-dismantling semi-insulating switch type fixing bolt for electrical equipment - Google Patents
Anti-dismantling semi-insulating switch type fixing bolt for electrical equipment Download PDFInfo
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- CN212079890U CN212079890U CN202020566780.7U CN202020566780U CN212079890U CN 212079890 U CN212079890 U CN 212079890U CN 202020566780 U CN202020566780 U CN 202020566780U CN 212079890 U CN212079890 U CN 212079890U
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Abstract
The utility model discloses a prevent tearing open semi-insulating switch type fixing bolt for electrical equipment. The fixing bolt comprises a screw head and a screw rod, wherein the screw rod is a cylinder and is divided into an upper section and a lower section, the upper section connected with the screw head is a semi-insulating area, and the lower section is a thread; a longitudinal section of the semi-insulating region divides the outer wall of the semi-insulating region into two parts, one part is a conductor region, and the other part is an insulator region; when the bolt is rotated, the conductor area can be conducted with the two wire contacts, so that a trigger signal is generated, and safety protection is performed on the electrical equipment according to the trigger signal. The utility model has the advantages that the bolts pass through the fixing holes, the insulating surface faces to the appointed direction according to the needs, and the corresponding nuts are fixed, so that the installation and the disassembly are convenient; the device can be made into different sizes and shapes according to the size of the device, and has strong universality; simple structure, it is with low costs, prevent tearing open the effect and showing.
Description
Technical Field
The utility model relates to a bolt technical field, especially a prevent tearing open semi-insulating switch type fixing bolt for electrical equipment.
Background
Almost all electrical equipment today is composed of a number of different components that are bolted together by fastening bolts, and many electrical equipment do not allow non-professional disassembly or alarm indication during disassembly in order to ensure safe use of the equipment. To prevent the disassembly of the fastening bolt, a currently more common method includes: (1) dispensing glue on the threads to ensure that the bolts cannot be disassembled after being fastened; (2) making the bolt as a hidden head to prevent the bolt from being unscrewed reversely; (3) the disassembly is performed using a special wrench. These methods have a positive effect on the safe use of the device, but also add a lot of trouble when the device needs to be disassembled.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a can effectively prevent the preventing tearing open semi-insulating switch type fixing bolt who is used for electrical equipment of maliciously dismantlement, and can conveniently dismantle when equipment needs dismantle.
Realize the utility model discloses the technical solution of purpose does: an anti-dismantling semi-insulating switch type fixing bolt for electrical equipment comprises a screw head and a screw rod, wherein the screw rod is a cylinder and is divided into an upper section and a lower section, the upper section connected with the screw head is a semi-insulating area, and the lower section is a thread;
a longitudinal section of the semi-insulating region divides the outer wall of the semi-insulating region into two parts, one part is a conductor region, and the other part is an insulator region; when the bolt is rotated, the conductor area can conduct two wire contacts, so that the two wires are short-circuited.
Further, the bolt is provided with a matching nut.
Furthermore, the electrical equipment is provided with a guide hole matched with the fixing bolt, the upper part of the guide hole is a smooth hole section, the lower part of the guide hole is a threaded hole section, and the smooth hole section is provided with 2 wire contacts and an annular groove; and 2 wire contacts are positioned on the annular groove, the included angle alpha of the radius of the 2 wire contacts is less than 30 degrees, and marks are arranged at the corresponding positions of the outer wall of the guide hole and the wire contacts and are used for aligning with the insulator region.
Furthermore, the central angle corresponding to the arc where the cross section of the conductor region is located is β, and β is greater than the included angle α of the radii where the 2 wire contacts are located.
Further, the length of the semi-insulating area is smaller than that of the smooth hole section and is larger than the distance from the wire contact to the upper end face of the guide hole.
Further, an insulation mark is arranged on the screw head and used for aligning the insulator region of the semi-insulation region with the wire contact.
Compared with the prior art, the utility model, it is showing the advantage and lies in: (1) the bolts penetrate through the fixing holes, the insulating surface faces to the designated direction according to the requirement, and then the corresponding nuts are fixed, so that the mounting and dismounting are convenient; (2) the device can be made into different sizes and shapes according to the size of the device, and has strong universality; (2) simple structure, it is with low costs, prevent tearing open the effect and showing.
Drawings
Fig. 1 is the utility model discloses a prevent tearing open semi-insulating switch type fixing bolt's for electrical equipment structural schematic.
Fig. 2 is a schematic structural view of the self-destruct seal safety protection system for preventing the memory chip from being disassembled in the embodiment of the present invention.
Fig. 3 is a schematic cross-sectional view of the middle fixing lug of the present invention.
Detailed Description
With reference to fig. 1, the utility model relates to an anti-dismantling semi-insulating switch type fixing bolt for electrical equipment, which comprises a screw head 2 and a screw rod 4, wherein the screw rod 4 is a cylinder and is divided into an upper section and a lower section, the upper section connected with the screw head 2 is a semi-insulating region 5, and the lower section is a thread 6;
a longitudinal section of the semi-insulating region 5 divides the outer wall of the semi-insulating region 5 into two parts, one part is a conductor region, and the other part is an insulator region; when the bolt is rotated, the conductor area can be conducted with the two wire contacts, so that a trigger signal is generated, and safety protection is performed on the electrical equipment according to the trigger signal.
Further, the bolt is provided with a matching nut 1.
Furthermore, the electrical equipment is provided with a guide hole matched with the fixing bolt, the upper part of the guide hole is a smooth hole section 7, the lower part of the guide hole is a threaded hole section 9, and the smooth hole section 7 is provided with 2 wire contacts 8 and an annular groove 10; 2 wire contacts 8 are positioned on the annular groove 10, the included angle alpha of the radius of the 2 wire contacts 8 is less than 30 degrees, and marks are arranged on the outer wall of the guide hole and the positions corresponding to the wire contacts 8 and used for aligning with the insulator area.
Further, the central angle corresponding to the arc of the cross section of the conductor region is β, and β is greater than the included angle α of the radii of the 2 wire contacts 8.
Further, the length of the semi-insulating region 5 is smaller than the length of the smooth hole section 7 and is larger than the distance from the wire contact 8 to the upper end face of the via.
Further, the screw head 2 is provided with an insulation mark 3 for aligning the insulator region of the semi-insulating region 5 with the wire contact 8.
The utility model relates to a prevent tearing open semi-insulating switch type fixing bolt's use as follows for electrical equipment: the screw 4 is completely screwed into the guide hole, the insulator area of the semi-insulating area 5 in the screw 4 is aligned with the wire contact 8, and then the system is fixed by using the nut 1; and detecting whether the wire contact 8 is short-circuited or not, generating a trigger signal if the wire contact is short-circuited, carrying out safety protection on the electrical equipment according to the trigger signal, and triggering the self-destruction device to carry out self-destruction operation or sending an alarm signal.
Examples
The following describes the specific application of the fastening bolt of the present invention in detail by taking the memory chip tamper self-destruction seal body safety protection system as an example.
With reference to fig. 2, the security protection system for the tamper-proof self-destructive sealing body of the memory chip includes an upper casing and a lower casing which are nested into one body, and the bottom openings of the upper casing and the lower casing form a hollow cavity; the whole system is fixed on a circuit board using a memory chip through a fixing bolt, and the memory chip is sealed in a hollow cavity of the lower shell;
a gap is formed between the upper shell and the lower shell, a communicated space is formed by the gap, and a wire mesh layer is arranged in the communicated space, wherein the wire mesh layer is laid on the inner wall of the upper shell and is attached to the inner wall of the upper shell; a power module, a self-destruction device and an internal control module are arranged in the hollow cavity of the lower shell.
A shoulder is arranged at the lower port of the upper shell, and fixing support lugs are arranged at 4 corners outside the shoulder and used for fixing the system on a corresponding circuit board.
The fixing bolts comprise screw heads 2 and screw rods 4, and each fixing bolt is provided with a matched screw cap 1;
the screw 4 is a cylinder and is divided into an upper section and a lower section, the upper section connected with the screw cap 1 is a semi-insulating area 5, and the lower section is a thread 6; a longitudinal section of the semi-insulating region 5 divides the outer wall of the semi-insulating region 5 into two parts, one part is a conductor region and the other part is an insulator region.
Referring to fig. 3, a guide hole is formed in the center of the fixed lug, the upper part of the guide hole is a smooth hole section 7, the lower part of the guide hole is a threaded hole section 9, 2 wire contacts 8 and an annular groove 10 are arranged on the smooth hole section 7, and the wire contacts 8 are insulated from the upper shell; the 2 lead contacts 8 are located on the annular groove 10, the annular groove 10 can be an unclosed annular groove, and the 2 adjacent lead contacts 8 are arranged on the unclosed section and can be in a transverse direction or a longitudinal direction. The included angle alpha of the radius of the 2 wire contacts 8 is less than 30 degrees, and a mark is arranged at the position, corresponding to the wire contacts 8, of the outer wall of the fixed support lug and is used for being aligned with the insulating surface of the fixed bolt.
Further, the length of the semi-insulating region 5 is less than that of the smooth hole section 7 and greater than the distance from the lead contact 8 to the upper end face of the guide hole;
furthermore, the central angle corresponding to the arc of the cross section of the conductor region is β, which is greater than the included angle α of the radii of the 2 wire contacts 8.
The lead wire net layer comprises two lead wire layers separated by an insulating layer, and lead wires of the two lead wire layers are respectively connected with corresponding lead wire contacts; when the fixing bolt rotates, the two lead contacts are connected by the fixing bolt, so that the two lead layers are disconnected after being communicated.
Further, the conductor region corresponds to the insulator region, which may be an insulating coating, or the screw 4 itself may be a cylinder divided into two parts by a longitudinal section, one being a conductor and the other being an insulator. The screw rod 4 can not be directly inserted into the guide hole arranged in the center of the fixed support lug, the screw rod 4 is inserted into the smooth hole section 7 of the guide hole, and the threaded hole section 9 must be screwed in, so that the conductor area of the screw rod 4 is repeatedly contacted with the 2 wire contacts 8 in the insulator area, if the system starts to work, the 2 wire contacts 8 are simultaneously contacted by the conductor area, the system can be communicated and triggered to explode automatically, when at least one of the 2 wire contacts 8 is in the insulator area, the two wire contacts 8 are not communicated, and the system is in a protection state after working, so that after the system is started, the fixed bolt plays a role in preventing disassembly.
Further, the screw head 2 is provided with an insulation mark 3 for aligning the insulator region of the semi-insulating region 5 with the wire contact 8.
The lead wire net layer is led out from the fixed support lug of the upper shell, and the lead-out wires of the first lead wire layer and the second lead wire layer are connected with 2 lead wire contacts 8 after being wound around the annular groove 10.
Further, when the fixing bolt is fixed, the insulator region of the semi-insulating region 5 is in contact with at least one wire contact 8; when the fixing bolt is rotated, the two conductor contacts 8 are conducted by the conductor region of the semi-insulating region 5, so that the first conductor layer and the second conductor layer are communicated.
First wire layer and second wire layer draw forth a wire respectively in four fixed journal stirrup departments, like this, the wire will lead to two wire layer intercommunications because of cutting or other modes at arbitrary moment, and the lead-out wire on two wire layers is respectively around the annular groove by the cutting with preventing fixed journal stirrup, is connected with 2 wire contact 8 respectively after around a week, and wire contact 8 is inside, prevents to cut between 2 wire contact 8.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application.
Claims (6)
1. An anti-dismantling semi-insulating switch type fixing bolt for electrical equipment is characterized by comprising a screw head (2) and a screw rod (4), wherein the screw rod (4) is a cylinder and is divided into an upper section and a lower section, the upper section connected with the screw head (2) is a semi-insulating area (5), and the lower section is a thread (6);
the outer wall of the semi-insulating region (5) is divided into two parts by a longitudinal section of the semi-insulating region (5), wherein one part is a conductor region, and the other part is an insulator region; when the bolt is rotated, the conductor area can conduct two wire contacts, so that the two wires are short-circuited.
2. Tamper semi-insulating switch type fixing bolt for electrical equipment according to claim 1, characterised in that it is provided with a matching nut (1).
3. The tamper-evident semi-insulating switch type fixing bolt for electrical equipment according to claim 1 or 2, wherein the electrical equipment is provided with a guide hole matched with the fixing bolt, the upper part of the guide hole is a smooth hole section (7), the lower part of the guide hole is a threaded hole section (9), and the smooth hole section (7) is provided with 2 wire contacts (8) and an annular groove (10); the 2 wire contacts (8) are positioned on the annular groove (10), the included angle alpha of the radius of the 2 wire contacts (8) is less than 30 degrees, and marks are arranged on the outer wall of the guide hole and the corresponding positions of the wire contacts (8) and are used for aligning with the insulator region.
4. The tamper-evident semi-insulating switch-type fixing bolt for electrical equipment according to claim 3, characterized in that the arc of the cross-section of the conductor area corresponds to a central angle β, β being greater than the angle α of the radius of the 2 conductor contacts (8).
5. The tamper semi-insulating switch type fixing bolt for electrical equipment according to claim 3, characterized in that the length of the semi-insulating area (5) is smaller than the length of the smooth bore section (7) and larger than the distance of the wire contact (8) to the upper end face of the guide hole.
6. Tamper evident semi-insulating switch type fixing bolt for electrical equipment according to claim 4 or 5, characterized in that the screw head (2) is provided with an insulating mark (3) for aligning the insulator region of the semi-insulating region (5) with the wire contact (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020566780.7U CN212079890U (en) | 2020-04-16 | 2020-04-16 | Anti-dismantling semi-insulating switch type fixing bolt for electrical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020566780.7U CN212079890U (en) | 2020-04-16 | 2020-04-16 | Anti-dismantling semi-insulating switch type fixing bolt for electrical equipment |
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| CN212079890U true CN212079890U (en) | 2020-12-04 |
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| CN202020566780.7U Active CN212079890U (en) | 2020-04-16 | 2020-04-16 | Anti-dismantling semi-insulating switch type fixing bolt for electrical equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111365348A (en) * | 2020-04-16 | 2020-07-03 | 泰鑫高科(北京)技术有限公司 | Anti-dismantling semi-insulating switch type fixing bolt for electrical equipment |
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2020
- 2020-04-16 CN CN202020566780.7U patent/CN212079890U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111365348A (en) * | 2020-04-16 | 2020-07-03 | 泰鑫高科(北京)技术有限公司 | Anti-dismantling semi-insulating switch type fixing bolt for electrical equipment |
| CN111365348B (en) * | 2020-04-16 | 2024-05-28 | 南京瑞浦景科技有限公司 | Anti-disassembly semi-insulating switch type fixing bolt for electrical equipment |
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