TWI746350B - Eccentric anti-loosening screw with withdrawal surface and construction method thereof - Google Patents

Abstract

An eccentric anti-loosening screw with a withdrawal surface is composed of a screw with a plurality of positioning teeth on the bottom surface of the screw head. Loose components, and positioning pins that snap into the gap between the withdrawal surfaces of the two locking members; the construction method of the present invention is to insert the screw into the object to be fixed with a hole slightly larger than its diameter, and then apply glue to the two locking components. Prepare to lock on the screw, and then use the locking tool to lock the two fasteners on the screw at the same time, and then rotate the outermost fastener in a clockwise direction separately, and finally drive the positioning pin into the gap between the two fasteners In this way, the present invention can be firmly locked on the object to be fixed and generate maximum friction without loosening, so the present invention has creative and progressive effects.

Description

Eccentric anti-loosening screw with withdrawal surface and construction method thereof

The present invention relates to an anti-loosening screw; more specifically, it particularly refers to an eccentric anti-loosing screw with a withdrawal surface and a construction method thereof.

Generally, when screws and nuts are locked to an object, if the object is stationary, it is unlikely that the screw will loosen. On the contrary, if it is locked to an object that needs to run for a long time and vibrates, it will be caused by the operation of the object. The vibration will be transmitted to the screw at the same time, and the screw will vibrate along with it, and the chance of loosening the screw will be greatly increased.

In view of this, the applicant in this case, based on his years of research and development experience in related fields, conducted in-depth discussions on the aforementioned shortcomings, and actively sought solutions based on the aforementioned needs. After a long period of hard research and multiple tests, the applicant finally completed the invention.

The main purpose of the present invention is to provide an anti-loosening screw that will not loosen due to vibration.

In order to achieve the above objective, the present invention produces two different aspects according to the difference in the design of the anti-loosening component. The first aspect of the present invention has an eccentric anti-loosening screw with a withdrawal surface, which includes a screw, an anti-loosening Loose components and positioning pins.

The screw is composed of a screw head and a screw rod, and the bottom surface of the screw head is provided with a plurality of positioning teeth.

The anti-loosening component is composed of two identical and symmetrical upper and lower locking members, and the locking member is provided with a screw hole through which it can be screwed with the screw and a withdrawal surface, and the withdrawal surface is provided with its own One surface of the screw hole extends outward in a spiral pattern, and the axis of the spiral around the withdrawal surface coincides with the axis of the screw hole, and the thread in the screw hole also extends outward to withdraw. In addition, when the withdrawal surfaces of the two locking members are attached to each other and form an anti-loosening component, a gap is first reserved between the two locking members.

The positioning pin is clamped in the gap between the two locking members.

The first aspect of the construction method of the eccentric anti-loosening screw with withdrawal surface of the present invention is made through the following steps: A. Drilling step: Drill a hole slightly larger than the diameter of the screw screw in the object to be fixed. B. Pre-assembly step: After inserting the screw into the hole, tap the screw with a tool to make the positioning teeth fit into the inner wall of the hole, so that the screw is stuck in the hole and can prevent the screw from rotating. C. Bonding step: stack the two locking components on top of each other to form an anti-loosening component, and when stacking, it is necessary to fit the withdrawal surfaces of the two locking components together, and there will be a gap between the two locking components after this stacking. Then use glue to temporarily fix the two locks. D. Assembly steps: Use a locking tool to screw the two temporarily fixed fasteners on the screw at the same time, and make the top of one of the fasteners fit and lock the bottom surface of the object to be fixed. E. Fixing step: Use the locking tool to rotate the outermost locking member in a clockwise direction to increase the compressive stress between the withdrawal surface, so that the withdrawal surface pushes the two locking members in two different directions, and then the positioning pin Drive into the gap between the two locks to prevent the positioning pins from loosening, and allow the locks to generate longitudinal force and friction on the screw, and achieve the anti-loosening effect.

In addition, the second aspect of the eccentric anti-loosening screw with a withdrawal surface of the present invention includes a screw and an anti-loosing component.

The screw is composed of a screw head and a screw rod, and the bottom surface of the screw head is provided with a plurality of positioning teeth.

The anti-loosening component is composed of two identical and symmetrical upper and lower locking members. The locking member is provided with a threaded hole through which it can be screwed with the screw, and an eccentric surface and a withdrawal surface. The eccentric surface is located in the design There is a screw hole on one of the surfaces, and the withdrawal surface extends from one end of the eccentric surface in a spiral pattern outward to above the other end of the eccentric surface, and the withdrawal surface is wound around the axis of the spiral and the screw The axis of the hole coincides, and the thread in the screw hole also extends outward to the side of the withdrawal surface. In addition, when the withdrawal surfaces of the two fasteners are attached to each other and form an anti-loosening assembly, there will be a gap between the two fasteners. Leave a gap larger than the first aspect.

In addition, the second aspect of the construction method of the eccentric anti-loosening screw with withdrawal surface of the present invention is made through the following steps: A. Drilling step: Drill a hole slightly larger than the diameter of the screw screw in the object to be fixed. B. Pre-assembly step: After inserting the screw into the hole, tap the screw with a tool to make the positioning teeth fit into the inner wall of the hole, so that the screw is stuck in the hole and can prevent the screw from rotating. C. Bonding step: stack the two locks on each other to form an anti-loosening component, and when stacking, you need to fit the withdrawal surfaces of the two locks together, and leave a larger one between the two locks after stacking. Then use glue to temporarily fix the two fasteners. D. Assembly steps: Use a locking tool to screw the two temporarily fixed fasteners on the screw at the same time, and make the top of one of the fasteners fit and lock the bottom surface of the object to be fixed. E. Fixing steps: Use the locking tool to rotate the outermost locking member in a clockwise direction to increase the compressive stress between the withdrawal surface, and make the withdrawal surface push the two locking members in two different directions to make the locking member It produces eccentric force and increases the friction between the locking member and the screw, and thus achieves the effect of preventing loosening.

In order to have a more detailed understanding of the purpose, efficacy, features, and structure of the present invention, preferred embodiments are described below in conjunction with the drawings.

First, please refer to Figure 1 and Figure 2 at the same time.

FIG. 1 is a schematic diagram of the eccentric anti-loosening screw with a withdrawal surface of the present invention in the first aspect, and FIG. 2 is a schematic diagram of the screw in the first aspect.

The first aspect of the eccentric anti-loosening screw 1 with a withdrawal surface of the present invention includes a screw 11, an anti-loosening component 12 and a positioning pin 13.

The screw 11 is composed of a screw head 111 and a screw 112. The bottom surface of the screw head 111 is provided with a plurality of positioning teeth 1121. The width of the bottom surface of the pyramid-shaped positioning teeth 1121 is 0.85 mm.

Please refer to Fig. 3, Fig. 4 and Fig. 5 together with Fig. 1 and Fig. 2.

FIG. 3 is a schematic diagram of the lock member of the first aspect, FIG. 4 is a schematic side view of the lock member of the first aspect, and FIG. 5 is a schematic cross-sectional view of the lock member of the first aspect.

The anti-loosening component 12 is composed of two identical and symmetrical locking members 121, and the locking member 121 is provided with a screw hole 1211 penetrating through and capable of being screwed with the screw rod and a withdrawal surface 1212. The surface 1212 extends outward in a spiral pattern from one of the surfaces provided with the screw hole 1211, and the axis of the spiral around the withdrawal surface 1212 coincides with the axis of the screw hole 1211, and the center of the screw hole 1211 The thread 12111 also extends outward to the side of the withdrawal surface 1212. In addition, when the withdrawal surfaces 1212 of the two locking members 121 are attached to each other to form the anti-loosening component 12, a gap 3 will be reserved between the two locking members 121. .

The positioning pin 13 is clamped in the gap 3 between the two locking members 121.

Please refer to Figures 6 to 9 together with Figures 2 and 3 at the same time.

6 is a schematic diagram of the implementation of the present invention in the first aspect (1), FIG. 7 is a schematic diagram of the implementation of the present invention in the first aspect (2), FIG. 8 is a schematic diagram of the implementation of the present invention in the first aspect (3), FIG. 9 It is a schematic diagram (4) of the implementation of the present invention in the first aspect.

The first aspect of the construction method of the eccentric anti-loosening screw 1 with withdrawal surface of the present invention is made through the following steps: A. Drilling step: Drill a hole 21 with a diameter slightly larger than the diameter of the screw 112 of the screw 11 on the object 2 to be fixed, and the hole 21 has the diameter of the screw 112 plus 1.5 mm, which is the best. B. Pre-assembly step: After inserting the screw 11 into the hole 21, tap the screw head 111 with a tool to make the positioning teeth 1121 fit into the inner wall of the hole 21, so that the screw 11 is stuck in the hole 21 and can prevent the screw 11 from rotating. C. Bonding step: stack the two locks 121 on each other to form the anti-loosening component 12, and when stacking, the withdrawal surfaces 1212 of the two locks 121 need to be attached to each other, and after this one is stacked, the two locks 121 are between A gap 3 will be reserved, and then the two locking members 121 will be temporarily fixed with glue. D. Assembly step: Use the locking tool 4 to screw the two temporarily fixed fasteners 121 onto the screw 112 at the same time, and make the top of one of the fasteners 121 fit and lock the bottom surface of the object 2 to be fixed. E. Fixing step: use the locking tool 4 to rotate the outermost locking member 121 in a clockwise direction to increase the compressive stress between the withdrawal surface 1212, and make the withdrawal surface 1212 push the two locking members 121 in two different directions Squeeze, and then drive the positioning pin 13 into the gap 3 between the two locking members 121, so that the positioning pin 13 prevents the two locking members 121 from loosening, allowing the locking member 121 to generate longitudinal force on the screw 112 and increase the friction force, and thus Achieve the effect of preventing loosening.

Please continue to refer to Figure 10 and Figure 11 in conjunction with Figure 3.

FIG. 10 is a schematic diagram of the work piece used in the present invention for locking, and FIG. 11 is a schematic cross-sectional view of the work piece used in the present invention for locking.

In addition, the locking tool 4 used in the assembly step and the fixing step is composed of a connecting piece 41 for connecting a hand-held electric tool, a movable sleeve 42 that can move on the connecting piece 41, and a surface of the connecting piece 41 for fixing. The movable sleeve 42 is composed of positioning beads 43 at the position of the movable sleeve 42, and the movable sleeve 42 is provided with a groove 421 corresponding to the shape of the locking member 121, and the depth of the groove 421 is sufficient to accommodate two locking members 121, and the groove At the end of the 421, a accommodating hole 411 for extending the screw 112 is also reserved.

In the assembling step, the locking tool 4 pushes the movable sleeve 42 of the locking member 121 forward, so that the depth of the groove 421 can completely accommodate the two locking members 121. In addition, the lock will be locked in the subsequent fixing step. Suppose that the movable sleeve 42 of the tool 4 is pulled back, and the depth of the groove 421 is only enough to accommodate a single locking member 121.

Please refer to Figure 12 in conjunction with Figure 2 for continuation.

Fig. 12 is a schematic diagram of the eccentric anti-loosening screw with withdrawal surface of the present invention in the second aspect.

In addition, the second aspect of the eccentric anti-loosening screw 1 with a withdrawal surface of the present invention includes a screw 11 and an anti-loosening component 14.

The screw 11 is composed of a screw head 111 and a screw 112. The bottom surface of the screw head 111 is provided with a plurality of positioning teeth 1121. The width of the bottom surface of the pyramid-shaped positioning teeth 1121 is 0.85 mm.

Please refer to Figure 13, Figure 14, and Figure 15 together with Figure 2 and Figure 12.

FIG. 13 is a schematic diagram of the locking device in the second aspect, FIG. 14 is a schematic side view of the locking device in the second aspect, and FIG. 15 is a schematic cross-sectional view of the locking device in the second aspect.

The anti-loosening component 14 is composed of two identical and symmetrical locking members 141. The locking member 141 is provided with a screw hole 1411 through which it can be screwed with the screw 112, as well as an eccentric surface 1412 and a withdrawal surface 1413. The eccentric surface 1412 is located on one of the surfaces provided with the screw holes 1411, and the withdrawal surface 1413 extends from one end of the eccentric surface 1412 in a spiral pattern outward to above the other end of the eccentric surface 1412, and The axis of the spiral around the withdrawal surface 1413 coincides with the axis of the screw hole 1411, and the thread 14111 in the screw hole 1411 also extends outward to the side of the withdrawal surface 1413. In addition, when the two locking members 141 are After the withdrawal surfaces 1413 are attached to each other to form the anti-loosening component 14, a gap 3 larger than the first configuration is reserved between the two locking members 141.

Please refer to Fig. 16 to Fig. 19 together with Fig. 2 and Fig. 13 at the same time.

Figure 16 is a schematic diagram of the implementation of the present invention in the second aspect (1), Figure 17 is a schematic diagram of the implementation of the present invention in the second aspect (2), Figure 18 is a schematic diagram of the implementation of the present invention in the second aspect (3), Figure 19 It is a schematic diagram (4) of the implementation of the present invention in the second aspect.

In addition, the second aspect of the construction method of the eccentric anti-loosening screw 1 with withdrawal surface of the present invention is made through the following steps: A. Drilling step: Drill a hole 21 with a diameter slightly larger than the diameter of the screw 112 of the screw 11 on the object 2 to be fixed, and the hole 21 has the diameter of the screw 112 plus 1.5 mm, which is the best. B. Pre-assembly step: After inserting the screw 11 into the hole 21, tap the screw head 111 with a tool to make the positioning teeth 1121 fit into the inner wall of the hole 21, so that the screw 11 is stuck in the hole 21 and can prevent the screw 11 from rotating. C. Bonding step: stack the two locks 141 on each other to form the anti-loosening assembly 14, and when stacking, the withdrawal surfaces 1413 of the two locks 141 must be attached to each other, and after this one is stacked, the two locks 141 are between A larger gap 3 will be reserved, and then the two locking members 141 will be temporarily fixed with glue. D. Assembly step: Use the locking tool 4 to screw the two temporarily fixed fasteners 141 on the screw 112 at the same time, and make the top of one of the fasteners 141 fit and lock the bottom surface of the object 2 to be fixed. E. Fixing step: Use the locking tool 4 to rotate the outermost locking member 141 in a clockwise direction to increase the compressive stress between the withdrawal surface 1413, and make the withdrawal surface 1413 push the two locking members 141 in two different directions The squeezing causes the locking member 141 to generate an eccentric force and increase the friction between the locking member 141 and the screw 112, thereby achieving an anti-loosening effect.

Please refer to Fig. 10 and Fig. 11 in conjunction with Fig. 13 for further reply.

In addition, the locking tool 4 used in the assembly step and the fixing step is composed of a connecting piece 41 for connecting a hand-held electric tool, a movable sleeve 42 that can move on the connecting piece 41, and a surface of the connecting piece 41 for fixing. The movable sleeve 42 is composed of positioning beads 43, and the movable sleeve 42 is provided with a groove 421 corresponding to the shape of the locking member 121, and the depth of the groove 421 is sufficient to accommodate two locking members 141, and the groove At the end of the 421, a accommodating hole 411 for extending the screw 112 is also reserved.

In the assembling step of the locking tool 4, the movable sleeve 42 of the locking tool 4 is pushed forward so that the depth of the groove 421 can completely accommodate the two locking members 141. In addition, the following fixing steps will The movable sleeve 42 of the locking tool 4 is pulled back so that the depth of the groove 421 is only enough to accommodate a single locking member 141.

Therefore, the present invention has excellent advancement and practicability among similar products. At the same time, after searching through domestic and foreign technical documents about this type of structure, it is indeed not found that the same or similar structure exists before the application of this case. Therefore, this case The patent requirements of "creativeness", "applicability to industry" and "progressiveness" should have been met, and an application should be filed in accordance with the law.

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

1: Eccentric anti-loosening screw with withdrawal surface 11: Screw 111: screw head 112: Screw 1121: Positioning teeth 12: Anti-loosening components 121: lock firmware 1211: screw hole 12111: Thread 1212: withdrawal noodles 13: positioning pin 14: Anti-loosening components 141: lock firmware 1411: screw hole 14111: Thread 1412: eccentric surface 1413: withdrawal noodles 2: Object to be fixed 21: Hole 3: gap 4: Locking tool 41: Connector 411: accommodating hole 42: movable sleeve 421: Groove 43: positioning beads

Figure 1: Schematic diagram of the eccentric anti-loosening screw with withdrawal surface of the present invention in the first aspect; Figure 2: Schematic diagram of the screw in the first aspect; Figure 3: Schematic diagram of the lock firmware in the first aspect; Figure 4: A schematic side view of the first aspect of the locking device; Figure 5: A schematic cross-sectional view of the locking member in the first aspect; Figure 6: A schematic diagram of the implementation of the present invention in the first aspect (1); Figure 7: A schematic diagram of the implementation of the present invention in the first aspect (2); Figure 8: A schematic diagram of the implementation of the present invention in the first aspect (3); Figure 9: A schematic diagram of the implementation of the present invention in the first aspect (4); Figure 10: Schematic diagram of locking the workpiece used in the present invention; Figure 11: a schematic cross-sectional view of the workpiece used for locking the present invention; Figure 12: A schematic diagram of the second aspect of the eccentric anti-loosening screw with withdrawal surface of the present invention; Figure 13: Schematic diagram of the lock firmware in the second aspect; Figure 14: A schematic side view of the locking device in the second aspect; Figure 15: A schematic cross-sectional view of the locking device in the second aspect; Figure 16: A schematic diagram of the implementation of the present invention in the second aspect (1); Figure 17: A schematic diagram of the implementation of the present invention in the second aspect (2); Figure 18: A schematic diagram of the implementation of the present invention in the second aspect (3); Figure 19: A schematic diagram of the implementation of the present invention in the second aspect (4).

without.

1: Eccentric anti-loosening screw with withdrawal surface

11: Screw

12: Anti-loosening components

Claims (4)

An eccentric anti-loosening screw with a withdrawal surface, which includes a screw, an anti-loosening component and a positioning pin; the screw is composed of a screw head and a screw rod. The bottom surface of the screw head is provided with a plurality of positioning teeth, and the appearance of the positioning teeth Pyramid shape, and its apex is attached to the screw rod; the anti-loosening component is composed of two identical and symmetrical up and down fasteners, and the fastener is provided with a screw hole that penetrates it and can be screwed with the screw And the withdrawal surface, the withdrawal surface extends outward in a spiral pattern from one of the surfaces provided with the screw hole, and the axis of the spiral around the withdrawal surface coincides with the axis of the screw hole, and the screw The thread in the hole also extends outward to the side of the withdrawal surface. In addition, when the withdrawal surfaces of the two locking members are attached to each other and form an anti-loosening component, a gap will be reserved between the two locking members; the positioning pin The tie is fixed in the gap between the two locking pieces. A construction method using the eccentric anti-loosening screw with withdrawal surface described in claim 1, which is formed through the following steps: A. Drilling step: Drill a hole with a diameter slightly larger than the diameter of the screw screw on the object to be fixed; B. Pre-assembly step: After inserting the screw into the hole, use the tool to tap the screw head to embed the positioning teeth into the inner wall of the hole, so that the screw is stuck in the hole and can prevent the screw from rotating; C. Bonding step: stack the two locks on each other Put together the anti-loosening component, and when stacking, you need to fit the pull-out surfaces of the two locks together. After this one is stacked, a gap will be reserved between the two locks, and then the two locks will be temporarily fixed with glue. D. Assembling steps: Use a locking tool to screw the two temporarily fixed fasteners on the screw at the same time, and make the top of one of the fasteners fit and lock the bottom surface of the object to be fixed; E. Fixing steps: Use the locking tool to rotate the outermost locking member in a clockwise direction to increase the compressive stress between the withdrawal surface, and make the withdrawal surface push the two locking members in two different directions, and then position the The pin is driven into the gap between the two locking members, so that the positioning pin prevents the two locking members from loosening, allowing the locking members to generate longitudinal force and friction force on the screw rod, and thus achieve the anti-loosening effect. An eccentric anti-loosening screw with a withdrawal surface, which includes a screw and an anti-loosing component; the screw is composed of a screw head and a screw rod. The bottom surface of the screw head is provided with a plurality of positioning teeth, and the appearance of the positioning teeth is pyramid-shaped , And its apex is attached to the screw; the anti-loosening component is composed of two identical and symmetrical up and down fasteners. The fastener is provided with a screw hole that penetrates and can be screwed with the screw, as well as an eccentric surface and Withdrawal surface, the eccentric surface is located on one of the faces with screw holes, and the withdrawal surface extends from one end of the eccentric surface in a spiral pattern to above the other end of the eccentric surface, and the withdrawal surface The axis of the screw around the drawing surface coincides with the axis of the screw hole, and the thread in the screw hole also extends outward to the side of the drawing surface. In addition, when the drawing surfaces of the two locking members are attached to each other and form a guard After loosening the components, a gap will be reserved between the two locking pieces. A construction method using the eccentric anti-loosening screw with withdrawal surface described in claim 3, which is formed through the following steps: A. Drilling step: Drill a hole slightly larger than the diameter of the screw screw on the object to be fixed; B. Pre-assembly steps: After inserting the screw into the hole, use the tool to hit the screw head to make the positioning teeth embedded in the inner wall of the hole, so that the screw is stuck in the hole and can prevent the screw from rotating; C. Bonding step: stack the two locking members on top of each other to form an anti-loosening component, and when stacking, the withdrawal surfaces of the two locking members need to be attached, and after this stacking, a gap will be reserved between the two locking members. Then use glue to temporarily fix the two fasteners; D. Assembly steps: use a locking tool to screw the two temporarily fixed fasteners on the screw at the same time, and make the top of one of the fasteners fit the bottom surface of the object to be fixed. Locking; E. Fixing steps: Use the locking tool to rotate the outermost locking member in a clockwise direction to increase the friction between the withdrawal surfaces, and make the withdrawal surface push the two locking members in two opposite directions, Let the lock piece itself generate eccentric force and increase the friction between the lock piece and the screw, so as to achieve the effect of anti-loosening.

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