CN107135009B

CN107135009B - Interphone with extension bar

Info

Publication number: CN107135009B
Application number: CN201710495237.5A
Authority: CN
Inventors: 刘小平
Original assignee: Chongqing Dunda Technology Co ltd
Current assignee: Chongqing Dunda Technology Co ltd
Priority date: 2017-06-26
Filing date: 2017-06-26
Publication date: 2022-12-23
Anticipated expiration: 2037-06-26
Also published as: CN107135009A

Abstract

The invention discloses an interphone with an extension bar, wherein a rear cover of the interphone is provided with an extension bar; the telescopic link comprises the sub-pole that a plurality of pipes nested each other were made, is located outermost sub-pole and inlays in the bar recess of lid behind the intercom, and the end of innermost sub-pole is fixed with the pull ring, and the pull ring is located outside the recess. The transition pipe of the pull ring is in threaded sleeve joint with the tail end of the sub-rod at the innermost layer; two sides of the groove of the back cover are respectively provided with a groove which is parallel to the groove, a first extension tube and a second extension tube are respectively arranged in the two grooves, and the two extension tubes are respectively fixed in the grooves in a dismountable way by a bandage which crosses the grooves; the top end of the outermost sub-pipe of the first telescopic pipe can be inserted into the tail end of the innermost sub-pipe of the telescopic rod and is in threaded sleeve joint with the telescopic rod, and the tail end of the innermost sub-pipe of the first telescopic pipe can be inserted into the top end of the outermost sub-pipe of the second telescopic pipe and is in threaded sleeve joint with the outermost sub-pipe of the second telescopic pipe. The interphone can capture signals in a large range and is very convenient to carry and use.

Description

Interphone with extension bar

Technical Field

The invention belongs to the technical field of interphones, and particularly relates to an interphone capable of adjusting length.

Background

The interphone is a short-distance wireless communication device commonly used in daily production and life, when the interphone is used, the interphone often encounters the situation that the interphone has poor signals, the interphone needs to be lifted to capture the signals, or the interphone extends out of a building, for example, extends out of a window and other slightly open environments to capture the signals, and particularly when the interphone is used outdoors or in a pit, the interphone needs to be lifted or extends to a certain position to capture the signals well to carry out loud conversation. However, the current interphone can only adjust the position of the interphone to capture signals by stretching the arms of people when in use, so that the interphone is inconvenient to use, has a very limited signal capturing range, has extremely limited service performance in the field or in a deep well, cannot communicate in time at a critical gateway, and cannot capture signals due to shelter of a shelter.

Disclosure of Invention

The invention aims to provide an interphone with an extension bar, which effectively solves the technical problems of inconvenience and small capture range when the position is adjusted to capture signals.

The technical scheme of the invention is as follows:

an extension rod is arranged on a rear cover of the interphone and is arranged along the length direction of the interphone; the telescopic rod is composed of a plurality of sub rods which are nested with each other, the sub rods are all made of round tubes, the sub rods positioned on the outermost layer are embedded in a strip-shaped groove of a rear cover of the interphone, a pull ring made of a round ring is fixed at the tail end of the sub rod positioned on the innermost layer, the groove penetrates through one end, away from the antenna, of the rear cover, so that the sub rods except the outermost layer can extend out of the groove, and the pull ring is positioned outside the groove; the pull ring is connected with one end of the transition pipe, and the other end of the transition pipe is inserted into the tail end of the sub-rod at the innermost layer and is in threaded sleeve joint with the tail end;

two sides of the groove of the rear cover are respectively provided with a groove which is parallel to the groove, a first telescopic pipe and a second telescopic pipe are respectively arranged in the two grooves, and the two telescopic pipes are respectively fixed in the grooves in a dismountable way by a bandage which crosses the grooves; the top end of the outermost sub-pipe of the first telescopic pipe can be inserted into the tail end of the innermost sub-pipe of the telescopic rod and is in threaded sleeve joint with the telescopic rod, and the tail end of the innermost sub-pipe of the first telescopic pipe can be inserted into the top end of the outermost sub-pipe of the second telescopic pipe and is in threaded sleeve joint with the outermost sub-pipe of the second telescopic pipe.

Furthermore, each pair of two nested sub-rods or two nested sub-tubes of the telescopic rod, the first telescopic tube and the second telescopic tube are respectively a first pull rod and a second pull rod, and the first pull rod is sleeved on the second pull rod; a plurality of disc spring seats are symmetrically fixed on two sides of the outer wall of the second pull rod, a groove for mounting a disc spring is formed in one end, opposite to the inner wall of the first pull rod, of each disc spring seat, and a small end face of each disc spring can extend out of a groove opening of the groove and is fixed with a ball; two sliding grooves parallel to the axis of the first pull rod are symmetrically formed in two sides of the inner wall of the first pull rod, and a plurality of through holes penetrating through the wall of the first pull rod are formed in the bottoms of the sliding grooves; when the second pull rod is pulled to axially and relatively slide in the first pull rod, the ball slides in the sliding groove and slides into and extends out of the through hole under the action of the disc spring, so that the relative positions of the first pull rod and the second pull rod are fixed; when the ball is pressed back into the through hole at the position where the ball is exposed on the outer wall of the first pull rod, all the balls slide out of the through hole and can enter the sliding groove again.

Further, the inner wall of the perforation is arc-shaped, and the arc-shaped arch of the perforation faces the central axis of the perforation.

Furthermore, one end of the through hole, which is positioned on the outer wall of the first pull rod, is smaller than one end of the through hole, which is positioned on the inner wall.

Furthermore, a clip for hanging on clothes is fixed on the sub-rod on the outermost layer.

Furthermore, the inner parts of the tail ends of the innermost layer sub pipes of the first telescopic pipe and the second telescopic pipe are respectively provided with an internal thread which can be in threaded sleeve joint with the transition pipe.

Furthermore, one end of the bandage is fixed on the edge of one side of the groove, and the other end of the bandage bypasses the corresponding telescopic pipe and is detachably connected with the rear cover through the magic tape.

The invention has the beneficial effects that: the telescopic rod/telescopic pipe is embedded/placed in the strip-shaped groove/groove formed in the rear cover of the interphone, the appearance of the interphone cannot be greatly influenced, the whole interphone is still attractive and harmonious and is convenient to carry, when the interphone needs to be stretched, the telescopic rod is pulled to a proper length by hooking the pull ring with fingers, meanwhile, when the interphone needs to be further moved to a far position, one or two telescopic pipes behind the rear cover can be taken down to be connected into a longer extension rod, and the extension rod is particularly suitable for environments with more shelters which are mistakenly placed in a deep pit or have complicated environments, and can be fully moved to an open position without shelter to receive signals to carry out normal intercommunication. Because the multi-section telescopic extension rod is adopted, the adjustable length range is larger, and the extension rod can be completely contracted, installed and reset when the length is not required to be adjusted, the extension rod is extremely convenient to use and carry, can have a signal capturing capability in a large range in a pit or a closed building with poor signals, has great significance for calling communication in emergency, and can save people's lives at key moments.

Drawings

Fig. 1 is a rear view of the present invention.

Fig. 2 is a rear view of the telescopic rod of the present invention when extended after being connected with two telescopic tubes.

Fig. 3 is a schematic view of the connection structure of two nested sub-rods of the telescopic rod.

Figure 4 is a cross-sectional view of the ball of figure 3 fully slid away from the perforation.

Fig. 5 is a schematic cross-sectional view of the first tie rod through the bore axis.

Fig. 6 is a sectional view a-a of the structure shown in fig. 5.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

The invention is further illustrated by the following examples in conjunction with the accompanying drawings:

as shown in fig. 1-2, in an intercom, a telescopic rod b is arranged on a rear cover a of the intercom, and the telescopic rod b is arranged along the length direction of the intercom; the telescopic rod b is composed of a plurality of sub-rods which are nested with each other, the sub-rods are all made of round tubes, the sub-rod 1 positioned on the outermost layer is embedded in a strip-shaped groove of the interphone rear cover a, and the sub-rod 1 positioned on the outermost layer can be detachably connected in the groove, for example, a plastic hoop is adopted to fix the sub-rod in the groove; of course, the adhesive can also be directly adhered to the groove bottom of the groove. A pull ring 3 made of a circular ring is fixed at the end of the sub-rod 2 at the innermost layer, the groove penetrates through one end of the rear cover a far away from the antenna d, so that the sub-rods except the outermost layer can extend out of the groove when being stretched, and the pull ring 3 is positioned outside the groove so as to be stretched after being hooked by fingers. The pull ring 3 is connected to one end of a short transition pipe 13, and the other end of the transition pipe 13 is inserted into the end of the innermost sub-rod 2 and is screwed on the end of the sub-rod 2, so that the pull ring 3 can be removed when necessary.

Two sides of the groove of the back cover a are respectively provided with a groove which is parallel to the groove, a first extension tube 11 and a second extension tube 12 are respectively arranged in the two grooves, and the two extension tubes are respectively fixed in the grooves by bandages 14 which cross the grooves in a detachable way. The top end of the outermost sub-pipe 1101 of the first telescopic pipe 11 can be inserted into the end of the innermost sub-pipe 2 of the telescopic rod b and is in threaded sleeve joint with the same, and the end of the innermost sub-pipe 1102 of the first telescopic pipe 11 can be inserted into the top end of the outermost sub-pipe 1201 of the second telescopic pipe 12 and is in threaded sleeve joint with the same, so that the two telescopic pipes and the telescopic rod b can form a lengthened telescopic rod piece with a larger extension amount. In this embodiment, the extensible maximum length values of the telescopic rod b, the first telescopic tube 11 and the second telescopic tube 12 can be realized by changing the length and the thickness of each section of sub-rod (sub-tube) according to needs, the multiple sections of sub-rods (sub-tubes) can increase the total extension amount, the thickness is reduced, which is beneficial to nesting multiple sections of sub-rods (sub-tubes), and the extension amount can also be increased. The telescopic rod b and the first and second

telescopic tubes

11 and 12 used in the present embodiment may be telescopic shafts similar to an umbrella, or may be modified in the form of a telescopic fishing rod.

Further, as shown in fig. 3-4, the two sections of sub-rods nested into each other of the telescopic rod b are respectively a first pull rod 4 and a second pull rod 5, the first pull rod 4 is sleeved on the upper end portion of the second pull rod 5, and the lower end of the second pull rod 5 is sleeved on the threaded section at the top end of the upright post 2; a plurality of disc spring seats 6 are symmetrically fixed on two sides of the outer wall of the second pull rod 5, grooves for mounting disc springs 7 are formed in one ends, facing the inner wall of the first pull rod 4, of the disc spring seats 6, small end faces of the disc springs 7 can extend out of the groove openings, and balls 8 are fixed on the small end faces. Two sliding grooves 401 parallel to the axis of the first pull rod 4 are symmetrically formed on two sides of the inner wall of the first pull rod 4, and a plurality of through holes 402 penetrating through the rod wall of the first pull rod 4 are formed in the groove bottom of the sliding grooves 401; when the second pull rod 5 is pulled to axially slide relatively in the first pull rod 4, the ball 8 slides in the sliding groove 401 and slides into and out of the through hole 402 under the action of the disc spring 6, and the ball 8 is partially exposed out of the first pull rod 4 and is clamped, so that the relative positions of the first pull rod 4 and the second pull rod 5 are fixed, and the length of the telescopic rod b is determined. When the position of the outer wall of the first pull rod 4 where the ball 8 is exposed is held, and the ball 8 is pressed back into the through hole 402, all the balls 8 slide out of the through hole 402 and enter the sliding groove 401 again under the pushing and pulling of an external force, so that the second pull rod 5 can slide in the first pull rod 4 so as to slide to the next through hole 402, and the purpose of adjusting the length of the telescopic rod b is achieved. In order to press the ball 8 conveniently, a soft rubber sleeve 10 can be prepared to be sleeved on the extending part of the telescopic rod b when in use, the ball 8 can be pressed conveniently, and the rubber sleeve 10 can be placed in a pocket at ordinary times.

During manufacturing, it should be noted that the elastic coefficient of the disc spring 7 is selected to match the structural dimensions of the pull rod and the ball 8, and may be obtained through multiple experiments or calculation, which is not further explained in the theoretical calculation. The structure of the telescopic rod b is stable and firm, the elastic life and the strength of the disc spring are good, and the reliability and the service life of the telescopic rod b can be improved.

It should be noted here that the first telescopic tube 11 and the second telescopic tube 12 in this embodiment can also adopt the structure of the telescopic rod b.

Further, as shown in fig. 5 to 6, the inner wall of the through hole 402 is arc-shaped, and the arc-shaped dome of the through hole is directed toward the central axis of the through hole 402, so that the ball 8 can smoothly slide in and out.

Further, as shown in fig. 5-6, the through hole 402 is smaller at one end of the outer wall of the first pull rod 4 than at the other end of the inner wall thereof, which not only facilitates the sliding of the ball 8 into and out of the through hole 402, but also effectively prevents the ball 8 from sliding out of the through hole 402, and the structure is more reliable compared with the connection limitation of the ball 8 by the disc spring 7.

Further, as shown in fig. 1, a clip c for hanging on the clothes is fixed on the outermost rod 1 so as to clip the intercom on the clothes or fasten the intercom on the belt, and during the manufacturing, the plastic of the clip c can be injected on the outermost rod 1, or the whole telescopic rod b is made of plastic, and the clip c and the telescopic rod b are integrally formed.

Furthermore, the inner parts of the tail ends of the innermost layer sub-pipes of the first telescopic pipe and the second telescopic pipe are respectively provided with an internal thread which can be in threaded sleeve joint with the transition pipe 13, so that each telescopic pipe can be pulled out.

Further, one end of the bandage 14 is fixed at one side edge of the groove, and the other end of the bandage bypasses the corresponding extension tube (the first extension tube 11 or the second extension tube 12) and is detachably connected with the rear cover a through a magic tape 15, although a connecting piece such as a snap fastener can also be used.

In addition, in all the above embodiments, a micro wireless camera (not shown in the figure) may be provided directly above the signal bar of the intercom for capturing the signal icon on the signal bar, and the wireless camera is connected with an intelligent handheld terminal (a handheld device such as a mobile phone). Above-mentioned wireless camera can adopt universal flexible axle fixed, is equipped with the sucking disc in universal flexible axle bottom, and this sucking disc can adsorb on the shell of intercom to detachably sets up wireless camera, is used for the monitoring signal fence, learns the intercom signal intensity when catching the signal.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. The utility model provides an intercom of area extension bar which characterized in that: a telescopic rod is arranged on a rear cover of the interphone and is arranged along the length direction of the interphone; the telescopic rod is composed of a plurality of sub rods which are nested with each other, the sub rods are all made of round tubes, the sub rods positioned on the outermost layer are fixedly embedded in a strip-shaped groove of a rear cover of the interphone, a pull ring made of a round ring is fixed at the tail end of the sub rod positioned on the innermost layer, the groove penetrates through one end, away from the antenna, of the rear cover, so that the sub rods except the outermost layer can extend out of the groove, and the pull ring is positioned outside the groove; the pull ring is connected with one end of the transition pipe, and the other end of the transition pipe is inserted into the tail end of the sub-rod at the innermost layer and is in threaded sleeve joint with the tail end;

two sides of the groove of the rear cover are respectively provided with a groove parallel to the groove, a first telescopic pipe and a second telescopic pipe are respectively arranged in the two grooves, and the two telescopic pipes are respectively fixed in the grooves by bandages crossing the grooves in a detachable way; the top end of the outermost sub-pipe of the first telescopic pipe can be inserted into the tail end of the innermost sub-rod of the telescopic rod and is in threaded sleeve joint with the tail end of the innermost sub-rod of the telescopic rod, and the tail end of the innermost sub-pipe of the first telescopic pipe can be inserted into the top end of the outermost sub-pipe of the second telescopic pipe and is in threaded sleeve joint with the top end of the outermost sub-pipe of the second telescopic pipe;

wherein, a clip used for hanging on clothes is fixed on the sub-rod at the outermost layer;

the inner parts of the tail ends of the innermost layer sub-pipes of the first telescopic pipe and the second telescopic pipe are respectively provided with an internal thread which can be in threaded sleeve joint with the transition pipe.

2. The interphone with the extension bar of claim 1, wherein: each pair of two nested sub-rods or two nested sub-tubes of the telescopic rod and the first telescopic tube and the second telescopic tube are respectively a first pull rod and a second pull rod, and the first pull rod is sleeved on the second pull rod; a plurality of disc spring seats are symmetrically fixed on two sides of the outer wall of the second pull rod, a groove for mounting a disc spring is formed in one end, opposite to the inner wall of the first pull rod, of each disc spring seat, and a small end face of each disc spring can extend out of a groove opening of the groove and is fixed with a ball; two sliding grooves parallel to the axis of the first pull rod are symmetrically formed in two sides of the inner wall of the first pull rod, and a plurality of through holes penetrating through the wall of the first pull rod are formed in the bottoms of the sliding grooves; when the second pull rod is pulled to axially and relatively slide in the first pull rod, the ball slides in the sliding groove and slides into and extends out of the through hole under the action of the disc spring, so that the relative positions of the first pull rod and the second pull rod are fixed; when the ball is pressed back into the through hole at the position where the ball is exposed on the outer wall of the first pull rod, all the balls slide out of the through hole and can enter the sliding groove again.

3. The interphone with the extension bar of claim 2, wherein: the inner wall of the perforation is arc-shaped, and the arc vault of the perforation faces the central axis of the perforation.

4. The interphone with the extension bar of claim 3, wherein: the end of the through hole, which is positioned on the outer wall of the first pull rod, is smaller than the end of the through hole, which is positioned on the inner wall of the through hole.

5. The interphone with the extension bar of claim 1, wherein: one end of the bandage is fixed at the edge of one side of the groove, and the other end of the bandage is detachably connected with the rear cover through the magic tape after bypassing the corresponding telescopic pipe.