CN220354247U - Bolt with adjustable length - Google Patents

Abstract

The utility model relates to the technical field of bolts, in particular to a bolt with adjustable length, which comprises a device body, wherein the device body comprises a screw rod, an outer hexagonal screw head, an inner hexagonal screw head and a hand pulling rod, the upper end of the screw rod is provided with a central rod, the bottom of the outer hexagonal screw head is fixedly provided with a connecting column, the lower end of the connecting column is provided with a central groove, the central rod is inserted in the central groove, the outer side of the connecting column is provided with an outer thread, a nut is screwed on the outer thread, the nut is screwed between the outer thread and the screw rod in a rotating way, a gear is arranged in the outer hexagonal screw head in a rotating way, the outer side of the gear is meshed with a rack rod, and the bottom of the inner hexagonal screw head is fixedly provided with a connecting ring, so that the connecting ring and the outer hexagonal screw head can be fixedly connected, the inner hexagonal screw head or the hand pulling rod can be conveniently installed on the outer hexagonal screw head, the screw rod with different length sizes can be conveniently replaced, and the applicability of the bolt is improved.

Description

Bolt with adjustable length

Technical Field

The utility model relates to the technical field of bolts, in particular to a bolt with adjustable length.

Background

The bolt is a tool applied to connecting and fastening articles, and is convenient for the mutual stable connection between different articles through the installation and use of the bolt, convenient and fast to use and operate, and can effectively avoid the loosening problem after connection between articles to take place, improve the connection efficiency of articles, the body of bolt uses the restriction of connecting length by its production length.

The prior art has the following publication numbers: the bolt with adjustable length is provided by the utility model patent of CN 210919727U, and comprises a bolt rod and a bolt head, wherein a positioning hole and a storage groove are sequentially formed in the bolt rod from left to right, and one end of an elastic piece is connected to the inside of the storage groove; but its regulation structural stability is not good, it is not good to carry out elasticity shrink fastening effect through the spring only, the inside corrosion damage of bolt or the broken scheduling problem of spring appear easily, influence the normal use of bolt, it does not possess the spiral shell head part dismantlement ability to the bolt in the same time, under the on-the-spot instrument not enough circumstances, if not with the instrument of spiral shell head matching, will not dismantle it for the work progress receives the influence, when the bolt of smooth silk is facing, only can't effectively pull out it through its outside spiral shell head, will lead to can't dismantle or reinstallate equipment to fixed equipment, the reliability of bolt has been reduced, consequently, we need upgrade and reform transform on prior art's basis, in order to overcome its problem and not enough.

Disclosure of Invention

The utility model aims to provide a bolt with adjustable length, so as to solve the problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a bolt of adjustable length, includes the device body, the device body contains screw rod, outer hexagonal spiral shell head, interior hexagonal spiral shell head and hand pull rod, the screw rod upper end is provided with the center pole, center groove has been seted up to outer hexagonal spiral shell head bottom fixedly connected with spliced pole and spliced pole lower extreme, center pole grafting is in center groove, the spliced pole outside is equipped with external screw thread and external screw thread on the spiro union have the nut, nut rotation spiro union is between external screw thread and screw rod, the inside rotation of outer hexagonal spiral shell head is equipped with gear and gear outside meshing has the rack bar, interior hexagonal spiral shell head bottom is fixed with go-between and go-between inboard has seted up the spliced eye, hand pull rod lower extreme is equipped with the go-between equally, the cover is established on outer hexagonal spiral shell head to the go-between detachable cover.

Further, the top of the screw is also provided with a plurality of auxiliary rods, and the outer side of the central groove is provided with an auxiliary groove which corresponds to the auxiliary rods.

Further, the gear upper end fixedly connected with antiskid knob, antiskid knob rotates and is located outer hexagonal screw head upper end.

Furthermore, a countersunk head groove is formed in the center of the upper end of the outer hexagonal screw head, and the anti-slip knob is rotationally positioned in the countersunk head groove.

Further, the rack bar is provided with three groups, the inserting holes are provided with three groups, and the three groups of rack bars are respectively inserted with the three groups of inserting holes correspondingly.

Further, a through hole is formed in the center of the inner hexagonal screw head, and the through hole corresponds to the center of the outer hexagonal screw head.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the gear, the rack rod, the anti-skid knob, the connecting ring, the inserting hole, the inner hexagonal screw head and the hand pulling rod are arranged in the device, so that the connecting ring and the outer hexagonal screw head can be fixedly connected, the inner hexagonal screw head or the hand pulling rod can be conveniently arranged on the outer hexagonal screw head, different use requirements can be conveniently met, and the practicability and the operability of the bolt are improved.

2. According to the utility model, the screw, the central rod, the auxiliary rod, the central groove, the auxiliary groove, the connecting column, the external threads and the nuts are arranged in the device, so that the screw and the external hexagonal screw head can be quickly assembled, disassembled and assembled, the screws with different length and size can be conveniently replaced, the applicability of the bolts is improved, and the problem that the screw is insufficient in length and needs to be integrally replaced when in use is solved.

Specific embodiments of the utility model are disclosed in detail below with reference to the following description and drawings, indicating the manner in which the principles of the utility model may be employed. It should be understood that the embodiments of the utility model are not limited in scope thereby. The embodiments of the utility model include many variations, modifications and equivalents within the spirit and scope of the appended claims.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a schematic view of a hand shank bit of a bolt of adjustable length according to the present utility model;

FIG. 2 is a schematic view of the configuration of the hexagon socket head cap of a bolt with adjustable length according to the present utility model;

FIG. 3 is an exploded view of the shank structure of a bolt of adjustable length according to the present utility model;

FIG. 4 is an exploded view of the external hex head of a bolt with adjustable length according to the present utility model;

fig. 5 is an exploded view of the internal hexagonal head structure of a length adjustable bolt according to the present utility model.

In the figure: 1. a device body; 2. a screw; 3. an outer hexagonal screw head; 4. a central rod; 5. an auxiliary lever; 6. a connecting column; 7. a central slot; 8. an auxiliary groove; 9. an external thread; 10. a nut; 11. a gear; 12. a rack bar; 13. an anti-slip knob; 14. a countersunk head groove; 15. an internal hexagonal screw head; 16. a hand pull rod; 17. a connecting ring; 18. a plug hole; 19. and a through hole.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

As shown in fig. 1-5, the designed bolt with adjustable length provided in this embodiment includes a device body 1, the device body 1 includes a screw rod 2, an external hexagonal screw head 3, an internal hexagonal screw head 15 and a hand pull rod 16, the upper end of the screw rod 2 is provided with a central rod 4, the bottom of the external hexagonal screw head 3 is fixed with a connecting column 6, the lower end of the connecting column 6 is provided with a central groove 7, the central rod 4 is inserted in the central groove 7, the top of the screw rod 2 is also provided with a plurality of auxiliary rods 5, the outer side of the central groove 7 is provided with an auxiliary groove 8 and the auxiliary groove 8 corresponds to the auxiliary rod 5, the outer side of the connecting column 6 is provided with an external thread 9 and a nut 10 is screwed on the external thread 9, the nut 10 is screwed between the external thread 9 and the screw rod 2, the internal rotation of the external hexagonal screw head 3 is provided with a gear 11 and the external gear 11 is meshed with a rack bar 12, the bottom of the internal hexagonal screw head 15 is fixed with a connecting ring 17 and the inner side of the connecting ring 17 is provided with an insertion hole 18, the lower end of the hand pull rod 16 is also provided with a connecting ring 17, and the connecting ring 17 is detachably sleeved on the external hexagonal screw head 3.

Preferably, the gear 11 upper end fixedly connected with antiskid knob 13, antiskid knob 13 rotate and are located outer hexagonal screw head 3 upper end, and countersunk head groove 14 has been seted up at outer hexagonal screw head 3 upper end center, and antiskid knob 13 rotates and is located countersunk head groove 14, is convenient for control gear 11 through antiskid knob 13 and rotates, is convenient for hide antiskid knob 13 through countersunk head groove 14.

Preferably, the rack bar 12 is provided with three groups, the inserting holes 18 are provided with three groups, the three groups of rack bars 12 are respectively inserted into the three groups of inserting holes 18 correspondingly, the center of the inner hexagonal screw head 15 is provided with a through hole 19, the through hole 19 corresponds to the center of the outer hexagonal screw head 3, the connecting ring 17 is conveniently fixed on the outer hexagonal screw head 3 through the rack bar 12 and the inserting holes 18, and the anti-slip knob 13 is conveniently operated by passing through the inner hexagonal screw head 15 through the through hole 19.

The application principle and the application flow of the utility model are as follows: during the use, the nut 10 is rotated, the nut 10 is completely adjusted to the connecting column 6 through the external thread 9, the screw rod 2 can be pulled out from the lower end of the connecting column 6 at this time, the central rod 4 and the auxiliary rod 5 are respectively separated from the central groove 7 and the auxiliary groove 8, the screw rod 2 with different length sizes can be replaced at this time, then the connecting ring 17 is connected with the outer hexagonal screw head 3 in a plugging mode through reverse operation, the nut 10 and the connecting column 6 are fixedly connected, the whole naked sense length is increased or reduced at this time, different use requirements can be met, in the use process, if the bolt is in a sliding wire problem, the hand pull rod 16 is sleeved on the outer hexagonal screw head 3 through the connecting ring 17, then the anti-slip knob 13 is rotated, the gear 11 is driven to rotate by the anti-slip knob 13, the gear 11 drives the rack rod 12 meshed at the outer side, the rack rod 12 stretches out from the inner side of the outer hexagonal screw head 3 and is plugged into the inner side plugging hole 18 of the connecting ring 17, the connecting ring 17 is fixedly connected with the outer hexagonal screw head 3 through the hand pull rod 16, the hand pull rod 16 rotates, the user can conveniently pull the sliding wire can be pulled out by facing the hexagonal screw head through the hand pull rod 17 when the hexagonal screw head is not fixed by using the tool, the inner hexagonal head tool can be dismounted, and the operation of the wrench can be conveniently dismounted on the outer hexagonal screw head 3 through the tool at this time, and the inner wrench can be conveniently dismounted.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to specific circumstances.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

Claims (6)

1. The utility model provides a bolt of adjustable length which characterized in that: including device body (1), device body (1) contains screw rod (2), outer hexagonal screw head (3), interior hexagonal screw head (15) and hand lever (16), screw rod (2) upper end is provided with well core rod (4), well core rod (7) have been seted up to outer hexagonal screw head (3) bottom is fixed with spliced pole (6) and spliced pole (6) lower extreme, well core rod (4) are pegged graft in well core rod (7), the spiro union has nut (10) on spliced pole (6) outside is equipped with external screw thread (9) and external screw thread (9), nut (10) rotatory spiro union is between external screw thread (9) and screw rod (2), the inside rotation of outer hexagonal screw head (3) is equipped with gear (11) and gear (11) outside meshing has rack bar (12), interior hexagonal screw head (15) bottom is fixed with go-between (17) and go-between (17) inboard the having seted up spliced eye (18), hand lever (16) lower extreme is equipped with go-between (17) and can be dismantled on outer spiral shell head (3).

2. A length adjustable bolt according to claim 1, wherein: the top of the screw rod (2) is also provided with a plurality of auxiliary rods (5), an auxiliary groove (8) is arranged outside the central groove (7), and the auxiliary groove (8) corresponds to the auxiliary rods (5).

3. A length adjustable bolt according to claim 1, wherein: the upper end of the gear (11) is fixedly connected with an anti-slip knob (13), and the anti-slip knob (13) is rotationally positioned at the upper end of the outer hexagonal screw head (3).

4. A length adjustable bolt according to claim 3, wherein: the center of the upper end of the outer hexagonal screw head (3) is provided with a countersunk head groove (14), and the anti-slip knob (13) is rotationally positioned in the countersunk head groove (14).

5. A length adjustable bolt according to claim 1, wherein: the rack bar (12) is provided with three groups, the inserting holes (18) are provided with three groups, and the three groups of rack bars (12) are respectively inserted with the three groups of inserting holes (18) correspondingly.

6. A length adjustable bolt according to claim 1, wherein: the center of the inner hexagonal screw head (15) is provided with a through hole (19), and the through hole (19) corresponds to the center of the outer hexagonal screw head (3).