Cushion pad positioning and mounting structure of lock

Abstract

The utility model relates to a cushion pad positioning and mounting structure of a lock, at least one group of positioning grooves and positioning blocks which are correspondingly arranged are arranged between a lock cover and a cushion pad as well as between the cushion pad and the lock cover, the positioning grooves and the positioning blocks are matched in an inserting manner to form a limiting structure, and when the cushion pad and the lock cover are assembled, the positioning blocks are inserted into the positioning grooves; the groove wall blocks the block body and limits horizontal sliding and rotating displacement of the buffering cushion relative to the lock cover, so that the buffering cushion and the lock cover are fixed into a relatively stable whole, relative movement of the buffering cushion and the lock cover is directly restrained, displacement or falling of the buffering cushion caused by transverse stress generated by frequent rotation of the handle is avoided, and the service life of the handle is prolonged. The connection stability of the cushion pad and the lock cover is remarkably improved, reliable fixation of the lock body and the door body is ensured, the problem that the handle droops due to looseness of the cushion pad is effectively solved, and therefore the overall use stability and durability of the lock are improved.

Description

Technical Field

[0001] This utility model relates to the field of locks, and in particular to a buffer pad positioning and installation structure for locks. Background Technology

[0002] As a core security component of a door, the stability and durability of locks directly affect the user experience. In scenarios such as metal-framed glass doors and wooden doors, locks typically require a buffer pad to connect with the door. This buffer pad not only cushions the rigid contact between the lock body and the door, reducing wear, but also helps to secure the lock body and handle, preventing loosening or displacement due to frequent operation.

[0003] In the prior art, for example, Chinese utility model patent CN217735110U discloses a lock structure for a metal-framed glass door, which uses inner and outer rubber pads to isolate the contact surface between the lock body and the glass door, and provides a certain degree of protection through the soft material of the rubber pads. However, the rubber pad installation structure in this patent still has the following significant defects:

[0004] 1. The rubber pad in this patent is only initially fixed by "the spacer falling into the lock body mounting groove" and "the pad adhering to the glass surface". After long-term use, the lateral stress generated by the frequent rotation of the lock handle can easily cause the rubber pad to slide or fall off along the lock body surface, which cannot guarantee a stable connection between the lock body and the door.

[0005] 2. Because the bonding force between the rubber pad and the glass door relies solely on the friction of the pad, the handle is prone to sagging due to gravity or rotational inertia after long-term use, affecting the closing accuracy and aesthetics of the lock.

[0006] Therefore, the existing lock buffer pad installation structure has problems such as poor stability, insufficient buffering and unloading, and weak anti-sagging ability, which cannot meet the user's needs for long-term stable use of locks. Therefore, there is an urgent need for a lock buffer pad positioning and installation structure with optimized structure to solve the above defects. Summary of the Invention

[0007] The technical problem to be solved by this utility model is to provide a buffer pad positioning and installation structure for locks, addressing the shortcomings of the prior art.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a buffer pad positioning and installation structure for a lock, including a lock cover and a buffer pad, wherein at least one set of corresponding positioning grooves and positioning blocks are provided between the buffer pad and the lock cover, and the positioning grooves and positioning blocks form a limiting structure by interlocking.

[0009] By adopting the above technical solution, a positioning groove and a positioning block are correspondingly set between the buffer pad and the lock cover. The two are connected to form a physical limiting structure. The shape and size of the positioning groove and the positioning block are compatible with each other. When the buffer pad and the lock cover are assembled, the positioning block is inserted into the positioning groove, and the groove wall blocks the block. The limiting structure refers to restricting the horizontal sliding (such as the lateral or longitudinal movement along the surface of the lock cover) and rotational displacement of the buffer pad relative to the lock cover, thereby fixing the buffer pad and the lock cover into a relatively stable whole. Through the connection between the positioning groove and the positioning block, the relative movement of the buffer pad and the lock cover is directly constrained, avoiding the displacement or detachment of the buffer pad caused by the lateral stress generated by the frequent rotation of the handle. This significantly improves the connection stability between the buffer pad and the lock cover. At the same time, this stable connection structure ensures the reliable fixation of the lock body and the door body, effectively reducing the problem of handle sagging caused by the loosening of the buffer pad, thereby improving the overall stability and durability of the lock.

[0010] The aforementioned buffer pad positioning and mounting structure for a lock can be further configured such that: the buffer pad includes a spacer for mounting to the inside of the lock cover and a pad for abutting to the side wall surface of the lock cover, wherein the spacer and the pad are connected and the connection is set in a stepped manner.

[0011] The above technical solution designs the buffer pad into two parts: a spacer and a pad. The spacer is installed on the inside of the lock cover, while the pad adheres to the side wall surface of the lock cover. The two are connected by a stepped joint, where the spacer and pad form a stepped structure with a height difference at the joint. This allows the spacer to penetrate deep into the inside of the lock cover and make tight contact with its internal structure, while the pad covers the outer surface of the lock cover's side wall, creating a double-sided fit. The stepped joint, through the limiting effect of the steps, constrains the relative displacement of the spacer and pad on the lock cover surface. The division of labor and cooperation between the buffer pad and the adhesive pad, as well as the limiting at the stepped connection, ensures that the buffer pad makes effective contact with both the inner side and the side wall surface of the lock cover. This ensures that the spacer pad is stably connected to the internal positioning structure of the lock cover, and that the adhesive pad is tightly fitted to the outer surface of the lock cover. On the other hand, the stepped connection restricts the displacement of the buffer pad along the thickness direction of the lock cover through physical blocking, thereby significantly improving the connection stability between the buffer pad and the lock cover. This prevents the buffer pad from shifting or falling off due to handle rotation or external force, providing a basic support for the long-term stable use of the lock.

[0012] The aforementioned buffer pad positioning and mounting structure for a lock can be further configured such that: the positioning groove is disposed on the spacer, the positioning block is disposed inside the lock cover, and the spacer passes through the lock cover so that the positioning block is inserted into the positioning groove.

[0013] By adopting the above technical solution, through the structural design of setting the positioning groove on the spacer and setting the positioning block on the inside of the lock cover, and by using the assembly method of the spacer being inserted into the lock cover, the positioning block and the positioning groove can form a direct plug-in fit, directly locking the spacer part of the buffer pad to the inside of the lock cover. This effectively restricts the horizontal sliding of the buffer pad along the surface of the lock cover and the rotational displacement around the center of the lock cover, and avoids the buffer pad displacement or falling off caused by the lateral stress generated by the frequent rotation of the handle.

[0014] The aforementioned buffer pad positioning and mounting structure of a lock can be further configured as follows: the positioning block includes a positioning connecting block and a positioning reinforcing part disposed on one side of the positioning connecting block and connected to the side wall of the lock cover; the positioning groove includes a positioning connecting groove that is inserted and engaged with the positioning connecting block and a positioning reinforcing groove that is inserted and engaged with the positioning reinforcing part; and the edge of the spacer is provided with a positioning opening that communicates with the positioning reinforcing groove.

[0015] Using the above technical solution, the positioning connecting block can be circular, triangular, or horizontal stripe-shaped. A hierarchical structure design of the positioning block and positioning groove achieves dual limiting. The positioning block consists of a positioning connecting block responsible for the basic connection and a positioning reinforcement part that connects to the lock cover sidewall to enhance the structure. The positioning groove is correspondingly divided into a positioning connecting groove and a positioning reinforcement groove. The positioning opening on the edge of the spacer provides guidance and space for the positioning reinforcement part to insert into the positioning reinforcement groove. Thus, through the dual cooperation of "connecting block and connecting groove" and "reinforcement part and reinforcement groove," a multi-dimensional limiting structure is formed, allowing the positioning connecting block to connect to the lock cover sidewall through the positioning reinforcement part, increasing the connection strength of the positioning block and preventing breakage. Simultaneously, the basic limiting of the positioning connecting block and groove restricts the horizontal sliding of the buffer pad, and the reinforcing limiting of the positioning reinforcement part and groove further restricts the thickness direction displacement of the buffer pad, significantly improving the connection stability between the buffer pad and the lock cover.

[0016] The aforementioned buffer pad positioning and mounting structure for a lock can be further configured such that the orthographic projection of the positioning block is T-shaped.

[0017] By adopting the above technical solution, the horizontal "horizontal arm" and vertical "vertical bar" of the T-shaped block form multi-dimensional limiting with the corresponding parts of the positioning groove. Through the dual limiting of the horizontal arm and vertical bar of the T-shaped positioning block, the horizontal sliding and thickness displacement of the buffer pad are constrained at the same time. This avoids the buffer pad from shifting or falling off due to the lateral stress or external force generated by the rotation of the handle, which significantly improves the connection stability between the buffer pad and the lock cover and ensures the stability of the lock in long-term use.

[0018] The aforementioned buffer pad positioning and mounting structure for a lock can be further configured such that the buffer pad is integrally molded from TPE material.

[0019] The above technical solution uses thermoplastic elastomer (TPE) as the material for the buffer pad and manufactures it through a one-piece molding process. Utilizing the inherent elasticity, fatigue resistance, and ease of processing of TPE, combined with the structural integrity of the one-piece molding process, the functional requirements of the buffer pad are met. TPE combines the elasticity of rubber with the weather resistance of plastic, allowing it to absorb the collision stress between the lock body and the door body through its own elastic deformation during lock use. The one-piece molding process ensures that the buffer pad's spacers, pads, positioning grooves, and other structures are seamless, forming a continuous and uniform whole during molding. This avoids structural weaknesses caused by splicing multiple parts, effectively buffering the rigid collision between the lock body and the door body, reducing wear on both, and ensuring the connection strength of the buffer pad's various structures. This prevents the buffer pad from shifting or falling off due to loose splicing, thereby improving the durability of the buffer pad and the long-term stability of the lock.

[0020] The aforementioned buffer pad positioning and mounting structure of a lock can be further configured such that: at least one inclined protrusion is provided at the end of the buffer pad away from the lock cover, which gradually moves away from the lock cover from the outer side to the inner side of the buffer pad.

[0021] By adopting the above technical solution, a sloping protrusion is set at the end of the buffer pad away from the lock cover. The geometric characteristics of the sloping surface are used to achieve mechanical engagement with the door mounting groove. When the buffer pad is pressed into the door opening, the inclined surface of the sloping protrusion contacts the edge or inner wall of the door opening. Through the guiding effect of the sloping surface (the inclined direction of the outer side being lower and the inner side being higher), the protrusion is guided to smoothly embed into the mounting groove. After embedding, the inclined surface of the sloping protrusion forms a reverse abutment relationship with the inner wall of the mounting groove, generating mechanical resistance that prevents the protrusion from falling outward. This fixes the buffer pad and the door as one, significantly enhancing the bonding force between the buffer pad and the door. It effectively prevents the buffer pad from shifting or falling off due to the lateral stress or gravity caused by the long-term rotation of the handle, thereby avoiding the sagging phenomenon of the handle due to the loosening of the buffer pad.

[0022] The aforementioned buffer pad positioning and installation structure of a lock can be further configured such that: the surface of the inclined protrusion away from the lock cover is provided with several anti-slip strips, and the anti-slip strips are arranged parallel to the side wall of the lock cover.

[0023] By adopting the above technical solution, an anti-slip strip parallel to the side wall of the lock cover is set on the surface of the inclined protrusion away from the lock cover. The protruding structure of the anti-slip strip increases the contact roughness between the inclined protrusion and the inner wall of the door opening. As a protruding ridge, the anti-slip strip transforms the original planar contact into multi-point / line contact when it contacts the inner wall of the door opening, increasing the friction coefficient of the contact surface. At the same time, the parallel setting direction of the anti-slip strip to the side wall of the lock cover makes its extension direction intersect with the direction in which the buffer pad may slip under the rotation of the handle or the action of external force during the use of the lock. This generates greater shear resistance between the anti-slip strip and the inner wall of the mounting groove, enhances the stability of the connection between the buffer pad and the door, and thus avoids the problem of handle sagging caused by the loosening of the buffer pad.

[0024] The aforementioned buffer pad positioning and mounting structure for a lock can be further configured such that the inclined protrusion and the positioning groove are respectively disposed on the front and back surfaces of the buffer pad.

[0025] By adopting the above technical solution, the inclined protrusion and the positioning groove are respectively set on the front and back sides of the buffer pad, realizing the spatial separation and functional independence of the two key connection structures. The inclined protrusion is located on the side of the buffer pad away from the lock cover, which is used for engagement and fixation with the door opening. The positioning groove is located on the side of the buffer pad close to the lock cover, which is used for insertion and fixation with the positioning block inside the lock cover. This distribution utilizes the front and back sides of the buffer pad to undertake different connection functions, ensuring that the two structures can independently contact the corresponding door and lock cover during assembly. The connection part is also strengthened, so that the engagement and fixation of the inclined protrusion with the door mounting groove and the insertion and fixation of the positioning groove with the lock cover positioning block do not interfere with each other. This significantly improves the overall connection stability of the buffer pad with the lock cover and the door, while ensuring the overall structural strength of the buffer pad.

[0026] The aforementioned buffer pad positioning and mounting structure for a lock can be further configured as follows: the number of the inclined protrusion, the positioning groove, and the positioning block are all four, and they are respectively arranged in pairs on both sides of the lock cover. The buffer pad is provided with a buffer base plate that connects the inclined protrusion. The buffer base plate has a lock hole in the center. The lock cover is provided with several mounting posts. The buffer base plate has a mounting groove that is engaged with the outer edge of the mounting post at the corresponding mounting post.

[0027] By employing the above technical solution, the symmetrical distribution of four beveled protrusions, positioning grooves, and positioning blocks, combined with the connection structure of the buffer base plate and the clamping fit between the mounting post and the mounting groove, achieves a multi-dimensional and balanced fixing effect. The four beveled protrusions are connected into a whole through the buffer base plate, forming a multi-point engagement with the door mounting groove, dispersing the force exerted by the door on the buffer pad, and avoiding excessive force at a single point. The symmetrical arrangement of the four positioning grooves and positioning blocks on both sides of the lock cover ensures that the limiting force of the lock cover on the buffer pad is evenly distributed, balancing the connection stress between the buffer pad and the lock cover. The lock hole in the center of the buffer base plate provides a mounting hole for the lock transmission components. The space provided allows for the locking of the lock cover to be secured with the mounting slot of the buffer base plate. In addition to the positioning slot and positioning block, a connection point between the buffer pad and the lock cover is added to further constrain the displacement of the buffer pad. The overall connection of the buffer base plate enhances the structural strength of the sloping protrusion, preventing deformation or detachment of the protrusion due to uneven stress. The locking fit between the mounting post and the mounting slot further restricts the rotation or local displacement of the buffer pad, significantly improving the connection stability between the buffer pad and the lock cover and the door body. This effectively avoids the problem of handle sagging caused by loose buffer pad, ensuring the stability and reliability of the lock for long-term use.

[0028] The present invention will now be further described with reference to the accompanying drawings. Attached Figure Description

[0029] Figure 1 This is a three-dimensional schematic diagram of Embodiment 1 of the present utility model.

[0030] Figure 2 Explosion of Embodiment 1 of this utility model Figure 1 .

[0031] Figure 3 Explosion of Embodiment 1 of this utility model Figure 2 .

[0032] Figure 4 This is a schematic diagram of the planar structure of Embodiment 1 of this utility model.

[0033] Figure 5 for Figure 4 A sectional view along the AA direction.

[0034] Figure 6 This is a state diagram of the door body in Embodiment 1 of this utility model.

[0035] Figure 7 This is a schematic diagram of the structure of Embodiment 1 of this utility model when used on a lock.

[0036] Figure 8 This is a cross-sectional schematic diagram of Embodiment 1 of this utility model when used on a lock.

[0037] Figure 9 This is a schematic diagram of the structure of Embodiment 2 of the present invention. Figure 1 .

[0038] Figure 10 This is a schematic diagram of the structure of Embodiment 2 of the present invention. Figure 2 . Detailed Implementation

[0039] Example 1: As Figures 1-8 As shown, a buffer pad positioning and installation structure for a lock includes a lock cover 1 and a buffer pad 2. Four sets of corresponding positioning grooves 3 and positioning blocks 4 are provided between the buffer pad 2 and the lock cover 1, arranged in pairs on both sides of the lock cover 1. The positioning grooves 3 and positioning blocks 4 are interlocked to form a limiting structure that restricts the horizontal sliding of the buffer pad 2 relative to the lock cover 1. The buffer pad 2 includes a spacer 21 for installation on the inner side of the lock cover 1 and a pad 22 for contact with the side wall surface of the lock cover 1. The spacer 21 and the pad 22 are connected, and the connection point is stepped. The positioning grooves 3 may be partially or entirely located on the spacer 21. The positioning blocks 4 are located on the inner side of the lock cover 1. The spacer 21 is partially or entirely inserted into the lock cover 1, allowing the positioning blocks 4 to be inserted into the positioning grooves 3. The positioning blocks 4 include a positioning connecting block 41 and a positioning connecting block 42. The positioning reinforcement part 42 is placed on one side of the positioning connecting block 41 and connected to the side wall of the lock cover 1. The positioning groove 3 includes a positioning connecting groove 31 that is inserted and engaged with the positioning connecting block 41 and a positioning reinforcement groove 32 that is inserted and engaged with the positioning reinforcement part 42. The edge of the spacer 21 is provided with a positioning opening 33 that communicates with the positioning reinforcement groove 32. The positioning connecting block 41 and the positioning reinforcement part 42 of the positioning block 4 are in a T-shaped structure to prevent the positioning block 4 from falling off the positioning groove 3. The buffer pad is integrally molded with TPE material. The TPE buffer pad absorbs excess rotational stress through its own elastic deformation, avoids direct rigid collision between the lock body and the door body, reduces wear and extends service life. At the same time, the limiting effect of the T-shaped positioning groove and the T-shaped installation groove can limit the excessive deformation of the buffer pad 2 and ensure structural stability.

[0040] like Figures 1-8As shown, the buffer pad 2 has four inclined protrusions 5 at the end away from the lock cover 1, which gradually move away from the lock cover 1 from the outside to the inside of the buffer pad 2. The inclined protrusions 5 and the positioning grooves 3 are respectively set on the front and back surfaces of the buffer pad 2. The surface of the inclined protrusions 5 away from the lock cover 1 is provided with multiple anti-slip strips 51, which are parallel to the side wall of the lock cover 1. The buffer pad 2 is provided with a buffer base plate 52 that connects all the inclined protrusions 5. The center of the buffer base plate 52 is provided with a lock hole 521 for the lock cylinder transmission component 61 to pass through. The lock cover 1 is provided with several mounting posts 11. The buffer base plate 52 is provided with mounting grooves 522 that are engaged with the outer edge of the mounting posts 11 at the corresponding mounting posts 11. The entire buffer pad 2 is made of thermoplastic elastomer TPE and uses T-slot four-point positioning. The inclined protrusions 5 are set to engage with the door opening 81. When the inner and outer handles 6 rotate more than 45 degrees, the buffer pad 2 will dissipate the excess force. The engaging structure ensures that the handle and panel will not sag or fall after long-term use.

[0041] like Figure 6 - Figure 8 As shown, when the buffer pad positioning and installation structure of this utility model is used on a lock, the lock includes inner and outer handles 6, a lock cylinder transmission component 61, and a lock cylinder 62. The lock cylinder 62 is installed on the profile 7, and the inner and outer handles 6 are installed on the door body 8. The door body 8 has a door body opening 81 for lock installation. The inclined protrusion is embedded in the door body opening 81 to form an interlocking and fixing structure. The door body can be a metal frame glass door or a wooden door, and the door body opening 81 can be a glass opening or a wooden mortise. After this setting, because the T-shaped positioning groove 3 on the buffer pad 2 and the T-shaped positioning block 4 on the lock cover 1 are inserted and engaged, and locked to the door body 8 by the mounting post 11, the pad 22 of the buffer pad 2 can completely fit the side wall surface of the lock cover 1. The anti-slip strip 51 increases the frictional resistance between the buffer pad 2 and the door body 8. When the inner and outer handles 6 are rotated by external force, the mounting groove 522 of the buffer base plate 52 and the mounting post 1 of the lock cover 1 are engaged. 1. A circumferential constraint is formed, which, together with the vertical limiting of the four sets of T-shaped positioning grooves 3 and positioning blocks 4, can effectively disperse the horizontal shear force. At the same time, after the inclined protrusion 5 is partially embedded in the door opening 81, its inclined surface and the groove wall form a wedge fit, generating a pre-tightening force in the thickness direction of the door body 8, further preventing the buffer pad 2 from axial displacement due to the rotation of the handle. This makes the buffer pad 2 of the lock achieve a stable connection with the lock cover 1 and the door body 8 through the triple fixation of the T-shaped positioning groove 3 and the T-shaped positioning block 4 of the lock cover 1, the inclined protrusion 5 and the glass opening 81, and the mounting post 11 and the mounting groove 522. The elastic buffer characteristics of the TPE material effectively absorb the excess stress when the handle is rotated, avoiding rigid collision between the lock body and the door body 8. The design of the anti-slip strip 51 further enhances the friction between the inclined protrusion 5 and the door opening 81. After long-term use, there is no loosening or handle sagging, which solves the defects of the existing technology.

[0042] Example 2: As Figure 9 , Figure 10 As shown, in this embodiment 2, the buffer pad 2 is set as a U-shaped edge strip structure, which makes the structure simpler. At the same time, multiple reinforcing ribs 23 are provided at the spacer 21 to improve the strength of the buffer pad 2.

Claims

1. A buffer pad positioning and mounting structure for a lock, comprising a lock cover and a buffer pad, characterized in that: At least one set of corresponding positioning grooves and positioning blocks are provided between the buffer pad and the lock cover, and the positioning grooves and positioning blocks form a limiting structure by interlocking.

2. The buffer pad positioning and mounting structure for a lock according to claim 1, characterized in that: The buffer pad includes a spacer for installation on the inside of the lock cover and a pad for contact with the side wall surface of the lock cover. The spacer and the pad are connected and the connection is stepped.

3. The buffer pad positioning and mounting structure for a lock according to claim 2, characterized in that: The positioning groove is disposed on the spacer, the positioning block is disposed inside the lock cover, and the spacer passes through the lock cover so that the positioning block is inserted into the positioning groove.

4. The buffer pad positioning and mounting structure for a lock according to claim 3, characterized in that: The positioning block includes a positioning connecting block and a positioning reinforcing part disposed on one side of the positioning connecting block and connected to the side wall of the lock cover. The positioning groove includes a positioning connecting groove that is inserted into the positioning connecting block and a positioning reinforcing groove that is inserted into the positioning reinforcing part. The edge of the spacer is provided with a positioning opening that communicates with the positioning reinforcing groove.

5. The buffer pad positioning and mounting structure for a lock according to claim 4, characterized in that: The orthographic projection of the positioning block is T-shaped.

6. The buffer pad positioning and mounting structure for a lock according to claim 4, characterized in that: The cushioning pad is made of TPE material and molded in one piece.

7. A buffer pad positioning and mounting structure for a lock according to any one of claims 1-6, characterized in that: The buffer pad has at least one inclined protrusion at the end away from the lock cover, which gradually moves away from the lock cover from the outside to the inside of the buffer pad.

8. The buffer pad positioning and mounting structure of a lock according to claim 7, characterized in that: The surface of the inclined protrusion away from the lock cover is provided with several anti-slip strips, which are arranged parallel to the side wall of the lock cover.

9. The buffer pad positioning and mounting structure for a lock according to claim 7, characterized in that: The inclined protrusions and the positioning grooves are respectively disposed on the front and back sides of the buffer pad.

10. The buffer pad positioning and mounting structure of a lock according to claim 9, characterized in that: The number of the inclined protrusions, positioning grooves, and positioning blocks are all four, and they are respectively arranged in pairs on both sides of the lock cover. The buffer pad is provided with a buffer base plate that connects the inclined protrusions. The buffer base plate has a lock hole in the center. The lock cover is provided with several mounting posts. The buffer base plate has a mounting groove that is locked with the outer edge of the mounting post at the corresponding mounting post.

Images