A device for pressing bearings at both ends of an electronic throttle body

Abstract

The present invention relates to the technical field of throttle assembly processing, and discloses a bearing pressing device for both ends of an electronic throttle body, comprising a frame, a cylinder and a pressure head, wherein the pressure head is mounted on the telescopic end of the cylinder, a fan-shaped pressing frame is mounted on the frame, the cylinder is mounted on the top of the fan-shaped pressing frame, a bushing guide groove, a shell guide groove, a valve shaft guide groove and a bearing guide groove are provided on the fan-shaped pressing frame, a bushing clamp, a shell clamp, a valve shaft clamp seat and a bearing clamp seat are correspondingly mounted for sliding on the fan-shaped pressing frame, a movable arm is mounted for rotation on the back side of the fan-shaped pressing frame, and the bushing clamp, the valve shaft clamp seat and the bearing clamp seat are slidably engaged with the movable arm. This solution drives multiple clamps to move in coordination through a single power source of a reduction motor, synchronously adjusts the relative positions of the bushing, valve shaft, bearing and shell, ensures that all components meet the assembly conditions before the pressure head is pressed down, realizes full-process automated pressing, reduces labor costs, and improves the efficiency of bearing pressing without losing the effect.

Description

Technical Field

[0001] The invention relates to the technical field of throttle assembly processing, in particular to a device for pressing bearings at both ends of an electronic throttle body. Background Art

[0002] In related technologies, the bearings at both ends of the electronic throttle body are usually used for the rotation of the valve shaft. In some throttle bodies, there are bearings at both ends of the valve shaft. In some throttle bodies, there is a bearing at one end of the valve shaft and a bushing at the other end. The bushing is first installed into the housing, and then the valve shaft is installed into the housing, and the end of the valve shaft is plugged into the bushing. Then the cover plate at the end of the bushing is installed, and finally the bearing is pressed into the side of the housing, and the bearing and the end of the valve shaft are plugged into each other at the same time.

[0003] Since the pressing of bearings requires pre-assembly conditions, the existing electronic throttle bodies are manually installed before the bearings are pressed, and then the bearings and throttle bodies are placed on the cylinder machine tool and pressed together. This is time-consuming and labor-intensive, and the overall processing efficiency is poor. Therefore, it does not meet the existing needs. In this regard, we propose a device for pressing bearings at both ends of an electronic throttle body. Summary of the Invention

[0004] The present invention provides a bearing pressing device at both ends of an electronic throttle body. The bearing pressing device at both ends of an electronic throttle body can automatically assemble various components before the bearing is pressed, and automatically realize the bearing pressing, thereby improving processing efficiency. It solves the problem mentioned in the above background technology that the pressing of the bearing requires pre-assembly conditions, so the existing electronic throttle body is manually installed before the bearing is pressed, and then the bearing and the throttle body are placed on the cylinder machine tool and pressed together, which is time-consuming and labor-intensive, and the overall processing efficiency is poor.

[0005] In order to achieve the above-mentioned purpose, the present disclosure provides a device for pressing bearings at both ends of an electronic throttle body, comprising a frame, a cylinder and a pressure head, wherein the pressure head is mounted on the telescopic end of the cylinder, a fan-shaped press-fitting frame is mounted on the frame, the cylinder is mounted on the top of the fan-shaped press-fitting frame, a bushing guide groove, a shell guide groove, a valve shaft guide groove and a bearing guide groove are provided on the fan-shaped press-fitting frame, a bushing clamp, a shell clamp, a valve shaft clamp seat and a bearing clamp seat are correspondingly slidably mounted on the fan-shaped press-fitting frame, a movable arm is rotatably mounted on the back side of the fan-shaped press-fitting frame, and the bushing clamp, the valve shaft clamp seat and the bearing clamp seat are slidably engaged with the movable arm;

[0006] When the housing fixture is located directly below the pressure head, the bushing is completely installed with the housing, and the bearing is initially plugged into the valve shaft.

[0007] Optionally, a bushing slider, a housing slider, a valve shaft slider and a bearing slider are slidably installed on the movable arm, and sliding columns are slidably installed in the bushing guide groove, the housing guide groove, the valve shaft guide groove and the bearing guide groove, respectively. The corresponding sliding columns are respectively connected to the bushing slider, the housing slider, the valve shaft slider and the bearing slider, the bushing slider is connected to the bushing clamp, the housing slider is connected to the housing clamp, the valve shaft slider and the bearing slider are respectively connected to the valve shaft clamp seat and the bearing clamp seat, a reset plate is fixedly installed on the side of the movable arm, and a reset spring is installed between the bearing slider and the reset plate.

[0008] Optionally, the bushing guide groove includes a bushing loading guide groove located at the initial end and a bushing docking guide groove located at the terminal end, a bushing movement guide groove is connected between the bushing loading guide groove and the bushing docking guide groove, the diameter of the bushing docking guide groove is larger than the diameter of the bushing loading guide groove, and when the bushing fixture is located in the bushing guide groove, the bushing and the shell are plugged in.

[0009] Optionally, the valve shaft guide groove includes a valve shaft feeding guide groove located at the initial end and a valve shaft docking guide groove located at the end section, and a valve shaft movement guide groove is connected between the valve shaft feeding guide groove and the valve shaft docking guide groove, and the diameter of the valve shaft docking guide groove is smaller than the diameter of the valve shaft feeding guide groove.

[0010] Optionally, a tensioning groove is provided on the valve shaft clamp seat, and a tensioning motor is installed on the side of the valve shaft clamp seat, and the tensioning motor is connected to a double-threaded screw rod, and the double-threaded screw rod is rotatably installed on the valve shaft clamp seat, and a limiting column is also fixedly installed on the valve shaft clamp seat, and a pair of valve shaft clamping arms are slidably installed in the fan-shaped pressing frame, and the pair of valve shaft clamping arms are slidably installed with the limiting column at the same time, and a pair of valve shaft clamping arms are respectively connected to the two threads of the double-threaded screw rod, and the end of the valve shaft clamping arm is integrally connected with a valve shaft clamping ring, and when the valve shaft clamp seat is located directly below the pressure head, the tensioning motor drives the two valve shaft clamping rings away from each other.

[0011] Optionally, the bearing guide groove includes a bearing loading guide groove located at the initial end, the bearing loading guide groove is connected to a bearing movement guide groove, the bearing movement guide groove is connected to a bearing docking guide groove, the end of the bearing docking guide groove is vertically connected to a bearing press-fitting guide groove, the bearing press-fitting guide groove corresponds to the position of the pressure head, the diameter of the bearing docking guide groove is smaller than the diameter of the bearing loading guide groove, and the diameter difference between the bearing loading guide groove and the bearing docking guide groove is greater than the diameter difference between the valve shaft loading guide groove and the valve shaft docking guide groove.

[0012] Optionally, a lifting slide is slidably mounted on the bearing clamp seat, two connecting rods are mounted on the side of the lifting slide, the ends of the connecting rods are connected to a bearing clamp ring, a cross groove is provided on the bearing clamp ring, a cross pressing end is provided at the bottom end of the pressure head, the cross pressing end is plugged into the cross groove, and the size of the cross pressing end is larger than the cross groove.

[0013] Optionally, a push airbag is installed on the inner side of the bearing clamp ring, and the push airbag is staggered with the cross groove. A positioning air cylinder is fixedly installed on the side of the bearing clamp seat, and a positioning pressure rod is inserted in the positioning air cylinder. The other end of the positioning pressure rod is connected to the lifting slide, and a lifting spring is installed between the lifting slide and the bearing clamp seat. The lifting spring is sleeved on the outside of the positioning pressure rod and the positioning air cylinder, and an air pipe is connected between the positioning air cylinder and the push airbag.

[0014] Optionally, the edges of the cross pressure end are chamfered, and the edges of the bearing clamping ring are also chamfered. When the cross pressure end is plugged into the bearing clamping ring, the distance between the two bearing clamping rings increases, and the clamped bearing slips.

[0015] Optionally, the stiffness of the lifting spring is greater than that of the return spring, and when the return spring is compressed, the bearing clamp slides in the bearing press-fitting guide groove; when the lifting spring is fully compressed, the bearing and the housing are pre-pressed.

[0016] Through the above-mentioned technical solution, the electronic throttle body bearing press-fitting device provided by the present disclosure, when in use: during the rotation of the movable arm, the bushing guide groove, the valve shaft guide groove, and the bearing guide groove respectively guide the bushing fixture, the valve shaft clamp seat, and the bearing clamp seat to cause displacement changes, thereby automatically changing the assembly relationship between the clamped bushing, housing, valve shaft, and bearing. This allows the positioning and assembly of each component to be completed before press-fitting, ensuring that the bearing can be accurately installed in the designated position of the electronic throttle body housing. When the housing fixture is directly below the pressure head, the bushing is fully installed with the housing and the bearing is initially plugged into the valve shaft. At this time, the cylinder drives the pressure head downward to directly press the bearing into place. The single power source of the reduction motor drives the coordinated movement of multiple fixtures, synchronously adjusting the relative positions of the bushing, valve shaft, bearing, and housing, ensuring that all components meet the assembly conditions before the pressure head is pressed downward, realizing fully automated press-fitting, reducing labor costs, and improving the efficiency of bearing press-fitting without sacrificing the effect.

[0017] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0019] Figure 1 It is a schematic diagram of the overall main three-dimensional structure of the present invention.

[0020] Figure 2 For the present invention Figure 1 A schematic diagram of the enlarged structure.

[0021] Figure 3 It is a schematic diagram of the pressure head structure of the present invention.

[0022] Figure 4 It is a structural schematic diagram of the bearing clamping ring of the present invention when it is expanded.

[0023] Figure 5 It is a schematic diagram of the overall back structure of the present invention.

[0024] Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged structure at point B.

[0025] Figure 7 It is a structural schematic diagram of the bearing clamp seat and the valve shaft clamp seat of the present invention.

[0026] Figure 8 It is a structural schematic diagram of the bearing and housing during pre-pressing assembly of the present invention.

[0027] Figure 9 It is a schematic diagram of the cross-sectional structure of the valve shaft clamp seat of the present invention.

[0028] Figure 10 It is a schematic diagram of the cross-sectional structure of the bearing clamping ring of the present invention.

[0029] Figure 11 It is a schematic structural diagram of the preparation of the present invention.

[0030] Figure 12 It is a structural schematic diagram of the bushings of the present invention when they are docked.

[0031] Figure 13 It is a structural schematic diagram of the bearing of the present invention when it is docked with the valve shaft.

[0032] Explanation of reference numerals: 110, fan-shaped press-fitting frame; 120, frame; 130, reduction motor; 140, moving arm; 150, cylinder; 160, pressure head; 171, bushing slider; 172, housing slider; 173, valve shaft slider; 174, bearing slider; 175, reset plate; 176, reset spring; 210, bushing fixture; 220, bushing guide groove; 221, bushing feeding guide groove; 222, bushing moving guide groove; 223, bushing docking guide groove; 310, housing fixture; 320, housing guide groove; 410, valve shaft clamp seat; 411, tensioning groove; 412, valve shaft clamping arm; 413, tensioning motor; 414, Double-threaded screw; 415, limit column; 416, valve shaft clamping ring; 420, valve shaft guide groove; 421, valve shaft feeding guide groove; 422, valve shaft movement guide groove; 423, valve shaft docking guide groove; 510, bearing clamp seat; 511, lifting slide; 512, connecting rod; 513, bearing clamp ring; 514, lifting spring; 515, positioning pressure rod; 516, positioning air cylinder; 517, air pipe; 520, bearing guide groove; 521, bearing feeding guide groove; 522, bearing movement guide groove; 523, bearing docking guide groove; 524, bearing press-fitting guide groove; 610, cross groove; 620, push airbag; 630, cross pressure end. DETAILED DESCRIPTION

[0033] To make the above-mentioned objects, features, and advantages of the present disclosure more clearly understood, specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present disclosure. However, the present disclosure can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without violating the scope of the present disclosure. Therefore, the present disclosure is not limited to the specific embodiments disclosed below.

[0034] In the description of the present disclosure, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present disclosure. The terms "first" and "second" are used to distinguish one element from another and do not have sequentiality or importance. In addition, when the following description refers to the drawings, the same figure marks in different drawings represent the same or similar elements, which are not repeated in this disclosure.

[0035] In this disclosure, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components, unless otherwise expressly limited. Those skilled in the art will understand the specific meanings of the above terms in this disclosure based on specific circumstances.

[0036] According to some embodiments of the present disclosure, a device for pressing bearings at both ends of an electronic throttle body is provided, referring to Figures 1-13 As shown in, the bearing pressing device at both ends of the electronic throttle body includes a frame 120, a cylinder 150 and a pressure head 160, the pressure head 160 is installed at the telescopic end of the cylinder 150, a fan-shaped pressing frame 110 is installed on the frame 120, and the cylinder 150 is installed on the top of the fan-shaped pressing frame 110, and a bushing guide groove 220, a shell guide groove 320, a valve shaft guide groove 420 and a bearing guide groove 520 are opened on the fan-shaped pressing frame 110, and a bushing clamp 210, a shell clamp 310, a valve shaft clamp seat 410 and a bearing clamp seat 510 are correspondingly slidably installed on the fan-shaped pressing frame 110, a reduction motor 130 is installed at the center of the frame 120, and a moving arm 140 is rotatably installed on the back side of the frame 120, and the output shaft of the reduction motor 130 is connected to the moving arm 140, and the bushing clamp 210, the valve shaft clamp seat 410 and the bearing clamp seat 510 are slidably engaged with the moving arm 140;

[0037] When the housing fixture 310 is located directly below the pressure head 160, the bushing is completely installed with the housing and the bearing is initially plugged into the valve shaft.

[0038] As the movable arm 140 rotates, the bushing guide groove 220, valve shaft guide groove 420, and bearing guide groove 520 respectively guide the bushing fixture 210, valve shaft holder 410, and bearing holder 510 to shift, automatically changing the assembly relationship between the bushing, housing, valve shaft, and bearing. This allows for the positioning and assembly of all components prior to press-fitting, ensuring the bearing is accurately installed in the designated position of the electronic throttle body housing. When the housing fixture is directly below the pressure head, the bushing is fully installed with the housing and the bearing is initially engaged with the valve shaft. At this point, the cylinder drives the pressure head downward, directly press-fitting the bearing into place.

[0039] In addition, a bushing slider 171, a housing slider 172, a valve shaft slider 173 and a bearing slider 174 are slidably installed on the movable arm 140, and sliding columns are slidably installed in the bushing guide groove 220, the housing guide groove 320, the valve shaft guide groove 420 and the bearing guide groove 520, respectively. The corresponding sliding columns are respectively connected to the bushing slider 171, the housing slider 172, the valve shaft slider 173 and the bearing slider 174, the bushing slider 171 is connected to the bushing clamp 210, the housing slider 172 is connected to the housing clamp 310, the valve shaft slider 173 and the bearing slider 174 are respectively connected to the valve shaft clamp seat 410 and the bearing clamp seat 510, a reset plate 175 is fixedly installed on the side of the movable arm 140, and a reset spring 176 is installed between the bearing slider 174 and the reset plate 175.

[0040] Furthermore, the bushing guide groove 220 includes a bushing loading guide groove 221 located at the initial end and a bushing docking guide groove 223 located at the terminal end. A bushing movement guide groove 222 is connected between the bushing loading guide groove 221 and the bushing docking guide groove 223. The diameter of the bushing docking guide groove 223 is larger than the diameter of the bushing loading guide groove 221. When the bushing fixture 210 is located in the bushing guide groove 220, the bushing and the shell are plugged in.

[0041] Specifically, the valve shaft guide groove 420 includes a valve shaft feeding guide groove 421 located at the initial end and a valve shaft docking guide groove 423 located at the end section. A valve shaft movement guide groove 422 is connected between the valve shaft feeding guide groove 421 and the valve shaft docking guide groove 423. The diameter of the valve shaft docking guide groove 423 is smaller than the diameter of the valve shaft feeding guide groove 421.

[0042] See Figure 11-13 The bearing guide groove 520 includes a bearing loading guide groove 521 located at the initial end, the bearing loading guide groove 521 is connected to the bearing movement guide groove 522, the bearing movement guide groove 522 is connected to the bearing docking guide groove 523, and the end of the bearing docking guide groove 523 is vertically connected to the bearing press-fitting guide groove 524, the bearing press-fitting guide groove 524 corresponds to the position of the pressure head 160, the diameter of the bearing docking guide groove 523 is smaller than the diameter of the bearing loading guide groove 521, and the diameter difference between the bearing loading guide groove 521 and the bearing docking guide groove 523 is greater than the diameter difference between the valve shaft loading guide groove 421 and the valve shaft docking guide groove 423.

[0043] Through the above technical solution, when the electronic throttle body bearing pressing device provided by the present disclosure is in use, the reduction motor 130 drives the movable arm 140 to rotate when in operation. Since the bushing fixture 210, the valve shaft clamp seat 410, and the bearing clamp seat 510 are all slidably mounted with the movable arm 140, the single power source of the reduction motor 130 drives the multiple fixtures to move in coordination, synchronously adjusting the relative positions of the bushing, valve shaft, bearing, and housing, ensuring that all components meet the assembly conditions before the pressing head 160 presses down, realizing fully automated pressing, reducing labor costs, and improving the bearing pressing efficiency without sacrificing the effect.

[0044] It should be noted that, through the deployment of the bushing feeding guide groove 221, the bushing moving guide groove 222, the bushing docking guide groove 223, the valve shaft feeding guide groove 421, the valve shaft moving guide groove 422, the valve shaft docking guide groove 423 and the bearing feeding guide groove 521, the bearing moving guide groove 522, the bearing docking guide groove 523 and the bearing pressing guide groove 524, the bushing and the housing are first assembled before the movable arm 140 rotates to the pressing position, and then the displacement of the valve shaft clamp 410 and the bearing clamp 510 is used to realize the synchronous movement of the valve shaft and the bearing, the valve shaft is partially plugged into the housing in advance, and because the diameter difference between the bearing feeding guide groove 521 and the bearing docking guide groove 523 is greater than the diameter difference between the valve shaft feeding guide groove 421 and the valve shaft docking guide groove 423, the bearing moving stroke in the same time period is greater than the valve shaft, ensuring that the bearing has synchronously completed pre-positioning when the valve shaft and the housing are partially plugged in, providing a precise alignment reference for subsequent pressing.

[0045] In some embodiments of the present disclosure, reference Figures 1-13 As shown in the figure, a tensioning groove 411 is provided on the valve shaft clamp seat 410, and a tensioning motor 413 is installed on the side of the valve shaft clamp seat 410. The tensioning motor 413 is connected to a double-threaded screw rod 414, and the double-threaded screw rod 414 is rotatably installed on the valve shaft clamp seat 410. A limiting column 415 is also fixedly installed on the valve shaft clamp seat 410, and a pair of valve shaft clamping arms 412 are slidably installed in the fan-shaped pressing frame 110. The pair of valve shaft clamping arms 412 are slidably installed with the limiting column 415 at the same time, and the pair of valve shaft clamping arms 412 are respectively connected to the two threads of the double-threaded screw rod 414, and the end of the valve shaft clamping arm 412 is integrally connected with a valve shaft clamping ring 416. When the valve shaft clamp seat 410 is located directly below the pressure head 160, the tensioning motor 413 drives the two valve shaft clamping rings 416 away from each other.

[0046] In this way, through the cooperation of the tensioning motor 413, the double-threaded screw rod 414 and the valve shaft clamping arm 412, when the tensioning motor 413 is running, the two valve shaft clamping arms 412 will move away from each other, thereby loosening the clamping of the valve shaft, but because the bearing has been partially plugged into the valve shaft at this time, the bearing clamp seat 510 will also achieve the clamping effect on the valve shaft, and after the two valve shaft clamping rings 416 move away, a passage space is left for the cross pressure end 630 and the bearing clamping ring 513, so that the cylinder 150 can smoothly press the bearing and automatically realize the docking assembly of the valve shaft and the bushing during the pressing process.

[0047] Among them, a lifting slide 511 is slidably installed on the bearing clamp seat 510, and two connecting rods 512 are installed on the side of the lifting slide 511. The ends of the connecting rods 512 are connected to the bearing clamp ring 513. A cross groove 610 is provided on the bearing clamp ring 513, and a cross pressing end 630 is provided at the bottom end of the pressure head 160. The cross pressing end 630 is correspondingly plugged into the cross groove 610, and the size of the cross pressing end 630 is larger than the cross groove 610.

[0048] For details, see Figure 7 and Figure 10 A pushing airbag 620 is installed on the inner side of the bearing clamp ring 513, and the pushing airbag 620 and the cross groove 610 are arranged alternately. A positioning air cylinder 516 is fixedly installed on the side of the bearing clamp seat 510, and a positioning pressure rod 515 is inserted in the positioning air cylinder 516. The other end of the positioning pressure rod 515 is connected to the lifting slide 511, and a lifting spring 514 is installed between the lifting slide 511 and the bearing clamp seat 510. The lifting spring 514 is sleeved on the outside of the positioning pressure rod 515 and the positioning air cylinder 516, and an air pipe 517 is connected between the positioning air cylinder 516 and the pushing airbag 620.

[0049] Furthermore, the edges of the cross pressing end 630 are all chamfered, and the edges of the bearing clamping ring 513 are also chamfered. When the cross pressing end 630 and the bearing clamping ring 513 are plugged in, the distance between the two bearing clamping rings 513 increases, and the clamped bearing slips.

[0050] The stiffness of the lifting spring 514 is greater than that of the return spring 176. When the return spring 176 is compressed, the bearing clamp 510 slides in the bearing press-fitting guide groove 524. When the lifting spring 514 is fully compressed, the bearing and the housing are pre-pressed.

[0051] The coordination of the tensioning motor, double-threaded lead screw, and valve shaft clamping arm enables automated valve shaft clamping and release. This eliminates the need for manual intervention to loosen the valve shaft, reducing manual intervention and labor intensity. During the press-fit process, the series of actions—loosening the valve shaft clamping arm, the bearing holder clamping the valve shaft, and the cylinder pressing the bearing—flow smoothly together, avoiding the pauses and waiting time that can occur with multiple independent steps and improving the fluidity of the production process.

[0052] Through the above technical solution, when the bearing pressing device at both ends of the electronic throttle body provided by the present invention is in use, when the bearing clamp 510 moves to the intersection of the bearing docking guide groove 523 and the bearing pressing guide groove 524, the bearing has been partially plugged into the valve shaft, and the middle and bottom of the valve shaft are both plugged into the shell. At this time, the cylinder 150 is started, and the pressure head 160 contacts the top of the bearing clamp 510 and presses down.

[0053] First, the return spring 176 is compressed, so that the bearing and the valve shaft are closer to the housing. In this process, the valve shaft clamping ring 416 releases the valve shaft. When the return spring 176 is fully compressed, the pressure head 160 continues to move downward. At this time, the pressure of the cross pressure end 630 on the cross groove 610 increases, and the lifting spring 514 begins to compress, so that the gas in the positioning cylinder 516 enters the push airbag 620. The push airbag 620 expands and pushes the bearing to slide along the inner wall of the bearing clamp ring 513. At the same time, the wedge-shaped pressure of the cross pressure end 630 on the cross groove 610 expands the gap of the bearing clamp ring 513, and the push airbag 620 pushes the bearing outward, so that the bearing's moving stroke is greater than the movement of the bearing clamp seat 510. Therefore, when the lifting spring 514 is almost compressed to the extreme, the bearing itself and the corresponding hole of the housing are already partially plugged in, so that it can be pressed again without offset and distortion.

[0054] At this time, the pressure head 160 continues to move downward, and the cross pressure end 630 and the cross groove 610 enter a deep engagement state, which not only improves the positioning accuracy, but also acts on the bearing to perform the final press-fitting of the bearing. The cross pressure end 630 presses the bearing and the remaining valve shaft into the housing, realizing the complete assembly of the valve shaft and the bushing, the complete assembly of the bearing and the valve shaft, and the press-fitting of the bearing and the housing.

[0055] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0056] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0057] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A device for pressing bearings at both ends of an electronic throttle body, comprising a frame (120), a cylinder (150) and a pressing head (160), wherein the pressing head (160) is mounted on the telescopic end of the cylinder (150), and is characterized in that: A fan-shaped press-fitting frame (110) is mounted on the frame (120), the cylinder (150) is mounted on the top of the fan-shaped press-fitting frame (110), a bushing guide groove (220), a shell guide groove (320), a valve shaft guide groove (420) and a bearing guide groove (520) are provided on the fan-shaped press-fitting frame (110), a bushing fixture (210), a shell fixture (310), a valve shaft clamp seat (410) and a bearing clamp seat (510) are correspondingly slidably mounted on the fan-shaped press-fitting frame (110), a movable arm (140) is rotatably mounted on the back side of the fan-shaped press-fitting frame (110), and the bushing fixture (210), the valve shaft clamp seat (410) and the bearing clamp seat (510) are slidably engaged with the movable arm (140); When the housing fixture (310) is located directly below the pressure head (160), the bushing is completely installed with the housing, and the bearing is initially plugged into the valve shaft; A lifting slide (511) is slidably mounted on the bearing clamp seat (510), and a lifting spring (514) is mounted between the lifting slide (511) and the bearing clamp seat (510). Two connecting rods (512) are mounted on the side of the lifting slide (511), and the ends of the connecting rods (512) are connected to a bearing clamp ring (513). A push airbag (620) is mounted on the inner side of the bearing clamp ring (513). The push airbag (620) and the cross groove (610) are arranged alternately. A cross groove (610) is provided on the bearing clamp ring (513). A cross pressing end (630) is provided at the bottom end of the pressure head (160). The cross pressing end (630) is plugged into the cross groove (610) and the size of the cross pressing end (630) is larger than the cross groove (610).

2. The device for pressing bearings at both ends of an electronic throttle body according to claim 1, characterized in that: The movable arm (140) is slidably mounted with a bushing slider (171), a housing slider (172), a valve shaft slider (173) and a bearing slider (174); sliding columns are slidably mounted in the bushing guide groove (220), the housing guide groove (320), the valve shaft guide groove (420) and the bearing guide groove (520), respectively; the corresponding sliding columns are respectively slidably mounted with the bushing slider (171), the housing slider (172), the valve shaft slider (173) and the bearing slider ( 174), the bushing slider (171) is connected to the bushing fixture (210), the housing slider (172) is connected to the housing fixture (310), the valve shaft slider (173) and the bearing slider (174) are respectively connected to the valve shaft clamp seat (410) and the bearing clamp seat (510), a reset plate (175) is fixedly installed on the side of the movable arm (140), and a reset spring (176) is installed between the bearing slider (174) and the reset plate (175).

3. The device for pressing bearings at both ends of an electronic throttle body according to claim 1, characterized in that: The bushing guide groove (220) includes a bushing feeding guide groove (221) located at the initial end and a bushing docking guide groove (223) located at the terminal end. A bushing movement guide groove (222) is connected between the bushing feeding guide groove (221) and the bushing docking guide groove (223). The diameter of the bushing docking guide groove (223) is larger than the diameter of the bushing feeding guide groove (221). When the bushing fixture (210) is located in the bushing guide groove (220), the bushing and the housing are plugged in.

4. The device for pressing bearings at both ends of an electronic throttle body according to claim 2, characterized in that: The valve shaft guide groove (420) comprises a valve shaft feeding guide groove (421) located at the initial end and a valve shaft docking guide groove (423) located at the terminal section, a valve shaft movement guide groove (422) is connected between the valve shaft feeding guide groove (421) and the valve shaft docking guide groove (423), and the diameter of the valve shaft docking guide groove (423) is smaller than the diameter of the valve shaft feeding guide groove (421).

5. The device for pressing bearings at both ends of an electronic throttle body according to claim 4, characterized in that: The valve shaft clamp seat (410) is provided with a tensioning groove (411), and a tensioning motor (413) is installed on the side of the valve shaft clamp seat (410). The tensioning motor (413) is connected to a double-threaded screw rod (414), and the double-threaded screw rod (414) is rotatably installed on the valve shaft clamp seat (410). A limiting column (415) is also fixedly installed on the valve shaft clamp seat (410), and a pair of valve shaft clamping arms (412) are slidably installed in the fan-shaped press-fitting frame (110). ), a pair of the valve shaft clamping arms (412) are slidably mounted on the limiting column (415) at the same time, and a pair of the valve shaft clamping arms (412) are respectively connected to the two threads of the double-threaded screw rod (414), and the ends of the valve shaft clamping arms (412) are integrally connected with the valve shaft clamping ring (416), and when the valve shaft clamping seat (410) is located directly below the pressure head (160), the tensioning motor (413) drives the two valve shaft clamping rings (416) to move away from each other.

6. The device for pressing bearings at both ends of an electronic throttle body according to claim 4, characterized in that: The bearing guide groove (520) includes a bearing loading guide groove (521) located at an initial end, the bearing loading guide groove (521) is connected to a bearing movement guide groove (522), the bearing movement guide groove (522) is connected to a bearing docking guide groove (523), the end of the bearing docking guide groove (523) is vertically connected to a bearing press-fitting guide groove (524), the bearing press-fitting guide groove (524) corresponds to the position of the pressure head (160), the diameter of the bearing docking guide groove (523) is smaller than the diameter of the bearing loading guide groove (521), and the diameter difference between the bearing loading guide groove (521) and the bearing docking guide groove (523) is greater than the diameter difference between the valve shaft loading guide groove (421) and the valve shaft docking guide groove (423).

7. The device for pressing bearings at both ends of an electronic throttle body according to claim 6, characterized in that: A positioning air cylinder (516) is fixedly installed on the side of the bearing clamp seat (510), a positioning pressure rod (515) is inserted into the positioning air cylinder (516), the other end of the positioning pressure rod (515) is connected to the lifting slide (511), a lifting spring (514) is sleeved on the outside of the positioning pressure rod (515) and the positioning air cylinder (516), and an air pipe (517) is connected between the positioning air cylinder (516) and the pushing air bag (620).

8. The device for pressing bearings at both ends of an electronic throttle body according to claim 6, characterized in that: The edges of the cross pressing end (630) are all chamfered, and the edges of the bearing clamping ring (513) are also chamfered. When the cross pressing end (630) and the bearing clamping ring (513) are plugged in, the distance between the two bearing clamping rings (513) increases, and the clamped bearing slips.

9. The device for pressing bearings at both ends of an electronic throttle body according to claim 7, characterized in that: The stiffness of the lifting spring (514) is greater than that of the return spring (176). When the return spring (176) is compressed, the bearing clamp seat (510) slides in the bearing press-fitting guide groove (524); when the lifting spring (514) is fully compressed, the bearing and the housing are pre-pressed.

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