Extensible crowbar with quick-connection positioning and locking structure

Abstract

The utility model relates to an extendable crowbar with a quick-connection positioning and locking structure, which belongs to the technical field of crowbars and comprises at least one section of crowbar rod, two adjacent crowbars extend by adopting a direct or indirect structure, a crowbar head is arranged at the front end of the crowbar rod, and a positioning and locking component is arranged between the crowbar rod and the crowbar head. And the positioning and locking assembly comprises a quick lock catch. The connecting joints arranged between the two adjacent pinch bars are used for indirectly connecting and extending, and the connecting joints adopt threaded joints or quick-change structure joints to lengthen and fix the pinch bars; the rear end of the pinch bar is provided with at least one extension bar for direct connection and extension. The device has the characteristics of simple structure, convenience in use and good connection stability. The problem that the prying chisel head slips, rotates or falls off in the using process of the crowbar is solved. And meanwhile, the extension of the length of the pinch bar is met, and a single-section structure is adopted when the space is limited and needs to be shortened. When a force lever is needed to be used, a multi-section structure is adopted for extension.

Description

TECHNICAL FIELD

[0001] The utility model relates to pry bar technical field, concretely relates to a kind of extendable pry bar with quick-connection positioning locking structure. BACKGROUND

[0002] Pry bar is the leverage principle to let heavy object overcome gravity, and the heavy object is lifted from the ground and displaced, in construction site, machinery maintenance, metal structure manufacturing and cargo handling, pry bar is more commonly used hand tool.In daily use, pry bar needs to be replaced, but the pry head is inserted into the structure, which is easy to slip or fall off during use. SUMMARY

[0003] The utility model mainly solves the deficiency existing in prior art, provide a kind of extendable pry bar with quick-connection positioning locking structure, it has the characteristics such as simple structure, convenient to use and good connection stability.Solve the problem that pry head slips or falls off during use of pry bar.Meanwhile meet the extension of pry bar length, when space is limited and needs to be shortened, single-section structure is used.When power lever is used, multi-section structure is used to extend.

[0004] The above technical problems of the utility model are mainly solved by the following technical solutions:

[0005] A kind of extendable pry bar with quick-connection positioning locking structure, including at least one section pry bar, two adjacent pry bar is extended using direct or indirect structure, the pry bar head is provided at the front end of pry bar, and the pry bar head is provided with positioning locking assembly between pry bar;The positioning locking assembly includes quick lock.

[0006] As preferred, the connecting joint between the two adjacent pry bars is indirectly connected and extended, the connecting joint is a threaded joint or a quick-change structure joint for lengthening and fixing the pry bar;The rear end of pry bar is provided with at least one section of lengthening rod for direct connection and extension.

[0007] As preferred, the lengthening rod and pry bar, and the two adjacent lengthening rods are provided with positioning locking assembly.The positioning locking assembly includes quick lock, the front end of pry bar and the front end of lengthening rod are provided with guide sliding groove for quick lock sliding positioning, the rear end of pry bar head, pry bar and lengthening rod are all provided with limit slot for inserting and locking with quick lock.

[0008] As preferred, the quick lock includes locking piece, the locking piece is provided with waist slot, and the locking piece is provided with screw penetrating through the waist slot and threadedly connected with pry bar and lengthening rod.

[0009] As preferred, one end or both ends of the crowbar rod is provided with an internally threaded hole; one end of the extension rod is provided with an internally threaded hole, and the other end of the extension rod is provided with an externally threaded joint; both ends of the connecting joint are provided with an externally threaded joint.

[0010] As preferred, the crowbar head comprises a crowbar head connecting block, the front end of the crowbar head connecting block is provided with a nail starting flat head integrated with the crowbar head connecting block, and the crowbar head connecting block and the crowbar rod are provided with an externally threaded joint fixedly sleeved with an internally threaded hole in a threaded manner.

[0011] As preferred, both ends of the externally threaded joint are provided with a sealing ring embeddedly sleeved with the externally threaded joint. The sealing ring plays a role in preventing the loosening of the thread.

[0012] As preferred, the crowbar head is a round head structure, a flat head structure, a pointed head structure, a structure with a blade or a structure without a blade. The nail starting flat head and the crowbar head connecting block are in a straight rod structure, an acute angle structure or a right angle structure.

[0013] As preferred, the front end of the nail starting flat head is provided with a nail starting groove, and the rear part of the end face of the nail starting flat head is provided with a light weight groove.

[0014] As preferred, the crowbar rod and the extension rod are both hollow pipe structures.

[0015] The utility model can achieve the following effects:

[0016] The utility model discloses a kind of extendable crowbar with quick-connection positioning locking structure, compared with prior art, with the characteristics of simple structure, convenient to use and good connection stability.It solves the problem of slippage rotation or falling of crowbar head during use of crowbar.Meanwhile, the extension of crowbar length is met, when space is limited and needs to be shortened, single-section structure is used.When power lever is used, multi-section structure is used to extend. DRAWINGS

[0017] Figure 1 It is the direct extension structure schematic diagram of the utility model.

[0018] Figure 2 It is the indirect extension structure schematic diagram of the utility model.

[0019] Figure 3 It is the structure sectional view of the crowbar rod in the utility model.

[0020] Figure 4 It is the structure sectional view of the extension rod in the utility model.

[0021] Figure 5 It is the structure sectional view of the connecting joint in the utility model.

[0022] Figure 6 This is a schematic diagram of the connection state structure of the positioning and locking component in this utility model.

[0023] Figure 7 This is a schematic diagram of the separated state structure of the positioning and locking component in this utility model.

[0024] Figure 8 This is a schematic diagram of the straight rod structure of the nail-lifting pry head in this utility model.

[0025] Figure 9 This is a schematic diagram of the acute-angled nail-picking pry head structure in this utility model.

[0026] Figure 10 This is a schematic diagram of the right-angled nail-picking pry head structure in this utility model.

[0027] Figure 11 This is a front view structural diagram of the nail-removing pry head in this utility model.

[0028] Figure 12 This is a schematic diagram of the external threaded connector in this utility model.

[0029] In the diagram: 1. Pry bar head; 2. Positioning and locking assembly; 3. Pry bar rod; 4. Extension rod; 5. Connecting joint; 6. Internal threaded hole; 7. External threaded joint; 8. Quick lock; 9. Guide groove; 10. Limiting groove; 11. Sealing ring; 12. Oval groove; 13. Screw; 14. Locking plate; 15. Nail-pulling flat head; 16. Pry bar connecting block; 17. Nail-pulling groove; 18. Lightweight groove. Detailed Implementation

[0030] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0031] Example: Figures 1-12 As shown, an extendable pry bar with a quick-connect positioning and locking structure includes at least one pry bar rod 3, with internally threaded holes 6 at one or both ends of the pry bar rod 3. Two adjacent pry bar rods 3 are extended directly or indirectly. The front end of the pry bar rod 3 is provided with a pry bar head 1, which can be round, flat, pointed, with a blade, or without a blade. The pry bar head 1 includes a pry bar connecting block 16. The front end of the pry bar connecting block 16 is provided with an integrated nail-removing flat head 15. The front end of the nail-removing flat head 15 is provided with a nail-removing groove 17, and the rear end face of the nail-removing flat head 15 is provided with a lightweight groove 18. The nail-removing flat head 15 and the pry bar connecting block 16 are in a straight rod structure, an acute-angle structure, or a right-angle structure. An externally threaded connector 7, which is threadedly engaged and fixed to the internally threaded holes 6, is provided between the pry bar connecting block 16 and the pry bar rod 3. Both the front and rear ends of the external threaded connector 7 are provided with sealing rings 10 that are snapped into the external threaded connector 7.

[0032] The pry bar rod 3 is provided with a positioning and locking assembly 2 between the pry bar rod 3 and the pry bar head 1, and the positioning and locking assembly 2 comprises a quick lock 8. The connecting joints 5 provided between two adjacent pry bar rods 3 are indirectly connected and extended, the connecting joints 5 are used for lengthening and fixing the pry bar rod 3 in a threaded joint or quick-change structure joint, and the connecting joints 5 are both provided with external thread joints 7. The pry bar rod 3 is provided with at least one lengthening rod 4 at the rear end of the pry bar rod 3 for directly connecting and extending. The pry bar rod 3 and the lengthening rod 4 are both hollow pipe structures. The lengthening rod 4 is provided with an internal thread hole 6 at one end, and the lengthening rod 4 is provided with an external thread joint 7 at the other end. The positioning and locking assembly 2 is arranged between the lengthening rod 4 and the pry bar rod 3 and between two adjacent lengthening rods 4. The positioning and locking assembly 2 comprises the quick lock 8, the quick lock 8 comprises a locking piece 14, the locking piece 14 is provided with a waist circular groove 12, and the locking piece 14 is provided with a screw 13 which is threadedly sleeved and fixed with the pry bar rod 3 and the lengthening rod 4 and penetrates through the waist circular groove 12. The pry bar rod 3 and the lengthening rod 4 are both provided with a guide sliding groove 9 at the front end of the pry bar rod 3 and the lengthening rod 4 for sliding positioning of the quick lock 8, and the pry bar head 1, the pry bar rod 3 and the lengthening rod 4 are all provided with a limiting groove 10 which is inserted and locked with the quick lock 8.

[0033] In summary, the extendable pry bar with the quick-connection positioning and locking structure has the characteristics of simple structure, convenient use and good connection stability. The problem of slippage rotation or falling of the pry head during use of the pry bar is solved. The length of the pry rod can be extended, and when the space is limited and needs to be shortened, a single-section structure is adopted. When a force lever is needed, a multi-section structure is adopted for extension.

[0034] It is apparent for those skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but can be implemented in other concrete forms without departing from the basic characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and thus all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced in the present application. Any reference signs in the claims should not be regarded as limiting the claims to which they relate.

[0035] In summary, the above-described is only a specific embodiment of the present application, but the structural characteristics of the present application are not limited thereto, and any changes or modifications made by those skilled in the art within the field of the present application are covered by the patent scope of the present application.

Claims

1. An extendable crowbar with quick-attach positioning and locking structure, characterized by: The utility model provides a kind of pry bar, including at least one section of pry bar rod (3), two adjacent pry bar rod (3) are extended using direct or indirect structure, the front end of pry bar rod (3) is equipped with pry bar head (1), and pry bar rod (3) is equipped with positioning locking assembly (2) between pry bar head (1);The positioning locking assembly (2) includes quick lock (8).

2. An extendable prying bar with quick attach positioning lock structure according to claim 1, characterized in that: Two adjacent pry bar rod (3) are indirectly connected and extended by being equipped with connecting joint (5), and the connecting joint (5) is used to lengthen and fix pry bar rod (3) by thread joint or quick-change structure joint;The rear end of pry bar rod (3) is equipped with at least one section of lengthening rod (4) to be directly connected and extended.

3. An extendable prying bar with quick attach positioning lock structure according to claim 2, wherein: The lengthening rod (4) and pry bar rod (3) are equipped with positioning locking assembly (2) between two adjacent lengthening rods (4);The positioning locking assembly (2) includes quick lock (8), and the front end of pry bar rod (3) and lengthening rod (4) is equipped with guide sliding slot (9) for the sliding positioning of quick lock (8), and the rear end of pry bar head (1), pry bar rod (3) and lengthening rod (4) is equipped with limit groove (10) which is inserted and locked with quick lock (8).

4. An extendable prying bar with quick attach positioning lock structure according to claim 3, wherein: The quick lock (8) includes locking piece (14), the locking piece (14) is equipped with waist round groove (12), and the locking piece (14) is equipped with screw (13) which is screwed into the waist round groove (12) and is fixed with pry bar rod (3) and lengthening rod (4).

5. An extendable prying bar with quick attach positioning lock structure according to claim 2, wherein: One end or both ends of pry bar rod (3) are equipped with internal thread hole (6), one end of lengthening rod (4) is equipped with internal thread hole (6), the other end of lengthening rod (4) is equipped with external thread joint (7), and both ends of connecting joint (5) are equipped with external thread joint (7).

6. An extendable prying bar with quick attach positioning lock structure according to claim 4, wherein: The pry bar head (1) includes pry head connecting block (16), the front end of pry head connecting block (16) is equipped with nail lifting head (15) which is integrated with pry head connecting block (16), and pry head connecting block (16) and pry bar rod (3) are equipped with external thread joint (7) which is screwed into internal thread hole (6).

7. An extendable prying bar with quick attach positioning lock structure according to claim 6, wherein: The front and rear ends of external thread joint (7) are equipped with sealing ring (11) which is inserted and nested with external thread joint (7).

8. An extendable prying bar with quick attach positioning lock structure according to claim 6, wherein: The pry bar head (1) is round head structure, flat head structure, pointed head structure, has blade structure or no blade structure, the nail lifting head (15) and pry head connecting block (16) are straight rod structure, acute angle structure or right angle structure.

9. An extendable prying bar with quick attach positioning lock structure according to claim 6, wherein: The front end of nail lifting head (15) is equipped with nail lifting groove (17), and the rear part of end surface of nail lifting head (15) is equipped with light groove (18).

10. The extendable prying bar with quick attach positioning lock structure of claim 2, wherein: The pry bar rod (3) and lengthening rod (4) are hollow pipe structure.

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