JPH09291955A - Synthetic resin compression spring - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the necessity of resolving when separation disposing is performed by forming circular through holes similar in size at equal intervals in the cylindrical side face of a synthetic resin and forming sides for connecting corner parts adjacent to a part surrounded by the through holes together in a diamond-shaped through hole recessed inside to be net-like. SOLUTION: A synthetic resin compressing spring 1 includes a thin cylinder 2 made of an elastic resin and having opened upper and lower end surfaces, and on the side face of the cylinder 2, a number of circular through holes 3 similar in size are formed in upper and lower directions and left and right directions at equal intervals. In a part surrounded by four through holes 3, a diamond-shaped through hole 4 having corner parts in upper and lower and left and right sides and a side recessed inside for connecting the adjacent corners is formed and a cylinder side wall is formed to be net-like. Thus, this is used instead of a metallic compression coil spring, and the necessity of resolving is eliminated during separation disposing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic resin compression spring, and more particularly to a synthetic resin compression spring mainly used for a trigger type or head pushing type liquid pouring pump or the like.

[0002]

2. Description of the Related Art Liquid pouring pumps are roughly classified into a head pressing type and a trigger type according to the difference in operation. In the former head pressing type liquid pouring pump, an operating member is moved up and down, and the latter. In the trigger type liquid pouring pump, the plunger is moved back and forth to suck up the liquid in the container body, pressurize the liquid, and pouring out the liquid from the nozzle. The up and down movement of the operating member is performed by repeated "pushing down" and "releasing" operations of the head, and the back and forth movement of the plunger is performed by repeating "pulling" and "releasing" operations of the trigger. Even in the case of a liquid pouring pump, the operation of "releasing" automatically returns the pressed head and the pulled trigger to their original positions. Therefore, a compression coil spring is used in any type of liquid pouring pump.

[0003]

By the way, recently,
In order to effectively use limited resources, when discarding used products and the like, they are separated and discarded for each material such as metal, synthetic resin, and glass, and the collected materials are reused. However, if the above-described conventional compression coil spring is made of metal, it cannot be discarded as it is in the head-pressing type or trigger type liquid pouring pump in which all the members except the compression coil spring are molded of synthetic resin material. Since the compression coil spring must be taken out from the liquid pouring pump and separated and discarded, there is a problem in that the disposal takes time.

The present invention provides a synthetic resin compression spring which can be used as a compression coil spring used in a liquid pouring pump and can be disposed of as it is without being disassembled when the liquid pouring pump or the like is separately disposed of. The main purpose is to do. However, it goes without saying that the synthetic resin compression spring of the present invention can be used for various other purposes.

[0005]

In order to achieve the above object, the first means is a cylinder 2 made of an elastic synthetic resin.
A large number of circular through holes 3 of the same size are formed on the side surface at substantially equal intervals in the vertical direction and the horizontal direction, and
In a portion surrounded by the four through holes 3, a substantially rhombic through hole 4 having upper and lower and left and right corners and each side connecting the adjacent corners is recessed inward is formed. The cylindrical side wall was formed in a net shape.

As a second means, circular cylindrical through holes 13 of the same size are formed on the side surface of the elastic synthetic resin cylinder 12 at substantially equal intervals from the upper left to the lower right and from the upper right to the lower left. A large number of holes are formed, and in the portion surrounded by the four through-holes 13, there are corners at the upper right and lower left corners and the lower left corner, and each side connecting adjacent corners is recessed inward. A diamond-shaped through hole 14 was bored to form the cylindrical side wall in a net shape.

As a third means, on the side surface of the cylinder 22 made of elastic synthetic resin, the same size is provided in parallel and at substantially equal intervals in the diagonally upper left to lower right direction and diagonally upper right to lower left direction, respectively, A large number of substantially rhombic through holes 23 having upper and lower and right and left corners were bored, and the cylindrical side wall was formed in a net shape.

As a fourth means, a long hole 34 is provided around the side surface of a cylinder 32 made of an elastic synthetic resin while leaving a plurality of small connecting portions 33 at substantially equal intervals, and the long holes with the small connecting portions are provided.
A large number of 34 are arranged at substantially equal intervals in the vertical direction, and further, counting from the upper side or the lower side in the vertical direction of the cylinder 32, the small connecting portions 33 in the odd numbered rows are connected to the pair of adjacent small connecting portions 3 in the even numbered rows.
The cylindrical side wall was formed in a net shape by being positioned in the middle in the left-right direction of 3, 33.

[0009]

1 and 2 show, for example, a first embodiment of a synthetic resin compression spring used in a liquid pouring pump. The synthetic resin compression spring 1 has a thin cylinder 2 made of a synthetic resin material having high elasticity, such as polypropylene, polyoxymethylene, or nylon, and having both upper and lower end surfaces opened. And a large number of circular through holes 3 of the same size are formed at substantially equal intervals in the left and right directions, and at the portions surrounded by the four through holes 3, upper and lower and left and right corners are provided. In addition, a substantially rhombus-shaped through hole 4 in which each side connecting adjacent corners is recessed inward is formed,
The above-mentioned cylindrical side wall is formed by connecting five rings 5 on the left and right and above and below the ring 5 that surrounds the circular through hole 3 to form a net shape in which a large number of these rings are arranged.

The operation of the first embodiment will be described below. In FIG. 1 showing the uncompressed state, when the upper end surface of the cylinder 2 is pressed downward, the rings 5 are crushed in the vertical direction and elastically deformed as shown in FIG. 2, and the synthetic resin compression spring 1 moves vertically. Elastically compresses in the direction to generate an upward biasing force. When the pressure on the upper end surface of the cylinder 2 is released from this state,
The rings 5 crushed in the vertical direction elastically restore as shown in FIG. 1, and the synthetic resin compression spring 1 returns to the uncompressed length.

FIGS. 3 and 4 show a second synthetic resin compression spring.
An embodiment will be described. The synthetic resin compression spring 11 is provided with circular through holes 13 of the same size on the side surface of the thin cylinder 12 made of elastic synthetic resin, at substantially equal intervals from the upper left to the lower right and from the upper right to the lower left. A large number of holes are formed, and in a portion surrounded by the four through holes 13, diagonally upper and lower right corners and diagonally upper left and lower corner portions are formed, and each side connecting the adjacent corner portions is indented substantially inward. A large number of these rings are formed by forming a through hole 14 in a shape and connecting the cylindrical side wall with four rings 15 at the upper right and lower left of the ring 15 and the lower left of the oblique upper left of the ring 15 surrounding the circular through hole 13. It is formed in an arrayed mesh. Note that the operation of this embodiment is the same as that of the first embodiment, so description will be omitted.

In the illustrated example of each of the above embodiments, the connecting portion of each ring 5, ..., 15 has the same width as the ring 5, 15, but the connecting portion of each ring 5 ,. The width may be slightly larger than the rings 5,15. Further, in the illustrated example of each of the above-mentioned embodiments, the circular through holes 3 and 13 are formed into elliptical shapes which are slightly long in the horizontal direction, but they may be formed into true circles.

FIGS. 5 and 6 show a third synthetic resin compression spring.
An embodiment will be described. The synthetic resin compression springs 21 are parallel to the oblique upper left to the lower right direction and oblique upper right to the lower left direction on the side surface of the thin synthetic resin cylinder 22 in parallel and at substantially equal intervals, and have the same size in the vertical direction. In addition, a large number of substantially rhombic through holes 23 having corners on the left and right are bored, and the cylindrical side wall is formed in a net shape.

The operation of the third embodiment will be described below. In FIG. 5 showing the uncompressed state, when the upper end surface of the cylinder 22 is pressed downward, the linear portions 24 surrounding the diamond-shaped through holes 23 are crushed in the vertical direction, and as shown in FIG. When deformed, the synthetic resin compression spring 21 elastically compresses in the vertical direction to generate an upward biasing force. When the pressure applied to the upper end surface of the cylinder 22 is released from this state, the linear portions 24 ... Crushed in the vertical direction elastically restore as shown in FIG. 5, and the synthetic resin compression spring 21 is in the uncompressed state. Return to length.

FIGS. 7 and 8 show a fourth synthetic resin compression spring.
An embodiment will be described. The synthetic resin compression spring 31 is provided with a thin cylindrical cylinder 32 made of an elastic synthetic resin, and a long hole 34 is formed on the side surface of the thin cylinder 32 while leaving a plurality of small connecting portions 33 at substantially equal intervals. Arrange a large number in the vertical direction at almost equal intervals,
Further, the odd-numbered small connecting portions 33, which are counted from the upper side or the lower side in the vertical direction of the cylinder 32, are positioned in the left-right direction middle of the pair of adjacent small connecting portions 33, 33 in the even-numbered row, and the cylindrical side wall is meshed. It was formed in.

The operation of the synthetic resin compression spring 31 will be described below. In FIG. 7 showing the uncompressed state, the cylinder
When the upper end surface of 32 is pressed downward, as shown in FIG. 8, the upper and lower edges of each part of the long hole part partitioned by the pair of small connecting parts 33, 33 are located in the middle in the left-right direction of each part of the long hole part. The cylinder 32 is crushed so as to come into contact with it, so that the vertical length of the cylinder 32 is shortened as illustrated. The shortened length is "the vertical width of the long hole 33" x "the number of the long holes 33 formed in the vertical direction of the cylinder 32".
It is represented by ÷ 2. Further, at the time of shortening, the cylindrical side wall portions vertically sandwiching the elongated hole 33 with the small connecting portion are elastically deformed as shown in FIG. 8, so that the synthetic resin compression spring 31 is urged upward. When the pressure on the upper end surface of the cylinder 32 is released from this state, the side wall of the cylinder that vertically sandwiches the long hole 33 with a small connecting portion is elastically restored as shown in FIG. 7, and the synthetic resin compression spring 31 is in an uncompressed state. Return to length. The shape of each part of the long hole portion does not expand in the left-right direction during compression,
The diameter of the cylinder 32 does not change in the uncompressed or compressed state.

The synthetic resin compression springs of the second to fourth embodiments are formed of a synthetic resin material having high elasticity such as polypropylene, polyoxymethylene, or nylon, as in the first embodiment. ing.

[0018]

The respective inventions of claims 1 and 2 are configured as described above, and the synthetic resin compression springs 1 and 11 are provided with circular through holes on the side surfaces of the elastic synthetic resin cylinders 2 and 12. Since a large number of holes 3 and 13 are formed and the side walls of the cylinders are connected to a number of rings 5 and 15 that can be elastically deformed in the vertical direction to form a net shape, the vertical length of the cylinders 2 and 12 in the compressed state is significantly shortened. Moreover, since it can obtain an upward biasing force when compressed, it can be used as a substitute for a metal compression coil spring such as a liquid pouring pump.

Further, the invention according to claim 3 has the above-mentioned constitution, and a synthetic resin compression spring 21 is formed by forming a large number of diamond-shaped through holes 23 on the side surface of the elastic synthetic resin cylinder 22. Since the side walls are formed in a mesh pattern in a lattice pattern, the vertical length of the cylinder 22 in the compressed state can be significantly shortened, and since an upward biasing force can be obtained when compressed, it is made of metal such as a liquid pouring pump. It can be used as an alternative to compression coil springs.

According to a fourth aspect of the present invention, a long hole 34 is provided on the side surface of the elastic synthetic resin cylinder 32 while leaving a plurality of small connecting portions 33 at substantially equal intervals. Hole
A large number of 34 are arranged at substantially equal intervals in the vertical direction, and the small connecting portions 33 in the odd rows, which are counted from the upper side or the lower side in the vertical direction of the cylinder 32, are connected to a pair of adjacent small connecting portions 33 in the even row.
Since the cylindrical side wall is formed in a net shape by being positioned in the middle of the left-right direction of 33, the vertical length of the cylinder 32 in the compressed state can be significantly shortened, and furthermore, when compressed, an upward biasing force can be obtained. It can be used as an alternative to metal compression coil springs such as liquid pouring pumps.

Further, since the synthetic resin compression springs according to the first to fourth aspects are made of synthetic resin material, if this is used for a liquid pouring pump instead of a metal compression coil spring, Since the liquid pouring pump made of all synthetic resin can be manufactured, when the liquid pouring pump is separately disposed of, it can be disposed of as it is without being disassembled, so that the disposal can be easily performed.

[Brief description of drawings]

FIG. 1 is a perspective view showing a synthetic resin compression spring of a first embodiment in an uncompressed state.

FIG. 2 is a perspective view showing the synthetic resin compression spring of the first embodiment in a compressed state.

FIG. 3 is a perspective view showing a synthetic resin compression spring of a second embodiment in an uncompressed state.

FIG. 4 is a perspective view showing a synthetic resin compression spring of a second embodiment in a compressed state.

FIG. 5 is a perspective view showing a synthetic resin compression spring of a third embodiment in an uncompressed state.

FIG. 6 is a perspective view showing a synthetic resin compression spring of a third embodiment in a compressed state.

FIG. 7 is a perspective view showing a synthetic resin compression spring of a fourth embodiment in an uncompressed state.

FIG. 8 is a perspective view showing a synthetic resin compression spring of a fourth embodiment in a compressed state.

[Explanation of symbols]

 1,11,21,31 Synthetic resin compression springs 2,12,22,32 Cylindrical 3,13 Circular through hole 4,14,23 Diamond-shaped through hole 33 Small connecting portion 34 Long hole

Claims (4)

[Claims] 1. A large number of circular through holes 3 of the same size are formed on the side surface of an elastic synthetic resin cylinder 2 at substantially equal intervals in the up-down direction and the left-right direction, and the four through holes are provided. In the portion surrounded by 3, there is formed a substantially rhombic through hole 4 having upper and lower corners, left and right corners, and each side connecting adjacent corners is recessed inward, and the cylindrical side wall is reticulated. A compression spring made of synthetic resin, characterized in that 2. A large number of circular through-holes 13 of the same size are formed on the side surface of the elastic synthetic resin cylinder 12 at substantially equal intervals from the upper left to the lower right and from the upper right to the lower left. In a portion surrounded by the four through holes 13, there is a substantially rhombic through hole 14 in which corners are formed at upper and lower right corners and lower left and upper corners, and each side connecting adjacent corners is recessed inward. The synthetic resin compression spring is characterized in that the cylindrical side wall is formed in a net shape by punching. 3. An elastic synthetic resin cylinder 22 is provided on the side surface of the cylinder 22 in parallel and at substantially equal intervals from the upper left to the lower right and from the upper right to the lower left, and has the same size in the vertical and horizontal directions. A large number of substantially diamond-shaped through holes 23 ...
A synthetic resin compression spring, wherein the cylindrical side wall is formed in a net shape. 4. A long hole 34 is provided around a side surface of a cylinder 32 made of an elastic synthetic resin, leaving a plurality of small connecting portions 33 at substantially equal intervals, and the long holes 34 with small connecting portions are formed substantially vertically. A large number are arranged at equal intervals, and further, counting from the upper side or the lower side in the vertical direction of the cylinder 32, the small connecting portions 33 in the odd numbered rows are positioned in the left-right direction middle of a pair of adjacent small connecting portions 33, 33 in the even numbered rows. The synthetic resin compression spring is characterized in that the cylindrical side wall is formed in a net shape.