Double-section double-buffering handrail seat

Abstract

The utility model discloses a double-section double-buffering handrail seat, which relates to the field of handrail seats, and comprises telescopic drawstring components, a support tube and a chassis, the support tube is fixed on the chassis, and the upper part and the middle part of the support tube are respectively provided with a group of telescopic drawstring components; the device further comprises an upper buffering structure and a lower buffering structure, the upper buffering structure is installed at the top end of the supporting pipe and connected with the telescopic drawstring assembly on the upper portion of the supporting pipe in a transmission mode, and the telescopic drawstring assembly on the upper portion is decelerated and buffered. The lower buffering structure is arranged in the supporting pipe and connected with the telescopic drawstring assembly in the middle of the supporting pipe in a transmission mode, and the telescopic drawstring assembly in the middle is decelerated and buffered. According to the utility model, a slow buffering function is added to the drawstring at the lower part of the double-section handrail seat, so that the use risk is reduced.

Description

Technical Field

[0001] The utility model relates to the field of railing seats, in particular to a double-section double-buffered railing seat. Background Art

[0002] Railings are widely used in various public places. Double-section telescopic railings have a certain market because they have two drawstrings of different heights to prevent children from crossing. If the railing rebounds quickly during installation, there is a risk of hitting the pole and causing damage or even hitting people. Therefore, high-end railings are generally equipped with slow buffer devices. However, due to structural limitations, it is difficult to install a slow buffer device on the internal accessories of the lower drawstring in the double-section railing, so there is a certain risk. Utility Model Content

[0003] The utility model aims to overcome the deficiencies of the prior art and to provide a double-section double-buffer railing seat, which adds a slow buffering function to the lower drawstring of the double-section railing seat and reduces the risk of use.

[0004] The purpose of the utility model is achieved through the following technical solutions: this double-section double-buffer railing seat includes a telescopic pull belt assembly, a support tube and a chassis, the support tube is fixed on the chassis, and a group of telescopic pull belt assemblies are arranged at the upper and middle parts of the support tube; it also includes an upper buffer structure and a lower buffer structure, the upper buffer structure is installed on the top of the support tube, and is connected to the telescopic pull belt assembly on the upper part of the support tube for transmission, so as to decelerate and buffer the upper telescopic pull belt assembly; the lower buffer structure is placed in the support tube, and is connected to the telescopic pull belt assembly in the middle part of the support tube for transmission, so as to decelerate and buffer the telescopic pull belt assembly in the middle part.

[0005] As a further technical solution, four installation grooves are opened on the outer wall of the support tube at positions corresponding to the upper and middle telescopic drawstring assemblies. Each set of telescopic drawstring assemblies is provided with an outlet and three sockets, which are respectively fixed on the corresponding installation grooves. The drawstrings of the telescopic drawstring assemblies extend from the outlets and are connected to the plug. The plug is used to be plugged into the socket of another railing seat. The drawstring shaft is set at the center of the drawstring and rotates synchronously with the extension and retraction of the drawstring.

[0006] As a further technical solution, the upper buffer structure and the lower buffer structure both include a circular sleeve and a cover covering the circular sleeve. A partition is arranged inside the circular sleeve to form a buffer cavity between the cover and the partition for placing a transmission plate. A plurality of speed reduction plates are evenly distributed along the circumferential direction on the transmission plate. After the pull belt shaft passes through the partition, it drives the transmission plate to rotate, so that the outer surface of the speed reduction plate contacts the inner surface of the buffer cavity to achieve friction deceleration.

[0007] As a further technical solution, a center hole is opened on the partition, and the transmission shaft arranged at the bottom of the transmission plate passes through the center hole and is connected to the pull belt shaft for transmission.

[0008] As a further technical solution, a number of latches and limit pins are evenly distributed on the transmission plate in the circumferential direction, and the limit pins are located on the inner side of the latches, and a socket matching the latches is provided on the reduction plate; when the transmission plate rotates clockwise, the reduction plate tightens inward and presses against the limit pins.

[0009] As a further technical solution, a plurality of slots are provided on the outer wall of the circular sleeve for cooperating with the buckles provided on the lower edge of the cover.

[0010] As a further technical solution, four fixing holes are provided on the circular sleeve along the circumferential direction, and the outlet and the socket are extended into the mounting groove and connected and fixed to the fixing holes.

[0011] As a further technical solution, in the upper buffer structure, the outer diameter of the cover is equal to that of the support tube and larger than that of the circular sleeve, so that after the circular sleeve is placed in the support tube, the cover just exposes the support tube and covers the top of the support tube.

[0012] As a further technical solution, in the lower buffer structure, the outer diameter of the cover is equal to the outer diameter of the circular sleeve and smaller than the inner diameter of the support tube, so that the cover and the circular sleeve can be placed in the support tube as a whole after being matched.

[0013] The beneficial effects of the utility model are:

[0014] 1. A set of retractable drawstring components are set on the upper and middle parts of the railing seat to effectively prevent children from crossing and improve safety;

[0015] 2. Each set of telescopic drawstring components is connected to a corresponding buffer structure, so that two drawstrings at different heights can achieve deceleration buffering, avoiding the safety risks caused by the drawstring rebounding too quickly;

[0016] 3. When the drawstring is extended or retracted, the transmission plate is driven by the drawstring shaft, so that the reduction plate is tightened or expanded under the action of inertia, and the deceleration is achieved through contact friction with the inner wall of the buffer cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The three-dimensional structure of the utility model is shown in FIG. Figure 1 .

[0018] Figure 2 The three-dimensional structure of the utility model is shown in FIG. Figure 2 (Partial section).

[0019] Figure 3 It is a schematic diagram of the connection structure between the upper buffer structure and the telescopic pull belt assembly in the utility model.

[0020] Figure 4 It is a schematic diagram of the assembly structure of the upper / lower buffer structure in the utility model.

[0021] Figure 5 It is a schematic diagram of the structure when the outer wall of the speed reducer is not in contact with the inner wall of the buffer cavity in the utility model.

[0022] Figure 6 It is a schematic diagram of the structure when the outer wall of the speed reducer plate contacts the inner wall of the buffer cavity in the utility model.

[0023] Figure 7 It is a schematic diagram of the assembly structure of the sealing cover and the circular sleeve of the upper buffer component in the utility model.

[0024] Figure 8 It is a structural schematic diagram of the upper buffer structure and the support pipe when assembled in the utility model.

[0025] Fig. 9 It is a schematic diagram of the structure of the upper buffer structure and the support pipe after being assembled in the utility model.

[0026] Fig.10 It is a schematic diagram of the assembly structure of the sealing cover and the circular sleeve of the middle and lower buffer components of the utility model.

[0027] Fig.11 It is a schematic diagram of the structure of the utility model after the middle and lower buffer structures and the support tube are assembled.

[0028] Explanation of the accompanying drawings: cover 1, buckle 11, speed reducer 2, socket 21, outer surface 22, circular sleeve 3, partition 31, center hole 32, inner surface 33, buffer cavity 34, fixing hole 35, slot 36, transmission plate 4, transmission shaft 41, latch 42, limit pin 43, upper buffer structure 100, lower buffer structure 200, telescopic pull strap assembly 300, pull strap shaft 301, pull strap 302, plug 303, socket 304, outlet 305, support tube 400, mounting groove 401, chassis 500. DETAILED DESCRIPTION

[0029] The utility model will be described in detail below with reference to the accompanying drawings:

[0030] Example: As shown in the attached Figures 1 to 11 As shown, this double-section double-buffer railing seat includes a cover 1, a buckle 11, a speed reducer 2, a socket 21, an outer surface 22, a circular sleeve 3, a partition 31, a center hole 32, an inner surface 33, a buffer cavity 34, a fixing hole 35, a slot 36, a transmission plate 4, a transmission shaft 41, a latch 42, a limit pin 43, an upper buffer structure 100, a lower buffer structure 200, a telescopic pull strap assembly 300, a pull strap shaft 301, a pull strap 302, a plug 303, a socket 304, an outlet 305, a support tube 400, a mounting groove 401, and a chassis 500.

[0031] Reference Figure 1 , 2The support tube 400 is fixedly connected to the chassis 500, and a set of telescopic drawstring assemblies 300 are arranged at the upper and middle parts of the support tube 400 to form a double-layer railing seat. The upper buffer structure 100 is installed at the top of the support tube 400, and is connected to the telescopic drawstring assembly 300 at the upper part of the support tube 400 for transmission, and performs deceleration and buffering on the upper telescopic drawstring assembly 300; the lower buffer structure 200 is placed in the support tube 400, and is connected to the telescopic drawstring assembly 300 at the middle part of the support tube 400 for transmission, and performs deceleration and buffering on the telescopic drawstring assembly 300 at the middle part.

[0032] like Figure 3 , 8 As shown in Figure 9, four installation grooves 401 (eight in total) are provided on the outer wall of the support tube 400 at positions corresponding to the upper and middle telescopic drawstring assemblies 300. Each set of telescopic drawstring assemblies 300 is provided with an outlet 305 and three sockets 304, which are respectively fixedly installed on the corresponding installation grooves 401. The drawstring 302 of the telescopic drawstring assembly 300 extends from the outlet 305 and is connected to the plug 303. The plug 303 can be plugged into the socket 304 of another railing seat. The drawstring shaft 301 is set at the center of the drawstring 302 and rotates synchronously with the extension and retraction of the drawstring 302.

[0033] For further information, see Attachment Figure 4 The upper buffer structure 100 and the lower buffer structure 200 adopt the same structure, both including a circular sleeve 3 and a cover 1. The outer wall of the circular sleeve 3 is provided with a plurality of slots 36, and the lower edge of the cover 1 is provided with a corresponding buckle 11. The cover 1 is fixed on the circular sleeve 3 by a buckle connection. A partition 31 is provided in the circular sleeve 3, so that a buffer cavity 34 is formed between the cover 1 and the partition 31. The buffer cavity 34 is provided with a transmission plate 4. A central hole 32 is provided through the partition 31. The transmission shaft 41 provided at the bottom of the transmission plate 4 passes through the central hole 32 and is connected to the pull belt shaft 301 for transmission. Figure 4 , 5 As shown in , 6, three pins 42 and limit pins 43 are evenly distributed on the transmission plate 4 along the circumferential direction, and the limit pins 43 are located inside the pins 42. The speed reducer 2 is provided with a plug hole 21 matching the pins 42, and a speed reducer 2 is correspondingly inserted into each pin 42. When the transmission plate 4 rotates clockwise, the speed reducer 2 is tightened inward and pressed against the limit pins 43. When the transmission plate 4 rotates counterclockwise, the speed reducer 2 expands outward, and the outer surface 22 of the speed reducer 2 contacts the inner surface 33 of the buffer cavity 34, thereby achieving friction deceleration.

[0034] like Figure 8 , 11As shown, four fixing holes 35 are provided on the outer wall of the circular sleeve 3 along the circumferential direction, and the outlet 305 and the socket 304 are inserted into the mounting groove 401 and fixed to the fixing holes 35 by threaded connection. Further, in the upper buffer structure 100, the outer diameter of the cover 1 is equal to the outer diameter of the support tube 400 and slightly larger than the outer diameter of the circular sleeve 3, so that after the circular sleeve 3 is placed in the support tube 400, the cover 1 just exposes the support tube 400 and covers the top of the support tube 400, as shown in FIG. Figure 8 , 9 In the lower buffer structure 200, the outer diameter of the cover 1 is equal to the outer diameter of the circular sleeve 3 and is slightly smaller than the inner diameter of the support tube 400, so that the cover 1 and the circular sleeve 3 are integrally placed in the support tube 400 after being matched. Fig.10 , 11 shown.

[0035] The working process of the utility model is as follows: the speed reducer 2 is located in the circular sleeve 3 and is connected to the drawstring shaft 301 for transmission. The circular sleeve 3 and the cover 1 are connected and fixed by a snap-fit ​​structure, so that the speed reducer 2 can move in the space between the two (buffer cavity 34). When the drawstring 302 is stretched, the transmission shaft 41 (drawstring shaft 301) rotates clockwise, driving the speed reducer 2 to move together. The speed reducer 2 is tightened inward due to inertia, and no friction is generated with the inner wall 33 of the circular sleeve 3 (that is, there is still a gap and they are not in contact with each other). Figure 5 When the pull belt 302 is recovered, the transmission shaft 41 (pull belt shaft 301) rotates counterclockwise, driving the deceleration plate 2 to move together. The deceleration plate 2 expands outward due to inertia, and the outer wall 22 of the deceleration plate 2 contacts the inner wall 33 of the circular sleeve 3 to generate friction, thereby achieving a deceleration effect. Figure 6 shown.

[0036] It is understandable that, for those skilled in the art, any equivalent replacement or change to the technical solution and the concept of the utility model should fall within the protection scope of the claims attached to the utility model.

Claims

1. A double-section double-buffered handrail seat, comprising a telescopic drawstring assembly (300), a support tube (400) and a chassis (500), wherein the support tube (400) is fixed on the chassis (500), and a set of telescopic drawstring assemblies (300) are arranged at the upper part and the middle part of the support tube (400), characterized in that: It also includes an upper buffer structure (100) and a lower buffer structure (200), wherein the upper buffer structure (100) is installed at the top of the support tube (400) and is connected to the telescopic drawstring assembly (300) at the top of the support tube (400) for transmission, thereby performing deceleration and buffering on the upper telescopic drawstring assembly (300); and the lower buffer structure (200) is placed in the support tube (400) and is connected to the telescopic drawstring assembly (300) at the middle of the support tube (400) for transmission, thereby performing deceleration and buffering on the telescopic drawstring assembly (300) at the middle.

2. The double-section double-buffer railing seat according to claim 1 is characterized in that: Four installation grooves (401) are provided on the outer wall of the support tube (400) at positions corresponding to the upper and middle telescopic drawstring assemblies (300). Each set of telescopic drawstring assemblies (300) is provided with an outlet (305) and three sockets (304), which are respectively fixed on the corresponding installation grooves (401). The drawstring (302) of the telescopic drawstring assembly (300) is extended from the outlet (305) and connected to the plug (303). The plug (303) is used to be plugged into the socket (304) of another railing seat. The drawstring shaft (301) is arranged at the center of the drawstring (302) and rotates synchronously with the extension and retraction of the drawstring (302).

3. The double-section double-buffer railing seat according to claim 2 is characterized in that: The upper buffer structure (100) and the lower buffer structure (200) both include a circular sleeve (3) and a cover (1) covering the circular sleeve (3); a partition (31) is arranged inside the circular sleeve (3) so that a buffer cavity (34) is formed between the cover (1) and the partition (31) for inserting a transmission plate (4); a plurality of speed reduction plates (2) are evenly distributed along the circumferential direction on the transmission plate (4); the pull belt shaft (301) penetrates the partition (31) and drives the transmission plate (4) to rotate, so that the outer surface (22) of the speed reduction plate (2) contacts the inner surface (33) of the buffer cavity (34) to achieve frictional deceleration.

4. The double-section double-buffer railing seat according to claim 3 is characterized in that: The partition plate (31) is provided with a central hole (32), and a transmission shaft (41) arranged at the bottom of the transmission plate (4) passes through the central hole (32) and is connected to the belt pull shaft (301) for transmission.

5. The double-section double-buffer railing seat according to claim 3 is characterized in that: A plurality of latch pins (42) and limit pins (43) are evenly distributed on the transmission plate (4) along the circumferential direction, and the limit pins (43) are located inside the latch pins (42). A plug hole (21) matching the latch pins (42) is provided on the reduction plate (2); when the transmission plate (4) rotates clockwise, the reduction plate (2) is tightened inwardly and abuts against the limit pins (43).

6. The double-section double-buffer railing seat according to claim 3 is characterized in that: A plurality of slots (36) are provided on the outer wall of the circular sleeve (3) for cooperating with the buckles (11) arranged on the lower edge of the sealing cover (1).

7. The double-section double-buffer railing seat according to claim 3 is characterized in that: Four fixing holes (35) are provided on the circular sleeve (3) along the circumferential direction, and the outlet (305) and the socket (304) are connected and fixed to the fixing holes (35) after extending into the mounting groove (401).

8. The double-section double-buffer railing seat according to claim 3 is characterized in that: In the upper buffer structure (100), the outer diameter of the cover (1) is equal to the outer diameter of the support tube (400) and is larger than the outer diameter of the circular sleeve (3), so that after the circular sleeve (3) is placed in the support tube (400), the cover (1) just exposes the support tube (400) and covers the top of the support tube (400).

9. The double-section double-buffer railing seat according to claim 3, characterized in that: In the lower buffer structure (200), the outer diameter of the sealing cover (1) is equal to the outer diameter of the circular sleeve (3) and is smaller than the inner diameter of the support tube (400), so that the sealing cover (1) and the circular sleeve (3) are matched and placed in the support tube (400) as a whole.

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