CN206412496U - A kind of cable-assembly and explosion-proof video camera - Google Patents
A kind of cable-assembly and explosion-proof video camera Download PDFInfo
- Publication number
- CN206412496U CN206412496U CN201621408212.4U CN201621408212U CN206412496U CN 206412496 U CN206412496 U CN 206412496U CN 201621408212 U CN201621408212 U CN 201621408212U CN 206412496 U CN206412496 U CN 206412496U
- Authority
- CN
- China
- Prior art keywords
- cable
- assembly
- stuffing box
- explosion
- box bushing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 claims abstract description 43
- 239000000084 colloidal system Substances 0.000 claims abstract description 22
- 238000009434 installation Methods 0.000 claims description 16
- 238000004880 explosion Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 9
- 230000001070 adhesive effect Effects 0.000 description 2
- 210000001217 buttock Anatomy 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Installation Of Indoor Wiring (AREA)
Abstract
A kind of explosion-proof video camera the utility model discloses cable-assembly and with it.The cable-assembly includes：Cable (6)；And Stuffing box bushing (2), the cable (6) passes through the Stuffing box bushing (2), and is inoculated with colloid (1) in the Stuffing box bushing (2).Cable-assembly of the present utility model seals wire harness using colloid and Stuffing box bushing, so as to provide good sealing property, can be applied to the high application environment of requirement of explosion proof, and can provide preferable cable fastening performance.
Description
Technical field
The utility model is related to camcorder technology field, more particularly to a kind of cable-assembly and the explosion-proof shooting with it
Machine.
Background technology
The cable of the anti-explosion product of explosion-proof cartridge type video camera etc. is connected in explosion-proof casing by cable entry.Institute
Stating cable entry needs to carry out encapsulation process.
Fig. 1 is the schematic diagram of cable entry of the prior art.In schematic structure, cable 6 passes through the He of sealing gasket 3
Flat shim 4.Clamp nut 5 screws the cable installation portion 81 of the shell 8 fixed to video camera, and then the position of restriction sealing gasket 3,
Prevent sealing gasket 3 from coming off.
Field of employment of this flame-proof type with sealing gasket introducing device is relatively limited, and can only be used in following several places：
Place without internal ignition source in flameproof enclosure；Have internal ignition source in flameproof enclosure, but danger zone do not require IIC equipment and
The place in 1st area is not resided at；There is internal ignition source in flameproof enclosure, but danger zone does not require IIC equipment, during installed in 1st area
Its shell volume is not more than 2dm3Place.
When thering is ignition source and the danger zone to require IIC equipment for inside, this flame-proof type band sealing gasket introducing device without
Method is used, and the use in its place has larger limitation.In addition, when maloperation buttock line lifts complete machine, cable is relatively close
Packing is easily slided, so as to influence its sealing effectiveness.
Thus, it is desirable to have a kind of technical scheme come overcome or at least mitigate prior art drawbacks described above.
Utility model content
The purpose of this utility model is that provide a kind of cable-assembly lacks to overcome or at least mitigate the above-mentioned of prior art
Fall at least one.
To achieve the above object, the utility model provides a kind of cable-assembly, and the cable-assembly includes：Cable；And
Stuffing box bushing, the cable passes through the Stuffing box bushing, and is inoculated with colloid in the Stuffing box bushing.
Preferably, the cable-assembly further comprises wire harness, and the wire harness tightens the cable, and with interference fit
Mode is arranged in the Stuffing box bushing.
Preferably, the magnitude of interference between the interior diameter of the overall diameter of the wire harness and the Stuffing box bushing is less than or equal to
0.5mm。
Preferably, the Stuffing box bushing is provided with the radially-inwardly prominent shaft shoulder at one end, and the wire harness abuts institute
State the shaft shoulder.
Preferably, the colloid extends to the other end of the Stuffing box bushing from the wire harness.
Preferably, described one end of the Stuffing box bushing it is axially external be disposed with sealing ring, plain washer and
Clamp nut, the cable passes through the sealing ring, plain washer and clamp nut.
Preferably, radial expansion portion is provided with as the longitudinal direction of cable-assembly in the end of the Stuffing box bushing
Position limiting structure.
Preferably, the Stuffing box bushing is provided with annular knurl or groove at its encapsulating position.
The utility model also provides a kind of explosion-proof video camera, and the explosion-proof video camera includes cable-assembly as described above.
Preferably, the explosion-proof video camera is to be set on explosion-proof cartridge type video camera, the shell of the explosion-proof cartridge type video camera
There is cable installation portion, the cable installation portion is provided with local threaded mounting hole, and the cable-assembly is installed through described
Hole, is provided with sealing ring, the cable passes through the sealing ring, institute in the axially external of Stuffing box bushing of the cable-assembly
The external diameter for stating sealing ring is set to be interference fitted with mounting hole, and axially external in the sealing ring is provided with clamp nut, institute
State clamp nut and screw and be connected on the thread segment of the mounting hole, to prevent the cable-assembly from the cable installation portion quilt
Extract.
Preferably, the mounting hole is stepped hole, and step surface coordinates with the radial expansion portion on the Stuffing box bushing, with
Limit the depth capacity that the cable-assembly inserts the shell.
Preferably, plain washer is provided between the sealing ring and the clamp nut, the clamp nut passes through institute
Plain washer is stated by the sealing ring axial compression in the radial expansion portion.
Cable-assembly of the present utility model seals wire harness using colloid and Stuffing box bushing, good so as to provide
Sealing property, can be applied to the high application environment of requirement of explosion proof, and can provide preferable fastening performance.
Brief description of the drawings
Fig. 1 is the schematic diagram of cable introducing device of the prior art.
Fig. 2 is the schematic diagram of the cable-assembly according to the embodiment of the utility model one.
Fig. 3 is the schematic diagram of the installment state of cable-assembly shown in Fig. 2.
Fig. 4 is the schematic diagram of the connection status between cable and wire harness in cable-assembly shown in Fig. 2.
Fig. 5 is the schematic cross sectional views of the Stuffing box bushing in cable-assembly shown in Fig. 2.
Reference：
| 1 | Colloid | 7 | Wire harness |
| 2 | Stuffing box bushing | 8 | Shell |
| 3 | Sealing gasket | 21 | The shaft shoulder |
| 4 | Flat shim | 22 | Annular knurl |
| 5 | Clamp nut | 23 | Radial expansion portion |
| 6 | Cable | 81 | Cable installation portion |
Embodiment
In the accompanying drawings, same or similar element is represented or with same or like function using same or similar label
Element.Embodiment of the present utility model is described in detail below in conjunction with the accompanying drawings.
In description of the present utility model, term " " center ", " longitudinal direction ", " transverse direction ", "front", "rear", "left", "right", " perpendicular
Directly ", the orientation or position relationship of the instruction such as " level ", " top ", " bottom " " interior ", " outer " are based on orientation shown in the drawings or position
Relation, is for only for ease of description the utility model and simplifies description, rather than indicate or imply that the device or element of meaning must
There must be specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to the utility model protection domain
Limitation.
Fig. 2 is the schematic diagram of the cable-assembly according to the embodiment of the utility model one.Fig. 3 is cable-assembly shown in Fig. 2
The schematic diagram of installment state.Fig. 4 is the schematic diagram of the connection status between cable and wire harness in cable-assembly shown in Fig. 2.Fig. 5
It is the schematic cross sectional views of the Stuffing box bushing in cable-assembly shown in Fig. 2.
Cable-assembly of the present utility model is preferably used to video camera, the cable-assembly of especially explosion-proof video camera.But
Cable-assembly not limited to this of the present utility model, and can be used for the cable-assembly of other electric equipments.
The cable-assembly of diagram includes：Cable 6 and Stuffing box bushing 2.The inside of Stuffing box bushing 2 carries through hole, cable 6
Through Stuffing box bushing 2.Colloid 1 is inoculated with Stuffing box bushing 2.Colloid 1 fills the sky between cable 6 and Stuffing box bushing 2
Gap, so as to form good sealing.In addition, colloid 1 provides good adhesive effect between cable 6 and Stuffing box bushing 2.
Above-mentioned cable-assembly seals wire harness using colloid and Stuffing box bushing, so as to provide good sealing
Can, the high application environment of requirement of explosion proof can be applied to, and preferable fastening performance can be provided.
Cable 6 can be any appropriate cable, its specification and concrete form, can be arranged as required to.For example, cable
6 can include many single lines, and insulation sleeve etc. can also be arranged with the outside of cable.Can be connected with cable audio terminal,
Network terminal, inserting terminal, crimp type terminal, fuse or fuse etc..
Referring to Fig. 2 and Fig. 4, the cable-assembly further comprises wire harness 7.Wire harness 7 tightens cable 6.Wire harness 7 can be used
Any existing structure or construction.Specifically, wire harness 7 has a circumferential outer surface, and the circumferential outer surface is to be interference fitted
Mode is arranged in the Stuffing box bushing 2.So as in encapsulating, it is to avoid colloid enters what wire harness 7 coordinated with Stuffing box bushing
Region, especially avoids colloid from being revealed by the region.So as to, it is to avoid the waste of colloid, while avoiding colloid from making cable dirty
Surface or operationlocation.
Preferably, wire harness 7 is arranged in the way of micro interference fit in the Stuffing box bushing 2.For example, the wire harness
The magnitude of interference between the interior diameter of 7 overall diameter and the Stuffing box bushing 2 is less than or equal to 0.5mm.Specifically, the interference
Amount could be arranged to 0.5mm, 0.3mm, either be arranged in the range of 0-0.3mm or be arranged on 0-0.5mm's according to tolerance
In the range of.
It is understood that it is preferred that wire harness 7 is arranged in the Stuffing box bushing 2 in an interference fit, but
It is the utility model not limited to this.For example, wire harness 7 can also be arranged on the filler in the way of interference fits or gap cooperation
In letter bushing 2.In the case of coordinating in gap, it is advantageous that unilateral radial clearance is less than or equal to 0.5mm.
In order to carry out preferably longitudinal direction (length direction of cable) positioning to cable 6, Stuffing box bushing 2 be at one end (Fig. 5's
At right-hand member) place is provided with the radially-inwardly prominent shaft shoulder 21.Wire harness 7 abuts the shaft shoulder 21, it is more advantageous to, wire harness 7 against
The shaft shoulder 21.Internal diameter of the Stuffing box bushing 2 at the shaft shoulder 21 is less than the internal diameter at other positions.The diameter of endoporus at the shaft shoulder 21 is permitted
Perhaps cable 6 is passed through, but does not allow wire harness 7 to pass through.
In order to provide enough intensity, the height that the shaft shoulder 21 is radially-inwardly protruded should be more than the wall thickness of Stuffing box bushing 2
(referring to the wall thickness of main part, be not necessarily referring to the wall thickness of radial direction extension 23 in Fig. 5).Assuming that Stuffing box bushing 2 is with injection molding manner one
It is body formed, and wall thickness is 2-3mm, what the shaft shoulder 21 was radially-inwardly protruded is highly preferable arranged in the range of 3-5mm.In addition,
Wall thickness at the shaft shoulder 21 is more than or equal to the wall thickness of Stuffing box bushing 2.
Referring to Fig. 2, in Stuffing box bushing 2, the left end of colloid 1 from wire harness 7 extends to the high order end of Stuffing box bushing 2.
So as to which colloid 1 has enough length to strengthen sealing and fastening performance.Advantageously, the length (encapsulating length) of colloid 1 is set
It is set to more than or equal to 20mm；And at least 20% cross-sectional area is filled by colloid on whole encapsulating length each point.
Referring to Fig. 5, Stuffing box bushing 2 is provided with annular knurl 22 at its encapsulating position.In Figure 5, stuffing-box is only closed on
Annular knurl 22 is provided with the partial-length of the left end of bushing 2, rather than annular knurl is provided with whole encapsulating position, so as to improve
Manufacturing process.In addition it is also possible to groove, especially lateral trench be set at encapsulating position, to replace annular knurl 22.Annular knurl 22 and institute
The effect for stating groove is all to improve the adhesive effect between colloid and Stuffing box bushing 2, prevention colloid 1 can be played in addition relative
In the effect of the relative longitudinal motion of Stuffing box bushing 2.It is pointed out that in the present invention, laterally referring to vertical perpendicular to cable
To direction.Specifically, above-mentioned lateral trench refers to the groove upwardly extended in the week of Stuffing box bushing 2.Specifically, institute
The depth for stating groove is shallower, is, for example, less than equal to 1mm.Specifically it could be arranged to 1mm, 0.5mm etc..The depth of annular knurl 22 can also
Set according to above-mentioned size, or it is more shallow.
Referring to Fig. 2 and Fig. 3, sealing ring 3, plain cushion are disposed with the axially external of right-hand member of the Stuffing box bushing 2
Circle 4 and clamp nut 5.Cable 6 passes through sealing ring 3, plain washer 4 and clamp nut 5.
Referring to Fig. 3, cable installation portion 81 is provided with the shell 8 of explosion-proof cartridge type video camera.The cable installation portion 81 is set
Threaded mounting hole is equipped with, the cable-assembly is fixed to the shell 8 of the explosion-proof cartridge type video camera.The cable set
Part passes through the mounting hole.As illustrated, the mounting hole is a stepped hole.Axle outward segment (right side section) in Fig. 3 it is interior
Footpath is more than the internal diameter of axial inner segment (the left side section in Fig. 3).
Clamp nut 5, which is screwed, to be fixed in the thread segment of the cable installation portion 81, so that, cable-assembly is attached to outer
Shell 8.In order to prevent clamp nut 5 from releasing, the backing-up screw radially across the perisporium of cable installation portion 81 can be set to fix
Clamp nut 5.
Clamp nut 5 is against plain washer 4, and plain washer 4 seals against circle 3, radial direction of the sealing ring 3 against Stuffing box bushing 2
Extension 23.So, it can prevent cable-assembly from being released from shell 8.Even if carrying out maloperation, when lifting complete machine with buttock line, line
Cable relative will not also be slided with sealing ring 3, so as to not interfere with the sealing effectiveness of sealing ring 3.
The radial expansion portion 23 of Stuffing box bushing 2 as cable-assembly longitudinal spacing structure.On the one hand, radial expansion portion
23 axially inner side and the step surface of the mounting hole coordinate, and the maximum of the shell is inserted deeply to limit the cable-assembly
Degree.On the other hand, the axially external and clamp nut 5 in radial expansion portion 23 coordinates, and prevents cable-assembly from being installed from the cable
Portion 81 is pulled out.That is, the mounting hole is stepped hole, step surface and the radial expansion portion on the Stuffing box bushing 2
23 coordinate
The axially external of Stuffing box bushing 2 of the cable-assembly is provided with sealing ring 3.Cable 6 passes through sealing ring 3.
Advantageously, the internal diameter of cable 6 and sealing ring 3 is slightly interference fitted.The external diameter of sealing ring 3 is set to match somebody with somebody with mounting hole interference
Close, so as to realize excellent sealing.Advantageously, the part coordinated with sealing ring 3 of mounting hole is unthreaded hole, i.e., without screw thread.
It should further be appreciated that the internal diameter of the unthreaded hole is slightly less than the internal diameter of the thread segment.This is conducive to the installation of sealing ring.
Clamp nut 5 is arranged on the axially external of sealing ring 3.Clamp nut 5 screws the screw thread for being connected to the mounting hole
Duan Shang, to prevent the cable-assembly to be pulled out from the cable installation portion 81.Specifically, sealing ring 3 and the clamp nut 5
Between be provided with plain washer 4.Clamp nut 5 is by the plain washer 4 by the axial compression of sealing ring 3 in the radial expansion
In portion 23.
Sealing ring 3, plain washer 4 and Stuffing box bushing 2 are all disposed within the endoporus of cable installation portion 81.Advantageously, line
The endoporus of cable installation portion 81 is stepped hole, and left section of internal diameter is less than right section of internal diameter.So as to the step surface energy at the stepped hole
The radial expansion portion of enough and Stuffing box bushing 2 coordinates, and axial limiting is carried out to Stuffing box bushing 2 and whole cable-assembly.
It is understood that the utility model also provides a kind of explosion-proof video camera, the explosion-proof video camera includes as above institute
The cable-assembly stated.Preferably, the explosion-proof video camera is explosion-proof cartridge type video camera,
It is last it is to be noted that：Above example is only limited to illustrate the technical solution of the utility model, rather than to it
System.It will be understood by those within the art that：Technical scheme described in foregoing embodiments can be modified, or
Person carries out equivalent substitution to which part technical characteristic；These modifications are replaced, and take off the essence of appropriate technical solution
From the spirit and scope of each embodiment technical scheme of the utility model.
Claims (11)
1. a kind of cable-assembly, it is characterised in that the cable-assembly includes：
Cable (6)；And
Stuffing box bushing (2), the cable (6) passes through the Stuffing box bushing (2), and is filled in the Stuffing box bushing (2)
There is colloid (1).
2. cable-assembly as claimed in claim 1, it is characterised in that the cable-assembly further comprises wire harness (7), described
Wire harness (7) tightens the cable (6), and is arranged in an interference fit in the Stuffing box bushing (2).
3. cable-assembly as claimed in claim 2, it is characterised in that the overall diameter of the wire harness (7) is served as a contrast with the stuffing-box
The magnitude of interference covered between the interior diameter of (2) is less than or equal to 0.5mm.
4. cable-assembly as claimed in claim 2, it is characterised in that the Stuffing box bushing (2) is provided with footpath at one end
To the inwardly projecting shaft shoulder (21), the adjacent shaft shoulder (21) of the wire harness (7).
5. cable-assembly as claimed in claim 4, it is characterised in that the colloid (1) extends to described from the wire harness (7)
The other end of Stuffing box bushing (2).
6. cable-assembly as claimed in claim 4, it is characterised in that set in the end of the Stuffing box bushing (2)
Radial expansion portion (23) is equipped with as the longitudinal spacing structure of cable-assembly.
7. cable-assembly as claimed in claim 4, it is characterised in that the Stuffing box bushing (2) sets at its encapsulating position
It is equipped with annular knurl (22) or groove.
8. a kind of explosion-proof video camera, it is characterised in that including the cable-assembly as any one of claim 1-7.
9. explosion-proof video camera as claimed in claim 8, it is characterised in that the explosion-proof video camera is explosion-proof cartridge type video camera,
Cable installation portion (81) is provided with the shell (8) of the explosion-proof cartridge type video camera, the cable installation portion (81) is provided with office
The threaded mounting hole in portion, the cable-assembly passes through the mounting hole, in the axle of the Stuffing box bushing (2) of the cable-assembly
Sealing ring (3) is provided with laterally, and the cable (6) passes through the sealing ring (3), and the external diameter of the sealing ring is set to and pacified
Hole interference fit is filled, axially external in the sealing ring (3) is provided with clamp nut (5), clamp nut (5) company of screwing
On the thread segment for being connected to the mounting hole, to prevent the cable-assembly to be pulled out from the cable installation portion (81).
10. explosion-proof video camera as claimed in claim 9, it is characterised in that the mounting hole is stepped hole, step surface with it is described
Radial expansion portion (23) on Stuffing box bushing (2) coordinates, to limit the depth capacity that the cable-assembly inserts the shell.
11. explosion-proof video camera as claimed in claim 10, it is characterised in that in the sealing ring (3) and the clamp nut
(5) plain washer (4) is provided between, the clamp nut (5) is axially pressed the sealing ring (3) by the plain washer (4)
Tightly on the radial expansion portion (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621408212.4U CN206412496U (en) | 2016-12-21 | 2016-12-21 | A kind of cable-assembly and explosion-proof video camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621408212.4U CN206412496U (en) | 2016-12-21 | 2016-12-21 | A kind of cable-assembly and explosion-proof video camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206412496U true CN206412496U (en) | 2017-08-15 |
Family
ID=59551298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621408212.4U Expired - Fee Related CN206412496U (en) | 2016-12-21 | 2016-12-21 | A kind of cable-assembly and explosion-proof video camera |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206412496U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112350237A (en) * | 2019-08-06 | 2021-02-09 | 杭州海康威视数字技术股份有限公司 | Cable installation device and camera |
-
2016
- 2016-12-21 CN CN201621408212.4U patent/CN206412496U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112350237A (en) * | 2019-08-06 | 2021-02-09 | 杭州海康威视数字技术股份有限公司 | Cable installation device and camera |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170815 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |