A door handle buffer structure
By installing a buffer assembly between the door lock handle and the lock shaft, and utilizing the compression and deformation of the buffer spring to achieve buffering, the problem of damage caused by excessive force in existing door locks is solved, thereby improving risk resistance and space utilization efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YIWEI SECURITY TECH (NINGBO) CO LTD
- Filing Date
- 2025-06-06
- Publication Date
- 2026-06-02
AI Technical Summary
The existing door lock handle is directly connected to the lock shaft, which can easily damage the lock body if the user uses too much force. In addition, the existing buffer structure is complex, takes up a lot of space, and has poor risk resistance.
A buffer assembly, including a rotating seat, a connecting seat, and a buffer spring, is set between the handle and the locking shaft. Buffering is achieved by the compression of the buffer spring. The structure is simple and the deformation of the buffer spring adapts to the rotation requirements, thereby increasing the risk resistance.
It achieves effective buffering within a limited space, reduces the risk of damage, improves the structure's resilience, has better adaptability, lower cost, and simpler structure.
Smart Images
Figure CN224314728U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lock technology, specifically to a buffer structure for a door handle. Background Technology
[0002] Door locks, as one of the most widely used types of locks, are installed on doors to control the opening and closing of the door relative to the door frame through unlocking and locking. Furthermore, existing door locks are usually equipped with handles for user convenience.
[0003] Currently, most door locks on the market have a direct connection between the lock shaft and the handle. One end of the handle has a socket, and the other end of the lock shaft is inserted into it. Users turn the handle to rotate the lock shaft and change the lock's position. However, due to individual differences and varying levels of understanding of locks among users, some users with greater strength and insufficient knowledge of locks may use excessive force when unlocking. This involves quickly and forcefully pressing down on the door handle, which directly transmits the force to the lock shaft, potentially damaging the lock body. Therefore, the industry is researching door handles with a buffer function to prevent damage caused by forced unlocking. For example, patent CN207110685U discloses an improved structure for a door handle with a buffer function. The handle is rotatably mounted inside a decorative cover via a pivot. A fork is provided on the surface of the pivot. Simultaneously, a rotating block is also provided inside the cover. The middle of the rotating block is hinged to the decorative cover, the rear of the rotating block is connected to a buffer cylinder, and the front of the rotating block is connected to the fork. This allows the rotating block to swing when the handle is rotated via the fork. The buffer cylinder then limits the swing speed of the rotating block, controlling the rotation speed of the handle and achieving buffering of the door handle. While this structure can meet the buffering requirements of a door handle, it uses a buffer cylinder as the buffer damping structure and requires the rotation of the rotating block, which in turn requires the fork to push. This involves numerous connecting structures, making the structure complex and increasing the risk of damage. Furthermore, it requires a large amount of space, meaning only one buffer structure can be installed within the limited space of the decorative cover, resulting in poor resilience. Summary of the Invention
[0004] To address the aforementioned problems in existing technologies, this invention aims to provide a buffer structure for a door handle. A buffer assembly is installed between the handle and the lock shaft. Several sets of buffer springs are arranged between the rotating seat and the connecting seat of the buffer assembly. The two ends of each buffer spring abut against the rotating seat and the connecting seat, respectively. The rotating seat and the connecting seat are connected to the handle and the lock shaft, respectively. When the lock shaft is rotated by the handle, the buffer springs are compressed first. After the buffer springs are compressed to a predetermined length, the rotating seat directly contacts the connecting seat, causing the lock shaft to rotate. In other words, buffering is achieved first through the compression of the buffer springs, and then the lock shaft is controlled after buffering. This is achieved using only buffer springs, resulting in a simple structure and low risk of damage. Furthermore, the buffer springs can be designed in an arc shape to better adapt to the movement of the door handle, facilitating space utilization and allowing more buffer springs to be installed within a limited space, thus improving risk resistance.
[0005] The specific technical solution is as follows:
[0006] A door handle buffer structure includes a handle and a locking shaft. The handle is rotatably mounted on a lock housing, and the locking shaft is located inside the lock housing. The structure further includes a buffer assembly disposed within the lock housing and between the locking shaft and the handle. The buffer assembly includes a rotating seat, a connecting seat, and a buffer spring. One end of the rotating seat is sleeved with one end of the connecting seat. The end of the rotating seat facing away from the connecting seat is connected to the handle, and the end of the connecting seat facing away from the rotating seat is connected to the locking shaft. The rotating seat and the connecting seat are coaxially arranged. The rotating seat has a plurality of spaced-apart first abutment portions at the end sleeved with the connecting seat, and the connecting seat has a plurality of spaced-apart second abutment portions at the end sleeved with the rotating seat. When the rotating seat and the connecting seat are sleeved together, the first abutment portions and the second abutment portions are alternately arranged. A buffer spring is provided between a first abutment portion and a corresponding second abutment portion, and the buffer spring is arranged in an arc shape.
[0007] In the aforementioned door handle buffer structure, a plurality of limiting portions are provided on one end of the rotating seat that is sleeved with the connecting seat, and a second abutment portion corresponds to a limiting portion. Furthermore, the limiting portion is located between two adjacent second abutment portions. In the initial state, there is a gap between the limiting portion on the rotating seat and the corresponding second abutment portion.
[0008] In the aforementioned door handle buffer structure, a rotating seat is provided with a rotating sleeve at one end of the connecting seat. An annular groove is provided on the inner side wall of the rotating sleeve along its circumference, and several notches are provided on the rotating sleeve along its radial direction. The rotating sleeve is divided into several mounting parts by the several notches, and each mounting part corresponds to a first abutting part. The first abutting parts are all provided in the notches and block one end of the annular groove on the corresponding mounting part.
[0009] In the aforementioned door handle buffer structure, a protrusion is provided at the center of the rotating sleeve, and a rotating hole is provided at the center of the protrusion. One end of the connecting seat is inserted into the rotating hole and rotated for connection.
[0010] In the aforementioned door handle buffer structure, the connecting seat further includes a rotating head and a turntable. The turntable is coaxially sleeved on one end of the lock shaft and is fixedly connected to the lock shaft. Several second abutment portions are protruding from the outer edge of the turntable, with adjacent second abutment portions spaced apart. The rotating head is coaxially provided on the side of the turntable away from the lock shaft. The turntable abuts against the protrusion. When the rotating head is inserted into the rotating hole, in the initial state, the outer side of the second abutment portion is located in the notch between two adjacent first abutment portions, and the inner side of the second abutment portion is located between two adjacent limiting portions.
[0011] In the aforementioned door handle buffer structure, each of the second abutment portions has clearance grooves at both ends and on its inner side. When the limiting portion contacts the second abutment portion, one end of the second abutment portion enters the clearance groove at the corresponding end of the limiting portion.
[0012] In the aforementioned door handle buffer structure, the connecting seat and the lock shaft are an integral structure.
[0013] The aforementioned door handle buffer structure further includes a limiting member, which is a retaining ring. A retaining groove is provided at one end of the lock shaft connected to the turntable. The inner side of the retaining ring is engaged in the retaining groove. An annular limiting groove is provided on the limiting part, which is coaxially arranged with the lock shaft. When the connecting seat is installed on the rotating seat, the outer side of the retaining ring extends into the annular limiting groove.
[0014] In the aforementioned door handle buffer structure, one end of the handle that is rotatably mounted on the lock housing has an insertion hole, and the other end of the rotating seat that is opposite to the end where the rotating sleeve is located has an insertion rod.
[0015] The aforementioned door handle buffer structure includes a first anti-disengagement hole on the handle that extends into the socket, and a second anti-disengagement hole on the rod that corresponds to the first anti-disengagement hole. When the rod is inserted into the socket of the handle, a pin is inserted into the first and second anti-disengagement holes.
[0016] The positive effects of the above technical solution are:
[0017] The aforementioned door handle buffer structure, by setting a buffer structure including a rotating seat, a connecting seat, and a buffer spring between the handle and the lock shaft, connects one end of the rotating seat and one end of the connecting seat. The rotating seat has a first abutment part, and the connecting seat has a second abutment part. The buffer spring is set in an arc shape, with its two ends abutting against the corresponding first and second abutment parts. At the same time, the rotating seat and the connecting seat are connected to the handle and the lock shaft respectively. When the handle drives the rotating seat to rotate, the buffer spring is first compressed by the first abutment part. The deformation of the buffer spring achieves buffering. After the buffer spring is compressed to a predetermined length, it pushes the second abutment part to rotate, thereby causing the connecting seat to drive the lock shaft to rotate, meeting the unlocking requirements. The structure is simple, low-cost, and has a low risk of damage. Furthermore, the arc-shaped buffer spring better adapts to the movement direction of the rotating seat and the connecting seat, which is beneficial for space utilization. Thus, more sets of buffer components can be set in a limited space, resulting in better risk resistance. Attached Figure Description
[0018] Figure 1 This is a structural diagram of an embodiment of the buffer structure for a door handle according to the present invention;
[0019] Figure 2 This is a structural diagram of the rotating seat according to a preferred embodiment of the present invention;
[0020] Figure 3 This is a structural diagram of the connector of a preferred embodiment of the present utility model.
[0021] In the attached diagram: 1. Handle; 2. Locking shaft; 21. Slot; 3. Lock housing; 4. Buffer assembly; 41. Rotating seat; 42. Connecting seat; 43. Buffer spring; 411. First abutment part; 412. Limiting part; 413. Rotating sleeve; 414. Mounting part; 415. Plug; 416. Rotating hole; 417. Insert rod; 418. Annular slide groove; 421. Second abutment part; 422. Rotating head; 423. Turntable; 424. Limiting component; 4121. Annular limiting groove; 4171. Second anti-disengagement hole; 4211. Clearance groove. Detailed Implementation
[0022] To make the technical means, creative features, objectives, and effects of this utility model easier to understand, the following embodiments are provided in conjunction with the appendix. Figure 1 To be continued Figure 3 The technical solution provided by this utility model is described in detail, but the following content is not intended to limit this utility model.
[0023] Figure 1 This is a structural diagram of an embodiment of the buffer structure for a door handle according to this utility model. Figure 1As shown, the door handle buffer structure provided in this embodiment includes: a handle 1, a locking shaft 2, a lock housing 3, and a buffer assembly 4. Just like a conventional door lock, the handle 1 is rotatably mounted on the lock housing 3, and the locking shaft 2 is located on the inner side of the lock housing 3, thus realizing the installation of the handle 1 and the locking shaft 2 on the lock housing 3.
[0024] Specifically, the buffer component 4 is placed inside the lock housing 3 and located between the lock shaft 2 and the handle 1, so that when the handle 1 drives the lock shaft 2 to rotate, it can be buffered by the buffer component 4 first, reducing the impact of the initial state change of the handle 1 on the lock shaft 2, and preventing the lock body from being damaged by violent unlocking.
[0025] Figure 2 This is a structural diagram of the rotating seat according to a preferred embodiment of the present invention; Figure 3 This is a structural diagram of the connector of a preferred embodiment of the present invention. Figures 1 to 3As shown, the buffer assembly 4 includes a rotating seat 41, a connecting seat 42, and a buffer spring. One end of the rotating seat 41 and one end of the connecting seat 42 are sleeved together, creating a mating structure between them. This provides the conditions for buffering between the two and for direct action after buffering. The end of the rotating seat 41 facing away from the connecting seat 42 is connected to the handle 1, and the end of the connecting seat 42 facing away from the rotating seat 41 is connected to the locking shaft 2, allowing the locking shaft 2 to be operated via the handle 1. Furthermore, the rotating seat 41 and the connecting seat 42 are arranged coaxially, allowing them to rotate relative to each other around the same axis, satisfying the requirements for the rotating seat 41 to rotate relative to the connecting seat 42 and for the rotating seat 41 to drive the connecting seat 42 to rotate. Furthermore, a plurality of spaced-apart first abutment portions 411 are provided on the rotating seat 41 at the end that engages with the connecting seat 42, and a plurality of spaced-apart second abutment portions 421 are provided on the connecting seat 42 at the end that engages with the rotating seat 41. The number of second abutment portions 421 is the same as the number of first abutment portions 411. When the rotating seat 41 and the connecting seat 42 are engaged, the plurality of first abutment portions 411 and the plurality of second abutment portions 421 are arranged alternately, such that one first abutment portion 411 corresponds to one second abutment portion 421. Simultaneously, between one first abutment portion 411 and its corresponding second abutment portion 421... A buffer spring is provided between the rotating seat 41 and the connecting seat 42, with its two ends abutting against the first abutting part 411 of the rotating seat 41 and the second abutting part 421 of the connecting seat 42, respectively. Since both the rotating seat 41 and the connecting seat 42 are rotating structures, the buffer spring is arranged in an arc shape, which allows it to adapt to the rotation requirements of the rotating seat 41 and the connecting seat 42. This ensures that the deformation direction of the buffer spring is consistent with the rotation direction of the rotating seat 41 and the connecting seat 42, facilitating the rational use of space. This allows for the installation of a larger number of buffer springs in limited space, improving the risk resistance capability. Furthermore, the structure is simple and easy to use. In subsequent use, the user first turns handle 1, which drives the rotating seat 41 to rotate. At this time, the rotating seat 41 first compresses the buffer spring through the first pressing part, causing the elastic force generated by the deformation of the buffer spring to gradually increase. When the elastic force of the buffer spring reaches the critical force for the rotation of the lock shaft 2, the buffer spring will push the connecting seat 42 to rotate synchronously through the second abutment part 421, thereby realizing the rotation of the lock shaft 2. Since there is a compression process of the buffer spring before the lock shaft 2 rotates, it provides handle 1 with a certain buffer stroke and a certain reverse force, avoiding the problem of damage to the lock caused by direct forceful unlocking. It is worth noting that a buffer spring with a suitable deformation coefficient can be selected according to different usage needs, so that the magnitude of the buffer force can be reasonably selected according to the usage needs, making the structure more flexible and adaptable.
[0026] More specifically, a plurality of limiting parts 412 are provided on the end of the rotating seat 41 that is sleeved with the connecting seat 42. Preferably, the limiting parts 412 and the rotating seat 41 are an integral structure, which has higher structural strength and better limiting effect. Furthermore, one second abutment part 421 corresponds to one limiting part 412, and the limiting part 412 is located between two adjacent second abutment parts 421, so that in the initial state, there is a gap between the limiting part 412 on the rotating seat 41 and the corresponding second abutment part 421. This allows the rotating seat 41 to rotate a predetermined distance by rotating the handle 1, firstly by the deformation of the buffer spring to adapt to the rotation of the handle 1, thus achieving buffering. After the handle 1 rotates a predetermined angle, the limiting part 412 abuts against the second abutment part 421, so that the rotating seat 41 directly contacts the second abutment part 421 of the connecting seat 42 through the limiting part 412, so that the rotating seat 41 directly drives the connecting seat 42 to rotate, preventing the problem of excessive compression of the buffer spring that could easily lead to structural damage.
[0027] More specifically, the rotating seat 41 is provided with a rotating sleeve 413 at one end of the connecting seat 42. Preferably, the rotating sleeve 413 and the rotating seat 41 are an integral structure. An annular groove 418 is provided on the inner side wall of the rotating sleeve 413 along its circumference to meet the requirements for installing buffer springs and rotating compression springs. Meanwhile, several notches are provided radially on the rotating sleeve 413, dividing the rotating sleeve 413 into several mounting parts 414. At this time, when the notches divide the rotating sleeve 413, they also divide the annular groove 418, so that each mounting part 414 has a section of annular groove 418, and each mounting part 414 corresponds to a first abutment part 411. The first abutment part 411 is provided in the notch and blocks one end of the annular groove 418 on the corresponding mounting part 414, so that a buffer spring can be installed in the section of annular groove 418 on each mounting part 414, and one end of each buffer spring can be abutted by the first abutment part 411, providing installation and deformation conditions for the buffer spring.
[0028] More specifically, the rotating sleeve 413 has a centrally located protrusion 415. Preferably, the protrusion 415 and the rotating sleeve 413 are an integral structure, which improves the structural stability of the protrusion 415. A rotating hole 416 is formed at the center of the protrusion 415. One end of the connecting seat 42 is inserted into the rotating hole 416 and rotatably connected, ensuring that the connecting seat 42 can be coaxially arranged with the rotating seat 41, making the relative rotation of the rotating seat 41 and the connecting seat 42 more stable. It is worth noting that a limiting part 412 is provided on the protrusion 415. The protrusion 415 raises the height of the limiting part 412, allowing the limiting part 412 and the first abutment part 411 to be misaligned. This provides conditions for one side of the second abutment part 421 to cooperate with the first abutment part 411 to install and compress the buffer spring, and for the other side of the second abutment part 421 to cooperate with the limiting part 412 to prevent over-limiting.
[0029] More specifically, in addition to the aforementioned second abutment portion 421, the connecting seat 42 also includes a rotating head 422 and a turntable 423. The turntable 423 is coaxially sleeved on one end of the locking shaft 2, and the turntable 423 is fixedly connected to the locking shaft 2, allowing the turntable 423 and the locking shaft 2 to rotate synchronously. Furthermore, several second abutment portions 421 are protruding from the outer edge of the turntable 423, connecting the second abutment portions 421 to the locking shaft 2, enabling the second abutment portions 421 to drive the locking shaft 2 to rotate. Moreover, adjacent second abutment portions 421 are spaced apart, providing space between adjacent second abutment portions 421 for the subsequent installation of a compression spring. Furthermore, a rotating head 422 is coaxially arranged on the side of the turntable 423 opposite to the locking shaft 2. This allows the rotating head 422 to be inserted into the rotating hole 416 on the boss 415 when the connecting seat 42 is installed on the rotating seat 41. The turntable 423 abuts against the boss 415 to achieve axial limiting, effectively improving the stability of the rotating seat 41 and the connecting seat 42 when they rotate relative to each other. When the rotating head 422 is inserted into the rotating hole 416, in the initial state, the outer side of the second abutment part 421 is located in the notch between two adjacent first abutment parts 411, and the inner side of the second abutment part 421 is located between two adjacent limiting parts 412. This allows the rotating seat 41 to rotate when the handle 1 drives it to rotate. As the rotating sleeve 413 of the rotating seat 41 rotates, the first abutment part moves toward the second abutment part and compresses the buffer spring. At this time, the outer side of the second abutment part gradually enters into a section of annular groove 418 on the corresponding mounting part 414, thus buffering the handle 1. As the handle 1 continues to turn, the limiting part 412 gradually approaches the inner side of the second abutting part. When the two abut each other, the limiting part 412 will push the second abutting part to rotate, thereby driving the locking shaft 2 to rotate.
[0030] More specifically, each of the second abutment portions has a relief groove 4211 at both ends and on its inner side. When the limiting portion 412 contacts the second abutment portion, one end of the second abutment portion enters the relief groove 4211 at the corresponding end of the limiting portion 412. The relief groove 4211 increases the travel distance of the limiting portion 412 relative to the second abutment portion, resulting in a larger stroke of the compression buffer spring and a better buffering effect. It is worth noting that relief grooves 4211 with different depths can be designed to adapt to different buffering needs, making the structural design more reasonable.
[0031] More specifically, the connecting seat 42 and the locking shaft 2 are an integral structure, that is, one end of the locking shaft 2 is directly used as the connecting seat 42, which improves the structural strength, makes the power transmission more direct and reliable, and makes the unlocking response more timely.
[0032] More specifically, the connecting seat 42 also includes a limiting member 424, which is a retaining ring, facilitating its installation and removal. At this time, a retaining groove 21 is formed at the end of the locking shaft 2 connected to the turntable 423. The inner side of the retaining ring is engaged in the retaining groove 21, thus enabling the retaining ring to be installed on the locking shaft 2. Simultaneously, an annular limiting groove 4121, coaxially arranged with the locking shaft 2, is formed on the limiting part 412. When the connecting seat 42 is installed on the rotating seat 41, the outer side of the retaining ring extends into the annular limiting groove 4121. The limiting member 424 restricts the axial movement of the connecting seat 42 on the rotating seat 41. That is, one side of the turntable 423 of the connecting seat 42 is abutted by the protrusion 415, and the other side is abutted by the limiting part 412 via the limiting member 424, thereby preventing the connecting seat 42 from detaching from the rotating seat 41 and improving the structural reliability of the buffer structure. In addition, the connecting seat 42 can be quickly assembled and disassembled on the rotating seat 41 by the deformation of the limiting member 424, making the structural design more reasonable.
[0033] More specifically, a socket is provided on the end face of the handle 1 that is rotatably mounted on the lock housing 3. At the same time, a plug rod 417 is provided on the end of the rotating seat 41 that is opposite to the rotating sleeve 413. Preferably, the plug rod 417 is a polygonal column and the socket is a polygonal hole that mates with the plug rod 417. This allows the handle 1 and the rotating seat 41 to be circumferentially limited after the plug rod 417 is inserted into the socket, ensuring that the handle 1 can drive the rotating seat 41 to rotate.
[0034] More specifically, a first anti-disengagement hole is provided on the side wall of the handle 1, extending into the insertion hole. At the same time, a second anti-disengagement hole 4171 corresponding to the first anti-disengagement hole is provided on the side wall of the insertion rod 417. When the insertion rod 417 is inserted into the handle 1, a pin can be inserted into the first and second anti-disengagement holes 4171 to prevent axial detachment between the handle 1 and the rotating seat 41. In addition, the alignment of the first and second anti-disengagement holes 4171 can be used to determine whether the angle of the handle 1 and the rotating seat 41 during installation meets the design requirements, thus providing an installation error prevention reminder.
[0035] The door handle buffer structure provided in this embodiment includes a handle 1, a lock shaft 2, and a buffer assembly 4. By connecting the rotating seat 41 and the connecting seat 42 of the buffer assembly 4 to the handle 1 and the lock shaft 2 respectively, and sleeved one end of the rotating seat 41 and the connecting seat 42 together, the rotating seat 41 is provided with a first abutting part 411, and the connecting seat 42 is provided with a corresponding second abutting part 421. An arc-shaped buffer spring is provided between the first abutting part 411 and the corresponding second abutting part 421. When the handle 1 drives the rotating seat 41 to rotate, the first abutting part 411 will first compress the buffer spring to achieve buffering. After being compressed to a predetermined stroke, it will push the second abutting part 421 to rotate, thereby realizing the rotation of the lock shaft 2. The handle 1 is buffered while satisfying the unlocking condition, preventing damage to the door lock caused by violent unlocking. The structure is simple and not easily damaged. The arc shape of the buffer spring adapts to the rotation requirements of the rotating seat 41 and the connecting seat 42, which can better utilize space and facilitate the arrangement of more buffer springs in a limited space, thus having stronger risk resistance.
[0036] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A buffer structure for a door handle, comprising a handle and a locking shaft, wherein the handle is rotatably mounted on a lock housing, and the locking shaft is disposed on the inner side of the lock housing, characterized in that, Also includes: A buffer assembly is disposed within the lock housing and located between the lock shaft and the handle. The buffer assembly includes a rotating seat, a connecting seat, and a buffer spring. One end of the rotating seat is sleeved with one end of the connecting seat. The end of the rotating seat facing away from the connecting seat is connected to the handle. The end of the connecting seat facing away from the rotating seat is connected to the lock shaft. The rotating seat and the connecting seat are arranged coaxially. A plurality of first abutment portions are provided on the rotating seat at the end sleeved with the connecting seat, and a plurality of second abutment portions are provided on the connecting seat at the end sleeved with the rotating seat. When the rotating seat and the connecting seat are sleeved with each other, the plurality of first abutment portions and the plurality of second abutment portions are arranged alternately. The buffer spring is provided between a first abutment portion and a corresponding second abutment portion, and the buffer spring is arranged in an arc shape.
2. The buffer structure of the door handle according to claim 1, characterized in that, The rotating seat is also provided with a plurality of limiting parts at one end where it is sleeved with the connecting seat, and one second abutment corresponds to one limiting part. Furthermore, the limiting part is located between two adjacent second abutment parts. In the initial state, there is a gap between the limiting part on the rotating seat and the corresponding second abutment part.
3. The buffer structure of the door handle according to claim 2, characterized in that, The rotating seat is provided with a rotating sleeve at one end of the connecting seat. An annular groove is provided on the inner side wall of the rotating sleeve along its circumference. Several notches are provided on the rotating sleeve along its radial direction. The rotating sleeve is divided into several mounting parts by the several notches. Each mounting part corresponds to a first abutting part. The first abutting parts are all located in the notches and block one end of the annular groove on the corresponding mounting part.
4. The buffer structure of the door handle according to claim 3, characterized in that, The rotating sleeve has a protrusion at its center, and a rotating hole is formed at the center of the protrusion. One end of the connecting seat is inserted into the rotating hole and rotated to connect.
5. The buffer structure of the door handle according to claim 4, characterized in that, The connecting seat also includes a rotating head and a turntable. The turntable is coaxially sleeved on one end of the locking shaft and is fixedly connected to the locking shaft. Several second abutment portions protrude from the outer edge of the turntable, and adjacent second abutment portions are arranged at intervals. The rotating head is coaxially provided on the side of the turntable away from the locking shaft. The turntable abuts against the protrusion. When the rotating head is inserted into the rotating hole, in the initial state, the outer side of the second abutment portion is located in the notch between two adjacent first abutment portions, and the inner side of the second abutment portion is located between two adjacent limiting portions.
6. The buffer structure of the door handle according to claim 2, characterized in that, Each of the second abutting portions has a clearance groove at both ends and on its inner side. When the limiting portion contacts the second abutting portion, one end of the second abutting portion enters the clearance groove at the corresponding end of the limiting portion.
7. The buffer structure of the door handle according to claim 1, characterized in that, The connecting seat and the locking shaft are an integral structure.
8. The buffer structure of the door handle according to claim 5, characterized in that, It also includes a limiting component, which is a retaining ring. A retaining groove is opened at one end of the locking shaft that is connected to the turntable. The inner side of the retaining ring is locked in the retaining groove. An annular limiting groove is opened on the limiting part and arranged coaxially with the locking shaft. When the connecting seat is installed on the rotating seat, the outer side of the retaining ring extends into the annular limiting groove.
9. The buffer structure of the door handle according to claim 3, characterized in that, The handle is rotatably mounted on the lock housing and has an insertion hole at one end, while the rotating seat has an insertion rod at the end opposite to the rotating sleeve.
10. The buffer structure of the door handle according to claim 9, characterized in that, The handle has a first anti-disengagement hole that extends into the socket, and the rod has a second anti-disengagement hole that corresponds to the first anti-disengagement hole. When the rod is inserted into the socket, a pin is inserted into the first anti-disengagement hole and the second anti-disengagement hole.