JPH0218945Y2 - - Google Patents

Description

[Detailed description of the invention] This invention involves inserting the end of the lead wire into the connection hole provided in the socket body, so that the end elastically connects with the elastic contact connection part, and the lead wire and socket are connected to each other. The present invention relates to a cathode ray tube socket which is electrically connected to a high voltage contact.

In this type of conventional cathode ray tube socket,
If the lead wire is hooked or pulled with the lead wire connected to the socket, there is a risk that force in the insertion/removal direction will be applied to the lead wire at the insertion portion of the connection hole, causing the lead wire to come out. It was hot.

In this device, the lead wire connected to the socket is placed near its connection hole, and a holding piece is rotatably integrated on one side edge of the socket body cover at a position removed from the extension of the lead wire in the insertion/removal direction. formed,
The end of the holding piece is bent at a nearly right angle, and an engagement hole is formed in the bent part, and when the holding piece is pressed against the side of the case, the claws protruding from the side of the socket body case and the holding piece are connected. By engaging the engagement holes, the lead wire inserted into the connection hole can be held. Therefore, the lead wire can be guided and held in a direction different from the insertion/removal direction, so even if the lead wire is pulled, the force will be applied at the connection hole in a direction different from the lead wire removal direction, and the lead wire will be removed. The force in the direction is weakened and it is difficult to get out.

An example of a cathode ray tube socket according to this invention will be explained below with reference to the drawings.

As shown in FIGS. 1 to 3, the socket body 11 made of an insulating material consists of a disc-shaped contact holding part 12 and a high-pressure discharge gap part 13 provided on one side thereof. A center hole 14 is provided in the center of the contact holding portion 12.
A contact accommodating part 15 is formed in the contact holding part 12 on the same circle around the center hole 14, and the contacts 16 are respectively accommodated in the contact accommodating part 15. In this example, a bihawket-shaped contact is used as the contact 16, and a concave portion on the inner circumferential surface of the center hole 14 that is approximately parallel to the axis (of the center hole 14) and has two steps in the direction in which the axis extends. A contact accommodating portion 15 is formed. The contact 16 has the shape shown in FIGS. 2 and 4, and is held in contact with the bottom surface of the contact accommodating portion 15. In the held state, the contact portion 17, which is one end of the contact 16, is inserted into the center hole 1.
4, and the other end protrudes from the back surface of the socket body 11 as a terminal 18. The contact 16h on the high voltage discharge gap 13 side is a high voltage contact to which a high voltage is applied.

The diameter of the rear portion of the outer peripheral surface of the contact holding portion 12 is increased to form a ring-shaped stepped portion, and a ring-shaped ground conductor 21 is disposed along the ring-shaped stepped portion. An electrode piece 22 is integrally bent and extended rearward on the outer peripheral edge of the ground conductor 21, and the electrode piece 22 is fitted and inserted into an electrode groove 23 formed in the socket body 11. The electrode groove 23 communicates with the corresponding contact accommodating part 15, and the electrode piece 22 communicates with the discharge electrode part 24 formed in the middle part of the contact 16.
A hemispherical electrode 25 protrudes from the electrode piece 22 and is closely opposed to the electrode piece 22, and a discharge gap is formed between the electrode 25 and the discharge electrode section 24. When an overvoltage of a predetermined value or more is applied to the contact 16, the discharge gap discharges, and the overvoltage is dropped to the ground through the ground conductor 21.

The high-pressure discharge cavity 13 consists of a case 27 that is integrated with the contact holding section 12 and a cover 28 that covers the open front surface of the case 27 . U-shaped pieces 31 and 32 extend rearward from both sides of the cover 28, and the U-shaped pieces 31 and 32 are hooked onto protrusions 33 and 34 formed on the side surfaces of the case 27, so that the cover 28 is It is attached to the case 27. As shown in FIG. 5, a high-voltage contact storage chamber 35 is formed in one side of the case 27, and as shown in FIGS. 1, 2, and 5, the high-voltage contact 16h shown in FIG. is accommodated. As shown in FIGS. 1 and 7, a connection hole 36 is formed in a part of the socket body 11, in this example, at the position of the high voltage contact housing chamber 35 of the cover 28, and the center of the lead wire 37 is inserted into this connection hole 36. line 3
When 7a is inserted, it comes into elastic contact with the elastic contact portion 38 and is electrically connected to the high voltage contact 16h. As shown in FIGS. 6 and 7 as this elastic contact portion 38, the end of the high voltage contact 16h opposite to the contact portion is bent rearward at an almost right angle to form a receiving piece 39. The side opposite to the receiving piece 39 is cut and raised from the bent portion to form an elastic holding piece 41, and the free end of the elastic holding piece 41 is close to the receiving piece 39. The plate portion 42 in which the holding piece 41 is cut and raised faces the inner surface of the cover 28 , the gap between the holding piece 41 and the receiving piece 39 closely faces the connecting hole 36 , and the receiving piece 39 faces the wall surface of the accommodating part 35 . being touched. Therefore, when the core wire 37a of the lead wire is inserted into the connection hole 36, the core wire 37a is pushed between the receiving piece 39 and the presser piece 41, and the core wire 37a is elastically pressed by the receiving piece 39 at the tip of the presser piece 41. It will be done. Therefore, the lead wire 37 is electrically connected to the high voltage contact 16h. Note that in order to guide the insertion of the lead wire 37, a guide tube 43 centered on the connection hole 36 is attached to the cover 28.
is integrally formed on the outer surface of the

In this example, a high voltage discharge gap is accommodated in the high voltage discharge gap 13 as shown in FIG. That is, hemispherical discharge electrodes 44 and 45 are held in the case 27 facing each other, and a discharge gap is formed between them.
A connecting piece 46 formed integrally with the electrode 44 is connected to the engagement hole 4 formed in the middle part of the high voltage contact 16h.
7 and is electrically connected. A ground terminal 48 integrated with the electrode 45 is led out.

In this invention, as shown in FIGS. 1 to 3, a lead wire holding means is attached to the socket body 11, in this example, the high voltage discharge gap 13, at a position away from the lead wire insertion/removal direction near the connection hole 36. 51 is provided. That is, a holding piece 52 is rotatably integrally formed on the side edge of the front surface of the cover 28 opposite to the contact holding part 12, and the holding piece 52 is rotated to open the case 27 as shown by the dotted line in FIG. When the end portion is brought into contact with the side surface opposite to the contact holding portion 12, it is engaged with a claw 53 that projects integrally from the case 27, and this state is maintained. The end of the holding piece 52 is bent at a substantially right angle, and an engagement hole 54 is formed in the bent part.
is formed, and when the holding piece 52 is pressed against the side surface of the case 27, the bent end of the holding piece 52 is located on the back side of the claw 53, and the claw 53 engages in the engagement hole 54. The lead wire 37 inserted into the connection hole 36 is held against the case 27 by the holding piece 52, and the holding piece 52 is fixed to the claw 53. At this time, an engaging hole 5 is formed in the inner surface of the holding piece 52 so that the lead wire 37 held down is difficult to shift in the longitudinal direction.
It is preferable to form a rib 55 having a triangular cross-section extending toward 4.

According to this device configured in this way, even if the lead wire 37 is bent and routed at the point where it exits the guide tube 43 and is pulled, the force is weakened by the holding means 51, Moreover, Figure 11A
As shown by the arrow in , the direction of the force is perpendicular to the lead wire insertion/removal direction, and the force for pulling out the lead wire is further weakened, resulting in the effect that the lead wire will not come out easily.

The contact 16 may be of a type in which a cathode ray tube terminal is inserted into the cylindrical contact portion.

[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 front view of the contact holding portion shown in Fig. 1 in longitudinal section, Fig. 3 is a bottom view of Fig. 1, and Fig. 4 is a perspective view of the contact 16, FIG. 5 is a plan view of the socket body 11 with the cover 28 removed, FIG. 6 is a perspective view showing the high voltage contact 16h, FIG. 8 is a sectional view taken along the line B to G in FIG. 1, FIG. 9 is a perspective view of the main parts of this invention, FIG. The figure shows how force is applied near the connection hole when the lead wire 37 is pulled. DESCRIPTION OF SYMBOLS 11...Socket body, 13...High voltage discharge gap, 15...Contact accommodating part, 16...Contact, 16h...High voltage contact, 27...
Case, 28... Cover, 36... Connection hole, 37
... Lead wire, 38 ... Elastic contact portion, 51 ... Lead wire holding means, 52 ... Holding piece, 53 ... Claw.

Claims (1)

[Scope of utility model registration request] When a lead wire is inserted into the connection hole formed in the insulating socket body cover, the insertion end of the lead wire comes into elastic contact with the elastic contact connection part, and the elastic contact connection part is held by the socket body. In a cathode ray tube socket that is connected to a high-voltage contact, a holding piece is attached to one side edge of the cover of the socket body near the connection hole so as to be removed from the extension in the lead wire insertion/removal direction so that the holding piece can rotate freely. The end of the holding piece is bent at a nearly right angle, and an engagement hole is formed in the bent part, and when the holding piece is pressed against the side of the main body case, the side of the socket main case A cathode ray tube socket characterized in that the lead wire inserted into the connection hole is held by engaging the claw formed to protrude more protrudingly with the engagement hole, thereby preventing the lead wire from easily coming out.