JPH08161923A - Replacer for bayonet socket type tubular lamp - Google Patents

Abstract

PURPOSE: To provide a replacer for a bayonet socket type tubular lamp in which the strength of tubular lamp holding force can be adjusted by changing a touching degree between a raised portion and an outside member through the operation of an operation rod so as to change the inward bending degree of the cylinder wall piece of an inside member. CONSTITUTION: A touching degree between a wedge-like protrusion 104 and an outside member 200 is changed by rotating the outside member 200 through the operation of an operation rod, or by sliding a small protrusion 203 along a guide slot 106 through pushing and pulling in a shaft direction. The inward bending degree of the cylinder wall piece 102 of an inside member 100 is changed so as to change the holding force of a bayonet socket type tubular bulb. A replacer for the bayonet socket type tubular bulb in which the strength of tubular lamp holding force can be adjusted with a simple structure is obtained thereby.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an instrument for exchanging a tube attached to a place that is difficult to reach, and in particular, it has a tubular shape as a whole and has a plug-type mouthpiece at one end thereof. Regarding the exchanger.

[0002]

2. Description of the Related Art Conventionally, various appliances for replacing an incandescent light bulb mounted as a street light have been provided. Since these are screw-in type sockets, they can be removed and mounted by rotating the tube.

[0003]

Since the insert-type mouthpiece is configured to hold the tube with the mouthpiece itself, the tube is held with a weak force until the tube is applied to the socket, and thereafter the tube is held. It is necessary to insert the base of the tube into the socket with strong force.

For this reason, it is considered necessary to change the force for gripping the tube in two steps, strength and weakness, and it is considered necessary to make it mechanically complicated. As a result, an appropriate exchanger has not been provided. .

The present invention has been made in view of the above points, and an object thereof is to provide a plug-and-socket type tube exchanger in which the strength of the force for gripping the tube can be adjusted with a simple structure. And

[0006]

In order to achieve the above object, the present invention has an engaging portion for attaching to one end of an operating rod at one end according to claim 1, and an inward portion at a central portion. An outer member having a small-diameter cylindrical hole having a small protrusion to the other end and a large-diameter cylindrical hole coaxially connected to the small-diameter cylindrical hole at the other end, and one end of the outer member It is formed in a tubular shape so as to be rotatably fitted in a small-diameter cylindrical hole, and extends in the circumferential direction and the axial direction of the cylindrical hole into which the small protrusion fits and slides. It has a guide groove, and the central part forms a step that locks to the step between the small-diameter cylindrical hole and the large-diameter cylindrical hole of the outer member, and the other end has a cylindrical expansion for accommodating a tube inside A plurality of cylindrical wall pieces in which a space capable of contracting is formed and a raised portion that abuts the large-diameter cylindrical hole of the outer member is formed on the outer wall surface; With an inner member configured to be branched, by rotating the outer member by operating the operating rod, or by pushing and pulling in the axial direction to slide the small projection along the guide groove, An insertion socket in which the contact state between the raised portion and the outer member is changed to change the degree of inward bending of the cylindrical wall piece of the inner member to change the gripping force of the insertion socket type tube. In the changer of the shaped tube, in the changer of the insert socket type tube according to claim 1, the raised portion projects from the operation rod side of the outer member toward the non-operation rod side. 4. An insert socket bulb exchanger formed as a wedge-shaped projection of increasing volume, claim 3, wherein the ridge in the insert socket bulb exchanger of claim 1 is characterized in that the tubular wall piece is Insertion pocket formed as an outwardly bent protrusion In the changer of the tube-shaped tube and the changer of the plug-in type socket of claim 1, the raised portion extends from the operating rod side of the outer member toward the non-operating rod side. An insert-socket bulb exchanger formed as a wedge-shaped projection with a reduced amount of projection, a ridge in the insert-socket bulb exchanger according to claim 5 according to claim 5. 7. An insert socket bulb exchanger formed as an outwardly bent projection, and formed in the inner member of the insert socket bulb exchanger of claim 6 of claim 6. (EN) Provided is a plug-in socket type tube exchanger in which a cushioning member for receiving the top of the tube is provided at the bottom of the cylindrical space.

[0007]

According to the structure of the first aspect, the following operation is performed. That is, the small protrusion provided in the central portion of the outer member engages with the guide groove provided in the central portion of the inner member, and the guide protrusion slides while being guided by the guide groove. Then, the inner member and the outer member relatively rotate or move in the axial direction within a range in which the small protrusion can slide in the guide groove.
The rotary motion is used when the small protrusion reaches the end of the guide groove and locks the inner member and the outer member. Axial movement is used to axially push or pull the tube to remove or install it.
That is, by pushing or pulling the inner member with respect to the outer member, the raised portion provided on the outer wall surface of the tubular wall piece of the inner member comes into contact with the inner periphery of the upper end of the outer member to push the tubular wall piece inward. Bend or return to the original state. As a result, the gripping force with respect to the tube gripped by the tube gripping portion of the inner member is changed strongly.

Such movement is performed by operating the operating rod attached to the engaging portion of the outer member.

According to the second aspect of the present invention, by pulling the outer member with respect to the inner member through the operation rod, the portion of the wedge-shaped projection as the bulge having a large amount of protrusion is located at the inner periphery of the upper end of the outer member. The cylindrical wall piece is bent inward and pushed to return the cylindrical wall piece to its original state.

According to the third aspect of the present invention, by pulling the outer member with respect to the inner member via the operation rod, the projection of the protrusion formed by bending the tubular wall piece as the raised portion outwardly. When the part with a large amount is brought into contact with the inner circumference of the upper end of the outer member,
The tubular wall piece is pushed inward and bent, and by pushing it in the opposite direction, the tubular wall piece is restored to its original state. According to the configuration of claim 4, by pushing the outer member against the inner member via the operation rod, the portion of the wedge-shaped projection as the raised portion where the protrusion amount is large is brought into contact with the inner circumference of the upper end of the outer member. Therefore, the tubular wall piece is bent inward and pulled to return the tubular wall piece to the original state.

According to the fifth aspect of the present invention, by pushing the outer member against the inner member via the operation rod, the protrusion of the projection formed by bending the cylindrical wall piece as the protruding portion outwardly is formed. Since the portion having a large amount is brought into contact with the inner circumference of the upper end of the outer member, the tubular wall piece is pushed inward and bent, and by pulling it in the opposite direction, the tubular wall piece is restored to its original state.

According to the sixth aspect of the invention, the top portion of the tube is received by the cushioning member provided at the bottom of the cylindrical space formed in the inner member.

[0013]

According to the first aspect of the invention, due to the relative axial movement of the outer member and the inner member, different portions of the raised portions provided on the outer wall surface of the cylindrical wall piece of the inner member are outside. Since the degree of inward bending of the tubular wall piece is changed by contacting the inner peripheral surface of the upper end of the member, the gripping force of the tube by the inner member can be changed. Then, due to the relative rotational movement of the outer member and the inner member, the small projection of the outer member engages with the end of the guide groove of the inner member and both members are locked in the axial direction. The gripping force changed by the directional movement can be fixed.

According to the second aspect of the invention, the tube is held by a strong gripping force by pulling and the tube is held by a weak gripping force by pushing, so that it is difficult to adjust. This is convenient when particularly strong gripping force is required.

According to the third aspect of the invention, since the raised portion can be formed by bending the tubular wall piece, it is easy to manufacture.

According to the fourth aspect of the present invention, since the tube is held by a strong gripping force by pushing and the tube is held by a weak gripping force by pulling, the gripping force is appropriately adjusted. Easy to adjust.

According to the fifth aspect of the invention, since the raised portion can be formed by bending the tubular wall piece, it is easy to manufacture.

According to the sixth aspect of the present invention, since the cushioning member protects the tube, it is possible to prevent the tube from being damaged by an excessively strong acting force.

[0019]

FIG. 1 shows an embodiment of the present invention. In the figure, 100 is an inner member made of resin,
It is also arranged on the inner peripheral side of the resin outer member 200 and is engaged with the outer member 200. The outer member 200 is composed of a cylindrical base 201 and a cylindrical outer cylinder 202 that is continuous with the base 201. Then, one end of the outer member 200, that is, the base 201 at the lower end in the drawing, has an engaging portion for attaching to one end of an operation rod (FIG. 2) described later,
A small-diameter cylindrical hole 204 having a small inward projection 203 is provided in a central portion between the base 201 and the outer cylinder 202,
An outer cylinder 202 connected to a small-diameter cylindrical hole 204 at the other end
Has a large-diameter cylindrical hole 207 as an internal space.

The engaging portion is composed of an operation rod insertion hole 205 and a knock pin hole 206 for locking the operation rod inserted in this insertion hole 205. The outer cylinder 202 is preferably formed of a transparent resin or the like in order to observe the state of the tube held by the inner member 100 disposed inside the outer cylinder 202. The inner member 100 is provided inside the outer member 200.

The inner member 100 is provided with a cylindrical portion 105 whose one end is rotatably fitted into the small-diameter cylindrical hole 204 of the outer member 200, and the outer periphery of the cylindrical portion 105 is provided. The surface is provided with a guide groove 106 that extends in the circumferential direction and the axial direction into which a small protrusion 203 formed of a screw or the like is fitted and slides.

The central portion of the inner member 100 has a small-diameter cylindrical hole 204 and a large-diameter cylindrical hole 207 of the outer member 200.
There is provided a step for locking the step between and. Further, in the tube grip portion 101 provided on the other end side of the inner member 100, that is, on the upper side in the drawing, a cylindrical inflatable / contractible space for housing the tube is formed inside. And
Since the cushioning member 103 made of rubber or the like is provided at the bottom of the space for accommodating the tube, the tube is not damaged even if an excessive force is applied to the tube. Further, the outer wall surface has a large-diameter cylindrical hole 207 of the outer member 200.
It is configured as a plurality of cylindrical wall pieces 102 having wedge-shaped projections 104 as raised portions that abut the upper end inner circumference 208. A cushioning member 103A such as rubber is provided on the inner wall surface of the cylindrical wall piece 102, and grips the tube with a proper cushion and friction.

The outer member 2 is operated by operating the operation rod described later.
00 or rotate or push and pull in the axial direction
3 is slid along the guide groove 106, the contact state between the wedge-shaped projection 104 and the outer member 200 is changed, and the degree of inward bending of the cylindrical wall piece 102 of the inner member 100 is changed, Change the gripping force of the socket-type tube.

FIG. 2 shows an operating rod 300 for engaging the engaging portion of the outer member 200 to perform a tube replacement operation. This operation rod 300 is commercially available, and the knock pin 30 that engages with the engaging portion of the outer member 200.
It is composed of a top having 1 and an elastic rod connected to the top.

FIG. 3 shows a state in which the inner member 100, the outer member 200 and the operating rod 300 shown in FIG. The tube is floating in the air in the figure, but the tube to be replaced by using the exchanger is fixed to the base of the lighting fixture. Then, by operating the operating rod to move the outer member 200 relative to the inner member 100 in a fixed state, the tube is pushed, pulled, or rotated to increase / decrease the gripping force. Remove and fit the ball.

The replacement of the tube, that is, the removal of the old tube and the mounting of the new tube are performed as follows.

First, in order to remove the old tube, (a) the small projection 203 of the outer member 200 is brought into a state in which it is aligned with the point B (FIG. 4) in the guide groove 106 of the inner member 100, and the engaging portion of the outer member 200. The operation rod 300 is connected to. (B)
The operation rod 300 is extended to extend the tube grip portion 1 of the inner member 100.
01 to hold the tube to be replaced. (C) Operation rod 30
0 is rotated to position the small protrusion 203 at the point C, and the operation rod 300 is contracted and rotated while keeping the position at the point C.
Move 03 to point A. Thereby, the outer member 20
The upper end inner circumference 208 of 0 is the wedge-shaped projection 1 of the inner member 100.
Since it strongly abuts on the upper part of 04, the cylindrical wall piece 102 is pushed inward to strongly grip the tube. (D) Pull the operating rod at hand to detach the bulb from the socket of the lighting fixture. Remove the bulb from the exchanger.

Next, in order to mount a new tube, (a) the small projection 203 is positioned at point B, and the new tube is gripped by the tube gripping portion 101. (B) The operation rod 300 is connected to the engaging portion of the outer member 200. (C) The base of the bulb held by the bulb holding portion 101 of the inner member 100 connected to the tip of the operation rod 300 is aligned with the bulb socket of the lighting fixture. (D) The tube is attached to the socket by pushing in the operating rod. (E) The operating rod is pulled at hand to detach the tube gripping portion 101 from the tube. This completes the replacement of the tube.

FIG. 4 shows a side surface shape of the guide groove 106 in the embodiment shown in FIG. This guide groove has two steps extending in the circumferential direction of the cylindrical portion 105.
It is formed in a crank shape in which two parts are connected by one axial part. The right end of the circumferential portion is A and the left end is B, and the axial portion connecting the two is C.

When the operating rod is operated, the small projection 203 of the outer member 200 slides along the shape of the guide groove 106.
As a result of sliding, when the small protrusion 203 is locked at the right end A,
The upper end inner circumference 208 of the outer member 200 abuts the uppermost portion of the wedge-shaped projection 104 of the inner member 100 in the drawing. in this case,
Since the cylindrical wall piece 102 is pushed inward to compress the cylindrical space formed inside, the tube accommodated in this space receives a strong gripping force.

On the other hand, when the small protrusion 203 reaches the left end B from the right end of the guide groove 106 via the axial portion C,
The upper end inner circumference 208 of the outer member 200 has a wedge-shaped projection 104.
Will come into contact with the lower part of. In this case, the outer member 2
00, the force of bending the cylindrical wall piece 102 inwardly does not work, so that only a weak gripping force due to the elasticity of the cylindrical wall piece 102 acts on the tube accommodated in the cylindrical space inside the inner member 100. Is.

FIG. 5 shows a second embodiment of the present invention. In the second embodiment, contrary to the first embodiment shown in FIG. 1, the wedge-shaped projection 104 of the inner member 100 is formed.
The lower the is, the larger the amount of protrusion is. The upper end inner circumference 208 of the outer cylinder 202 of the outer member 200 contacts the wedge-shaped protrusion 104 from above in the drawing.

FIG. 6 shows the shape of the guide groove 106 of the inner member 100 used in the second embodiment shown in FIG. This guide groove 106 is different from the guide groove 106 shown in FIG. 4 and is formed by an L portion formed by a portion of the cylindrical portion 105 extending in the circumferential direction and a portion extending in the axial direction.
It has a letter shape.

When the small protrusion 203 of the outer member 200 is locked to the right end B of the guide groove 106, the outer member 200
The inner circumference 208 of the upper end does not press the wedge-shaped protrusion 104 inward. On the other hand, when the small protrusion 203 approaches the lower end A of the guide groove 106, the outer member 200 is lowered downward in the figure, and the upper end inner circumference 208 of the outer member 200 is lowered.
The cylindrical wall piece 102 is firmly locked to the wedge-shaped projection 104.
Press strongly inward.

FIG. 7 shows a third embodiment of the present invention. In this third embodiment, instead of the wedge-shaped projection 104 in the first embodiment shown in FIGS. 1 and 3,
By projecting the central portion in the longitudinal direction of the cylindrical wall piece 102 toward the outside in a dogleg shape, a bent portion 104A of the cylindrical wall piece as a raised portion is formed, and a function replacing the wedge-shaped projection 104 is performed. . However, since the cylindrical wall piece bending portion 104A is elastically deformed, the gripping force of the tube acts more flexibly than in the first embodiment.

With this structure, the raised portion-related portion can be manufactured more easily than in the first embodiment.

FIG. 8 shows a fourth embodiment of the present invention. In the fourth embodiment, instead of the wedge-shaped projection 104 in the second embodiment shown in FIG. 5, the central portion in the longitudinal direction of the cylindrical tubular wall piece 102 is projected outward in a dogleg shape. , Cylinder wall piece bent portion 10 as raised portion
4A is formed to fulfill the function of replacing the wedge-shaped projection 104. However, since the cylindrical wall piece bending portion 104A is elastically deformed, the gripping force of the tube acts more flexibly than in the first embodiment.

With this structure, the raised portion-related portion can be manufactured more easily than in the second embodiment.

In the above embodiment, each member is formed in a cylindrical shape or provided with a cylindrical hole, but other cylindrical shapes may be used as long as they can rotate.

In the above embodiment, the outer member 200 and the operating rod are engaged with each other by using the knock pin of the operating rod, but this structure varies depending on the structure of the operating rod.

[Brief description of drawings]

FIG. 1 is a perspective view showing external shapes of an inner member 100 and an outer member 200 according to an embodiment of the present invention.

FIG. 2 is a perspective view showing the structure of an operating rod for operating the exchanger of the present invention.

3 is an inner member 100 and an outer member 200 shown in FIG.
6 is an explanatory view showing a state in which the operation rod 300 is assembled and a tube is gripped.

FIG. 4 is a view showing the shape of a guide groove in the embodiment of FIG.

FIG. 5 is an inner member 100 according to a second embodiment of the present invention.
3 is a perspective view showing the outer shape of the outer member 200. FIG.

6 is a diagram showing the shape of a guide groove in the embodiment of FIG.

FIG. 7 is an inner member 100 according to a third embodiment of the present invention.
3 is a perspective view showing the outer shape of the outer member 200. FIG.

FIG. 8 is an inner member 100 according to a fourth embodiment of the present invention.
3 is a perspective view showing the outer shape of the outer member 200. FIG.

[Explanation of symbols]

 100 Inner member 101 Tube grip portion 102 Cylindrical wall piece 103, 103A Cushioning member 104 Raised portion 105 Cylindrical portion 106 Guide groove 200 Outer member 201 Outer member base 202 Outer cylinder 203 Small projection 204 Small diameter cylindrical hole 205 Operation rod insertion Hole 206 Knock pin hole 207 Large-diameter cylindrical hole 208 Upper end inner circumference 300 Operation rod 301 Knock pin

Claims (6)

[Claims] 1. An engaging portion for attaching to one end of an operating rod is provided at one end, a small diameter cylindrical hole having a small inward projection is provided at the center, and the other end is provided. An outer member having a large-diameter cylindrical hole coaxially connected to the small-diameter cylindrical hole, and one end formed in a cylindrical shape so as to rotatably fit in the small-diameter cylindrical hole of the outer member. Along with this, there is a guide groove that extends in the circumferential direction and the axial direction of the cylindrical hole into which the small projection fits and slides in this cylindrical portion, and the central portion is large with the small diameter cylindrical hole of the outer member. Has a step to engage with a step with a cylindrical hole of a diameter, and the other end has a cylindrical inflatable / contractible space for accommodating a tube inside and a large diameter of the outer member on the outer wall surface. An inner member that is configured to be branched to form a plurality of tubular wall pieces that have a raised portion that abuts the tubular hole of the operating rod. Or rotating the outer member by,
By pushing and pulling in the axial direction and sliding the small projection along the guide groove, the contact state between the raised portion and the outer member is changed to the inner side of the cylindrical wall piece of the inner member. A changer for plug-in socket type bulbs that changes the degree of bending to change the gripping force of the plug-in socket type bulb. 2. The exchanger for a plug-in socket type tube according to claim 1, wherein the raised portion is formed as a wedge-shaped protrusion whose projection amount increases from the operation rod side of the outer member toward the counter operation rod side. Inserted socket type tube exchanger. 3. The insert socket type tube exchanger according to claim 2, wherein the raised portion is formed as a protrusion in which the cylindrical wall piece is bent outward. 4. The insert socket type tube exchanger according to claim 1, wherein the raised portion is formed as a wedge-shaped protrusion whose projection amount decreases from the operation rod side of the outer member toward the counter operation rod side. Inserted socket type tube exchanger. 5. The insert socket type tube exchanger according to claim 4, wherein the raised portion is formed as a protrusion in which the cylindrical wall piece is bent outward. 6. A plug socket type tube exchanger according to claim 1, wherein a cushioning member for receiving the top of the tube is provided at the bottom of the cylindrical space formed in the inner member. Tube exchanger.