CN213332161U

CN213332161U - Shock absorber

Info

Publication number: CN213332161U
Application number: CN202022112948.XU
Authority: CN
Inventors: 成艳明
Original assignee: Shanghai Mengdasheng Maternal And Child Products Co ltd
Current assignee: Shanghai Mengdasheng Maternal And Child Products Co ltd
Priority date: 2020-09-24
Filing date: 2020-09-24
Publication date: 2021-06-01
Anticipated expiration: 2030-09-24

Abstract

A shock absorber comprises a lower sleeve, an upper sleeve, a rod piece and a spring, wherein the upper sleeve is sleeved outside the lower sleeve; an upward groove is formed at the bottom of the upper sleeve, a downward groove is formed at the top of the lower sleeve, the groove of the lower sleeve is communicated with the groove of the upper sleeve to form a closed structure, and the spring and the rod piece are positioned in the closed structure; the upper sleeve is connected with the lower sleeve, and a through hole corresponding to the rod piece is formed in the lower sleeve; the upper sleeve is provided with an upper connecting seat, the bottom of the lower sleeve is provided with a lower connecting seat, the rod piece penetrates through the lower sleeve to be connected with the lower connecting seat, and the spring is sleeved on the rod piece; compared with the prior art, through pulling connecting seat down for member and connecting seat synchronous motion down, thereby compress the spring, synthesize the elasticity of spring self, play absorbing effect, the spring is located the enclosed construction all the time simultaneously, has better security and stability, moves away to avoid possible earthquakes through the pulling formula, makes wholly have better security.

Description

Shock absorber

Technical Field

The utility model belongs to the technical field of the swing car, especially, shock absorber.

Background

The baby carrier is a large class of children toys, and comprises five classes of children bicycles, children carts, baby walker, children tricycles and children electric vehicles. The suitable age range of children for children is 4-8 years, and the proper size is selected when choosing according to the age and stature height of children, namely the bicycle with the saddle height in the range of 435-635 mm, and the size of the brake handle of the hand brake is paid attention to when choosing the bicycle.

Be equipped with the shock absorber in children's bicycle, children's balance car, current shock absorber generally produces the effect of moving away to avoid possible earthquakes through compression spring, because current shock absorber spring all exposes outside basically, causes children to crowd to press from both sides danger easily, has certain potential safety hazard, and current shock absorber is the compression structure usually, and can cause reducing of shock absorber in compression process, exists and cause extruded danger to children.

SUMMERY OF THE UTILITY MODEL

The utility model provides a safe, reliable and totally enclosed shock absorber for overcoming the defects in the prior art.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a shock absorber comprises a lower sleeve, an upper sleeve, a rod piece and a spring, wherein the upper sleeve is sleeved outside the lower sleeve; an upward groove is formed at the bottom of the upper sleeve, a downward groove is formed at the top of the lower sleeve, the groove of the lower sleeve is communicated with the groove of the upper sleeve to form a closed structure, and the spring and the rod piece are positioned in the closed structure; the upper sleeve is connected with the lower sleeve, and a through hole corresponding to the rod piece is formed in the lower sleeve; the upper sleeve is provided with an upper connecting seat, the bottom of the lower sleeve is provided with a lower connecting seat, the rod piece penetrates through the lower sleeve to be connected with the lower connecting seat, and the spring is sleeved on the rod piece.

As a preferred scheme of the utility model, lower sleeve and upper sleeve are located same straight line, and lower sleeve and upper sleeve set up with one heart.

As an optimized scheme of the utility model, the member includes the body of rod and is located the lamellar body at body of rod top, goes up telescopic recess cross sectional dimension and is unanimous with the size of lamellar body.

As an optimized scheme of the utility model, the spring top offsets with the lamellar body, and the spring bottom offsets with telescopic recess bottom down.

As a preferred scheme of the utility model, it is the blind hole structure to go up telescopic recess, and telescopic recess is the through-hole structure down, and is formed with the connecting hole that is linked together with lower sleeve recess on the connecting seat down.

As a preferred scheme of the utility model, be formed with the inner thread structure on the connecting hole, body of rod bottom is formed with the external screw thread with inner thread structure looks adaptation, member and lower connecting seat threaded connection.

As a preferred scheme of the utility model, be formed with the external screw thread structure on the lower sleeve, be formed with the corresponding internal thread structure of external screw thread structure on the upper sleeve, threaded connection between upper sleeve and the lower sleeve.

As an optimized scheme of the utility model, lower sleeve, last sleeve, member, spring, go up connecting seat and lower connecting seat are located same straight line.

As an optimized scheme of the utility model, go up sleeve and last connecting seat fixed connection, the lower sleeve is disconnected with lower connecting seat.

As an optimized proposal of the utility model, an upper connecting shaft is arranged on the upper connecting seat, and a lower connecting shaft is arranged on the lower connecting seat.

The beneficial effects of the utility model are that, compare with prior art: connecting seat under through the pulling for member and connecting seat synchronous movement down, thereby compress the spring, synthesize the elasticity of spring self, play absorbing effect, the spring is located the enclosed construction all the time simultaneously, has better security and stability, moves away to avoid possible earthquakes through the pulling type, makes whole have better security.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is an exploded view of the present invention;

fig. 3 is a front view of the present invention;

FIG. 4 is a cross-sectional view taken along plane A-A of FIG. 3;

reference numbers in the figures: the device comprises an upper sleeve 1, an upper connecting seat 1-1, an upper connecting shaft 1-2, a lower sleeve 2, a lower connecting seat 2-1, a lower connecting shaft 2-2, a rod piece 3, a sheet body 3-1, a rod body 3-2 and a spring 4.

Detailed Description

The following describes embodiments of the present invention in detail with reference to the accompanying drawings.

As shown in fig. 1-4, a shock absorber comprises a lower sleeve 2, an upper sleeve 1, a rod 3 and a spring 4, wherein the upper sleeve 1 is sleeved outside the lower sleeve 2; an upward groove is formed at the bottom of the upper sleeve 1, a downward groove is formed at the top of the lower sleeve 2, the groove of the lower sleeve 2 is communicated with the groove of the upper sleeve 1, the groove of the lower sleeve 2 and the groove of the upper sleeve 1 form a closed structure, and the spring 4 and the rod piece 3 are positioned in the closed structure; the upper sleeve 1 is connected with the lower sleeve 2, and a through hole corresponding to the rod piece 3 is formed on the lower sleeve 2; the upper sleeve 1 is provided with an upper connecting seat 1-1, the bottom of the lower sleeve 2 is provided with a lower connecting seat 2-1, the rod piece 3 penetrates through the lower sleeve 1 to be connected with the lower connecting seat 2-1, and the spring 4 is sleeved on the rod piece 3.

Lower sleeve 2 and upper sleeve 1 are located same straight line, and lower sleeve 2 and upper sleeve 1 set up with one heart, and the recess opening direction of lower sleeve 2 is opposite with the recess opening direction of upper sleeve 1, and member 3 and spring 4 are located lower sleeve 2 and upper sleeve 1 middle part, and when initial condition, member 3 offsets with the recess top of upper sleeve 1, and spring 4 offsets with the recess bottom of lower sleeve 2.

The rod piece 3 comprises a rod body 3-2 and a sheet body 3-1 positioned at the top of the rod body 3-2, the length of the closed structure is larger than that of the rod body 3-2, the size of the section of the groove of the upper sleeve 1 is consistent with that of the sheet body 3-1, the sheet body 3-1 is fixedly connected with the rod body 3-2 through welding or integrated forming, and the edge of the sheet body 3-1 abuts against the inner wall of the upper sleeve 1.

The spring 4 is sleeved on the rod body 3-2, the top of the spring 4 abuts against the sheet body 3-1, the bottom of the spring 4 abuts against the bottom of the groove of the lower sleeve 2, in the telescopic process of the spring 4, the rod body 3-2 moves synchronously along with the telescopic of the spring 4, and the rod body 3-2 slides relative to the upper sleeve 1 and the lower sleeve 2.

The groove of the upper sleeve 1 is of a blind hole structure, the groove of the lower sleeve 2 is of a through hole structure, a connecting hole communicated with the groove of the lower sleeve 2 is formed in the lower connecting seat 2-1, the connecting hole is of a blind hole structure, the size of the connecting hole is consistent with that of the rod body 3-2, and the connecting hole and the rod body 3-2 are located on the same straight line.

An internal thread structure is formed on the connecting hole, an external thread matched with the internal thread structure is formed at the bottom of the rod body 3-2, the rod piece 3 is in threaded connection with the lower connecting seat 2-1, the rod piece 3 and the lower connecting seat 2-1 are fixedly connected under the action of the thread, and the movement of the lower connecting seat 2-1 synchronously drives the rod piece 3 to move.

When the lower connecting seat 2-1 is pulled outwards under the action of external force, the lower connecting seat 2-1 drives the rod piece 3 to move, so that the spring 4 is compressed, and the spring 4 has resilience force and plays a role in shock absorption.

An external thread structure is formed on the lower sleeve 2, an internal thread structure corresponding to the external thread structure is formed on the upper sleeve 1, the upper sleeve 1 and the lower sleeve 2 are fixedly connected through threads, and the lower connecting seat 2-1 slides relative to the upper sleeve 1 and the lower sleeve 2 under the action of external force. The lower sleeve 2, the upper sleeve 1, the rod piece 3, the spring 4, the upper connecting seat 1-1 and the lower connecting seat 2-1 are all arranged along the length direction of the spring 4, so that the spring 4 can stretch conveniently.

The upper sleeve 1 is fixedly connected with an upper connecting seat 1-1, the lower sleeve 2 is not connected with a lower connecting seat 2-1, the top of the lower connecting seat 2-1 is abutted against the bottom of the lower sleeve 2 in an initial state, an upper connecting shaft 1-2 is arranged on the upper connecting seat 1-1, a lower connecting shaft 2-2 is arranged on the lower connecting seat 2-1, the lower connecting shaft 2-2 is not interfered with the connecting holes, and the lower connecting shaft 2-2 and the upper connecting shaft 1-2 are used for connecting a vehicle body or a wheel carrier.

In actual use, the upper sleeve 1 is fixedly connected to the frame, the lower sleeve 2 is fixedly connected to the upper sleeve 1, the upper sleeve 1 and the lower sleeve 2 are in a relatively static state under the frame, when the lower connecting seat 2-1 is vibrated by external force, the top of the lower connecting seat 2-1 is abutted to the bottom of the lower sleeve 2 in an initial state, and only when the lower connecting seat 2-1 is subjected to downward tension, the lower connecting seat 2-1 moves downward to drive the rod body 3 to move downward, so that the spring 4 is compressed, and the elasticity of the spring 4 is integrated to play a role in shock absorption.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention; thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Although the reference numerals in the figures are used more here: terms such as an upper sleeve 1, an upper connecting seat 1-1, an upper connecting shaft 1-2, a lower sleeve 2, a lower connecting seat 2-1, a lower connecting shaft 2-2, a rod piece 3, a sheet body 3-1, a rod body 3-2, a spring 4 and the like are used, but the possibility of using other terms is not excluded; these terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. A shock absorber is characterized by comprising a lower sleeve (2), an upper sleeve (1), a rod piece (3) and a spring (4), wherein the upper sleeve (1) is sleeved outside the lower sleeve (2); an upward groove is formed at the bottom of the upper sleeve (1), a downward groove is formed at the top of the lower sleeve (2), the groove of the lower sleeve (2) is communicated with the groove of the upper sleeve (1) to form a closed structure, and the spring (4) and the rod piece (3) are positioned in the closed structure; the upper sleeve (1) is connected with the lower sleeve (2), and a through hole corresponding to the rod piece (3) is formed in the lower sleeve (2); the upper sleeve (1) is provided with an upper connecting seat (1-1), the bottom of the lower sleeve (2) is provided with a lower connecting seat (2-1), the rod piece (3) penetrates through the lower sleeve (2) to be connected with the lower connecting seat (2-1), and the spring (4) is sleeved on the rod piece (3).

2. A shock absorber according to claim 1, wherein the lower sleeve (2) and the upper sleeve (1) are located on the same line, and the lower sleeve (2) and the upper sleeve (1) are concentrically arranged.

3. A shock absorber according to claim 1, wherein the rod (3) comprises a rod body (3-2) and a plate body (3-1) at the top of the rod body (3-2), and the cross-sectional dimension of the groove of the upper sleeve (1) corresponds to the dimension of the plate body (3-1).

4. A shock absorber according to claim 1, wherein the top of the spring (4) abuts against the plate (3-1) and the bottom of the spring (4) abuts against the bottom of the recess of the lower sleeve (2).

5. A shock absorber according to claim 1, wherein the recess of the upper sleeve (1) is a blind hole structure, the recess of the lower sleeve (2) is a through hole structure, and the lower connecting seat (2-1) is formed with a connecting hole communicating with the recess of the lower sleeve (2).

6. A shock absorber according to claim 5, wherein the connecting hole is formed with an internal thread structure, the bottom of the rod body (3-2) is formed with an external thread adapted to the internal thread structure, and the rod body (3) is in threaded connection with the lower connecting seat (2-1).

7. A shock absorber according to claim 1, wherein the lower sleeve (2) is formed with an external thread structure, the upper sleeve (1) is formed with an internal thread structure corresponding to the external thread structure, and the upper sleeve (1) is threadedly connected to the lower sleeve (2).

8. A shock absorber according to claim 1, wherein the lower sleeve (2), the upper sleeve (1), the rod member (3), the spring (4), the upper connecting seat (1-1) and the lower connecting seat (2-1) are located on the same straight line.

9. A shock absorber according to claim 1, wherein the upper sleeve (1) is fixedly connected to the upper connecting seat (1-1), and the lower sleeve (2) is not connected to the lower connecting seat (2-1).

10. A shock absorber according to claim 9, wherein the upper connecting seat (1-1) is provided with an upper connecting shaft (1-2), and the lower connecting seat (2-1) is provided with a lower connecting shaft (2-2).