Elastic clamping piece, clamping handle suite and steel sheet clamp

Abstract

The invention discloses an elastic clamping piece, a clamping handle kit and a steel sheet clamp, and belongs to the field of stationery. The elastic clamping piece is formed by oppositely bending a rectangular steel sheet along two parallel bending ridges and comprises a clamping part and two connecting parts, the other end, opposite to the bending ridges, of the clamping part is an opening and closing end, the clamping part comprises a hinge hole for containing a hinge shaft of the clamping handle and a hinge shaft inlet and outlet facilitating disassembly and assembly of the hinge shaft of the clamping handle, and the two connecting parts are connected with the hinge hole. The length of the table attaching clamp part is larger than that of the rotary clamp part, the table attaching clamp part is attached to a table top, books and materials can be placed on the table attaching clamp part, and after the rotary clamp part is opened, the books and materials are stacked and pushed between the table attaching clamp part and the rotary clamp part. The clamping handle set is composed of two clamping handles, each clamping handle is formed by bending a steel wire into an n shape and comprises two vertical handles with the top ends connected with each other and a hinge shaft formed by bending the bottom ends of the two vertical handles towards the two sides, and the vertical handles of the table attaching clamping handle comprise stabilizing parts protruding towards the two sides. The steel sheet clamp is formed by assembling an elastic clamping sheet and a clamping handle sleeve piece.

Description

Technical Field

[0001] An elastic clip, a clip handle kit, and a steel clip belong to the field of stationery, and particularly relate to a steel clip for conveniently holding thick documents, as well as the elastic clip and clip handle kit that make up the steel clip. Background Technology

[0002] The commonly known binder clip consists of a rectangular steel sheet bent along two ridges parallel to one side to form an elastic clip including two clips and a connecting part, and two identical clip handles respectively hinged to one clip of the elastic clip. The clip handles are hinged to the opening and closing ends of the clips. The opening and closing ends of the elastic clip are pried open by using the ridges as fulcrums to clamp and store loose pages.

[0003] As the thickness of the materials being clamped increases, the operation of binder clips becomes more difficult. Firstly, the thicker the materials, the easier they are to spread out, making it more difficult to engage the opening end. Secondly, as the thickness of the materials increases, it becomes increasingly difficult to operate the handle with one hand to open the opening end. Thirdly, as the quantity of materials to be clamped increases, coordinating both hands becomes increasingly difficult. This is especially true in student desk management, where learning materials need to be organized by subject, and the materials for a single subject are often quite thick; existing binder clips cannot meet this requirement. How to clamp thicker materials has become an urgent problem to solve. Summary of the Invention

[0004] After repeated research, the applicant discovered that symmetrical design is a fundamental characteristic of the binder clip, including not only the symmetry of the elastic clip itself, but also the symmetry of the two handles. This symmetrical structure facilitates balanced force application on the two handles and is a solution specifically optimized for holding documents with one hand and clamping them with the other.

[0005] However, for thicker documents, one-handed clamping becomes difficult. Using a support platform, such as a desktop, one clamp and handle rest on the surface, while pressing down on the other handle rotates the other clamp. In this desktop-assisted clamping method, the forces on the two handles change. The handle in contact with the desktop experiences almost no displacement, while the handle not in contact with the desktop experiences twice the displacement compared to two-handed clamping. The clamp's stability decreases; pressing down on the handle can easily cause the clamp to slip or even flip, including forward / backward and sideways flipping. Maintaining a symmetrical two-handed clamping structure based on desktop-assisted clamping is no longer reasonable.

[0006] Based on the above findings, the applicant abandoned the symmetrical structure and designed an elastic clip, a clip handle kit, and a steel clip, the specific solutions of which are as follows: Technical Solution 1: An elastic clamp is formed by bending a rectangular steel sheet along two parallel ridges facing each other. The two ridges form a connecting part, and the area outside the ridges forms a clamping part. The other end of the clamping part opposite to the ridges is an opening and closing end. The clamping part includes a hinge hole for accommodating the hinge shaft of the clamping handle and a hinge shaft inlet and outlet for facilitating the installation and removal of the hinge shaft. Optionally, the distance from the opening and closing end of one clamping part to the ridge is greater than the distance from the opening and closing end of the other clamping part to the ridge. The clamping part with the larger distance is the table-mounting clamping part, and the clamping part with the smaller distance is the rotating clamping part. The table-mounting clamping part is placed on the table, and books and documents can be stacked on top of the table-mounting clamping part. After the rotating clamping part is opened by force, the books and documents are then pushed between the table-mounting clamping part and the rotating clamping part.

[0007] The length of the connecting part is generally no less than 26 mm, distinguishing it from ordinary long-tail clips and highlighting its ability to hold large volumes of books and documents. The so-called bent ridge is a straight line running through the steel sheet, and also an intersection line between the plane of the clip and the plane of the connecting part. The clip is on one plane, and the connecting part is on another. The angle between the clip and the connecting part is the angle between the plane of the clip and the plane of the connecting part. The angles between the table-mounted clip and the connecting part are both less than 90 degrees, preferably 60-80 degrees. The tabletop auxiliary clamping is divided into four stages: attaching the clip, stacking documents, opening the clip, and pushing the documents inward. The distance from the opening end of the table-mounted clip to the bent ridge is greater than the distance from the opening end of the rotating clip to the bent ridge, to ensure that opening the clip does not disrupt the shape of the stacked documents in the stacking stage.

[0008] This solution discloses that the distance from the opening end of the table clamp to the bending ridge is greater than the distance from the opening end of the rotating clamp to the bending ridge. This allows for the placement of materials before opening the clamp, and reduces the difficulty of clamping by adding steps. This facilitates the smooth completion of tabletop auxiliary clamping and optimizes the elastic clamp for clamping large amounts of materials, achieving large-scale clamping and storage. This is the inventive point of this solution.

[0009] Technical benefits: It breaks the inertia of the symmetrical design of the long-tail clip, creates conditions for desktop auxiliary clamping, and facilitates the clamping and storage of thicker documents.

[0010] Technical Solution 2: As a preferred solution to Technical Solution 1, a stacking position indicator hole is drilled in the table clamp to indicate the alignment position of the books and materials.

[0011] Stacking position indicator holes should be small and few, only enough to indicate the placement of books and documents, and should not disrupt the force balance of the table clamp.

[0012] The desktop auxiliary clamp consists of four stages: attaching the clamp, stacking documents, opening the clamp, and pushing the documents inward. If the stacked documents in the stacking stage rely on the opening and closing end of the rotating clamp, the opening stage will damage the stack of documents. The stacking position indicator hole prevents the documents from relying on the opening and closing end of the rotating clamp, which is the inventive point of this solution.

[0013] Technical effect: Prevents damage to stacked books and documents during the opening of the clip, ensuring normal operation of the desktop auxiliary clamp.

[0014] Technical Solution 3: As a preferred embodiment of Technical Solution 1, the hinge hole and hinge shaft inlet / outlet of the rotating clamp are located at the opening and closing end of the rotating clamp, and the hinge hole and hinge shaft inlet / outlet of the table clamp are located in the middle of the table clamp corresponding to the hinge hole and hinge shaft inlet / outlet of the rotating clamp. The distance from the hinge hole of the table clamp and the distance from the hinge hole of the rotating clamp to the bending ridge are equal.

[0015] The hinge hole and hinge shaft inlet / outlet can also be located at the opening / closing end. However, if the hinge hole of the table clamp is too far from the bending ridge, it will easily increase the elastic deformation of the table clamp. Instead of setting the hinge hole of the table clamp at the opening / closing end, it is set in the middle of the table clamp, which reduces the elastic deformation of the table clamp and is beneficial for tabletop auxiliary clamping operation. This is the inventive point of this solution.

[0016] Technical effect: It reduces the elastic deformation of the table clamp, which is beneficial for tabletop auxiliary clamping operation.

[0017] Technical Solution 4: As a preferred option of Technical Solution 3, the hinge holes and hinge shaft inlets and outlets of the table clamp are manufactured through processes such as cutting and molding.

[0018] By making small cuts side by side, the steel sheet is divided into several parts, and then the staggered steel sheet parts are molded to form hinge holes. It is not necessary to mold only two hinge holes; multiple hinge holes can be molded, and the hinge shaft can be installed in multiple hinge holes to obtain better stability.

[0019] Alternatively, a small steel sheet can be connected to the table clamp at both ends through riveting, pasting, or other processes, leaving a hinge hole and hinge shaft inlet / outlet in the middle. The hinge hole and hinge shaft inlet / outlet are formed through cutting and molding, resulting in a stronger connection and smoother transition, which is the inventive point of this solution.

[0020] Technical benefits: The connection between the hinge hole and the table clamp is more secure, the transition is smoother, and production costs are reduced.

[0021] Technical Solution 5: As a preferred embodiment of Technical Solution 1, the opening and closing end of the table clamp also includes a balanced bend that increases the height of the opening and closing end away from the table to achieve a balance between the height of the table clamp and the table.

[0022] The balanced bend can be a small arc bend, a large arc bend, or even a cylindrical shape, or it doesn't have to be perfectly circular, such as a spindle shape. The table clamp rests on the tabletop, with the hinge hole supporting it from the middle. The clamp handle bends towards the bend ridge, supporting the portion near the ridge, while the portion near the opening / closing end is suspended, resulting in poor stability. The opening / closing end of the table clamp includes a balanced bend that increases the height of the opening / closing end above the tabletop, achieving height balance and increasing the stability of the clamp when placed on the table. This is the inventive point of this solution.

[0023] Technical effect: Raising the opening and closing end increases the stability of the table clamp, which is conducive to the smooth operation of the tabletop auxiliary clamp.

[0024] Technical Solution 6: As a preferred embodiment of Technical Solution 1, the angle between the table clamp and the connecting part is greater than the angle between the rotating clamp and the connecting part. An elastic adjustment hole is provided between the rotating clamp and the connecting part to increase the elastic deformation between the rotating clamp and the connecting part.

[0025] The elastic adjustment holes can be circular, square, or elongated. They are arranged along the bend ridge and are located at the connection between the rotating clamp and the connecting part. Reducing the area of ​​the elastic adjustment holes and increasing their number facilitates precise elastic adjustment and is the preferred solution.

[0026] To maintain the stability of the clamp, increasing the angle between the table-mounting clamp and the connecting part is a preferred solution. Increasing the angle between the table-mounting clamp and the connecting part to support tabletop auxiliary clamping requires either increasing the deformation of the connecting portion between the rotating clamp and the connecting part, or increasing the thickness of the connecting portion to relatively reduce its elastic deformation, or drilling a hole in the connecting portion to relatively increase its elastic deformation. Drilling a hole in the connecting portion outside the table-mounting clamp and the connecting part is a relatively simple process and a preferred solution, which is the inventive point of this solution.

[0027] Technical effect: It reduces the elastic deformation of the table clamp, maintains the deformation balance of the clamp under force, and supports desktop auxiliary clamping operation.

[0028] Technical Solution 7: As a preferred embodiment of Technical Solution 6, the included angle between the table clamp and the connecting part is greater than 70 degrees and less than 80 degrees.

[0029] In a book and document clip with application number 202221227904.4, a clip is disclosed, in which the vertical clip is perpendicular to the connecting part, and an elastic adjustment hole is drilled in the elastic connecting ridge between the elastic clip and the connecting part. In the natural state, the opening and closing ends of the two clips are in a close state to solve the problem of upright placement and separation of stacked books and documents.

[0030] While a near-right angle between the table-mounting clamp and the connecting part can reduce deformation of the connecting portion, an excessively large angle causes the hinge holes to protrude outwards when multiple clamps are placed side-by-side, increasing the likelihood of them rubbing against each other. The inventive point of this solution is to achieve an angle between the table-mounting clamp and the connecting part that is greater than 70 degrees and less than 80 degrees, thus balancing reduced rubbing against each other and minimizing deformation.

[0031] Technical benefits: It not only reduces the elastic deformation of the connection between the table clamp and the connecting part, but also reduces the scratching phenomenon when multiple clamps are placed side by side.

[0032] Technical Solution 8: A clamp kit, consisting of two clamps, each clamp being formed by bending a steel wire into a Z-shape, including two vertical handles connected at their top ends and a hinge shaft formed by bending the bottom ends of the two vertical handles to both sides. Optionally, one of the clamps is a table clamp that is hinged to the table clamp, and both vertical handles of the table clamp include stabilizing parts protruding to both sides.

[0033] The joint hole should be aligned with the hinge axis in a straight line. The stabilizing part should not be too close to the hinge axis, as this will cause it to overlap with the elastic clip. It is preferable to place it near the middle of the vertical handle, preferably on the side opposite the hinge axis in the middle of the vertical handle.

[0034] The slender handle, when fitted onto the clamping plate, is prone to tipping over under stress. The invention of this solution lies in incorporating stabilizing parts protruding to both sides on the table-mounted handle, which solves the tipping problem.

[0035] Technical effect: The stabilizing part is set on the vertical handle of the table clamp, which improves the stability of the clamp under force and supports the auxiliary clamping operation on the table.

[0036] Technical Solution 9: As a preferred embodiment of Technical Solution 8, the middle part of the two vertical handles of the clamp includes abutting bends that abut against each other. By means of the mutual abutting of the abutting bends, the difficulty of the hinge shaft ends of the two vertical handles coming closer together elastically can be increased.

[0037] As the length of the clamp handle increases, the hinged ends of the vertical handles tend to elastically approach each other, or even detach from the hinged holes of the elastic clamping pieces. The invention of this solution lies in setting opposing abutment bends in the middle of the two vertical handles to increase the difficulty of the hinged ends of the two vertical handles elastically approaching each other.

[0038] Beneficial effect: It increases the difficulty of the hinge ends of the two vertical handles coming together elastically, laying the foundation for increasing the length of the clamp handle.

[0039] Technical Solution 10: A steel sheet clamp, comprising an elastic clamp and two clamp handles hinged to the elastic clamp, optionally, the elastic clamp is the elastic clamp as described in claim 1, 2, 3, 4, 5, 6 or 7, the two clamp handles are the clamp handle kit as described in claim 8 or 9, and the hinge shaft of the table-attaching clamp handle is hinged to the hinge hole of the table-attaching clamp portion.

[0040] The utilization rate of student desk drawers has always been low. For drawers that cannot be stood upright, the idle rate is also high, partly due to the inconvenience of finding items. Steel clips solve the problem of holding and storing large amounts of materials, effectively supporting the categorization of study materials by subject. Although it doesn't change the limited space constraints of the desk drawer, it reduces the number of items to be categorized from dozens to just a few, improving search efficiency. This increased search efficiency also reduces the idle rate of the drawers. For professional upright desk drawers, such as the type of desk with application number 202220719170.5, the steel clips allow study materials to be categorized by subject and placed upright within the drawer, facilitating not only retrieval but also easy access. This effectively supports the operation of opening and closing the drawer with one hand while simultaneously retrieving books, significantly increasing the value of the drawer and the flip-top desk.

[0041] Technical benefits: It adapts to the practical needs of large-capacity storage of learning materials and desktop auxiliary clamping, improves the efficiency of finding and retrieving learning materials, and puts the concept of subject-based collection of learning materials into practice. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the elastic clip (back side). Figure 2 This is a schematic diagram of the elastic clip (front view). Figure 3 Schematic diagram of elastic clips with the same bending angle Figure 4 This is a diagram of the table clamp handle. Figure 5 This is a schematic diagram of a steel clip. 1 is an elastic clip, 2 is a table-mounting clip, and 3 is an elastic clip.

[0043] 10 Balanced bending, 11 Bending ridge, 12 Connecting part, 13 Table clamping part, 14 Rotating clamping part, 15 Opening and closing end, 16 Hinge hole, 17 Hinge shaft inlet and outlet, 18 Stacking position indicator hole, 19 Elastic adjustment hole.

[0044] 21 is the vertical handle, 22 is the hinge shaft, 23 is the stabilizing part, and 24 is the abutment bend. Implementation

[0045] Example 1: Figure 1-2As shown, an elastic clip 1 is formed by bending a rectangular steel sheet along two parallel ridges 11 facing each other. Between the two ridges is a connecting part 12, and outside the two ridges is a clamping part. The other end of the clamping part opposite to the ridges 11 is an opening end 15. The opening end 15 includes a hinge hole 16 for accommodating the hinge shaft of the clamp handle and a hinge shaft inlet / outlet 17 for facilitating the installation and removal of the hinge shaft of the clamp handle. The distance from the opening end 15 of one clamping part to the ridge 11 is greater than the distance from the opening end 15 of the other clamping part to the ridge 11. The clamping part with a larger distance is the table-mounting clamping part 13, and the clamping part with a smaller distance is the rotating clamping part 14. The table-mounting clamping part 13 is placed on the table, and books and documents can be placed on the table-mounting clamping part 13. After the rotating clamping part 14 is opened by force, the books and documents are then pushed between the table-mounting clamping part 13 and the rotating clamping part 14. In this example, the angle between the table-mounting clamp 13 and the connecting part 12 is 80 degrees, the angle between the rotating clamp 14 and the connecting part 12 is 60 degrees, the distance between the two bent ridges 11 is 35 cm, the distance from the bent ridge 11 of the table-mounting clamp 13 to the opening / closing end 15 is 70 cm, and the distance from the bent ridge 11 of the rotating clamp 14 to the opening / closing end 15 is 40 cm. Other specifications are also possible, especially larger sizes, and the angles can also be different.

[0046] Stacking position indicator holes 18 are drilled in the table clamping part 13 to indicate the alignment position of the books and documents. The hinge hole 16 and hinge shaft inlet / outlet 17 of the rotating clamping part 14 are located at the opening / closing end 15 of the rotating clamping part 14. The hinge hole 16 and hinge shaft inlet / outlet 17 of the table clamping part 13 are located in the middle of the table clamping part 13, corresponding to the hinge hole 16 and hinge shaft inlet / outlet 16 of the rotating clamping part 14. The distances from the hinge hole 16 of the table clamping part 13 and from the hinge hole 16 of the rotating clamping part 14 to the bending ridge 11 are equal. The hinge hole 16 and hinge shaft inlet / outlet 17 of the table clamping part 13 are manufactured through processes such as cutting and molding. In this example, the stacking position indicator hole 18 and the hinge hole 16 are combined into one; the front side is the stacking position indicator hole 18, and the cut is molded into the hinge hole 16. An elastic adjustment hole 19 is provided between the rotating clamp 14 and the connecting part 12 to increase the elastic deformation between the rotating clamp 14 and the connecting part 12, so that when the clamp is opened under force, the included angle between the table-attaching clamp 13 and the rotating clamp 14 and the connecting part 12 is the same. The opening and closing end 15 of the table-attaching clamp 13 also includes a balancing bend 10 to increase the height of the opening and closing end 15 away from the table to achieve the balance of the height of the table-attaching clamp 13 away from the table. In this example, the balancing bend 10 is cylindrical.

[0047] Example 2: Figure 3As shown, an elastic clip 1 is formed by bending a rectangular steel sheet along two parallel ridges 11 facing each other. Between the two ridges is a connecting part 12, and outside the two ridges is a clamping part. The other end of the clamping part opposite to the ridges 11 is an opening end 15. The opening end 15 includes a hinge hole 16 for accommodating the hinge shaft of the clamp handle and a hinge shaft inlet / outlet 17 for facilitating the installation and removal of the hinge shaft of the clamp handle. The distance from the opening end 15 of one clamping part to the ridge 11 is greater than the distance from the opening end 15 of the other clamping part to the ridge 11. The clamping part with a larger distance is the table-mounting clamping part 13, and the clamping part with a smaller distance is the rotating clamping part 14. The table-mounting clamping part 13 is placed on the table, and books and documents can be placed on the table-mounting clamping part 13. After the rotating clamping part 14 is opened by force, the books and documents are then pushed between the table-mounting clamping part 13 and the rotating clamping part 14. In this example, the angle between the table-mounting clamp 13 and the connecting part 12 is 68 degrees, and the angle between the rotating clamp 14 and the connecting part 12 is also 68 degrees. The distance between the two bent ridges 11 is 35 cm, the distance from the bent ridge 11 of the table-mounting clamp 13 to the opening end 15 is 80 cm, and the distance from the bent ridge 11 of the rotating clamp 14 to the opening end 15 is 40 cm. Other larger sizes and different angles are also possible.

[0048] The hinge hole 16 and hinge shaft inlet / outlet 17 of the rotating clamp 14 are located at the opening / closing end 15 of the rotating clamp 14. The hinge hole 16 and hinge shaft inlet / outlet 17 of the table clamp 13 are located in the middle of the table clamp 13, corresponding to the hinge hole 16 and hinge shaft inlet / outlet 16 of the rotating clamp 14. The distances from the hinge hole 16 of the table clamp 13 and from the hinge hole 16 of the rotating clamp 14 to the bending ridge 11 are equal. The hinge hole 16 and hinge shaft inlet / outlet 17 of the table clamp 13 are manufactured through processes such as cutting and molding. In this example, the stacking position indicator hole 18 and the hinge hole 16 are combined into one. The front side is the stacking position indicator hole 18, and the cut is molded into the hinge hole 16.

[0049] The opening and closing end 15 of the table clamp 13 also includes a balancing bend 10 that increases the height of the opening and closing end 15 away from the table to achieve a balance between the height of the table clamp 13 and the table. In this example, the balancing bend is cylindrical.

[0050] Example 3: such as Figure 4 As shown: A clamp kit consists of two clamps, each clamp being formed by bending a steel wire into a Z-shape. Each clamp includes two vertical handles 21 whose top ends are connected to each other, and a hinge shaft 22 formed by bending the bottom ends of the two vertical handles 21 to both sides. One clamp is a table-mounting clamp 2 hinged to a table-mounting clamp 13. Both vertical handles 21 of the table-mounting clamp 2 include stabilizing portions 23 protruding to both sides. The other clamp is a flexible clamp 3.

[0051] The middle of the two vertical handles 21 of the clamp includes abutting bends 24 that abut against each other. By means of the mutual abutting of the abutting bends 24, the difficulty of the hinge shafts 22 ends of the two vertical handles 21 elastically approaching each other can be increased.

[0052] Example 4: Figure 5 As shown: A steel clip includes an elastic clip and two handles hinged to the elastic clip. Optionally, the elastic clip is the elastic clip 1 as described in claims 1, 2, 3, 4, 5, 6, or 7, and the two handles are the handle assembly as described in claim 8 or 9. The hinge shaft 21 of the table-mounting handle 2 is hinged to the hinge hole 16 of the table-mounting clamping part 13. The elastic handle 3 is hinged to the opening and closing end 15 of the rotating clamping part 14.

Claims

1. An elastic clip, which is formed by bending a rectangular steel sheet along two parallel bending ridges on the same side, wherein a connecting part is between the two bending ridges, a clamping part is outside the two bending ridges, and the other end of the clamping part opposite to the bending ridges is a clamping end, the clamping part comprises a hinge hole for accommodating a hinge shaft of a clamping handle and a hinge shaft inlet and outlet for facilitating disassembly of the hinge shaft of the clamping handle, characterized in that: The distance from the opening end of one of the clamping parts to the bending ridge is greater than the distance from the opening end of the other clamping part to the bending ridge, the clamping part with the greater distance is the table-attached clamping part, and the clamping part with the smaller distance is the rotating clamping part, the table-attached clamping part is attached to the table top, and books can be placed on the table-attached clamping part, and the books can be pushed into the space between the table-attached clamping part and the rotating clamping part after the rotating clamping part is opened by force. ​ 2. The resilient clip of claim 1, wherein: A stacking position indicating hole is formed in the table-attached clamping part, and the stacking position indicating hole indicates the stacking position of the books.

3. The resilient clip of claim 1, wherein: The hinge hole and the hinge shaft inlet and outlet of the table-attached clamping part are arranged in the middle of the table-attached clamping part, and the hinge hole and the hinge shaft inlet and outlet of the rotating clamping part are arranged in the opening end of the rotating clamping part, and the distance from the hinge hole of the table-attached clamping part to the bending ridge is equal to the distance from the hinge hole of the rotating clamping part to the bending ridge.

4. The resilient clip of claim 3, wherein: The hinge hole and the hinge shaft inlet and outlet of the table-attached clamping part are formed by cutting or molding.

5. The resilient clip of claim 1, wherein: A balance bending is arranged in the opening end of the table-attached clamping part to increase the height of the opening end of the table-attached clamping part from the table top, and the height of the table-attached clamping part from the table top is balanced.

6. The resilient clip of claim 1, wherein: The angle between the table-attached clamping part and the connecting part is greater than the angle between the rotating clamping part and the connecting part, and an elastic adjusting hole is arranged between the rotating clamping part and the connecting part to increase the elastic deformation between the rotating clamping part and the connecting part.

7. The resilient clip of claim 6, wherein: The angle between the table-attached clamping part and the connecting part is greater than 70 degrees and less than 80 degrees.

8. A clamping handle set, which comprises two clamping handles, each of which is formed by bending a steel wire into a U shape, and comprises two vertical handles whose top ends are connected to each other and a hinge shaft which is formed by bending the bottom ends of the two vertical handles to the sides, characterized in that one of the clamping handles is a table-attached clamping handle which is hingedly connected to the table-attached clamping part, and the two vertical handles of the table-attached clamping handle each comprise a protruding stabilizing part.

9. The handle assembly of claim 8, wherein: The middle part of each of the two vertical handles of the clamping handle comprises a butt joint bend, and the butt joint bends of the two vertical handles abut against each other, which increases the difficulty of elastic close of the hinge shaft ends of the two vertical handles.

10. A steel sheet clip comprising a resilient clip blade and two clip handles hinged to said resilient clip blade, characterized in that: The elastic clamping piece is the elastic clamping piece of claim 1, 2, 3, 4, 5, 6 or 7, the two clamping handles are the clamping handle set of claim 8 or 9, and the hinge shaft of the table-attached clamping handle is hingedly connected to the hinge hole of the table-attached clamping part.

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