Clamp with adjustable tightness

Abstract

The utility model discloses a clamp with adjustable tightness. The clamp comprises a clamp main body, wherein the clamp main body consists of a lower clamping arm, an upper clamping arm and a tightness adjusting mechanism; the lower clamping arm is pivoted with the upper clamping arm through a movable shaft; the tightness adjusting mechanism comprises a sliding bearing seat and a spring, the spring is obliquely arranged between the lower clamping arm and the upper clamping arm, one end of the spring is connected with the lower clamping arm, and the other end of the spring is connected with the upper clamping arm; the sliding bearing seat can move back and forth along the guide groove of the lower clamping arm, the clamping force is adjusted by changing the stretching amount of the spring, the tightness adjusting mechanism comprises an adjusting bolt installed in a rectangular groove formed in the lower clamping arm, and the sliding bearing seat can move back and forth along the guide groove of the lower clamping arm through the tightness adjusting mechanism to change the stretching amount of the spring. Therefore, the clamping force of the clamp is adjusted, the clamp can adapt to different use scenes and meet the clamping requirements for objects with different thicknesses, and the problem that clamping is not firm or the objects are damaged due to the fixed clamping force is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of clamp device, especially a clamp with adjustable tightness. BACKGROUND

[0002] A clamp is a tool used for holding, fixing or connecting objects, usually composed of two or more openable parts, which fixes objects together by applying pressure. The design of the clamp is diverse, suitable for different scenarios and needs.

[0003] Currently, existing sleeve clamps usually adopt fixed spring structure, and the clamping force is not adjustable, which leads to the inability to adjust the clamping force according to different needs during use. When clamping objects of different thicknesses, fixed clamping force may result in insecure clamping or damage to the objects.

[0004] Therefore, we provide a clamp with adjustable tightness. SUMMARY

[0005] The utility model aims at the above-mentioned technical problem, provides a kind of clamp with adjustable tightness, the front and back distance of user can be easily adjusted by adjusting sliding bearing seat, so as to adapt to the object of different thickness and material.

[0006] Therefore, the utility model provides a clamp with adjustable tightness, comprising a clamp body, the clamp body is composed of lower clamp arm, upper clamp arm, tightness adjusting mechanism;

[0007] The lower clamp arm and the upper clamp arm are connected by a movable shaft;

[0008] The tightness adjusting mechanism includes a sliding bearing seat and a spring, the spring is inclinedly arranged between the lower clamp arm and the upper clamp arm, one end of the spring is connected with the lower clamp arm, and the other end is connected with the upper clamp arm;

[0009] The sliding bearing seat can move forward and backward along the guide groove of the lower clamp arm, and the clamping force is adjusted by changing the stretching amount of the spring.

[0010] Preferably, the tightness adjusting mechanism includes an adjusting bolt installed in the rectangular slot of the lower clamp arm, the adjusting bolt is connected with the sliding bearing seat, the sliding bearing seat is provided with a spring, and the other end of the spring is connected with the upper clamp arm.

[0011] Preferably, the two ends of the spring are detachably connected with the sliding bearing seat and the upper clamp arm through the first fixed block and the second fixed block, the first fixed block is installed on the mounting groove of the sliding bearing seat through a screw, and the second fixed block is movably connected with the hinge hole of the upper clamp arm through a pin shaft.

[0012] Preferably, the sliding bearing is adapted to be mounted in the guide slots at the left and right ends of the lower clamping arm, and the sliding bearing is movable forward and backward within the travel range of the guide slots by adjusting the adjusting bolt.

[0013] Preferably, elastic clamping plates are mounted on the clamping end faces of the lower clamping arm and the upper clamping arm, and toothed cavity structures for enhancing friction are arranged at the clamping openings of the elastic clamping plates.

[0014] Preferably, a buffer anti-skid layer is fixed to the clamping working face of the elastic clamping plate, and the buffer anti-skid layer can be made of high-elasticity silica gel material.

[0015] Preferably, the corresponding ends of the lower clamping arm and the upper clamping arm are respectively provided with clamping cavities, the elastic clamping plate is in embedded cooperation with the clamping cavities through the clamping blocks at the ends of the elastic clamping plate, and reliable fixation is realized through the bolt fasteners.

[0016] Compared with the prior art, the utility model provides a clasp with adjustable tightness, which has the following beneficial effects:

[0017] 1. According to the utility model, the sliding bearing is movable forward and backward within the guide slots of the lower clamping arm through the tightness adjusting mechanism, the stretching amount of the spring is changed, the clamping force of the clasp is adjusted, different use scenarios and clamping requirements for different thickness objects can be adapted to, and the problems of insecure clamping or damage to objects caused by fixed clamping force are avoided.

[0018] 2. According to the utility model, the two ends of the spring are respectively connected with the sliding bearing and the upper clamping arm through the first fixed block and the second fixed block in a detachable mode, the spring is convenient to replace and maintain, the elastic clamping plate is in embedded cooperation with the clamping cavities of the lower clamping arm and the upper clamping arm through the end clamping blocks, and is fixed through the bolt fasteners, and the elastic clamping plate is convenient to install and detach.

[0019] 3. According to the utility model, the elastic clamping plate is mounted on the clamping end faces of the lower clamping arm and the upper clamping arm, toothed cavity structures are arranged at the clamping openings, a buffer anti-skid layer made of high-elasticity silica gel material is fixed to the clamping working face of the elastic clamping plate, the friction between the clasp and the object is enhanced through the design, clamping stability is improved, and the object is prevented from sliding.

[0020] The parts not involved in the device are the same as or can be realized by the prior art, the utility model has the advantages of simple structure and convenient operation. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a first perspective structural schematic view of the whole clasp with adjustable tightness according to the utility model.

[0022] Figure 2 It is a second perspective structural schematic view of the whole clasp with adjustable tightness according to the utility model.

[0023] Figure 3 A tension adjusting mechanism structure diagram of a tension-adjustable clamp is provided in the utility model.

[0024] Figure 4 A tension-adjustable elastic clamping plate mounting structure diagram is provided in the utility model.

[0025] In the drawing: 1, clamp main body; 2, lower clamping arm; 21, rectangular groove; 22, guide groove; 3, upper clamping arm; 4, elastic clamping plate; 41, clamping block; 5, movable shaft; 6, tension adjusting mechanism; 61, adjusting bolt; 62, sliding bearing seat; 63, first fixed block; 631, second fixed block; 632, pin shaft; 64, spring; 7, clamping cavity. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0027] In the description of the utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0028] Embodiment one: a tension-adjustable clamp, as shown in the drawing, comprising a clamp main body 1, the clamp main body 1 is composed of a lower clamping arm 2, an upper clamping arm 3 and a tension adjusting mechanism 6, and the clamp main body 1 is characterized in that: Figures 1-4 The lower clamping arm 2 and the upper clamping arm 3 are pivotally connected through a movable shaft 5;

[0029] The tension adjusting mechanism 6 comprises a sliding bearing seat 62 and a spring 64, the spring 64 is obliquely arranged between the lower clamping arm 2 and the upper clamping arm 3, one end of the spring 64 is connected with the lower clamping arm 2, and the other end of the spring 64 is connected with the upper clamping arm 3;

[0030] The sliding bearing seat 62 can move forward and backward along the guide groove 22 of the lower clamping arm 2, and the clamping force is adjusted by changing the stretching amount of the spring 64.

[0031]

[0032] ​In use, the clip body 1 is placed near the object to be clamped, at this time the lower clamp arm 2 and the upper clamp arm 3 are in a natural open state, at this time the spring 64 has a larger amount of stretching, if you want to increase the clamping force, push the sliding carrier 62 along the guide groove 22 of the lower clamp arm 2, since one end of the spring 64 is connected to the sliding carrier 62 on the lower clamp arm 2, and the other end is connected to the upper clamp arm 3, the sliding carrier 62 moves forward, the spring 64 is compressed, so that the elastic force resists the upper clamp arm 3, so that the clamping force of the clip increases, if you want to reduce the clamping force, pull the sliding carrier 62 along the guide groove 22 of the lower clamp arm 2, so that the compression amount of the spring 64 decreases, the elastic force generated by the spring 64 decreases accordingly, and the clamping force of the clip also decreases accordingly.

[0033] As shown in Figures 1-4 , the tension adjustment mechanism 6 further comprises an adjustment bolt 61 installed in the rectangular groove 21 of the lower clamp arm 2, the adjustment bolt 61 is connected with the sliding carrier 62, the sliding carrier 62 is provided with a spring 64, the other end of the spring 64 is connected with the upper clamp arm 3, the adjustment bolt 61 is installed in the rectangular groove 21 of the lower clamp arm 2, the user can directly operate the adjustment bolt 61, since it is connected with the sliding carrier 62, by pushing or pulling the adjustment bolt 61, the movement of the sliding carrier 62 can be conveniently controlled.

[0034] As shown in Figures 1-4 , the two ends of the spring 64 are detachably connected with the sliding carrier 62 and the upper clamp arm 3 through the first fixed block 63 and the second fixed block 631; the first fixed block 63 is installed on the mounting groove of the sliding carrier 62 through a screw, the second fixed block 631 is movably connected with the hinge hole of the upper clamp arm 3 through a pin shaft 632, through the movable connection mode of the pin shaft 632 and the hinge hole, the second fixed block 631 is allowed to rotate by a certain angle relative to the upper clamp arm 3, in the process of opening and closing the clip, the lower clamp arm 2 and the upper clamp arm 3 will rotate around the movable shaft 5, the length and angle of the spring 64 will also change, through the movable connection, the spring 64 can naturally adapt to the change of angle, avoid the additional stress concentration caused by rigid connection, ensure the normal work of the spring 64, prolong its service life, at the same time, in the process of using the clip, the spring 64 as a key elastic component is frequently stressed and is prone to fatigue, damage and other situations, when the spring 64 has a problem, the detachable connection mode makes the user can easily detach it from the clip for replacement, without discarding the entire clip, reducing the use cost, improving the service life of the clip.

[0035] As shown in Figures 1-4As shown, the sliding bearing 62 is adapted to be mounted in the left and right end guide slots 22 of the lower clamping arm 2, and the sliding bearing 62 can move back and forth along the moving range of the guide slot 22 through the adjustment of the adjusting bolt 61. In use, the guide slot 22 provides a clear and stable moving path for the sliding bearing 62, so that the sliding bearing 62 can only move back and forth along the direction of the guide slot 22, avoiding shaking or deviation of the sliding bearing 62 during movement, thereby ensuring the accuracy of the clamping force adjustment of the clamp.

[0036] Embodiment two: a clamping force adjustable clamp, as shown in the drawings, Figures 1-4 As shown, the elastic clamping plates 4 are mounted on the clamping end faces of the lower clamping arm 2 and the upper clamping arm 3, and the clamping openings of the elastic clamping plates 4 are provided with tooth-shaped cavity structures for enhancing friction.

[0037] The clamping working surfaces of the elastic clamping plates 4 are fixedly connected with a buffer anti-skid layer, and the buffer anti-skid layer can be made of high-elasticity silica gel material.

[0038] The corresponding ends of the lower clamping arm 2 and the upper clamping arm 3 are respectively provided with clamping cavities 7, the elastic clamping plates 4 are embeddedly matched with the clamping cavities 7 through the clamping blocks 41 at the ends of the elastic clamping plates 4, and are reliably fixed through bolt fasteners.

[0039] In use, the elastic clamping plates 4 can be deformed to a certain extent according to the shape of the surface of the object, better adhere to the object, thereby increasing the contact area and making the clamping more stable. Meanwhile, in actual clamping, the tooth-shaped cavity structures can increase the friction between the elastic clamping plates 4 and the clamped object, and the tooth-shaped structures can be embedded into the surface of the object, effectively preventing the object from sliding in the clamp, and improving the clamping reliability of the clamp. Even when subjected to a certain external force, the object is not easy to fall off. When disassembling and maintaining, since the elastic clamping plates 4 are embeddedly matched with the clamping cavities 7 on the lower clamping arm 2 and the upper clamping arm 3 through the clamping blocks 41 at the ends of the elastic clamping plates 4, this mounting method is simple and convenient, and can quickly complete the installation of the elastic clamping plates 4. Meanwhile, when the elastic clamping plates 4 need to be replaced, they can also be easily disassembled, thereby improving the efficiency of maintenance and replacement.

[0040] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A clasp with adjustable tightness, comprising a clasp body (1) composed of a lower clamping arm (2), an upper clamping arm (3), and a tightness adjusting mechanism (6), characterized in that: the lower clamping arm (2) and the upper clamping arm (3) are pivotally connected through a movable shaft (5); the tightness adjusting mechanism (6) comprises a sliding bearing seat (62) and a spring (64) which is obliquely arranged between the lower clamping arm (2) and the upper clamping arm (3), one end of the spring (64) being connected with the lower clamping arm (2) and the other end being connected with the upper clamping arm (3); the sliding bearing seat (62) is movable back and forth along a guide groove (22) of the lower clamping arm (2), and the clamping force is adjusted by changing the stretching amount of the spring (64). The tightness adjusting mechanism (6) further comprises an adjusting bolt (61) installed in a rectangular groove (21) of the lower clamping arm (2), the adjusting bolt (61) being connected with the sliding bearing seat (62), the sliding bearing seat (62) being provided with the spring (64), the other end of the spring (64) being connected with the upper clamping arm (3). The two ends of the spring (64) are detachably connected with the sliding bearing seat (62) and the upper clamping arm (3) through a first fixed block (63) and a second fixed block (631), respectively; the first fixed block (63) is installed on a mounting groove of the sliding bearing seat (62) through a screw, and the second fixed block (631) is movably connected with a hinge hole of the upper clamping arm (3) through a pin shaft (632). The sliding bearing seat (62) is adaptively installed in the left and right end guide grooves (22) of the lower clamping arm (2), and is movable back and forth within the travel range of the guide groove (22) through the adjustment of the adjusting bolt (61).

2. The adjustable tension clip of claim 1, wherein, Resilient clamping plates (4) are installed on the clamping end faces of the lower clamping arm (2) and the upper clamping arm (3), and toothed cavity structures for enhancing friction are provided at the clamping openings of the resilient clamping plates (4).

3. The adjustable tension clip of claim 2, wherein, A buffer anti-skid layer is fixed to the clamping working face of the resilient clamping plate (4), and the buffer anti-skid layer can be made of high-elasticity silicone material.

4. The adjustable tension clip of claim 3, wherein, Corresponding end portions of the lower clamping arm (2) and the upper clamping arm (3) are respectively provided with clamping cavities (7), the resilient clamping plate (4) is embeddedly matched with the clamping cavities (7) through clamping blocks (41) at the end portions of the resilient clamping plate (4), and is reliably fixed through bolt fasteners.

5. The adjustable tension clip of claim 1, wherein, ​ 6. The adjustable tension clip of claim 5, wherein, ​ 7. The adjustable tension clip of claim 5, wherein, ​

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