Snap spring and busbar

Abstract

The utility model discloses a snap spring and a busbar, and relates to the technical field of busbars, the snap spring is used for limiting a bolt, the bolt comprises a thread portion with threads and a screw portion with a smooth surface, the snap spring comprises a clamping ring and a limiting portion, the clamping ring is provided with an avoiding opening, and the avoiding opening is used for allowing the bolt to penetrate through; the limiting part is arranged on the edge of the receding opening, the limiting part and the clamping ring are arranged in a right-angle mode, the surface of the limiting part in the vertical direction faces the peripheral wall of the screw rod part, and the limiting part is used for limiting the thread part. The snap spring can be installed between the bolt and the hole wall of the connecting hole, and the effect of limiting the bolt is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of busbars, in particular to a clip spring and a busbar. Background Art

[0002] A busbar, a multi-layered conductive connector, plays a crucial role in electronic systems. Its primary function is to connect the power distribution points of multiple circuits, significantly reducing the number of wires required and addressing the challenges of high-density electronic system layouts. It offers excellent features such as low inductance, interference immunity, excellent high-frequency filtering, high reliability, space savings, and simple and quick assembly.

[0003] A busbar primarily consists of a busbar (conductive layer) and an insulating layer, which are assembled, stacked, riveted, and then packaged. The busbar is secured to the electrical equipment with bolts. These bolts are typically inserted into the busbar's connection holes during transportation to facilitate installation. To prevent the bolts from falling out of the connection holes during transportation, a retaining spring can be placed between the unthreaded portion of the bolt and the hole wall.

[0004] However, since the gap between the bolt and the wall of the connecting hole is relatively small, the common retaining rings on the market are not easy to install. Utility Model Content

[0005] The main purpose of the utility model is to provide a retaining spring and a busbar, which are designed to be installed between a bolt and a hole wall of a connecting hole to play the role of limiting the bolt.

[0006] To achieve the above-mentioned purpose, the retaining ring proposed in the present invention is used for limiting the bolt, and the bolt includes a threaded thread portion and a screw portion with a smooth surface. The retaining ring includes a clamping ring and a limiting portion. The clamping ring is provided with an avoidance opening, and the avoidance opening is used to pass the bolt; the limiting portion is arranged at the edge of the avoidance opening, and the limiting portion is arranged at a right angle to the clamping ring. The surface of the limiting portion in the vertical direction faces the outer peripheral wall of the screw portion, and the limiting portion is used to limit the threaded thread portion.

[0007] In one embodiment, the inner diameter of the limiting portion is smaller than the outer diameter of the thread portion and larger than the outer diameter of the screw portion.

[0008] In one embodiment, the length of the limiting portion is greater than the pitch of the thread portion.

[0009] In one embodiment, a guide portion is provided at the connection between the limiting portion and the clamping ring, and a diameter of the guide portion gradually decreases along the direction from the clamping ring to the limiting portion.

[0010] In one embodiment, the clamping ring, the guide portion and the limiting portion are integrally formed.

[0011] In one embodiment, the limiting portion includes a plurality of spring plates, and the plurality of spring plates are spaced apart and arranged at the edge of the avoidance opening.

[0012] In one embodiment, there are multiple guide portions, and one guide portion is disposed between one elastic piece and the clamping ring.

[0013] In one embodiment, the plurality of elastic pieces are evenly distributed along the circumferential direction of the clamping ring.

[0014] In one embodiment, the material of the clamping spring is metal.

[0015] The present invention also provides a busbar, comprising the aforementioned retaining spring, wherein the busbar is provided with a connecting hole, and the bolt passes through the connecting hole and the avoidance opening in sequence, so that the retaining spring limits the bolt.

[0016] The technical solution proposed in this utility model comprises a retaining ring and a limiting portion arranged at right angles to the retaining ring. The retaining ring has a relief opening, and the limiting portion is provided along the edge of the relief opening, which is positioned at right angles to the retaining ring. After the bolt is inserted into the connection hole of the busbar, the retaining ring can be inserted from the bottom of the bolt to the unthreaded screw portion of the bolt. The vertical surface of the limiting portion faces the outer peripheral wall of the screw portion, thereby limiting the bolt. The limiting portion is arranged at right angles to the retaining ring, occupying less radial space and facilitating installation in the narrow gap between the bolt and the connection hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 the structures shown in these drawings without paying any creative work.

[0018] Figure 1 A schematic structural diagram of an embodiment of a busbar provided by the present utility model;

[0019] Figure 2 for Figure 1 Cross-section at AA in the middle;

[0020] Figure 3 for Figure 2 A partial enlarged view of point A in the middle;

[0021] Figure 4 This is a structural schematic diagram of an embodiment of a retaining spring provided by the utility model.

[0022] Description of Figure Numbers:

[0023] 10. Circlip; 1. Circlip; 11. Avoidance; 2. Limiting portion; 21. Spring; 3. Guide portion; 20. Bolt; 100. Busbar; 101. Connecting hole.

[0024] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0025] 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 embodiments described 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 making creative efforts shall fall within the scope of protection of the present invention.

[0026] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0027] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0028] A busbar primarily consists of a busbar (conductive layer) and an insulating layer, which are assembled, stacked, riveted, and then packaged. The busbar is secured to the electrical equipment with bolts. These bolts are typically inserted into the busbar's connection holes during transportation to facilitate installation. To prevent the bolts from falling out of the connection holes during transportation, a retaining spring can be placed between the unthreaded portion of the bolt and the hole wall.

[0029] However, since the gap between the bolt and the wall of the connecting hole is relatively small, the common retaining rings on the market are not easy to install.

[0030] The utility model provides a clamping spring and a busbar, which are designed to be installed between a bolt and a hole wall of a connecting hole, thereby playing the role of limiting the bolt.

[0031] See also Figures 1 to 4 In one embodiment of the present utility model, the retaining spring 10 is used to limit the bolt 20. The bolt 20 includes a threaded portion and a screw portion with a smooth surface. The retaining spring 10 includes a clamping ring 1 and a limiting portion 2. The clamping ring 1 is provided with an avoidance opening 11, and the avoidance opening 11 is used to pass the bolt 20; the limiting portion 2 is provided at the edge of the avoidance opening 11, and the limiting portion 2 is arranged at a right angle to the retaining ring 1. The surface of the limiting portion 2 in the vertical direction faces the outer peripheral wall of the screw portion, and the limiting portion 2 is used to limit the threaded portion.

[0032] In this embodiment, by disposing a retaining spring 10 between the unthreaded portion of the bolt 20 and the wall of the connection hole 101, the bolt 20 can be effectively prevented from falling out of the connection hole 101 during transportation, thereby improving the safety and convenience of transporting the busbar 100. The limiting portion 2 is arranged at a right angle to the retaining ring 1, allowing the retaining spring 10 to be inserted between the bolt 20 and the wall of the connection hole 101. The right-angled position of the limiting portion 2 prevents the retaining spring 10 from being rotated out of the threaded portion of the bolt 20, further preventing the bolt 20 from falling out of the connection hole 101 during transportation, thereby improving the safety and convenience of transporting the busbar 100.

[0033] The retaining ring 10 proposed in the technical solution of the present invention includes a retaining ring 1 and a limiting portion 2 arranged at a right angle to the retaining ring 1. The retaining ring 1 is provided with an escape opening 11, and the limiting portion 2 is provided along the edge of the escape opening 11, which is limited to being arranged at a right angle to the retaining ring 1. After the bolt 20 is inserted into the connection hole 101 on the busbar 100, the retaining ring 10 can be inserted from the bottom of the bolt 20 to the unthreaded screw portion of the bolt 20, and the vertical surface of the limiting portion 2 faces the outer peripheral wall of the screw portion, thereby limiting the bolt 20. The limiting portion 2 is arranged at a right angle to the retaining ring 1, occupying less space in the radial direction, and is easy to install in the narrow gap between the bolt 20 and the connection hole 101.

[0034] In the embodiment of the present invention, the inner diameter of the limiting portion 2 is smaller than the outer diameter of the thread portion and larger than the outer diameter of the screw portion.

[0035] In this embodiment, since the inner diameter of the limiting portion 2 is a value between the outer diameters of the thread portion and the screw portion, the retaining spring 10 will not slide or fall off on the bolt 20 after being installed in place, thereby enhancing safety during transportation.

[0036] In the embodiment of the present invention, the length of the limiting portion 2 is greater than the pitch of the thread portion.

[0037] In this embodiment, the length of the limiting portion 2 is greater than the pitch of the thread portion, that is, greater than the distance between two adjacent threads of the thread portion, which can prevent the limiting portion 2 of the retaining spring 10 from rotating and falling off from the thread portion of the bolt 20, thereby enhancing safety during transportation.

[0038] In the embodiment of the present invention, a guide portion 3 is provided at the connection between the limiting portion 2 and the clamping ring 1 , and the diameter of the guide portion 3 gradually decreases along the direction from the clamping ring 1 to the limiting portion 2 .

[0039] In this embodiment, a guide portion 3 is provided at the connection between the limiting portion 2 and the clamping ring 1. The cross-section of the guide portion 3 is an arc shape, and the diameter of the guide portion 3 gradually decreases along the direction from the clamping ring 1 to the limiting portion 2. When the retaining spring 10 is installed on the bolt 20, the installation is smoother under the guiding action of the guide portion 3.

[0040] In the embodiment of the present invention, the clamping ring 1, the guide portion 3 and the limiting portion 2 are integrally formed.

[0041] In this embodiment, the collar 1, guide portion 3, and stop portion 2 are integrally formed. This integrated design reduces assembly steps during the manufacturing process, reducing production costs and time. Furthermore, the integral formation of the collar 1, guide portion 3, and stop portion 2 improves the stability and durability of the overall structure of the clip 10, reducing the risk of failure due to improper connection.

[0042] In the embodiment of the present invention, the limiting portion 2 includes a plurality of spring pieces 21 , and the plurality of spring pieces 21 are spaced apart and arranged at the edge of the avoidance opening 11 .

[0043] In this embodiment, the provision of multiple spring clips 21 as the limiting portion 2 disperses the force, improving the overall strength and durability of the retaining spring 10 and reducing the risk of structural failure due to fatigue or damage to a single spring clip 21. The spaced arrangement of the spring clips 21 allows for installation and adjustment in different positions to accommodate bolts 20 of varying diameters, thereby enhancing the adaptability and flexibility of the retaining spring 10.

[0044] In the embodiment of the present invention, there are multiple guide portions 3 , and one guide portion 3 is disposed between a spring piece 21 and the clamping ring 1 .

[0045] In this embodiment, a guide portion 3 is connected between each spring piece 21 and the retaining ring 1. When the retaining spring 10 is installed on the bolt 20, each spring piece 21 can be smoothly passed through the bolt 20 under the guiding action of the guide portion 3, making the installation smoother. During installation, each spring piece 21 can be slightly deformed relative to the surface of the retaining ring 1 with the guide portion 3 as the axis, and can be passed through from the thread portion with a larger outer diameter. After passing through, it can return to its original shape and abut against the outer peripheral wall of the screw portion. After being installed in place, the retaining spring 10 will not slide or fall off on the bolt 20, thereby enhancing safety during transportation.

[0046] In the embodiment of the present invention, the plurality of spring pieces 21 are evenly distributed along the circumferential direction of the clamping ring 1 .

[0047] In this embodiment, the multiple spring pieces 21 are evenly spaced along the circumferential direction of the clamping ring 1 , which can evenly disperse and distribute the force, thereby reducing the risk of structural failure caused by fatigue or damage of a single spring piece 21 .

[0048] In the embodiment of the present invention, the material of the clamping spring 10 is metal.

[0049] In this embodiment, the retaining spring 10 is made of metal material, such as aluminum alloy or stainless steel, which has certain elastic deformation performance and is strong, durable and corrosion-resistant.

[0050] The present invention further provides a busbar 100 , comprising the aforementioned retaining ring 10 . The busbar 100 is provided with a connecting hole 101 . The bolt 20 passes through the connecting hole 101 and the avoidance opening 11 in sequence, so that the retaining ring 10 limits the bolt 20 .

[0051] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A retaining spring for a limiting bolt, wherein the bolt comprises a threaded portion and a smooth screw portion, wherein: The retaining spring comprises: A clamping ring, wherein the clamping ring is provided with an escape opening, and the escape opening is used to pass the bolt; and A limiting portion is provided at the edge of the avoidance opening, the limiting portion is provided at a right angle to the clamping ring, the surface of the limiting portion in the vertical direction faces the outer peripheral wall of the screw portion, and the limiting portion is used to limit the thread portion.

2. The retaining spring according to claim 1, wherein: The inner diameter of the limiting portion is smaller than the outer diameter of the thread portion and larger than the outer diameter of the screw portion.

3. The retaining spring according to claim 1, wherein: The length of the limiting portion is greater than the pitch of the thread portion.

4. The circlip according to any one of claims 1 to 3, characterized in that A guide portion is provided at the connection between the limiting portion and the clamping ring, and the diameter of the guide portion gradually decreases along the direction from the clamping ring to the limiting portion.

5. The retaining spring according to claim 4, wherein: The clamping ring, the guide portion and the limiting portion are integrally formed.

6. The retaining spring according to claim 4, wherein: The limiting portion includes a plurality of spring pieces, and the plurality of spring pieces are arranged at intervals on the edge of the avoidance opening.

7. The retaining spring according to claim 6, wherein: There are multiple guide parts, and one guide part is arranged between one elastic piece and the clamping ring.

8. The retaining spring according to claim 6, wherein: The plurality of spring pieces are evenly distributed along the circumferential direction of the clamping ring.

9. The circlip according to any one of claims 1 to 3, characterized in that The material of the clamping spring is metal.

10. A busbar, characterized in that: Including the retaining spring according to any one of claims 1 to 9, the busbar is provided with a connecting hole, and the bolt passes through the connecting hole and the avoidance opening in sequence, so that the retaining spring limits the bolt.

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