Locking hook
By designing a matching limiting surface and abutment in the locking hook, the structural strength is enhanced, solving the problem of easy deformation under stress in existing locking hooks, and achieving higher safety and stability.
Patent Information
- Application Number
- CN202520042153.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-08
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-01-08
AI Technical Summary
The existing locking hook's switch structure is prone to deformation under stress, which can cause the latch to open unexpectedly, making it unsafe to use.
A locking hook structure comprising a hook body, a latch, and a switching element was designed. By cooperating with the limiting surface and the stop, the latch is prevented from pivoting, thereby enhancing the structural strength and preventing the latch from being accidentally opened.
The strength and safety of the locking hook have been improved, ensuring that the lock will not open accidentally when subjected to large external forces, making it safer and more reliable to use.
Smart Images
Figure CN223676766U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a hanger, in particular to a locking hook with improved strength and safety. BACKGROUND
[0002] The existing locking hook is pivoted with a lock catch, the free end of the lock catch abuts against the free end of the main hook, and the lock catch can open the main hook after pivoting, forming an opening between the free ends of the main hook and the lock catch.
[0003] To avoid accidental opening of the lock catch of the locking hook, some manufacturers design an abutting portion on the lock catch, pivot a switch on the locking hook, and form another abutting portion on the switch. Before pivoting, the switch can limit the pivoting action of the lock catch by the contact of the two abutting portions, and after pivoting, the switch can release the lock catch, allowing the lock catch to freely pivot. The above structure avoids accidental opening of the lock catch of the locking hook.
[0004] However, the above-mentioned locking hook with a switch has a structure that is not solid but folded from sheet metal, so that when the abutting portion of the switch blocks the abutting portion of the lock catch, it may be deformed and open if subjected to a large force. Therefore, it cannot be ensured that the lock catch of the locking hook will not accidentally open due to bearing a large external force, making the existing locking hook with a switch still not safe enough in use. SUMMARY
[0005] Therefore, the purpose of the utility model is to provide a locking hook with improved strength by structural design of the switch element, so that the lock catch of the locking hook will not accidentally open when bearing a large external force, making it safer in use.
[0006] To achieve the above object, the utility model provides a kind of lock hook, including a hook body, a lock and a switch element.The hook body includes sequentially connected a hook part, a pivot segment and a base portion;The hook part has a first free end;The pivot segment has a first pivot portion and a second pivot portion.The lock has a resisting portion in the middle and two ends respectively have a lock pivot portion and a second free end, the lock pivot portion is connected in the first pivot portion so that the lock can be pivoted between a first position and a second position;When the lock is in the first position, the second free end is in contact with the first free end.The switch element is connected in the second pivot portion and can be pivoted between a third position and a fourth position;The switch element has two side arms and a connecting arm connected between the two side arms;The part of the two side arms connected to the connecting arm and the connecting arm form a limiting surface together;When the switch element is in the third position, the limiting surface is located on the path of the resisting portion along with the lock pivoted from the first position to the second position, so that the lock is in contact with the resisting portion at the beginning of the lock pivoted from the first position to the second position to block the pivoting action of the lock;When the switch element is in the fourth position, the limiting surface is turned away from the position that can block the pivoting action of the lock.
[0007] The effect of the utility model lies in that when external force pushes and the lock wants to pivot inward, the limiting surface of the limiting member is pressed by the resisting portion of the lock, the limiting member connects the two side arms through the connecting arm, so that the two side arms are not opened when stressed, the limiting member has better strength, and the limiting surface can be always supported by the structure with better supporting force to block the pivoting action of the lock, the situation that the lock is accidentally opened due to the damage of the limiting member when the lock bears larger force can be avoided, and the lock hook is safer in hanging use. BRIEF DESCRIPTION OF DRAWINGS
[0008] Figure 1 It is the perspective view of a preferred embodiment of the utility model.
[0009] Figure 2 It is the exploded view of the above preferred embodiment of the utility model.
[0010] Figure 3 It is the perspective view of another angle of the above preferred embodiment of the utility model.
[0011] Figure 4 It is the side view of the above preferred embodiment of the utility model.
[0012] Figure 5 It is Figure 4 the sectional view of 5-5 direction.
[0013] Figure 5A Fig. 5A is a top view of the preferred embodiment of the present application. Figure 5 Fig. 5B is a magnified view of the area marked 5A in Fig. 5A.
[0014] Figure 6 Fig. 6A is a top view of the preferred embodiment of the present application.
[0015] Figure 7 Fig. 6B is a magnified view of the area marked 6A in Fig. 6A. Figure 6 Fig. 7A is a sectional view along the direction of 7-7 in Fig. 6A.
[0016] Figure 8 Fig. 7B is a magnified view of the area marked 7A in Fig. 7A. Figure 7 Fig. 8A is a side view of the action of the switch element in Fig. 6A pivoting from the third position to the fourth position.
[0017] Figure 9 Fig. 8B is a magnified view of the area marked 8A in Fig. 8A. Figure 8 Fig. 9A is a side view of the action of the lock catch in Fig. 6A pivoting from the first position to the second position.
[0018] BRIEF DESCRIPTION OF THE DRAWINGS
[0019] 100: locking hook
[0020] 10: hook body
[0021] 12: hook portion
[0022] 121: first free end
[0023] 14: pivoting section
[0024] 141: first pivoting portion
[0025] 142: second pivoting portion
[0026] 143: protruding ring
[0027] 16: base portion
[0028] 161: hanging ring hole
[0029] 20: lock catch
[0030] 22: lock catch side plate
[0031] 221: lock catch pivoting portion
[0032] 24: lock catch bottom plate
[0033] 241: second free end
[0034] 26: abutting portion
[0035] 261: abutting plate
[0036] 262: bent section
[0037] 263: abutting surface
[0038] 28: lock catch pivot
[0039] 30: switch element
[0040] 32: pressing handle
[0041] 321: pressing handle side plate
[0042] 322: pressing handle bottom plate
[0043] 323: switch element pivot joint
[0044] 324: slot
[0045] 325: raised portion
[0046] 34: limiting member
[0047] 341: side arm
[0048] 342: connecting arm
[0049] 343: side arm shaft hole
[0050] 36: switch element pivot
[0051] A: let groove
[0052] B: limiting surface
[0053] C: gap
[0054] O: opening
[0055] P1: first position
[0056] P2: second position
[0057] P3: third position
[0058] P4: fourth position
[0059] S1: first return spring
[0060] S2: second return spring DETAILED DESCRIPTION
[0061] In order to more clearly illustrate the present application, the preferred embodiments are described in detail below with reference to the accompanying drawings. Please refer to Figures 1 to 5A Fig. 1 shows a preferred embodiment of the present application, which is a locking hook 100, comprising a hook body 10, a lock catch 20, and a switch element 30, wherein:
[0062] Please refer to Figures 1 to 3As shown, the hook body 10 includes a hook portion 12, a pivot section 14, and a base portion 16 connected in sequence. The hook portion 12 has an outer layer of insulating material and a first free end 121, which, in this preferred embodiment, is a bent hook. The pivot section 14 is an elongated plate and has a first pivot portion 141 adjacent to the base portion 16. The portion of the pivot section 14 adjacent to the hook portion 12 has a second pivot portion 142. In this preferred embodiment, the first pivot portion 141 is a shaft hole and has a raised ring 143 formed around each end. The second pivot portion 142 is also a shaft hole. The base portion 16 has a hanging ring hole 161, and the portions of the base portion 16 adjacent to the pivot section 14 have an outer layer of insulating material.
[0063] Please refer to Figures 2 to 5 and Figure 7 As shown, the latch 20 has an outer layer of insulating material and includes two latch side plates 22, a latch base plate 24, and a stop portion 26. One end of each of the two latch side plates 22 is located on both sides of the first pivot portion 141, and a latch pivot portion 221 is formed at one end of each of the two latch side plates 22. In this preferred embodiment, the latch pivot portion 221 is a shaft hole and the latch pivot portion 221 is directly opposite the first pivot portion 141. A latch pivot 28 passes through the first pivot portion 141 and the latch pivot portion 221. Therefore, one end of the latch 20 is pivotally connected to the first pivot portion 141. The end edge of each of the protruding rings 143 abuts against the inner surface of one end of each of the latch side plates 22, and a groove A is formed between one end of each of the latch side plates 22 and the surface of the pivot portion 14.
[0064] The latch base plate 24 is connected between the two latch side plates 22 on the side opposite to the switch element 30. The latch base plate 24 has a second free end 241 at the end away from the latch pivot 28. The second free end 241 is a hook hole and is fastened to the first free end 121 of the hook body 10, such that, overall, the other end of the latch 20 abuts against the first free end 121 of the hook portion 12. The abutment portion 26 includes two abutment plates 261, which are spaced apart and connected to the two latch side plates 22 on the side near the switch element 30. Specifically, the portions of the two abutment plates 261 adjacent to the two latch side plates 22 each form a bent section 262, which are connected at the middle of the two latch side plates 22 on the side near the switch element 30. Abutment surface 263 is formed on the side of the two abutment portions 26 near the switch element 30.
[0065] Thus, the lock bottom plate 24 is arranged in the middle of the lock 20, and the minimum distance between the two lock side plates 22 is smaller than the minimum distance between the two lock side plates 261. A first return spring S1 in a compressed state is arranged between the hook body 10 and the lock 20. Specifically, the two ends of the first return spring S1 are arranged between the pivot section 14 and the lock bottom plate 24. The first return spring S1 provides a biasing force to the lock 20, so that the second free end 241 can be kept in contact with the first free end 121 of the hook body 10 when the closed hook 100 is at rest.
[0066] Referring to Figure 2 and Figures 5 to 7 The switch element 30 includes a pressing handle 32 and a limiting member 34. In the preferred embodiment, the pressing handle 32 is made of plastic material, such as engineering plastic, and includes two pressing handle side plates 321 and a pressing handle bottom plate 322. The two pressing handle side plates 321 are arranged on both sides of the pivot section 14, and one end of each of the two pressing handle side plates 321 is formed with a switch element pivot section 323, which is a shaft hole and is opposite to the second pivot section 142. The two pressing handle side plates 321 are provided with two symmetrical insertion grooves 324, one end of each of the insertion grooves 324 is an open end and faces the direction of the lock 20, and the other end of each of the insertion grooves 324 leads to the switch element pivot section 323. A protrusion 325 is formed in the middle of the two pressing handle side plates 321, and the space inside the protrusion 325 can accommodate the two lock side plates 261 of the lock 20. The pressing handle bottom plate 322 is connected to the two pressing handle side plates 321 away from the pivot section 14, and is located outside the pivot section 14. One end of the pressing handle bottom plate 322 corresponding to the switch element pivot section 323 is in contact with the outside of the pivot section 14, thereby limiting the amplitude of the outward pivoting of the pressing handle 32 with the switch element pivot section 323 as the center.
[0067] In the preferred embodiment, the limiting member 34 is a metal member with an outer layer of insulating material, and includes two side arms 341 and a connecting arm 342. The two side arms 341 of the limiting member 34 are inserted into the two insertion slots 324 of the pressing handle 32, and one end of the two side arms 341 is connected to the connecting arm 342, which is located between the lock 20 and the pivot segment 14. The portion of the two side arms 341 connected to the connecting arm 342 and the connecting arm 342 together form a limiting surface B. The other end of the two side arms 341 each has a side arm shaft hole 343, which is opposite to the switch element pivot portion 323 and the second pivot portion 142. A switch element pivot shaft 36 is inserted through the second pivot portion 142, the switch element pivot portion 323, and the two side arm shaft holes 343. Thus, the two side arms 341 of the limiting member 34 are combined with the two pressing handle side plates 321, and the switch element 30 is pivoted to the second pivot portion 142 of the hook body 10. When the switch element 30 pivots around the switch element pivot portion 323 and the switch element pivot shaft 36 as the center, the limiting member 34 also rotates with the pivoting of the switch element 30.
[0068] In the preferred embodiment, the limiting surface B is the two abutting surfaces 263 of the abutting portion 26, and there is a gap C between the limiting surface B and the two abutting surfaces 263. The gap C is provided so that when the switch element 30 pivots inward around the switch element pivot portion 323 and the switch element pivot shaft 36 as the center, the limiting surface B does not interfere with the two abutting surfaces 263, thereby avoiding the two abutting surfaces 263 of the abutting portion 26 from limiting the pivoting action of the switch element 30. A second return spring S2 in a compressed state can also be abutted between the hook body 10 and the switch element 30. Specifically, the two ends of the second return spring S2 are abutted between the pivot segment 14 and the pressing handle bottom plate 322. The second return spring S2 provides a biasing force to the switch element 30, so that after the switch element 30 is pivoted inward under pressure, the switch element 30 will return to its original position due to the biasing force provided by the second return spring S2 once it is released.
[0069] In addition, the normal line of the limiting surface B substantially passes through the portion of the switch element 30 pivoted to the second pivot portion 142, for example, the normal line of the limiting surface B substantially passes through the switch element pivot 36. In this way, when the lock catch 20 is intended to be pivoted inwardly under external force, the two abutting surfaces 263 abut against the limiting surface B of the switch element 30 at the beginning of the pivoting action of the lock catch 20, but because the force direction of the limiting surface B pressed by the two abutting surfaces 263 substantially passes through the rotation center of the switch element 30 pivoting, at this time the switch element 30 does not pivot and the limiting surface B remains at a fixed position, so that the limiting surface B of the switch element 30 can block the pivoting action of the lock catch 20, thereby limiting the pivoting of the lock catch 20.
[0070] Please refer to Figures 6 to 9 When the above preferred embodiment of the present application is operated, if the lock catch 20 is not limited to pivot by the switch element 30, the lock catch 20 can be pivoted between a first position P1 and a second position P2 with the lock catch pivot 28 as the rotation center. When the latching hook 100 is in a stationary state, the lock catch 20 is located at the first position P1, at this time the second free end 241 abuts against the first free end 121 of the hook body 10. When the lock catch 20 is pivoted from the first position P1 to the second position P2, an opening O is formed between the first free end 121 of the hook body 10 and the lock catch 20.
[0071] When the lock catch 20 is located at the first position P1, the switch element 30 can be pivoted between a third position P3 and a fourth position P4 with the switch element pivot 36 as the rotation center. When the latching hook 100 is in a stationary state, the switch element 30 is located at the third position P3. When the switch element 30 is pivoted from the third position P3 to the fourth position P4, the limiting surface B pivoted with the switch element 30 is turned away from the position of the two abutting surfaces 263 facing the abutting portion 26, and no longer blocks the pivoting action of the lock catch 20 from the first position P1 to the second position P2. In addition, when the switch element 30 is pivoted from the third position P3 to the fourth position P4, the other end of the two pressing handle side plates 321 of the switch element 30 enters the two letting grooves A, thereby avoiding the interference between the two pressing handle side plates 321 and the two lock catch side plates 22, and limiting the pivoting action of the switch element 30.
[0072] Please refer to Figure 1 , Figure 5 and Figure 5AAs shown, the two side arms 341 can continuously maintain the relative position and cannot be spread when the limiting surface B of the limiting member 34 is pressed by the pressing portion 26 of the lock 20, and always abut the pressing portion 26 of the lock 20 in the state of having the strongest supporting force, the two side arms 341 are not easily damaged and cannot be spread, the structure of the limiting member 34 is strong, and when the pivoting action of the lock 20 is blocked, the effect of avoiding the accidental opening of the lock 20 is better. In this way, the locking hook 100 is more safe in hanging use.
[0073] In addition to the preferred embodiment of the switch element 30, the pressing handle 32 can also be a metal structure in addition to being a plastic material; the limiting member 34 is connected to the two sides of the connecting arm 342 through the two side arms 341, and the overall structural strength of the limiting surface B is strengthened, so that the limiting member 34 has better strength compared with the existing structure even if it is made of plastic such as engineering plastic in addition to being a metal structure. In addition to the assembly including the pressing handle 32 and the limiting member 34, the switch element 30 can also be provided as an integrated structure having the functions of the pressing handle and the limiting member in other embodiments.
[0074] The above is only a preferred and feasible embodiment of the utility model, and equivalent changes made according to the specification and claims of the utility model should be included in the patent range of the utility model.
Claims
1. A latch hook, characterized in that The utility model relates to a hook switch element, comprising: a hook body, comprising a hook part, a pivot segment and a base part connected in sequence; the hook part has a first free end; the pivot segment has a first pivot part and a second pivot part; a lock, having a resisting part in the middle and a lock pivot part and a second free end at both ends respectively, the lock pivot part is pivoted on the first pivot part so that the lock can be pivoted between a first position and a second position; when the lock is in the first position, the second free end abuts against the first free end; and a switch element, pivoted on the second pivot part and can be pivoted between a third position and a fourth position; the switch element has two side arms and a connecting arm connected between the two side arms, the part of the two side arms connected to the connecting arm and the connecting arm together form a limiting surface; when the switch element is in the third position, the limiting surface is located on the path of the resisting part with the lock pivoted from the first position to the second position, thereby abutting against the resisting part at the beginning of the lock pivoted from the first position to the second position to block the pivoting action of the lock; when the switch element is in the fourth position, the limiting surface is turned away from the position that can block the pivoting action of the lock.
2. The latch hook of claim 1, wherein The switch element comprises a pressing handle and a limiting piece connected; the pressing handle has a switch element pivot part, the switch element pivot part is pivoted on the second pivot part so that the switch element can be pivoted between the third position and the fourth position; the limiting piece comprises the connecting arm and the two side arms, the other end of the two side arms is combined with the pressing handle.
3. The latch hook of claim 2, wherein, The two sides of the pressing handle have two pressing handle side plates, the two pressing handle side plates are arranged on both sides of the pivot segment, and one end of the two pressing handle side plates forms the switch element pivot part; a pressing handle bottom plate is connected between the sides of the two pressing handle side plates away from the pivot segment; the two side arms of the limiting piece are combined with the two pressing handle side plates, and the connecting arm of the limiting piece is located between the lock and the pivot segment.
4. The latch hook of claim 3, wherein, The second pivot part is a shaft hole; the switch element pivot part is a shaft hole and penetrates one end of the two pressing handle side plates, a switch element pivot shaft is arranged in the second pivot part and the switch element pivot part.
5. The latch hook of claim 4, wherein, The other end of the two side arms respectively has a side arm shaft hole, and the two side arm shaft holes are sleeved on the switch element pivot shaft.
6. The closure hook of claim 5 wherein, The two pressing handle side plates have two symmetrical insertion grooves, one end of each insertion groove is an open end, and the other end leads to the switch element pivot part; the two side arms of the limiting piece are inserted into the two insertion grooves.
7. The latch hook of claim 3, wherein The second pivot part is a shaft hole; the switch element pivot part is a shaft hole and penetrates one end of the two pressing handle side plates; the two pressing handle side plates have two symmetrical insertion grooves, one end of each insertion groove is an open end, and the other end leads to the switch element pivot part; the two side arms of the limiting piece are inserted into the two insertion grooves, and the other end of the two side arms respectively has a side arm shaft hole; a switch element pivot shaft is arranged in the second pivot part, the switch element pivot part and the two side arm shaft holes.
8. The latch hook of claim 3, wherein, The first pivot joint is a shaft hole; the two sides of the lock have two lock side plates, one end of the two lock side plates is located on the two sides of the first pivot joint, a lock bottom plate is connected between the sides of the lock side plates away from the switch element, one end of the two lock side plates forms the lock pivot joint, the lock pivot joint is a shaft hole; a lock pivot shaft is arranged between the first pivot joint and the lock pivot joint.
9. The latch hook of claim 8, wherein, The abutting part includes two abutting plates, the two abutting plates are spaced and connected to the other sides of the two lock side plates close to the switch element.
10. The locking hook as described in claim 9, characterized in that, The portions of the two abutting plates adjacent to the two lock side plates each form a bent section, the two bent sections are connected to the other sides of the two lock side plates close to the switch element; the minimum distance between the two abutting plates is smaller than the minimum distance between the two lock side plates; the periphery of the two ends of the first pivot joint respectively forms a convex ring, the end edge of each convex ring abuts the inner surface of one end of each lock side plate; a gap is respectively formed between one end of each lock side plate and the surface of the pivot section; when the switch element pivots from the third position to the fourth position, a part of the switch element enters the two gaps.