V-5 Type External Control Variable Displacement Automotive Air Conditioning Compressor and Its Assembly Method

Abstract

The present invention discloses a V-5 type externally controlled variable displacement automotive air conditioning compressor and its assembly method, including a housing, a front cover, a rear cover, a cylinder block, a main shaft and a clutch. One end of the housing is fixed with the front cover by bolts, and the end of the housing away from the front cover is fixed with the rear cover by bolts. A cylinder block is fixed to the inner wall of the housing near the rear cover. The middle of the cylinder block is rotationally connected with the main shaft through a bearing. One end of the main shaft passes through the front cover and is fixed with the clutch. A sliding sleeve is slidably connected to the middle of the main shaft. The outside of the sliding sleeve is rotationally connected with a swing plate through a spherical bearing. One side of the swing plate is rotationally connected with an inclined plate through a thrust bearing. When assembling the sliding sleeve and the inclined plate in the present invention, the inclined plate is first clamped and fixed by a first clamping device, and then the sliding sleeve is fixed by a second clamping device. The angle of the sliding sleeve is adjusted by rotating a hand wheel, so that the pin hole on the sliding sleeve is aligned with the pin hole on the inclined plate, which is convenient for people to assemble.

Description

Technical Field

[0001] The present invention relates to the technical field of air-conditioning compressors, and particularly to a V-5 type externally controlled variable-volume automotive air-conditioning compressor and an assembly method thereof. Background Art

[0002] An automotive compressor is the core component of the entire automotive refrigeration system. Its main function is to transport and compress refrigerant vapor and ensure the normal operation of the refrigeration cycle. The performance of the compressor directly affects various indicators of the system refrigeration system, such as operating performance, noise, vibration, maintenance, and service life. Currently, direct connection type is usually adopted for sedans and small and medium-sized passenger vehicles and trucks, that is, the automotive air-conditioning compressor is installed on one side of the automotive engine and driven by the power of the main engine; independent engine drive is adopted for large buses;

[0003] When assembling the existing air compressor, the swash plate and the sliding sleeve are hinged through a shaft pin, and manual positioning is required, so the assembly is rather troublesome. For this reason, we propose a V-5 type externally controlled variable-volume automotive air-conditioning compressor and an assembly method thereof. Summary of the Invention

[0004] The purpose of the present invention is to provide a V-5 type externally controlled variable-volume automotive air-conditioning compressor to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A V-5 type externally controlled variable-volume automotive air-conditioning compressor includes a housing, a front cover, a rear cover, a cylinder block, a main shaft, and a clutch. One end of the housing is fixed with a front cover through bolts, and the end of the housing far from the front cover is fixed with a rear cover through bolts. One end of the inner wall of the housing close to the rear cover is fixed with a cylinder block. The middle of the cylinder block is rotationally connected with a main shaft through a bearing. One end of the main shaft passes through the front cover and is fixed with a clutch. A sliding sleeve is slidably connected to the middle of the main shaft. The outer side of the sliding sleeve is rotationally connected with a swash plate through a spherical bearing. One side of the swash plate is rotationally connected with an inclined plate through a thrust bearing. The middle of the inclined plate is hollow. The inner wall of the inclined plate is hinged to the sliding sleeve through a shaft pin. One end of the main shaft is fixed with a first fixing block. One side of the inclined plate is fixed with a second fixing block. One end of the first fixing block is hinged with a connecting rod through a shaft pin, and the end of the connecting rod close to the second fixing block is hinged to the second fixing block through a shaft pin. The side of the swash plate far from the inclined plate is rotationally connected with a piston rod through a universal ball head. One end of the piston rod is rotationally connected with a piston through a universal ball head, and the piston is slidably connected to the inner wall of the cylinder block.

[0006] A thrust bearing is installed between the swash plate and the inclined plate.

[0007] Sealing rings are equidistantly sleeved on the outer side of the piston.

[0008] The present invention also includes an assembly method for a V-5 type externally controlled variable displacement automotive air-conditioning compressor, which is completed in cooperation with an assembly device. The assembly device includes a fixed box, the upper end of the inner wall of the fixed box is fixed with a fixed table, a placement groove is opened in the middle of the fixed table, a through hole is opened in the middle of the placement groove, the upper end inside the fixed box is fixed with a first clamping device, the middle of the inner wall of the fixed box is fixed with an installation table, and the upper surface of the installation table is fixed with a second clamping device;

[0009] The assembly method for the V-5 type externally controlled variable displacement automotive air-conditioning compressor includes the following steps:

[0010] ① Place the swash plate in the placement groove, clamp it through the first clamping device, then place the sliding sleeve inside the swash plate inner wall, clamp it through the second clamping device, and adjust the angles of the sliding sleeve and the swash plate so that the pin holes on the sliding sleeve are aligned with the pin holes on the swash plate, and then hinge the swash plate and the sliding sleeve through a pin;

[0011] ② Connect the wobble plate to the sliding sleeve through a spherical bearing, connect the piston to the wobble plate through a piston rod, and hinge the first fixed block and the second fixed block through a connecting rod;

[0012] ③ Install the main shaft in the middle of the cylinder block, and install the piston in the compression cavity on the inner wall of the cylinder block;

[0013] ④ Close the front cover and the rear cover, and install the clutch.

[0014] Preferably, the first clamping device in the assembly device includes a chute, a slider, a clamping block, a slideway, a lever, a fixing plate, a turntable, a dial groove, a first worm gear ring, a mounting block, a first worm, and a servo motor. The chute is equidistantly opened on the inner wall of the placement groove, the slider is slidably connected to the inner wall of the chute, one end of the slider passes through the chute and is fixed with a clamping block, a slideway is opened at the lower end of the inner wall of the chute, one end of the slider close to the slideway is fixed with a lever, and the lever is slidably connected to the slideway. The fixing plate is fixed on the inner wall of the fixed box, and the middle of the fixing plate is hollow. The upper surface of the fixing plate is rotatably connected to the turntable through a bearing. The surface of the turntable is provided with a dial groove, and the lever is slidably connected to the inner wall of the dial groove. The first worm gear ring is fixed on the outside of the turntable. One end of the upper surface of the fixing plate is symmetrically fixed with mounting blocks. The middle of the two mounting blocks is rotatably connected to the first worm through a bearing, and the first worm is meshed with the first worm gear ring. A servo motor is fixed on one side of one of the mounting blocks, and the output end of the servo motor is fixed to the first worm.

[0015] Preferably, the second clamping device in the assembly device includes a clamping box, a support plate, a rotating groove, an L-shaped rod, a U-shaped rod, a shifting column, an electric push rod, a U-shaped plate, an arc-shaped clamping rod, a second worm gear ring and a second worm. The clamping box is fixed on the upper surface of the mounting table. The upper end of the inner wall of the clamping box is fixed with a support plate. The outer side of the support plate is symmetrically provided with rotating grooves. The inner walls of the rotating grooves are rotatably connected with L-shaped rods through pins. One end of the L-shaped rod is fixed with a U-shaped rod, and the two U-shaped rods are arranged staggeredly. A shifting column is slidably connected to the inner walls of the two U-shaped rods. The electric push rod is fixed on the inner wall of the clamping box. The output end of the electric push rod is fixed with a U-shaped plate, and the shifting column is fixedly connected with the U-shaped plate. The end of the L-shaped rod far from the U-shaped rod is fixed with an arc-shaped clamping rod. The lower end of the outer side of the clamping box is fixed with a second worm gear ring. One end of the inner wall of the fixed box close to the second worm gear ring is rotatably connected with a second worm through a bearing, and the second worm gear ring is meshed with the second worm.

[0016] Preferably, a hand wheel is fixed at one end of the second worm passing through the fixed box.

[0017] Preferably, the bottom of the fixed box is symmetrically fixed with supporting feet.

[0018] Preferably, the servo motor is a kind of reduction motor.

[0019] Preferably, a hidden groove is provided at one end of the sliding groove close to the clamping block, and the clamping block is slidably connected with the hidden groove.

[0020] Preferably, the clamping block is arranged in an L shape.

[0021] Preferably, the shifting groove is arranged obliquely.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] When assembling the sliding sleeve and the swash plate, the present invention first clamps and fixes the swash plate through the first clamping device, then fixes the sliding sleeve through the second clamping device, and adjusts the angle of the sliding sleeve by rotating the hand wheel, so that the pin hole on the sliding sleeve is aligned with the pin hole on the swash plate, which is convenient for people to assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic cross-sectional structure diagram of the compressor of the present invention;

[0025] Figure 2 is a schematic cross-sectional structure diagram of the swash plate of the present invention;

[0026] Figure 3 is a schematic cross-sectional structure diagram of the assembly device of the present invention;

[0027] Figure 4 is a schematic front view structure diagram of the assembly device of the present invention;

[0028] Figure 5 Schematic cross-sectional structure diagram of the second clamping device of the present invention;

[0029] Figure 6 is Figure 3 enlarged view at A in

[0030] Figure 7 Schematic structure diagram of the servo motor of the present invention.

[0031] In the figure: 1, housing; 2, front cover; 3, rear cover; 4, cylinder block; 5, main shaft; 6, clutch; 7, sliding sleeve; 8, swing plate; 9, swash plate; 10, first fixing block; 11, second fixing block; 12, connecting rod; 13, piston rod; 14, piston; 15, fixed box; 17, fixed table; 18, placement groove; 19, through hole; 20, first clamping device; 21, mounting table; 22, second clamping device; 23, chute; 24, slider; 25, clamping block; 26, slideway; 27, lever; 28, fixing plate; 29, turntable; 30, dialing groove; 31, first worm gear ring; 32, mounting block; 33, first worm; 34, servo motor; 35, clamping box; 36, support plate; 37, rotating groove; 38, L-shaped rod; 39, U-shaped rod; 40, dialing post; 41, electric push rod; 42, U-shaped plate; 43, arc-shaped clamping rod; 44, second worm gear ring; 45, second worm; 46, hand wheel; 47, support feet; 48, hidden groove. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Please refer to Figure 1 and Figure 2, A V-5 type externally controlled variable volume automotive air conditioning compressor in the illustration, includes a housing 1, a front cover 2, a rear cover 3, a cylinder block 4, a main shaft 5 and a clutch 6. One end of the housing 1 is fixed with a front cover 2 by bolts, and the end of the housing 1 away from the front cover 2 is fixed with a rear cover 3 by bolts. One end of the inner wall of the housing 1 close to the rear cover 3 is fixed with a cylinder block 4. The middle of the cylinder block 4 is rotatably connected with a main shaft 5 through a bearing. One end of the main shaft 5 passes through the front cover 2 and is fixed with a clutch 6. A sliding sleeve 7 is slidably connected to the middle of the main shaft 5. The outer side of the sliding sleeve 7 is rotatably connected with a swing plate 8 through a spherical bearing. One side of the swing plate 8 is rotatably connected with an inclined plate 9 through a thrust bearing. The middle of the inclined plate 9 is hollow. The inner wall of the inclined plate 9 is hinged with the sliding sleeve 7 through a pin. One end of the main shaft 5 is fixed with a first fixing block 10. One side of the inclined plate 9 is fixed with a second fixing block 11. One end of the first fixing block 10 is hinged with a connecting rod 12 through a pin, and the end of the connecting rod 12 close to the second fixing block 11 is hinged with the second fixing block 11 through a pin. The side of the swing plate 8 away from the lower plate is rotatably connected with a piston rod 13 through a universal ball head. One end of the piston rod 13 is rotatably connected with a piston 14 through a universal ball head, and the piston 14 is slidably connected with the inner wall of the cylinder block 4.

[0034] A thrust bearing is installed between the swing plate 8 and the inclined plate 9.

[0035] Sealing rings are equidistantly sleeved on the outer side of the piston 14.

[0036] Please refer to Figure 3 and Figure 6 As shown, the present invention also includes an assembly method for a V-5 type externally controlled variable volume automotive air conditioning compressor, which is completed by cooperating with an assembly device. The assembly device includes a fixed box 15. The bottom of the fixed box 15 is symmetrically fixed with support feet 47. The upper end of the inner wall of the fixed box 15 is fixed with a fixed table 17. A placement groove 18 is opened in the middle of the fixed table 17. A through hole 19 is opened in the middle of the placement groove 18. The upper end inside the fixed box 15 is fixed with a first clamping device 20. The middle of the inner wall of the fixed box 15 is fixed with an installation table 21. The upper surface of the installation table 21 is fixed with a second clamping device 22;

[0037] The assembly method for the V-5 type externally controlled variable volume automotive air conditioning compressor includes the following steps:

[0038] ① Place the inclined plate 9 in the placement groove 18, clamp it through the first clamping device 20, then place the sliding sleeve 7 on the inner wall of the inclined plate 9, clamp it through the second clamping device 22, and adjust the angles of the sliding sleeve 7 and the inclined plate 9 so that the pin holes on the sliding sleeve are aligned with the pin holes on the inclined plate 9, and then hinge the inclined plate 9 and the sliding sleeve 7 through a pin;

[0039] ② Connect the swing plate 8 to the sliding sleeve 7 through the spherical bearing, connect the piston 14 to the swing plate 8 through the piston rod 13, and hinge the first fixed block 10 to the second fixed block 11 through the connecting rod 12;

[0040] ③ Install the main shaft 5 into the middle of the cylinder body 4, and install the piston 14 into the compression chamber on the inner wall of the cylinder body 4;

[0041] ④ Close the front cover 2 and the rear cover 3, and install the clutch 6.

[0042] Please refer to Figure 3 , Figure 6 and Figure 7 As shown, the first clamping device 20 in the assembly device includes a slide groove 23, a slider 24, a clamping block 25, a slideway 26, a lever 27, a fixing plate 28, a turntable 29, a slide groove 30, a first worm ring 31, a mounting block 32, a first worm 33 and a servo motor 34. The inner wall of the placement groove 18 is equidistantly provided with slide grooves 23, the inner wall of the slide groove 23 is slidably connected with a slider 24, one end of the slider 24 passes through the slide groove 23 and is fixed with a clamping block 25, the clamping block 25 is arranged in an L shape, and the A slideway 26 is provided at the lower end of the inner wall of the slide groove 23, a lever 27 is fixed to one end of the slider 24 close to the slideway 26, and the lever 27 is slidably connected to the slideway 26, a fixing plate 28 is fixed to the inner wall of the fixing box 15, and the middle of the fixing plate 28 is hollow, a turntable 29 is rotatably connected to the upper surface of the fixing plate 28 through a bearing, a shifting groove 30 is fastened on the surface of the turntable 29, and the lever 27 is slidably connected to the inner wall of the shifting groove 30, the shifting groove 30 is inclined, and the turntable 29 A first worm gear ring 31 is fixed on the outside, a mounting block 32 is symmetrically fixed on one end of the upper surface of the fixing plate 28, a first worm 33 is rotatably connected to the middle of the two mounting blocks 32 through a bearing, and the first worm 33 is meshed with the first worm gear ring 31, a servo motor 34 is fixed on one side of one mounting block 32, and the output end of the servo motor 34 is fixedly connected to the first worm 33, the servo motor 34 is a reduction motor, people first place the swash plate 9 in the placement slot 18, and then control The controller controls the servo motor 34 to rotate, thereby driving the first worm 33 to rotate, so that the first worm 33 drives the first worm wheel ring 31 to rotate, and then drives the turntable 29 to rotate, so that the shifting groove 30 on the turntable 29 drives the shifting rod 27 to slide, and because the shifting rod 27 is limited by the slideway 26, the shifting rod 27 can only slide along the slideway 26, and then can drive the shifting rod 27 to slide, so that the shifting rod 27 drives the slider 24 to slide, so that the three sliders 24 are close to each other, and then drives the clamping block 25 to clamp the inclined plate 9.

[0043] Please refer to Figure 3 , Figure 4 and Figure 5As shown, the second clamping device 22 in the assembly device includes a clamping box 35, a support plate 36, a rotation groove 37, an L-shaped rod 38, a U-shaped rod 39, a lever 40, an electric push rod 41, a U-shaped plate 42, an arc clamping rod 43, a second worm ring 44 and a second worm 45. The clamping box 35 is fixed on the upper surface of the mounting table 21, and the support plate 36 is fixed on the upper end of the inner wall of the clamping box 35. The outer side of the support plate 36 is symmetrically provided with a rotation groove 37. The inner wall of the rotation groove 37 is rotatably connected to the L-shaped rod 38 through an axle pin. shaped rod 38, one end of the L-shaped rod 38 is fixed with a U-shaped rod 39, and the two U-shaped rods 39 are staggered, the inner walls of the two U-shaped rods 39 are slidably connected with a lever 40, an electric push rod 41 is fixed to the inner wall of the clamping box 35, a U-shaped plate 42 is fixed to the output end of the electric push rod 41, and the lever 40 is fixedly connected to the U-shaped plate 42, an arc-shaped clamping rod 43 is fixed to the end of the L-shaped rod 38 away from the U-shaped rod 39, and a second worm gear ring 44 is fixed to the lower end of the outer side of the clamping box 35. The inner wall of the fixed box 15 is connected to the second worm 45 through a bearing, and the second worm ring 44 is meshed with the second worm 45. The second worm 45 passes through the fixed box 15 and is fixed with a hand wheel 46. The sliding sleeve 7 is passed through the inner wall of the swash plate 9 and placed on the support plate 36. At this time, the electric push rod 41 is controlled by the controller to rise and fall, and the electric push rod 41 drives the U-shaped plate 42 to slide downward, thereby driving the lever 40 to slide downward, so that the lever 40 moves the two A U-shaped rod 39 is provided and slides on the inner wall of the U-shaped rod 39, thereby driving the L-shaped rod 38 to flip, so that the L-shaped rod 38 drives the arc clamping rod 43 to clamp the sliding sleeve 7 to fix the sliding sleeve 7, and then people rotate the hand wheel 46 to drive the second worm 45 to rotate, so that the second worm 45 drives the second worm wheel ring 44 to rotate, and then can drive the clamping box 35 to rotate, drive the clamped sliding sleeve 7 to rotate, and adjust the shaft pin hole on the sliding sleeve 7 to align with the shaft pin hole on the inclined plate 9 for subsequent installation.

[0044] Please refer to Figure 6 As shown, a hidden groove 48 is formed at one end of the slide groove 23 close to the clamping block 25 , and the clamping block 25 is slidably connected to the hidden groove 48 , so as to facilitate hiding of the clamping block 25 .

[0045] Working principle:

[0046] When assembling the sliding sleeve 7 and the swash plate 9, people first place the swash plate 9 in the placement groove 18, and then control the servo motor 34 to rotate through the controller, thereby driving the first worm 33 to rotate, so that the first worm 33 drives the first worm wheel ring 31 to rotate, and then drives the turntable 29 to rotate, so that the shifting groove 30 on the turntable 29 shifts the shifting rod 27 to slide, and because the shifting rod 27 is limited by the slideway 26, the shifting rod 27 can only slide along the slideway 26, and then can drive the shifting rod 27 to slide, so that the shifting rod 27 drives the slider 24 to slide, so that the three sliders 24 are close to each other, and then drives the clamping block 25 to clamp the swash plate 9, and then people pass the sliding sleeve 7 through the inner wall of the swash plate 9 and place it on the support plate 3 6, at this time, the controller controls the electric push rod 41 to rise and fall, and the electric push rod 41 drives the U-shaped plate 42 to slide downward, thereby driving the shifting column 40 to slide downward, so that the shifting column 40 shifts the two U-shaped rods 39 and slides on the inner wall of the U-shaped rod 39, thereby driving the L-shaped rod 38 to flip, so that the L-shaped rod 38 drives the arc clamping rod 43 to clamp the sliding sleeve 7 to fix the sliding sleeve 7, and then people rotate the hand wheel 46 to drive the second worm 45 to rotate, so that the second worm 45 drives the second worm wheel ring 44 to rotate, and then can drive the clamping box 35 to rotate, drive the clamped sliding sleeve 7 to rotate, and adjust the shaft pin hole on the sliding sleeve 7 to align with the shaft pin hole on the swash plate 9 for subsequent installation.

[0047] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An assembling method for an externally controlled variable displacement automotive air-conditioning compressor of V-5 type, which is completed by cooperating with an assembling device, is characterized in that: The described V-5 type externally controlled variable displacement automotive air-conditioning compressor includes a housing (1), a front cover (2), a rear cover (3), a cylinder block (4), a main shaft (5), and a clutch (6). One end of the housing (1) is fixed with the front cover (2) by bolts, and the end of the housing (1) away from the front cover (2) is fixed with the rear cover (3) by bolts. One end of the inner wall of the housing (1) close to the rear cover (3) is fixed with the cylinder block (4). The middle of the cylinder block (4) is rotatably connected with the main shaft (5) through a bearing. One end of the main shaft (5) passes through the front cover (2) and is fixed with the clutch (6). A sliding sleeve (7) is slidably connected to the middle of the main shaft (5). The outer side of the sliding sleeve (7) is rotatably connected with a swash plate (8) through a spherical bearing. One side of the swash plate (8) is rotatably connected with an inclined plate (9). The middle of the inclined plate (9) is hollow. The inner wall of the inclined plate (9) is hinged with the sliding sleeve (7) through a pin. One end of the main shaft (5) is fixed with a first fixing block (10). One side of the inclined plate (9) is fixed with a second fixing block (11). One end of the first fixing block (10) is hinged with a connecting rod (12) through a pin, and the end of the connecting rod (12) close to the second fixing block (11) is hinged with the second fixing block (11) through a pin. The side of the swash plate (8) away from the inclined plate (9) is rotatably connected with a piston rod (13) through a universal ball head. One end of the piston rod (13) is rotatably connected with a piston (14) through a universal ball head, and the piston (14) is slidably connected with the inner wall of the cylinder block (4); A thrust bearing is installed between the swash plate (8) and the inclined plate (9); Sealing rings are equidistantly sleeved on the outer side of the piston (14); The assembly device includes a fixed box (15). The upper end of the inner wall of the fixed box (15) is fixed with a fixed table (17). A placement groove (18) is opened in the middle of the fixed table (17). A through hole (19) is opened in the middle of the placement groove (18). The upper end inside the fixed box (15) is fixed with a first clamping device (20). The middle of the inner wall of the fixed box (15) is fixed with an installation table (21). The upper surface of the installation table (21) is fixed with a second clamping device (22); The assembly method of the V-5 type externally controlled variable displacement automotive air-conditioning compressor includes the following steps: ① Place the inclined plate (9) in the placement groove (18), clamp it through the first clamping device (20), then place the sliding sleeve (7) inside the inner wall of the inclined plate (9), clamp it through the second clamping device (22), and adjust the angles of the sliding sleeve (7) and the inclined plate (9) so that the pin holes on the sliding sleeve (7) are aligned with the pin holes on the inclined plate (9), and then hinge the inclined plate (9) and the sliding sleeve (7) through a pin; ② Connect the swash plate (8) with the sliding sleeve (7) through a spherical bearing, connect the piston (14) with the swash plate (8) through the piston rod (13), and hinge the first fixing block (10) and the second fixing block (11) through the connecting rod (12); ③ Install the main shaft (5) into the middle of the cylinder block (4), and install the piston (14) into the compression chamber of the inner wall of the cylinder block (4); ④ Close the front cover (2) and the rear cover (3), and install the clutch (6).

2. The assembling method of a V-5 type externally controlled variable displacement automotive air conditioning compressor according to claim 1, characterized in that: The first clamping device (20) in the assembly device includes a chute (23), a slider (24), a clamping block (25), a slideway (26), a lever (27), a fixing plate (28), a turntable (29), a dial groove (30), a first worm gear ring (31), a mounting block (32), a first worm (33) and a servo motor (34). The inner wall of the placement groove (18) is equidistantly provided with chutes (23). The inner wall of the chute (23) is slidably connected with a slider (24). One end of the slider (24) passes through the chute (23) and is fixed with a clamping block (25). The lower end of the inner wall of the chute (23) is provided with a slideway (26). One end of the slider (24) close to the slideway (26) is fixed with a lever (27), and the lever (27) is slidably connected with the slideway (26). The inner wall of the fixed box (15) is fixed with a fixing plate (28), and the middle of the fixing plate (28) is hollow. The upper surface of the fixing plate (28) is rotatably connected with a turntable (29) through a bearing. The surface of the turntable (29) is provided with a dial groove (30), and the lever (27) is slidably connected with the inner wall of the dial groove (30). The outer side of the turntable (29) is fixed with a first worm gear ring (31). One end of the upper surface of the fixing plate (28) is symmetrically fixed with mounting blocks (32). The middle of the two mounting blocks (32) is rotatably connected with a first worm (33) through a bearing, and the first worm (33) is meshed with the first worm gear ring (31). One side of one mounting block (32) is fixed with a servo motor (34), and the output end of the servo motor (34) is fixed with the first worm (33).

3. The assembling method of a V-5 type externally controlled variable displacement automotive air conditioning compressor according to claim 2, characterized in that: The second clamping device (22) in the assembly device includes a clamping box (35), a support plate (36), a rotating groove (37), an L-shaped rod (38), a U-shaped rod (39), a shifting column (40), an electric push rod (41), a U-shaped plate (42), an arc-shaped clamping rod (43), a second worm gear ring (44) and a second worm (45). A clamping box (35) is fixed on the upper surface of the installation table (21). A support plate (36) is fixed at the upper end of the inner wall of the clamping box (35). Rotating grooves (37) are symmetrically formed on the outer side of the support plate (36). An L-shaped rod (38) is rotatably connected to the inner wall of the rotating groove (37) through a shaft pin. One end of the L-shaped rod (38) is fixed with a U-shaped rod (39), and the two U-shaped rods (39) are arranged in a staggered manner. A shifting column (40) is slidably connected to the inner walls of the two U-shaped rods (39). An electric push rod (41) is fixed to the inner wall of the clamping box (35). The output end of the electric push rod (41) is fixed with a U-shaped plate (42), and the shifting column (40) is fixedly connected to the U-shaped plate (42). The end of the L-shaped rod (38) far from the U-shaped rod (39) is fixed with an arc-shaped clamping rod (43). A second worm gear ring (44) is fixed to the lower end of the outer side of the clamping box (35). One end of the inner wall of the fixed box (15) close to the second worm gear ring (44) is rotatably connected to a second worm (45) through a bearing, and the second worm gear ring (44) is meshed with the second worm (45).

4. The assembling method of a V-5 type externally controlled variable displacement automotive air-conditioning compressor according to claim 3, characterized in that: One end of the second worm (45) passes through the fixed box (15) and is fixed with a hand wheel (46).

5. The assembling method of a V-5 type externally controlled variable displacement automotive air-conditioning compressor according to claim 1, characterized in that: Support feet (47) are symmetrically fixed to the bottom of the fixed box (15).

6. The assembling method of a V-5 type externally controlled variable displacement automotive air conditioning compressor according to claim 2, characterized in that: The servo motor (34) is a kind of reduction motor.

7. The assembling method of a V-5 type externally controlled variable displacement automotive air-conditioning compressor according to claim 2, wherein: A hidden groove (48) is formed at one end of the sliding groove (23) close to the clamping block (25), and the clamping block (25) is slidably connected to the hidden groove (48).

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