Furniture rebounding device

Abstract

The invention discloses a furniture rebounding device. The furniture rebounding device comprises a base, a shell sleeve, a telescopic assembly and a stroke switching structure. The telescopic assembly comprises a telescopic ejector rod, a telescopic shell, a telescopic base, a thread hooking body and a reset elastic piece. The shell sleeve can be installed on the base, and the telescopic assembly is installed on the base in a pressing mode. The stroke switching structure comprises a thread hooking guide rail groove and a thread hooking screw rod screw; the thread hooking guide rail groove is formed in the telescopic ejector rod and comprises a thread hooking ring groove, a thread hooking long sliding groove and a thread hooking short sliding groove. The telescopic assembly is a spliced assembly and is high in stability, components such as the internal reset elastic piece and the telescopic ejector rod are not prone to disengagement, and installation is convenient and fast. The long stroke and the short stroke of the telescopic ejector rod in the outward elastic state can be switched by adjusting the depth of the thread hooking lead screw and the screw in a telescopic mode, and therefore the multiple arrangement requirements of the large-stroke and small-stroke rebounding device telescopic ejector rod are met.

Description

Technical Field

[0001] The invention relates to the field of furniture hardware accessories, and in particular to a furniture rebound device. Background Art

[0002] A rebounder is a switch used on furniture such as cabinets and drawers. After the cabinet door rebounder is installed on the cabinet door, the handle is no longer needed when opening and closing the cabinet door. The door can be opened and closed by pressing the door panel. The rebounder usually changes the end structure of the top rod and adjusts the total protrusion length of the top rod according to the type of hinge. In the market, the rebounders on the market usually have a magnetic suction part or a buffer part at the top of the top rod to adapt to different hinge cabinet door structures.

[0003] However, due to the limited space at the end of the push rod, the existing rebounders are usually only arranged in a structure where either a magnetic part or a buffer is selected; different types of hinge structures often require different rebounders, and there are many types and quantities of rebounders, and it is difficult to simultaneously accommodate multiple functional effects such as push rod length adjustment, magnetic closure, and buffering of the buffer. For this reason, a furniture rebound device with a buffer and a magnetic closure is designed on the market. For example, a furniture rebound device disclosed in patent number CN202410299640.0. However, during the actual use test, the applicant found that this type of rebound device also includes the following defects:

[0004] 1. This type of rebound device can only adjust the outer shell to a shorter stroke forward and backward by adjusting the nut; the forward and backward stroke of the push rod in the outer shell is the maximum stroke of the front and rear ends of the hook wire guide groove. However, in addition to the demand for large-stroke rebounders on the market, there is also a demand for small-stroke rebounders; this rebound device cannot be adapted to the use environment of small strokes.

[0005] 2. The push rod is directly inserted into the outer shell, and one end is pressed against the outer shell by a return spring. The stability of the overall structure is poor. When the outer shell is installed on the base, the components in the outer shell are easy to fall out.

[0006] Therefore, further improvement is needed. Summary of the invention

[0007] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a furniture rebound device.

[0008] The technical solution adopted by an embodiment of the present invention to solve the technical problem is: a furniture rebound device, comprising: a base, an outer shell, a telescopic component and a travel switching structure;

[0009] The telescopic assembly comprises a telescopic top rod, a telescopic shell, a telescopic seat, a hook body and a reset elastic member; the telescopic shell and the telescopic seat are in the shape of an elongated strip, and the two surround a sliding receiving cavity in the shape of an elongated strip; the telescopic top rod can be slidably installed in the sliding receiving cavity, and the front end can be telescopically movable and extended at the front end of the telescopic shell; the reset elastic member is installed in the sliding receiving cavity, and can keep the telescopic top rod in an externally elastic or internally pressed state; the outer shell can be installed on the base, and the telescopic assembly is press-fitted on the base;

[0010] The stroke switching structure includes a hooking guide rail groove and a hooking screw; the hooking guide rail groove is arranged on the telescopic top rod, including a hooking ring groove, a long hooking slide groove and a short hooking slide groove; one end of the hooking body can be movably extended into the hooking guide rail groove, and the other end can be rotatably sleeved on the top end of the hooking screw; the hooking screw is passed through the telescopic seat, and the top end can be extended into the short hooking slide groove;

[0011] The rear end of the outer shell and the rear end of the base are provided with a first card slot and a first card portion that can be connected; the lower side of the front end of the base is provided with a second card slot, and the lower side of the front end of the outer shell is provided with a second card portion, and the second card portion can be inserted into the second card slot;

[0012] When the thread hooking screw extends into the short thread hooking slot, the top end of the thread hooking screw can be against the front end or rear end of the short thread hooking slot to limit the sliding stroke of the telescopic top rod to the front and rear stroke of the short thread hooking slot; when the thread hooking screw does not extend into the short thread hooking slot, the thread hooking body can slide in the long thread hooking slot to limit the sliding stroke of the telescopic top rod to the front and rear stroke of the long thread hooking slot.

[0013] Optionally, the wire hooking screw includes a wire hook end and a wire hook threaded portion; the wire hook end is cylindrical; the wire hook threaded portion is threadedly connected to the adjustment hole of the telescopic seat; the wire hooking body can be sleeved on the wire hook end; the wire hook end can extend into the wire hook short slide groove.

[0014] Optionally, the telescopic seat is provided with a limit protection cap at one end of the adjustment hole away from the telescopic top rod; the limit protection cap can cover the hook screw.

[0015] Optionally, the base is provided with a telescopic adjustment limit groove; the limit protection cap can movably extend into the telescopic adjustment limit groove to limit the front and rear positions of the telescopic component on the base.

[0016] Optionally, the outer shell is provided with an adjusting nut, the reset elastic member is a reset spring; the telescopic assembly includes an adjusting ejector pin;

[0017] The adjusting ejector pin comprises an ejector pin portion and a threaded column portion; the threaded column portion is threadedly connected to the adjusting nut and can abut against the telescopic assembly; the ejector pin portion extends into the telescopic housing; and the reset spring can be sleeved on the ejector pin portion.

[0018] Optionally, the telescopic seat is provided with a telescopic connecting block; the adjusting pin is passed through the telescopic connecting block; the telescopic connecting block is provided with a connecting card portion, and the telescopic shell is provided with a connecting card slot; the connecting card portion can be inserted into the connecting card slot.

[0019] Optionally, the telescopic top rod and the telescopic seat are provided with matching limiting guide blocks and limiting guide grooves; the limiting guide blocks can slide in the limiting guide grooves.

[0020] Optionally, both sides of the telescopic seat and both sides of the telescopic shell are provided with slidably connected side sliding grooves and side sliding rails.

[0021] Optionally, the telescopic assembly also includes a magnetic component and / or a buffer component; the magnetic component is installed at the front end of the telescopic shell or the telescopic seat; and when the telescopic top rod is in an internal pressure state, the front end of the magnetic component does not cross the front end of the telescopic top rod.

[0022] The beneficial effects of the present invention are as follows: the telescopic arm is integrated into a telescopic assembly, which includes a telescopic top rod, a telescopic outer shell and a telescopic seat; the telescopic outer shell and the telescopic seat are arranged to form a long sliding receiving chamber for accommodating the telescopic top rod, a wire hook body and components such as a reset elastic piece, so as to form a complete telescopic arm structure; subsequently, the outer shell is installed on the base, and the telescopic assembly can be pressed onto the base. The telescopic assembly is a spliced ​​assembly with high stability, and components such as the internal reset elastic piece and the telescopic top rod are not easy to fall out, so the installation is convenient and quick.

[0023] In addition, the furniture rebound device also includes a stroke switching structure, and the hook wire guide groove includes a hook wire ring groove, a hook wire long slide groove and a hook wire short slide groove. The hook wire ring groove can be slid and hooked by the hook wire body to achieve the function of positioning and fixing the telescopic top rod in the internal pressure state; when the telescopic top rod pops out, the hook wire body can slide to the end along the hook wire long slide groove to achieve the function of positioning and fixing the telescopic top rod in the long stroke state of the telescopic top rod; when the hook wire screw extends into the hook wire short slide groove, the top end of the hook wire screw screw can be against the front end or rear end of the hook wire short slide groove to limit the sliding stroke of the telescopic top rod to the front and rear stroke of the hook wire short slide groove, at this time, the hook wire screw screw is blocked and limited to achieve the function of positioning and fixing the telescopic top rod in the short stroke state of the telescopic top rod. The present invention can switch the long and short strokes of the telescopic top rod in the external spring state by telescopically adjusting the depth of the hook wire screw screw, thereby meeting the multiple arrangement requirements of the rebounder telescopic top rod with large stroke and small stroke. Furthermore, the two clamping parts and the clamping groove structures formed on the rear side and the lower side of the front end of the outer shell and the base can first be clamped and connected at the rear ends of the two, and then the outer shell can be pressed into the front end of the base at an angle, and the second clamping structure on the lower side of the front end can be clamped and fixed to complete the clamping connection between the outer shell and the base, thereby pressing the telescopic component onto the base. The assembly of the two is simple and convenient, and the telescopic component is not easy to fall off.

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0026] Figure 1 It is a structural schematic diagram of the furniture rebound device of the present invention;

[0027] Figure 2 for Figure 1 Exploded diagram of the furniture rebound device;

[0028] Figure 3 for Figure 1 Another exploded schematic diagram of the furniture rebound device;

[0029] Figure 4 for Figure 1 Cross-sectional view of the furniture rebound device.

[0030] Description of main component symbols:

[0031] 10. Base; 11. Telescopic adjustment limit slot; 12. First clamping part; 13. Second clamping slot; 20. Shell; 21. Adjustment nut; 22. First clamping slot; 23. Second clamping part; 30. Telescopic assembly; 31. Telescopic top rod; 311. Limiting guide block; 32. Telescopic shell; 321. Side slide rail; 322. Connecting slot; 33. Telescopic seat; 331. Adjustment hole; 332. Telescopic connecting block; 333. Connecting clamping part; 334. Limit Position guide groove; 335, side slide groove; 34, wire hook body; 35, reset elastic member; 36, limit protection cap; 37, adjustment ejector pin; 371, ejector pin portion; 372, threaded column portion; 40, stroke switching structure; 41, wire hook guide groove; 411, wire hook ring groove; 412, long wire hook slide groove; 413, short wire hook slide groove; 42, wire hook lead screw; 421, lead screw end; 422, lead screw thread portion; 50, magnetic suction member; 60, buffer member. DETAILED DESCRIPTION

[0032] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0033] In the description of the present invention, the meaning of "above", "below", "exceed", etc. is not inclusive of the number itself, and the meaning of "above", "below", "within", etc. is inclusive of the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0034] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] In the present invention, unless otherwise clearly defined, the words "set", "install", "connect" and the like should be understood in a broad sense, for example, they can be directly connected or indirectly connected through an intermediate medium; they can be fixedly connected or detachably connected or integrally formed; they can be mechanically connected; they can be the internal connection of two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0036] Example

[0037] Reference Figures 1 to 4 The present invention provides a furniture rebound device, comprising: a base 10, an outer shell 20, a telescopic component 30 and a travel switching structure 40;

[0038] The telescopic assembly 30 includes a telescopic top rod 31, a telescopic shell 32, a telescopic seat 33, a line hook body 34 and a reset elastic member 35; the telescopic shell 32 and the telescopic seat 33 are in the shape of an elongated strip, and the two surround a sliding receiving cavity in the shape of an elongated strip; the telescopic top rod 31 can be slidably installed in the sliding receiving cavity, and the front end can be telescopically movable and extended at the front end of the telescopic shell 32; the reset elastic member 35 is installed in the sliding receiving cavity, and can keep the telescopic top rod 31 in an externally elastic or internally pressed state; the outer shell 20 can be installed on the base 10, and the telescopic assembly 30 is press-fitted on the base 10;

[0039] The travel switching structure 40 includes a wire hooking guide groove 41 and a wire hooking screw 42; the wire hooking guide groove 41 is arranged on the telescopic top rod 31, and includes a wire hooking ring groove 411, a long wire hooking slide groove 412 and a short wire hooking slide groove 413; one end of the wire hooking body 34 can be movably extended into the wire hooking guide groove 41, and the other end can be rotatably sleeved on the top end of the wire hooking screw 42; the wire hooking screw 42 is penetrated by the telescopic seat 33, and the top end can be extended into the short wire hooking slide groove 413;

[0040] When the thread hooking screw 42 extends into the short thread hooking groove 413, the top end of the thread hooking screw 42 can be against the front end or rear end of the short thread hooking groove 413 to limit the sliding stroke of the telescopic top rod 31 to the front and rear stroke of the short thread hooking groove 413; when the thread hooking screw 42 does not extend into the short thread hooking groove 413, the thread hooking body 34 can slide in the long thread hooking groove 412 to limit the sliding stroke of the telescopic top rod 31 to the front and rear stroke of the long thread hooking groove 412.

[0041] In the present invention, the telescopic arm is integrated into a telescopic assembly 30, which includes a telescopic top rod 31, a telescopic outer shell 32 and a telescopic seat 33; the telescopic outer shell 32 and the telescopic seat 33 are surrounded to form a long sliding receiving chamber for accommodating the telescopic top rod 31, the hook wire body 34 and the reset elastic member 35 and other components, forming a complete telescopic arm structure; then, the outer shell sleeve 20 is installed on the base 10, and the telescopic assembly 30 can be pressed onto the base 10. The telescopic assembly 30 is a spliced ​​assembly with high stability. The internal reset elastic member 35 and the telescopic top rod 31 and other components are not easy to fall out, and the installation is convenient and quick.

[0042] In addition, the furniture rebound device also includes a stroke switching structure 40, and the hooking wire guide groove 41 includes a hooking wire ring groove 411, a hooking wire long slide groove 412 and a hooking wire short slide groove 413. The hooking wire ring groove 411 can be slid and hooked by the hooking wire body 34 to achieve the function of positioning and fixing the telescopic top rod 31 in the internal pressure state; when the telescopic top rod 31 pops out, the hooking wire body 34 can slide to the end along the hooking wire long slide groove 412 to achieve the function of positioning and fixing the telescopic top rod 31 in the external spring state with a long stroke; when the hooking wire screw 42 extends into the hooking wire short slide groove 413, the top end of the hooking wire screw 42 can abut against the front end or rear end of the hooking wire short slide groove 413 to limit the sliding stroke of the telescopic top rod 31 to the front and rear stroke of the hooking wire short slide groove 413, at this time, the hooking wire screw 42 is blocked and limited to achieve the function of positioning and fixing the telescopic top rod 31 in the external spring state with a short stroke. The present invention can switch the long and short strokes of the telescopic push rod 31 in the outward-spring state by telescopically adjusting the depth of the hooking screw 42, thereby meeting the multiple arrangement requirements of the rebounder telescopic push rod 31 with a long stroke and a short stroke.

[0043] In this embodiment, the thread hooking screw 42 includes a screw end 421 and a screw thread portion 422; the screw end 421 is cylindrical; the screw thread portion 422 is threadedly connected to the adjustment hole 331 of the telescopic seat 33; the thread hooking body 34 can be sleeved on the screw end 421; the screw end 421 can be inserted into the short thread hooking slot 413. By rotating the screw thread portion 422, the depth of the thread hooking screw 42 can be changed, thereby realizing the state switching of inserting or not inserting into the short thread hooking slot 413.

[0044] Specifically, the telescopic seat 33 is provided with a limit protection cap 36 at one end of the adjustment hole 331 away from the telescopic top rod 31; the limit protection cap 36 can cover the hooking screw 42. The limit protection cap 36 can cover the hooking screw 42 and the adjustment hole 331, effectively reducing the phenomenon of dust and water infiltration into the adjustment hole 331.

[0045] In this embodiment, the base 10 is provided with a telescopic adjustment limit groove 11; the limit protection cap 36 can be movably extended into the telescopic adjustment limit groove 11 to limit the front and rear position of the telescopic assembly 30 on the base 10. By using the matching limit of the limit protection cap 36 and the telescopic adjustment limit groove 11, the front and rear telescopic adjustment stroke of the telescopic assembly 30 relative to the base 10 can be limited as a whole, providing a limiting effect on the outer shell of the telescopic assembly 30. When the adjustment nut 21 adjusts the front and rear position of the telescopic assembly 30 in the outer shell 20, the matching limit of the limit protection cap 36 and the telescopic adjustment limit groove 11 can prevent the telescopic assembly 30 from being separated from the adjustment nut 21, resulting in the phenomenon that the adjustment nut 21 falls off.

[0046] Specifically, the outer shell 20 is provided with an adjusting nut 21, and the reset elastic member 35 is a reset spring; the telescopic assembly 30 includes an adjusting ejector pin 37; the adjusting ejector pin 37 includes an ejector pin portion 371 and a threaded column portion 372; the threaded column portion 372 is threadedly connected to the adjusting nut 21 and can be against the telescopic assembly 30; the ejector pin portion 371 extends into the telescopic outer shell 32; the reset spring can be sleeved on the ejector pin portion 371.

[0047] By adjusting the ejector pin 37, the end of the threaded column portion 372 can be abutted to limit the front and rear positions of the shell of the telescopic assembly 30 and the outer shell sleeve 20; and the structure in which the ejector pin portion 371 passes through the center of the return spring can effectively ensure the axial position of the return spring in the sliding receiving cavity, ensure the deformation direction of the return spring, and the two ends can respectively abut the telescopic ejector rod 31 and the telescopic seat 33 to maintain the stability of the elastic tensioning force and prevent the return spring from being easily detached.

[0048] In this embodiment, the telescopic seat 33 is provided with a telescopic connection block 332; the adjusting ejector pin 37 is inserted into the telescopic connection block 332; the telescopic connection block 332 is provided with a connecting clamp 333, and the telescopic housing 32 is provided with a connecting clamp slot 322; the connecting clamp 333 can be inserted into the connecting clamp slot 322. The telescopic housing 32 can be connected to the telescopic seat 33 by means of the telescopic connection block 332. In addition, the telescopic connection block 332 also provides a positioning space for the adjusting ejector pin 37 to be inserted, and also provides a contact space for the reset elastic member 35.

[0049] Specifically, the two sides of the telescopic seat 33 and the two sides of the telescopic shell 32 are provided with side sliding grooves 335 and side sliding rails 321 that can be slidably connected. The side sliding grooves 335 and the side sliding rails 321 can limit the lateral position of the telescopic seat 33 and the telescopic shell 32, and the two can be connected in a front-to-back reverse sliding manner. After the telescopic seat 33 is inserted into the telescopic shell 32 from the rear end, the front-to-back limit of the two can be completed through the connection clamping portion 333 of the telescopic connection block 332 at the rear end and the connection clamping groove 322 of the telescopic shell 32, and the clamping assembly of the telescopic seat 33 and the telescopic shell 32 is completed.

[0050] In this embodiment, the telescopic top rod 31 and the telescopic seat 33 are provided with matching limiting guide blocks 311 and limiting guide grooves 334; the limiting guide blocks 311 can slide in the limiting guide grooves 334 to reach the telescopic top rod 31. The limiting guide blocks 311 match and slide with the limiting guide grooves 334, and can provide an additional sliding limiting structure, so that the telescopic top rod 31 can slide forward and backward on the telescopic seat 33 more stably and reliably.

[0051] In this embodiment, the rear end of the outer shell 20 and the rear end of the base 10 are provided with a first card slot 22 and a first card portion 12 that can be snapped; the front lower side of the base 10 is provided with a second card slot 13, and the front lower side of the outer shell 20 is provided with a second card portion 23, and the second card portion 23 can be snapped into the second card slot 13. The two card portions and card slot structures formed on the rear side and the front lower side of the outer shell 20 and the base 10 can be snapped and connected by first snapping the rear ends of the two, and then the outer shell 20 is tiltedly pressed into the front end of the base 10, and the second snap structure on the front lower side is snapped and fixed, so that the outer shell 20 and the base 10 can be snapped and connected, so that the telescopic assembly 30 is pressed and mounted on the base 10, and the assembly and snapping of the two are simple and convenient, and the telescopic assembly 30 is not easy to fall off.

[0052] In some embodiments, a limit hook is provided at the front end of the base 10; a thin-walled connection structure is provided between the limit hook and the base 10. The limit hook is hooked on the front of the cabinet of the cabinet board, thereby matching and limiting the alignment of the base 10 with the cabinet board or the front end of the cabinet, so as to quickly locate and complete the installation of the base 10. After the base 10 is assembled, the limit hook can be quickly broken and removed through the thin-walled connection structure.

[0053] In this embodiment, the telescopic assembly 30 further includes a magnetic member 50 and / or a buffer member 60; the magnetic member 50 is installed at the front end of the telescopic housing 32 or the telescopic seat 33; and when the telescopic top rod 31 is in an internal pressure state, the front end of the magnetic member 50 does not cross the front end of the telescopic top rod 31. In actual use, the magnetic member 50 is at the front end of the telescopic top rod 31, and when the buffer member 60 of the top rod is maintained in a misaligned arrangement, the magnetic member 50 can provide a magnetic closure effect, and the buffer member 60 can abut against the buffer cabinet door to avoid a rapid collision between the cabinet door and the magnetic member 50.

[0054] Specifically, the buffer 60 can be installed or not installed according to the actual product model. Among them, the telescopic top rod 31 can be directly made of a material with a certain elastic buffering performance to achieve a buffering effect; or the elastic member can be installed at the front end of the top rod. The magnetic attraction member 50 can also be installed or not installed according to the actual product model.

[0055] In some embodiments, the buffer member 60 can be clamped on the outside of the magnetic member 50 to form an integral component with the magnetic member 50, and can achieve an elastic buffering effect while maintaining magnetic attraction.

[0056] Of course, the present invention is not limited to the above-mentioned embodiments, and those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications and substitutions are all included in the scope defined by the claims of this application.

Claims

1. A furniture rebound device, characterized in that: include: A base (10), an outer shell (20), a telescopic component (30) and a travel switching structure (40); The telescopic assembly (30) comprises a telescopic top rod (31), a telescopic shell (32), a telescopic seat (33), a line hook body (34) and a reset elastic member (35); the telescopic shell (32) and the telescopic seat (33) are in the shape of an elongated strip, and the two surround a sliding receiving cavity in the shape of an elongated strip; the telescopic top rod (31) is slidably mounted in the sliding receiving cavity, and the front end of the telescopic top rod (31) can be telescopically moved and extended at the front end of the telescopic shell (32); The resetting elastic member (35) is installed in the sliding receiving cavity and can keep the telescopic top rod (31) in an externally elastic or internally pressed state; the outer shell (20) can be installed on the base (10) and the telescopic assembly (30) can be press-fitted onto the base (10); The stroke switching structure (40) comprises a wire hooking guide groove (41) and a wire hooking screw (42); the wire hooking guide groove (41) is arranged on the telescopic top rod (31), and comprises a wire hooking ring groove (411), a long wire hooking slide groove (412) and a short wire hooking slide groove (413); one end of the wire hooking body (34) can be movably extended into the wire hooking guide groove (41), and the other end can be rotatably sleeved on the top end of the wire hooking screw (42); the wire hooking screw (42) is penetrated by the telescopic seat (33), and the top end can be extended into the short wire hooking slide groove (413); A first card slot (22) and a first card portion (12) that can be connected are provided at the rear end of the outer shell (20) and the rear end of the base (10); a second card slot (13) is provided at the lower side of the front end of the base (10), and a second card portion (23) is provided at the lower side of the front end of the outer shell (20), and the second card portion (23) can be inserted into the second card slot (13); When the thread hooking screw (42) extends into the short thread hooking groove (413), the top end of the thread hooking screw (42) can abut against the front end or rear end of the short thread hooking groove (413) to limit the sliding stroke of the telescopic top rod (31) to the front and rear stroke of the short thread hooking groove (413); when the thread hooking screw (42) does not extend into the short thread hooking groove (413), the thread hooking body (34) can slide in the long thread hooking groove (412) to limit the sliding stroke of the telescopic top rod (31) to the front and rear stroke of the long thread hooking groove (412).

2. The furniture rebound device according to claim 1, characterized in that: The thread hooking screw (42) comprises a screw end (421) and a screw thread portion (422); the screw end (421) is cylindrical; the screw thread portion (422) is threadedly connected to the adjustment hole (331) of the telescopic seat (33); the thread hooking body (34) can be sleeved on the screw end (421); the screw end (421) can extend into the short thread hooking groove (413).

3. The furniture rebound device according to claim 2, characterized in that: The telescopic seat (33) is provided with a limit protection cap (36) at one end of the adjustment hole (331) away from the telescopic top rod (31); the limit protection cap (36) can cover the thread hooking screw (42).

4. The furniture rebound device according to claim 3, characterized in that: The base (10) is provided with a telescopic adjustment limit slot (11); the limit protection cap (36) can movably extend into the telescopic adjustment limit slot (11) to limit the front and rear positions of the telescopic assembly (30) on the base (10).

5. The furniture rebound device according to claim 1, characterized in that: The outer shell (20) is provided with an adjusting nut (21); the reset elastic member (35) is a reset spring; the telescopic assembly (30) includes an adjusting ejector pin (37); The adjusting ejector pin (37) comprises an ejector pin portion (371) and a threaded column portion (372); the threaded column portion (372) is threadedly connected to the adjusting nut (21) and can abut against the telescopic assembly (30); the ejector pin portion (371) extends into the telescopic housing (32); and the return spring can be sleeved on the ejector pin portion (371).

6. The furniture rebound device according to claim 5, characterized in that: The telescopic seat (33) is provided with a telescopic connection block (332); the adjusting ejector pin (37) is inserted into the telescopic connection block (332); the telescopic connection block (332) is provided with a connection card portion (333); the telescopic housing (32) is provided with a connection card slot (322); the connection card portion (333) can be inserted into the connection card slot (322).

7. The furniture rebound device according to claim 1, characterized in that: The telescopic top rod (31) and the telescopic seat (33) are provided with matching limiting guide blocks (311) and limiting guide grooves (334); the limiting guide blocks (311) can slide in the limiting guide grooves (334).

8. The furniture rebound device according to claim 1, characterized in that: Side sliding grooves (335) and side sliding rails (321) that are slidably connected are provided on both sides of the telescopic seat (33) and both sides of the telescopic shell (32).

9. The furniture rebound device according to claim 1, characterized in that: The telescopic assembly (30) further comprises a magnetic member (50) and / or a buffer member (60); the magnetic member (50) is mounted on the front end of the telescopic housing (32) or the telescopic seat (33); and when the telescopic top rod (31) is in an internal pressure state, the front end of the magnetic member (50) does not cross over the front end of the telescopic top rod (31).

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