CN211765809U

CN211765809U - Folding joint and shifting machine with same

Info

Publication number: CN211765809U
Application number: CN202020026315.4U
Authority: CN
Inventors: 李千; 郭晓谭; 贺坤
Original assignee: Shenzhen Mai Kangxin Medical Co ltd
Current assignee: Shenzhen Mai Kangxin Medical Co ltd
Priority date: 2020-01-07
Filing date: 2020-01-07
Publication date: 2020-10-27
Anticipated expiration: 2030-01-07

Abstract

The utility model is suitable for a recovered utensil technical field provides a folding joint and has this folding joint's aversion machine, and folding joint includes first pin joint portion, second pin joint portion and rotary switch, and first pin joint portion includes first through-hole and the first draw-in groove that radially sets up, and second pin joint portion includes the pivot that passes first through-hole, and the pivot has second through-hole and second draw-in groove; the rotary switch comprises a lock shaft penetrating through the second through hole and a lock pin positioned at one end of the lock shaft, the lock pin penetrates through the second clamping groove, the lock shaft can slide along the second through hole to enable the rotary switch to be switched between a locking position and an unlocking position, and under the locking position, the mutual rotation of the first pivoting part and the second pivoting part is limited; under the unlocking position, the first pivoting part and the second pivoting part can rotate freely. This folding joint implementation mode is simple, and the manufacturing of being convenient for is applied to the handle of machine of shifting with folding joint, can realize that the handle is folding, has solved the problem that user's hand activity is influenced, easy operation.

Description

Folding joint and shifting machine with same

Technical Field

The utility model relates to a be applicable to recovered utensil technical field, especially relate to a folding joint and have this folding joint's aversion machine.

Background

At present, most of devices in the market for serving old people and disabled people with inconvenient actions have single functions, the application range is limited to simple displacement, walking instead of walking, bathing or defecation, and particularly, the mutual moving from a wheelchair to a sofa, a bed, a toilet seat, a seat and the like is problematic. As is known to all, the sofa, the seat and the bed on the market have no uniform standard height, but the traditional shifting machine still stops at the fixed height stage, so that the height of the sofa, the bed and the pedestal pan is difficult to match, the nursing is inconvenient, and the nursing is carried, carried and carried by a nursing staff. In addition, the existing shifting machine handle cannot be folded and stored, so that daily activities of eating, drinking tea, reading and the like of a user are influenced.

In view of the above, the prior art is obviously inconvenient and disadvantageous in practical use, and needs to be improved.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned defect, the utility model aims to provide a folding joint and have this folding joint's aversion machine, it can realize aversion machine handle convenient and fast's folding, and the structure is succinct, is convenient for make.

In order to achieve the above object, the present invention provides a folding joint, including: the first pivoting part comprises a first through hole and a first clamping groove which is radially arranged along the edge of the first through hole; the second pivoting part comprises a rotating shaft penetrating through the first through hole, and the rotating shaft is provided with a second through hole and a second clamping groove which are axially arranged; the rotary switch comprises a lock shaft penetrating through the second through hole and a lock pin radially arranged at one end of the lock shaft, the lock pin penetrates through the second clamping groove, the rotary switch is provided with a locking position and an unlocking position, and the lock shaft can slide along the second through hole so as to enable the rotary switch to be switched between the locking position and the unlocking position; the rotary switch is in a locking position, the lock pin is limited in the first clamping groove, and the mutual rotation of the first pivoting part and the second pivoting part is limited; the rotary switch is located the unblock position, and the lockpin breaks away from first draw-in groove, but first pin joint portion and second pin joint portion free rotation.

According to the utility model discloses a folding joint, folding joint still include the fixed plate, and the fixed plate is connected in pivot one end, and first pin joint portion restricts between second pin joint portion and fixed plate.

According to the utility model discloses a folding joint, folding joint still include elastomeric element, and elastomeric element connects fixed plate and rotary switch's lockpin respectively, and elastomeric element prevents rotary switch to get into the unblock position with the lockpin cooperation.

According to the utility model discloses a folding joint, rotary switch still include with lock axle fixed connection's regulation press the pressing plate, adjust and set up in the one end that the lockpin was kept away from to the lock axle according to the pressing plate.

According to the utility model discloses a folding joint is provided with first damping packing ring between first pin joint portion and the second pin joint portion.

According to the utility model discloses a folding joint is provided with second damping packing ring between first pin joint portion and the fixed plate.

According to the utility model discloses a folding joint, the one side that deviates from first pin joint portion on the fixed plate is provided with the paster.

According to the utility model discloses a folding joint, the transversal square of personally submitting of second through-hole and lock axle.

According to the utility model discloses a folding joint, folding joint still include the first articulated arm of being connected with first pin joint portion and the second articulated arm of being connected with second pin joint portion.

The utility model also provides a machine of shifting with foretell folding joint, the machine of shifting include main part and handle, and the main part is connected with first pin joint portion, and the handle is connected with second pin joint portion.

The utility model provides a folding joint and a shifting machine with the folding joint, the folding joint comprises a first pivot joint part, a second pivot joint part and a rotary switch, the first pivot joint part comprises a first through hole and a first clamping groove which is radially arranged along the edge of the first through hole, the second pivot joint part comprises a rotating shaft which passes through the first through hole, and the rotating shaft is provided with a second through hole and a second clamping groove which are axially arranged; the rotary switch comprises a lock shaft penetrating through the second through hole and a lock pin radially arranged at one end of the lock shaft, the lock pin penetrates through the second clamping groove, the lock shaft of the rotary switch can slide along the second through hole so as to enable the rotary switch to be switched between a locking position and an unlocking position, the lock pin of the rotary switch is limited in the first clamping groove at the locking position, and the mutual rotation of the first pivoting part and the second pivoting part is limited; in the unlocking position, the lock pin of the rotary switch is separated from the first clamping groove, and the first pivoting part and the second pivoting part can rotate freely. The rotary locking and unlocking of the folding joint can be realized only by moving the lock shaft of the rotary switch, the implementation mode is simple, the manufacture is convenient, and the folding joint can be switched between the rotary locking state and the rotary unlocking state conveniently and quickly.

Will the utility model discloses a folding joint is applied to between the handle and the main part of machine of shifting, can make the handle of machine of shifting fold for the main part, has solved the problem that the handle influences user's hand activity, and the user can sit the convenient activity that needs the hand participation such as eating, reading on the machine of shifting, and easy operation, and convenient to use is swift.

Drawings

Fig. 1 is a perspective view of a shifting machine according to an embodiment of the present invention;

fig. 2 is a schematic view of a displacement machine according to an embodiment of the present invention with the handle in an unfolded state;

fig. 3 is a schematic view of a handle of the shifting machine according to an embodiment of the present invention in a folded state;

fig. 4 is an exploded view of a folding joint of the shifting machine according to an embodiment of the present invention from one perspective;

fig. 5 is an exploded view of the folding joint of the shifting machine according to an embodiment of the present invention from another perspective;

fig. 6 is a perspective view of a rotary switch of a folding joint of the shifting machine according to an embodiment of the present invention;

fig. 7 is a perspective view of the first pivot portion and the first joint arm of the folding joint of the shifting machine according to an embodiment of the present invention;

fig. 8 is a cross-sectional view of the folding joint of the shifting machine according to an embodiment of the present invention in the locked position;

FIG. 9 is a cross-sectional view taken along the line C-C of FIG. 8;

fig. 10 is a schematic view illustrating that the folding joint of the shifting machine according to an embodiment of the present invention is in the unlocking position, and the first pivot portion and the second pivot portion rotate relatively by a small angle;

FIG. 11 is a cross-sectional view taken along the line L-L in FIG. 10;

fig. 12 is a schematic view of the folding joint of the shifting machine according to an embodiment of the present invention in an unlocking position, wherein the first pivot portion and the second pivot portion rotate relatively to each other by a large angle;

fig. 13 is a sectional view taken along the direction H-H in fig. 12.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1 to 3, an embodiment of the present invention provides a shifting machine 100, where the shifting machine 100 includes a main body 10 and a handle 20, and the main body 10 is connected to the handle 20 through a folding joint 30. The handle 20 is used for the nursing staff to push the shifting machine 100, and the handle 20 can be rotated relative to the main body 10 through the folding joint 30, so that the folding effect of the handle 20 is realized.

As shown in fig. 1, the main body 10 includes a base bracket assembly 11, a moving bar assembly 12, a left bracket assembly 13, a right bracket assembly 14, a foot lifting assembly 15, and a bowl assembly 16. The left and right rack assemblies 13 and 14 of the main body 10 are respectively connected to a handle 20 through a folding joint 30, so that both handles 20 of the shifter 100 can be folded. As shown in fig. 1 and 2, the handle 20 is in an unfolded state, and the handle 20 is higher than the main body 10, so as to influence the hand movement of the rehabilitation personnel sitting on the displacement machine 100; as shown in fig. 3, the handle 20 is folded by the folding joint 30 and folded into the main body 10, so that the arm movements of the rehabilitation personnel using the shifter 100 can be free from the influence of the handle 20, and the user can sit on the shifter 100 to conveniently perform the movements requiring the participation of hands, such as eating and reading.

As shown in fig. 4 to 13, the folding joint 30 includes a first pivot portion 31, a second pivot portion 32, a rotary switch 33, a fixing plate 34, an elastic member 35, a first damping washer 36, and a second damping washer 37, which are disposed along the same axis.

The first pivot portion 31 includes a first through hole 311 at the center thereof and a first locking groove 312 radially disposed along the edge of the first through hole 311.

The second pivot portion 32 includes a rotating shaft 321 passing through the first through hole 311, and the center of the rotating shaft 321 has a second through hole 322 and a second engaging groove 323 disposed axially.

The rotary switch 33 includes a lock shaft 331 passing through the second through hole 322 and a lock pin 332 radially disposed at one end of the lock shaft 331, wherein the lock pin 332 penetrates through the second engaging groove 323. Since the lock pin 332 penetrates through the second engaging groove 323 of the second pivoting portion 32, the relative rotation between the rotary switch 33 and the second pivoting portion 32 is limited, and the rotary switch 33 can only rotate integrally with the second pivoting portion 32. The rotary switch 33 further includes an adjusting pressing plate 333 fixedly connected to the lock shaft 331, and the adjusting pressing plate 333 is disposed at an end of the lock shaft 331 away from the lock pin 332.

The rotary switch 33 has a lock position and an unlock position, and the lock shaft 331 is slidable along the second through hole 322 to switch the rotary switch 33 between the lock position and the unlock position. Referring to fig. 6, 7, 8 and 10, the rotary switch 33 is in the locked position, the lock pin 332 is restricted in the first slot 312, and the mutual rotation of the first pivot portion 31 and the second pivot portion 32 is restricted; when the rotary switch 33 is in the unlocking position, the lock pin 332 is disengaged from the first engaging groove 312, and the first pivot portion 31 and the second pivot portion 32 can rotate freely.

The fixing plate 34 is connected to one end of the rotating shaft 321 of the second pivoting portion 32, and the first pivoting portion 31 is limited between the second pivoting portion 32 and the fixing plate 34. Specifically, the fixing plate 34 is connected to the rotating shaft 321 through a screw, so that the fixing plate 34 can be conveniently installed.

The elastic member 35 is connected to the lock pins 332 of the fixed plate 34 and the rotary switch 33, respectively, and the elastic member 35 cooperates with the lock pins 332 to prevent the rotary switch 33 from entering the unlocking position. The elastic member 35 is preferably a spring.

The first damping washer 36 is disposed between the first pivot portion 31 and the second pivot portion 32, and the second damping washer 37 is disposed between the first pivot portion 31 and the fixing plate 34. The first damping washer 36 and the second damping washer 37 can reduce the friction force when the first pivoting portion 31 and the second pivoting portion 32 rotate relatively.

As shown in fig. 8 and 9, when the rotary switch 33 is in the locked position, the lock pin 332 of the rotary switch 33 is restricted in the first locking groove 312 of the first pivot portion 31 due to the elastic action of the elastic member 35, and the relative rotation between the rotary switch 33 and the second pivot portion 32 is restricted by the second locking groove 323, so that the first pivot portion 31 and the second pivot portion 32 can be locked by the lock pin 332 of the rotary switch 33, and the first pivot portion 31 and the second pivot portion 32 are restricted from relative rotation.

As shown in fig. 10 to 13, when the adjusting pressing plate 333 of the rotary switch 33 receives an external force along the axial direction of the locking shaft 331, the locking shaft 331 moves axially along the second through hole 322 of the second pivot portion 32 and approaches the fixing plate 34, the elastic member 35 is compressed, the locking pin 332 is disengaged from the first locking groove 312 of the first pivot portion 31, the rotary switch 33 enters the unlocking position, and the first pivot portion 31 and the second pivot portion 32 can rotate freely. Fig. 10 and 11 illustrate that when the adjusting pressing plate 333 of the rotary switch 33 receives an external force along the axial direction of the locking shaft 331, the first pivoting portion 31 and the second pivoting portion 32 rotate relatively by a small angle, and it can be seen that the locking pin 332 is disengaged from the first locking slot 312; fig. 12 and 13 illustrate a structure in which when the adjustment pressing plate 333 of the rotary switch 33 receives an external force along the axial direction of the locking shaft 331, the first pivoting portion 31 and the second pivoting portion 32 relatively rotate by a large angle, and at this angle, the handle 20 is folded to the main body 10.

When the external force of the adjusting pressing plate 333 of the rotary switch 33 is lost, if the lock pin 332 is not aligned with the first locking groove 312 in the radial direction of the first through hole 311, the lock pin 332 abuts against the edge of the first through hole 311, the lock shaft 331 and the lock pin 332 of the rotary switch 33 do not move axially, and the first pivoting portion 31 and the second pivoting portion 32 can still rotate relatively; if the lock pin 332 rotates to the position of the first engaging groove 312, the lock shaft 331 and the lock pin 332 are axially moved by the elastic force of the elastic component 35, the lock pin 332 enters and is limited to the first engaging groove 312, the rotary switch 33 is located at the locking position, and the relative rotation between the first pivot portion 31 and the second pivot portion 32 is limited.

The utility model discloses in, only need through the second through-hole 322 axial displacement rotary switch 33 along second pin joint portion 32 lock axle 331 can make folding joint 30 switch under rotation locking and rotation unblock state, and the implementation is simple, the operation of being convenient for.

In some very simple embodiments, the solution without the fixing plate 34, the elastic member 35, the first damping washer 36 and the second damping washer 37 may be adopted, and the folding joint 30 can be switched between the rotation locking state and the rotation unlocking state just by manually moving the locking shaft 331 and the locking pin 332.

As shown in fig. 4, the folding joint 30 further includes a first joint arm 38 connected to the first pivot portion 31 and a second joint arm 39 connected to the second pivot portion 32. The first and second articulated

arms

38 and 39 are used to be connected to the main body 10 and the handle 20 by screws, respectively, so as to unfold and fold the handle 20. When the folding joint 30 is in the locked position, the first joint arm 38 and the second joint arm 39 are in the unfolded state as shown in fig. 9; with the folding joint 30 in the unlocked position, the first and second articulated

arms

38, 39 can be rotated to assume the folded position shown in fig. 11.

As shown in fig. 4, the folding joint 30 further includes a patch 341, and the patch 341 is disposed on a surface of the fixing plate 34 away from the first pivot portion 31. Since the fixing plate 34 is connected to the rotating shaft 321 through screws, the patch 341 is preferably a beautifying sticker capable of shielding the screws on the fixing plate 34 and improving the aesthetic property of the folding joint 30.

As shown in fig. 4 and 7, the first pivot portion 31 has a flange shape, and a middle portion thereof protrudes to one side so that a height difference is formed between an outer edge and the middle portion thereof for placing the first damping washer 36. And the outer edge of the first pivot part 31 axially extends to form a first ring body 313 on the opposite side of the middle part, a reinforcing part 314 is formed between the first through hole 311 of the first pivot part 31 and the first ring body 313, and the reinforcing part 314 is provided with a plurality of reinforcing ribs arranged along the radial direction. The first engaging groove 312 is radially disposed between the first through hole 311 and the reinforcing portion 314. Preferably, the first card slot 312 includes two card slots symmetrically disposed.

As shown in fig. 5, the second pivot portion 32 is flange-shaped, and has a middle portion protruding to one side to form a rotating shaft 321, and an outer edge extending axially to the opposite side of the rotating shaft 321 to form a second ring-shaped body 324. And the rotating shaft 321 is provided with two symmetrical second locking grooves 323 along the axial direction thereof. The center of the rotating shaft 321 is axially provided with a second through hole 322 having a square cross section.

As shown in fig. 6, the rotary switch 33 includes a locking shaft 331, and a locking pin 332 and an adjustment pressing plate 333 which are located at both ends of the locking shaft 331. The adjusting and pressing plate 333 has a circular shape, and the diameter of the adjusting and pressing plate 333 is matched with the inner diameter of the second ring-shaped body 324 of the second pivoting portion 32, so that the adjusting and pressing plate 333 can move axially in the space formed by the second ring-shaped body 324. The cross section of the locking shaft 331 is square and is matched with the shape of the second through hole 322. The second through hole 322 and the lock shaft 331 are formed in a square shape, so that the connection strength between the lock shaft 331 and the second pivot portion 32 can be improved, and the lock pin 332 is prevented from being damaged.

As shown in fig. 6, it is preferable that the adjustment pressing plate 333 is integrally formed with the locking shaft 331, and the lock pin 332 has a center fixing portion and two end portions, and the center fixing portion has a screw hole, so that the lock pin 332 can be fixed to an end surface of the locking shaft 331 away from the adjustment pressing plate 333 by a screw. With this structure, the rotary switch 33 and the second pivot portion 32 can be easily assembled and disassembled, the lock shaft 331 can be inserted through the second through hole 322 of the second pivot portion 32, the adjusting and pressing plate 333 of the rotary switch 33 can be accommodated in the space formed by the second annular body 324 of the second pivot portion 32, and then the lock pin 332 can be locked on the lock shaft 331 by screws, so that the rotary switch 33 and the second pivot portion 32 can be integrally assembled.

In this embodiment, the first pivot portion 31 has two symmetrical first engaging grooves 312, the second pivot portion 32 also has two symmetrical second engaging grooves 323, and the lock pin 332 has two symmetrical ends. The first pivot portion 31 and the second pivot portion 32 can be locked after being rotated by a predetermined angle. In other embodiments, the two first engaging grooves 312, the two engaging grooves 323, and the two ends of the locking pin 332 may be disposed asymmetrically, so that the first pivoting portion 31 and the second pivoting portion 32 can rotate at different angles to achieve locking. Obviously, the lock pin 332 may be provided with only one or more ends, and the first locking groove 312 and the second locking groove 323 may be provided in plurality, so as to realize different rotation angles and structural strengths.

The folding handle 20 and the folding joint 30 of the shifting machine 100 of the embodiment also have the advantages of convenient installation, simple structure and simple manufacturing process. When the folding joint 30 is installed, the first damping washer 36 is first placed between the first pivoting portion 31 and the second pivoting portion 32, and the rotating shaft 321 of the second pivoting portion 32 is inserted into the first through hole 311 of the first pivoting portion 31, so that the first pivoting portion 31 is combined with the second pivoting portion 32; then, the lock shaft 331 of the rotary switch 33 is inserted into the second through hole 322 of the second pivot part 32, and then the lock pin 332 is locked on the lock shaft 331 by a screw, so that the rotary switch 33, the first pivot part 31 and the second pivot part 32 are integrally installed; finally, the second damping washer 37, the elastic member 35 and the fixing plate 34 are mounted on the first pivot portion 31 on the side away from the second pivot portion, and the patch 341 is attached to the fixing plate 34. Wherein, the elastic component 35 has one side abutting against the lock pin 332 of the rotary switch 33 and the other side abutting against the fixed plate 34; the fixing plate 34 is connected to the rotating shaft 321 of the second pivot portion 32 by screws. After the folding joint 30 is installed, the first joint arm 38 or the second joint arm 39 of the folding joint 30 is connected with the bracket assembly of the main body 10 through a screw, and the second joint arm 39 or the first joint arm 38 of the folding joint 30 is connected with the handle 20 through a screw, so that the folding joint 30 is installed on the shifter 100 conveniently and quickly. And the utility model discloses a folding joint 30's subassembly simple structure can adopt modes such as moulding plastics convenient and fast's manufacturing.

The embodiment of the utility model provides a still provide a folding joint 30, include: the first pivot portion 31 includes a first through hole 311 and a first engaging groove 312 radially disposed along an edge of the first through hole 311; the second pivot portion 32 includes a rotating shaft 321 passing through the first through hole 311, the rotating shaft 321 has a second through hole 322 and a second engaging groove 323 arranged axially; the rotary switch 33 comprises a lock shaft 331 passing through the second through hole 322 and a lock pin 332 radially arranged at one end of the lock shaft 331, the lock pin 332 penetrates through the second clamping groove 323, the rotary switch 33 has a locking position and an unlocking position, and the lock shaft 331 can slide along the second through hole 322 to enable the rotary switch 33 to be switched between the locking position and the unlocking position; wherein, the rotary switch 33 is at the locking position, the lock pin 332 is limited in the first slot 312, and the mutual rotation of the first pivot part 31 and the second pivot part 32 is limited; when the rotary switch 33 is in the unlocking position, the lock pin 332 is disengaged from the first engaging groove 312, and the first pivot portion 31 and the second pivot portion 32 can rotate freely. The specific structure of the folding joint 30 has been described in detail above and will not be described in detail.

Finally, the utility model provides a folding joint of new technical conception and have this folding joint's aversion machine, folding joint includes first pin joint portion, second pin joint portion and rotary switch, and first pin joint portion includes first through-hole and the first draw-in groove that radially sets up along first through-hole edge, and second pin joint portion includes the pivot that passes first through-hole, and the pivot has axially arranged second through-hole and second draw-in groove; the rotary switch comprises a lock shaft penetrating through the second through hole and a lock pin radially arranged at one end of the lock shaft, the lock pin penetrates through the second clamping groove, the lock shaft of the rotary switch can slide along the second through hole so as to enable the rotary switch to be switched between a locking position and an unlocking position, the lock pin of the rotary switch is limited in the first clamping groove at the locking position, and the mutual rotation of the first pivoting part and the second pivoting part is limited; in the unlocking position, the lock pin of the rotary switch is separated from the first clamping groove, and the first pivoting part and the second pivoting part can rotate freely. The rotary locking and unlocking of the folding joint can be realized only by moving the lock shaft of the rotary switch, the implementation mode is simple, the manufacture is convenient, and the folding joint can be switched between the rotary locking state and the rotary unlocking state conveniently and quickly.

Naturally, the present invention can be embodied in many other forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be made by one skilled in the art without departing from the spirit or essential attributes thereof, and it is intended that all such changes and modifications be considered as within the scope of the appended claims.

Claims

1. A folding joint, comprising:

the first pivoting part comprises a first through hole and a first clamping groove which is radially arranged along the edge of the first through hole;

the second pivoting part comprises a rotating shaft penetrating through the first through hole, and the rotating shaft is provided with a second through hole and a second clamping groove which are axially arranged;

the rotary switch comprises a lock shaft penetrating through the second through hole and a lock pin radially arranged at one end of the lock shaft, the lock pin penetrates through the second clamping groove, the rotary switch is provided with a locking position and an unlocking position, and the lock shaft can slide along the second through hole to enable the rotary switch to be switched between the locking position and the unlocking position;

the rotary switch is in a locking position, the lock pin is limited in the first clamping groove, and the mutual rotation of the first pivoting part and the second pivoting part is limited; the rotary switch is located at an unlocking position, the lock pin is separated from the first clamping groove, and the first pivoting portion and the second pivoting portion can rotate freely.

2. The folding joint of claim 1, further comprising a fixing plate connected to one end of the rotating shaft, wherein the first pivot portion is limited between the second pivot portion and the fixing plate.

3. The folding joint of claim 2, further comprising an elastic member, wherein the elastic member is connected to the fixing plate and the lock pin of the rotary switch, and the elastic member cooperates with the lock pin to prevent the rotary switch from entering the unlocking position.

4. The folding joint of claim 1, wherein the rotary switch further comprises an adjusting and pressing plate fixedly connected to the lock shaft, and the adjusting and pressing plate is disposed at an end of the lock shaft away from the lock pin.

5. The folding joint of claim 1 wherein a first damping washer is disposed between said first pivot and said second pivot.

6. The folding joint of claim 2 wherein a second damping washer is disposed between said first pivot and said fixed plate.

7. The folding joint of claim 2, wherein a surface of the fixing plate facing away from the first pivot portion is provided with a patch.

8. The folding joint of claim 1 wherein said second through hole and said lock shaft are square in cross section.

9. The folding joint of claim 1 further comprising a first articulating arm connected to said first pivot and a second articulating arm connected to said second pivot.

10. A displacer having a folding joint according to any one of claims 1 to 9, characterized in that the displacer comprises a main body connected to the first pivot joint and a handle connected to the second pivot joint.