JP4243379B2 - Tube weight for aerosol products - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a weight of an aerosol product tube attached to the lower end of a deformable tube for guiding the aerosol contents to a valve mechanism even when the aerosol container, that is, an aerosol container, is laid down or used upside down.
[0002]
[Prior art]
The aerosol container has a tube connected to a valve mechanism that controls the ejection of the aerosol contents, but this tube uses a soft elastic resin that can be easily bent, or a bellows tube is formed in the middle to give flexibility, There is a configuration in which a weight is attached to the lower end. The purpose of this is to move the tip of the tube with a weight so that it always comes into contact with the contents so as not to leave a remaining amount, or to enable inverted injection.
[0003]
Conventionally, as a weight to be fixed to the tip of a tube, there is a weight using a glass or stainless steel sphere having a hole. However, these weights tend to be expensive, and the tube attachment to the hole portion is inefficient because it is press-fitted by hand. In addition, when changing the weight of the weight depending on the contents, it is necessary to change the size of the sphere, and in accordance with this, a holder for assembly has to be newly made again. In addition, when the contents show high viscosity properties, the weight must be made heavy, but there is a drawback that cannot be handled by a glass having a small specific gravity.
[0004]
In some cases, instead of a sphere, a weight obtained by molding a locking portion with a tube into a predetermined shape is used. The weight formed in this way has a relatively low unit price, and the tube mounting can be locked by caulking or another member insert, which can be automated and can improve the assembly efficiency. there were. However, when changing the weight of the weight, there was a problem in terms of versatility because a new mold for making the weight had to be made.
[0005]
Therefore, in order to increase the degree of freedom in changing the weight, for example, a stainless steel tubular weight as described in JP-A-7-330049 has been proposed. This conventional weight is shown in FIGS. A housing 103 having a valve mechanism is attached to a lid 102 fixed to the upper end of the aerosol container 101, and a stem 104 projects from the upper end. The valve mechanism is opened by pressing the stem 104, and the aerosol content 105 is ejected from the nozzle to the outside.
[0006]
Here, the upper end of a tube 106 made of a soft elastic bendable material is inserted and connected to the housing 103, and a tubular weight 107 made of stainless steel is attached to the outer periphery of the lower end of the tube 106. When attaching to the tube 106, the tubular weight 107 was inserted from the lower end and then fixed by caulking. This caulking amount had to be determined appropriately so as not to hinder the flow in the tube 106 and to drop off. In some cases, an off-the-shelf stainless steel tube may be used as the tubular weight 107. In this case, since the cross-sectional deformation due to caulking increases, uniform caulking or partial caulking is performed over the entire length with the slit 108 provided. It was.
[0007]
The tubular weight 107 provided with the slit 108 is bent into a cylindrical shape by bending a plate material having a predetermined thickness in order to realize a required weight depending on the contents, and a position is selected by sliding according to the size of the container at the time of mounting. Then, it was fixed by caulking.
[0008]
[Problems to be solved by the invention]
However, in order to realize the required weight with the conventional tubular weight 107, it was necessary to adjust mainly by the plate thickness. This is because if the length of the weight becomes too long, the flexibility of the tube 106 may be hindered. Therefore, in particular, in the case of corresponding to the content 105 having a high-viscosity property, there is a disadvantage that the plate thickness becomes thick and the caulking load increases. Further, even when a part of the plate is fixed with caulking, since the continuous plate body is deformed as a whole, it is difficult to finely adjust the caulking amount.
[0009]
The present invention has been made to solve the above-mentioned problems of the weight of the conventional tube for aerosol products, the body cost is low, the tube mounting and assembling work can be performed automatically, and the degree of freedom to change the weight. In the case of caulking, an object of the present invention is to provide a weight of a tube for an aerosol product that can fix a heavy weight without increasing the load and can easily manage the cross-sectional deformation of the weight during caulking.
[0010]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the weight of the tube for aerosol products of the present invention is formed by winding, and a part of the winding is crimped and fixed to the tube. The method of press-fitting may be press-fitting or caulking. At least the crimping part has a shape corresponding to the tube diameter. The diameter of the non-crimped part is selected so as to realize a required weight. The crimping part is provided at one end or both ends.
[0011]
As for the winding, it is desirable to form the crimping portion in a loose winding with a thin wire, and form the non-crimping portion in a close winding with a thick wire. When formed in this way, the wire can be crimped to the tube with a smaller load.
[0012]
The winding may use a coil spring, and a tube insertion gap may be formed in a part thereof, and the tube may be crimped and fixed by elasticity between adjacent coils. The tube insertion gap is formed by decentering the small-diameter portion at the coil end, and is provided between this small-diameter portion and the large-diameter portion, or the gap between adjacent coils is expanded by bending the coil end. A possible insertion portion may be provided.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a partial sectional view of an aerosol container, and FIG. 2 is a partial sectional view of a weight attached to an aerosol product tube. The aerosol container 1 has a stem 2 with a nozzle protruding at the upper end, and a housing 3 having a valve mechanism attached to the lower surface thereof. An upper end of a tube 4 made of a soft elastic and bendable material is inserted and connected to the housing 3, and a weight 5 is attached to the outer periphery of the lower end of the tube 4. The weight 5 is formed by a winding, and a part of the winding is fixed to the tube 4 by crimping.
[0014]
The winding diameter of the crimping portion 5a of the weight is a shape corresponding to the tube diameter, and is slightly smaller than the tube diameter at the time of press-fitting and slightly larger in the case of caulking. The winding diameter of the non-crimp part 5b is larger than the tube diameter, and a diameter capable of realizing a required weight is selected. As for the winding, it is desirable to form the crimping part 5a into a loose winding with a thin wire, and form the non-crimping part 5b into a tight winding with a thick wire. When formed in this way, the wire can be crimped to the tube with a smaller load. The weight 5 can be attached to the tube 4 more easily by the combination of the crimping parts 5a and 5a and the non-crimping part 5b. Further, the non-crimped portion 5b having a large inner diameter can increase the weight of the winding with respect to the same length. Moreover, the non-crimping part 5b does not need to be formed in the tight winding. The movement of the weight 5 in the high-viscosity contents can be made smoother and easier by the sparsely wound non-crimped part.
[0015]
When the weight 5 is attached to the tube 4 by caulking, the caulking amount is about 1/100 to 1/10 mm from the outer diameter of the tube 4, but does not hinder the flow in the tube 4 and does not fall off. As appropriate. Since the cross-section deformed portion by caulking is only the thin wire rod crimping portion 5a, the load required for the deformation can be small, the strain can be easily managed, and the inner diameter of the tube can be reduced to a very limited range.
[0016]
The crimping part may be provided at both ends as shown in FIG. 2, or the crimping part 15a only at one end may be provided as shown in FIG. The weights of these weights 5 and 15 are appropriately set depending on the specific gravity of the contents 6, but are generally 1.5 to 3.0 g. For example, in the weight 15 of FIG. 3, the inner diameter of the crimping part 15a is 4.25 mm, and the non-crimping part. The inner diameter of 15b is 5.0 mm, the wire diameter is 0.9 mm, and the length of the winding is 20 mm. The material is stainless steel with high corrosion resistance.
[0017]
The lower end of the tube 4 is movable along the bottom of the aerosol container 1 due to its flexibility and the weight 5, and the sucking position follows the movement of the contents 6 accompanying the inclination of the container 1. The size and mounting position of the weight are determined as appropriate so that the tip of the tube 4 can enter the bottom corner of the aerosol container 1. Although the example of inclination use is shown in FIG. 1, it is applicable also to the type which can be used upside down by changing a tube.
[0018]
Since the material of the weight is a winding, the weight can be easily changed by changing the wire diameter and / or the inner diameter of the non-crimped portion of the winding, and sufficient weight can be obtained without increasing the length of the weight. It is possible to reliably follow the movement of the contents. Therefore, the degree of freedom of the weight shape is increased, and the unit price can be reduced. Also, by determining the inner diameter of the crimping part, either press-fitting or caulking attachment methods can be selected.
[0019]
The winding may use a coil spring, and a tube insertion gap may be formed in a part thereof, and the tube may be crimped and fixed by elasticity between adjacent coils. This embodiment is shown in FIGS. First, the weight 25 shown in FIGS. 4 and 5 is formed by decentering a small diameter portion 25a at the end of the coil, and a tube insertion gap 25c is provided between the small diameter portion 25a and the large diameter portion 26b. The tube insertion gap 25 c is set smaller than the outer diameter of the tube 4. The tube 4 is inserted after the small-diameter portion 25a is moved outwardly to expand the gap, and the small-diameter portion 25a is returned to its original position to hold the tube 4 with its elasticity.
[0020]
Next, the weight 35 shown in FIG. 6 is provided with a tube insertion gap 35c in the middle of the coil with a pitch. The coil end 35a is pushed outward to further widen the gap, and the tube 4 is inserted and set. The part 35a is separated and held between the coil central part 35b by its elasticity. Thus, when the tube is held by the elasticity of the coil spring, a special crimping operation is eliminated.
[0021]
【The invention's effect】
As described above, the weight of the aerosol product tube according to the present invention is formed by winding, and a part of the winding is fixed to the tube by crimping. It can be easily handled, and the attachment method can be freely selected. In the case of caulking, a heavy weight can be fixed without increasing the load, and the deformation of the cross section of the weight during caulking can be easily managed.
[0022]
The weight of the tube for an aerosol product according to claim 2 is such that the crimping portion of the winding is formed into a loose winding with a thin wire, and the non-crimping portion is formed into a tight winding with a large diameter wire. By crimping the wire to the tube, the length of the weight can be shortened.
[0023]
The weight of the aerosol product tube according to claim 3 forms a tube insertion gap in a part of the coil spring, and the tube is crimped and fixed by elasticity between adjacent coils, so that there is no need for press-fitting and caulking.
[0024]
The weight of the aerosol product tube according to claim 4 can make the movement of the weight within the high-viscosity contents smoother and easier by forming the non-crimped portion in a loosely wound manner.
[0025]
The weight of the tube for aerosol products according to claim 5 can be more easily attached to the tube by combining two crimping parts and one non-crimping part.
[Brief description of the drawings]
FIG. 1 is a partial cross-sectional view of an aerosol container.
FIG. 2 is a partial sectional view of a first embodiment of a weight of an aerosol product tube according to the present invention.
FIG. 3 is a partial sectional view of a second embodiment of the weight of the tube for aerosol products according to the present invention.
FIG. 4 is a partial sectional view of a weight using a coil spring which is a third embodiment of the weight of the tube for aerosol products of the present invention.
5 is a cross-sectional view showing a VV cross section of FIG. 4; FIG.
FIG. 6 is a partial sectional view of a weight using a coil spring which is a fourth embodiment of the weight of the tube for aerosol products of the present invention.
FIG. 7 is a front view of an aerosol product tube to which a conventional weight is attached.
FIG. 8 is a partial cross-sectional view of an aerosol container using a conventional weight.
[Explanation of symbols]
4 Tube 5 Weight 5a Crimp part 5b Non-crimp part

Claims (3)

A weight of an aerosol product tube attached to an aerosol product tube that communicates with a valve mechanism that has an upper end suspended in the aerosol container, and a lower end that is open to the bottom of the aerosol container. In the weight of the tube for the aerosol product in which a part of the winding is fixed by crimping to the tube,
The weight of the tube for an aerosol product, wherein the winding is formed such that at least one crimping portion is loosely wound with a thin wire, and the non-crimping portion is tightly wound with a thick wire . A weight of an aerosol product tube attached to an aerosol product tube that communicates with a valve mechanism that has an upper end suspended in the aerosol container, and a lower end that is open to the bottom of the aerosol container. In the weight of the tube for the aerosol product in which a part of the winding is fixed by crimping to the tube,
The weight of the tube for an aerosol product, wherein the winding is formed such that at least one crimping portion is loosely wound with a thin wire, and the non-crimping portion is loosely wound with a thick wire. A weight of an aerosol product tube attached to an aerosol product tube that communicates with a valve mechanism that has an upper end suspended in the aerosol container, and a lower end that is open to the bottom of the aerosol container. In the weight of the tube for the aerosol product in which a part of the winding is fixed by crimping to the tube,
In the winding for an aerosol product, the winding is formed by tightly winding a non-crimped portion with a thick wire and forming a crimped portion at both ends of the non-crimped portion with a thin wire. Weight.

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