Security bracket with rotating release structure

Abstract

The utility model discloses a security bracket with a rotating release structure. The pawl is movably mounted on the base and used for being matched with the rack to support and limit the rack; the torsional spring is used for pushing the pawl to enable the pawl to tend to be in a compressed state; the positioning plate is arranged on the base and used for limiting the position of the pawl; the safety pin is movably mounted on the base, matched with the rack and used for protecting the position of the rack; and the hand wheel is connected with the pawl and used for driving the pawl to rotate. According to the utility model, the pawl is extruded by the torsional spring so as to tend to be in a compressed state all the time, and the pawl is automatically reset and compressed by the reset force of the torsional spring after being opened by pressure, so that the stability of the pawl when supporting the rack is ensured, and the pawl is prevented from being easily separated; meanwhile, through the arrangement of the hand wheel, when the pawl is driven to rotate, the pawl can be driven to rotate to be opened only by rotating the hand wheel, operation is easy and convenient, and the movement stroke is not limited by the action stroke of the operation end.

Description

TECHNICAL FIELD

[0001] The utility model relates to a security support, in particular to a security support with rotating release structure. BACKGROUND

[0002] The security support usually comprises a base, a rack and a pawl; the existing security support will additionally add a safety pin on the basis of the support of the pawl as a supporting piece, and the safety pin is inserted through the base and the rack to play a safety protection role; and in the prior art, the pawl and the handle of the security support are directly connected, and the handle is used as a lifting handle and a device for releasing the pawl; this leads to frequent misoperation of the user during use, that is, the user directly pulls the support without putting down the rack, so that the rack falls into the base instantaneously, which may cause hand injury of the user. Therefore, the security support with rotating release structure is provided. SUMMARY

[0003] The utility model aims at solving the above problems and provides a security support with rotating release structure.

[0004] In order to achieve the above purpose, the utility model provides a security support with rotating release structure, which comprises a base, a rack movably installed on the base, a support seat arranged on the rack, a pawl movably installed on the base and used for cooperating with the rack to support and limit the rack, a torsion spring arranged on the base and used for pushing the pawl to a compressed state, a positioning plate arranged on the base and used for limiting the position of the pawl, a safety pin movably installed on the base and used for cooperating with the rack to protect the position of the rack, and a hand wheel connected with the pawl and used for driving the pawl to rotate.

[0005] Further preferably, the security support further comprises a chain assembly installed on the base, the chain assembly comprising a chain, a buckle ring connected to both ends of the chain, and a bolt connected to one side of the buckle ring, one end of the chain being connected to the safety pin through the buckle ring, and the other end of the chain being connected to the safety pin through the bolt.

[0006] Further preferably, the security support further comprises a buckle ring installed on the chain and used for connecting with the base.

[0007] Further preferably, the security support further comprises a handle movably installed on the base.

[0008] Further preferably, the security support further comprises a flat head screw installed on the base and protruding from the base at one end, and an elastic washer installed between the flat head screw and the base, and the rack side edge is provided with a limiting groove matched with the flat head screw to prevent the rack from being pulled out of the base.

[0009] The utility model discloses a beneficial effect: through the setting of torsion spring, through the extrusion of torsion spring to ratchet pawl makes it always tend to compression state, and after being pressed open, will be through the reset force of torsion spring and automatically reset compression, thereby ensure the stability of ratchet pawl when forming support to rack, avoid easily happening to separate, simultaneously through the setting of hand wheel, when driving ratchet pawl to rotate, only need to rotate hand wheel to drive ratchet pawl to rotate and open ratchet pawl, simple and convenient operation and the moving stroke will not be limited by the action stroke of operation end.

[0010] Through the setting of chain assembly, the safety pin is connected with the base, avoiding the problem of loss, through the setting of limiting groove and flat head screw, the up and down moving stroke of rack is limited, avoiding overtravel when moving up and down and causing to fall out, also avoiding the problem of loss due to falling out. BRIEF DESCRIPTION OF DRAWINGS

[0011] ATTACHED Figure 1 It is the structure schematic diagram of the utility model;

[0012] ATTACHED Figure 2 It is the local structure schematic diagram of the utility model;

[0013] ATTACHED Figure 3 It is another visual angle structure schematic diagram of the utility model;

[0014] ATTACHED Figure 4 It is another visual angle structure schematic diagram of the utility model;

[0015] ATTACHED Figure 5 It is the section structure schematic diagram of the utility model;

[0016] ATTACHED Figure 6 It is the local enlarged structure schematic diagram of the utility model in flat head screw place;

[0017] ATTACHED Figure 7 It is the structure schematic diagram of the connection of ratchet pawl and torsion spring in the utility model;

[0018] ATTACHED Figure 8 It is the structure schematic diagram of ratchet pawl in the utility model;

[0019] ATTACHED Figure 9 It is another visual angle structure schematic diagram of ratchet pawl in the utility model.

[0020] Legend: 1, base; 2, rack; 3, support seat; 4, ratchet pawl; 5, torsion spring; 6, positioning plate; 7, safety pin; 8, hand wheel; 9, chain; 10, buckle ring; 11, bolt; 12, handle; 13, flat head screw; 14, elastic washer; 15, limiting groove. DETAILED DESCRIPTION

[0021] The utility model discloses a security support with rotation release structure further as follows.

[0022] It should be noted that all directional indications such as up, down, left, right, front, back, etc. in the embodiments of the utility model are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture as shown in the drawings, and if the specific posture changes, the directional indications will also change accordingly.

[0023] In the utility model, unless otherwise explicitly specified and limited, the terms "connection", "fixation" and the like should be understood broadly; for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through intermediate medium; can be internal communication of two elements or interaction relationship of two elements, unless otherwise explicitly limited. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0024] Referring to Figures 1-9 The utility model discloses a security support with rotation release structure further as follows, including base 1, movable installation in base 1 on rack 2 and set up in the support seat 3 of rack 2 2, its characterized in that still including movable installation in base 1 for with rack 2 cooperation and to rack 2 the pawl 4 of supporting limit function, for the pawl 4 of driving pawl 4 and make pawl 4 tend to compression state torsion spring 5, set up in base 1 to pawl 4 position the limiting function of positioning plate 6, movable installation in base 1 with rack 2 cooperation and to rack 2 position the safety pin 7 of protection function and with pawl 4 connection for driving pawl 4 and carry out the hand wheel 8 of rotation,

[0025] Through the setting of torsion spring 5, through the extrusion of torsion spring 5 to pawl 4 and make it always tend to compression state, and after being pressed open, will be reset by the reset force of torsion spring 5 and be reset compression, so as to ensure the stability of pawl 4 when forming support to rack 2, avoid easily happening to separate, simultaneously through the setting of hand wheel 8, when driving pawl 4 and carry out rotation, only need to rotate hand wheel 8 to drive pawl 4 and carry out rotation and open pawl 4, simple and convenient operation and the movement stroke will not be limited for the action stroke of the action operation end for driving pawl 4.

[0026] In one embodiment, further comprising the chain 9 assembly installed on the base 1, the chain 9 assembly comprises the chain 9, the clasp 10 connected to both ends of the chain 9 and the bolt 11 connected to one side of the clasp 10, one end of the chain 9 is connected with the safety pin 7 through the clasp 10, and the other end is connected with the safety pin 7 through the bolt 11; further comprising the clasp 10 installed on the chain 9 for connecting with the base 1; through the setting of the chain 9 assembly, the safety pin 7 is connected with the base 1 and integrated, and the problem of loss is avoided.

[0027] In one embodiment, further comprising the handle 12 movably installed on the base 1; through the setting of the handle 12, the security bracket is convenient to carry and take.

[0028] In one embodiment, further comprising the flat head screw 13 installed on the base 1 and protruding from the base 1 and the elastic washer 14 installed between the flat head screw 13 and the base 1, and the side of the rack 2 is provided with the limiting groove 15 matched with the flat head screw 13 to prevent the rack 2 from being pulled out of the base 1;

[0029] Through the setting of the flat head screw 13 and the limiting groove 15, the movement stroke of the rack 2 on the base 1 is limited, the rack 2 is prevented from being pulled out of the base 1 due to overtravel, and the problem that the security bracket cannot be normally used due to the loss of components is avoided.

[0030] When the utility model is used: when used for the first time, the hand wheel 8 is held by hand and rotated counterclockwise, the hand wheel 8 drives the ratchet pawl 4 to rotate counterclockwise until the ratchet pawl 4 is attached to the positioning plate 6 and the rack 2 is inserted, and then the flat head screw 13 and the elastic washer 14 are screwed on the limiting hole of the base 1 after the rack 2 is inserted into the lowest position, and one end of the flat head screw 13 is in the limiting groove 15 of the rack 2; at this time, the rack 2 is assembled;

[0031] When working, as long as the rack 2 is pulled upward, the rack 2 drives the ratchet pawl 4 to rotate counterclockwise through the inclined surface on the tooth, and after the rack 2 is stopped, the ratchet pawl 4 is pressed on the tooth of the rack 2 through the force of the torsional spring 5 to support and fix the position of the rack 2, then the safety pin 7 is inserted into the base 1 and matched with the tooth on the rack 2, and then the bolt 11 on one side of the chain 9 is inserted into the safety pin 7;

[0032] When the rack 2 needs to be lowered, the bolt 11 is pulled out of the safety pin 7, then the safety pin 7 is pulled out of the base 1, the hand wheel 8 is held by hand and rotated counterclockwise, the hand wheel 8 drives the ratchet pawl 4 to rotate counterclockwise until the ratchet pawl 4 is attached to the positioning plate 6, at this time, the ratchet pawl 4 does not block the rack 2, the rack 2 can be lowered, and after the lowering is completed, the hand wheel 8 can be released.

[0033] The protection scope of the utility model is not limited to the above embodiments and transformations. The routine modification and replacement of the skilled in the art based on the content of the embodiments all belong to the protection scope of the utility model.

Claims

1. A security support with a spin release structure, comprising a base (1), a rack (2) movably mounted on the base (1), and a support seat (3) arranged on the rack (2); characterized in that The pawl (4) is movably mounted on the base (1) and cooperates with the rack (2) to support and limit the rack (2); the torsion spring (5) is arranged on the base (1) and is used to push the pawl (4) to a compressed state; the positioning plate (6) is arranged on the base (1) and is used to limit the position of the pawl (4); the safety pin (7) is movably mounted on the base (1) and cooperates with the rack (2) to protect the position of the rack (2); and the hand wheel (8) is connected with the pawl (4) and is used to drive the pawl (4) to rotate.

2. The security support according to claim 1, wherein: The chain (9) assembly is movably mounted on the base (1) and comprises the chain (9), the clasp (10) connected to both ends of the chain (9), and the latch (11) connected to one clasp (10); one end of the chain (9) is connected with the safety pin (7) through the clasp (10), and the other end is connected with the safety pin (7) through the latch (11).

3. The security support according to claim 2, wherein: The clasp (10) is movably mounted on the chain (9) and is used to connect with the base (1).

4. The security support according to claim 1, wherein: The handle (12) is movably mounted on the base (1).

5. The security support according to claim 1, wherein: The flat head screw (13) is movably mounted on the base (1) and protrudes from the base (1); the elastic washer (14) is arranged between the flat head screw (13) and the base (1); the rack (2) is provided with the limiting groove (15) which cooperates with the flat head screw (13) to prevent the rack (2) from being pulled out of the base (1).

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