Hinge tapping equipment for vehicle-mounted refrigerator

Abstract

The invention relates to the field of hinge trepanning equipment, and discloses vehicle-mounted refrigerator hinge trepanning equipment which comprises a machining table, a trepanning module and a rear baffle, the trepanning module and the rear baffle are fixedly mounted on the machining table, a clamping seat is arranged on the machining table, and a supporting assembly used for supporting a workpiece is arranged in the clamping seat. A driving assembly used for driving the clamping base to move and in transmission connection with the supporting assembly is arranged on the machining table. Through cooperation of the rear stopper, the clamping seat, the driving assembly, the supporting assembly and the like, after a workpiece is limited by the clamping seat and the rear stopper, the supporting assembly can automatically rotate to be inserted into the workpiece and be attached up and down, so that the workpiece can be effectively supported, the workpiece is prevented from being bent and deformed when the trepanning module trepans, the trepanning effect on the workpiece can be guaranteed, and the work efficiency is improved. And the effect is better when the device is suitable for workpieces with small wall thickness sizes.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hinge drilling equipment, in particular to a vehicle-mounted refrigerator hinge drilling equipment. BACKGROUND

[0002] Drilling is a machining process for the metal parts of the hinge itself (such as cup body, base, arm body, etc.), the purpose is to realize the assembly and fixation of the hinge, functional adjustment or component connection; drilling operation includes initial forming punching drilling, and also includes precise drilling after forming, and then the subsequent assembly requirements can be met.

[0003] For example, Chinese Patent No. CN114833604B discloses a hinge machining equipment, which includes a machining table, the top outer wall of the machining table is provided with a mounting frame, and the top inner wall of the mounting frame is provided with a drilling equipment, the drilling equipment is located below a fixing table, the fixing table is internally provided with a mounting cavity, and the top outer wall of the fixing table is provided with a groove, the same number of sliding grooves are formed on the two sides of the groove, and the sliding grooves are in communication with the mounting cavity, the inner wall of one side of the sliding groove is slidably connected with a moving block one, and the inner wall of the other side of the sliding groove is slidably connected with a moving block two, the moving block one and the moving block two are internally provided with an inner cavity, and the top of the inner cavity is slidably connected with an extension column. The extension column and the fixing plate can fix the two sides and the top of the hinge, avoid the shaking of the hinge on the fixing table during drilling, and cause the incorrect position of the through hole on the hinge, thereby affecting the product quality.

[0004] The application fixes the two sides and the top of the hinge through the extension column and the fixing plate, however, the inside of some existing hinge workpieces is provided with a groove for assembly, the above fixing method will squeeze the workpiece and the inside of the workpiece is suspended without support, which will cause the bending damage of the workpiece during drilling operation, and will affect the drilling quality of the workpiece, and has certain use limitation.

[0005] Therefore, it is necessary to provide a vehicle-mounted refrigerator hinge drilling equipment to solve the above technical problems. SUMMARY

[0006] The present application aims to provide a vehicle-mounted refrigerator hinge drilling equipment to solve the problems in the background art.

[0007] To achieve the above purpose, a vehicle-mounted refrigerator hinge drilling equipment is designed, which can limit the workpiece and provide support by inserting into the workpiece, thereby improving the support effect and ensuring the drilling effect.

[0008] Based on the above idea, the present application provides the following technical scheme: A vehicle-mounted refrigerator hinge trepanning equipment, comprising a machining table, a trepanning module fixedly installed on the machining table and a backstop, the machining table is provided with a clamping seat, the inside of the clamping seat is provided with a supporting assembly for supporting a workpiece, and the machining table is provided with a driving assembly for driving the clamping seat to move and in transmission connection with the supporting assembly; the driving assembly drives the clamping seat and the supporting assembly to move, when the workpiece abuts against the clamping seat and the backstop, the driving assembly can drive the supporting assembly to rotate out of the clamping seat and insert into the workpiece.

[0009] As a further scheme of the present application: the driving assembly comprises a cylinder fixedly installed on the machining table, the output shaft of the cylinder is fixedly installed with a connecting rod, the first spring is fixedly installed between the connecting rod and the clamping seat, and the end of the connecting rod is inserted into the clamping seat and fixedly installed with a rack in transmission connection with the supporting assembly.

[0010] As a further scheme of the present application: the rack is made of flexible material and in a U-shaped state as a whole based on the clamping seat.

[0011] As a further scheme of the present application: the supporting assembly comprises a supporting rod rotatably installed in the clamping seat and a pad for supporting the workpiece, the supporting rod and the pad are coaxially in transmission and can synchronously rotate, and the outer surface of the supporting rod is fixedly installed with a gear in connection with the rack.

[0012] As a further scheme of the present application: the pad is designed in a whole annular shape; when the rack drives the gear to rotate, the pad can be driven to rotate by 180 degrees through the supporting rod.

[0013] As a further scheme of the present application: the top of the machining table is provided with a through hole, and the through hole partially coincides with the rotating track of the pad based on the supporting rod.

[0014] As a further scheme of the present application: the pad comprises a first arc segment fixedly connected with the supporting rod and a second arc segment fixedly connected with the first arc segment, and the second arc segment is made of flexible material and can be deformed.

[0015] As a further scheme of the present application: the first arc segment and the second arc segment both comprise a base, the inside of the base is elastically connected with a sliding plate through a second spring, the two bases and the two sliding plates are fixedly connected, and the base of the first arc segment is coaxially in transmission and can synchronously rotate with the supporting rod.

[0016] As a further scheme of the present application: the base corresponding to the first arc segment is assembled in a key shaft type between the supporting rod, and the bottom of the base is provided with an arc surface.

[0017] As a further scheme of the present application: the surface of the clamping seat close to the backstop is provided in an arc shape, and the surface of the clamping seat is provided with an opening for the rotation of the supporting assembly.

[0018] Compared with the prior art, the present application has the beneficial effects that through the cooperation between the rear stop, the clamping seat, the driving assembly and the supporting assembly, when the workpiece is limited by the clamping seat and the rear stop, the supporting assembly can be automatically inserted into the workpiece and attached up and down, thereby effectively supporting the workpiece, avoiding the bending deformation of the workpiece when the hole opening module is opening, and further ensuring the hole opening effect of the workpiece, and the effect is better when the wall thickness size of the workpiece is smaller.

[0019] Through the rotation of the supporting assembly based on the clamping seat, after being inserted into the workpiece, the workpiece can be supported, and the subsequent hole opening module can be easily separated from the workpiece after the hole opening is completed, avoiding the bending deformation of the workpiece caused by the pulling of the hole opening module when it is rising and resetting, and further ensuring the overall quality of the workpiece is reliable, so the practicability is higher. BRIEF DESCRIPTION OF DRAWINGS

[0020] The present application will be further described below in combination with the drawings and embodiments:

[0021] Figure 1 It is a perspective view of the overall structure of the present application;

[0022] Figure 2 It is a structure diagram of the clamping seat and the rear stop of the present application;

[0023] Figure 3 It is a structure diagram of the internal structure of the clamping seat of the present application;

[0024] Figure 4 It is Figure 3 It is an enlarged view of structure A in the middle;

[0025] Figure 5 It is a structure diagram of the cushion block and the workpiece of the present application;

[0026] Figure 6 It is a structure diagram of the first arc segment and the second arc segment of the present application;

[0027] Figure 7 It is a structure diagram of the second arc segment and the groove of the present application;

[0028] Figure 8 It is a structure diagram of the opening and the arc surface of the present application;

[0029] Figure 9 It is a structure diagram of the base and the sliding plate of the present application;

[0030] Figure 10 It is a structure diagram of the sliding plate and the second spring of the present application.

[0031] In the figure: 1, processing table; 2, opening module; 3, backstop; 4, clamping seat; 5, driving assembly; 6, supporting assembly; 7, workpiece; 8, camber; 401, opening; 501, air cylinder; 502, connecting rod; 503, first spring; 504, rack; 601, support rod; 602, cushion block; 603, gear; 6021, first arc segment; 6022, second arc segment; 6023, base; 6024, sliding plate; 6025, second spring; 701, groove. DETAILED DESCRIPTION

[0032] Example one:

[0033] Please refer to Figures 1 to 5 , the embodiment of the present application provides a kind of vehicle refrigerator hinge opening equipment, for processing the workpiece 7 with groove 701 and the wall thickness size smaller, specifically applicable to the corresponding workpiece 7 on vehicle refrigerator, mainly for guaranteeing the supporting effect and opening effect of workpiece 7.The equipment includes processing table 1, opening module 2 and backstop 3 fixedly installed on processing table 1, processing table 1 is provided with clamping seat 4, clamping seat 4 cooperates with backstop 3 for limiting workpiece 7, to facilitate subsequent opening module 2 opening work of workpiece 7;Wherein, opening module 2 is existing mature technology, not detailed here.

[0034] In the above structure, as Figure 1 Indicated, the rear surface of clamping seat 4 is set to arc, when workpiece 7 is placed on processing table 1, clamping seat 4 can be driven to move synchronously by pushing to backstop 3 direction, finally workpiece 7 can be clamped between clamping seat 4 and backstop 3;And because the arc setting of clamping seat 4, workpiece 7 can be at the center along left-right direction based on clamping seat 4, so as to realize the center positioning of workpiece 7 on processing table 1, facilitate subsequent opening module 2 to workpiece 7 positioning and opening operation.

[0035] Further, as Figure 1 Indicated, the inside of clamping seat 4 is provided with supporting assembly 6 for supporting workpiece 7, supporting assembly 6 is hidden in the inside of clamping seat 4 in initial state, processing table 1 is provided with driving assembly 5 for driving clamping seat 4 to move and transmission connection with supporting assembly 6;When driving assembly 5 starts, it can drive clamping seat 4 and supporting assembly 6 to move synchronously, until workpiece 7 and clamping seat 4 and backstop 3 are all abutted, then clamping seat 4 is blocked and can not move again, while driving assembly 5 can drive supporting assembly 6 to turn out from clamping seat 4 and insert into the groove 701 of workpiece 7, and supporting assembly 6 can be fitted with the upper and lower groove wall of groove 701 at this time, thereby realizing effective support to workpiece 7, avoiding workpiece 7 from bending deformation during processing, which can guarantee the subsequent opening effect.

[0036] Referring to Figures 2 to 4In the embodiment, preferably, the driving assembly 5 comprises a cylinder 501 fixedly installed on the machining table 1, an output shaft of the cylinder 501 is fixedly installed with a connecting rod 502, the connecting rod 502 is fixedly installed with a first spring 503 between the connecting rod 502 and the clamping seat 4, the first spring 503 enables the clamping seat 4 to have a tendency to move away from the connecting rod 502, and when the connecting rod 502 moves, the clamping seat 4 is driven to move synchronously with the connecting rod 502 through the first spring 503.

[0037] Further, as shown in the drawings, an end of the connecting rod 502 away from the cylinder 501 is inserted into the clamping seat 4 and fixedly installed with a rack 504 in transmission connection with the supporting assembly 6, the rack 504 is made of flexible material and arranged in a U shape based on the clamping seat 4, so as not to protrude from the clamping seat 4, and on the basis of ensuring transmission with the supporting assembly 6, contact interference with the workpiece 7 can be avoided. Specifically, a frame for limiting the rack 504 can be additionally installed in the clamping seat 4, for ensuring movement of the rack 504 in the U shape. Figure 4

[0038] Referring to the drawings, Figures 2 to 4 In the embodiment, preferably, the supporting assembly 6 comprises a supporting rod 601 rotatably installed in the clamping seat 4, an outer surface of the supporting rod 601 is fixedly installed with a pad 602 corresponding in position to the groove 701, in the initial state, the supporting rod 601 drives the pad 602 to be hidden in the clamping seat 4, when the supporting rod 601 rotates, the pad 602 is driven to rotate out of the clamping seat 4 and inserted into the groove 701, so as to realize support for the workpiece 7.

[0039] In the above structure, the outer surface of the supporting rod 601 is further fixedly installed with a gear 603 connected with the rack 504, rotation and reset of the supporting rod 601 can be realized through the gear 603 and the rack 504; in the initial stage of movement of the connecting rod 502 driven by the cylinder 501, since the workpiece 7 does not contact the clamping seat 4 and the rear stop 3, the clamping seat 4 can still slide synchronously with the connecting rod 502, at this time, the rack 504 does not drive the gear 603 to rotate, when the workpiece 7 contacts the clamping seat 4 and the rear stop 3, the clamping seat 4 is limited, at this time, movement of the connecting rod 502 drives the rack 504 to move, so as to make the gear 603 rotate.

[0040] Referring to the drawings, Figure 2 In the embodiment, preferably, the side wall of the clamping seat 4 is provided with an opening 401 for sliding of the pad 602, the opening 401 enables the pad 602 to be smoothly rotated out of the clamping seat 4, and also enables the pad 602 to be smoothly retracted into the clamping seat 4.

[0041] ​In use, the workpiece 7 is placed on the machining table 1, and the air cylinder 501 is started to drive the connecting rod 502 to move backward, the connecting rod 502 drives the clamping seat 4 to move synchronously through the first spring 503, and the clamping seat 4 can push the workpiece 7 to move backward synchronously when contacting the workpiece 7 until the workpiece 7 contacts the clamping seat 4 and the rear stop 3, at which time the clamping seat 4 is limited; then the air cylinder 501 continues to start to drive the connecting rod 502 to move, at which time the first spring 503 is compressed and the rack 504 can drive the gear 603 to rotate, the gear 603 drives the pad 602 to rotate out of the clamping seat 4 and insert into the groove 701 through the support rod 601, and the upper and lower sides of the pad 602 are respectively fitted with the upper and lower groove walls of the groove 701, which can effectively support the workpiece 7.

[0042] In summary, through the cooperation of the support rod 601, the pad 602, the clamping seat 4 and the opening 401, when the workpiece 7 is limited by the clamping seat 4 and the rear stop 3, the pad 602 can automatically rotate into the groove 701 and be fitted up and down, thereby effectively supporting the workpiece 7, avoiding bending deformation of the workpiece 7 during the opening of the opening module 2, and further ensuring the opening effect of the workpiece 7, and the effect is better when the workpiece 7 has a smaller wall thickness.

[0043] Through the setting of the clamping seat 4 and the rear stop 3, the workpiece 7 can be effectively limited, and the arc shape can realize the center positioning of the workpiece 7 based on the machining table 1, which is convenient for the positioning of the opening position of the workpiece 7 by the subsequent opening module 2, and further facilitates the overall opening operation.

[0044] Through the rotation of the pad 602 based on the clamping seat 4, after rotating and inserting into the groove 701, it can not only support the workpiece 7, but also facilitate the subsequent opening module 2 to quickly separate from the workpiece 7 after opening is completed, avoiding bending deformation of the workpiece 7 caused by pulling of the opening module 2 during upward resetting, which can further ensure the overall quality of the workpiece 7, and therefore has higher practicality.

[0045] Example two:

[0046] Please refer to Figures 1 to 7 On the basis of example one, in order to further improve the support effect of the workpiece 7, the pad 602 is improved: at this time, the pad 602 is designed as a whole ring, and when the connecting rod 502 drives the rack 504 to move, the rack 504 can drive the support rod 601 and the pad 602 to rotate 180 degrees through the gear 603, forming a state as shown in Figure 5 Figure 5 The dashed circle corresponds to the state of the pad 602 after rotating 180 degrees.

[0047] ​Through the above design, on the one hand, the cushion block 602 is symmetrically distributed inside the workpiece 7 by rotating 180 degrees, providing better support effect for the workpiece 7; on the other hand, the annular design can leave a space inside, so that the hole opening module 2 does not interfere with the cushion block 602 when punching; on the other hand, it can also cover the debris generated during the hole opening operation, avoiding the debris from flying and increasing the subsequent cleaning burden; finally, the annular cushion block 602 can push the debris accumulated inside out of the lower groove wall of the groove 701 at one time when it is reset, thereby effectively reducing the debris residue in the groove 701, further reducing the subsequent cleaning trouble, and the overall functionality is stronger.

[0048] In this embodiment, as shown in Figure 5 , a through hole (not shown in the figure) can be provided at the bottom of the workpiece 7 and at the right side of the workpiece 7 on the machining table 1, and the through hole provided on the right side coincides with the movement track of the cushion block 602. The through hole can make the debris generated by the hole opening flow down on the one hand, and the debris pushed out by the cushion block 602 can flow down at one time on the other hand, which can further reduce the cleaning trouble of the debris and will not affect the conveying of the workpiece 7 after the hole opening is completed. Of course, the through hole will not affect the hole opening operation and conveying of the workpiece 7.

[0049] Further, as shown in Figure 6 and Figure 7 , the cushion block 602 includes a first arc segment 6021 fixedly connected with the supporting rod 601 and a second arc segment 6022 fixedly connected with the first arc segment 6021, the arc length size of the first arc segment 6021 is greater than the corresponding arc length size of the second arc segment 6022, the first arc segment 6021 is made of a rigid material and will not deform, and the second arc segment 6022 is made of a flexible material and can deform. In this way, the diameter size of the annular cushion block 602 can be correspondingly increased. At this time, when the supporting rod 601 drives the first arc segment 6021 and the second arc segment 6022 to rotate, the second arc segment 6022 can be in contact with the groove wall of the groove 701 and deformed.

[0050] Through the above design, the cushion block 602 can still be symmetrically distributed inside the workpiece 7 to ensure the support effect, and the second arc segment 6022 can deform and fit the groove 701, so that the diameter size of the annular cushion block 602 can be correspondingly increased. At this time, the space left in the annular cushion block 602 is further increased, and the distance size between the cushion block 602 and the hole to be machined of the workpiece 7 is larger, which can further avoid the interference between the hole opening module 2 and the cushion block 602 during the hole opening operation, and the cushion block 602 can further penetrate into the inside of the workpiece 7 and be symmetrically distributed, which can further improve the support effect for the workpiece 7.

[0051] At the same time, the cushion block 602 can also be suitable for use with workpieces 7 of different sizes, and the size corresponds Figure 7From a top-down view, the width of workpiece 7 along the front-to-back direction is such that there is no need to worry about the pad 602 overlapping with the hole to be drilled on workpiece 7, which would affect the drilling operation. Therefore, it can also effectively improve the overall applicability.

[0052] Example 3:

[0053] Please see Figures 1 to 10 Based on Embodiment 2, in order to further ensure the support effect of workpiece 7, both the first arc segment 6021 and the second arc segment 6022 include a base 6023. The interior of the base 6023 is elastically connected to a sliding plate 6024 through a second spring 6025. The second spring 6025 causes the sliding plate 6024 to have a tendency to rise along the base 6023, so that the sliding plate 6024 has space to rise and fall along the base 6023. Correspondingly, the base 6023 of the first arc segment 6021 is fixedly connected to the support rod 601 and the base 6023 of the second arc segment 6022. The sliding plate 6024 of the first arc segment 6021 is fixedly connected to the sliding plate 6024 of the second arc segment 6022 to achieve synchronous movement. The sliding plate 6024 of the first arc segment 6021 is misaligned with the card seat 4, so that after the first arc segment 6021 is rotated 180 degrees and inserted into the groove 701, the sliding plate 6024 corresponding to the first arc segment 6021 can rise smoothly.

[0054] Among them, such as Figure 8 As shown, in the initial state, due to the setting of the card holder 4, the slide plate 6024 is compressed in the base 6023. When the support rod 601 rotates 180 degrees, both bases 6023 can be inserted into the groove 701, and the slide plate 6024 can rise under the action of the second spring 6025 and abut against the upper groove wall of the groove 701.

[0055] Furthermore, in order to make the base 6023 adapt to the lower groove wall corresponding to the groove 701 on different workpieces 7, the synchronous rotation of the support rod 601 and the base 6023 on the first arc segment 6021 can be improved from a fixed connection to a key shaft assembly. That is, the base 6023 can not only rotate synchronously with the support rod 601, but also rise and fall along the support rod 601. Due to gravity and the action of the second spring 6025, the base 6023 will be at the lowest position in the initial state based on the support rod 601. At the same time, the bottom of the base 6023 is provided with an arc surface 8. When the arc surface 8 contacts the workpiece 7, the base 6023 can automatically rise along the support rod 601 through the arc surface 8, and at this time, the two bases 6023 can rise synchronously.

[0056] Furthermore, such as Figure 8As shown, the upper side of the opening 401 is also provided with an arc surface 8, which is used to push the sliding plate 6024 to move downwards and retract into the base 6023 when the base 6023 is reset. Thus, the height of the opening 401 along the vertical direction can be effectively reduced, and the height of the opening 401 along the vertical direction is smaller than the height of the groove 701 along the vertical direction. Therefore, when the card holder 4 contacts the workpiece 7, the top or upper side of the workpiece 7 will not be tilted and inserted into the opening 401.

[0057] In use, the workpiece 7 can be effectively supported by inserting the groove 701 through the support rod 601, the cushion block 602, and the card holder 4, thereby ensuring the hole opening effect. The cushion block 602 can be further inserted into the groove 701 through the first arc segment 6021 and the second arc segment 6022, thereby ensuring the hole opening effect and the supporting effect. The working process and effect are the same as those in Embodiment Two, and will not be repeated here. The difference is that when the rack 504 drives the gear 603 to rotate 180 degrees, the two bases 6023 can be synchronously moved. The base 6023 contacts the lower side of the workpiece 7 through the arc surface 8 and then smoothly enters the groove 701. The sliding plate 6024 can be automatically raised relative to the base 6023 through the second spring 6025 after being turned out of the card holder 4. Finally, the base 6023 and the sliding plate 6024 are respectively abutted with the lower groove wall and the upper groove wall of the groove 701, and the base 6023 and the sliding plate 6024 corresponding to the second arc segment 6022 can be deformed and abutted with the rear groove wall of the groove 701.

[0058] Compared with Embodiment Two, the base 6023, the sliding plate 6024, the second spring 6025, and the arc surface 8 are cooperated. In the initial state, the sliding plate 6024 is arranged in a compressed state in the base 6023, which can effectively reduce the opening size of the opening 401 along the vertical direction, thereby ensuring that the arc rear surface of the card holder 4 can be abutted with both sides of the workpiece 7, and further ensuring the contact and limiting effect of the card holder 4 and the workpiece 7.

[0059] Meanwhile, the sliding plate 6024 can be raised along the base 6023 after being turned out of the card holder 4. At this time, the sliding plate 6024 and the base 6023 can be respectively contacted with the upper and lower groove walls of the groove 701, thereby still ensuring the supporting effect of the workpiece 7, and ensuring that the sliding plate 6024 and the base 6023 can be inserted into the groove 701 to provide the supporting effect, thereby being applicable to the groove 701 with different height dimensions along the vertical direction, and further improving the overall applicability.

Claims

1. A hinge drilling device for a vehicle refrigerator, comprising a processing table, a drilling module fixedly mounted on the processing table, and a rear panel, characterized in that, The processing table is provided with a chuck, and the chuck is provided with a support component for supporting the workpiece. The processing table is provided with a drive component for driving the chuck to move and is connected to the support component in a transmission manner. When the drive component is activated, it drives the chuck and the support component to move. When the workpiece abuts against both the chuck and the back stop, the drive component can drive the support component to rotate out of the chuck and insert into the workpiece.

2. The vehicle-mounted refrigerator hinge drilling device according to claim 1, characterized in that, The drive assembly includes a cylinder fixedly mounted on the processing table, a connecting rod fixedly mounted on the output shaft of the cylinder, a first spring fixedly mounted between the connecting rod and the locator, and a rack that is connected to the support assembly for transmission at the end of the connecting rod inserted into the locator.

3. The vehicle-mounted refrigerator hinge drilling device according to claim 2, characterized in that, The rack is made of a flexible material and is U-shaped based on the card holder.

4. The vehicle-mounted refrigerator hinge drilling device according to claim 2, characterized in that, The support assembly includes a support rod rotatably mounted in the mounting bracket and a pad for supporting the workpiece. The support rod and the pad are coaxially driven and can rotate synchronously. A gear connected to a rack is fixedly mounted on the outer surface of the support rod.

5. The vehicle-mounted refrigerator hinge drilling device according to claim 4, characterized in that, The pad is designed in a ring shape; when the rack drives the gear to rotate, the pad can be rotated 180 degrees through the support rod.

6. The vehicle-mounted refrigerator hinge drilling device according to claim 5, characterized in that, The top of the processing table has a through hole, which partially coincides with the rotation trajectory of the pad based on the support rod.

7. The vehicle-mounted refrigerator hinge drilling device according to claim 5, characterized in that, The pad includes a first arc-shaped segment fixedly connected to the support rod and a second arc-shaped segment fixedly connected to the first arc-shaped segment. The second arc-shaped segment is made of a flexible material that can deform.

8. The vehicle-mounted refrigerator hinge drilling device according to claim 7, characterized in that, Both the first and second arc segments include a base, and a sliding plate is elastically connected inside the base via a second spring. The two bases and the two sliding plates are fixedly connected, and the base of the first arc segment is coaxially driven with the support rod and can rotate synchronously.

9. The vehicle-mounted refrigerator hinge drilling device according to claim 8, characterized in that, The base and support rod corresponding to the first arc segment are assembled using a key shaft, and the bottom of the base has an arc surface.

10. The vehicle-mounted refrigerator hinge drilling device according to any one of claims 1-9, characterized in that, The surface of the card holder near the rear guard is arc-shaped, and the surface of the card holder has an opening for the support component to rotate.

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