Sliding adjusting type spring

Abstract

The utility model relates to a sliding adjusting type spring which is provided with a pressure spring and two drag hooks, and each drag hook comprises two pull rods, a connecting rod and a pressure hook. An adjusting assembly is arranged on the pull rod and comprises a rotating rod, an inserting rod, a positioning rod and an inserting sleeve, a rotating shaft is fixedly arranged at the other end of the rotating rod, an adjusting groove is formed in the inserting rod, a threaded part is arranged on the rotating shaft, a plurality of adjusting sliding blocks are arranged in the adjusting groove, threaded holes are formed in the adjusting sliding blocks, and a plurality of lock holes are formed in the outer wall of the inserting rod. Locking teeth are slidably arranged in the locking holes, driving grooves are formed in the adjusting sliding blocks, driving blocks are slidably arranged in the driving grooves, reset springs are arranged between the driving blocks and the driving grooves, inserting grooves corresponding to the inserting rods are formed in the inserting sleeves, connecting tooth parts are arranged in the inserting grooves, and the rotating rod and the positioning rod are fixed after length adjustment is conducted through cooperation of the inserting rods and the inserting grooves. The device is ingenious in structure, efficient and convenient.

Description

Technical Field

[0001] The utility model relates to the field of springs, in particular to a sliding adjustment spring. Background Art

[0002] A spring is a mechanical part that uses elasticity to work. Parts made of elastic materials deform under external force and return to their original shape after the external force is removed. It is also called "spring". It is generally made of spring steel. There are many types of springs. According to their shapes, they mainly include helical springs, scroll springs, leaf springs, special-shaped springs, etc.

[0003] With the improvement of people's quality of life, outings and travel are indispensable, and drawstrings are needed for setting up tents. In order to effectively tighten the drawstrings and have a certain elasticity, the lifting type of the drawstrings uses a variety of springs, such as ordinary springs, rubber springs, hydraulic springs, etc. However, in the actual use of current springs, the connecting part of the spring is too short and cannot be used in various different usage environments. Therefore, it is necessary to develop a spring whose connecting part can be adjusted to suit various usage environments. Utility Model Content

[0004] The purpose of the utility model is to provide a sliding adjustment spring with an ingenious structure, which can adjust the length of the pull rod according to the specific use environment, and then adjust the extension amount of the connecting rod, so that it is suitable for various use environments and is convenient and practical.

[0005] The technical scheme for achieving the purpose of the utility model is as follows: the utility model comprises a compression spring and two drawing hooks which are arranged through the compression spring, each drawing hook being arranged in the compression spring in a centrally symmetrical shape, the drawing hook comprising two pulling rods, a connecting rod which connects the two pulling rods and has a U-shaped cross section, and a pressing hook which is arranged on each pulling rod away from one end of the connecting rod and can press against the end face of the compression spring; the pulling rod is provided with an adjusting component which can adjust the length of the pulling rod, the adjusting component comprises a rotating rod, a square plug rod which is rotatably connected to the rotating rod, a positioning rod which is fixedly connected to the connecting rod, and a plug-in sleeve which is arranged on the positioning rod away from one end of the connecting rod and can be plugged into and matched with the plug rod, one end of the rotating rod is rotatably connected to the drawing hook, and a rotating shaft which is coaxially arranged with the rotating rod is fixedly provided at the other end of the rotating rod, the plug rod is provided with an adjusting groove for the rotating shaft to be inserted and rotated, the adjusting groove is coaxially arranged with the plug rod, the rotating shaft is provided with a threaded portion, and the adjusting groove is provided with a The cam is provided with a plurality of locking holes which are connected with the adjusting slots, and the locking teeth are slidably arranged in the locking holes, and the sliding direction of each locking tooth is perpendicular to the axis of the adjusting slot. The adjusting slide block is provided with a driving slot, and a driving block is slidably arranged in the driving slot. A return spring is provided between the driving block and the driving slot, and two ends of the return spring act on the driving block and the driving slot respectively. A slot corresponding to the insert rod is provided in the insert sleeve, and a connecting tooth portion is provided in the slot. Each driving block pushes out the locking teeth and presses them against the connecting tooth portion through the threaded cooperation of the threaded portion on the rotating shaft and the threaded holes on the adjusting slide block, the sliding cooperation of the adjusting slide block and the adjusting slot, and the continuous force of the return spring on the driving block. The insert rod and the slot are fixedly connected through the cooperation of each locking tooth and the connecting tooth portion, and the rotating rod and the positioning rod are fixed after the length is adjusted by the cooperation of the insert rod and the slot.

[0006] Furthermore, a limiting slide groove is provided on the side wall of each lock hole, and the extension direction of the limiting slide groove is perpendicular to the extension direction of the adjustment groove. A limiting slider is provided on both sides of each lock tooth, and each lock tooth is slidably arranged in the lock hole through the cooperation of the limiting slider and the limiting slide groove.

[0007] Furthermore, the cross section of each driving block is trapezoidal, and both sides of each driving block are provided with guiding inclined surfaces.

[0008] Furthermore, each pressing hook part is provided with a clamping block, and each clamping block is provided with a clamping groove that can clamp the end face of the compression spring. Each pressing hook part is fixedly connected to the compression spring through the clamping connection between the clamping groove on the clamping block and the end face of the compression spring.

[0009] Furthermore, a gripping portion is provided on the outer wall of the rotating rod, and the gripping portion is composed of a plurality of friction strips distributed on the rotating rod along the circumference of the axis of the rotating rod.

[0010] The utility model has positive effects: (1) The utility model arranges an adjustment component on the pull rod, and drives the rotating shaft to rotate through the rotating rod. The rotating shaft drives the adjusting slide to slide in the adjusting groove through the cooperation of the threaded part and the threaded hole on the adjusting slide. The reset spring on the adjusting slide drives the driving block to enter the locking hole and move the top of the locking tooth in the locking hole. After the length adjustment of the connecting rod is completed, the top locking tooth is fixed by pressing with the connecting tooth part. When it is necessary to adjust the length of the connecting rod, the rotating rod is rotated to make the driving block disengage from the locking hole. The length of the connecting rod can be adjusted by pulling with external force, which effectively solves the problem that the length of the connecting rod in the prior art is too short to be suitable for various use environments. The length of the connecting rod is further adjusted by adjusting the length of the pull rod, so as to be suitable for various different use environments of the spring. The structure is ingenious and efficient and convenient.

[0011] (2) The utility model provides a limit slide groove on the side wall of the lock hole, and a limit slider is provided on each lock tooth. The cooperation between each limit slider and the limit slide groove ensures the smooth sliding of the lock tooth and prevents the lock tooth from falling out of the lock hole. The utility model is safe and practical.

[0012] (3) The utility model provides guiding slopes on both sides of the driving block, which, on the one hand, avoids the jamming between the lock hole and the driving block, and on the other hand, ensures that the driving block can smoothly enter and exit the lock hole, which is convenient and efficient.

[0013] (4) The utility model provides a clamping block on the pressing hook part, and a clamping groove on the clamping block. The clamping connection between the clamping groove and the end surface of the compression spring ensures that the pressing hook part and the entire pull hook are stable and firm after being connected with the spring, which is stable and efficient.

[0014] (5) The utility model provides a gripping portion on the outer wall of the rotating rod, and the gripping portion is composed of a plurality of friction strips, so that it is convenient for operators to drive the rotating rod, which is convenient and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to specific embodiments and in conjunction with the accompanying drawings.

[0016] Figure 1 It is a schematic diagram of the overall structure of the sliding adjustment spring in the utility model;

[0017] Figure 2 It is a schematic diagram of the overall structure of the draw hook in the utility model;

[0018] Figure 3 This is a schematic diagram of the connection structure between the connecting rod and the positioning rod in the utility model;

[0019] Figure 4It is a cross-sectional view of the connection structure of the connecting rod and the positioning rod in the utility model;

[0020] Figure 5 for Figure 4 The enlarged view of point A in the middle;

[0021] Figure 6 This is a schematic diagram of the connection structure between the rotating rod and the pressing hook in the utility model;

[0022] Figure 7 It is a cross-sectional view of the connection structure between the rotating rod and the pressing hook in the utility model;

[0023] Figure 8 for Figure 7 Enlarged view of point B in the middle. DETAILED DESCRIPTION

[0024] See Figures 1 to 8The utility model has a compression spring 1, and two hooks 2 that penetrate through the compression spring 1, each hook 2 is arranged in the compression spring 1 in a centrally symmetrical shape, the hook 2 includes two pull rods, a connecting rod 25 that connects the two pull rods and has a U-shaped cross section, and a pressure hook 26 that is arranged on each pull rod away from the connecting rod 25 and can press against the end surface of the compression spring 1; the pull rod is provided with an adjustment component 2 that can adjust the length of the pull rod, and the adjustment component 2 includes a rotating rod 21, a square-shaped insert rod 22 that is rotatably connected to the rotating rod 21, and a positioning rod 23 that is fixedly connected to the connecting rod 25. , and an insert sleeve 24 which is arranged on one end of the positioning rod 23 away from the connecting rod 25 and can be plugged with the insertion rod 22. One end of the rotating rod 21 is rotatably connected to the pressure hook 26, and the other end of the rotating rod 21 is fixed with a rotating shaft 211 which is coaxially arranged with the rotating rod 21. The insertion rod 22 is provided with an adjustment groove 221 for the rotating shaft 211 to be inserted and rotated. The adjustment groove 221 is coaxially arranged with the insertion rod 22. The rotating shaft 211 is provided with a threaded portion, and a plurality of adjustment sliders 28 are provided in the adjustment groove 221. Each adjustment slider 28 is provided with a threaded portion that can be threadedly matched with the threaded portion The threaded hole 281 of the plug rod 22 is provided with a plurality of locking holes 222 connected with the adjusting groove 221 on the outer wall of the plug rod 22, and a locking tooth 20 is slidably provided in each locking hole 222, and the sliding direction of each locking tooth 20 is perpendicular to the axis of the adjusting groove 221. The adjusting slider 28 is provided with a driving groove 282, and a driving block 29 is slidably provided in the driving groove 282. A reset spring 283 is provided between the driving block 29 and the driving groove 282, and the two ends of the reset spring 283 act on the driving block 29 and the driving groove 282 respectively. The plug sleeve 24 is provided with a corresponding locking tooth 20 in the plug rod 22. The slot 241 has a connecting tooth portion 242 in it. Each drive block 29 pushes out the locking tooth 20 and presses it against the connecting tooth portion 242 through the threaded cooperation between the threaded portion on the rotating shaft 211 and the threaded hole 281 on each adjusting slider 28, the sliding cooperation between the adjusting slider 28 and the adjusting groove 221, and the continuous force of the return spring 283 on the drive block 29. The insertion rod 22 and the slot 241 are fixedly connected through the cooperation between each locking tooth 20 and the connecting tooth portion 242, and the rotating rod 21 and the positioning rod 23 are fixed after the length is adjusted by the cooperation between the insertion rod 22 and the slot 241.

[0025] A lower limit slide groove 223 is provided on the side wall of each lock hole 222, and the extension direction of the lower limit slide groove 223 is perpendicular to the extension direction of the adjustment groove 221. A limit slider 201 is provided on both sides of each lock tooth 20, and each lock tooth 20 is slidably arranged in the lock hole 222 through the cooperation of the limit slider 201 and the lower limit slide groove 223.

[0026] The cross section of each driving block 29 is trapezoidal in shape, and guide slopes 291 are provided on both sides of each driving block 29 .

[0027] Each pressing hook 26 is provided with a clamping block 3, and each clamping block 3 is provided with a clamping groove 31 for clamping the end face of the compression spring 1. Each pressing hook 26 is fixedly connected to the compression spring 1 through the clamping connection between the clamping groove 31 on the clamping block 3 and the end face of the compression spring 1.

[0028] A gripping portion 27 is disposed on the outer wall of the rotating rod 21 . The gripping portion 27 is composed of a plurality of friction strips distributed on the rotating rod 21 along the circumference of the axis of the rotating rod 21 .

[0029] Working principle of the utility model: during the use of the utility model, after each draw hook 2 is connected with the compression spring 1, the clamping block 3 of the compression hook 26 on each draw hook 2 is clamped with the end face of the compression spring 1 through the clamping groove 31, so that each draw hook 2 is positioned with one end of the compression spring 1, and then the length of the pull rod is adjusted according to the actual connection requirements. During the adjustment process, the operator can first partially compress the compression spring 1, and then the operator can rotate the rotating rod 21 through the gripping portion 27, and the rotating rod 21 drives the rotating shaft during the rotation process. 211 is rotated, and during the rotation process, the threaded portion on the rotating shaft 211 cooperates with the threaded hole 281 on the adjusting slider 28 to drive each adjusting slider 28 to move. During the movement of each adjusting slider 28, the driving block 29 enters the adjusting groove 221 with the guidance of the guide inclined surface 291 and the locking hole 222, and disengages from the locking tooth 20. After the locking tooth 20 is no longer supported by the driving block 29, the operator can pull the connecting rod 25, thereby ensuring that the extension amount of the U-shaped connecting rod 25 can adapt to the actual use According to the requirement, after the length of the connecting rod 25 is stretched, the operator rotates the rotating rod 21 in the opposite direction, and the rotating rod 21 drives the adjusting slider 28 to slide through the cooperation of the threaded portion and the threaded hole 281. The driving block 29 on the adjusting slider 28 is driven by the reset spring 283 to extend into the lock hole 222 and push out the lock tooth 20. After the pushed-out lock tooth 20 is pressed against the connecting tooth portion 242, the insertion rod 22 is fixedly connected with the plug-in sleeve 24, and then the positioning rod 23 and the rotating rod 21 are also fixed, thereby ensuring the stability of the connecting rod 25 after it is extended. The utility model effectively solves the problem in the prior art that the connecting portion on the spring extends too short and cannot be fully and firmly connected to the external connecting piece. The utility model adjusts the length of the pull rod through the cooperation between the locking tooth 20 and the connecting tooth portion 242, the cooperation between the threaded portion on the rotating shaft 211 and the threaded hole 281 on the adjusting slider 28, and the cooperation between the adjusting slider 28 and the adjusting groove 221, thereby adjusting the length of the connecting rod 25, thereby effectively ensuring the high efficiency of the adjustment of the connecting rod 25 and the stability of the connecting rod 25 after adjustment. The utility model has an ingenious structure and is efficient and convenient.

[0030] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific 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 sliding adjustment spring, comprising a compression spring and two hooks penetrating the compression spring, each hook being arranged in a centrally symmetrical manner in the compression spring, the hook comprising two pull rods, a connecting rod connecting the two pull rods and having a U-shaped cross section, and a pressing hook arranged on each pull rod away from one end of the connecting rod and capable of pressing against the end surface of the compression spring; characterized in that: The pull rod is provided with an adjusting component that can adjust the length of the pull rod. The adjusting component includes a rotating rod, a square-shaped plug rod rotatably connected to the rotating rod, a positioning rod fixedly connected to the connecting rod, and a plug-in sleeve arranged on the positioning rod at an end away from the connecting rod and capable of plugging and cooperating with the plug rod. One end of the rotating rod is rotatably connected to the pressure hook, and the other end of the rotating rod is fixedly provided with a rotating shaft coaxially arranged with the rotating rod. The plug rod is provided with an adjusting groove for the rotating shaft to be inserted and rotated. The adjusting groove is coaxially arranged with the plug rod, and the rotating shaft is provided with a threaded portion. A plurality of adjusting sliders are provided in the adjusting groove, and each adjusting slider is provided with a threaded hole that can threadably cooperate with the threaded portion. A plurality of locking holes connected to the adjusting groove are provided on the outer wall of the plug rod, and a sliding hole is provided in each locking hole. The adjusting block is provided with a locking tooth, and the sliding direction of each locking tooth is perpendicular to the axis of the adjusting slot. The adjusting block is provided with a driving slot, and a driving block is slidably provided in the driving slot. A return spring is provided between the driving block and the driving slot, and the two ends of the return spring act on the driving block and the driving slot respectively. A slot corresponding to the insertion rod is provided in the plug-in sleeve, and a connecting tooth portion is provided in the slot. Each driving block pushes out the locking tooth and presses it against the connecting tooth portion through the threaded cooperation of the threaded portion on the rotating shaft and the threaded hole on each adjusting block, the sliding cooperation of the adjusting block and the adjusting slot, and the continuous force of the return spring on the driving block. The insertion rod and the slot are fixedly connected through the cooperation of each locking tooth and the connecting tooth portion, and the rotating rod and the positioning rod are fixed after the length is adjusted by the cooperation of the insertion rod and the slot.

2. The sliding adjustment spring according to claim 1, characterized in that: A limiting slide groove is provided on the side wall of each lock hole, and the extension direction of the limiting slide groove is perpendicular to the extension direction of the adjustment groove. A limiting slider is provided on both sides of each lock tooth, and each lock tooth is slidably arranged in the lock hole through the cooperation of the limiting slider and the limiting slide groove.

3. The sliding adjustment spring according to claim 2, characterized in that: The cross section of each driving block is trapezoidal, and both sides of each driving block are provided with guiding inclined surfaces.

4. The sliding adjustment spring according to claim 3, characterized in that: Each pressing hook part is provided with a clamping block, each clamping block is provided with a clamping groove which can clamp the end face of the compression spring, and each pressing hook part is fixedly connected with the compression spring through the clamping connection between the clamping groove on the clamping block and the end face of the compression spring.

5. The sliding adjustment spring according to claim 4, characterized in that: A gripping portion is provided on the outer wall of the rotating rod, and the gripping portion is composed of a plurality of friction strips distributed on the rotating rod along the circumference of the axis of the rotating rod.

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