CN220801248U - Three-fork structure with folding rear fixing device - Google Patents

Abstract

The utility model discloses a three-fork structure with a fixing device after folding, in the aspect of a folding mechanism, a second folding piece and a third folding piece are rotationally folded through a connecting lug, a first folding piece can simultaneously clamp the second folding piece and the third folding piece through a U-shaped seat and also can rotate relative to the third folding piece, so that the three folding pieces are stable when unfolded, can shrink to the minimum volume when folded, and in the aspect of a fixing and anti-disengaging mechanism after folding, a clamping hook is arranged on the pulling buckle through the cooperation of the pulling buckle and the U-shaped piece, a bayonet is arranged on the U-shaped piece, and the clamping hook can enter a U-shaped piece through the bayonet when the first folding piece and the second folding piece are folded towards the direction of the third folding piece at the same time, thereby forming a triangular fixing mechanism, and preventing the second folding piece from slipping from the outer side.

Description

Three-fork structure with folding rear fixing device

Technical Field

The utility model relates to the technical field of folding and fixing after folding of a three-fork structure in a medical instrument, in particular to a three-fork structure with a fixing device after folding.

Background

At present, the ratio of packaging cost, storage cost and transport cost of foreign trade type medical equipment is increasing year by year in terms of cost ratio, in order to solve the problem, in the structural design of medical equipment, various cross structures or three-fork structures are usually designed into foldable forms, for example, a wheelchair, the three-fork structures of a wheel support and an armrest support are not folded, the finished packaging volume of each wheelchair can be up to 1 cubic meter, but if the three-fork structure of the main body support is made into a folded structure, the final volume can be reduced to one third or even less, the packaging cost, the storage cost and the transport cost are greatly saved, a link is also involved in the structural design of the folded structure, the conventional fixed mode after folding adopts a binding belt to fix the binding belt, and the binding belt is bound together around a second folding piece, so as to achieve the fixed effect, and the structural design has the defects that: the operation steps are relatively complicated, and the binding belt is easy to damage and lose, so that the lasting use is influenced.

Disclosure of utility model

In order to overcome the defects in the prior art, the utility model aims to provide a three-fork structure with a folded fixing device so as to solve the technical problems in the prior art.

In order to solve the technical problems, the utility model adopts the following technical scheme:

The utility model provides a three fork structures of folding back fixing device in area, includes first folded piece, second folded piece and the third folded piece that constitutes three fork structure each other, the second folded piece is realized folding rotation through the engaging lug of one side with the third folded piece and is connected, first folded piece can rotate for the third folded piece, when three folded piece all expands, first folded piece can simultaneously butt second folded piece and third folded piece and limit second folded piece and third folded piece simultaneously to constitute firm three fork structure, one side rotatable of second folded piece is equipped with pulls the knot, one side of first folded piece is equipped with U-shaped piece, pulls the inboard of knot and is equipped with the pothook, one side of U-shaped piece is equipped with the bayonet socket, rotates when first folded piece and second folded piece all fold to the third folded piece direction, the pothook just can enter into the U-shaped piece inboard and with the chucking of U-shaped piece through the bayonet socket, with constitute triangle-shaped anti-disengaging mechanism after folding.

Specifically, the lower extreme of first folded piece is equipped with the U-shaped seat, still be equipped with the U-shaped groove on the U-shaped seat, the U-shaped groove can be simultaneously with second folded piece and third folded piece joint, the front end of U-shaped groove is equipped with first hinge hole, the rear end is equipped with first fixed orifices, be equipped with the second hinge hole on the third folded piece, be equipped with the second fixed orifices on the second folded piece, wherein the U-shaped seat passes through first hinge hole and the second hinge hole on the third folded piece and articulates, and first fixed orifices then can be corresponding and pass through bolt fixed connection with the second fixed orifices when second folded piece and third folded piece expand to this firm three fork structure of constitution.

Specifically, the U-shaped piece includes two fixing bases and U-shaped piece, and wherein fixing base and the lateral wall fixed connection of first folded piece, the both sides of U-shaped piece all with fixing base fixed connection, the bayonet socket is located one side of U-shaped piece, pull the knot including rotating part, break the hand, wherein rotating part and the lateral wall of second folded piece are articulated, the pothook is located the inboard of rotating part, and when second folded piece just aligns after folding with first folded piece, rotate and break the hand, can make the pothook enter into U-shaped piece inboard from the bayonet socket to triangle-shaped after folding anticreep mechanism is constituteed.

Specifically, the connecting lugs comprise a first connecting lug positioned at the bottom of the second folding piece and a second connecting lug positioned at the bottom of the third folding piece, wherein the first connecting lug and the second connecting lug are respectively provided with an extension part, the extension parts are respectively provided with a shaft hole, and the shaft holes are rotated through a rotating shaft, so that the second folding piece and the third folding piece can be folded and unfolded in a rotatable mode.

Specifically, the folding device further comprises a supporting limiting piece, one end of the supporting limiting piece is fixedly connected with the first folding piece, an arc-shaped clamping groove is formed in the other end of the supporting limiting piece, and the arc-shaped clamping groove can be abutted to the third folding piece after the first folding piece is folded, so that the first folding piece is limited to be excessively folded.

Compared with the prior art, the utility model has the beneficial effects that:

in the aspect of folding mechanism, the second folding piece and the third folding piece are rotationally folded through the connecting lugs, the first folding piece can simultaneously clamp the second folding piece and the third folding piece through the U-shaped seat, the first folding piece also can rotate relative to the third folding piece in a folding way, so that the three folding pieces are stable when unfolded, the second folding piece can be contracted to the minimum volume when folded, and in the aspect of fixing and preventing the falling mechanism after folding, the clamping hooks are arranged on the pulling buckle through the cooperation of the pulling buckle and the U-shaped piece, the clamping hooks are arranged on the U-shaped piece, and the clamping hooks can enter the U-shaped piece through the clamping openings when the first folding piece and the second folding piece are simultaneously folded towards the third folding piece, so that a triangular fixing mechanism is formed, and the second folding piece can be prevented from falling off from the outer side.

Drawings

Fig. 1: reference is made to the folding state of the utility model (locking of the spanner with the U-shaped piece);

Fig. 2: for the semi-unfolded state reference of the patent of the utility model (the second folding member and the third folding member are unfolded, and the first folding member is not unfolded);

fig. 3: an exploded view of the whole structure of the utility model is shown in the first patent;

Fig. 4: the second exploded view is the integral structure of the patent of the utility model;

fig. 5: the structure of the spanner buckle and the U-shaped piece is schematically shown in the utility model;

fig. 6: the utility model relates to a fully-unfolded state reference diagram;

Fig. 7: is a top view of the folded state of the utility model patent;

In the figure: the first folding member 1, the second folding member 2, the third folding member 3, the connection lug 100, the trigger 200, the U-shaped member 300, the hook 210, the bayonet 310, the U-shaped seat 500, the U-shaped groove 510, the first hinge hole 520, the first fixing hole 530, the second hinge hole 31, the second fixing hole 21, the fixing base 320, the U-shaped piece 330, the rotating portion 220, the breaking hand 230, the first connection lug 110, the second connection lug 120, the extending portion 111, the shaft hole 112, the supporting and limiting member 400, and the arc-shaped clamping groove 410.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings and detailed description, wherein it is to be understood that, on the premise of no conflict, the following embodiments or technical features may be arbitrarily combined to form new embodiments.

Referring to fig. 1 to 7:

Referring first to FIGS. 1-5, example 1: the utility model discloses a three-fork structure with a folding fixing device, which is particularly applied to a main body supporting structure of products such as a wheelchair, a shaping assisting cart and the like of medical appliances, on one hand, the folding three-fork structure is designed, the volume can be reduced to the minimum when the products are transported or stored, on the other hand, the folding three-fork structure is provided with the folding fixing device or mechanism after folding so as to prevent the three-fork structure from being scattered or slipped after folding, the device can be realized without tool operation by simply breaking off a spanner 200, and is quite simple, specifically, the structure of the utility model comprises a first folding piece 1, a second folding piece 2 and a third folding piece 3 which mutually form the three-fork structure, the second folding piece 2 and the third folding piece 3 realize foldable rotary connection through a connecting lug 100 at one side, the first folding piece 1 can rotate relative to the third folding piece 3, when the three folding members are unfolded, the first folding member 1 can be simultaneously abutted against the second folding member 2 and the third folding member 3 and limit the second folding member 2 and the third folding member 3 simultaneously so as to form a stable three-fork structure, one side of the second folding member 2 is rotatably provided with the pulling buckle 200, one side of the first folding member 1 is provided with the U-shaped member 300, the inner side of the pulling buckle 200 is provided with the clamping hook 210, one side of the U-shaped member 300 is provided with the bayonet 310, when the first folding member 1 and the second folding member 2 are folded towards the direction of the third folding member 3, the pulling buckle 200 is rotated, the clamping hook 210 just can enter the inner side of the U-shaped member 300 through the bayonet 310 and is clamped with the U-shaped member 300, after the clamping hook 210 is clamped with the U-shaped member 300, the first folding member 1, the second folding member 2 and the third folding member 3 form a three-fork structure because the second folding member 2 is rotated from the outer side to the direction of the third folding member 3, after the clamping hook 210 and the U-shaped member 300 are clamped, the second folding member 2 cannot rotate outwards any more, so that an anti-falling mechanism is formed.

With continued reference to fig. 1-5, in this embodiment, a folding mechanism between a first folding member 1 and a second folding member 2 and a third folding member 3 is disclosed, specifically, a U-shaped seat 500 is provided at the lower end of the first folding member 1, a U-shaped groove 510 is further provided on the U-shaped seat 500, the U-shaped groove 510 can be clamped with the second folding member 2 and the third folding member 3 at the same time, a first hinge hole 520 is provided at the front end of the U-shaped groove 510, a first fixing hole 530 is provided at the rear end of the U-shaped groove 510, a second hinge hole 31 is provided on the third folding member 3, a second fixing hole 21 is provided on the second folding member 2, wherein the U-shaped seat 500 is hinged with the second hinge hole 31 on the third folding member 3 through the first hinge hole 520, and the first fixing hole 530 can correspond to the second fixing hole 21 and be fixedly connected with the second fixing hole 21 through a bolt or a hand screw when the second folding member 2 and the third folding member 3 are unfolded, so that a stable structure is formed, that the third folding member 2 and the third folding member 3 can be clamped with the second folding member 2 and the third folding member 3 at the same time, and the two sides of the second folding member 3 can be just folded at the same line, and the two sides of the second folding member 2 and the 3 are just folded.

Referring to fig. 5, in this embodiment, the U-shaped member 300 includes two fixing bases 320 and a U-shaped piece 330, wherein the fixing bases 320 are fixedly connected with the side wall of the first folding member 1, both sides of the U-shaped piece 330 are fixedly connected with the fixing bases 320, the bayonet 310 is located at one side of the U-shaped piece 330, the trigger 200 includes a rotating portion 220 and a breaking-off hand 230, wherein the rotating portion 220 is hinged with the side wall of the second folding member 2, the hook 210 is located at the inner side of the rotating portion 220, and when the second folding member 2 is just aligned with the first folding member 1 after being folded, the breaking-off hand 230 is rotated, so that the hook 210 can enter the inner side of the U-shaped piece 330 from the bayonet 310, thereby forming a triangle-shaped post-folding anti-falling mechanism.

Referring to fig. 1 and 2, in the present embodiment, the connecting lug 100 includes a first connecting lug 110 located at the bottom of the second folding member 2 and a second connecting lug 120 located at the bottom of the third folding member 3, where the first connecting lug 110 and the second connecting lug 120 each have an extension portion 111, and the extension portions 111 are each provided with a shaft hole 112, and the shaft holes 112 are rotated by a rotating shaft, so as to realize rotatable folding and unfolding of the second folding member 2 and the third folding member 3.

In this embodiment, the folding device further includes a supporting and limiting member 400, one end of the supporting and limiting member 400 is fixedly connected with the first folding member 1, the other end of the supporting and limiting member is provided with an arc-shaped clamping groove 410, the arc-shaped clamping groove 410 can be abutted to the third folding member 3 after the first folding member 1 is folded, and the shape of the arc-shaped clamping groove 410 is just equivalent to the upper end face of the third folding member 3, so that the supporting and limiting member can be abutted to the upper end face of the third folding member 3, and a supporting structure is formed at the same time, so that the first folding member 1 is limited to be excessively folded.

The above embodiments are only preferred embodiments of the present utility model, and the scope of the present utility model is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present utility model are intended to be within the scope of the present utility model as claimed.

Claims (5)

1. The utility model provides a three fork structures of folding back fixing device in area, includes first folded piece, second folded piece and the third folded piece that constitutes three fork structures each other, its characterized in that: the folding type folding mechanism comprises a first folding piece, a second folding piece, a third folding piece, a connecting lug, a clamping hook, a clamping buckle and a triangle folding back-off preventing mechanism.

2. A trifurcated structure with post-folding fixation means as claimed in claim 1, wherein: the lower extreme of first folded piece is equipped with the U-shaped seat, still be equipped with the U-shaped groove on the U-shaped seat, the U-shaped groove can be simultaneously with second folded piece and third folded piece joint, the front end of U-shaped groove is equipped with first hinge hole, the rear end is equipped with first fixed orifices, be equipped with the second hinge hole on the third folded piece, be equipped with the second fixed orifices on the second folded piece, wherein the U-shaped seat is articulated through the second hinge hole on first hinge hole and the third folded piece, and first fixed orifices then can be corresponding and pass through bolt fixed connection with the second fixed orifices when second folded piece and third folded piece expand to this constitutes firm three fork structures.

3. A trifurcated structure with post-folding fixation means as claimed in claim 1, wherein: the U-shaped piece comprises two fixing seats and a U-shaped piece, wherein the fixing seats are fixedly connected with the side wall of the first folding piece, two sides of the U-shaped piece are fixedly connected with the fixing seats, the bayonet is located on one side of the U-shaped piece, the spanner comprises a rotating part and a hand breaking part, the rotating part is hinged with the side wall of the second folding piece, the clamping hook is located on the inner side of the rotating part, when the second folding piece is just aligned with the first folding piece after being folded, the hand breaking part is rotated, and the clamping hook can enter the inner side of the U-shaped piece from the bayonet, so that a triangular anti-falling mechanism after being folded is formed.

4. A trifurcated structure with post-folding fixation means as claimed in any one of claims 1 to 3, wherein: the connecting lugs comprise a first connecting lug positioned at the bottom of the second folding piece and a second connecting lug positioned at the bottom of the third folding piece, wherein the first connecting lug and the second connecting lug are respectively provided with an extension part, the extension parts are respectively provided with a shaft hole, and the shaft holes are rotated through a rotating shaft, so that the second folding piece and the third folding piece can be folded and unfolded in a rotatable mode.

5. A trifurcated structure with post-folding fixation means as claimed in any one of claims 1 to 3, wherein: still including supporting the locating part, the one end and the first folding piece fixed connection of supporting the locating part, the other end is equipped with the arc draw-in groove, the arc draw-in groove can be in the folding back butt third folding piece of first folding piece to this restriction first folding piece is excessively folded.