CN215776383U - Front chest bracket - Google Patents

Abstract

The utility model relates to a forebreast bracket which comprises a vertical telescopic rod, a transverse forebreast support part arranged at the top of the vertical telescopic rod and a fixing structure arranged at the bottom of the vertical telescopic rod, wherein the vertical telescopic rod comprises an upper rod and a lower rod which are sleeved with each other and can move axially relative to each other, an anti-rotation structure for preventing the upper rod and the lower rod from rotating relatively in the circumferential direction is arranged between the upper rod and the lower rod, an adjusting and locking structure for adjusting the position of the upper rod and fixing the upper rod and the lower rod to each other is arranged between the upper rod and the lower rod, and an anti-disengaging structure for preventing the upper rod and the lower rod from disengaging is arranged between the upper rod and the lower rod.

Description

Front chest bracket

Technical Field

The utility model relates to a prothorax bracket.

Background

When a child lies on a desk during reading and writing, humpback, myopia and the like are easily caused.

Therefore, a front chest bracket which can prevent children from easily lying on a desk when reading and writing needs to be designed.

Disclosure of Invention

The utility model aims to provide a prothorax bracket.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a forebreast bracket comprises a vertical telescopic rod, a transverse forebreast support part arranged at the top of the vertical telescopic rod and a fixing structure arranged at the bottom of the vertical telescopic rod;

the vertical telescopic rod comprises an upper rod and a lower rod which are sleeved with each other and can move axially relative to each other, an anti-rotation structure for preventing the upper rod and the lower rod from rotating relatively in the circumferential direction is arranged between the upper rod and the lower rod, an adjusting and locking structure for adjusting the position of the upper rod and fixing the upper rod and the lower rod to each other is arranged between the upper rod and the lower rod, and an anti-disengaging structure for preventing the upper rod and the lower rod from disengaging is arranged between the upper rod and the lower rod;

the transverse forebreast support part is integrally or detachably fixedly arranged at the top end of the upper rod, or the transverse forebreast support part is movably arranged at the top end of the upper rod, and/or the transverse forebreast support part is provided with a flexible leaning part for leaning of the forebreast;

the fixing structure comprises an upper clamping plate fixed at the bottom of the vertical telescopic rod and a lower clamping plate capable of moving up and down relative to the upper clamping plate, the lower clamping plate is in non-rotatable sleeve joint with the vertical telescopic rod through a connecting part, and an adjusting and locking structure for adjusting the position of the lower clamping plate and fixing the lower clamping plate is arranged between the connecting part and the vertical telescopic rod/the upper clamping plate;

or the fixing structure comprises an upper clamping plate and a lower clamping plate, the lower clamping plate is fixed at the bottom of the vertical telescopic rod, the upper clamping plate is sleeved on the vertical telescopic rod and can move up and down relative to the upper clamping plate, an anti-rotation structure for preventing the upper clamping plate and the vertical telescopic rod from rotating relatively in the circumferential direction is arranged between the upper clamping plate and the vertical telescopic rod, and the vertical telescopic rod is provided with a pushing and locking structure for pushing the upper clamping plate to move towards the lower clamping plate so as to clamp the upper clamping plate on a base body;

or the fixing structure comprises an upper clamping plate and a lower clamping plate which can move up and down relative to the upper clamping plate, the lower clamping plate is sleeved with the vertical telescopic rod in a non-rotatable manner through a connecting part, an adjusting and locking structure is arranged between the connecting part and the vertical telescopic rod/the upper clamping plate, the upper clamping plate is sleeved on the connecting part in a non-rotatable manner, and the vertical telescopic rod is provided with a pushing and locking structure which pushes the upper clamping plate to move towards the lower clamping plate so as to clamp the upper clamping plate on a base body;

or, fixed knot constructs including fixing the punch holder of vertical telescopic link bottom and but axial activity with what vertical telescopic link was connected can be relative the punch holder reciprocates the lower plate, the lower plate with be equipped with between the vertical telescopic link and prevent the relative circumferential direction's of the two rotation-proof structure, the lower plate with be equipped with the promotion between the vertical telescopic link/the punch holder the lower plate to the punch holder activity is with the promotion locking structure of centre gripping on a base member.

Preferably, the adjusting and locking structure is a one-way adjusting and locking structure.

Preferably, the upper rod is sleeved in the lower rod, the one-way adjusting locking structure comprises a plurality of latch teeth arranged in a row on the upper rod and a retractable clamping part arranged on the lower rod, the latch teeth comprise a pushing surface positioned above and a blocking surface positioned below, the pushing surface is an inclined surface with an outer end inclined downwards, the blocking surface is a horizontal surface or an inclined surface with an outer end inclined downwards, and the clamping part can extend into the space between two adjacent latch teeth;

when the upper rod moves upwards relative to the lower rod, the clamping part is blocked by the blocking surface of the clamping tooth positioned above the clamping part to prevent the relative movement of the clamping part and the lower rod;

when the upper rod moves downwards relative to the lower rod, the clamping part is pushed by the pushing surface of the clamping tooth positioned below to exit between two adjacent clamping teeth, so that the upper rod moves downwards relative to the lower rod.

Preferably, the lower rod outer side wall is hinged with a key, one end of the key is provided with a pressing end, the other end of the key is connected with the clamping portion in an integrated or split mode, the lower rod side wall is provided with a through hole for enabling the clamping portion to penetrate into the lower rod, and an energy storage component is arranged between the lower rod and the key to enable the clamping portion to keep pressing to the acting force of the upper rod.

Preferably, the upper rod is sleeved in the lower rod, the adjusting and locking structure comprises a plurality of latch teeth arranged in a row on the upper rod and a retractable clamping part arranged on the lower rod, and the clamping part can extend into a space between two adjacent latch teeth.

Preferably, the rotation-preventing structure comprises a non-rotating hole arranged on the lower rod, and the part of the upper rod sleeved with the lower rod is a non-rotating part matched with the non-rotating hole; or the anti-rotation structure comprises a vertical sliding groove and a sliding part, wherein the vertical sliding groove is formed in one of the lower rod and the upper rod, the sliding part is formed in the other one of the lower rod and the upper rod, and the vertical sliding groove is in sliding fit with the sliding part.

Preferably, the anti-disengaging structure comprises a first blocking part arranged on the upper rod and a second blocking part arranged on the lower rod, and the first blocking part and the second blocking part block each other to prevent the upper rod and the lower rod from being disengaged from each other.

Preferably, the horizontal forethorax support part comprises a supporting framework, the edge of the flexible abutting part is integrally or detachably connected to the supporting framework, and a floating gap is reserved between the flexible abutting part and the flexible abutting part.

Preferably, horizontal prothorax holds in the palm portion includes support chassis, the flexible portion of leaning on is including setting up support chassis is last soft rubber spare.

Preferably, the edge of the flexible abutting part is in clamping fit with the supporting framework, or in adhesive fit with the supporting framework, or in hot-melt connection with the supporting framework, or is integrally formed by injection molding, or the edge of the flexible abutting part covers the supporting framework.

Preferably, horizontal prothorax support portion include with the integrative or the components of a whole that can function independently of upper boom is fixed respectively to the supporting part that the upper boom both sides extend, perhaps, horizontal prothorax support portion include with the supporting part that the upper boom is mobile or detachable connects, the supporting part is equipped with floatable's supporting framework, the flexibility supports the portion connection to lean on support framework is last.

Preferably, the supporting framework is provided with a hinge part in hinged fit with the supporting part and a floating part in floating fit with the supporting part, and an elastic component is arranged between the floating part and the supporting part.

Preferably, the upper plate is connected with the lower rod in an integrated or split manner, the connecting part is connected with the lower plate in an integrated or split manner, the adjusting and locking structure comprises a plurality of latch teeth arranged in a row of the connecting part and a telescopic clamping part arranged on the lower rod/the upper plate, and the clamping part can extend into the space between two adjacent latch teeth.

Preferably, lower pole/punch holder lateral wall sliding connection has a push-and-pull piece, card portion locates push-and-pull piece, lower pole/punch holder lateral wall is equipped with the messenger card portion penetrates inside perforation, lower pole/punch holder with it makes to be equipped with energy storage component to push-and-pull between the piece card portion keeps pressing to the effort of punch holder.

Preferably, an anti-falling structure for preventing the push-pull piece from falling off is arranged between the lower rod/the upper clamping plate and the push-pull piece.

Preferably, the latch on the connecting part comprises a pushing surface positioned above and a blocking surface positioned below, the pushing surface is an inclined surface with an outer end inclined downwards, the blocking surface is a horizontal plane or an inclined surface with an outer end inclined downwards, and the clamping part on the lower rod can extend into the space between two adjacent latches;

when the connecting part moves upwards relative to the lower rod, the clamping part is blocked by the blocking surface of the clamping tooth positioned above the clamping part to prevent the relative movement of the clamping part and the lower rod;

when the connecting part moves downwards relative to the lower rod, the clamping part is pushed by the pushing surface of the clamping tooth positioned below to exit between two adjacent clamping teeth, so that the upper rod moves downwards relative to the lower rod.

Preferably, the inner surface of the upper splint/lower splint is provided with a soft cushion.

Preferably, the upper clamping plate comprises a fixed plate and a movable plate which can move relative to the fixed plate, the pushing locking structure comprises a knob which is in threaded fit with the fixed plate, the lower end of the knob is rotatably connected with the movable plate, and the movable plate moves relative to the fixed plate by rotating the knob.

Preferably, the punch holder includes the fixed plate and with fixed plate sliding connection's fly leaf, promote locking structure include with the articulated complex of fixed plate is pulled and is detained, pull detain the lower extreme to one side protruding be equipped with fly leaf butt complex butt portion, through rotating pull detain the promotion the activity of fly leaf relative fixed plate.

Preferably, the upper clamping plate comprises a fixed plate and a movable plate which can move relative to the fixed plate, the pushing locking structure comprises a knob which is in threaded fit with the fixed plate, the lower end of the knob is rotatably connected with the movable plate, and the movable plate moves relative to the fixed plate by rotating the knob.

Preferably, the punch holder includes the fixed plate and with fixed plate sliding connection's fly leaf, promote locking structure include with the articulated complex of fixed plate is pulled and is detained, pull detain the lower extreme to one side protruding be equipped with fly leaf butt complex butt portion, through rotating pull detain the promotion the activity of fly leaf relative fixed plate.

Preferably, the upper clamping plate comprises a fixed plate and a movable plate which can move relative to the fixed plate, the pushing locking structure comprises a knob which is in threaded fit with the fixed plate, the lower end of the knob is rotatably connected with the movable plate, and the movable plate moves relative to the fixed plate by rotating the knob.

Preferably, the punch holder includes the fixed plate and with fixed plate sliding connection's fly leaf, promote locking structure include with the articulated complex of fixed plate is pulled and is detained, pull detain the lower extreme to one side protruding be equipped with fly leaf butt complex butt portion, through rotating pull detain the promotion the activity of fly leaf relative fixed plate.

Preferably, the upper plate is sleeved with the vertical telescopic rod, a rotating sleeve is arranged at the bottom of the vertical telescopic rod and is in threaded connection with the vertical telescopic rod, and the bottom of the rotating sleeve abuts against the upper plate.

Preferably, the lower clamping plate is connected with the vertical telescopic rod through a screw rod, and the screw rod penetrates through the lower clamping plate from the bottom of the lower clamping plate and is in threaded fit with the vertical telescopic rod.

Preferably, the screw rod is in threaded connection with the connecting portion of the lower clamping plate, and threads of the connecting portion of the lower clamping plate are opposite to threads of the vertical telescopic rod.

Preferably, the adjusting and locking structure comprises a screwing sleeve, and the upper rod and the lower rod are screwed tightly through the screwing sleeve.

Preferably, the top of the lower rod is provided with connecting pieces distributed at intervals, the screwing sleeve is screwed on the connecting pieces, the screwing sleeve is a screwing sleeve with the inner part being narrow at the top and wide at the bottom, or the connecting pieces are screwing sleeves with the upper part being thin and the lower part being thick, and the screwing sleeve is rotated to compress the connecting pieces to enable the connecting pieces to abut against the side walls of the upper rod.

Preferably, the adjusting and locking structure comprises a pull buckle, and the upper rod and the lower rod are in abutting fit through the pull buckle.

Preferably, the upper end of the upper rod is a bending structure which is bent forwards, and the front end of the bending structure is integrally or separately connected with the transverse forebreast support part.

Preferably, the upper rod is a hollow plastic rod body, and/or the lower rod is a hollow plastic rod body, and/or the upper clamping plate and/or the lower clamping plate is a plastic plate body.

Advantageous effects

After the technical scheme is adopted, the handle assembly is linked with the wheel assembly through the linkage mechanism, so that a user can link the wheel assembly through the handle at any time to steer in the using process, labor is saved, and the using performance is good.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is an exploded view of the structure shown in FIG. 1;

FIG. 3 is a schematic structural diagram of another embodiment of the present invention;

FIG. 4 is an enlarged view at A in FIG. 3;

FIG. 5 is an enlarged view at B in FIG. 3;

FIG. 6 is a schematic structural diagram of another embodiment of the present invention;

FIG. 7 is a schematic structural diagram of another embodiment of the present invention;

fig. 8 is a schematic structural view of another embodiment of the present invention.

Detailed Description

The following detailed description of the embodiments of the present invention is provided in conjunction with the accompanying drawings, so that how to implement the embodiments of the present invention by using technical means to solve the technical problems and achieve the technical effects can be fully understood and implemented.

Certain terms are used herein to refer to particular components, and it should be understood by those skilled in the art that the present specification and claims do not distinguish between components by virtue of differences in name, but rather by virtue of differences in function of components. It should be noted that, when an element is described as being "provided with" or "disposed on" another element, it may mean that the element is directly provided or disposed on the other element or intervening elements may be present, and may be a unitary structure or a split structure, unless otherwise specified. When an element is described as being "connected" to another element, it can be directly connected or connected through intervening elements, or it can be integrally connected or separately connected. When an element is referred to as being "on" another element, it does not mean that the element is necessarily on top of or above the other element, or in other locations. The terms "upper", "lower", "left", "right", "high", "low" and the like are used herein with reference to the normal state of the product in which it is placed, and are used for convenience of description only. The term "plurality" as used herein refers to two or more numbers. The terms "vertical," "horizontal," and the like as used herein refer to a substantially vertical or substantially horizontal condition within reasonable tolerances and are not necessarily exact.

Referring to fig. 1, the forebreast bracket of the utility model comprises a vertical telescopic rod, a transverse forebreast support part arranged at the top of the vertical telescopic rod and a fixing structure arranged at the bottom of the vertical telescopic rod;

the vertical telescopic rod comprises an upper rod 11 and a lower rod 12 which are sleeved with each other and can move axially relative to each other, an anti-rotation structure for preventing the upper rod and the lower rod from rotating relatively in the circumferential direction is arranged between the upper rod and the lower rod, an adjusting and locking structure for adjusting the position of the upper rod and fixing the upper rod and the lower rod to each other is arranged between the upper rod and the lower rod, and an anti-disengaging structure for preventing the upper rod and the lower rod from disengaging is arranged between the upper rod and the lower rod;

the transverse forebreast support part is fixedly arranged at the top end of the upper rod, or the transverse forebreast support part is movably arranged at the top end of the upper rod and is provided with a flexible leaning part 21 for leaning of the forebreast;

the fixing structure comprises an upper clamping plate 3 fixed at the bottom of the vertical telescopic rod and a lower clamping plate 4 capable of moving up and down relative to the upper clamping plate, the lower clamping plate is in non-rotatable sleeve joint with the vertical telescopic rod through a connecting part 41, and an adjusting and locking structure for adjusting the position of the lower clamping plate and fixing the lower clamping plate is arranged between the connecting part and the vertical telescopic rod/the upper clamping plate;

the upper rod is a hollow plastic rod body, the lower rod is a hollow plastic rod body, and the upper clamping plate and/or the lower clamping plate are plastic plate bodies.

During the use, desk edge is arranged in with this chest bracket to accessible punch holder and lower plate, and punch holder and lower plate are according to the thickness centre gripping desk of desk, then adjust suitable height through vertical telescopic link with horizontal chest support portion, the chest support by horizontal chest support portion can, can prevent children hunchback or myopia.

In order to prevent the desk from being scratched, the inner surfaces of the upper clamping plate and the lower clamping plate are provided with soft pads.

In fig. 1 and 2, the chest support further comprises a bottom plate 5, and the lower clamping plate is fixed on the bottom plate through a plugging or buckling structure, so that the chest support can be directly placed on a desk without being clamped by the upper clamping plate and the lower clamping plate.

In other embodiments, the fixing structure comprises an upper clamping plate and a lower clamping plate, the lower clamping plate is fixed at the bottom of the vertical telescopic rod, the upper clamping plate is sleeved on the vertical telescopic rod and can move up and down relative to the upper clamping plate, an anti-rotation structure for preventing the upper clamping plate and the vertical telescopic rod from rotating circumferentially relative to each other is arranged between the upper clamping plate and the vertical telescopic rod, and the vertical telescopic rod is provided with a pushing locking structure for pushing the upper clamping plate to move towards the lower clamping plate so as to clamp the upper clamping plate on a base body;

in other embodiments, the fixing structure comprises an upper clamping plate and a lower clamping plate which can move up and down relative to the upper clamping plate, the lower clamping plate is sleeved with the vertical telescopic rod in a non-rotatable manner through a connecting part, an adjusting and locking structure is arranged between the connecting part and the vertical telescopic rod/the upper clamping plate, the upper clamping plate is sleeved on the connecting part in a non-rotatable manner, and the vertical telescopic rod is provided with a pushing and locking structure which pushes the upper clamping plate to move towards the lower clamping plate so as to clamp the upper clamping plate on a base body;

in other embodiments, the fixing structure comprises an upper clamp plate fixed at the bottom of the vertical telescopic rod and a lower clamp plate which can axially move and is connected with the vertical telescopic rod and can move up and down relative to the upper clamp plate, an anti-rotation structure for preventing the upper clamp plate and the vertical telescopic rod from rotating in the circumferential direction relative to each other is arranged between the lower clamp plate and the vertical telescopic rod/the upper clamp plate, and a pushing locking structure for pushing the lower clamp plate to move towards the upper clamp plate and clamp the upper clamp plate on a base body is arranged between the lower clamp plate and the vertical telescopic rod/the upper clamp plate.

Referring to fig. 3 and 4, the adjusting and locking structure on the vertical telescopic rod is a one-way adjusting and locking structure.

In fig. 3, the upper rod is sleeved in the lower rod, the unidirectional adjusting locking structure comprises a plurality of latch teeth 61 arranged in a row on the upper rod and a retractable latch part 62 arranged on the lower rod, the latch teeth comprise a pushing surface 611 positioned above and a blocking surface 612 positioned below, the pushing surface is an inclined surface with an outer end inclined downwards, the blocking surface is a horizontal surface or an inclined surface with an outer end inclined downwards, and the latch part can extend between two adjacent latch teeth;

when the upper rod moves upwards relative to the lower rod, the clamping part is blocked by the blocking surface of the clamping tooth positioned above the clamping part to prevent the relative movement of the clamping part and the lower rod;

when the upper rod moves downwards relative to the lower rod, the clamping part is pushed by the pushing surface of the clamping tooth positioned below to exit between two adjacent clamping teeth, so that the upper rod moves downwards relative to the lower rod.

The lower beam lateral wall is articulated to have button 63 through the articulated shaft, button one end forms presses the end, the other end with integrative or split type connection of card portion, the lower beam lateral wall is equipped with the messenger card portion penetrates the inside perforation of lower beam, the lower beam with be equipped with energy storage component such as torsional spring, linear spring, rubber band, magnet between the button and make card portion keeps pressing to the effort of upper boom.

Referring to fig. 2, the rotation preventing structure includes a vertical sliding groove 13 provided in one of the lower and upper bars and a sliding portion 14 provided in the other, the vertical sliding groove and the sliding portion being slidably engaged.

In other embodiments, the rotation-preventing structure comprises a non-rotation hole, such as a triangular hole, a quadrilateral hole or an elliptical or D-shaped hole, provided in the lower rod, and the part of the upper rod sleeved with the lower rod is a non-rotation part matched with the non-rotation hole.

Referring to fig. 2, the anti-separation structure includes a first blocking portion 15 provided at the upper pole and a second blocking portion 16 provided at the lower pole, and the upper pole and the lower pole are prevented from being separated from each other by the mutual blocking of the first blocking portion and the second blocking portion.

Referring to fig. 1 and 2, the transverse anterior chest support portion includes a support framework 22, the edge of the flexible abutting portion is integrally or separately connected to the support framework, and a floating gap is formed between the flexible abutting portion and the flexible abutting portion. Specifically, the flexible abutting part is a soft rubber part, such as a silicon rubber part, the edge of the flexible abutting part is in clamping fit with the supporting framework, in adhesive fit with the supporting framework, in hot melting connection with the supporting framework, in an integrally formed injection molding manner, or the edge of the flexible abutting part is coated on the supporting framework, and the supporting framework and the two ends of the upper rod are integrally or separately fixed and extend towards the two sides of the upper rod respectively.

Referring to fig. 3 to 6, the transverse forebreast support part comprises a support part 23 movably or detachably connected with the upper rod, the support part is provided with a floatable support framework, and the flexible abutting part is connected to the support framework.

In fig. 6, the supporting framework has a hinge portion 221 hinged to the supporting portion and a floating portion 222 forming a floating fit with the supporting portion, and an elastic member 223 is disposed between the floating portion and the supporting portion, wherein the hinge portion may be a spherical hinge or an axial hinge.

Referring to fig. 3, the upper clamp plate is integrally or separately connected to the lower rod, and the connecting portion is integrally or separately connected to the lower clamp plate.

The adjusting and locking structure between the connecting part and the vertical telescopic rod comprises a plurality of latch teeth 61 arranged in a row of the connecting part and a telescopic clamping part 62 arranged on the lower rod/the upper clamping plate, and the clamping part can extend into the space between two adjacent latch teeth.

Lower pole/punch holder lateral wall sliding connection has the push-and-pull piece 64, card portion locates the push-and-pull piece, lower pole/punch holder lateral wall is equipped with the messenger card portion penetrates inside perforation, lower pole/punch holder with it makes to be equipped with energy storage component to push-and-pull between the piece card portion keeps pressing to the effort of upper boom, lower pole/punch holder with it prevents to push-and-pull to be equipped with between the piece anticreep joint portion that the piece deviates from.

The latch on the connecting part comprises a pushing surface 611 positioned above and a blocking surface 612 positioned below, the pushing surface is an inclined surface with an outer end inclined downwards, the blocking surface is a horizontal surface or an inclined surface with an outer end inclined downwards, and the latch on the lower rod can extend into the space between two adjacent latches;

when the connecting part moves upwards relative to the lower rod, the clamping part is blocked by the blocking surface of the clamping tooth positioned above the clamping part to prevent the relative movement of the clamping part and the lower rod;

when the connecting part moves downwards relative to the lower rod, the clamping part is pushed by the pushing surface of the clamping tooth positioned below to exit between two adjacent clamping teeth, so that the upper rod moves downwards relative to the lower rod.

In fig. 3, the upper clamping plate comprises a fixed plate 32 and a movable plate 33 which is movable relative to the fixed plate, the push locking structure comprises a knob 71 which is in threaded fit with the fixed plate, the lower end of the knob is rotatably connected with the movable plate, and the movable plate is movable relative to the fixed plate by rotating the knob.

In fig. 7, the movable plate is slidably connected to the fixed plate, the pushing and locking structure includes a trigger 72 pivotally connected to the fixed plate, a pushing portion 73 is formed at a lower end of the trigger and extends to one side to abut against the movable plate, and the trigger is rotated to push the movable plate to move relative to the fixed plate.

In fig. 1 and 2, the upper clamp plate is sleeved with the vertical telescopic rod, a rotary sleeve 74 is arranged at the bottom of the vertical telescopic rod, the rotary sleeve is in threaded connection with the vertical telescopic rod, and the bottom of the rotary sleeve is supported above the upper clamp plate.

Referring to fig. 8, the lower splint is connected to the vertical telescopic rod through a screw member 75, and the screw member passes through the lower splint from the bottom of the lower splint and is in threaded engagement with the vertical telescopic rod. Preferably, the screw rod is in threaded connection with the connecting portion of the lower clamping plate, and threads of the connecting portion of the lower clamping plate are opposite to threads of the vertical telescopic rod.

In fig. 1 and 2, the adjustment and locking structure includes a tightening sleeve 76, and the upper and lower rods are screwed together by the tightening sleeve. Preferably, the top of the lower rod is provided with connecting pieces distributed at intervals, the screwing sleeve is screwed on the connecting pieces, the screwing sleeve is a screwing sleeve with the inner part being narrow at the top and wide at the bottom, or the connecting pieces are screwing sleeves with the upper part being thin and the lower part being thick, and the screwing sleeve is rotated to compress the connecting pieces to enable the connecting pieces to abut against the side walls of the upper rod. In other embodiments, the adjustment locking structure comprises a trigger, and the upper rod and the lower rod are in abutting fit through the trigger.

Referring to fig. 1 and 3, the upper end of the upper rod is a bent structure bent forwards, and the front end of the bent structure is integrally or separately connected with the transverse forebreast support part.

In other embodiments, the upper plate and the anti-rotation structure between the vertical telescopic rods, and the lower plate and the anti-rotation structure and the anti-disengagement structure between the vertical telescopic rods can be respectively communicated with the anti-rotation structure and the anti-disengagement structure between the upper rod and the lower rod, which is not described herein in detail.

In other embodiments, the latch may be replaced with a slot and hole configuration.

The present invention is not limited to the above examples, and the above description does not limit the present invention, and variations, modifications, additions and substitutions which may be made by a person of ordinary skill in the art within the spirit of the present invention also belong to the scope of the present invention.

Claims (22)

1. A forebreast bracket is characterized by comprising a vertical telescopic rod, a transverse forebreast supporting part arranged at the top of the vertical telescopic rod and a fixing structure arranged at the bottom of the vertical telescopic rod;

the vertical telescopic rod comprises an upper rod and a lower rod which are sleeved with each other and can move axially relative to each other, and an adjusting and locking structure for adjusting the position of the upper rod and fixing the upper rod and the lower rod to each other is arranged between the upper rod and the lower rod;

the transverse forebreast support part is integrally or separately arranged at the top end of the upper rod;

the fixing structure comprises an upper clamping plate and a lower clamping plate, wherein,

the upper clamping plate is fixed at the bottom of the vertical telescopic rod, the lower clamping plate is in non-rotatable sleeve joint with the vertical telescopic rod through a connecting part, the lower clamping plate can move up and down relative to the upper clamping plate, and an adjusting and locking structure for adjusting the position of the lower clamping plate and fixing the lower clamping plate is arranged between the connecting part and the vertical telescopic rod/the upper clamping plate; alternatively, the first and second electrodes may be,

the lower clamping plate is fixed at the bottom of the vertical telescopic rod, the upper clamping plate is sleeved on the vertical telescopic rod and can move up and down relative to the upper clamping plate, and the vertical telescopic rod is provided with a pushing locking structure which pushes the upper clamping plate to move towards the lower clamping plate so as to clamp the upper clamping plate on a base body; or the lower clamping plate is sleeved with the vertical telescopic rod through a connecting part, an adjusting and locking structure is arranged between the connecting part and the vertical telescopic rod/the upper clamping plate, the upper clamping plate is sleeved on the connecting part, and the vertical telescopic rod is provided with a pushing and locking structure for pushing the upper clamping plate to move towards the lower clamping plate so as to be clamped on a base body; alternatively, the first and second electrodes may be,

the upper plate is fixed in vertical telescopic link bottom, but the lower plate axial activity with vertical telescopic link is connected and is made the lower plate can be relative the upper plate reciprocates, be equipped with between lower plate and vertical telescopic link/the upper plate and promote the lower plate to the upper plate activity is with the promotion locking structure of centre gripping on a base member.

2. The forebreast bracket of claim 1 wherein said transverse forebreast support is provided with a flexible abutment for the forebreast to lean against, said transverse forebreast support comprising a support frame to which said flexible abutment is integrally or separately attached at its edge, said flexible abutment and said flexible abutment having a floating gap therebetween; alternatively, the first and second electrodes may be,

the horizontal chest support part comprises a support part which is integrated with the upper rod or is fixed in a split mode and extends towards the two sides of the upper rod respectively, or the horizontal chest support part comprises a support part which is movable or detachably connected with the upper rod, a floatable support framework is arranged on the support part, and the flexible support part is connected to the support framework.

3. The forebreast bracket of claim 2, wherein the flexible abutment edge is snap-fit or adhesive-fit or heat-fused to the support armature, or integrally formed by injection molding, or the flexible abutment edge encases the support armature.

4. The forebreast bracket of claim 2 wherein said support armature has a hinge portion in hinged engagement with said support portion and a floating portion in floating engagement with said support portion, said floating portion having a resilient member disposed between said floating portion and said support portion.

5. The forepart bracket of claim 2, wherein the upper end of the upper bar is a curved structure that is curved forward, and the front end of the curved structure is integrally or separately connected with the lateral forepart holder.

6. The forebreast bracket of claim 2, wherein the upper bar is a hollow plastic bar and/or the lower bar is a hollow plastic bar and/or the upper and/or lower splints are plastic plates.

7. The forebreast bracket of claim 1, wherein said transverse forebreast support is provided with a flexible abutment for the forebreast to lean against, said transverse forebreast support including a support armature, said flexible abutment including a soft rubber provided on said support armature.

8. The forebreast bracket of any one of claims 1 to 7, wherein the upper clamping plate is integrally or separately connected to the lower bar, the connecting part is integrally or separately connected to the lower clamping plate, and the adjustment locking structure comprises a plurality of latches arranged in a row at the connecting part and a retractable catch part arranged at the lower/upper clamping plate, the catch part being extendable between two adjacent latches.

9. The forebreast bracket of claim 8, wherein a push-pull member is slidably connected to the outer side wall of the lower/upper clamp plate, the clip portion is disposed on the push-pull member, the side wall of the lower/upper clamp plate is provided with a through hole for the clip portion to penetrate into, an energy storage member is disposed between the lower/upper clamp plate and the push-pull member to maintain the force of the clip portion pressing against the upper rod, and a separation preventing member is disposed between the lower/upper clamp plate and the push-pull member to prevent the push-pull member from separating.

10. The forebreast bracket of claim 8 wherein said latch on said connecting portion includes an upper pushing surface and a lower blocking surface, said pushing surface is a downward sloping surface, said blocking surface is a horizontal surface or a downward sloping surface, said latch on said lower rod can extend between two adjacent latches;

when the connecting part moves upwards relative to the lower rod, the clamping part is blocked by the blocking surface of the clamping tooth positioned above the clamping part to prevent the relative movement of the clamping part and the lower rod; when the connecting part moves downwards relative to the lower rod, the clamping part is pushed by the pushing surface of the clamping tooth positioned below to exit between two adjacent clamping teeth, so that the upper rod moves downwards relative to the lower rod.

11. The forebreast bracket of claim 8 wherein said upper/lower splints are provided with a cushion on the inner surface.

12. The forebreast bracket of claim 8, wherein said upper clamp plate includes a fixed plate and a movable plate movable relative to said fixed plate, said push lock structure includes a knob threadably engaged with said fixed plate, said knob having a lower end rotatably connected to said movable plate, said movable plate being movable relative to said fixed plate by rotation of said knob.

13. The forebreast bracket of claim 8, wherein the upper clamping plate comprises a fixed plate and a movable plate slidably connected to the fixed plate, the pushing and locking structure comprises a trigger pivotally engaged with the fixed plate, an abutting portion engaged with the movable plate is convexly provided at a lower end of the trigger toward one side, and the movable plate is pushed to move relative to the fixed plate by rotating the trigger.

14. The chest cradle of claim 1 wherein said upper bar is nested within said lower bar, said adjustment and locking structure comprising a plurality of latches disposed in an array on said upper bar and a retractable catch disposed on said lower bar, said catch being extendable between adjacent latches; alternatively, the first and second electrodes may be,

the adjusting and locking structure comprises a screwing sleeve, and the upper rod and the lower rod are screwed tightly through the screwing sleeve; alternatively, the first and second electrodes may be,

the adjusting and locking structure comprises a pull buckle, and the upper rod and the lower rod are in abutting fit through the pull buckle.

15. The forebreast bracket of claim 14, wherein the top of the lower bar is provided with spaced apart connection pieces, the tightening sleeve is screwed on the connection pieces, the tightening sleeve is a tightening sleeve with a narrow top and a wide bottom, or the connection pieces are tightening sleeves with a thin top and a thick bottom, and the tightening sleeve is rotated to compress the connection pieces to abut against the side walls of the upper bar.

16. The forebreast bracket of any one of claims 1 to 7 and 9 to 15 wherein the adjustment locking arrangement is a one-way adjustment locking arrangement.

17. The forebreast bracket of claim 16 wherein said upper bar is sleeved within said lower bar, said one-way adjustment locking structure comprises a plurality of latch teeth arranged in a row on said upper bar and a retractable catch portion arranged on said lower bar, said latch teeth comprise a pushing surface on the upper side and a blocking surface on the lower side, said pushing surface is a slope surface with an outer end inclined downward, said blocking surface is a horizontal surface or a slope surface with an outer end inclined downward, and said catch portion can extend between two adjacent latch teeth;

when the upper rod moves upwards relative to the lower rod, the clamping part is blocked by the blocking surface of the clamping tooth positioned above the clamping part to prevent the relative movement of the clamping part and the lower rod; when the upper rod moves downwards relative to the lower rod, the clamping part is pushed by the pushing surface of the clamping tooth positioned below to exit between two adjacent clamping teeth, so that the upper rod moves downwards relative to the lower rod.

18. The forebreast bracket of claim 17, wherein the outer side wall of the lower bar is hinged with a button, one end of the button forms a pressing end, the other end of the button is connected with the clamping part in an integrated or split manner, the side wall of the lower bar is provided with a through hole for the clamping part to penetrate into the lower bar, and an energy storage component is arranged between the lower bar and the button to keep the clamping part pressed against the upper bar.

19. The forebreast bracket of claim 16 wherein an anti-rotation structure is provided between said upper and lower rods for preventing relative circumferential rotation therebetween, said anti-rotation structure comprising a non-rotation hole provided in said lower rod, said upper rod being sleeved with said lower rod by a non-rotation portion engaged with said non-rotation hole; alternatively, the first and second electrodes may be,

the anti-rotation structure comprises a vertical sliding groove and a sliding part, wherein the vertical sliding groove is formed in one of the lower rod and the upper rod, the sliding part is formed in the other one of the lower rod and the upper rod, and the vertical sliding groove is in sliding fit with the sliding part; alternatively, the first and second electrodes may be,

be equipped with the anti-disengaging structure who prevents the two and break away from between upper boom and the lower beam, anti-disengaging structure is including establishing the first fender portion of upper boom keeps off the portion with the setting is in the second of lower beam keeps off the portion, through the mutual stopping of first fender portion and second fender portion is in order to prevent upper boom and lower beam break away from each other.

20. The forebreast bracket of claim 16, wherein said upper clamp plate includes a fixed plate and a movable plate movable relative to said fixed plate, said push-lock mechanism includes a knob threadably engaged with said fixed plate, said knob having a lower end rotatably connected to said movable plate, said movable plate being movable relative to said fixed plate by rotation of said knob; alternatively, the first and second electrodes may be,

the upper clamping plate comprises a fixed plate and a movable plate movably connected with the fixed plate, the pushing and locking structure comprises a pull buckle hinged and matched with the fixed plate, the lower end of the pull buckle is convexly provided with a butting part butted and matched with the movable plate towards one side, and the pull buckle is rotated to push the movable plate to move relative to the fixed plate; alternatively, the first and second electrodes may be,

the upper clamping plate is sleeved with the vertical telescopic rod, a rotating sleeve is arranged at the bottom of the vertical telescopic rod and is in threaded connection with the vertical telescopic rod, and the bottom of the rotating sleeve abuts against the upper clamping plate; alternatively, the first and second electrodes may be,

the lower clamping plate is connected with the vertical telescopic rod through a screw rod, and the screw rod penetrates through the lower clamping plate from the bottom of the lower clamping plate and is in threaded fit with the vertical telescopic rod; alternatively, the first and second electrodes may be,

the screw rod piece is respectively in threaded connection with the vertical telescopic rod and the connecting portion of the lower clamping plate, and the threads of the connecting portion of the lower clamping plate are opposite to the threads of the vertical telescopic rod.

21. The forebreast bracket of any one of claims 1 to 7, 9 to 15 and 17 to 18, wherein an anti-rotation structure is arranged between the upper rod and the lower rod and prevents the upper rod and the lower rod from rotating in the circumferential direction, the anti-rotation structure comprises a non-rotation hole arranged on the lower rod, and the part of the upper rod, which is sleeved with the lower rod, is a non-rotation part matched with the non-rotation hole; alternatively, the first and second electrodes may be,

the anti-rotation structure comprises a vertical sliding groove and a sliding part, wherein the vertical sliding groove is formed in one of the lower rod and the upper rod, the sliding part is formed in the other one of the lower rod and the upper rod, and the vertical sliding groove is in sliding fit with the sliding part; alternatively, the first and second electrodes may be,

be equipped with the anti-disengaging structure who prevents the two and break away from between upper boom and the lower beam, anti-disengaging structure is including establishing the first fender portion of upper boom keeps off the portion with the setting is in the second of lower beam keeps off the portion, through the mutual stopping of first fender portion and second fender portion is in order to prevent upper boom and lower beam break away from each other.

22. The forebreast bracket of any one of claims 1 to 7, 9 to 15 and 17 to 18, wherein the upper clamping plate comprises a fixed plate and a movable plate movable relative to the fixed plate, the push-lock structure comprises a knob threadedly engaged with the fixed plate, the lower end of the knob being rotatably connected to the movable plate, and the movable plate is movable relative to the fixed plate by rotating the knob; alternatively, the first and second electrodes may be,

the upper clamping plate comprises a fixed plate and a movable plate movably connected with the fixed plate, the pushing and locking structure comprises a pull buckle hinged and matched with the fixed plate, the lower end of the pull buckle is convexly provided with a butting part butted and matched with the movable plate towards one side, and the pull buckle is rotated to push the movable plate to move relative to the fixed plate; alternatively, the first and second electrodes may be,

the upper clamping plate is sleeved with the vertical telescopic rod, a rotating sleeve is arranged at the bottom of the vertical telescopic rod and is in threaded connection with the vertical telescopic rod, and the bottom of the rotating sleeve abuts against the upper clamping plate; alternatively, the first and second electrodes may be,

the lower clamping plate is connected with the vertical telescopic rod through a screw rod, and the screw rod penetrates through the lower clamping plate from the bottom of the lower clamping plate and is in threaded fit with the vertical telescopic rod; alternatively, the first and second electrodes may be,

the screw rod piece is respectively in threaded connection with the vertical telescopic rod and the connecting portion of the lower clamping plate, and the threads of the connecting portion of the lower clamping plate are opposite to the threads of the vertical telescopic rod.

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