Bolt and nut locking device

Abstract

The utility model discloses a bolt and nut locking device which comprises a bolt, the outer surface of the bolt is sleeved with a flange, a nut is arranged below the flange, and a locking mechanism is arranged below the nut. The locking mechanism comprises a plurality of lock sleeves, hexagonal through openings, a bottom plate, a hexagonal connecting plate, a pointed tooth ring, a rubber head and a mounting groove, the hexagonal through openings are located in the middles of the upper end faces of the lock sleeves correspondingly, and the shape of the inner walls of the hexagonal through openings is the same as that of the outer surface of a nut; the hexagonal connecting plate is fixed to the middle of the upper end face of the bottom plate, the shape of the hexagonal connecting plate is the same as that of the inner wall of the hexagonal through opening, and the pointed-end tooth ring is fixed to the middle of the upper end face of the hexagonal connecting plate. The nut can be fixedly locked and prevented from rotating, so that the stability between the bolt and the nut is improved, and looseness between the bolt and the nut is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to bolt nut technical field, specifically is a bolt nut locking device. BACKGROUND

[0002] The nut is the cap, and is screwed together with the bolt or the screw rod to be used to play the fastening role part, all production and manufacture machinery must use a kind of element;

[0003] The nut is various, and the common nut of national standard, British standard, American standard, Japanese standard is divided into carbon steel, high strength, stainless steel, plastic steel according to the different materials several types.According to the different standard numbers of product properties, it is divided into ordinary, non-standard, (old) national standard, new national standard, American system, British system, German standard.

[0004] But along with the increase of use time, the connection between bolt and nut can be loose due to the influence of external environment, and its stability is low;Therefore, it does not meet the existing demand, and for this, we propose a bolt nut locking device. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of bolt nut locking device to solve the problem that along with the increase of use time, the connection between bolt and nut can be loose due to the influence of external environment, and its stability is low etc.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of bolt nut locking device, including bolt, the outer surface of the bolt is equipped with flange, the lower portion of the flange is equipped with nut, the lower portion of the nut is equipped with locking mechanism, the locking mechanism includes multiple lock sleeve, the same number of hexagonal through hole as lock sleeve, a bottom plate, hexagonal connecting plate, sharp tooth ring, rubber head and installation groove, multiple the hexagonal through hole is located at the intermediate position of the upper end surface of multiple lock sleeve, and the shape of the hexagonal through hole inner wall is same with the shape of nut outer surface;

[0007] The hexagonal connecting plate is fixed on the intermediate position of bottom plate upper end surface, the shape of the hexagonal connecting plate is same with the shape of hexagonal through hole inner wall, and the sharp tooth ring is fixed on the intermediate position of hexagonal connecting plate upper end surface;

[0008] The installation groove is located at the intermediate position of bolt lower end surface, the rubber head is fixed in the inside of installation groove, and the position of installation groove corresponds with the position of sharp tooth ring.

[0009] Preferably, a circle of connecting groove A is fixed on the outside of the upper end surface of the lock sleeve, a circle of connecting head is fixed on the outside of the lower end surface of the lock sleeve, and the position and number of the connecting groove A and the connecting head correspond with each other.

[0010] Preferably, the outer side of the bottom plate upper end surface is fixedly provided with a ring of connecting grooves B, and the positions and number of the connecting grooves B correspond to those of the connecting grooves A.

[0011] Preferably, the bottom plate lower end surface is provided with a fixed through hole penetrating through the bottom plate and the hexagonal connecting plate, and a fixing screw is arranged below the fixed through hole.

[0012] Preferably, the cross section shape of the top end portion of the pointed tooth ring is conical, and the outer diameter of the pointed tooth ring is the same as that of the rubber head bottom end portion.

[0013] Preferably, the cross section shape of the middle end portion of the rubber head is square, the shape of the inner wall of the mounting groove corresponds to that of the outer surface of the rubber head, and the outer surface of the rubber head is fitted with the inner wall of the mounting groove.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] 1. After the nut is fixed to the outer surface of the bolt to fix the flange, a lock sleeve is picked up, the lock sleeve is sleeved to the outer surface of the nut through the hexagonal through hole on the outer surface of the lock sleeve, then a plurality of lock sleeves are connected through the connecting grooves A and the connecting heads at the lower end surface of the lock sleeve until the lower end surface of the lowermost lock sleeve is lower than the lower end surface of the bolt, then the bottom plate is picked up, the hexagonal connecting plate on the bottom plate is aligned with the hexagonal through hole on the outer surface of the lowermost lock sleeve and is fitted with the hexagonal through hole, then the bottom plate is fixed with the rubber head fixed to the lower end surface of the bolt through the mounting groove by using the fixing screw, when the bottom plate is fixed, the plurality of lock sleeves connected therewith will be locked and cannot rotate, and since the outer surface of the nut is fitted with the inner part of the hexagonal through hole of the lock sleeve which cannot rotate, the nut cannot rotate at this time, the nut can be fixed by the above technical solution, the rotation of the nut is prevented, and the stability between the bolt and the nut is improved.

[0016] 2. The cross section shape of the middle end portion of the rubber head is square, and the shape of the inner wall of the mounting groove corresponds to that of the outer surface of the rubber head, the mounting groove corresponding to the shape of the outer surface of the rubber head can increase the force required when the rubber head rotates, the rubber head can be prevented from rotating by the above technical solution, the nut is indirectly driven to rotate, and finally the bolt and the nut are fixed and loosened. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is a structural schematic view of the utility model as a whole.

[0018] Fig. 2The overall structure of the utility model is shown in the bottom view.

[0019] Fig. 3 The overall structure of the utility model is shown in the side view.

[0020] Fig. 4 The overall structure of the utility model is shown in the front view.

[0021] In the figure: 1, bolt; 2, flange; 3, nut; 4, lock sleeve; 5, connecting groove A; 6, hexagonal through hole; 7, connecting head; 8, bottom plate; 9, connecting groove B; 10, hexagonal connecting plate; 11, pointed tooth ring; 12, rubber head; 13, fixing through hole; 14, fixing screw; 15, mounting groove. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0023] The bolt 1 (model number M27), rubber head 12 (model number TK-36mm) and lock sleeve 4 (model number 304) mentioned in the utility model can be obtained by market purchase or private customization.

[0024] Please refer to Figs. 1 to 4 The utility model provides an embodiment: a bolt nut locking device, including bolt 1, the outer surface of bolt 1 is equipped with flange 2, the lower portion of flange 2 is equipped with nut 3, the lower portion of nut 3 is equipped with locking mechanism, locking mechanism includes multiple lock sleeves 4, the same number of hexagonal through holes 6 as lock sleeve 4, a bottom plate 8, a hexagonal connecting plate 10, a pointed tooth ring 11, a rubber head 12 and a mounting groove 15, multiple hexagonal through holes 6 are respectively located in the middle position of the upper end surface of multiple lock sleeves 4, and the shape of the inner wall of hexagonal through hole 6 is same with the shape of the outer surface of nut 3;

[0025] The hexagonal connecting plate 10 is fixed to the middle position of the upper end surface of the bottom plate 8, and the shape of the hexagonal connecting plate 10 is same with the shape of the inner wall of the hexagonal through hole 6, and the pointed tooth ring 11 is fixed to the middle position of the upper end surface of the hexagonal connecting plate 10;

[0026] The mounting groove 15 is located in the middle position of the lower end surface of the bolt 1, the rubber head 12 is fixed to the inside of the mounting groove 15, and the position of the mounting groove 15 corresponds to the position of the pointed tooth ring 11.

[0027] The outer side of the upper end surface of the lock sleeve 4 is fixedly provided with a ring of connecting grooves A5, and the outer side of the lower end surface of the lock sleeve 4 is fixedly provided with a ring of connecting heads 7, and the positions and numbers of the connecting grooves A5 and the connecting heads 7 correspond to each other; when the bolt 1 and the nut 3 need to be used, the bolt 1 is passed through the flange 2 and the nut 3 is sleeved to the outer surface of the bolt 1, then one lock sleeve 4 is picked up, the lock sleeve 4 is sleeved to the outer surface of the nut 3 through the hexagonal through hole 6 located on the outer surface of the lock sleeve 4, then another lock sleeve 4 is picked up, the connecting grooves A5 located on the upper end surface of the lock sleeve 4 are aligned with the connecting heads 7 located on the lower end surface of the lock sleeve 4 which is sleeved to the outer surface of the nut 3, then the two are connected, and the connecting grooves A5 and the connecting heads 7 located on the outer surface of the lock sleeve 4 can connect the plurality of lock sleeves 4.

[0028] The outer side of the upper end surface of the bottom plate 8 is fixedly provided with a ring of connecting grooves B9, and the positions and numbers of the connecting grooves B9 and the connecting grooves A5 correspond to each other; the plurality of lock sleeves 4 are connected through the connecting grooves A5 and the connecting heads 7, when the lower end surface of the lock sleeve 4 located at the lowermost position is lower than the lower end surface of the bolt 1, the bottom plate 8 is picked up, the connecting grooves B9 located on the upper end surface of the bottom plate 8 are aligned with the connecting heads 7 located on the lower end surface of the lock sleeve 4 located at the lowermost position, then the two are connected, and in the process of installing the bottom plate 8, the hexagonal connecting plate 10 fixed to the upper end surface of the bottom plate 8 also enters the inside of the hexagonal through hole 6 located on the lock sleeve 4 located at the lowermost position, so as to increase the stability between the lock sleeve 4 and the bottom plate 8;

[0029] In the process of deepening into the hexagonal through hole 6, the pointed tooth ring 11 fixed to the upper end surface of the hexagonal connecting plate 10 will contact the rubber head 12 installed on the lower end surface of the bolt 1 through the installation groove 15, because the rubber head 12 is integrally made of rubber and has a certain elasticity, when the two are in contact, the shape of the lower end surface of the rubber head 12 will change to a shape corresponding to the shape of the outer surface of the pointed tooth ring 11, the pointed tooth ring 11 can fill the gap between the rubber head 12 and the hexagonal connecting plate 10, and the friction between the two can fix the rubber head 12 to a certain extent to prevent it from rotating.

[0030] The lower end surface of the bottom plate 8 is provided with a fixing through hole 13 penetrating through the bottom plate 8 and the hexagonal connecting plate 10 on both sides, and a fixing screw 14 is arranged below the fixing through hole 13; when the bottom plate 8 is connected, the top end of the fixing screw 14 is inserted into the inside of the fixing through hole 13, then the fixing screw 14 is rotated, and with the rotation of the fixing screw 14, the fixing screw 14 will continuously insert into the inside of the rubber head 12; when the fixing screw 14 cannot continue to insert into the inside of the rubber head 12, the bottom plate 8 is fixed, and when the bottom plate 8 is fixed, the plurality of lock sleeves 4 connected thereto will be locked and cannot rotate, and since the outer surface of the nut 3 is in contact with the inside of the hexagonal through hole 6 of the lock sleeve 4 which cannot rotate, the nut 3 cannot rotate at this time, the nut 3 can be fixed by the above technical solution, and rotation of the nut 3 is prevented, so that the stability between the bolt 1 and the nut 3 is improved.

[0031] The cross section shape of the top end of the tooth on the pointed tooth ring 11 is conical, and the outer diameter of the pointed tooth ring 11 is the same as the outer diameter of the bottom end of the rubber head 12; the pointed tooth ring 11 with the conical tooth head at the top end can make the tooth on the pointed tooth ring 11 more deeply insert into the inside of the rubber head 12, so as to increase the friction between the two.

[0032] The cross section shape of the middle end of the rubber head 12 is square, the shape of the inner wall of the mounting groove 15 corresponds to the shape of the outer surface of the rubber head 12, and the outer surface of the rubber head 12 is in contact with the inner wall of the mounting groove 15; the mounting groove 15 corresponding to the shape of the outer surface of the rubber head 12 can increase the force required for rotating the rubber head 12, and the above technical solution can prevent the rubber head 12 from rotating, so as to indirectly drive the nut 3 to rotate, and finally cause the bolt 1 and the nut 3 to be loose.

[0033] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims.

Claims

1. A bolt and nut locking device comprising a bolt (1), characterized in that: The outer surface of the bolt (1) is sleeved with a flange (2), the lower side of the flange (2) is provided with a nut (3), the lower side of the nut (3) is provided with a locking mechanism, the locking mechanism comprises a plurality of lock sleeves (4), a plurality of hexagonal through holes (6) with the same number of lock sleeves (4), a bottom plate (8), a hexagonal connecting plate (10), a pointed tooth ring (11), a rubber head (12) and a mounting groove (15), the plurality of hexagonal through holes (6) are respectively located at the middle positions of the upper end surfaces of the plurality of lock sleeves (4), and the shape of the inner wall of the hexagonal through hole (6) is the same as that of the outer surface of the nut (3); The hexagonal connecting plate (10) is fixed to the middle position of the upper end surface of the bottom plate (8), the shape of the hexagonal connecting plate (10) is the same as that of the inner wall of the hexagonal through hole (6), and the pointed tooth ring (11) is fixed to the middle position of the upper end surface of the hexagonal connecting plate (10); The mounting groove (15) is located at the middle position of the lower end surface of the bolt (1), the rubber head (12) is fixed to the inside of the mounting groove (15), and the position of the mounting groove (15) corresponds to the position of the pointed tooth ring (11).

2. A bolt and nut locking device as claimed in claim 1, wherein: A connecting groove A (5) is fixedly arranged on the outer side of the upper end surface of the lock sleeve (4), a connecting head (7) is fixedly arranged on the outer side of the lower end surface of the lock sleeve (4), and the positions and numbers of the connecting groove A (5) and the connecting head (7) correspond to each other.

3. A bolt and nut locking device as claimed in claim 2, wherein: A connecting groove B (9) is fixedly arranged on the outer side of the upper end surface of the bottom plate (8), and the positions and numbers of the connecting groove B (9) and the connecting groove A (5) correspond to each other.

4. A bolt and nut locking device as claimed in claim 3, wherein: The lower end surface of the bottom plate (8) is provided with a fixing through hole (13) penetrating through the bottom plate (8) and the hexagonal connecting plate (10) on both sides, and the lower side of the fixing through hole (13) is provided with a fixing screw (14).

5. A bolt and nut locking device as claimed in claim 1, wherein: The cross-sectional shape of the upper tooth head end of the pointed tooth ring (11) is conical, and the outer diameter of the pointed tooth ring (11) is the same as the outer diameter of the bottom end of the rubber head (12).

6. A bolt and nut locking device as claimed in claim 1, wherein: The middle end of the rubber head (12) is square in cross-section, the shape of the inner wall of the mounting groove (15) corresponds to the shape of the outer surface of the rubber head (12), and the outer surface of the rubber head (12) is fitted with the inner wall of the mounting groove (15).

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