A new type of labor-saving long tail clip

Abstract

The invention discloses a novel labor-saving long-tail clip, comprising a clip body and a handle, wherein the clip body comprises a supporting bottom plate and two clamping side plates on both sides, wherein the two clamping side plates are arranged inwardly from the supporting bottom plate to form a clamping end, and the handle is arranged at a length position of 1 / 5 to 4 / 5 of the clamping side plate. A reinforcing rib is longitudinally arranged on the upper inclined surface of the holding side plate, and the reinforcing rib is integrally formed with the clamping side plate, and a longitudinal protrusion or a longitudinal groove is formed by cutting, stamping and stretching the clamping side plate. A handle mounting position is arranged on the clamping side plate, and the handle mounting position comprises a handle mounting sleeve, and a handle mounting hole is arranged in the handle mounting sleeve. The handle mounting position takes the inclined surface of the clamping side plate as the central axis reference. The handle mounting sleeve is a convex wrapping surface and / or a groove wrapping surface formed by cutting, stamping and stretching the clamping side plate. The invention has a longer force arm when applying force to the handle of the long-tail clip, and the long-tail clip that requires the same force to be opened has a longer force arm, and the smaller the force applied to the handle, the more labor-saving and comfortable it is when used.

Description

Technical Field

[0001] The invention relates to a binder clip device, more particularly to a new type of binder clip which saves more labor and raw materials. Background Art

[0002] The existing binder clip design has the following disadvantages:

[0003] 1) It is quite laborious to use, not light and comfortable enough, and the fingers feel painful when pressing the handle;

[0004] 2) During the manufacturing process, since the entire clamp body of the existing design is formed by bending a piece of iron sheet, the clamp body has insufficient support strength, and the deformation ratio after heat treatment is high, resulting in a certain scrap rate;

[0005] 3) In the existing design, in actual production, during the paint spraying process, since there are two round tubes for mounting handles at the front end of the clamp, the contact point between the round tube and the inclined surface of the clamp body needs to be repeatedly sprayed with paint, resulting in serious waste of paint raw materials.

[0006] 4) In the existing design, due to the presence of two round tubes for mounting handles at the front end of the clamp, the amount of steel used in a single clamp body is 25% more than that of the new type (taking the No. 3 national standard clamp as an example). Summary of the invention

[0007] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a new type of binder clip that is more labor-saving and saves raw materials.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a new type of labor-saving long tail clip, comprising a clip body and a handle, the clip body comprising a supporting bottom plate and two clamping side plates on both sides, the two clamping side plates are inclined inwardly from the supporting bottom plate to form a clamping end, and the handle is arranged at 1 / 5 to 4 / 5 of the length of the clamping side plate.

[0009] Preferably, reinforcing ribs are longitudinally arranged on the upper inclined surface of the clamping side plate.

[0010] Preferably, the reinforcing ribs are integrally formed with the clamping side plates, and the longitudinal protrusions or longitudinal grooves are formed by cutting, stamping, and stretching the clamping side plates.

[0011] Preferably, a handle mounting position is arranged on the clamping side plate, and the handle mounting position comprises a handle mounting sleeve, and a handle mounting hole is arranged in the handle mounting sleeve.

[0012] Preferably, the handle installation position uses the inclined surface of the clamping side plate as the central axis reference.

[0013] Preferably, the handle mounting sleeve is a raised wrapping surface and / or a grooved wrapping surface formed by cutting, stamping, and stretching the clamping side panels.

[0014] Preferably, a handle mounting hole is provided on the reinforcing rib.

[0015] Technical effects and advantages of the present invention:

[0016] 1. Compared with the existing solution, the lever arm of the handle is lengthened by adjusting the position of the handle fixing point.

[0017] The installation position of the handle is moved to a position of one fifth to four fifths of the inclined surface of the clamping side plate. The installation position of the handle is closer to the supporting base plate than the prior art. The connecting edge of the supporting base plate and the clamping side plate is used as a fulcrum, so that when a force is applied to the handle of the binder clip, the force arm is longer. The binder clip that requires the same force to open has a longer force arm, and the force that needs to be applied to the handle is smaller, that is, the binder clip of the present invention is more labor-saving and comfortable to use.

[0018] 2. There is no need to install a handle on the top of the clamping end, so the round tube for installing the handle is omitted, the area of ​​the clamping steel belt is reduced, and raw materials are saved; and the process steps of repeatedly spraying paint on the round tube are omitted, which reduces paint waste and reduces manufacturing costs;

[0019] 3. By adjusting the position of the handle fixing point to the position of one-fifth to four-fifths of the inclined surface of the clamping side plate, the supporting strength of the clamping body is enhanced, the deformation ratio of the clamping side plate is reduced, and the yield rate is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The structure of the prior art long tail clip is shown in FIG. Figure 1 ;

[0021] Figure 2 for Figure 1 Left view of;

[0022] Figure 3 The structure of the prior art long tail clip is shown in FIG. Figure 2 ;

[0023] Figure 4 The structure of the clamp body of the labor-saving long tail clip of the present invention is shown in FIG. Figure 1 ;

[0024] Figure 5 The structure of the clamp body of the labor-saving long tail clip of the present invention is shown in FIG. Figure 2 ;

[0025] Figure 6 The structure of the labor-saving tail clip of the present invention is shown in FIG. Figure 3 ;

[0026] Figure 7 The structure of the clamp body of the labor-saving long tail clip of the present invention is shown in FIG. Figure 4 ;

[0027] Figure 8It is an expanded view of the clamp body of the prior art binder clip;

[0028] Fig. 9 This is an expanded view of the clamp body of the labor-saving binder clip of the present invention;

[0029] The accompanying drawings are marked as follows: 1-including the clamping body, 2-handle, 11-supporting bottom plate, 12-clamping side plate, 13-clamping end 13, 14-handle mounting hole, 15-arc-shaped groove, 16-convex wrapping surface, 17-groove wrapping surface, 18-reinforcement rib. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] As attached Figures 1 to 3 As shown in FIG. 1 , it is a schematic diagram of the structure of the prior art long tail clip. The handle is installed at the top of the triangle of the clip body 1. The handle 2 is turned over. The fulcrum of the handle 2 is at the connecting edge of the supporting bottom plate 11 and the clamping side plate 12. Figure 3 As shown, L1 is set as the force arm and F is the force. Assuming the clamping torque of the clamp is M (a fixed value can be regarded as a fixed value for a certain model of clamp), F = M / L1. From this formula, it can be obtained that the larger L1 is, the smaller F is, that is, the more effort is saved.

[0032] like Figures 4 to 7 As shown, the technical solution of the new type of labor-saving long tail clip of the present invention includes a clamp body 1 and a handle 2. The clamp body 1 includes a supporting base plate 11 and two clamping side plates 12 on both sides. The two clamping side plates 12 are inclined inwardly from the supporting base plate 11 to form a clamping end 13. The handle 2 is set at 1 / 2 the length of the clamping side plate 12. Compared with the existing solution, the force arm of the handle is lengthened by adjusting the position of the fixed point of the handle 2. Taking the No. 3 national standard long tail clip as an example, the force to open the clip is recorded, and the test data is summarized as shown in Table 1.3. Comparison table of the force at the end of the handle of the national standard long tail clip:

[0033] Table 1. Comparison of the force applied to the handle end of the No. 3 national standard long tail clip

[0034]

[0035]

[0036] The data collection of the new model No. 3 national standard clamp in Table 1 is based on the handle 2 of the present invention being moved to the clamping side plate 12, the two clamping side plates 12 being tilted inwardly by the supporting bottom plate 11 to form a clamping end 13, and the handle 2 being set at the middle position of 1 / 2 of the clamping side plate 12.

[0037] According to theoretical calculations, when the handle 2 is moved to the middle position of the clamping side plate 12, the force arm of the end of the handle 2 relative to the fulcrum is extended by one quarter, and the force should be only two-thirds of the original. Comparing the test data in Table 1, it is found that the theory and practice are completely consistent, and the binder clip of the present invention is more labor-saving and comfortable to use.

[0038] The new labor-saving long tail clip of the present invention does not need to install the handle 2 on the top of the clamping end 13, so the round tube for installing the handle 2 is omitted. Figure 8 As shown, it is an expanded view of the prior art long tail clip body. Fig. 9 This is an expanded view of the new labor-saving long tail clip body of the present invention. Taking the national standard No. 3 clip as an example, the dimensions of each expanded view are marked as shown in the figure. Comparative calculation shows that the material consumption of the old model No. 3 national standard clip in the prior art is 2080 square millimeters of steel, and the new labor-saving long tail clip of the present invention requires 1568 square millimeters of steel. The steel consumption of the new labor-saving long tail clip of the present invention is 75.4% of the steel consumption of the old model No. 3 national standard clip in the prior art, which greatly saves steel and reduces costs, and eliminates the process steps of repeatedly spraying paint on round tubes, reduces paint waste, and reduces manufacturing costs.

[0039] There are three specific implementation schemes for implementing the present invention: 1. Based on the clamping side plate 12, the whole is concave to form a handle mounting hole 14; 2. Based on the clamping side plate 12, part of it is concave, and part of it is convex to form a handle mounting hole 14; 3. Based on the clamping side plate 12, the whole is convex to form a handle mounting hole 14. The following is a description of the three scheme structures respectively in conjunction with the schematic diagrams.

[0040] like Figure 4 As shown, a preferred embodiment of the present invention is firstly performed on each side clamping side plate 12 by left-right symmetrical cutting, the middle cutting module is punched and stretched to form an inwardly concave arc groove 15, the two parts of the cutting modules on both sides are stretched upward to form an upwardly protruding semicircular convex wrapping surface 16, the cutting module between the two convex wrapping surfaces 16 on each side is punched and stretched inward to form a semicircular groove wrapping surface 17, the alternately arranged arc grooves 15, semicircular convex wrapping surfaces 16 and semicircular groove wrapping surfaces 17 together form a handle mounting sleeve, and the handle mounting sleeve forms a hollow handle mounting hole 14 for mounting the handle.

[0041] like Figure 5 As shown, another preferred embodiment of the present invention is Figure 4 compared to, Figure 5 The cutting module between the two raised wrapping surfaces 16 on each side is punched inward to form a reinforcing rib 18 that is longitudinally concave and conforms to the clamping side plate. The handle mounting hole 14 passes through the reinforcing rib 18, so that the reinforcing rib 18 also serves as the lower bottom surface of the fixed handle.

[0042] Another preferred embodiment of the present invention is Figure 6 As shown, Figure 4 The difference is, Figure 4 The inwardly sunken arc groove 15 and the groove wrapping surfaces 17 on both sides are kept straight, and no stamping and stretching are performed. Only the local cutting modules on both sides are stretched upward to form a semicircular convex wrapping surface 16 that bulges upward, and four semicircular convex wrapping surfaces 14 that bulge upward are formed on each side.

[0043] Another preferred embodiment of the present invention is Figure 7 As shown, symmetrical cutting is performed on each side of the clamping side panel 12, and an intermediate module is cut out for downward pressing. An inwardly recessed groove wrapping surface 17 is laterally punched out in the middle portion, and inwardly recessed longitudinal grooves are also punched out on both sides as reinforcing ribs 18. The longitudinal grooves serve as reinforcing ribs 18 to reinforce the clamping side panel 12. Through holes are provided on both side surfaces of the reinforcing ribs 18 and on the left and right ends of the groove wrapping surface 17. The through holes are also the handle mounting holes 14. The handle 2 passes through the through holes and is clamped by the reinforcing ribs 18 and the groove wrapping surface 17 on one side of the through holes and the clamping side panel 12 body on the other side, thereby fixing and limiting the handle.

[0044] It should be noted that the reinforcing ribs 18 on the clamping side plate 12 are arranged longitudinally along the inclined surface of the clamping side plate 12, and the reinforcing ribs 18 are integrally formed with the clamping side plate 12. The reinforcing ribs 18 can increase the strength of the two clamping side plates 12 of the binder clip, ensure that the clamp body does not deform, and improve the yield rate. At the same time, the reinforcing ribs 18 are in the form of self-formed longitudinal grooves, and also serve as the lower bottom surface of the fixed handle 2.

[0045] The reinforcing rib 18 , the arc-shaped groove 15 , the convex wrapping surface 16 and the groove wrapping surface 17 of the present invention are formed by cutting, stamping and stretching the clamping side plate 12 body.

[0046] The present invention makes full use of the tensile properties of the raw materials used to manufacture the long tail clip. Conventional clip body materials of the long tail clip are 45# steel or 40Mn, and the tensile coefficients of these two materials are greater than or equal to 15%. The new labor-saving long tail clip of the present invention makes full use of the tensile properties of the above materials, and controls the tensile rate of the handle mounting sleeve at the extreme position to be no greater than 9.5%. For example, the length of a raised wrapping surface 16 before stretching is 19.244, and after stretching is 21.08551, and the tensile rate is 9.5%, which is less than the tensile coefficient of the material of 15%. The production and manufacturing of the long tail clip in the prior art does not make use of this property of the raw materials. The present invention makes use of this property to eliminate the four round tubes for fixing the handles in the previous design, and changes the external body to be stamped and stretched to form, so that the paint is more easily attached to the surface of the clip body, thereby improving the utilization rate of the paint, reducing waste, and reducing costs. At the same time, the area of ​​the clip body steel belt is reduced, raw materials are saved, and costs are also reduced.

[0047] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two elements, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0048] Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0049] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A new type of labor-saving long tail clip, including a clip body and a handle, characterized in that: The clamping body includes a supporting base plate and two clamping side plates on both sides. The two clamping side plates are inclined inwardly from the supporting base plate to form clamping ends. The handle is arranged at 1 / 5 to 4 / 5 of the length of the clamping side plate. The clamping side plates on each side are cut symmetrically, and the middle module is cut out for pressing down. An inwardly concave groove wrapping surface is punched out laterally in the middle part, and inwardly concave longitudinal grooves are also punched out inwardly on both sides as reinforcement ribs. This longitudinal groove serves as a reinforcement rib to reinforce the clamping side plate. Through holes are arranged on both side surfaces of the reinforcement rib and on the left and right ends of the groove wrapping surface. The through hole is also the handle mounting hole. The handle passes through the through hole and is clamped by the reinforcement rib and the groove wrapping surface on one side of the through hole and the clamping side plate body on the other side.

2. A new type of labor-saving binder clip according to claim 1, characterized in that: The clamping side plate is provided with reinforcing ribs longitudinally on the upper inclined surface.

3. A new type of labor-saving binder clip according to claim 2, characterized in that: The reinforcing ribs are integrally formed with the clamping side plates, and are formed into longitudinal protrusions or longitudinal grooves by cutting, stamping, and stretching the clamping side plates.

4. A new type of labor-saving binder clip according to claim 1 or 2, characterized in that: The clamping side plate is provided with a handle installation position, and the handle installation position includes a handle installation sleeve, and a handle installation hole is provided in the handle installation sleeve.

5. A new type of labor-saving binder clip according to claim 4, characterized in that: The handle installation position takes the inclined surface of the clamping side plate as the central axis reference.

6. A new type of labor-saving binder clip according to claim 4, characterized in that: The handle installation sleeve is a convex wrapping surface and / or a groove wrapping surface formed by cutting, stamping and stretching the clamping side plate.

7. The novel labor-saving binder clip according to claim 4 is characterized in that: A handle mounting hole is arranged on the reinforcing rib.

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