TWM642618U - Locking structure with self-locking internal thread - Google Patents

Abstract

This creation is related to a locking structure with self-locking internal threads, which includes a body, an internal thread hole and at least one receiving groove along an axial direction, and the internal thread hole has an internal thread bottom diameter along a radial direction and an inner thread inner diameter, and form a contact area between the inner thread bottom diameter and the inner thread inner diameter, the aforementioned container intersects with the contact area to communicate with the inner thread hole, and the capacity The groove wall of the groove is separated from the inner diameter of the internal thread by a distance along the radial direction; at least one fixing screw extends into the aforementioned cavity and is fixed on the body so that the threads of the aforementioned fixing screw intersect in the contact area, And the material hardness of the aforementioned fixing screw is lower than the material hardness of a bolt and the body. Thereby, the bolt is screwed into the inner thread hole and combined with the body, and an outer thread crest of the bolt passes through the contact area, and contacts and squeezes the thread of the aforementioned fixing screw, deforming the thread of the aforementioned fixing screw A bite force is generated between the bolt and the aforementioned fixing screw along the radial direction.

Description

Locking structure with self-locking internal thread

This creation is a locking structure with self-locking internal thread, especially refers to the fixed screw installed on the edge of the internal thread hole, when the body is combined with the bolt, the thread of the aforementioned fixed screw is deformed and A bite force is generated between the bolt and the aforementioned fixing screw, and the crest of the inner screw hole is still a complete and continuous thread creation.

There are internal and external threads that match each other, such as bolts and nuts, which are mostly used to combine or fix two workpieces. Although bolts and nuts can effectively combine workpieces, when the bolts and nuts are under long-term vibration or When subjected to high loads, bolts and nuts will loosen in unexpected situations, such as when they are tied to vehicles with severe vibration or mechanical processing equipment. Once loosened, it may cause irreparable consequences.

Today there is a Japanese Patent Publication No. JPA-2022122222A "Slow みにくいナット", which combines the nut with the screw, processes a slot on the nut, and then inserts a self-tapping screw into the slot to prevent the nut from loosening . Although the aforementioned proposal can effectively prevent the nut from rotating relative to the screw, when the nut is to be removed, the self-tapping screw needs to be removed first, which is inconvenient to use. Furthermore, when processing the missing groove, the screw body may also be damaged, which is a little inappropriate in practice.

Therefore, there is the Republic of China patent announcement number CN203856854U "Nut for preventing loosening", which provides a nut for preventing loosening, and the nut has a screw hole; at least one groove, along the screw of the nut, The hole is axially arranged on the hole wall of the screw hole; at least one clamping piece is installed in the groove of the nut. In the utility model, at least one clamping part is arranged in the groove of the nut along the axial direction of the nut. When the nut is screwed with the screw/bolt, the clamping part elastically clamps the screw/bolt so that the nut and the Elastic tightness is formed between the screws to prevent the nut from loosening.

Although the above-mentioned previous proposal can be screwed in or out according to the needs, it is convenient to disassemble and assemble, but because the container is set on the wall of the screw hole and completely communicates with the screw hole, it means that some of the screw holes do not have threads and the screw teeth in a discontinuous state.

Furthermore, when the clip is installed in the container, the clip will protrude out of the container, and the screw/bolt is ready to be screwed into the nut. The screw/bolt must first push the clip to the outside of the container and at the same time When screwing in the nut, it is easy to be installed incorrectly and unable to bite.

Therefore, in order to keep the nut itself with a complete thread, and to prevent the clamping piece installed in the groove (that is, the fixing screw in this case) from protruding from the inner diameter of the inner thread, when removing or installing the screw and When the nut body is used, there will be no difficulty in installation or disassembly due to irregular threads, and a locking structure with self-locking internal threads is proposed, which is used with a bolt. The locking structure with self-locking internal threads includes:

A body is provided with an inner thread hole and at least one slot along an axial direction; the inner thread hole has an inner thread bottom diameter and an inner thread inner diameter along a radial direction, and the inner thread bottom diameter A contact area is formed around the inner diameter of the inner thread, the aforementioned container intersects with the contact area to communicate with the inner thread hole, and the groove wall of the container is spaced apart from the inner diameter of the inner thread along the radial direction A distance; at least one fixing screw extends into the aforementioned container and is fixed on the body so that the threads of the aforementioned fixing screw intersect in the contact area, and the hardness of the material of the aforementioned fixing screw is lower than that of the bolt and the body Material hardness; the bolt is screwed into the internal thread hole and combined with the body, an external thread crest of the bolt passes through the contact area, and contacts and squeezes the thread of the aforementioned fixing screw to deform the thread of the aforementioned fixing screw A bite force is generated between the bolt and the aforementioned fixing screw along the radial direction.

Further, the aforementioned holding tank is a round hole, and the outer diameter of the aforementioned fixing screw is larger than the diameter of the round hole, so that the aforementioned fixing screw extends into and tightly fits into the round hole.

Further, the screw thread of the aforementioned fixing screw contacts the inner wall of the circular hole and is extruded and deformed, so that a frictional force is generated between the aforementioned fixing screw and the inner wall of the circular hole.

Further, there are a plurality of slots and a plurality of fixing screws, and each fixing screw extends into each slot, and each slot is arranged around the inner screw hole, and any two adjacent slots are connected by the inner screw hole. The screw hole is an included angle between the centers.

Further, there are six slots and six fixing screws, and the included angle is 60 degrees.

Further, half of the aforesaid cavity intersects with the aforesaid contact area along the radial direction, so that when the outer thread crest of the bolt passes through the contact area, the outer thread crest contacts and presses the aforementioned half along the radial direction. The thread of the fixing screw.

Further, the system is a nut.

Further, the aforementioned fixing screw is a screw or one of the screws.

According to the above-mentioned technical features, the following effects can be achieved:

1. The thread crest of the internal thread hole is still a complete and continuous thread. When the bolt is rotated relative to the body, it is easy to install and disassemble, and can reduce the occurrence of slipping or improper assembly.

2. The edge of the fixed screw installed in the groove will not protrude from the thread crest of the inner screw hole. When the bolt and the body are rotated and combined, the root of the bolt will not contact the fixed screw. Only the thread of the bolt will The summit is in contact with the fixing screw, which can avoid the occurrence of unsmooth assembly.

3. When the occlusal force is insufficient or lost, the position of the locking screw can be changed in the axial direction, or the deformed fixing screw can be replaced directly, and the original body can be retained so that the body can be reused.

Based on the above technical features, the main functions of the locking structure of the invention with self-locking internal threads will be clearly presented in the following embodiments.

Please refer to the first and second drawings. This invention has a locking structure with self-locking internal threads, which is used in conjunction with a bolt 3 . The locking structure with self-locking internal threads includes a body 1 and multiple fixing screws 2 .

Please refer to the third figure and the fourth figure, the body 1 is provided with an internal thread hole 11 and a plurality of receiving grooves 12 along an axial direction D1, and the internal thread hole 11 has an internal thread bottom diameter 111 and a radial direction D2. An inner thread inner diameter 112, and a contact area 113 is formed around the inner thread bottom diameter 111 and the inner thread inner diameter 112, the aforementioned container 12 intersects with the contact area 113 to communicate with the inner thread hole 11, and the groove wall of the containing groove 12 is separated from the internal thread diameter 112 by a distance W2 along the radial direction D2, and the distance W2 is located between the groove wall of the containing groove 12 and the internal thread internal diameter 112 The closest position between; specifically, the body 1 is a nut, the shape is a hexagonal column and has an opposite top surface and a bottom surface along the axial direction D1, and a top surface and a bottom surface between the top surface and the bottom surface On six sides, there are six storage slots 12 arranged along the axial direction D1 and running through the top surface and the bottom surface. The aforementioned storage slots 12 are round holes. The center of the inner screw hole 11 forms an included angle between any two adjacent aforesaid accommodating grooves 12 , and the included angle is 60 degrees. The contact area 113 has a width W1 along the radial direction D2, and the width W1 is an offset from the inner thread bottom diameter 111 to the inner thread inner diameter 112 along the radial direction D2. The distance W2 is between 40% and 60% of the width W1, which means that the groove wall of the aforementioned cavity 12 is cut at the bottom diameter of the inner screw along the radial direction D2 towards the position of the inner diameter 112 of the inner screw. 111 , so that the aforesaid container 12 communicates with the internal thread hole 11 and intersects with the contact area 113 , and an internal thread crest 114 of the internal thread hole 11 is a complete and continuous thread.

Please refer to the third figure, the fourth figure and the fifth figure, the aforementioned fixing screws 2 respectively protrude into the aforementioned container grooves 12 and are fixed on the body 1, so that the threads of the aforementioned fixing screws 2 intersect with the contact area 113, and The material hardness of the aforementioned fixing screw 2 is lower than the material hardness of the bolt 3 and the body 1; specifically, the outer diameter of the aforementioned fixing screw 2 is greater than the aperture of the circular hole, and the length of the aforementioned fixing screw 2 is the diameter of the circle. Half of the depth of the hole, the end of the aforementioned fixing screw 2 is conical or planar and is not limited here, such as a screw or screw, in the present embodiment, the end of the aforementioned fixing screw 2 is in the shape Conical, when the aforementioned fixing screw 2 is inserted into and tightly fitted in the round hole, it is aligned and placed into the round hole through the tapered end, when the thread of the aforementioned fixing screw 2 touches the inside of the round hole When the thread of the aforementioned fixing screw 2 is deformed, a frictional force will be generated between the aforementioned fixing screw 2 and the inner wall of the circular hole, so that the aforementioned fixing screw 2 is fixed on the body 1, The aforementioned fixing screw 2 will not be separated from the body 1 by external force relative to the body 1, so that the aforementioned fixing screw 2 is tightly fitted on the body 1. In this embodiment, two aforementioned fixing screws are included. Part 2, but not limited thereto, can be adjusted according to requirements, for example, it can be adjusted to six, five, four, three or one in conjunction with the size of the vibration when the machine of this creation is used.

Please refer to the third figure, the sixth figure and the seventh figure, when the bolt 3 and the body 1 are fixed through internal and external threads, there is a small gap 4 between the bolt 3 and the internal screw hole 11, thereby The internal and external threads can be easily locked and combined. The above description is the traditional technology of internal and external threads. In this case, by putting the aforementioned fixing screw 2 into the aforementioned container 12, and making the aforementioned fixing screw 2 coincidently intersect with the area of the inner thread root of the inner thread hole 11, when the bolt 3 is screwed into the inner thread When the hole 11 is combined with the body 1, an external thread crest 31 of the bolt 3 passes through the contact area 113, and the external thread crest 31 moves sequentially along the internal thread of the internal thread hole 11, and at the same time Specifically, the outer thread crest 31 of the bolt 3 contacts and squeezes the thread of the aforementioned fixing screw 2 inserted into the aforementioned receptacle 12, wherein about half of the outer thread crest 31 contacts the aforementioned fixing screw 2 The screw thread is the best implementation mode, too much contact will make it difficult for the bolt 3 to screw into the internal thread hole 11, and too little contact will make the bolt 3 screw into the internal thread hole 11 and cannot provide an appropriate contact area. The screw thread of the aforementioned fixing screw 2 produces a deformed part 21, which further makes the deformed part 21 of the aforementioned fixing screw 2 fill up the gap 4 between the bolt 3 and the internal thread hole 11, thereby making the When the main body 1 rotates and moves relative to the bolt 3, that is, when the internal and external threads are locked to each other, in the radial direction D2, between the external thread crest 31 of the bolt 3 and the aforementioned fixing screw 2 via the aforementioned fixing screw The deformed part 21 of the component 2 generates a occlusal force, so that the bolt 3 and the body 1 will not be loosened and disengaged due to external force vibration along the axial direction D1. Specifically, in actual use, the aforementioned fixing screw 2 can generate the aforementioned occlusal force only by being inserted into half the depth of the aforementioned container groove 12 .

Please refer to Figures 8 and 9. When the body 1 is repeatedly disassembled and the bite force is insufficient or lost, the aforementioned fixing screw 2 that has been placed in half the depth can be completely screwed along the axial direction D1. into the aforementioned cavity 12, when the bolt 3 is recombined with the body 1, the thread on the aforementioned fixing screw 2 needs to re-adapt to the outer thread crest 31 of the bolt 3, and be squeezed by the outer thread crest 31 Compression deformation, so that the thread on the aforementioned fixing screw 2 is squeezed to refill the gap 4, whereby, in the radial direction D2, between the outer thread crest 31 of the bolt 3 and the aforementioned fixing screw 2 The occlusal force is regained, so that the bolt 3 and the body 1 will not be loosened and disengaged due to the external vibration along the axial direction D1.

Please refer to the tenth figure and the eleventh figure, the locking structure with self-locking internal thread in this case is not limited to be set on the nut, in another embodiment, it can also be set on a workpiece 1A, on the workpiece 1A It has an internal screw thread hole 11A and a plurality of storage slots 12A in this case, and is combined with a bolt 3A to the workpiece 1A, and its assembly method is the same as the previous embodiment, so it will not be described more, for example, the plurality can also be fixed first. The screw part 2A corresponds to half of the depth of the aforementioned container 12A. When the bolt 3A and the processed workpiece 1A gradually lose the bite force after a long period of use, the aforementioned fixing screw 2A can be completely driven into the aforementioned container. In 12A, the engagement force is regained between the bolt 3A and the aforementioned fixing screw 2A. Thereby, the corresponding bolt 3A locked on the workpiece 1A will not be easily loosened and shaken due to external vibration.

Based on the description of the above embodiments, it is possible to fully understand the operation and use of this creation and the effects of this creation, but the above-mentioned embodiment is only a preferred embodiment of this creation, and should not limit the implementation of this creation. The scope, that is, the simple equivalent changes and modifications made according to the scope of the patent application for this creation and the content of the creation description, all fall within the scope of this creation.

1: Ontology 11,11A: Internal screw holes 111: Bottom diameter of internal thread 112: Inner diameter of internal thread 113: contact area 114: Internal thread tooth crest 12,12A: Tank 1A: Processing the workpiece 2,2A: Fixing screw 21: Deformation Department 3,3A: Bolt 31: External thread tooth crest 4: Clearance W1: width W2: distance D1: Axial D2: Radial

[The first picture] is the three-dimensional appearance picture created by this book.

[Picture 2] An exploded view of this creation.

[The third picture] is the top view of the body of this creation.

[Figure 4] is a three-dimensional sectional view of the body of this creation.

[Picture 5] is a three-dimensional sectional view of this creation.

[Picture 6] is a cross-sectional view of this creation and the bolt occlusion.

[Figure 7] is a partially enlarged picture of Figure 6.

[Picture 8] is a schematic diagram of placing the fixing screw in another position of the body in this creation.

[Picture 9] is a schematic diagram of the appearance of this creation where the fixing screw is placed in another position of the body.

[The tenth figure] is the sectional view of another embodiment of this creation.

[Eleventh figure] is a sectional view of another embodiment of this creation.

1: Ontology

2: Fixing screw

3: Bolt

Claims (8)

A locking structure with self-locking internal thread, used with a bolt, the locking structure with self-locking internal thread includes: A main body is provided with an inner thread hole and at least one slot along an axial direction, the inner thread hole has an inner thread bottom diameter and an inner thread inner diameter along a radial direction, and the inner thread bottom diameter A contact area is formed around the inner diameter of the inner thread, the aforementioned container intersects with the contact area to communicate with the inner thread hole, and the groove wall of the container is spaced apart from the inner diameter of the inner thread along the radial direction a distance; At least one fixing screw protrudes into the aforementioned cavity and is fixed on the body, so that the thread of the aforementioned fixing screw intersects the contact area, and the hardness of the material of the aforementioned fixing screw is lower than that of the bolt and the body; The bolt is screwed into the inner thread hole and combined with the body, and an outer thread crest of the bolt passes through the contact area, and contacts and squeezes the thread of the aforementioned fixing screw, deforming the thread of the aforementioned fixing screw along the A bite force is generated radially between the bolt and the aforementioned fixing screw. The locking structure with self-locking internal thread as described in claim 1, wherein the aforementioned container is a round hole, and the outer diameter of the aforementioned fixing screw is larger than the diameter of the round hole, so that the aforementioned fixing screw can be inserted into and tightly fitted in the hole. The locking structure with self-locking internal thread as described in claim 2, wherein, the thread of the aforementioned fixing screw contacts the inner wall of the circular hole and is extruded and deformed, so that there is a gap between the aforementioned fixing screw and the inner wall of the circular hole There is a friction force between them. The locking structure with self-locking internal thread as described in Claim 1, wherein there are multiple slots and multiple fixing screws, each fixing screw extends into each slot respectively, and each slot surrounds the inner A screw hole is provided, and any two adjacent containing grooves form an angle with the inner screw hole as a center. The locking structure with self-locking internal thread as described in claim 4, wherein there are six slots and six fixing screws, and the included angle is 60 degrees. The locking structure with self-locking internal thread as described in claim 1, wherein half of the aforementioned cavity intersects with the aforementioned contact area along the radial direction, so that when the outer thread crest of the bolt passes through the contact area, Make the crests of the outer thread crests contact half of the radial direction and press the thread of the aforementioned fixing screw. The locking structure with self-locking internal thread as described in claim 1, wherein the body is a nut. The locking structure with self-locking internal thread as described in claim 1, wherein the aforementioned fixing screw is a screw or one of the screws.

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