JP2005249084A5 - - Google Patents

Description

Screw locking mechanism

      In this invention, a nut etc. in a fastening state with a female screw meshing with a male screw causes loosening from the fastening state, and this occurrence phenomenon is mainly used for structures such as electricity, machinery, architecture, etc. that receive vibration, The present invention relates to a screw locking mechanism that can prevent a female screw from loosening from a male screw.

      Conventionally, there are various types in which a male screw and a female screw mesh with each other to incorporate a loosening prevention means. Among them, techniques close to the present invention include Patent Documents 1 to 4 listed below.

Patent Document 1 among them is to loosening prevention plate attached to the female screw Yuku enters clamped attached while being elastically deformed to the male screw, fastening while requiring a large torque from the first tightening Therefore, tightening work becomes difficult, and it does not reach a force that can be a sufficient stopper to prevent loosening, and it can easily turn to the loose side, so it does not prevent strong loosening. Has the disadvantage of becoming high.

      In addition, Patent Document 2 regulates the movement between the fastening surface and the mounting member by biting a hard member between them, and obtains the effect of rotation prevention. Since it must be soft, the hard member falls down, so a gap is likely to occur between them, and soft washers such as plastic and rubber become tattered with changes over time etc. It has a drawback.

      For Patent Documents 3 and 4, after passing a mounting member and a nut or a washer through a male screw, the side surface of the other nut is provided with a protrusion on the other side, and the protrusion is pressed into the screw hole of the nut or washer. The projecting part is designed to increase the locking effect by the frictional force with which the projecting part is wound on the external thread. This is because the dimension of the nut or washer that enters the projecting part in particular with respect to the dimension in the outer diameter direction. If it is not appropriate, it will not enter, and a gap will be formed between the mounting member.

      In addition, if the dimension of the protruding portion that bites into the nut or the washer is increased, it becomes difficult to bite into the nut or the washer. For example, if the protruding portion is thick, it is difficult to deform. On the contrary, if the protrusion is thin, it has a drawback that it is difficult to generate a frictional force that prevents rotation.

      These conventional background arts have their respective drawbacks and cannot be said to be a technique that exhibits a sufficient effect for preventing loosening.

JP 59-133161 JP-A-8-135642 JP-A-11-315820 JP2003-294221A

      The present invention prevents the screw tightened with the male screw and the female screw from loosening, and there are a number of technologies in this range in order to achieve the target. Did not provide a sufficient effect.

Therefore, the object of the present invention was invented in view of the conventional drawbacks, and it is absolutely possible that the male screw will come out of any bad condition for the female screw to come out of the male screw by meshing with the other female screw. and is able to hold the engagement state, such as not, also, to provide a lock Organization of the screw was also possible to remove the female screw from the released to the male screw what is in the engaged state of the male screw and the female screw There is.

      According to a first aspect of the present invention, there is provided a screw lock comprising a through hole provided with a lock rod that passes from one tightening surface of a female screw body having a female screw to the thread surface of the female screw. Achieved by mechanism.

According to a second aspect of the present invention, there is provided a through hole provided with a lock rod that penetrates from one tightening surface of a female screw body having a female screw to a threaded surface of the male screw in which the male screw and the female screw are screwed together. This is achieved by a screw locking mechanism characterized in that.

According to a third aspect of the present invention, there is provided a through hole provided with a lock rod that penetrates from one tightening surface of a female screw body having a female screw to the thread surface of the female screw, and the lock rod is provided in the through hole. This is achieved by a screw locking mechanism which is provided to prevent loosening of the female screw body.

According to a fourth aspect of the present invention, there is provided a through hole provided with a lock rod that penetrates from one tightening surface of a female screw body having a female screw to a thread surface of the male screw, and the lock rod is provided in the through hole. This is achieved by a screw locking mechanism which is provided to prevent loosening of the female screw body.

      According to a fifth aspect of the present invention, the mounting member is attached to the mounting base with a male screw body. From the mounting member to which the tightening force of the male screw body is applied or from the tightening surface of the mounting base to the thread surface of the male screw body This is achieved by a screw locking mechanism characterized in that a through hole leading to the mounting member or the mounting base is provided.

      According to a sixth aspect of the present invention, the attachment member is attached to the attachment base with a male screw body. From the attachment member to which the fastening force of the male screw body is applied or the fastening surface of the attachment base, the thread surface of the male screw body is provided. This is achieved by a screw locking mechanism characterized in that a through hole that communicates is provided in the mounting member or mounting base, and a locking rod is provided in the through hole to prevent the male screw body from loosening.

      The effect obtained by the present invention differs depending on the embodiment of the invention. One of them is that the mounting base and the mounting member to be mounted by the male screw are passed through the male screw, and both the members are tightened by the female screw for mounting. is there.

When a through hole is provided from the tightening surface of the female screw body to the screw surface of the female screw, and the lock rod is mounted and arranged inside the through hole, the female screw body is tightened and the lock rod is moved toward the mounting member. Is compressed by being sandwiched between the thread of the male screw and the mounting member using the side wall of the through hole as a guide.

      Further, when the female screw body is brought close to the mounting member, the lock rod is strongly compressed, and the mounting member is tightened while increasing the tightening torque.

      In this tightening process, the lock rod gradually increases in compression degree by turning the female screw body, so that the lock rod is attached to the screw thread surface of the male screw through the female screw body.

      In the process where the female screw body comes into pressure contact with the mounting member, the lock rod is sandwiched between the thread surface of the male screw and the mounting member, and the tightening torque of the female screw increases as the tightening process proceeds It is tightened while.

The female screw body can be joined to the male screw body by the lock rod together with the tightening action of the lock rod to obtain an effect of preventing a strong screw from loosening.

      Further, when these inventions are applied to others, a through hole is provided in the mounting member or the mounting base, and a lock rod is provided in the through hole, so that a female screw is provided in the mounting base in this manner, and the female screw is provided. When the mounting screw is screwed onto the mounting base and the mounting member is mounted on the mounting base with the male screw body, the locking rod action can provide the same locking mechanism action as when the lot stick is used for the female screw body. The male screw body can also provide an effect of providing a strong locking prevention by the lock rod via the mounting member or mounting base.

      The present invention not only provides a strong locking mechanism for preventing loosening of the screw by compressing the lock rod, but also the surface of the female screw body and male screw body even after the female screw body and male screw body are mounted. Since the design is not destroyed, it is possible to obtain an effective effect of the invention such that the design can be used even in a place having a decorative property.

      In this way, it is possible to obtain an advantageous effect of the invention that prevents the screw from loosening with a simple structure.

      When the mounting base and the mounting member are passed through the shaft of the male screw body and the mounting member is mounted on the mounting base with the male screw body, the female screw body is screwed onto the male screw to mount the mounting member on the mounting base with the male screw body. When a through hole is provided in the threaded surface of the male screw body from the contact surface between the female screw body and the mounting member, and the female screw body is tightened with a lock rod provided in the through hole, Tightening proceeds with the same tightening torque as normal screw tightening, but as the male screw body approaches the mounting member, the lock rod is sandwiched between the thread surface of the male screw body and the mounting member with the side wall of the through hole as a guide. Compressed.

      Further, when the female screw body is brought close to the mounting member, the lock rod is strongly compressed, and the tightening torque is increased and the mounting member is tightened.

      In this tightening process, the lock rod gradually increases in compression by rotating the female screw body, so that the lock rod is attached to the mounting member and the thread surface of the male screw through the female screw body. .

      In the process in which the female screw body comes into pressure contact with the mounting member, the lock rod is sandwiched between the thread of the male screw and the mounting member, and the tightening torque of the female screw increases as the tightening process proceeds. It is tightened while.

The female screw body is capable of obtaining an effect of firmly locking the male screw body by the lock rod together with the compression action of the lock rod and preventing a strong screw from loosening.

      In this invention, when a female screw is provided on the mounting base and the mounting member is mounted on the mounting base with a male screw body, the female screw body is provided with a through hole and a lock rod so that the male screw body does not come loose and loosen. By applying a lock mechanism that has obtained the effect of stopping, an attachment member, an attachment base, or the like is attached with a male screw body.

      By installing a through-hole that becomes a screw locking mechanism on the threaded surface of the male screw body from the mounting member or mounting base, etc., and mounting the lock rod on the through hole, the mounting member or mounting base is tightened with the male screw body. As in the case where a through hole is provided in the female screw body and a lock rod is provided to prevent loosening, the force that compresses the lock rod acts on the male screw screw, and the male screw body It is possible to obtain an effect that is a strong locking.

      In the invention so far, the lock rod provided in the through hole may be temporarily attached to the through hole with an adhesive so that the lock rod does not fall off during tightening.

      The present invention will be described with reference to the drawings. FIG. 1 shows a female screw body for fastening a mounting member Y in a case where a mounting member Y is attached to a distal end side of a male screw body passed from the mounting base X side by a female screw body 5 made of a nut or the like. 5 is provided with a notch 4 in the tightening surface 3, a through hole 10 is provided in the threaded surface 2 of the male screw body 1 from the notch 4, and a lock rod A is provided inside the through hole 10. is there.

      Although the through hole 10 may be provided directly on the tightening surface 3, a notch portion 4 is provided to make the through hole 10 easy to manufacture.

FIG. 2 shows that when the female screw body 5 screwed to the male screw body 1 arranged as shown in FIG. 1 is rotated in the tightening direction, the lock rod A first provided on the female screw body 5 is attached to the mounting member Y and the screw thread. Compressed between face 2

      When the tightening torque of the female screw body 5 is gradually increased due to the phenomenon caused by this, the mounting member Y is tightened between the tightening surface 3 and the mounting base X while the lock rod A is deformed. . This completes the tightening.

During this tightening process, the lock rod A is sandwiched between the mounting member Y and the tightening surface 3 while elastically deforming, and the tightening torque gradually increases as the female screw body 5 advances in the tightening direction while rotating. The female screw body 5 is tightened by compressing and deforming the lock rod A while being elastically deformed.

Since the lock rod A is sandwiched between the mounting member Y and the fastening surface 3 and compressed, the lock rod A is fixed by the compressive force, and the female screw body 5 is a screw that does not move from the male screw body 1. It is possible to obtain the effect of preventing strong loosening.

      Since the lock rod A may not be elastically deformed depending on the shape and material of the lock rod A, the lock rod A may be used as the lock rod A. This requires a selection condition such as the length of

      In order to obtain an appropriate locking effect, the lock rod A requires a spring action, and the lock rod may be bent in a coil shape so that it has elasticity during compression. Also, it is possible to obtain a function of preventing loosening by selecting a soft metal or the like and selecting a hardness, a shape, or the like.

FIG. 4 is an application example of FIG. 1, and a through-hole 20 is provided from the tightening surface 13 of the female screw body 15 made so as to match the recess 9 such as the attachment member Z to the thread surface 12 of the male screw body 11. By attaching the lock rod A to the through hole 20 and attaching the female screw body 15 to the mounting member Z , the female screw body 15 is attached to the male screw body 11, and then the female screw The action for preventing the body 15 from coming loose occurs as in FIG.

      In FIG. 5, the lock rod A provided on the female screw body 25 is provided with two through-holes 30 in the female screw body 25, and the lock screw A is provided on the female screw body 25 in this way so that more powerful loosening is achieved. The stopping effect is improved.

      In this way, even when the force compressed by the thread surface of the mounting member and the male screw body is small, or even when the lock rod is not deformed, a strong loosening prevention effect can be improved.

Figure 7 is provided with a plurality of through holes 40 on either side of the clamping surface 3 3 of the female screw member 35, thereby improving a strong locking effect is the illustration for widening the use range of the female screw member .

The case where the present invention is applied will be described. FIG. 9 shows a fastening surface for attaching the attachment member Y to the attachment base X when the attachment member Y is screwed onto the female screw of the attachment base X by the male screw body 21. By providing the through hole 50 and the through hole 60 in the mounting base X and attaching the two lock rods A to the through holes, the two lock rods A are attached to the mounting member Y when the male screw body 21 is rotated in the tightening direction. And compressed by the thread surface 42 of the male screw body 21.

      Due to the phenomenon caused by this, when the tightening torque of the male screw body 21 is gradually increased, the lock rod A is deformed and tightened between the tightening surface of the mounting member Y and the thread surface 42. . This completes the tightening.

In this tightening process, the two lock bars A are sandwiched between the mounting member Y and the thread surface 42, and the tightening torque gradually increases as the male screw body 21 advances in the tightening direction while rotating. The male screw body 21 is tightened by compressing and deforming the lock rod A.

Since two locking rods A is compressed sandwiched mounting member Y and the threaded surface 42, the two locking bars A made of the condition to be fixed by the compressive force, the male screw member 21 from the mounting base X It is possible to obtain an effect to prevent the loosening of the screw that does not move.

Although the clamping surfaces two locking rods are fastened to 9 described as an attachment member Y, which is a case mounting member Y is thin, providing the through hole in the member Y with the case mounting member Y is thick preparative By doing so, even if the tightening surface is the side surface of the head of the male screw body, the same action can be obtained.

      Since the lock rod A may not be deformed depending on the shape or material of the lock rod A, the lock rod A may be used as the lock rod A. Therefore, the lock rod A must be an appropriate length according to the required dimension between the mounting member Y and the thread surface 42. Selection conditions such as farewell are required.

      In order to obtain an appropriate locking effect, the lock rod A requires a spring action, and the lock rod may be bent in a coil shape so that it has elasticity during compression. Also, it is possible to obtain a function of preventing loosening by selecting a soft metal or the like and selecting a hardness, a shape, or the like.

      FIG. 11 shows another application example of FIG. 9 in which when the attachment member Y is attached to the attachment base X with the male screw body 51, the attachment member Y and the attachment base X are prevented so that the male screw body 51 is not loosened from the attachment base X. In addition, it is possible to obtain an effect of providing a strong locking prevention so that the male screw body 51 does not come out by providing each lock rod A and compressing each lock rod A.

Fragmentary cross-sectional view showing an embodiment of a lock Organization of the screw of the present invention. FIG. 2 is a cross-sectional view of a main part showing a tightening state of FIG. 1. The right view of the internal thread body of FIG. The principal part sectional drawing which shows the modification which expanded the application range of FIG. The principal part sectional drawing which shows the application example of the internal thread body of FIG. The right view of the internal thread body of FIG. The principal part sectional drawing which shows the other application example of an internal thread body. The side view which shows the external shape of an internal thread body by a round shape. Fragmentary cross-sectional view showing another embodiment of a lock Organization of the screw of the present invention. FIG. 10 is a left side view when a lock rod is provided on the mounting base of FIG. 9. Fragmentary cross-sectional view showing another embodiment of a lock Organization of the screw of the present invention. The perspective view which shows various examples of a lock stick.

Explanation of symbols

1.11.21.51: Male thread body 2.12.42: Screw thread surface 3.13.23.33: Fastening surface 4: Notch 5.15.25.35.45: Female thread body 9: Concave surface 10.20.30.40.50.60: Through hole A: Lock rod Y. Z : Mounting member X: Mounting base

Claims (6)

  A screw locking mechanism comprising a through-hole provided with a lock rod penetrating from one tightening surface of a female screw body having a female screw to a thread surface of the female screw. A screw locking mechanism comprising a through-hole provided with a lock rod penetrating from one tightening surface of a female screw body having a female screw to a screw thread surface of a male screw.   A through hole for providing a lock rod penetrating from one tightening surface of a female screw body having a female screw to the thread surface of the female screw is provided, and the lock rod is provided in the through hole. Lock mechanism. A through hole for providing a lock rod penetrating from one tightening surface of a female screw body having a female screw to the thread surface of the male screw is provided, and the lock rod is provided in the through hole. Lock mechanism.   For mounting the mounting member on the mounting base with a male screw body, mount the mounting member to which the tightening force of the male screw body is applied or a through hole equipped with a lock rod that leads from the tightening surface of the mounting base to the thread surface of the male screw body A screw locking mechanism provided on a member or mounting base.   For mounting the mounting member on the mounting base with a male screw body, mount the mounting member to which the tightening force of the male screw body is applied or a through hole equipped with a lock rod that leads from the tightening surface of the mounting base to the thread surface of the male screw body A screw locking mechanism provided on a member or an attachment base and provided with a lock rod in the through hole.