A support mechanism for press-fitting an inverter housing and a bushing of a new energy vehicle

Abstract

The present invention relates to the technical field of automotive component press-fitting, and discloses a support mechanism for press-fitting an inverter housing and a bushing of a new energy vehicle, comprising: a mounting base, on which a guiding groove is provided, and the guiding groove includes a connected straight groove and an arc groove; a driving assembly, including a lever, a connecting rod and a telescopic rod, one end of the lever is provided with a first connecting shaft, the telescopic rod is provided with a second connecting shaft, and both ends of the connecting rod are respectively hinged to the first connecting shaft and the second connecting shaft; both the first connecting shaft and the second connecting shaft can be inserted into the guiding groove; a support member, arranged at one end of the lever far from the first connecting shaft; when both the first connecting shaft and the second connecting shaft are inserted into the straight groove, the lever translates along the length direction of the straight groove, and the support member can extend into the housing; when the first connecting shaft and / or the second connecting shaft is inserted into the arc groove, the lever rotates, and the support member can support on the housing. The support mechanism in this solution provides support for the housing, prevents the housing from deforming, and meets the internal space requirements of the housing.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive component press-fitting, and particularly relates to a support mechanism for press-fitting an inverter housing and a bushing of a new energy vehicle. Background Art

[0002] Press-fitting refers to the assembly process of pressing two parts with an interference fit into the mating position. When the housing is assembled and press-fitted, problems such as press-fitting deformation and insufficient press-fitting strength often occur. Especially during the process of press-fitting a bushing onto the housing of a new energy vehicle inverter, the housing of the automotive inverter serves as the installation carrier for internal components and provides protection; and the external electrical device is connected to the housing through a pluggable plug. The housing of the automotive inverter is usually made of aluminum alloy material, and the plug is prone to wear after frequent plugging and unplugging with the housing. Therefore, it is necessary to press-fit a bushing onto the housing to increase wear resistance and lubricity.

[0003] When the existing bushing is press-fitted with the housing of the automotive inverter, the housing is prone to deformation under pressure; or the housing is supported by a support mechanism. The existing support mechanism usually directly drives a support block to support on the housing by the piston rod of a cylinder. When the press-fitting force is large, a larger cylinder is required to provide sufficient support, which occupies a large space and has a high assembly cost; and for the support of the housing, the support block needs to extend into the cavity of the housing, and the existing support mechanism cannot meet this assembly requirement. Summary of the Invention

[0004] Aiming at the above deficiencies existing in the prior art, the technical problem to be solved by the present invention is to propose a support mechanism for press-fitting an inverter housing and a bushing of a new energy vehicle with a large support force and self-locking function.

[0005] The technical solution adopted by the present invention to solve its technical problems is to propose a support mechanism for press-fitting an inverter housing and a bushing of a new energy vehicle, including:

[0006] A mounting seat, on which a guiding groove is provided, and the guiding groove includes a connected straight groove and an arc groove;

[0007] A driving assembly, including a lever, a connecting rod, and a telescopic rod. One end of the lever is provided with a first connecting shaft, the telescopic rod is provided with a second connecting shaft, and both ends of the connecting rod are respectively hinged to the first connecting shaft and the second connecting shaft; and both the first connecting shaft and the second connecting shaft are movably inserted into the guiding groove.

[0008] A support member, arranged at one end of the lever far from the first connecting shaft;

[0009] When the first connecting shaft and the second connecting shaft are both inserted into the straight groove, the lever translates along the length direction of the straight groove, and the support member can extend into the housing; when the first connecting shaft and / or the second connecting shaft is inserted into the arc groove, the lever rotates, and the support member can support on the housing.

[0010] Further, a slide rail is provided on the mounting seat, the driving assembly further includes a slide block, the slide block is slidably arranged on the slide rail, and the lever is arranged on the slide block; and the slide rail is arranged in parallel with the straight groove.

[0011] Further, the lever includes a first end portion, a middle portion and a second end portion arranged in sequence, both the first end portion and the second end portion are located above the middle portion, the support member and the first connecting shaft are respectively arranged on the first end portion and the second end portion;

[0012] When the first connecting shaft and the second connecting shaft are both inserted into the straight groove, the first connecting shaft and the second connecting shaft are at the same height; when the first connecting shaft is inserted into the arc groove, the first connecting shaft is located above the second connecting shaft.

[0013] Further, a hinge shaft is provided on the middle portion, a hinge seat is provided on the slide block, and the hinge seat is hinged on the hinge shaft.

[0014] Further, when the first connecting shaft is inserted into the arc groove, the hinge shaft is located at the center of the arc groove, and the lever rotates around the hinge shaft.

[0015] Further, when the first connecting shaft and the second connecting shaft are both in the arc groove, the included angle between the connecting rod and the telescopic rod is greater than 90 degrees.

[0016] Further, rollers are provided at both ends of the first connecting shaft and both ends of the second connecting shaft, and the rollers roll along the groove surface of the guide groove.

[0017] Further, a first fixed shaft is provided on the first end portion, and the support member is hinged on the first fixed shaft.

[0018] Further, the driving assembly further includes an elastic member, the hinge shaft is arranged at one end of the middle portion close to the first end portion, a second fixed shaft is provided at one end of the middle portion close to the second end portion, a third fixed shaft is provided on the hinge seat, and both ends of the elastic member are respectively connected to the second fixed shaft and the third fixed shaft.

[0019] Further, the driving assembly further includes a driving machine, which is arranged on the mounting base, and the telescopic rod is the piston rod of the driving machine.

[0020] Compared with the prior art, the present invention has at least the following beneficial effects:

[0021] (1) In the present invention, the support mechanism is provided with a guide groove on the mounting base. The first connecting shaft and the second connecting shaft respectively connected to the lever and the telescopic rod can move in the guide groove. Through the guidance of the guide groove, the support member arranged on the lever can extend into the housing and support on the housing, providing support for the press-fitting of the bushing and the housing, preventing the housing from deforming, and meeting the internal space requirements of the housing during the press-fitting process;

[0022] (2) In the present invention, the guide groove is composed of a straight groove and an arc groove. When the first connecting shaft slides from the straight groove into the arc groove, the lever changes from a translation state to a rotation state, thereby realizing the extension, retraction and lifting of the support member arranged on the lever. The overall structure is simple and only needs to be driven by the telescopic rod;

[0023] (3) In the present invention, when the first connecting shaft enters the arc groove, there are included angles between the connecting rod and the lever and the telescopic rod respectively. When the support member supports on the housing for press-fitting operations, a "self-locking" structure is formed among the lever, the connecting rod and the telescopic rod. The driving machine used to drive the telescopic rod only needs to provide a small amount of power to enable the support member arranged on the lever to bear a large pressure. The driving machine occupies a small space, meets the requirements of the assembly site, and reduces the assembly cost;

[0024] (4) In the present invention, the support member is hinged on the lever, enabling the support member to meet the support requirements of housings with different surface inclinations, and improving the versatility of the support mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram (release state) of the support mechanism of the present invention;

[0026] Figure 2 is Figure 1 the front view of

[0027] Figure 3 is Figure 1 a schematic structural diagram of another state (pressing state) of

[0028] Figure 4 is Figure 3 the front view of

[0029] Figure 5 is Figure 3 the exploded view of

[0030] Figure 6Explosion diagram of the driving component and the support member;

[0031] Figure 7 Structural schematic diagram of the bushing and the housing (before press-fitting);

[0032] Figure 8 Structural schematic diagram of the support mechanism of the present invention when applied to the press-fitting of the bushing and the housing;

[0033] Figure 9 is Figure 8 Partial structural schematic diagram of.

[0034] In the figure:

[0035] 100, mounting base; 110, guide groove; 111, straight groove; 112, arc groove; 120, slide rail; 130, mounting plate; 210, lever; 211, first end; 212, middle part; 213, second end; 214, hinge shaft; 215, first fixed shaft; 216, second fixed shaft; 220, connecting rod; 230, telescopic rod; 240, first connecting shaft; 241, roller; 250, second connecting shaft; 260, sliding seat; 261, hinge seat; 262, third fixed shaft; 270, elastic member; 280, driving machine; 300, support member; 400, housing; 410, cavity; 420, mounting hole; 500, bushing. Detailed implementation manners

[0036] The following are specific embodiments of the present invention and in combination with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0037] As Figures 1-6 shown, a support mechanism for press-fitting an inverter housing and a bushing of a new energy vehicle includes a mounting base 100, a driving component and a support member 300. This support mechanism is applied to the press-fitting process of the bushing 500 and the housing 400 as shown in Figure 7 shown. The housing 400 has a cavity 410 and a mounting hole 420 communicating with the cavity 410. The bushing 500 is installed in the mounting hole 420. The bushing 500 is a bronze-inlaid steel sleeve and is in interference fit with the housing 400.

[0038] Among them, the mounting base 100 serves as the support carrier of the overall support mechanism. A guiding groove 110 is provided on the mounting base 100. The guiding groove 110 includes a connected straight groove 111 and an arc groove 112. The driving assembly includes a lever 210, a connecting rod 220, and a telescopic rod 230. A first connecting shaft 240 is provided at one end of the lever 210. A second connecting shaft 250 is provided on the telescopic rod 230. The two ends of the connecting rod 220 are respectively hinged to the first connecting shaft 240 and the second connecting shaft 250. Both the first connecting shaft 240 and the second connecting shaft 250 are movably inserted into the guiding groove 110. The support member 300 is arranged at the end of the lever 210 far from the first connecting shaft 240. When both the first connecting shaft 240 and the second connecting shaft 250 are inserted into the straight groove 111, the lever 210 translates along the length direction of the straight groove 111, and the support member 300 can extend into the housing 400. When the first connecting shaft 240 and / or the second connecting shaft 250 is inserted into the arc groove 112, the lever 210 rotates, and the support member 300 can support on the housing 400.

[0039] Specifically, by arranging this support mechanism, when the bushing 500 is press-fitted with the housing 400, the driving assembly in the support mechanism can drive the support member 300 to translate and lift, so that the support member 300 enters the housing 400 and supports on the housing 400, ensuring that the housing 400 does not deform when the bushing 500 is pressed into the housing 400, and enabling the housing 400 to withstand a large pressure. At the same time, when the support member 300 supports on the housing 400, the first connecting shaft 240 arranged at the other end of the lever 210 is "self-locked" in the arc groove 112 under the action of the connecting rod 220 and the second connecting shaft 250, so that the telescopic rod 230 only needs a small thrust to enable the support member 300 to withstand a large pressure.

[0040] In this embodiment, a slide rail 120 is provided on the mounting base 100. The driving assembly further includes a slide seat 260. The slide seat 260 is slidably arranged on the slide rail 120. The lever 210 is arranged on the slide seat 260. The slide rail 120 is arranged parallel to the straight groove 111. During actual installation, the slide rail 120 is installed upside down on the mounting base 100. The lever 210 is suspended on the slide rail 120 through the slide seat 260. The slide rail 120 parallel to the straight groove 111 ensures that the lever 210 can translate along the length direction of the straight groove 111. And when the lever 210 rotates to press down the support member 300 to support on the housing 400, the slide rail 120 serves as the support carrier of the lever 210, and the upside-down slide rail 120 ensures that it can withstand a large pressure.

[0041] Such as Figures 4-6As shown, the lever 210 includes a first end 211, a middle part 212, and a second end 213 arranged in sequence. Both the first end 211 and the second end 213 are located above the middle part 212, that is, both the first end 211 and the second end 213 bulge upward. The support 300 and the first connecting shaft 240 are respectively arranged on the first end 211 and the second end 213. When both the first connecting shaft 240 and the second connecting shaft 250 are inserted into the straight groove 111, the first connecting shaft 240 and the second connecting shaft 250 are at the same height. When the first connecting shaft 240 is inserted into the arc groove 112, the first connecting shaft 240 is located above the second connecting shaft 250. Specifically, when the first connecting shaft 240 and the second connecting shaft 250 move along the straight groove 111, the lever 210 drives the support 300 to translate. Until the first connecting shaft 240 moves along the arc groove 112, the lever 210 rotates and drives the support 300 to move downward and support on the housing 400. At this time, one end of the connecting rod 220 and the second connecting shaft 250 both move to below the first connecting shaft 240. Furthermore, when an upward pressure is applied to the support 300, the first connecting shaft 240 on the other end of the lever 210 presses downward on the connecting rod 220 and the second connecting shaft 250. Since the second connecting shaft 250 abuts against the inside of the straight groove 111, the mounting base 100 bears the main pressure, and a thrust is provided by the telescopic rod 230 on one side of the second connecting rod 220, thereby ensuring that the support 300 can bear a large pressure.

[0042] Preferably, a hinge shaft 214 is provided on the middle part 212, and a hinge seat 261 is provided on the sliding seat 260. The hinge seat 261 is hinged on the hinge shaft 214. That is, the sliding seat 260 is connected to the lever 210 through the hinge seat 261, and the lever 210 hinged on the hinge seat 261 ensures that the lever 210 can rotate. When the first connecting shaft 240 is inserted into the arc groove 112, the hinge shaft 214 is located at the center of the arc groove 112, and the lever 210 rotates around the hinge shaft 214. That is, after the first connecting shaft 240 on the lever 210 enters the arc groove 112, the first connecting shaft 240 moves upward along the arc groove 112 and makes a circular motion, so that the support 300 on the other end of the lever 210 moves downward.

[0043] During actual use, when both the first connecting shaft 240 and the second connecting shaft 250 are in the arc groove 112, the included angle between the connecting rod 220 and the telescopic rod 230 is greater than 90 degrees, so that the first connecting shaft 240 only makes a circular motion in the arc groove 112. It should be noted that the second connecting shaft 250 only makes a translational motion driven by the telescopic rod 230. The second connecting shaft 250 can be translated into the arc groove 112 until it abuts against the groove wall of the arc groove 112, and the second connecting shaft 250 reaches the maximum movement distance.

[0044] Further preferably, rollers 241 are provided at both ends of the first connecting shaft 240 and both ends of the second connecting shaft 250, and the rollers 241 roll along the groove surface of the guiding groove 110; by providing the rollers 241, the movement of the first connecting shaft 240 and the second connecting shaft 250 is made smooth.

[0045] Further preferably, a first fixed shaft 215 is provided on the first end portion 211, and the support member 300 is hinged on the first fixed shaft 215, that is, the support member 300 is movably provided on the lever 210 to ensure that the support member 300 can support on the inner surface of the housing 400 regardless of the rotation angle of the lever 210.

[0046] As Figure 2 and Figure 6 shown, the drive assembly further includes an elastic member 270. The hinge shaft 214 is provided at one end of the middle portion 212 close to the first end portion 211. A second fixed shaft 216 is provided at one end of the middle portion 212 close to the second end portion 213. A third fixed shaft 262 is provided on the hinge seat 261. Both ends of the elastic member 270 are respectively connected to the second fixed shaft 216 and the third fixed shaft 262. In actual use, the elastic member 270 is a tension spring. By providing the tension spring at one end of the lever 210, the first connecting shaft 240 always has an upward pulling force, improving the smoothness of the movement of the first connecting shaft 240 along the arc groove 112, and at the same time enabling the support member 300 to bear a greater pressure.

[0047] In this embodiment, the drive assembly further includes a driving machine 280. The driving machine 280 is provided on the mounting seat 100, and the telescopic rod 230 is the piston rod of the driving machine 280. In actual use, the driving machine 280 can be a cylinder, an oil cylinder, etc. When the support member 300 supports on the housing 400, the driving machine 280 only needs to provide a small thrust, and thus only a small driving machine 280 is required for driving, reducing the space occupied by the driving machine 280.

[0048] The actual working process is as follows: When performing the press-fitting operation of the bushing 500 and the housing 400, first, the telescopic rod 230 drives the second connecting shaft 250 to move, and under the cooperation of the first connecting shaft 240 and the second connecting shaft 250 with the guiding groove 110, the connecting rod 220 and the lever 210 are further pushed to move. When both the first connecting shaft 240 and the second connecting shaft 250 are inserted into the straight groove 111, the lever 210 only makes a translational movement, and at this time, the support member 300 can extend into the cavity 410 of the housing 400; the telescopic rod 230 continues to extend, so that the first connecting shaft 240 and the second connecting shaft 250 slide into the arc groove 112. At this time, the lever 210 rotates around the hinge shaft 214, and further the support member 300 provided on the lever 210 moves downward to abut against the housing 400 (as Figure 8 and Figure 9 shown) to support the housing 400.

[0049] In this solution, the overall volume of the support mechanism is relatively small, occupying little space during use. At the same time, it provides sufficient support force for the press-fitting of the bushing 500 and the housing 400, ensuring that the housing 400 does not deform.

[0050] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the attached drawings). If this specific posture changes, the directional indications will also change accordingly.

[0051] In addition, in the present invention, descriptions such as "first", "second", and "one" are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0052] In the present invention, unless otherwise clearly specified and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A supporting mechanism for press-fitting an inverter housing and a bushing of a new energy vehicle, characterized in that, it includes: a mounting seat, on which a guiding groove is provided, and the guiding groove includes a connected straight groove and an arc groove; a driving assembly, including a lever, a connecting rod and a telescopic rod, one end of the lever is provided with a first connecting shaft, the telescopic rod is provided with a second connecting shaft, and both ends of the connecting rod are respectively hinged on the first connecting shaft and the second connecting shaft; and both the first connecting shaft and the second connecting shaft are movably inserted into the guiding groove; a supporting member, arranged at one end of the lever far from the first connecting shaft; when both the first connecting shaft and the second connecting shaft are inserted into the straight groove, the lever translates along the length direction of the straight groove, and the supporting member can extend into the housing; when the first connecting shaft and / or the second connecting shaft is inserted into the arc groove, the lever rotates, and the supporting member can support on the housing.

2. The supporting mechanism for press-fitting an inverter housing and a bushing of a new energy vehicle according to claim 1, characterized in that, a slide rail is provided on the mounting seat, the driving assembly further includes a slide seat, the slide seat is slidably arranged on the slide rail, and the lever is arranged on the slide seat; and the slide rail is arranged parallel to the straight groove.

3. The supporting mechanism for press-fitting an inverter housing and a bushing of a new energy vehicle according to claim 2, characterized in that, the lever includes a first end portion, a middle portion and a second end portion arranged in sequence, both the first end portion and the second end portion are located above the middle portion, the supporting member and the first connecting shaft are respectively arranged on the first end portion and the second end portion; when both the first connecting shaft and the second connecting shaft are inserted into the straight groove, the first connecting shaft and the second connecting shaft are at the same height; when the first connecting shaft is inserted into the arc groove, the first connecting shaft is located above the second connecting shaft.

4. The supporting mechanism for press-fitting an inverter housing and a bushing of a new energy vehicle according to claim 3, characterized in that, a hinge shaft is provided on the middle portion, a hinge seat is provided on the slide seat, and the hinge seat is hinged on the hinge shaft.

5. The supporting mechanism for press-fitting an inverter housing and a bushing of a new energy vehicle according to claim 4, characterized in that, when the first connecting shaft is inserted into the arc groove, the hinge shaft is located at the center of the arc groove, and the lever rotates around the hinge shaft.

6. The supporting mechanism for press-fitting an inverter housing and a bushing of a new energy vehicle according to claim 1, characterized in that, when both the first connecting shaft and the second connecting shaft are in the arc groove, the included angle between the connecting rod and the telescopic rod is greater than 90 degrees.

7. The supporting mechanism for press-fitting an inverter housing and a bushing of a new energy vehicle according to claim 1, characterized in that, rollers are provided at both ends of the first connecting shaft and both ends of the second connecting shaft, and the rollers roll along the groove surface of the guiding groove.

8. A support mechanism for press-fitting an inverter housing and a bushing of a new energy vehicle according to claim 3, characterized in that, a first fixed shaft is provided on the first end portion, and the support member is hinged on the first fixed shaft.

9. A support mechanism for press-fitting an inverter housing and a bushing of a new energy vehicle according to claim 4, characterized in that, the driving assembly further includes an elastic member, the hinge shaft is provided at one end of the middle portion close to the first end portion, a second fixed shaft is provided at one end of the middle portion close to the second end portion, a third fixed shaft is provided on the hinge seat, and both ends of the elastic member are respectively connected to the second fixed shaft and the third fixed shaft.

10. A support mechanism for press-fitting an inverter housing and a bushing of a new energy vehicle according to claim 1, characterized in that, the driving assembly further includes a driving machine, the driving machine is provided on the mounting seat, and the telescopic rod is a piston rod of the driving machine.

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