A combined weight block, a mounting structure of the weight block and a clutch

Abstract

This utility model belongs to the field of automotive clutch technology, specifically providing a combined counterweight, a counterweight mounting structure, and a clutch. A combined counterweight includes two opposing first blocks and a second block located between the two first blocks. The second block and the first blocks are separable, forming a combinable multi-segment structure. Limiting portions are formed on opposite sides of the two first blocks. The second block can be inserted between the two first blocks and fixed to them, maintaining a predetermined distance between the two first blocks when mounted on a rotating workpiece. This utility model allows for the combination of first and second blocks of different specifications to obtain counterweights of different sizes, shapes, or weights, adapting to mounting slots of different sizes and shapes, and meeting the dynamic balancing requirements of different weights, making it more flexible and convenient to use.

Description

Technical Field

[0001] This application belongs to the field of automotive clutch technology, and more specifically, relates to a combined counterweight, a counterweight mounting structure, and a clutch. Background Technology

[0002] The clutch is a crucial component of an automotive transmission system, its function being to connect and disconnect power between the engine and the transmission, ensuring smooth starting, seamless gear shifting, and preventing overload of the transmission system during vehicle operation. The driven plate of the clutch rotates at high speed during operation. Due to the inherent structure of the components and the precision of their installation, the driven plate may experience vibration and noise due to unbalanced forces during rotation. Vibration and noise can affect driving comfort and also lead to abnormal wear of components, creating safety hazards. Therefore, dynamic balancing testing is necessary when assembling the driven plate assembly.

[0003] Driven plates that fail the dynamic balance test need to be leveled. Current technology for leveling clutch driven plates involves welding a counterweight of appropriate weight onto the driven plate body (i.e., the large steel plate). To facilitate counterweight installation, mounting grooves are provided on the large steel plate for placing the counterweight. The counterweight is placed into the mounting groove, and then the steel plate and counterweight are welded together. However, existing counterweights are single-unit structures, their size and shape cannot be adjusted, and they cannot be matched with different driven plates, resulting in insufficient flexibility in use. Utility Model Content

[0004] Based on the above-mentioned technical problems, this application provides a combined counterweight, a counterweight mounting structure, and a clutch to solve the problems of poor adaptability and insufficient flexibility of the counterweight in the prior art.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0006] In a first aspect, this application provides a combined counterweight for installation on a rotating workpiece. The combined counterweight includes two first blocks and a second block disposed between the two first blocks. Limiting portions are formed on opposite sides of the two first blocks. The second block can be inserted between the two first blocks and fixed to the two first blocks so that the two first blocks maintain a preset distance.

[0007] In one possible implementation, the outer side is defined as the side away from the rotation center of the rotating workpiece, and the inner side is the side close to the rotation center of the rotating workpiece; after the two first blocks are spaced apart by a predetermined distance, the second block can be inserted between the two first blocks from the outside.

[0008] In one possible implementation, the width of the second block remains constant or gradually decreases in the direction from the outside in.

[0009] In one possible implementation, the projection of the second block onto the plane of rotation of the rotating workpiece is rectangular or trapezoidal.

[0010] In one possible implementation, there are multiple second blocks, which are arranged sequentially along the line connecting two first blocks.

[0011] In one possible implementation, weight-reducing holes are provided on the first block and / or the second block.

[0012] In one possible implementation, welding bevels are respectively provided on the outer side of the joint between the first block and the second block.

[0013] In one possible implementation, the side of the limiting portion is formed as one of a slope, a stepped surface, or a comb-shaped surface.

[0014] Compared with the prior art, the beneficial effects of the combined counterweight provided in this application are:

[0015] This application provides a modular counterweight comprising two first blocks arranged opposite each other, and a second block located between the two first blocks. The second block and the first blocks are separable, forming a combinable multi-segment structure. When installed on a rotating workpiece, first blocks and second blocks of different specifications can be combined as needed to obtain counterweights of different sizes, shapes, or weights to fit mounting slots of different sizes and shapes, and to meet the dynamic balancing requirements of different weights, making it more flexible and convenient to use.

[0016] Secondly, this application provides a counterweight mounting structure, including a rotating workpiece and the aforementioned combined counterweight. The outer wall of the rotating workpiece is provided with multiple mounting grooves spaced apart along the circumferential direction. The opposite side walls of the mounting grooves extend into the grooves near the groove openings to form stop portions. The combined counterweight is disposed within the corresponding mounting groove, and the second block is inserted between two first blocks and fixed to the two first blocks. The stop portion abuts against the limiting portion.

[0017] In one possible implementation, the side of the stop portion that abuts against the limiting portion is one of an inclined surface, a stepped surface, or a comb-shaped surface.

[0018] The counterweight installation structure provided in this application includes a rotating workpiece and the aforementioned combined counterweight. In addition to having the advantages of high combination flexibility and good adaptability of the aforementioned combined counterweight, the outer circumferential surface of the rotating workpiece is provided with an installation groove. Due to the presence of the stop part, the groove opening size is smaller than the groove body size. After the combined counterweight is installed, it will not come out of the groove body due to centrifugal force, thus improving the safety during clutch operation.

[0019] Thirdly, this application provides a clutch including the aforementioned counterweight mounting structure, wherein the rotating workpiece is a driven disc. The clutch provided by this application has the same technical effects as the aforementioned counterweight, and will not be described in detail here. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A schematic diagram of the structure of the combined counterweight block installed on the steel sheet provided in the embodiment of this application;

[0022] Figure 2 for Figure 1 Enlarged view of part A in the middle;

[0023] Figure 3 This is a schematic diagram of the structure of Embodiment 1 of the combined counterweight;

[0024] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of the combined counterweight;

[0025] Figure 5 This is a structural schematic diagram of Embodiment 3 of the combined counterweight;

[0026] Figure 6 This is a schematic diagram of the structure of Embodiment 4 of the combined counterweight;

[0027] Figure 7 This is a schematic diagram of the structure of the combined counterweight block installed on the steel sheet in Embodiment 5.

[0028] Figure 8 This is a schematic diagram of the structure of the combined counterweight block installed on the steel sheet in Embodiment 6.

[0029] Figure 9 This is a schematic diagram of the structure of Embodiment 7 of the combined counterweight;

[0030] Figure 10A schematic diagram of the driven disc for assembling friction plates.

[0031] Explanation of reference numerals in the attached figures:

[0032] 10. First block; 11. Limiting part; 111. Inclined surface; 112. Stepped surface; 113. Comb-shaped surface; 12. Welding bevel; 13. Weight reduction hole; 20. Second block; 30. Rotating workpiece; 31. Mounting groove; 311. Stop part; 40. Driven disc assembly; 41. Friction plate. Detailed Implementation

[0033] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0034] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0035] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" or "several" means two or more, unless otherwise explicitly specified.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0038] Please refer to the following: Figures 1 to 10 The following describes a combined counterweight, its mounting structure, and a clutch provided in the embodiments of this application.

[0039] Please see Figures 1 to 9In a first aspect, embodiments of this application provide a combined counterweight for mounting onto a rotating workpiece 30. The combined counterweight includes two first blocks 10 and a second block 20 disposed between the two first blocks 10. Limiting portions 11 are formed on opposite sides of the two first blocks 10. Before mounting onto the rotating workpiece 30, the first blocks 10 and the second block 20 are detachably disposed. The second block 20 can be inserted between the two first blocks 10 and fixed thereto, maintaining a predetermined distance between the two first blocks 10.

[0040] Compared with the prior art, the beneficial effects of the combined counterweight provided in this application embodiment are:

[0041] This application provides a modular counterweight comprising two first blocks arranged opposite each other, and a second block located between the two first blocks. The second block and the first blocks are separable, forming a combinable multi-segment structure. When installed on a rotating workpiece, first blocks and second blocks of different specifications can be combined as needed to obtain counterweights of different sizes, shapes, or weights to fit mounting slots of different sizes and shapes, and to meet the dynamic balancing requirements of different weights. It has high adaptability and is more flexible and convenient to use.

[0042] This application provides a combined counterweight block for installation on a rotating workpiece 30 for dynamic balancing. The rotating workpiece 30 has an installation groove 31. During installation, two first blocks are placed at opposite ends of the installation groove 31, and then a second block 20 is inserted into the gap between the two first blocks 10. The second block 20 and the first blocks 10 are then welded or bonded together to maintain a preset distance between them.

[0043] The combined counterweight provided in this application embodiment is suitable for dynamic balancing of the driven disc assembly 40 (specifically, the steel sheet of the driven disc) of a clutch. Without violating its usage and working principle, it can also be used for dynamic balancing of other rotating parts (such as flywheels).

[0044] like Figure 1 As shown, a mounting groove 31 is provided on the rotating workpiece 30 (i.e., the steel sheet of the driven disc). The groove opening of the mounting groove 31 extends inward to form a stop 311. The shape of the mounting groove 31 is a dovetail groove, a T-shaped groove, or other shapes.

[0045] The combined counterweight consists of two first blocks 10 and at least one second block 20. Before being installed in the mounting slot 31, the first block 10 and the second block 20 are both independent metal blocks, which can be made of carbon steel, cast iron, copper alloy or other metal materials that can be used for counterweight.

[0046] Because friction plates are installed on both sides of the large steel plate of the driven disc, if you want to install the counterweight without removing the friction plates, the counterweight can only be placed into the mounting groove on the outer circumference of the driven disc body and then welded in place. Please refer to [link / reference]. Figure 2 , Figure 7 and Figure 8 The outer side is defined as the side away from the rotation center of the rotating workpiece 30, and the inner side is the side close to the rotation center of the rotating workpiece 30. After the two first blocks 10 are installed into the mounting groove 31, the two first blocks 10 are placed separately on both sides of the mounting groove 31 with a predetermined distance between them. The second block 20 is inserted from the outside between the two first blocks 10 to achieve leveling of the friction plate without disassembling it.

[0047] Compared to the integrated counterweight blocks in the prior art, the combined counterweight block provided in this application embodiment can be installed into the mounting groove 31, which has a small opening but a large groove. After installation, the first block 10 and the second block 20 are welded together. From the perspective of ease of operation for clutch leveling, the combined counterweight block is inserted into the mounting groove 31 on the outer circumference of the driven plate, allowing for leveling without disassembling the friction plate 41, which is more convenient. From the perspective of safety during product use, due to the presence of the stop part 311, even if the counterweight block and the driven plate are not welded together, the counterweight block will not detach from the mounting groove 31, improving the safety of the clutch during use.

[0048] During installation, firstly, place the two first blocks 10 into the two sides of the mounting groove 31 respectively, so that the limiting part 11 and the stop part 311 abut against each other. Then, place the second block 20 into the gap between the two first blocks 10, and finally weld the first blocks 10 and the second block 20 together.

[0049] Understandably, due to the presence of the stop 311, the first block 10 and the second block 20 will not detach from the mounting groove 31 after welding. If necessary, the first block 10 or the second block 20 can be welded to the rotating workpiece 30. This applies when the materials of the first block 10 and the second block 20 are the same as those of the rotating workpiece 30. When the materials of the first block 10 and the second block 20 differ significantly from those of the rotating workpiece 30, welding may not be successful due to the material differences. Therefore, the user can decide whether to weld the rotating workpiece 30 to the first block 10 or the second block 20 based on their own circumstances.

[0050] To ensure that the second block 20 can be smoothly inserted from the outside, please refer to... Figure 4 and Figure 9 In the direction from the outside in, the width of the second block 20 remains constant or gradually decreases. Specifically, the projection of the second block in the plane of rotation of the rotating workpiece is rectangular or trapezoidal.

[0051] like Figures 3 to 9 As shown, in Embodiments 1 to 7, the shape of the limiting part 11 can be varied. The common feature is that the limiting part 11 protrudes from the first block 10 and can form a limit with the stop part 311 of the mounting groove 31 to ensure that the combined counterweight will not detach due to centrifugal force when it rotates at high speed with the rotating workpiece 30.

[0052] Specifically, please refer to Figures 1 to 6 ,as well as Figure 8 The side of the limiting part 11 can form an inclined surface 111, and the overall shape of the combined counterweight is an isosceles trapezoid. Or please refer to Figure 7 The side of the limiting part 11 forms a stepped surface 112 or a similar stepped surface. Alternatively, please refer to... Figure 9 The side of the limiting part 11 forms a comb-shaped surface 113, and the side wall of the corresponding mounting groove 31 forms a comb-shaped groove that is adapted to the limiting part 11.

[0053] The side where the first block 10 and the second block 20 fit together can be a contact surface of a plane, an inclined plane 111, a stepped surface 112, etc. There are no specific restrictions on this, as long as the first block 10 and the second block 20 can be spliced ​​together to form a complete combined counterweight.

[0054] Please see Figure 5 There are multiple second blocks 20, and the multiple second blocks 20 are arranged sequentially along the line connecting the two first blocks 10, with adjacent second blocks 20 abutting each other.

[0055] Please see Figure 2 , Figures 4 to 9 The first block 10 and / or the second block 20 are provided with weight-reducing holes 13, and the number of weight-reducing holes 13 can be one, two or more. The weight-reducing holes 13 can be square holes, circular holes or other shapes of holes.

[0056] By setting different numbers and sizes of weight-reducing holes 13, first blocks 10 and second blocks 20 of different weight specifications can be obtained, which makes it easy to combine them into counterweights of different weights as needed, improving the adaptability of the product and making it more flexible and convenient to use.

[0057] Please see Figure 2 , Figures 4 to 7 Welding bevels 12 are provided on the outer side of the joint between the first block 10 and the second block 20 to facilitate welding the two together.

[0058] Secondly, embodiments of this application provide a counterweight mounting structure, including a rotating workpiece 30 and a combined counterweight. The outer wall of the rotating workpiece 30 is provided with a plurality of mounting grooves 31 spaced apart along the circumferential direction. The two opposite side walls of the mounting grooves 31 extend into the groove near the groove opening to form stop portions 311. The rotating workpiece 30 can be a driven disc, flywheel, or other rotating part that requires dynamic balancing testing and leveling.

[0059] The combined counterweight is disposed in the corresponding mounting groove 31, and the second block 20 is inserted between the two first blocks 10 and fixed to the two first blocks 10. When the combined counterweight is housed in the mounting groove 31, the stop part 311 abuts against the limiting part 11. The side of the stop part 311 used to abut against the limiting part 11 is one of the following: a sloped surface 111, a stepped surface 112, or a comb-shaped surface 113.

[0060] The counterweight installation structure provided in this application includes a rotating workpiece 30 and the above-mentioned combined counterweight. The outer peripheral surface of the rotating workpiece 30 is provided with an installation groove 31. Due to the presence of the stop part 311, the groove opening size of the installation groove 31 is smaller than the groove body size. After the combined counterweight is installed, it will not fall out of the groove body due to centrifugal force, which improves the safety of the rotating workpiece 30 during high-speed rotation.

[0061] Thirdly, this application provides a clutch including the aforementioned counterweight mounting structure. The rotating workpiece 30 is a driven disc, and multiple mounting grooves 31 are evenly spaced on the outer periphery of the steel plates of the driven disc. Friction plates 41 are provided on both sides of the driven disc. The friction plates 41, the driven disc body, etc., together constitute a clutch. Figure 10 The driven disc assembly 40 is shown. During dynamic balancing, a suitable weight of combined counterweight is selected and placed into the mounting groove 31. The first block 10 and the second block 20 are then welded together as a whole. This application relates to an automotive clutch; the clutch structure is prior art and will not be described in detail here.

[0062] In this embodiment, multiple mounting slots 31 are evenly spaced on the outer periphery of the driven disc's steel sheet. The small opening and large body of the mounting slots 31 prevent the counterweight from detaching. The counterweight adopts a split design, which can adapt to mounting slots of different sizes and shapes, and meet the leveling requirements for counterweights of different weights. Furthermore, the counterweight can be installed into the mounting slot with a small opening and a large body, making it less likely to detach during operation and improving the safety of the product during use.

[0063] Depending on the needs, the first or second block can be welded to the driven disk as a single unit, or welding can be omitted. Welding methods can include common welding processes such as laser welding and handheld welding torches.

[0064] It is understood that the parts in the above embodiments can be freely combined or deleted to form different combined embodiments. The specific contents of each combined embodiment will not be repeated here. After this description, it can be considered that the present utility model specification has recorded each combined embodiment and can support different combined embodiments.

[0065] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A modular weight for mounting on a rotating workpiece (30), characterized by, It includes two first blocks (10) and a second block (20). The two first blocks (10) have limiting portions (11) formed on opposite sides of each other. The second block (20) can be inserted between the two first blocks (10) and fixed to the two first blocks (10) so that the two first blocks (10) maintain a predetermined distance.

2. The combined counterweight according to claim 1, characterized in that, After the two first blocks (10) are spaced apart by a predetermined distance, the second block (20) can be inserted from the outside between the two first blocks (10).

3. A modular weight according to claim 1 or 2, wherein, In the direction from the outside to the inside, the width of the second block (20) remains unchanged or gradually decreases.

4. The modular weight of claim 1, wherein, The second block (20) has multiple components, and the multiple second blocks (20) are arranged sequentially along the line connecting the two first blocks (10).

5. The modular weight of claim 1, wherein, Weight reduction holes (13) are provided on the first block (10) and / or the second block (20).

6. A modular weight as defined in claim 1, wherein, The outer side of the joint between the first block (10) and the second block (20) is provided with a welding bevel (12).

7. A modular weight as defined in claim 1, wherein The side of the limiting part (11) is formed by one of the following: a slope (111), a stepped surface (112), or a comb-shaped surface (113).

8. A counterweight mounting structure characterized by comprising: include: A rotating workpiece (30) has a plurality of mounting grooves (31) spaced apart along its outer wall in the circumferential direction. The opposite side walls of each mounting groove (31) extend into the groove near the opening to form stop portions (311). The combined counterweight as described in any one of claims 1-7, wherein the combined counterweight is disposed in the corresponding mounting groove (31), and the second block (20) is inserted between the two first blocks (10) and fixed to the two first blocks (10), and the stop (311) abuts against the limiting part (11).

9. The counterweight mounting structure according to claim 8, wherein The side of the stop (311) that abuts against the limiting part (11) is one of an inclined surface (111), a stepped surface (112), or a comb-shaped surface (113).

10. A clutch, characterized by The mounting structure includes the counterweight as described in claim 8 or 9, wherein the rotating workpiece (30) is a driven disc.

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