Anti-falling bolt and nut assembly convenient to assemble and disassemble

Abstract

The utility model relates to the field of fasteners, in particular to an anti-falling bolt and nut assembly convenient to assemble and disassemble, which comprises a screw rod and a nut in threaded connection with the screw rod, an even number of limiting openings I are formed in one end, far away from a fastened piece, of the nut in an annular array mode, and a spring I sleeved on the surface of the screw rod is arranged at the other end of the nut. One end of the screw rod is provided with at least two through holes, the limiting rod assembly is inserted into one through hole and located in the corresponding first limiting opening, and the limiting rod assembly comprises a limiting pipe fitting and second limiting openings symmetrically formed in the surface of the limiting pipe fitting. And a limiting driving rod with an opening in one side is slidably connected into the limiting pipe fitting. The T-shaped rod is pressed to drive the limiting driving rod to move in the limiting pipe fitting, and the second limiting opening and the third limiting opening coincide, so that the nut is limited by the limiting elastic piece, and the nut is prevented from falling off and rotating.

Description

TECHNICAL FIELD

[0001] The utility model relates to the fastener field especially is related to a convenient to assemble and disassemble anti -drop bolt nut assembly. BACKGROUND

[0002] The bolt nut assembly is the mechanical fastener combination of bolt and nut, when the bolt passes through the through hole of the connected piece (such as two metal sheets) and is tightened with the nut, the connection of the connected piece can be realized, the bolt nut assembly is widely used and is divided into various types, and the anti -drop bolt nut assembly is one of them, the anti -drop bolt nut assembly generally includes the screw rod with hole and the slotted nut, and is used in cooperation through the split pin, to prevent the relative rotation of the bolt and the nut, after the nut is tightened, the split pin is inserted into the nut slot and the bolt tail hole, and the split pin tail is pulled open, to prevent the relative rotation of the nut and the bolt, due to the characteristics of disassembly and assembly, the bolt nut assembly is often used in the occasions that need to be frequently disassembled and the stress is not big, for example, the parts frequently affected by vibration in the vehicles, motorcycles and other vehicles, and the construction of the exhibition stand, the bolt nut assembly can help to connect and fix various exhibition boards, exhibition racks and other parts.

[0003] For the related technology in the above, the inventor finds that the traditional anti -drop bolt nut assembly effectively prevents the nut from falling off through the split pin, and is popular due to its wide application field, but in some cases, the bolt nut assembly may need to be disassembled after installation to replace parts, at this time, the bolt is relatively complex to disassemble, because the split pin needs to be pulled out using pliers and other tools, and more inconveniently, after reinstalling the bolt, a new split pin needs to be installed, which not only increases the complexity of the operation steps, but also may adversely affect the installation effect of the fastened part. CONTENT OF THE UTILITY MODEL

[0004] The utility model mainly solves the technical problem to provide a kind of anti -drop bolt nut assembly convenient to assemble and disassemble, it is convenient to replace and disassemble to bolt nut assembly, improve the convenience of disassembly simultaneously.

[0005] To solve the above technical problems, one technical scheme of the utility model is provided: provide a kind of anti -drop bolt nut assembly convenient to assemble and disassemble, including: screw rod and the nut of thread connection, the nut is remotely fastened part and is arranged with even number of limit port one in annular array, another end of the nut is equipped with spring one that is sleeved on the surface of screw rod, one end of the screw rod is equipped with not less than two through holes, further include limit rod assembly, the limit rod assembly is inserted in one of through holes and is located in corresponding limit port one inside;

[0006] The limiting rod assembly comprises a limiting pipe and two limiting openings symmetrically formed on the surface of the limiting pipe, a limiting driving rod with one side opening is slidably connected in the limiting pipe, a spring two is connected between one end of the limiting driving rod and one end of the inner wall of the limiting pipe, a T-shaped rod is connected to the other end of the limiting driving rod, a limiting opening three is formed on the limiting driving rod and matched with the limiting opening two, a limiting spring piece is assembled in the limiting driving rod, the upper and lower ends of the limiting spring piece are respectively located in the corresponding limiting opening two and abuttingly connected with the surface of the screw rod, and a ring-shaped limiting boss is connected to the end of the limiting pipe away from the limiting opening two.

[0007] By adopting the above technical scheme, the screw rod and the nut are matched with the limiting opening one, and the limiting rod assembly is assisted to realize the anti-falling function, the spring one is used to provide the pre-tightening force, the through hole is matched with the corresponding limiting opening one in the process of tightening to insert the limiting rod assembly, the limiting pipe and the limiting driving rod are slidably connected, and the spring two is arranged, so that the limiting rod assembly can be flexibly inserted and fixed in the through hole, and the T-shaped rod is used to facilitate the user to manually operate the limiting driving rod to realize the insertion and extraction of the limiting rod assembly, the limiting opening three is matched with the limiting opening two, and the limiting spring piece is abuttingly connected with the surface of the screw rod, so that the stable fixation of the limiting rod assembly in the through hole is realized, the ring-shaped limiting boss prevents the falling in the use process, the limiting driving rod is used to manually operate the insertion and extraction of the limiting rod assembly to realize the assembly and disassembly of the bolt, the reset force of the spring two helps to keep the stable position of the limiting driving rod in the limiting pipe and prevent the accidental falling in the use process, and the T-shaped rod is used to manually operate the movement of the limiting driving rod in the limiting pipe to drive the movement of the limiting spring piece in the limiting opening three, so that the abutting connection between the limiting spring piece and the surface of the screw rod is realized, and the anti-falling effect is further enhanced.

[0008] In a preferred example, the limiting spring piece comprises a V-shaped spring piece and an arc-shaped spring piece, both ends of the arc-shaped spring piece are connected with vertical extension parts, the vertical extension parts are connected with the opening ends of the V-shaped spring piece respectively, the vertical extension parts are located in the limiting opening two respectively, when the corresponding limiting opening two and the corresponding limiting opening three are coincided by the driving of the limiting driving rod, the vertical extension parts are located in the limiting opening two and abuttingly connected with the surface of the screw rod.

[0009] By adopting the above technical scheme, when the limiting driving rod drives the corresponding limiting port two and the limiting port three to coincide, the V-shaped elastic sheet can ensure that the vertical extension part accurately enters the limiting port two and forms a close abutting connection with the surface of the screw rod, preventing loosening caused by vibration or external force, and the elastic deformation capability of the arc-shaped elastic sheet helps to maintain the stable position of the vertical extension part when the limiting driving rod moves, the arc-shaped elastic sheet can smoothly guide the vertical extension part through the limiting port two when the limiting driving rod is inserted or pulled out, and in addition, through the vertical extension part, when the limiting driving rod coincides with the limiting port two, the vertical extension part moves to the position where the limiting port two coincides with the limiting port two under the elastic action of the V-shaped elastic sheet and the arc-shaped elastic sheet, limiting the screw rod, effectively preventing loosening and falling of the nut.

[0010] The utility model discloses in a preferable example can be further configured as: the limiting pipe spare includes the cylinder and annular boss, the inside of cylinder open end is provided with annular groove, the one end of annular boss near cylinder is connected with the elastic snap ring that is matched with annular groove, and the elastic snap ring is connected with annular groove.

[0011] By adopting the above technical scheme, the cylinder is used for receiving the limiting driving rod, so as to limit and install the limiting driving rod, and through the action of the elastic snap ring on the annular boss, the elastic deformation capability is utilized to realize the clamping of the annular groove, so that the elastic snap ring is assembled and installed, so as to install and fix the limiting driving rod.

[0012] The utility model discloses in a preferable example can be further configured as: the surface of T-shaped rod is connected with the elastic arc-shaped limiting sheet, and the arc surface of elastic arc-shaped limiting sheet is connected with the thumb piece.

[0013] By adopting the above technical scheme, the elastic arc-shaped limiting sheet is clamped on the surface of the T-shaped rod, mainly used for limiting the axial movement of the T-shaped rod, ensuring the stability and accuracy in the operation process, and providing sufficient elastic force to keep in place, so that the limiting elastic sheet part is limited at the position where the limiting port two and the limiting port three coincide, preventing it from falling off, to ensure the anti-falling effect, and the thumb piece provides a part easy to hold and operate for the user, so that the user can more conveniently exert force through fingers or thumbs, thereby easily controlling the movement of the T-shaped rod.

[0014] The utility model discloses in a preferable example can be further configured as: the nut is hexagonal nut, and the number of limiting port one is equal to the number of side edges of the nut.

[0015] By adopting the technical scheme, the number of the limiting openings one is equal to the number of the side of the nut, so that at least one limiting opening one can be always aligned with the limiting rod assembly during rotation of the nut, thereby facilitating insertion and extraction of the limiting rod assembly, enhancing connection stability and reliability between the limiting rod assembly and the nut, and ensuring bolt anti-falling effect.

[0016] In summary, the utility model discloses at least one of the following beneficial technical effects of the detachable anti-falling bolt and nut assembly:

[0017] 1、 by pressing T-shaped rod, make its drive limiting drive rod move in the limiting pipe spare, and make limiting mouth no. 2 with limiting mouth no. 3 coincide, to make limiting elastic piece spare limit nut, prevent its fall and rotate, and by drive limiting drive rod to the motion of limiting pipe spare, make limiting mouth no. 2 with limiting mouth no. 3 separate, simultaneously under the elastic deformation of V-shaped elastic sheet and the smooth guiding action of arc elastic sheet, can make limiting rod assembly easily, accurately insert and extract limiting mouth, greatly simplify the operation steps. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the following will be briefly introduced the drawing needed to be used in the embodiment description, obviously, the drawing in the following description is only some embodiments of the utility model, for those skilled in the art, under the premise of not paying creative labor, can also obtain other drawings according to these drawings, wherein:

[0019] Figure 1 It is the structural schematic diagram of the utility model;

[0020] Figure 2 It is the structural schematic diagram of the limiting rod assembly of the utility model;

[0021] Figure 3 It is the partial exploded view of the limiting rod assembly of the utility model;

[0022] Figure 4 It is the partial sectional view of the limiting drive rod of the utility model;

[0023] Figure 5 It is the structural schematic diagram of the limiting pipe spare of the utility model.

[0024] In the drawing: 1, screw rod;2, nut;3, limiting opening one;4, spring one;5, through hole;60, limiting rod assembly;

[0025] 61, limiting pipe spare;62, limiting mouth no. 2;63, limiting drive rod;64, spring no. 2;65, T-shaped rod;66, limiting mouth no. 3;67, limiting elastic piece spare;68, annular limiting boss;69, elastic arc limiting sheet;6a, thumb piece;

[0026] 611, barrel; 612, annular boss; 613, annular groove; 614, elastic clamping ring;

[0027] 671, V-shaped elastic sheet; 672, arc-shaped elastic sheet; 673, vertical extension. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present application will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are merely intended to illustrate and explain the present application, and are not intended to limit the present application.

[0029] It should be noted that these drawings are simplified schematic diagrams, and only schematically show the basic structure of the present application, and thus only show the structures related to the present application.

[0030] Referring to Figures 1-5The utility model discloses a kind of bolt nut assemblies of preventing falling off convenient to assemble and disassemble, comprising: screw rod 1 and the nut 2 being threadedly connected with it, the annular array of the one end of nut 2 away from fastener is opened with even number of limit port one 3, the other end of nut 2 is equipped with spring one 4 being sleeved on the surface of screw rod 1, the one end of screw rod 1 is opened with not less than two through holes 5, further comprising limit rod assembly 60, limit rod assembly 60 is inserted in one of through holes 5 and located in corresponding limit port one 3, nut 2 is hexagon nut 2 and the number of limit port one 3 is equal to the number of side of nut 2, limit rod assembly 60 includes limit pipe fitting 61 and limit port two 62 being symmetrically opened on its surface, limit pipe fitting 61 is slidably connected with the limit driving rod 63 of one side opening, spring two 64 is connected between the one end of limit driving rod 63 and the one end of limit pipe fitting 61 inner wall, the other end of limit driving rod 63 is connected with T-shaped rod 65, limit port three 66 being adapted to limit port two 62 is opened in limit driving rod 63, limit driving rod 63 is assembled with limit spring piece 67, the upper and lower ends of limit spring piece 67 are located in corresponding limit port two 62 respectively, and with the surface of screw rod 1 abutment connection, the one end of limit pipe fitting 61 away from limit port two 62 is connected with annular limit boss 68, the surface of T-shaped rod 65 is clamped with elastic arc limit piece 69, the arc surface of elastic arc limit piece 69 is connected with thumb piece 6a;Elastic arc limit piece 69 and thumb piece 6a are all plastic pieces, when it has elastic function and is clamped on the surface of T-shaped rod 65, can also limit T-shaped rod 65, to cooperate limit spring piece 67, limit screw rod 1 and nut 2, simultaneously because the number of limit port one 3 is equal to the number of side of nut 2, the side of nut 2 can be with it corresponding, and present 60 ° annular array distribution, in addition under the action of spring one 4, can ensure that at least one limit port one 3 can always keep alignment with limit rod assembly 60 during the rotation of nut 2, to facilitate the insertion and extraction of limit rod assembly 60, and by pressing T-shaped rod 65, make it drive limit driving rod 63 move in limit pipe fitting 61, and make limit port two 62 and limit port three 66 coincide, to make limit spring piece 67 limit nut 2, can reach limit effect, also can facilitate the disassembly and assembly of fastener.

[0031] The limiting spring piece 67 comprises a V-shaped spring 671 and an arc-shaped spring 672, two ends of the arc-shaped spring 672 are respectively connected with vertical extensions 673, the vertical extensions 673 are respectively connected with the open ends of the V-shaped spring 671, the vertical extensions 673 are respectively located in the limiting openings two 62, when the limiting drive rods 63 drive the corresponding limiting openings two 62 to coincide with the corresponding limiting openings three 66, the vertical extensions 673 are located in the limiting openings two 62 and are in contact with the surface of the screw rod 1; the V-shaped spring 671 and the arc-shaped spring 672 are both made of spring steel material, when the T-shaped rod 65 drives the limiting drive rods 63 to move in the limiting tube 61 and the limiting openings two 62 coincide with the limiting openings three 66, the V-shaped spring 671 and the arc-shaped spring 672 are deformed, so that the limiting spring piece 67 limits, and the limiting drive rods 63 can also be prevented from falling off, in addition, under the action of the vertical extensions 673, when the limiting drive rods 63 coincide with the limiting openings two 62, the vertical extensions 673 move to the position where the limiting openings two 62 coincide with the limiting openings three 66 under the elasticity of the V-shaped spring 671 and the arc-shaped spring 672, and the screw rod 1 is limited.

[0032] The limiting tube 61 comprises a cylinder 611 and an annular boss 612, an annular groove 613 is formed in the inner side of the open end of the cylinder 611, the annular boss 612 is connected with an elastic clamping ring 614 matched with the annular groove 613 at one end close to the cylinder 611, and the elastic clamping ring 614 is clamped with the annular groove 613.

[0033] The implementation principle of the embodiment is that, in use, the screw rod 1 is inserted into the components to be connected, then the nut 2 is rotated onto the screw rod 1 and tightened to the required position, the limiting rod assembly 60 is inserted, and the limiting openings one 3 on the nut 2 are observed to align with the through holes 5 on the screw rod 1, then the limiting tube 61 of the limiting rod assembly 60 is inserted into the through holes 5 of the screw rod 1, at this time, the limiting spring piece 67 is deformed under pressure and shrinks into the limiting openings two 62, and resets after passing through the through holes 5, at this time, the vertical extensions 673 of the limiting spring piece 67 are in contact with the surface of the screw rod 1, and the elastic arc-shaped limiting pieces 69 are clamped on the surface of the T-shaped rod 65, to realize the limiting function, if disassembly is needed, only the elastic arc-shaped limiting pieces 69 are removed and the T-shaped rod 65 is pressed, the limiting drive rods 63 are driven to move in the limiting tube 61, the limiting openings two 62 are misaligned with the limiting openings three 66, at this time, the limiting drive rods 63 drive the limiting spring piece 67 to move towards the closed end of the limiting tube 61, the limiting rod assembly 60 is driven to separate from the through holes 5, and the nut 2 is rotated to separate from the screw rod 1.

[0034] The above merely illustrates the embodiments of the present application, and is not intended to limit the patent scope of the present application, and any equivalent structure or equivalent process conversion, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A captive bolt nut assembly for ease of handling, comprising: Screw rod (1) and nut (2) are connected with screw rod (1), nut (2) is provided with an even number of limiting port one (3) in the annular array away from the end of the fastener, the other end of the nut (2) is provided with spring one (4) sleeved on the surface of the screw rod (1), one end of the screw rod (1) is provided with not less than two through holes (5), characterized in that, it further comprises limiting rod assembly (60), the limiting rod assembly (60) is inserted into one of the through holes (5) and located in the corresponding limiting port one (3). The limiting rod assembly (60) comprises a limiting tube (61) and a limiting port two (62) symmetrically provided on the surface thereof, the limiting tube (61) is slidably connected with a limiting drive rod (63) having a side opening, the limiting drive rod (63) is connected with spring two (64) between one end of the limiting drive rod (63) and one end of the inner wall of the limiting tube (61), the other end of the limiting drive rod (63) is connected with a T-shaped rod (65), the limiting drive rod (63) is provided with a limiting port three (66) matched with the limiting port two (62), the limiting drive rod (63) is assembled with a limiting spring piece (67), the upper and lower ends of the limiting spring piece (67) are located in the corresponding limiting port two (62) respectively, and are in abutting connection with the surface of the screw rod (1), the end of the limiting tube (61) away from the limiting port two (62) is connected with an annular limiting boss (68).

2. A captive bolt nut assembly according to claim 1, wherein, The limiting spring piece (67) comprises a V-shaped spring (671) and an arc spring (672), both ends of the arc spring (672) are connected with vertical extensions (673) respectively, the vertical extensions (673) are connected with the open ends of the V-shaped spring (671) respectively, the vertical extensions (673) are located in the limiting port two (62) respectively, when the corresponding limiting port two (62) coincides with the corresponding limiting port three (66) driven by the limiting drive rod (63), the vertical extensions (673) are located in the limiting port two (62) and abut the surface of the screw rod (1) at the same time.

3. The anti-backout bolt and nut assembly of claim 1, wherein: The limiting tube (61) comprises a cylinder (611) and an annular boss (612), the inner side of the open end of the cylinder (611) is provided with an annular groove (613), the end of the annular boss (612) close to the cylinder (611) is connected with an elastic clamping ring (614) matched with the annular groove (613), and the elastic clamping ring (614) is clamped with the annular groove (613).

4. The anti-backout bolt and nut assembly of claim 1, wherein: The surface of the T-shaped rod (65) is clamped with an elastic arc limiting piece (69), the arc surface of the elastic arc limiting piece (69) is connected with a thumb piece (6a).

5. The anti-backout bolt and nut assembly of claim 1, wherein, The nut (2) is a hexagonal nut (2), and the number of limiting port one (3) is equal to the number of side edges of the nut (2).

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