Top expansion wire clamp for electric power combined cabinet

By designing the angle between the bolt hole and the fixed petal and the pulling effect of the bolt assembly, the problem of clamping failure of the top expansion clamp is solved, and more stable cable fixation is achieved.

CN223334316UActive Publication Date: 2025-09-12ZHEJIANG QIANGLI POWER FITTINGS CO LTD
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Patent Information

Application Number
CN202422593802.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-28
Publication Date
2025-09-12
Estimated Expiration
2034-10-28

AI Technical Summary

Technical Problem

During operation, the clamping action of a conventional top expansion clamp is only downward pressure, which can easily lead to clamping failure and slippage.

Method used

Two semi-cylindrical fixing petals are designed, and the central axis of the bolt hole forms an angle of 60 to 85 degrees with the central axis of the fixing petal. The bolt assembly forms a pulling effect, and the fixing groove of the bolt hole restricts the bolt and nut, providing a pulling and snap-on fixing effect.

Benefits of technology

It improves the fixing effect of the cable, avoids clamping failure and slippage, and provides a more stable clamping force.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a top expansion wire clamp for an electric power combined cabinet, and the top expansion wire clamp is characterized in that a fixed petal is in a semi-cylindrical shape, a bolt hole penetrating through the thickness direction is formed in the middle of the circumferential direction of the outer wall of the fixed petal, the central axis of the bolt hole and the central axis of the fixed petal intersect, and an included angle of 60-85 degrees is formed between the central axis of the bolt hole and the central axis of the fixed petal, the forming angle of the fixed petals in the circumferential direction ranges from 170 degrees to 179 degrees; according to the top expansion wire clamp for the electric power combined cabinet provided by the utility model, the central axis of the bolt hole and the central axis of the fixed petal intersect and form the included angle of 60-85 degrees, so that the bolt assembly can form an opposite-pulling effect, the fixed petal is pulled back while the fixed petal is pressed down, and the fixed petal can form an approximate buckling effect; and an external cable can be better fixed by the two fixing petals. The forming angle of the fixing petals in the circumferential direction ranges from 170 degrees to 179 degrees, and when the two fixing petals are closed, the situation that the normal clamping effect is interfered due to the fact that the fixing petals abut against each other abnormally in the circumferential direction is avoided.
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Description

Technical Field

[0001] The utility model relates to the field of wire clamps, in particular to a top expansion wire clamp for power cabinets. Background Art

[0002] A wire clamp is a tool or device used to secure wires such as wires, cables, or ropes. It prevents them from loosening, falling off, or being blown by the wind, ensuring they are neatly and securely fixed in place. Wire clamps come in a variety of shapes and sizes, suitable for different occasions and needs. Key types include card clamps, crimp clamps, spring clamps, insulated clamps, and tubular clamps. Different types of clamps serve specific functions in different scenarios.

[0003] An expansion clamp is a device used to secure cables or wires. It mechanically expands during installation to ensure the wires are securely clamped in place. These clamps are commonly used in line installation and maintenance work in the power and telecommunications sectors.

[0004] During the working process of the top expansion wire clamp, the conventional wire clamp only has the downward clamping action, which can easily cause the clamping to fail and slide. Utility Model Content

[0005] The main purpose of the utility model is to provide a top expansion wire clamp for power cabinet connection, aiming to solve the problem that during the operation of the top expansion wire clamp, the conventional wire clamp only has the downward clamping action, which easily causes the clamping failure and sliding.

[0006] In order to achieve the above-mentioned object, the utility model provides a top expansion clamp for power cabinet connection, comprising:

[0007] Two fixing petals, each of which is semi-cylindrical, with a bolt hole penetrating the thickness of the outer wall of the fixing petal provided in the middle of the circumference, the central axis of the bolt hole intersecting with the central axis of the fixing petal and forming an angle of 60 to 85 degrees, wherein the forming angle of the fixing petal in the circumferential direction is between 170 and 179 degrees;

[0008] A bolt assembly comprising a bolt, a nut and a first washer, wherein the bolt comprises a stem portion and a cap portion connected to each other, and the bolt passes through the two bolt holes on the two embracing fixing petals and is combined with the nut and the first washer;

[0009] Wherein, a fixing groove is provided at the position of the bolt hole located on the outer wall of the fixing petal, and the fixing groove is used to limit the bolt and the nut.

[0010] Furthermore, the central axis of the bolt hole passes through the midpoint of the length direction of the central axis of the fixed petal.

[0011] Furthermore, the inner cross-section of one end of the bolt hole in the length direction of the fixed petal has a uniform diameter to form a columnar wall end, and the inner cross-section of the other end gradually shrinks in the direction pointing outward to form a conical wall end.

[0012] Furthermore, an inner wall at one end of the fixed flap in the length direction forms an angle of 1 to 3 degrees with the central axis of the fixed flap.

[0013] Furthermore, the diameter of the rod portion is consistent with the inner diameter of the bolt hole.

[0014] Furthermore, the nut is hexagonal, the fixing groove fixes the nut in the circumferential direction of the nut, and the bolt is rotated so that its cap part and the inner wall of the fixing groove are in clearance fit.

[0015] Furthermore, the bolt assembly also includes a second gasket corresponding to the cap portion of the bolt.

[0016] Furthermore, the materials of the fixing flap and the fixing flap are both made of aluminum, copper or stainless steel.

[0017] Furthermore, the forming angle of the fixed flap in the circumferential direction is between 175 and 178 degrees.

[0018] The top cable expansion clamp for power cabinets provided by this utility model has a bolt hole whose central axis intersects with the central axis of the fixed flap at an angle of 60 to 85 degrees. This allows the bolt assembly to create a pulling effect, not only pressing the fixed flap downward but also pulling it back, creating a nearly snap-fit ​​effect, allowing the two fixed flaps to better secure external cables. The fixed flaps have a circumferential angle of between 170 and 179 degrees. When the two fixed flaps are engaged, they do not cause abnormal circumferential contact that would interfere with the normal clamping effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the fixed flap in the top expansion clamp for power cabinet connection according to the first embodiment of the present utility model;

[0020] Figure 2 This is a schematic diagram of the use of the top expansion clamp for power cabinets in the first embodiment of the utility model;

[0021] Figure 3 This is a schematic diagram of a bolt assembly in a top expansion clamp for power cabinet connection according to the first embodiment of the present utility model;

[0022] Figure 4 This is a schematic diagram (cross section) of the use of a top expansion clamp for power cabinets according to the first embodiment of the present utility model;

[0023] Figure 5This is a schematic diagram (cross section) of a fixed flap in a top expansion clamp for power cabinet connection according to a second embodiment of the present utility model;

[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] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0026] Those skilled in the art will understand that, unless expressly stated otherwise, the singular forms "a", "an", "said", "above" and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present utility model refers to the presence of the features, integers, steps, operations, elements, units, modules and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, units, modules, components and / or groups thereof. It should be understood that when we refer to an element as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements. In addition, "connected" or "coupled" as used herein may include wireless connection or wireless coupling. The term "and / or" used herein includes all or any unit and all combinations of one or more associated listed items.

[0027] Those skilled in the art will understand that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as those generally understood by those skilled in the art in the field to which the present invention belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have meanings consistent with their meanings in the context of the prior art, and will not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0028] Reference Figures 1 to 5 In one embodiment of the present invention, a top expansion clamp for power cabinet connection includes:

[0029] Two fixing petals 100, each of which is semi-cylindrical. A bolt hole 110 is provided in the middle of the outer wall of each fixing petal 100 in the circumferential direction, extending through the thickness of the fixing petal. The central axis of the bolt hole 110 intersects with the central axis of the fixing petal 100 and forms an angle of 60 to 85 degrees. The circumferential forming angle of the fixing petal 100 is between 170 and 179 degrees.

[0030] The bolt assembly 200 includes a bolt 210, a nut 220, and a first washer 230. The bolt 210 includes a stem portion and a cap portion connected to each other. The bolt 210 passes through the two bolt holes 110 on the two embracing fixing petals 100 and is coupled to the nut 220 and the first washer 230.

[0031] The bolt hole 110 is located at the outer wall of the fixing flap 100 and is provided with a fixing groove 111 , and the fixing groove 111 is used to limit the bolt 210 and the nut 220 .

[0032] In the prior art, during the working process of the top expansion wire clamp, the conventional wire clamp only has a downward pressing and clamping action, which easily leads to the situation of clamping failure and sliding.

[0033] The utility model provides a top expansion clamp for power cabinets, comprising two semi-cylindrical fixed flaps 100. A bolt hole 110 extending through the thickness of the fixed flap 100 is provided in the circumferential center of the outer wall. The central axis of the bolt hole 110 intersects the central axis of the fixed flap 100 at an angle of 60 to 85 degrees. The fixed flaps 100 are formed at a circumferential angle of between 170 and 179 degrees. When the two fixed flaps 100 are engaged, they do not abut against each other in the circumferential direction, thereby preventing the normal clamping effect.

[0034] The bolt assembly 200 includes a bolt 210, a nut 220, and a first washer 230. The bolt 210 includes a rod and a cap connected to each other. The bolt 210 passes through two bolt holes 110 in the two interlocking fixing petals 100 and is engaged with the nut 220 and the first washer 230. Because the central axis of the bolt hole 110 intersects with the central axis of the fixing petal 100 at an angle of 60 to 85 degrees, the bolt assembly 200 can create a pulling effect, not only pressing the fixing petal 100 downward but also pulling it back. In this process, the fixing petal 100 can provide a more effective fixing effect. Specifically, the fixing petal 100 can form a snap-fit ​​effect, and the external cable (which can also be a rod structure or a tube structure, etc.) can be more effectively fixed by the two fixing petals 100.

[0035] The bolt hole 110 is located on the outer wall of the fixed flap 100 and is provided with a fixing groove 111, which is used to restrain the bolt 210 and the nut 220. The presence of the fixing groove 111 can prevent the bolt assembly 200 from being excessively exposed, thereby achieving better use effects (electrically or mechanically).

[0036] In summary, because the central axis of the bolt hole 110 intersects the central axis of the fixing flap 100 at an angle of 60 to 85 degrees, the bolt assembly 200 can create a pulling effect. In addition to pressing the fixing flap 100 downward, it also pulls the fixing flap 100 back, creating a nearly snap-fit ​​effect. External cables (which can also be rod structures or tube structures, etc.) can be more effectively secured by the two fixing flaps 100. The circumferential angle of the fixing flap 100 is between 170 and 179 degrees. When the two fixing flaps 100 are engaged, the fixing flaps 100 will not abut against each other in the circumferential direction, thereby preventing them from interfering with the normal clamping effect.

[0037] Reference Figure 5 In one embodiment, the central axis of the bolt hole 110 passes through the midpoint of the length direction of the central axis of the fixing flap 100 .

[0038] In this embodiment, through the arrangement of the above structure, the two fixed petals 100 can be completely aligned in the length direction during the process of embracing each other, which provides convenience for use.

[0039] Reference Figure 5 In one embodiment, the fixing flap 100 has a bolt hole 110 with a uniform inner cross-sectional diameter at one end thereof in the length direction to form a cylindrical wall end 120 , and an inner cross-sectional diameter at the other end thereof gradually decreases in an outward direction to form a conical wall end 130 .

[0040] In this embodiment, the inner walls of the two ends of the fixed flap 100 in the longitudinal direction have two forms. The end with the bolt hole 110 has a uniform cylindrical inner wall, while the end without the bolt hole 110 has a diameter that decreases outward to form a frustum. During use of the top expansion clamp for power cabinets, the two fixed flaps 100 are combined to form a whole, with a cylindrical end 120 corresponding to a conical end 130 in the circumferential direction. The cylindrical end 120 provides the main support for the external cable (which can also be a rod structure or a tube structure, etc.). The conical end 130 and the cylindrical end 120 form a clamping action. Because the bolt assembly 200 is set at an angle, a pulling effect is formed. In addition to providing pressure, the conical end 130 also provides friction along the length direction, and even a snapping force along the length direction. The two fixed flaps 100 can provide a more superior fastening force.

[0041] In one embodiment, an inner wall at one end of the fixing flap 100 in the length direction forms an angle of 1 to 3 degrees with the central axis of the fixing flap 100 .

[0042] In this embodiment, the taper of the tapered wall end 130 on the fixed petal 100 is limited, so as to provide a clamping effect while avoiding poor contact caused by excessive taper.

[0043] In one embodiment, the diameter of the shank portion is consistent with the inner diameter of the bolt hole 110 .

[0044] In this embodiment, the diameters of the rod and bolt hole 110 are aligned. This allows the bolt assembly 200 to more accurately apply force to the two fixed petals 100. Especially in the present invention, where the bolt hole 110 is not perpendicular to the central axis of the fixed petals 100, the accuracy of the fit between the bolt assembly 200 and the fixed petals 100 is crucial to the compression effect of the fixed petals 100.

[0045] Reference Figures 1 to 4 In one embodiment, the nut 220 is hexagonal, the fixing groove 111 fixes the nut 220 circumferentially, and the bolt 210 rotates so that its cap portion is clearance-fitted with the inner wall of the fixing groove 111 .

[0046] In this embodiment, the fixing groove 111 can limit the rotation of the nut 220, thereby reducing the difficulty of installing the bolt assembly 200. At the same time, the size of the cap portion of the bolt 210 is reduced, so that the rotation of the bolt 210 will not be restricted by the fixing groove 111 during installation.

[0047] Reference Figure 3 In one embodiment, the bolt assembly 200 further includes a second gasket 240 corresponding to the cap portion of the bolt 210 .

[0048] In this embodiment, the number of washers in the bolt assembly 200 is increased. Specifically, a second washer 240 is provided at the cap of the bolt 210. The second washer 240 optimizes the fixing effect. In particular, the second washer 240 is made of a softer material, which can, to a certain extent, prevent unnecessary wear on the fixing flap 100 during the rotation and fixing process of the bolt 210.

[0049] In one embodiment, the fixing flap 100 and the fixing flap 100 are both made of aluminum, copper or stainless steel.

[0050] In this embodiment, two suitable material options are provided. Specifically, the material of the fixing flap 100 and the fixing flap 100 should be consistent to avoid electrochemical corrosion. Common hardware materials are aluminum, copper, and stainless steel. Therefore, the top expansion clamp for power cabinets using these materials can meet the needs of most applications.

[0051] In one embodiment, the circumferential molding angle of the fixing flap 100 is between 175 and 178 degrees.

[0052] In this embodiment, the circumferential forming angle of the fixed flap 100 is limited to form a circumferential wrapping as much as possible while avoiding abnormal circumferential abutment between the two fixed flaps 100 when a certain tolerance is generated in dimensional processing.

[0053] In summary, the top expansion clamp for power cabinets provided by the present invention has a pulling effect because the central axis of the bolt hole 110 intersects the central axis of the fixed flap 100 and forms an angle of 60 to 85 degrees. This allows the bolt assembly 200 to create a pulling effect, not only pressing the fixed flap 100 downward but also pulling it back. This creates a nearly buckled effect, allowing the external cables to be more effectively secured by the two fixed flaps 100. The circumferential molding angle of the fixed flap 100 is between 170 and 179 degrees. When the two fixed flaps 100 are engaged, the fixed flaps 100 do not experience abnormal circumferential contact that would interfere with the normal clamping effect.

[0054] The above description is only a preferred embodiment 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 description and drawings of the present invention, 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 top expansion clamp for power cabinets, characterized in that: include: Two fixing petals (100), the fixing petals (100) are semi-cylindrical, a bolt hole (110) is provided in the middle of the outer wall of the fixing petal (100) in the circumferential direction and penetrates the thickness direction, the central axis of the bolt hole (110) intersects with the central axis of the fixing petal (100) and forms an angle of 60 to 85 degrees, wherein the forming angle of the fixing petal (100) in the circumferential direction is between 170 and 179 degrees; A bolt assembly (200) includes a bolt (210), a nut (220), and a first washer (230), wherein the bolt (210) includes a rod portion and a cap portion connected to each other, and the bolt (210) passes through the two bolt holes (110) on the two embracing fixing petals (100) and is combined with the nut (220) and the first washer (230); Wherein, the bolt hole (110) is provided with a fixing groove (111) at a position on the outer wall of the fixing flap (100), and the fixing groove (111) is used to limit the bolt (210) and the nut (220).

2. The top expansion clamp for power cabinet connection according to claim 1 is characterized in that: The central axis of the bolt hole (110) passes through the midpoint of the length direction of the central axis of the fixed flap (100).

3. The top expansion clamp for power cabinet connection according to claim 2, characterized in that: The inner cross-section of one end of the bolt hole (110) in the length direction of the fixing flap (100) is uniform in diameter to form a columnar wall end (120), and the inner cross-section of the other end is gradually reduced in the direction pointing outward to form a conical wall end (130).

4. The top expansion clamp for power cabinet connection according to claim 3, characterized in that: An inner wall at one end of the fixed flap (100) in the length direction forms an angle of 1 to 3 degrees with the central axis of the fixed flap (100).

5. The top expansion clamp for power cabinet connection according to claim 1, characterized in that: The diameter of the rod portion is consistent with the inner diameter of the bolt hole (110).

6. The top expansion clamp for power cabinet connection according to claim 1, characterized in that: The nut (220) is hexagonal, the fixing groove (111) fixes the nut (220) in the circumferential direction of the nut (220), and when the bolt (210) is rotated, the cap portion thereof is clearance-fitted with the inner wall of the fixing groove (111).

7. The top expansion clamp for power cabinet connection according to claim 6, characterized in that: The bolt assembly (200) further includes a second washer (240) at the cap portion corresponding to the bolt (210).

8. The top expansion clamp for power cabinet connection according to any one of claims 1 to 7, characterized in that: The materials of the fixing flap (100) and the fixing flap (100) are both aluminum, both copper or both stainless steel.

9. The top expansion clamp for power cabinet connection according to any one of claims 1 to 7, characterized in that: The molding angle of the fixed flap (100) in the circumferential direction is between 175 and 178 degrees.