A fastener, slide rail structure and drawer

Abstract

The utility model relates to drawer's sliding structure technical field more specifically, relate to a fastener and slide rail structure and drawer, wherein the fastener includes the main part, and two guide grooves are established in parallel on the main part, and first limit piece is established between two guide grooves still, still including second limit piece and connecting piece, the second limit piece protrudes the main part end part setting, the connecting piece both ends are connected with second limit piece and main part respectively, and form two place limits in the both ends of connecting piece, form accommodating space between two place limits, second limit piece with connecting piece all are located between two guide grooves or between the extension line of two guide grooves, second limit piece and connecting piece all are flexible material, the utility model can overcome the problem that the drawer of prior art is not convenient to install, has promoted the convenience when installing, has improved installation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of drawer sliding structure technology, and more specifically, to a fastener and slide rail structure and a drawer. Background Technology

[0002] The drawer slide structure is key to smooth opening and closing, and its design directly affects the user experience and load-bearing capacity. Common drawer slide structures include two-section and three-section slides. Compared to two-section slides, three-section slides offer superior load-bearing capacity and a higher extension rate when pulled out. Three-section slides, also known as ball bearing slides, consist of an outer rail fixed to the cabinet body, a middle rail, and an inner rail fixed to the drawer side panel. The middle rail serves as the transition between the outer and inner rails, typically incorporating ball bearings via a transition piece. This involves embedding multiple rows of high-precision steel balls (approximately 20-30 balls per rail) between the rails to reduce friction. For ease of installation, a separation mechanism is usually included, using a latch at the end of the middle rail to facilitate drawer disassembly.

[0003] In existing technology, when installing a drawer, the inner rail and the transition piece need to be aligned before connecting them to achieve a sliding connection between the inner rail and the middle rail. To prevent the transition piece from slipping off the middle rail, anti-slip limiters are set at both ends of the middle rail. However, since the transition piece needs to slide with the middle rail, it is not fixed at the limiters. Therefore, when aligning the inner rail and the transition piece during drawer installation, even a slight movement of the inner rail will cause the transition piece and the middle rail to slide relative to each other. At this point, the transition piece must be moved back to the end of the middle rail to re-align the inner rail and the transition piece, which increases the difficulty of connecting the inner rail and the transition piece and brings inconvenience to the installation. Utility Model Content

[0004] The purpose of this utility model is to overcome the problem of inconvenient drawer installation in the prior art, and to provide a fastener and slide rail structure and drawer, which can temporarily fix the transition piece to the end of the middle rail, so as to ensure that there is no relative movement between the transition piece and the middle rail when the inner rail and the transition piece are aligned. After the inner rail and the transition piece are connected, a slight push on the inner rail can cause the transition piece and the middle rail to slide relative to each other, thereby improving the convenience of installation and improving the installation efficiency.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A fastener includes a main body with two parallel guide grooves on the main body and a first limiting member between the two guide grooves; it also includes a second limiting member and a connecting piece, the second limiting member protruding from the end of the main body, the connecting piece being connected at both ends to the second limiting member and the main body respectively, forming two limiting points at both ends of the connecting piece, and forming an accommodating space between the two limiting points; both the second limiting member and the connecting piece are located between the two guide grooves or between the extension lines of the two guide grooves, and both the second limiting member and the connecting piece are made of flexible material.

[0007] The fastener of this invention serves as a limiting element in a slide rail structure, which can be used in drawers. The fastener is installed on the middle rail of the slide rail structure to limit the transition piece that slides along the middle rail, ensuring that the relative position of the transition piece and the middle rail does not change. This facilitates alignment and connection between the inner rail and the transition piece during installation. After the inner rail is inserted into the transition piece, the transition piece disengages from the fastener under the push of the inner rail, allowing the inner rail and the transition piece to slide relative to the middle rail, thus realizing the sliding function of the slide rail. Specifically, the guide groove on the main body of the fastener guides the inner rail and the transition piece during insertion, and the second limiting element achieves the locking and limiting of the transition piece and the fastener. By sliding the transition piece relative to the middle rail, the transition piece passes the second limiting piece and enters the receiving space at the connecting piece. The connecting piece, the second limiting piece, and the main body provide temporary fixation for the transition piece, preventing relative movement between the transition piece and the fastener. This temporary fixation of the transition piece on the middle rail facilitates the insertion of the inner rail and the transition piece. The second limiting piece and the connecting piece are made of flexible material, allowing them to shift vertically relative to the main body under stress, unlike rigid materials. This allows the transition piece to disengage from the fastener under the push of the inner rail after the inner rail and transition piece are connected, enabling relative sliding between the inner rail and the middle rail. In existing technology, the transition piece cannot be limited in the closed direction of the slide rail structure, i.e., the direction in which the inner rail and middle rail slide closer together. This causes the transition piece to slide relative to the middle rail when the inner rail and transition piece are inserted, making it difficult for the inner rail to properly insert with the transition piece. This invention improves the convenience and efficiency of slide rail installation.

[0008] Furthermore, the second limiting member includes a guide plate and a limiting foot, the limiting foot protruding from the guide plate, and the guide plate being connected to the connecting plate. The guide plate guides the transition member when it is connected to the fastener, facilitating the transition member's entry into the receiving space of the connecting plate after it passes the limiting foot; the limiting foot limits the transition member, preventing it from sliding back and forth relative to the center rail, thus fixing the transition member in place.

[0009] Furthermore, there are two limiting feet, each located on one side of the guide plate, with the connection point between the connecting plate and the guide plate located between the two limiting feet; or there is one limiting foot, connected to the middle of the connecting plate via the guide plate. Using two limiting feet allows for even force distribution during limiting and also improves the stability of the limiting action. Using a single limiting foot can also meet the limiting requirements of the transition component.

[0010] Furthermore, the limiting leg and the guide plate are inclined together, forming an obtuse angle. The limiting leg is inclined towards the connecting plate to facilitate guidance as the transition piece approaches the fastener.

[0011] Furthermore, the upper surface of the connecting piece is lower than the top of the second limiting member and also lower than the upper surface of the connection between the main body and the connecting piece. This arrangement of the connecting piece creates a limiting effect at both the connection between the connecting piece and the second limiting member and at the connection between the connecting piece and the main body, thus restricting the relative sliding of the transition piece along both ends of the central rail.

[0012] Furthermore, the second limiting member is made of elastic material or plastic, and the connecting piece is also made of elastic material or plastic. Both elastic materials and plastics can deform under force, allowing the transition piece to disengage from the fastener after being subjected to force. Specifically, after the inner rail and the transition piece are aligned and inserted, pushing the inner rail can drive the transition piece to apply force to the second limiting member. At this time, the second limiting member will displace vertically, simultaneously causing the connecting piece to displace vertically, thus allowing the transition piece to slide past the second limiting member and disengage from the fastener. When the force on the transition piece is small, or when the force is not along the sliding direction of the middle rail, the second limiting member can limit the transition piece to facilitate the insertion of the inner rail and the transition piece.

[0013] This utility model also provides a slide rail structure, including a middle rail, a transition piece, and a fastener as described above. The fastener is installed at the end of the middle rail, and the middle rail is slidably connected to the transition piece. When the transition piece slides to the end of the middle rail, it can engage with the fastener. The fastener is fixedly installed on the middle rail, and the transition piece is slidably installed on the middle rail. When the transition piece is located at the end of the middle rail, it can engage with the fastener for limiting. Specifically, the transition piece is made to pass over the second limiting piece so that part of it contacts the connecting piece. The second limiting piece and the main body limit the transition piece, thereby fixing the transition piece to the middle rail and facilitating the installation of the inner rail.

[0014] Furthermore, the middle rail is provided with a clearance position, the second limiting member is located within the clearance position, and the transition member is provided with a notch. A locking part is formed between the notch and the end of the transition member. When the transition member slides to the end of the middle rail, the locking part is located at the connecting piece and the locking part locks with the second limiting member. Specifically, the clearance position can be a vertically penetrating notch. The second limiting member and the connecting piece are cantilevered on the main body. When a vertical force is applied to the connecting piece and the second limiting member, the clearance position allows the second limiting member to swing downward, thereby allowing the transition member to pass over the second limiting member under the push of the inner rail and disengage from the fastener, releasing the fixed connection with the fastener, and then slide relative to it on the middle rail.

[0015] Furthermore, multiple ball bearings are sequentially arranged on both sides of the transition member along its sliding direction with the middle rail. The ball bearings facilitate the sliding connection between the transition member and the middle rail, and also facilitate the sliding connection between the transition member and the inner rail.

[0016] Furthermore, it also includes an outer rail and an inner rail. The middle rail is slidably connected to the outer rail, and the inner rail is slidably connected to the middle rail via the transition piece, and the inner rail is also slidably connected to the transition piece. The outer rail, inner rail, and middle rail form a three-section sliding structure, which can be applied in drawers. Preferably, the outer rail and middle rail can also achieve a sliding fit via a sliding strip.

[0017] Furthermore, it also includes a third limiting member for limiting the transition member and a fourth limiting member for limiting the inner rail. The third limiting member is installed at the end of the middle rail away from the fastener and can abut against the transition member for limiting. The fourth limiting member is installed at the end of the inner rail and can abut against the first limiting member for limiting. It also includes a fifth limiting member and a sixth limiting member. The fifth limiting member is installed on the middle rail, and the sixth limiting member is installed at the end of the outer rail, and the fifth limiting member can abut against the sixth limiting member for limiting. The third and second limiting members can limit the transition member at both ends of the middle rail to prevent the transition member from detaching from the middle rail during sliding. The fourth and first limiting members can limit the inner rail at the end of the middle rail to prevent the inner rail from detaching from the middle rail. The fifth and sixth limiting members can limit the middle rail at the end of the outer rail to prevent the middle rail from detaching from the outer rail.

[0018] This utility model also provides a drawer, including a fixed part, a movable part, and a slide rail structure as described above. The outer rail is fixedly installed in the fixed part, and the inner rail is fixedly installed in the movable part. The fixed part and the movable part are separately arranged. During installation, the outer rail is first installed in the fixed part, then the middle rail is slidably installed in the outer rail, then the transition piece is slidably installed in the middle rail, and the inner rail is installed in the movable part. The drawer is installed by inserting the inner rail into the transition piece and locking it in place. Due to the fastener in the slide rail structure, the positioning of the inner rail and the transition piece is facilitated, which is beneficial for the installation of the inner rail and the transition piece and improves the installation efficiency.

[0019] The beneficial effects of this utility model are as follows:

[0020] By cooperating with the second limiting piece on the fastener, the transition piece can be partially accommodated in the accommodating space of the connecting piece, thereby allowing the transition piece to be fixed on the middle rail. When the inner rail and the transition piece are installed, it can prevent the transition piece from sliding randomly, which helps to improve installation efficiency and increase installation convenience. Attached Figure Description

[0021] Figure 1 This is a structural diagram of a fastener according to Embodiment 1 of this utility model.

[0022] Figure 2 This is a structural diagram of a fastener according to Embodiment 2 of this utility model.

[0023] Figure 3 This is an exploded structural diagram of a slide rail structure according to this utility model.

[0024] Figure 4 This is a structural diagram of a slide rail structure of this utility model in the state of the transition piece and the fastener being engaged.

[0025] Figure 5 This is a structural diagram of a slide rail structure of this utility model in the state where the transition piece and the fastener are detached.

[0026] Figure 6 This is a schematic diagram showing the connection of various components of a slide rail structure according to this utility model.

[0027] Figure 7 This is a structural diagram of the transition component of this utility model.

[0028] Figure 8 yes Figure 4 A magnified view of a portion of point A in the middle.

[0029] Figure 9 yes Figure 8 A schematic diagram showing the transition piece sliding towards the inner rail, when it approaches and contacts the limiting foot.

[0030] Figure 10yes Figure 8 A schematic diagram showing the state in which the transition piece applies force to the limiting support leg when it slides towards the inner rail.

[0031] Figure 11 yes Figure 8 A schematic diagram showing the state in which the transition piece applies force to the limiting support leg when it slides away from the inner rail.

[0032] The markings in the diagram are explained as follows:

[0033] 1. Fastener; 11. Main body; 12. Guide groove; 13. First limiting component; 14. Second limiting component; 141. Guide plate; 142. Limiting support foot; 15. Connecting plate; 2. Middle rail; 21. Clearance position; 22. Third limiting component; 23. Fifth limiting component; 3. Transition component; 31. Notch; 32. Ball bearing; 33. Snap-fit ​​part; 4. Outer rail; 41. Sixth limiting component; 5. Inner rail; 51. Fourth limiting component; 6. Sliding strip. Detailed Implementation

[0034] The accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0035] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "long," and "short" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0036] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings:

[0037] Example 1

[0038] like Figure 1The illustration shows an embodiment of a fastener according to the present invention, comprising a main body 11, on which two guide grooves 12 are provided in parallel, and a first limiting member 13 is provided between the two guide grooves 12; it also includes a second limiting member 14 and a connecting piece 15, the second limiting member 14 being provided protruding from the end of the main body 11, and the two ends of the connecting piece 15 being connected to the second limiting member 14 and the main body 11 respectively, forming two limiting points at the two ends of the connecting piece 15, and forming an accommodating space between the two limiting points; the second limiting member 14 and the connecting piece 15 are both located between the two guide grooves 12 or between the extension lines of the two guide grooves 12, and both the second limiting member 14 and the connecting piece 15 are made of flexible material. The fastener 1 of this utility model serves as a limiting element and is applied in a slide rail structure, which can be used in a drawer. The fastener 1 is installed on the middle rail 2 of the slide rail structure to limit the transition piece 3, which is slidably connected to the middle rail 2. This ensures that the relative position of the transition piece 3 and the middle rail 2 does not change, facilitating the alignment and connection of the inner rail 5 and the transition piece 3 during installation. After the inner rail 5 is inserted into the transition piece 3, the transition piece 3 is disengaged from the fastener 1 by the push of the inner rail 5, allowing the inner rail 5 and the transition piece 3 to slide relative to the middle rail 2, thus realizing the sliding function of the slide rail structure. Specifically, the guide groove 12 provided on the main body 11 of the fastener 1 facilitates the guidance when the inner rail 5 and the transition piece 3 are inserted. The second limiting element 14 achieves the locking and limiting of the transition piece 3 and the fastener 1. The relative sliding of component 3 and the middle rail 2 allows the transition component 3 to pass over the second limiting component 14 and enter the receiving space at the connecting piece 15. The limiting between the connecting piece 15, the second limiting component 14, and the main body 11 allows the transition component 3 to be temporarily fixed, so that the position between the transition component 3 and the fastener 1 does not move relative to each other. That is, the transition component 3 is temporarily fixed on the middle rail 2, so that the inner rail 5 and the transition component 3 can be inserted. The second limiting component 14 and the connecting piece 15 are made of flexible materials. Compared with rigid materials, after being subjected to force, the second limiting component 14 and the connecting piece 15 can be vertically offset relative to the main body 11. So that after the inner rail 5 and the transition component 3 are connected, the transition component 3 is pushed by the inner rail 5 to disengage from the fastener 1, so that the inner rail 5 and the transition component 3 can slide relative to the middle rail 2. In the prior art, the transition piece 3 cannot be limited in the closing direction of the slide rail structure, that is, in the direction in which the inner rail 5 and the middle rail 2 slide relative to each other. As a result, when the inner rail 5 and the transition piece 3 are inserted, the transition piece 3 will push the relative sliding between the transition piece 3 and the middle rail 2, making it difficult for the inner rail 5 to be properly inserted with the transition piece 3. This utility model improves the convenience of slide rail structure installation and increases installation efficiency.

[0039] Specifically, the upper surface of the connecting piece 15 is lower than the top of the second limiting member 14 and also lower than the upper surface of the connection between the main body 11 and the connecting piece 15. The connecting piece 15 is configured in this way to form a limit at the connection between the connecting piece 15 and the second limiting member 14, and at the connection between the connecting piece 15 and the main body 11, so as to restrict the transition member 3 from sliding relative to each other along the two ends of the middle rail 2.

[0040] As an improvement to this embodiment, the second limiting member 14 includes a guide plate 141 and a limiting leg 142. The limiting leg 142 protrudes from the guide plate 141, and the guide plate 141 is connected to the connecting piece 15. The guide plate 141 can guide the transition member 3 when it is connected to the fastener 1, so that the transition member 3 can enter the receiving space of the connecting piece 15 after passing the limiting leg 142. The limiting leg 142 is used to limit the transition member 3, preventing the transition member 3 from sliding back and forth relative to the middle rail 2, so that the transition member 3 can be limited and fixed.

[0041] Specifically, there are two limiting feet 142, which are located on both sides of the guide plate 141, and the connection between the connecting plate 15 and the guide plate 141 is located between the two limiting feet 142. When the two limiting feet 142 are used for limiting, the force can be evenly distributed, and the stability of the limiting can also be improved.

[0042] Furthermore, the limiting foot 142 and the guide plate 141 are inclined together, forming an obtuse angle. The limiting foot 142 is inclined toward the connecting plate 15 to facilitate guidance as the transition piece 3 approaches the fastener 1.

[0043] As an improvement to this embodiment, the second limiting member 14 is made of elastic material or plastic, and the connecting piece 15 is also made of elastic material or plastic. Both elastic materials and plastics can generate a certain deformation when subjected to force, so that the transition piece 3 can disengage from the fastener 1 after being subjected to force. Specifically, after the inner rail 5 and the transition piece 3 are aligned and inserted, pushing the inner rail 5 can drive the transition piece 3 to apply force to the second limiting member 14. At this time, the second limiting member 14 will displace in the vertical direction, simultaneously causing the connecting piece 15 to displace in the vertical direction, thereby allowing the transition piece 3 to slide past the second limiting member 14, thus separating the transition piece 3 from the fastener 1. When the force on the transition piece 3 is small, or when the force is not along the sliding direction of the middle rail 2, the second limiting member 14 can limit the transition piece 3 to facilitate the insertion of the inner rail 5 and the transition piece 3.

[0044] Example 2

[0045] like Figure 2The diagram shows another embodiment of a fastener according to this utility model. This embodiment is similar to Embodiment 1, except that there is only one limiting leg 142, which is connected to the middle of the connecting piece 15 via a guide piece 141. The limiting leg 142 limits the transition piece 3, thereby improving the ease of installation between the inner rail 5 and the transition piece 3.

[0046] Example 3

[0047] like Figures 3 to 11 The illustration shows an embodiment of a slide rail structure according to this utility model, including a middle rail 2, a transition piece 3, and a fastener 1 as described above. The fastener 1 is installed at the end of the middle rail 2, and the middle rail 2 and the transition piece 3 are slidably connected. When the transition piece 3 slides to the end of the middle rail 2, it can engage with the fastener 1. The fastener 1 is fixedly installed on the middle rail 2, and the transition piece 3 is slidably installed on the middle rail 2. When the transition piece 3 is located at the end of the middle rail 2, it can engage with the fastener 1 for limiting. Specifically, the transition piece 3 is made to pass over the second limiting piece 14 so that part of it contacts the connecting piece 15. The second limiting piece 14 and the main body 11 limit the transition piece 3, thereby fixing the transition piece 3 to the middle rail 2, which facilitates the installation of the inner rail 5.

[0048] Specifically, the middle rail 2 is provided with a clearance position 21, the second limiting member 14 is located within the clearance position 21, and the transition member 3 is provided with a notch 31. A locking part 33 is formed between the notch 31 and the end of the transition member 3. See Figures 8 to 10 When the transition piece 3 slides to the end of the middle rail 2, the locking part 33 is located at the connecting piece 15 and the locking part 33 engages with the second limiting piece 14. Specifically, the clearance 21 can be a through notch 31, and the second limiting piece 14 and the connecting piece 15 are cantilevered on the main body 11, see Figure 11 When a vertical force is applied to the connecting piece 15 and the second limiting member 14, the setting of the clearance position 21 allows the second limiting member 14 to swing downward, thereby allowing the transition member 3 to pass over the second limiting member 14 under the push of the inner rail 5 and disengage from the fastener 1, releasing the fixed connection with the fastener 1, and then being able to slide relative to the middle rail 2.

[0049] The transition piece 3 has multiple balls 32 arranged sequentially on both sides along its sliding direction with the middle rail 2. The arrangement of the balls 32 facilitates the sliding connection between the transition piece 3 and the middle rail 2, and also facilitates the sliding connection between the transition piece 3 and the inner rail 5.

[0050] As an improvement to this embodiment, it further includes an outer rail 4 and an inner rail 5. The middle rail 2 is slidably connected to the outer rail 4, and the inner rail 5 is slidably connected to the middle rail 2 via a transition piece 3, and the inner rail 5 is also slidably connected to the transition piece 3. The outer rail 4, inner rail 5, and middle rail 2 form a three-section sliding structure, which can be applied in a drawer. Preferably, the outer rail 4 and the middle rail 2 can also achieve a sliding fit via a sliding strip 6.

[0051] Furthermore, it also includes a third limiting member 22 for limiting the transition member 3 and a fourth limiting member 51 for limiting the inner rail 5. The third limiting member 22 is installed at the end of the middle rail 2 away from the fastener 1 and can abut against the transition member 3 for limiting. The fourth limiting member 51 is installed at the end of the inner rail 5 and can abut against the first limiting member 13 for limiting. It also includes a fifth limiting member 23 and a sixth limiting member 41. The fifth limiting member 23 is installed at the end of the middle rail 2 away from the fastener 1 or in the middle of the middle rail 2. The sixth limiting member 41 is installed at the end of the outer rail 4 and the fifth limiting member 23 can abut against the sixth limiting member 41 for limiting. The third limiting member 22 and the second limiting member 14 can limit the transition member 3 at both ends of the middle rail 2 to prevent the transition member from detaching from the middle rail 2 during the sliding process; the fourth limiting member 51 and the first limiting member 13 can limit the inner rail 5 at the end of the middle rail 2 to prevent the inner rail 5 from detaching from the middle rail 2; the fifth limiting member 23 and the sixth limiting member 41 can limit the middle rail 2 at the end of the outer rail 4 to prevent the middle rail 2 from detaching from the outer rail 4.

[0052] Example 4

[0053] This embodiment is an example of a drawer, including a fixed part, a movable part, and a slide rail structure as described above. The outer rail 4 is fixedly installed in the fixed part, and the inner rail 5 is fixedly installed in the movable part.

[0054] The fixed part and the movable part are set separately. During installation, the outer rail 4 is first installed on the fixed part, then the middle rail 2 is slidably installed on the outer rail 4, the transition piece 3 is slidably installed on the middle rail 2, and the inner rail 5 is installed on the movable part. The drawer can be installed by inserting the inner rail 5 into the transition piece 3 and locking it in place. Due to the fastener 1 in the slide rail structure, it is easy to position the inner rail 5 and the transition piece 3 when they are aligned and connected, which is beneficial to the installation of the inner rail 5 and the transition piece 3 and improves the installation efficiency.

[0055] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A fastener, comprising a body (11), on which two guide grooves (12) are provided in parallel, and a first limiting member (13) is provided between the two guide grooves (12); characterized in that, It also includes a second limiting member (14) and a connecting piece (15). The second limiting member (14) protrudes from the end of the main body (11). The two ends of the connecting piece (15) are respectively connected to the second limiting member (14) and the main body (11), and two limiting points are formed at the two ends of the connecting piece (15), forming an accommodating space between the two limiting points. The second limiting member (14) and the connecting piece (15) are both located between the two guide grooves (12) or between the extension lines of the two guide grooves (12). The second limiting member (14) and the connecting piece (15) are both made of flexible materials.

2. The fastener according to claim 1, characterized in that, The second limiting member (14) includes a guide plate (141) and a limiting foot (142). The limiting foot (142) protrudes from the guide plate (141), and the guide plate (141) is connected to the connecting piece (15).

3. The fastener according to claim 2, characterized in that, There are two limiting feet (142), which are located on both sides of the guide plate (141) respectively. The connection between the connecting plate (15) and the guide plate (141) is located between the two limiting feet (142); or there is one limiting foot (142), which is connected to the middle of the connecting plate (15) through the guide plate (141).

4. The fastener according to claim 2 or 3, characterized in that, The limiting support (142) and the guide plate (141) are inclined together, forming an inclination angle between them, which is an obtuse angle.

5. The fastener according to claim 1, characterized in that, The upper surface of the connecting piece (15) is lower than the top of the second limiting member (14) and also lower than the upper surface of the connection between the main body (11) and the connecting piece (15).

6. The fastener according to claim 1, characterized in that, The second limiting member (14) is made of elastic material or plastic, and the connecting piece (15) is also made of elastic material or plastic.

7. A slide rail structure, characterized in that, Includes a center rail (2), a transition piece (3), and a fastener (1) as described in any one of claims 1 to 6, wherein the fastener (1) is installed at the end of the center rail (2), the center rail (2) is slidably connected to the transition piece (3), and the transition piece (3) can engage with the fastener (1) when it slides to the end of the center rail (2).

8. The slide rail structure according to claim 7, characterized in that, The middle rail (2) is provided with a clearance position (21), the second limiting member (14) is located in the clearance position (21), the transition member (3) is provided with a notch (31), and a snap-fit ​​part (33) is formed between the notch (31) and the end of the transition member (3). When the transition member (3) slides to the end of the middle rail (2), the snap-fit ​​part (33) is located at the connecting piece (15) and the snap-fit ​​part (33) snaps with the second limiting member (14).

9. The slide rail structure according to claim 8, characterized in that, The transition piece (3) has multiple balls (32) arranged sequentially on both sides along its sliding direction with the middle rail (2).

10. The slide rail structure according to claim 9, characterized in that, It also includes an outer rail (4) and an inner rail (5). The middle rail (2) can be slidably connected to the outer rail (4). The inner rail (5) is slidably connected to the middle rail (2) through the transition piece (3), and the inner rail (5) can be slidably connected to the transition piece (3).

11. The slide rail structure according to claim 10, characterized in that, It also includes a third limiting member (22) for limiting the transition member (3) and a fourth limiting member (51) for limiting the inner rail (5). The third limiting member (22) is installed at the end of the middle rail (2) away from the fastener (1) and can abut against the transition member (3) for limiting. The fourth limiting member (51) is installed at the end of the inner rail (5) and can abut against the first limiting member (13) for limiting. It also includes a fifth limiting member (23) and a sixth limiting member (41). The fifth limiting member (23) is installed at the middle rail (2) and the sixth limiting member (41) is installed at the end of the outer rail (4). The fifth limiting member (23) can abut against the sixth limiting member (41) for limiting.

12. A drawer, characterized in that, It includes a fixed part, a movable part, and a slide rail structure as described in claim 11, wherein the outer rail (4) is fixedly mounted on the fixed part, and the inner rail (5) is fixedly mounted on the movable part.

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