A guide rail with adjustable locking force

Abstract

The present invention provides a guide rail with adjustable locking force, comprising an inner rail for driving the drawer to slide, an outer rail fixed on a cabinet, a middle rail connecting the inner rail and the outer rail, an inner bead nest and an outer bead nest supporting the inner rail and the middle rail to slide, the inner side walls of the outer rail are respectively provided with locking convex edges, the inner rail is provided with an adjustable locking force device, the adjustable locking force device comprises an adjustable base and a locking force shifting block, the adjustable base is mounted on the inner rail, and both sides of the adjustable base are respectively provided with elastic buckles for locking or separating with the locking convex edges as the drawer is opened and closed, the inner side of the elastic buckle is provided with at least two levels of locking force gears, the locking force shifting block is slidably mounted on the adjustable base and buckled with the locking force gears therein, so that the distance between the elastic buckles becomes larger or smaller. The structure is simple, stable and reliable, and the locking force can be adjusted as needed in specific use occasions, the applicability is strong, and the product quality and competitiveness are improved.

Description

Technical Field

[0001] The invention relates to the technical field of drawer guide rails, in particular to a guide rail with adjustable locking force. Background Art

[0002] At present, there are many types of drawer rails on the market, such as ordinary, buffer, and self-locking. Ordinary rails achieve the locking function by inserting the rubber stopper of the elastic body into the tail of the inner rail; buffer rails and self-locking rails achieve the locking function through springs. However, no matter which type of rail, the locking force does not change much, and it can basically be considered fixed. For this reason, rails with fixed locking force cannot meet the special needs of customers, and the locking force needs to be adjusted in specific usage occasions. Therefore, in order to meet this special need of customers, it is necessary to design a rail with adjustable locking force function. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a guide rail with adjustable locking force, which has a simple structure, is stable and reliable, and can adjust the locking force as needed in specific usage occasions, has strong applicability, and improves product quality and competitiveness.

[0004] The inventive objective of the present invention is achieved as follows: a guide rail with adjustable locking force, comprising an inner rail for driving a drawer to slide, an outer rail fixed on a cabinet body, a middle rail connecting the inner rail and the outer rail, an inner bead nest and an outer bead nest supporting the inner rail and the middle rail to slide, wherein the inner side walls of the outer rail are respectively provided with locking convex edges, the inner rail is provided with an adjustable locking force device, the adjustable locking force device comprises an adjustable base and a locking force shifting block, the adjustable base is installed on the inner rail, and the two sides of the adjustable base are respectively provided with elastic buckles for locking or separating with the locking convex edges as the drawer is opened and closed, the inner side of the elastic buckle is provided with at least two levels of locking force gears, the locking force shifting block is slidably mounted on the adjustable base and buckled with the locking force gears therein to increase or decrease the distance between the elastic buckles.

[0005] According to the above optimization, the adjustable base is provided with a limit block for limiting the sliding position of the locking force block, and the limit block can be in contact with the middle rail as the inner rail closes.

[0006] According to the above optimization, the middle rail is equipped with a stopper for limiting the stroke of the inner bead nest and the closing distance of the inner rail, and the stopper contacts or separates with the limit shift block during opening and closing.

[0007] According to the above optimization, the adjustable base is provided with an insert, and the locking force shift block is provided with a snap-fitting convex edge portion for snapping with the locking force gear position and a guide groove for slidingly embedding with the insert, the snap-fitting convex edge portion is distributed on the left and right sides of the locking force shift block, and the guide groove is arranged at the bottom of the locking force shift block.

[0008] According to the above optimization, the locking force gear is provided with a first-level locking force gear, a second-level locking force gear, and a third-level locking force gear arranged on the inner side of the elastic buckle along the closing direction of the inner rail, and the locking force shift block is pushed inward to engage with the first-level locking force gear, the second-level locking force gear or the third-level locking force gear so that the distance between the elastic buckles gradually increases.

[0009] According to the above optimization, the inner rail is equipped with a rubber for limiting the stretching length.

[0010] According to the above optimization, the front end of the outer rail is provided with a front stopper rubber for limiting the travel of the middle rail.

[0011] According to the above optimization, the outer rail is provided with limit stops for limiting the opening and closing running distance of the middle rail, and the limit stops are arranged at the front and rear of the outer rail. The middle rail is provided with bending stops for moving between the limit stops, and the bending stops are installed with buffer stops for anti-collision and buffering functions.

[0012] The advantages of the present invention are: by adopting the guide rail with adjustable locking force of the present structure, when the locking force shift block is buckled in the first locking force gear, the locking force is the initial locking force. According to the locking force required by the customer, the locking force shift block is pushed forward to the second locking force gear and the third locking force gear. At this time, the widest distance between the elastic buckles increases with the change of the position of the locking force shift block, and the embedding distance between the elastic buckles and the locking force convex edge becomes larger, thereby achieving the need to adjust the locking force in specific usage occasions. The structure is simple, stable and reliable, and has strong applicability, which increases product diversity, enriches product types, and improves product quality and competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Attached Figure 1 This is a schematic diagram of the structure of a preferred embodiment of the present invention in an open state.

[0014] Attached Figure 2 It is a cross-sectional view of a preferred embodiment of the present invention in an opened state.

[0015] Attached Figure 3 It is an exploded view of a preferred embodiment of the present invention.

[0016] Attached Figure 4 This is an assembly diagram of the locking force adjustable device of a preferred embodiment of the present invention.

[0017] Attached Figure 5 Schematic diagram of the adjustment of the locking force adjustable device according to a preferred embodiment of the present invention.

[0018] Attached Figure 6 The diagram of the use of the locking force adjustable device of the preferred embodiment of the present invention DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] According to the attached Figures 1 to 6 As shown, the guide rail with adjustable locking force of the present invention comprises an inner rail 1 for driving the drawer to slide, an outer rail 2 fixed on the cabinet body, a middle rail 3 connecting the inner rail 1 and the outer rail 2, and an inner bead nest 4 and an outer bead nest 5 supporting the inner rail 1 and the middle rail 3 to slide. Among them, the inner side walls of the outer rail 2 are respectively provided with locking convex edges 6, and the inner rail 1 is provided with an adjustable locking force device. The adjustable locking force device comprises an adjustable base 7 and a locking force shifting block 8. The adjustable base 7 is installed on the inner rail 1, and the two sides of the adjustable base 7 are respectively provided with elastic buckles 9 for locking or separating with the locking convex edges 6 as the drawer is opened and closed. The inner side of the elastic buckle 9 is provided with at least two levels of locking force gears, and the locking force shifting block 8 is slidably mounted on the adjustable base 7 and buckled with the locking force gears therein to increase or decrease the distance between the elastic buckles 9.

[0021] Reference Figures 1 to 6 As shown, in further detail, the locking force gear is provided with a first-level locking force gear 12, a second-level locking force gear 13, and a third-level locking force gear 14 which are arranged on the inner side of the elastic buckle 9 along the closing direction of the inner rail 1, and the locking force shift block 8 is pushed inward to engage with the first-level locking force gear 12, the second-level locking force gear 13 or the third-level locking force gear 14, so that the distance between the elastic buckles 9 gradually increases.

[0022] That is, when the locking force shift block 8 is buckled in the first-level locking force gear 12, the locking force is the initial locking force. According to the locking force required by the customer, the locking force shift block 8 is pushed forward to the second-level locking force gear 13 and the third-level locking force gear 14. At this time, the widest distance between the elastic buckles 9 increases with the position change of the locking force shift block 8, and the embedding distance between the elastic buckle parts 9 and the locking force convex edge 6 becomes larger, thereby achieving the need to adjust the locking force in specific usage scenarios. The structure is simple, stable and reliable.

[0023] It is worth noting that the locking force gear pull of this structure can not only adopt three-level locking force gears, but also adopt four-level, five-level, six-level and other multi-level locking force gears. It has strong applicability, increases product diversity, enriches product types, and improves product quality and competitiveness.

[0024] Reference Figures 1 to 3 As shown, the adjustable base 7 is provided with an insert 71, and the locking force shift block 8 is provided with a snap-fitting convex edge portion 81 for snapping with the locking force gear position and a guide groove 82 for slidingly embedding with the insert 71, the snap-fitting convex edge portion 81 is distributed on the left and right sides of the locking force shift block 8, and the guide groove 82 is provided at the bottom of the locking force shift block 8.

[0025] During assembly, it is only necessary to slide the guide groove 82 onto the insert 71 so that the locking force shifting block 8 can be easily slid into the adjustable base 7 and can be shifted back and forth to be buckled on the locking force gears of different locking forces to adjust the locking force.

[0026] The adjustable base 7 is provided with a limit block 10 for limiting the sliding position of the locking force block 8, and the limit block 10 can contact the middle rail 3 as the inner rail 1 closes. Under the action of the limit block 10, the locking force block 8 is prevented from being disengaged outward, thereby improving the structural reliability.

[0027] Moreover, the middle rail 3 is provided with a stopper 11 for limiting the travel of the inner bead nest 4 and the closing distance of the inner rail 1, and the stopper 11 contacts or separates with the limit shifting block 10 during opening and closing. Under the action of the stopper 11, the noise generated by the collision of the parts is reduced, and the buffering effect is good.

[0028] Reference Figures 1 to 6 As shown, the inner rail 1 is provided with a rubber 15 for limiting the stretching length. The cooperation between the rubber 15 and the stopper 11 can determine the stretching length of the inner rail 1.

[0029] Furthermore, the front end of the outer rail 2 is provided with a front stopper 16 for limiting the travel of the middle rail 3. The outer rail 2 is provided with a limit stop point 17 for limiting the opening and closing running distance of the middle rail 3, and the limit stop point 17 is provided at the front and rear of the outer rail 2. The middle rail 3 is provided with a bending stop point 18 for moving between the limit stop points 17, and the bending stop point 18 is installed with a buffer stopper 19 for anti-collision and buffering.

[0030] Under the action of the front stopper rubber 16 and the buffer stopper rubber 19, the structural stability is enhanced, the buffering effect is improved, the guide rail is prevented from being damaged by impact, the service life is extended, and at the same time, the user's higher life requirements are met, and the product quality and competitiveness are improved.

[0031] The above-mentioned specific embodiments are only specific implementation methods with better effects of the present invention. Any structure that is the same or equivalent to the guide rail with adjustable locking force of the present invention is within the protection scope of the present invention.

Claims

1. A guide rail with adjustable locking force, comprising an inner rail (1) for driving a drawer to slide, an outer rail (2) fixed on a cabinet body, a middle rail (3) connecting the inner rail (1) and the outer rail (2), an inner bead nest (4) and an outer bead nest (5) for supporting the inner rail (1) and the middle rail (3) to slide, characterized in that: The inner side walls of the outer rail (2) are respectively provided with locking convex edges (6), and the inner rail (1) is provided with an adjustable locking device, the adjustable locking device comprising an adjustable base (7) and a locking force shifting block (8), the adjustable base (7) being mounted on the inner rail (1), and both sides of the adjustable base (7) being respectively provided with elastic buckles (9) for locking or separating with the locking convex edges (6) as the drawer is opened or closed, the inner side of the elastic buckle (9) being provided with at least two levels of locking force gears, the locking force shifting block (8) being slidably mounted on the adjustable base (7) and being buckled with the locking force gears therein, so that the distance between the elastic buckles (9) becomes larger or smaller; The adjustable base (7) is provided with a limit block (10) for limiting the sliding position of the locking force block (8), and the limit block (10) can contact the middle rail (3) as the inner rail (1) closes; The adjustable base (7) is provided with an insert (71), the locking force shift block (8) is provided with a buckling convex edge portion (81) for buckling with the locking force shift position and a guide groove (82) for slidingly embedding with the insert (71), the buckling convex edge portion (81) is distributed on the left and right sides of the locking force shift block (8), and the guide groove (82) is provided at the bottom of the locking force shift block (8); The locking force gears are provided with a first locking force gear (12), a second locking force gear (13), and a third locking force gear (14) arranged on the inner side of the elastic buckle (9) along the closing direction of the inner rail (1), and the locking force shift block (8) is pushed inwardly to engage with the first locking force gear (12), the second locking force gear (13), or the third locking force gear (14), so that the distance between the elastic buckles (9) gradually increases.

2. The guide rail with adjustable locking force according to claim 1, characterized in that: The middle rail (3) is provided with a stopper (11) for limiting the travel of the inner bead nest (4) and the closing distance of the inner rail (1), and the stopper (11) contacts or separates from the limit shifting block (10) during opening and closing.

3. The guide rail with adjustable locking force according to claim 1, characterized in that: The inner rail (1) is provided with a rubber strip (15) for limiting the stretching length.

4. The guide rail with adjustable locking force according to claim 1, characterized in that: The front end of the outer rail (2) is provided with a front stopper rubber (16) for limiting the travel of the middle rail (3).

5. The guide rail with adjustable locking force according to claim 4, characterized in that: The outer rail (2) is provided with limit stop points (17) for limiting the opening and closing running distance of the middle rail (3), the limit stop points (17) being arranged at the front and rear of the outer rail (2), the middle rail (3) being provided with bending stop points (18) for moving between the limit stop points (17), the bending stop points (18) being provided with buffer stop rubber (19) for preventing collision and buffering.

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