Compression spring and discharger

Abstract

We propose a compression spring that is less prone to sagging. [Solution] A compression spring 100 made of synthetic resin comprises: a first base 1 that contacts an object to which elastic force is applied; a second base 2 provided at a distance from the first base 1; a double-sided fixed elastic portion 10 that is elastically deformable and has a first end 10a integrally connected to the first base 1 and a second end 10b integrally connected to the second base 2; and a cantilever elastic portion 11 that is elastically deformable and has one end integrally connected to either the first base 1 or the second base 2, and the other end not connected to the other of the first base 1 or the second base 2. When the second base 2 is compressed in a direction that brings it relatively closer to the first base 1, the cantilever elastic portion 11 elastically deforms while its other end slideably contacts the other of the first base 1 or the second base 2.

Description

Technical Field

[0001] The present invention relates to a compression spring and a discharger that discharges a content liquid accommodated in a container provided with the compression spring.

Background Art

[0002] As a compression spring, a compression spring such as that disclosed in Patent Document 1 has been known. The compression spring shown in Patent Document 1 is made of synthetic resin and includes a plurality of bases spaced apart from each other in a direction along the axis, and a spiral elastic portion that is elastically deformable in a direction along the axis and connects adjacent annular portions. This compression spring is used, for example, to return an operation portion in a discharger that discharges a content liquid.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, a conventional compression spring has a problem in that stress is likely to concentrate on the root portion of the elastic portion during compression, and thus plastic deformation is likely to occur at the root portion and sagging is likely to occur.

[0005] In view of such problems, an object of the present invention is to propose a compression spring in which sagging is unlikely to occur and a discharger using this compression spring.

Means for Solving the Problems

[0006] The present invention relates to a compression spring made of synthetic resin, comprising: a first base portion that contacts an object to which elastic force is to be applied; a second base portion provided at a distance from the first base portion; a fixed elastic portion on both sides that is elastically deformable and has a first end portion integrally connected to the first base portion and a second end portion integrally connected to the second base portion; and a cantilever elastic portion that is elastically deformable and has one end integrally connected to either the first base portion or the second base portion, and the other end not connected to the other of the first base portion or the second base portion, wherein when the second base portion is compressed in a direction that brings it relatively closer to the first base portion, the cantilever elastic portion elastically deforms while the other end portion slidably contacts the other of the first base portion or the second base portion. [Effects of the Invention]

[0007] In the compression spring of the present invention, one end of the cantilever elastic portion is integrally connected to either the first base portion or the second base portion, while the other end is not connected to the other of the first base portion or the second base portion. Even when compressed, the other end slides relative to the other of the first base portion or the second base portion. That is, stress concentration at the other end can be prevented, making it less prone to fatigue. Furthermore, when the compression spring is compressed, the other end contacts the other of the first base portion or the second base portion, and the cantilever elastic portion undergoes elastic deformation, thus ensuring the elastic force necessary for a compression spring. In addition, since fixed elastic portions are provided on both sides, excessive displacement between the first base portion and the second base portion can be prevented. [Brief explanation of the drawing]

[0008] [Figure 1] This is a perspective view relating to one embodiment of the compression spring according to the present invention. [Figure 2] Figure 1 is a schematic unfolded view of the compression spring shown in Figure 1. [Figure 3] Figure 1 is a side view of the compression spring. [Figure 4] This is a cross-sectional view along line AA shown in Figure 3. [Figure 5] This is a cross-sectional view showing a side view of one embodiment of the discharger according to the present invention. [Figure 6] This is a cross-sectional view along BB shown in Figure 5. [Figure 7] Figure 4 shows the compression spring attached to the discharger shown in Figure 5. [Figure 8] This figure shows the nozzle head in the pressed position, as shown in Figure 5. [Figure 9] This figure shows the state of the compression spring in the condition shown in Figure 8. [Modes for carrying out the invention]

[0009] Hereinafter, a compression spring 100, which is one embodiment of the compression spring according to the present invention, and a discharger 200, which is one embodiment of the discharger according to the present invention, will be described with reference to the drawings. For convenience, the following description will be given in the orientation shown in the drawings, but the compression spring and discharger according to the present invention are not limited to use in this orientation. In this specification, the direction perpendicular to the axis O in a plane perpendicular to the axis O shown in the drawings is sometimes described as the radial direction, and the direction that circles around the axis O in this plane is sometimes described as the circumferential direction.

[0010] First, a compression spring 100, which is one embodiment of the compression spring according to the present invention, will be described with reference to Figures 1 to 4. The compression spring 100 is made of synthetic resin.

[0011] The compression spring 100 includes a first base 1 as shown in Figure 1. The first base 1 is an annular shape that extends along the axis O, as shown in Figure 4, with its lower part protruding radially inward. The compression spring 100 also includes a second base 2, which is an annular shape centered on the axis O and is provided below the first base 1 at a distance from the first base 1. Below the second base 2 are a third base 3, a fourth base 4, a fifth base 5, a sixth base 6, a seventh base 7, and an eighth base 8, all having the same shape as the second base 2, and are provided at the same intervals as the interval between the first base 1 and the second base 2. Below the eighth base 8 is a ninth base 9, which is provided at the same interval as the interval between the first base 1 and the second base 2, and has a shape that is oriented in the opposite direction to the first base 1 in the vertical direction.

[0012] The compression spring 100 is provided with multiple elastic parts that are elastically deformable in the vertical direction between each of the first base part 1 to the ninth base part 9. The elastic parts will be described in detail below.

[0013] As shown in Figures 1 and 2, a double-sided fixed elastic portion (hereinafter referred to as the upper double-sided fixed elastic portion 10) is provided between the first base portion 1 and the second base portion 2, with both ends fixed. The upper double-sided fixed elastic portion 10 has a first end portion 10a integrally connected to the first base portion 1 and a second end portion 10b integrally connected to the second base portion 2. The upper double-sided fixed elastic portion 10 extends at an inclination with respect to the axis O as a whole, and in this embodiment, as shown in Figures 1 and 2, it extends downward to the left when the compression spring 100 is viewed from the outside. The first end portion 10a is connected to the first base portion 1 radially outward, while the second end portion 10b is connected to the second base portion 2 within its radial width. The first end portion 10a also includes a first end curved portion 10c that curves downward from the first base portion 1.

[0014] Furthermore, between the first base 1 and the second base 2, a cantilevered elastic portion (referred to as the first B fixed / second A free elastic portion 11 in this embodiment) is provided at a point circumferentially offset from the upper fixed elastic portions 10 on both sides, with one end fixed and the other end being a free end. The first B fixed / second A free elastic portion 11 comprises a first B fixed end 11a that faces the lower surface of the first base 1 and is integrally connected to the first base 1, and a second A free end 11b that faces the upper surface of the second base 2 and is not connected to the second base 2. As will be explained below, there are multiple cantilevered elastic portions in the compression spring 100, and there are also multiple fixed ends and free ends in the cantilevered elastic portions. Therefore, for convenience, in this specification, the names of the cantilever elastic portion, the fixed end, and the free end will be described with the numbers of the base to which the cantilever elastic portion, the fixed end, and the free end relate, and a code to distinguish the upper and lower surfaces of the base (the upper surface is "A" and the lower surface is "B"). That is, the 1B fixed / 2A free elastic portion 11 means that it is a cantilever elastic portion relating to the lower surface of the 1st base 1 and the upper surface of the 2nd base 2. The 1B fixed end 11a means that it is a fixed end that is connected integrally to and fixed to the 1st base 1, facing the lower surface of the 1st base 1. Note that the 1B fixed end 11a is not limited to being connected integrally to the lower surface of the 1st base 1, but may also be connected integrally to the side surface of the 1st base 1. The 2A free end 11b means that it is a free end located near the upper surface of the 2nd base 2.

[0015] The first B fixed and second A free elastic portion 11 extends at an inclination with respect to the axis O as a whole, and in this embodiment, as shown in Figures 1 and 2, it extends downward to the left when the compression spring 100 is viewed from the outside. That is, the first B fixed and second A free elastic portion 11 extends at an inclination on the same side as the inclination of the upper two fixed elastic portions 10. The first B fixed end 11a is connected to the first base 1 within its radial width. The second A free end 11b is located within its radial width relative to the upper surface of the second base 2.

[0016] Between the second base 2 and the third base 3, below the first B-fixed and second A-free elastic part 11, a second B-free and third A-fixed elastic part 12 is provided. The second B-free and third A-fixed elastic part 12 includes a second B-free end part 12a that faces the lower surface of the second base 2 and is not connected to the second base 2, and a third A-fixed end part 12b that faces the upper surface of the third base 3 and is integrally connected to the third base 3. Further, the second B-free and third A-fixed elastic part 12 extends while being inclined with respect to the axis O as a whole, and in this embodiment, as shown in FIGS. 1 and 2, it extends so as to slope downward to the right when the compression spring 100 is viewed from the outside. That is, the second B-free and third A-fixed elastic part 12 extends while being inclined in the opposite direction to the direction in which the upper both-side fixed elastic parts 10 are inclined. The second B-free end part 12a is located within the radial width with respect to the lower surface of the second base 2, and the third A-fixed end part 12b is connected within the radial width with respect to the upper surface of the third base 3.

[0017] Between the first B-fixed and second A-free elastic part 11 and the second B-free and third A-fixed elastic part 12, a second A·second B connecting part 13 that integrally connects the second A-free end part 11b and the second B-free end part 12a is provided. The second A·second B connecting part 13 is U-shaped so as to be located outside the second base 2 as shown in FIG. 1, and integrally connects the second A-free end part 11b and the second B-free end part 12a.

[0018] The compression spring 100 of the present embodiment includes a plurality (a total of 4 in the present embodiment) of units each composed of the first 1B fixed - second 2A free elastic part 11, the second 2B free - third 3A fixed elastic part 12, and the second 2A - second 2B connecting part 13, which are arranged in series in the vertical direction as shown in FIG. 2. Here, what is provided between the third base 3, the fourth base 4, and the fifth base 5 is referred to as the third 3B fixed - fourth 4A free elastic part 14, the third 3B fixed end part 14a, the fourth 4A free end part 14b, the fourth 4B free - fifth 5A fixed elastic part 15, the fourth 4B free end part 15a, the fifth 5A fixed end part 15b, and the fourth 4A - fourth 4B connecting part 16; what is provided between the fifth base 5, the sixth base 6, and the seventh base 7 is referred to as the fifth 5B fixed - sixth 6A free elastic part 17, the fifth 5B fixed end part 17a, the sixth 6A free end part 17b, the sixth 6B free - seventh 7A fixed elastic part 18, the sixth 6B free end part 18a, the seventh 7A fixed end part 18b, and the sixth 6A - sixth 6B connecting part 19; what is provided between the seventh base 7, the eighth base 8, and the ninth base 9 is referred to as the seventh 7B fixed - eighth 8A free elastic part 20, the seventh 7B fixed end part 20a, the eighth 8A free end part 20b, the eighth 8B free - ninth 9A fixed elastic part 21, the eighth 8B free end part 21a, the ninth 9A fixed end part 21b, and the eighth 8A - eighth 8B connecting part 22.

[0019] That is, the compression spring 100 of the present embodiment includes the following represented by the general formula as the third base 3 and the third 3B fixed - fourth 4A free elastic part 14.

[0020] When N is an integer of 1 or more (in the present embodiment, N = 1, 2, 3), a (2×N + 1)th base provided at an interval on the opposite side of the (2×N - 1)th base with respect to the (2×N)th base, a (2×N + 2)th base provided at an interval on the opposite side of the (2×N)th base with respect to the (2×N + 1)th base, a (2×N + 3)th base provided at an interval on the opposite side of the (2×N + 1)th base with respect to the (2×N + 2)th base, a (2×N + 1)B fixed - (2×N + 2)A free elastic part that is elastically deformable and has a (2×N + 1)B fixed end part integrally connected to the (2×N + 1)th base and a (2×N + 2)A free end part not connected to the (2×N + 2)th base, An elastic part having an elastically deformable (2×N+3)A fixed end that is integrally connected to the (2×N+3) base and a (2×N+2)B free end that is not connected to the (2×N+2) base, The (2×N+2) base is further equipped with a (2×N+2)A-(2×N+2)B connecting portion which integrally connects the (2×N+2)A free end and the (2×N+2)B free end on the outside of the (2×N+2) base.

[0021] Furthermore, the compression spring 100 of this embodiment is provided with a total of two sets of assemblies, each composed of the four units described above, offset in the circumferential direction.

[0022] Furthermore, the compression spring 100 of this embodiment is provided with a second B fixed / third A free elastic portion 23 located between the second base portion 2 and the third base portion 3, below the upper fixed elastic portions 10 on both sides. The second B fixed / third A free elastic portion 23 comprises a second B fixed end portion 23a that faces the lower surface of the second base portion 2 and is integrally connected to the second base portion 2, and a third A free end portion 23b that faces the upper surface of the third base portion 3 and is not connected to the third base portion 3. The second B fixed / third A free elastic portion 23 extends at an inclination with respect to the axis O as a whole, and in this embodiment, as shown in Figures 1 and 2, it extends downward to the right when the compression spring 100 is viewed from the outside. That is, the second B fixed / third A free elastic portion 23 extends at an inclination on the same side as the inclination of the second B free / third A fixed elastic portion 12 described above. The second B fixed end portion 23a is connected to the second base portion 2 within its radial width. Furthermore, the third A free end portion 23b is located within the radial width relative to the upper surface of the third base portion 3.

[0023] Between the third base 3 and the fourth base 4, below the second B fixed / third A free elastic portion 23, a third B free / fourth A fixed elastic portion 24 is provided. The third B free / fourth A fixed elastic portion 24 comprises a third B free end 24a that is not connected to the third base 3 and faces the lower surface of the third base 3, and a fourth A fixed end 24b that is integrally connected to the fourth base 4 and faces the upper surface of the fourth base 4. The third B free / fourth A fixed elastic portion 24 extends at an inclination with respect to the axis O, and in this embodiment, as shown in Figures 1 and 2, it extends downward to the left when the compression spring 100 is viewed from the outside. That is, the third B free / fourth A fixed elastic portion 24 extends at an inclination to the same side as the inclination of the third B fixed / fourth A free elastic portion 14 described above. The third B free end 24a is located within the radial width relative to the lower surface of the third base 3, and the fourth A fixed end 24b is connected to the fourth base 4 within the radial width.

[0024] Between the 2B fixed / 3A free elastic portion 23 and the 3B free / 4A fixed elastic portion 24, there is a 3A-3B connecting portion 25 that integrally connects the 3A free end 23b and the 3B free end 24a. The 3A-3B connecting portion 25 is U-shaped, similar to the 2A-2B connecting portion 13 described above, and is located on the outside of the 3rd base portion 3, integrally connecting the 3A free end 23b and the 3B free end 24a.

[0025] The compression spring 100 of this embodiment is equipped with multiple units (a total of two in this embodiment) consisting of a second B fixed / third A free elastic portion 23, a third B free / fourth A fixed elastic portion 24, and a third A / third B connecting portion 25, arranged in series in the vertical direction as shown in Figure 2. Here, the parts provided between the fourth base 4, the fifth base 5, and the sixth base 6 are referred to as the fourth B fixed / fifth A free elastic part 26, the fourth B fixed end 26a, the fifth A free end 26b, the fifth B free / sixth A fixed elastic part 27, the fifth B free end 27a, the sixth A fixed end 27b, and the fifth A / fifth B connecting part 28. The parts provided between the sixth base 6, the seventh base 7, and the eighth base 8 are referred to as the sixth B fixed / seventh A free elastic part 29, the sixth B fixed end 29a, the seventh A free end 29b, the seventh B free / eighth A fixed elastic part 30, the seventh B free end 30a, the eighth A fixed end 30b, and the seventh A / seventh B connecting part 31.

[0026] In other words, the compression spring 100 of this embodiment includes the fourth base portion 4 and the fourth B fixed / fifth A free elastic portion 26, which are represented by the following general formula.

[0027] When M is an integer greater than or equal to 1 (in this embodiment, M=1, 2), A (2×M+2) base is provided on the opposite side of the (2×M) base, with a gap between them, The (2×M+3) base is provided at a distance from the (2×M+1) base on the opposite side of the (2×M+2) base, The (2×M+4) base is provided at a distance from the (2×M+2) base on the opposite side of the (2×M+3) base, A (2×M+2)B fixed-(2×M+3)A free elastic part having an elastically deformable (2×M+2)B fixed end integrally connected to the (2×M+2) base and a (2×M+3)A free end that is not connected to the (2×M+3) base, An elastic part having an elastically deformable (2×M+3)B free and (2×M+4)A fixed end that is integrally connected to the (2×M+4) base and a (2×M+3)B free end that is not connected to the (2×M+3) base, The (2×M+3) base is equipped with a (2×M+3)A-(2×M+3)B connecting portion which integrally connects the (2×M+3)A free end and the (2×M+3)B free end on the outside of the (2×M+3) base.

[0028] Furthermore, the compression spring 100 of this embodiment includes a double-sided fixed elastic portion (hereinafter referred to as the lower double-sided fixed elastic portion 32) whose ends on both sides are fixed between the eighth base portion 8 and the ninth base portion 9. The lower double-sided fixed elastic portion 32 has an eighth end portion 32a integrally connected to the eighth base portion 8 and a ninth end portion 32b integrally connected to the ninth base portion 9. The lower double-sided fixed elastic portion 32 extends at an inclination with respect to the axis O as a whole, and in this embodiment, as shown in Figures 1 and 2, it extends downward to the right when the compression spring 100 is viewed from the outside. That is, the lower double-sided fixed elastic portion 32 extends at an inclination on the same side as the inclination of the eighth B free and ninth A fixed elastic portion 21 described above. The eighth end portion 32a is connected to the eighth base portion 8 within its radial width, while the ninth end portion 32b is connected to the ninth base portion 9 radially outward. Furthermore, the ninth end portion 32b is provided with a ninth end curved portion 32c that curves upward from the ninth base portion 9.

[0029] In the compression spring 100 having this configuration, as shown in Figure 2, the second base portion 2 is integrally connected to the first base portion 1 via the upper fixed elastic portions 10 on both sides. The fourth base portion 4, the sixth base portion 6, and the eighth base portion 8 are integrally connected by the integrally connected second B fixed / third A free elastic portion 23, third B free / fourth A fixed elastic portion 24, and third A / third B connecting portion 25, etc. Furthermore, the first base portion 1, the third base portion 3, the fifth base portion 5, the seventh base portion 7, and the ninth base portion 9 are integrally connected by the integrally connected first B fixed / second A free elastic portion 11, second B free / third A fixed elastic portion 12, and second A / second B connecting portion 13, etc. In addition, the eighth base portion 8 is integrally connected to the ninth base portion 9 via the lower fixed elastic portions 32 on both sides. In other words, the compression spring 100 is configured as a single component.

[0030] Furthermore, as shown in Figures 1 to 4, in the state before the ninth base 9 approaches the first base 1 (before compression), the second A free end 11b of the first B fixed / second A free elastic part 11, etc., is not integrally connected to the second base 2, etc. When compressed, the second A free end 11b, etc., slides circumferentially relative to the second base 2, etc. In other words, stress concentration at the second A free end 11b, etc., can be prevented, so the compression spring 100 is less prone to sagging. Also, when compressed, the second A free end 11b, etc., comes into contact with the second base 2, etc., as shown in Figure 9, and the first B fixed / second A free elastic part 11, etc., undergoes elastic deformation, so the compression spring 100 can exert the necessary elastic force.

[0031] Furthermore, as shown in Figures 1 and 2, the first end 10a of the upper fixed elastic section 10 is connected radially outward to the first base 1. That is, if the first end 10a were connected to the lower surface of the first base 1, when compressed, a downward force from the first base 1 would be applied directly to the upper fixed elastic section 10, making it prone to stress concentration. However, if it is connected radially outward to the first base 1, the force from the first base 1 will pass through the radially outward side of the first base 1, thus mitigating stress concentration. In addition, the first end 10a is equipped with a first end curved portion 10c, and because the length of the upper fixed elastic section 10 is increased by the presence of the first end curved portion 10c, it becomes possible to gently flex the upper fixed elastic section 10, thereby suppressing sagging.

[0032] Furthermore, since the lower fixed elastic portions 32 are connected radially outward to the ninth base 9, similar to the first end portion 10a described above, stress concentration can be reduced compared to the case where the ninth end portion 32b is connected to the lower surface of the ninth base 9. In addition, the ninth end portion 32b is equipped with a ninth end curved portion 32c, which increases the length of the lower fixed elastic portions 32, allowing the lower fixed elastic portions 32 to bend gently and suppressing sagging.

[0033] Furthermore, as shown in Figure 2, the upper fixed elastic portion 10, the first B fixed / second A free elastic portion 11, and the second B free / third A fixed elastic portion 12 of this embodiment extend at an inclination with respect to the axis O, with the first B fixed / second A free elastic portion 11 inclined to the same side as the upper fixed elastic portion 10, and the second B free / third A fixed elastic portion 12 inclined to the opposite side as to the upper fixed elastic portion 10. In other words, if the first B fixed / second A free elastic part 11 is tilted to the opposite side with respect to the upper side fixed elastic parts 10, the upper side fixed elastic parts 10 and the first B fixed / second A free elastic part 11 must be separated in the circumferential direction to avoid interference between them in the circumferential direction. This increases the size of the compression spring 100. However, in this embodiment, the circumferential distance between the first B fixed / second A free elastic part 11 and the upper side fixed elastic parts 10 can be reduced, thus enabling miniaturization of the compression spring 100. Furthermore, if the 1B fixed / 2A free elastic part 11 and the 2B free / 3A fixed elastic part 12 are tilted to the same side, the circumferential length of these elastic parts will increase. However, if the 2B free / 3A fixed elastic part 12 are tilted to the opposite side relative to the 1B fixed / 2A free elastic part 11, the circumferential length of these elastic parts will decrease, thus enabling further miniaturization of the compression spring 100.

[0034] Next, the dispenser 200 using this compression spring 100 will be described with reference to Figures 5 and 6. The dispenser 200 of this embodiment is used by being attached to the mouth of a bottle-shaped container (not shown). The liquid to be dispensed by the dispenser 200 is, for example, cosmetics (such as lotion or toner), shampoo, body soap, hand soap, facial cleanser, etc.

[0035] As shown in Figure 5, the discharger 200 consists of a cylinder 51, a valve member 52, a pipe 54, an internal member 55, a piston 56, a cylindrical member 57, a holder 58, a packing 59, a cap 60, a nozzle head 61, and a compression spring 100. Here, the nozzle head 61 is a component that constitutes the "operating part" in this specification. Each component constituting the discharger 200 is basically shaped around an axis O and is made of a soft or hard synthetic resin. Figure 5 shows the state in which the nozzle head 61 is at its upper limit, and Figure 8 shows the state in which the nozzle head 61 is at its lower limit.

[0036] The cylinder 51 has a disc-shaped bottom wall portion 51a with a central part protruding upward, a cylindrical cylindrical wall portion 51b rising from the outer edge of the bottom wall portion 51a, and a flange wall 51c extending radially outward from the upper part of the cylindrical wall portion 51b. A through hole (suction port 51d) is provided in the central part of the bottom wall portion 51a that protrudes upward. A cylindrical retaining cylinder 51e is provided on the lower surface of the bottom wall portion 51a, surrounding the suction port 51d and extending downward to hold the pipe 54. A through hole (vent 51f) is provided in the cylindrical wall portion 51b.

[0037] The valve member 52 comprises a base portion 52a, a valve body portion 52b that covers the suction port 51d inside the base portion 52a and sits on the upper surface of the bottom wall portion 51a, and an elastically deformable connecting piece 52c that connects the base portion 52a and the valve body portion 52b. The valve member 52 functions as a check valve, and when the inside of the cylinder 51 becomes depressurized, the valve body portion 52b that was closing the suction port 51d separates from the bottom wall portion 51a, allowing the suction port 51d to open.

[0038] In this embodiment, the base portion 52a is shaped like a capped cylinder and has an opening (not shown) through which the liquid contents that have passed through the suction port 51d pass. The base portion 52a is fitted and held to the inner circumferential surface of the cylinder wall portion 51b, thereby holding the valve member 52 inside the cylinder 51.

[0039] The pipe 54 is hollow, and its upper end is inserted into and fitted into the retaining cylinder 51e.

[0040] The internal member 55 is positioned inside the cylinder 51 and moves up and down relative to the cylinder 51. The internal member 55 comprises a cylindrical connecting cylinder 55a and a bottom portion 55b that closes the lower end of the connecting cylinder 55a and extends radially outward. The connecting cylinder 55a is provided with a hole (communication opening 55c) that passes through it, and the upper surface of the bottom portion 55b is provided with an annular portion 55d that is located radially outward from the connection portion with the connecting cylinder 55a.

[0041] The piston 56 is inserted through the connecting cylinder 55a and positioned inside the cylinder 51. The piston 56 in this embodiment has an annular base 56a. The outer edge of the base 56a is provided with an outer sliding piece 56b that extends upward and downward from the base 56a. The outer sliding piece 56b is in liquid-tight contact with the inner circumferential surface of the cylinder wall 51b in a slidable manner. The inner edge of the base 56a is provided with an inner sliding piece 56c that extends upward and downward from the base 56a. The lower part of the inner sliding piece 56c is in liquid-tight contact with the annular portion 55d, and the upper part of the inner sliding piece 56c is in liquid-tight contact with the inner circumferential surface of the enlarged diameter portion 57b of the cylindrical member 57, which will be described later.

[0042] The cylindrical member 57 is a member that is tubular overall. The cylindrical member 57 has a cylindrical stem 57a and an enlarged diameter portion 57b that is connected to the lower end of the stem 57a and has a larger diameter than the stem 57a. When the connecting cylinder 55a is inserted into the stem 57a, the two are fitted together, so the internal member 55 and the cylindrical member 57 move integrally with respect to the cylinder 51.

[0043] The holder 58 comprises a cylindrical outer holder portion 58a that is fitted and held to the inner circumferential surface of the cylindrical wall portion 51b, and a cylindrical inner holder portion 58b that is located radially inward of the outer holder portion 58a with a gap between them. A flange 58c extending radially outward is provided at the upper end of the outer holder portion 58a. By fitting the holder 58 to the cylindrical wall portion 51b, the internal members 55, piston 56, and cylindrical member 57 are prevented from coming out of the cylinder 51. Furthermore, the ninth base portion 9 of the compression spring 100 is inserted between the outer holder portion 58a and the inner holder portion 58b, and the compression spring 100 is supported from below by the holder 58.

[0044] The packing 59 is an annular plate shape and is inserted through the cylindrical wall portion 51b of the cylinder 51 and fitted and held in place therewith. When the dispenser 200 is attached to a container (not shown), the packing 59 is sandwiched between the mouth of the container and the flange wall 51c. This prevents problems such as the contents spilling out of the mouth when the container is tipped over.

[0045] The cap 60 is disc-shaped and has a top wall 60a with a through hole in the center. The outer edge of the top wall 60a is provided with a cylindrical lower peripheral wall 60b that extends downward. The upper part of the inner peripheral surface of the lower peripheral wall 60b bulges radially inward, allowing it to fit and hold the flange wall 51c, thereby holding the cylinder 51 in the cap 60. The inner peripheral surface of the cap 60 is also provided with a female threaded portion 60c that screws onto a male threaded portion provided at the mouth of the container, and the cap 60 can be attached to the container by screwing the male threaded portion and the female threaded portion 60c together.

[0046] The cap 60 also has a cylindrical upper peripheral wall 60d that extends upward from the outer edge of the top wall 60a. As shown in Figures 5 and 6, the upper peripheral wall 60d has four grooves (a small groove 60e for the standby position, a large groove 60f for the standby position, a small groove 60g for the operating position, and a large groove 60h for the operating position) formed by recessing the inner surface of the upper peripheral wall 60d radially outward. Here, the large groove 60f for the standby position is wider in the circumferential direction than the small groove 60e for the standby position, and the large groove 60h for the operating position is wider in the circumferential direction than the small groove 60g for the operating position. The vertical length of the small groove 60g for the operating position and the large groove 60h for the operating position extends long from the upper end of the upper peripheral wall 60d to the upper surface of the top wall 60a. On the other hand, in the circumferential direction, between the operating position small groove 60g and the standby position small groove 60e, and between the operating position large groove 60h and the standby position large groove 60f, a stepped portion 60j is provided that extends upward from the top wall 60a, and the depths of the standby position small groove 60e and the standby position large groove 60f are smaller than those of the operating position small groove 60g and the operating position large groove 60h.

[0047] The nozzle head 61 is cylindrical and includes a connecting cylindrical portion 61a into which a stem 57a is inserted and fitted and held. The upper part of the connecting cylindrical portion 61a is provided with a top portion 61b that extends horizontally, and the top portion 61b is provided with a cylindrical nozzle 61c that extends radially outward and leads to the stem 57a. The tip of the nozzle 61c is provided with a discharge port 61d through which the liquid contents are discharged by the discharger 200. Furthermore, the nozzle head 61 has a cylindrical outer peripheral wall 61e that is smaller in diameter than the upper peripheral wall 60d and extends downward. As shown in Figure 1, when the nozzle head 61 is moved to its upper limit, the lower end (tip) of the outer peripheral wall 61e is located below the upper end (tip) of the upper peripheral wall 60d, and the upper peripheral wall 60d and the outer peripheral wall 61e can cover the area around the connecting cylindrical portion 61a. The lower end of the outer peripheral wall 61e is provided with a small protrusion 61f that projects radially outward and fits inside the standby position small groove 60e and the operating position small groove 60g, and a large protrusion 61g that projects radially outward and fits inside the standby position large groove 60f and the operating position large groove 60h. The lower surface of the top portion 61b is provided with a support rib 61h that is reduced in diameter so as to curve at its tip, into which the first base portion 1 of the compression spring 100 is inserted and which supports the compression spring 100 from above.

[0048] As shown in Figure 5, when the nozzle head 61 is at its upper limit, the compression spring 100 attached to the discharger 200 is slightly compressed as shown in Figure 7, with the second A free end 11b and the second B free end 12a in contact with the second base 2. The fourth A free end 14b and the fourth B free end 15a are in contact with the fourth base 4, the sixth A free end 17b and the sixth B free end 18a are in contact with the sixth base 6, and the eighth A free end 20b and the eighth B free end 21a are in contact with the eighth base 8. The third A free end 23b and the third B free end 24a are in contact with the third base 3, the fifth A free end 26b and the fifth B free end 27a are in contact with the fifth base 5, and the seventh A free end 29b and the seventh B free end 30a are in contact with the seventh base 7. In other words, when the compression spring 100 is attached to the discharger 200, the second free end 11b, etc., comes into contact with the second base 2, which prevents the compression spring 100 from wobbling.

[0049] Furthermore, when the nozzle head 61 is rotated clockwise from the state shown in Figure 6, the aforementioned small protrusion 61f moves to the position of the standby position small groove 60e, and the large protrusion 61g moves to the position of the standby position large groove 60f, and the small protrusion 61f and the large protrusion 61g are supported from below by the stepped portion 60j. In other words, even if the nozzle head 61 is pressed in this state, the downward movement of the nozzle head 61 is prevented, so the liquid contents will not be unintentionally discharged.

[0050] Then, when the nozzle head 61 is rotated counterclockwise from the state described above, the small protrusion 61f moves to the position of the operating position small groove 60g, and the large protrusion 61g moves to the position of the operating position large groove 60h, so that the nozzle head 61 becomes pushable down. Subsequently, when the nozzle head 61 is pressed down from above, the stem 57a is pushed down together with the nozzle head 61. As the stem 57a is pushed down, the bottom portion 55b also descends via the connecting cylinder 55a, so that the liquid-tight contact between the annular portion 55d and the lower part of the inner sliding piece 56c is released. When the nozzle head 61 is pushed down further, the piston 56 descends together with the cylindrical member 57 and the internal member 55, and the inside of the cylinder 51 is pressurized. Therefore, the liquid contents inside the cylinder 51 pass through the communication port 55c, the connecting cylinder 55a, the stem 57a, the connecting cylinder portion 61a, and the inside of the nozzle 61c, and are discharged to the outside from the discharge port 61d. When the nozzle head 61 is pressed and the piston 56 is lowered below the vent port 51f, a container (not shown) communicates with the outside through the vent port 51f. As a result, even if the liquid contents inside the container decrease, the inside of the container does not become negatively pressurized, preventing the container from deforming and collapsing.

[0051] Furthermore, when the nozzle head 61 is pushed down and the compression spring 100 is compressed, the second A free end 11b etc. slidably contacts the second base 2 etc., thereby preventing stress concentration on the second A free end 11b etc., making it less likely to wear down. Also, when the compression spring 100 is compressed, the second A free end 11b etc. contacts the second base 2 etc., and the first B fixed / second A free elastic part 11 etc. undergoes elastic deformation, thus ensuring the necessary elastic force.

[0052] Subsequently, when the pressure on the nozzle head 61 is released, the elastic force of the elastically deformed compression spring 100 acts on the nozzle head 61, causing it to begin rising. As a result, the annular portion 55d and the lower part of the inner sliding piece 56c come into liquid-tight contact again, and the piston 56 rises together with the internal member 55, causing the inside of the cylinder 51 to be depressurized. This causes the valve body 52b to separate from the bottom wall 51a, opening the suction port 51d, and allowing the liquid contents of the container to be drawn into the cylinder 51 through the pipe 54. Subsequently, when the nozzle head 61 is pressed again, the liquid contents are discharged again from the discharge port 61d.

[0053] Although one embodiment of the present invention has been described above with reference to the drawings, this embodiment may be modified as follows. For example, the discharger described above is just one example, and the present invention also includes the use of other types of dischargers.

[0054] Furthermore, the number of first base parts 1 and other components provided on the compression spring 100, as well as the number of first B fixed / second A free elastic parts 11 and other components, can be changed as appropriate. For example, the base parts may consist of two parts, a first base part 1 and a second base part 2, and the elastic parts may consist only of upper side fixed elastic parts 10 and a first B fixed / second A free elastic part 11, with both ends of the upper side fixed elastic parts 10 integrally connected to the first base part 1 and the second base part 2, and one end of the first B fixed / second A free elastic part 11 integrally connected to either the first base part 1 or the second base part 2, while the other end is not connected to the other of the first base part 1 or the second base part 2.

[0055] Furthermore, when changing the number of first bases 1, etc., or the number of first B fixed / second A free elastic parts 11, etc., it is preferable that the lower fixed elastic parts 32 on both sides described above be provided between the base furthest from the first base 1 and the base located closer to the first base 1 than this base. In other words, it is preferable that this point be specified by a general formula, satisfying the following conditions.

[0056] If F is an integer greater than or equal to 3, A second base (F) is located on the opposite side from the first base and contacts the object to which elastic force is applied, A (F-1) base is provided on the same side as the first base with respect to the F base, and is spaced apart from it. It comprises elastically deformable and other fixed elastic parts on both sides, having an F end integrally connected to the F base and an (F-1) end integrally connected to the (F-1) base.

[0057] While the double-sided fixed elastic parts, such as the upper double-sided fixed elastic part 10, are more prone to stress concentration at the base compared to the cantilevered elastic parts, such as the first B fixed / second A free elastic part 11, double-sided fixed elastic parts may be added as appropriate if, for example, preventing misalignment between adjacent bases is a priority.

[0058] Furthermore, the number of bases in the compression spring 100 is not limited to an odd number as in this embodiment. For example, if F is 8, the one that satisfies the above general formula is the one shown in Figure 2 which has an 8th base 8 and a 7th base 7. In this case, the 7B fixed / 8A free elastic part 20, the 7B fixed end 20a, the 8A free end 20b, the 8B free / 9A fixed elastic part 21, the 8B free end 21a, the 9A fixed end 21b, and the 8A / 8B connecting part 22 shown in Figure 2 can be omitted, and a fixed elastic part on both sides can be provided below the 6B free / 7A fixed elastic part 18, having an 8th end integrally connected to the 8th base 8 and a 7th end integrally connected to the 7th base 7.

[0059] (Note) This specification discloses the following technologies in one aspect. The reference numerals listed below correspond to those used in the accompanying drawings, but are provided as examples only and are not intended to limit the inventions of this application.

[0060] (Technology 1) A compression spring (100) made of synthetic resin, A first base (1) that contacts the object to which elastic force is applied, A second base (2) is provided at a distance from the first base (1), A double-sided fixed elastic portion (10) having an elastically deformable first end (10a) integrally connected to the first base (1) and a second end (10b) integrally connected to the second base (2), The structure comprises an elastically deformable cantilever elastic portion (11) whose one end is integrally connected to either the first base portion (1) or the second base portion (2), and whose other end is not connected to the other of the first base portion (1) or the second base portion (2), When the second base (2) is compressed in a direction that brings it relatively closer to the first base (1), the cantilever elastic portion (11) elastically deforms while its other end is in slidable contact with either the first base (1) or the second base (2), forming a compression spring (100).

[0061] This technology prevents stress concentration at the other end of the cantilevered elastic section, thus reducing sagging. Furthermore, when the compression spring is compressed, the other end contacts either the first or second base, causing the cantilevered elastic section to elastically deform, thus ensuring the necessary elastic force for the compression spring. Additionally, the presence of fixed elastic sections on both sides prevents excessive misalignment between the first and second bases.

[0062] (Technology 2) A compression spring (100) made of synthetic resin, A first base (1) that contacts the object to which elastic force is applied, A second base (2) is provided at a distance from the first base (1), A third base (3) is provided on the opposite side from the first base (1) to the second base (2), and A double-sided fixed elastic portion (10) having an elastically deformable first end (10a) integrally connected to the first base (1) and a second end (10b) integrally connected to the second base (2), A first B fixed / second A free elastic part (11) having an elastically deformable first B fixed end (11a) integrally connected to the first base (1) and a second A free end (11b) that is not connected to the second base (2), A second B free-third A fixed elastic part (12) having an elastically deformable third A fixed end (12b) integrally connected to the third base (3) and a second B free end (12a) not connected to the second base (2), The second base (2) includes a second A-second B connecting portion (13) that integrally connects the second A free end (11b) and the second B free end (12a) on the outside of the second base (2), A compression spring (100) in which, when the third base (3) is compressed in a direction that brings it relatively closer to the first base (1), the first B fixed / second A free elastic portion (11) undergoes elastic deformation with the second A free end (11b) slidingly in contact with the second base (2), and the second B free / third A fixed elastic portion (12) undergoes elastic deformation with the second B free end (12a) slidingly in contact with the second base (2).

[0063] Similar to Technology 1, this technology also prevents stress concentration at the free end of 2A in the cantilevered elastic section (1B fixed / 2A free elastic section) and at the free end of 2B in the 2B free / 3A fixed elastic section. Furthermore, when the compression spring is compressed, the free ends of 2A and 2B come into contact with the second base, causing the 1B fixed / 2A free elastic section and the 2B free / 3A fixed elastic section to undergo elastic deformation, thus ensuring the necessary elastic force for the compression spring. Moreover, since the cantilevered elastic section (1B fixed / 2A free elastic section) and the 2B free / 3A fixed elastic section are integrally connected via the 2A / 2B connecting section, deformation of the 1B fixed / 2A free elastic section and the 2B free / 3A fixed elastic section is prevented.

[0064] (Technology 3) A fourth base (4) is provided with a gap between it and the third base (3) on the opposite side from the second base (2), A second B fixed / third A free elastic portion (23) having a second B fixed end (23a) that is elastically deformable and integrally connected to the second base (2), and a third A free end (23b) that is not connected to the third base (3), A third B free-fourth A fixed elastic portion (24) having an elastically deformable fourth A fixed end (24b) integrally connected to the fourth base (4) and a third B free end (24a) not connected to the third base (3), The third base (3) is further comprising a third A-third B connecting portion (25) that integrally connects the third A free end (23b) and the third B free end (24a) on the outside of the third base (3), The compression spring (100) according to Technical 2, wherein when the fourth base (4) is compressed in a direction that brings it relatively closer to the first base (1), the second B fixed / third A free elastic portion (23) undergoes elastic deformation with the third A free end (23b) slidably in contact with the third base (3), and the third B free / fourth A fixed elastic portion (24) undergoes elastic deformation with the third B free end (24a) slidably in contact with the third base (3).

[0065] This technology increases the number of cantilevered elastic sections, specifically the 2B fixed / 3A free elastic section and the 3B free / 4A fixed elastic section, thereby increasing the elastic force. It also prevents stress concentration at the 3A free end and the 3B free end.

[0066] (Technology 4) If N is an integer greater than or equal to 1, A (2×N+1) base is provided on the opposite side of the (2×N-1) base, with a gap between them, A (2×N+2) base is provided on the opposite side of the (2×N) base, with a gap between them, A (2×N+3) base is provided at a distance from the (2×N+1) base on the opposite side of the (2×N+2) base, A (2×N+1)B fixed-(2×N+2)A free elastic part having an elastically deformable (2×N+1)B fixed end integrally connected to the (2×N+1) base and a (2×N+2)A free end that is not connected to the (2×N+2) base, An elastic part having an elastically deformable (2×N+3)A fixed end that is integrally connected to the (2×N+3) base and a (2×N+2)B free end that is not connected to the (2×N+2) base, The (2×N+2) base comprises a (2×N+2)A-(2×N+2)B connecting portion which integrally connects the (2×N+2)A free end and the (2×N+2)B free end outside the (2×N+2) base, The compression spring (100) according to Technical 3, wherein when the (2×N+3) base is compressed in a direction that brings it relatively closer to the first base, the (2×N+1)B fixed / (2×N+2)A free elastic portion undergoes elastic deformation with the (2×N+2)A free end slidably in contact with the (2×N+2) base, and the (2×N+2)B free / (2×N+3)A fixed elastic portion undergoes elastic deformation with the (2×N+2)B free end slidably in contact with the (2×N+2) base.

[0067] This technology allows for an increase in the number of cantilevered elastic sections, thereby further enhancing the elastic force. It also prevents the stress concentration at the free end mentioned above.

[0068] (Technology 5) If M is an integer greater than or equal to 1, A (2×M+2) base is provided on the opposite side of the (2×M) base, with a gap between them, The (2×M+3) base is provided at a distance from the (2×M+1) base on the opposite side of the (2×M+2) base, The (2×M+4) base is provided at a distance from the (2×M+2) base on the opposite side of the (2×M+3) base, A (2×M+2)B fixed-(2×M+3)A free elastic part having an elastically deformable (2×M+2)B fixed end integrally connected to the (2×M+2) base and a (2×M+3)A free end that is not connected to the (2×M+3) base, An elastic part having an elastically deformable (2×M+3)B free and (2×M+4)A fixed end that is integrally connected to the (2×M+4) base and a (2×M+3)B free end that is not connected to the (2×M+3) base, The (2×M+3) base comprises a (2×M+3)A-(2×M+3)B connecting portion which integrally connects the (2×M+3)A free end and the (2×M+3)B free end on the outside of the (2×M+3) base, The compression spring (100) according to Technical 4, wherein when the (2×M+4) base is compressed in a direction that brings it relatively closer to the first base, the (2×M+2)B fixed / (2×M+3)A free elastic portion undergoes elastic deformation with the (2×M+3)A free end slidably in contact with the (2×M+3) base, and the (2×M+3)B free / (2×M+4)A fixed elastic portion undergoes elastic deformation with the (2×M+3)B free end slidably in contact with the (2×M+3) base.

[0069] This technology allows for an increase in the number of cantilevered elastic sections, thereby further enhancing the elastic force. It also prevents the stress concentration at the free end mentioned above.

[0070] (Technology 6) If F is an integer greater than or equal to 3, A second base (F) is located on the opposite side from the first base and contacts the object to which elastic force is applied, A (F-1) base is provided on the same side as the first base with respect to the F base, and is spaced apart from it. A compression spring (100) according to any one of Art 2 to 5, comprising elastically deformable and having an F end integrally connected to the F base and another fixed elastic part on both sides having an (F-1) end integrally connected to the (F-1) base.

[0071] This technology makes it possible to prevent excessive misalignment between the F-th base and the (F-1)-th base.

[0072] (Technology 7) With respect to the axis (O) extending from the first base (1) to the second base (2), The two fixed elastic portions (10), the first B fixed / second A free elastic portion (11), and the second B free / third A fixed elastic portion (12) extend at an inclination with respect to the axis (O), The compression spring (100) described in any one of the Art 2 to 4, wherein the 1B fixed / 2A free elastic portion (11) is inclined to the same side with respect to the two fixed elastic portions, and the 2B free / 3A fixed elastic portion (12) extends inclined to the opposite side with respect to the two fixed elastic portions.

[0073] This technology allows for a reduction in the circumferential distance between the 1B fixed / 2A free elastic section and the fixed elastic sections on both sides, thereby enabling miniaturization of the compression spring. Furthermore, if the 1B fixed / 2A free elastic section and the 2B free / 3A fixed elastic section are tilted to the same side, the circumferential length of these elastic sections increases. However, if the 2B free / 3A fixed elastic section is tilted to the opposite side relative to the 1B fixed / 2A free elastic section, the circumferential length of these elastic sections decreases, allowing for further miniaturization of the compression spring.

[0074] (Technology 8) The compression spring (100) according to Technical 1, wherein the first end portion (10a) has a first end curved portion (10c) that curves toward the second base portion (2).

[0075] This technology increases the length of the fixed elastic sections on both sides, allowing them to flex more gradually and thus suppressing sagging.

[0076] (Technology 9) The compression spring (100) according to Technical Reference 6, wherein the F end has an F end curved portion that curves toward the (F-1) base.

[0077] This technology increases the length of the other fixed elastic parts on both sides, allowing them to flex more gradually and thus suppressing deformation.

[0078] (Technology 10) A dispensing device (200) attached to a container that holds liquid contents, A dispensing device (200) having a compression spring (100) as described in Technology 1 or 2, and an operating part that dispenses the liquid contents from the container by compressing the compression spring (100) and returns to its original position due to the elastic force of the compressed compression spring (100).

[0079] This technology reduces the likelihood of compression spring fatigue, allowing the operating mechanism to return to its original position more reliably even after repeated use of the discharger.

[0080] Although one embodiment of the present invention has been described above, the present invention is not limited to such specific embodiments, and unless otherwise specifically limited in the above description, various modifications and changes are possible within the scope of the spirit of the present invention as described in the claims. For example, the configuration of the above-described embodiment can be added or deleted as appropriate, and the configuration of one embodiment can be provided in other embodiments. Furthermore, the effects in the above-described embodiment are merely illustrative of the effects that may result from the present invention. In other words, the effects of the present invention are not limited to the above-described effects, and additional effects may also be produced in addition to the above-described effects. [Explanation of Symbols]

[0081] 1: 1st base 2:Second base 3:Third base 4:Fourth base 5:Fifth base 6: 6th base 7: 7th base 8:8th base 9:9th base 10: Upper side fixed elastic section (side fixed elastic section) 10a: First end 10b: Second end 10c: First end curved section 11: 1B fixed / 2A free elastic section (cantilever elastic section) 11a: 1st B fixed end 11b: 2nd A free end 12: 2B free·3A fixed elastic part 12a: Free end of the 2B section 12b: Fixed end of the 3A section 13: Connecting parts 2A and 2B 14: Fixed Section 3B, Free-flowing Section 4A 14a: Fixed end of the 3B section 14b: Free end of the 4A section 15: 4B free·5A fixed elastic part 15a: Free end of the 4th B section 15b: Fixed end of 5A 16: Connecting parts 4A and 4B 17: No. 5B fixed·No. 6A free elastic part 17a: Fixed end of 5B 17b: Free end of the 6A section 18: 6B free·7A fixed elastic part 18a: Free end of the 6th B section 18b: Fixed end of 7A 19: Connecting parts 6A and 6B 20: No. 7B fixed·No. 8A free elastic part 20a: Fixed end of the 7B section 20b: Free end of the 8A section 21: 8B free·9A fixed elastic part 21a: Free end of the 8B section 21b: Fixed end of 9A 22: Connecting parts 8A and 8B 23: 2B fixed·3A free elastic part 23a: Fixed end of 2B 23b: The 3A free end 24: Section 3B Freedom, Section 4A Fixed Elasticity 24a: The 3B free end 24b: Fixed end of the 4A section 25: Connecting parts 3A and 3B 26: 4B fixed·5A free elastic part 26a: Fixed end of the 4B section 26b: Free end of the 5A section 27: 5B free·6A fixed elastic part 27a: Free end of the 5B section 27b: Fixed end of 6A 28: Connecting sections 5A and 5B 29: Section 6B fixed, Section 7A free elastic section 29a: No. 6B fixed end 29b: 7th A free end 30: 7B Free and 8A Fixed Elastic Sections 30a: No. 7B free end 30b: No. 8A fixed end 31: 7A / 7B connection part 32: Lower bilateral fixed elastic parts (other bilateral fixed elastic parts) 32a: 8th end 32b: 9th end 32c: Ninth end curved section 51: Cylinder 51a: Bottom wall part 51b: Cylinder wall part 51c: Flange wall 51d: Inlet 51e: Holding tube 51f: Ventilation opening 52: Valve component 52a: base 52b: Valve body 52c: Connecting piece 54: Pipe 55: Internal components 55a: Connecting tube 55b: Bottom 55c: Communication port 55d: Annular section 56: Piston 56a: Base 56b:Outer sliding piece 56c: Inner sliding piece 57: Cylindrical member 57a: Stem 57b: Expanded diameter part 58: Holder 58a: Holder outer cylinder 58b: Inner cylinder of the holder 58c: Flange 59: Packing 60: Cap 60a: Top wall 60b: Lower peripheral wall 60c: Female thread section 60d: Upper peripheral wall 60e: Standby position small groove 60f: Standby position large groove 60g: Operation position small groove 60h: Operation position large groove 60j: Step section 61: Nozzle head 61a: Connecting cylinder part 61b:Top 61c: Nozzle 61d: Discharge port 61e:Outer wall 61f: Small protrusion 61g: Large protrusion 61h: Support rib 100: Compression spring 200: Dispenser O: Axis line

Claims

1. A compression spring made of synthetic resin, A first base that contacts the object to which elastic force is applied, A second base provided at a distance from the first base, Elastically deformable, having a first end integrally connected to the first base and a second end integrally connected to the second base, It comprises an elastically deformable cantilever elastic portion, one end of which is integrally connected to either the first base or the second base, and the other end of which is not connected to the other of the first base or the second base, When the second base is compressed in a direction that brings it relatively closer to the first base, the cantilevered elastic portion elastically deforms while its other end slidably contacts the other of either the first base or the second base, thus forming a compression spring.

2. A compression spring made of synthetic resin, A first base that contacts the object to which elastic force is applied, A second base provided at a distance from the first base, A third base is provided with a gap between it and the second base, on the opposite side from the first base, Elastically deformable, having a first end integrally connected to the first base and a second end integrally connected to the second base, A first B fixed / second A free elastic portion having a first B fixed end that is elastically deformable and integrally connected to the first base, and a second A free end that is not connected to the second base, A second B free / third A fixed elastic portion having a third A fixed end that is elastically deformable and integrally connected to the third base, and a second B free end that is not connected to the second base, The second base comprises a second A-2B connecting portion that integrally connects the second A free end and the second B free end on the outside of the second base, A compression spring in which, when the third base is compressed in a direction that brings it relatively closer to the first base, the first B fixed / second A free elastic portion undergoes elastic deformation with the second A free end slidably in contact with the second base, and the second B free / third A fixed elastic portion undergoes elastic deformation with the second B free end slidably in contact with the second base.

3. A fourth base is provided with a gap between it and the third base, on the opposite side from the second base, A second B fixed end and third A free elastic part having an elastically deformable second B fixed end integrally connected to the second base and a third A free end that is not connected to the third base, A third B free and fourth A fixed elastic portion having a fourth A fixed end that is elastically deformable and integrally connected to the fourth base, and a third B free end that is not connected to the third base, The third base comprises a third A-third B connecting portion that integrally connects the third A free end and the third B free end on the outside of the third base, The compression spring according to claim 2, wherein when the fourth base is compressed in a direction that brings it relatively closer to the first base, the second B fixed / third A free elastic portion undergoes elastic deformation with the third A free end slidably in contact with the third base, and the third B free / fourth A fixed elastic portion undergoes elastic deformation with the third B free end slidably in contact with the third base.

4. If N is an integer greater than or equal to 1, A (2×N+1) base is provided at a distance from the (2×N-1) base on the opposite side of the (2×N) base, A (2×N+2) base is provided at a distance from the (2×N) base on the opposite side of the (2×N) base, A (2×N+3) base is provided at a distance from the (2×N+1) base on the opposite side of the (2×N+2) base, A (2×N+1)B fixed and (2×N+2)A free elastic part having an elastically deformable (2×N+1)B fixed end integrally connected to the (2×N+1) base and a (2×N+2)A free end that is not connected to the (2×N+2) base, An elastic part having an elastically deformable (2×N+3)A fixed end that is integrally connected to the (2×N+3) base and a (2×N+2)B free end that is not connected to the (2×N+2) base, The (2×N+2) base comprises a (2×N+2)A-(2×N+2)B connecting portion that integrally connects the (2×N+2)A free end and the (2×N+2)B free end on the outside of the (2×N+2) base, The compression spring according to claim 3, wherein when the (2×N+3) base is compressed in a direction that brings it relatively closer to the first base, the (2×N+1)B fixed / (2×N+2)A free elastic portion undergoes elastic deformation with the (2×N+2)A free end slidably in contact with the (2×N+2) base, and the (2×N+2)B free / (2×N+3)A fixed elastic portion undergoes elastic deformation with the (2×N+2)B free end slidably in contact with the (2×N+2) base.

5. If M is an integer greater than or equal to 1, A (2×M+2) base is provided at a distance from the (2×M) base on the opposite side of the (2×M) base, A (2×M+3) base is provided at a distance from the (2×M+1) base on the opposite side of the (2×M+2) base, A (2×M+4) base is provided at a distance from the (2×M+2) base on the opposite side of the (2×M+3) base, A (2×M+2)B fixed and (2×M+3)A free elastic part having an elastically deformable (2×M+2)B fixed end integrally connected to the (2×M+2) base and a (2×M+3)A free end that is not connected to the (2×M+3) base, An elastic part having an elastically deformable (2×M+4)A fixed end that is integrally connected to the (2×M+4) base and a (2×M+3)B free end that is not connected to the (2×M+3) base, The (2×M+3) base comprises a (2×M+3)A-(2×M+3)B connecting portion that integrally connects the (2×M+3)A free end and the (2×M+3)B free end on the outside of the (2×M+3) base, The compression spring according to claim 4, wherein when the (2×M+4) base is compressed in a direction that brings it relatively closer to the first base, the (2×M+2)B fixed / (2×M+3)A free elastic portion undergoes elastic deformation with the (2×M+3)A free end slidably in contact with the (2×M+3) base, and the (2×M+3)B free / (2×M+4)A fixed elastic portion undergoes elastic deformation with the (2×M+3)B free end slidably in contact with the (2×M+3) base.

6. If F is an integer greater than or equal to 3, A second base portion F is located on the opposite side from the first base portion and contacts the object to which elastic force is applied, A (F-1) base portion is provided on the same side as the first base portion with respect to the F base portion, A compression spring according to any one of claims 2 to 5, comprising: an elastically deformable F end integrally connected to the F base; and another fixed elastic portion on both sides having an (F-1) end integrally connected to the (F-1) base.

7. With respect to the axis extending from the first base to the second base, The two fixed elastic portions, the first B fixed / second A free elastic portion, and the second B free / third A fixed elastic portion extend inclined with respect to the axis, The compression spring according to any one of claims 2 to 4, wherein the first B fixed and second A free elastic portion is inclined to the same side with respect to the two fixed elastic portions, and the second B free and third A fixed elastic portion extends inclined to the opposite side with respect to the two fixed elastic portions.

8. The compression spring according to claim 1, wherein the first end has a first end curved portion that curves toward the second base.

9. The compression spring according to claim 6, wherein the F end has an F end curved portion that curves toward the (F-1) base.

10. A dispensing device attached to a container that holds liquid contents, A dispensing device comprising a compression spring as described in claim 1 or 2, and an operating part that dispenses liquid contents from the container by compressing the compression spring, and returns to its original position due to the elastic force of the compressed compression spring.

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