CN217243378U - Waist leans on rotation mounting structure - Google Patents

Abstract

The utility model discloses a waist rest rotating installation structure, which comprises a waist rest body and a bracket for supporting the waist rest body; the waist rest body is rotatably connected to the bracket, and the waist rest body is detachably connected with the bracket; rotating shafts are arranged on two sides of the waist rest body in a mirror image mode, and rotating shaft seats are arranged on two sides of the bracket in a corresponding mirror image mode; the rotating shaft seat is provided with a rotating groove which can be in rotating fit with the rotating shaft, and the rotating groove is provided with a bayonet facing the front; the bayonet is configured to be in interference fit with the rotating shaft, and a contraction opening penetrating through the rotating shaft is formed in the rotating shaft; the rotating shaft enters the rotating groove through the bayonet, and the bayonet extrudes and acts on the rotating shaft to enable the rotating shaft to correspondingly face the inner side of the contraction opening and contract and deform along the radial direction; after the rotating shaft passes through the bayonet, the rotating shaft is deformed and reset to limit the rotating shaft to be separated from the rotating groove. The waist rest body and the bracket are convenient to mount and dismount; the waist rest body and the bracket can be packed and transported separately, so that the transportation cost is saved; the user can assemble the device conveniently during assembly.

Description

Waist leans on rotation mounting structure

Technical Field

The utility model relates to a thing to sit on field, in particular to waist leans on rotation mounting structure.

Background

Sub-health is always a living problem concerned by people, wherein lumbar vertebra problems brought by people due to long-time sitting are particularly frequent, while a chair is used as daily furniture for people to work and study, under the condition of long-time sitting and working, the spine of a human body is naturally bent, particularly the bending at the lumbar vertebra is more important, the lumbar vertebra is easily bent outwards when the chair is in a sitting posture for a long time, and isosceles vertebra diseases of lumbar disc herniation are easily caused after long-time sitting. As is well known, the spine of a human body is S-shaped, and therefore, a waist rest is additionally arranged at the backrest of part of office chairs to play a role of supporting the waist, so that the natural bending part of the lumbar vertebra is supported, the outward bending of the lumbar vertebra due to fatigue is prevented, and the lumbar vertebra health of office staff is guaranteed.

In practical application, in order to improve the comfort of the lumbar support, the lumbar support is required to be adjusted in the front-back direction in addition to the lifting adjustment of the lumbar support, so that the requirements of different people on the lumbar support are met. The existing seats realize the front-back rotation adjustment of the waist support by rotationally connecting the waist support with the back support; but the waist leans on to rotate mounting structure all is comparatively complicated loaded down with trivial details among the current seat, often need dispatch from the factory before the firm installs the back packing transportation again, this has just led to the increase of seat packing volume, and production and cost of transportation are all higher. In view of this point, it is urgently needed to design a waist rest rotation installation structure with simple structure and convenient assembly and disassembly.

The chinese utility model of CN202022221238.0 discloses a "waist rest adjusting device and a seat", which comprises a waist rest and a support frame for supporting the waist rest, wherein the waist rest is rotatably connected to the support frame; an elastic element is arranged between the waist rest and the supporting frame, and the elastic element enables the waist rest to have a tendency of always keeping at an initial position; the support frame is provided with a rotation limiting mechanism, and the rotation limiting mechanism comprises a cam assembly and a control handle for controlling the cam assembly to rotate; the waist rest rotates backwards from the initial position to be in butt fit with the cam component; the cam component is driven to rotate by rotating the control handle so as to adjust the maximum rotation angle of the lumbar support; then, the chair of the utility model can adjust the looseness of the waist rest by the rotation of the cam component through the cam component arranged on the supporting frame, so as to be suitable for different people; simple structure, cost saving and convenient operation. Although the waist rest is rotationally connected to the support frame, the rotating structure is too complex and tedious, and a user cannot assemble the waist rest by himself; the assembly is required before leaving the factory, and the installation and transportation cost is high.

Disclosure of Invention

The utility model overcomes the defects in the prior art, and aims to provide a waist rest rotating installation structure which has simple structure, convenient operation and lower cost; the waist rest body is rotatably arranged in a rotating shaft seat on the bracket through a rotating shaft; the rotating groove on the rotating shaft seat is provided with a bayonet which is in interference fit with the rotating shaft; a contraction opening is arranged in the rotating shaft, so that the rotating shaft can contract and deform towards the inner side of the contraction opening and along the radial direction; when the installation is carried out, the rotating shaft passes through the bayonet and is extruded and deformed, so that the rotating shaft can pass through the bayonet; after the rotating shaft is in rotating fit with the rotating groove, the rotating shaft is deformed and reset to limit the rotating shaft to be separated from the rotating groove; the waist rest body is simple and reliable in connection with the bracket, the waist rest body can be quickly and rotatably installed on the bracket without being connected through screws, and the waist rest body is convenient to disassemble and assemble; the packaging and the transportation are convenient, so that the transportation cost is saved; the user can assemble the device conveniently during assembly.

The technical scheme of the utility model is realized like this:

a waist support rotary mounting structure comprises a waist support body and a bracket for supporting the waist support body; the waist rest body is rotatably connected to the bracket, and the waist rest body is detachably connected with the bracket; the two sides of the waist rest body are provided with rotating shafts in a mirror image mode, and two sides of the bracket are provided with rotating shaft seats corresponding to the mirror image mode; the rotating shaft seat is provided with a rotating groove which can be rotationally matched with the rotating shaft, and the rotating groove is provided with a bayonet facing forwards; the bayonet is configured to be in interference fit with the rotating shaft, and a contraction opening penetrating through the rotating shaft is arranged in the rotating shaft; the rotating shaft enters the rotating groove through the bayonet, and the bayonet extrudes and acts on the rotating shaft to enable the rotating shaft to correspondingly face the inner side of the contraction opening and contract and deform along the radial direction; after the rotating shaft passes through the bayonet, the rotating shaft is deformed and reset to limit the rotating shaft to be separated from the rotating groove.

Preferably, the waist leans on the body to be "mouth" style of calligraphy, and the waist leans on the body including the horizontal support section that is located upper and lower both ends respectively and the collateral branch support section that is located the left and right sides respectively, and the pivot setting is on the collateral branch support section and is stretched out towards the central direction level of waist leans on the body. All be equipped with the pivot on the collateral branch supporting segment of both sides for rotating-structure is more stable.

Preferably, the constriction opening is a transverse groove extending along the axial direction of the rotating shaft and penetrating through the rotating shaft from front to back. When the rotating shaft is extruded in the vertical direction, the upper end and the lower end of the rotating shaft can contract towards the inner side of the contraction opening.

Preferably, the constrictions are arranged at the middle position of the rotating shaft, and the spacing of the constrictions is between 2/5 and 3/5 of the diameter of the rotating shaft. The strength of the rotating shaft can be ensured, and meanwhile, the rotating shaft is kept to have a certain deformation.

Preferably, a limit block extending backwards is further arranged at the end part of the rotating shaft, and the rotating shaft seat is limited between the limit block and the side supporting section. Avoid the waist to lean on the body to rock in the left and right sides direction, experience not good.

Preferably, the bracket is made of metal or hard plastic. The hardness of the rotating shaft seat is high, deformation is not prone to occurring, therefore, the distance between the bayonets cannot change basically, and the bayonets can effectively extrude and act on the rotating shaft.

Preferably, the position of the rotating shaft is located at the lower part of the side supporting section. The rotating shaft is arranged at the lower part of the waist support body, so that the rotating range of the upper part of the waist support body is larger.

Preferably, the side support sections are arc-shaped bodies with the upper parts protruding forwards. So that the waist support body is mainly ejected or contracted by the upper protruding part in the rotating process of the waist support body, and the waist supporting effect can be obviously adjusted by rotating the waist support body.

Preferably, a vertical supporting elastic sheet is further arranged between the lumbar support body and the support, and the supporting elastic sheet is correspondingly elastically deformed in response to the rotation of the lumbar support body. The supporting elastic sheet can provide waist support force for the waist support body, and the waist support body can elastically rotate in the front-back direction when in use, so that the waist support body has a certain self-adaptive adjusting function, and a user can use the waist support body more comfortably.

Preferably, the upper end of the supporting elastic sheet is in clamping fit with the waist rest body, the upper end of the waist rest body is provided with a notch, and the upper end of the supporting elastic sheet is correspondingly provided with an elastic clamping tongue and a clamping block which are spaced up and down; the upper end of the supporting elastic sheet penetrates out of the notch upwards and the elastic clamping tongue is clamped outside the notch, and the elastic clamping tongue and the clamping block limit the upper end of the supporting elastic sheet and the waist rest body to be fixed relatively in the vertical direction.

Adopted above-mentioned technical scheme the utility model discloses a design departure point, theory and beneficial effect are:

firstly, the waist rest rotating installation structure of the utility model has the advantages that the connection between the waist rest body and the bracket does not need to use screws; the rotating shaft on the waist rest body is clamped in and rotationally matched with the rotating groove on the bracket in a clamping manner; the front end of the rotating groove is provided with a bayonet which is in interference fit with the rotating shaft; because the strength and the hardness of the bracket are higher, the bracket is not easy to deform, and the distance between the bayonets is basically not changed, a contraction opening is arranged in the rotating shaft, so that the rotating shaft can be contracted and deformed to a certain degree when being extruded; so that the rotating shaft can penetrate through the bayonet and is in running fit with the rotating groove. The structure is simple and reliable, the design is ingenious, and the installation and the disassembly between the waist rest body and the bracket are convenient; the waist rest body and the bracket can be packed and transported separately, so that the transportation cost is saved; the user can assemble the device conveniently during assembly.

Secondly, the volume and the occupied space of the rotating shaft seat are very small no matter the rotating shaft or the rotating shaft seat; then the connecting structure between the waist rest body and the bracket has smaller volume, does not occupy the space of the seat, and is simple and beautiful.

Moreover, a vertical supporting elastic sheet is arranged between the waist rest body and the support, and the supporting elastic sheet can provide supporting force for the waist rest body, so that the waist rest body can elastically rotate back and forth within a certain range in the use process, and has a self-adaptive adjustment function and a better experience effect; the waist rest body and the supporting elastic sheet are in clamping fit, and the waist rest body and the supporting elastic sheet do not need to be connected through screws, so that the installation is fast and convenient; the whole waist rest body can be easily arranged on the bracket.

Drawings

Fig. 1 is a schematic perspective view of a lumbar support body connected to a support in an embodiment of the present invention;

fig. 2 is a schematic perspective view of the connection between the lumbar support body and the bracket according to the embodiment of the present invention;

fig. 3 is a front view of the lumbar support body in an embodiment of the present invention;

fig. 4 is a schematic perspective view of the back surface of the lumbar support body in the embodiment of the present invention;

fig. 5 is a side view of a bracket according to an embodiment of the present invention;

fig. 6 is a schematic view of the three-dimensional structure of the connection between the supporting spring and the lumbar support body in the embodiment of the present invention.

The various reference numbers are: a lumbar support body 1; a transverse support section 1 a; a side support section 1 b; a bracket 2; a rotating shaft 3; a rotating shaft seat 4; a rotating groove 5; a bayonet 6; a constriction 7; a limiting block 8; a supporting spring plate 9; a notch 10; an elastic clamping tongue 11; and a latch 12.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

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

In the description of the present invention, the term "at least one" means one or more unless explicitly defined otherwise. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The present embodiment is described with reference to the reference orientation of each part, such as front and rear, in a state where the user normally uses the seat after sitting on the seat.

The specific implementation manner of the utility model is as follows:

as shown in fig. 1-6, the utility model provides a waist rest rotary mounting structure, which comprises a waist rest body 1 and a bracket 2 for supporting the waist rest body 1; the waist rest body 1 is rotatably connected to the bracket 2, and the waist rest body 1 is detachably connected with the bracket 2; the waist rest comprises a waist rest body 1, wherein rotating shafts 3 are arranged on two sides of the waist rest body 1 in a mirror image mode, rotating shaft seats 4 are arranged on two sides of a support 2 corresponding to the mirror image mode, rotating grooves 5 capable of being in rotating fit with the rotating shafts 3 are formed in the rotating shaft seats 4, the rotating grooves 5 are provided with forward bayonet sockets 6, the bayonet sockets 6 and the rotating shafts 3 are arranged in an interference fit mode, and contraction openings 7 penetrating through the rotating shafts 3 are formed in the rotating shafts; during assembly, the rotating shaft 3 is clamped into the rotating groove 5 through the bayonet 6, the bayonet 6 extrudes and acts on the rotating shaft 3, the rotating shaft 3 correspondingly faces the inner side of the contraction port 7 and contracts and deforms along the radial direction, and the rotating shaft 3 can pass through the bayonet 6; after the rotating shaft 3 enters the rotating groove 5, the rotating shaft 3 is deformed and reset, so that the rotating shaft 3 is limited in the rotating groove 5 and cannot be separated. By the aid of the rotary mounting structure, the connection between the lumbar support body 1 and the bracket 2 is simple and reliable, and the lumbar support body 1 can be quickly and rotatably mounted on the bracket 2 without being connected through screws; the disassembly and the assembly are convenient, and the transportation is convenient by separately packaging and transporting so as to save the transportation cost; the user can assemble the device conveniently during assembly.

As shown in fig. 1-4, the lumbar support body 1 is in a shape of a square, and the lumbar support body 1 includes transverse support sections 1a respectively located at the upper and lower ends and side support sections 1b respectively located at the left and right sides; the rotating shaft 3 is arranged on the side supporting section 1b and horizontally extends out towards the center direction of the waist rest body 1, and the rotating shaft 3 and the waist rest body 1 are integrally formed; in addition, the position of pivot 3 is located the lower part of side support section 1b, then makes the waist lean on in the body 1 use, the rotation range that the waist leaned on body 1 upper portion is bigger, just side support section 1b be the convex arc body forward of upper portion to make the waist lean on the body 1 rotation in-process, main control is that its upper portion bulge is ejecting or shrink, make the rotation waist lean on body 1 can be obvious regulation top waist effect promptly, make the waist lean on the experience when body 1 uses and experience the impression better.

As shown in fig. 2-5, the rotating shaft seats 4 are symmetrically arranged at two sides of the bracket 2, and the rotating shaft seats 4 extend forwards; the bayonet 6 is just positioned at the front end of the rotating shaft seat 4, so that the waist rest body 1 can be directly assembled with the bracket 2 in a front-back involutory mode, and the connection is convenient. Usually, the bracket 2 of the seat is made of rigid material with higher strength, such as metal or hard plastic; therefore, the rotating shaft seat 4 has higher hardness and is not easy to deform, so that the distance between the bayonets 6 is basically not changed; the waist rest body 1 is made of plastic, so that the rotating shaft 3 can be contracted and deformed to a certain degree by arranging the contraction opening 7 in the middle of the rotating shaft 3, and the rotating shaft 3 can be clamped into the rotating groove 5; specifically, the method comprises the following steps: as shown in fig. 3, the contraction port 7 is a transverse groove extending along the axial direction of the rotating shaft 3 and penetrating through the rotating shaft 3 from front to back, so that when the rotating shaft 3 is pressed in the vertical direction, the upper end and the lower end of the rotating shaft 3 can contract towards the inside of the contraction port 7; then, when the waist rest body 1 is assembled with the bracket 2, the rotating shaft 3 is clamped into the rotating groove 5 through the bayonet 6; the bayonet 6 is in interference fit with the rotating shaft 3, and the distance between the bayonets 6 is slightly smaller than the diameter of the rotating shaft 3, so that when the rotating shaft 3 passes through the bayonet 6, the bayonet 6 can be extruded to act on the rotating shaft 3, and the rotating shaft 3 can be correspondingly contracted and deformed along the radial direction thereof, so that the rotating shaft 3 can pass through the bayonet 6; when the rotating shaft 3 completely enters the rotating groove 5, the rotating shaft 3 can be automatically deformed and reset to limit the rotating shaft 3 to leave the rotating groove 5, and the assembly is completed at the moment; the rotating groove 5 is an arc-shaped groove with the contour matched with the rotating shaft 3, and after the rotating shaft 3 is clamped into the rotating groove 5, the rotating shaft 3 is in running fit with the rotating groove 5, so that the waist support body 1 can be adjusted in a rotating mode relative to the support 2 in the using process. Through the connecting structure, the connecting structure of the waist rest body 1 and the bracket 2 is very simplified, the operation is very simple, and only the rotating shaft 3 needs to be clamped into the rotating groove 5 through the bayonet 6; in addition, in the use of the lumbar support body 1, the user applies backward extrusion force to the lumbar support body 1, so that the lumbar support body 1 cannot be separated from the bracket 2 in the use process. In addition, in order to make the deformation effect of the rotating shaft 3 better, the distance between the constrictions 7 is between 2/5 and 3/5 of the diameter of the rotating shaft 3, in this embodiment, the distance between the constrictions 7 is half of the diameter of the rotating shaft 3, so that the strength of the rotating shaft 3 can be ensured, and the rotating shaft 3 is kept to have a certain deformation amount.

Furthermore, as shown in fig. 4, the end of the rotating shaft 3 is further provided with a limiting block 8 extending backwards, so that the rotating shaft seat 4 is limited between the side supporting section 1b and the limiting block 8, the waist support body 1 is prevented from shaking in the left-right direction, and the experience is poor.

As shown in fig. 1 and 6, a vertical supporting elastic sheet 9 is further arranged between the upper end of the lumbar support body 1 and the support 2, the supporting elastic sheet 9 has elasticity, the upper end of the supporting elastic sheet 9 is connected to the upper end of the lumbar support body 1, and the lower end of the supporting elastic sheet 9 is connected to the support 2; support shell fragment 9 can provide the waist and lean on body 1 holding power, and make the waist lean on body 1 under the user state for the waist leans on body 1 can take place elasticity in the front and back direction and rotate, thereby makes the waist lean on body 1 to have certain self-adaptation regulatory function, and the user uses more comfortablely. Further, the method comprises the following steps: support the upper end of shell fragment 9 and the upper end that the waist leaned on body 1 cooperate for the joint, specifically indicate: a notch 10 is arranged in the middle of a transverse support section 1a at the upper end of the waist rest body 1, and an elastic clamping tongue 11 and a clamping block 12 positioned below the elastic clamping tongue 11 are correspondingly arranged at the upper end of the support elastic sheet 9; during connection, the upper end of the supporting elastic sheet 14 passes through the bayonet 17 to enable the elastic clamping tongue 18 to be clamped out of the bayonet 17, and the transverse supporting section 16 is limited between the elastic clamping tongue 18 and the clamping block 19, so that the upper end of the supporting elastic sheet 14 and the lumbar support body 1 are relatively fixed in the vertical direction; the supporting elastic sheet 14 and the waist rest body 1 are clamped, so that connection is convenient and rapid, stress is relatively dispersed, and if the supporting elastic sheet and the waist rest body are connected through screws, stress is concentrated on one point, so that material fracture is easily caused.

To sum up, the utility model discloses a waist is by rotating mounting structure for the waist is by being connected between body 1 whole and support 2 and need not to use the screw, and the mode that adopts the joint can realize assembly between them and dismantle, and the operation is very light and handy laborsaving.

The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art should understand that without departing from the spirit of the present invention, the person skilled in the art should not inventively design the similar structural modes and embodiments to the technical solution, and all shall fall within the protection scope of the present invention.

Claims (10)

1. The utility model provides a waist leans on rotation mounting structure which characterized in that: comprises a lumbar support body and a bracket for supporting the lumbar support body; the waist rest body is rotatably connected to the bracket, and the waist rest body is detachably connected with the bracket; rotating shafts are arranged on two sides of the waist rest body in a mirror image mode, and rotating shaft seats are arranged on two sides of the bracket in a corresponding mirror image mode; the rotating shaft seat is provided with a rotating groove which can be in rotating fit with the rotating shaft, and the rotating groove is provided with a bayonet facing the front; the bayonet is configured to be in interference fit with the rotating shaft, and a contraction opening penetrating through the rotating shaft is arranged in the rotating shaft; the rotating shaft enters the rotating groove through the bayonet, and the bayonet extrudes and acts on the rotating shaft to enable the rotating shaft to correspondingly face the inner side of the contraction opening and contract and deform along the radial direction; after the rotating shaft passes through the bayonet, the rotating shaft is deformed and reset to limit the rotating shaft to be separated from the rotating groove.

2. The lumbar support rotation mounting structure of claim 1, wherein: the waist leans on the body to be "mouth" style of calligraphy, and the waist leans on the body including the horizontal support section that is located both ends about being located respectively and the collateral branch support section that is located the left and right sides respectively, and the pivot setting is on the collateral branch support section and stretches out towards the central direction level that the body was leaned on to the waist.

3. The lumbar support rotation mounting structure of claim 1, wherein: the contraction opening is a transverse groove which extends along the axial direction of the rotating shaft and penetrates through the rotating shaft from front to back.

4. A lumbar support pivot mounting structure as set forth in claim 3, wherein: the constrictions are arranged at the middle position of the rotating shaft, and the spacing of the constrictions is between 2/5 and 3/5 of the diameter of the rotating shaft.

5. A lumbar support pivot mounting structure as set forth in claim 2, wherein: the end part of the rotating shaft is also provided with a limiting block extending backwards, and the rotating shaft seat is limited between the limiting block and the side supporting section.

6. The lumbar support rotation mounting structure of claim 1, wherein: the support is made of metal or hard plastic.

7. The lumbar support rotation mounting structure of claim 2, wherein: the position of the rotating shaft is located at the lower part of the side supporting section.

8. The lumbar support rotation mounting structure of claim 2, wherein: the side supporting sections are arc-shaped bodies with the upper parts protruding forwards.

9. The lumbar support rotation mounting structure of claim 1, wherein: a vertical supporting elastic sheet is arranged between the waist rest body and the support, and the supporting elastic sheet correspondingly generates elastic deformation in response to the rotation of the waist rest body.

10. A lumbar support pivot mounting arrangement according to claim 9, wherein: the upper end of the supporting elastic sheet is in clamping fit with the waist rest body, the upper end of the waist rest body is provided with a notch, and the upper end of the supporting elastic sheet is correspondingly provided with an elastic clamping tongue and a clamping block which are spaced up and down; the upper end of the supporting elastic sheet penetrates out of the notch upwards and the elastic clamping tongue is clamped outside the notch, and the elastic clamping tongue and the clamping block limit the upper end of the supporting elastic sheet and the waist rest body to be fixed relatively in the vertical direction.

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