Base bush assembly tool of automobile automatic gear shifter

Abstract

The utility model discloses a base bush assembly tool of an automobile automatic gear shifter. The positions of first guide columns correspond to the positions of first through holes in four supporting legs of a base. A lining preassembling hole is formed in the left side of the upper portion of the lining guide block, and a piston rod of the first air cylinder is connected with the lining guide block so that the lining can be conveyed to the position over the first through hole of the base supporting leg under pushing of the first air cylinder. Two supporting plates of the press-fitting mechanism are vertically arranged on the two sides of the bottom plate. The top plate is arranged at the tops of the two supporting plates; the middle plate is arranged between the top plate and the bottom plate and between the two supporting plates; the two second air cylinders are fixedly arranged on the top plate, and piston rods of the second air cylinders are vertically arranged and penetrate out of the top plate to be connected with the middle plate. Four guide sleeves are fixedly arranged at the positions, corresponding to the four first guide columns, of the lower surface of the middle plate. The four second guide columns can be driven by the second air cylinder to move downwards so that the linings can be pressed into the first through holes in the supporting legs from the lining guide blocks.

Description

Technical Field

[0001] This utility model relates to the field of automotive gear shifter assembly technology, and in particular to a base bushing assembly tooling for an automotive automatic gear shifter. Background Technology

[0002] As a key component for power transmission switching, the automatic gear shifter's core function is to distribute engine power to each gear in the transmission as needed through precise mechanical linkage, thereby enabling smooth vehicle starting, shifting, and parking. This device typically consists of a shift control mechanism, sensor components, a transmission gear set, and a base. The base, as the fundamental support component, not only bears the mechanical load of fixing the internal components but also rigidly connects to the vehicle body mounting bracket via a bottom connecting structure. The four support feet of the base are crucial interfaces for its connection to the vehicle body. Uneven stiffness distribution or insufficient positioning accuracy of the base support structure will directly lead to abnormal wear of the shift mechanism components, sensor signal deviation, or even shifting jamming. Therefore, the installation quality of the bushings inside the base support feet is one of the core factors affecting the performance of the automatic gear shifter.

[0003] Currently, most automakers use manual press-fitting, which involves fixing the base with a simple positioning fixture and then having operators use handheld press-fitting tools to press the bushings into the mounting holes of the support feet one by one. The positioning accuracy during bushing installation depends on the operator's experience, which may result in tilting or inconsistent depth, leading to frequent after-sales problems such as shifting vibration and abnormal noise, which seriously affects the brand reputation of automakers. Moreover, this installation method has insufficient assembly accuracy, low efficiency, and unstable quality, resulting in high overall costs. There is an urgent need to develop a dedicated assembly tooling for bushings that can achieve high-precision positioning and high press-fitting consistency.

[0004] The above background information is provided only to aid in understanding the concept and technical solution of this utility model. It does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above information was disclosed on the filing date of this patent application, the above background information should not be used to evaluate the novelty and inventiveness of this application. Utility Model Content

[0005] The purpose of this utility model is to propose a tooling for assembling the base bushing of an automatic gear shifter in automobiles, so as to solve the technical problems of insufficient precision, low efficiency and unstable quality in the assembly of the gear shifter base bushing in the prior art.

[0006] Therefore, this utility model proposes a mounting tooling for a base bushing of an automatic gear shifter for automobiles.

[0007] Preferably, the present invention may also have the following technical features:

[0008] A mounting fixture for a base bushing of an automatic gear shifter for automobiles includes a base plate disposed on a workbench, and a base positioning mechanism, a guiding mechanism, and a pressing mechanism disposed on the base plate, wherein...

[0009] The base positioning mechanism includes four first guide pillars, the positions of which correspond to the positions of the first through holes in the four support legs of the base.

[0010] The guiding mechanism includes four sub-guiding mechanisms, which are located on the outside of the first guide post. Each sub-guiding mechanism includes a bushing guide block and a first cylinder. The bushing guide block has a bushing pre-installation hole on the upper left side. The piston rod of the first cylinder is connected to the bushing guide block so that, under the push of the first cylinder, the bushing that has been manually pre-installed in the bushing pre-installation hole can be sent to the top of the first through hole of the base support foot.

[0011] The pressing mechanism includes two second cylinders, four second guide pillars, an intermediate plate, two support plates, and a top plate. The two support plates are vertically arranged on both sides of the bottom plate; the top plate is located on top of the two support plates; the intermediate plate is located between the top plate and the bottom plate, and between the two support plates; the two second cylinders are fixedly arranged on the top plate, with the piston rods of the second cylinders vertically arranged and extending through the top plate to connect with the intermediate plate; four guide sleeves are fixedly arranged on the lower surface of the intermediate plate corresponding to the positions of the four first guide pillars; the four second guide pillars are connected to the four guide sleeves through pressure sensors, so that the downward movement of the second cylinders can drive the second guide pillars to move downward, thereby pressing the bushings from the bushing guide block into the first through hole in the support foot.

[0012] Preferably, the first guide post is a stepped guide post with a shoulder, and the uppermost cylinder of the first guide post can be inserted into the first through hole of the base to provide precise positioning for the base.

[0013] Preferably, the guide mechanism further includes a locking block and a proximity sensor, which are disposed near the bushing pre-installation hole and both protrude from the hole wall of the bushing pre-installation hole.

[0014] Preferably, the guide mechanism further includes a first mounting block and a second mounting block. The first mounting block is disposed on the base plate. The second mounting block is in the shape of a "┐" and has a groove extending through its left and right sides on its upper part, and its lower part is connected to the first mounting block. The bushing guide block is in the shape of a "┐" and its upper part is disposed on the upper end surface of the second mounting block, and its lower part matches the groove. The first cylinder is fixedly disposed on the right end face of the second mounting block, and the piston rod of the first cylinder is connected to the lower part of the bushing guide block, so that the lower part of the bushing guide block can slide in the groove under the drive of the first cylinder.

[0015] Preferably, the first mounting block is in the shape of a "」" and has a first waist-shaped hole at its lower part, and the second mounting block has a second waist-shaped hole at its lower part.

[0016] Preferably, the groove on the upper part of the second mounting block is a "convex" groove with an open upper end; the lower part of the bushing guide block is provided with a partial notch so that its lower part is a "convex" block that matches the "convex" groove.

[0017] Preferably, a blocking block is provided on the base plate between two of the sub-guide mechanisms, and a protrusion on the base is provided on the opposite side of the blocking block.

[0018] Preferably, the pressing mechanism further includes several linear guide rails, which are vertically arranged inside the support plate. The sliders on the linear guide rails are connected to the intermediate plate, and the sliders can drive the intermediate plate to move up and down on the linear guide rails.

[0019] Preferably, the pressing mechanism further includes several pneumatic dampers, which are disposed on the side of the intermediate plate away from the piston rod of the second cylinder. Corresponding to the position of the pneumatic dampers, several buffer rods are disposed on the base plate.

[0020] The beneficial effects of this utility model compared with the prior art include:

[0021] The tooling of this utility model provides precise positioning for the base of the automatic shifter by setting a first guide post on the base plate. The bushing guide block of the guiding mechanism cooperates with the first cylinder, and under the push of the first cylinder, it can push the pre-installed bushing above the base. The pressing mechanism moves the second cylinder downward through the piston rod, which drives the intermediate plate to press down, thereby driving the second guide post to press the bushing into the first through hole of the base. This application adopts the form of uniformly pressing the second guide post by the intermediate plate. The intermediate plate is a whole plate that can be formed in one process, which can ensure the flatness and perpendicularity of the intermediate plate, thereby ensuring that the four second guide posts are subjected to uniform force, making the bushing pressed down with consistent stroke, and making the positional accuracy of the press-fit bushing higher. A pressure sensor is set between the intermediate plate and the second guide post, which can monitor the actual force of each second guide post in real time. A safe pressure threshold can be set for the pressure sensor. When a second guide post encounters abnormal resistance (such as bushing jamming or part misalignment) causing a sudden pressure change, the system can immediately trigger a stop or alarm to avoid damage to the guide post, bushing or base caused by hard pressing. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the base of a specific embodiment of this utility model.

[0023] Figure 2This is a first schematic diagram of a specific embodiment of the present utility model.

[0024] Figure 3 This is a second schematic diagram of a specific embodiment of the present invention.

[0025] Figure 4 This is a specific embodiment of the present utility model. Figure 3 Enlarged diagram of point A in the middle.

[0026] Figure 5 This is a specific embodiment of the present utility model. Figure 3 Enlarged diagram of point B in the middle.

[0027] Figure 6 This is a specific embodiment of the present utility model. Figure 3 Enlarged diagram of point C in the middle.

[0028] Explanation of reference numerals in the attached drawings: 01-Base; 011-Support foot; 012-First through hole; 013-Protrusion; 02-Bushing; 021-Slit; 03-Worktable; 04-Base plate; 051-First guide post; 06-Separate guiding mechanism; 061-Bushing guide block; 0611-Bushing pre-installation hole; 062-First cylinder; 063-Clamping block; 064-Proximity sensor; 065-First mounting block; 0651-First oblong hole; 06 6-Second mounting block; 0661-Groove; 0662-Second oblong hole; 071-Second cylinder; 072-Second guide post; 073-Intermediate plate; 074-Support plate; 075-Top plate; 076-Guide sleeve; 077-Pressure sensor; 078-Linear guide rail; 079-Slider; 0710-Third mounting block; 0711-Pneumatic damper; 0712-Buffer rod; 08-Blocking block; 09-Pad plate; 10-Handle. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to specific embodiments and the accompanying drawings. It should be emphasized that the following description is merely exemplary and is not intended to limit the scope and application of the present invention.

[0030] Non-limiting and non-exclusive embodiments will be described with reference to the following figures, wherein the same reference numerals denote the same parts unless otherwise specifically stated.

[0031] A tooling assembly for a base bushing of an automatic gear shifter in automobiles, such as Figures 1-6 As shown, it is used to assemble the bushing 02 on the base 01 in the automatic gear shifter of an automobile, such as Figure 1As shown, four support feet 011 are provided below the base 01, and the support feet 011 are provided with first through holes 012 for assembling bushings 02. A protrusion 013 is provided on the left side of the base body. The bushing 02 involved in this application is a straight column type open bushing. The aforementioned tooling specifically includes: a base plate 04 mounted on the workbench 03, and a base positioning mechanism, a guiding mechanism, and a pressing mechanism mounted on the base plate 04. The base positioning mechanism includes four first guide pillars 051, the positions of which correspond to the positions of the first through holes 012 within the four support legs 011 of the base 01. The guiding mechanism includes four sub-guiding mechanisms 06, each located outside the first guide pillars 051, including a bushing guide block 061 and a first cylinder 062. The bushing guide block 061 has a bushing pre-installation hole 0611 on its upper left side. The piston rod of the first cylinder 062 is connected to the bushing guide block 061, so that, under the push of the first cylinder 062, the bushing 02 pre-installed manually in the bushing pre-installation hole 0611 can be delivered directly above the first through hole 012 of the support leg 011 of the base 01. The pressing mechanism includes two second cylinders 071 and four... The system comprises a second guide post 072, an intermediate plate 073, two support plates 074, and a top plate 075. The two support plates 074 are vertically arranged on both sides of the bottom plate 04. The top plate 075 is located on top of the two support plates 074. The intermediate plate 073 is located between the top plate 075 and the bottom plate 04, and between the two support plates 074. Two second cylinders 071 are fixedly arranged on the top plate 075, with the piston rods of the second cylinders 071 vertically arranged and extending outwards. The top plate 075 is connected to the intermediate plate 073; four guide sleeves 076 are fixedly installed on the lower surface of the intermediate plate 073 corresponding to the positions of the four first guide posts 051; the four second guide posts 072 are connected to the four guide sleeves 076 through pressure sensors 077, so that the downward movement of the second cylinder 071 can drive the second guide posts 072 to move downward, so as to press the bushing 02 from the bushing guide block 061 into the first through hole 012 in the support foot 011.

[0032] The aforementioned tooling, by setting a first guide post 051 on the base plate 04, can provide precise positioning for the base 01 of the automatic shifter; the bushing guide block 061 of the guiding mechanism cooperates with the first cylinder 062, and under the push of the first cylinder 062, it can push the pre-installed bushing 02 above the base 01; the pressing mechanism moves the second cylinder 071 downward through the piston rod, thereby driving the intermediate plate 073 downward, and then driving the second guide post 072 to press the bushing 02 into the first through hole 012 of the base 01. This application adopts the form of the intermediate plate 073 uniformly pressing the second guide post 072. The intermediate plate 073 is a whole plate, which can be formed in one process, ensuring The flatness and perpendicularity of the intermediate plate 073 ensure that the four second guide posts 072 are subjected to uniform force, so that the bushing 02 is pressed down with consistent stroke, resulting in higher positioning accuracy of the press-fit bushing 02. A pressure sensor 077 is installed between the intermediate plate 073 and the second guide posts 072 to monitor the actual force on each second guide post 072 in real time. By setting a safe pressure threshold for the pressure sensor 077, when a second guide post 072 encounters abnormal resistance (such as bushing 02 jamming or part misalignment) causing a sudden pressure change, the system can immediately trigger a stop or alarm to avoid damage to the second guide post 072, bushing 02 or base caused by hard pressing.

[0033] In some examples of this embodiment, such as Figure 1 and 3 As shown, the first guide post 051 is a stepped guide post with a shoulder. The uppermost cylinder of the first guide post 051 can be inserted into the first through hole 012 of the base 01 to provide precise positioning for the base 01. Fasteners are provided on the mounting shoulder at the bottom of the first guide post 051 to fix the first guide post 051 to the base plate 04. The height of the first guide post 051 is higher than the height of the base 01 so that the base 01 can be suspended on the base positioning mechanism, which facilitates the subsequent pressing of the bushing 02.

[0034] In some examples of this embodiment, such as Figure 3 and 4 As shown, the guide mechanism also includes a locking block 063 and a proximity sensor 064. The locking block 063 and the proximity sensor 064 are located near the bushing pre-installation hole 0611 and both protrude from the hole wall of the bushing pre-installation hole 0611. When pre-installing the bushing 02, the locking block 063 can be engaged with the cut 021 of the bushing 02 to allow the operator to identify the direction of the pre-installed bushing 02, facilitating quick and accurate pre-installation of the bushing 02. The proximity sensor 064 is used to sense whether a bushing 02 has been installed, preventing the operator from missing a bushing 02 during the assembly process.

[0035] In some examples of this embodiment, such as Figure 3 and 5As shown, the sub-guiding mechanism further includes a first mounting block 065 and a second mounting block 066. The first mounting block 065 is disposed on the base plate 04; the second mounting block 066 is in the shape of a "┐", and a groove 0661 penetrating its left and right sides is provided on the upper part of the second mounting block 066, and the lower part is connected to the first mounting block 065; the bushing guide block 061 is in the shape of a "┐", and its upper part is disposed on the upper end surface of the second mounting block 066, and the shape of its lower part matches the groove 0661; the first cylinder 062 is fixedly disposed on the right end face of the second mounting block 066, and the piston rod of the first cylinder 062 is connected to the lower part of the bushing guide block 061, so that under the drive of the first cylinder 062, the lower part of the bushing guide block 061 can slide in the groove 0661, and the sub-guiding mechanism with this structure pushes the bushing 02 more smoothly. Specifically, as Figure 3 and 6 As shown, the first mounting block 065 is shaped like a "」", with a first oblong hole 0651 at its lower part, and a second oblong hole 0662 at the lower part of the second mounting block 066, to facilitate fine-tuning during the installation of the guide mechanism, thereby making the overall positioning of the tooling more accurate. Specifically, as... Figure 5 As shown, the groove 0661 on the upper part of the second mounting block 066 is a "convex" groove with an open upper end; the lower part of the bushing guide block 061 is provided with a partial notch so that its lower part is a "convex" block that matches the "convex" groove. The bushing guide block 061 with this structure fits more accurately with the second mounting block 066, further improving the assembly accuracy of the tooling.

[0036] like Figure 1 , 3 As shown in Figure 4, the sub-guiding mechanisms 06 corresponding to the two left first guide posts 051 are located on the left side of the first guide posts 051, and the sub-guiding mechanisms 06 corresponding to the two right first guide posts 051 are located on the right side of the first guide posts 051. In some other examples, the sub-guiding mechanisms 06 can also be located on the front and rear sides, mainly to push the pre-installed bushing 02 directly above the first through hole 012 of the base 01. To prevent workers from installing the base 01 in the wrong direction, such as... Figure 1 and 3 As shown, a blocking block 08 can also be provided on the base plate 04, between two of the separate guide mechanisms 06, and a protrusion 013 on the base 01 is provided on the opposite side of the blocking block 08. For ease of installation and subsequent maintenance, such as... Figure 3 As shown, the base positioning mechanism and the guide mechanism can be installed on the pad 09, and the pad 09 can be placed on the base plate 04. Handles 10 are provided on both sides of the pad 09 to facilitate the movement of the base positioning mechanism and the guide mechanism during installation and maintenance.

[0037] In some examples of this embodiment, such as Figure 3 As shown, the pressing mechanism also includes several linear guide rails 078. In this example, two linear guide rails 078 are respectively set on the left and right support plates. The linear guide rails 078 are vertically set inside the support plate 074. The sliders 079 on the linear guide rails 078 are connected to the intermediate plate 073. Specifically, several third mounting blocks 0710 can be set on the intermediate plate 073 so that the sliders 079 are fixedly set on the third mounting blocks 0710. When the second cylinder 071 moves up and down, the sliders 079 can drive the intermediate plate 073 to move up and down on the linear guide rails 078, reducing the load on the second cylinder 071 and making the entire tooling move more smoothly, thus improving the assembly accuracy.

[0038] In some examples of this embodiment, such as Figure 3 As shown, the pressing mechanism also includes several pneumatic buffers 0711. The pneumatic buffers 0711 are located on the side of the intermediate plate 073 away from the piston rod of the second cylinder 071. Corresponding to the position of the pneumatic buffers 0711, several buffer rods 0712 are provided on the base plate 04. Specifically, the stroke of the pneumatic buffers 0711 is adjusted in advance. When the pneumatic buffers 0711 reach the preset pressing stroke and continue to press down, an alarm will be issued. The system can immediately trigger a stop or alarm to avoid excessive pressing that could damage the guide post, bushing, or base 01.

[0039] The working principle of the above tooling is as follows: The operator places the base on the base positioning mechanism, presses the switch, and starts the first cylinder 062, so that the bushing guide block 061 of the guide mechanism reaches above the first through hole 012 in the support foot 011 of the base 01 under the push of the first cylinder 062. The operator manually inserts the bushing 02, presses the switch again, and starts the second cylinder 071, so that the intermediate plate 073 moves down, thereby driving the second guide post 072 to move down, pushing the bushing 02 into the first through hole 012 of the base 01.

[0040] Those skilled in the art will recognize that numerous variations are possible with respect to the above description, and the embodiments and figures are merely for describing one or more specific implementations.

[0041] Although exemplary embodiments of the present invention have been described and illustrated, those skilled in the art will understand that various changes and substitutions can be made thereto without departing from the spirit of the present invention. Furthermore, many modifications can be made to adapt specific situations to the doctrine of the present invention without departing from the central concept of the present invention described herein. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but may include all embodiments and equivalents that fall within the scope of the present invention.

Claims

1. A mounting fixture for a base bushing of an automatic gear shifter for automobiles, characterized in that: This includes a base plate mounted on the workbench, and a base positioning mechanism, a guiding mechanism, and a pressing mechanism mounted on the base plate, wherein... The base positioning mechanism includes four first guide pillars, the positions of which correspond to the positions of the first through holes in the four support legs of the base. The guiding mechanism includes four sub-guiding mechanisms, which are located on the outside of the first guide post. Each sub-guiding mechanism includes a bushing guide block and a first cylinder. The bushing guide block has a bushing pre-installation hole on the upper left side. The piston rod of the first cylinder is connected to the bushing guide block so that, under the push of the first cylinder, the bushing that has been manually pre-installed in the bushing pre-installation hole can be sent to the top of the first through hole of the base support foot. The pressing mechanism includes two second cylinders, four second guide pillars, an intermediate plate, two support plates, and a top plate. The two support plates are vertically arranged on both sides of the bottom plate; the top plate is located on top of the two support plates; the intermediate plate is located between the top plate and the bottom plate, and between the two support plates; the two second cylinders are fixedly arranged on the top plate, with the piston rods of the second cylinders vertically arranged and extending through the top plate to connect with the intermediate plate; four guide sleeves are fixedly arranged on the lower surface of the intermediate plate corresponding to the positions of the four first guide pillars; the four second guide pillars are connected to the four guide sleeves through pressure sensors, so that the downward movement of the second cylinders can drive the second guide pillars to move downward, thereby pressing the bushings from the bushing guide block into the first through hole in the support foot.

2. The mounting fixture for the base bushing of an automatic gear shifter as described in claim 1, characterized in that: The first guide post is a stepped guide post with a shoulder. The uppermost cylinder of the first guide post can be inserted into the first through hole of the base to provide precise positioning for the base.

3. The mounting fixture for the base bushing of an automatic gear shifter as described in claim 1, characterized in that: The guide mechanism further includes a locking block and a proximity sensor, which are located near the bushing pre-installation hole and both protrude from the hole wall of the bushing pre-installation hole.

4. The mounting fixture for the base bushing of an automatic gear shifter as described in claim 1, characterized in that: The guide mechanism further includes a first mounting block and a second mounting block. The first mounting block is disposed on the base plate. The second mounting block is shaped like a "┐" and has a groove extending through its left and right sides on its upper part, and its lower part is connected to the first mounting block. The bushing guide block is shaped like a "┐" and its upper part is disposed on the upper surface of the second mounting block, and its lower part matches the groove. The first cylinder is fixedly disposed on the right end face of the second mounting block, and the piston rod of the first cylinder is connected to the lower part of the bushing guide block, so that the lower part of the bushing guide block can slide in the groove under the drive of the first cylinder.

5. The mounting fixture for the base bushing of an automatic gear shifter as described in claim 4, characterized in that: The first mounting block is shaped like a "」" and has a first waist-shaped hole at its lower part, while the second mounting block has a second waist-shaped hole at its lower part.

6. The mounting fixture for the base bushing of an automatic gear shifter as described in claim 4, characterized in that: The groove on the upper part of the second mounting block is a "convex" groove with an open upper end; the lower part of the bushing guide block is provided with a partial notch so that its lower part is a "convex" block that matches the "convex" groove.

7. The mounting fixture for the base bushing of an automatic gear shifter as described in claim 1, characterized in that: A blocking block is provided on the base plate between two of the sub-guide mechanisms, and a protrusion on the base is provided on the opposite side of the blocking block.

8. The mounting fixture for the base bushing of an automatic gear shifter as described in claim 1, characterized in that: The pressing mechanism also includes several linear guide rails, which are vertically arranged inside the support plate. The sliders on the linear guide rails are connected to the intermediate plate, and the sliders can drive the intermediate plate to move up and down on the linear guide rails.

9. The mounting fixture for the base bushing of an automatic gear shifter as described in claim 1, characterized in that: The pressing mechanism also includes several pneumatic dampers, which are disposed on the side of the intermediate plate away from the piston rod of the second cylinder. Corresponding to the position of the pneumatic dampers, several damping rods are disposed on the base plate.

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