WO2003092125A1

WO2003092125A1 - Safe socket

Info

Publication number: WO2003092125A1
Application number: PCT/CN2002/000275
Authority: WO
Inventors: Onnfah Foo
Original assignee: Mass Technology (H.K.) Ltd.
Priority date: 2002-04-23
Filing date: 2002-04-23
Publication date: 2003-11-06
Also published as: AU2002308931A1

Abstract

A safe socket includes bayonet holder and screw holder. The former comprises two metallic rods, shell, base, the first and the second spring leaf, a soleplate and two springs. Therein, the metallic rod is installed in a vertical sheath, the head of the rod is extended from the vertical sheath, the bar part of the rod is extended downward through the hole on the soleplate, the spring is installed around the rod and lies between the soleplate and the flange of the metallic rod. The later comprises a shell, three contact spring leafs fixed on the lower side of base, an interior threaded liner bushing, and a contact metallic rod and a retractor device that can make both the metallic rod move relative to the third contact spring leaf and the first contact spring leaf move relative to second contact spring leaf at the same time. When the bulb is installed therein, the top of the bulb pushed downward the metallic rod to contact with third contact spring leaf and to form the galvanic circuit, so to bring the lamp into normal operation. When no bulb is installed therein, the lower of the metallic rod is separated from third spring leaf, so to reach safe requirement for non-electriferous.

Description

FIELD OF THE INVENTION

The invention relates to a lamp holder of an illuminating lamp, in particular to a bayonet lamp holder and a safety lamp holder capable of preventing accidental electric shock. Background of the invention

Lampholders are popular products, such as bayonet lampholders used in conjunction with bayonet caps of lighting lamps and threaded lampholders used in conjunction with screwlight caps of lamps. These lampholders pose an unsafe risk of electric shock during use. When the lamp holder is not equipped with a lighting lamp and the lamp's power switch is on, the metal in the lamp holder is charged. Due to the large diameter of the lamp holder, it is easy for humans to enter, which may cause or cause unsafe phenomena such as electric shock. Summary of the invention

The object of the present invention is to overcome the above-mentioned drawbacks and provide a safety lamp holder of a bayonet lamp cap and a screw lamp cap capable of preventing electric shock of a person.

The technical solution to achieve the above objective is such that the safety base of the bayonet lamp cap of the present invention includes a two-contact metal rod, a vertical sleeve with two metal rods installed at the bottom, and a housing with a flange on the outer peripheral surface. The base also includes:

A first spring leaf and a second spring leaf, one end of each of which is fixed on the flange of the housing through an insulating sleeve and is located below the bottom of the housing;

A base plate provided with two holes and fixed below the housing, while the two holes of the base plate are opposed to each other and located on the same center line with the holes of the two vertical sleeves; and

Two springs installed in the vertical sleeve;

Each contact metal rod has a head, a rod portion, and a shoulder located between the head and the rod portion and having a diameter larger than that of the head and the rod portion. The top of the vertical sleeve has an inward convex ring extending inwardly. ; Each contact metal rod is installed in a vertical sleeve, the head of which protrudes upward from the inner convex ring of the vertical sleeve, and the rod portion thereof extends downward from the hole on the opposite bottom plate, and the spring is sleeved in the metal rod And located between the bottom plate and the shoulder of the metal rod.

The safety base of the bayonet lamp head as described above, wherein the vertical sleeve includes an outer sleeve integrally connected with the housing and an inner sleeve fixedly installed in the outer sleeve, the inner sleeve having an inwardly extending convex protrusion Ring, each contact metal rod is installed in an inner sleeve, the head of which protrudes upward from the inner convex ring of the inner sleeve, and the rod portion thereof protrudes downward from the bottom

1

Confirm this The hole of the plate, the spring is sleeved in the metal rod and located between the bottom plate in the inner sleeve and the shoulder of the metal rod. As described above, the safety base of the bayonet lamp head, wherein the first and second spring leaf contacts are vertically opposite to each other and the distance between the bottom ends of the metal rods is equal to each other.

The safety lamp holder of the threaded lamp cap according to the present invention comprises a housing having an axial hole at the bottom, a contact spring sheet, and an internal thread sleeve, wherein the contact spring sheet is three, a first spring sheet, a A second spring piece and a third spring piece, one end of each of the first and second spring pieces is respectively fixed below the bottom side through an insulating sleeve and is vertically spaced apart from each other at a certain interval, and the third spring piece One end of the sheet is fixed below the other side of the bottom through an insulating sleeve. The lamp holder also includes a contact-type metal rod that is installed at a certain distance from the other end of the third spring sheet and vertically opposite to each other. A telescopic device for elastically moving the metal rod relative to the third spring piece and elastically moving the first spring piece relative to the second spring piece.

The safety lamp holder of the threaded lamp cap as described above, wherein the telescopic device includes:

A sleeve, which is disposed on the lower surface of the bottom with respect to the bottom axial hole;

A push plate comprising a flat plate-shaped plate portion provided with a small hole therein and a rod portion extending vertically downward from one side of the plate portion, said plate portion being movably disposed in the axial direction with respect to the seat cover In the hole, the bottom end of the rod part is in contact with the first spring piece; and

A spring installed in the inner hole of the seat cover and located between the bottom wall of the seat cover and the push plate;

The metal rod has a tapered head portion and a rod portion with a diameter smaller than the head portion. The metal rod is inserted into the small hole of the push plate from the free end of the rod portion, passes through the hole of the spring and the seat cover, and has a tapered head portion. It is located on the push plate, and the lower part of the rod part protrudes from the bottom wall of the seat cover.

As described above, the safety lamp holder of the threaded lamp cap, wherein the peripheral wall on one side of the seat cover has a notch, and the plate portion of the push plate can be located in the notch and can move up and down in the length direction of the notch.

As described above, the safety lamp holder of the threaded lamp cap further includes a conductive member, and the first spring piece and the internal thread sleeve are connected together by welding or screw crimping.

As described above, the safety lamp holder of the threaded lamp cap, wherein the relative distance between the first and second spring pieces is equal to the relative distance between the third spring piece and the bottom end of the rod portion of the metal rod.

As can be seen from the above, in the present invention, for the bayonet-type lamp holder, there are two identical contact metal rods and their metal spring leaf devices, and the two contact metal rods are pressed down by the lamp cap to make them the same as the first It is in contact with the second spring leaf contact to turn on the circuit. When the contact metal rod is raised, the contact metal rod is separated from the first and second spring leaf contacts due to the springback action of the spring, and the circuit is opened. In the case of said separation, there is a sufficient electrical safety distance between the contact metal rod and the first and second spring blades. Therefore, when the lighting is not installed, the contacts are not live, so no electric shock accident will occur. For the threaded lamp holder, the electric contact piece in the original lamp holder is transformed into a contact metal rod The contact-type metal rod is moved relative to the third contact metal piece and the first spring piece is moved relative to the second spring piece along the axial direction to turn on the circuit. On the contrary, the metal rod is elastically retracted to open the circuit. When the lamp is not installed, the contact lever rises due to the elastic effect. An electric contact metal spring leaf is provided below the other end of the contact metal rod, and this spring leaf is a feeding path. The lower end of the rising contact metal rod is separated from the metal spring sheet and has a sufficient electrical safety distance. Therefore, the contact is not charged when no lighting is installed, so no electric shock accident will occur. When the lighting lamp is installed on the lamp holder, the contact metal rod also moves downward due to the downward pressure of the lighting lamp, and the lower end of the contact metal rod is brought into contact with the feeding contact metal sheet to form an electrical Channel, the lighting can work normally.

In addition, the safety lamp holder of the present invention is also applicable to various lamp holders with bayonet lamp holders and threaded lamp holders that require protection against electric shock. For example, the following types of lamp holders: E14, E26, E27, E40, B15D, B22, etc. Brief description of the drawings

1 is a sectional view of a safety lamp holder of a bayonet lamp cap according to an embodiment of the present invention;

2 is a sectional view of a safety lamp holder of a bayonet lamp cap according to a second embodiment of the present invention;

Fig. 3 is a sectional view of a safety lamp holder of a threaded lamp cap according to a third embodiment of the present invention. Detailed description of the invention

Please refer to FIG. 1, a safety lamp holder of a bayonet lamp cap according to an embodiment of the present invention includes a housing 1, a first spring leaf 2 and a second spring leaf 3, a base plate 4, and a two-contact metal rod. 5 和两 Spring 6. The casing 1 has two cylindrical vertical sleeves 12 and 12 'integrated with the casing 1 at the bottom 11 for mounting the metal rod 5, and a flange 13 at the lower part of the outer peripheral surface. In addition, the vertical sleeves 12 and 12 'have inwardly protruding rings on the top or inner surface.

One end of the first spring piece 2 and the second spring piece 3 are respectively fixed on the flange 13 of the casing 1 through the insulating sleeves 21 and 31 and are located below the bottom of the casing 1.

The bottom plate 4 is preferably circular, and is provided with two holes and fixed on the lower surface of the housing, and at the same time, the two holes on the bottom plate 4 are opposed to the holes of the two vertical sleeves 12 and 12 ′. Aligned on the same centerline.

The two-contact metal rods 5 are basically the same, each including a head 51, a rod portion 52, and a shoulder 53 located between the head 51 and the rod portion 52 and having a larger diameter than the head and the rod portion. The contact metal rods 5 are respectively installed in the vertical sleeves 12 and 12 'of the housing 1. Its head 51 projects upward from the inner convex ring of the vertical sleeve, and its rod portion 52 projects downward from the hole of the base plate 4 and The first and second spring pieces 2 and 3 are perpendicular to each other and spaced at a certain distance, and are preferably opposed at an equal distance. The two springs 6 are basically the same, and each is sleeved in the metal rod 5 and is located between the bottom plate 4 and the shoulder 53 of the metal rod, so that the metal rod 5 is pushed upward away from the contact metal rod by the elastic force of the spring itself 5 spaced positions.

In another embodiment, that is, in the second embodiment of the present invention, for the convenience of installation, the vertical sleeve includes a casing 14 and 14 'integrated with the casing 1 and a casing installed or directly inserted into the casing from above. Inner sleeves 15 and 15 '. The tops of the outer sleeves 14 and 14 'are not provided with a convex ring, while the inner sleeves 15 and 15' have a convex ring extending inwardly. Each contact metal rod 5 is installed in an inner sleeve 15 and 15 ′, and its head protrudes upward from the inner convex ring of the inner sleeve 15 and 15 ′, and its rod portion is inserted into the outer jacket 14 as in the above embodiment. And 14 ', its head 51 projects upward from the inner convex ring of the vertical sleeve, and its stem 52 projects downward from the hole of the bottom plate 4'. At this time, the spring sleeve 6 is installed in the metal rod and is located between the bottom plate in the inner sleeves 15 and 15 ′ and the shoulder 53 of the metal rod, as shown in FIG. 2.

On the other hand, the fixed ends of the first and second spring pieces 2 and 3 are connection ends of external power input wires. Therefore, when the connection ends of the first and second spring pieces 2 and 3 are respectively connected to the power feeder, the contact metal rod 5 located above them is not charged.

When the bayonet lamp is mounted on the lamp holder, that is, the bayonet lamp is forced into the lamp holder, because the lamp head is pressed down, it will push the contact metal rod 5 relative to the first spring piece 2 and the second The elastic piece 3 moves axially downward until it contacts the contacts of the first spring piece 2 and the second spring piece 3. In this way, the lamp holder forms an electrical path, and the lighting lamp or bulb can be normally ignited.

When the lighting lamp is removed from the lamp holder, the pressure applied to the contact metal rod 5 is released, and at the same time, the contact metal rod 5 moves upward under the thrust of the spring 6, and the contact metal rod 5 is disengaged from the first and second springs. In slices 2, 3, the contacts are separated to open the circuit. Finally, the contact metal rod 5 returns to its original position under the action of the spring 6. After the circuit is disconnected, the contact metal rods 5 are not charged, and they are separated from each other by a sufficient distance from the first and second spring plates, so no electric shock accident will occur.

Please refer to FIG. 3, which shows a threaded lamp cap safety lamp socket according to a third embodiment of the present invention, which includes a housing 10 having an axial hole 120 at the bottom 110, an internally threaded sleeve 20, and a first The spring piece 30, a second spring piece 40, and a third spring piece 50, a contact-type metal rod 60, and a metal spring 60 that can simultaneously move the metal rod 60 relative to the third spring piece 50 and make the first spring piece 30 A telescopic device that elastically moves with respect to the second spring piece 40.

One ends of the first and second spring pieces 30 and 40 are respectively fixed below one side of the bottom 110 through insulation sleeves 35 and 45 and are vertically opposed to each other at a certain distance from each other. The third spring piece 50 One end is fixed below the other side of the bottom 110 through an insulating sleeve 55. The internally threaded sleeve 20 can be made to be directly conductively connected to the first spring piece 30, or a conductive piece 70 can be used to weld the first spring by welding or screw crimping. The sheet 30 and the internally threaded sleeve 20 are connected together.

The contact-type metal rod 60 includes a head 61 and a rod portion 62 having a diameter smaller than that of the head 61. The top of the head 61 can be made conical to facilitate contact with the lamp cap.

Telescopic devices include:

A sleeve 80 is disposed on the lower surface of the bottom 110 with respect to the axial hole 120 of the bottom 110;

A push plate 90 includes a flat plate-like plate portion 91 provided with a small hole thereon and a rod portion 92 extending vertically downward from one side of the plate portion. The plate portion 91 is movable relative to the seat cover 80. Grounded in the axial hole 120, the bottom end of the rod portion 62 is in contact with the free end of the first spring piece 30. Preferably, a circumferential wall on one side of the seat cover 80 is provided with a notch 81 having a certain length. In this way, the plate portion 91 of the push plate 90 is located in the notch 81 and can move up and down along the length direction of the metal rod 60 in the notch 81. as well as

A spring 100 is installed in the inner hole of the seat cover 80 and is located between the bottom wall of the seat cover 80 and the push plate 90. The metal rod 60 can be inserted into the small hole of the push plate 90 through the free end of the rod portion 62, and can pass through the holes of the spring 100 and the seat cover 80 so that the tapered head 61 is located on the push plate 90. The lower part of 62 projects from the bottom wall of the seat cover 80 and is vertically spaced up and down from the other end (contact end) of the third spring piece 50 at a certain interval.

Preferably, the relative distance between the first and second spring pieces 30 and 40 is equal to the relative distance between the third spring piece and the bottom end of the shaft portion of the metal rod. The fixed ends of the second and third spring pieces 40 and 50 are connection ends for external power input wires.

When the connection ends of the second and third spring pieces 40 and 50 are respectively connected to the power feeder, the contact metal rods located above them and the first spring piece 30 are not charged.

When the lighting lamp is installed on the lamp holder, that is, the screw cap is screwed into the lamp holder, because the lamp head is pushed down, it will push the contact metal rod 60 and simultaneously drive the push plate 90-along the gap 81 The seat cover wall moves axially downward. The downward movement of the push plate 90 will cause the rod portion 92 of the push plate 90 to push the first spring piece 30 below it, so that the axial movement of the contact-type metal rod 60 comes into contact with the third spring piece 50 at the same time. The first spring piece 30 is elastically bent downward to make contact with the second spring piece 40. In this way, the lamp socket forms an electrical path, and the lighting lamp or bulb can be normally ignited and operated.

When the lighting lamp is removed from the lamp holder, the push plate 90 and the contact metal rod 60 move upward at the same time, the contact metal rod 60 is separated from the third spring piece 50, and the first spring piece 30 is separated from the second spring piece 40. The contacts are disconnected to open the circuit. In addition, due to the elastic properties of each spring piece, the original position can be restored. After the circuit is disconnected, the contact metal rod 60 and the first spring leaf 30 are uncharged, and they are separated from the second and third spring leaf Sufficient distance so that no electric shock can occur.

Although the above embodiments have been described in detail for the purpose of explaining the present invention, those skilled in the art can make various changes to the above embodiments without departing from the scope and spirit of the present invention. Additions, deletions, or equivalent substitutions, so the present invention is by no means limited to the above embodiments.

Claims

1. A safety lamp holder, which is a safety lamp holder with a bayonet lamp cap, comprising a two-contact metal rod, a vertical sleeve with two metal rods installed at the bottom, and a housing with a flange on the outer peripheral surface, characterized in that: The safety base also includes:

A first spring leaf and a second weight spring leaf, one end of each of which is fixed to the flange of the casing through an insulation sleeve and is located below the bottom of the casing;

Two springs installed in the vertical sleeve;

Each contact metal rod has a head, a rod portion, and a shoulder located between the head and the rod portion and having a diameter larger than that of the head and the rod portion. The top of the vertical sleeve has an inward convexity extending inwardly. Ring; each contact metal rod is installed in a vertical sleeve, the head of which protrudes from the inner convex ring of the vertical sleeve, and the rod portion thereof projects downward from the hole on the opposite bottom plate, and the spring is sleeved on the metal rod It is located between the bottom plate and the shoulder of the metal rod.

2. The safety lamp holder for a bayonet lamp cap according to claim 1, wherein the vertical sleeve comprises a jacket integrated with the housing and an inner sleeve fixedly installed in the jacket, the inner sleeve With an inwardly protruding ring extending inward, each contact metal rod is installed in an inner sleeve, the head of which protrudes upwardly from the inner convex ring of the inner sleeve, and the rod portion thereof protrudes downward from the hole of the same bottom plate. The spring is sleeved in the metal rod and located between the bottom plate in the inner sleeve and the shoulder of the metal rod.

3. The safety lamp holder for a bayonet lamp cap according to claim 1, wherein the first and second spring leaf contacts are vertically opposed to each other and spaced apart from the bottom end of the metal rod, respectively. Are equal.

4. The safety lamp holder of the bayonet lamp cap according to claim 1 or 2, wherein the fixed ends of the first and second spring pieces are connection ends of external power input lines.

5. A safety lamp holder, which is a screw lamp holder, comprising a housing with an axial hole at the bottom, a contact spring piece, and an internally threaded sleeve, characterized in that the contact spring piece is three A first spring piece, a second spring piece, and a third spring piece, one end of each of the first and second spring pieces is respectively fixed below the bottom side through an insulation sleeve and vertically spaced apart from each other at a certain interval One end of the third spring piece is fixed below the other side of the bottom through an insulating sleeve, and the lamp holder further includes a contact type metal which is installed at a certain distance from the other end of the third spring piece to each other vertically and vertically. A rod, and a telescopic device capable of simultaneously elastically moving the metal rod relative to the third spring piece and elastically moving the first spring piece relative to the second spring piece.

6. The safety lamp holder for a threaded lamp cap according to claim 5, wherein the telescopic device comprises:

7. The safety lamp holder for a threaded lamp cap according to claim 6, wherein a circumferential wall on one side of the seat cover has a notch, and the plate portion of the push plate can be located in the notch and can have a length of the notch. Move up and down.

8. The safety lamp holder for a threaded lamp cap according to claim 5 or 6, further comprising a conductive member, which connects the first spring piece and the internal thread sleeve together by welding or screw crimping.

9. The safety lamp holder for a threaded lamp cap according to claim 5 or 6, characterized in that the relative distance between the first and second spring pieces is opposite to that of the third spring piece and the bottom end of the rod portion of the metal rod The spacing is equal.

10. The safety lamp holder for a threaded lamp cap according to claim 5 or 6, wherein the fixed ends of the second and third spring pieces are connection ends of external power input wires.