CN219472504U - Lock screw - Google Patents

Abstract

The utility model relates to the field of fasteners, in particular to a locking screw which comprises a screw main body and an inner fastener, wherein the screw main body comprises a screw head and a threaded rod, the screw head is provided with a screw rotating groove, a channel communicated with the screw rotating groove is arranged in the threaded rod, an inner thread groove is arranged in the channel, a plurality of glue holes communicated with the channel are formed in the side end of the threaded rod, the glue holes penetrate through the outer end of the threaded rod, a sliding insert rod is arranged in the glue holes at the top of the top, a glue solution bag is arranged at the bottom of the channel, the inner fastener comprises an insert rod and a thread part, the insert rod is arranged in the channel, the thread part is fixed at the top of the insert rod and is connected with the inner thread groove, the insert rod moves downwards to push the sliding insert rod to move outwards along the glue holes, the glue solution bag is inserted into a fixing piece to realize further fixation, glue in the glue solution bag can flow upwards along the narrow channel and overflows between the threaded rod and the thread holes of the fixing piece through a plurality of groups of glue holes, and the locking performance is further improved.

Description

Lock screw

Technical Field

The utility model relates to the field of fasteners, in particular to a locking screw.

Background

The screw is a tool for fastening the parts of the device step by utilizing the physical and mathematical principles of the inclined circular rotation and friction force of the object. The screw is typically mounted in threaded engagement with other mating components by a screw shank at the tail thereof. The common nut generally has no further functions of anti-loosening and anti-rotation, can basically meet the requirements in common occasions, but is used in occasions with larger vibration amplitude, and the screw is easy to loose due to the action of huge vibration force, so that the screw is hoped to be permanently fixed in special occasions, but the effect of the screw cannot be achieved in many prior art.

The patent number is CN202123444455.7, discloses a lock screw, including screw, lower screw thread head and glass pipe, still includes injecting glue mouth, screw thread lid and internal thread jack, the screw bottom is equipped with the lower screw thread head rather than integrative, lower screw thread head bottom is equipped with the glass pipe, the internal thread jack that corresponds with lower screw thread head has been seted up to glass pipe top, the injecting glue mouth has been seted up to internal bottom the internal thread jack. This patent is along with continuously turning tightly to the screw for in the screw gradually got into the threaded hole, make the glass pipe by the screw with the threaded hole between extrude, make the glass pipe broken, thereby inside viscose glue seepage flows, and overflow between screw and threaded hole, realize gluing the glutinous processing between screw and the threaded hole, and the glass pipe after the breakage remains between screw and threaded hole, can further increase the frictional force between screw and the threaded hole.

However, the broken glass residues are easy to leak outwards, other influences are generated, and meanwhile, the glue solution mainly flows at the bottom of the screw, so that the upper end of the screw is not good in bonding effect.

To sum up, in order to solve the defects in the prior art, a locking screw with a simple structure needs to be designed.

Disclosure of Invention

The utility model provides a locking screw for solving the problems in the prior art.

The aim of the utility model can be achieved by the following technical scheme: a set screw comprising: screw main part and internal fastening spare, the screw main part includes pin fin and threaded rod, the pin fin is equipped with the screw and changes the groove, be equipped with the passageway that communicates the screw and changes the groove in the threaded rod, the inside internal thread groove that is equipped with of passageway, the threaded rod side is equipped with a plurality of gluey holes with the passageway intercommunication, glue the hole and link up the threaded rod outer end, the top be equipped with smooth inserted bar in the gluey hole, the passageway bottom is equipped with the glue solution bag, the internal fastening spare includes inserted bar, screw thread portion and sealing washer, the inserted bar sets up in the passageway, screw thread portion is fixed in the inserted bar top and is connected with the internal thread groove, the sealing ring is located on the inserted bar.

Further improvement, screw change groove two is equipped with at screw portion top, screw changes groove and screw and changes groove two and be the interior hexagonal cross-section.

Further improvement, the sliding inserted bar is symmetrically provided with two groups, and the outer end of the sliding inserted bar is provided with a conical head.

Further improvement, the inner end of the sliding plug rod is provided with a conical guide surface, and the conical guide surface is obliquely arranged along the outer end of the sliding plug rod.

Further improvement, the bottom of the inserted link is provided with a conical head.

Compared with the prior art, the anti-loose screw has the beneficial effects that:

the sliding insert rod is pushed to move outwards along the glue holes by the downward movement of the insert rod until the sliding insert rod is inserted into the fixing piece, further fixation is achieved, meanwhile, glue in the glue solution bag can flow upwards along a narrow channel and flows to the outer end of the threaded rod through a plurality of groups of glue holes, and overflows between the threaded rod and the threaded holes of the fixing piece, so that adhesion treatment is achieved between the threaded rod and the threaded holes, and the anti-loosening effect is greatly improved; the inside diameter of passageway is less for inside glue flows more easily upwards, and then flows in the multiunit glue hole, makes each position of threaded rod all can realize good gluey.

Drawings

FIG. 1 is a schematic view of the structure of the present utility model

FIG. 2 is a schematic view of the structure of the inside of the present utility model

FIG. 3 is a schematic view of another view of the present utility model

In the figure, 1-screw main body, 11-nail head, 12-threaded rod, 13-screw rotary groove, 14-channel, 15-internal thread groove, 16-glue hole, 17-sliding plug rod, 171-conical head, 172-conical guide surface, 2-internal fastener, 21-plug rod, 211-conical head, 22-threaded part, 221-screw rotary groove two, 23-sealing ring and 3-glue solution bag.

Detailed Description

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, as well as, for example, fixedly coupled, detachably coupled, or integrally coupled, unless otherwise specifically indicated and defined. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The technical scheme of the utility model is further described below with reference to the examples and the accompanying figures 1-3.

Example 1

A set screw, comprising: screw main part 1 and internal fastening member 2, screw main part 1 includes pin fin 11 and threaded rod 12, pin fin 11 is equipped with screw and changes groove 13, be equipped with the passageway 14 of intercommunication screw changes groove 13 in the threaded rod 12, the inside internal thread groove 15 that is equipped with of passageway 14, threaded rod 12 side is equipped with a plurality of glue holes 16 with passageway 14 intercommunication, glue holes 16 link up threaded rod 12 outer end, the top be equipped with smooth inserted bar 17 in the glue holes 16, passageway 14 bottom is equipped with glue solution bag 3, internal fastening member 2 includes inserted bar 21, screw thread portion 22 and sealing washer 23, inserted bar 21 sets up in passageway 14, screw thread portion 22 is fixed in inserted bar 21 top and is connected with internal thread groove 15, the sealing washer 23 cover is located on inserted bar 21.

As shown in fig. 1 to 3, the use principle of the present utility model is as follows: the screw main body 1 is screwed into the fixing piece through a conventional tool and then screwed into the inner fastening piece 2, the insert rod 21 moves downwards in the screwing process to push the sliding insert rod 17 to move outwards along the glue hole 16 until the sliding insert rod 17 is inserted into the fixing piece, further fixing is achieved, meanwhile, the lower end of the insert rod 17 can puncture the glue solution bag 3, glue in the glue solution bag 3 can flow upwards along the narrow channel 14, meanwhile, the sealing ring at the upper end can prevent the glue from flowing outwards from the inner thread groove 15 and flows to the outer end of the threaded rod 12 through a plurality of groups of glue holes 16 and overflows between the threaded rod 12 and the threaded hole of the fixing piece, so that the sticking treatment between the threaded rod 12 and the threaded hole is achieved, and the anti-loosening effect is greatly improved; because the diameter of the inside of the channel 14 is smaller, the glue in the channel can flow upwards more easily, and then flows out of the glue holes 16, so that the positions of the threaded rod 16 can be well adhered.

As a further preferred embodiment, a second screw rotating groove 221 is formed at the top of the threaded portion 22, and the second screw rotating groove 13 and the second screw rotating groove 221 are both of a hexagonal cross section. The screw main body 1 and the inner fastening piece 2 can be quickly and fixedly installed through the inner hexagonal screwdriver.

As a further preferred embodiment, the sliding plug rods 17 are symmetrically provided with two groups, the outer ends of the sliding plug rods 17 are provided with conical heads 171, the inner ends of the sliding plug rods 17 are provided with conical guide surfaces 172, and the conical guide surfaces 172 are obliquely arranged along the outer ends of the sliding plug rods 17. The sliding plunger 17 can be conveniently inserted into the fixing member by the tapered head 171 at the outer end, and the tapered guide surface 172 in the interior can conveniently move the plunger 21 downward so that the sliding plunger 17 can be smoothly moved outward.

As a further preferred embodiment, the bottom of the plunger 21 is provided with a conical head 211. The conical head 211 at the bottom can make the glue solution bag 3 more easy to puncture.

The foregoing describes in detail preferred embodiments of the present utility model. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the utility model by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.

Claims (5)

1. A set screw, comprising: screw main part and internal fastening spare, the screw main part includes pin fin and threaded rod, the pin fin is equipped with the screw and changes the groove, be equipped with the passageway that communicates the screw and changes the groove in the threaded rod, the inside internal thread groove that is equipped with of passageway, the threaded rod side is equipped with a plurality of gluey holes with the passageway intercommunication, glue the hole and link up the threaded rod outer end, the top be equipped with smooth inserted bar in the gluey hole, the passageway bottom is equipped with the glue solution bag, the internal fastening spare includes inserted bar, screw thread portion and sealing washer, the inserted bar sets up in the passageway, screw thread portion is fixed in the inserted bar top and is connected with the internal thread groove, the sealing ring is located on the inserted bar.

2. The locking screw as set forth in claim 1, wherein a second screw turning groove is formed in the top of the threaded portion, and both the second screw turning groove and the second screw turning groove are of a hexagonal cross section.

3. The locking screw as set forth in claim 1, wherein said sliding rods are symmetrically arranged in two sets, and the outer ends of said sliding rods are provided with conical heads.

4. A set screw according to claim 3 wherein the inner end of the slide bar is provided with a tapered guide surface which is inclined along the outer end of the slide bar.

5. The lock screw as claimed in claim 1, wherein the bottom of the plunger is provided with a tapered head.