A sliding door lock system

Abstract

The application discloses a sliding door lock system and relates to the technical field of sliding door lock arrangement. The sliding door lock system comprises an outer opening assembly, an inner opening assembly and a lock body. The outer opening assembly comprises a base, an outer opening handle arranged on one side of the base, a pin shaft arranged in the base, a first torsion spring arranged on the pin shaft and an outer opening rotating arm arranged on one side of the base. The inner opening assembly comprises an inner opening bottom plate, an inner opening rotating arm arranged on one side of the inner opening bottom plate, a rotating shaft arranged in the inner opening bottom plate and an inner opening handle arranged on one side of the rotating shaft. The application has the beneficial effect of omitting the conversion link of the inner opening device and directly controlling the lock body by the inner and outer opening handles. In order to realize the function, the outer opening handle assembly is improved to connect two cables to synchronously control the unlocking functions of the two lock bodies. A newly developed inner opening handle assembly is composed of a handle, a rotating shaft, a bottom plate, a rotating arm and other components and connects two cables to control the unlocking functions of the two lock bodies.

Description

Technical Field

[0001] This invention relates to the field of sliding door lock arrangement technology, and in particular to a sliding door lock system. Background Technology

[0002] Existing automotive sliding door lock systems are cumbersome in structure, with complex conversion mechanisms, high technical difficulty, cumbersome lever linkage steps, numerous parts, poor sound quality, and unsatisfactory door opening and closing feel, resulting in a poor customer experience. The inward opening mechanism has large and heavy parts, which hinders vehicle lightweighting, increases overall vehicle cost and energy consumption, and also contributes to a poor user experience. In particular, the large Y-axis space requirements and high handle height affect the interior space of the door and the overall vehicle layout. Summary of the Invention

[0003] In this section, as well as in the abstract and title of this application, some simplifications or omissions may be made to avoid obscuring the purpose of this section, the abstract, and the title of this application, and such simplifications or omissions shall not be used to limit the scope of the invention.

[0004] In view of the problems existing in the above or prior art, the present invention is proposed.

[0005] Therefore, the purpose of this invention is to provide a sliding door lock system that can solve a number of technical problems: the inward opening device has a complex mechanism, occupies a large space, and is not conducive to the assembly and arrangement of parts; the inward and outward opening handles are connected to the lock body through the inward opening device, and the transmission requires multiple levers, resulting in a long transmission chain and many failures; the lever mechanism of the inward opening device is complex, with many swing arms and poor structural rigidity; the transmission of operating force requires conversion through multiple levers on the inward opening device, resulting in large stroke loss; the inward opening device is arranged on the inner panel of the door, and its matching surface is complex, which has a significant impact on the waterproof performance of the door; the connection between the inward opening handle and the inward opening device requires a large space in the Y direction, which is not easy to meet the requirements of the inward protrusion regulations; the operating force of the inward opening handle is transmitted to the lock body through multiple levers on the inward opening device, resulting in a large operating force; the operating force of the outward opening handle is transmitted to the lock body through multiple levers on the inward opening device, resulting in a large operating force; the lever mechanism on the inward opening device is complex, with many limiting mechanisms, resulting in poor sound quality during operation.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a sliding door lock system, which includes an outward opening assembly, including a base, an outward opening handle disposed on one side of the base, a pin disposed through the interior of the base, a first torsion spring disposed on the shaft of the pin, and an outward opening rotating arm disposed on one side of the base;

[0007] The inward-opening assembly includes an inward-opening base plate, an inward-opening rotating arm disposed on one side of the inward-opening base plate, a rotating shaft disposed inside the inward-opening base plate, and an inward-opening handle disposed on one side of the rotating shaft.

[0008] As a preferred embodiment of the sliding door lock system of the present invention, the limiting lock includes a base plate, a pair of pins disposed through the surface of the base plate, a ratchet disposed on the surface of the base plate, a pawl disposed on one side of the ratchet, a second torsion spring disposed on the outer wall of the pins, a pair of limiting rotating arms disposed on one side of the pawl, and a cover plate disposed above the pawl.

[0009] As a preferred embodiment of the sliding door lock system of the present invention, the base includes a pin seat disposed therein, a pair of limiting pieces disposed above the pin seat, and a first cable seat disposed on one side of the pin seat.

[0010] The outward-opening handle includes a traction bar disposed on one side thereon, and a traction port disposed on one side of the traction bar;

[0011] The outward-opening swing arm includes a traction column disposed on one side, a pair of locking arms disposed at the bottom of the traction column, and a first lock hole that penetrates the surface of the locking arms.

[0012] As a preferred embodiment of the sliding door lock system of the present invention, the inner opening base plate includes a pivot hole disposed on its surface and a pair of second cable seats disposed on one side of the inner opening base plate;

[0013] The inner-opening rotating arm includes a pair of waist-shaped holes and a limiting hole disposed on its surface;

[0014] The rotating shaft includes a ratchet tooth at one end and a pair of limiting grooves at the other end of the rotating shaft.

[0015] As a preferred embodiment of the sliding door lock system of the present invention, the base plate includes a first stop and a second stop disposed on its surface, and a third cable seat disposed on one side of the first stop.

[0016] As a preferred embodiment of the sliding door lock system of the present invention, the ratchet includes an engagement hole disposed on one side thereon and a locking block disposed on the other side of the ratchet.

[0017] As a preferred embodiment of the sliding door lock system of the present invention, the pawl includes a first latch disposed on one side thereon, and a blocking strip disposed on the side wall of the pawl.

[0018] As a preferred embodiment of the sliding door lock system of the present invention, the limiting arm includes a second latch disposed on one side thereon, and a second lock hole that penetrates the surface of the limiting arm.

[0019] As a preferred embodiment of the sliding door lock system of the present invention, it further includes a sliding latch, which includes a metal ring disposed on one side thereof.

[0020] As a preferred embodiment of the sliding door lock system of the present invention, it further includes four cables.

[0021] The beneficial effects of this invention are as follows: This invention omits the step of switching between internal and external opening mechanisms, allowing the lock body to be directly controlled by the internal and external opening handles. To achieve this function, the external opening handle assembly has been improved, now connecting two cables to simultaneously control the unlocking function of the two lock bodies; a new internal opening handle assembly has been developed, consisting of several major components such as a handle, rotating shaft, base plate, and rotating arm, connecting two cables to control the unlocking function of the two lock bodies respectively. Through these improvements, the internal and external opening handles replace the function of the internal opening mechanism, simplifying the path from the operating end to the execution end.

[0022] It can reduce the opening force of the outward-opening handle and improve the sensing quality; it can also reduce the opening force of the inward-opening handle and improve the sensing quality; there is no limitation on the mounting surface of the inward-opening device, which is beneficial for waterproofing the inner door panel; eliminating the inward-opening device can effectively improve the quality of the unlocking sound; the inward and outward-opening handles are directly connected to the lock body, with fewer transmission links and higher transmission efficiency; eliminating the inward-opening device is beneficial for the arrangement of parts assembly; the structure is simple, the assembly is simple, and the loading cycle is shortened; eliminating the inward-opening device greatly reduces the cost of parts. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0024] Figure 1 This is a schematic diagram of the overall sliding door lock system.

[0025] Figure 2 This is a supplementary schematic diagram for the overall sliding door lock system.

[0026] Figure 3 This is a structural diagram of the outward-opening assembly of a sliding door lock system.

[0027] Figure 4 This is an exploded view of the outward-opening assembly of a sliding door lock system.

[0028] Figure 5 This is a structural diagram of the inner opening assembly of a sliding door lock system.

[0029] Figure 6 This is an exploded view of the inner opening assembly of the sliding door lock system.

[0030] Figure 7 This is a structural diagram of the limit lock for a sliding door lock system.

[0031] Figure 8 This is an exploded view of the limit lock of a sliding door lock system.

[0032] Figure 9 This is a comparison diagram of existing sliding door lock systems. Detailed Implementation

[0033] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0034] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0035] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is mutually exclusive, either alone or selectively, with other embodiments.

[0036] Example 1

[0037] Reference Figures 1-9 This is the first embodiment of the present invention. This embodiment provides a sliding door lock system, which includes an outward opening assembly 100, including a base 101, an outward opening handle 102 disposed on one side of the base 101, a pin 103 disposed through the interior of the base 101, a first torsion spring 104 disposed on the shaft of the pin 103, and an outward opening rotating arm 105 disposed on one side of the base 101; and an inward opening assembly 200, including an inward opening base plate 201, an inward opening rotating arm 202 disposed on one side of the inward opening base plate 201, a rotating shaft 203 disposed inside the inward opening base plate 201, and an inward opening handle 204 disposed on one side of the rotating shaft 203.

[0038] Furthermore, the limit lock 300 includes a base plate 301, a pair of pins 302 disposed through the surface of the base plate 301, a ratchet 303 disposed on the surface of the base plate 301, a pawl 304 disposed on one side of the ratchet 303, a second torsion spring 305 disposed on the outer wall of the pins 302, a pair of limit rotating arms 306 disposed on one side of the pawl 304, and a cover plate 307 disposed above the pawl 304.

[0039] Furthermore, the base 101 includes a pin seat 101a disposed therein, a pair of limiting pieces 101b disposed above the pin seat 101a, and a first cable seat 101c disposed on one side of the pin seat 101a; the outward-opening handle 102 includes a traction bar 102a disposed on one side of the handle, and a traction port 102b disposed on one side of the traction bar 102a; the outward-opening rotating arm 105 includes a traction post 105a disposed on one side of the arm, a pair of locking arms 105b disposed at the bottom of the traction post 105a, and a first lock hole 105c that penetrates the surface of the locking arms 105b.

[0040] Furthermore, the inwardly opening base plate 201 includes a pivot hole 201a disposed on its surface, and a pair of second cable seats 201b disposed on one side of the inwardly opening base plate 201; the inwardly opening rotating arm 202 includes a pair of oblong holes 202a and a limiting hole 202b disposed on its surface; the rotating shaft 203 includes a ratchet 203a disposed at its end, and a pair of limiting grooves 203b disposed at the other end of the rotating shaft 203.

[0041] Furthermore, the seat plate 301 includes a first stop 301a and a second stop 301b disposed on its surface, and a third cable seat 301c disposed on one side of the first stop 301a.

[0042] Furthermore, the ratchet 303 includes an engagement hole 303a disposed on one side thereon, and a locking block 303b disposed on the other side of the ratchet 303.

[0043] Furthermore, the pawl 304 includes a first latch 304a disposed on one side thereon, and a blocking strip 304b disposed on the side wall of the pawl 304.

[0044] Furthermore, the limiting arm 306 includes a second latch 306a disposed on one side thereon, and a second lock hole 306b that penetrates the surface of the limiting arm 306.

[0045] Furthermore, it also includes a sliding latch 400 disposed on one side of the limit lock 300, the sliding latch 400 including a metal ring 401 disposed on one side thereof.

[0046] Furthermore, it also includes four cables M;

[0047] One of the cables M is fixedly connected to the limit lock 300 and the outward opening assembly 100 respectively; one of the cables M is fixedly connected to the limit lock 300 and the inward opening assembly 200 respectively; one end of one cable M is fixedly connected to the outward opening assembly 100; and one end of one cable M is fixedly connected to the inward opening assembly 200.

[0048] It should be noted that, referring to Figure 9The existing sliding door lock system uses a common single-cable design. When the outward-opening handle and inward-opening handle respectively open the main lock and limit lock, a switching mechanism is required via the inward-opening mechanism. This directly leads to a bulky door lock system structure, complex switching mechanisms, high technical difficulty, cumbersome lever linkage steps, numerous parts, poor sound quality, low door opening / closing perception, and a poor customer experience. Furthermore, both the outward-opening and inward-opening handles are directly connected to the inward-opening mechanism, which has large and heavy components, hindering vehicle weight reduction, increasing overall vehicle cost and energy consumption, and further compromising user experience. In particular, the large Y-axis space requirement and the 65mm handle height affect the interior space of the door and the overall vehicle layout.

[0049] Preferably, the base 101 and the outward-opening handle 102 are hinged for opening the limit lock 300 and the main lock N. Those skilled in the art should understand the assembly relationship between the base 101 and the outward-opening handle 102. To illustrate the internal mechanism of the base 101, [details omitted]. Figure 3 and Figure 4 All views are cross-sectional views. Inside the base 101, at a lower position, there is a horizontally protruding pin seat 101a. The pin seat 101a has a through hole. Directly above the pin seat 101a, on the upper surface of the base 101, there is also a through hole. The two holes are used for the installation of the pin shaft 103. The shaft of the pin shaft 103 is equipped with an outwardly opening rotating arm 105 and a first torsion spring 104. The first torsion spring 104 is used to reset the outwardly opening rotating arm 105 after it is pulled by the outwardly opening handle 102. In addition, two parallel limiting plates 101b are provided above the pin seat 101a to accommodate and wrap the traction bar 102a, and to ensure that the traction port 102b is not easily slipped after engaging the traction post 105a. When the outward-opening handle 102 is opened, the traction bar 102a will pull the entire outward-opening rotating arm 105 to rotate. Since the round ends of the two cables M can engage inside the first lock hole 105c, the two cables M are pulled synchronously during the rotation of the rotating arm 105. The two cables M can be fixed by the first cable seat 101c to ensure the normal operation of the cables M. The two cables M here control the limit lock 300 and the main lock N respectively.

[0050] Preferably, after the inner opening device is removed, in order to enable the outer opening handle 102 to control two locks at the same time, the lock arm 105b is designed as a double cable type. When the outer opening handle 102 is working, it can control the main lock N and the limit lock 300 at the same time.

[0051] Preferably, the locking arm 105b and the traction column 105a are both located a short distance away from the rotation center of the outward-opening swing arm 105, providing them with greater torque.

[0052] Preferably, the outward opening assembly 100 and the inward opening assembly 200 in this solution can be installed separately without the need for integration through the inward opening device, which fully provides the free layout of the outward opening assembly 100 and the inward opening assembly 200 on the door panel, and the cable M structure is not limited by the arrangement space.

[0053] Preferred, such as Figure 3 , Figure 6 ,and Figure 8 As shown, cable M has three types of heads, all of which are existing technologies.

[0054] Preferably, the inner opening handle 204, the inner opening base plate 201, and the inner opening rotating arm 202 are connected sequentially by a rotating shaft 203. The ratchet 203a at the end of the rotating shaft 203 is directly inserted into the rotation center of the inner opening handle 204, and the two are fixedly connected. A pair of limiting grooves 203b are provided at the other end of the rotating shaft 203, making the other end of the rotating shaft 203 waist-shaped, which is directly inserted into the waist-shaped limiting hole 202b to form a relative fixed connection. The waist-shaped limiting hole 202b can adjust the corresponding position of the inner opening handle 204 according to the lock body stroke [the movement distance of the cable M]. Therefore, when the inner opening handle 204 rotates, it can drive the inner opening rotating arm 202 to rotate as well. The shaft body of the rotating shaft 203 passes directly through the rotating shaft hole 201a. Two vertically distributed second cable seats 201b are provided on the side of the inward-opening base plate 201 for installing two additional cables M. Furthermore, the two second cable seats 201b have a height difference to ensure a difference in the travel height of the two cables M, facilitating assembly without interference. To ensure that the clockwise or counterclockwise rotation of the inward-opening handle 204 does not affect the cable M in the other direction, achieving the purpose of controlling the main lock N and the limit lock 300 minutes in a time-limited manner, the connection between the inward-opening rotating arm 204 and the cables M adopts a design that embeds the two cables into the oblong hole 202a. This design ensures connection while also providing a certain amount of movement allowance for the head of the cables M. That is, when the inward-opening handle 204 controls the main lock N, the other cable M will be in a free state, thus preventing the other cable M from retracting and causing unnecessary damage. The reverse is also true. To avoid interference from the arrangement of the cable M, the inner swing arm 202 is designed as a two-stage stepped structure. At each step, there are two waist-shaped holes 202a that correspond to the two second cable seats 201b and are vertically distributed for installing the lock head of the cable M.

[0055] Preferably, the inward-opening handle 204 can rotate in both directions, i.e., clockwise or counterclockwise. It should be noted that, not shown in the attached drawings, a torsion spring is also fitted at the pivot 203, with one end fixed to the inward-opening base plate 201 and the other end fixed to the pivot 203, ensuring that the inward-opening handle 204 returns to its original position after rotation, which should be understood by those skilled in the art.

[0056] Preferably, the two cables M on the outward-opening assembly 100 are arranged laterally, which is beneficial to the space requirements of the outward-opening assembly 100 and meets the requirements of the cables M for the turning radius.

[0057] Preferably, the two cables M on the inner opening assembly 200 are arranged laterally and longitudinally, which is beneficial to the space requirements of the inner opening assembly 200 and meets the requirements of the cables for the turning radius.

[0058] Preferably, the function of the limit lock 300 is to lock the door in its fully opened position when it is fully open, preventing the door from closing automatically. It is used in combination with the sliding lock latch 400 on the door.

[0059] Preferably, the seat plate 301 is the carrier of the limit lock 300. One of the pins 302 fixes the ratchet 303 to one side of the surface of the seat plate 301. The ratchet 303 can rotate with the pin 302 as the rotation center. In addition, a second torsion spring 305 is also sleeved on the pin 302. One end of the second torsion spring 305 can lock one side of the ratchet 303, and the other end is blocked by the second stop 301b, so that the ratchet 303 can maintain the current position and stabilize its posture, and can also play a reset role. Another pin 302 simultaneously secures two limiting arms 306 and pawls 304 sequentially from top to bottom. The two limiting arms 306 and pawls 304 can rotate around this pin 302. It should be noted that the uppermost limiting arm 306 is shorter than the lower one. A second torsion spring 305 is fitted onto this pin 302, with one end held abutted by a second stop block 301b and the other end held by a blocking strip 304b. This ensures that the first latch 304a engages with the stop block 303b, allowing the pawls 304 to limit and reset the ratchet 303. Furthermore, the second latches 306a on the two stacked limiting arms 306 simultaneously engage with the blocking strip 304b, ensuring that pulling any one of the limiting arms 306 forces the pawls 304 to open, thus unlocking the limiting lock 300.

[0060] Preferably, to meet the time-sharing control of the limit lock 300 by the outward-opening handle 102 and the inward-opening handle 204, and to ensure that the two do not affect each other during control, two limit rotating arms 306 are designed. The two limit rotating arms 306 work independently. When one limit rotating arm 306 is driven by the pawl 304, the other limit rotating arm 306 is in a free state and will not move, reducing damage to the other cable M, avoiding invalid operation, and improving service life. In addition, it can also reduce the operating force of the inward-opening handle 204.

[0061] Preferably, the third cable holder 301c is segmented to accommodate the stacked distribution of the limiting swing arms 306, and can be used to fix two cables M. The engaging hole 303a on one side of the ratchet 303 can be used for the engagement of the metal ring 401. When the metal ring 401 falls into the engaging hole 303a, the door is locked, and after the ratchet 303 is released from the constraint of the pawl 304, the door can slide freely. The surfaces of the two limiting swing arms 306 each correspond to a second locking hole 306b, used to fix the head of the cable M.

[0062] Preferably, since the inner opening device is removed, the original child lock, emergency lock, door contact signal switch and central control functions need to be transferred to other locations or parts. Therefore, the child lock, emergency lock, door contact signal switch and central control functions need to be integrated into the main lock N lock body. The main lock N is located behind the entire vehicle door, which is convenient to operate and can effectively avoid accidental triggering.

[0063] During use, when the car door is closed, the outward handle 102 opens, the main lock N and the limit lock 300 are unlocked, and the car door can be opened; when the car door is open, the outward handle 102 opens, the limit lock 300 and the main lock N are unlocked, and the car door can be closed.

[0064] When the door is closed, the inward-opening rotary arm 202 rotates, unlocking only the main lock N, and the door can be opened; when the door is open, the inward-opening rotary arm 202 rotates in the opposite direction, unlocking only the limit lock 300, and the door can be closed.

[0065] In summary, this design reduces the number of sub-assemblies in the sliding door lock system: the original internal opening device, internal opening handle, main door lock, and limit lock are simplified to: internal opening handle, main door lock, and limit lock, thus redistributing the overall functions of the sliding door lock system; the internal and external opening handles are directly connected to the two lock bodies via a cable, and the cable structure is not limited by the layout space.

[0066] Furthermore, this design omits the inward opening mechanism conversion step, allowing the lock body to be directly controlled by the inward and outward opening handles. To achieve this function, the outward opening handle assembly was improved, now connecting two cables to simultaneously control the unlocking function of both lock bodies; a new inward opening handle assembly was developed, consisting of several major components such as a handle, rotating shaft, base plate, and rotating arm, connecting two cables to control the unlocking function of each lock body separately. Through these improvements, the inward and outward opening handles replace the function of the inward opening mechanism, simplifying the path from the operating end to the execution end.

[0067] It can reduce the opening force of the outward-opening handle and improve the sensing quality; it can also reduce the opening force of the inward-opening handle and improve the sensing quality; there is no limitation on the mounting surface of the inward-opening device, which is beneficial for waterproofing the inner door panel; eliminating the inward-opening device can effectively improve the quality of the unlocking sound; the inward and outward-opening handles are directly connected to the lock body, with fewer transmission links and higher transmission efficiency; eliminating the inward-opening device is beneficial for the arrangement of parts assembly; the structure is simple, the assembly is simple, and the loading cycle is shortened; eliminating the inward-opening device greatly reduces the cost of parts.

[0068] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0069] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0070] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine task in design, manufacturing, and production without requiring extensive experimentation.

[0071] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A sliding door lock system, characterized in that: include, The outward opening assembly (100) includes a base (101), an outward opening handle (102) disposed on one side of the base (101), a pin (103) that passes through the interior of the base (101), a first torsion spring (104) disposed on the shaft of the pin (103), and an outward opening rotating arm (105) disposed on one side of the base (101). The inward opening assembly (200) includes an inward opening base plate (201), an inward opening rotating arm (202) disposed on one side of the inward opening base plate (201), a rotating shaft (203) disposed inside the inward opening base plate (201), and an inward opening handle (204) disposed on one side of the rotating shaft (203); the outward opening assembly (100) is disposed on one side of the inward opening assembly (200); It also includes a limit lock (300) and four cables (M); the cables (M) are of a standard type; one of the cables (M) is fixedly connected to the limit lock (300) and the outward opening assembly (100); one of the cables (M) is fixedly connected to the limit lock (300) and the inward opening assembly (200); one end of one of the cables (M) is fixedly connected to the outward opening assembly (100); and one end of one of the cables (M) is fixedly connected to the inward opening assembly (200).

2. The sliding door lock system as described in claim 1, characterized in that: The limiting lock (300) includes a base plate (301), a pair of pins (302) through the surface of the base plate (301), a ratchet (303) on the surface of the base plate (301), a pawl (304) on one side of the ratchet (303), a second torsion spring (305) on the outer wall of the pins (302), a pair of limiting rotating arms (306) on one side of the pawl (304), and a cover plate (307) above the pawl (304). The limit lock (300) is located below the outward opening assembly (100) and the inward opening assembly (200).

3. The sliding door lock system as described in claim 2, characterized in that: The base (101) includes a pin seat (101a) disposed therein, a pair of limiting pieces (101b) disposed above the pin seat (101a), and a first cable seat (101c) disposed on one side of the pin seat (101a). The outward-opening handle (102) includes a traction bar (102a) disposed on one side thereon, and a traction port (102b) disposed on one side of the traction bar (102a). The outward-opening swing arm (105) includes a traction column (105a) disposed on one side thereon, a pair of locking arms (105b) disposed at the bottom of the traction column (105a), and a first lock hole (105c) that penetrates the surface of the locking arms (105b).

4. The sliding door lock system as described in claim 3, characterized in that: The inner opening base plate (201) includes a pivot hole (201a) disposed on its surface, and a pair of second cable seats (201b) disposed on one side of the inner opening base plate (201). The inner-opening rotating arm (202) includes a pair of oblong holes (202a) and a limiting hole (202b) disposed on its surface. The rotating shaft (203) includes a ratchet (203a) at one end and a pair of limiting grooves (203b) at the other end of the rotating shaft (203).

5. The sliding door lock system as described in claim 4, characterized in that: The seat plate (301) includes a first stop (301a) and a second stop (301b) disposed on its surface, and a third cable seat (301c) disposed on one side of the first stop (301a).

6. The sliding door lock system as described in claim 5, characterized in that: The ratchet (303) includes a locking hole (303a) on one side and a locking block (303b) on the other side of the ratchet (303).

7. The sliding door lock system as described in claim 6, characterized in that: The pawl (304) includes a first latch (304a) disposed on one side thereon, and a blocking strip (304b) disposed on the side wall of the pawl (304).

8. The sliding door lock system as described in claim 7, characterized in that: The limiting arm (306) includes a second latch (306a) disposed on one side thereon, and a second lock hole (306b) that penetrates the surface of the limiting arm (306).

9. The sliding door lock system as described in claim 8, characterized in that: It also includes a sliding latch (400) disposed on one side of the limit lock (300), the sliding latch (400) including a metal ring (401) disposed on one side thereof.

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