CN217695752U

CN217695752U - Foot rest lifting adjusting mechanism

Info

Publication number: CN217695752U
Application number: CN202221580485.2U
Authority: CN
Inventors: 朱月新
Original assignee: Zhejiang Kemi Bear Technology Co ltd
Current assignee: Zhejiang Kemi Bear Technology Co ltd
Priority date: 2022-06-22
Filing date: 2022-06-22
Publication date: 2022-11-01
Anticipated expiration: 2032-06-22

Abstract

The utility model discloses a footrest lifting adjusting mechanism, which comprises a base, wherein the base comprises chair foot bases arranged in a left-right mirror image manner and longitudinal chair legs vertically arranged on each chair foot base; the leg rest supporting piece is arranged on the two chair legs in a sliding manner; the foot rest supporting piece is integrally and horizontally arranged and comprises sliding connecting parts which are respectively arranged at the left side end and the right side end and are used for being in sliding connection with the chair legs; the sliding connection part is arranged at the inner side of the chair leg; the inner sides of the chair legs are provided with longitudinal sliding supporting seats, and the sliding connecting parts are correspondingly provided with sliding sleeves which are in sliding fit with the sliding supporting seats; the adjusting switch is provided with a transverse locking rod; the sliding support seat is provided with positioning holes at intervals longitudinally; in a locking state, the locking rod penetrates through the sliding sleeve and is connected in the positioning hole so as to limit the leg rest support in the vertical direction; in an unlocking state, the locking rod is withdrawn from the positioning hole under the action of the adjusting switch, and the leg rest supporting piece can slide up and down along the chair leg.

Description

Foot rest lifting adjusting mechanism

Technical Field

The utility model relates to a thing to sit on field, in particular to bracket lift adjustment mechanism.

Background

The chair has strong practicability and can be found in all rooms, and the chair has the main function of facilitating people to have a rest. At present, the requirements of people for chairs are increasing, and chairs with various purposes, such as office chairs, leisure chairs, learning chairs and the like, also appear.

The study chair is a chair for children to study and write. The heights of the seat and the back of the current learning chair can be adjusted to adapt to the growing height of children; the bottom of the seat is also provided with the foot rest, so that the feet of the child can be placed on the foot rest when the child learns, and the incorrect sitting posture caused by the hanging of the feet away from the ground is avoided; however, the leg rest of most of the prior seats cannot be adjusted in a lifting way, and the leg rest is always fixed on the base; "children's chair" as CN201620139221.1 discloses, it includes at the bottom of cushion, seat pole, the chair, the cushion pass through the seat pole and fix at the bottom of the connecting hole internal connection chair, the chair bottom be equipped with a plurality of chair bottom support frame, chair bottom support frame on be equipped with the card hole, the card hole on be equipped with bracket pad and footrest, be provided with 3 recesses on the footrest, recess bottom be equipped with the through-hole that is used for connecting the bracket pad. The children's foot rest is convenient for children with different heights by arranging the foot rest, children can rest feet on the slightly higher foot rest, and safety of the children is guaranteed, and using comfort is achieved. But the height of the footrest can not be adjusted and is always fixed; this results in a smaller child, who may have both feet difficult to place on the footrest; resulting in limited use.

The chinese utility model patent of CN201620460166.6 discloses a "chair leg with height adjustable pedal and a learning chair using the same", the chair leg comprises a chair leg main body and a plurality of support legs; the supporting legs are arranged around the chair leg main body in a divergent mode; wherein, two connected feet are respectively provided with a pedal for a user to put on the feet; each pedal comprises a pedal, a connecting rod, at least one cushion block and a hand wheel; wherein the pedal is positioned above the support leg and connected with the connecting rod; the cushion block is arranged on the connecting rod in a penetrating way; the connecting rod passes through the supporting leg from top to bottom; the hand wheel is positioned below the supporting foot and is connected with the connecting rod. The height of the pedals can be adjusted by increasing the number of the cushion blocks, but the adjusting mode is not easy; and the thickness of the cushion block is limited, so that the adjusting range of the height of the pedal is limited. Secondly, the arrangement of a plurality of spacers also results in an aesthetically unpleasing structure.

In addition, the children chair with adjustable leg rest is also provided, and two ends of the leg rest are respectively connected to the left and right spaced chair feet at the bottom of the children chair through screws; the chair legs are longitudinal, and a plurality of longitudinally spaced mounting hole positions are arranged on the chair legs; when the height of the leg rest needs to be adjusted, the leg rest is detached from the chair feet, and then the leg rest is connected and fixed at the mounting hole position with the corresponding height. Although the height of the footrest can be adjusted, the footrest needs to be detached and then installed when being adjusted each time, and the adjustment operation is undoubtedly complicated.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provide a footrest lifting adjusting mechanism with ingenious design and simple structure; the leg rest supporting piece is connected between the two chair legs in a sliding way through the sliding sleeve, so that the leg rest supporting piece can be conveniently adjusted in an up-and-down movement way; the leg rest supporting piece can be limited at different heights by the locking rod on the adjusting switch penetrating through the sliding sleeve and being connected to the positioning holes at different heights; the leg rest supporting piece is simple and convenient to adjust and operate.

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

a footrest lift adjustment mechanism comprising: the base comprises chair foot bases arranged in a left-right mirror image manner and longitudinal chair legs vertically arranged on each chair foot base; the leg rest supporting piece is arranged on the two chair legs in a sliding manner; the foot rest supporting piece is integrally and horizontally arranged and comprises sliding connecting parts which are respectively arranged at the left side end and the right side end and are used for being in sliding connection with the chair legs; the sliding connection part is arranged at the inner side of the chair leg; the inner sides of the chair legs are provided with longitudinal sliding supporting seats, and the sliding connecting parts are correspondingly provided with sliding sleeves which are in sliding fit with the sliding supporting seats; the adjusting switch is provided with a transverse locking rod; the sliding support seat is provided with positioning holes at intervals longitudinally; in a locking state, the locking rod penetrates through the sliding sleeve and is connected in the positioning hole so as to limit the leg rest support piece in the vertical direction; in an unlocking state, the locking rod is withdrawn from the positioning hole under the action of the adjusting switch, and the leg rest supporting piece can slide up and down along the chair leg.

Preferably, the sliding support seat protrudes out of the inner side surface of the chair leg, and the sliding support seat is of a cuboid structure; the sliding sleeve is of a U-shaped structure and comprises sliding plates attached to the left and right sides of the inner side surface of the sliding support seat and side wall plates arranged on the front and rear sides of the sliding plates and surrounding the sliding support seat; the sliding sleeve is sleeved on the sliding support seat from top to bottom. During assembly, the two sliding sleeves are sleeved on the sliding supporting seats on the two sides from top to bottom simultaneously, so that the leg rest supporting piece can be connected to the two chair legs in a sliding manner; the sliding sleeve is matched with the sliding support seat to limit the leg support piece and the chair leg in the front-back direction and the left-right direction, so that the sliding sleeve can only slide up and down along the sliding support seat; and then the design is ingenious.

Preferably, the footrest support member is formed by integrally bending a metal pipe, the sliding sleeve is of a metal structure, and the sliding sleeve and the sliding connection part are welded and fixed. So that the structure of the leg rest support is stable.

Preferably, the sliding support seat comprises a support main body of a metal structure and a sliding support shell sleeved on the support main body; the sliding support shell is made of plastic; the support main body is welded on the inner side surface of the chair leg, and the sliding sleeve is in sliding fit on the sliding support shell. The sliding sleeve and the supporting main body are made of metal materials, so that the locking rod is inserted between the sliding sleeve and the supporting main body to ensure the stable structure; the sliding sleeve is in contact with the sliding support shell, so that metal is in contact with plastic, the sliding sleeve slides smoothly, and noise is avoided. Otherwise, if the sliding sleeve is directly contacted with the supporting body, metal is contacted with metal, so that sharp noise can be generated during sliding, and the use experience is influenced; the design is more thorough.

Preferably, the positioning holes are longitudinally arranged on the inner side surface of the support main body at intervals; correspondingly, the inner side surface of the sliding support shell is provided with a longitudinal hollow groove which enables the positioning hole to be exposed outside.

Preferably, the sliding sleeve is provided with a longitudinal connecting vertical groove; and in a locking state, the locking rod penetrates through the connecting vertical groove and is connected in the positioning hole on the sliding support seat. The connecting vertical groove is arranged, so that a user can directly and conveniently see the position of the positioning hole in the sliding process of the sliding sleeve, and the locking rod can be conveniently controlled to be quickly connected into the positioning hole during connection; and under the locking state, the sliding sleeve moves downwards under the action of gravity to enable the locking rod to be abutted against the upper end of the connecting vertical groove, so that the sliding sleeve is limited.

Preferably, the sliding sleeve is provided with a connecting hole; in the locking state, the locking rod penetrates through the connecting hole and is connected in the positioning hole on the sliding support seat. The locking rod penetrates through the connecting hole and is connected in the positioning holes with different heights, so that the leg rest supporting piece can be locked at the adjusting position with different heights, and the height of the leg rest supporting piece is accurately adjusted.

Preferably, the adjusting switch is further provided with a pressing block at the root of the locking rod, and in the locking state, the pressing block can abut against the sliding sleeve and enables the sliding sleeve to be in press fit with the sliding supporting seat. Thereby further keeping the sliding sleeve and the sliding support seat relatively stable; so that the foot rest support remains stable at this adjusted height.

Preferably, the footrest support is in a U shape, and comprises a footrest main body positioned at the front end of the base transversely and support side bodies positioned at the left side and the right side of the footrest main body; the sliding connection portion is provided at an end portion of the support side body. The feet of the user can be directly placed on the leg rest main body, so that the use is comfortable.

Preferably, the locking rod is a bolt, and the positioning hole is configured to have an internal thread. And the bolt is connected in a threaded manner, so that the connection is more convenient.

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

firstly, in the footrest lifting adjusting mechanism of the utility model, the footrest supporting piece is connected with the chair leg through the sliding sleeve in a sliding way, and the sliding sleeve can be locked and unlocked in a sliding way through the adjusting switch; when the height of the leg rest supporting piece needs to be adjusted, the locking rod is withdrawn from the positioning hole only by rotating the adjusting switch, and then the leg rest supporting piece is directly acted to move up and down; after the adjustment is finished, connecting the locking rod to the positioning hole at the corresponding position again; the adjustment operation is very convenient, and light and labor-saving.

Secondly, the sliding connection part is arranged at the inner side of the chair leg; when the leg rest supporting piece is matched with the chair legs, the two sliding sleeves are required to be sleeved on the sliding supporting seats at the two sides from top to bottom simultaneously, so that the leg rest supporting piece is connected to the two chair legs in a sliding mode. And, can be spacing around direction and the right-left direction to bracket support piece and chair leg after sliding sleeve and the cooperation of sliding support seat for the sliding sleeve can only follow sliding support seat and slide from top to bottom, makes sliding structure firm.

Moreover, the locking rod can be quickly connected in the positioning hole or separated from the positioning hole only by rotating the adjusting switch by utilizing threaded connection; so that the locking and unlocking of the sliding connection is rapid.

In addition, the sliding sleeve is made of metal, and the sliding support seat comprises a metal support main body and a plastic sliding support shell; the sliding sleeve and the supporting main body are made of metal materials, so that the locking rod is inserted between the sliding sleeve and the supporting main body to ensure the stable structure; the sliding sleeve is sleeved on the sliding support shell, so that metal is in contact with plastic, sliding is smooth, and noise is not generated; the structure design is ingenious.

Drawings

Fig. 1 is a schematic view of a leg rest support in embodiment 1 of the present invention in a downward three-dimensional structure;

fig. 2 is a schematic perspective view of the leg rest support member of the present invention in embodiment 1;

fig. 3 is a schematic perspective view of the leg rest support and the leg of the chair according to embodiment 1 of the present invention;

fig. 4 is a schematic perspective view of the sliding sleeve and the sliding support seat of the present invention in embodiment 1;

fig. 5 is a schematic perspective view of the connection and engagement of the locking rod, the sliding sleeve and the sliding support seat in embodiment 1 of the present invention;

fig. 6 is a schematic perspective view of the sliding support housing and the support body according to embodiment 1 of the present invention;

fig. 7 is a schematic view of the three-dimensional structure of the embodiment 2 of the present invention, in which the locking rod is connected and matched with the sliding sleeve and the sliding support seat.

The figures are numbered: a base 1; a chair leg base 2; a chair leg 3; a leg rest support 4; a leg rest body 4a; a support side body 4b; a slide connection portion 5; a sliding support seat 6; a support body 6a; a slide support housing 6b; a sliding sleeve 7; a slide plate 7a; side coamings 7b; an adjustment switch 8; a locking lever 8a; positioning holes 9; a hollowed-out groove 10; a connecting vertical slot 11; briquetting 12; and a connecting hole 13.

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 specific implementation manner of the utility model is as follows:

example 1: as shown in fig. 1-6, the present invention provides a footrest lifting adjusting mechanism, which comprises a base 1, wherein the base 1 comprises left and right mirror-image chair foot bases 2 and longitudinal chair legs 3 vertically arranged on each chair foot base 2; the seat foot base 2 is configured to contact the ground. Leg rest supports 4 are arranged on the two chair legs 3, the leg rest supports 4 are in a horizontal U shape, and each leg rest support 4 comprises a leg rest main body 4a which is transversely arranged at the front end of the base 1 and support side bodies 4b which are arranged at the left side and the right side of the leg rest main body 4a; the end of each supporting side body 4b is provided with a sliding connecting part 5, and the sliding connecting part 5 is arranged at the inner side of the chair leg 3; a longitudinal sliding support seat 6 is arranged on the inner side of the chair leg 3, and a sliding sleeve 7 which is in sliding fit with the sliding support seat 6 is correspondingly arranged on the sliding connection part 5; the sliding sleeve 7 can move up and down along the sliding support seat 6 to adjust the height of the leg rest support 4. The leg rest support device is characterized by further comprising an adjusting switch 8, wherein a transverse locking rod 8a is arranged on the adjusting switch 8, a positioning hole 9 with a longitudinal interval is formed in the end face of the inner side of the sliding support seat 6, the locking rod 8a penetrates through the sliding sleeve 7 and is connected into the positioning hole 9 to limit the sliding sleeve 7 in the vertical direction, and therefore the leg rest support piece 4 can be adjusted to different heights. Make bracket support piece 4's regulation operation very simple convenient, only need control sliding sleeve 7 to slide to predetermineeing adjusting position along sliding support 6, then make locking lever 8a connect and carry on spacingly to sliding sleeve 7 in locating hole 9 through effect regulating switch 8, make bracket support piece 4 stop at the height that needs.

As shown in fig. 3-6, the slide support 6 protrudes from the inner side of the chair leg 3, and the slide support 6 is a rectangular parallelepiped; the sliding sleeve 7 is of a U-shaped structure, and the sliding sleeve 7 comprises a sliding plate 7a attached to the left and right of the inner side of the sliding support seat 6 and side wall plates 7b respectively arranged on the front side and the rear side of the sliding plate 7a; the sliding connection part 5 is connected with a side wall plate 7b at the front end. The interval between the two sliding sleeves 7 is matched with the interval between the two sliding supporting seats 6; during assembly, the two sliding sleeves 7 are sleeved on the sliding support seats 6 at two sides from top to bottom, so that the leg rest support 4 is connected between the two chair legs 3 in a sliding manner; after the connection, the sliding sleeve 7 is matched with the sliding support seat 6 to limit the leg supporter 4 and the chair leg 3 in the front-back direction and the left-right direction, so that the sliding sleeve 7 can only slide up and down along the sliding support seat 6; the structure is stable, and the design is ingenious.

Further comprising: as shown in fig. 6, the footrest support member 4 is integrally formed by bending a metal pipe, the sliding sleeve 7 is of a metal structure, and the sliding sleeve 7 is welded and fixed to the sliding connection portion 5; thereby stabilizing the structure of the footrest support 4. The sliding support seat 6 comprises a support main body 6a of a metal structure and a sliding support housing 6b sleeved on the support main body 6a, wherein the sliding support housing 6b is a plastic part, and specifically comprises: the support main body 6a is welded and fixed on the inner side of the chair leg 3, and the sliding support shell 6b is directly sleeved on the support main body 6 a. Sliding sleeve 7 sliding sleeve on sliding support shell 6b, then make sliding sleeve 7 with sliding support shell 6b contact, then make metal and plastics contact for sliding sleeve 7 slides the in-process smoothly, avoids producing the noise. Otherwise, if the sliding sleeve 7 is directly contacted with the supporting body 6a, metal is contacted with metal, so that sharp noise is generated during sliding, and the use experience is influenced; the design is more thorough.

As shown in fig. 3-6, the positioning holes 9 are longitudinally spaced on the inner side of the support body 6a, and correspondingly, longitudinal hollow-out grooves 10 are formed on the inner side of the sliding support housing 6b; so that the positioning hole 9 can be exposed to the outside by the hollowed groove 10. And the sliding plate 7a of the sliding sleeve 7 is also provided with a longitudinal connecting vertical slot 11, so that the locking rod 8a can pass through the connecting vertical slot 11 and is connected in the positioning hole 9. Specifically, the method comprises the following steps: the locking rod 8a is a bolt, and the positioning hole 9 is configured to have an internal thread; then, the locking rod 8a can be connected in the positioning hole 9 or separated from the positioning hole 9 only by rotating the adjusting switch 8, so that the connection is very convenient; the connecting vertical groove 11 is arranged on the sliding plate 7a, so that a user can directly and conveniently see the position of the positioning hole 9 in the sliding process of the sliding sleeve 7, and the locking rod 8a can be conveniently and quickly controlled to be connected into the positioning hole 9 in the connection process; and under the locking state, the sliding sleeve 7 moves downwards under the action of the gravity of the leg rest support piece 4, so that the locking rod 8a is abutted against the upper end of the connecting vertical groove 11, and the sliding sleeve 7 is limited, so that the leg rest support piece 4 is stopped at the height adjusting position.

Further, as shown in fig. 5, a pressing block 12 is further disposed at the root of the adjusting switch 8 located at the locking rod 8a, and in the locked state, the locking rod 8a is connected to the rear of the positioning hole 9; the pressing block 9 can abut against the sliding plate 7a, and the pressing block 9 can act on the sliding plate 7a to enable the sliding plate 7a to be pressed on the sliding support seat 6; so that the sliding sleeve 7 and the sliding support seat 6 can be kept relatively stable; so that the foot rest support 4 remains stable at this adjusted height.

Then, in the footrest lifting adjusting mechanism of the utility model, the footrest supporting piece 4 is connected to the chair leg 3 through the sliding sleeve 7 in a sliding way, and the sliding sleeve 7 can be locked and unlocked in a sliding way through the adjusting switch 8; then, when the height of the leg rest support part 4 needs to be adjusted, the locking rod 8a is withdrawn from the positioning hole 9 only by rotating the adjusting switch 8, and then the leg rest support part 4 is directly acted to move up and down; after the adjustment is finished, connecting the locking rod 8a to the positioning hole 9 at the corresponding position again; the adjustment operation is very convenient.

Example 2: as shown in fig. 7, the present embodiment is different from embodiment 1 in that: a connecting hole 13 is arranged on the sliding plate 7a; after the leg rest supporting piece 4 is adjusted to a proper position, the connecting hole 13 is superposed with the positioning hole 9 at the corresponding position; then, the locking rod 8a passes through the connecting hole 13 and is connected in the positioning hole 9, so that the leg rest support 4 can be locked at the adjusting position, and the height of the leg rest support 4 can be adjusted more accurately.

Claims

1. A leg rest lift adjustment mechanism, its characterized in that includes:

the base comprises chair foot bases arranged in a left-right mirror image manner and longitudinal chair legs vertically arranged on each chair foot base;

the leg rest supporting piece is arranged on the two chair legs in a sliding manner; the foot rest supporting piece is integrally and horizontally arranged and comprises sliding connecting parts which are respectively arranged at the left side end and the right side end and are used for being in sliding connection with the chair legs; the sliding connection part is arranged at the inner side of the chair leg; the inner sides of the chair legs are provided with longitudinal sliding supporting seats, and the sliding connecting parts are correspondingly provided with sliding sleeves which are in sliding fit with the sliding supporting seats;

the adjusting switch is provided with a transverse locking rod; the sliding support seat is provided with positioning holes at intervals in the longitudinal direction; in a locking state, the locking rod penetrates through the sliding sleeve and is connected in the positioning hole so as to limit the leg rest support in the vertical direction; in an unlocking state, the locking rod is withdrawn from the positioning hole under the action of the adjusting switch, and the leg rest supporting piece can slide up and down along the chair leg.

2. The leg rest lift adjustment mechanism of claim 1 wherein: the sliding support seat protrudes out of the inner side surface of the chair leg, and is of a cuboid structure; the sliding sleeve is of a U-shaped structure and comprises sliding plates attached to the left and right sides of the inner side surface of the sliding support seat and side wall plates arranged on the front and rear sides of the sliding plates and surrounding the sliding support seat; the sliding sleeve is sleeved on the sliding support seat from top to bottom.

3. The leg rest elevation adjustment mechanism of claim 1 wherein: the bracket support piece is formed by integrally bending a metal pipe, the sliding sleeve is of a metal structure, and the sliding sleeve is welded and fixed with the sliding connection part.

4. The leg rest lift adjustment mechanism of claim 3 wherein: the sliding support seat comprises a support main body with a metal structure and a sliding support shell sleeved on the support main body; the sliding support shell is made of plastic; the support main body is welded on the inner side surface of the chair leg, and the sliding sleeve is in sliding fit on the sliding support shell.

5. The leg rest lift adjustment mechanism of claim 4, wherein: the positioning holes are longitudinally arranged on the inner side surface of the support main body at intervals; correspondingly, the inner side surface of the sliding support shell is provided with a longitudinal hollow groove which enables the positioning hole to be exposed outside.

6. The leg rest elevation adjustment mechanism of claim 1 wherein: the sliding sleeve is provided with a longitudinal connecting vertical groove; and in a locking state, the locking rod penetrates through the connecting vertical groove and is connected in the positioning hole on the sliding support seat.

7. The leg rest elevation adjustment mechanism of claim 1 wherein: the sliding sleeve is provided with a connecting hole; in the locking state, the locking rod penetrates through the connecting hole and is connected in the positioning hole on the sliding support seat.

8. The footrest elevation adjustment mechanism of claims 6 or 7, wherein: the root that regulating switch is located the locking lever still is equipped with the briquetting, under the locking state, the briquetting can support on the sliding sleeve and make sliding sleeve and sliding support seat press fit.

9. The footrest elevation adjustment mechanism of claim 1 or 3 wherein: the leg rest support piece is U-shaped and comprises a leg rest main body and support side bodies, wherein the leg rest main body is transversely arranged at the front end of the base, and the support side bodies are arranged at the left side and the right side of the leg rest main body; the sliding connection part is arranged at the end part of the support side body.

10. The leg rest elevation adjustment mechanism of claim 1 wherein: the locking rod is a bolt, and the positioning hole is configured to be provided with an internal thread.