Anti-falling screw structure

Abstract

The utility model relates to the technical field of screw structures, in particular to an anti-falling screw structure. According to the technical scheme, the screw comprises a screw rod and further comprises a screw head fixedly connected to one end of the screw rod, inner through grooves are formed in the screw head and the screw rod, round hole grooves communicated with the inner through grooves are formed in the two sides of the screw rod, a bolt head is arranged at the upper end of the interior of each inner through groove, and a moving rod is arranged at the bottom end of each bolt head. And one end of the moving rod is fixedly connected with a trigger block. According to the anti-falling screw rod, the anti-falling of the screw rod is realized, and the limiting rod can be locked and fixed by the arc-shaped groove and the fixing rod, so that the limiting effect of the limiting rod is better, the anti-falling effect is obviously improved, and the anti-falling service life is longer.

Description

TECHNICAL FIELD

[0001] The utility model relates to screw structure technical field especially relates to a prevent screw structure that drops. BACKGROUND

[0002] Screw is widely used for fixing the part of article, the traditional screw is composed of screw body and screw head, the screw body is equipped with the screw thread on the surface, the screw head is equipped with straight line, as the force point when rotating.

[0003] The existing screw usually all screw nut and utilize the thread of itself and screw hole adaptation carry out fixed, however long -term fixed screw is easy because daily consumption, external vibration, impact etc. Uncontrollable factor makes the screw loose, produces the phenomenon of screwing off, this phenomenon is fatal on some need to lock the installation structure in the mechanical field, easy make the connection of equipment or workpiece loose, therefore the application proposes a prevent screw structure that drops. SUMMARY

[0004] The utility model discloses to the long -term fixed screw of existing in the background art, because daily consumption, external vibration etc. Factor, make the screw loose, produce the phenomenon of screwing off, poor stability's problem, propose a prevent screw structure that drops.

[0005] The utility model discloses a prevent screw structure that drops, including screw rod, still include:

[0006] The screw head of fixed connection in the one end of screw rod, the inside of screw head and screw rod all is equipped with inner through groove, the both sides of screw rod are equipped with the round hole groove with inner through groove, the inside upper end of inner through groove is provided with bolt head, the bottom of bolt head is provided with movable rod, and one end of movable rod is fixedly connected with trigger block.

[0007] The prevent screw structure that drops, the prevent screw assembly is set up in inner through groove and is used for preventing the loose drop of screw.

[0008] Locking limiting device, locking limiting device sets up on trigger block and is used for the fixing of prevent screw assembly.

[0009] Optional, the top of bolt head is installed with the rotating shaft, and the top of rotating shaft is fixedly connected with the rotating cap.

[0010] Optional, movable rod and bolt head are connected through the movable shaft cooperation, and the inner wall upper end of inner through groove is provided with the internal thread matched with bolt head.

[0011] Optional, the prevent screw assembly includes the sliding slot of setting up in the bottom wall of inner through groove, two trapezoidal sliding blocks are slidably installed in the sliding slot, and the two trapezoidal sliding blocks are installed with reset spring on the side close to the round hole groove, and the reset spring is connected with the limiting rod in the round hole groove.

[0012] Optionally, the locking and limiting device comprises support rods fixedly installed on both sides of the trigger block, and connecting pieces fixedly connected to the two support rods, wherein the bottom end of each connecting piece is fixedly installed with a moving plate, the lower end of each moving plate is provided with an arc-shaped groove, and the two sides of the arc-shaped groove on each moving plate are fixedly installed with a fixed rod.

[0013] Optionally, the inner wall of the inner through groove is provided with a fixed hole matched with the fixed rod, and the connecting position of the reset spring and the limiting rod is provided with a limiting ring, and the arc of the arc-shaped groove is matched with the limiting ring.

[0014] Optionally, the bottom end of the screw head is connected with a rubber gasket.

[0015] In summary, the present application has at least one of the following beneficial technical effects:

[0016] The movable shaft, the trigger block, the moving rod, the trapezoidal slide block, the limiting rod, the limiting ring and the reset spring are arranged, the moving rod can drive the trigger block to move downward by the tightening of the bolt head, the trigger block is abutted against the inclined end face of the trapezoidal slide block, the limiting rod can successfully move out of the circular hole groove and abut against the side edge of the connecting device, the screw rod is prevented from being detached, and the stability is improved.

[0017] The support rod, the arc-shaped groove, the moving plate and the fixed rod are further arranged, the fixed rod can be inserted into the fixed hole when the trigger block moves downward, the arc-shaped groove is clamped above the limiting ring, the locking and limiting of the limiting rod are completed, the limiting effect of the limiting rod is better, the anti-detaching effect is significantly improved, and the anti-detaching life is longer.

[0018] The present application prevents the screw rod from being detached, the arc-shaped groove and the fixed rod can lock and fix the limiting rod, the limiting effect of the limiting rod is better, the anti-detaching effect is significantly improved, and the anti-detaching life is longer. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The structure schematic view of one embodiment of the present application is given;

[0020] Figure 2 The connecting structure schematic view of the moving rod is given;

[0021] Figure 3 The internal structure schematic view of the inner through groove is given;

[0022] Figure 4 The connecting structure schematic view of the moving plate is given.

[0023] Mark No. : 1, screw rod; 2, screw head; 3, inner through groove; 4, round hole groove; 5, bolt head; 6, moving rod; 7, trigger block; 8, rotating shaft; 9, rotating cap; 10, internal thread; 11, movable shaft; 12, sliding groove; 13, trapezoidal sliding block; 14, reset spring; 15, limiting ring; 16, limiting rod; 17, supporting rod; 18, connecting piece; 19, moving plate; 20, arc-shaped groove; 21, fixed rod; 22, rubber gasket. DETAILED DESCRIPTION

[0024] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0025] The components of the embodiments of the present application generally described and shown in the drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the present application.

[0026] Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0028] It should be noted that the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the processes, methods, articles or devices including a series of elements not only include those elements, but also include other elements not explicitly listed or inherent to such processes, methods, articles or devices. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0029] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, the term "installation", "link", "connection" should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be directly connected, also can be indirectly connected through the intermediate medium, can be the communication inside two elements. For ordinary skilled person in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to specific circumstances.

[0030] Embodiment

[0031] As Figure 1 And Figure 2 The utility model discloses a kind of anti-loosing screw structures, including screw rod 1, further include the screw head 2 of fixed connection in screw rod 1 one end, the outer surface of screw rod 1 is provided with thread, by screwing screw head 2 make the thread of screw rod 1 and screw hole is screwed, complete the fixed connection to object, the bottom end outer wall of screw head 2 is connected with rubber gasket 22, the inside of screw head 2 and screw rod 1 is all set up inner through slot 3, the both sides of screw rod 1 are set up with the circular hole groove 4 that inner through slot 3 is communicated;

[0032] In addition, the inside upper end of inner through slot 3 is provided with bolt head 5, the bottom end of bolt head 5 is provided with moving rod 6, one end of moving rod 6 is fixedly connected with trigger block 7, moving rod 6 and bolt head 5 are connected by movable shaft 11 cooperation, movable shaft 11 can transmit force and torque, moving rod 6 is provided with straight gear and movable shaft 11 connection, that is, moving rod 6 will not rotate with the rotation of movable shaft 11, the inner wall upper end of inner through slot 3 is provided with the inner thread 10 matched with bolt head 5, when bolt head 5 and movable shaft 11 rotate, moving rod 6 will drive trigger block 7 to move downwards;

[0033] It is worth mentioning that, the top of bolt head 5 is equipped with rotating shaft 8, the top end of rotating shaft 8 is fixedly connected with screw cap 9, screw cap 9 is screwed to make rotating shaft 8 rotate drive bolt head 5 more conveniently screwing rotation, easily and save labor.

[0034] As Figures 1-4 As shown in the figure, the device further includes anti-loosing assembly, and the anti-loosing assembly is arranged in the inner through slot 3 and is used for preventing the loosening and falling of the screw, and the anti-loosing assembly comprises a sliding groove 12 formed in the bottom wall of the inner through slot 3, two trapezoidal sliding blocks 13 are slidably arranged in the sliding groove 12, the two trapezoidal sliding blocks 13 are each provided with a return spring 14 on the side close to the circular hole groove 4, the return spring 14 is connected with a limiting rod 16 located in the circular hole groove 4, the moving rod 6 drives the trigger block 7 to move downwards, the trigger block 7 is used to knock the inclined end surface of the two trapezoidal sliding blocks 13 downwards, the two trapezoidal sliding blocks 13 drive the limiting rod 16 to move outward, the limiting rod 16 moves out of the circular hole groove 4 and abuts against the side edge of the connecting device, and the falling of the screw rod 1 is prevented.

[0035] As Figures 1-4 shown, the device further comprises a locking and limiting device arranged on the trigger block 7 for fixing the anti-disengagement assembly, the locking and limiting device comprises support rods 17 fixedly installed on both sides of the trigger block 7, the support rods 17 are fixedly connected with connecting pieces 18, the connecting pieces 18 are fixedly installed with moving plates 19 at the bottom ends, the moving plates 19 are provided with arc-shaped grooves 20 at the lower ends, the moving plates 19 are fixedly installed with fixed rods 21 at both sides of the arc-shaped grooves 20, and the trigger block 7 moves downward to drive the support rods 17 to move downward, so that the moving plates 19 are adjusted and moved;

[0036] Further, the inner wall of the inner through groove 3 is provided with a fixing hole matched with the fixed rod 21, the connecting part of the reset spring 14 and the limiting rod 16 is provided with a limiting ring 15, the arc of the arc-shaped groove 20 is matched with the limiting ring 15, the moving plate 19 is moved downward, so that the arc-shaped groove 20 can be clamped on the limiting ring 15, and the fixed rod 21 is inserted into the fixing hole, the fixing and locking of the anti-disengagement assembly are completed, the screw is more stable as a whole, and the anti-disengagement life is longer.

[0037] Working principle: the screw head 2 is twisted to rotate, the threads on the screw rod 1 and the screw hole are screwed, the rotating cap 9 is twisted to rotate the rotating shaft 8, the rotating shaft 8 drives the bolt head 5 to rotate, cooperates with the internal thread 10, so that the bolt head 5 can be screwed, under the transmission force and torque of the movable shaft 11, when the bolt head 5 is screwed, the moving rod 6 drives the trigger block 7 to move downward, the trigger block 7 is abutted on the inclined end faces of the two trapezoidal sliding blocks 13, the two trapezoidal sliding blocks 13 can move outward along the sliding grooves 12, the limiting rod 16 moves out of the circular hole groove and abuts against the side edge of the fixed connecting device, effectively preventing the screw rod 1 from falling off, at the same time, when the trigger block 7 moves downward, the support rod 17 moves downward, the moving plate 19 drives the fixed rod 21 to move downward, the fixed rod 21 is inserted into the fixing hole of the inner through groove 3, at this time, the arc-shaped groove 20 is clamped on the limiting ring 15, the locking and fixing of the limiting rod 16 are completed, the force of the limiting rod 16 is more stable and firm, the anti-disengagement effect is significantly provided, when disassembling, the rotating cap 9 is twisted in the opposite direction, the trigger block 7 moves upward, the trapezoidal sliding blocks 13 are no longer subjected to the extrusion force, the reset spring 14 is reset, the trapezoidal sliding blocks 13 slide inward, and the limiting rod 16 returns to the inside of the circular hole groove 4.

[0038] The above specific embodiments are only several optional embodiments of the utility model, based on the technical scheme of the utility model and the related inspiration of the above embodiments, the person skilled in the art can make various alternative improvements and combinations on the above specific embodiments.

Claims

1. A screw pull-out prevention structure comprising a screw shaft (1), characterized in that, Also include: The screw head (2) is fixedly connected at one end of the screw rod (1), the screw head (2) and the inside of the screw rod (1) are provided with an inner through groove (3), the both sides of the screw rod (1) are provided with a circular hole groove (4) communicated with the inner through groove (3), the inner through groove (3) is provided with a bolt head (5) at the upper end of the inner wall, the bottom end of the bolt head (5) is provided with a moving rod (6), one end of the moving rod (6) is fixedly connected with a trigger block (7); The anti-drop assembly is arranged in the inner through groove (3) and is used for preventing the screw from loosening and falling off, the anti-drop assembly comprises a sliding groove (12) arranged in the bottom wall of the inner through groove (3), two trapezoidal sliding blocks (13) are slidably arranged in the sliding groove (12), the trapezoidal sliding blocks (13) are arranged on the side close to the circular hole groove (4), and the trapezoidal sliding blocks (13) are provided with reset springs (14) on the side close to the circular hole groove (4), the reset springs (14) are connected with limiting rods (16) arranged in the circular hole groove (4); The locking limiting device is arranged on the trigger block (7) and is used for fixing the anti-drop assembly, the locking limiting device comprises support rods (17) fixedly arranged on the both sides of the trigger block (7), the support rods (17) are fixedly connected with connecting pieces (18), the bottom end of the connecting piece (18) is fixedly provided with a moving plate (19), the lower end of the moving plate (19) is provided with an arc-shaped groove (20), and the moving plate (19) is fixedly provided with fixed rods (21) on the both sides of the arc-shaped groove (20).

2. The anti-loosening screw structure according to claim 1, wherein The top of the bolt head (5) is provided with a rotating shaft (8), and the top end of the rotating shaft (8) is fixedly connected with a rotating cap (9).

3. The anti-loosening screw structure according to claim 1, wherein The moving rod (6) and the bolt head (5) are connected through the movable shaft (11), and the inner wall of the inner through groove (3) is provided with an inner thread (10) matched with the bolt head (5).

4. The anti-loosening screw structure according to claim 1, wherein The inner wall of the inner through groove (3) is provided with a fixing hole matched with the fixed rod (21), the connecting portion of the reset spring (14) and the limiting rod (16) is provided with a limiting ring (15), and the arc of the arc-shaped groove (20) is matched with the limiting ring (15).

5. The anti-loosening screw structure according to claim 1, wherein The bottom end of the screw head (2) is connected with a rubber gasket (22).

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