FR2586791A1 - Device for protecting the flow rate regulation member in a gas-operated cigarette lighter valve - Google Patents

Abstract

Device for protecting the flow rate regulation member in a gas-operated cigarette lighter valve. The invention relates to a device protecting the flow rate regulation member in a gas-operated cigarette lighter valve from the shock wave transmitted by the liquid phase of the gas when the said lighter is dropped. The support 6 of the flow rate regulation member 1 comprises channels 7, 8, 9, 10, arranged as baffles between the reservoir 4 and the flow rate regulation member 1, achieving indirect feeding. The device is intended for gas-operated cigarette lighter valves.

Description

 The present invention relates to a device protecting the flow control member, in a gas lighter valve, from the shock wave transmitted by the liquid phase of the gas during a fall of said lighter.

Although accidental, the fall of a lighter is normally foreseeable, and as such, is the subject of a safety standard specifying the conditions for drop tests
During the fall of a lighter1, more particularly those with the body made of plastic, it turns valve downwards, because the head of the lighter with the sparking device and the cover are heavier. At the time of impact, the liquid contained in the U4CD4UX, 4g; suddenly pushed against the face receiving the valve inducing therein a shock wave (hydraulic ram).

 The member ensuring the expansion and / or evaporation of the gas often consists of a relatively thin and fragile porous membrane, more particularly those whose manufacture is made by stretching (Streching) causing a reinforcement of the resistance in the longitudinal direction. , but a weakening of this resistance in the transverse direction (sensitivity to tearing).

The suppression resulting from the shock wave can cause
~, a disruption of the regulatory body.

 - a rupture of the regulatory body.

in both cases, the use of the lighter after the fall and particularly dangerous, the user not being notified of the change.

 The device according to the invention overcomes this drawback.

 I1 indeed comprises an indirect supply of the valve by a path in baffles upstream of the regulating member, protecting the latter from the shock wave.

 These baffles can be obtained by the combination of a part added to the membrane support, or, preferably, directly by combination of the membrane support and the valve body, thus respecting the number of original parts and therefore the cost price of the valve.

 Figure 1 shows, in section, a valve with direct supply, such Xue known to date.

Figure 2 shows, in section, a valve with indirect supply according to L tinvention.-
The figure ; lWe present, in section1 a variant of this device.

 Figure 4 shows, in section, a variant of this device.

 FIGS. 5 and 6 represent the membrane supports respectively used in FIGS. 2 and 3.

 In FIG. 1, the regulating member (1) clamped between the valve body (2) and the membrane support (3) is supplied directly from the gas tank (4) by the axial channel (5) in ie support (3). In the event of a fall, the shock probe directly overpresses the regulating member (1) (membrane).

 In FIG. 2, the regulating member (1) clamped identically between the valve body (2) and the membrane support (6) is supplied indirectly from the gas tank (4) by, in the support (6) : the lower transverse slot (7) opening into the two peripheral longitudinal grooves (8) (generatrices of the cylinder), which terminate in the two radial holes (9) communicating with the blind axial channel (10) arriving under the member regulation. he device has three successive references to 900 sufficiently limiting the effect of the shock wave. Of course, the embodiment could be simplified by making a single longitudinal groove (8) and a single radial hole (9).

 In the variant of Figure 3, the lower transverse slot (7) and the lon6itudinele) groove (8) of the support (6) are replaced by a helical groove in the support (11) fulfilling the same office.

 In the variant of FIG. 4, the valve of FIG. 1 is completed by a part (12) fitted into the support (3) the supply is ensured by the longitudinal peripheral grooves (13), the transverse slot (14) and the axial channel (5) made blind by the insertion of the part (12). According to the version shown, the grooves (13) and the slot (14) are in the part (12), they could be part of the support (3), the part (12) becoming a simple plug.

 Figures 5 and 6 show the details of embodiment of the supports (6) and (11).

 The device is particularly intended for the protection of the regulating member of gas lighter valves.

Claims (2)

 1) Device protecting the flow regulating member, in a gas lighter valve, from the shock wave transmitted by the liquid phase of the gas during a fall of said lighter, characterized by a succession of channels arranged in baffles interposed between the reservoir (4) and the regulating member (1) providing an indirect supply upstream of said regulating member (1).  2) Device according to claim 1 characterized in that the baffle channels are obtained, by molding, directly in the support () or (11) of the regulating member (1).  ~~~ USt-aispositif according to claim 1 characterized in that the baffle channels are obtained by inserting a part (12) in the support (3) of the regulating member (1).