A wiring harness bracket structure

Abstract

The present application relates to a wiring harness bracket structure suitable for a fuel cell stack, comprising a first bracket and a second bracket; the first bracket is symmetrically provided with ridges on both sides of the side close to the second bracket, and a slot is provided between the ridges on both sides; a plurality of blind holes are evenly provided in the slots, and the plurality of blind holes are evenly spaced and arranged on the same horizontal line; the second bracket is evenly provided with a plurality of bosses on the side close to the first bracket, and a through hole is provided at the geometric center of each boss; the through holes are provided in a one-to-one correspondence with the blind holes; a fastening screw is provided in the through hole, and the second bracket is provided on the blind hole through the fastening screw; a gap is provided between the second bracket and the first bracket to accommodate the fuel cell stack inspection line, and the gap is adapted to the diameter of the inspection line. The present application has a simple structure and reliable performance, and can meet the needs of actual use.

Description

Technical Field

[0001] The present invention relates to the technical field of fuel cells, and in particular to a wiring harness bracket structure. Background Art

[0002] Fuel cells are chemical devices that convert the chemical energy of fuel directly into electrical energy. During static reaction testing, the fuel cell stack has numerous wiring harnesses connecting the plates for voltage detection. For convenience and accuracy, a one-plate-per-test or even two-plate-per-test approach is typically used. This makes it very easy for pins to fall off during wiring harness installation.

[0003] Currently, the wiring harnesses used in static stack reaction tests are often secured directly with tape to prevent them from falling off, making them difficult to secure during subsequent vibration and impact testing. Existing wiring harness holders include molded plastic clamps and multi-rod assembly fixtures. While these fixtures can secure the wiring harness, they are complex, expensive, and lack versatility. Each assembly and disassembly requires significant time, making single-person operation impossible, and they occupy a significant amount of space, resulting in a waste of resources.

[0004] Moreover, as hydrogen fuel cell stacks and systems are rapidly iteratively upgraded to high power, the number of voltage inspection lines is also increasing with the increase in the number of fuel cell stack plates. The space available for the arrangement of inspection wiring harnesses inside existing stack modules is small, and the wiring harness stability is poor. Inspection wiring harnesses are mostly fixed by welding, gluing, or plug-in methods. To facilitate research and development, early R&D tests often use plug-in inspection lines that are easy to disassemble. However, the plug-in structure is prone to misalignment, short circuits, poor contact, and even falling off. This is especially prone to falling off during vibration or impact tests, which greatly affects the accuracy and precision of the test and causes incorrect or lost test information when the battery is in use. Summary of the Invention

[0005] Based on this, the present invention provides a wiring harness bracket structure that aims to solve the technical problems of existing inspection wiring harness brackets, such as complex structure, low matching degree, high cost, inconvenience in stack assembly, low assembly efficiency and production capacity, and easy waste of module internal space. The present invention has a simple structure, reliable performance, and simple processing technology. While ensuring product performance, it can greatly reduce production costs and better meet the needs of actual use.

[0006] To achieve the above objectives, the embodiments of the present invention propose the following technical solutions:

[0007] A wiring harness bracket structure, suitable for a fuel cell stack, comprising a first bracket and a second bracket;

[0008] The first bracket is symmetrically provided with side ridges on both sides of the side close to the second bracket, and a slot is provided between the side ridges on both sides; a plurality of blind holes are evenly provided in the slots, and the plurality of blind holes are arranged at equal intervals and on the same horizontal line;

[0009] The second bracket is evenly provided with a plurality of bosses on a side surface close to the first bracket, and a through hole is provided at the geometric center of each boss; the through holes are provided in a one-to-one correspondence with the blind holes; a fastening screw is provided in each through hole, and the second bracket is provided on the blind hole by the fastening screw;

[0010] When the second bracket is fixed on the blind hole, a gap for accommodating the fuel cell stack inspection line is provided between the second bracket and the first bracket, and the gap is adapted to the diameter of the inspection line.

[0011] As a preferred embodiment, the length of the gap is greater than or equal to the sum of the diameters of the fuel cell stack inspection lines.

[0012] As a preferred embodiment, a threaded sleeve is provided in the blind hole, and the through hole is a countersunk hole; the end of the fastening screw is threadedly connected to the threaded sleeve.

[0013] As a preferred embodiment, the plurality of bosses are arranged at equal intervals, and the plurality of bosses are arranged on the same horizontal line.

[0014] As a preferred embodiment, the length of the boss is the same as the width of the second bracket.

[0015] As a preferred embodiment, the height of the boss is respectively adapted to the diameter of the inspection line and the hardness of the inspection line.

[0016] As a preferred embodiment, the depth of the slot is adapted to the diameter of the inspection line.

[0017] As a preferred embodiment, the side of the ridge away from the first bracket is set to be an arc transition fillet.

[0018] As a preferred embodiment, the corners of the first bracket in contact with the inspection line and the corners of the second bracket in contact with the inspection line are both rounded; the corners of the second bracket are chamfered.

[0019] As a preferred embodiment, one end of the first bracket is provided with at least two transverse waist-shaped holes, and the two transverse waist-shaped holes are arranged side by side up and down; the other end of the first bracket is provided with at least two fixing holes, and the two fixing holes are arranged side by side up and down; and the transverse waist-shaped holes are arranged in a one-to-one correspondence with the fixing holes.

[0020] As a preferred embodiment, one end of the first bracket is arranged on the first end plate (i.e., the front end plate) of the fuel cell stack through the transverse waist-shaped hole, and the other end is arranged on the second end plate (i.e., the rear end plate) of the fuel cell stack through the fixing hole; and the first bracket is arranged on the insulating plate (i.e., the rear insulating plate) of the fuel cell stack.

[0021] As a preferred embodiment, the first bracket and the second bracket are both insulating brackets; the inspection line is a pin-type inspection line; and the fastening screw is a hexagon socket screw or a countersunk screw.

[0022] The beneficial effects achieved by the present invention are as follows: By connecting the first bracket with the second bracket, the pin-type inspection lines are pressed tightly against the harness bracket in a row-like order, and the connection of the inspection lines is stable and the contact is good, thereby ensuring the normal transmission of the inspection signal. The pin-type inspection lines are fixed by pressing, so that the inspection lines will not be displaced longitudinally. Since space is reserved according to the diameter of the inspection lines, all the inspection lines are not prone to cross-folding when arranged longitudinally, which can ensure the stability of the inspection harness connection and prevent the harness from falling off. At the same time, it is convenient to disassemble and assemble the inspection lines in groups, and it is convenient to inspect and maintain the inspection lines on the test bench. The present application has a simple structure, reliable performance, high disassembly and assembly efficiency, low cost, and simple operation. It can make the entire fuel cell stack have better performance, better meet the needs of actual use, and can be directly used in voltage detection and other tests of the fuel cell stack. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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.

[0024] Figure 1 This is a structural diagram of a wiring harness support structure according to an embodiment of the present invention;

[0025] Figure 2 for Figure 1 A structural schematic diagram of the wiring harness bracket structure in use;

[0026] Figure 3 for Figure 1 A schematic structural diagram of a first bracket of a wiring harness bracket structure;

[0027] Figure 4 for Figure 1 Schematic diagram of the structure of the second bracket of the wiring harness bracket structure.

[0028] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0030] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom...), then the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0031] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0032] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element.

[0033] 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 specified as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is 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.

[0034] Specifically, such as Figures 1 to 4As shown, an embodiment of the present invention provides a wiring harness bracket structure suitable for a fuel cell stack, comprising a first bracket 10 and a second bracket 20;

[0035] The first bracket 10 is symmetrically provided with side ridges 11 on both sides of the side close to the second bracket 20, and a slot 12 is provided between the side ridges 11 on both sides; a plurality of blind holes 13 are evenly provided in the slot 12, and the plurality of blind holes 13 are arranged at equal intervals and on the same horizontal line;

[0036] The second bracket 20 has a plurality of bosses 21 evenly disposed on a side surface adjacent to the first bracket 10. A through hole 211 is disposed at the geometric center of each boss 21. The through holes 211 correspond to the blind holes 13 in a one-to-one manner. A fastening screw 30 is disposed in each through hole 211, and the second bracket 20 is secured to the blind hole 13 via the fastening screw 30.

[0037] When the second bracket 20 is fixed to the blind hole 13, a gap 50 is provided between the second bracket 20 and the first bracket 10 to accommodate the fuel cell stack inspection line 40, and the gap 50 is adapted to the diameter of the inspection line 40 (i.e., the size of the gap 50 is slightly larger than the diameter of the inspection line 40 to ensure an effective assembly. For example, when the diameter of the inspection line 40 is 2.2 mm, the size of the gap 50 is 3.0 mm).

[0038] As a preferred embodiment, the length of the gap 50 is greater than or equal to the sum of the diameters of the fuel cell stack inspection lines 40. In this way, it can be ensured that the number of inspection lines 40 used meets actual usage needs.

[0039] As a preferred embodiment, a threaded sleeve (not shown) is provided in the blind hole 13, and the through hole 211 is a countersunk hole; the end of the fastening screw 30 is threadedly connected to the threaded sleeve. Fixing with the threaded sleeve can effectively prevent the blind hole 13 from slipping or losing its threads due to insufficient strength of the bracket material, and can effectively ensure the stability of the connection. The through hole 211 is configured as a countersunk hole, which can effectively save the internal space of the fuel cell stack and effectively improve the space utilization of the stack.

[0040] As a preferred embodiment, multiple bosses 21 are arranged at equal intervals and on the same horizontal line. The bosses 21 enable direct contact and fixation between the first bracket 10 and the second bracket 20, providing support while also providing space for the wiring harness. Furthermore, the bosses divide the gap into multiple equally spaced gaps, allowing the wiring harness to be arranged in sections. This reduces misalignment and allows the user to configure the appropriate number of components based on actual needs, making assembly and disassembly easier and more efficient.

[0041] As a preferred embodiment, the length of the boss 21 is the same as the width of the second bracket 20 .

[0042] As a preferred embodiment, the height of the boss 21 is adapted to the diameter and hardness of the inspection wire 40. Generally, the height of the boss 21 is slightly greater than the diameter of the inspection wire 40 and adapted to the coiling hardness of the inspection wire 40, thereby providing a more appropriate clamping force for the inspection wire 40 to be fixed.

[0043] As a preferred embodiment, the depth of the slot 12 is adapted to the diameter of the inspection line 40 .

[0044] As a preferred embodiment, the side of the ridge 11 away from the first bracket 10 is set as an arc transition fillet. By setting the ridge 11, the winding and bending direction of the inspection line 40 can be well constrained so that it can be placed side by side in a predetermined direction.

[0045] As a preferred embodiment, the corners where the first bracket 10 and the inspection line 40 contact, as well as the corners where the second bracket 20 and the inspection line 40 contact, are both rounded. The corners of the second bracket 20 are chamfered 22. This prevents excessive damage to the outer covering of the inspection line 40, effectively extending the service life of the inspection line 40 while also providing appropriate compression force for the inspection line 40. The chamfers 22 effectively prevent the wiring harness from being crushed.

[0046] As a preferred embodiment, one end of the first bracket 10 is provided with at least two transverse waist-shaped holes 14, and the two transverse waist-shaped holes 14 are arranged side by side up and down; the other end of the first bracket 10 is provided with at least two fixing holes 15, and the two fixing holes 15 are arranged side by side up and down; and the transverse waist-shaped holes 14 and the fixing holes 15 are arranged in a one-to-one correspondence.

[0047] In the embodiment of the present application, the transverse waist-shaped hole 14 refers to a waist-shaped hole extending along both ends of the first bracket 10. In this way, even if height errors occur after the stacking of the cables, the fixation and stability of the harness bracket can be ensured.

[0048] As a preferred embodiment, one end of the first bracket 10 is arranged on the first end plate (i.e., the front end plate) of the fuel cell stack through the transverse waist-shaped hole 14, and the other end is arranged on the second end plate (i.e., the rear end plate) of the fuel cell stack through the fixing hole 15; and the first bracket 10 is arranged on the insulating plate (i.e., the rear insulating plate) of the fuel cell stack.

[0049] The side of the first end plate is provided with a groove, and the first bracket is fixed in the groove. The depth of the groove can be adjusted according to the thickness of the first bracket and the length of the inspection needle plug, so as to ensure the stability of the inspection needle line contact and prevent it from bending.

[0050] As a preferred embodiment, the first bracket 10 and the second bracket 20 are both insulating brackets; the inspection line 40 is a pin-type inspection line; and the fastening screw 30 is a hexagon socket screw or a countersunk screw. For example, the bracket can be made of epoxy glass fiber insulating material.

[0051] The present application connects the first bracket 10 with the second bracket 20 so that the pin-type inspection lines are pressed tightly against the harness bracket in a row-like order. The connection of the inspection lines is stable and the contact is good, thereby ensuring the normal transmission of the inspection signal. The pin-type inspection lines are fixed by pressing so that the inspection lines will not be displaced longitudinally. Since space is reserved according to the diameter of the inspection lines, all the inspection lines are not prone to cross-folding when arranged longitudinally, which can ensure the stability of the inspection harness connection and prevent the harness from falling off. At the same time, it is convenient to disassemble and assemble the inspection lines in groups, and it is convenient to inspect and maintain the inspection lines on the test bench. The present application has a simple structure, reliable performance, high disassembly and assembly efficiency, low cost, and simple operation. It can make the entire fuel cell stack have better performance and better meet the needs of actual use. It can be directly used in voltage detection and other tests of the fuel cell stack.

[0052] In this specification, reference to terms such as "one embodiment" or "example" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0053] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0054] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the inventive 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 wiring harness support structure, characterized in that: Applicable to a fuel cell stack, comprising a first bracket and a second bracket; The first bracket is symmetrically provided with side ridges on both sides of the side close to the second bracket, and a slot is provided between the side ridges on both sides; a plurality of blind holes are evenly provided in the slots, and the plurality of blind holes are arranged at equal intervals and on the same horizontal line; The second bracket is evenly provided with a plurality of bosses on a side surface close to the first bracket, and a through hole is provided at the geometric center of each boss; the through holes are provided in a one-to-one correspondence with the blind holes; a fastening screw is provided in each through hole, and the second bracket is provided on the blind hole by the fastening screw; When the second bracket is fixed to the blind hole, a gap for accommodating the fuel cell stack inspection line is provided between the second bracket and the first bracket, and the gap is adapted to the diameter of the inspection line; The length of the gap is greater than or equal to the sum of the diameters of the fuel cell stack inspection lines; The plurality of bosses are arranged at equal intervals and on the same horizontal line.

2. The wire harness support structure according to claim 1, characterized in that: A screw sleeve is provided in the blind hole, and the through hole is a countersunk hole; the end of the fastening screw is threadedly connected to the screw sleeve.

3. The wire harness support structure according to claim 1, characterized in that: The length of the boss is the same as the width of the second bracket; The height of the boss is respectively adapted to the diameter of the inspection line and the hardness of the inspection line; the depth of the slot is adapted to the diameter of the inspection line.

4. The wire harness support structure according to claim 1, characterized in that: The side of the ridge away from the first bracket is set to be an arc transition fillet.

5. The wire harness support structure according to claim 1, characterized in that: The corners of the first bracket in contact with the inspection line and the corners of the second bracket in contact with the inspection line are both rounded; the corners of the second bracket are chamfered.

6. The wire harness support structure according to claim 1, characterized in that: One end of the first bracket is provided with at least two transverse waist-shaped holes, and the two transverse waist-shaped holes are arranged side by side up and down; the other end of the first bracket is provided with at least two fixing holes, and the two fixing holes are arranged side by side up and down; and the transverse waist-shaped holes are arranged in one-to-one correspondence with the fixing holes.

7. The wire harness support structure according to claim 6, characterized in that: One end of the first bracket is arranged on the first end plate of the fuel cell stack through the transverse waist-shaped hole, and the other end is arranged on the second end plate of the fuel cell stack through the fixing hole; and the first bracket is arranged on the insulating plate of the fuel cell stack.

8. The wire harness support structure according to claim 1, characterized in that: The first bracket and the second bracket are both insulating brackets; the inspection line is a pin-type inspection line; The fastening screw is a countersunk screw.

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