CN220109433U

CN220109433U - Rubber connecting piece and waist supporting structure

Info

Publication number: CN220109433U
Application number: CN202321028112.9U
Authority: CN
Inventors: 刘洋; 程军; 刘拥华
Original assignee: UE Furniture Co Ltd
Current assignee: UE Furniture Co Ltd
Priority date: 2023-05-04
Filing date: 2023-05-04
Publication date: 2023-12-01
Anticipated expiration: 2033-05-04

Abstract

The utility model discloses a rubber connecting piece and a lumbar support structure, which comprises the following components: the connecting piece body is cylindrical or cake-shaped, connecting ends are respectively formed at two ends of the connecting piece body, at least two end cavities are formed in the connecting piece body, the axial length of each cavity is smaller than that of the connecting piece body, and a solid part is formed between every two sections of cavities to separate the cavities. Through being equipped with two section at least cavitys, leave the required space of deformation, the cavity is supported to the solid portion that remains simultaneously for the connecting piece can not excessively warp and keep good holding power, prevented simultaneously that excessive deformation from bringing the injury to the connecting piece itself, prolonged life, brought good experience for the seat user.

Description

Rubber connecting piece and waist supporting structure

Technical Field

The utility model relates to the field of rubber structures, in particular to a rubber connecting piece and a lumbar support structure.

Background

The rubber has strong plasticity, flexibility and mobility, is safer than a hard material, is widely applied to various occasions, and when the rubber is used as a connecting piece on a seat, the rubber can provide stress buffering and multidirectional turning functions, the existing rubber connecting piece is mostly solid columnar or cake-shaped, the rubber connecting piece has mobility and turning capability, but the deformation force is larger, the reset elastic force is stronger, the stress is difficult to adjust, and if the whole inside of the rubber connecting piece is hollowed, the deformation force is reduced, but the supporting force of the connecting piece is correspondingly reduced, the expected effect cannot be achieved, and the connecting piece is irreversibly damaged due to excessive deformation after long-term maintenance.

Therefore, a rubber connecting piece structure is needed, which is easy to deform and can provide enough supporting force, the strength of the connecting piece is considered, the service life is ensured, and good experience is brought to a seat user.

Disclosure of Invention

In order to solve the technical problems described above, an object of the present utility model is to provide a rubber connector, which can provide sufficient supporting force while ensuring flexibility of the connector by providing a hollow cavity inside the rubber connector while maintaining a part of physical partitions.

And further provides a waist supporting structure provided with the rubber connecting piece, and when the waist is twisted by the stress, the rubber connecting piece is deformed to generate reset elastic force.

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

a rubber connector comprising:

the connecting piece body is cylindrical or cake-shaped, connecting ends are respectively formed at two ends of the connecting piece body, at least two end cavities are formed in the connecting piece body, the axial length of each cavity is smaller than that of the connecting piece body, and a solid part is formed between every two sections of cavities to separate the cavities. The cavity reserves deformation space for the deformation of the connecting piece, so that the flexibility of the connecting piece is enhanced, the solid part ensures that the connecting piece still has enough supporting force, and meanwhile, the damage to the connecting piece caused by excessive deformation is prevented.

Preferably, the connector body is cake-shaped, and each connecting end face extends to a section of cavity in the middle of the connector body in the opposite direction, and the solid part is located in the middle of the connector body. The axial length of the pie-shaped piece is short, and the two-section cavity can provide enough flexibility.

Preferably, an annular deformation groove is provided at the waist of the cake-shaped connector body, and the annular deformation groove corresponds to the physical position. The annular deformation groove of waist has reserved deformation space, has increased the mobility of connecting piece.

Preferably, the connecting piece body is cylindrical, and at least three sections of cavities are distributed in the connecting piece body along the axial direction, wherein the cavity near the connecting end is communicated with the connecting end. The axial length of the cylindrical part is longer, and only two sections of cavities cannot give consideration to flexibility and supporting force, so that the effect can be better achieved by the multi-section cavities.

Preferably, an annular deformation groove is formed in the cylindrical connector body at a position corresponding to the entity. The deformation grooves of the multiple sections enable the longer connecting piece to have better flexibility.

Preferably, the sum of the axial lengths of the cavities is two-thirds to three-quarters of the axial length of the connector body. The space and the solid part have reasonable ratio, so that the flexibility and the supporting force can be considered.

Preferably, the annular deformation groove width is wider than the solid portion axial length. The supporting performance of the solid part is not excessively influenced while enough deformation space is sketched.

A lumbar support structure comprises a chair back, a lumbar support and a rubber connecting piece, wherein two connecting ends of the rubber connecting piece are respectively connected with the chair back and the lumbar support, and the rubber connecting piece deforms when the lumbar support is twisted under the stress. The waist rest can change the direction along with the body action of a user, is suitable for the body posture of the user, and if the connecting piece is solid, the force required by deformation is large, and the use experience of a light person is poor; at the same time, the waist is supported by enough supporting force, and the waist is not easy to collapse or excessively deform like a connecting piece with a hollow inside.

The principle and beneficial effects of the utility model adopting the technical scheme are as follows:

the core of the utility model is to provide a rubber connecting piece, wherein a plurality of sections of cavities are additionally arranged in the rubber connecting piece, and solid parts are reserved between the cavities, so that the connecting piece has flexibility and supporting force.

Specifically speaking, through being equipped with two section at least cavitys, leave the required space of deformation, the solid portion that remains simultaneously supports the cavity for the connecting piece can not excessively warp and keep good holding power, prevented simultaneously that excessive deformation from bringing the injury to connecting piece itself, prolonged life.

Drawings

Fig. 1 is a perspective view of a lid in embodiment 1;

fig. 2 is a perspective view of the setting seat in embodiment 1;

FIG. 3 is a block diagram of the connector and the closure;

FIG. 4 is a semi-assembled view of a rubber connector;

FIG. 5 is a full assembly view of a rubber connector;

FIG. 6 is a perspective view of an example of the use of a rubber link on a seat and lumbar support;

FIG. 7 is a cross-sectional view of the pie-shaped rubber joint of example 1;

FIG. 8 is a cross-sectional view of a cylindrical rubber connector in example 2;

the reference numerals are as follows: the novel plastic seat comprises a seat body, a seat, a cover, a 3-avoiding groove, a 4-rubber connecting piece, a 5-connecting protrusion, a 6-limiting baffle, a 7-clamping groove, an 8-notch, a 9-neck part, a 10-convex ring, a 11-cover body, a 12-rib plate, a 13-hollow part, a 14-through hole, a 15-deformation groove, a 16-seat back, a 17-waist support, a 18-flange, a 19-connecting arm, a 20-supporting arm, a 21-connecting piece main body, a 22-connecting end, a 23-cavity and a 24-solid part.

Detailed Description

In order that the above-recited objects, features and advantages of the present utility model will be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, without conflict, the embodiments of the present utility model and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced in other ways than those described herein, and therefore the scope of the present utility model is not limited to the specific embodiments disclosed below.

The specific embodiments of the present utility model are as follows:

the present utility model is first defined in terms of the direction in which the lumbar support structure is used as a reference in normal use, with the lumbar support in front and the back in rear.

Example 1: as shown in fig. 1 to 8, the present utility model firstly provides a rubber connector 4, which comprises a connector main body 21, wherein the connector main body 21 is cylindrical or cake-shaped, two ends of the connector main body 21 are respectively formed with a connecting end 22, the connector main body 21 is connected with other components through the connecting ends 22, at least two sections of cavities 23 are arranged in the connector main body 21, the axial length of all the cavities 23 is smaller than the axial length of the connector main body 21, a solid part 24 is formed between every two sections of cavities 23 to separate the cavities 23, when the rubber connector 4 is stressed, the cavities 23 provide deformation space for the connector main body 21, and the solid part 24 provides supporting force, and simultaneously prevents the rubber connector 4 from excessively deforming.

The general composition of the rubber connector is described above, and the following details are given:

as shown in fig. 7, the connector body 21 is in a shape of a circular cake, the axial length is short, a section of cavity 23 extends from the end face of each connecting end 22 toward the middle of the connector body 21 in the opposite direction, the axial lengths of the two sections of cavities 23 are equal, the solid part 24 is located in the middle of the connector body 21, an annular deformation groove 15 is formed in the waist of the cake-shaped connector body 21, and the groove depth is about one fifth of the diameter of the circular surface of the rubber connector 4.

Further, as shown in FIG. 7, the sum of the axial lengths of the cavities 23 is two-thirds to three-quarters of the axial length of the connector body 21, and the annular deformation groove 15 is slightly wider than the axial length of the solid portion 24 by 3-5mm.

Further, as shown in fig. 6, as a specific application of the rubber connecting piece 4, the present embodiment further provides a lumbar support structure, which includes a chair back 16, a lumbar support 17 and the rubber connecting piece 4, wherein two connecting ends 22 of the connecting piece main body 21 are respectively connected with the chair back 16 and the lumbar support 17 through the placement seat 1 and the closing cover 2, and the connecting piece main body 21 deforms when the lumbar support 17 is twisted under the force.

The connecting end 22 is radially inwardly contracted by the connecting body 21 to form the constricted portion 9, thereby forming a convex ring 10 protruding radially outwardly from the constricted portion 9 at the end portion.

Specifically, as shown in fig. 1-5, a connecting arm 19 is arranged on the back of the waist support 17, one seat 1 is arranged on the end of the connecting arm 19, a supporting arm 20 is arranged on the chair back 16, the other seat 1 is arranged on the end of the supporting arm 20, the seat 1 is generally cylindrical and is retracted inwards towards two sides of the end face of the rubber connecting piece 4 to form an avoidance groove 3, a connecting bulge 5 is formed between the two avoidance grooves 3, a threaded hole is arranged in the connecting bulge 5, the connecting bulge is used for the following installation step, the part, close to the end face of the seat 1, of the avoidance groove 3 extends along the radial direction to form a limit baffle 6, about half of the round surface of the seat 1 is formed, and a clamping groove 7 is formed between the limit baffle 6 and the bottom of the opposite avoidance groove 3; the gap 8 for avoiding the connecting protrusion 5 is formed in the head of the rubber connecting piece 4 matched with the placement seat 1, the convex ring 10 is clamped into the clamping groove 7 and stopped by the limit baffle 6 when the rubber connecting piece 4 is matched with the placement seat 1 in an inserting manner, the limit baffle 6 is clamped at the necking part 9, the gap 8 is matched with the connecting protrusion 5, the cover 2 covers the connecting protrusion 5, and therefore the convex ring 10 can be limited in the clamping groove, and the displacement of the rubber connecting piece 4 is limited.

Specifically, as shown in fig. 1 or 3, the cover 2 includes a cover body 11, two rib plates 12 extend from one side of the cover body 11 towards the direction perpendicular to the cover body 11, an empty space 13 for avoiding the connection protrusion 5 is reserved between the two rib plates 12, the combination of the two rib plates 12 and the empty space 13 is approximately circular, a screw hole is formed in the connection protrusion 5, a through hole 14 corresponding to the screw hole is formed in the cover body 11, during actual installation, the rib plates 12 are inserted between the convex ring 10 and the bottom of the avoidance groove 3 to fill gaps, the cover 2 penetrates into the screw hole of the connection protrusion 5 through screws to achieve connection and fixation, and the structure is simple and easy to install.

Further, as shown in fig. 4-5, the limit baffle 6 entirely occupies half of the height of the avoidance groove 3, so that a gap is left between the limit baffle 6 and the notch of the avoidance groove 3, the other side of the cover closing body 11 extends in the same direction towards the rib plate 12 to form a flange 18, when the cover closing body 2 is combined with the placement seat 1, the flange 18 fills the gap and jointly limits the convex ring 10 of the rubber connecting piece 4 with the limit baffle 6, the cover closing body 2 is matched with the placement seat 1 in shape, and the combined cover closing body 2 and the outer surface of the placement seat 1 are cylindrical and attractive and unobtrusive.

As shown in fig. 2-7, the back of the waist support 17 is provided with a connecting arm, one seat 1 is arranged on the end of the connecting arm, the chair back 16 is provided with a supporting arm, the other seat 1 is arranged on the end of the supporting arm, two ends of the connecting piece main body 21 are respectively clamped into the seat 1 of the connecting arm and the supporting arm, the cover 2 is inserted, the connecting piece main body 21 is bidirectionally limited, the chair back 16 is elastically connected with the waist support 17 through locking screws, when a user leans against the chair back 16, the waist support 17 is twisted along with the change of sitting posture of the user, the connecting piece main body 21 is deformed to generate reset elastic force, and after the user leaves, the reset elastic force drives the waist support 17 and the connecting piece main body 21 to restore to an initial state.

Example 2: the difference between this embodiment and embodiment 1 is that, as shown in fig. 8, when the required connection distance is longer, the connector body 21 is cylindrical, and compared with the cake-shaped connector body, three sections of cavities 23 are distributed in the axial direction in the connector body 21, the axial length of the cavity 23 near the waist is longer, the axial length of the cavity 23 gradually shortens from the waist to the connection end 22, and the longer cavity 23 makes the deformation of the middle part easier when the connector body 21 is longer, wherein the cavity 23 near the connection end 22 is communicated with the connection end 22, and the annular deformation groove 15 is provided at the position of the cylindrical connector body 21 corresponding to the solid portion 24, the groove depth is about one fifth of the diameter of the circular surface of the connector body 4, and the connection mode is the same as that of the first embodiment.

The utility model and its embodiments have been described above by way of illustration and not limitation, and the utility model is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present utility model.

Claims

1. A rubber connector, characterized by comprising: the connecting piece body is cylindrical or cake-shaped, connecting ends are respectively formed at two ends of the connecting piece body, at least two sections of cavities are formed in the connecting piece body, the axial length of each cavity is smaller than that of the connecting piece body, and a solid part is formed between every two sections of cavities to separate the cavities.

2. A rubber connector as in claim 1, wherein: the rubber connecting piece main body is cake-shaped, each connecting end face extends to the middle part of the connecting piece main body towards the opposite direction, and the entity part is positioned in the middle of the connecting piece main body.

3. A rubber connector as in claim 2, wherein: an annular deformation groove is arranged at the waist of the cake-shaped connecting piece main body.

4. A rubber connector as in claim 1, wherein: the rubber connecting piece main body is cylindrical, at least three sections of cavities are distributed in the connecting piece main body along the axial direction, and the cavities close to the connecting end are communicated with the connecting end.

5. The rubber connector of claim 4, wherein: an annular deformation groove is arranged at the position corresponding to the entity position of the cylindrical connecting piece main body.

6. A rubber connector as in claim 1, wherein: the sum of the axial lengths of the cavities is two-thirds to three-quarters of the axial length of the connector body.

7. A rubber connector according to claim 3 or 5, characterized in that: the annular deformation groove width is wider than the axial length of the solid part.

8. A lumbar support structure comprising a chair back, a lumbar support and a rubber connector as claimed in claim 1, wherein the two connecting ends of the connector body are respectively connected with the chair back and the lumbar support, and the connector body deforms when the lumbar support is twisted under a force.