Front lock device and sliding rail assembly
By installing a front locking device on the slide rail, the slide rail is automatically locked and unlocked using components such as protrusions, locking block A, locking block B, and push blocks. This solves the stability problem of the slide rail when it is fully extended and improves its stability in use.
Patent Information
- Application Number
- CN202520154300.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-01-23
AI Technical Summary
Existing slide rails are prone to retraction, wobbling, or detachment when fully extended, causing inconvenience in use.
A front locking device is installed on the slide rail. Through the cooperation of components such as protrusions, locking block A, locking block B and push block, the slide rail is automatically locked when fully pulled out, and unlocked by the operation of push rod and push block.
Ensures stable locking of the slide rail when fully extended, improves operational stability, and prevents disengagement. Suitable for multi-section slide rails.
Smart Images
Figure CN223845255U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to slide rail technical field especially relates to front lock device and slide rail assembly. BACKGROUND
[0002] The slide rail is usually installed on the drawer structure of furniture or electrical appliances. The drawer structure comprises a cabinet body and a drawer box which is pulled out or pushed into the cabinet body. The first rail of the slide rail is fixed on both sides of the drawer box, and the second rail is fixed on the inner walls of the cabinet body. When the drawer box is pulled out, the first rail is completely pulled out relative to the second rail.
[0003] Since the first rail is not usually locked when it is completely pulled out relative to the second rail, the first rail is prone to backtracking, shaking or disengaging from the second rail during use, which is inconvenient to use.
[0004] It should be noted that the information disclosed in the above background section is only used to enhance the understanding of the background of the present disclosure, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY
[0005] In view of the deficiencies of the prior art, the utility model discloses a front lock device and a slide rail assembly to solve the problem of inconvenience in use caused by the lack of locking when the first rail is completely pulled out relative to the second rail.
[0006] The technical scheme adopted by the utility model is as follows:
[0007] The front lock device is used for a slide rail, and the slide rail comprises a first rail and a second rail which can slide relative to the first rail. The front lock device comprises: a protruding block arranged at the front end of the inner side of the second rail; a lock block A arranged at the middle part of the outer side of the first rail; and a lock block B arranged at the middle part of the outer side of the first rail and capable of sliding relative to the first rail in a direction perpendicular to the movement of the slide rail. When the first rail is completely pulled out of the second rail, the protruding block contacts the lock block B and can be clamped between the lock block A and the lock block B after pushing away the lock block B, so that the second rail is locked with the first rail.
[0008] A further technical scheme is that the front lock device further comprises: a push block arranged at the front end of the outer side of the first rail and capable of sliding in a direction parallel to the movement of the slide rail; and a push rod with a front end fixed to the push block and a rear end provided with a pushing surface. When the push block is pushed towards the closing direction of the slide rail, the push block drives the push rod to slide towards the rear end, and the pushing surface pushes away the lock block B so that the protruding block is separated from between the lock block A and the lock block B, thereby unlocking the second rail from the first rail.
[0009] Further, the front locking device comprises a sliding seat, and the locking block B is slidable in a sliding channel of the sliding seat; the protrusion and the pushing surface are in contact with the locking block B from the front end of the sliding channel and push the locking block B.
[0010] Further, the sliding seat comprises a first protrusion and a second protrusion extending from the outer side of the first rail, and the first protrusion and the second protrusion have a gap between the first rail, the gap being used for the pushing surface to extend into; the first protrusion and the second protrusion are spaced apart to form the sliding channel perpendicular to the moving direction of the sliding rail; the sliding seat further comprises a waist-shaped hole vertically arranged on the first rail and corresponding to the middle of the sliding channel; a rivet is riveted through the waist-shaped hole and the locking block B, and the rivet is slidable in the waist-shaped hole; and a spring is fixed to the outer side of the first rail and elastically contacts the upper end of the locking block B.
[0011] Further, the rivet has a step portion on the outer side, and the step portion passes through the waist-shaped hole and is exposed to the outer side of the first rail.
[0012] Further, the pushing surface is an inclined surface arranged on the rear side of the upper end of the push rod, the inclined surface is lower near the edge of the locking block A and higher away from the edge of the locking block A, and the inclined surface is in contact with the step portion and pushes the rivet.
[0013] Further, the push block is connected with a compression spring between the rear end and the first rail.
[0014] The utility model discloses further disclose a sliding rail assembly provided with the front locking device, and the sliding rail assembly comprises a sliding rail, the sliding rail comprises a first rail, a second rail slidable relative to the first rail and a third rail slidable relative to the second rail.
[0015] The utility model has the advantages of the following:
[0016] (1) the utility model discloses a front locking device is installed on the sliding rail, and the protrusion is clamped between the locking block A and the locking block B when the sliding rail is completely pulled out, so that the second rail and the first rail are automatically locked. During the advancing process of the sliding rail, the push rod is pushed by pressing the push block, the locking block B is pushed away, the protrusion is moved out of the locking block A and the locking block B, and the second rail and the first rail are unlocked. The front locking device has simple structure and is convenient to use.
[0017] (2) further, the front locking device is installed on the sliding rail assembly, so that the stable locking state between the rails can be ensured even when the sliding rail is completely pulled out, and the stability of the sliding rail is further improved. Meanwhile, the sliding rail can ensure that the rails are not pulled off even when the sliding rail is completely pulled open, and is especially suitable for multi-section sliding rails. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the slide rail structure in an embodiment of the present invention.
[0019] Figure 2 for Figure 1 An enlarged schematic diagram of part A in the middle.
[0020] Figure 3 This is a schematic diagram of the front locking device in an embodiment of the present invention.
[0021] Figure 4 This is a schematic diagram of the slide rail being fully extended in an embodiment of the present invention.
[0022] Figure 5 for Figure 4 Enlarged diagram of part B.
[0023] Figure 6 This is a schematic diagram of the slide rail in a fully closed state in an embodiment of the present invention.
[0024] In the picture:
[0025] 1. First rail; 11. Locking block A; 12. Locking block B; 13. Sliding seat; 131. First boss; 132. Second boss; 133. Waist-shaped hole; 134. Rivet; 135. Stepped part; 14. Push block; 15. Push rod; 151. Pushing surface; 16. Compression spring; 17. Spring piece; 2. Second rail; 21. Protrusion; 3. Third rail; 4. Middle rail retainer; 5. Outer rail retainer. Detailed Implementation
[0026] The specific embodiments of this utility model are described below with reference to the accompanying drawings.
[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the device proposed by this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of this utility model will become clearer according to the following description. It should be noted that the accompanying drawings are in a very simplified form and use non-precise proportions, only used to conveniently and clearly assist in illustrating the purpose of the embodiments of this utility model. Please refer to the accompanying drawings to make the objectives, features, and advantages of this utility model more apparent and understandable. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only used to complement the content disclosed in the specification, for those skilled in the art to understand and read, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.
[0028] First embodiment
[0029] The present embodiment discloses a front locking device.
[0030] Figure 1 The figure is a structural diagram of the slide rail in the present embodiment. As shown in the figure, the front locking device is used in the slide rail, which includes a first rail 1 and a second rail 2 that can slide relative to the first rail 1. The slide rail can have two or more than two rails. In the present embodiment, the first rail 1 is an inner rail, and the second rail 2 is a middle rail. The inner rail is installed on the middle rail through a middle rail holder 4. Figure 1
[0031] The figure is a structural diagram of the front locking device in the present embodiment. As shown in the figure, Figure 2 Figure 1 The figure is an enlarged diagram of part A in the figure. Figure 3 The figure is a structural diagram of the front locking device in the present embodiment. As shown in the figure, Figure 2 and Figure 3 The front locking device includes a protruding block 21, a locking block A 11, and a locking block B 12. The protruding block 21 is arranged at the front end of the inner side of the second rail 2. The locking block A 11 is arranged at the middle part of the outer side of the first rail 1, and the locking block B 12 is arranged at the middle part of the outer side of the first rail 1 and can slide relative to the first rail 1 in the direction perpendicular to the movement of the slide rail. When the first rail 1 is completely pulled out of the second rail 2, the protruding block 21 contacts the locking block B 12 and can be clamped between the locking block A 11 and the locking block B 12 after pushing away the locking block B 12, so as to lock the second rail 2 and the first rail 1. In the embodiment shown in the figure and other figures, the direction indicated by the arrow X is the front end of the slide rail, that is, the opening direction, the opposite direction indicated by the arrow X is the rear end of the slide rail, that is, the closing direction, the direction indicated by the arrow Y is the inner side of the slide rail, the opposite direction indicated by the arrow Y is the outer side of the slide rail, the direction indicated by the arrow Z is the upper end of the slide rail, and the opposite direction indicated by the arrow Z is the lower end of the slide rail. Figure 1 The figure is a structural diagram of the front locking device in the present embodiment. As shown in the figure,
[0032] and Figure 3 Further, the front locking device further includes a pushing block 14 and a pushing rod 15. The pushing block 14 is arranged at the front end of the outer side of the first rail 1 and can slide in the direction parallel to the movement of the slide rail. The pushing rod 15 is fixed at the front end of the pushing block 14, and the rear end is provided with a pushing surface 151. Among them, the pushing block 14 is pushed towards the closing direction of the slide rail, the pushing block 14 drives the pushing rod 15 to slide to the rear end, the pushing surface 151 pushes away the locking block B 12 to make the protruding block 21 out of the locking block A 11 and the locking block B 12, so as to unlock the second rail 2 and the first rail 1.
[0033] The figure is a structural diagram of the front locking device in the present embodiment. As shown in the figure, Figure 1 and Figure 3 Further, the front locking device comprises a sliding seat 13, and the locking block B12 is slidable in a sliding channel of the sliding seat 13. The protrusion 21 and the pushing surface 151 can contact and push the locking block B12 from the front end of the sliding channel. Specifically, the sliding seat 13 comprises a first protrusion 131 and a second protrusion 132 extending from the outer side of the first rail 1, and the first protrusion 131 and the second protrusion 132 have a gap with the first rail 1 for the pushing surface 151 to extend into, so that the sliding track of the pushing rod 15 does not overlap with the sliding track of the protrusion 21. The first protrusion 131 and the second protrusion 132 are spaced apart to form the sliding channel perpendicular to the moving direction of the sliding rail. The sliding seat 13 further comprises a waist-shaped hole 133, a rivet 134 and the elastic piece 17. The waist-shaped hole 133 is vertically arranged on the first rail 1 and corresponds to the middle part of the sliding channel. The rivet 134 is riveted with the locking block B12 through the waist-shaped hole 133 and is slidable in the waist-shaped hole 133. The elastic piece 17 is fixed to the outer side of the first rail 1 and elastically contacts the upper end of the locking block B12. Specifically, the rivet 134 has a step part 135 on the upper end, the step part 135 extends through the waist-shaped hole 133 and protrudes from the outer side of the first rail 1, and abuts against the inner side surface of the locking block B12 to pad the gap for the pushing surface 151 to extend into. The lower end of the locking block B12 is a slope, and the edge close to the locking block A11 is lower, and the edge far from the locking block A11 is higher. The pushing surface 151 is a slope arranged on the rear side of the upper end of the pushing rod 15, the edge close to the locking block A11 is lower, and the edge far from the locking block A11 is higher, and the slope contacts and pushes the rivet 134.
[0034] Further, the pushing block 14 is connected with the first rail 1 through the compression spring 16 at the rear end, and the compression spring 16 can push the pushing block 14 to reset when the pushing block 14 is loosened.
[0035] In the working process of the embodiment, the first rail 1 is in the fully closed state, the second rail 2 is in the fully closed state, the pushing block 14 is in the fully closed state, the protrusion 21 is in the fully closed state, the locking block B12 is in the fully closed state, and the elastic piece 17 is in the fully closed state.
[0036] Figure 4 The figure shows the fully extended state of the sliding rail in the embodiment of the application. Figure 5 The figure shows the fully extended state of the sliding rail in the embodiment of the application. Figure 5 The figure shows the fully extended state of the sliding rail in the embodiment of the application. Figure 4 The figure shows the fully extended state of the sliding rail in the embodiment of the application. Figure 5 The figure shows the fully extended state of the sliding rail in the embodiment of the application. The figure shows the fully extended state of the sliding rail in the embodiment of the application.
[0037] The figure shows the fully extended state of the sliding rail in the embodiment of the application. Figure 6 The figure shows the fully closed state of the sliding rail in the embodiment of the application. Figure 5 The figure shows the fully closed state of the sliding rail in the embodiment of the application. Figure 6When the push block 14 is pressed, the push rod 15 is pushed, the pushing surface 151 contacts the surface of the stepped portion 135 of the rivet 134, the lock block B12 is pushed towards the one end of the elastic sheet 17, the elastic sheet 17 is pressed, at this time, the first rail 1 is pushed, the protrusion 21 clamped between the lock block A11 and the lock block B12 is moved out of the position between the lock block A11 and the lock block B12, the second rail 2 and the first rail 1 are unlocked, and then the elastic sheet 17 resets to push the lock block B12 back to the original position, and the slide rail can continue to close.
[0038] In the embodiment, by installing the front locking device on the slide rail, the protrusion 21 can be clamped between the lock block A11 and the lock block B12 when the slide rail is fully pulled out, and the second rail 2 and the first rail 1 can be automatically locked. During the pushing of the slide rail, the push rod 15 is pushed by pressing the push block 14, the push rod 15 pushes away the lock block B12, the protrusion 21 is moved out of the position between the lock block A11 and the lock block B12, and the second rail 2 and the first rail 1 can be unlocked. The front locking device has a simple structure and is convenient to use.
[0039] Second embodiment:
[0040] The embodiment discloses a slide rail assembly provided with the front locking device of the first embodiment.
[0041] The slide rail assembly comprises a slide rail, the slide rail comprises a first rail 1, a second rail 2 slidable relative to the first rail 1, and a third rail 3 slidable relative to the second rail 2. For example, the first rail 1 is an inner rail, the second rail 2 is a middle rail, and the third rail 3 is an outer rail. The inner rail is installed on the middle rail through a middle rail holder 4, and the middle rail is installed on the outer rail through an outer rail holder 5.
[0042] In the embodiment, by installing the front locking device on the slide rail assembly, the stable locking state between the rails can be ensured even when the slide rail is fully pulled out, and the stability of the slide rail in use is further improved. Meanwhile, even when the slide rail is fully pulled open, the situation that the rails are pulled out can be avoided, and the slide rail is particularly suitable for multi-section slide rails.
[0043] Any combination of the technical features of the above-mentioned embodiments can be made, and for the sake of brevity, all possible combinations of the technical features in the above-mentioned embodiments are not described, however, as long as the combination of the technical features does not exist, it should be considered that it is within the scope of the present disclosure.
[0044] The above-described embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but can not therefore be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled person in the art, without departing from the utility model concept, several modifications and improvements can be made, which belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.
Claims
1. A front locking device, characterized in that A front locking device for a slide rail, the slide rail comprising a first rail and a second rail slidable relative to the first rail; the front locking device comprising: a protrusion disposed at a front end of an inner side of the second rail; a lock block A disposed at a middle of an outer side of the first rail; a lock block B disposed at a middle of an outer side of the first rail and slidable relative to the first rail in a direction perpendicular to the movement of the slide rail; when the first rail is fully pulled out of the second rail, the protrusion contacts the lock block B and can be clamped between the lock block A and the lock block B after pushing the lock block B away, so that the second rail is locked with the first rail.
2. The front lock device according to claim 1, characterized in that The front locking device further comprises: a push block disposed at a front end of an outer side of the first rail and slidable in a direction parallel to the movement of the slide rail; a push rod with a front end fixed to the push block and a rear end provided with a pushing surface; wherein pushing the push block towards the closing direction of the slide rail causes the push block to slide the push rod towards the rear end, and the pushing surface pushes the lock block B away so that the protrusion is disengaged from between the lock block A and the lock block B, thereby unlocking the second rail from the first rail.
3. The front lock device according to claim 2, characterized in that: The front locking device comprises a sliding seat, and the lock block B is slidable in a slide way of the sliding seat; the protrusion and the pushing surface can contact and push the lock block B from a front end of the slide way.
4. The front lock device according to claim 3, characterized in that: The sliding seat comprises a first boss and a second boss extending from an outer side of the first rail, and the first boss and the second boss have a gap between the first boss and the second boss and the first rail for the pushing surface to extend into, and the first boss and the second boss are spaced apart to form a slide way perpendicular to the movement direction of the slide rail; the sliding seat further comprises: a waist-shaped hole vertically formed on the first rail and positioned corresponding to a middle of the slide way; a rivet penetrating through the waist-shaped hole and riveted with the lock block B, the rivet being slidable in the waist-shaped hole; a spring piece fixed to an outer side of the first rail and elastically contacting a top end of the lock block B.
5. The front lock device according to claim 4, characterized in that: The outer side of the rivet has a step portion, and the step portion penetrates through the waist-shaped hole and protrudes out of the outer side of the first rail.
6. The front lock device of claim 5, wherein: The pushing surface is an inclined surface provided at a rear side of a top end of the push rod, the inclined surface being lower near an edge of the lock block A and higher away from the edge of the lock block A, and the inclined surface contacts the step portion and pushes the rivet.
7. The front lock device of claim 2, wherein: A compression spring is connected between the rear end of the push block and the first rail.
8. A slide rail assembly, characterized by, A slide rail assembly comprising a slide rail, the slide rail comprising a first rail, a second rail slidable relative to the first rail, and a third rail slidable relative to the second rail, is installed with the front locking device according to any one of claims 1-7.