Large-tension hook device

Abstract

The utility model discloses a large-tension hook device, which relates to the technical field of hooks and comprises a shell, a connecting rod, a hook body, an elastic sheet and an upper cover plate fixedly connected with the shell. An inner cavity of the shell is movably connected with a hook body through a connecting rod, the inner cavity of the shell is connected with an elastic piece, the rotating end of the hook body is integrally connected with a cam part, and the bottom end of the cam part is provided with a stop protrusion matched with the elastic piece in an abutting mode. According to actual application requirements, a plurality of elastic pieces can be arranged in the inner cavity of the shell, the elastic pieces are evenly distributed in the shell, the bearing capacity is further improved, meanwhile, pressure is dispersed, it is ensured that the hook body has stable mechanical feedback at different positions through elastic supporting of the elastic pieces, the bearing capacity and impact resistance of the hook device are remarkably improved, and the service life of the hook device is prolonged. Meanwhile, the operation logic is simplified, and the requirement for repeated use in a large-tension scene is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to hook technical field, concretely relates to a big tension hook device. BACKGROUND

[0002] Through the retrieval, the prior art patent document discloses a big tension hook device, and the publication number is CN221120631U, and a big tension hook device is disclosed, relates to hook technical field, including the casing, the inside symmetry of casing is connected with the stop piece, and the inside of casing is provided with the spring piece between the stop piece, the spring piece is centrally arranged in the inside of casing, the inside of casing is rotatably connected with the inner frame, the end of inner frame is rotatably connected with the hook body, the rotating end of hook body is integrally connected with the cam portion, and the bottom end of cam portion is provided with the stop protrusion that abuts with the stop piece. The hook device, by centrally arranging the spring piece in the casing, distributing the stop piece on the two sides of the spring piece, on the one hand, ensure that there is only one contact position between the spring piece and the hook, and the elastic force control is relatively easy, on the other hand, there is the stop piece on both sides, when the hook is stretched out, the stop piece can give the support force to the hook, in addition, one side of the mounting frame can be provided with a bending part for positioning according to the demand, so that the tension of the hook carrying heavy objects can be greatly improved.

[0003] Although the technical scheme disclosed in the above patent document can greatly improve the tension of the hook carrying heavy objects, the technical scheme is not perfect enough, and the prior art adopts the spring arranged in the middle, and a special structure needs to be designed in the middle, thereby causing the relatively complex structure. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of the prior art, the utility model provides a big tension hook device, which meets the tension of the hook body carrying heavy objects, simplifies unnecessary structures and reduces the structural complexity of the hook device.

[0005] To achieve the above object, the utility model is implemented by the following technical scheme:

[0006] A big tension hook device, comprising a casing, a connecting rod, a hook body, a spring piece and an upper cover plate fixedly connected with the casing, an inner cavity of the casing is movably connected with the hook body through the connecting rod, and the inner cavity of the casing is connected with the spring piece, a rotating end of the hook body is integrally connected with a cam portion, and a bottom end of the cam portion is provided with a stop protrusion in abutting cooperation with the spring piece and an outward extension stop portion.

[0007] Further, a clamping groove is formed in the inner cavity wall surface of the casing, and a fixed section of the spring piece is embedded in the clamping groove.

[0008] Further, the inner cavity of the shell is provided with a support, the lower end of the support penetrates the shell and extends to the bottom outer surface of the shell, and the upper end surface of the support is fixedly connected with the inner wall of the shell, and when the hook body is in the storage state, the upper end surface of the support and the outer side surface of the hook body form a horizontal support surface.

[0009] Further, the two sides of the shell and the hook body are provided with shaft holes, the connecting rod penetrates the shaft holes in sequence to assemble the shell and the hook body together, the connecting rod is provided with a large head end, the outer diameter of the large head end is larger than the inner diameter of the shaft hole, and the bottom surface of the upper cover plate is provided with an outwardly extending stop body, and the stop body is located on the side of the large head end of the connecting rod.

[0010] Further, the outer periphery of the cam portion is sequentially provided with a storage anti-rotation portion and a circular arc portion in the clockwise direction.

[0011] Further, the elastic sheet comprises a clamping segment embedded in the clamping groove, a supporting segment extending outward from the clamping segment, and a rotation-stopping clamping segment arranged at the end of the supporting segment.

[0012] Further, when the hook body is in the outward extending state, the outward extending anti-rotation portion and the rotation-stopping clamping segment form surface contact, and when the hook body is in the storage state, the storage anti-rotation portion and the rotation-stopping clamping segment form surface contact.

[0013] Further, the storage anti-rotation portion, the outward extending anti-rotation portion and the rotation-stopping clamping segment are all planes.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] A large-tension hook device is provided, which comprises a shell, a connecting rod, a hook body and an elastic sheet. The inner cavity of the shell is movably connected with the hook body through the connecting rod, and the inner cavity of the shell is connected with the elastic sheet. The rotating end of the hook body is integrally connected with a cam portion, and the bottom end of the cam portion is provided with a stop projection and an outward extending anti-rotation portion which abut against the elastic sheet. According to actual application requirements, multiple elastic sheets can be arranged in the inner cavity of the shell, and the elastic sheets are evenly distributed in the shell, so that the bearing capacity is further improved and the pressure is dispersed. The elastic support of the elastic sheet ensures stable mechanical feedback of the hook body at different positions, significantly improves the bearing capacity and impact resistance of the hook device, simplifies the operation logic, and is suitable for repeated use in large-tension scenarios. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The large-tension hook device (outward extending state) structure diagram is shown.

[0017] Figure 2 The large-tension hook device (outward extending state) exploded structure diagram is shown.

[0018] Figure 3It is shown that the large tension hook device (outward extension state) cross-sectional structure diagram.

[0019] Figure 4 It is shown that the large tension hook device (storage state) structure diagram.

[0020] Figure 5 It is shown that the large tension hook device (storage state) cross-sectional structure diagram.

[0021] Figure 6 It is shown that the shell structure diagram.

[0022] Figure 7 It is shown that the spring structure diagram.

[0023] Figure 8 It is shown that the upper cover plate bottom view structure diagram.

[0024] In the figure: 1, the shell; 2, connecting rod; 3, hook body; 4, spring; 5, upper cover plate; 6, clamping groove; 7, support; 8, shaft hole; 21, large end; 31, cam part; 32, stop protrusion; 33, storage anti-rotation part; 34, circular arc part; 35, outward extension anti-rotation part; 41, clamping section; 42, support section; 43, anti-rotation clamping section; 51, stop body. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0026] Referring to Figures 1-8 The utility model provides a technical scheme: a large tension hook device, including shell 1, connecting rod 2, hook body 3 and spring 4 and with shell 1 fixed connection's upper cover plate 5, the inner chamber of shell 1 is connected with hook body 3 through connecting rod 2, and the inner chamber of shell 1 is connected with spring 4, the rotating end of hook body 3 is integrally connected with cam part 31, and the bottom end of cam part 31 is provided with stop protrusion 32 and outward extension anti-rotation part 35 that abut with spring 4. According to actual application demand, set up multiple spring 4 in the inner chamber of shell 1, by distributing spring 4 equally in shell 1, further improve the bearing capacity and disperse the pressure when the spring 4 elastic support ensures that hook body 3 has stable mechanical feedback in different positions, significantly improve the bearing capacity and impact resistance of the hook device, at the same time, simplify the operation logic, applicable to the repeated use demand under the large tension scene.

[0027] Referring to Figure 6As shown, the inner cavity wall of the shell 1 is provided with a clamping groove 6, and the fixed section of the elastic sheet 4 is embedded in the clamping groove 6. The design of the clamping groove 6 enables the fixed section of the elastic sheet 4 to be firmly embedded in the inner cavity of the shell 1, preventing the elastic sheet 4 from deforming or deviating due to long-term stress through the clamping structure, improving the reliability of the cooperation between the elastic sheet 4 and the hook body 3, and facilitating assembly and maintenance.

[0028] Referring to Figures 4-6 As shown, the inner cavity of the shell 1 is provided with a support 7, the lower end of the support 7 penetrates the shell 1 and extends to the outer surface of the bottom of the shell 1, and the upper end surface of the support 7 is fixedly connected with the inner wall of the shell 1. When the hook body 3 is in the storage state, the upper end surface of the support 7 forms a horizontal support surface with the outer side surface of the hook body 3. The support 7 forms a horizontal support surface when the hook body 3 is stored, ensuring the structural stability in the storage state.

[0029] Referring to Figure 6 , Figure 8 As shown, the shell 1 and the hook body 3 are provided with shaft holes 8 on both sides, and the connecting rod 2 penetrates the shaft holes 8 in sequence to assemble the shell 1 and the hook body 3 together. The connecting rod 2 is provided with a large head end 21, the outer diameter of the large head end 21 is larger than the inner diameter of the shaft hole 8, the bottom surface of the upper cover plate 5 is provided with an outwardly extending stop body 51, and the stop body 51 is located on the side of the large head end 21 of the connecting rod 2. The stop body 51 and the large head end 21 cooperate to prevent the connecting rod 2 from being pulled out of the shell 1 and the hook body 3 during use when the connecting rod 2 is assembled into the upper cover plate 5.

[0030] Referring to Figure 3 , Figure 5 As shown, the outer periphery of the cam portion 31 is provided with a storage anti-rotation portion 33 and a circular arc portion 34 in sequence in the clockwise direction. The three-section design of the storage anti-rotation portion 33, the circular arc portion 34 and the outer extension anti-rotation portion 35 of the cam portion 31 provides clear positioning points for the rotation process of the hook body 3.

[0031] Referring to Figure 3 , Figure 5 , Figure 7 As shown, the elastic sheet 4 includes a clamping section 41 embedded in the clamping groove 6, a support section 42 extending outward from the clamping section 41, and a rotation-stopping clamping section 43 provided at the end of the support section 42. The three-section split structure of the clamping section 41, the support section 42 and the rotation-stopping clamping section 43 of the elastic sheet 4 takes into account the functions of fixation, elastic deformation and locking. The extension design of the support section 42 enhances the fatigue resistance of the elastic sheet, and the face contact between the rotation-stopping clamping section 43 and the cam portion further optimizes the stress distribution.

[0032] Referring to Figure 3 , Figure 5As shown, the hook body 3 is in the extended state, the outer extension anti-rotation part 35 forms a surface contact with the anti-rotation clamping section 43; the hook body 3 is in the storage state, the storage anti-rotation part 33 forms a surface contact with the anti-rotation clamping section 43. The storage anti-rotation part 33, the outer extension anti-rotation part 35 and the anti-rotation clamping section 43 are all flat surfaces.

[0033] In use, an outward rotation force is applied to the hook body 3, so that the hook body 3 rotates counterclockwise around the connecting rod 2, the cam part 31 of the hook body 3 is in contact with the elastic sheet 4, which provides a smooth transition and reduces the rotation resistance; when the hook body 3 rotates to the fully extended state, the outer extension anti-rotation part 35 of the cam part 31 is in surface contact with the anti-rotation clamping section 43 of the elastic sheet 4, and the stop protrusion 32 also synchronously abuts against the elastic sheet 4, so that the hook body 3 can bear the heavy load through the elastic sheet 4. When not in use, an inward rotation force is applied to the hook body 3, so that the hook body 3 rotates clockwise around the connecting rod 2, the storage anti-rotation part 33 of the cam part 31 is in surface contact with the anti-rotation clamping section 43 of the elastic sheet 4, so that the hook body 3 is stored in the inner cavity of the shell 1, and the upper end surface of the support 7 forms a horizontal support surface with the side surface of the hook body 3.

Claims

1. A large tension hook device, comprising a shell (1), a connecting rod (2), a hook body (3), a spring (4), and an upper cover plate (5) fixedly connected with the shell (1); characterized in that, The inner cavity of the shell (1) is movably connected with a hook body (3) through a connecting rod (2), and the inner cavity of the shell (1) is connected with an elastic sheet (4), the rotating end of the hook body (3) is integrally connected with a cam portion (31), the bottom end of the cam portion (31) is provided with a stop protrusion (32) and an outward stop rotation portion (35) which abut against the elastic sheet (4).

2. The high-tension hook device of claim 1, wherein The inner cavity wall of the shell (1) is provided with a clamping groove (6), and the fixed section of the elastic sheet (4) is embedded in the clamping groove (6).

3. The high-tension hook device of claim 1, wherein, The inner cavity of the shell (1) is provided with a supporting piece (7), the lower end of the supporting piece (7) penetrates through the shell (1) and extends to the bottom outer surface thereof, and the upper end surface of the supporting piece (7) is fixedly connected with the inner wall of the shell (1), when the hook body (3) is in the storage state, the upper end surface of the supporting piece (7) and the outer side surface of the hook body (3) form a horizontal supporting surface.

4. The high-tension hook device of claim 1, wherein, Corresponding shaft holes (8) are formed on the two sides of the shell (1) and the hook body (3), the connecting rod (2) penetrates through the shaft holes (8) in sequence to assemble the shell (1) and the hook body (3) together, the connecting rod (2) is provided with a large head end (21), the outer diameter of the large head end (21) is larger than the inner diameter of the shaft hole (8), and the bottom surface of the upper cover plate (5) is provided with an outwardly extending stop body (51), which is located on the side of the large head end (21) of the connecting rod (2).

5. The high-tension hook device of claim 1, wherein, The outer periphery of the cam portion (31) is sequentially provided with a storage stop rotation portion (33) and a circular arc portion (34) in the clockwise direction.

6. The high-tension hook device of claim 1, wherein, The elastic sheet (4) comprises a clamping section (41) embedded in the clamping groove (6), a supporting section (42) extending outward from the clamping section (41), and a stop rotation clamping section (43) provided at the end of the supporting section (42).

7. A high-tension hook device according to claim 6, characterized in that When the hook body (3) is in the outward extending state, the outward stop rotation portion (35) forms a surface contact with the stop rotation clamping section (43), and when the hook body (3) is in the storage state, the storage stop rotation portion (33) forms a surface contact with the stop rotation clamping section (43).

8. The high-tension hook device of claim 7, wherein, The storage stop rotation portion (33), the outward stop rotation portion (35) and the stop rotation clamping section (43) are all flat surfaces.

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