Precise anti-loosening nut

Abstract

The utility model discloses a precise anti-loosening nut, which relates to the technical field of anti-loosening nuts and comprises a nut body, an internal thread is arranged at the bottom end of the inner side wall of the nut body, a through groove is formed in the middle of the top end of the nut body in a penetrating manner, a groove is formed in the middle of the outer side wall of the nut body, and an inserting groove is formed in the bottom of the groove in a penetrating manner. A distance expanding pin is arranged in the inserting groove and is of a conical structure. The groove is formed in the outer side wall of the nut body, the inserting groove of the conical structure is formed in the groove bottom of the groove, the distance expanding pin is arranged in the inserting groove, and after the nut body is fastened, the distance expanding pin is extruded by the adjusting bolt by rotating the adjusting bolt in the groove, so that the distance expanding pin is inserted into the inserting groove of the conical structure; and the distance expanding pin enables the thread in the nut body to change the distance by extruding the slot, so that the effect of locking the position between the nut body and the product is achieved, and the effect of preventing the nut body from loosening can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of locknut, especially to a precision anti-loose nut. BACKGROUND

[0002] Nut, i. e. nut, and screw rod or bolt are screwed together to be used as parts for fastening effect, with the high -speed development of modern industry, bolt and nut also become one of indispensable accessories in various mechanical equipment, to connect firmly each part of equipment, make equipment normal operation, but the existing nut is easy to produce loose in the machine working process due to vibration and other external force, leading to machine failure, influence work progress, and the existing nut has no protection measure, is easy to be influenced by external environment, and rainwater and dust long -term erosion can lead to nut damage, difficult to maintain the normal function of nut.

[0003] Such as the anti-loose precision locking nut of CN216241759U, including main nut, the top front and back both ends of main nut are fixedly provided with nut hole, the both sides of the top of main nut are fixedly provided with connecting hole, the top end of main nut is fixedly provided with nut hole, the outside of nut hole is fixedly provided with nut thread, the side wall of main nut is provided with four recesses symmetrically, and the top of two recesses on the same side is fixedly provided with elastic change groove, in the utility model, by being provided with elastic change groove, fixed elastic sheet is arranged in elastic change groove, nut is screwed into nut hole, two parts of nut are close to elastic change groove and thus extrude fixed elastic sheet, so that the main shaft assembled in the center of nut can be clamped, and by being provided with connecting hole, nut thread can be clamped in the connecting hole of next nut after passing through the rear side of main nut, so that multiple nuts can be fixed.

[0004] The above technical scheme has some problems in actual application, the anti-loose effect of the technical scheme is limited in actual application, and it is not conducive to use on precision equipment.

[0005] Therefore, it is necessary to invent a precision anti-loose nut to solve the above problems. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a precision anti-loose nut to solve the problems in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a precision anti-loosening nut, comprising a nut body, an internal thread is provided at the bottom end of the inner side wall of the nut body, a through groove is provided through the middle part of the top end of the nut body, a groove is provided in the middle part of the outer side wall of the nut body, a slot is provided through the bottom of the groove, and the slot is arranged into a conical structure, an expansion pin is provided inside the slot, the expansion pin is arranged into a conical structure, and one end of the expansion pin extends to the inner wall of the internal thread, an adjusting bolt is provided inside the groove, the adjusting bolt and the groove are connected by threads, a hexagonal groove is provided in the middle part of the outer side wall of the adjusting bolt, an annular mounting groove is provided at the bottom end of the inner side wall of the nut body, and an annular rubber ring is provided inside the mounting groove.

[0008] Preferably, an extension groove of an annular structure is provided at the bottom end of the nut body, and the cross-section of the extension groove is set to a "┍"-shaped structure.

[0009] Preferably, a rubber ring is inserted into the interior of the extension groove, and a positioning ring is provided at the top end of the inner side wall of the rubber ring.

[0010] Preferably, the cross section of the positioning ring is configured as a semicircular structure.

[0011] Preferably, an anti-slip pad is fixedly provided at the bottom end of the rubber ring, and the anti-slip pad is provided in an annular structure.

[0012] Preferably, a plurality of anti-slip grooves are provided on the lower surface of the anti-slip pad, the anti-slip grooves are arranged in an inclined structure, and the plurality of anti-slip grooves are arranged in a surrounding manner.

[0013] The technical effects and advantages of this utility model are:

[0014] 1. The utility model provides a groove on the outer wall of the nut body, and a conical slot is provided at the bottom of the groove. An expansion pin is provided inside the slot. After the nut body is tightened, the adjusting bolt inside the groove is rotated to squeeze the expansion pin, so that the expansion pin is inserted into the conical slot. The expansion pin squeezes the slot to change the pitch of the thread inside the nut body, thereby locking the position between the nut body and the product, thereby preventing the nut body from loosening.

[0015] 2. The utility model provides a rubber ring at the bottom end of the nut body, and an anti-slip pad is provided at the bottom end of the rubber ring. When the nut body is installed, the anti-slip pad can contact the product. By providing multiple anti-slip grooves on the lower surface of the anti-slip pad, the setting of the anti-slip grooves can increase the friction between the anti-slip pad and the product, thereby achieving the effect of improving the anti-loosening performance of the nut body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is the whole structure schematic view of the utility model.

[0017] Figure 2 It is the whole structure bottom view schematic view of the utility model.

[0018] Figure 3 It is the whole structure section view schematic view of the utility model.

[0019] Figure 4 It is the anti-skid pad structure schematic view of the utility model.

[0020] In the figure: 1, nut body;2, internal thread;3, through slot;4, recess;5, insertion slot;6, distance expansion pin;7, adjusting bolt;8, hexagonal groove;9, installation groove;10, rubber ring;11, extension groove;12, rubber ring;13, positioning ring;14, anti-skid pad;15, anti-skid groove. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the utility model.

[0022] The utility model provides a kind of precision anti-loose nut as shown in Figures 1-4 The utility model discloses a kind of precision anti-loose nuts, including nut body 1, the inner side wall bottom end of nut body 1 is provided with internal thread 2, the top end middle part of nut body 1 is throughly provided with through slot 3, the outer side wall middle part of nut body 1 is provided with recess 4, the slot bottom of recess 4 is throughly provided with insertion slot 5, and insertion slot 5 is set as tapered structure, the inside of insertion slot 5 is provided with distance expansion pin 6, distance expansion pin 6 is set as tapered structure, and the inner wall of internal thread 2 is extended to one end of distance expansion pin 6, the inside of recess 4 is provided with adjusting bolt 7, adjusting bolt 7 and recess 4 are connected by thread, the outer side wall middle part of adjusting bolt 7 is provided with hexagonal groove 8, hexagonal groove 8 can be cooperated with hexagonal bolt, to realize the driving of adjusting bolt 7;

[0023] Specifically, the inner side wall bottom end of the nut body 1 is provided with an annular mounting groove 9, the inner part of the mounting groove 9 is provided with an annular rubber ring 10, the bottom end of the nut body 1 is provided with an annular extension groove 11, the cross section of the extension groove 11 is provided with a "┍" shaped structure, the inner part of the extension groove 11 is provided with a rubber ring 12, the inner side wall top end of the rubber ring 12 is provided with a positioning ring 13, the cross section of the positioning ring 13 is provided with a semicircular structure, the bottom end of the rubber ring 12 is fixedly provided with an anti-skid pad 14, and the anti-skid pad 14 is provided with an annular structure, and the positioning ring 13 can be attached to the inner wall of the extension groove 11 to achieve the purpose of improving the anti-skid effect between the anti-skid pad 14 and the nut body 1.

[0024] More specifically, the lower surface of the anti-skid pad 14 is provided with a plurality of anti-skid grooves 15, the anti-skid grooves 15 are provided with an inclined structure, and the plurality of anti-skid grooves 15 are provided in a surrounding manner, and the inclined structure enables the anti-skid grooves 15 to have a larger contact surface, thereby achieving the effect of improving the friction between the anti-skid pad 14 and the product.

[0025] The working principle of the utility model:

[0026] The utility model discloses a recess 4 is set up on the outside wall of nut body 1, the slot bottom of recess 4 is provided with the plug-in groove 5 of taper structure, the inner part of plug-in groove 5 is provided with the expansion pin 6, after the fastening of nut body 1, by rotating the adjusting bolt 7 in the recess 4, the expansion pin 6 is inserted into the plug-in groove 5 of taper structure by adjusting bolt 7 extruding expansion pin 6, and the expansion pin 6 makes the thread in the nut body 1 change pitch by extruding plug-in groove 5, to achieve the effect of locking the position between nut body 1 and product, so that the effect of placing nut body 1 loosening can be achieved, the bottom end of rubber ring 12 is provided with anti-skid pad 14, and the anti-skid pad 14 can contact the product when nut body 1 is installed, a plurality of anti-skid grooves 15 are set up on the lower surface of anti-skid pad 14, the setting of anti-skid groove 15 can improve the friction between anti-skid pad 14 and product, to achieve the effect of improving the loosening performance of nut body 1.

[0027] Finally, it should be pointed out that: the above-mentioned only for the preferred embodiment of the utility model and does not limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or make equivalent replacement to part of technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A precision anti-loosening nut, comprising a nut body (1), characterized in that: The bottom end of the inner wall of the nut body (1) is provided with an internal thread (2), a through groove (3) is provided through the middle of the top end of the nut body (1), a groove (4) is provided in the middle of the outer wall of the nut body (1), a slot (5) is provided through the bottom of the groove (4), and the slot (5) is set as a conical structure, an expansion pin (6) is provided inside the slot (5), the expansion pin (6) is set as a conical structure, and one end of the expansion pin (6) extends to the inner wall of the internal thread (2), an adjusting bolt (7) is provided inside the groove (4), the adjusting bolt (7) is connected to the groove (4) by a thread, a hexagonal groove (8) is provided in the middle of the outer wall of the adjusting bolt (7), an annular mounting groove (9) is provided at the bottom end of the inner wall of the nut body (1), and an annular rubber ring (10) is provided inside the mounting groove (9).

2. A precision anti-loosening nut according to claim 1, characterized in that: An annular extension groove (11) is provided at the bottom end of the nut body (1), and the cross section of the extension groove (11) is configured as a "┍"-shaped structure.

3. The precision anti-loosening nut according to claim 2, characterized in that: A rubber ring (12) is inserted into the interior of the extension groove (11), and a positioning ring (13) is provided at the top end of the inner side wall of the rubber ring (12).

4. A precision anti-loosening nut according to claim 3, characterized in that: The cross section of the positioning ring (13) is arranged to be a semicircular structure.

5. The precision anti-loosening nut according to claim 4, characterized in that: An anti-skid pad (14) is fixedly provided at the bottom end of the rubber ring (12), and the anti-skid pad (14) is provided in an annular structure.

6. The precision anti-loosening nut according to claim 5, characterized in that: The lower surface of the anti-slip pad (14) is provided with a plurality of anti-slip grooves (15), the anti-slip grooves (15) are arranged in an inclined structure, and the plurality of anti-slip grooves (15) are arranged in a surrounding manner.

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