CN214254290U - Conductive terminal anti-drop electromagnetic relay - Google Patents
Conductive terminal anti-drop electromagnetic relay Download PDFInfo
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- CN214254290U CN214254290U CN202120348170.4U CN202120348170U CN214254290U CN 214254290 U CN214254290 U CN 214254290U CN 202120348170 U CN202120348170 U CN 202120348170U CN 214254290 U CN214254290 U CN 214254290U
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Abstract
The utility model relates to the technical field of relays, in particular to a conductive terminal anti-drop electromagnetic relay, which comprises an insulator, an electromagnet and a terminal unit which are arranged on the insulator, and an armature which is movably arranged; the insulator comprises a base part, a positioning plate arranged at an interval with the base part, and a core column connecting the base part and the positioning plate, wherein the electromagnet is provided with an iron core, a coil and a yoke iron; the movable terminal comprises a movable spring and a first welding leg which are arranged at the other end of the yoke, and the armature is arranged on the movable spring; the base part is provided with an accommodating cavity, the static terminal is provided with a contact part exposed in the accommodating cavity and a second welding leg formed by bending the contact part, one end of the movable spring leaf, which is far away from the yoke, extends into the accommodating cavity and is used for conducting or disconnecting the contact part, and the first welding leg and the second welding leg extend out of the base part and are used for being welded on an external circuit board; the structural design of the electromagnetic relay is simplified, and the manufacturing efficiency is improved; the first solder leg is fixed by the yoke and is prevented from falling off from the insulator by the base portion stopping against the contact portion.
Description
Technical Field
The utility model relates to a relay technical field especially discloses a conductive terminal anticreep formula electromagnetic relay.
Background
The relay is one of the switch spare that is used for control circuit break-make, and the kind of relay is various, and electromagnetic relay is just one kind of relay commonly used, and a plurality of insulating blocks of electromagnetic relay are assembled each other and are formed among the prior art, and the structure is complicated, and manufacturing efficiency is low. And the terminal is not firmly installed and is easy to fall off.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects and shortcomings in the prior art, the utility model aims to provide a conductive terminal anti-drop electromagnetic relay, which simplifies the structural design of the electromagnetic relay and improves the manufacturing efficiency; the first solder leg is fixed by the yoke and is prevented from falling off from the insulator by the base portion stopping against the contact portion.
In order to achieve the above object, the present invention provides a conductive terminal anti-drop electromagnetic relay, including an insulator, an electromagnet and a terminal unit disposed on the insulator, and an armature movably disposed on the terminal unit, wherein the terminal unit has a movable terminal and a stationary terminal disposed on the insulator, and the electromagnet drives the movable terminal to turn on or off the stationary terminal via the armature; the insulator comprises a base part, a positioning plate arranged at an interval with the base part, and a core column connecting the base part and the positioning plate, the electromagnet is provided with an iron core, a coil and a yoke, the iron core penetrates through the core column, the coil is sleeved on the outer side of the core column and positioned between the base part and the positioning plate, and the coil is arranged around the iron core; one end of the yoke iron is arranged at one end of the iron core which protrudes out of the positioning plate, the movable terminal comprises a movable spring piece and a first welding leg which are arranged at the other end of the yoke iron, the armature iron is arranged on the movable spring piece, and the other end of the iron core protrudes out of the base part and is used for attracting the armature iron so that the armature iron butts against the other end of the iron core and the other end of the yoke iron; the base part is provided with an accommodating cavity, the static terminal is provided with a contact part exposed in the accommodating cavity and a second welding leg formed by bending the contact part, one end of the movable spring leaf, which is far away from the yoke, extends into the accommodating cavity and is used for conducting or disconnecting the contact part, and the first welding leg and the second welding leg extend out of the base part and are used for being welded on an external circuit board.
The iron core comprises a plate body part and a core rod part arranged on the plate body part, the outer diameter of the plate body part is larger than that of the core rod part, one end, far away from the plate body part, of the core rod part protrudes out of the positioning plate and is arranged on the yoke, the bottom surface of the accommodating cavity is used for stopping and abutting against the plate body part, and the plate body part is used for attracting the armature.
The base part is provided with a yielding blind hole which is concavely arranged from the bottom surface of the containing cavity and a conical bulge which is positioned in the yielding blind hole, the conical bulge is arranged on the bottom surface of the yielding blind hole, the outer diameter of one end, close to the bottom surface of the yielding blind hole, of the conical bulge is larger than the outer diameter of one end, far away from the bottom surface of the yielding blind hole, of the conical bulge, and the free end of the conical bulge is used for abutting against the plate body part.
The base part is provided with containing holes communicated with the containing cavity, the number of the static terminals is two, the contact parts of the two static terminals are respectively attached to the inner side walls of the two sides of the containing holes far away from each other, one end, far away from the yoke, of the movable spring piece is located in the containing hole and located between the contact parts of the two static terminals, the movable spring piece is used for conducting one static terminal, and the second welding feet of the two static terminals extend out of the two sides, far away from the same end of the base part, of the second welding feet of the two static terminals.
The cover plate is characterized by further comprising a cover plate, elastic buckles are arranged on two sides, far away from each other, of the cover plate, the base portion is provided with two buckling holes, the cover plate is connected with the base portion in a buckling mode, the elastic buckles on the two sides of the cover plate are buckled into the two buckling holes respectively, and the cover plate is used for covering the opening of the accommodating cavity.
The cover plate is provided with a positioning bulge positioned in the accommodating cavity, the movable spring piece is provided with a convex piece part attached to the armature, one end of the armature is provided with a positioning column penetrating through the convex piece part, and the free end of the positioning bulge is abutted against the convex piece part and enables one end of the armature to be pressed and held at one end of the yoke.
The power supply terminal is provided with a clamping part arranged on the base part, a wiring part arranged on the clamping part, a bent part bent from the clamping part and a third welding leg arranged on the bent part, wherein the third welding leg penetrates through the cover plate and protrudes out of the middle part of the base part, and the cover plate is used for abutting against the bent part.
The wiring portion is provided with a spiral blind groove, the spiral blind groove is formed by the concave arrangement of the outer surface of the wiring portion, the spiral blind groove extends along the length direction of the wiring portion, the two ends of the coil are spirally wound on the outer side of the wiring portion and are located in the spiral blind groove, and the spiral blind groove is used for accommodating soldering tin of the coil and the wiring portion.
The plastic shell is sleeved outside the insulator and is used for accommodating concave holes of the insulator, the electromagnet, the terminal unit and the armature; the positioning plate is provided with a positioning blind groove, the positioning blind groove is used for accommodating one end of the yoke, and the side surface of an inner groove of the positioning blind groove is used for blocking the yoke; the yoke iron protrudes out of the positioning plate and abuts against the bottom surface of the concave hole, the plastic shell is provided with a clamping groove communicated with the concave hole, and one end of the core rod part protrudes out of the yoke iron and extends into the clamping groove.
Wherein, the plastic shell is provided with a breather hole communicated with the concave hole, and the breather hole is used for penetrating through the side wall of the plastic shell; along the central axis direction of the air holes, the air holes are wavy.
The utility model has the advantages that: all parts of the electromagnetic relay are arranged on the insulator, and the electromagnetic relay is formed without splicing and assembling a plurality of insulating blocks, so that the structural design of the electromagnetic relay is simplified, and the manufacturing efficiency is improved; the first welding leg is fixed by the yoke iron, and the contact part is blocked and abutted by the base part, so that the welding leg is prevented from falling off from the insulator, and the stable fixed installation of the terminal is realized.
Drawings
Fig. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic view of the exploded structure of the present invention;
fig. 3 is a schematic diagram of the explosion structure of the present invention;
fig. 4 is an exploded view of the present invention from another perspective;
fig. 5 is a partial cross-sectional enlarged view of the plastic shell of the present invention.
The reference numerals include:
1-insulator 2-movable terminal 3-static terminal
4-base 5-positioning plate 6-core column
7-iron core 8-coil 9-yoke
11-movable spring 12-first welding leg 13-armature
14-contact portion 15-second solder foot 16-plate body portion
17-core rod part 18-conical projection 19-containing hole
21-cover plate 22-elastic buckle 23-positioning bulge
24-power supply terminal 25-bent part 26-third leg
27-plastic shell 28-breather hole.
Detailed Description
In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and accompanying drawings, which are not intended to limit the present invention.
Referring to fig. 1 to 5, the conductive terminal anti-drop electromagnetic relay of the present invention includes an insulator 1, an electromagnet and a terminal unit installed on the insulator 1, an armature 13 movably disposed, the terminal unit having a movable terminal 2 and a stationary terminal 3 disposed on the insulator 1, the electromagnet driving the movable terminal 2 to turn on or turn off the stationary terminal 3 via the armature 13.
The insulator 1 comprises a base 4, a positioning plate 5 arranged at a distance from the base 4, and a stem 6 connecting the base 4 and the positioning plate 5, preferably, the base 4 and the positioning plate 5 are arranged in parallel, the insulator 1 is made of insulating plastic, for example, the insulator 1 is injection molded by an injection mold, and the insulator 1 is substantially in an i shape.
The electromagnet is provided with an iron core 7, a coil 8 and a yoke 9, wherein the iron core 7 is installed in the insulator 1, the iron core 7 penetrates through the core column 6, the coil 8 is sleeved on the outer side of the core column 6 and is located between the base part 4 and the positioning plate 5, two ends of the coil 8 are blocked and abutted by the base part 4 and the positioning plate 5, and the coil 8 is arranged around the iron core 7.
One end of the yoke 9 is installed on one end of the iron core 7 protruding out of the positioning plate 5, the movable terminal 2 comprises a movable spring piece 11 and a first welding leg 12 which are arranged on the other end of the yoke 9, in the embodiment, the other end of the yoke 9 is provided with a riveting column, the movable spring piece 11 and the first welding leg 12 are provided with riveting holes for accommodating the riveting column, and the yoke 9, the movable spring piece 11 and the first welding leg 12 are riveted together.
The armature 13 is arranged on the movable spring 11, and the other end of the iron core 7 protrudes out of the base 4 and is used for attracting the armature 13 so that the armature 13 abuts against the other end of the iron core 7 and the other end of the yoke 9; the base 4 is provided with a containing cavity which is formed by being concavely arranged from one side of the base 4 far away from the positioning plate 5.
The static terminal 3 has a contact part 14 exposed in the accommodating cavity and a second solder leg 15 bent from the contact part 14, one end of the movable spring 11 far from the yoke 9 protrudes into the accommodating cavity and is used for connecting or disconnecting the contact part 14, and the first solder leg 12 and the second solder leg 15 protrude out of the base part 4 and are used for being soldered on an external circuit board.
All parts of the electromagnetic relay are arranged on the insulator 1, and the electromagnetic relay is formed without splicing and assembling a plurality of insulating blocks, so that the structural design of the electromagnetic relay is simplified, and the manufacturing efficiency is improved; the first solder leg 12 is fixed by the yoke 9, and the contact portion 14 is blocked by the base portion 4, so that the solder leg is prevented from falling off from the insulator 1, and the terminal is stably fixed and mounted.
The iron core 7 comprises a plate body part 16 and a core rod part 17 arranged on the plate body part 16, the iron core 7 is T-shaped, the iron core 7 is of an integral structure, the outer diameter of the plate body part 16 is larger than that of the core rod part 17, the plate body part 16 is a rectangular plate approximately, the cross section of the core rod part 17 is rectangular, the inner side surface of the core column 6 is blocked and abutted against the outer surface of the core rod part 17, and the core rod part 17 is prevented from rotating relative to the insulator 1.
One end of the core rod part 17, which is far away from the plate body part 16, protrudes out of the positioning plate 5 and is riveted on the yoke 9, the bottom surface of the accommodating cavity is used for stopping and abutting against the plate body part 16, so that the insulator 1 is ensured to be stably clamped between the yoke 9 and the plate body part 16, and the plate body part 16 is used for attracting the armature 13. By virtue of the structural design of the plate portion 16, the adsorption area of the iron core 7 to the armature 13 is increased, so that the iron core 7 can firmly adsorb the armature 13, and the terminal unit is stably kept in a required on state or off state.
The base portion 4 is provided with a yielding blind hole which is concavely arranged on the bottom surface of the accommodating cavity and a conical protrusion 18 which is positioned in the yielding blind hole, the conical protrusion 18 is arranged on the bottom surface of the yielding blind hole, the outer diameter of one end, close to the bottom surface of the yielding blind hole, of the conical protrusion 18 is larger than the outer diameter of one end, far away from the bottom surface of the yielding blind hole, of the conical protrusion 18, and the free end of the conical protrusion 18 is used for abutting against the plate body portion 16.
Through the arrangement of the conical protrusion 18, when the insulator 1, the iron core 7 and the yoke 9 are installed together, the plate body 16 can extrude and crush the conical protrusion 18, and the damaged conical protrusion 18 is accommodated in the yielding blind hole, so that the three are stably installed together, the plate body 16 and the bottom surface of the accommodating cavity are prevented from having a gap and being unstably fixed, and the electromagnetic relay is ensured to be stably assembled together.
The base part 4 is provided with accommodating holes 19 communicated with the accommodating cavity, the number of the static terminals 3 is two, the contact parts 14 of the two static terminals 3 are respectively attached to the inner side walls of the two sides of the accommodating holes 19, the end, far away from the yoke 9, of the movable spring piece 11 is located in the accommodating hole 19 and located between the contact parts 14 of the two static terminals 3, the movable spring piece 11 is used for conducting one static terminal 3, and the second welding feet 15 of the two static terminals 3 protrude out of the two sides, far away from the same end of the base part 4, of the two static terminals 3.
When the iron core 7 attracts the armature 13 to make the movable spring 11 move to abut against the contact part 14 of one of the fixed terminals 3, the inner side surface of the accommodating hole 19 stably abuts against the contact part 14, so that the contact part 14 is prevented from moving or deforming due to the impact of the movable spring 11, the terminal unit is ensured to be stably connected or disconnected, and the use performance of the electromagnetic relay is improved.
Still include apron 21, the main part profile of apron 21 is flat, and the both sides that apron 21 kept away from each other all are equipped with elastic buckle 22, and base 4 has two detain the hole, and apron 21 is connected with base 4 buckle, promotes installation effectiveness or the dismantlement efficiency between them, and two detain the hole respectively in the elastic buckle 22 of apron 21 both sides, and apron 21 is used for hiding the opening of holding the chamber. The outside sundries are prevented from entering the accommodating cavity, the creepage distance between the terminal and the outside component is increased by means of the cover plate 21, and the use safety of the terminal unit is ensured.
The cover plate 21 is provided with a positioning bulge 23 positioned in the accommodating cavity, the movable spring 11 is provided with a convex piece part attached to the armature 13, one end of the armature 13 is provided with a positioning column penetrating through the convex piece part, and the free end of the positioning bulge 23 abuts against the convex piece part and enables one end of the armature 13 to be pressed and held on one end of the yoke 9.
By means of the matching of the positioning column and the protruding piece part, the movable spring 11 and the armature 13 are accurately installed together, and by means of the arrangement of the positioning protrusion 23, the positioning protrusion 23 can stably press and hold the movable spring 11 and the armature 13 on the yoke 9, so that the phenomenon that the armature 13 is separated from the yoke 9 to cause the open circuit of the magnetic circuit structure of the electromagnet is avoided, and the use stability of the magnetic circuit of the electromagnet is ensured.
The power supply terminal 24 comprises a clamping part arranged on the base 4, a wiring part arranged on the clamping part, a bent part 23 bent from the clamping part, and a third welding leg 26 arranged on the bent part 23, wherein the third welding leg 26 penetrates through the cover plate 21 and protrudes out of the middle part of the base 4, and the cover plate 21 is used for abutting against the bent part 23.
The first solder leg 12, the second solder leg 15 and the third solder leg 26 respectively protrude out of the head, the middle and the tail of the insulator 1, so that the insulator 1 is stably fixed on an external circuit board. By the arrangement of the bent portion 23, the cover plate 21 is stopped against the bent portion 23, and the power terminal 24 is prevented from falling off from the insulator 1.
Wiring portion has spiral blind groove, and spiral blind groove is established from the surface of wiring portion is concave to form, and spiral blind groove extends the setting along the length direction of wiring portion, and coil 8's both ends spiral winding is in the outside of wiring portion and lie in spiral blind groove, with the help of the setting in spiral blind groove, increases coil 8 and power supply terminal 24's area of contact, guarantees both switch on stability. The spiral blind groove is used for accommodating soldering tin of the coil 8 and the wiring part, and meanwhile, the holding amount of the soldering tin is increased, so that the coil 8 and the wiring part are firmly welded together, and the phenomenon that the coil 8 and the wiring part are separated from each other due to poor welding is avoided. Preferably, the base 4 has a bar hole for accommodating the wire connection portion, and after the coil 8 is wound in the spiral blind groove of the wire connection portion, the power terminal 24 is inserted into the base 4 and the wire connection portion is located in the bar hole, and then solder is added into the bar hole, and the solder in the bar hole automatically enters the spiral blind groove.
The insulating device also comprises a plastic shell 27 sleeved outside the insulator 1, wherein the plastic shell 27 is used for accommodating concave holes of the insulator 1, the electromagnet, the terminal unit and the armature 13; the positioning plate 5 is provided with a positioning blind groove, the positioning blind groove is used for accommodating one end of the yoke 9, and the side surface of an inner groove of the positioning blind groove is used for stopping and abutting against the yoke 9; the yoke 9 protrudes out of the positioning plate 5 and abuts against the bottom surface of the concave hole, the plastic shell 27 is provided with a clamping groove communicated with the concave hole, and one end of the core rod part 17 protrudes out of the yoke 9 and extends into the clamping groove.
The plastic shell 27 is provided with a vent hole 28 communicated with the concave hole, and the vent hole 28 is used for penetrating through the side wall of the plastic shell 27; along the central axis direction of the air holes 28, the air holes 28 are wavy. In the use process of the electromagnet, the coil 8 is electrified to generate heat, so that the temperature in the plastic shell 27 is increased, the air in the plastic shell 27 expands and is automatically discharged through the air holes 28, and the phenomenon that the plastic shell 27 is cracked due to overlarge air pressure is avoided. When external water enters the air holes 28, the wave-shaped wave crest position is used for preventing the external water from entering the concave holes of the plastic shell 27, so that the waterproof effect of the waterproof electromagnetic relay is realized.
The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.
Claims (10)
1. A conductive terminal anti-drop electromagnetic relay comprises an insulator, an electromagnet and a terminal unit which are arranged on the insulator, and an armature which is movably arranged, wherein the terminal unit is provided with a movable terminal and a fixed terminal which are arranged on the insulator, and the electromagnet drives the movable terminal to be conducted or disconnected through the armature; the method is characterized in that: the insulator comprises a base part, a positioning plate arranged at an interval with the base part, and a core column connecting the base part and the positioning plate, the electromagnet is provided with an iron core, a coil and a yoke, the iron core penetrates through the core column, the coil is sleeved on the outer side of the core column and positioned between the base part and the positioning plate, and the coil is arranged around the iron core; one end of the yoke iron is arranged at one end of the iron core which protrudes out of the positioning plate, the movable terminal comprises a movable spring piece and a first welding leg which are arranged at the other end of the yoke iron, the armature iron is arranged on the movable spring piece, and the other end of the iron core protrudes out of the base part and is used for attracting the armature iron so that the armature iron butts against the other end of the iron core and the other end of the yoke iron; the base part is provided with an accommodating cavity, the static terminal is provided with a contact part exposed in the accommodating cavity and a second welding leg formed by bending the contact part, one end of the movable spring leaf, which is far away from the yoke, extends into the accommodating cavity and is used for conducting or disconnecting the contact part, and the first welding leg and the second welding leg extend out of the base part and are used for being welded on an external circuit board.
2. The conductive terminal drop-proof electromagnetic relay according to claim 1, wherein: the iron core comprises a plate body part and a core rod part arranged on the plate body part, the outer diameter of the plate body part is larger than that of the core rod part, one end, far away from the plate body part, of the core rod part protrudes out of the positioning plate and is arranged on the yoke, the bottom surface of the containing cavity is used for stopping and abutting against the plate body part, and the plate body part is used for attracting the armature.
3. The conductive terminal drop-proof electromagnetic relay according to claim 2, wherein: the base part is provided with a yielding blind hole which is concavely arranged on the bottom surface of the containing cavity and a conical protrusion which is positioned in the yielding blind hole, the conical protrusion is arranged on the bottom surface of the yielding blind hole, the outer diameter of one end, close to the yielding blind hole, of the conical protrusion is larger than the outer diameter of one end, far away from the yielding blind hole, of the bottom surface of the conical protrusion, and the free end of the conical protrusion is used for abutting against the plate body part.
4. The conductive terminal drop-proof electromagnetic relay according to claim 1, wherein: the basal portion has the holding hole with the holding chamber intercommunication, and the quantity of quiet terminal is two, and the contact site of two quiet terminals is pasted respectively and is established on the inside wall that the both sides were kept away from each other in the holding hole, and the one end that the yoke was kept away from to the movable contact spring is located the holding hole and is located between the contact site of two quiet terminals, and the movable contact spring is used for switching on a quiet terminal, and the second leg of two quiet terminals stretches out the both sides that the same end of basal portion was kept away from each other suddenly.
5. The conductive terminal drop-proof electromagnetic relay according to claim 1, wherein: the cover plate is characterized by further comprising a cover plate, elastic buckles are arranged on two sides, far away from each other, of the cover plate, the base portion is provided with two buckling holes, the cover plate is connected with the base portion in a buckling mode, the elastic buckles on the two sides of the cover plate are buckled into the two buckling holes respectively, and the cover plate is used for covering the opening of the accommodating cavity.
6. The conductive terminal drop-proof electromagnetic relay according to claim 5, wherein: the cover plate is provided with a positioning bulge positioned in the accommodating cavity, the movable spring piece is provided with a convex piece part attached to the armature, one end of the armature is provided with a positioning column penetrating through the convex piece part, and the free end of the positioning bulge is abutted against the convex piece part and enables one end of the armature to be pressed and held at one end of the yoke.
7. The conductive terminal drop-proof electromagnetic relay according to claim 5, wherein: the power supply terminal is provided with a clamping part arranged on the base, a wiring part arranged on the clamping part, a bent part bent from the clamping part and a third welding leg arranged on the bent part, the third welding leg penetrates through the cover plate and protrudes out of the middle part of the base, and the cover plate is used for abutting against the bent part.
8. The conductive terminal drop-proof electromagnetic relay according to claim 7, wherein: the wiring portion has spiral blind groove, and spiral blind groove is established from the surface of wiring portion is concave to form, and spiral blind groove extends the setting along the length direction of wiring portion, and the both ends spiral winding of coil is in the outside of wiring portion and lie in spiral blind groove, and spiral blind groove is used for holding the soldering tin of establishing coil and wiring portion.
9. The conductive terminal drop-proof electromagnetic relay according to claim 1, wherein: the plastic shell is sleeved outside the insulator and is used for accommodating concave holes of the insulator, the electromagnet, the terminal unit and the armature; the positioning plate is provided with a positioning blind groove, the positioning blind groove is used for accommodating one end of the yoke, and the side surface of an inner groove of the positioning blind groove is used for blocking the yoke; the yoke iron protrudes out of the positioning plate and abuts against the bottom surface of the concave hole, the plastic shell is provided with a clamping groove communicated with the concave hole, and one end of the core rod part protrudes out of the yoke iron and extends into the clamping groove.
10. The conductive terminal drop-proof electromagnetic relay according to claim 9, wherein: the plastic shell is provided with air holes communicated with the concave holes, and the air holes are used for penetrating through the side wall of the plastic shell; along the central axis direction of the air holes, the air holes are wavy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120348170.4U CN214254290U (en) | 2021-02-07 | 2021-02-07 | Conductive terminal anti-drop electromagnetic relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120348170.4U CN214254290U (en) | 2021-02-07 | 2021-02-07 | Conductive terminal anti-drop electromagnetic relay |
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| Publication Number | Publication Date |
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| CN214254290U true CN214254290U (en) | 2021-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120348170.4U Active CN214254290U (en) | 2021-02-07 | 2021-02-07 | Conductive terminal anti-drop electromagnetic relay |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115092062A (en) * | 2022-08-01 | 2022-09-23 | 深圳金源恒泰科技有限公司 | Vehicle-mounted system and device for positioning school bus safe track |
-
2021
- 2021-02-07 CN CN202120348170.4U patent/CN214254290U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115092062A (en) * | 2022-08-01 | 2022-09-23 | 深圳金源恒泰科技有限公司 | Vehicle-mounted system and device for positioning school bus safe track |
| CN115092062B (en) * | 2022-08-01 | 2023-04-04 | 深圳金源恒泰科技有限公司 | Vehicle-mounted system and device for positioning school bus safe track |
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