TWI747542B - Multi-wire spring and multi-wire spring valve body - Google Patents

Abstract

A multi-wire spring includes an upper ring body, a lower ring body and a plurality of spiral coils; the spiral coils have two connecting ends, one of the two connecting ends of each spiral coil is connected to the upper ring body, and the two The other one of the connecting ends is connected to the lower ring body; each of the spiral coils has a plurality of winding turns, and the winding turns of each spiral coil and the winding turns of the other spiral coil are mutually connected Staggered. A multi-wire spring valve body is also provided here. With these helical coils, the multi-wire spring can have a relatively short compression length when compressed, and during extension and compression, the multi-wire spring can maintain expansion and contraction along the long axis without lateral deviation.

Description

Multi-wire spring and multi-wire spring valve body

The present invention is related to springs; in particular, it refers to a multi-wire spring and a multi-wire spring valve body.

It is known that traditional springs made of perfluoroalkoxy alkane (PFA) are in the form of a single helical coil. Although compressed by external force, they can have the shortest compression length, but due to the limitation of a single helical coil, the traditional PFA spring cannot Stably expand and contract along the long axis, and easily shift to the side.

Accordingly, there is an urgent need for a novel fluorine-containing spring and spring valve body to improve the existing problems of the above-mentioned traditional PFA spring.

In view of this, the object of the present invention is to provide a multi-wire spring and a multi-wire spring valve body, which include a plurality of spiral coils, each of the spiral coils has a plurality of winding turns, and the winding turns of each of the spiral coils The winding coils of the helical coil are arranged alternately with each other, so they can stably expand and contract along the long axis, and are not easy to deviate laterally; meanwhile, the multi-wire spring and the multi-wire spring valve body provided by the present invention have Optimal telescopic length.

In order to achieve the above object, the present invention provides a multi-wire spring, including an upper ring body, a lower ring body and a plurality of spiral coils; the spiral coils have two connecting ends, one of the two connecting ends of each spiral coil One is connected to the upper ring body, and the other of the two connecting ends is connected to the lower ring body; each of the spiral coils has a plurality of winding turns, and the winding turns of each spiral coil are connected to the other The winding turns of a spiral coil are arranged alternately with each other.

Another object of the present invention is to provide a multi-wire spring valve body, including an upper ring body, a lower ring body, a plurality of spiral coils and a valve head; the spiral coils have two connecting ends, and the two of the spiral coils One of the connecting ends is connected to the upper ring body, and the other of the two connecting ends is connected to the lower ring body; each of the spiral coils has a plurality of winding turns, and each of the spiral coils The winding coils and the winding coils of the other spiral coil are arranged alternately; the valve head is connected to the upper ring body, and the valve head is used to detachably fill a valve hole correspondingly.

The effect of the present invention is that by the helical coils of the helical coils, the multi-wire spring can have a relatively short compression length when compressed, and the multi-wire spring can be maintained along the long axis during extension and compression. It stretches and does not shift sideways.

In order to explain the present invention more clearly, a detailed description is given below with reference to preferred embodiments in conjunction with the drawings. Please refer to Figures 1 to 5. Figure 1 is a perspective view of a multi-wire spring valve body 20 according to a preferred embodiment of the present invention; Figure 2 is a top view of Figure 1; Figure 3 is a cross-sectional view of Figure 2 in the direction of 3-3; Fig. 4 is a side view of Fig. 1; Fig. 5 is a cross-sectional view of Fig. 4 in the direction of 5-5.

In Figure 1, the multi-wire spring valve body 20 includes a valve head 22 and a multi-wire spring 10, wherein the valve head 22 is connected to the multi-wire spring 10; and the valve head 22 includes a plurality of flow holes 24 for To allow fluid to pass through.

In FIGS. 2 and 4, the multi-wire spring 10 includes an upper ring body 11, a lower ring body 15 and a plurality of spiral coils. Each spiral coil has two connecting ends, one of the two connecting ends of each spiral coil is connected to the upper ring body 11, and the other of the two connecting ends is connected to the lower ring body 15. In the embodiment of the present invention, the multi-wire spring 10 is composed of a fluorine-containing polymer. The fluorine-containing polymer may be, for example, polytetrafluoroethylene (PTFE), but it is not limited thereto. In the embodiment of the present invention, the multi-wire spring valve body 20 may be made of a fluoropolymer in an integral molding manner. The fluoropolymer may be, for example, polytetrafluoroethylene (PTFE), but it is not limited thereto. .

In FIG. 3, each of the spiral coils has a plurality of winding turns, and the winding turns of the spiral coil and the winding turns of another spiral coil are arranged alternately with each other. In the embodiment of the present invention, the helical coils include a first helical coil 12 and a second helical coil 14. The first helical coil 12 is connected to the lower ring body 15 from a connection end connected to the upper ring body 11 The other connecting end includes a first winding ring 12a and a second winding ring 12b in sequence. The second spiral coil 14 includes a third winding ring 14a and a fourth winding ring 14b in sequence from the connection end connected to the upper ring body 11 to the other connection end connected to the lower ring body 15. The first winding ring 12a, the third winding ring 14a, the second winding ring 12b, and the fourth winding ring 14b are arranged in sequence from the upper ring body 11 to the lower ring body 15.

As shown in Fig. 3, before the multi-wire spring 10 is not compressed, the thickness of each coil is W1, and the shortest distance between the adjacent coils is W2, where the thickness W1 is between 1.7~2.5 mm, and the distance W2 is between 2.5~3.5 mm. The ratio of thickness W1 to distance W2 (W1/W2) is between 0.5 and 1. Thereby, the multi-wire spring 10 can have a better expansion and contraction length, so as to maintain the elasticity requirement and maintain a sufficient amount of compression, so that the valve of the check valve (not shown) containing the multi-wire spring valve body 20 can be opened. The degree and flow rate can be maintained at the best condition.

其中，d為各彈簧線徑；D為各彈簧直徑；Na為各彈簧的有效總圈數；G為各彈簧的材料係數。 It is worth mentioning that, as shown in FIGS. 2 and 4, the multi-wire spring 10 includes an upper ring body 11, a lower ring body 15 and a plurality of spiral coils 12 and 14. Taking the spiral coil 12 as an example, the spiral coil 12 has two connecting ends 121 and 124 respectively connected to the upper ring body 11 and the lower ring body 15. In the embodiment of the present invention, the elastic coefficient (k) of the multi-wire spring 10 conforms to the following formula:

Among them, d is the wire diameter of each spring; D is the diameter of each spring; Na is the effective total number of turns of each spring; G is the material coefficient of each spring.

For example, if the wire diameter (d) of a single-wire spring is 2 mm, the diameter (D) is 20 mm, the effective total number of turns (Na) is 6 and the material coefficient (G) is 5000, then the single-wire spring The coefficient of elasticity (k) can be obtained as 0.208 according to the formula. However, if the multi-wire spring 10 is designed according to the embodiment of the present invention, the wire diameter (d) of each spiral coil 12, 14 in the multi-wire spring 10 is preset to 2 mm, and the diameter (D) is preset to 20 mm, which is effective The total number of turns (Na) is preset to 3 turns (the two helical coils 12, 14 are 6 turns in total), and the material coefficient (G) is 5000, so for each helical coil 12, 14, each helical coil 12, 14 The elastic coefficient (k) of the multi-wire spring 10 is 0.417; however, if the multi-wire spring 10 is concerned, the elastic coefficient (k) of the multi-wire spring 10 is the sum of the elastic coefficients (k) of the spiral coils 12 and 14, that is, the multi-wire spring 10 The coefficient of elasticity (k) is about 0.834, which is twice that of a single spiral coil 12 and 14. Therefore, under the same compression height, the elastic coefficient (k) of the double-wire spring and the single-wire spring will differ by 3 to 4 times, and there will be at least a two-fold difference in the coefficient of elasticity (k). In addition to the above-mentioned difference in elasticity coefficient (k), the multi-wire spring 10 provided by the embodiment of the present invention is connected between the upper ring body and the lower ring body with a plurality of spiral coils whose connecting ends are balanced with each other, so it is used as a multi-wire spring When the expansion and contraction is controlled, compared with a single-wire spring, the multi-wire spring 10 provided by the embodiment of the present invention has better compression stability.

4 and 5, the two connecting ends of the first spiral coil 12 include a first connecting end 121 and a second connecting end 124, the first connecting end 121 is connected to the upper ring body 11, and The second connecting end 124 is connected to the lower ring body 15. The two connecting ends of the second spiral coil 14 include a third connecting end 141 and a fourth connecting end 144. The third connecting end 141 is connected to the upper ring body 11, and the fourth connecting end 144 is connected to The lower ring body 15.

In the embodiment of the present invention, the first connecting end 121 and the third connecting end 141 are symmetrical with respect to the center point of the upper ring body 11, and the second connecting end 124 and the fourth connecting end 144 are symmetrical with respect to the lower ring. The center points of the bodies 15 are symmetrical to each other.

As shown in FIG. 5, the first connection end 121 and the third connection end 141 are respectively a first projection position 122 and a third projection position 142 on the lower ring body 15, the first projection position 122 and the The third projection position 142 does not overlap 144 with the second connecting end 124 and the fourth connecting end. In detail, the first projection position 122 does not overlap 144 with the second connection end 124 and the fourth connection end, and the third projection position 142 does not overlap the second connection end 124 and the fourth connection end 144 .

In the embodiment of the present invention, the first projection position 122 defines a first line L1 through the center point of the lower ring 15 and the third projection position 142, and the second connecting end 124 passes through the lower ring 15 The center point and the fourth connecting end 144 define a second line L2, and the first line L1 and the second line L2 are perpendicular to each other.

In another embodiment of the present invention, the helical coils include a first helical coil, a second helical coil, and a third helical coil, wherein the first helical coil includes a first connecting end and a second connecting end, and the first connecting end is Connected to the upper ring body, and the second connecting end is connected to the lower ring body; the second spiral coil includes a third connecting end and a fourth connecting end, the third connecting end is connected to the upper ring body, and the fourth connecting end is connected In the lower ring body; the third spiral coil includes a fifth connection end and a sixth connection end, the fifth connection end is connected to the upper ring body, and the sixth connection end is connected to the lower ring body. In practice, the spiral coils may include more than three spiral coils.

In this embodiment, the first connection end, the third connection end and the fifth connection end divide the circumference of the upper ring body into three equal parts. The second connection end, the fourth connection end and the sixth connection end divide the upper ring body respectively. The circumference of the body is divided into three equal parts. In practice, the circumference of the upper ring body is divided into corresponding equal parts according to the number of connecting ends connected to the upper ring body. Similarly, the circumference of the lower ring body is divided into corresponding equal parts according to the number of connecting ends connected to the lower ring body. In addition, in this embodiment, the projection positions of the two connecting ends of the same spiral coil on the plane of the lower ring body are not limited to be symmetrical with respect to the center point of the lower ring body, as long as each spiral coil is connected to the upper ring body. The order of the connecting ends may be the same as the order of the connecting ends of the spiral coils connected to the lower ring body in the same direction.

2 and 4, the valve head 22 is connected to the upper ring body 11, and the valve head 22 is used to detachably plug a valve hole of the check valve (not shown). In the embodiment of the present invention, the valve head 22 has a connecting portion 221 and a free portion 222, the connecting portion 221 is connected to the upper ring body 11, and the free portion 222 is used to detachably plug the valve hole. As shown in FIG. 4, the outer diameter R1 of the connecting portion 221 is greater than the outer diameter R2 of the free portion 222. In the embodiment of the present invention, the valve head 22 is substantially in the shape of a flat top cone.

With the helical coils of the helical coils, the multi-wire spring can have a relatively short compression length when compressed, and during extension and compression, the multi-wire spring can maintain expansion and contraction along the long axis without sideways. To offset.

The above are only the preferred and feasible embodiments of the present invention. Any equivalent changes made by applying the specification of the present invention and the scope of the patent application should be included in the patent scope of the present invention.

[this invention] 10: Multi-wire spring 11: Upper ring body 12: The first spiral coil 12a: The first winding circle 12b; second winding circle 121: first connection end 122: first projection position 124: second connection end 14: The second spiral coil 14a: third winding circle 14b: Fourth winding circle 141: Third connection 142: third projection position 144: fourth connection end 15: Lower ring body 20: Multi-wire spring valve body 22: Valve head 221: connection part 222: Ministry of Freedom 24: Circulation hole L1: first connection L2: second connection R1, R2: outer diameter W1: thickness W2: distance

Fig. 1 is a perspective view of a multi-wire spring valve body according to a preferred embodiment of the present invention. Fig. 2 is a top view of Fig. 1. Fig. 3 is a cross-sectional view in the direction of 3-3 in Fig. 2; Fig. 4 is a side view of Fig. 1. Fig. 5 is a cross-sectional view of Fig. 4 in the direction of 5-5.

10: Multi-wire spring

11: Upper ring body

12: The first spiral coil

121: first connection end

124: second connection end

14: The second spiral coil

141: Third connection

144: fourth connection end

15: Lower ring body

20: Multi-wire spring valve body

22: Valve head

221: connection part

222: Ministry of Freedom

24: Circulation hole

R1, R2: outer diameter

Claims (10)

A multi-wire spring includes: an upper ring body and a lower ring body; a plurality of spiral coils having two connecting ends, one of the two connecting ends of each spiral coil is connected to the upper ring body, and the two connecting ends The other one is connected to the lower ring body; each spiral coil has a plurality of winding turns, and the winding turns of each spiral coil and the winding turns of the other spiral coil are arranged alternately with each other ; Wherein the helical coils include a first helical coil and a second helical coil, the first helical coil from the connecting end connected to the upper ring body to the other connecting end connected to the lower ring body sequentially includes a first A winding ring and a second winding ring; the second spiral coil includes a third winding ring and a first winding ring in sequence from the connection end connected to the upper ring body to the other connection end connected to the lower ring body Four winding loops; wherein the first winding loop, the third winding loop, the second winding loop and the fourth winding loop are arranged in sequence from the upper ring body to the lower ring body; wherein the first The two connecting ends of a spiral coil include a first connecting end and a second connecting end, the first connecting end is connected to the upper ring body, and the second connecting end is connected to the lower ring body; the second The two connection ends of the spiral coil include a third connection end and a fourth connection end, the third connection end is connected to the upper ring body, and the fourth connection end is connected to the lower ring body; the first connection The end and the third connecting end are symmetrical to each other with respect to the center point of the upper ring body, and the second connecting end and the fourth connecting end are symmetrical to each other with respect to the center point of the lower ring body; wherein the first connecting end and the first connecting end The three connection ends are respectively a first projection position and a third projection position on the lower ring body, and the first projection position and the third projection position do not overlap with the second connection end and the fourth connection end. The multi-wire spring according to claim 1, wherein the first projection position defines a first connection line with the third projection position through the center point of the lower ring body, and the second connection end is connected A second connection line is defined between the center point of the lower ring body and the fourth connection end, and the first connection line and the second connection line are perpendicular to each other. The multi-wire spring according to claim 1, wherein the multi-wire spring is composed of a fluoropolymer. A multi-wire spring valve body includes: an upper ring body and a lower ring body; a plurality of spiral coils having two connecting ends, one of the two connecting ends of each spiral coil is connected to the upper ring body, and the two The other one of the connecting ends is connected to the lower ring body; each of the spiral coils has a plurality of winding turns, and the winding turns of each spiral coil and the winding turns of the other spiral coil are mutually connected Staggered arrangement; a valve head, connected to the upper ring body, and the valve head is used to detachably fill in a valve hole; wherein the spiral coils include a first spiral coil and a second spiral coil, the first A spiral coil includes a first winding ring and a second winding ring in sequence from the connection end connected to the upper ring body to the other connection end connected to the lower ring body; the second spiral coil is connected to the The connection end of the upper ring body to the other connection end connected to the lower ring body includes a third winding ring and a fourth winding ring in sequence; wherein, the first winding ring, the third winding ring, The second winding ring and the fourth winding ring are arranged in sequence from the upper ring body to the lower ring body; wherein the two connecting ends of the first spiral coil include a first connecting end and a second connecting end, The first connecting end is connected to the upper ring body, and the second connecting end is connected to the lower ring body; the two connecting ends of the second spiral coil include a third connecting end and a fourth connecting end, the The third connecting end is connected to the upper ring body, and the fourth connecting end is connected to the lower ring body; the first connecting end and the third connecting end are symmetrical with respect to the center point of the upper ring body, and the second The connecting end and the fourth connecting end are symmetrical to each other with respect to the center point of the lower ring body. The multi-wire spring valve body according to claim 4, wherein the first connection end and the third connection end on the lower ring body are respectively a first projection position and a third projection position, the first projection position And the third projection position does not overlap with the second connecting end and the fourth connecting end. The multi-wire spring valve body according to claim 5, wherein the first projection position defines a first connection line through the center point of the lower ring body and the third projection position, and the second connecting end passes through the lower ring body A second connection line is defined between the center point of and the fourth connection end, and the first connection line and the second connection line are perpendicular to each other. The multi-wire spring valve body according to claim 4, wherein the multi-wire spring valve system is composed of a fluoropolymer. The multi-wire spring valve body according to claim 4, wherein the valve head has a connecting part and a free part, the connecting part is connected to the upper ring body, and the free part is used to detachably fill in the corresponding Valve hole. The multi-wire spring valve body according to claim 8, wherein the outer diameter of the connecting portion is greater than the outer diameter of the free portion. The multi-wire spring valve body according to claim 4, wherein the valve head is substantially in the shape of a flat top cone.

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