Fixed retainer

Abstract

The utility model relates to the technical field of retainer connection, in particular to a fixed retainer, which is characterized in that a concave chuck is fixed at the end part of one end of a cantilever tube, a screw rod connected with the cantilever tube is arranged in a convex chuck in an extending manner, an inclined plate inclined upwards is arranged in an inner cavity of the concave chuck, and a T-shaped nut is rotationally connected to the end part of the screw rod in a threaded manner; the clamping assembly has the beneficial effects that relative elastic rotation separation of the convex clamping head and the concave clamping head is achieved through the arrangement of the torsion spring, the purpose of automatic opening of the clamping assembly is achieved, meanwhile, the T-shaped nut is arranged to be matched with the lead screw, the T-shaped nut is driven to move transversely, and therefore the clamping assembly can be automatically opened. By means of transverse extrusion of the T-shaped nut on the inclined plate, relative rotating closing of the convex chuck and the concave chuck is achieved, the purpose of fixed clamping is achieved, opening, closing and clamping of the clamping assembly can be achieved only by controlling rotation of the lead screw, and operation convenience is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of retainer connection technology, specifically a fixed retainer. Background Technology

[0002] A retainer is a connector used to connect a pair of structures. It is most commonly used for binding and fixing frame-type equipment such as bicycles and scaffolding. The connectors at both ends of the retainer are used to connect the fixing component and the transport component respectively.

[0003] The existing patent number is CN112172685B, which discloses a frame retainer and a device for connecting two objects, particularly for securing a bicycle frame to a bicycle stand. The device includes: a base body defining a longitudinal axis; and a clamping device disposed at one end region of the base body to connect the base body to a first object, particularly a yoke connected to a bicycle stand. The clamping device includes at least two clamping elements that form a receiver for the first object between them and are movable relative to each other between an open position and a clamped position. In the open position, the clamping device can be attached to or removed from the first object; in the clamped position, the clamping device is engaged around the first object in a fixed manner.

[0004] However, existing retainers are mostly a pair of clamping devices that rotate relative to each other. The clamping purpose is achieved by fixing the relative rotation position. However, existing rotational closure often requires manual assistance. For example, the aforementioned patent uses pressure element to achieve fixation, but after the fixation is released, the pair of clamping devices will automatically separate, and manual assistance is required to close them again, so automatic closure cannot be achieved. Utility Model Content

[0005] The purpose of this invention is to provide a retainer to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A retainer includes a cantilever tube. At each end of the cantilever tube are a clamping assembly that is closed and clamped by a convex clamp and a concave clamp, and a binding assembly that is connected by a ratchet belt. The clamping assembly includes a convex clamp and a concave clamp that are elastically separated by a rotating shaft and a torsion spring. The convex clamp is fixed to one end of the cantilever tube. A lead screw extending from the convex clamp is connected to the cantilever tube. An upwardly inclined plate is provided in the inner cavity of the concave clamp. A T-nut is threadedly rotatably connected to the end of the lead screw. The lower end of the horizontal plate at the end of the T-nut is laterally aligned with the inclined surface of the inclined plate.

[0008] Preferably, the binding assembly includes a ratchet seat, one end of the cantilever tube is provided with an inner plug, the end of the inner plug is provided with a concave hole, the cantilever tube is inserted into the ratchet seat, and the ratchet seat is provided with a protrusion that engages with the concave hole.

[0009] Preferably, the ratchet seat is provided with a sleeve and a locking assembly, one end of the ratchet belt is rotatably mounted on the sleeve, and the other end of the ratchet belt is fixed to the locking assembly.

[0010] Preferably, the locking assembly includes a wrench that engages with a ratchet on the ratchet belt and a button that controls the relative rotation of the wrench, and a locking assembly that controls the movement of the button is provided on the ratchet seat.

[0011] Preferably, the convex clamp and the concave clamp are rotatably connected by a rotating shaft. Both ends of the rotating shaft are provided with torsion springs that drive the convex clamp and the concave clamp to rotate relative to each other and separate. The inner cavity of the cantilever tube near the convex clamp is provided with a welding seat. A lead screw is fixed on the welding seat. The lead screw passes through the convex clamp and extends into the inner cavity between the convex clamp and the concave clamp.

[0012] Preferably, the end of the cantilever pipe is provided with a pipe plug, and the end of the lead screw is provided with a mounting plate that fits against the welding seat. The pipe plug and the mounting plate are fixed to the welding seat by fastening bolts.

[0013] Preferably, the T-shaped nut has a through threaded hole, the lead screw rotates through the through threaded hole, and a retaining ring is provided at the end of the lead screw.

[0014] Preferably, the end plate of the T-shaped nut has an arc surface on the side facing the inclined plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention utilizes a torsion spring to achieve the relative elastic rotational separation of the convex and concave clamps, thus enabling the clamping assembly to open automatically. Simultaneously, a T-nut, in conjunction with a lead screw, drives the T-nut to move laterally. The lateral compression of the inclined plate by the T-nut achieves the relative rotational closure of the convex and concave clamps, thus securing them in place. Therefore, simply controlling the rotation of the lead screw is sufficient to open and close the clamping assembly, significantly improving operational convenience. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the T-shaped nut and inclined plate assembly of this utility model.

[0019] Figure 3 This is an exploded view of the three-dimensional structure of this utility model;

[0020] Figure 4 This is a cross-sectional view of the inclined plate in the concave chuck of this utility model;

[0021] Figure 5 This is a side view of the ratchet seat of this utility model;

[0022] Figure 6 This is a schematic diagram of the three-dimensional structure of the inner plug of this utility model.

[0023] In the diagram: 1. Ratchet seat; 2. Ratchet belt; 3. Locking assembly; 4. Locking assembly; 5. Cantilever tube; 6. Convex chuck; 7. Rotary shaft; 8. Concave chuck; 9. Welding seat; 10. Pipe plug; 11. Lead screw; 12. T-nut; 13. Torsion spring; 14. Inner plug; 15. Mounting plate; 16. Retaining ring; 17. Inclined plate; 18. Protrusion; 19. Concave hole; 20. Fastening bolt; 21. Threaded through hole. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1 to 6 This utility model provides a technical solution:

[0026] A retainer includes a cantilever tube 5. Both ends of the cantilever tube 5 are respectively provided with a clamping assembly that is closed and clamped by a convex clamp 6 and a concave clamp 8, and a binding assembly that is bound together by a ratchet belt 2. The binding assembly includes a ratchet seat 1. One end of the cantilever tube 5 is provided with an inner plug 14, and the end of the inner plug 14 is provided with a concave hole 19. The cantilever tube 5 is inserted into the ratchet seat 1. The ratchet seat 1 is provided with a protrusion 18 that engages with the concave hole 19. The ratchet seat 1 is provided with a sleeve and a locking assembly 3. One end of the ratchet belt 2 is rotatably mounted on the sleeve, and the other end of the ratchet belt 2 is fixed to the locking assembly 3. The locking assembly 3 includes a wrench that engages with the ratchet on the ratchet belt 2 and a button that controls the relative rotation of the wrench. The ratchet seat 1 is provided with a locking buckle assembly 4 that controls the movement of the button.

[0027] By setting the engagement connection between the concave hole 19 and the protrusion 18, the inner plug 14 connects the ratchet seat 1 and the cantilever tube 5. Thus, by rotating the ratchet seat 1, the cantilever tube 5 is driven to rotate. At the same time, by using the plug-in locking buckle of the ratchet belt 2 on the locking assembly 3, the position of the ratchet belt 2 is fixed by the cooperation of the wrench and the ratchet, so as to achieve the purpose of binding and connecting one end of the retainer. The opening and closing of the ratchet belt 2 is controlled by using the button to control the angle of the wrench. By setting the locking assembly 4 to restrict the button, the arbitrary opening and closing is prevented.

[0028] The locking assembly 4 and the fastening assembly 3 are mature and common structures in this field, and will not be described in detail.

[0029] The clamping assembly includes a convex chuck 6 and a concave chuck 8 that are elastically separated by a rotating shaft 7 and a torsion spring 13. The convex chuck 6 and the concave chuck 8 are rotatably connected by the rotating shaft 7, and torsion springs 13 are provided at both ends of the rotating shaft 7 to drive the convex chuck 6 and the concave chuck 8 to rotate and separate relative to each other.

[0030] The relative rotational separation of the convex clamp 6 and the concave clamp 8 is achieved by using the torsion spring 13, which facilitates the clamping operation. Under the action of the torsion spring 13, automatic opening can be achieved.

[0031] A convex clamp 6 is fixed to one end of the cantilever pipe 5. A threaded rod 11 extending from the convex clamp 6 is provided to connect the cantilever pipe 5. A welding seat 9 is provided in the inner cavity of the end of the cantilever pipe 5 near the convex clamp 6. The threaded rod 11 is fixed on the welding seat 9. The threaded rod 11 passes through the convex clamp 6 and extends into the inner cavity between the convex clamp 6 and the concave clamp 8. A pipe plug 10 is provided at the end of the cantilever pipe 5. A mounting plate 15 that fits against the welding seat 9 is provided at the end of the threaded rod 11. The pipe plug 10 and the mounting plate 15 are fixed to the welding seat 9 by fastening bolts 20.

[0032] By setting up the welding seat 9 and the fastening bolt 20, the lead screw 11 and the convex clamp 6 are installed on the cantilever pipe 5.

[0033] An upwardly inclined plate 17 is provided in the inner cavity of the concave chuck 8. A T-nut 12 is threadedly connected to the end of the lead screw 11. The lower end of the horizontal plate at the end of the T-nut 12 is horizontally aligned with the inclined surface of the inclined plate 17. A threaded through hole 21 is provided through the T-nut 12. The lead screw 11 is threadedly rotated through the threaded through hole 21. A retaining ring 16 is provided at the end of the lead screw 11. An arc surface is provided on the side of the horizontal plate at the end of the T-nut 12 that faces the inclined plate 17.

[0034] By utilizing the rotation of the end of the lead screw 11 on the threaded through hole 21, the lateral movement of the T-nut 12 is realized, thereby controlling the lateral compression of the T-nut 12 against the inclined plate 17, achieving the purpose of controlling the rotation and clamping of the concave chuck 8. By setting the retaining ring 16, the T-nut 12 is prevented from falling off the end of the lead screw 11. By setting it as an arc surface, the compression area is increased.

[0035] Working principle: Under the action of torsion spring 13, the relative rotation of the convex chuck 6 and the concave chuck 8 separates the clamping assembly, which is initially kept in an unfolded state for easy clamping and installation. After installation, the ratchet seat 1 is rotated to drive the cantilever tube 5 to rotate, and the cantilever tube 5 drives the lead screw 11 to rotate. The rotation of the end of the lead screw 11 on the threaded through hole 21 realizes the lateral movement of the T-nut 12.

[0036] When the T-nut 12 presses against the inclined plate 17, it drives the concave clamp 8 to rotate and close with the convex clamp 6, thus achieving stable clamping.

[0037] When the T-nut 12 moves away from the inclined plate 17, the convex chuck 6 and the concave chuck 8 separate relative to each other under the restoring force of the torsion spring 13.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A retainer comprising a cantilever tube (5), wherein both ends of the cantilever tube (5) are respectively provided with a clamping assembly that is clamped by a convex clamp (6) and a concave clamp (8) in relative closure, and a binding assembly that is bound together by a ratchet belt (2), characterized in that: The clamping assembly includes a convex clamp (6) and a concave clamp (8) that achieve relative elastic rotational separation through the cooperation of a rotating shaft (7) and a torsion spring (13). The convex clamp (6) is fixed to one end of the cantilever tube (5). A lead screw (11) for connecting the cantilever tube (5) extends from the convex clamp (6). An upwardly inclined plate (17) is provided in the inner cavity of the concave clamp (8). A T-nut (12) is threadedly connected to the end of the lead screw (11). The lower end of the horizontal plate at the end of the T-nut (12) is horizontally aligned with the inclined surface of the inclined plate (17).

2. The retainer according to claim 1, characterized in that: The binding assembly includes a ratchet seat (1), one end of the cantilever tube (5) is provided with an inner plug (14), the end of the inner plug (14) is provided with a recess (19), the cantilever tube (5) is inserted into the ratchet seat (1), and the ratchet seat (1) is provided with a protrusion (18) that engages with the recess (19).

3. A retainer according to claim 2, characterized in that: The ratchet seat (1) is provided with a sleeve and a locking assembly (3). One end of the ratchet belt (2) is rotatably mounted on the sleeve, and the other end of the ratchet belt (2) is fixed on the locking assembly (3).

4. A retainer according to claim 3, characterized in that: The locking assembly (3) includes a wrench that engages with the ratchet on the ratchet belt (2) and a button that controls the relative rotation of the wrench. The ratchet seat (1) is provided with a locking assembly (4) that controls the movement of the button.

5. A retainer according to claim 1, characterized in that: The convex clamp (6) and the concave clamp (8) are rotatably connected by a rotating shaft (7). Both ends of the rotating shaft (7) are provided with torsion springs (13) that drive the convex clamp (6) and the concave clamp (8) to rotate relative to each other and separate. The inner cavity of the cantilever tube (5) near the convex clamp (6) is provided with a welding seat (9). A lead screw (11) is fixed on the welding seat (9). The lead screw (11) passes through the convex clamp (6) and extends into the inner cavity between the convex clamp (6) and the concave clamp (8).

6. A retainer according to claim 5, characterized in that: The end of the cantilever pipe (5) is provided with a pipe plug (10), and the end of the screw (11) is provided with a mounting plate (15) that fits against the welding seat (9). The pipe plug (10) and the mounting plate (15) are fixed to the welding seat (9) by fastening bolts (20).

7. A retainer according to claim 6, characterized in that: The T-nut (12) has a threaded through hole (21) through it, and the screw (11) rotates through the threaded through hole (21). A retaining ring (16) is provided at the end of the screw (11).

8. A retainer according to claim 7, characterized in that: The end plate of the T-nut (12) has an arc surface on the side facing the inclined plate (17).

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