Anti-falling balance shaft assembly

Abstract

The utility model relates to the technical field of automobile suspensions, in particular to an anti-disengaging balance shaft assembly which comprises a balance shaft support, a lining, a shaft shell and a blocking assembly. A shaft part is formed on the balance shaft support, the shaft part is sleeved with the lining, the lining is sleeved with the shaft shell, the blocking assembly comprises a check ring and a first cover body, the check ring is arranged on the shaft part in a sleeving mode, the inner side wall of the check ring abuts against the outer end of the lining, the first cover body is detachably connected with one end of the shaft shell, and the second cover body is detachably connected with the other end of the shaft shell. The first cover body abuts against the outer side wall of the check ring. According to the anti-disengaging balance shaft assembly, the blocking assembly is arranged, the lining arranged on the shaft portion of the balance shaft support in the sleeving mode can be blocked through the check ring and the first cover body, the stability of the lining in the using process can be improved, and the lining is effectively prevented from axially moving or even slipping in the using process.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile suspension, especially relates to a kind of anti-drop balance shaft assembly. BACKGROUND

[0002] Balance shaft assembly is the load-bearing structure in automobile suspension system, it is usually installed in the specified position of frame by bolt.Because steel plate spring is installed on balance shaft assembly, as the key elastic element in suspension system, the function of steel plate spring is to slow down vibration and improve the comfort of vehicle.Therefore, steel plate spring needs to be firmly connected with balance shaft support.However, for the balance shaft assembly using composite bushing, steel plate spring is directly fixedly connected with balance shaft shell.

[0003] However, since composite bushing has deformable characteristics, in some complex working conditions, composite bushing may have the risk of sliding along balance shaft support, thereby causing the relative position between balance shaft shell and steel plate spring to deviate, and causing potential safety hazards to personnel and goods. SUMMARY

[0004] The utility model provides a kind of anti-drop balance shaft assembly to solve the defect that, in the balance shaft assembly of prior art, composite bushing can have the risk of sliding along balance shaft support, thereby causing the relative position between balance shaft shell and steel plate spring to deviate, and causing potential safety hazards to personnel and goods.

[0005] The utility model provides a kind of anti-drop balance shaft assembly, comprising: balance shaft support, bushing, shaft shell and blocking component.

[0006] The shaft portion is formed on the balance shaft support, the bushing is sleeved on the shaft portion, the shaft shell is sleeved on the bushing, and the blocking component includes a check ring and a first cover body.The inner side wall of the check ring is in abutment with the outer end of the bushing, the first cover body is detachably connected with one end of the shaft shell, and the first cover body is in abutment with the outer side wall of the check ring.

[0007] According to the anti-drop balance shaft assembly provided by the utility model, the inner wall of the bushing and the outer wall of the shaft portion are clamped and matched to axially limit the bushing.

[0008] According to the anti-drop balance shaft assembly provided by the utility model, the inner wall of the bushing is formed with a first limiting protrusion, and the outer wall of the shaft portion is formed with a first limiting clamping groove, and the first limiting protrusion and the first limiting clamping groove are limitedly matched.

[0009] According to the anti-drop balance shaft assembly provided by the utility model, the outer wall of the bushing and the inner wall of the shaft shell are clamped and matched to axially limit the bushing.

[0010] According to the anti-falling balance shaft assembly, the outer wall of the bushing is formed with a second limiting protrusion, the inner wall of the shaft shell is formed with a second limiting clamping groove, and the second limiting protrusion is in limiting cooperation with the second limiting clamping groove.

[0011] According to the anti-falling balance shaft assembly, the blocking ring is in threaded connection with the shaft part.

[0012] According to the anti-falling balance shaft assembly, the shaft shell comprises a first shaft shell and a second shaft shell, and the first shaft shell and the second shaft shell are oppositely arranged and detachably connected.

[0013] According to the anti-falling balance shaft assembly, the first shaft shell and the second shaft shell are detachably connected through a threaded connecting piece, and the first cover body and the shaft shell are detachably connected through a threaded connecting piece.

[0014] According to the anti-falling balance shaft assembly, a gasket is further arranged between the shaft shell and the balance shaft support to block the gap between the shaft shell and the balance shaft support.

[0015] According to the anti-falling balance shaft assembly, a second cover body is further arranged at the port of the bushing close to the first cover body.

[0016] The anti-falling balance shaft assembly can block the bushing arranged on the shaft part of the balance shaft support by the blocking ring and the first cover body, and the stability of the bushing during use can be improved, and the axial movement or even falling off of the bushing during use can be effectively prevented.

[0017] Additional aspects and advantages of the present application will be described in the following description, some of which will become apparent to those skilled in the art from the following description, some of which will be learned from the following description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0019] Figure 1 is one of the schematic diagrams of the anti-falling balance shaft assembly provided by the embodiments of the present application.

[0020] Figure 2 is the second schematic diagram of the anti-falling balance shaft assembly provided by the embodiments of the present application.

[0021] Figure 3 is the schematic view of the balance shaft support in the anti-falling balance shaft assembly provided by the embodiment of the utility model.

[0022] Figure 4 is the schematic view of the bushing in the anti-falling balance shaft assembly provided by the embodiment of the utility model.

[0023] Figure 5 is the schematic view of the first shaft shell in the anti-falling balance shaft assembly provided by the embodiment of the utility model.

[0024] Figure 6 is the schematic view of the second shaft shell in the anti-falling balance shaft assembly provided by the embodiment of the utility model.

[0025] Figure 7 is the schematic view of the stop ring in the anti-falling balance shaft assembly provided by the embodiment of the utility model.

[0026] Reference signs:

[0027] 10, balance shaft support; 110, shaft part; 111, first limiting slot; 120, frame mounting hole; 130, push rod mounting hole; 20, bushing; 210, first limiting protrusion; 220, second limiting protrusion; 230, opening; 30, shaft shell; 310, first shaft shell; 320, second shaft shell; 330, second limiting slot; 40, blocking assembly; 410, stop ring; 420, first cover body; 50, gasket; 60, second cover body. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the utility model clearer, the technical scheme in the utility model will be described clearly and completely below in combination with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0029] In the description of the embodiments of the utility model, it should be explained that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship shown in the drawings, which is only for the convenience of describing the embodiments of the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore, it cannot be understood as a limitation on the embodiments of the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0030] In the description of the embodiments of the present application, it should be pointed out that, unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0031] In the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0032] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.

[0033] The following will be combined Figures 1 to 7 The anti-falling balance shaft assembly provided by the present application is described.

[0034] Referring to Figure 1 and Figure 2 The anti-falling balance shaft assembly provided by the present application is described.

[0035] The shaft portion 110 is formed on the balance shaft support 10, the bushing 20 is sleeved on the shaft portion 110, the shaft shell 30 is sleeved on the bushing 20, the blocking assembly 40 comprises a blocking ring 410 and a first cover body 420, the blocking ring 410 is sleeved on the shaft portion 110, the inner side wall of the blocking ring 410 abuts against the outer end of the bushing 20, the first cover body 420 is detachably connected with one end of the shaft shell 30, and the first cover body 420 abuts against the outer side wall of the blocking ring 410.

[0036] The anti-disengagement balance shaft assembly provided by the utility model can block the bushing 20 sleeved on the shaft portion 110 of the balance shaft support 10 by the blocking ring 410 and the first cover body 420, can improve the stability of the bushing 20 during use, and can effectively prevent the bushing 20 from moving axially or even disengaging during use.

[0037] Specifically, referring to FIG. Figure 3 According to some embodiments of the utility model, the balance shaft support 10 is provided with a frame mounting hole 120 and a thrust rod mounting hole 130. The frame mounting hole 120 is used for fixing the balance shaft support 10 to an engine frame or a cylinder body, so that the support is stably and firmly connected during engine operation, and displacement or loosening is avoided. The thrust rod mounting hole 130 is used for mounting a thrust rod, the thrust rod limits the axial displacement of the balance shaft by providing axial support, and prevents the balance shaft from deviating or being unstable during rotation. The thrust rod is connected with the support, and axial load is transmitted to the frame or other fixed structures, so that stable operation of the balance shaft is ensured.

[0038] The shaft shell 30 comprises a first shaft shell 310 and a second shaft shell 320 arranged oppositely, and the first shaft shell 310 and the second shaft shell 320 are arranged oppositely and detachably connected. During assembly, after the bushing 20 is sleeved on the shaft portion 110 of the balance shaft support 10, the first shaft shell 310 and the second shaft shell 320 are buckled and connected with each other.

[0039] The detachable connection mode of the first shaft shell 310 and the second shaft shell 320 can be clamping or connection by using a threaded connecting piece (such as a bolt and nut assembly). As a preferred embodiment, the first shaft shell 310 and the second shaft shell 320 are detachably connected by a threaded connecting piece in the embodiment. During assembly, the mounting holes arranged correspondingly on the first shaft shell 310 and the second shaft shell 320 are aligned, and then the threaded connecting piece is fastened, so that assembly and disassembly are simple.

[0040] Similarly, the detachable connection mode of the first cover body 420 and the end portion of the shaft shell 30 can be clamping or connection by using a threaded connecting piece. As a preferred embodiment, the first cover body 420 and the end portion of the shaft shell 30 are detachably connected by a threaded connecting piece in the embodiment. During assembly, the mounting holes arranged correspondingly on the first cover body 420 and the end portion of the shaft shell 30 are aligned, and then the threaded connecting piece is fastened, so that assembly and disassembly are simple.

[0041] The bushing 20 is made of flexible material and has a certain deformation capacity, which can absorb impact and vibration during operation, improve fitting accuracy, reduce friction, and compensate for manufacturing tolerances.

[0042] As shown in Figure 1 According to some embodiments of the present application, the inner wall of the bushing 20 is in clamping engagement with the outer wall of the shaft portion 110 to axially limit the bushing 20.

[0043] By configuring the inner wall of the bushing 20 and the outer wall of the shaft portion 110 in clamping engagement, the bushing 20 fitted on the shaft portion 110 can be effectively axially limited, further improving its stability during use and preventing the bushing 20 from slipping off.

[0044] Specifically, as shown in Figure 1 and Figure 4 According to some embodiments of the present application, the inner wall of the bushing 20 is formed with a first limiting protrusion 210, and the outer wall of the shaft portion 110 is formed with a first limiting slot 111, and the first limiting protrusion 210 is in limiting engagement with the first limiting slot 111.

[0045] By providing a limiting protrusion and a limiting slot structure on the inner wall of the bushing 20 and the outer wall of the shaft portion 110, precise positioning and reliable fixation between the bushing 20 and the shaft portion 110 can be effectively achieved. Specifically, the cooperation of the first limiting protrusion 210 and the first limiting slot 111 can prevent the bushing 20 from moving axially or radially during operation, ensuring that the bushing 20 always remains in the predetermined position. This limiting engagement structure can provide additional stability, avoid loosening of the bushing 20 due to vibration or external impact, and reduce wear and damage caused by displacement.

[0046] In addition, since the bushing 20 is made of flexible material, the design of the limiting protrusion and the slot can also simplify the installation process and improve assembly efficiency.

[0047] As shown in Figure 1 According to some embodiments of the present application, the outer wall of the bushing 20 is in clamping engagement with the inner wall of the shaft housing 30 to axially limit the bushing 20.

[0048] By configuring the outer wall of the bushing 20 and the inner wall of the shaft housing 30 in clamping engagement, the shaft housing 30 can effectively axially limit the bushing 20 fitted on the shaft portion 110, further improving its stability during use and preventing the bushing 20 from slipping off.

[0049] Specifically, as shown in Figure 1 and Figure 4As shown, according to some embodiments of the present utility model, the outer wall of the bushing 20 is formed with a second limiting protrusion 220, and the inner wall of the shaft shell 30 is formed with a second limiting clamping groove 330, and the second limiting protrusion 220 is in limiting cooperation with the second limiting clamping groove 330.

[0050] Similarly, by providing the limiting protrusion and limiting clamping groove structure on the outer wall of the bushing 20 and the inner wall of the shaft shell 30, precise positioning and reliable fixation between the bushing 20 and the shaft shell 30 can be effectively achieved. Specifically, the cooperation of the second limiting protrusion 220 and the second limiting clamping groove 330 can prevent the bushing 20 from axial or radial displacement during operation, ensuring that the bushing 20 always remains in the predetermined position. This limiting cooperation structure can provide additional stability, avoiding loosening of the bushing 20 due to vibration or external impact, reducing wear and damage caused by displacement.

[0051] In addition, since the bushing 20 is made of flexible material, the design of the limiting protrusion and the clamping groove can also simplify the installation process and improve assembly efficiency.

[0052] It should be noted that the number of the first limiting protrusion 210 and the first limiting clamping groove 111 is at least one. When the number of the first limiting protrusion 210 and the first limiting clamping groove 111 is multiple, the first limiting protrusion 210 and the first limiting clamping groove 111 correspond one by one and are arranged in axial intervals, which can further enhance the stability of the shaft sleeve. Similarly, the number of the second limiting protrusion 220 and the second limiting clamping groove 330 is at least one. When the number of the second limiting protrusion 220 and the second limiting clamping groove 330 is multiple, the second limiting protrusion 220 and the second limiting clamping groove 330 correspond one by one and are arranged in axial intervals, which can further enhance the stability of the shaft sleeve.

[0053] Referring to Figure 4 As shown, according to some embodiments of the present utility model, in order to facilitate the installation of the bushing 20 on the shaft part 110, the bushing 20 is provided with an opening 230 along its generatrix direction. During assembly, the opening 230 can be appropriately expanded to facilitate installation.

[0054] Referring to Figure 1 and Figure 2 As shown, according to the anti-disengagement balance shaft assembly provided by the present utility model, the retaining ring 410 is threadedly connected with the shaft part 110.

[0055] By configuring the retaining ring 410 and the shaft part 110 as threadedly connected, during assembly, the retaining ring 410 can be pre-rotated on the front end of the shaft part 110 to achieve pre-fixation. After assembly is completed, the inner side of the first cover body 420 abuts against the outer side wall of the retaining ring 410 to axially limit and fix it, which can improve the stability of the retaining ring 410 during use.

[0056] Specifically, referring to Figure 7As shown in the embodiment, the inner wall of the baffle ring 410 is provided with an internal thread, and the outer end of the shaft portion 110 is provided with an external thread matched with the internal thread.

[0057] Referring to Figure 1 As shown in the embodiment, according to some embodiments of the utility model, the anti-falling balance shaft assembly further comprises a gasket 50 arranged between the shaft housing 30 and the balance shaft support 10 to block the gap between the shaft housing 30 and the balance shaft support 10.

[0058] By arranging the gasket 50 between the shaft housing 30 and the balance shaft support 10, the gap between the shaft housing 30 and the balance shaft support 10 can be blocked, preventing foreign matters from entering the working space of the bushing 20, thereby further improving the stability of the bushing 20 during work.

[0059] Referring to Figure 1 As shown in the embodiment, according to some embodiments of the utility model, the anti-falling balance shaft assembly further comprises a second cover body 60 arranged at the port of the bushing 20 close to the first cover body 420.

[0060] By arranging the second cover body 60, the port of the shaft portion 110 can be blocked, preventing impurities from entering the working position of the baffle ring 410 and the bushing 20 from the other side of the shaft portion 110, protecting the key components such as the bushing 20 and the baffle ring 410 from the invasion of external substances, reducing wear and damage, and ensuring the cleaning and lubrication effect of the working area.

[0061] Specifically, an external thread can be arranged at one end of the second cover body 60 facing the shaft portion 110, and an internal thread can be arranged on the inner wall of the outer end of the shaft portion 110. During assembly, the second cover body 60 can be directly screwed to the outer end of the shaft portion 110, which is simple and convenient to operate.

[0062] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the utility model, but not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for some technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. An anti-backlash balance shaft assembly characterized by, The application relates to a balance shaft support, which comprises a shaft part, a bushing, a shaft shell, a blocking assembly and a second cover. The inner wall of the bushing is in clamping connection with the outer wall of the shaft part, so that the bushing is axially limited. The inner wall of the bushing is provided with a first limiting protrusion, and the outer wall of the shaft part is provided with a first limiting clamping groove. The outer wall of the bushing is in clamping connection with the inner wall of the shaft shell, so that the bushing is axially limited. The outer wall of the bushing is provided with a second limiting protrusion, and the inner wall of the shaft shell is provided with a second limiting clamping groove.

2. The anti-backlash unbalanced shaft assembly of claim 1, wherein, The blocking ring is in threaded connection with the shaft part.

3. The anti-backlash unbalanced shaft assembly of claim 2, wherein, The shaft shell comprises a first shaft shell and a second shaft shell, which are oppositely arranged and detachably connected.

4. The anti-backlash unbalanced shaft assembly of claim 1, wherein, The first shaft shell and the second shaft shell are detachably connected through a threaded connecting piece, and the first cover and the shaft shell are detachably connected through a threaded connecting piece.

5. The anti-backlash unbalanced shaft assembly of claim 4, wherein, A gasket is arranged between the shaft shell and the balance shaft support to block the gap between the shaft shell and the balance shaft support.

6. The anti-backlash unbalanced shaft assembly of claim 1, wherein, A second cover is arranged at the port of the bushing close to the first cover.

7. The anti-backlash counterbalance shaft assembly of any of claims 1 to 6, wherein, ​ 8. The anti-backlash unbalanced shaft assembly of claim 7, wherein, ​ 9. The anti-backlash counterbalance shaft assembly of any one of claims 1 to 6, wherein, ​ 10. The anti-backlash counterbalance shaft assembly of any one of claims 1 to 6, wherein, ​

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