WO2018119847A1 - 螺纹螺合构造 - Google Patents

螺纹螺合构造 Download PDF

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Publication number
WO2018119847A1
WO2018119847A1 PCT/CN2016/112960 CN2016112960W WO2018119847A1 WO 2018119847 A1 WO2018119847 A1 WO 2018119847A1 CN 2016112960 W CN2016112960 W CN 2016112960W WO 2018119847 A1 WO2018119847 A1 WO 2018119847A1
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Prior art keywords
thread
threaded member
threads
external
internal
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PCT/CN2016/112960
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English (en)
French (fr)
Inventor
吴叁贵
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诠丰精密工具股份有限公司
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Priority to PCT/CN2016/112960 priority Critical patent/WO2018119847A1/zh
Publication of WO2018119847A1 publication Critical patent/WO2018119847A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
    • F16B39/30—Locking exclusively by special shape of the screw-thread

Definitions

  • the invention relates to a threaded screwing structure, in particular to a threaded screwing structure which can improve the screw tightness when a threaded screwing member is screwed to each other.
  • Commonly threaded internally threaded parts and externally threaded parts include nuts and screws, inner tube joints and outer tube joints; for example, nuts and screws, please refer to Figure 1, which is a present a nut 91 and a screw 92 having a plurality of internal threads 911 connected in a spiral shape, and an outer peripheral surface of the screw 92 has a plurality of external threads 921 connected in a spiral shape, and each of the screws 91
  • the internal thread 911 matches the thread size of each of the external threads 921.
  • the central axis S1 of the nut 91 is coaxial with the central axis S2 of the screw 92, and the plurality of external threads 921 of the screw 92 and the screw The plurality of internal threads 911 of the cap 91 are screwed together.
  • the current practice is to lock the nut 91 with the tool 91 after the existing nut 91 and the screw 92 are locked, so that the nut 91 is slightly deformed to reduce the nut 91 and The gap of the screw 92 further delays the nut 91 and the screw 92 from loosening due to vibration, but it is necessary to re-examine and improve the looseness of each of the two times, which makes it difficult to reduce maintenance for a long time.
  • the aforementioned small gap is also required, so that it is necessary to wrap such as a leak-proof tape to determine the adhesion of the two to prevent leakage, so the construction steps are relatively It is cumbersome and costly.
  • the articles such as the leak-proof tape may deteriorate due to the use time, so that the leakage prevention effect is gradually deteriorated, and regular maintenance is required, so the labor, time, and consumables required for maintenance are hard to be reduced.
  • the present invention provides a threaded screwing structure in which a threaded internal thread and an external thread can interfere with each other to increase the screw tightness, thereby causing the phase screwed internal threaded member and the externally threaded member. It can form a fixing structure that is not easy to loose and can achieve a good leak-proof effect.
  • the threaded screwing structure of the present invention comprises: an internally threaded member having an inner circumferential surface provided with a plurality of internal threads connected in a spiral shape; and an externally threaded member having an externally threaded member
  • the outer peripheral surface is provided with a plurality of external threads connected in a spiral shape, and the plurality of external threads are screwed with the plurality of internal threads; wherein each of the internal threads has the same pitch, and the pitch of each of the external threads is the same, and the inside The pitch of the thread is different from the pitch of the external thread.
  • the threaded screwing structure of the present invention can make a slight difference in the pitch specification by the internal thread of the internally threaded member and the external thread of the externally threaded member, so that the two can interfere with each other when screwing together to lift the screw. Closeness, and since the internally threaded member forms interference with the upper and lower surfaces of the externally threaded member and is tightly screwed without gaps, it is possible to prevent the internally threaded member and the externally threaded member from being prevented. The effect of non-external force loosening due to vibration.
  • the internally threaded member is a nut
  • the nut is not required to be clamped to the deformation after the nut is installed, thereby ensuring that the screw is not easily loosened;
  • the internally threaded member is an inner tube joint
  • the inner tube fitting can be installed to ensure that the leakproof effect is good without using an article such as a leakproof tape; therefore, the threaded screw structure of the present invention can improve assembly convenience and efficiency.
  • the threaded screw structure of the present invention can be kept in close contact after being screwed, it is not easy to loose or leak, so it is re-examined and The frequency of improving the loosening or leakage of both can be reduced, helping to reduce the labor and time costs required for maintenance, and solving problems that are long-standing and difficult to improve.
  • the difference between the pitch of the external thread and the internal thread is 0.05-0.5% of the larger value; the pitch difference is within the range, which ensures smooth screwing of the internally threaded member and the externally threaded member, and improves The tightness of the internal thread and the external thread.
  • the total pitch difference accumulated by the total number of internal threads of the phase screw and the external thread is not more than 20% of the larger value.
  • the small diameters of the plurality of internal threads are equal to the diameters of the plurality of external threads, and the thread height of each of the internal threads is smaller than the thread height of each of the external threads; or the large diameter of the plurality of internal threads and the plurality of external threads
  • the major diameters of the threads are equal, and the thread height of each of the internal threads is greater than the thread height of each of the external threads to further strengthen the screw tightness of the internally threaded member and the externally threaded member.
  • the thread angles of the internal threads are the same, the thread angles of the external threads are the same, and the thread angle of the internal thread is smaller than the thread angle of the external thread to further strengthen the internal threaded member and the externally threaded member. Screw tightness.
  • the structure has a lifting internal thread and an outer thread Technical effects such as the tightness of the thread.
  • Figure 1 Schematic diagram of a side cross-sectional view of a conventional nut and screw phase
  • Embodiment 1 of the present invention is a schematic plan view showing a planar exploded structure of Embodiment 1 of the present invention
  • Figure 3 is a partially enlarged schematic view showing the first embodiment of the present invention.
  • Figure 4 is a plan exploded view showing the second embodiment of the present invention when the thread height of the internal thread is smaller than the thread height of the external thread;
  • Figure 5 is a partially enlarged schematic view showing the second embodiment of the present invention.
  • Figure 6 is a schematic plan view showing a plan view of the second embodiment of the present invention when the thread height of the internal thread is greater than the thread height of the external thread;
  • FIG. 7 is a schematic plan view showing a planar decomposition structure of a third embodiment of the present invention.
  • Figure 8 is a partially enlarged schematic view showing the third embodiment of the present invention.
  • Fig. 9 is a schematic plan view showing the planar decomposition structure of the fourth embodiment of the present invention.
  • the threaded screwing structure generally includes an internally threaded member 1 and an externally threaded member 2, the internally threaded member 1 and the outer portion
  • the threaded member 2 can be any member that can be screwed to each other, such as a threaded screwing member, such as a nut and a screw, an inner tube joint and an outer tube joint; and the first embodiment of the present invention can be screwed together. Nuts and screws with parallel threads are described, but not limited to this.
  • the internally threaded member 1 has a central axis A1, and the inner peripheral surface of the internally threaded member 1 is provided with a plurality of internal threads 11 which are spirally connected about the central axis A1.
  • the inner circumferential surface of the female screw 1 can be substantially straight-shaped or expanded in a tapered shape at a portion where the plurality of internal threads 11 are provided. This embodiment first takes a straight cylindrical shape of equal diameter as an example. The description, while the tapered shape of the expansion is described in detail later.
  • the externally threaded member 2 has a central axis A2, and the outer peripheral surface of the externally threaded member 2 is provided with a plurality of external threads 21 which are spirally connected about the central axis A2.
  • the outer peripheral surface of the male screw 2 can be substantially straight-shaped or expanded in a tapered shape at a portion where the plurality of external threads 21 are provided, so as to be able to be internal to the internal thread 11 of the internally threaded member 1.
  • a first embodiment of the present invention is characterized in that the pitches P1 of the plurality of internal threads 11 of the internally threaded member 1 are the same, and the external threads of the externally threaded member 2 are the same.
  • the pitch P2 of 21 is the same, and the pitch P1 of the internal thread 11 and the external thread 21 Although the pitch P2 is different, the pitch P1 is smaller than the pitch P2 as an example, but it may be reversed; the remaining thread specifications are matched, for example, the thread height (the spiral peak and the spiral valley are orthogonal to the central axis).
  • a linear distance, a thread angle, or the like causes the plurality of external threads 21 of the male screw member 2 to be screwed to the plurality of internal threads 11 of the female screw member 1.
  • the central axis A1 of the internally threaded member 1 can be coaxial with the central axis A2 of the externally threaded member 2, and
  • the upper and lower surfaces of each of the external threads 21 having a large pitch P2 are interfered with the upper and lower surfaces of the internal threads 11 having a small pitch P1 to fasten the latches with each other without leaving a slight gap, thereby ensuring the The internally threaded member 1 and the externally threaded member 2 can be screwed tightly and securely.
  • the internally threaded member 1 and the externally threaded member 2 have a rotation from the externally threaded member 2 due to vibration, since the internally threaded member 1 and the externally threaded member 2 are up and down The surface forms an interference and is tightly screwed without gaps. Therefore, the internally threaded member 1 and the externally threaded member 2 do not form a loose rotation due to vibration, thereby preventing the internally threaded member 1 from being The externally threaded member 2 has the effect of loosening the external force.
  • the difference between the pitch P2 and the pitch P1 is preferably about 0.05 to 0.5% of the larger value (for example, when the pitch P1 is smaller than the pitch P2, the difference is about 0.05 to the pitch P2). 0.5%), when the internally threaded member 1 is screwed with the externally threaded member 2, a large force can be applied by means of a wrench or a pneumatic tool, so that the internally threaded member 1 and the externally threaded member 2 are The screw is screwed so that the internally threaded member 1 and the externally threaded member 2 can be screwed tightly and firmly.
  • the total pitch difference accumulated by the total number of threads of the internally threaded internal thread 11 and the external thread 21 is preferably better. It is not more than 20% of the pitch P2 of the larger value to ensure that the internally threaded member 1 and the externally threaded member 2 can be screwed and the non-external force is prevented from being loosened.
  • the main difference between the second embodiment of the present invention and the first embodiment is that the second embodiment of the present invention has an internal thread in addition to the aforementioned pitch difference. 11 has a slight difference in thread height from the external thread 21.
  • a plurality of internal threads 11 of the internally threaded member 1 can be selected.
  • the small diameter (the width of the spiral peak of each of the internal threads 11) is equal to the small diameter of the plurality of external threads 21 of the male screw 2 (the width of the external thread 21 is wide), and the internally threaded member 1
  • the thread height H1 of each of the internal threads 11 (the linear distance between the spiral peak and the spiral valley in the direction orthogonal to the central axis A1) is smaller than the thread height H2 of the external thread 21 of the externally threaded member 2 (spiral peak) a linear distance from the spiral valley in the direction orthogonal to the central axis A2).
  • the internal thread 11 can be used to The thread height difference of the external thread 21 is such that the screw peak of each of the external threads 21 is slightly deformed or even broken by the screw valley of the corresponding internal thread 11, thereby further strengthening the internally threaded member 1 and the externally threaded member 2 The tightness of the screw.
  • the inner tube joint can also be selected as the internally threaded member 1, and the outer tube joint is selected as the externally threaded member 2, and the internally threaded member 1 is The externally threaded member 2 is configured to be opposite to the foregoing.
  • the large diameters of the plurality of internal threads 11 of the female screw 1 (the width of each of the female threads 11 are wide) and the major diameters of the plurality of external threads 21 of the male screw 2 (each of the outer diameters)
  • the thread diameters of the threads 21 are equal, and the thread height H1 of each of the internal threads 11 of the internally threaded member 1 is greater than the thread height H2 of the external threads 21 of the externally threaded member 2.
  • the internal thread 11 can be used to The thread height difference of the external thread 21 causes the screw peak of each of the internal threads 11 to be slightly deformed or even broken by the screw valley of the corresponding external thread 21, thereby further strengthening the internally threaded member 1 and the externally threaded member 2 The tightness of the screw.
  • the main difference between the third embodiment of the present invention and the first embodiment is that the third embodiment of the present invention, in addition to the aforementioned pitch difference, further
  • the thread angle ⁇ 1 of each of the internal threads 11 of the female screw member 1 is the same
  • the thread angle ⁇ 2 of each of the external threads 21 of the male screw member 2 is the same
  • the thread angle of each of the internal threads 11 of the female screw member 1 is the same.
  • ⁇ 1 is smaller than the thread angle ⁇ 2 of each of the external threads 21 of the externally threaded member 2.
  • the third embodiment of the present invention is still described by a nut and a screw that can be screwed together. But not limited to this.
  • the internally threaded member 1 and the externally threaded member 2 are screwed together, except that the upper and lower surfaces of the internal thread 11 and the external thread 21 are mutually engaged.
  • the upper and lower surfaces of each of the external threads 21 having a larger thread angle ⁇ 2 may be interfered with the upper and lower surfaces of the internal threads 11 having a smaller thread angle ⁇ 1 to fasten the latches to each other, thereby further strengthening the inner portion.
  • the threaded member 1 is screwed tightly with the externally threaded member 2.
  • the thread of the fourth embodiment of the present invention forms a non-parallel thread
  • the main difference from the first embodiment is that the thread of the fourth embodiment of the present invention has an internal thread.
  • the inner peripheral surface of the member 3 can be substantially expanded in a tapered shape at a portion where the plurality of internal threads 31 are provided.
  • the inner tube joint (three types) and the outer tube joint that can be screwed together are used as the internally threaded member 3 and the externally threaded member 4, but not limited thereto.
  • the large diameter of the plurality of internal threads 31 of the internally threaded member 3 is decreased from the open end toward the inside of the tube to form a tapered thread; the externally threaded member 4 has a large diameter of the plurality of external threads 41 The free end is decremented to form a tapered thread as well.
  • the pitch P3 of the plurality of internal threads 31 of the internally threaded member 3 is selected to be the same, and the pitch P4 of the plurality of external threads 41 of the externally threaded member 4 is the same, and the pitch of the internal thread 31 is the same. P3 is different from the pitch P4 of the external thread 41.
  • the embodiment may be reversed; the remaining thread specifications are matched, for example, the thread height, the thread angle, and the like. According to this, when the internally threaded member 3 is screwed with the externally threaded member 4, the central axis A3 of the internally threaded member 3 can be coaxial with the central axis A4 of the externally threaded member 4, and the pitch P4 is compared. The upper and lower surfaces of each of the large external threads 41 interfere with the upper and lower surfaces of the internal threads 31 having a small pitch P3 to fasten the latches to each other without leaving a small gap, thereby ensuring the internal threads. The piece 3 is screwed tightly and securely to the externally threaded member 4.
  • internally threaded member 3 having the tapered thread and the externally threaded member 4 can also be compared with the foregoing embodiments 2 and 3, and the threaded height or thread angle of the threaded tapered thread can be further Some gaps interfere with each other to achieve the same reinforcing screw tightness as the previous embodiment.
  • Technical effects such as density are not detailed here.
  • the threaded screwing structure of the present invention can make a slight difference in the pitch specification by the internal thread of the internally threaded member and the external thread of the externally threaded member, so that the two can interfere with each other when screwing together to enhance The screw tightness, and since the internally threaded member forms interference with the upper and lower surfaces of the externally threaded member and is tightly screwed without gaps, it is possible to prevent the internally threaded member and the externally threaded member from being prevented. The effect of non-external force loosening due to vibration between the two.
  • the threaded screw structure of the present invention can improve assembly convenience and efficiency.
  • the threaded screw structure of the present invention can maintain the close contact without loosening or leakage, the frequency of re-examining and improving the looseness or leakage of both can be reduced, which helps to reduce maintenance. The labor and time costs required to solve problems that are long-standing and difficult to improve.

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  • General Engineering & Computer Science (AREA)
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Abstract

一种螺纹螺合构造，用以解决以往螺纹螺合不够紧密的问题，所述螺纹螺合构造包括一个具内螺纹件（1）及一个具外螺纹件（2），并借助使该具内螺纹件（1）的内螺纹（11）与该具外螺纹件（2）的外螺纹（21）在螺距（P1，P2）规格上产生些许差距，令内螺纹（11）与外螺纹（21）可相互干涉以提升螺合紧密度。

Description

螺纹螺合构造 技术领域
本发明涉及一种螺纹螺合构造，尤其是一种具螺纹的螺合构件互相螺合时，可提升螺合紧密度的螺纹螺合构造。
发明背景
常见可相螺合的具内螺纹件与具外螺纹件包括螺帽与螺丝、内牙管接头与外牙管接头等；以螺帽与螺丝为例，请参照图1，其是一种现有的螺帽91与螺丝92，该螺帽91的内周面具有呈螺旋状相连的数个内螺纹911，该螺丝92的外周面具有呈螺旋状相连的数个外螺纹921，且各该内螺纹911与各该外螺纹921的螺纹规格相匹配。据此，该现有的螺帽91与螺丝92相螺合时，该螺帽91的中心轴S1与该螺丝92的中心轴S2共轴，该螺丝92的其中数个外螺纹921与该螺帽91的数个内螺纹911相螺合。
然而，由于该螺丝92的外螺纹921与该螺帽91的内螺纹911相螺合时，在该外螺纹921的螺峰与该内螺纹911的螺谷之间，以及在该内螺纹911的螺峰与该外螺纹921的螺谷之间，都会形成相同的微小间隙，故该现有的螺帽91与螺丝92锁固后易因震动而逐渐松脱。
为此，目前的做法都是在锁固该现有的螺帽91与螺丝92后，额外使用工具夹压该螺帽91，使该螺帽91产生些微的变形，以缩小该螺帽91与该螺丝92的间隙，进而延缓该螺帽91与该螺丝92因震动而逐渐松脱的情况，但每经一段时间仍要重新检视及改善两者的松脱情况，致使长久以来都难以降低维护所需的人力与时间成本；且一旦疏于维护，还可能因螺帽91与螺丝92松脱而发生不必要的意外事件，故实有加以改善的必要。
相类似地，内牙管接头与外牙管接头螺合时也会有前述的微小间隙，因而需要缠绕如防漏胶布等物品，才能确定两者的密合以防漏液，故施工步骤较为繁琐，成本也较高。并且，防漏胶布之类的物品还会随使用时间变质老化，以致防漏效果逐渐变差，需要安排定期维护，故维护所需的人力、时间与消耗品等成本均难以降低。
发明内容
为解决上述问题，本发明提供一种螺纹螺合构造，其相螺合的内螺纹与外螺纹可相互干涉以提升螺合紧密度，从而使得相螺合的具内螺纹件与具外螺纹件可形成不易松脱的固定结构及可达到良好的防漏效果。
本发明的螺纹螺合构造，包括：一个具内螺纹件，该具内螺纹件的内周面设有呈螺旋状相连的数个内螺纹；及一个具外螺纹件，该具外螺纹件的外周面设有呈螺旋状相连的数个外螺纹，该数个外螺纹与该数个内螺纹相螺合；其中，各该内螺纹的螺距相同，各该外螺纹的螺距相同，而该内螺纹的螺距与该外螺纹的螺距不同。
据此，本发明的螺纹螺合构造，可借助使具内螺纹件的内螺纹与该具外螺纹件的外螺纹在螺距规格上产生些许差距，令两者螺合时能相互干涉以提升螺合紧密度，且由于该具内螺纹件与该具外螺纹件的上、下表面形成干涉且成无间隙的紧密螺合，因此，可以达到防止该具内螺纹件与该具外螺纹件两者间因震动而形成非外力松转的效果。故当该具内螺纹件为螺帽时，安装该螺帽后并不需要再夹压该螺帽至变形，即可确保螺合不易松脱；当该具内螺纹件为内牙管接头时，安装该内牙管接头可不必再使用如防漏胶布等物品即可确保防漏效果良好；因此，本发明的螺纹螺合构造可提升组装便利性及效率。而且，由于本发明的螺纹螺合构造相螺合后能维持密接而不易松脱或产生渗漏情况，故重新检视及 改善两者松脱或渗漏情况的频率将可降低，有助降低维护所需的人力与时间成本，解决长期存在且难以改善的问题。
其中，该外螺纹与该内螺纹的螺距差值为较大值者的0.05～0.5％；螺距差值介于该范围中，可确保具内螺纹件与具外螺纹件顺畅螺合，并提升内螺纹与外螺纹的螺合紧密度。
其中，该具内螺纹件与该具外螺纹件相螺合时，该相螺合的内螺纹及外螺纹总螺合数所累积的总螺距差值不大于较大值者的20％。
其中，该数个内螺纹的小径与该数个外螺纹的小径相等，各该内螺纹的螺纹高度小于各该外螺纹的螺纹高度；或者，该数个内螺纹的大径与该数个外螺纹的大径相等，各该内螺纹的螺纹高度大于各该外螺纹的螺纹高度，以更加强化该具内螺纹件与该具外螺纹件的螺合紧密度。
其中，各该内螺纹的螺纹角相同，各该外螺纹的螺纹角相同，而该内螺纹的螺纹角小于该外螺纹的螺纹角，以更加强化该具内螺纹件与该具外螺纹件的螺合紧密度。
其中，该数个内螺纹的大径由一端朝另一端递减以形成锥状螺纹，该数个外螺纹的大径由一端朝另一端递减以形成锥状螺纹；该结构具有提升内螺纹与外螺纹的螺合紧密度等技术效果。
附图简要说明
图1：一种现有的螺帽与螺丝相螺合的侧剖结构示意图；
图2：本发明实施例一的平面分解结构示意图；
图3：本发明实施例一的局部放大示意图；
图4：本发明实施例二另使内螺纹的螺纹高度小于外螺纹的螺纹高度时的平面分解结构示意图；
图5：本发明实施例二的局部放大示意图；
图6：本发明实施例二另使内螺纹的螺纹高度大于外螺纹的螺纹高度时的平面分解结构示意图；
图7：本发明实施例三的平面分解结构示意图；
图8：本发明实施例三的局部放大示意图；
图9：本发明实施例四的平面分解结构示意图。
实施本发明的方式
为让本发明的上述及其他目的、特征及优点能更明显易懂，下文特举本发明的较佳实施例，并配合附图，作详细说明如下：
请参照图2，其是本发明螺纹螺合构造的实施例一，该螺纹螺合构造大致上包括一个具内螺纹件1及一个具外螺纹件2，该具内螺纹件1与该具外螺纹件2可以是任何能够相互螺合锁固的构件，例如螺帽与螺丝、内牙管接头与外牙管接头等螺纹螺合构件；本发明实施例一以可相互螺合锁固的具平行螺纹的螺帽与螺丝予以说明，但不以此为限。
该具内螺纹件1具有一个中心轴A1，该具内螺纹件1的内周面设有数个内螺纹11，该数个内螺纹11以该中心轴A1为中心呈螺旋状相连。该具内螺纹件1的内周面在设有该数个内螺纹11的部位可大致呈等径的直筒状或扩径的锥状型态；本实施例先以等径的直筒状为例说明，而扩径的锥状则容后详述。
该具外螺纹件2具有一个中心轴A2，该具外螺纹件2的外周面设有数个外螺纹21，该数个外螺纹21以该中心轴A2为中心呈螺旋状相连。该具外螺纹件2的外周面在设有该数个外螺纹21的部位可大致呈等径的直筒状或扩径的锥状型态，以能够与该具内螺纹件1的内螺纹11相螺合为原则。
请参照图2、3，本发明实施例一的特征在于，该具内螺纹件1的该数个内螺纹11的各螺距(pitch)P1相同，该具外螺纹件2的该数个外螺纹21的各螺距P2相同，而该内螺纹11的螺距P1与该外螺纹21的 螺距P2不同，本实施例虽以螺距P1小于螺距P2为例表示，但也可以是相反设置；其余螺纹规格则相匹配，例如螺纹高度(螺峰与螺谷在正交于中心轴方向上的直线距离)、螺纹角(thread angle)等，使该具外螺纹件2的数个外螺纹21得以螺合该具内螺纹件1的数个内螺纹11。
据此结构，该具内螺纹件1与该具外螺纹件2相螺合时，该具内螺纹件1的中心轴A1可与该具外螺纹件2的中心轴A2共轴，且可借助螺距P2较大的各该外螺纹21的上、下表面与螺距P1较小的各该内螺纹11的上、下表面产生干涉以相互紧固卡掣而不再留有微小间隙，借以确保该具内螺纹件1与该具外螺纹件2能紧密而稳固地螺合。且该相螺合的具内螺纹件1与该具外螺纹件2即使有来自因震动而欲形成松脱的转动时，由于该具内螺纹件1与该具外螺纹件2的上、下表面形成干涉且成无间隙的紧密螺合，因此，该具内螺纹件1与该具外螺纹件2不会因震动而形成松脱的转动，进而可以达到防止该具内螺纹件1与该具外螺纹件2非外力松转的效果。
值得一提的是，该螺距P2与该螺距P1的差值较佳约为较大值者的0.05～0.5％(例如，当螺距P1小于螺距P2时，该差值约为螺距P2的0.05～0.5％)，当该具内螺纹件1与该具外螺纹件2相螺合时，可以借助板手或气动工具施以较大力量，使该具内螺纹件1与该具外螺纹件2相螺合，以使该具内螺纹件1与该具外螺纹件2能紧密而稳固地螺合。此外，该具螺距差的该具内螺纹件1与该具外螺纹件2相螺合时，该相螺合的内螺纹11及外螺纹21总螺合数所累积的总螺距差值较佳不大于较大值者螺距P2的20％，以确保该具内螺纹件1与该具外螺纹件2能达到螺合及防止非外力松转的效果。
请参照图4，其是本发明螺纹螺合构造的实施例二，本发明实施例二与上述的实施例一的主要差异在于：本发明实施例二除了前述的螺距差外，另使内螺纹11与外螺纹21具有些许的螺纹高度差。
例如，请参照图4、5，可选择使该具内螺纹件1的数个内螺纹11 的小径(各该内螺纹11的螺峰径宽)与该具外螺纹件2的数个外螺纹21的小径(各该外螺纹21的螺谷径宽)相等，且该具内螺纹件1的各该内螺纹11的螺纹高度H1(螺峰与螺谷在正交于该中心轴A1方向上的直线距离)小于该具外螺纹件2的各该外螺纹21的螺纹高度H2(螺峰与螺谷在正交于该中心轴A2方向上的直线距离)。据此，该具内螺纹件1与该具外螺纹件2相螺合时，除了前述由内螺纹11与外螺纹21的上、下表面相互卡掣之外，还可借助该内螺纹11与该外螺纹21的螺纹高度差，使各该外螺纹21的螺峰略微地受到对应内螺纹11的螺谷挤压变形甚至破坏，从而更加强化该具内螺纹件1与该具外螺纹件2的螺合紧密度。
或者，请参照图6，在其他实施例中，也可选择内牙管接头作为具内螺纹件1，及选择外牙管接头作为该具外螺纹件2，并将该具内螺纹件1与该具外螺纹件2设为与前述相反的结构。即，使该具内螺纹件1的数个内螺纹11的大径(各该内螺纹11的螺谷径宽)与该具外螺纹件2的数个外螺纹21的大径(各该外螺纹21的螺峰径宽)相等，且该具内螺纹件1的各该内螺纹11的螺纹高度H1大于该具外螺纹件2的各该外螺纹21的螺纹高度H2。据此，该具内螺纹件1与该具外螺纹件2相螺合时，除了前述由内螺纹11与外螺纹21的上、下表面相互卡掣之外，还可借助该内螺纹11与该外螺纹21的螺纹高度差，使各该内螺纹11的螺峰略微地受到对应外螺纹21的螺谷挤压变形甚至破坏，从而更加强化该具内螺纹件1与该具外螺纹件2的螺合紧密度。
请参照图7，其是本发明螺纹螺合构造的实施例三，本发明实施例三与上述的实施例一的主要差异在于：本发明实施例三除了前述的螺距差外，另使该具内螺纹件1的各该内螺纹11的螺纹角θ1相同，该具外螺纹件2的各该外螺纹21的螺纹角θ2相同，而该具内螺纹件1的各该内螺纹11的螺纹角θ1小于该具外螺纹件2的各该外螺纹21的螺纹角θ2。又，本发明实施例三仍以可相互螺合锁固的螺帽与螺丝予以说明， 但不以此为限。
请参照图7、8，据由前述结构，相螺合的具内螺纹件1与具外螺纹件2，除了前述由内螺纹11与外螺纹21的上、下表面相互卡掣之外，还可借助螺纹角θ2较大的各该外螺纹21的上、下表面与螺纹角θ1较小的各该内螺纹11的上、下表面产生干涉以相互紧固卡掣，从而更加强化该具内螺纹件1与该具外螺纹件2的螺合紧密度。
请参照图9，其是本发明螺纹螺合构造的实施例四，本发明实施例四的螺纹形成非平行螺纹，与上述的实施例一的主要差异在于：本发明实施例四的具内螺纹件3的内周面在设有数个内螺纹31的部位可大致呈扩径的锥状型态。其中，本实施例以能够相互螺合锁固的内牙管接头(三通式)与外牙管接头作为具内螺纹件3与具外螺纹件4，但不以此为限。
具体的，该具内螺纹件3的数个内螺纹31的大径由开口端朝管内方向递减，以形成锥状螺纹；该具外螺纹件4则使其数个外螺纹41的大径朝自由端递减，以同样形成锥状螺纹。本实施例选择使该具内螺纹件3的该数个内螺纹31的各螺距P3相同，该具外螺纹件4的该数个外螺纹41的各螺距P4相同，而该内螺纹31的螺距P3与该外螺纹41的螺距P4不同，本实施例虽以螺距P3小于螺距P4为例表示，但也可以是相反设置；其余螺纹规格则相匹配，例如螺纹高度、螺纹角等。据此，该具内螺纹件3与该具外螺纹件4相螺合时，该具内螺纹件3的中心轴A3可与该具外螺纹件4的中心轴A4共轴，且螺距P4较大的各该外螺纹41的上、下表面与螺距P3较小的各该内螺纹31的上、下表面产生干涉以相互紧固卡掣而不再留有微小间隙，借以确保该具内螺纹件3与该具外螺纹件4能紧密而稳固地螺合。
除此之外，具有锥状螺纹的该具内螺纹件3及该具外螺纹件4，还可以比照前述实施例二、三，另使相螺合的锥状螺纹的螺纹高度或螺纹角再有些许差距以相互干涉，从而达到与前述实施例相同的强化螺合紧 密度等技术效果，于此不再详述。
综上所述，本发明的螺纹螺合构造，可借助该具内螺纹件的内螺纹与具外螺纹件的外螺纹在螺距规格上产生些许差距，令两者螺合时能相互干涉以提升螺合紧密度，且由于该具内螺纹件与该具外螺纹件的上、下表面形成干涉且成无间隙的紧密螺合，因此，可以达到防止该具内螺纹件与该具外螺纹件两者间因震动而形成非外力松转的效果。故当该具内螺纹件为螺帽时，安装该螺帽后并不需要再夹压该螺帽至变形，即可确保螺合不易松脱；当该具内螺纹件为内牙管接头时，安装该内牙管接头可不必再使用如防漏胶布等物品即可确保防漏效果良好；因此，本发明的螺纹螺合构造可提升组装便利性及效率。而且，由于本发明的螺纹螺合构造相螺合后能维持密接而不易松脱或产生渗漏情况，故重新检视及改善两者松脱或渗漏情况的频率将可降低，有助降低维护所需的人力与时间成本，解决长期存在且难以改善的问题。
【附图标记说明】
﹝本发明﹞
1具内螺纹件                11内螺纹
2具外螺纹件                21外螺纹
3具内螺纹件                31内螺纹
4具外螺纹件                41外螺纹
A1、A2、A3、A4中心轴
H1、H2螺纹高度
P1、P2、P3、P4螺距
θ1、θ2螺纹角
﹝现有技术﹞
91螺帽                      911内螺纹
92螺丝                      921外螺纹
S1、S2中心轴。

Claims (7)

  1. 一种螺纹螺合构造，其特征在于，其包括：
    一个具内螺纹件，该具内螺纹件的内周面设有呈螺旋状相连的数个内螺纹；及
    一个具外螺纹件，该具外螺纹件的外周面设有呈螺旋状相连的数个外螺纹，该数个外螺纹与该数个内螺纹相螺合；
    其中，各该内螺纹的螺距相同，各该外螺纹的螺距相同，而该内螺纹的螺距与该外螺纹的螺距不同。
  2. 根据权利要求1所述的螺纹螺合构造，其特征在于：
    该外螺纹与该内螺纹的螺距差值为较大值者的0.05～0.5％。
  3. 根据权利要求1所述的螺纹螺合构造，其特征在于：
    该具内螺纹件与该具外螺纹件相螺合时，该相螺合的内螺纹及外螺纹总螺合数所累积的总螺距差值不大于较大值者的20％。
  4. 根据权利要求1所述的螺纹螺合构造，其特征在于：
    该数个内螺纹的小径与该数个外螺纹的小径相等，各该内螺纹的螺纹高度小于各该外螺纹的螺纹高度。
  5. 根据权利要求1所述的螺纹螺合构造，其特征在于：
    该数个内螺纹的大径与该数个外螺纹的大径相等，各该内螺纹的螺纹高度大于各该外螺纹的螺纹高度。
  6. 根据权利要求1所述的螺纹螺合构造，其特征在于：
    各该内螺纹的螺纹角相同，各该外螺纹的螺纹角相同，而该内螺纹的螺纹角小于该外螺纹的螺纹角。
  7. 根据权利要求1-6中任一项所述的螺纹螺合构造，其特征在于：
    该数个内螺纹的大径由一端朝另一端递减以形成锥状螺纹，该数个 外螺纹的大径由一端朝另一端递减以形成锥状螺纹。
PCT/CN2016/112960 2016-12-29 2016-12-29 螺纹螺合构造 WO2018119847A1 (zh)

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US4854794A (en) * 1986-01-18 1989-08-08 Kamax-Werke Rudolf Kellermann Gmbh & Co. Kg Connector of the nut-and-bolt type
EP1391618A1 (de) * 2002-08-23 2004-02-25 HYDAC Electronic GmbH Schraubensicherung
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