CN210443517U - Protective tube, circuit system and electric appliance - Google Patents
Protective tube, circuit system and electric appliance Download PDFInfo
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- CN210443517U CN210443517U CN201921949599.8U CN201921949599U CN210443517U CN 210443517 U CN210443517 U CN 210443517U CN 201921949599 U CN201921949599 U CN 201921949599U CN 210443517 U CN210443517 U CN 210443517U
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- cap
- circumferential positioning
- positioning part
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Abstract
The utility model relates to an electricity field. The fuse tube comprises a tube body, a tube cap and a pin, wherein the pin is provided with a head part and a foot part, the head part is positioned at one end of the foot part along the length direction, the tube cap is provided with a mounting hole, the head part is positioned in the tube cap, the foot part penetrates out of the mounting hole, and the tube cap is sleeved at the end part of the tube body; the inner wall of the pipe cap is provided with a first circumferential positioning part, the head is provided with a second circumferential positioning part, and the first circumferential positioning part and the second circumferential positioning part are in nested fit. Therefore, under the matching of the first circumferential positioning part and the second circumferential positioning part, the pins cannot rotate circumferentially relative to the pipe cap, so that the connection between the pipe cap and the pins is stable and reliable, the electric contact between the pipe cap and the pins is good, and the running reliability of an electric appliance product is guaranteed. The utility model discloses still relate to a circuit system and electrical apparatus.
Description
Technical Field
The utility model relates to an electricity field specifically relates to a protective tube, circuit system and electrical apparatus.
Background
The existing fuse tube comprises a tube body, a tube cap and a pin, wherein the pin and the tube cap are connected with each other by riveting or soldering, the riveting connection and the soldering connection can ensure that the foot does not move along the length direction of the fuse tube, however, the pin can rotate relative to the tube cap no matter the riveting connection or the soldering connection, poor contact or increased contact resistance between the tube cap and the pin is easily caused, and the reliability of the operation of an electric appliance product is influenced.
Disclosure of Invention
One of the objectives of the present invention is to provide a safety tube with a cap and a foot connected stably and reliably.
In order to achieve the purpose, the utility model provides a protective tube comprises a tube body, a tube cap and a pin, wherein the pin is provided with a head part and a foot part, the head part is positioned at one end of the foot part along the length direction, the tube cap is provided with a mounting hole, the head part is positioned in the tube cap, the foot part penetrates out of the mounting hole, and the tube cap is sleeved at the end part of the tube body; the inner wall of the pipe cap is provided with a first circumferential positioning part, the head is provided with a second circumferential positioning part, and the first circumferential positioning part and the second circumferential positioning part are in nested fit.
Therefore, the utility model discloses a to the structural design of protective tube, like this under the cooperation of first circumferential location portion and second circumferential location portion, the pin can not be for pipe cap circumferential direction, is favorable to the reliable and stable that pipe cap and pin are connected, is favorable to pipe cap and pin electrical contact good, is favorable to guaranteeing the reliability of electrical apparatus product operation.
Preferably, the foot is soldered to the outer wall of the cap.
In another preferred embodiment, the pin is riveted to the cap.
Still another preferred scheme is that the cooperation of first circumferential location portion and second circumferential location portion is equipped with at least two sets, and each group distributes along the circumference of mounting hole.
Therefore, the stress between the pipe cap and the pins is stable in the circumferential direction, and the pipe cap and the pins are further connected stably and reliably.
Further, three sets of the first circumferential positioning part and the second circumferential positioning part are matched.
Still preferably, the first circumferential positioning part comprises a protrusion protruding from the inner wall of the pipe cap to the head, and the second circumferential positioning part is a slot; and/or the first circumferential positioning part comprises a slotted hole, and the second circumferential positioning part comprises a protrusion protruding from the head part to the inner wall of the pipe cap; the protrusion is embedded in the slot.
Therefore, the mode that the bulges are embedded in the slotted holes can realize the nesting fit, the circumferential limiting and positioning of the pins and the pipe cap can be realized, and the pins can be prevented from rotating relative to the pipe cap in the circumferential direction; in this technical solution, the slot hole may not be a slot penetrating the corresponding structure, and may also be a hole penetrating the corresponding structure.
In a further proposal, the projections are V-shaped, and the slots are V-shaped slots.
The second purpose of the utility model is to provide a stable and reliable circuit system is connected with foot to the cap for pipe.
In order to achieve the above object, the present invention provides a circuit system including the fuse.
It is from top to bottom visible, the utility model discloses a circuit system is owing to adopt aforementioned protective tube for under the cooperation of first circumferential location portion and second circumferential location portion, the pin can not be for pipe cap circumferential direction, is favorable to the reliable and stable that pipe cap and pin are connected, is favorable to guaranteeing the reliability of electrical product operation.
The third purpose of the utility model is to provide an electric appliance with a stable and reliable connection between the pipe cap and the foot.
In order to achieve the above object, the present invention provides an electrical appliance including the circuit system.
It is from top to bottom visible, the utility model discloses an electrical apparatus is owing to adopt aforementioned circuit system for under the cooperation of first circumferential location portion and second circumferential location portion, the pin can not be for pipe cap circumferential direction, is favorable to the reliable and stable that pipe cap and pin are connected, is favorable to guaranteeing the reliability of electrical product operation.
Drawings
FIG. 1 is an external structural view of an embodiment of the fuse of the present invention;
FIG. 2 is a partial cross-sectional structural view of an embodiment of the fuse of the present invention;
FIG. 3 is a block diagram of a cap in an embodiment of the fuse of the present invention;
fig. 4 is a structural diagram of a pin in an embodiment of the fuse of the present invention.
Detailed Description
The electric appliance of the embodiment adopts the electric appliance system of the embodiment, and the electric appliance system of the embodiment is provided with the fuse tube of the embodiment.
Referring to fig. 1 and 2, the safety tube of the present embodiment includes a tube body 1, two caps 2 and two pins 3, the pins 3 include a head 31 and a leg 32, the head 31 is disc-shaped, the leg 32 extends from the center of the disc of the head 31 toward one side of the disc along a central axis direction, the cap 2 has a bottom wall 21 and an annular peripheral wall 22, the bottom wall 21 of the cap 2 is provided with a mounting hole 211, the head 31 is disposed in the cap 2, the leg 32 extends from the mounting hole 211, a shape of a wall surface of the head 31 facing one side of the mounting hole 211 matches a shape of an inner side surface of the bottom wall of the cap 2, and the leg 32 is connected to an outer side surface of the bottom wall 21 of the cap 2 by soldering.
The soldering connection is easy to loosen, so that the pin 3 is easy to rotate circumferentially relative to the tube cap 2, poor contact or increased contact resistance between the tube cap 2 and the pin 3 is caused, and the operation reliability of an electric appliance product is influenced.
Referring to fig. 2 to 4, in the present embodiment, three V-shaped grooves 212 are formed on a wall surface of the head 31 facing one side of the mounting hole 211, the three V-shaped grooves 212 are distributed around the foot 32, V-shaped openings of the three V-shaped grooves 212 face the foot 32, three V-shaped protrusions 311 protrude inward on an inner side surface of the bottom wall of the cap 2, the three V-shaped protrusions 311 correspond to the three V-shaped grooves 212 one by one, and each V-shaped protrusion 311 is embedded in the corresponding V-shaped groove 212. Therefore, under the matching of the V-shaped groove 212 and the V-shaped protrusion 311, the pin 3 cannot rotate circumferentially relative to the pipe cap 2, so that the connection between the pipe cap 2 and the pin 3 is stable and reliable, and the running reliability of an electric appliance product is ensured.
When assembling the fuse tube, firstly, the pin 32 of the pin 3 passes through the mounting hole 211 from the inner side of the tube cap 2, and the pin 3 is rotated to enable each V-shaped protrusion 311 to be respectively embedded into the corresponding V-shaped groove 212, then the pin 32 of the pin 3 is welded with the outer wall of the tube cap 2 by adopting tin soldering, and finally the tube cap 2 is fixedly sleeved on the end part of the tube body 1.
The fitting of the V-shaped protrusion 311 into the V-shaped groove 212 may be replaced by the fitting of a common protrusion into a common groove, the shapes of the protrusion and the groove are not limited to the V-shape, and may be, for example, a circle, a square, a triangle, etc., and the fitting of the protrusion into the groove is defined as a nested fitting in this application.
Alternatively, the nesting fit is not necessarily a fit where the protrusion on cap 2 fits into the slot on head 31, a fit where the protrusion on head 31 fits into the slot on cap 2, or a fit where both the protrusion on head 31 fits into the slot on cap 2 and a fit where the protrusion on cap 2 fits into the slot on head 31.
In this embodiment, the projection and the slot on the cap 2 are the first circumferential positioning part, and the projection and the slot on the head 31 are the second circumferential positioning part.
Alternatively, the number of slots and protrusions is not necessarily three, for example, the number of slots and protrusions is one or two, and the object of the present invention can be achieved as long as there is a nested fit between cap 2 and head 31 to restrict rotation of pin 3 relative to cap 2.
Alternatively, the leg 32 and the cap 2 may be connected by soldering, riveting, or the like. The soldering connection and the riveting connection are two common modes for connecting the tube cap 2 and the pin 3 in the prior art, and the soldering connection technology and the riveting connection technology are mature and reliable.
Alternatively, the plate shape of the head 31 may be a non-circular shape (not shown) such as a triangle or a quadrangle, a groove (not shown) matching the plate shape of the head 31 may be provided on the inner wall of the cap 2, and the head 31 may be integrally fitted into the groove. In this case, the groove in the cap 2 serves as a first circumferential positioning portion, and the entire head portion 31 serves as a second circumferential positioning portion.
Finally, it should be emphasized that the above-described embodiments are merely preferred examples of the present invention, and are not intended to limit the invention, as those skilled in the art will appreciate that various changes and modifications may be made, and any and all modifications, equivalents, and improvements made, while remaining within the spirit and principles of the present invention, are intended to be included within the scope of the present invention.
Claims (9)
1. The fuse tube comprises a tube body, a tube cap and a pin, wherein the pin is provided with a head part and a foot part, the head part is positioned at one end of the foot part along the length direction, the tube cap is provided with a mounting hole, the head part is positioned in the tube cap, the foot part penetrates out of the mounting hole, and the tube cap is sleeved at the end part of the tube body;
the method is characterized in that:
the inner wall of the pipe cap is provided with a first circumferential positioning part, the head is provided with a second circumferential positioning part, and the first circumferential positioning part and the second circumferential positioning part are in nested fit.
2. The fuse of claim 1, wherein:
the foot part is connected with the outer wall of the pipe cap in a soldering mode.
3. The fuse of claim 1, wherein:
the pin is connected with the pipe cap in a riveting mode.
4. The fuse of claim 1, wherein:
at least two groups of the first circumferential positioning part and the second circumferential positioning part are matched, and each group is distributed along the circumferential direction of the mounting hole.
5. The fuse of claim 4, wherein:
three groups of the first circumferential positioning part and the second circumferential positioning part are matched.
6. A safety tube according to any one of claims 1 to 5, wherein:
the first circumferential positioning part comprises a protrusion protruding from the inner wall of the pipe cap to the head, and the second circumferential positioning part is a slotted hole; and/or the first circumferential positioning part comprises a slotted hole, and the second circumferential positioning part comprises a protrusion protruding from the head part to the inner wall of the pipe cap;
the protrusion is embedded in the slot hole.
7. The fuse of claim 6, wherein:
the protrusions are V-shaped bodies, and the slotted holes are V-shaped slotted holes.
8. Circuitry, characterized by:
comprising a fuse according to any one of claims 1 to 7.
9. An electrical appliance, characterized by:
comprising the circuitry of claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921949599.8U CN210443517U (en) | 2019-11-12 | 2019-11-12 | Protective tube, circuit system and electric appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921949599.8U CN210443517U (en) | 2019-11-12 | 2019-11-12 | Protective tube, circuit system and electric appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210443517U true CN210443517U (en) | 2020-05-01 |
Family
ID=70412279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921949599.8U Active CN210443517U (en) | 2019-11-12 | 2019-11-12 | Protective tube, circuit system and electric appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210443517U (en) |
-
2019
- 2019-11-12 CN CN201921949599.8U patent/CN210443517U/en active Active
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