A locking bolt and its matching locking kit

Abstract

The present application discloses a locking bolt and a matching locking kit thereof, comprising a bolt portion and a nut portion, the bolt portion is cylindrical, comprising a pair of side plates and a middle plate; the nut portion comprises a main body portion, a lower through groove, a movable portion and an inner hexagonal groove; a plurality of protrusions are symmetrically distributed at both ends of the top surface of the lower through groove; an upper through groove is arranged at the top end of the movable portion, extends along its length direction, and is through-through at both ends, and there is a 2° angle between adjacent side walls of a pair of side plates and between opposite side walls of the middle plate. In daily use, the nut portion and the bolt portion are rotated by cooperating with the inner hexagonal groove through an inner hexagonal wrench to tighten the bolt portion and the external threaded blind hole, and then an external rod body is inserted into the lower through groove and the upper through groove to lift the bolt portion and the pair of side plates upward, the nut portion and the middle plate are pressed downward, and the threads on the pair of side plates and the threads on the middle plate move in opposite directions, so that they can be locked with the external threaded blind hole.

Description

Technical Field

[0001] The invention relates to a locking bolt and a matching locking set. Background Art

[0002] Ordinary bolts generally do not have a self-locking function and can basically meet the use requirements in general occasions. However, when used in some occasions with large vibrations, the bolts may become loose due to vibration. To solve this problem, a Chinese invention patent with the publication number CN112160962A, "A Self-locking Bolt Assembly", has appeared. It includes a bolt, a cap nut, a pair of expansion blocks and a pair of conical sockets. When in use, the expansion block is placed at the bottom of the connected part / inside the cap nut, and the bolt / cap nut is rotated. The expansion block presses the conical socket to make the end of the bolt expand outward and lock with the threaded blind hole on the fastener / cap nut. However, it has the following defects:

[0003] As the bolt / cap nut rotates, the end of the bolt gradually expands with the cooperation of the conical socket and the tension block, resulting in greater resistance to the bolt / cap nut in the final stage of tightening, severe wear between the internal and external threads, and affecting the service life of the bolt, cap nut and threaded blind hole. Summary of the invention

[0004] The present invention aims to solve one of the technical problems existing in the prior art.

[0005] The present application provides a locking bolt, comprising a screw portion and a bolt head:

[0006] The screw part is cylindrical and includes a pair of side plates and a middle plate;

[0007] The bolt head comprises a main body, a lower through groove, a movable part and a hexagonal groove;

[0008] The movable part is fixedly connected to the middle plate and can be lifted and slid in the lower through groove. A pair of side plates are fixedly connected to both sides of the bottom surface of the main body. The hexagonal grooves are arranged on the main body and the movable part.

[0009] There is an angle of 2° between adjacent side walls of a pair of side panels and between opposite side walls of the middle panel.

[0010] The bolt head also includes:

[0011] A plurality of protrusions are symmetrically distributed on both ends of the top surface of the lower through groove.

[0012] The bolt head also includes:

[0013] The upper through groove is arranged at the top of the movable part, extends along the length direction thereof, and is connected at both ends.

[0014] A mating locking kit, comprising:

[0015] A locking sleeve, which is rotatably sleeved on the outside of the main body;

[0016] A pair of sliding grooves are symmetrically arranged on the outer wall of the main body and are respectively connected to the two ends of the lower through groove;

[0017] A pair of slide plates are symmetrically fixed to the inner peripheral wall of the locking sleeve and can slide between the corresponding sliding grooves and the two ends of the lower through groove.

[0018] Also includes:

[0019] A pair of guide grooves are symmetrically arranged at two ends of the top surface of the movable part;

[0020] Wherein, both left and right sides of the bottom surface of a pair of guide grooves are inclined.

[0021] The slide also includes:

[0022] A side groove is provided on the outer peripheral wall of the main body and has a top end that penetrates through;

[0023] The lower arc groove is arranged in the middle of the outer peripheral wall of the main body, one end of which is connected with the lower end of the side groove, and the other end of which extends in the tightening direction of the bolt head to be connected with the end of the lower through groove.

[0024] Also includes:

[0025] An anti-loosening washer is sleeved on the outside of the screw;

[0026] A plurality of tightening blocks are arranged in a ring shape and fixedly connected to the bottom surface of the anti-loosening washer.

[0027] The clamping block includes:

[0028] Connecting surfaces, facades and inclined surfaces connected end to end in a clockwise direction;

[0029] The connecting surface is fixedly connected to the bottom surface of the anti-loosening washer, and the inclined surface faces the tightening direction of the screw part.

[0030] Also includes:

[0031] A plurality of blind holes are arranged at intervals on the bottom surface of the main body;

[0032] A plurality of insert rods are fixedly connected to the top surface of the anti-loosening washer, and the upper ends thereof can be slidably inserted in the corresponding blind holes.

[0033] The beneficial effects of the present invention are as follows:

[0034] 1. A pair of side plates, a middle plate, a main body, a lower through groove, a movable part and an upper through groove are arranged. After the screw part composed of the middle plate and a pair of side plates is tightened with the threaded blind hole on the external connecting piece, an external rod body is extended into the lower through groove and the upper through groove to open the main body and the movable part, so that the screw part is pressed again with the external threaded blind hole after completing the rotation, thereby reducing friction loss and increasing service life;

[0035] 2. Through the cooperation of the locking sleeve, a pair of sliding grooves, a pair of slide plates and a number of protrusions, the main body and the movable part can be moved away from each other by simply rotating the locking sleeve, thereby achieving the locking of the screw part and the external threaded blind hole;

[0036] 3. Through the cooperation of anti-loosening washers, a plurality of tightening blocks, a plurality of blind holes and a plurality of plug rods, when the movable part is separated from the main body, pressure is applied to the anti-loosening washers so that the lower ends of the tightening blocks sink into the surface of the external connecting parts, further locking the screw part so that it cannot rotate. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A three-dimensional diagram of a locking bolt and its matching locking kit in an embodiment of the present application;

[0038] Figure 2 This is a front view of a locking bolt and its matching locking kit in an embodiment of the present application;

[0039] Figure 3 for Figure 2 Schematic diagram of the cross-section structure in the AA direction;

[0040] Figure 4 for Figure 2 Schematic diagram of the cross-section structure in the middle BB direction;

[0041] Figure 5 This is a schematic diagram of the three-dimensional structure of the locking sleeve in the embodiment of the present application;

[0042] Figure 6 It is a three-dimensional diagram of the connection structure between a pair of side panels and the movable part in the embodiment of the present application;

[0043] Figure 7 A three-dimensional diagram of the connection structure between the middle plate and the movable part in the embodiment of the present application;

[0044] Figure 8 This is a three-dimensional diagram of the anti-loosening washer structure in an embodiment of the present application.

[0045] Reference numerals

[0046] 1-screw part, 11-side plate, 12-middle plate, 2-bolt head, 21-main body, 22-lower through groove, 23-movable part, 24-hexagonal groove, 25-bump, 26-upper through groove, 3-locking sleeve, 4-sliding groove, 41-side groove, 42-lower arc groove, 5-slide plate, 6-guide groove, 7-anti-loosening washer, 8-tightening block, 81-connecting surface, 82-vertical surface, 83-inclined surface, 9-blind hole, 10-insertion rod. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0048] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0049] The server provided in the embodiment of the present application is described in detail below through specific embodiments and application scenarios in conjunction with the accompanying drawings.

[0050] Embodiment 1:

[0051] like Figures 1 to 7 As shown, an embodiment of the present application provides a locking bolt, including a screw portion 1 and a bolt head 2, the screw portion 1 is cylindrical, including a pair of side plates 11 and a middle plate 12; the bolt head 2 includes a main body 21, a lower through groove 22, a movable portion 23 and a hexagonal groove 24, the movable portion 23 is fixedly connected to the middle plate 12, and can be lifted and slid in the lower through groove 22, a pair of side plates 11 are fixedly connected to both sides of the bottom surface of the main body 21, and the hexagonal groove 24 is arranged on the main body 21 and the movable portion 23.

[0052] Preferably, there is an angle of 2° between adjacent side walls of a pair of side panels 11 and between opposite side walls of the middle panel 12 .

[0053] Furthermore, the bolt head 2 also includes a plurality of protrusions 25 symmetrically distributed at both ends of the top surface of the lower through slot 22 .

[0054] Furthermore, the bolt head 2 further includes an upper through slot 26 , which is disposed at the top of the movable portion 23 , extends along the length direction thereof, and is penetrated at both ends.

[0055] In this embodiment of the present application, due to the adoption of the above-mentioned structure, the bolt head 2 and the screw part 1 are rotated by cooperating with the hexagonal groove 24 through the hexagonal wrench to tighten the screw part 1 with the external threaded blind hole, and then the external rod body is inserted into the lower through groove 22 and the upper through groove 26 to lift the screw part 1 and the pair of side plates 11 upward, and the bolt head 2 and the middle plate 12 are pressed downward, and the threads on the pair of side plates 11 and the threads on the middle plate 12 move in opposite directions, so that they can be locked with the external threaded blind hole, and the two ends of the top surface of the external rod body inserted into the upper through groove 26 and the lower through groove 22 are interference fit with the corresponding protrusions 25 to ensure that the external rod body does not fall out of the upper through groove 26 and the lower through groove 22;

[0056] When the pair of side plates 11 descends and the middle plate 12 rises, the pair of side plates 11 will be pushed outwards during the descending process due to the angle between adjacent side walls, and the threads on the outer surfaces of each side plate 11 will contact more closely with the external threaded blind holes.

[0057] Embodiment 2:

[0058] like Figures 3 to 6 As shown, in this embodiment, a matching locking kit is also disclosed, including a locking sleeve 3, which can be rotatably sleeved on the outside of the main body 21; a pair of sliding grooves 4, symmetrically arranged on the outer wall of the main body 21, respectively connected to the two ends of the lower through groove 22; a pair of slide plates 5, symmetrically fixed to the inner circumferential wall of the locking sleeve 3, and can slide between the corresponding sliding grooves 4 and the two ends of the lower through groove 22.

[0059] Furthermore, it also includes a pair of guide grooves 6 symmetrically arranged at two ends of the top surface of the movable portion 23, and the left and right sides of the bottom surfaces of the pair of guide grooves 6 are inclined.

[0060] Furthermore, the sliding groove 4 includes a side groove 41, which is arranged on the outer peripheral wall of the main body 21 and has a through top; a lower arc groove 42, which is arranged in the middle of the outer peripheral wall of the main body 21, one end of which is connected to the lower end of the side groove 41, and the other end extends in the tightening direction of the bolt head 2 to be connected to the end of the lower through groove 22.

[0061] In this embodiment of the present application, due to the adoption of the above-mentioned structure, after the screw portion 1 is tightened, the locking sleeve 3 is sleeved onto the outer side of the main body 21, and a pair of slide plates 5 slide from the side grooves 41 of each guide groove 6 to the corresponding lower arc groove 42, and then the locking sleeve 3 is rotated, and each slide plate 5 enters between the corresponding guide groove 6 and the end of the lower through groove 22 from the corresponding lower arc groove 42, pushing the movable portion 23 and the main body 21 to move downward and upward respectively, and a pair of side plates 11 and a pair of middle plates 12 move accordingly, and when the top surface of each slide plate 5 extends between the corresponding guide groove 6 and the end of the lower through groove 22, it is interference-fitted with each protrusion 25 to achieve locking;

[0062] The cross-section of the outer wall of the locking sleeve 3 is hexagonal, which is convenient for people to use a wrench to operate its rotation. When rotating the locking sleeve 3, insert the hexagonal wrench into the hexagonal groove 24 to fix the bolt head 2 and the screw part 1 to prevent the bolt head 2 and the screw part 1 from rotating again and causing thread wear.

[0063] Embodiment 3:

[0064] like Figure 6 and Figure 8 As shown, in this embodiment, in addition to the structural features of the aforementioned embodiments, it also includes an anti-loosening washer 7, which is sleeved on the outside of the screw portion 1; a plurality of tightening blocks 8, which are arranged in a ring shape and fixed to the bottom surface of the anti-loosening washer 7.

[0065] Furthermore, the pressing block 8 includes a connecting surface 81 , a vertical surface 82 and an inclined surface 83 which are sequentially connected end to end in a clockwise direction. The connecting surface 81 is fixedly connected to the bottom surface of the anti-loosening washer 7 , and the inclined surface 83 faces the tightening direction of the screw part 1 .

[0066] Furthermore, it also includes a plurality of blind holes 9 which are arranged at intervals on the bottom surface of the main body 21 ; and a plurality of insertion rods 10 which are fixed to the top surface of the anti-loosening washer 7 , and the upper ends of which can be slidably inserted into the corresponding blind holes 9 .

[0067] In this embodiment of the present application, due to the adoption of the above-mentioned structure, when the main body 21 and the movable part 23 are separated from each other, the lower end of the movable part 23 extends downward from the lower through groove 22, pressing the anti-loosening washer 7 downward, so that the connecting position of the connecting surface 81 of each locking block 8 and the vertical surface 82 is sunken into the surface of the external connecting part, and through the cooperation of each insertion rod 10 and the corresponding blind hole 9, the bolt head 2 and the screw rod part 1 cannot rotate, thereby strengthening the locking.

[0068] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0069] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A locking bolt, comprising a screw portion (1) and a bolt head (2), Features: The screw portion (1) is cylindrical and comprises a pair of side plates (11) and a middle plate (12); The bolt head (2) comprises a main body (21), a lower through groove (22), a movable portion (23) and a hexagonal recess (24); The movable part (23) is fixedly connected to the middle plate (12) and can be lifted and slid in the lower through groove (22); a pair of side plates (11) are fixedly connected to two sides of the bottom surface of the main body (21); and hexagonal grooves (24) are provided on the main body (21) and the movable part (23); Also includes: A locking sleeve (3) rotatably sleeved on the outside of the main body (21); A pair of sliding grooves (4) are symmetrically arranged on the outer wall of the main body (21) and are respectively connected to two ends of the lower through groove (22); A pair of slide plates (5) are symmetrically fixed to the inner peripheral wall of the locking sleeve (3) and can slide between the corresponding sliding grooves (4) and the two ends of the lower through groove (22).

2. A locking bolt according to claim 1, Features: There is an angle of 2° between adjacent side walls of a pair of side plates (11) and between opposite side walls of the middle plate (12).

3. A locking bolt according to claim 1, It is characterized in that The bolt head (2) further comprises: A plurality of protrusions (25) are symmetrically distributed at two ends of the top surface of the lower through groove (22).

4. A locking bolt according to claim 1, It is characterized in that The bolt head (2) further comprises: An upper through groove (26) is arranged at the top end of the movable portion (23), extending along the length direction thereof, and having two ends connected therewith.

5. A locking bolt according to claim 1, It is characterized in that Also includes: A pair of guide grooves (6) symmetrically arranged at two ends of the top surface of the movable portion (23); Wherein, the left and right sides of the bottom surface of the pair of guide grooves (6) are inclined.

6. A locking bolt according to claim 5, It is characterized in that The sliding groove (4) comprises: A side groove (41) is provided on the outer peripheral wall of the main body (21) and has a through top end; A lower arc groove (42) is arranged in the middle of the outer peripheral wall of the main body (21), one end of which is connected to the lower end of the side groove (41), and the other end of which extends in the tightening direction of the bolt head (2) to be connected to the end of the lower through groove (22).

7. A locking bolt according to claim 5, It is characterized in that Also includes: An anti-loosening washer (7) sleeved on the outside of the screw portion (1); A plurality of tightening blocks (8) are arranged in a ring shape and fixed to the bottom surface of the anti-loosening washer (7).

8. A locking bolt according to claim 7, It is characterized in that The abutting block (8) comprises: A connecting surface (81), a vertical surface (82) and an inclined surface (83) connected in sequence in a clockwise direction; The connecting surface (81) is fixedly connected to the bottom surface of the anti-loosening washer (7), and the inclined surface (83) faces the tightening direction of the screw rod portion (1).

9. A locking bolt according to claim 7, It is characterized in that Also includes: A plurality of blind holes (9) are arranged at intervals on the bottom surface of the main body (21); A plurality of insertion rods (10) are fixedly connected to the top surface of the anti-loosening washer (7), and the upper ends thereof can be slidably inserted into the corresponding blind holes (9).

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