CN220037193U

CN220037193U - Positioning device

Info

Publication number: CN220037193U
Application number: CN202321625789.0U
Authority: CN
Inventors: 许正宏; 许旭
Original assignee: Nantong Shunlong Rehabilitation Equipment Co ltd
Current assignee: Nantong Shunlong Rehabilitation Equipment Co ltd
Priority date: 2023-06-26
Filing date: 2023-06-26
Publication date: 2023-11-17
Anticipated expiration: 2033-06-26

Abstract

The utility model relates to a positioning device, which is suitable for the field of machinery. In order to solve the inconvenience that the bolt can only be integrally pulled out and placed elsewhere when the bolt is not used in the process of using the bolt as the positioning device in the prior art, the utility model comprises the bolt, a spring, a middle piece, a top piece and a fixing piece; the upper end of the bolt sequentially passes through the spring, the middle piece and the top piece and is fixedly connected with the fixing piece; the lower end of the bolt is provided with an annular bulge, and the diameter of the annular bulge is larger than that of the spring; the spring is arranged in the middle piece, and the upper end of the spring is propped against the upper surface of the inner part of the middle piece; the upper part of the middle piece is provided with two symmetrically distributed grooves, the lower part of the top piece is provided with two symmetrically distributed protrusions, and the size of each protrusion is not larger than that of each groove. The bolt in the utility model does not need to be integrally pulled out and placed elsewhere when not in use, but only needs to be pulled one time and rotated one time, and the operation is simple and convenient and the bolt is not easy to lose.

Description

Positioning device

Technical Field

The utility model relates to the field of machinery, in particular to a positioning device.

Background

The traditional positioning device generally uses a bolt, and the bolt is movably connected with a part to be fixed in a split mode, and the defect is that the bolt is generally only in two states of insertion or extraction, when the bolt needs to be extracted, the bolt is generally selected to be integrally extracted, placed in other places, and then is taken to be inserted when the bolt needs to be extracted, so that the operation is very inconvenient.

Disclosure of Invention

The utility model aims to provide a positioning device which improves convenience.

The specific technical scheme of the utility model is as follows:

a positioning device comprises a bolt, a spring, a middle piece, a top piece and a fixing piece; the upper end of the bolt sequentially passes through the spring, the middle piece and the top piece and is fixedly connected with the fixing piece; the lower end of the bolt is provided with an annular bulge, and the diameter of the annular bulge is larger than that of the spring; the spring is arranged inside the middle piece, and the upper end of the spring is propped against the upper surface of the inside of the middle piece; the upper part of the middle piece is provided with two symmetrically distributed grooves, the lower part of the top piece is provided with two symmetrically distributed protrusions, and the size of each protrusion is not larger than that of each groove.

It should be noted that, one end of the spring is propped against the annular bulge, the other end is propped against the upper surface of the inside of the middle piece, the top piece is integrated with the bolt, the middle piece is fixed, when the user lifts the top piece upwards, the bolt is driven to lift upwards until the bulge slides out of the groove, at this time, the spring is compressed, the user rotates the top piece by a certain angle again, the bulge and the groove are misplaced, at this time, the user releases the top piece, then the top piece and the bolt move downwards under the action of the elasticity of the spring until the bulge is clamped at the upper edge of the middle piece, and the effect that the bolt is pulled upwards and automatically maintains a static state is achieved. On the contrary, when the bolt is required to be inserted downwards, the top piece is rotated until the protrusion is aligned with the groove, and at the moment, the top piece is loosened, and then the bolt and the top piece move downwards under the action of the elasticity of the spring until the protrusion is clamped at the bottom of the groove.

Further, a gasket is arranged at the lower end of the top piece, the gasket is sleeved outside the bulge, and the bolt penetrates through the gasket.

It should be noted that the gasket can work normally without the gasket, but because the intermediate member and the top member have mutual rotational friction during use and are easy to break down for a long time, the gasket is added between the intermediate member and the top member, which is helpful for reducing friction.

Further, the upper end of the bolt is provided with a top cylinder, the diameter of the top cylinder is smaller than the diameter of the main body of the bolt and smaller than the inner diameter of the gasket, but the inner diameter of the gasket is smaller than the diameter of the main body of the bolt.

It should be noted that, this design may allow the gasket to be sleeved on the top post, but may be limited by the latch body.

Further, the fixing piece is a nut, the upper end of the bolt is provided with threads, and the bolt is connected with the nut through threads.

It should be noted that, besides the threaded connection, the fastening device may also be a common fastening manner such as a mortise and tenon structure.

Further, the lower part of the middle piece is provided with threads, and the middle piece is connected with the piece to be fixed through threads.

It should be noted that, the up-and-down movement of the bolt is relative to the intermediate member, and the intermediate member is required to be fixed to achieve the effect, specifically, the intermediate member and the member to be fixed are relatively and fixedly connected, a matched threaded hole can be drilled on the member to be fixed, and then the thread at the lower part of the intermediate member is rotationally connected with the threaded hole, so that the whole of the utility model can be always inserted on the member to be fixed, and the loss can be prevented.

The beneficial effects are that: the bolt in the utility model does not need to be integrally pulled out and placed elsewhere when not in use, but only needs to be pulled one time and rotated one time, and the operation is simple and convenient and the bolt is not easy to lose.

Drawings

Fig. 1 is an exploded view of a positioning device.

Fig. 2 is a schematic view of a positioning device mounted on a piece to be fixed.

Bolt 1, spring 2, intermediate piece 3, top piece 4, mounting piece 5, annular projection 11, recess 31, projection 41, gasket 6, top cylinder 12.

Detailed Description

Example 1: a positioning device, as shown in figure 1, comprises a bolt 1, a spring 2, a middle piece 3, a top piece 4 and a fixing piece 5; the upper end of the bolt 1 sequentially passes through the spring 2, the middle piece 3 and the top piece 4 and is fixedly connected with the fixing piece 5; the lower end of the bolt 1 is provided with an annular bulge 11, and the diameter of the annular bulge 11 is larger than that of the spring 2; the spring 2 is arranged inside the middle piece 3, and the upper end of the spring 2 is propped against the upper surface of the inside of the middle piece 3; the upper part of the intermediate member 3 has two symmetrically distributed grooves 31, the lower part of the top member 4 has two symmetrically distributed protrusions 41, and the size of the protrusions 41 is not larger than the size of the grooves 31.

It should be noted that, one end of the spring 2 abuts against the annular protrusion 11, the other end abuts against the upper surface of the interior of the middle piece 3, and the top piece 4 is integrated with the latch 1 to fix the middle piece 3, when the user lifts the top piece 4 upwards, the latch 1 is driven to lift upwards until the protrusion 41 slides out of the groove 31, at this time, the spring 2 is compressed, the user rotates the top piece 4 by a certain angle to enable the protrusion 41 to be misplaced with the groove 31, at this time, the user releases the top piece 4, and then the top piece 4 and the latch 1 move downwards under the action of the elasticity of the spring 2 until the protrusion 41 is clamped on the upper edge of the middle piece 3, so that the effect that the latch 1 is pulled upwards and automatically maintains a static state is achieved. Conversely, when the latch 1 needs to be inserted downward, the top member 4 is rotated until the protrusion 41 is aligned with the groove 31, and when the top member 4 is released, the latch 1 and the top member 4 move downward under the action of the elastic force of the spring 2 until the protrusion 41 is clamped at the bottom of the groove 31.

Example 2: on the basis of embodiment 1, the lower end of the top part 4 is provided with a gasket 6, the gasket 6 is sleeved outside the bulge 41, and the bolt 1 passes through the gasket 6.

It should be noted that the gasket 6 can work normally without the gasket, but the gasket 6 is added between the intermediate member 3 and the top member 4 to help reduce friction because the intermediate member and the top member have mutual rotational friction during use, which is easy to cause a failure for a long time.

Example 3: on the basis of embodiment 2, the upper end of the plug 1 is provided with a top column 12, the diameter of the top column 12 is smaller than the main body diameter of the plug 1 and smaller than the inner diameter of the gasket 6, but the inner diameter of the gasket 6 is smaller than the main body diameter of the plug 1.

It should be noted that this design may allow the gasket 6 to fit over the top post 12, but be limited by the body of the latch 1.

Example 4: on the basis of the embodiment 1, the fixing piece 5 is a nut, the upper end of the bolt 1 is provided with threads, and the bolt 1 is connected with the nut through threads.

Example 5: on the basis of embodiment 1, the lower part of the intermediate piece 3 is threaded, and the intermediate piece 3 is connected with the piece 5 to be fixed through threads, as shown in fig. 2.

It should be noted that, the up-and-down movement of the plug pin 1 is relative to the intermediate member 3, and to achieve this effect, the intermediate member 3 needs to be fixed, specifically, the intermediate member 3 and the member to be fixed 5 are fixedly connected relatively, a matched threaded hole can be drilled on the member to be fixed 5, and then the threads at the lower part of the intermediate member 3 are rotatably connected with the threaded hole, so that the whole of the present utility model can be always inserted on the member to be fixed 5, and loss can be prevented.

The above disclosure is intended to be illustrative of the preferred embodiments of the present utility model and is not to be construed as limiting the scope of the utility model, as any person skilled in the art would make variations or modifications which would fall within the spirit and scope of the utility model.

Claims

1. The positioning device is characterized by comprising a bolt, a spring, a middle piece, a top piece and a fixing piece; the upper end of the bolt sequentially passes through the spring, the middle piece and the top piece and is fixedly connected with the fixing piece; the lower end of the bolt is provided with an annular bulge, and the diameter of the annular bulge is larger than that of the spring; the spring is arranged inside the middle piece, and the upper end of the spring is propped against the upper surface of the inside of the middle piece; the upper part of the middle piece is provided with two symmetrically distributed grooves, the lower part of the top piece is provided with two symmetrically distributed protrusions, and the size of each protrusion is not larger than that of each groove.

2. The positioning device of claim 1 wherein said top member has a spacer at a lower end thereof, said spacer being positioned about said boss, said pin passing through said spacer.

3. The positioning device of claim 2 wherein said pin has a top cylinder at its upper end, said top cylinder having a diameter smaller than the diameter of the body of said pin and smaller than the inner diameter of said spacer, but the inner diameter of said spacer is smaller than the diameter of the body of said pin.

4. The positioning device of claim 1 wherein said securing member is a nut, said pin is threaded at an upper end thereof, and said pin is threadably coupled to said nut.

5. The positioning device as set forth in claim 1 wherein said intermediate member is threaded at a lower portion thereof, said intermediate member being threadably connected to the member to be secured.