JPH0228839Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to attachment of a shoulder member of a thermos bottle.

[Conventional technology]

Conventionally, thermos bottles have an outer case surrounding an inner bottle, which is formed into a tapered cylindrical shape that slightly widens from the top end to the bottom end.The top end of the outer case is bent inward at an acute angle, and a threaded ring is attached to the bottom. At the same time, the lower end of the outer case is curled inward, and an annular fitting groove is formed on the outer peripheral wall of the shoulder member, and the upper surface of the shoulder member is pressed with a press machine, etc., and the bent part of the upper end of the outer case is formed into the fitting groove of the shoulder member. The outer case and shoulder member were connected by force-fitting the inner bottle into the outer case, the inner bottle was inserted from the lower end of the outer case, and the bottom member that pushed up the bottom of the inner bottle was screwed into the threaded ring at the lower end of the outer case. In the case of thermos bottles, it requires a large amount of mechanical power and installation space to forcibly fit the outer case and the shoulder member together, and the fit is also dependent on the depth of the fitting groove of the shoulder member and the bending angle and length of the folded part at the upper end of the outer case. The mating conditions were very irregular, with some having a lot of play in the mated parts and some having poor fit.

[Purpose of invention]

The present invention has been made in view of the above points, and an object of the present invention is to provide a thermos bottle which has a very simple structure, can be easily and reliably assembled, and whose outer case can be firmly engaged with a shoulder member. [Structure of the invention] According to the invention, the upper end of the cylindrical outer case is bent inwardly and downwardly, and the shoulder member is provided with an annular engagement groove that opens upwardly around the shoulder member. The diameter of the shoulder member is configured to be smaller than the diameter of the upper end of the outer case, and the diameters of the engagement groove and the bent portion are substantially the same, and the bent portion is engaged with the engagement groove. It attempts to achieve its purpose through configuration alone.

[Example of idea]

Embodiments of the present invention will be described below with reference to the drawings.

Although the drawing shows an air pressure type thermos flask in which the liquid discharge mechanism also serves as a liquid volume display mechanism, the flask may also be an air pressure type thermos flask with an inner stopper or a handy type thermos flask.

Thermos bottle 1 is an inner bottle 3 surrounded by an outer case 2
, a shoulder member 4 coupled to the upper end of the outer case, a beak member 5 coupled to the front surface of the upper end of the outer case in front of the shoulder member, a hinge member 6 coupled to the rear surface of the upper end of the outer case, and an opening/closing member on the upper surface of the shoulder member. It consists of an upper lid case 7 that can be attached freely, a bottom member 8 that is coupled to the lower end of the outer case and covers the bottom of the inner bottle, and a liquid discharge device 9 that also serves as an indicator of the amount of liquid in the inner bottle and that discharges the liquid in the inner bottle. It is configured.

The exterior case 2 is formed of a thin iron plate into a tapered cylindrical shape that slightly widens from the upper end toward the lower end.
A flange 10 is provided at the upper end of this cylindrical shape, and a threaded ring 11 is stretched inside the lower part to curl the lower end inward. The flange of this exterior case is bent into a hook shape with the tip facing inward and downward. The exterior case has a plurality of through holes 12 arranged vertically in the front wall for the cover body, which will be described later, for locking the cover body. The exterior case has a screw hole 13 for a hinge member in the upper rear end, and holes 14 for handle pins in the upper left and right sides. The threaded ring 11 has a thread for a bottom ring carved on its inner periphery.

The middle bottle 3 is a vacuum double-necked bottle made of glass or stainless steel, with a wide mouth for liquid injection at the upper end and a narrow mouth for dispensing liquid at the lower end, and is a cylindrical body with the narrow opening at the lower end slightly protruding downward. 15.

The shoulder member 4 has an opening 16 in the center that communicates with the upper wide mouth of the inner bottle 3, and a receiving part 17 that expands outward from the upper end of the opening in a shallow cone shape. A shoulder portion 18 is provided, and an outer peripheral wall portion 19 is provided that hangs downward from the outer end of the shoulder portion. Reference numeral 20 denotes an annular seal packing, which is interposed between the lower surface of the peripheral wall 16a forming the opening 16 of the draining member and the wide opening at the upper end of the inner bottle, and prevents liquid from leaking. The shoulder portion 18 of the shoulder member is provided with an annular engagement groove 21 on its circumferential surface that engages the downwardly bent portion of the flange 10 of the outer case, and as shown in FIG. A placement part engagement groove 22 is bored behind the annular engagement groove 21 to engage the rear end of the placement part of a beak member, which will be described later. The outer circumferential wall portion 19 of the shoulder member has an outer circumferential surface at the upper end having an outer diameter smaller than the inner diameter in front of the flange of the outer case, and when the shoulder member is inserted from inside the lower end of the outer case, as shown in FIG. The downwardly bent portion of the flange 10 of the outer case is engaged in the annular engagement groove 21 of the shoulder 18 of the shoulder member. Therefore, it goes without saying that the diameter of the downwardly bent portion of the flange 10 and the diameter of the engagement groove 21 are approximately the same. The outer peripheral wall 19 of the shoulder member has a screw hole 23 for a hinge member at the rear end, and holes 24, 24 for handle pins at the left and right ends.
is installed.

The beak member 5 includes a front cylinder part 25, a rear cylinder part 26,
It consists of a mounting part 27 that surrounds both cylindrical parts and connects both cylindrical parts. The front cylindrical part of the beak member is vertically hollow, into which the tip of a discharge pipe (described later) is inserted, and the lower part is a liquid discharge port 28, and the rear cylindrical part is vertically hollow, into which the rear end of the discharge pipe is inserted. , the lower part is connected to the pumping pipe described below. The mounting portion 27 of the beak member has a mounting portion engaging groove 22 of the shoulder member shoulder portion 18 at the rear end.
A groove engaging piece 29 that engages inside is bored, and the peripheral end of the mounting part is covered by the front part of the upper lid case. Engagement holes 30, 30 are formed on the left and right sides between the front cylinder part and the rear cylinder part of the placement part, respectively, and each of the locking holes 30
A locking piece for locking a locking pawl of the upper cover case, which will be described later, is bored inside each of them. Each of the locking pieces projects inward.

The rear side wall of the mounting portion 27 is fixed to a cover body protrusion of a cover body, which will be described later, with screws.

The hinge member 6 is integrally formed with an upper hinge member 33 that fixes a pivot pin 32 for the upper lid case, and a lower hinge member 34 that fixes the hinge member to the outer case. Pivot pin through holes 35 are bored on the left and right sides of the upper part 33 of the hinge member, and the pin through holes 35 in the hinge piece of the upper cover case and the pivot pin through holes 3 are formed on the left and right sides of the upper part 33 of the hinge member.
5 and the pivot pin 32 is inserted. The lower hinge member 34 has a screw hole 36 drilled from the rear wall toward the front wall, and the screw hole 36 matches the screw hole 13 for the hinge member of the exterior case and the screw hole 23 for the hinge member of the shoulder member. The shoulder member 4, the exterior case 2, and the hinge member 6 are simultaneously fixed by screwing the dowel screw 37.

The upper lid case 7 is attached to the upper surface of the shoulder member with a hinge member 6 so that it can be opened and closed freely, and the bellows pump 38
and an upper plate 39 placed on the upper surface of the bellows pump.
and spring 4 pushing up the bellows pump.
0, a push valve 41 that opens and closes the upper end of the bellows pump, a pusher 42 that presses the upper surface of the pusher valve, and an upper lid 43 that surrounds the bellows pump 38, upper plate 39, pusher valve 41, and pusher 42. , a lower lid 44 that covers the lower surface of the upper lid, and a locking device 45 that locks the upper lid case to the beak member.

The bellows pump 38 has a bellows-shaped central outer periphery, an air inlet opening at the center of the upper and lower ends, an air outlet 47 at the lower end, and a peripheral wall forming the air outlet fitted inside a rubber valve 48 to be described later. ing.

The upper plate 39 is integrally formed with a covering part that covers the upper surface of the bellows pump and a cylindrical part hanging upward from the center of the covering part.

The spring 40 has its lower end in contact with the inner surface of the lower part of the bellows pump, and its upper end in contact between the hanging claw of the push valve and the hanging column, thereby constantly pushing and expanding the bellows pump.

The push valve 41 is formed by integrally molding a disk portion on the top surface, a plurality of hanging claws spaced apart from each other at a predetermined interval on the circumferential surface of the lower end of the disk portion, and a hanging column hanging from the center of the lower end of the disk portion. There is. The hanging claws of the push valve widen outward and are inserted into the air inlet at the upper end of the bellows pump to abut against the lower end of the peripheral wall forming the air inlet.

The pushing body 42 has a pressing part on the top surface, a cylindrical part that hangs downward from the tip of the pressing part and moves up and down inside a guide cylinder of the upper lid, which will be described later, and a part below the guide cylinder from the lower end of the cylindrical body and below the guide cylinder. The expanded push body umbrella part is integrally molded. The pressing part of the pushing body has an abutting part integrally molded on the lower center surface thereof, which abuts on the upper surface of the push valve. The pusher umbrella part has a plurality of vertically elongated holes bored in its circumferential surface through which hanging ribs of a guide tube, which will be described later, pass through. The pusher cap has a notch on its outer circumferential edge that does not come into contact with the upper end of the horizontal rib of the upper cover, which will be described later, when the pusher is lowered. The outer peripheral end is brought into contact with the upper end of the horizontal rib, and the pusher is rotated to match the notch and the horizontal rib during pressing.

The upper lid 43 has a plurality of horizontal ribs on its inner circumferential surface, excluding the front part, which abut the lower end of the pusher umbrella of the pusher body 42 to restrict the descent of the pusher body, and a guide cylinder is provided in the center of the upper surface facing downward. It is installed vertically. The guide cylinder of the upper lid is provided with a plurality of hanging ribs on the outer periphery of the lower end at predetermined intervals and abutting against the upper surface of the covering portion of the upper plate 39. A hinge piece 50 for attaching the upper lid case to the hinge member is provided at the lower rear end of the upper lid, and a through hole for a pivot pin is bored through the hinge piece 50 from side to side. The front part of the upper lid covers the upper surface of the beak member 5, and a locking plate protrusion for fixing a locking plate, which will be described later, is provided on the inside of the front part.
On the left and right sides of the front part of the top lid, knob through holes are provided to pass through the left and right knobs of the lock plate, which will be described later.

The lower lid 44 fits on the inner periphery of the lower end of the upper lid 43, and has an opening for air discharge through a rubber valve 48 in the center of the lower end. The rubber valve 48 is fitted into the air discharge opening of the lower cover, and has a cylindrical part into which the air discharge port of the bellows pump 38 is fitted, and a rubber valve 48 that extends outward from the lower end of the cylindrical part and folds back to bring the tip to the center of the inside. The large curved umbrella part is integrally molded. The umbrella portion of this rubber valve 48 has its tip connected to the central opening 16 of the shoulder member 4.
The folded portion of the umbrella portion is brought into close contact with the upper end of the peripheral wall 16a forming the central opening of the shoulder member, thereby closing the opening.

The locking device 45 consists of a locking plate and a locking ring such as an ear ring or speed washer for locking the locking plate to the locking plate protrusion of the top cover 43. The lock plate is formed in an inverted U-shape in vertical section with the left and right side walls and the top wall, and is provided on the outside of the left and right walls through the knob through hole of the top cover 43, respectively, on the left and right sides of the front part of the top cover. A knob piece is provided that protrudes to the outside of the
Lock pawls are provided which are inserted through the locking holes 30, 30 of the beak member 5 toward the outer lower ends of the left and right side walls of the lock plate and engage with the locking pieces, respectively. The lock plate has a protrusion hole formed in its upper wall to pass through the lock plate protrusion of the upper cover 43.

When assembling the locking device 45, first raise the lock plate having an inverted U-shaped longitudinal section from the lower side of the front part of the upper cover 43 with the lock claw facing downward, and insert the protrusion for the lock plate on the upper cover into the hole for the protrusion on the lock plate. The locking ring is inserted into the knob hole from the inside of the left and right sides of the front part of the top cover 43, respectively, and the locking ring is force-fitted from the lower side of the lock plate toward the protrusion for the lock plate. The knob pieces of the lock plate are passed through and protrude from the left and right sides of the front of the top lid.

The bottom member 8 includes a bottom ring 62 screwed onto the threaded ring 11,
A tightening member 63 screwed to the bottom ring, a bottom plate 64 screwed to the bottom ring, and a rotating ring 65 coupled to the bottom plate.
It is made up of.

The bottom ring 65 is formed in a ring shape, and has a thread cut into its outer periphery to be screwed into the threaded ring, and a thread for a tightening member cut into its inner periphery forming a central opening.
A plurality of angle portions 66, 66 for the bottom plate are integrally molded on the ring-shaped lower end peripheral surface of the bottom ring at predetermined intervals.

The tightening member 63 is formed in a ring shape,
A liquid discharging device described below is provided with a screw carved into the outer periphery to be screwed into the screw for the tightening member of the bottom ring, a central opening with a large diameter, and stretched around the outer periphery of the cylindrical body 15 at the bottom opening of the inner bottle. The first holder is inserted freely.

The bottom plate 64 has a plurality of protrusions 67, 67 on its upper surface that engage with the angle portion 66 of the bottom ring 62, and an engagement protrusion for a rotary ring on its lower peripheral surface. The bottom plate is provided with a cover body locking groove 69 on the front wall for locking the lower end of the cover body, which will be described later.

The rotating ring 65 is loosely fitted into a rotating ring engagement protrusion of the bottom plate 64.

The liquid discharge device 9 includes a lifting pipe 70 that also serves as a liquid level display tube, a communication pipe 71 that communicates between the lifting pipe and the inner bottle, a discharge pipe 72 that discharges the liquid in the inner bottle, and a pipe that connects the communication pipe and the bottom of the inner bottle. A first holder 73 that connects the cylindrical body 15 at the end, and a second holder 74 that connects the pumping pipe and the communication pipe.
, a third holder 75 that connects the discharge pipe and the pumping pipe, and a cover body 76 that covers the front surface of the pumping pipe.

The pumping pipe 70 is formed into a vertically elongated hollow tube made of transparent material such as glass or synthetic resin, and displays the liquid level in the inner bottle at the liquid level position indicated in the pumping pipe. It is visible from the front of the cover body.

The first holder 73, the second holder 74, and the third holder 75 are formed into hollow tubes made of a heat-resistant elastic material such as rubber.

The cover body 76 has the rear cylinder body 26 of the beak member 5 on the upper part.
A cover protrusion 77 is provided to cover the lower part of the beak member, and a screw is screwed into the front surface of the cover protrusion to fix it to the rear side wall of the beak member placement part. This cover body protrusion may be screwed to the exterior case and sandwich the beak member therebetween.

The cover body 76 has a vertically elongated through hole in the center, and a transparent thin plate 79 is stretched inside this elongated hole. Checking the liquid level in 3.

The cover body has through holes 12 for the cover body of the exterior case 2 on the rear wall on both the left and right sides away from the central elongated through hole.
A plurality of cover body locking claws 80, 80 are provided which are inserted through the cover body and locked to the exterior case. Each of the cover body locking claws 80 is formed upward, and is inserted into a through hole for the cover body of the outer case, and is locked to the upper end of the peripheral wall forming the through hole for the cover body.

The cover body 76 is provided with a cover body locking piece 81 that engages with the cover body locking groove 69 of the bottom plate 64 at the lower end. The movement of the lower part of the cover body is restricted by engagement.

The handle 87 has handle pins integrally molded on the inside of both ends, and the handle pin is passed through the handle pin hole 14 of the outer case and the handle pin hole 24 of the draining member to the inside of the outer peripheral wall 19 of the draining member. It is locked in.

[Effect of idea]

As described above, in the present invention, when assembling, it is easy to assemble the outer case by simply turning the outer case upside down, placing the inverted shoulder member and the inner bottle into the outer case in order, and tightening the bottom with the inverted shoulder member. Moreover, the shoulder member can be attached without requiring any mechanical power at all.

In addition, the structure is extremely simple, and the bent portion of the upper end of the outer case facing downward and inward is fitted into the upper-opening engagement groove provided in the shoulder member, making installation easy and reliable. In addition, the upper end of the outer case is provided with a downwardly bent portion as described above, so that the upper end of the outer case itself has strength and is fitted into the engagement groove. This allows for a more durable installation.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of the present invention, FIG. 2 is an exploded perspective view showing essential parts of the present invention, and FIG. 3 is an enlarged view of section A in FIG. 1. 1...Thermos bottle, 2...Outer case, 3...Inner bottle, 4...Shoulder member, 10...Brim part.

Claims (1)

[Scope of utility model registration request] An outer case is provided that surrounds the inner bottle, and the outer case is formed into a tapered cylindrical shape that slightly widens from the upper end to the lower end.A shoulder member is connected to the upper end of the outer case, and the lower end covers the bottom of the inner bottle. In a thermos bottle that is combined with a bottom member that pushes up the inner bottle, the cylindrical outer case has its upper end bent inward and downward, while the shoulder member has an annular engagement groove that opens upward around it. The diameter of the shoulder member is made smaller than the diameter of the upper end of the outer case, and the diameters of the engagement groove and the bent portion are approximately the same, and the bent portion is formed in the engagement groove. A thermos bottle characterized by being engaged with.