CN201127094Y

CN201127094Y - Clock PCB plate

Info

Publication number: CN201127094Y
Application number: CN 200720306506
Authority: CN
Inventors: 李剑波
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2007-12-12
Filing date: 2007-12-12
Publication date: 2008-10-01
Anticipated expiration: 2017-12-12
Also published as: WO2009076884A1

Abstract

The utility model discloses a time clock PCB board. Two bar shaped positioning slots are disposed on the body of time clock PCB board, which are used for fixing star card engaging with the positioning screw. The utility model is compatible to most of the prior star card because of adopting positioning slots, not the prior positioning points. When new star card is used, board alternating is not necessary for the time clock board. The problem of incompatibility due to positioning point change of the star card is avoided, plenty of PCB board developing time and cost are saved, thus market need of the product is quickly corresponded, and competitiveness of the product is enhanced.

Description

A kind of clock pcb board

Technical field

The utility model relates to communication technical field, is specifically related to a kind of clock pcb board of inside of base station.

Background technology

Each base station in the cdma communication system needs clock synchronization, and clock synchronization realizes by the GPS/GLONASS star card on the clock board in the base station.The star card belongs to the outsourcing device, and its mounting structure, electric interfaces all are manufacturer's designs, determine that clock board will come the physical structure and the electric interfaces of designing board according to existing star card well, reach the compatible purpose of using the star card.Because the application market difference of cdma base station, and factors such as star card price, the supply of material, the clock pcb board is wanted compatible multiple star card, therefrom selects a kind of star card to use according to the demand of practical application.

As shown in Figure 1, existing star fastens the mode schematic diagram, on 102 4 jiaos on the star card four location holes is arranged, and beats positioning hole corresponding at the overall dimension of every kind of star card on the correspondence position of clock board pcb board 101, cooperate pilot pin, star card 102 is fastened on the clock pcb board 101.Described pilot pin can be the element that screw, bayonet socket nail etc. can be used to locate.When clock pcb board design initial, just consider the location hole that sets in advance compatible multiple star card like this, and the interface socket of the structure usage space of every kind of star card and other star cards can not be interfered.

In research and practice process to prior art, the inventor finds that there is following problem in prior art:

In the design initial of clock board, compatible star card type class will be decided, and in the life-cycle processes of clock board, the quality problem that occurs the star card probably, supply of material problem, price problems etc. are all multifactor, cause compatible star card can not continue to use, perhaps no longer has advantage, if use new model, and can only be by the change clock board, compatible again nova card solves, the plate cycle that changes of clock board is minimum wants half a year, and will expend great deal of labor.

Because the structure usage space of every kind of star card and the interface connector of other star cards can not be interfered, to dodge the interface connector of other star cards during design star card installation site, can take more clock board PCB area like this.

The utility model content

The technical problem that the utility model embodiment solves provides a kind of clock pcb board of inside of base station, can realize the compatible industry at present of clock pcb board and may occur the star card of all kinds later on, the PCB space of having saved the clock pcb board simultaneously.

A kind of clock pcb board that the utility model embodiment provides, plate body is provided with two strip location notchs, and described location notch is used for cooperating with pilot pin fixedly starboard.

Adopt technique scheme, the utility model embodiment beneficial technical effects is:

Among the utility model embodiment, the plate body of clock pcb board is provided with two strip location notchs, and described location notch is used for cooperating with pilot pin fixedly star card.Because adopted location notch rather than existing anchor point, can compatible existing most star cards, when using new star card, need not change plate to clock board, that has avoided the anchor point of star card to change causing can't compatible problem, saved a large amount of clock pcb board development time and expense, tackled the demand of market fast, improved competitiveness of product product.

Description of drawings

Fig. 1 fastens the mode schematic diagram for the prior art star;

Fig. 2 is the schematic diagram of the utility model embodiment clock pcb board;

Fig. 3 is the structural representation of a negative and positive bolt among the utility model embodiment;

Fig. 4 is the fixedly structure chart of star card of a negative and positive bolt.

Embodiment

The utility model embodiment provides a kind of clock pcb board of inside of base station, can realize the compatible industry at present of clock pcb board and may occur the star card of all kinds later on, the PCB space of having saved the clock pcb board simultaneously.

The clock pcb board that the utility model is provided is described in detail below.

The clock pcb board that the utility model provides, the plate body of clock pcb board are provided with two strip location notchs, and described location notch is used for cooperating with pilot pin fixedly star card.

Locate mode has adopted the design of the location notch of strip, can make the compatible polytype star card of clock pcb board.As shown in Figure 2, be the schematic diagram of the utility model embodiment clock pcb board.Comprise: clock pcb board plate body 200, location notch 211, location notch 212.

In the present embodiment, location notch 211 and location notch 212 adopts vertical design, and the length of location notch can be set according to the full-size that the star card may occur, star card that like this can compatible more type, the size of star card is not subjected to the restriction of length and width within the specific limits.

Be understandable that, can adopt subvertical design between the location notch described in the embodiment of the invention, also can adopt non-perpendicular design, for example: described location notch also can be taked parallel or angled.If adopt parallel design, then can compatible certain-length or the multiple star card of certain width, and can be more prone to realize 4 point locations, but then the compatibility of star card size is had certain restriction with respect to vertical design.Be understandable that two location notchs of design of also can taking in some cases to have a certain degree.But generally be shaped as rectangle, so adopt vertical design for selecting preferably based on the star card.Relative position is not construed as limiting the invention between the concrete location notch.

Be understandable that, described location notch is with clock pcb board hollow out, in the described location notch pilot pin is set, described pilot pin can slide in groove, change the position of pilot pin neatly according to the size of star card, as being example with three pilot pins among Fig. 2: pilot pin 221, pilot pin 222 and pilot pin 223.Among the utility model embodiment, the star card of any kind of can be realized at least 3 reliable location.In this example, adopt three pilot pins, be appreciated that to the invention is not restricted to three pilot pins, the number of concrete pilot pin can be selected according to actual conditions.

Be understandable that, can be provided with the support rubber cushion on the plate body described in the embodiment of the invention, be used to support the star card.Under the situation of needs: for example the star card is overweight or center of gravity not when central point, can also realize 4 point locations the 4th mode that adds the adhesive support rubber cushion.

Among the utility model embodiment, described pilot pin 221～pilot pin 223 can be a negative and positive bolt.

As shown in Figure 3, be the structural representation of a negative and positive bolt; Comprise sun 301, cloudy 302.Described sun 301 has external screw thread, and described the moon 302 has internal thread.

A sun external diameter of a described negative and positive bolt approximately is the width of location notch, and the internal diameter of described negative and positive head is less than the internal diameter of location notch; The PCB half that the sun head passes described hollow out closes with nut is stubborn.Location hole is twisted by screw and fixing star card on the cloudy head of the bolt of described negative and positive head and the star card.

Fig. 4 is the fixedly structure chart of star card of a negative and positive bolt, comprising: star clamp body 400, star card location hole 410 stars fasten the moon 302, the nut 230 of sun 301, a negative and positive bolt of screw 420, clock pcb board plate body 200, a negative and positive bolt.

The sun of a negative and positive bolt 301 passes the pcb board of described hollow out and nut 230 and twists and close, and star fastens screw 420 the moon by location hole 410 and a negative and positive bolt 302 and twists to close and realize fixedly star cards.

Be understandable that, on the described clock pcb board multiple power source interface can be set, be the power supply of star card.

Described multiple power source interface can comprise: voltages such as 6.8V, 5V, 3.3V, 3V, the level type of communication serial port that may use and 1PPS, TTL, communication port such as 232.And at communication serial port with the 1PPS section reserves pull down resistor, build-out resistor and select welding position to put, behind the star card of determining to use,, do corresponding adaptive cable of switching and socket according to the power supply and the kind of interface of reality, the blanket socket that connects star card socket and clock board, the compatibility of realization electric interfaces.

The pilot pin of star card also can adopt the collocation of hexagonal double-ended bolt and screw to use.The locate mode of concrete pilot pin can existing multiple screw or the bayonet socket mode position, the selection of concrete pilot pin does not constitute restriction of the present utility model.

Anyhow the arranging and can adopt of 2 location notchs according to the different layouts of clock pcb board "

" wait different shapes; The width of each location notch can be selected according to the specification of positioning stud, and location notch length can be selected according to the full-size of wanting compatible star card.

As using the device or the module of outsourcing in the fruit product, when wanting the outsourcing piece of 2 kinds of compatibilities or more construction profile, can use the utility model.

More than a kind of clock pcb board provided by the utility model is described in detail, wherein:

Among the utility model embodiment, by a kind of fixing Clock Card pcb board design, can the most on the market star cards of compatibility, when using new star card, need not clock board is changed plate, that has avoided the anchor point of star card to change causing can't compatible problem, has saved a large amount of clock pcb board development time and expense, competitiveness of product has been improved to the demand of product in reply market fast.

For one of ordinary skill in the art, according to the thought of the utility model embodiment, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.

Claims

1. a clock pcb board is characterized in that, the plate body of clock pcb board is provided with two strip location notchs, and described location notch is used for cooperating with pilot pin fixedly starboard.

2. clock pcb board as claimed in claim 1 is characterized in that, described two strip location notchs are parallel or angled.

3. clock pcb board as claimed in claim 1 is characterized in that, described two strip location notchs are vertical mutually.

4. clock pcb board as claimed in claim 2 is characterized in that described location notch is with the pcb board hollow out.

5. clock pcb board as claimed in claim 3 is characterized in that, in the described location notch pilot pin is set, and described pilot pin can slide in groove.

6. clock pcb board as claimed in claim 4 is characterized in that, described pilot pin is a negative and positive bolt, and a sun external diameter of a described negative and positive bolt is greater than the width of described location notch, and the internal diameter of described negative and positive head is less than the internal diameter of location notch; The pcb board that sun head passes described hollow out closes with nut is stubborn.

7. clock pcb board as claimed in claim 5 is characterized in that, location hole is twisted by screw and fixing star card on the cloudy head of the bolt of described negative and positive head and the star card.

8. clock pcb board as claimed in claim 1 is characterized in that described plate body is provided with the support rubber cushion, is used to support the star card.

9. as the described clock pcb board of claim 1 to 8, it is characterized in that described plate body is provided with universal power supply socket, be used to the power supply of star card.