Drawing rod clamp

Abstract

The invention discloses a rod drawing clamp, and relates to the field of stationery, and the rod drawing clamp is characterized by comprising two clamping pieces and a connecting piece, the connecting piece and the clamping pieces are integrally formed, the connecting piece is located between the two clamping pieces, one end, far away from the connecting piece, of each clamping piece is rotatably connected with a rotating rod, and the rotating rod is located on one side, far away from the other clamping piece, of each clamping piece; the length direction of the rotating rod is the same as the length direction of the clamping piece, a protruding block is integrally formed on the circumferential wall of the rotating rod, and a through groove allowing the protruding block to pass through is formed in the clamping piece. On one hand, the distance between the protruding blocks between the adjacent rotating rods is smaller than the distance between the hoop rings, the pressure on paper is increased, then the friction force between the drawing rod clamp and the paper is increased, on the other hand, the multiple protruding blocks form a tooth-shaped structure in the length direction of the rotating rods, the small contact area increases the intensity of pressure exerted by the protruding blocks on the paper, and the paper drawing effect is improved. The paper is forced to sink, the roughness of the contact face of the paper and the drawing rod clamp is increased, the friction force between the drawing rod clamp and the paper is further increased, and the paper is prevented from falling off.

Description

Technical Field

[0001] The invention relates to the field of stationery, and more particularly to a draw-rod clip. Background Art

[0002] A pull-out clamp is an office tool used for organizing and classifying documents, materials and other items. The papers that need to be classified are neatly stacked, and all the papers are clamped together from one side by the pull-out clamp to ensure that the papers are gathered together in an orderly manner, thereby reducing loss and facilitating search. At the same time, using the pull-out clamp to organize the papers makes it convenient and quick to take samples of paper or insert new paper later.

[0003] The cross-section of the existing draw rod clamp is generally triangular, with an opening at one corner of the triangle. When paper is inserted into the draw rod clamp from the open side, the draw rod clamp undergoes elastic deformation, squeezing the paper and hindering the movement of the paper through friction. However, the existing draw rod clamp cannot exert sufficient pressure on the paper when the amount of paper is small, thereby reducing the friction and causing the paper to fall off easily.

[0004] Therefore, a new solution needs to be proposed to solve this problem. Summary of the invention

[0005] In view of the deficiencies in the prior art, an object of the present invention is to provide a rod drawer clamp.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: a pull-out rod clamp, comprising two clips and a connecting piece, the connecting piece and the clip are integrally formed, the connecting piece is located between the two clips, the end of the clip away from the connecting piece is rotatably connected to a rotating rod, the rotating rod is located on the side of the clip away from the other clip, the length direction of the rotating rod is the same as the length direction of the clip, a protrusion is integrally formed on the peripheral wall of the rotating rod, and the clip is provided with a through groove for the protrusion to pass through.

[0007] The present invention is further configured as follows: a hoop is integrally formed at the end of the clip, an opening is provided on the side of the hoop close to the connecting plate, the rotating rod is movably connected in the hoop, the hoop is in an arc shape, and a plurality of spacing grooves corresponding to the through grooves are provided on the hoop, and the spacing grooves are spaced apart along the length direction of the hoop.

[0008] The present invention is further configured as follows: one end of the rotating rod is fixedly connected with a rotating block, the two rotating blocks are respectively located on both sides of the hoop, and the cross-sectional area of ​​the rotating block is larger than the cross-sectional area of ​​the rotating rod.

[0009] The present invention is further configured as follows: one end of the rotating rod away from the rotating block is fixedly connected to a limiting ball joint, the diameter of the limiting ball joint is larger than the inner diameter of the hoop, and the limiting ball joint is made of elastic material.

[0010] The present invention is further configured such that: an end of the projection away from the rotating rod is fixedly connected to an elastic block.

[0011] The present invention is further configured as follows: the connecting sheet is composed of two fixing sheets and one elastic sheet, the fixing sheet and the elastic sheet are both arc-shaped, the opening directions of the fixing sheet and the elastic sheet are opposite, and the opening of the elastic sheet faces the side away from the rotating rod.

[0012] The present invention is further configured as follows: the elastic sheet is made of a mixed material of TPE and PE and PVA is used as a toughening agent.

[0013] The present invention is further configured such that: the clip and the fixing sheet are both made of PE material.

[0014] In summary, the present invention has the following beneficial effects: on the one hand, the spacing between the protrusions between adjacent rotating rods is smaller than the spacing between the hoop rings, which increases the pressure on the paper and further increases the friction between the draw rod clamp and the paper; on the other hand, a plurality of protrusions form a toothed structure along the length direction of the rotating rod, and the smaller contact area increases the pressure applied by the protrusions on the paper, forcing the paper to be dented, increasing the roughness of the contact surface between the paper and the draw rod clamp, and further increasing the friction between the draw rod clamp and the paper to prevent the paper from falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 for Figure 1 The enlarged view of point A in the middle; Figure 3 It is a partial cross-sectional view of the present invention.

[0016] In the figure: 1, clip; 2, rotating rod; 3, convex block; 4, through groove; 5, hoop; 6, opening; 7, spacing groove; 8, rotating block; 9, limiting ball joint; 10, elastic block; 11, fixed plate; 12, elastic plate. DETAILED DESCRIPTION

[0017] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments.

[0018] Embodiment: A draw rod clamp, such as Figure 1 , Figure 2 , Figure 3As shown, it includes two clips 1 and a connecting piece, the connecting piece and the clip 1 are integrally formed, the connecting piece is located between the two clips 1, the end of the clip 1 away from the connecting piece is rotatably connected with a rotating rod 2, the rotating rod 2 is located on the side of the clip 1 away from the other clip 1, the length direction of the rotating rod 2 is the same as the length direction of the clip 1, a protrusion 3 is integrally formed on the peripheral wall of the rotating rod 2, the clip 1 is provided with a through groove 4 for the protrusion 3 to pass through, a hoop 5 is integrally formed at the end of the clip 1, and an opening 6 is provided on the side of the hoop 5 close to the connecting piece, the rotating rod 2 is movably connected in the hoop 5, the hoop 5 is in an arc shape, and a plurality of spacing grooves 7 corresponding to the through grooves 4 are provided on the hoop 5, and the spacing grooves 7 are arranged at intervals along the length direction of the hoop 5.

[0019] Specifically, the clip 1, the connecting piece, and the hoop 5 are integrally formed, the straight rod and the protrusion 3 are integrally formed, the width of the spacing groove 7 is equal to the width of the through groove 4, when installing the straight rod, the side wall of the protrusion 3 is made to fit the side wall of the clip 1, and then the rotating rod 2 is inserted into the hoop 5. During the insertion of the rotating rod 2, the protrusion 3 slides through the opening 6, and finally each protrusion 3 is located in the corresponding spacing groove 7. When it is necessary to extract paper, the arc-shaped hoop 5 increases the contact area between the extraction rod clamp and the paper due to the arc surface on the outer side, reduces the pressure, and avoids scratches on the surface of the paper. When clamping a small amount of paper, the rotating rod 2 is rotated to rotate the protrusion 3 between the rotating rod 2 and the paper. On the one hand, the spacing between the protrusions 3 between adjacent rotating rods 2 is smaller than the spacing between the hoop 5. The distance between the rotating rod 2 and the drawing rod clamp increases the pressure on the paper, thereby increasing the friction between the drawing rod clamp and the paper. On the other hand, a plurality of protrusions 3 form a toothed structure along the length direction of the rotating rod 2. The smaller contact area increases the pressure exerted by the protrusions 3 on the paper, forcing the paper to be dented, increasing the roughness of the contact surface between the paper and the drawing rod clamp, thereby further increasing the friction between the drawing rod clamp and the paper. At the same time, the protrusions 3 arranged at intervals are in the form of point contact, so that no matter whether the paper has a tendency to move along the length direction of the rotating rod 2 or has a tendency to move perpendicular to the length direction of the rotating rod 2, the resistance in the corresponding direction can be increased to prevent the paper from falling off. When it is necessary to take out the paper, the rotating rod 2 is rotated so that the protrusions 3 no longer contact the paper, thereby reducing the friction to take out the paper.

[0020] like Figure 1 , Figure 2 , Figure 3As shown, one end of the rotating rod 2 is fixedly connected with a rotating block 8, and the two rotating blocks 8 are respectively located on both sides of the hoop 5. The cross-sectional area of ​​the rotating block 8 is larger than the cross-sectional area of ​​the rotating rod 2. Specifically, the rotating block 8 and the rotating rod 2 are integrally formed, and the cross-section of the rotating block 8 is octagonal. The rotating rod 2 and the rotating block 8 are both made of stainless steel, which ensures the surface strength and service life of the straight rod and the rotating block 8. The rotating block 8 is located outside the hoop 5, so the rotating block 8 provides a force point for rotating the rotating rod 2, which is convenient for the user to rotate the rotating rod 2. The rotating block 8 located on one side of the rotating rod 2 will not affect the insertion of the rotating rod 2 into the hoop 5. The two rotating rods 2 are inserted into the hoop 5 in reverse, so that the two rotating blocks 8 are respectively located on both sides of the hoop 5, avoiding interference between the two rotating blocks 8 when rotating the rotating blocks 8.

[0021] like Figure 1 , Figure 2 As shown, one end of the rotating rod 2 away from the rotating block 8 is fixedly connected to a limiting ball joint 9, the diameter of the limiting ball joint 9 is larger than the inner diameter of the hoop 5, the limiting ball joint 9 is made of elastic material, specifically, the limiting ball joint 9 is made of rubber, and the limiting ball joint 9 is bonded to the rotating rod 2. When the rotating rod 2 is inserted into the hoop 5, the limiting ball joint 9 is elastically deformed and passes through the hoop 5. When the rotating rod 2 is fully inserted into the hoop 5, the limiting ball joint 9 is located outside the hoop 5. At this time, the limiting ball joint 9 prevents the rotating rod 2 from sliding in the hoop 5, thereby preventing the rotating rod 2 from falling off.

[0022] like Figure 1 , Figure 2 As shown, the end of the protrusion 3 away from the rotating rod 2 is fixedly connected with an elastic block 10. Specifically, the end of the protrusion 3 away from the rotating rod 2 is bonded with the elastic block 10. The elastic block 10 is made of rubber. The cross-section of the elastic block 10 is an isosceles trapezoid, and the side surfaces corresponding to the two waists of the isosceles trapezoid are arc-shaped outwards. When the protrusion 3 squeezes the paper, the elastic block 10 undergoes elastic deformation to serve as a buffer to prevent the protrusion 3 from scratching the paper during rotation.

[0023] like Figure 1 , Figure 2As shown, the connecting piece is composed of two fixing pieces 11 and an elastic piece 12. The fixing piece 11 and the elastic piece 12 are both arc-shaped. The openings 6 of the fixing piece 11 and the elastic piece 12 are in opposite directions. The opening 6 of the elastic piece 12 faces the side away from the rotating rod 2. The elastic piece 12 is made of TPE and PE mixed material and PVA is used as a toughening agent. The clip 1 and the fixing piece 11 are made of PE material. Specifically, the thickness of the connecting piece, the fixing piece 11, the clip 1, and the hoop 5 is the same and at least 2 mm, ensuring The strength of the draw rod clamp makes the bending direction of the elastic sheet 12 conform to the deformation direction of the elastic sheet 12 when the clips 1 are away from each other, so that the deformation is more easily concentrated on the elastic sheet 12, avoiding the deformation concentrated on the bending part formed by the clip 1 and the fixing sheet 11, which leads to the damage of the draw rod clamp. The hoop 5, the clip 1, and the fixing sheet 11 are cast once, and the elastic sheet 12 is cast twice and connected with the fixing sheet 11 by hot melting. The edges of the elastic sheet 12, the clip 1, the hoop 5, and the fixing sheet 11 near the paper are The arc transition further avoids scratching the paper. Through multiple casting and molding techniques, the materials of the fixing plate 11, the clamping plate 1 and the elastic plate 12 are different. In this embodiment, the clamping plate 1, the fixing plate 11 and the hoop 5 are cast and molded by PE material at a temperature of 200°C, and the raw materials are first irradiated and cross-linked before molding to improve the physical properties of the PE material, improve the rigidity of the clamping plate 1, the fixing plate 11 and the hoop 5, and ensure the service life of the withdrawal rod clamp. The elastic plate 12 is cast and molded by PVA material, PE material and TPE material at a temperature of 225°C-240°C, wherein the proportion of TPE material is at least one third of the PE material. In this embodiment, the ratio of TPE material to PE material is 2:5. The mixing of TPE material with PVA toughening agent improves the toughness and elasticity of PE material, further improving the pressure applied by the withdrawal rod clamp to the paper. The elastic plate 12 and the fixing plate 11 are mainly made of PE material, which ensures the connection strength of the two when they are melt-connected.

[0024] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A rod clamp, characterized in that: The invention comprises two clips (1) and a connecting piece, wherein the connecting piece and the clip (1) are integrally formed, the connecting piece is located between the two clips (1), one end of the clip (1) away from the connecting piece is rotatably connected to a rotating rod (2), the rotating rod (2) is located on a side of the clip (1) away from the other clip (1), the length direction of the rotating rod (2) is the same as the length direction of the clip (1), a convex block (3) is integrally formed on the peripheral wall of the rotating rod (2), and a through groove (4) for the convex block (3) to pass through is provided on the clip (1).

2. The rod clamp according to claim 1, characterized in that: A hoop (5) is integrally formed at the end of the clamping piece (1), an opening (6) is provided on a side of the hoop (5) close to the connecting piece, the rotating rod (2) is movably connected in the hoop (5), the hoop (5) is in an arc shape, a plurality of spacing grooves (7) corresponding to the through groove (4) are provided on the hoop (5), and the spacing grooves (7) are arranged at intervals along the length direction of the hoop (5).

3. The rod clamp according to claim 2, characterized in that: One end of the rotating rod (2) is fixedly connected to a rotating block (8), and the two rotating blocks (8) are respectively located on both sides of the hoop (5), and the cross-sectional area of ​​the rotating block (8) is larger than the cross-sectional area of ​​the rotating rod (2).

4. The rod drawer clamp according to claim 3, characterized in that: One end of the rotating rod (2) away from the rotating block (8) is fixedly connected to a limiting ball joint (9); the diameter of the limiting ball joint (9) is larger than the inner diameter of the hoop (5); and the limiting ball joint (9) is made of elastic material.

5. The rod clamp according to claim 4, characterized in that: An elastic block (10) is fixedly connected to one end of the protrusion (3) away from the rotating rod (2).

6. The rod drawer clamp according to claim 5, characterized in that: The connecting piece is composed of two fixing pieces (11) and one elastic piece (12); the fixing piece (11) and the elastic piece (12) are both arc-shaped; the openings (6) of the fixing piece (11) and the elastic piece (12) are in opposite directions; the opening (6) of the elastic piece (12) faces a side away from the rotating rod (2).

7. The rod drawer clamp according to claim 6, characterized in that: The elastic sheet (12) is made of a mixed material of TPE and PE and uses PVA as a toughening agent.

8. The rod clamp according to claim 7, characterized in that: The clip (1) and the fixing plate (11) are both made of PE material.

Images