Sliding door lower hinge assembling device

Abstract

The utility model relates to the technical field of workshop assembling equipment, in particular to a sliding door lower hinge assembling device which comprises a base and a pressing mechanism arranged on the base, and the pressing mechanism is used for pressing a vehicle door leaf of a sliding door lower hinge. The device further comprises a moving mechanism, an alignment table and a position positioning mechanism, the alignment table and the position positioning mechanism are connected with the base through the moving mechanism, the alignment table is provided with an abutting structure used for swing head positioning of the sliding door lower hinge, and the position positioning mechanism is provided with a containing position used for containing a main positioning bolt of the sliding door lower hinge. The tool is convenient to use and can be used for quickly assembling the lower hinge of the sliding door, and the assembling efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of workshop assembly equipment, more particularly to a sliding door lower hinge assembly device. BACKGROUND

[0002] The automobile sliding door system is more and more welcomed by the market because it has the advantages of small space required for opening, good access, large opening degree, convenient loading and unloading, etc., and has good application prospects in the automobile market. The opening and closing functions of the sliding door are realized through the cooperation of the upper hinge, the middle hinge, the lower hinge of the sliding door and the respective tracks. The gap and the step difference between the sliding door and the side wall when the sliding door is closed affect the sealing and the appearance of the sliding door. The gap and the step difference are related to the relative positions of the hinge and the track, so the assembly precision of the hinge has a great influence on the appearance and the opening and closing quality of the sliding door.

[0003] The door leaf of the sliding door lower hinge is used to be connected with the door, and the swing head of the sliding door lower hinge is arranged at the corresponding lower track. The sliding door lower hinge mainly controls the precision of the sliding door in the Z direction and the Y direction. After the assembly of the sliding door is completed, the gap and the step difference of the sliding door are optimized by adjusting the lower track and the sliding door lower hinge. In terms of Z-direction precision adjustment of the sliding door, the relative position between the main positioning bolt used to be connected with the door at the door leaf and the swing head is adjusted and assembled. At present, the adjustment of this part is still through manual adjustment and repair, which is time-consuming and labor-consuming, and the assembly efficiency is difficult to improve. UTILITY MODEL CONTENTS

[0004] The utility model aims at overcoming the low assembly efficiency of the prior art sliding door lower hinge, and provides a sliding door lower hinge assembly device, which is convenient to use, can be used for rapid assembly of the sliding door lower hinge, and improves the assembly efficiency.

[0005] To solve the above technical problems, the utility model adopts the technical scheme of:

[0006] A sliding door lower hinge assembly device is provided, which comprises a base, a pressing mechanism arranged on the base, the pressing mechanism being used to press the door leaf of the sliding door lower hinge, a moving mechanism, a positioning table and a position positioning mechanism, the positioning table and the position positioning mechanism being connected with the base through the moving mechanism, the positioning table being provided with an abutting structure used to position the swing head of the sliding door lower hinge, and the position positioning mechanism being provided with a placement position used to place the main positioning bolt of the sliding door lower hinge.

[0007] The utility model discloses a sliding door lower hinge assembly device, the setting of the compression mechanism can be used for the door leaf of the compression sliding door lower hinge, the setting of the abutting structure makes the alignment table can realize the movement alignment with the swing of the sliding door lower hinge through the moving mechanism, and then makes the position positioning mechanism can move to the corresponding position along with the moving mechanism, and the main positioning bolt can correspond through the position of the placement position of the position positioning mechanism and the installation position of the door leaf, realizes the quick assembly of the sliding door lower hinge, improves the assembly efficiency.

[0008] Preferably, the position positioning mechanism comprises a placement block and a positioning block, the placement position comprises a placement hole arranged on the placement block; the positioning block is connected with the moving end of the moving mechanism, and the placement block is placed on the moving end of the moving mechanism and cooperates with the positioning block.

[0009] Preferably, the placement block is provided with a first positioning surface, the positioning block is provided with a second positioning surface matched with the first positioning surface, and a plurality of gaskets are arranged between the first positioning surface and the second positioning surface.

[0010] Preferably, the abutting structure comprises a first buffer pad for abutting with the load bearing wheel on the swing head, and the first buffer pad is connected with the alignment table.

[0011] Preferably, the abutting structure further comprises an abutting block for abutting with the guide wheel on the swing head, the abutting block is connected with the alignment table, and a second buffer pad is arranged on the abutting block.

[0012] Preferably, the sliding door lower hinge assembly device further comprises a limiting mechanism arranged on the base, and the limiting end of the limiting mechanism faces the moving end of the moving mechanism.

[0013] Preferably, the moving direction of the moving mechanism is parallel to the position adjusting direction of the gasket to the placement block; the moving mechanism comprises a sliding table, a guide rail and a telescopic cylinder, the sliding table is connected with the base through the guide rail, the sliding table is further connected with the base through the telescopic cylinder, and the alignment table is connected with the sliding table.

[0014] Preferably, the moving mechanism further comprises a locking mechanism arranged between the sliding table and the base.

[0015] Preferably, the sliding table is provided with an avoidance gap for avoiding the compression mechanism.

[0016] Preferably, the compression mechanism comprises a base arranged on the base and a compression cylinder, the compression end of the compression cylinder is located above the base, and a plurality of positioning protrusions are arranged on the base.

[0017] Compared with the prior art, the utility model has the advantages of

[0018] 1, the setting of the compression mechanism can be used for the door leaf of the lower hinge of the sliding door, the setting of the abutting structure makes the alignment table can realize the movement alignment with the swing of the lower hinge of the sliding door through the moving mechanism, and then the position positioning mechanism can be moved to the corresponding position along with the moving mechanism, and the main positioning bolt can be corresponded with the installation position on the door leaf through the placement position of the position positioning mechanism, realize the quick assembly of the lower hinge of the sliding door, improve the assembly efficiency;

[0019] 2, the setting of the gasket between the placement block and the positioning block, can be used for the fine adjustment of the installation position of the main positioning bolt on the door leaf, improve the applicability of the lower hinge assembly device of the sliding door;

[0020] 3, the setting of the limiting mechanism, can be used for limiting the movement range of the alignment table, avoid damaging the swing of the lower hinge of the sliding door to the alignment table. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the structure schematic drawing of the first visual angle of the utility model a lower hinge assembly device of sliding door embodiment one;

[0022] Figure 2 It is the structure schematic drawing of the second visual angle of the utility model a lower hinge assembly device of sliding door embodiment one;

[0023] Figure 3 It is the structure schematic drawing of the top view of the utility model a lower hinge assembly device of sliding door embodiment one;

[0024] Figure 4 It is the structure schematic drawing of the utility model position positioning mechanism embodiment one;

[0025] Figure 5 It is the structure schematic drawing of the top view of the utility model a lower hinge assembly device of sliding door embodiment two;

[0026] Figure 6 It is the structure schematic drawing of the utility model position positioning mechanism embodiment two;

[0027] Figure 7 It is the structure schematic drawing of the utility model a lower hinge assembly device of sliding door embodiment three;

[0028] Figure 8 It is the use state diagram of the utility model a lower hinge assembly device of sliding door;

[0029] Figure 9 It is the structure schematic drawing of the utility model lower hinge.

[0030] In the drawings: 100, base; 200, pressing mechanism; 210, base; 211, positioning protrusion; 220, pressing cylinder; 221, pressing head; 300, moving mechanism; 310, sliding table; 311, clearance gap; 312, waist-shaped hole; 320, guide rail; 330, telescopic cylinder; 340, locking mechanism; 341, locking block; 342, locking pin; 400, alignment table; 410, first buffer pad; 420, abutting block; 421, second buffer pad; 500, position positioning mechanism; 510, placing block; 511, placing hole; 512, first positioning surface; 520, positioning block; 530, gasket; 610, first limiter; 620, needle cylinder; 630, second limiter; 700, sliding door lower hinge; 710, door leaf; 711, main positioning waist-shaped hole; 712, positioning hole; 720, connecting piece; 730, swing head; 731, load wheel; 732, guide wheel; 740, connecting bolt; 750, hinge pin; 760, main positioning bolt. DETAILED DESCRIPTION

[0031] The utility model will be further explained in connection with specific embodiment. Among them, the drawings are used for example explanation only, and the representation is only schematic diagram, and can not be understood as the limitation to this patent; in order to better explain the embodiment of the utility model, some components of the drawings will be omitted, enlarged or reduced, and the size of actual product is not represented; for those skilled in the art, some well-known structure and its description in the drawings can be omitted and understood.

[0032] The same or similar reference numerals in the drawings of the embodiments of the utility model correspond to the same or similar components; in the description of the utility model, it is understood that if the orientation or position relationship indicated by the terms "upper", "lower", "left", "right" etc. is based on the orientation or position relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, a particular orientation and operation, therefore the position relationship description term in the drawings is only used for example description, and can not be understood as the limitation to this patent, for the ordinary skilled in the art, the specific meaning of the above terms can be understood according to the specific situation.

[0033] Embodiment one

[0034] As Figures 1 to 4 , Figure 8The first embodiment of the sliding door lower hinge assembling device is shown, comprising a base 100, a pressing mechanism 200 installed on the base 100, the pressing mechanism 200 is used for pressing the door leaf 710 of the sliding door lower hinge 700; further comprising a moving mechanism 300, an alignment table 400, a position positioning mechanism 500, the alignment table 400 and the position positioning mechanism 500 are connected with the base 100 through the moving mechanism 300, the alignment table 400 is provided with an abutting structure for positioning the swing head 730 of the sliding door lower hinge 700, and the position positioning mechanism 500 is provided with a placement position for placing the main positioning bolt 760 of the sliding door lower hinge 700.

[0035] The setting of the pressing mechanism 200 can be used for pressing the door leaf 710 of the sliding door lower hinge 700, the setting of the abutting structure enables the alignment table 400 to realize the movement alignment with the swing head 730 of the sliding door lower hinge 700 through the moving mechanism 300, and then the position positioning mechanism 500 can be moved to the corresponding position through the moving mechanism 300, and the main positioning bolt 760 can be corresponded with the mounting position on the door leaf 710 through the position of the placement position of the position positioning mechanism 500, so that the quick assembly of the sliding door lower hinge 700 is realized, and the assembly efficiency is improved.

[0036] As shown in Figure 8 and Figure 9 The sliding door lower hinge 700 comprises a door leaf 710, a connecting piece 720 and a swing head 730, the connecting piece 720 and the swing head 730 are connected through a hinge pin 750; the swing head 730 is provided with a bearing wheel 731 and two guide wheels 732, and the two guide wheels 732 are located on the two sides of the bearing wheel 731; the door leaf 710 is a L-shaped structure, a first side of the door leaf 710 is connected with the connecting piece 720 through a connecting bolt 740, and a second side of the door leaf 710 is provided with a main positioning waist-shaped hole 711 and a plurality of positioning holes 712, the main positioning waist-shaped hole 711 is connected with the door through a main positioning bolt 760, and the positioning holes 712 are connected with the door through positioning bolts. The specific assembly position of the main positioning bolt 760 on the main positioning waist-shaped hole 711 will affect the gap difference of the sliding door, and affect the sealing and the appearance of the sliding door. The sliding door lower hinge assembling device can be applied to the assembly of the sliding door lower hinge 700.

[0037] As shown in Figures 1 to 4As shown, the position positioning mechanism 500 comprises a placing block 510 and a positioning block 520. The placing block 510 is provided with a placing hole 511. The positioning block 520 is connected to the moving end of the moving mechanism 300. The placing block 510 is placed on the moving end of the moving mechanism 300 and cooperates with the positioning block 520. When the assembling device is used to assemble the lower hinges of different specifications or models, the corresponding placing block 510 can be replaced for assembly. The positioning block 520 connected to the moving mechanism 300 can be used for quick positioning and placing of the placing block 510 on the moving mechanism 300. In the embodiment, the positioning block 520 is a structure with a recess matched with the placing block 510, which can realize the cooperative placing between the placing block 510 and the positioning block 520. It should be noted that the specific position of the positioning block 520 on the moving end of the moving mechanism 300 can be selected and set according to the lower hinges 700 of different specifications or models.

[0038] As shown in Figure 1 and Figure 2 As shown, the abutting structure comprises a first buffer pad 410 for abutting with the load wheel 731. The first buffer pad 410 is connected to the alignment table 400. The abutting structure further comprises an abutting block 420 for abutting with the guide wheel 732 on the swing head 730. The abutting block 420 is connected to the alignment table 400. The abutting block 420 is provided with a second buffer pad 421. The buffer direction of the second buffer pad 421 is perpendicular to the buffer direction of the first buffer pad 410. Specifically, the first buffer pad 410 and the abutting block 420 are located at the top position of the alignment table 400. As a preferred, the alignment table 400 can be provided with a hollow part, which can reduce the weight of the assembling device. As shown in Figures 1 to 3 The pressing mechanism 200 is used to press the second side of the door leaf 710. In the embodiment, the pressing mechanism 200 comprises two bases 210 arranged on the base 100 and two pressing cylinders 220. The pressing ends of the pressing cylinders 220 are located above the bases 210. The bases 210 are provided with a plurality of positioning protrusions 211. The two bases 210 are arranged along the X direction. The two pressing cylinders 220 are arranged at the outer side positions of the two bases 210. The pressing end of the pressing cylinder 220 comprises a pressing head 221 located directly above the base 210. In the embodiment, the positioning protrusions 211 are arranged at the top of the base 210. The positioning protrusions 211 are used to realize the corresponding placing of the lower hinge 700 at the pressing mechanism 200 through the corresponding positioning holes 712. The number of the positioning protrusions 211 is corresponding to the number of the positioning holes 712. It should be noted that the height position of the base 210 can also be adjusted by arranging a pad on the top of the base 210, so that the pressing height position of the pressing mechanism 200 is adapted to the lower hinge 700.

[0039] It should be noted that the assembly device can also control the operation of each mechanism by setting a controller, wherein the controller is in communication connection with the pressing mechanism 200 and the moving mechanism 300, and specifically, the controller is in electrical connection with the pressing cylinder 220. In this embodiment, the controller can be set as a PLC controller.

[0040] The working principle of the sliding door lower hinge assembly device of this embodiment is as follows:

[0041] The positioning hole 712 of the door leaf 710 is placed in correspondence with the positioning protrusion 211 of the base 210, the pressing head 221 of the pressing cylinder 220 is pressed down and the door leaf 710 is pressed tightly, realizing the stable placement of the sliding door lower hinge 700 on the assembly device; then, the first buffer pad 410 of the alignment table 400 is in contact with the load wheel 731 under the action of the moving mechanism 300, indicating that the moving mechanism 300 has been moved to the position, and the position positioning mechanism 500 on the moving mechanism 300 is also located at the corresponding position, at this time, the main positioning bolt 760 is inserted into the main positioning waist-shaped hole 711, and the position of the main positioning bolt 760 in the main positioning waist-shaped hole 711 is also limited due to the position limitation of the placement hole 511, realizing the accurate assembly of the main positioning bolt 760.

[0042] Embodiment two

[0043] This embodiment is a second embodiment of a sliding door lower hinge assembly device, which is similar to embodiment one, except that, as shown in Figures 5 to 6 The placement block 510 is provided with a first positioning face 512, and the positioning block 520 is provided with a second positioning face matched with the first positioning face 512. Specifically, the first positioning face 512 is located at the side of the placement block 510, and when the positioning block 520 is provided with a concave position structure, the second positioning face is arranged at the concave position, which can realize the matched placement between the placement block 510 and the positioning block 520.

[0044] As shown in Figure 5 and Figure 6 The first positioning face 512 and the second positioning face are provided with a plurality of spacers 530, which can be used to adjust the position distance between the placement block 510 and the positioning block 520, and the position adjustment direction of the spacer 530 to the placement block 510 is parallel to the extension direction of the main positioning waist-shaped hole 711 on the door leaf 710, so that the spacer 530 can be used for the fine adjustment of the position of the main positioning bolt 760 in the main positioning waist-shaped hole 711, improving the applicability of the sliding door lower hinge assembly device. Specifically, the main positioning waist-shaped hole 711 is arranged along the Z direction, therefore, the position adjustment direction of the spacer 530 to the placement block 510 is arranged along the Z direction; and the moving direction of the moving mechanism 300 is also parallel to the position adjustment direction of the spacer 530 to the placement block 510, therefore, the moving direction of the moving mechanism 300 is also arranged along the Z direction.

[0045] As shown in Figure 5 and Figure 8 , the moving mechanism 300 includes a sliding table 310, a guide rail 320, a telescopic cylinder 330, the bottom of the sliding table 310 is connected with the base 100 through the guide rail 320; a positioning table 400, a positioning block 520 are connected with the sliding table 310, and a placing block 510 is placed on the sliding table 310. The piston rod of the telescopic cylinder 330 is connected with the edge of the sliding table 310, and the cylinder seat of the telescopic cylinder 330 is fixedly connected with the base 100. It should be noted that the positioning table 400 is arranged in the vertical direction along the Y direction. In order to facilitate the installation and adjustment of the specific position of the positioning block 520 on the sliding table 310, a waist-shaped hole or a plurality of installation holes can be arranged on the corresponding position of the sliding table 310. When the assembly device is provided with a controller, the controller is electrically connected with the telescopic cylinder 330.

[0046] As shown in Figure 5 , the moving mechanism 300 further includes a locking mechanism 340 arranged between the sliding table 310 and the base 100, which can be used to lock the sliding table 310 on the base 100. In the embodiment, the locking mechanism 340 includes a locking block 341 and a locking pin 342, the locking block 341 is connected with the base 100, the sliding table 310 is provided with a waist-shaped hole 312, and the locking pin 342 is connected with the locking block 341 after passing through the waist-shaped hole 312.

[0047] As shown in Figure 5 , in order to adapt the pressing position of the two pressing cylinders 220 to the lower hinge 700 of the sliding door, the sliding table 310 is provided with an empty gap 311 for avoiding empty space, one of the pressing cylinders 220 is located in the empty gap 311, and the base 210 corresponding to the pressing cylinder 220 is a gantry-shaped gantry, one end of the gantry is located in the empty gap 311; in addition to the fact that the setting of the gantry can adapt the pressing position of the pressing mechanism 200 to the lower hinge 700 of the sliding door, it can also avoid the pressing mechanism 200 from hindering the sliding of the sliding table 310. It should be noted that, in order to avoid the interference caused by the setting of the gantry to the position positioning mechanism 500, the side of the gantry is provided with an empty space.

[0048] The working principle of the sliding door lower hinge assembly device of the embodiment is as follows:

[0049] The door leaf 710 is compressed by the compression mechanism 200, then the telescopic cylinder 330 drives the sliding table 310 to move along the guide rail 320 until the first buffer pad 410 of the positioning table 400 on the sliding table 310 is in contact with the load wheel 731, indicating that the sliding table 310 has been moved to the position, and the position positioning mechanism 500 on the sliding table 310 is also in the corresponding position. At this time, the main positioning bolt 760 is inserted into the main positioning waist-shaped hole 711, and the position of the main positioning bolt 760 in the main positioning waist-shaped hole 711 is limited due to the position limitation of the placement hole 511, so that the accurate assembly of the main positioning bolt 760 is realized. When the gap difference of the sliding door needs to be adjusted, that is, when the relative position of the load wheel 731 and the main positioning bolt 760 in the Z direction needs to be adjusted, the appropriate number and thickness of the gasket 530 can be placed between the placement block 510 and the positioning block 520 to realize the fine adjustment of the position of the placement block 510 relative to the positioning block 520, as shown in Figure 5 and Figure 6 .

[0050] Example Three

[0051] This embodiment is a third embodiment of a sliding door lower hinge assembly device, which is similar to the first or second embodiment, except that, as shown in Figures 7 to 8 , the sliding door lower hinge assembly device further comprises a limiting mechanism arranged on the base 100, and the limiting end of the limiting mechanism faces the moving end of the moving mechanism 300. The limiting mechanism can be used to limit the movement range of the positioning table 400, so as to avoid damaging the swing head 730 of the sliding door lower hinge 700 by the positioning table 400.

[0052] In this embodiment, the limiting mechanism comprises a first limiter 610 arranged on the base 100, and the limiting end of the first limiter 610 faces the sliding table 310, and the first limiter 610 is used to limit the movement of the positioning table 400 in the direction close to the swing head 730. In order to further improve the limiting effect, the limiting mechanism further comprises a needle type cylinder 620, and the limiting end of the needle type cylinder 620 also faces the sliding table 310, and is also used to limit the movement of the positioning table 400 in the direction close to the swing head 730.

[0053] In order to avoid the sliding table 310 from slipping off, the limiting mechanism further comprises a second limiter 630, and the limiting end of the second limiter 630 faces the sliding table 310, and the second limiter 630 is used to limit the movement of the positioning table 400 in the direction away from the swing head 730.

[0054] The working principle of the sliding door lower hinge assembly device of this embodiment is as follows:

[0055] The telescopic air cylinder 330 drives the sliding table 310 to move along the guide rail 320 until the sliding table 310 is in contact with the first limiter 610 and the needle type air cylinder 620 to realize limiting, and at this time, the first buffer pad 410 is also in contact with the load wheel 731, and the sliding table 310 is moved to the position.

[0056] In the specific contents of the foregoing specific embodiments, each technical feature can be combined arbitrarily without contradiction, and in order to make the description simple, all possible combinations of the foregoing technical features are not described, however, as long as the combination of the technical features does not exist contradiction, it should be considered as the scope of the present application.

[0057] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and impossible to enumerate all the embodiments. Any modification, equivalent replacement and improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A sliding door lower hinge assembly, characterized by, The application relates to a sliding door lower hinge pressing device, which comprises a base (100), a pressing mechanism (200) arranged on the base (100) and used for pressing a door leaf (710) of a sliding door lower hinge (700), a moving mechanism (300), a positioning table (400) and a position positioning mechanism (500), wherein the positioning table (400) and the position positioning mechanism (500) are connected with the base (100) through the moving mechanism (300), the positioning table (400) is provided with an abutting structure used for positioning a swing head (730) of the sliding door lower hinge (700), and the position positioning mechanism (500) is provided with a placement position used for placing a main positioning bolt (760) of the sliding door lower hinge (700).

2. The sliding door lower hinge assembly of claim 1, wherein, The position positioning mechanism (500) comprises a placement block (510) and a positioning block (520), the placement position comprises a placement hole (511) arranged on the placement block (510), the positioning block (520) is connected with a moving end of the moving mechanism (300), and the placement block (510) is arranged on the moving end of the moving mechanism (300) and matched with the positioning block (520).

3. The sliding door lower hinge assembly of claim 2, wherein, The placement block (510) is provided with a first positioning surface (512), the positioning block (520) is provided with a second positioning surface matched with the first positioning surface (512), and a plurality of gaskets (530) are arranged between the first positioning surface (512) and the second positioning surface.

4. The sliding door lower hinge assembly of claim 1, wherein, The abutting structure comprises a first buffer pad (410) used for abutting with a load bearing wheel (731) on the swing head (730), and the first buffer pad (410) is connected with the positioning table (400).

5. The sliding door lower hinge assembly of claim 4, wherein, The abutting structure further comprises an abutting block (420) used for abutting with a guide wheel (732) on the swing head (730), the abutting block (420) is connected with the positioning table (400), and the abutting block (420) is provided with a second buffer pad (421).

6. The sliding door lower hinge assembly of any one of claims 1 to 5, wherein, The application further comprises a limiting mechanism arranged on the base (100), and a limiting end of the limiting mechanism faces a moving end of the moving mechanism (300).

7. The sliding door lower hinge assembly of claim 3, wherein, The moving direction of the moving mechanism (300) is parallel to the position adjusting direction of the gaskets (530) to the placement block (510), the moving mechanism (300) comprises a sliding table (310), a guide rail (320) and a telescopic air cylinder (330), the sliding table (310) is connected with the base (100) through the guide rail (320), the sliding table (310) is further connected with the base (100) through the telescopic air cylinder (330), and the positioning table (400) is connected with the sliding table (310).

8. The sliding door lower hinge assembly of claim 7, wherein, The moving mechanism (300) further comprises a locking mechanism (340) arranged between the sliding table (310) and the base (100).

9. The sliding door lower hinge assembly of claim 7, wherein, The sliding table (310) is provided with an avoidance gap (311) used for avoiding the pressing mechanism (200).

10. The sliding door lower hinge assembly of claim 1, wherein, The pressing mechanism (200) comprises a base (210) and a pressing cylinder (220), the pressing end of the pressing cylinder (220) is located above the base (210), and the base (210) is provided with a plurality of positioning protrusions (211).

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