CN221857456U - Extendable rotary worm - Google Patents

Abstract

The utility model relates to the technical field of worms, in particular to an extendable rotary worm, which comprises a first worm and a second worm arranged at the rear end of the first worm, wherein an extension worm is arranged between the first worm and the second worm, a splicing mechanism is arranged between the extension worm and the first worm and between the extension worm and the second worm, and the contact between an annular groove and an annular block and the meshing transmission between a main gear and a slave gear are realized by using the structural design in the splicing mechanism, so that a clamping column is in screwed connection with a bidirectional screw and is clamped with a clamping hole, the purpose of fastening and installing the extension worm is achieved, the fastening state between the extension worm and the first worm and the second worm is ensured, the subsequent use of the worm is facilitated, and the practical effect of the worm is improved.

Description

An extendable rotating worm

Technical Field

The utility model relates to the technical field of worms, in particular to an extendable rotating worm.

Background Art

With the rapid development of current industry, the use of worm gears has become particularly frequent, and a large number of various worm gear transmissions are used in almost all industries.

A currently used extendable rotating worm gear has been searched and found that the utility model with patent publication number CN207393901U discloses an extendable rotating worm gear, which includes a worm gear and a worm extension rod. The worm gear is provided with worm gear teeth. The worm gear consists of a front half worm gear and a rear half worm gear which are combined and connected with each other. The front half worm gear and the rear half worm gear are connected by a detachable worm gear assembly device. The worm gear assembly device includes a connecting groove and a connecting block. The connecting groove and the connecting block are respectively arranged on the connecting end faces of the front half worm gear and the rear half worm gear. The connecting block is embedded in the connecting groove. A fastening device is provided between the connecting groove and the connecting block. The worm gear can be extended to any length by simple splicing to meet specifications under different requirements and improve the adaptability of the worm gear.

Although the above patent solves the problems in the above-mentioned background technology, it still has the following shortcomings: the worm relies on a tightening screw, a tightening block and a tightening sleeve to achieve the connection and fixation between the worm extension rod and the worm. This connection method is too simple and the fixing effect is poor. Therefore, when in use, it is easy to cause shaking between the worm extension rod and the worm, which is not conducive to the subsequent use of the worm and reduces the practical effect of the worm.

In summary, the present invention solves the problems in the above-mentioned background technology by designing an extendable rotating worm.

Utility Model Content

The purpose of the utility model is to provide an extendable rotating worm to solve the problems raised in the above-mentioned background technology.

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

An extendable rotating worm, comprising a first worm and a second worm arranged at the rear end of the first worm, an extended worm is arranged between the first worm and the second worm, and a splicing mechanism is arranged between the extended worm and the first and second worms;

The splicing mechanism includes an annular groove, a limiting groove and an annular block, the annular groove and the limiting groove are respectively opened at the rear end of the No. 1 worm and the rear end surface of the extended worm, the inner surfaces of the limiting grooves are respectively opened with clamping holes, the annular blocks are respectively fixedly installed on the front end of the extended worm and the front end surface of the No. 2 worm, and the outer surfaces thereof are fixedly provided with limiting blocks, the top surface of the limiting block is embedded with a fastening screw rod movably arranged, the bottom end of the fastening screw rod is fixedly sleeved with a main gear, the interior of the limiting block is opened with an installation cavity, the interior of the installation cavity is movably provided with a bidirectional screw rod through a rotating member, and the outer sides of the bidirectional screw rod are respectively sleeved with a slave gear and a clamping column.

As a preferred solution of the utility model, the shaft diameters of the first worm, the second worm and the extended worm are all the same.

As a preferred solution of the utility model, the outer sides of the No. 1 worm, the No. 2 worm and the extended worm are all provided with thread teeth with the same pitch.

As a preferred solution of the utility model, the cross-sectional shape of the annular groove matches the annular block.

As a preferred solution of the utility model, the annular groove is symmetrically distributed about the inner center axis of the limiting groove, the limiting block is symmetrically arranged about the inner center axis of the annular block, and its outer surface is in close contact with the inner wall of the limiting groove.

As a preferred solution of the utility model, the bottom end surface of the fastening screw rod extends to the inner top end of the installation cavity, and the slave gear is meshedly connected with the master gear.

As a preferred solution of the utility model, the clamping column is respectively located at the left and right ends of the bidirectional screw, and its inner wall is threadedly connected to the outer surface of the bidirectional screw. The left end of the clamping column fits through the left inner wall of the installation cavity and extends outward, and it is clamped and connected with the inner wall of the clamping hole.

Compared with the prior art, the beneficial effects of the utility model are:

In the utility model, an extendable rotating worm is provided, thereby utilizing the structural design in the splicing mechanism to realize the contact between the annular groove and the annular block and the meshing transmission between the main gear and the slave gear, so that the clamping column and the bidirectional screw are screwed together and clamped with the clamping hole, thereby achieving the purpose of fastening and installing the extended worm, ensuring the fastening state between the extended worm and the No. 1 worm and the No. 2 worm, facilitating the subsequent use of the worm, and improving the practical effect of the worm.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a schematic diagram of the overall structure of the utility model;

FIG2 is a schematic structural diagram of a worm gear No. 1 of the utility model;

FIG3 is a schematic structural diagram of the second worm gear of the utility model;

FIG4 is a schematic diagram of a partial exploded structure of an extended worm of the present invention;

FIG5 is a schematic diagram of the cross-sectional structure of the limit block of the utility model.

In the figure: 1. Worm No. 1; 2. Worm No. 2; 3. Extended worm; 4. Splicing mechanism; 401. Annular groove; 402. Limiting groove; 403. Annular block; 404. Clamping hole; 405. Limiting block; 406. Fastening screw; 4061. Main gear; 407. Mounting cavity; 408. Bidirectional screw; 409. Slave gear; 410. Clamping column.

DETAILED DESCRIPTION

The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings, and several embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may also be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and/or" used in this article includes any and all combinations of one or more related listed items.

For the embodiment, please refer to Figures 1-5. The utility model provides a technical solution:

An extendable rotating worm, comprising a first worm 1 and a second worm 2 arranged at the rear end of the first worm 1, an extended worm 3 is arranged between the first worm 1 and the second worm 2, and a splicing mechanism 4 is arranged between the extended worm 3 and the first worm 1 and the second worm 2;

Specifically, the shaft diameters of the first worm 1, the second worm 2 and the extended worm 3 are the same, and the outer sides of the first worm 1, the second worm 2 and the extended worm 3 are all provided with thread teeth with the same pitch;

In this embodiment, the extended worm 3 is mainly used to contact the first worm 1 and the second worm 2, thereby achieving the effect of extending the worm, which is convenient for subsequent adjustment of the length of the worm according to needs.

In this embodiment, please refer to Figures 1, 4 and 5. The splicing mechanism 4 includes an annular groove 401, a limiting groove 402 and an annular block 403. The annular groove 401 and the limiting groove 402 are respectively arranged at the rear end of the No. 1 worm 1 and the rear end surface of the extended worm 3. The inner surface of the limiting groove 402 is respectively provided with a clamping hole 404. The annular block 403 is respectively fixedly installed at the front end of the extended worm 3 and the front end surface of the No. 2 worm 2, and a limiting block 405 is fixedly arranged on the outer surface thereof. A fastening screw 406 is movably embedded in the top surface of the limiting block 405. A main gear 4061 is fixedly sleeved at the bottom end of the fastening screw 406. An installation cavity 407 is arranged inside the limiting block 405. A bidirectional screw 408 is movably arranged inside the installation cavity 407 through a rotating member. A slave gear 409 and a clamping column 410 are respectively sleeved on the outer side of the bidirectional screw 408.

Specifically, the cross-sectional shape of the annular groove 401 matches the annular block 403, the annular groove 401 is symmetrically distributed about the inner center axis of the limiting groove 402, the limiting block 405 is symmetrically arranged about the inner center axis of the annular block 403, and its outer surface is in close contact with the inner wall of the limiting groove 402, the bottom end surface of the fastening screw 406 extends to the inner top of the installation cavity 407, the slave gear 409 is meshed and connected with the main gear 4061, the clamping column 410 is respectively located at the left and right ends of the bidirectional screw 408, and its inner wall is threadedly connected with the outer surface of the bidirectional screw 408, the left end of the clamping column 410 is in close contact with the left inner wall of the installation cavity 407 and extends outward, and it is clamped and connected with the inner wall of the clamping hole 404;

In this embodiment, the annular groove 401 is mainly used to contact the annular block 403, and the fitting setting of the limit groove 402 and the limit block 405 is mainly used to limit the displacement of the annular block 403. A straight groove is provided on the top surface of the fastening screw 406, and it can drive the main gear 4061 and the slave gear 409 to engage and transmit. With the threaded cooperation of the bidirectional screw 408 and the clamping column 410, the clamping column 410 and the clamping hole 404 are clamped together, thereby achieving the effect of fastening and installing the extended worm 3, meeting the use requirements of the worm.

The working process of the utility model is as follows: when using an extendable rotating worm, the worm is extended, and the extended worm 3 is first moved to make the annular block 403 close to and contact the annular groove 401, and the limit block 405 gradually contacts the limit groove 402 as the annular block 403 moves. When the limit block 405 is completely in contact with the limit groove 402, the tightening screw 406 can be driven through the slotted groove, and the tightening screw 406 drives the main gear 4061 to rotate, and the main gear 4061 meshes and drives the slave gear 409. The two-way screw 408 rotates, and the gear 409 drives the two-way screw 408 to rotate. Under the thread cooperation of the two-way screw 408 and the clamping column 410, the clamping column 410 moves along the inner wall of the installation cavity 407 and gradually contacts with the clamping hole 404, thus completing the installation of the extended worm 3. Then the No. 2 worm 2 is brought close to the extended worm 3 and the above operation is repeated to install the No. 2 worm 2, ensuring the fastening state between the extended worm 3, the No. 2 worm 2 and the No. 1 worm 1, thereby completing the extension operation of the worm and improving the practical effect of the worm.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims (7)

1. The utility model provides a rotatory worm that can prolong, includes worm (1) and sets up No. two worm (2) at worm (1) rear end, its characterized in that: an extension worm (3) is arranged between the first worm (1) and the second worm (2), and a splicing mechanism (4) is arranged between the extension worm (3) and the first worm (1) and between the extension worm and the second worm (2);

The splicing mechanism (4) comprises an annular groove (401), a limit groove (402) and an annular block (403), the annular groove (401) and the limit groove (402) are respectively formed in the rear end of a first worm (1) and the rear end surface of an extension worm (3), clamping holes (404) are respectively formed in the inner side surface of the limit groove (402), the annular block (403) is respectively fixedly mounted at the front end of the extension worm (3) and the front end surface of a second worm (2), a limiting block (405) is fixedly arranged on the outer side surface of the annular block, a fastening screw (406) is movably arranged on the top surface of the limiting block (405), a main gear (4061) is arranged on the bottom fixing sleeve of the fastening screw (406), a mounting cavity (407) is formed in the inner side of the limiting block (405), a bidirectional screw (408) is movably arranged in the inner side of the mounting cavity through a rotating piece, and a slave gear (409) and a clamping column (410) are respectively sleeved on the outer side of the bidirectional screw (408).

2. An extendable rotary worm as claimed in claim 1, wherein: the diameters of the first worm (1), the second worm (2) and the extension worm (3) are the same.

3. An extendable rotary worm as claimed in claim 1, wherein: the outer sides of the first worm (1), the second worm (2) and the extension worm (3) are respectively provided with thread teeth with the same tooth pitch.

4. An extendable rotary worm as claimed in claim 1, wherein: the cross-sectional shape of the annular groove (401) is matched with that of the annular block (403).

5. An extendable rotary worm as claimed in claim 1, wherein: the annular groove (401) is distributed in bilateral symmetry about the inner central axis of the limit groove (402), the limit block (405) is arranged in bilateral symmetry about the inner central axis of the annular block (403), and the outer side surface of the limit block is in fit contact with the inner wall of the limit groove (402).

6. An extendable rotary worm as claimed in claim 1, wherein: the bottom end surface of the fastening screw rod (406) extends to the inner top end of the mounting cavity (407), and the slave gear (409) is in meshed connection with the master gear (4061).

7. An extendable rotary worm as claimed in claim 1, wherein: the clamping columns (410) are respectively positioned at the left end and the right end of the bi-directional screw rod (408), the inner walls of the clamping columns are in threaded connection with the outer side surfaces of the bi-directional screw rod (408), the left ends of the clamping columns (410) are attached and penetrate through the left inner wall of the mounting cavity (407) and extend outwards, and the clamping columns are connected with the inner wall of the clamping hole (404) in a clamping mode.