Improved pusher structure for slide rails

Abstract

The application provides an improved push-pull structure for a sliding rail, which is simple in structure, small in occupied space, wide in application range, and capable of effectively preventing component cooperation failure and ensuring normal opening and closing of the sliding rail; the improved push-pull structure comprises a seat body mounted on a fixed rail, a sliding block and a swing type locking plate, the swing type locking plate is rotatably mounted on a sliding rail, the swing type locking plate is provided with a locking column, the sliding block is slidably connected with the seat body, the seat body is provided with a protruding platform, the protruding platform is provided with oppositely arranged first and second protrusions, the first and second protrusions divide the protruding platform into at least three regions and form a surrounding type switch groove with the second protrusion as a surrounding point, and the surrounding type switch groove comprises a locking groove; when the locking column is located in the locking groove, the sliding rail is closed.

Description

Technical Field

[0001] This invention relates to the field of slide rail technology, specifically to an improved push-spring structure for slide rails. Background Technology

[0002] In cabinets or furniture with drawers, such as wardrobes and cupboards, drawer slides are usually installed to facilitate the opening and closing of drawers. To facilitate handle-free drawer opening and closing, the slides often also include a push-tap mechanism. Existing push-tap mechanisms, such as the "Push-Tap Structure for Drawer Slides" (publication number CN109757884A), employ a structure with a switch groove, a linear groove, and a rotating groove on the base. The locking plate and guide plate slide synchronously via a linkage plate, and a lever plate and guide plate engage in a levering action to unlock and lock the push-tap mechanism, thus opening and closing the drawer. However, since both unlocking and locking of the aforementioned push-tap structure require the locking plate and guide plate to be linked via a linkage plate, and both... The sliding trajectory involves both linear and curvilinear motion. That is, the locking plate and the guide plate must slide simultaneously between the corresponding grooves on the base and be rotated by the guide plate to achieve unlocking and self-locking. If the cooperation of any component such as the locking plate, guide plate, or linkage plate fails during the sliding process, the entire push-out structure will not be able to operate normally, affecting the normal opening or closing of the drawer slide. Secondly, because the locking plate and guide plate need to slide in conjunction, the existing push-out structure occupies a large space, especially the necessary working space required by the locking plate and guide plate, which cannot meet the application requirements of drawer slides with short self-return distance and small end installation space. Summary of the Invention

[0003] To address the problems of existing push-spring structures for drawer slides being complex, prone to failure, and having a large overall footprint and narrow application range, this invention provides an improved push-spring structure for drawer slides. This improved structure has a simple structure, fewer mating parts, effectively prevents component failure, ensures normal opening and closing of the drawer slide, occupies less space, and has a wide range of applications.

[0004] The present invention adopts the following technical solution: an improved push-spring structure for a slide rail, comprising a base mounted on a fixed rail, characterized in that: it further comprises a sliding block and a swing-type locking plate, the swing-type locking plate being rotatably mounted on the slide rail, the swing-type locking plate having a locking post, the sliding block and the base being slidably connected, the base having a raised platform, the raised platform having a first protrusion and a second protrusion arranged opposite to each other, the first protrusion and the second protrusion dividing the raised platform into at least three regions and forming a surrounding switch channel with the second protrusion as the surrounding point, the surrounding switch channel including a locking groove, and when the locking post is located in the locking groove, the slide rail is closed.

[0005] Its further features are:

[0006] The surrounding switch channel also includes a closing channel, a self-locking guide limiting channel, and an opening channel. The self-locking guide limiting channel and the locking channel are sequentially connected between the first protrusion and the second protrusion. One vertical surface of the second protrusion relative to the protruding platform is a self-locking guide surface, which forms the closing channel with the protruding platform. The other vertical surface of the second protrusion relative to the protruding platform is an unlocking guide surface, which forms the opening channel with the protruding platform.

[0007] The base is provided with a sliding guide plate, and the sliding block is provided with a concave groove that is sleeved on the sliding guide plate and slides in cooperation with the sliding guide plate; the sliding guide plate is provided with a guide groove, and the concave groove is provided with a guide block that cooperates with the guide groove;

[0008] The sliding guide plate has flanges on both sides along the length of the strip, and the sliding block has a hook-shaped groove that is nested with the flanges;

[0009] The seat is provided with a tension spring guide post, the sliding block is provided with a receiving hole groove, a first tension spring is sleeved on the tension spring guide post, one end of the first tension spring is fixedly connected to the seat, and the other end passes through the receiving hole groove and is fixedly connected to the end of the receiving hole groove away from the protruding platform;

[0010] The sliding block has a clearance opening at one end near the raised platform;

[0011] One end of the swing-type locking plate is provided with a locking post and the other end is provided with a swing block. Between the locking post and the swing block, the swing-type locking plate is provided with a first through hole for installing a rotating shaft.

[0012] The swing-type locking plate is connected to a second tension spring at one end near the swing block, and the other end of the second tension spring is hooked to the sliding rail. The swing block is located at the fan-shaped through hole of the sliding rail.

[0013] The swing-type lock plate is a pointer-shaped lock plate;

[0014] The slide rail is a three-section slide rail, including the fixed rail, the intermediate rail and the sliding rail, and the sliding rail is slidably connected to the fixed rail through the intermediate rail.

[0015] With the above-described structure, the self-locking and unlocking of the push-spring structure can be achieved by sliding the swing-type locking plate on the switch groove of the base, reducing the number of components that need to cooperate with each other and effectively preventing the problem of component failure. At the same time, it eliminates the rotating groove and straight groove of the guide plate sliding in the prior art, and shortens and improves the straight groove part of the locking plate sliding, effectively reducing the space occupied. Moreover, the structure is simple and the operation is reliable, which can meet the application requirements of slide rail assemblies with short self-recovery distance and small end installation space, and improves the range of applicable slide rails. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the slide rail in the closed state as an application example of the present invention;

[0017] Figure 2 This is a structural schematic diagram of the slide rail under tension, as an application example of the present invention.

[0018] Figure 3 This is an exploded structural diagram of a slide rail, an application example of the present invention;

[0019] Figure 4 This is a schematic diagram showing another disassembled structure of the slide rail in an application example of the present invention.

[0020] Figure 5 This is a schematic diagram of the push spring structure for removing the slide rail when the slide rail is closed according to the present invention;

[0021] Figure 6 This is an exploded structural diagram of the ejector structure of the present invention from one perspective;

[0022] Figure 7 This is an exploded structural diagram of the pusher structure of the present invention from another perspective.

[0023] Figure 8 These are schematic diagrams of the front and back of the pusher structure base of the present invention;

[0024] Figure 9 These are schematic diagrams of the front and back of the sliding block of the pusher structure of the present invention. Detailed Implementation

[0025] The invention will now be further described with reference to the accompanying drawings:

[0026] like Figures 1-9 As shown, the present invention provides an improved push-spring structure for a slide rail, comprising a base 6 mounted on a fixed rail 1, and further comprising a sliding block 4 and a swing-type locking plate 8. The swing-type locking plate 8 is rotatably mounted on the slide rail 3 and is provided with a locking pin 801. The sliding block 4 and the base 6 are slidably connected, which can improve the balance and stability of the structure; as shown. Figure 8 and Figure 6As shown, the base 6 has a raised platform 607, and the raised platform 607 has a first protrusion 608 and a second protrusion 609 arranged opposite to each other. The first protrusion 608 and the second protrusion 609 divide the raised platform 607 into at least three regions I, II, and III, and form a surrounding switch channel with the second protrusion 609 as the surrounding point. The surrounding switch channel includes a locking groove 610, combined with... Figure 5 and Figure 1 As shown, when the locking pin 801 is located in the locking groove 610, the slide rail is closed.

[0027] like Figure 8 and Figure 5 , Figure 6 As shown, the surrounding switch channel also includes a closing channel, a self-locking guide limiting groove 611, and an opening channel. A self-locking guide limiting groove 611 and a locking groove 610 are sequentially connected between the first protrusion 608 and the second protrusion 609. One vertical surface of the second protrusion 609 relative to the protruding platform 607 is a self-locking guide surface 609c, which forms an open closing channel with the protruding platform 607. The other vertical surface of the second protrusion 609 relative to the protruding platform 607 is an unlocking guide surface 609a, which forms an open opening channel with the protruding platform 607. Preferably, as... Figure 8 As shown, the closing channel is located in region I, the self-locking guide limiting groove 611 and the locking groove 610 are located in region II, and the opening channel is located in region III. The side of the second protrusion 609 opposite to the first protrusion 608 is an arc-shaped surface 609b. The self-locking guide surface 609c, the arc-shaped surface 609b, and the unlocking guide surface 609a are connected end to end in a triangular shape. The side of the first protrusion 608 opposite to the second protrusion 609 is a sharp angle. The sharp angle end 608c and the two adjacent side surfaces are connected to the arc-shaped surface 609b. 9b forms the two sides of the self-locking guide limiting groove 611 and the locking groove 610: the upper side face adjacent to the sharp corner end 608c is the self-locking limiting surface 608a, and the lower side face is the unlocking limiting surface 608b. The self-locking limiting surface 608a and the arc-shaped surface 609b relative to the arc segment of the self-locking limiting surface 608a form the two sides of the self-locking guide limiting groove 611. The unlocking limiting surface 608b and the arc-shaped surface 609b relative to the arc segment of the unlocking limiting surface 608b form the two sides of the locking groove 610.

[0028] like Figure 8 and Figure 9As shown, the base 6 is provided with a sliding guide plate 602, and the sliding block 4 is provided with a concave groove 405 that fits onto and slides with the sliding guide plate 602; the sliding guide plate 602 is provided with a guide groove 606, and the concave groove 405 is provided with a guide block 402 that fits into the guide groove 606; the sliding guide plate 602 is provided with flanges 603 on both sides along its length, and the sliding block 4 is provided with a hook-shaped groove 404 that nests into the flanges 603, which can improve the stability of sliding; the base 6 is provided with a tension spring guide post 60 1. Preferably, there are two tension spring guide posts 601, located on both sides of the sliding guide plate 602 and arranged symmetrically to further improve balance stability and ensure operational reliability; the sliding block 4 is provided with a receiving slot 407, the first tension spring 5 is sleeved on the tension spring guide post 601, one end of the first tension spring 5 is fixedly connected to the seat 6, and the other end passes through the receiving slot 407 and is fixedly connected to the end of the receiving slot 407 away from the protruding platform 607, further improving sliding stability and overall structural balance stability; The sliding block 4 has a clearance opening 403 at one end near the raised platform 607 to prevent the sliding block from colliding with the raised platform of the seat when the slide rail is closed, thereby improving the service life of the overall structure. Furthermore, as the sliding block gradually approaches the raised platform, the clearance opening surrounds the raised platform, forming a relatively closed channel between the open and closed channels, thus limiting the swing-type locking plate and improving the operational reliability of the push-spring structure. Preferably, the sliding guide plate 602 can be integrally formed with the end of the seat 6, allowing the raised platform 607 to be placed on the sliding guide plate 602, improving processing convenience and overall structural stability, and extending service life. The bottom of the sliding block 4 has a support block 406 to improve sliding stability. The end of the sliding block 4 away from the raised platform 607 also has a buffer block 401 to buffer the impact force when the slide rail is closed, preventing damage to components and improving the service life of the slide rail and the push-spring structure.

[0029] like Figure 3 and Figure 7 As shown, the swing-type locking plate 8 has a locking pin 801 at one end and a swing block 803 at the other end. Between the locking pin 801 and the swing block 803, the swing-type locking plate 8 has a first through hole 802 for mounting a rotating shaft. Preferably, the rotating shaft is a rivet 7, which is easy to process and replace, has low cost, and allows for flexible rotation. A second tension spring 9 is connected to one end of the swing-type locking plate 8 near the swing block 803. The other end of the second tension spring 9 is hooked to the sliding rail 3. The swing block 803 of the swing-type locking plate 8 is located at the fan-shaped through hole 302 opened in the sliding rail 3. Preferably, the swing-type locking plate 8 has a hook part 804 at the swing block 803. One end of the second tension spring 9 is hooked to the hook part 804, and the other end is hooked to the second through hole 303 opened in the sliding rail 3. The swing-type locking plate 8 is fixedly installed on the sliding rail 3 through the first through hole 802, the rivet 7, and the third through hole 301 opened in the sliding rail 3. The swing-type locking plate 8 is a pointer-shaped locking plate, which is convenient to rotate and has good stability.

[0030] like Figures 1-9 As shown, taking a three-section slide rail with a roughly C-shaped cross-section as an example, the three-section slide rail includes a fixed rail 1, an intermediate rail 2, and a sliding rail 3. The sliding rail 3 is slidably connected to the fixed rail 1 through the intermediate rail 2, and the fixed rail 1 and the sliding rail 3 are arranged with C-shaped openings facing each other. The sliding block 4 and the seat 6 are slidably connected. The seat 6 is fixedly installed at the end of the fixed rail 1 through the fixing hole 604 and the bottom locking block 605. The sliding block 4 abuts against the fixed rail 1 through the bottom support block 406, which provides support when the sliding block 4 slides. The swing-type locking piece 8 is fixedly installed on the sliding rail 3 through the rivet 7.

[0031] Its working principle is as follows: Figure 2 and Figure 6 As shown, when the slide rail is open, the sliding block 4 is located at the end of the sliding guide plate 602 away from the raised platform 607 under the elastic force of the two first tension springs 5, and the swing locking plate 8 is in a stable linear state with the second tension spring 9 under the action of the second tension spring 9.

[0032] like Figure 2 , Figure 4 , Figure 5 , Figure 8 and Figure 9As shown, when the slide rail needs to be closed, the slide rail 3 is pushed along the closing direction. The slide rail 3 and the intermediate rail 2 move together. During the movement, the intermediate rail 2 first contacts the sliding block 4 and pushes the sliding block 4 to overcome the tension of the first tension spring 5, causing the sliding block 4 to move along the sliding guide plate 602 of the seat body 6. At the same time, the guide block 402 in the concave groove 405 on the sliding block 4 slides synchronously along the guide groove 606 until the guide block 402 is limited by the end of the guide groove 606. The sliding block 4 stops moving, and the intermediate rail 2 also stops moving at the limit position and presses the first tension spring 5 through the sliding block 4. The slide rail 3 is pushed further, so that the locking pin 801 of the swing lock plate 8 contacts the self-locking guide surface 609c on the seat body 6. It is supported and guided by the self-locking guide surface 609c. While the slide rail 3 continues to move, the locking pin 801 moves along the self-locking guide surface 609c and in the closing channel located in the first region on the raised platform 607. Since the swing lock plate 8 is always subjected to The tension of the second tension spring 9 and the limiting effect of the fan-shaped through hole 302 on the swing block 803 cause the swing locking plate 8 to deflect clockwise around the rivet 7 as the rotation center until the locking pin 801 passes the top of the self-locking guide surface 609c and enters the self-locking guide limiting groove 611. At this time, the external force applied to the sliding rail 3 is released, and the second tension spring 9 acts as a tensioning force, while the limiting effect of the fan-shaped through hole 302 and the self-locking limiting surface 608a and arc surface 609 of the first protrusion act as a limiting force. Under the limiting and guiding action of the arc segment relative to the self-locking limiting surface 608a, the swing-type locking plate 8 rotates counterclockwise around the rivet 7 as the rotation center in the self-locking guide limiting groove 611 until the swing-type locking plate 8 reaches force balance. Then, the locking pin 801 of the swing-type locking plate 8 falls into the locking groove 610 and is limited by the arc segment of the unlocking limiting surface 608b and the arc surface 609b relative to the unlocking limiting surface 608b. The locking pin 801 is locked in the locking groove 610, and the slide rail is completely closed. Figure 1 , Figure 3 and Figure 5 As shown.

[0033] like Figure 1 , Figure 3 , Figure 5 , Figure 8 and Figure 9As shown, when the slide rail opens from the closed state, a force is first applied to the slide rail 3 in the closing direction, pushing the slide rail 3 so that the swing lock plate 8 overcomes the tension of the second tension spring 9, and the locking pin 801 on the swing lock plate 8 moves along the unlocking limiting surface 608b towards the opening channel located in the third region on the protruding platform 607 under the limiting action of the unlocking limiting surface 608b. Under the limiting action of the fan-shaped through hole 302, the swing lock plate 8 deflects counterclockwise around the rivet 7 as the rotation center until the locking pin 801 passes the bottom end of the arc segment of the arc surface 609b relative to the unlocking limiting surface 608b and enters the opening channel. The locking groove 610 releases the locking pin. Locking 801 simultaneously unlocks both the sliding rail 3 and the intermediate rail 2. Then, the external force applied to the sliding rail 3 is removed. Under the tension of the second tension spring 9, the locking pin 801 moves along the unlocking guide surface 609a in the opening channel and towards the stretching direction of the sliding rail. Simultaneously, limited by the fan-shaped through hole 302, the swing-type locking plate 8 still deflects counter-clockwise around the rivet 7 as its rotation center. Since the sliding rail 3 and the intermediate rail 2 are now unlocked, the sliding block 4, under the rebound force of the first tension spring 5, pushes the intermediate rail 2 to move along the stretching direction of the sliding rail. The sliding rail 3 moves synchronously with the intermediate rail 2, and the sliding rail automatically rebounds and opens.

[0034] This application can effectively reduce the space occupied, and has a simple structure and reliable operation. It can meet the application requirements of slide rail components with short self-resetting distance and small end installation space, thus expanding the range of applicable slide rails.

Claims

1. An improved push-spring structure for a slide rail, comprising a base mounted on a fixed rail, characterized in that: It also includes a sliding block and a swing-type locking plate, the swing-type locking plate being rotatably mounted on the sliding rail, the swing-type locking plate having a locking pin, the sliding block and the base being slidably connected, the base having a raised platform, the raised platform having a first protrusion and a second protrusion arranged opposite to each other, the first protrusion and the second protrusion dividing the raised platform into at least three regions and forming a surrounding switch channel with the second protrusion as the surrounding point, the surrounding switch channel including a locking groove, the sliding rail being closed when the locking pin is located in the locking groove; the base having a sliding guide plate, the... The sliding block has a concave groove that fits onto and slides with the sliding guide plate; the sliding guide plate has a guide groove, and the concave groove has a guide block that mates with the guide groove; the sliding guide plate has flanges on both sides along its length, and the sliding block has a hook-shaped groove that nests with the flanges; the end of the sliding block near the raised platform has an clearance opening; one end of the swing-type locking plate has a locking pin, and the other end has a swing block; between the locking pin and the swing block, the swing-type locking plate has a first through hole for mounting a rotating shaft; the... The surround-type switch channel also includes a closing channel, a self-locking guide limiting channel, and an opening channel. The self-locking guide limiting channel and the locking channel are sequentially connected between the first protrusion and the second protrusion. One vertical surface of the second protrusion relative to the raised platform is a self-locking guide surface, which forms the closing channel with the raised platform. The other vertical surface of the second protrusion relative to the raised platform is an unlocking guide surface, which forms the opening channel with the raised platform. The base is provided with a tension spring guide post, and the sliding block is provided with a receiving... The slot has a first tension spring sleeved on the tension spring guide post. One end of the first tension spring is fixedly connected to the seat body, and the other end passes through the receiving slot and is fixedly connected to the end of the receiving slot away from the protruding platform. The swing locking piece is connected to a second tension spring at one end near the swing block, and the other end of the second tension spring is hooked to the sliding rail. The swing block is located at the fan-shaped through hole of the sliding rail. The sliding rail is a three-section sliding rail, including the fixed rail, the intermediate rail and the sliding rail. The sliding rail is slidably connected to the fixed rail through the intermediate rail.

2. The improved push-spring structure for a slide rail according to claim 1, characterized in that: The swing-type lock plate is a pointer-shaped lock plate.

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