CN109602213B

CN109602213B - Growth chair

Info

Publication number: CN109602213B
Application number: CN201811529641.0A
Authority: CN
Inventors: 邢继全; 萧璧临
Original assignee: Qingdao Jiaxi Smart Home Co ltd
Current assignee: Qingdao Jiaxi Smart Home Co ltd
Priority date: 2018-12-14
Filing date: 2018-12-14
Publication date: 2024-04-30
Anticipated expiration: 2038-12-14
Also published as: WO2020119499A1; CN109602213A

Abstract

The invention discloses a growing chair which comprises a longitudinal bracket, a connecting cross rod, a backrest, a seat plate and a pedal, wherein the seat plate and the pedal are detachably connected with the longitudinal bracket; the side-pulling type connecting piece comprises a box-type main body, a horizontal rotating arm and a sliding block, wherein the sliding block comprises a sliding main body, a connecting column hinged with the horizontal rotating arm and a clamping end, and the clamping end is in wedge-shaped arrangement; the outer side surface of the box-type main body is provided with a window for the clamping end of the sliding block to enter and exit; the middle part of the rotating arm is pivoted in the box-type main body, the outer end of the rotating arm extends out of the box-type main body to form a poking part, the inner end of the rotating arm is provided with a connecting hole for the connecting column of the sliding block to be spliced, and the inner end of the rotating arm is elastically connected with the inner wall of the box-type main body through a connecting torsion spring. Through the cooperation of the seat plate, the pedal and the first horizontal sliding grooves with different heights, the height adjustment of the seat plate and the pedal is realized, and the application range of the growth chair is enlarged.

Description

Growth chair

Technical Field

The invention relates to the field of household articles, in particular to a growth chair.

Background

Various infant chairs exist in the market at present, but the use objects of the infant chairs aim at infants within 1-3 years, the use time is short, the use requirements of older children in different stages cannot be met, the application range is narrow, and certain resource waste is caused; in addition, the existing detachable child chair is inconvenient to use, is very hard to assemble and disassemble, and can easily solve the problem that connection among parts is loose after being disassembled and assembled for multiple times, so that the service life of the child chair is shortened.

Thus, the prior art is still to be further developed.

Disclosure of Invention

Aiming at the technical problems, the embodiment of the invention provides the detachable growing chair which can meet the use requirements of children in different age groups, and the height of the seat plate is adjusted to adapt to the heights of different children so as to solve the problem that the application range of the existing child chair or the existing infant chair is narrow.

The invention provides the following technical scheme:

The growing chair comprises two longitudinal brackets which are arranged symmetrically left and right, a connecting cross rod which is connected with the two longitudinal brackets, a backrest which is connected with the upper ends of the two longitudinal brackets, and a seat plate and a pedal which are respectively clamped with the two longitudinal brackets;

The opposite surfaces of the two longitudinal brackets are provided with connecting parts, the connecting parts are provided with a plurality of first horizontal sliding grooves along the vertical direction, and the inner side walls of the first horizontal sliding grooves are provided with clamping holes; the two side edges of the seat plate and the pedal are respectively clamped with different first horizontal sliding grooves through side-shifting connecting pieces;

The side shifting type connecting piece comprises a box type main body formed by clamping an upper shell and a lower shell, a horizontal rotating arm with one end hinged to the inner cavity of the box type main body, and a sliding block hinged with the horizontal rotating arm, wherein the box type main body is provided with a plurality of positioning through holes for being in threaded connection with the side edges of the bottom surface of a seat plate or a pedal;

The sliding block comprises a sliding main body and a connecting column which extends downwards from the bottom of the sliding main body and is hinged with the horizontal rotating arm, the sliding main body vertically extends out of the plane of the outer side surface of the box-type main body to form a clamping end, and the clamping end is in wedge-shaped arrangement; the outer side surface of the box-type main body is provided with a window for the clamping end of the sliding block to enter and exit;

The middle part of the horizontal rotating arm is pivoted with a connecting shaft vertically arranged in the box-type main body, the outer end of the rotating arm extends out of the box-type main body to form a poking part, the inner end of the rotating arm is provided with a connecting hole for inserting a sliding block connecting column, and the inner end of the rotating arm is also elastically connected with the inner wall of the box-type main body through a connecting torsion spring;

The side edge of the seat plate or the pedal of the side shifting type connecting piece is in sliding connection with the first horizontal chute of the longitudinal bracket, and the clamping end of the sliding block extends out of the window under the action of the torsion spring and is clamped with the clamping hole of the first horizontal chute; the poking part pokes the rotating arm horizontally outwards, and the inner end of the rotating arm drives the sliding block clamping end to withdraw from the box type main body window and retract into the box type main body.

Preferably, the upper shell comprises a fixed plate which is horizontally arranged and a sliding sleeve with left and right openings, wherein the middle part of the fixed plate is upwards protruded, the sliding main body is positioned in the sliding sleeve and is in sliding fit with the inner wall of the sliding sleeve, a first sliding chute which extends outwards is arranged on the bottom wall of the sliding sleeve along the movement track of the sliding main body, and the first sliding chute is communicated with the inner cavity of the sliding sleeve and the inner cavity of the box-type main body; the left side and the right side of the seat plate and the pedal are respectively provided with a first clamping groove for clamping the movable sleeve.

Preferably, the top surface of the upper shell extends upwards along the outer side to form a clamping plate, the clamping plate and the fixing plate surround to form a second clamping groove for clamping the seat plate or the pedal side, and the clamping plate is L-shaped or concave.

Preferably, one end of the torsion spring is inserted into the inner end of the rotary arm and penetrates through the connecting column of the sliding block, the other end of the torsion spring abuts against the inner wall of the lower shell, the upper shell or the lower shell is provided with a positioning column corresponding to the torsion spring, and the positioning column is inserted into the center hole of the torsion spring.

Preferably, a positioning through hole is coaxially arranged with the connecting shaft, and the positioning through hole is communicated with the inner cavity of the connecting shaft; and a positioning through hole penetrates through the positioning column and is coaxially arranged with the positioning column.

Preferably, the connecting part and the longitudinal bracket are integrally formed; or the connecting part is a strip-shaped clamping seat matched with the longitudinal bracket in a clamping way, a plurality of connecting holes for being in threaded connection with the longitudinal bracket are uniformly distributed on the clamping seat, and the strip-shaped clamping seat is made of wear-resistant plastic or metal.

Preferably, the side edge of the box-shaped main body extends downwards or upwards to form a sliding rail, two ends of the sliding rail are arranged in an open mode or the rear end of the sliding rail extends to the vertical direction to form a sliding terminal, the side edge of the bottom surface or the top surface of the first horizontal sliding groove extends upwards or downwards to form a strip-shaped protrusion, a second horizontal sliding groove is formed between the inner side surface of the first horizontal sliding groove and the strip-shaped protrusion, and the second horizontal sliding groove is in sliding connection with the sliding rail.

Preferably, the rear end of the strip-shaped protrusion does not extend to the rear side surface of the strip-shaped clamping seat, the distance between the rear end of the strip-shaped protrusion and the rear side surface of the strip-shaped clamping seat is greater than or equal to the width of the sliding terminal of the side-pulling type connecting piece sliding rail, and the rear end of the strip-shaped protrusion is in arc transition.

Preferably, the longitudinal support is of a herringbone structure formed by inserting a front support rod and a rear support rod, a special-shaped jack is formed by sinking a position, close to the inner side surface, of the front side surface of the front support rod, the special-shaped jack extends to the inner side surface of the front support rod, the special-shaped jack is polygonal, and an inserting part with the shape complementary to the special-shaped jack is arranged at the top end of the rear support rod; the plug-in part of the rear supporting rod is in threaded connection with the inner side wall of the special-shaped jack of the longitudinal bracket.

Preferably, the cross section of the special-shaped jack is a parallel hexagon, one side of which is parallel to the side of the longitudinal bracket, and the bottom surface of the special-shaped jack protrudes inwards to form at least one limiting part.

The growth chair provided by the embodiment of the invention has the following beneficial effects:

1. The growing chair has a simple structure, is convenient and easy to operate, and can adjust the height of the seat plate or the pedal without using an external tool; the seat plate and the pedal can be detachably connected with the first horizontal sliding grooves with different heights, so that the height of the seat plate or the pedal can be adjusted, and the use requirements of users in different growth stages can be met.

2. Through the articulated setting of above-mentioned swinging boom and slider lower extreme, turn into the horizontal migration that the slider joint end stretches out or retract box main part lateral surface window with the horizontal migration of swinging boom to realize the joint or unblock joint of side group formula connecting piece and outside cooperation structure. The rotating arm is connected with the torsion spring, so that the rotating arm can automatically return to an initial state when not acted by external force, and the clamping end of the sliding block is driven to keep the state of being clamped with the clamping hole of the external structure.

3. The sliding sleeve on the fixed plate of the upper shell can be embedded into the first clamping groove at the side edge of the seat plate, so that the connection between the side-pulling type connecting piece and the seat plate is enhanced, the direct contact between the outer wall of the sliding block and the seat plate is avoided, and the sliding resistance of the sliding block is reduced; the lug at the edge of the lower shell is blocked by being clamped with the tail end of the first chute, so that the sliding block is prevented from being separated from the tail end of the first chute in the working process.

4. The wedge-shaped arrangement of the sliding block clamping end improves the installation efficiency and convenience of the side-pulling type connecting piece, if the seat is installed, the pulling part of the rotating arm can not be pulled, the sliding block clamping end can be retracted into the retracting box type main body by directly extruding the sliding block clamping end by the side wall of the sliding groove until the sliding block clamping end reaches the clamping hole of the side wall of the first horizontal sliding groove, and the sliding block clamping end is released and clamped into the clamping hole because the sliding block clamping end does not receive outside extrusion.

5. The sliding rail arranged on the side of the box-shaped main body is matched with the second horizontal sliding groove of the strip-shaped clamping plate in a clamping way, so that the connection strength of the side-pulling type connecting piece and the longitudinal bracket is enhanced, the connection stability is improved, and the side-pulling type connecting piece is prevented from deviating in the direction perpendicular to the sliding rail and even derailing; the opposite jack of front bracing piece and the grafting portion of back bracing piece between joint and spiro union cooperation mode have improved growth chair main part frame and have connected steadiness and support intensity.

6. The seat plate is matched with the two horizontal sliding grooves and the clamping holes of the longitudinal support in a clamping way through the side-shifting type connecting piece, so that the connection strength and stability of the seat plate and the longitudinal support are greatly improved, the working efficiency of installation and disassembly is improved, labor is saved, the stable connection with the longitudinal support of the growing chair can be realized by only installing one side-shifting type connecting piece on each side edge of the seat plate, and the manufacturing cost is reduced; in addition, the side-pulling type connecting piece main body part is arranged on the bottom surface of the seat plate, the operation part of the side-pulling type connecting piece main body part is far away from the reachable area when a child sits, dangerous accidents caused by false contact of the child in low age are prevented, and the use safety is improved.

Drawings

FIG. 1 is a schematic view of the overall structure of the bench of the present invention;

Fig. 2 is a schematic perspective view of a side-pulling type connector in embodiment 1 of the present invention;

Fig. 3 is a schematic perspective view of an upper housing of the side-pulling connector in embodiment 1 of the present invention;

FIG. 4 is a schematic diagram illustrating the internal structure of a side-pulling type connector according to embodiment 1 of the present invention;

FIG. 5 is a schematic diagram of a latch according to embodiment 1 of the present invention;

FIG. 6 is a schematic diagram showing a connection structure between a side-pulling type connector and a seat plate in embodiment 1 of the present invention;

fig. 7 is a schematic perspective view of a side-pulling connector in embodiment 2 of the present invention;

FIG. 8 is an exploded view of the side-pulling connector of embodiment 2;

Fig. 9 is a schematic perspective view of an upper housing of a side-pulling type connector in embodiment 2 of the present invention;

fig. 10 is a schematic bottom perspective view of the upper housing of the side-pulling connector in embodiment 2 of the present invention;

FIG. 11 is a schematic diagram showing the connection structure between a side-pulling type connector and a seat plate in embodiment 2 of the present invention;

Fig. 12 is a schematic perspective view of a seat according to the present invention;

fig. 13 is a schematic bottom perspective view of a seat plate with a side-pulling type connector according to embodiment 2 of the present invention;

Fig. 14 is a schematic perspective view of a strip-shaped card holder according to embodiment 2 of the present invention;

FIG. 15 is a schematic side view of a card holder according to embodiment 2 of the present invention;

fig. 16 is a schematic diagram illustrating a front view of a strip-shaped card holder according to embodiment 2 of the present invention;

Fig. 17 is a schematic perspective view of a longitudinal support in embodiment 2 of the present invention;

FIG. 18 is a schematic view showing the structure of the front support bar of the longitudinal support in embodiment 2 of the present invention;

Fig. 19 is a schematic structural view of a rear support bar of a longitudinal bracket in embodiment 2 of the present invention.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.

It will be understood that when an element is referred to as being "fixed" to another element, it can be directly on the other element or one or more intervening elements may be present therebetween. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or one or more intervening elements may be present therebetween. The terms "vertical," "horizontal," "left," "right," "upper," "lower," "inner," "outer," "bottom," "front," "rear," and the like as used herein refer to an orientation or positional relationship based on that shown in fig. 1, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used in this specification includes any and all combinations of one or more of the associated listed items. In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.

The growing chair shown in fig. 1 comprises two longitudinal brackets 1 which are symmetrically arranged left and right, a connecting cross rod 2 which is connected with the two longitudinal brackets 1, a backrest 3 which is connected with the upper ends of the two longitudinal brackets, and a seat plate 4 and a pedal 5 which are respectively clamped with the two longitudinal brackets 1. The opposite surfaces of the two longitudinal brackets 1 are provided with connecting parts 6, the connecting parts 6 are provided with a plurality of first horizontal sliding grooves 61 along the vertical direction, the inner side walls of the first horizontal sliding grooves 61 are provided with clamping holes, and the two side edges of the seat 4 and the pedal 5 are respectively connected with the different first horizontal sliding grooves 61 and the clamping holes in a clamping way through side-pulling type connecting pieces 7. In the present invention, the pedal 5 is connected to the other structure in the same manner as the seat plate 4.

The seat plate 4 or the pedal 5 is detachably connected with the first horizontal sliding grooves 61 with different heights, so that the height of the seat plate 4 or the pedal 5 is adjusted, and the use requirements of children in different growth stages are met. The bench is made of solid wood, metal or plastic, and is preferably made of solid wood in view of safety in use.

The present invention is described in detail below with reference to various embodiments.

Example 1

In this embodiment, as shown in fig. 2-6, the side-pulling type connecting piece 7 includes a box-shaped main body 70 formed by clamping an upper shell 71 and a lower shell 72, a rotating arm 73 with one end hinged in the inner cavity of the box-shaped main body 70 and horizontally arranged, a sliding block 74 hinged with the rotating arm 73, and a plurality of positioning through holes 77 for being screwed with the bottom surface side of the seat 4 or the pedal 5 are arranged on the box-shaped main body 70.

As shown in fig. 5, the slider 74 includes a sliding main body 741 and a connecting post 742 extending downward from the bottom of the sliding main body and hinged to the horizontal rotating arm 73, where the sliding main body 741 extends vertically out of the plane of the outer side surface of the box-shaped main body 70 to form a clamping end 743, and the clamping end 743 is in a wedge-shaped arrangement; the outer side of the cassette body 70 is provided with a window 76 for the entry and exit of the slider engagement end 743. The wedge-shaped clamping end 743 facilitates the sliding block 74 to retract into the box-type main body automatically only under the extrusion action of the inner side wall of the first horizontal slideway 61, so that the installation efficiency of the seat plate or the pedal is improved, and the installation working strength is reduced.

As shown in fig. 4, the middle part of the rotating arm 73 is pivoted with a connecting shaft vertically arranged in the box-type main body 70, the outer end of the rotating arm 73 extends out of the box-type main body 70 to form a poking part 731, a connecting hole 732 for inserting a connecting column 742 of the sliding block 74 is arranged at the inner end of the rotating arm 37, and the inner end of the rotating arm 73 is also elastically connected with the inner wall of the box-type main body 70 through a connecting torsion spring 75.

The side edge of the seat plate 4 or the pedal 5, on which the side-pulling type connecting piece 7 is mounted, is slidably connected with the first horizontal sliding groove 61 of the longitudinal bracket 1. The clamping end 743 of the sliding block 74 is kept to extend out of the window 76 and is clamped with the clamping hole 62 of the first horizontal sliding groove 61 under the action of the torsion spring 75 without being acted by external force, so that the seat 4 or the pedal 5 is stably connected to the first horizontal sliding groove 61 of the longitudinal bracket 1, and the seat 4 or the pedal 5 is prevented from sliding forwards and backwards; the poking part 731 of the rotating arm 73 is poked horizontally outwards, the inner end of the rotating arm 73 drives the sliding block clamping end 743 to withdraw from the box-type main body window 76 to retract into the box-type main body 70, in this state, the seat 4 or the pedal 5 is conveniently taken out from the first horizontal sliding groove 61 of the longitudinal bracket 1, and the connection relationship between the seat 4 and the pedal is released.

The clamping end 743 of the sliding block 74 is clamped with the clamping hole 62 of the first horizontal sliding groove 61, so that the connection stability and strength of the seat 4 or the pedal 5 and the first horizontal sliding groove 61 are further enhanced, and the seat 4 or the pedal 5 is prevented from moving in position during use. The seat 4 or the pedal 5 is connected with the first horizontal sliding grooves 61 with different heights through the side-pulling type connecting piece 7, so that the height of the seat 4 or the pedal 5 is adjusted, the use requirements of children with different ages and even adults can be met by the growth chair, the application range is greatly enlarged, and the service period is prolonged.

Specifically, the upper casing 71 includes a fixing plate 710 disposed horizontally and a sliding sleeve 713 with left and right openings formed by protruding upward in the middle of the fixing plate 710, the sliding main body 741 is located in the sliding sleeve 713 and is in sliding fit with the inner wall of the sliding sleeve 13, the bottom wall of the sliding sleeve 713 is provided with a first sliding groove 7131 extending outwards along the movement track of the sliding main body 741, and the first sliding groove 7131 communicates the inner cavity of the sliding sleeve 713 with the inner cavity of the box main body 70; as shown in fig. 12, the seat 4 and the pedal 5 are provided with first engaging grooves 41 for engaging the movable sleeve 713, respectively.

The sliding body 741 slides along the first slide groove 7131 under the driving of the rotation arm 73. When the sliding sleeve 713 is installed, the sliding sleeve 713 is embedded into the first clamping groove 41 on the side edge of the seat, so that the connection stability of the side-pulling type connecting piece and the seat is enhanced, the outer wall of the sliding block 74 is prevented from being directly contacted with the seat, and the sliding resistance is reduced. The side pulling type connecting piece 7 of the embodiment 1 has simple structure, convenient use and low manufacturing cost.

As shown in fig. 4, in order to avoid the sliding block 74 from being separated from the end of the first sliding groove 7131 during operation, a protrusion 723 for blocking the end of the first sliding groove 7131 is provided at the edge of the lower housing 72, and the protrusion 723 is clamped with the first sliding groove 7131, and the protrusion 723 is concave or square-cylindrical in shape or is complementary to the contact side of the sliding block 74.

Example 2

As shown in fig. 1 and 7-10, on the basis of embodiment 1, the top surface of the upper housing 71 of the side-pulling type connector 7 extends upwards along the outer side to form a clamping plate 781, the clamping plate 781 and the fixing plate 710 enclose to form a second clamping groove 78 for clamping the side edge of the seat 4 or the pedal 5, the clamping plate 781 is L-shaped or concave, and the top surface part of the clamping plate is an arcuate surface or a square surface. As shown in fig. 12, in order to ensure the flatness of the upper surface of the seat plate 4 and improve the comfort of use, a third clamping groove 42 into which the clamping plate is embedded is provided on the seat plate 4, and the top surface of the seat plate 4 is leveled with the top surface of the clamping plate. Through the cooperation setting of second draw-in groove 78 and location through-hole 77, make sit, the side of 4 (or footboard 5) has carried out two kinds of connection cooperations of joint and spiro union simultaneously with side group formula connecting piece 7, further strengthen the connection stability of side group formula connecting piece and seat (or footboard), avoid long-term in the use, side group formula connecting piece takes place to be connected with seat (or footboard) not hard up, in addition, the cladding setting of second draw-in groove 78 to seat 4 side protects seat 4 (or footboard 5) side, avoid wearing and tearing that long-term work led to, prolonged the life of seat 4 (or footboard 5).

One end of the torsion spring 75 is inserted into the inner end of the rotation arm 73 and penetrates through the connection post 742 of the slider, and the other end of the torsion spring 75 abuts against the inner wall of the lower housing 72. As shown in fig. 9, in order to position the torsion spring 75, the upper housing 71 or the lower housing 72 is provided with a positioning post 712 corresponding to the torsion spring 75, and the positioning post 712 is inserted into a center hole of the torsion spring 75. In this embodiment, the positioning post 712 is disposed on the lower surface of the upper housing 71, and positions the torsion spring 75 through the above arrangement, so as to avoid the position deviation of the torsion spring 75 in the working process, and influence the normal working of the torsion spring 75.

Further, in order to simplify the internal structure of the side-pulling type connector 7, reduce steric hindrance, save space, the following arrangement is made: one positioning through hole 77 is coaxially arranged with the connecting shaft, the positioning through hole 77 is communicated with the inner cavity of the connecting shaft, and the other positioning through hole penetrates through the positioning column 712 and is coaxially arranged with the positioning column 712. The above arrangement enhances the connection firmness of the rotating arm 73 and the connecting shaft.

In order to improve the stability of the sliding connection between the sliding body 741 and the sliding sleeve 713, the sliding strip 744 is horizontally disposed on the front side and/or the rear side of the sliding body 741, and the second sliding groove 7132 is disposed on the front inner wall and/or the rear inner wall of the sliding sleeve 713 at a position corresponding to the sliding strip 744, and the sliding strip 744 is slidably connected with the second sliding groove 7132. In addition, the rear side or the front side of the sliding body 741, on which the sliding strip 744 is not provided, is provided with a groove, which reduces the material cost of the sliding block 74, and also reduces the friction contact surface between the side of the sliding block 74 and the inner wall of the sliding sleeve 713, thereby reducing the sliding resistance of the sliding block 74.

In this embodiment, the connecting shaft is formed by sleeving an inner positioning cylinder 721 and an outer positioning cylinder 711 respectively arranged on the lower casing 72 and the upper casing 71; or the connecting shaft is fixedly arranged on the upper shell 71 or the lower shell 72, and the length of the connecting shaft is the same as the depth of the inner cavity of the box-type main body 70.

As shown in fig. 8 and 9, at least one connecting block for connecting with the lower housing 72 is further provided on the upper housing 71, and one form of the connecting block is a connecting sheet 714 which has the same shape as the edge of the inner side wall of the lower housing and closely contacts the inner side wall of the lower housing; the connecting block can also be provided with a clamping cylinder 715, and the lower shell 72 is correspondingly provided with a clamping column 722 clamped with the clamping cylinder 715. The arrangement of the connecting blocks with various structures further improves the locking stability of the upper shell 71 and the lower shell 72.

In this embodiment, as shown in fig. 14-16, in order to facilitate maintenance and improve strength of the connection portion, the connection portion is a bar-shaped clamping seat 60 engaged with the longitudinal bracket, and a plurality of connection holes 64 for screwing with the longitudinal bracket are uniformly distributed on the clamping seat 60, and the bar-shaped clamping seat 60 is made of wear-resistant plastic or metal. In other embodiments, the connecting portion 6 is integrally formed with the longitudinal bracket 1 for cost reduction and simplified structure.

As shown in fig. 10, the side edges of the cassette body 70 extend downward or upward to form slide rails 79, and both ends of the slide rails 79 are open or the rear ends extend in the vertical direction to form slide terminals 791; the bottom surface or the top surface side of the first horizontal sliding groove 61 extends upwards or downwards to form a bar-shaped protrusion 65, a second horizontal sliding groove 63 is formed between the inner side surface of the first horizontal sliding groove 61 and the bar-shaped protrusion 65, and the second horizontal sliding groove 63 is in sliding connection with the sliding rail 79. In the present embodiment, the slide rail 79 is located at the bottom surface of the cassette main body 70, and the bar-shaped protrusion 65 is located at the bottom surface of the first horizontal slide groove 61. The sliding rail 79 is matched with the second horizontal sliding groove 63 in a clamping way, so that the connection strength of the side-pulling type connecting piece and the longitudinal support is enhanced, the connection stability is improved, and the derailment condition of the side-pulling type connecting piece perpendicular to the sliding rail 79 is avoided.

Compared with the arrangement of the sliding terminal 791 of the sliding rail, the rear end of the bar-shaped protrusion 65 does not extend to the rear side surface of the bar-shaped clamping seat 60, and the distance between the rear end of the bar-shaped protrusion 65 and the rear side surface of the bar-shaped clamping seat 60 is larger than or equal to the width of the sliding terminal 791 of the sliding rail 79 of the side-pulling type connecting piece 7, so that on one hand, the arrangement enlarges the width of a notch at the inlet of the first horizontal sliding groove 61, reduces the alignment precision and the installation difficulty of the sliding rail 79 and the second horizontal sliding groove 63 during installation, and improves the installation efficiency; on the other hand, after the seat is installed in place, the sliding terminal 791 of the sliding rail installed at the inlet of the first horizontal sliding groove 61 abuts against the rear end of the bar-shaped protrusion 65, so that the seat is limited at the required installation position finally, the seat is prevented from transiting to the sliding groove, the clamping position is missed, and the seat slides out from the other end of the first horizontal sliding groove.

Further, the rear end of the strip-shaped protrusion 65 is provided with an arc transition. The arrangement further enlarges the widths of the notches of the first horizontal sliding groove 61 and the second horizontal sliding groove 63, reduces the installation difficulty of the side-pulling type connecting piece and the strip-shaped clamping seat 60, and improves the installation efficiency.

As shown in fig. 1 and 17-19, the longitudinal support 1 has a herringbone structure formed by inserting a front support rod 11 and a rear support rod 12, a special-shaped insertion hole 13 is formed in a position, close to the inner side surface, of the front side surface of the front support rod 11 in a recessed manner, the special-shaped insertion hole 13 extends to the inner side surface of the front support rod, the special-shaped insertion hole 13 is polygonal, and an inserting part 14 with a shape complementary to that of the special-shaped insertion hole 13 is arranged at the top end of the rear support rod 12; the plug-in part 14 of the rear supporting rod 12 is in threaded connection with the inner side wall of the special-shaped jack 13 of the longitudinal bracket 1, so that the connection strength of the front supporting rod 11 and the rear supporting rod 12 is further improved, and holes for threaded connection are correspondingly formed in the plug-in part 14 and the inner side wall of the special-shaped jack 13. In this embodiment, the cross section of the shaped insertion hole 13 is a parallel hexagon with one side parallel to the side of the longitudinal support 1, and in other embodiments, the cross section of the shaped insertion hole 13 may be other shapes.

In order to improve the connection strength of the special-shaped jack 13 of the front support rod 11 and the plug-in part 14 of the rear support rod 12, and avoid that the inner wall of the opposite jack 13 and the outer edge of the plug-in part 14 are ground into a nearly circular arc shape in a long-term bearing state, the connection part of the front support rod 11 and the rear support rod 12 rotates to influence the stability of a longitudinal support and shorten the service life of a bench, the invention carries out the following improvement: the bottom surface of the special-shaped jack 13 protrudes into the hole to form at least one limit part 15. Correspondingly, the inserting part 14 is inwards recessed relative to the limiting part 15 to form a clamping groove, and the limiting part 15 and the clamping groove are complementary. The structure stability of the longitudinal support is enhanced by the clamping connection of the limiting part 15 and the clamping groove, so that the relative rotation of the front support rod 11 and the rear support rod 12 under the bearing shape is effectively avoided, and the service life of the bench is prolonged. The limiting portion 15 may be provided in a trapezoid, a triangle, a parallelogram, a non-standard variability, or the like.

In this embodiment, the bar-shaped clamping seat 60 is installed on the front supporting rod 11, in other embodiments, the bar-shaped clamping seat 60 can be arranged in 2 pairs, and is respectively and symmetrically installed on the front supporting rod and the rear supporting rod at the same time, and the seat plate can be clamped with the bar-shaped clamping seat through clamping, and the front supporting rod and the rear supporting rod are clamped with each other at the same time, so that the connection strength of the bench is improved, and the bearing strength is improved.

The working principle of the invention is as follows: when the seat 4 is installed, the stirring part 731 of the rotating arm can be stirred outwards, the inner end of the rotating arm 73 drives the hinged sliding block clamping end 743 to retract into the box-shaped main body 70 from the outside of the window, so that the sliding block 74 does not obstruct the installation of the seat 4, the side edges of the seat 4 are respectively inserted into the first horizontal sliding grooves 61 with the specific height of the longitudinal bracket 1 and pushed inwards in the state, until the sliding block clamping end 743 is just aligned with the clamping hole 62, the stirring part 731 is released, and the sliding block clamping end 743 extends out from the window 76 and is clamped into the clamping hole 62 under the action of the compression spring 73, thereby realizing the stable connection of the seat 4 and the strip-shaped clamping plate 6 on the front supporting rod 11, positioning the seat 4 and avoiding the front and rear sliding of the seat 4 in the use process; because the slider clamping end 43 is wedge-shaped, when the seat is installed, the poking part 731 of the rotating arm is not poked, and the slider clamping end 743 can be retracted into the retraction box-type main body 70 only by pressing the side wall of the first horizontal sliding groove 61 against the slider clamping end 743 until the slider clamping end 743 reaches the clamping hole 62, and the slider clamping end 743 is released and clamped into the clamping hole 62 because the slider clamping end 743 is not pressed outside.

When the seat 4 is detached, the poking part 731 of the rotating arm is poked outwards again, so that the sliding block clamping end 743 is retracted into the box-type main body 70 from the outside of the window 76, the sliding block clamping end 743 does not obstruct the installation of the seat, and the seat can be easily taken out from the first horizontal sliding groove 61 after the state is maintained. The pedal 5 is mounted in the same manner as the seat plate 4.

In the actual use process, according to the height of a user, the first horizontal sliding groove 61 with proper height can be selected, the seat 4 with the side-pulling connecting piece 7 is installed in the first horizontal sliding groove 61, the installation of the seat 4 is completed, and along with the change of the height of the user, the installation height of the seat can be correspondingly adjusted, so that the use range and the use time limit of the bench are greatly enlarged.

The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

It will be understood that equivalents and modifications will occur to those skilled in the art in light of the present teachings and concepts, and all such modifications and substitutions are intended to be included within the scope of the present invention as defined in the accompanying claims.

Claims

1. The bench is characterized by comprising two longitudinal brackets (1) which are symmetrically arranged left and right, a connecting cross rod (2) which is connected with the two longitudinal brackets (1), a backrest (3) which is connected with the upper ends of the two longitudinal brackets, and a seat plate (4) and a pedal (5) which are respectively clamped with the two longitudinal brackets (1);

The opposite surfaces of the two longitudinal brackets (1) are provided with connecting parts (6), the connecting parts (6) are provided with a plurality of first horizontal sliding grooves (61) along the vertical direction, and the inner side walls of the first horizontal sliding grooves (61) are provided with clamping holes (62); the two side edges of the seat plate (4) and the pedal (5) are respectively clamped with different first horizontal sliding grooves (61) through side-shifting connecting pieces (7);

The side pulling type connecting piece (7) comprises a box type main body (70) formed by clamping an upper shell (71) and a lower shell (72), a horizontal rotating arm (73) with one end hinged to the inner cavity of the box type main body (70), and a sliding block (74) hinged to the horizontal rotating arm (73), wherein a plurality of positioning through holes (77) for being in threaded connection with the bottom side of a seat (4) or a pedal (5) are formed in the box type main body (70);

The sliding block (74) comprises a sliding main body (741) and a connecting column (742) which extends downwards from the bottom of the sliding main body and is hinged with the horizontal rotating arm (73), and the sliding main body (741) vertically extends to the outside of the plane of the outer side surface of the box-shaped main body (70) to form a clamping end (743); a window (76) for the sliding block clamping end (743) to enter and exit is arranged on the outer side surface of the box-shaped main body (70);

The middle part of the horizontal rotating arm (73) is pivoted with a connecting shaft vertically arranged in the box-shaped main body (70), the outer end of the rotating arm (73) extends out of the box-shaped main body (70) to form a poking part (731), a connecting hole (732) for inserting a connecting column (742) of the sliding block (74) is formed in the inner end of the rotating arm (73), and the inner end of the rotating arm (73) is elastically connected with the inner wall of the box-shaped main body (70) through a connecting torsion spring (75);

the side edge of the seat plate (4) or the pedal (5) of the side shifting type connecting piece (7) is in sliding connection with the first horizontal sliding groove (61) of the longitudinal bracket (1), and the clamping end (743) of the sliding block (74) keeps extending out of the window (76) under the action of the torsion spring and is clamped with the clamping hole (62) of the first horizontal sliding groove (61); a poking part (731) poking the rotating arm (73) horizontally outwards, wherein the inner end of the rotating arm (73) drives the sliding block clamping end (473) to withdraw from the window (76) of the box-shaped main body (6) and retract into the box-shaped main body (70);

The upper shell (71) comprises a fixed plate (710) which is horizontally arranged and a sliding sleeve (713) which is formed by the middle part of the fixed plate (710) and protrudes upwards and is provided with left and right openings, the sliding main body (741) is positioned in the sliding sleeve (713) and is in sliding fit with the inner wall of the sliding sleeve (713), a first sliding groove (7131) which extends outwards is formed in the bottom wall of the sliding sleeve (713) along the movement track of the sliding main body (741), and the first sliding groove (7131) is communicated with the inner cavity of the sliding sleeve (713) and the inner cavity of the box-shaped main body (70); the left side and the right side of the seat plate (4) and the pedal (5) are respectively provided with a first clamping groove (41) for clamping the sliding sleeve (713); the sliding block clamping end (743) is in a wedge-shaped arrangement;

The top surface of the upper shell (71) extends upwards along the outer side to form a clamping plate (781), the clamping plate and the fixing plate (710) are surrounded to form a second clamping groove (78) for clamping the side edge of the seat plate (4) or the pedal (5), and the clamping plate (781) is L-shaped or concave;

One end of a torsion spring (75) is inserted into the inner end of the rotary arm (73) and penetrates through a connecting column (742) of the sliding block, the other end of the torsion spring (75) abuts against the inner wall of the lower shell (72), a positioning column (712) is arranged on the upper shell (71) or the lower shell (72) corresponding to the torsion spring (75), and the positioning column (712) is inserted into a central hole of the torsion spring (75);

The edge of the lower shell (72) is provided with a lug (723) for blocking the tail end of the first chute (7131), and the lug (723) is clamped with the first chute (7131).

2. The bench according to claim 1, characterized in that a positioning through hole (77) is provided coaxially with the connecting shaft, and that the positioning through hole (77) communicates with the connecting shaft cavity; a positioning through hole penetrates through the positioning column (712) and is coaxially arranged with the positioning column (712).

3. A bench according to claim 2, characterized in that the connecting portion (6) is integrally formed with the longitudinal support (1); or the connecting part is a strip-shaped clamping seat (60) which is matched with the longitudinal bracket in a clamping way, a plurality of connecting holes (64) which are used for being in threaded connection with the longitudinal bracket are uniformly distributed on the clamping seat (60), and the strip-shaped clamping seat (60) is made of wear-resistant plastic or metal.

4. A bench according to claim 3, characterized in that the sides of the box-shaped body (70) extend downwards or upwards to form a slide rail (79), the two ends of the slide rail (79) are open or the rear end extends vertically to form a slide terminal (791), the bottom or top side of the first horizontal slide groove (61) extends upwards or downwards to form a bar-shaped protrusion (65), a second horizontal slide groove (63) is formed between the inner side of the first horizontal slide groove (61) and the bar-shaped protrusion (65), and the second horizontal slide groove (63) is in sliding connection with the slide rail (79).

5. The bench according to claim 4, characterized in that the rear end of the bar-shaped protrusion (65) does not extend to the rear side of the bar-shaped holder (60), the distance between the rear end of the bar-shaped protrusion (65) and the rear side of the bar-shaped holder (60) is not smaller than the width of the sliding terminal (791) of the slide rail (79) of the side-pulling type connecting member (7), and the rear end of the bar-shaped protrusion (65) is provided with an arc transition.

6. The bench according to claim 5, characterized in that the longitudinal support (1) is of a herringbone structure formed by inserting a front support rod (11) and a rear support rod (12), a special-shaped insertion hole (13) is formed in a concave manner at the position, close to the inner side surface, of the front side surface of the front support rod, the special-shaped insertion hole (13) extends to the inner side surface of the front support rod, the special-shaped insertion hole is polygonal, and an inserting part (14) complementary to the special-shaped insertion hole in shape is arranged at the top end of the rear support rod (12); the inserting part (14) of the rear supporting rod (12) is in threaded connection with the inner side wall of the special-shaped inserting hole (13) of the longitudinal bracket (1).

7. The bench according to claim 6, characterized in that the cross section of the shaped insertion hole is a parallel hexagon with one side parallel to the side of the longitudinal bracket (1), and the bottom surface of the shaped insertion hole (13) protrudes into the hole to form at least one limit part (15).