CN219967778U - Screw spanner at groove - Google Patents

Abstract

The utility model provides a thread wrench at a groove, which belongs to the technical field of mechanical wrenches and comprises a shell, wherein the shell is rotationally connected with a main gear, and an inner hexagonal hole is formed in the main gear; the shell is also provided with a rotary auxiliary gear, and the main gear is meshed with the auxiliary gear; the screw rod is provided with a first through hole for penetrating the screw rod through the shell, the inner hexagonal hole in the main gear is attached to the screw cap and limits the position of the screw cap, the main gear is driven to rotate by the auxiliary gear through rotating the auxiliary gear, so that the screw cap in the main gear rotates along with the screw cap, the screw cap is gradually loosened to unscrew the screw cap from the screw reinforcement.

Description

Screw spanner at groove

Technical Field

The utility model belongs to the technical field of mechanical wrenches, and particularly relates to a groove thread wrench.

Background

A wrench is a commonly used installation and removal tool, and is a hand tool that uses the principle of leverage to turn bolts, screws, nuts, and other threads to tighten the openings or trepanning fasteners of the bolts or nuts.

The conventional wrench is difficult to disassemble and install in a limited space, for example, in the environment that the screw steel bar and the screw cap in the groove are connected in the specification of fig. 1, the conventional wrench is used for disassembly, as the wrench handle is too long and cannot be unfolded in the space, the wrench is inconvenient to bear force, another socket wrench convenient to replace the socket is disclosed in the patent document of the grant publication No. CN 206952846U, the socket wrench of the type can be used for disassembling the screw cap with a short screw steel base wound in the groove, and when the screw steel bar is too long, the socket wrench is difficult to be suitable for use; therefore, a wrench that can be used in a limited space such as a recess is required.

Disclosure of Invention

In order to solve the problems in the prior art, a thread wrench at a groove is provided. The utility model has a relatively simple integral structure and adopts a manual mode, and the technical problems of inconvenient operation in narrow spaces such as grooves and the like in the background technology can be effectively solved by driving the gear to rotate through the rotation of the pinion to screw the nut.

The technical scheme adopted for solving the technical problems is as follows:

the utility model provides a groove thread wrench, which comprises a shell, wherein the shell is rotationally connected with a main gear, and an inner hexagonal hole is formed in the main gear; the shell is also provided with a rotatable pinion, and the main gear is meshed with the pinion; the shell is also provided with a first through hole; the inner hexagonal hole and the first through hole are used for allowing the screw thread reinforcing steel bars to penetrate through the shell.

Preferably, the shell is provided with a second through hole positioned above the pinion, and the pinion is provided with a plug hole; the handle penetrates through the second through hole and is spliced with the splicing hole.

Preferably, the plug holes are of a hexagonal structure; the bottom of the handle is of a hexagonal structure matched with the inserting holes, and an L-shaped structure is arranged above the handle.

Preferably, the device comprises a first bearing connected with the shell, wherein the outer ring of the first bearing is connected with the shell, and the inner ring of the first bearing is connected with the main gear; the gear box further comprises a second bearing connected with the shell, wherein the outer ring of the second bearing is connected with the shell, and the inner ring of the second bearing is connected with the pinion.

Preferably, at least one slot is formed in the shell, and the slot is distributed along the circumferential direction of the first through hole; the inserting rod is inserted into the inserting groove.

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

1. the device includes the casing, casing swivelling joint has engaged with master gear and pinion, wherein has seted up interior hexagonal hole in the master gear, and the first through-hole that supplies the screw thread reinforcing bar to pass the casing has been seted up to the casing, and through interior hexagonal hole in the master gear and laminating of nut and restriction nut's position, rotatory pinion, pinion drive the master gear rotatory make in the master gear nut follow its rotation, become flexible gradually and unscrew the nut from the screw thread reinforcing bar, avoided the condition that the nut spanner was restricted when spanner handle overlength and reinforcing bar overlength.

2. The casing is provided with a plurality of slot in this device, the slot is laid along the through-hole circumference, peg graft on the slot has the inserted bar, when this device is in recess internal rotation screwing pinion, the condition that the device can't be to the nut atress around the screw-thread bar rotation is produced easily under the condition that there is external force interference, in the course of the work generally through holding this equipment to the restriction of its position in the recess of going on, the device is held a bit inconveniently through the hand, therefore the detachable inserted bar has been designed, the position relative fixed with inserted bar and screw-thread bar through methods such as grip, this device has the stress point at this moment, just can make the nut loosen and screw down from the screw-thread bar through rotatory pinion.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic view of an environment for implementing an embodiment of the present utility model.

Fig. 2 is a schematic perspective view of a first embodiment of the present utility model.

Fig. 3 is a schematic perspective view of a first embodiment of the present utility model.

FIG. 4 is a schematic view of an environment for implementing a second embodiment of the present utility model.

Fig. 5 is a schematic perspective view of a second embodiment of the present utility model.

Reference numerals illustrate:

1-a housing; 2-a main gear; 3-inner hexagonal holes; 4-pinion gear; 5-a first through hole; 8-a first bearing; 9-a second bearing; 10-a second through hole; 11-plug holes; 12-handle; 13-slots; 14-inserting a rod; 15-screw cap; 16-screw steel bar.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

Example 1

As shown in fig. 1-3, the embodiment provides a screw wrench at a groove, which comprises a casing 1, wherein in the embodiment, the casing 1 is of a cam-shaped structure, so that the screw wrench is convenient to move in a narrow space, the casing 1 is rotationally connected with a main gear 2, the main gear 2 is provided with an inner hexagonal hole 3, the inner hexagonal hole 3 is used for clamping a conventional hexagonal nut 15, the casing 1 is also provided with a rotary auxiliary gear 4, the main gear 2 is meshed with the auxiliary gear 4, and the casing 1 is also provided with a first through hole 5; the inner hexagonal hole 3 and the first through hole 5 are used for allowing the screw reinforcing steel bar 16 to penetrate through the shell 1; the main gear 2 meshed with the main gear is driven to rotate through the rotation of the auxiliary gear 4, the nut 15 is sleeved in the main gear 2, and as the inner hexagonal hole 3 is formed in the main gear 2, the nut 15 is matched with the hexagonal nut 15, so that slipping and other phenomena cannot occur in the screwing process, when the main gear 2 rotates to drive the nut 15 to rotate, the nut 15 is gradually separated from the screw reinforcement 16 in the rotating process, the length of the screw reinforcement 16 generally penetrates through the nut and extends to a part, the screw reinforcement 16 penetrates through the main gear 2 in the device and the first through hole 5 on the shell 1, and slides in the first through hole 5 and the inner hexagonal hole 3, so that the inner hexagonal hole 3 in the device can slide downwards until the nut 15 is coated and the nut 15 is driven to rotate.

Further, the bearing comprises a first bearing 8 connected with the shell 1, the bearing generally comprises a bearing outer ring and a bearing inner ring, rolling steel balls are connected between the bearing inner ring and the bearing outer ring, and the inner rolling steel balls enable the bearing inner ring and the bearing outer ring to rotate respectively; the outer ring of the first bearing 8 is connected with the shell 1, and the inner ring of the first bearing 8 is connected with the main gear 2 so that the main gear 2 rotates under the shell 1; the device also comprises a second bearing 9 connected with the shell 1, wherein the outer ring of the second bearing 9 is connected with the shell 1, and the inner ring of the second bearing 9 is connected with the pinion 4; the inner ring of the bearing can rotate on the shell 1 through the fixation of the outer ring of the first bearing 8 and the shell 1, and the inner ring of the bearing is connected with the main gear 2 so that the main gear 2 can rotate below the shell 1; the outer ring of the second bearing 9 is fixed on the shell 1, so that the inner ring of the bearing can rotate on the shell 1, and when the pinion 4 rotates, the main gear 2 meshed with the pinion is driven to rotate, and the main gear cannot interfere with the shell 1 in the rotating process through the bearing; the bearings in the embodiment are all connected with the shell 1 through bearing seats, wherein the inner ring of each bearing is fixed with the main gear 2 and the auxiliary gear 4 in a welding mode; in the present embodiment, the contact friction between the main gear 2 and the pinion 4 and the outer race in the first bearing 8 and the second bearing 9 is prevented from generating loss, and the extension plates are welded between the first bearing 8 and the main gear 2 and between the second bearing 9 and the pinion 4.

The device has a plurality of modes for driving the auxiliary gear 4 to rotate, for example, the auxiliary gear 4 in the groove is manually rotated to drive the main gear 2 to rotate so as to detach or mount the screw cap 15; or the main gear 2 is driven to rotate by the meshing of other driving auxiliary gears 4; in the embodiment, the handle 12 is adopted to drive the pinion 4 to rotate, the shell 1 is provided with a second through hole 10 for driving the pinion 4 to rotate, and the pinion 4 is provided with a plug hole 11; the device further comprises a handle 12 penetrating the second through hole 10 and being spliced with the splicing hole 11, the pinion 4 is driven to rotate by rotating the handle 12, the splicing hole 11 comprises but is not limited to a hexagonal hole-shaped structure, a quadrilateral hole-shaped structure and a triangular hole-shaped structure, the uniformity of the transmission force of the device can be better and relatively more stable through the structure, and in the embodiment, the splicing hole 11 is preferably of a hexagonal structure; the bottom of the handle 12 is of a hexagonal structure matched with the plug hole 11, the upper side of the handle 12 is of an L-shaped structure, the hexagonal structure can better limit the position of the handle 12 inside to enable the handle to be stressed more, and meanwhile, the handle 12 is of an L-shaped columnar structure and can drive the main gear 2 to rotate by rotating the auxiliary gear 4 from the upper side to achieve the installation and the disassembly of the screw cap 15.

The working principle of the device is as follows:

the inner hexagonal hole 3 and the first through hole 5 in the device are downwards moved along the outside of the threaded steel bar 16 until the inner hexagonal hole 3 in the main gear 2 is attached to the side wall of the screw cap 15, then the handle 12 is inserted into the inserting hole 11, then the handle 12 is rotated to enable the auxiliary gear 4 in the interior to rotate, the second bearing 9 is connected between the auxiliary gear 4 and the shell, the influence on the shell is avoided when the auxiliary gear 4 rotates, the rotation of the auxiliary gear 4 drives the main gear 2 meshed with the auxiliary gear to rotate, and the screw cap 15 attached to the inner hexagonal hole 3 is driven to rotate when the main gear 2 rotates, so that the screw cap 15 gradually rotates and is separated from the threaded steel bar 16, and the condition that a screw cap 15 is limited in a spanner when the spanner handle 12 is overlong and the steel bar is overlong is avoided.

Example two

As shown in fig. 4-5, this embodiment proposes a thread wrench at a groove, and other structures are the same as those of the first embodiment, except that in this embodiment, at least one slot 13 is provided on the housing 1, and the slots 13 are circumferentially arranged along the first through hole 5; the inserting rod 14 is inserted into the inserting groove 13, so that the position of the shell 1 is limited by manual limitation or other limitation methods in consideration of the fact that the position of the shell 1 is limited by the general manual limitation or other limitation methods, the handle 12 is convenient to be used for screwing the pinion 4 in the follow-up process, the pinion 4 is stressed better, in a special limited space, such as a narrow groove and other environments, manual hand-held operation cannot be inserted into the special limited space to fix the shell 1, and therefore the inserting rod 14 is arranged, and the position of the shell 1 is fixed by manually holding the inserting rod 14 and the threaded steel bar 16, so that the pinion 4 is stressed better; it should be noted that the slot 13 and the plunger 14 in the device may be prevented from being fixed therein by magnetic attraction or clamping.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (5)

1. Groove part screw spanner, its characterized in that:

comprises a shell (1), wherein the shell (1) is rotationally connected with a main gear (2), and an inner hexagonal hole (3) is formed in the main gear (2); the shell (1) is also provided with a rotatable pinion (4), and the main gear (2) is meshed with the pinion (4); the shell (1) is also provided with a first through hole (5); the inner hexagonal hole (3) and the first through hole (5) are used for allowing a screw reinforcement (16) to penetrate through the shell (1).

2. The groove thread wrench of claim 1, wherein: the shell (1) is provided with a second through hole (10) positioned above the pinion (4), and the pinion (4) is provided with a plug hole (11); the handle (12) penetrates through the second through hole (10) and is spliced with the splicing hole (11).

3. The groove thread wrench of claim 2, wherein: the plug hole (11) is of a hexagonal structure; the bottom of the handle (12) is of a hexagonal structure matched with the plug hole (11), and the upper part of the handle (12) is of an L-shaped structure.

4. The groove thread wrench of claim 1, wherein: the gear comprises a first bearing (8) connected with a shell (1), wherein an outer ring of the first bearing (8) is connected with the shell (1), and an inner ring of the first bearing (8) is connected with a main gear (2); the novel gear box further comprises a second bearing (9) connected with the shell (1), wherein the outer ring of the second bearing (9) is connected with the shell (1), and the inner ring of the second bearing (9) is connected with the pinion (4).

5. The groove thread wrench of claim 1, wherein: the shell (1) is provided with at least one slot (13), and the slots (13) are circumferentially distributed along the first through hole (5); the inserting groove (13) is inserted with an inserting rod (14).