Protective device to prevent hook spring from breaking off

Abstract

The present invention provides a protective device for preventing a belt hook spring from being disconnected. The protective device for preventing a belt hook from being disconnected comprises a spring and a buffer, wherein both ends of the spring are fixedly connected with spring hooks for mounting the spring on an external device, and the buffer passes through the spring and is connected with the spring hook, so that the tension of the spring hook is transferred to the buffer. The protective device for preventing a belt hook from being disconnected of the present invention utilizes a spring buffer pressure piece to connect the spring hook to achieve docking between the connecting component and the spring, and a cotter pin crosses the limiting hole on the spring buffer pressure piece, thereby utilizing the toughness of the cotter pin itself to transfer the tension of the spring hook to the cotter pin, thereby reducing the tension between the cotter pin and the spring hook, thereby extending the service life of the belt hook spring.

Description

Technical Field

[0001] The invention relates to the technical field of spring protection, in particular to a protection device for preventing a hook spring from breaking off. 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] Along with the popularization of industrialization, spring is more and more popular in life.Meanwhile, in the prior art, a hook-shaped connecting part is added to the traditional spring so that the spring can be connected on different parts.

[0004] However, in actual use, the hook-shaped connection part of the spring is often easily broken due to excessive pulling force, too high stretching frequency, large stretching vibration or excessive bending angle of the spring hook. This will cause the spring with the hook-shaped connection part to need to be replaced frequently during use, resulting in a waste of resources and reduced work efficiency.

[0005] Therefore, it is urgent to redesign a new protective device for preventing the hook spring from breaking off to solve the above problems. Summary of the invention

[0006] The present invention provides a protective device for preventing a hook spring from breaking off, so as to solve the technical problem mentioned in the above background technology.

[0007] The present invention provides a protective device for preventing a spring with a hook from being disconnected. The protective device for preventing a spring with a hook from being disconnected comprises a spring and a buffer. Both ends of the spring are fixedly connected with spring hooks for mounting the spring on external equipment. The buffer passes through the spring and is connected to the spring hook so that the tension of the spring hook is transferred to the buffer.

[0008] Optionally, the buffer includes at least one spring buffer and a cotter pin, and two limiting holes are provided on the spring buffer. When one end of the spring connected to the spring hook extends into the spring buffer, the cotter pin is inserted into the limiting hole so that the tension of the spring hook is transferred to the cotter pin.

[0009] Optionally, the cotter pin includes a grasping portion, a connecting portion and a puncturing portion, wherein the grasping portion is fixedly connected to one end of the connecting portion, and the puncturing portion is fixedly connected to the other end of the puncturing portion.

[0010] Optionally, the gripping portion is an annular structure to increase the contact area between the gripping portion and the user's hand, thereby making it easier for the user to use the cotter pin.

[0011] Optionally, the width of the connecting portion is greater than the width of the puncturing portion, so that the puncturing portion can pass through the spring.

[0012] Optionally, two mounting holes are provided on a side wall at one end of the spring buffer away from the limiting hole, and the mounting holes are used to connect external equipment to drive the spring buffer and the spring to move together.

[0013] Optionally, the diameter of the mounting hole is smaller than the diameter of the spring hook.

[0014] Optionally, the diameter of one end of the spring buffer having the mounting hole is smaller than the diameter of the spring hook, so that the position of the spring hook is limited when the spring hook extends into the spring buffer.

[0015] Optionally, the buffer member includes a pressure-relief rod and a connecting member, the pressure-relief rod is inserted into the spring from one side and exits from the other side of the spring, the connecting member is arranged inside the spring, and one end of the connecting member is fixedly connected to the pressure-relief member, and the other end of the connecting member is fixedly connected to the spring hook, so that the tension exerted on the spring hook is transferred to the pressure-relief rod through the connecting member.

[0016] Optionally, the buffer is an integrally formed structure, the buffer is inserted into one side of the spring and exits from the other side of the spring, and the buffer exiting the other side of the spring is connected to the spring hook so that the tension exerted on the spring hook is transferred to the buffer.

[0017] The beneficial effects of the present invention are as follows:

[0018] The protective device for preventing the belt hook spring from breaking off includes a spring and a buffer member, wherein spring hooks for mounting the spring on external equipment are fixedly connected at both ends of the spring, and the buffer member passes through the spring and is connected to the spring hook so that the tension of the spring hook is transferred to the buffer member, wherein the present invention utilizes the spring buffer member to connect the spring hook to realize the docking between the connecting component and the spring, and the cotter pin crosses the limiting hole on the spring buffer member, thereby utilizing the toughness of the cotter pin itself to transfer the tension of the spring hook to the cotter pin, thereby reducing the tension between the cotter pin and the spring hook, thereby extending the service life of the belt hook spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a schematic structural diagram of an embodiment of a protective device for preventing a hook spring from breaking off provided by the present invention;

[0021] Figure 2It is a schematic structural diagram of another embodiment of a protective device for preventing a hook spring from breaking off provided by the present invention;

[0022] Figure 3 It is a front view structural schematic diagram of a protective device for preventing a hook spring from breaking off provided by the present invention;

[0023] Figure 4 It is a structural schematic diagram of the cotter pin provided by the present invention;

[0024] Figure 5 It is a structural schematic diagram of the spring buffer provided by the present invention;

[0025] Figure 6 It is a structural schematic diagram of an embodiment of a buffer member of a protective device for preventing a hook spring from breaking off provided by the present invention;

[0026] Figure 7 It is a schematic structural diagram of another embodiment of the buffer component of the protection device for preventing the belt hook spring from breaking off provided by the present invention. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. It will be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the drawings. 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.

[0028] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0029] See also Figures 1 to 7 , Figure 1 1 is a schematic structural diagram of an embodiment of a protective device 1000 for preventing a hook spring from breaking off provided by the present invention; Figure 2 1 is a schematic structural diagram of another embodiment of a protective device 1000 for preventing a hook spring from breaking off provided by the present invention; Figure 3 It is a front view structural schematic diagram of a protective device 1000 for preventing a hook spring from breaking off provided by the present invention; Figure 4 is a schematic structural diagram of a cotter pin 300 provided by the present invention; Figure 5is a schematic structural diagram of a spring buffer 200 provided by the present invention, Figure 6 1 is a schematic structural diagram of an embodiment of a buffer member 110 of a protective device 1000 for preventing a hook spring from breaking off provided by the present invention. Figure 7 1 is a schematic structural diagram of another embodiment of the buffer component 110 of the protection device 1000 for preventing the hook spring from breaking off provided by the present invention.

[0030] The protective device 1000 for preventing a hook spring from breaking off of the present invention comprises a spring 100 and a buffer 110 .

[0031] Both ends of the spring 100 are fixedly connected with spring hooks 120 for mounting the spring 100 on external equipment. The buffer 110 passes through the spring 100 and is connected to the spring hooks 120 so that the tension of the spring 100 on the spring hooks 120 is transferred to the buffer 110 .

[0032] The buffer 110 includes at least one spring buffer 200 and a cotter pin 300. Two limiting holes 210 are provided on the spring buffer 200. When one end of the spring 100 connected to the spring hook 120 extends into the spring buffer 200, the cotter pin 300 is inserted into the limiting hole 210 so that the spring hook 120 is subjected to the pulling force of the spring 100 and is transferred to the cotter pin 300.

[0033] The spring hook 120 is fixedly connected to one end of the spring 100, and two symmetrical limiting holes 210 are opened on the spring buffer 200. When one end of the spring connected to the spring hook 120 extends into the spring buffer 200, the cotter pin 300 is inserted into the limiting hole 210 so that the spring hook 120 is subjected to the tension of the spring and is transferred to the cotter pin 300. Of course, the two limiting holes 210 can also be asymmetrical.

[0034] Among them, the number of spring buffer members 200 is at least one, and the number of spring hooks 120 is at least one. The number of spring buffer members 200 is the same as the number of spring hooks 120. The specific number of spring buffer members 200 and spring hooks 120 is determined by the type of spring 100. The spring 100 is a single-hook spring or a double-hook spring. The single-hook spring is a spring with one spring hook 120, and the double-hook spring is a spring 100 with spring hooks 120 fixedly connected at both ends.

[0035] In one embodiment, the spring 100 is a single hook spring, and one end of the spring 100 is fixedly connected with a spring hook 120. When the user needs to use the protective device 1000 for preventing the spring with a hook from being disconnected of the present invention, firstly, the end of the spring 100 with the spring hook 120 is inserted into the spring buffer 200. Then the cotter pin 300 is inserted into the limiting hole 210, and the cotter pin 300 first passes through one of the two limiting holes 210 symmetrically arranged, then passes through the spring 100, and finally passes through the other of the two limiting holes 210 to complete the fixing of the spring 100. At this time, when the user passes through the protective device 1000 for preventing the spring with a hook from being disconnected of the present invention, when the spring 100 is stretched and deformed, the present invention transfers the elastic force that should act on the spring hook 120 to the cotter pin 300, and the cotter pin 300 is inserted into the limiting hole 210, and the cotter pin 300 can withstand more tensile force, so that the spring hook 120 will not be broken, thereby improving the service life of the single hook spring.

[0036] Please continue reading Figures 1 to 7 Of course, in another embodiment, the spring is a double-hook spring, and both ends of the spring 100 are fixedly connected with spring hooks 120. When the user needs to use the protective device 1000 of the present invention to prevent the spring with hook from breaking off, first, the two ends of the spring 100 with the spring hooks 120 are respectively extended into different spring buffers 200, and then the two cotter pins 300 are respectively inserted into the limiting holes 210 of the two spring buffers 200. The cotter pin first passes through one of the two symmetrically arranged limiting holes 210, then passes through the spring 100, and finally passes through the other of the two limiting holes 210 to complete the fixation of the spring 100. At this time, when the user uses the protective device 1000 for preventing the spring with hook from breaking off of the present invention, when the spring 100 is pulled and deformed, the present invention transfers the elastic force that should act on the spring hook 120 to the cotter pin 300, and the cotter pin 300 is inserted into the limiting hole 210. The cotter pin 300 can withstand more pulling force, so that the spring hook 120 will not break, thereby improving the service life of the double hook spring.

[0037] The split pin 300 includes a grabbing portion 310 , a connecting portion 320 , and a puncturing portion 330 . The grabbing portion 310 is fixedly connected to one end of the connecting portion 320 , and the puncturing portion 330 is fixedly connected to the other end of the puncturing portion 330 .

[0038] The gripping portion 310 is an annular structure to increase the contact area between the gripping portion 310 and the user's hand, thereby facilitating the user to use the cotter pin 300 .

[0039] Please continue reading Figures 1 to 7 The width of the connecting portion 320 is greater than the width of the puncturing portion 330 , so that the puncturing portion 330 can pass through the spring 100 .

[0040] Among them, the width of the connecting part 320 is greater than the width of the puncture part 330 so that the connecting part 320 can withstand more external force, that is, when the cotter pin 300 is connected to the limiting hole 210, the connecting part 320 of the cotter pin 300 passes through the spring 100. When the spring 100 is deformed, the elastic force is mainly applied to the connecting part 320. The width of the connecting part 320 is greater than the width of the puncture part 330, which can further improve the service life of the cotter pin 300.

[0041] At the same time, the puncture portion 330 is smaller in width than the connecting portion 320. When the cotter pin 300 is connected to the limiting portion, the puncture portion 330 first contacts the spring 100. The small width of the puncture portion 330 can easily pass through the spring 100, so that the connecting portion 320 and the grasping portion 310 also move with the puncture portion 330. It can be seen that the small volume of the puncture portion 330 is to facilitate the entire cotter pin 300 to pass through the spring 100 through the limiting hole 210, so as to complete the fixation of the cotter pin 300 to the spring 100.

[0042] Two mounting holes 220 are defined on a side wall of the spring buffer 200 at one end away from the limiting hole 210 .

[0043] Specifically, the spring hook 120 is a circular ring structure. When the spring 100 is inserted into the spring buffer 200, the spring hook 120 corresponds to the mounting hole 220, so that the external device can be connected to the protective device 1000 for preventing the spring with hook from breaking through the mounting hole 220.

[0044] More specifically, the diameter of the mounting hole 220 is smaller than the diameter of the spring hook 120. When the mounting hole 220 and the spring hook 120 are both circular in shape, the diameter of the mounting hole 220 is smaller than the diameter of the spring hook 120, so that as long as the external equipment can be connected to the mounting hole 220, it will pass through the spring hook 120, thereby facilitating the smooth connection of the protective device 1000 of the present invention for preventing the spring with hook from breaking off.

[0045] The diameter of one end of the spring buffer 200 where the mounting hole 220 is opened is smaller than the diameter of the spring hook 120 , so that the position of the spring hook 120 is limited when the spring hook 120 extends into the spring buffer 200 .

[0046] In one embodiment, the spring buffer 200 can be a hollow structure. When the spring 100 is connected to the spring buffer 200, the spring hook 120 in the spring 100 may pass through the spring buffer 200, thereby affecting the installation of the present invention. The diameter of one end of the spring buffer 200 with the mounting hole 220 is smaller than the spring hook 120, so that when the spring hook 120 is connected to the spring 100, the spring hook 120 will be restricted from continuing to move, thereby ensuring that the position of the spring hook 120 corresponds to the position of the mounting hole 220.

[0047] See also Figure 6 In one embodiment, the buffer member 110 includes a pressure-relief rod 400 and a connecting member 410. The pressure-relief rod 400 passes through one side of the spring 100 and passes through the other side of the spring 100. The connecting member 410 is arranged inside the spring 100, and one end of the connecting member 410 is fixedly connected to the pressure-relief member 400, and the other end of the connecting member 410 is fixedly connected to the spring hook 120, so that the tension exerted on the spring hook 120 is transferred to the pressure-relief rod 400 through the connecting member 410.

[0048] See also Figure 7 In another embodiment, the buffer 110 is an integrally formed structure, the buffer 110 is inserted from one side of the spring 100 and passes through the other side of the spring 100, and the buffer 110 passing through the other side of the spring 100 is connected to the spring hook 120, so that the tension exerted on the spring hook 120 is transferred to the buffer 110, that is, the buffer 110 is an integrally formed structure, the middle part of the buffer 110 passes through the spring 100, and the two ends of the buffer 110 are fixedly connected to the spring hook 120, so that the tension exerted on the spring hook 120 is transferred to the buffer 110.

[0049] Please continue reading Figures 1 to 7 The protective device 1000 for preventing the belt hook spring from breaking off includes a spring 100 and a buffer 110. Both ends of the spring 100 are fixedly connected with spring hooks 120 for mounting the spring on external equipment. The buffer 110 passes through the spring 100 and is connected with the spring hook 120, so that the spring hook 120 is subjected to the tension of the spring 100 and is transferred to the buffer 110. In the present invention, the spring buffer 200 is connected to the spring hook 120 to realize the docking between the connecting component and the spring. The cotter pin 300 crosses the limiting hole 200 on the spring buffer, so as to utilize the toughness of the cotter pin 300 itself to transfer the tension of the spring 100 on the spring hook 120 to the cotter pin 300, thereby reducing the tension between the cotter pin 300 and the spring hook 120, thereby extending the service life of the belt hook spring.

[0050] The above description is only an implementation mode of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A protective device for preventing a hook spring from breaking off, characterized in that include: A spring and a buffer, wherein both ends of the spring are fixedly connected with spring hooks for mounting the spring on external equipment, and the buffer passes through the spring and is connected to the spring hook, so that the spring hook is subjected to the pulling force of the spring and is transferred to the buffer; The buffer comprises at least one spring buffer and a split pin, the spring buffer is provided with two limiting holes, when one end of the spring connected with the spring hook extends into the spring buffer, the split pin is inserted into the limiting hole, so that the spring hook is subjected to the pulling force of the spring and is transferred to the split pin; The split pin comprises a grasping portion, a connecting portion and a piercing portion, wherein the grasping portion is fixedly connected to one end of the connecting portion, and the piercing portion is fixedly connected to the other end of the connecting portion; The gripping portion is an annular structure to increase the contact area between the gripping portion and the user's hand, thereby facilitating the user to use the cotter pin; The width of the connecting portion is greater than the width of the puncturing portion, so that the puncturing portion can pass through the spring.

2. The protective device for preventing the hook spring from breaking off according to claim 1, characterized in that: Two mounting holes are arranged on a side wall of one end of the spring buffer away from the limiting hole, and the mounting holes are used to connect external equipment to drive the spring buffer and the spring to move together.

3. The protective device for preventing the hook spring from breaking off according to claim 2, characterized in that: The diameter of the mounting hole is smaller than the diameter of the spring hook.

4. The protective device for preventing the hook spring from breaking off according to claim 2, characterized in that: The diameter of one end of the spring buffer having the mounting hole is smaller than the diameter of the spring hook, so that the position of the spring hook is limited when the spring hook extends into the spring buffer.

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