# US 10,441,967 B2 · Syringe attachment/detachment mechanism and device provided with mechanism

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- Number: US 10,441,967 B2
- Document ID: US10441967B2
- Status: Granted
- Kind: B2
- Application number: 15/329,359
- Filed: 2015-07-17
- Published: 2017-08-10
- Granted: 2019-10-15
- Earliest claimed: 2014-07-30
- Assignees: Musashi Engineering, Inc.
- Applicants: Musashi Engineering, Inc.
- Inventors: Kazumasa Ikushima
- Web page: https://patentgrep.com/patent/US10441967B2

## CPC

- B05C 11/11: Vats or other containers for liquids or other fluent materials
- B05C 5/00: Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work (B05C7/00 takes precedence; essentially involving spraying or electrostatic projection B05B)
- B05C 5/02: {the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g.} from an outlet device in contact or almost in contact, with the work
- B05C 5/0212: {only at particular parts of the articles (at particular part of web, band, strip, belt or ribbon B05C5/025)}
- B05C 11/00: Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00 (means for manipulating or holding work B05C13/00; enclosures for apparatus, booths B05C15/00; spray booths B05B16/00)
- B05C 13/00: Means for manipulating or holding work, e.g. for separate articles {(B05C1/0821 takes precedence)}
- F16L 37/24: in which the connection is made by inserting one member axially into the other and rotating it to a limited extent, e.g. with bayonet-action
- F16L 19/04: using additional rigid rings, sealing directly on at least one pipe end, which is flared either before or during the making of the connection
- B05C: APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (spraying apparatus, atomising apparatus, nozzles B05B; plant for applying liquids or other fluent materials to objects by electrostatic spraying B05B5/08)
- F16L: PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL

## Abstract

A syringe attachment/detachment mechanism enables a syringe to be easily attached to and detached from a discharge device without causing twisting of a tube, and enabling the syringe and an adapter to be fixedly held in a desired orientation. In the syringe attachment/detachment mechanism and the device provided with the mechanism, the mechanism being adapted for a discharge device to which a syringe including an attachment part and an upper connection part is attached through screwing, the attachment part includes an inner cylindrical portion having a small-diameter opening, an outer cylindrical portion surrounding the inner cylindrical portion, and a screw portion. The attachment/detachment mechanism includes a support member including a cylindrical insertion portion into which the inner cylindrical portion is inserted, and having a channel formed therein for communication between the small-diameter opening and a nozzle of the discharge device. A rotation member includes a screw portion.

## Claims

### Claim 1

A syringe attachment/detachment mechanism for a discharge device, wherein a syringe including an attachment part and an upper connection part is attached to the discharge device through screwing,
wherein the attachment part includes an inner cylindrical portion having an outlet opening, an outer cylindrical portion surrounding the inner cylindrical portion, and a screw portion,
the attachment/detachment mechanism includes a support member nonrotatably fixed to the discharge device and including a cylindrical part having an opening into which the inner cylindrical portion is inserted, the support member having a channel formed therein for communication between the outlet opening and a nozzle of the discharge device,
the attachment/detachment mechanism includes a rotation member rotatably fitted on an outer surface of the cylindrical part of the support member so as to rotate about an axis of the cylindrical part, the rotation member including a screw portion engaging with the screw portion of the attachment part, and
the syringe is attached to the discharge device with rotation of the rotation member.

### Claim 2 (depends on 1)

The syringe attachment/detachment mechanism according to claim 1, wherein the support member has an annular groove formed in a lateral peripheral surface thereof,
the rotation member has a lateral insertion hole positioned in an opposing relation to the annular groove, and
the attachment/detachment mechanism further includes one or more slip-off preventers each extending through both the lateral insertion hole and the annular groove.

### Claim 3 (depends on 1)

The syringe attachment/detachment mechanism according to claim 1, wherein the inner cylindrical portion has a tapered outer peripheral surface becoming thinner toward the outlet opening, and
the cylindrical part is provided with an upper insertion hole having a tapered inner peripheral surface that is contacted with the tapered outer peripheral surface of the inner cylindrical portion.

### Claim 4 (depends on 1)

The syringe attachment/detachment mechanism according to claim 1, wherein the support member includes a support portion having a larger diameter than the cylindrical part, and
the rotation member includes a raised portion having a through-hole into which the cylindrical part is inserted, an operating portion having a larger diameter than the raised portion, and a recess into which the support portion is fitted.

### Claim 5 (depends on 4)

The syringe attachment/detachment mechanism according to claim 4, wherein a lateral surface of the operating portion is treated with a process for anti-slipping.

### Claim 6 (depends on 1)

A discharge device comprising:
a nozzle having a discharge port;
a liquid chamber that is communicated with the discharge port, and that is supplied with a liquid material;
a main body including the liquid chamber formed therein;
a coupling member connected to the main body and including a channel formed therein to be communicated with the nozzle;
a propulsion force applier arranged in the liquid chamber and giving a propulsion force necessary for discharge to the liquid material;
a propulsion-force applier driver configured to operate the propulsion force applier; and a discharge controller,
wherein the discharge device includes the syringe attachment/detachment mechanism according to claim 1.

### Claim 7 (depends on 6)

An application apparatus comprising the discharge device according to claim 6;
a compressed gas source that supplies compressed gas for applying pressure to a syringe;
the syringe including an attachment part and an upper connection part, and being attached to the syringe attachment/detachment mechanism through screwing;
an adapter connected to a tube that communicates the syringe and the compressed gas source with each other, and being mounted to the upper connection part;
a worktable on which an application object is placed;
XYZ-axis drive devices that relatively move the discharge device and the worktable; and
an application controller that controls operations of the XYZ-axis drive devices.

### Claim 8 (depends on 7)

The application apparatus according to claim 7, wherein the upper connection part of the syringe is constituted by an elongate flange extending in one straight line.

### Claim 9 (depends on 7)

The application apparatus according to claim 7, wherein the discharge device is constituted by a plurality of discharge devices arranged in such a state that coupling members of respective discharge devices are positioned parallel to each other.