Maintenance needle and maintenance device
By designing a U-shaped repair needle and a repair device with guiding, pushing, and abutting components, the problem of high scrap rate after the thermal and sound insulation layer is solved, achieving efficient and low-cost repair results.
Patent Information
- Application Number
- CN202520490893.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-19
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-03-19
AI Technical Summary
In areas such as aircraft electronic equipment bays, the heat and sound insulation layers are damaged due to human operation, resulting in a high scrap rate and difficulty in repair. Current technical conditions are too demanding to effectively repair them.
A repair needle and repair device are provided, including a U-shaped connecting part and guiding, pushing and abutting parts. The guiding part guides the repair needle to be inserted into the heat insulation and sound insulation layer. The pushing part pushes the connecting part to deform into a plane with the bottom edge. The abutting part ensures that the insertion is stable, so as to realize splicing repair.
It improves the repair efficiency of thermal and sound insulation layers, reduces manufacturing costs, simplifies the operation process, and reduces the scrap rate of thermal and sound insulation layers.
Smart Images
Figure CN223854607U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a maintenance needle and maintenance device. BACKGROUND
[0002] In certain areas of the aircraft, such as electronic equipment cabin, system devices, cables and pipelines are arranged in large numbers, and the human operable space is limited. During the implementation of other system processes, workers often step on the heat and sound insulation layer (e.g. composed of sound insulation cotton), which is easy to cause damage to the heat and sound insulation layer, affecting the performance of the heat and sound insulation layer.
[0003] According to the installation technical conditions of the heat and sound insulation layer, the heat and sound insulation layer can be used as is when the size or number of fractures in the core of the heat and sound insulation layer does not exceed a certain value. However, the as-is use condition specified in the current installation technical conditions of the heat and sound insulation layer is based on not affecting its own performance, and the condition is relatively harsh. There are many heat and sound insulation layers that are scrapped due to not meeting the as-is use condition after fracture, and high scrap rate and difficulty in maintenance are the problems that need to be solved for the fractured heat and sound insulation layer. SUMMARY
[0004] The utility model is completed in view of the above problems, and aims to provide a maintenance needle and maintenance device that can conveniently splice and repair the heat and sound insulation layer and the like within a certain fracture degree.
[0005] To achieve the above-mentioned purpose, the utility model provides a maintenance needle, which comprises: a pair of bottom edges parallel to each other; and a connecting part in the shape of U connecting the middle of each of the pair of bottom edges at both ends, standing from the plane formed by the pair of bottom edges, and being deformable to be substantially coplanar with the plane.
[0006] According to the maintenance needle of the utility model, after the connecting part is made substantially coplanar with the plane formed by the pair of bottom edges, one pin is inserted into the first part of the heat and sound insulation layer and the like fractured into a first part and a second part, and the other pin is inserted into the second part, so that the fractured heat and sound insulation layer and the like can be conveniently spliced and repaired.
[0007] In addition, in the maintenance needle of the utility model, the connecting part preferably comprises: a pair of standing edges standing from the middle of each of the pair of bottom edges parallel to each other; and a horizontal edge connecting the top ends of the pair of standing edges and being perpendicular to the standing edges.
[0008] Further, in order to achieve the above object, the utility model provides a maintenance device for driving the above maintenance needle into a maintenance object, comprising: a guide portion guiding a pair of bottom edges to move in the extension direction of the bottom edges of the maintenance needle; a push portion pushing the end portions of the pair of bottom edges in the extension direction of the bottom edges to drive the maintenance needle to send out towards the outside; and an abutting portion, a passage is formed between the abutting portion and the guide portion, the passage only allows the connection portion of the maintenance needle to pass after the connection portion is deformed to be coplanar with the plane formed by the pair of bottom edges, and the abutting portion is used for the connection portion of the maintenance needle pushed by the push portion to abut, so that the connection portion is deformed to be substantially coplanar with the plane formed by the pair of bottom edges.
[0009] According to the maintenance device of the utility model, with the help of the guide portion, the push portion and the abutting portion, the maintenance needle can be conveniently sent out towards the outside after the connection portion is deformed to be substantially coplanar with the plane formed by the pair of bottom edges, so that the operation efficiency when splicing and repairing the broken heat and sound insulation layer is improved.
[0010] Further, in the maintenance device of the utility model, preferably further comprising a shell, the shell supports the guide portion, the push portion and the abutting portion, the guide portion comprises a pair of guide rods, a pair of the guide rods respectively guide a pair of bottom edges to move in the extension direction of the bottom edges of the maintenance needle, and protrude to the outside from the shell.
[0011] According to the maintenance device of the utility model, when splicing and repairing the heat and sound insulation layer broken into a first part and a second part, one of the pair of guide rods can be inserted into the first part and the other can be inserted into the second part, so that when the pair of bottom edges of the maintenance needle are pushed by the push portion to drive the maintenance needle into the heat and sound insulation layer, the two needle feet of the maintenance needle can be more reliably guided to move, so that one needle foot of the maintenance needle can be reliably inserted into the first part of the heat and sound insulation layer, and the other needle foot of the maintenance needle can be reliably inserted into the second part of the heat and sound insulation layer.
[0012] Further, in the maintenance device of the utility model, preferably further comprising a needle seat, the needle seat is arranged in the shell, the guide rods protrude to the outside from the needle seat, the needle seat has a bottom plate and a vertical plate, the bottom plate constitutes the guide portion, a pair of guide grooves are arranged on the bottom plate, the pair of guide grooves correspond to a pair of the guide rods respectively, and guide a pair of bottom edges to move, the vertical plate stands up from the bottom plate, and constitutes the abutting portion, a through hole constituting the passage is formed at the junction of the bottom plate and the vertical plate.
[0013] According to the maintenance device of the utility model, the guide portion and the abutting portion can be formed in a simple structure, which helps to reduce the manufacturing cost.
[0014] Further, in the maintenance device of the utility model, preferably set up the limit slot on the shell, the limit slot extends along the extension direction of the bottom edge of the maintenance needle, the push part includes: the sliding block that slides along the limit slot, and the push rod that protrudes from the sliding block and corresponds to a pair of bottom edges respectively.
[0015] According to the maintenance device of the utility model, the push part and the mechanism for guiding the push direction of the push part can be formed in a simple structure, which helps to reduce the manufacturing cost.
[0016] Further, in the maintenance device of the utility model, preferably still include: handle part, transmission part, the transmission part is the movement of the handle part transmission to the push part, so that the push part is close to or away from the guide part, and reset part, the reset part applies to the push part the force that makes the push part away from the guide part.
[0017] Further, in the maintenance device of the utility model, preferably still include the shell, the shell supports the guide part, the push part, the abutment part, the handle part, the transmission part and the reset part.
[0018] Further, in the maintenance device of the utility model, preferably the handle part can be rotatably supported in the shell, the transmission part includes first connecting rod and second connecting rod, one end side of the first connecting rod can be rotatably connected with the shell, the second connecting rod is rotatably connected with the other end side of the first connecting rod in the middle, one end side of the second connecting rod can be rotatably connected with the push part, the other end side of the second connecting rod is provided with long hole, the long hole is set up in the protrusion of the handle and is inserted, the reset part is spring, one end side of the spring is connected with the first connecting rod or the shell, and the other end side is connected with the second connecting rod.
[0019] According to the maintenance device of the utility model, the transmission part and the reset part can be formed in a simple structure, which helps to reduce the manufacturing cost.
[0020] Further, in the maintenance device of the utility model, preferably the maintenance device is handheld.
[0021] (utility model effect)
[0022] According to the utility model, after the maintenance needle is deformed to be substantially coplanar with the plane formed by the connecting part and the pair of bottom edges, one needle foot is inserted into the first part of the heat insulation and sound insulation layer or the like, such as being broken into a first part and a second part, and the other needle foot is inserted into the second part, so that the broken heat insulation and sound insulation layer or the like can be conveniently spliced and repaired. BRIEF DESCRIPTION OF DRAWINGS
[0023] Figure 1 It is a perspective view of a maintenance needle according to an embodiment of the utility model.
[0024] Figure 2 It is a perspective view of a maintenance device provided with the maintenance needle according to an embodiment of the utility model, wherein a part of the shell is omitted.
[0025] Figure 3 It is a partial perspective view of a maintenance device provided with the maintenance needle according to an embodiment of the utility model, wherein a part of the shell is omitted.
[0026] Figure 4 It is another partial perspective view of a maintenance device provided with the maintenance needle according to an embodiment of the utility model, wherein a part of the shell and the handle are omitted.
[0027] Figure 5 It is a sectional view of an example of a scene of splicing repair using the maintenance needle according to an embodiment of the utility model.
[0028] (Symbol explanation)
[0029] 100 Maintenance needle
[0030] 111 Bottom edge
[0031] 112 Connecting part
[0032] 1121 Vertical edge
[0033] 1122 Horizontal edge
[0034] 200 Maintenance device
[0035] 210 Guide rod
[0036] 220 Needle seat
[0037] 221 Bottom plate
[0038] 222 Vertical plate
[0039] 230 Slide block
[0040] 240 push rod
[0041] 251 side plate
[0042] 252 rim
[0043] 253 protrusion
[0044] 261 first connecting rod
[0045] 262 second connecting rod
[0046] 2621 long hole
[0047] 291 limiting groove
[0048] 292 guide rail
[0049] 300 heat insulation and sound insulation layer
[0050] 310 first part
[0051] 320 second part
[0052] 330 breaking opening
[0053] AB abutting portion
[0054] CS casing
[0055] GD guiding portion
[0056] HD handle portion
[0057] PS pushing portion
[0058] RS resetting portion
[0059] TS transmission portion
[0060] P1 pin shaft
[0061] P2 pin shaft
[0062] P3 pin shaft
[0063] P4 pin shaft DETAILED DESCRIPTION
[0064] Hereinafter, the maintenance needle and the maintenance device of the embodiment of the utility model will be described in combination with Figures 1 to 5
[0065] In addition, for the convenience of description, three directions orthogonal to each other are set as X direction, Y direction and Z direction, and one side of X direction is set as X1, the other side of X direction is set as X2, one side of Y direction is set as Y1, the other side of Y direction is set as Y2, one side of Z direction is set as Z1, and the other side of Z direction is set as Z2.
[0066] Structure of repair needle
[0067] As shown in Figure 1 , the repair needle 100 includes a pair of bottom edges 111 that are parallel to each other, and a connecting portion 112 that is a U-shaped portion connecting the middle of each of the pair of bottom edges 111, rises from a plane formed by the pair of bottom edges 111, and is deformable to be substantially coplanar with the plane. Figure 1
[0068] Here, as shown in Figure 1 , the connecting portion 112 includes a pair of standing edges 1121 that rise from the middle of each of the pair of bottom edges 111 in parallel to each other, and a horizontal edge 1122 that connects the top end (the upper side end) of the pair of standing edges 1121 and is perpendicular to the standing edges 1121. Figure 1
[0069] Further, the repair needle 100 is made of, for example, a nylon material.
[0070] Overall structure of repair device
[0071] As shown in Figures 2 to 4 , the repair device 200 for the repair needle 100 to be driven into a repair object includes a guide portion GD that guides movement of the pair of bottom edges 111 in the direction of extension of the bottom edges 111 of the repair needle 100 (the X direction in the illustrated example), a push portion PS that pushes the end of the pair of bottom edges 111 in the direction of extension of the bottom edges 111 of the repair needle 100 to send the repair needle 100 toward the outside, and an abutting portion AB in which a passage is formed between the guide portion GD and the abutting portion AB, the passage allowing only the connecting portion 112 of the repair needle 100 after the connecting portion 112 is deformed to be substantially coplanar with the plane formed by the pair of bottom edges 111 to pass, and the abutting portion AB for the connecting portion 112 of the repair needle 100 pushed by the push portion PS to abut, so that the connecting portion 112 is deformed to be substantially coplanar with the plane formed by the pair of bottom edges 111.
[0072] Here, as shown in Figure 2 , the repair device 200 further includes a handle portion HD, a transmission portion TS that transmits movement of the handle portion HD to the push portion PS to cause the push portion PS to approach or move away from the guide portion GD, and a return portion RS that applies a force to the push portion PS to move the push portion PS away from the guide portion GD.
[0073] Further, as shown in Figure 2 , the repair device 200 further includes a housing CS that supports the guide portion GD, the push portion PS, the abutting portion AB, the handle portion HD, the transmission portion TS, and the return portion RS.
[0074] In addition, the maintenance device 200 is handheld.
[0075] (Structure of the guiding section and the contact section)
[0076] like Figure 2 As shown, the guide section GD includes a pair of guide rods 210, which guide the movement of the bottom edge 111 of the service needle 100 in the extension direction (X direction in the illustrated example) and protrude from the housing CS to the outside.
[0077] Here, as Figure 2 and Figure 3 As shown, a needle holder 220 constituting a guide portion GD and an abutment portion GD is provided inside the housing CS. A guide rod 210 protrudes outward from the needle holder 220 (towards the X1 direction in the illustrated example). Specifically, the needle holder 220 has a base plate 221 and a vertical plate 222. The base plate 221 forms part of the guide portion GD and holds the service needle 100 (i.e., the guide portion GD holds the service needle 100). A pair of guide grooves (spaced apart in the Y direction in the illustrated example) are provided on the base plate 221. These guide grooves correspond to a pair of guide rods 210 and guide the movement of a pair of bottom edges 111 of the service needle 100. The vertical plate 222 stands upright from the base plate 221 (towards the Z1 direction in the illustrated example) and forms the abutment portion AB. A through hole is formed at the junction of the base plate 221 and the upright plate 222, which forms a passage for the maintenance pin 100 after the connection part 112 is deformed to pass through.
[0078] (Structure of the pressing part)
[0079] like Figure 2 and Figure 3 As shown, the push part PS includes: a slider 230; and a push rod 240 that protrudes from the slider 230 toward the needle seat 220 and corresponds to a pair of bottom edges 111 of the service needle 100.
[0080] Here, as Figure 2 As shown, a limiting groove 291 is provided on the outer casing CS. The limiting groove 291 extends along the extension direction of the bottom edge 111 of the maintenance pin 100 (the X direction in the illustrated example), and the slider 230 can slide along the limiting groove 291.
[0081] (The structure of the handle)
[0082] like Figure 2 As shown, the handle HD is rotatably supported on the housing CS.
[0083] Here, as Figure 2As shown in FIG. 1, the handle portion HD is rotatably supported to the case CS by a pin shaft PI. The pin shaft PI extends in parallel with the extending direction (Y direction in the illustrated example) of the lateral edge 1122 of the repair needle 100.
[0084] Further, as shown in FIG. 1, the handle portion HD includes a pair of side plates 251 and a surrounding edge 252. The pair of side plates 251 are opposed to each other with a space in the extending direction of the lateral edge 1122 of the repair needle 100, and the surrounding edge 252 connects a part of the edges of the pair of side plates 251 together. The pin shaft PI is provided to one end (the end on the Zl direction side in the illustrated example) of the pair of side plates 251. Figure 2 Figure 4 Further, as shown in FIG. 1, the handle portion HD includes a pair of side plates 251 and a surrounding edge 252. The pair of side plates 251 are opposed to each other with a space in the extending direction of the lateral edge 1122 of the repair needle 100, and the surrounding edge 252 connects a part of the edges of the pair of side plates 251 together. The pin shaft PI is provided to one end (the end on the Zl direction side in the illustrated example) of the pair of side plates 251.
[0085] Further, as shown in FIG. 1, the handle portion HD includes a pair of side plates 251 and a surrounding edge 252. The pair of side plates 251 are opposed to each other with a space in the extending direction of the lateral edge 1122 of the repair needle 100, and the surrounding edge 252 connects a part of the edges of the pair of side plates 251 together. The pin shaft PI is provided to one end (the end on the Zl direction side in the illustrated example) of the pair of side plates 251. Figure 4 Further, as shown in FIG. 1, the handle portion HD includes a pair of side plates 251 and a surrounding edge 252. The pair of side plates 251 are opposed to each other with a space in the extending direction of the lateral edge 1122 of the repair needle 100, and the surrounding edge 252 connects a part of the edges of the pair of side plates 251 together. The pin shaft PI is provided to one end (the end on the Zl direction side in the illustrated example) of the pair of side plates 251.
[0086] Figure 2 Further, as shown in FIG. 1, the handle portion HD includes a pair of side plates 251 and a surrounding edge 252. The pair of side plates 251 are opposed to each other with a space in the extending direction of the lateral edge 1122 of the repair needle 100, and the surrounding edge 252 connects a part of the edges of the pair of side plates 251 together. The pin shaft PI is provided to one end (the end on the Zl direction side in the illustrated example) of the pair of side plates 251. Figure 4 Further, as shown in FIG. 1, the handle portion HD includes a pair of side plates 251 and a surrounding edge 252. The pair of side plates 251 are opposed to each other with a space in the extending direction of the lateral edge 1122 of the repair needle 100, and the surrounding edge 252 connects a part of the edges of the pair of side plates 251 together. The pin shaft PI is provided to one end (the end on the Zl direction side in the illustrated example) of the pair of side plates 251.
[0087] As shown in FIG. 1, the transmission portion TS includes a first link 261 and a second link 262.
[0088] Figure 3 As shown in FIG. 1, the transmission portion TS includes a first link 261 and a second link 262. Figure 4 Here, as shown in FIG. 1, one end side of the first link 261 is rotatably connected to the case CS. Specifically, one end of the first link 261 is rotatably connected to the case CS via a pin shaft P2. The pin shaft P2 extends in parallel with the extending direction (Y direction in the illustrated example) of the lateral edge 1122 of the repair needle 100.
[0089] Figures 2 to 4 Further, as shown in FIG. 1, the handle portion HD includes a pair of side plates 251 and a surrounding edge 252. The pair of side plates 251 are opposed to each other with a space in the extending direction of the lateral edge 1122 of the repair needle 100, and the surrounding edge 252 connects a part of the edges of the pair of side plates 251 together. The pin shaft PI is provided to one end (the end on the Zl direction side in the illustrated example) of the pair of side plates 251.
[0090] Further, as shown in FIG. 1, the handle portion HD includes a pair of side plates 251 and a surrounding edge 252. The pair of side plates 251 are opposed to each other with a space in the extending direction of the lateral edge 1122 of the repair needle 100, and the surrounding edge 252 connects a part of the edges of the pair of side plates 251 together. The pin shaft PI is provided to one end (the end on the Zl direction side in the illustrated example) of the pair of side plates 251. Figure 3 Figure 4 Further, as shown in FIG. 1, the handle portion HD includes a pair of side plates 251 and a surrounding edge 252. The pair of side plates 251 are opposed to each other with a space in the extending direction of the lateral edge 1122 of the repair needle 100, and the surrounding edge 252 connects a part of the edges of the pair of side plates 251 together. The pin shaft PI is provided to one end (the end on the Zl direction side in the illustrated example) of the pair of side plates 251.
[0091] Further, asFigure 4 As shown in the figure, the other end side of the second link 262 is provided with a long hole 2621 for the protrusion 253 of the handle HD to be inserted into.
[0092] (Structure of the reset portion)
[0093] As shown in the figure, the reset portion RS is a spring, one end side of which is connected with the first link 261 or the housing CS, and the other end side of which is connected with the second link 262. Figure 2 Figure 4 As shown in the figure, the reset portion RS is a compression coil spring, one end of which is sleeved with the protrusion at one end of the first link 261, and the other end of which is sleeved with the protrusion at the other end of the second link 262.
[0094] Here, as shown in the figure, the reset portion RS is a compression coil spring, one end of which is sleeved with the protrusion at one end of the first link 261, and the other end of which is sleeved with the protrusion at the other end of the second link 262. Figure 2 Figure 4 As shown in the figure, the reset portion RS is a compression coil spring, one end of which is sleeved with the protrusion at one end of the first link 261, and the other end of which is sleeved with the protrusion at the other end of the second link 262.
[0095] (Main effects of the present embodiment)
[0096] According to the present embodiment, after the connecting portion 112 of the repair needle 100 is deformed to be substantially coplanar with the plane formed by the pair of bottom edges 111, as shown in the figure, by inserting one needle foot into the first part 310 of the heat and sound insulation layer 300 (there is a fracture opening 330 between the first part 310 and the second part 320) broken into the first part 310 and the second part 320 and inserting the other needle foot into the second part 320, the broken heat and sound insulation layer 300 can be conveniently spliced and repaired. Figure 5
[0097] In addition, according to the present embodiment, with the aid of the guide portion GD, the pushing portion PS and the abutting portion AB of the repair device 200, the repair needle 100 can be conveniently sent out after the connecting portion 112 is deformed to be substantially coplanar with the plane formed by the pair of bottom edges 111, thus helping to improve the work efficiency when splicing and repairing the broken heat and sound insulation layer 300.
[0098] The utility model has been described above in conjunction with the drawings, and obviously the specific implementation of the utility model is not limited by the above-mentioned embodiments.
[0099] For example, in the above-mentioned embodiments, the lateral edge 1122 of the connecting portion 112 of the repair needle 100 can also be initially formed into an arc shape.
[0100] In addition, in the above-mentioned embodiments, the guide portion GD of the repair device 200 includes a pair of guide rods 210, but is not limited thereto, and the guide rod 210 can also be omitted according to the situation.
[0101] In addition, in the above-mentioned embodiments, the repair needle 100 and the repair device 200 can also be combined to form a repair kit.
[0102] It should be understood that the present application is capable of combining each part of the embodiments freely, or appropriately deforming, omitting each part of the embodiments within the scope thereof.
Claims
1. A repair needle, characterized in that comprises: a pair of bottom edges parallel to each other; and a connecting portion in a U-shape connecting the middle of each of the pair of bottom edges, rising from a plane formed by the pair of bottom edges, and deformable to be coplanar with the plane.
2. The repair needle according to claim 1, wherein the connecting portion comprises: a pair of standing edges rising from the middle of each of the pair of bottom edges in parallel to each other; and a horizontal edge connecting the top ends of the pair of standing edges and perpendicular to the standing edges.
3. A repair device for driving the repair needle of claim 1 into a repair object, characterized by comprises: a guide portion guiding movement of the pair of bottom edges in the direction of extension of the bottom edges of the repair needle; a push portion pushing the end portions of the pair of bottom edges in the direction of extension of the bottom edges to send out the repair needle toward the outside; and an abutting portion between which and the guide portion a passage is formed that allows only the connecting portion of the repair needle after deformation to be coplanar with the plane formed by the pair of bottom edges to pass through, and against which the connecting portion of the repair needle pushed by the push portion toward the outside abuts to deform the connecting portion to be coplanar with the plane formed by the pair of bottom edges.
4. The repair device according to claim 3, further comprising: a housing supporting the guide portion, the push portion, and the abutting portion, the guide portion comprises a pair of guide rods, the pair of guide rods respectively guide movement of the pair of bottom edges in the direction of extension of the bottom edges of the repair needle and protrude from the housing to the outside.
5. The repair device according to claim 4, further comprising: a needle seat, the needle seat is provided in the housing, the guide rods protrude from the needle seat to the outside, the needle seat has a bottom plate and a standing plate, the bottom plate constitutes a part of the guide portion, a pair of guide grooves corresponding to the pair of guide rods respectively are provided on the bottom plate and guide movement of the pair of bottom edges, the standing plate rises from the bottom plate and constitutes the abutting portion, a through-hole constituting the passage is formed at the boundary of the bottom plate and the standing plate.
6. The repair device according to claim 5, wherein: a limit groove extending in the direction of extension of the bottom edges of the repair needle is provided on the housing, the push portion comprises: a slider sliding along the limit groove; and push rods protruding from the slider toward the needle seat and corresponding to the pair of bottom edges respectively.
7. The servicing device of claim 3, wherein further comprising: a handle portion; a transmission portion transmitting movement of the handle portion to the push portion to make the push portion approach or move away from the guide portion; and a reset portion applying a force to the push portion to make the push portion move away from the guide portion.
8. The repair device according to claim 7, further comprising: a housing supporting the guide portion, the push portion, the abutting portion, the handle portion, the transmission portion, and the reset portion.
9. The repair device according to claim 8, wherein: the handle portion is rotatably supported by the housing, the transmission portion comprises a first link and a second link, one end side of the first link is rotatably connected to the housing, the second link is rotatably connected to the push portion, the first link is rotatably connected to the second link, and the second link is rotatably connected to the handle portion. The second link is rotatably connected to the other end side of the first link at the middle, one end side of the second link is rotatably connected to the push portion, and the other end side of the second link is provided with a long hole into which a protrusion provided on the handle is inserted, The reset portion is a spring, one end side of the spring is connected to the first link or the housing, and the other end side of the spring is connected to the second link.
10. The repair device according to claim 3, wherein The repair device is handheld.