CN215304220U - Clamping block and drawer slide rail assembly - Google Patents

Abstract

The utility model relates to the technical field of sliding rails and discloses a clamping block and a drawer sliding rail assembly, wherein the clamping block comprises a body, the body is provided with a first elastic part, the first elastic part is provided with a resisting surface for resisting the tail end of a middle rail, the first elastic part is provided with a buffer groove, and the buffer groove is adjacently arranged on the resisting surface; the body is also provided with a second elastic part which is used for tightly abutting against the side wall of the track of the inner rail. When the tail end of the middle rail collides with the resisting surface, the deformation part absorbs the kinetic energy of the middle rail to generate elastic deformation and moves towards one side of the buffer groove, and the kinetic energy of the middle rail is absorbed by the movement of the deformation part in the buffer groove, so that the abrasion of the first elastic part is effectively avoided; the second elastic part is tightly propped against the side wall of the track of the inner rail, so that the body forms a compression force on the side wall of the track of the inner rail, the static inner rail and the clamping block are limited to move relatively, and the drawer is prevented from being automatically pulled out after the cabinet body is vibrated.

Description

Clamping block and drawer slide rail assembly

Technical Field

The utility model relates to the technical field of sliding rails, in particular to a clamping block and a drawer sliding rail assembly.

Background

The drawer slide rail is a hardware connecting component which is fixed on a cabinet body of furniture and is used for the in and out movement of a drawer or a cabinet plate of the furniture. Traditional drawer slide rail comprises the support, the well rail that has the spout and inlay the interior rail of dress in the spout, and the support is used for fixing on the cabinet body, and the support has the mounting groove that extends along its length direction, and well rail inlays the dress and can be in the mounting groove straight line back and forth movement, and the interior rail is used for connecting the drawer, and the interior rail can be in the spout straight line back and forth movement. Therefore, the drawer or the cabinet plate is pulled out or retracted on the cabinet body through the drawer sliding rail. However, when the drawer is in a retracted state, if the cabinet is vibrated, the drawer is easily pulled out automatically, which may cause inconvenience in use.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a clamping block to prevent a drawer slide rail in the prior art from being automatically pulled out in a retraction state, so that the reliability and the convenience of the use of a drawer are improved. In addition, the utility model also provides a drawer slide rail assembly applying the clamping block.

In order to achieve the above object, the present invention provides a clamping block for being disposed in a mounting groove of a support, including a body, the body having a first elastic portion, the first elastic portion having a resisting surface for resisting the end of an inner rail, the first elastic portion being provided with a buffer groove, and the buffer groove being adjacent to the resisting surface;

the body is also provided with a second elastic part which is used for tightly abutting against the side wall of the track of the inner rail.

Further, in a horizontal cross section, the abutment surface is a first arc.

Furthermore, a plurality of convex ribs arranged at intervals are arranged on the resisting surface.

Furthermore, the buffer groove is provided with a first buffer surface and a second buffer surface which are parallel to the resisting surface; the first buffering surface is provided with a first protruding part, and the second buffering surface is provided with a second protruding part corresponding to the first protruding part.

Furthermore, the number of the second elastic parts is two, and the two second elastic parts are respectively located on two sides of the first elastic part.

Further, the second elastic part is provided with a clamping surface which is attached to the side wall of the track of the inner rail; in a horizontal cross section, the clamping surface is a second arc line.

Furthermore, the second elastic part is provided with a buffer hole, and the buffer hole is adjacent to the clamping surface.

Furthermore, the inner side wall of the buffer hole is provided with a pit facing the clamping surface.

Furthermore, the central region of the body is provided with an embedded groove used for being embedded on the support.

Furthermore, the inner side wall of the embedding groove is provided with a connecting groove.

Further, the connecting groove has a connecting end facing the clamping face; the connecting end is communicated with the buffer hole, and the connecting end extends into the second elastic part.

In order to achieve the above object, the present invention further provides a drawer slide assembly, comprising a support with an installation groove, a middle rail with a sliding groove, and an inner rail embedded in the sliding groove, wherein the middle rail is embedded in the installation groove and can linearly reciprocate in the installation groove, and further comprising the clamping block, the clamping block is arranged in the installation groove;

when the tail end of the middle rail is abutted to the abutting surface, the first elastic part is elastically deformed, and the second elastic part is elastically deformed and abuts against the side wall of the inner rail.

Compared with the prior art, the clamping block provided by the embodiment of the utility model has the beneficial effects that:

the clamping block is arranged in the mounting groove of the support, when the drawer is retracted, the inner rail and the middle rail slide towards the clamping block under the action of external force, so that the tail end of the middle rail can be abutted to the abutting surface of the first elastic part of the clamping block, and the first elastic part forms a blocking force on the middle rail to limit the middle rail to further slide so as to achieve the purpose of braking. The first elastic part absorbs the kinetic energy of the middle rail and the inner rail in the braking process through the elastic deformation of the first elastic part, the problem that the tail end of the existing middle rail is easy to damage due to rigid braking is solved by an elastic buffering braking mode, and the service life of the middle rail is prolonged.

The buffer slot has been seted up on first elastic component, the buffer slot is close to the face of keeping out for be formed with the deformation portion of certain thickness between face of keeping out and the buffer slot, when the middle rail end collided the face of keeping out, the kinetic energy that the rail took place elastic deformation and moved towards buffer slot one side in the deformation portion absorption middle rail, utilize the kinetic energy that the removal of deformation portion in the buffer slot absorbed middle rail, improve speed reduction efficiency and buffering effect, effectively avoid first elastic component wearing and tearing simultaneously, improve the life of first elastic component.

Simultaneously, at the in-process that first elastic component centering rail brakies, the second elastic component supports the track lateral wall to the inner rail tightly, makes the body be formed with the pressure to the track lateral wall of inner rail, and the relative motion takes place for the interior rail that the restriction is static and the chucking piece for when the drawer slide rail is located the state of withdrawing, inner rail and chucking piece chucking each other avoid the cabinet body to receive the vibration back drawer can automatic pull out, improve reliability and the convenience that the drawer used.

Drawings

FIG. 1 is a first structural schematic diagram of a clamping block of the present invention;

FIG. 2 is a second structural view of the clamping block of the present invention;

FIG. 3 is a third structural view of the clamping block of the present invention;

FIG. 4 is a fourth construction of the clamping block of the present invention;

FIG. 5 is a cross-sectional view of the first half of FIG. 4;

FIG. 6 is a cross-sectional view of the second half of FIG. 4;

FIG. 7 is a cross-sectional view of the third half of FIG. 4;

FIG. 8 is a partial schematic view of the end of the holder of the present invention;

FIG. 9 is a schematic structural view of the drawer slide assembly of the present invention;

in the figure, the position of the upper end of the main shaft,

1-a clamping block;

11-a first elastic part, 111-a resisting surface, 112-a buffer groove, 113-a deformation part, 114-a convex rib, 115-a first protrusion part, 116-a second protrusion part;

12-a second elastic part, 121-a clamping surface, 122-a buffer hole and 123-a pit;

13-embedded groove, 131-connecting groove and 131 a-connecting end;

2-support, 21-mounting groove, 22-mounting block;

3-middle rail, 31-sliding groove;

4-inner rail.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Referring to fig. 9, according to the general structure of the drawer slide rail in the prior art, it can be understood that the drawer slide rail assembly of the present invention includes a support 2, a middle rail 3 and an inner rail 4, wherein the support 2, the middle rail 3 and the inner rail 4 are all linear and long, the support 2 is usually fixed on a side plate of a cabinet by using screws or bolts, the support 2 has a mounting groove 21 arranged along the length direction thereof, and the middle rail 3 can be embedded in the mounting groove 21 and can linearly reciprocate in the mounting groove 21. The middle rail 3 has a slide groove 31 structure in which the opening of the slide groove 31 is oriented in the same direction as the opening of the mounting groove 21 so that the inner rail 4 can be fitted into the slide groove 31 and linearly reciprocate along the slide groove 31. Meanwhile, the inner rail 4 also has a rail structure, and the opening direction of the rail structure is opposite to the opening direction of the sliding groove 31 of the middle rail 3, so that the drawer or the cabinet board can be fixed at the back of the rail of the inner rail 4, and the drawer or the cabinet board can be pulled out or retracted from the cabinet body in two sections through the inner rail 4 and the middle rail 3. It should be further noted that the linear reciprocating motion of the middle rail 3 in the mounting groove 21 and the linear reciprocating motion of the inner rail 4 in the sliding groove 31 can be realized by using balls or pulleys, which are not limited herein.

Based on above-mentioned current drawer slide rail structure, when the drawer slide rail is located the state of withdrawing, if the cabinet body receives the vibration in the use, interior rail 4 or well rail 3 receive easy automatic roll-off after the vibration, lead to the drawer can pull out automatically, have awkward condition.

Therefore, referring to fig. 9, the present invention provides a clamping block 1, which is disposed in the mounting groove 21 of the support 2, when the drawer slide rail is retracted, the clamping block 1 can brake the middle rail 3 and the inner rail 4 and clamp the inner rail 4 on the support 2, so as to prevent the inner rail 4 from moving naturally in a stationary state, and to limit the drawer from being pulled out automatically.

Specifically, referring to fig. 1, the clamping block 1 of the present invention includes a body, the body has a first elastic portion 11, the first elastic portion 11 has a blocking surface 111 for blocking the end of the middle rail 3, the first elastic portion 11 is provided with a buffer slot 112, and the buffer slot 112 is adjacent to the blocking surface 111; the body is also provided with a second elastic part 12, and the second elastic part 12 is used for abutting against the track side wall of the inner track 4.

It should be noted that, in the present invention, the end of the inner rail 4, the end of the middle rail 3 and the end of the support 2 refer to the end of the drawer or the cabinet board away from the user during the use, and the head end of the middle rail and the head end of the inner rail refer to the end of the drawer or the cabinet board close to the user during the use. According to the actual use condition, chucking piece 1 generally sets up at the end of support 2 or is close to the end setting of support 2, can reduce the overall length of support 2, makes interior rail 4 and well rail 3 can accomplish the storage of at utmost simultaneously, avoids the front end protrusion of drawer or cabinet board to come.

The first elastic portion 11 and the second elastic portion 12 are made of elastic material, such as soft synthetic resin like silica gel and rubber, and can elastically deform and generate a certain elastic force under the action of external force.

The buffer slot 112 may penetrate the top and the bottom of the first elastic portion 11 to form a buffer gap, or may be a slot structure disposed at the top of the first elastic portion 11, such that a deformation portion 113 with a certain thickness is formed between the buffer slot 112 and the clamping surface 121, and the deformation portion 113 is used for absorbing the kinetic energy of the end of the middle rail 3 to achieve the braking purpose. For convenience of processing, the buffer groove 112 preferably penetrates the top and bottom of the first elastic part 11.

When the drawer is retracted, the inner rail 4 and the middle rail 3 slide towards the clamping block 1 under the action of external force, so that the tail end of the middle rail 3 can abut against the abutting surface 111 of the first elastic part 11 of the clamping block 1, the first elastic part 11 forms a blocking force on the middle rail 3, and the middle rail 3 is limited to further slide to achieve the braking purpose. The first elastic part 11 absorbs the kinetic energy of the middle rail 3 and the inner rail 4 in the braking process through the elastic deformation of the first elastic part, the problem that the tail end of the middle rail 3 is easy to damage due to rigid braking is solved in an elastic buffering braking mode, and the service life of the middle rail 3 is prolonged.

The buffer groove 112 is formed in the first elastic portion 11, the buffer groove 112 is close to the abutting surface 111, a deformation portion 113 with a certain thickness is formed between the abutting surface 111 and the buffer groove 112, when the end of the middle rail 3 collides with the abutting surface, the deformation portion 113 absorbs the kinetic energy of the middle rail 3 to generate elastic deformation and move towards one side of the buffer groove 112, partial kinetic energy of the inner rail 4 is absorbed by the movement of the deformation portion 113 in the buffer groove 112, the speed reduction efficiency and the buffering effect are improved, meanwhile, the abrasion of the first elastic portion 11 is effectively avoided, and the service life of the first elastic portion 11 is prolonged.

Meanwhile, in or after the process that the first elastic part 11 brakes the middle rail 3, the second elastic part 12 abuts against the side wall of the rail of the inner rail 4, so that the body forms compression force on the side wall of the rail of the inner rail 4, and the static inner rail 4 and the clamping block 1 are limited to move relatively, so that when the drawer slide rail is in a withdrawing state, the inner rail 4 and the clamping block 1 are clamped with each other, the drawer is prevented from being automatically pulled out after the cabinet body is vibrated, and the reliability and the convenience of the use of the drawer are improved.

Further, referring to fig. 1, in the horizontal cross section, the resisting surface 111 is a first arc line. The arc-shaped abutting surface 111 can increase the contact area between the tail end of the middle rail 3 and the abutting surface 111, so that the kinetic energy of the middle rail 3 can be uniformly distributed on the abutting surface 111, the kinetic energy of the middle rail 3 received by the first elastic part 11 is uniformly dispersed, the buffering effect of the first elastic part 11 on the tail end of the middle rail 3 is effectively improved, meanwhile, the phenomenon that the first elastic part 11 is partially abraded due to too large kinetic energy is avoided, and the service life of the clamping block 1 is prolonged. In order to further enhance the buffering and decelerating effect of the first elastic portion 11 on the middle rail 3, the center point of the first arc is located in the central region of the main body, so that the first elastic portion 11 is convex, and the kinetic energy of the middle rail 3 is absorbed more effectively. Still further, the first arc may preferably be a minor arc.

In one embodiment, referring to fig. 2, the blocking surface 111 is provided with a plurality of ribs 114 disposed at intervals. The rib 114 is preferably disposed in a vertical direction such that the outer surface of the rib 114 is in contact with the distal end surface of the middle rail 3. Because the middle rail 3 is a sheet metal part, that is, the cross-sectional area of the tail end of the middle rail 3 is small, when the tail end of the middle rail 3 contacts the abutting surface 111, the pressure applied to the abutting surface 111 is large, so that scratches are easily formed on the abutting surface 111, the surface quality of the abutting surface 111 is damaged, and abrasion of the first elastic part 11 is caused. The rib 114 forms a barrier layer to prevent the tail end of the middle rail 3 from directly contacting the abutting surface 111, and the kinetic energy of the middle rail 3 is transmitted to the contacting surface through the rib 114 to cause the deformation part 113 to elastically deform, so as to prevent the surface of the abutting surface 111 from being worn. Further, the rib 114 has elasticity, so as to avoid rigid abrasion of the middle rail 3 and overall abrasion of the clamping block 1.

In another embodiment, referring to fig. 2-3, the buffer slot 112 has a first buffer surface and a second buffer surface parallel to the resisting surface 111; the first cushioning surface is provided with first protrusions 115, and the second cushioning surface is provided with second protrusions 116 corresponding to the first protrusions 115. The number of the first protrusions 115 may be multiple, the multiple first protrusions 115 are connected in sequence to form a wave structure, the number of the second protrusions 116 corresponds to the number of the first protrusions 115, and the first protrusions 115 can abut against the second protrusions 11 6. When the deformation part 113 moves towards the buffer groove 112, the first protrusion part 115 and the second protrusion part 116 contact with each other and deform, and the kinetic energy of the middle rail 3 part is absorbed by the first protrusion part 115 and the second protrusion part 116, so that the buffer and deceleration effect of the deformation part 113 on the middle rail 3 is enhanced. Further, the first protrusion portion 115 and the second protrusion portion 116 are both elastic, so as to avoid abrasion of the first elastic portion 11.

Further, referring to fig. 1, the second elastic portion 12 has a clamping surface 121 for adhering to the side wall of the inner rail 4; in horizontal cross-section, the gripping surface 121 is a second arc. In the process that the first elastic part 11 buffers and decelerates the tail end of the middle rail 3, the rail side wall of the inner rail 4 is in contact with the clamping surface 121, the rail side wall of the inner rail 4 forms a certain acting force on the clamping surface 121 and enables the second elastic part 12 to elastically deform, the deformed second elastic part 12 drives the clamping surface 121 to be tightly attached to the rail side wall of the inner rail 4, a compression force is formed on the rail side wall of the inner rail 4, the friction force between the inner rail 4 and the clamping block 1 is increased, and then the static inner rail 4 and the clamping block 1 are limited to move relatively. Because the moving direction of the track side wall of the inner rail 4 is tangent or parallel to the clamping surface 121 in the braking process of the middle rail 3, the arc-shaped clamping surface 121 can reduce the contact area between the clamping surface 121 and the track side wall of the inner rail 4, and increase the pressure of the second elastic part 12 on the track side wall of the inner rail 4, so as to enhance the clamping effect of the clamping block 1 on the inner rail 4. Still further, the second arc may preferably be a major arc.

Further, referring to fig. 4, the second elastic portion 12 is provided with a buffer hole 122, and the buffer hole 122 is adjacent to the fastening surface 121. The buffer hole 122 preferably penetrates the top and bottom of the second elastic portion 12, or a non-penetrating section is left at the middle or end of the buffer hole 122. When the part of the second elastic part 12 between the clamping surface 121 and the buffer hole 122 is deformed, the part can move towards one side of the buffer hole 122, and the buffer hole 122 is used for absorbing the local acting force of the side wall of the inner rail 4 to the second elastic part 12, so that the surface of the clamping surface 121 is prevented from being worn.

Referring to fig. 5, the inner side wall of the buffer hole 122 is provided with a concave recess 123 facing the clamping surface 121, the concave recess 123 increases the moving space of the second elastic portion 12 between the clamping surface 121 and the buffer hole 122, and increases the absorption effect of the acting force acting on the second elastic portion 12, so as to improve the load-bearing capacity and the wear-resisting capacity of the second elastic portion 12.

Further, as a fixing manner of the clamping block 1 on the support 2, please refer to fig. 1-4, the central region of the body is provided with an embedding groove 13 for embedding on the support 2. The embedding groove 13 preferably penetrates through the top and the bottom of the body, and the trouble of distinguishing the positive side and the negative side of the clamping block 1 can be avoided during installation. Referring to fig. 8, the end of the mounting groove 21 of the support 2 is provided with a mounting block 22 which is embedded in the embedded groove 13, the mounting block 22 may be formed by bending the end of the support 2, and the clamping block 1 is fixed on the support 2 by inserting the embedded groove 13 into the mounting block 22. Meanwhile, the fixing mode is detachable, so that the worn clamping block 1 can be replaced conveniently. It should be noted that the clamping block 1 can also be fixed on the support 2 by gluing or screwing, and the description is omitted here.

Based on the structure that the clamping block 1 has the embedded groove 13, please refer to fig. 6, the inner side wall of the embedded groove 13 is provided with a connecting groove 131. The inside of the body is spanned to connecting groove 131, and connecting groove 131 can further increase the deformability of second elastic part 12 to the improvement is avoided second elastic part 12 to take place wearing and tearing easily, improves chucking block 1's life. Meanwhile, the connecting groove 131 can further increase the deformation capacity of the first elastic part 11, so that the first elastic part 11 is prevented from being easily worn, and the service life of the clamping block 1 is prolonged. Still further, referring to fig. 7, one end of the connecting slot 131 facing the fastening surface 121 is a connecting end 131 a. In the case where the clamping block 1 does not have the buffer hole 122, the connection end 131a extends into the second elastic part 12 to form a dimple structure. When the chucking block 1 is provided with the buffer hole 122, the connecting end 131a is communicated with the buffer hole 122, and the connecting end 131a extends into the second elastic portion 12 to increase the deformation capability of the second elastic portion 12 to the maximum extent, thereby improving the service life of the chucking block 1.

Referring to fig. 1-4, based on the structure that the clamping block 1 has the first elastic portion 11 and the second elastic portion 12, since the track of the inner rail 4 has two opposite side walls, the number of the second elastic portions 12 of the present invention can be two, the two second elastic portions 12 are respectively located at two sides of the first elastic portion 11, and the two second elastic portions 12 can respectively abut against two side walls of the track of the inner rail 4, so as to generate a pressing force on both opposite side walls of the track of the inner rail 4, thereby improving the clamping effect of the clamping block 1 on the inner rail 4. Still further, in order to avoid the trouble of distinguishing the obverse and reverse sides of the clamping block 1 when the clamping block 1 is installed, so as to improve the assembly efficiency, the number of the first elastic parts 11 is also two, the two first elastic parts 11 are arranged symmetrically with respect to the body axis, and meanwhile, after one of the first elastic parts 11 is worn in the use process, the installation direction of the clamping block 1 can be changed to adopt the other first elastic part 11 to realize the braking purpose of the inner rail 4. Still further, the clamping surface 121 is smoothly connected with the resisting surface 111, that is, the second elastic portion 12 is connected with the first elastic portion 11 to form a whole, which is beneficial to improving the compactness of the whole structure of the clamping block 1, so that the whole clamping block 1 is in an axisymmetric structure.

Still further, considering the convenience of the processing and manufacturing of the clamping block 1 and the braking effect and the clamping effect of the whole clamping block 1 on the inner rail 4, the body is an integrated piece made of elastic materials and can be quickly prepared through an injection molding process.

In addition, referring to fig. 9, the utility model also discloses a drawer slide rail assembly adopting the clamping block 1, wherein the clamping block 1 is arranged in the mounting groove 21; when the tail end of the middle rail 3 is abutted to the abutting surface 111, the first elastic part 11 is elastically deformed, and the kinetic energy of the inner rail 4 is absorbed by the elastic deformation of the first elastic part 11, so that the aim of braking the middle rail 3 is fulfilled; the second elastic part 12 elastically deforms and abuts against the side wall of the track of the inner rail 4, the second elastic part 12 generates pressing force on the side wall of the track of the inner rail 4 to limit the static inner rail 4 and the clamping block 1 to move relatively, and therefore the drawer slide rail in the prior art is prevented from being automatically pulled out when being in a withdrawing state, and the use reliability and convenience of the drawer are improved.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (12)

1. The clamping block is arranged in an installation groove of a support and is characterized by comprising a body, wherein the body is provided with a first elastic part, the first elastic part is provided with a resisting surface for resisting the tail end of a middle rail, the first elastic part is provided with a buffer groove, and the buffer groove is adjacently arranged on the resisting surface;

the body is also provided with a second elastic part which is used for tightly abutting against the side wall of the track of the inner rail.

2. The clamping block of claim 1, wherein, in horizontal cross-section, said abutment surface is a first arc.

3. The clamping block of claim 1, wherein the retaining surface has a plurality of spaced ribs.

4. The clamping block of claim 1, wherein said buffer slot has a first buffer surface and a second buffer surface parallel to said abutment surface; the first buffering surface is provided with a first protruding part, and the second buffering surface is provided with a second protruding part corresponding to the first protruding part.

5. The grip block of claim 1, wherein the number of the second elastic portions is two, and the two second elastic portions are respectively located on both sides of the first elastic portion.

6. The grip block of claim 1, wherein the second resilient portion has a gripping surface for engaging a rail side wall of the inner rail; in a horizontal cross section, the clamping surface is a second arc line.

7. The clamping block of claim 6, wherein the second resilient portion defines a relief hole, the relief hole being disposed adjacent to the clamping surface.

8. The clamping block of claim 7, wherein an inner sidewall of said relief hole is provided with a recess facing said clamping surface.

9. The clamping block according to claim 7, wherein the central region of the body is provided with an insertion groove for insertion into the holder.

10. The clamping block according to claim 9, wherein the inner side wall of the insertion groove is provided with a connection groove.

11. The clamping block of claim 10, wherein said attachment slot has an attachment end facing said clamping face; the connecting end is communicated with the buffer hole, and the connecting end extends into the second elastic part.

12. A drawer slide assembly comprising a holder having a mounting groove, a middle rail having a slide groove, and an inner rail fitted in the slide groove, the middle rail being fitted in the mounting groove and linearly reciprocated in the mounting groove, characterized by further comprising a clamping block according to any one of claims 1 to 11, the clamping block being disposed in the mounting groove;

when the tail end of the middle rail is abutted to the abutting surface, the first elastic part is elastically deformed, and the second elastic part is elastically deformed and abuts against the side wall of the inner rail.

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