JPS6236229Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a cathode ray tube socket in which overvoltage generated at contacts within the socket is grounded by a discharge gap element.

If an overvoltage higher than the specified voltage is applied to the terminal pins or contacts of a cathode ray tube socket, the electronic circuit connected to the terminal pins may be destroyed. The discharge gap element discharges and the discharge current drops the overvoltage to ground to protect the electronic circuit. Some cathode ray tube sockets have a plurality of such discharge gap elements built into the main body of the cathode ray tube socket.

In a conventional cathode ray tube socket of this kind, in order to electrically connect the built-in discharge gap element with a contact connected to a terminal pin of a mating cathode ray tube, one electrode terminal of the discharge gap element; Some electrical connections were made by soldering the terminals of the contacts or by press-fitting one electrode terminal of the discharge gap element into a hole formed in a part of the contact.

Although the former method of connection by soldering is reliable and highly reliable, it has disadvantages such as poor connection workability, a large number of connection steps, and a large amount of material loss. On the other hand, in the case of press-fitting, the material loss is small and the number of connection steps is small, but the reliability of the contact part is poor, and when subjected to vibration etc., the connection between these contacts and the discharge gap element becomes defective, and the discharge gap There was a possibility that the purpose of providing the element would be lost.

In this invention, one of the contact parts between the discharge gap element and the contact is made into an elastic clamping part by folding both sides of an elastic plate, and the other part is press-fitted into the elastic clamping part within a limit to electrically connect each other. It is for making connections. In this way, relatively good electrical contact can be obtained, there is no risk of it coming off easily even in the event of vibration, good contact can be maintained, the connection operation can be easily performed, and there is no loss of material. The aim is to keep it relatively small.

Hereinafter, embodiments of the cathode ray tube socket according to this invention will be described with reference to the drawings. As shown in FIGS. 1 to 3 (see especially FIG. 2), in this embodiment, the socket main body 11 is divided into a front main body 12 and a back main body 13. . A center hole 14 is formed in the front body 12, and a plurality of contact accommodating portions 15 extending in the front-rear direction are formed near the center hole 14 at equal intervals on the same circle. Main body 1
A high voltage discharge gap housing section 16 is provided on one side of the discharge gap housing section 1 .

A contact body 17 is housed in each of the contact housing portions 15, and the contact body 1
The rear end of 7 is bent and extended outward along the back surface of the front main body 12 to form a contact middle part 18, and is bent and extended rearward from the outer end of the contact middle part 18 to form a terminal 19 and a contact 21. is formed. Further outside the arrangement circle of the contact housing portions 15, the discharge gap housing portion 22 is connected to the center hole 14.
It is formed in an arc shape with the center at the center. A discharge gap element 23 is disposed within the discharge gap accommodation portion 22 and the contact 21
It is accommodated accordingly.

For example, as shown in FIG. 4, the discharge gap element 23 has a rectangular frame-shaped electrode holding piece 24 made of an insulating material.
A pair of electrodes 2 are placed on opposite sides of the electrode holding piece 24.
5 and 26 are held facing each other, and these electrodes 25,
A discharge gap is formed between 26 and 26. electrode 25,
26 and the electrode holding piece 24 are integrally formed by molding. The side of one electrode 24 opposite to the discharge gap is integrally extended as a ground conductor 27 on both sides in a direction perpendicular to the direction of extension of the electrode, and is sequentially integrally connected to the corresponding ground conductor of the other discharge gap element 23. .

The contact accommodating portion 15 and the discharge gap accommodating portion 22 are formed from the back side of the front side body 12, and these are closed by the back side body 13, and the contact intermediate portion 18 is closed by the front side body 12 and the back side body 13. is held in place.

In this embodiment, electrode 26 and contact 2
The electrode terminal part protruding from the holding piece 24 on the electrode 26 side in the figure is one of the contact parts of 1, and both sides of the plate-like piece are folded back to the same side to form a folded part 28.
a, 28b, and the folded portions 28a and 28b and their electrode end portions 26a are opposed to form the elastic clamping portion 2.
It is considered to be 9. The insertion pieces 31 are elastically inserted into the elastic holding portion 29 through the contacts 21 and brought into contact with each other. That is, in the figure, the electrode 26 protrudes from the holding piece 24 toward the rear, that is, toward the back side main body 13, and is bent and extended toward the inner side, that is, toward the center hole 14, as shown in FIG. This bent extension is the contact middle part 1.
The electrode intermediate portion 32 is in direct contact with the electrode 8. The inner end of the electrode intermediate part 32 is folded back to the front side to form the clamping part 2.
It is considered to be 9.

In the clamping portion 29, the bent portions 28a and 28b are folded back from both sides of the extended end 26a extending from the plate-shaped electrode 26 to form the extended end 26a.
It is opposite to 6a. On the other hand, in the contact 21, an insertion piece 31 is cut and raised along the longitudinal direction of the contact intermediate portion 18 as a contact portion. The insertion piece 31 has an extended end portion 26a, a bent portion 28a,
28b and the elastic clamping portion 2.
9, and these clamping portions 29 and insertion piece 31 are electrically connected.

Connection portion 3 formed by this clamping portion 29 and insertion piece 31
3, for example, as shown in FIG.
A connecting portion accommodating portion 34 is formed in an arc shape between the connecting portion accommodating portion 34 and the connecting portion receiving portion 34 . In this example, as shown in FIG. 2, the contact intermediate part 18 and the electrode intermediate part 32 are in contact with each other and are sandwiched between the front body 12 and the rear body 13, and these intermediate parts 18 and 32 are mutually connected. electrically connected.

In the above, the terminal part of the electrode 26 is bent and extended to form the middle part, and the connecting part is folded back. It may also be part 29. Further, in this example, the ground conductor 27 of the discharge gap element 23 is sequentially connected to each discharge gap element. This connection also has a plate-like end 27 on one side.
The holding pieces 35 are bent and extended from one side edge of a so as to face each other, and the plate-shaped end 20a and the holding pieces 35 form an elastic holding part 36, and the other ground conductor is connected to this elastic holding part 36. An insertion piece 37 can be inserted into the elastic clamping part 36 and connected to each other.

Alternatively, as shown in FIG. 6, both sides of the terminal part of one electrode 26 of the discharge gap element 23 are folded back to form a clamping part 29, and the clamping part 29 is similarly protruded from the holding piece 24 for the electrode 25. The protruding terminal part is bent from both sides to form a clamping part 38, and this clamping part 38
Alternatively, an integrally protruding insertion piece 39 may be elastically inserted in the middle of the ribbon-shaped ground conductor 27 for connection.

Furthermore, as shown in FIG. 7, for example, the terminal portion of the electrode 26 is simply an insertion piece 41, an elastic clamping part 42 is integrally formed on the contact 21 side, and the insertion piece 41 is elastically inserted into the elastic clamping part 42. You can.

As described above, according to the cathode ray tube socket of this invention, the discharge gap element and the contact can be connected by inserting the insertion piece 31 into the elastic clamping part 29 or by inserting it into the elastic clamping part 36. Piece 37
, inserting the insertion piece 39 into the elastic holding part 38, inserting the insertion piece 41 into the elastic holding part 42, etc., and inserting the insertion piece into the elastic holding part of the folded structure. Therefore, the connection operation is extremely simple, and since the plate-shaped insertion piece is sandwiched between the plate-shaped folded parts, the contact part is large and there is no risk of it coming off easily even if vibration occurs, and these elastic clamping parts and The connection with the insertion piece is a so-called knife blade action relationship, and good contact is made even if the mutual dimensions change.In other words, there is no need to make the dimensional accuracy mutually accurate, and the two pieces Since the other plate-shaped insertion piece is sandwiched between the plate body, the contact area is good and it does not come off easily. In other words, it is possible to obtain a highly reliable product at a low cost.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing an example of a cathode ray tube socket according to this invention, Fig. 2 is a longitudinal sectional view thereof, Fig. 3 is a bottom view of Fig. 1, and Fig. 4 is a diagram showing the connecting portion between the discharge gap element and the contact. FIG. 5 is an exploded perspective view showing one example; FIG. 5 is an exploded perspective view showing other examples; FIGS.
Each figure is an exploded perspective view showing still another example. 11: Socket body, 15: Contact accommodating part, 22: Discharge gap element accommodating part, 21: Contact, 23: Discharge gap element, 25, 26: Electrode, 2
9, 36, 38, 42: Holding part, 31, 37, 3
9, 41: Insert piece.

Claims (1)

[Scope of utility model registration request] In a cathode ray tube socket in which a plurality of discharge gap elements are built in, one electrode of which is electrically connected to each other, the other electrode of the discharge gap element is connected to a contact portion of a contact of the cathode ray tube socket. One of the parts is a plate-shaped body whose both sides are folded back to the same side to form an elastic clamping part, and the other part is elastically inserted within the elastic limit of the elastic clamping part so that they are electrically connected to each other. A cathode ray tube socket characterized in that the socket is connected to the cathode ray tube socket.