Mechanical anti-theft fastener

Abstract

The mechanical anti-theft fastener comprises a first fixing ring and a second fixing ring, a fixing block is fixed to the outer wall of the first fixing ring, an insertion block is fixedly connected to the outer wall of the fixing block, an upper groove is formed in one end of the insertion block, and a lower groove is formed in the end, away from the upper groove, of the insertion block; a fastening device is arranged on the outer wall of the second fixing ring, a mounting block is fixed to the top end of the second fixing ring, a first spring is fixed to the top end of the interior of the mounting block, an upper limiting block is fixed to the bottom end of the first spring, a gear penetrates through the inner wall of the mounting block and is rotationally connected with the inner wall of the mounting block, and a sliding groove is formed in the inner wall of the mounting block; the inner wall of the sliding groove is slidably connected with a rack, and through the design of a first spring, an upper limiting block, a pull rod, a gear, the sliding groove and the rack, the inserting block can be rapidly fixed into the mounting block, so that the whole device is fastened, and the using effect of the device is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to a mechanical anti-theft fastener. Background Art

[0002] Anti-theft fasteners are a type of mechanical parts that are used for anti-theft and fastening and are widely used. Anti-theft fasteners have the performance of fixing to prevent theft. Once a qualified anti-theft fastener is locked and tightened, it must be removed destructively. And the locks used on anti-theft fasteners must be fasteners with anti-drilling and anti-pry functions that have passed the inspection of the Ministry of Public Security Inspection Center. Fasteners can be made of different materials, but only fasteners that have passed the standard inspection and obtained the production permit for security products can be called anti-theft fasteners.

[0003] According to a disclosed fastener bin, connecting fasteners of different thicknesses are filled in. The connecting fasteners are such that the thickness of the connecting bands (13a, 13b) increases or decreases according to the rod diameter of the screws (12a, 12b), so that the width of the connecting fasteners (11a, 11b) is constant when viewed from the direction of travel thereof, and the connecting bands (13a, 13b) are engaged with the longitudinal guide grooves (5a), which are formed in the fastener passage of the fastener bin (5) of the screw fastening machine (publication number: CN1321272C). In the above application, the fasteners do not have an anti-theft function, which has a certain impact on the use process, and the disassembly tool is too simple and can be easily replaced by objects of similar shape, thereby opening the fasteners and affecting property safety. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a mechanical anti-theft fastener, which solves the problems raised in the above background technology. To achieve the above purpose, the utility model is implemented through the following technical solutions: a mechanical anti-theft fastener, including a first fixing ring and a second fixing ring, the outer wall of the first fixing ring is fixed with a fixing block, the outer wall of the fixing block is fixedly connected with an insert block, one end of the insert block is provided with an upper groove, and the end of the insert block away from the upper groove is provided with a lower groove;

[0005] The outer wall of the second fixing ring is provided with a fastening device, a mounting block is fixed to the top of the second fixing ring, a first spring is fixed to the inner top of the mounting block, an upper limit block is fixed to the bottom end of the first spring, a gear passes through the inner wall of the mounting block and is rotatably connected, a sliding groove is provided on the inner wall of the mounting block, a rack is slidably connected to the inner wall of the sliding groove, a connecting block is fixedly connected to the outer wall of the rack, and a lower limit block is fixedly connected to the top of the connecting block.

[0006] Preferably, the gear is meshed with the rack, and the upper limit block is located above the lower limit block. The rotation of the gear can drive the rack to move.

[0007] Preferably, a pull rod is fixedly connected to one end of the upper limit block close to the first spring, and the pull rod penetrates and is slidably connected to the outer wall of the mounting block. Pulling the pull rod can drive the upper limit block to move.

[0008] Preferably, the outer wall of the first fixing ring is provided with a clamping device, the outer side of the first fixing ring is fixedly connected with a second spring, and the outer side of the second spring away from the first fixing ring is fixed with an arc-shaped clamping plate. The second spring can support the arc-shaped clamping plate.

[0009] Preferably, a clamping device is also provided on the outer side of the second fixing ring, and the two clamping devices are symmetrically distributed. The clamping device can effectively fix the object.

[0010] Preferably, the arc-shaped clamping plate is made of a flexible material, and a fixing plate is fixed to the outer wall of the arc-shaped clamping plate, and the outer surface of the fixing plate is rough.

[0011] The utility model provides a mechanical anti-theft fastener, which has the following beneficial effects:

[0012] (1) The mechanical anti-theft fastener can quickly fix the insert block inside the mounting block through the design of the first spring, the upper limit block, the pull rod, the gear, the slide groove and the rack, thereby fastening the entire device and greatly improving the use effect of the device.

[0013] (2) The mechanical anti-theft fastener, through the design of the second spring, the arc-shaped clamping plate and the fixing plate, can be used to fasten pipes of different sizes during use, thereby increasing the use range of the overall device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall three-dimensional appearance structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the cross-sectional structure of the mechanical anti-theft fastener of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the fastening device of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the clamping device of the utility model.

[0018] In the figure: 1. first fixing ring; 2. second fixing ring; 3. fixing block; 4. insert block; 5. upper groove; 6. lower groove; 7. fastening device; 71. mounting block; 72. first spring; 73. upper limit block; 74. pull rod; 75. gear; 76. slide groove; 77. rack; 78. connecting block; 79. lower limit block; 8. clamping device; 81. second spring; 82. arc clamping plate; 83. fixing plate. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] Embodiment 1

[0021] See also Figure 1-3 A mechanical anti-theft fastener comprises a first fixing ring 1 and a second fixing ring 2, a fixing block 3 is fixed to the outer wall of the first fixing ring 1, an insert block 4 is fixedly connected to the outer wall of the fixing block 3, an upper groove 5 is formed at one end of the insert block 4, and a lower groove 6 is formed at the end of the insert block 4 away from the upper groove 5;

[0022] The outer wall of the second fixing ring 2 is provided with a fastening device 7, a mounting block 71 is fixed to the top of the second fixing ring 2, a first spring 72 is fixed to the inner top of the mounting block 71, an upper limit block 73 is fixed to the bottom end of the first spring 72, and a pull rod 74 is fixedly connected to one end of the upper limit block 73 close to the first spring 72. Pulling the pull rod 74 can drive the upper limit block 73 to move, and the pull rod 74 passes through and is slidably connected to the outer wall of the mounting block 71, and a gear 75 passes through and is rotatably connected to the inner wall of the mounting block 71. The gear 75 meshes with the rack 77, and the rotation of the gear 75 can drive the rack 77 to move, and the upper limit block 73 is located above the lower limit block 79, and a sliding groove 76 is provided on the inner wall of the mounting block 71. The inner wall of the sliding groove 76 is slidably connected to the rack 77, and the outer wall of the rack 77 is fixedly connected to a connecting block 78, and the top of the connecting block 78 is fixedly connected to the lower limit block 79.

[0023] When in use, the first fixing ring 1 is brought closer to the second fixing ring 2, the insert block 2 is inserted into the mounting block 71, the insert block 4 squeezes the upper limit block 73, the upper limit block 73 squeezes the first spring 72, the upper limit block 73 is inserted into the upper groove 5, the gear 75 is rotated, the gear 75 rotates to drive the rack 77 to move, and the rack 77 drives the lower limit block 79 through the connecting block 78 to be inserted into the lower groove 6.

[0024] Embodiment 2

[0025] See also Figure 1-4On the basis of the first embodiment, a clamping device 8 is also provided on the outer side of the second fixing ring 2, and the clamping device 8 can effectively fix the object, and the two clamping devices 8 are symmetrically distributed. The outer wall of the first fixing ring 1 is provided with a clamping device 8, and the outer side of the first fixing ring 1 is fixedly connected with a second spring 81, and the second spring 81 can support the arc-shaped clamping plate 82. The outer side of the second spring 81 away from the first fixing ring 1 is fixed with an arc-shaped clamping plate 82, and the arc-shaped clamping plate 82 is made of a flexible material, and the outer wall of the arc-shaped clamping plate 82 is fixed with a fixing plate 83, and the outer surface of the fixing plate 83 is rough.

[0026] When in use, on the basis of Example 1, the arc-shaped clamping plates 82 on both sides clamp the object, the fixing plate 83 fits with the object to increase the friction, the arc-shaped clamping plate 82 squeezes the second spring 81, and the second spring 81 supports the arc-shaped clamping plate 82, thereby driving the arc-shaped clamping plate 82 to clamp and fix the object.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A mechanical anti-theft fastener, comprising a first fixing ring (1) and a second fixing ring (2), characterized in that: A fixing block (3) is fixed to the outer wall of the first fixing ring (1), an insert block (4) is fixedly connected to the outer wall of the fixing block (3), an upper groove (5) is formed at one end of the insert block (4), and a lower groove (6) is formed at the end of the insert block (4) away from the upper groove (5); The outer wall of the second fixing ring (2) is provided with a fastening device (7), the top of the second fixing ring (2) is fixed with a mounting block (71), the inner top of the mounting block (71) is fixed with a first spring (72), the bottom of the first spring (72) is fixed with an upper limit block (73), the inner wall of the mounting block (71) is penetrated by a gear (75) and is rotatably connected, the inner wall of the mounting block (71) is provided with a sliding groove (76), the inner wall of the sliding groove (76) is slidably connected with a rack (77), the outer wall of the rack (77) is fixedly connected with a connecting block (78), and the top of the connecting block (78) is fixedly connected with a lower limit block (79).

2. A mechanical anti-theft fastener according to claim 1, characterized in that: The gear (75) is meshed with the rack (77), and the upper limit block (73) is located above the lower limit block (79).

3. A mechanical anti-theft fastener according to claim 1, characterized in that: One end of the upper limit block (73) close to the first spring (72) is fixedly connected to a pull rod (74), and the pull rod (74) passes through and is slidably connected to the outer wall of the mounting block (71).

4. A mechanical anti-theft fastener according to claim 1, characterized in that: The outer wall of the first fixing ring (1) is provided with a clamping device (8), the outer side of the first fixing ring (1) is fixedly connected with a second spring (81), and the outer side of the second spring (81) away from the first fixing ring (1) is fixed with an arc-shaped clamping plate (82).

5. A mechanical anti-theft fastener according to claim 4, characterized in that: A clamping device (8) is also provided on the outer side of the second fixing ring (2), and the two clamping devices (8) are symmetrically distributed.

6. A mechanical anti-theft fastener according to claim 4, characterized in that: The arc-shaped clamping plate (82) is made of a flexible material, and a fixing plate (83) is fixed to the outer wall of the arc-shaped clamping plate (82), and the outer surface of the fixing plate (83) is rough.

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