CN208986141U - A kind of low pass cover board - Google Patents
A kind of low pass cover board Download PDFInfo
- Publication number
- CN208986141U CN208986141U CN201821440229.7U CN201821440229U CN208986141U CN 208986141 U CN208986141 U CN 208986141U CN 201821440229 U CN201821440229 U CN 201821440229U CN 208986141 U CN208986141 U CN 208986141U
- Authority
- CN
- China
- Prior art keywords
- cover board
- board body
- hole
- circular bosses
- low pass
- 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
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Abstract
The utility model discloses a kind of low pass cover boards, including cover board body, the cover board body is the composite plate made of aluminium alloy material flitch and carbon steel material plate, the through-hole through cover board body is offered on the cover board body, the bottom end that the lower surface of the cover board body is located at through-hole is provided with circular bosses, the inside of the circular bosses is equipped with the tuned window being connected to through-hole in the axial direction, the surrounding of the circular bosses is provided with reinforcing rib, the quadrangle of the cover board body, which is run through, is equipped with mounting hole, and the mounted inside of the mounting hole has fastening screw.The utility model, cover board body is the composite plate made of aluminium alloy material flitch and carbon steel material plate, integral strength and rigidity are high, service performance is good, long service life, and in the circular bosses of cover board body bottom end setting, it can be while not increasing cover sheet thickness, tuning screw is installed by the tuned window in circular bosses, has saved rapidoprint, effectively reduces the production cost of low-pass filter.
Description
Technical field
The utility model relates to low-pass filter technical field, specifically a kind of low pass cover board.
Background technique
Low-pass filter is the important component of frequency modulation broadcast emission system, it is high-end for limiting tuned radio frequency
Unwanted emission power, the interference to avoid these unwanted emissions to high band naivete emission system.Common low-pass filter
It is usually made of components such as cavity, cover board and tuning screws, cover plate lid is enclosed in the top of filter cavity, forms the humorous of sealing
Shake cavity.Existing low pass cover board, it will usually open up tapped through hole on the cover board, for installing tuning screw, and be wanted in through-hole
There are enough thread turns, could be securely sealed by tuning screw, thus can only just it can increase by increasing the thickness of cover board
The height of tapped through hole, production cost is higher, and existing low pass cover board is usually to be process using cold rolled aluminum milling
Metal plate, strength and stiffness are lower, cause product performance indicator be not very can be high,.
Utility model content
It is in the prior art to solve the purpose of this utility model is to provide a kind of low pass cover board, high production cost, by force
The problems such as degree and rigidity, service performance is up to standard.
To achieve the above object, the utility model provides the following technical solutions: a kind of low pass cover board, including cover board body,
The cover board body is the composite plate made of aluminium alloy material flitch and carbon steel material plate, offers and runs through on the cover board body
The through-hole of cover board body, the bottom end that the lower surface of the cover board body is located at through-hole are provided with circular bosses, the circular bosses it is interior
Portion is equipped with the tuned window being connected to through-hole in the axial direction, and the internal diameter of the tuned window and the internal diameter of through-hole are identical, the tuning
Screw thread is equipped on the inner wall of hole and through-hole, the surrounding of the circular bosses is provided with reinforcing rib, and the quadrangle of the cover board body is passed through
It is equipped with mounting hole, the mounted inside of the mounting hole has fastening screw, and the upper surface of the cover board body is located at mounting hole
Side is connected with protective cover by bungee.
Preferably, the Cover Plate Body Is strip rectangular configuration, the circular bosses are strip cylindrical structure.
Preferably, the shape of the aluminium alloy material flitch and carbon steel material plate, size and thickness are all the same, the aluminium alloy
It is bonded together between plate of material and carbon steel material plate by polymer binder.
Preferably, the bottom edge of the protective cover is bonded with 3M double faced adhesive tape, and the bottom edge of the 3M double faced adhesive tape is bonded with glue
Band release paper.
Preferably, the reinforcing rib is in rectangular triangle structure, the side of the reinforcing rib and bottom edge respectively with circular bosses and
Cover board is originally fixedly connected.
Compared with prior art, the utility model has the beneficial effects that the utility model, cover board body is by aluminium alloy material
Composite plate made of flitch and carbon steel material plate, integral strength and rigidity are high, and processing gets up to be relatively easy to, and service performance is good, makes
It is long with the service life, and in the circular bosses of cover board body bottom end setting, it can be while not increasing cover sheet thickness, by circular bosses
Tuned window tuning screw is installed, saved rapidoprint, the production cost of low-pass filter effectively reduced, in circle
The reinforcing rib of boss surrounding setting enhances the firm of circular bosses so that connecting more firm between circular bosses and cover board body
Property, the effect of tuning is not influenced, the mounting hole being equipped in cover board body quadrangle and the fastening screw assembled in mounting hole, just
It is rapidly covered on the cavity for being enclosed in low-pass filter in by cover board, installation and removal are convenient, and it is time saving and energy saving, improve assembly effect
Rate, and the protective cover connected on cover board body by bungee can play the role of the nut protection to fastening screw, prevent
Fastening screw is damaged.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the cross-sectional view of the utility model；
Fig. 3 is the protective cover structural schematic diagram of the utility model.
In figure: 1, cover board body；2, mounting hole；3, circular bosses；4, reinforcing rib；5, fastening screw；6, polymer binder；
7, aluminium alloy material flitch；8, carbon steel material plate；9, through-hole；10, protective cover；11, tuned window；12, bungee；13,3M double-sided adhesive
Band；14, release paper.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Please refer to Fig. 1-3, in the utility model embodiment, a kind of low pass cover board, including cover board body 1, cover board body 1 be
The composite plate made of aluminium alloy material flitch 7 and carbon steel material plate 8, using the cover board of this structure, integral strength and rigidity are high,
Processing gets up to be relatively easy to, and service performance is good, long service life, and the through-hole 9 through cover board body 1 is offered on cover board body 1,
The bottom end that the lower surface of cover board body 1 is located at through-hole 9 is provided with circular bosses 3, and the inside of circular bosses 3 is equipped in the axial direction and leads to
The tuned window 11 that hole 9 is connected to, the internal diameter of tuned window 11 is identical as the internal diameter of through-hole 9, is all provided on the inner wall of tuned window 11 and through-hole 9
There is screw thread, it, can be right by the tuned window 11 in circular bosses 3 while not increasing cover sheet thickness by the circular bosses 3 of setting
Tuning screw is installed, and rapidoprint has been saved, and effectively reduces the production cost of low-pass filter, the surrounding of circular bosses 3
It is provided with reinforcing rib 4, the setting of reinforcing rib 4, so that connecting more firm between circular bosses 3 and cover board body 1, enhances boss
The stability of platform 3 does not influence the effect of tuning, and the quadrangle of cover board body 1, which is run through, is equipped with mounting hole 2, the mounted inside of mounting hole 2
There is fastening screw 5, is enclosed on the cavity of low-pass filter convenient for rapidly covering cover board, installation and removal are convenient, and it is time saving and energy saving,
The upper surface for improving assembly efficiency cover board body 1 is located at the side of mounting hole 2 and is connected with protective cover 10 by bungee 12, protects
Shield 10 can play the role of the nut protection to fastening screw 5, and fastening screw 5 is prevented to be damaged, and cover board body 1 is length
Bar shaped rectangular configuration, circular bosses 3 are strip cylindrical structure, shape, size and the thickness of aluminium alloy material flitch 7 and carbon steel material plate 8
It spends all the same, is bonded together between aluminium alloy material flitch 7 and carbon steel material plate 8 by polymer binder 6, protective cover 10
Bottom edge is bonded with 3M double faced adhesive tape 13, and the bottom edge of 3M double faced adhesive tape 13 is bonded with adhesive tape release paper 14, passes through 3M double faced adhesive tape 13
Facilitate and protective cover 10 is bonded on cover board body 1, and be located at the nut side of fastening screw 5, to play to fastening
The effect that screw 5 is protected, reinforcing rib 4 are in rectangular triangle structure, the side of reinforcing rib 4 and bottom edge respectively with circular bosses 3 and cover board
Originally it is fixedly connected.
The working principle of the utility model is: in use, only needing cover board sheet using the fastening screw 5 in mounting hole 2
The lid of body 1 is sealed and is mounted on the cavity of low-pass filter, and installation and removal are convenient, time saving and energy saving, and assembly efficiency is high, and is covered
Plate ontology 1 is the composite plate made of aluminium alloy material flitch 7 and carbon steel material plate 8, and integral strength and rigidity are high, processing get up compared with
Be it is easy, service performance is good, long service life, meanwhile, 1 bottom end of cover board body setting circular bosses 3, lid can not increased
While plate thickness, tuning screw is installed by the tuned window 11 in the through-hole 9 and circular bosses 3 on cover board body 1, is saved
About rapidoprint, effectively reduces the production cost of low-pass filter, in addition, the reinforcing rib 4 of 3 surrounding of circular bosses, so that circle
It connects stronger between boss 3 and cover board body 1, enhances the stability of circular bosses 3, do not influence the effect of tuning.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and
And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in
All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting
Related claim.
Claims (5)
1. a kind of low pass cover board, including cover board body (1), it is characterised in that: the cover board body (1) is by aluminium alloy material flitch
(7) and composite plate made of carbon steel material plate (8), the through-hole through cover board body (1) is offered on the cover board body (1)
(9), the bottom end that the lower surface of the cover board body (1) is located at through-hole (9) is provided with circular bosses (3), the circular bosses (3) it is interior
Portion is equipped with the tuned window (11) being connected to through-hole (9), the internal diameter of the tuned window (11) and the internal diameter of through-hole (9) in the axial direction
It is identical, screw thread is equipped on the inner wall of the tuned window (11) and through-hole (9), the surrounding of the circular bosses (3) is provided with reinforcement
Muscle (4), the quadrangle of the cover board body (1), which is run through, is equipped with mounting hole (2), and the mounted inside of the mounting hole (2) has fastening spiral shell
It follows closely (5), the side that the upper surface of the cover board body (1) is located at mounting hole (2) is connected with protective cover by bungee (12)
(10).
2. a kind of low pass cover board according to claim 1, it is characterised in that: the cover board body (1) is strip rectangle
Structure, the circular bosses (3) are strip cylindrical structure.
3. a kind of low pass cover board according to claim 1, it is characterised in that: the aluminium alloy material flitch (7) and carbon steel material
The shape of flitch (8), size and thickness are all the same, pass through high score between the aluminium alloy material flitch (7) and carbon steel material plate (8)
Sub- adhesive (6) is bonded together.
4. a kind of low pass cover board according to claim 1, it is characterised in that: the bottom edge of the protective cover (10) is bonded with 3M
The bottom edge of double faced adhesive tape (13), the 3M double faced adhesive tape (13) is bonded with adhesive tape release paper (14).
5. a kind of low pass cover board according to claim 1, it is characterised in that: the reinforcing rib (4) is in rectangular triangle structure,
The side of the reinforcing rib (4) is originally fixedly connected with circular bosses (3) and cover board respectively with bottom edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821440229.7U CN208986141U (en) | 2018-09-04 | 2018-09-04 | A kind of low pass cover board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821440229.7U CN208986141U (en) | 2018-09-04 | 2018-09-04 | A kind of low pass cover board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208986141U true CN208986141U (en) | 2019-06-14 |
Family
ID=66783158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821440229.7U Expired - Fee Related CN208986141U (en) | 2018-09-04 | 2018-09-04 | A kind of low pass cover board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208986141U (en) |
-
2018
- 2018-09-04 CN CN201821440229.7U patent/CN208986141U/en not_active Expired - Fee Related
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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: 20190614 Termination date: 20190904 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |