Quick connecting structure and drill bit

Abstract

The utility model discloses a quick connecting structure and a drill bit, and relates to the technical field of connecting structures, the quick connecting structure comprises a first connecting body, a second connecting body, a third connecting body and a fourth connecting body, the second connecting body is sleeved outside the first connecting body, and the second connecting body is provided with a lug boss matched with the second accommodating groove; one end of the elastic piece is fixedly connected with the first connecting body, and the other end of the elastic piece is elastically and movably located in the first containing groove. The utility model has the technical effects that the double limiting in the axial direction and the circumferential direction can be conveniently realized, and the structural complexity is low.

Description

Technical Field

[0001] The utility model relates to the technical field of connection structures, in particular to a quick connection structure and a drill bit. Background Art

[0002] The connection structure is a structure that is easy to connect and has the advantage of easy replacement of the connection body. It is widely used in products such as drill bits and wrenches.

[0003] In order to facilitate the realization of dual axial and circumferential limiting, the relevant connection structure is generally provided with multiple components, which easily leads to a high degree of structural complexity of the relevant connection structure, thereby resulting in a slow disassembly and assembly speed of the relevant connection structure. Utility Model Content

[0004] In view of the above technical problems, the utility model provides a quick connection structure and a drill bit, which are not only convenient for realizing dual limiting in the axial direction and the circumferential direction, but also have a low structural complexity.

[0005] In order to solve the above problems, the technical solution provided by the utility model is:

[0006] A quick connection structure, comprising:

[0007] A first connecting body, wherein the first connecting body is provided with a first receiving groove and a second receiving groove which are interconnected;

[0008] A second connecting body sleeved on the first connecting body, the second connecting body being provided with a protrusion matched with the second receiving groove;

[0009] A spring sheet, one end of which is fixedly connected to the first connector, and the other end of which is elastically movable in the first receiving groove.

[0010] Optionally, the spring piece includes:

[0011] a first plane portion, one end of which is fixedly connected to the first connector;

[0012] A curved surface portion connected to the other end of the first planar portion is elastically movable in the first accommodating groove.

[0013] Optionally, the spring sheet further includes a second planar portion, the second planar portion is connected to an end of the curved surface portion away from the first planar portion, and the second planar portion is movably located in the first accommodating groove.

[0014] Optionally, the first planar portion, the curved portion and the second planar portion are connected by an integral molding connection.

[0015] Optionally, also include:

[0016] A retaining ring groove is provided outside the first connecting body, and the retaining ring groove is communicated with the first containing groove;

[0017] A retaining ring body is located in the retaining ring groove, and the retaining ring body and the curved surface portion are correspondingly arranged.

[0018] Optionally, also include:

[0019] a first threaded hole provided on the first connecting body;

[0020] A through hole provided at one end of the elastic sheet, the through hole being in communication with the first threaded hole;

[0021] A first fastener cooperates with both the first threaded hole and the through hole.

[0022] Optionally, it further includes a limiting step arranged outside the first connecting body, and the limiting step is in contact with the second connecting body.

[0023] A drill bit, comprising a quick connection structure, further comprising:

[0024] a handle connected to an end of the first connector away from the second connector;

[0025] A plurality of blades are connected to an end of the second connector away from the first connector.

[0026] Optionally, the plurality of blades are evenly distributed along the circumference of the second connector.

[0027] Optionally, also include:

[0028] A receiving hole and a second threaded hole, both of which are provided on the first connecting body, the receiving hole and the second threaded hole being in communication;

[0029] a center drill located in the receiving hole;

[0030] A second fastener is threadedly connected to the second threaded hole, and the second fastener is in contact with the pilot drill.

[0031] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects: the quick connection structure not only facilitates the realization of dual axial and circumferential limiting through the protrusion and the spring sheet, but also has a low structural complexity. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is one of the cross-sectional views of a drill bit proposed in an embodiment of the utility model;

[0033] Figure 2 This is a second cross-sectional view of a drill bit provided in an embodiment of the utility model;

[0034] Figure 3 This is a schematic diagram of the structure of the first connector proposed in an embodiment of the utility model;

[0035] Figure 4 A schematic diagram of the structure of the second connector proposed in the embodiment of the utility model;

[0036] In the figure: 1. first connector; 11. first accommodating groove; 12. second accommodating groove; 13. retaining ring groove; 14. first threaded hole; 15. limiting step; 16. accommodating hole; 17. second threaded hole; 2. second connector; 21. raised portion; 3. spring piece; 31. first plane portion; 311. through hole; 32. second plane portion; 33. curved portion; 4. retaining ring body; 5. handle portion; 6. blade. DETAILED DESCRIPTION

[0037] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings and embodiments.

[0038] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It should also be noted that, for the convenience of description, only the parts related to the utility model are shown in the accompanying drawings. The words "first", "second", etc. described in the present utility model are set for the convenience of describing the technical solution of the present utility model, and have no specific limiting effect. They are all general references and do not constitute a limiting effect on the technical solution of the present utility model. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments in the present application can be combined with each other. In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a connection between the insides of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Multiple technical solutions in the same embodiment, and multiple technical solutions in different embodiments, can be arranged and combined to form new technical solutions that do not have contradictions or conflicts, all of which are within the scope of protection required by the present utility model.

[0039] Example 1

[0040] Combined with Figure 1-4 , this embodiment provides a quick connection structure, including:

[0041] A first connecting body 1, on which a first receiving groove 11 and a second receiving groove 12 are connected to each other;

[0042] A second connecting body 2 sleeved on the outside of the first connecting body 1, the second connecting body 2 is provided with a protrusion 21 matched with the second receiving groove 12;

[0043] The spring piece 3 has one end fixedly connected to the first connecting body 1 , and the other end of the spring piece 3 is elastically movable in the first receiving groove 11 .

[0044] Specifically, during installation, the second connecting body 2 is first sleeved on the outside of the first connecting body 1, so that the protrusion 21 passes through the first accommodating groove 11, and at the same time, the protrusion 21 squeezes the spring piece 3, so that the spring piece 3 is compressed; then, the second connecting body 2 is rotated toward the second accommodating groove 12 until the protrusion 21 and the second accommodating groove 12 cooperate, so that the spring piece 3 is reset, so that the edges of the spring piece 3 and the protrusion 21 contact, to achieve axial and circumferential dual limiting, thereby completing rapid installation; during disassembly, the second connecting body 2 is first rotated away from the second accommodating groove 12 until the protrusion 21 and the second accommodating groove 12 separate, so that the protrusion 21 squeezes the spring piece 3, so that the spring piece 3 is compressed; then, the second connecting body 2 is rotated away from the second accommodating groove 12 until the protrusion 21 and the second accommodating groove 12 separate, so that the protrusion 21 squeezes the spring piece 3, so that the spring piece 3 is compressed; The second connector 2 is moved away from the first connector 1 to complete quick disassembly; in summary, the quick connection structure is not only convenient for realizing dual axial and circumferential limiting through the protrusion 21 and the spring piece 3, but also has a low structural complexity; it should be noted that when the quick connection structure is used for a drill bit, in order to prevent the first connector 1 and the second connector 2 from automatically separating during the operation of the drill bit, the elastic force of the spring piece 3 needs to be greater than the interaction force between the first connector 1 and the second connector 2 during the operation of the drill bit. At the same time, in order to further prevent the first connector 1 and the second connector 2 from automatically separating during the operation of the drill bit, the rotation direction of the drill bit during the operation is the same as the installation direction of the quick connection structure, that is, opposite to the disassembly direction of the quick connection structure.

[0045] Among them, the first connector 1 and the second connector 2 can be part of a drill bit, or part of a wrench, etc., which is equivalent to that the quick connection structure can be used in products such as drill bits and wrenches; the first accommodating groove 11 is used to accommodate the protrusion 21 to prevent interference between the protrusion 21 and the first connector 1; the material of the spring piece 3 can be metal, plastic or rubber, etc., preferably metal.

[0046] Further, such as Figure 1 and 3 , the shrapnel 3 comprises:

[0047] A first plane portion 31, one end of which is fixedly connected to the first connecting body 1;

[0048] The curved surface portion 33 is connected to the other end of the first planar portion 31 , and the curved surface portion 33 is elastically movable in the first receiving groove 11 .

[0049] Specifically, the first planar portion 31 facilitates increasing the contact area between the spring piece 3 and the first connecting body 1, thereby ensuring a good connection strength between the spring piece 3 and the first connecting body 1; the curved portion 33 facilitates elastic deformation of the spring piece 3, and the cross-sectional shape of the curved portion 33 can be a part of a parabola or a part of a circle.

[0050] Further, such as Figure 1 and3 The spring piece 3 further includes a second planar portion 32 , which is connected to an end of the curved portion 33 away from the first planar portion 31 , and the second planar portion 32 is movably located in the first receiving groove 11 .

[0051] Specifically, the second plane portion 32 is convenient for increasing the contact area between the spring piece 3 and the first connecting member, so that the spring piece 3 can move elastically and stably on the first connecting member.

[0052] Further, such as Figure 1 and 3 The first planar portion 31 , the curved portion 33 and the second planar portion 32 are connected by an integral molding process.

[0053] Specifically, the integrally formed connection facilitates the improvement of the integrity of the spring piece 3, and is preferably an integrally formed bending connection.

[0054] Further, such as Figure 1 and 3 , also includes:

[0055] A retaining ring groove 13 is provided outside the first connecting body 1, and the retaining ring groove 13 is communicated with the first receiving groove 11;

[0056] The retaining ring body 4 is located in the retaining ring groove 13, and the retaining ring body 4 and the curved surface portion 33 are correspondingly arranged.

[0057] Specifically, since the retaining ring groove 13 is connected to the first accommodating groove 11, and the retaining ring groove 13 is used to accommodate the retaining ring body 4, it is equivalent to that at least part of the retaining ring body 4 is located in the first accommodating groove 11, which makes it convenient for the retaining ring body 4 to exert a certain limiting effect on the curved surface portion 33 of the spring piece 3, thereby preventing the curved surface portion 33 of the spring piece 3 from being excessively ejected, thereby preventing the spring piece 3 from causing harm to the operator.

[0058] Further, such as Figure 1 and 3 , also includes:

[0059] A first threaded hole 14 provided on the first connecting body 1;

[0060] A through hole 311 is provided at one end of the spring piece 3, and the through hole 311 is connected to the first threaded hole 14;

[0061] A first fastener matched with both the first threaded hole 14 and the through hole 311 .

[0062] Specifically, the first threaded hole 14, the through hole 311 and the first fastener facilitate the detachable connection between one end of the spring piece 3 and the first connector 1. The first fastener may be a countersunk screw, a semi-countersunk screw or the like.

[0063] Further, such as Figure 1 , 3and 4, further comprising a limiting step 15 arranged outside the first connecting body 1, the limiting step 15 being in contact with the second connecting body 2.

[0064] Specifically, the limiting step 15 is used to achieve mutual axial limiting between the first connecting body 1 and the second connecting body 2 .

[0065] like Figure 1 and 3 This embodiment also provides a drill bit, including a quick connection structure, and further comprising:

[0066] A handle 5 connected to an end of the first connector 1 away from the second connector 2;

[0067] A plurality of blades 6 are connected to an end of the second connecting body 2 away from the first connecting body 1 .

[0068] Specifically, the shank 5 is used to cooperate with relevant drilling equipment, so as to facilitate the cooperation between the drill bit and the relevant drilling equipment; a plurality of blades 6 are used for hole processing.

[0069] Further, such as Figure 4 , a plurality of blades 6 are evenly distributed along the circumference of the second connector 2 .

[0070] Specifically, the circumferential uniform distribution facilitates increasing the force uniformity of the plurality of blades 6 .

[0071] Further, such as Figure 1 , also includes:

[0072] The receiving hole 16 and the second threaded hole 17 are both provided on the first connecting body 1, and the receiving hole 16 and the second threaded hole 17 are communicated;

[0073] A pilot drill located in the receiving hole 16;

[0074] The second fastener is threadedly connected to the second threaded hole 17, and the second fastener is in contact with the pilot drill.

[0075] Specifically, the center drill is used for centering to ensure the hole processing accuracy of the drill bit; the second fastener is used to limit the center drill axially and circumferentially, and the second fastener can be a countersunk screw, a headless screw, etc.

[0076] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A quick connection structure, characterized in that: include: A first connecting body, wherein the first connecting body is provided with a first receiving groove and a second receiving groove which are interconnected; A second connecting body sleeved on the first connecting body, the second connecting body being provided with a protrusion matched with the second receiving groove; A spring sheet, one end of which is fixedly connected to the first connector, and the other end of which is elastically movable in the first receiving groove.

2. A quick connection structure according to claim 1, characterized in that: The shrapnel comprises: a first plane portion, one end of which is fixedly connected to the first connector; A curved surface portion connected to the other end of the first planar portion is elastically movable in the first accommodating groove.

3. A quick connection structure according to claim 2, characterized in that: The elastic sheet further includes a second planar portion, the second planar portion is connected to an end of the curved surface portion away from the first planar portion, and the second planar portion is movably located in the first accommodating groove.

4. A quick connection structure according to claim 3, characterized in that: The first plane portion, the curved surface portion and the second plane portion are connected by integral molding.

5. A quick connection structure according to claim 2, characterized in that: Also includes: A retaining ring groove is provided outside the first connecting body, and the retaining ring groove is communicated with the first containing groove; A retaining ring body is located in the retaining ring groove, and the retaining ring body and the curved surface portion are correspondingly arranged.

6. A quick connection structure according to any one of claims 1 to 5, characterized in that: Also includes: a first threaded hole provided on the first connecting body; A through hole provided at one end of the elastic sheet, the through hole being in communication with the first threaded hole; A first fastener cooperates with both the first threaded hole and the through hole.

7. A quick connection structure according to any one of claims 1 to 5, characterized in that: It also includes a limiting step arranged outside the first connecting body, and the limiting step is in contact with the second connecting body.

8. A drill bit, characterized in that: A quick connection structure according to any one of claims 1 to 7, further comprising: a handle connected to an end of the first connector away from the second connector; A plurality of blades are connected to an end of the second connector away from the first connector.

9. A drill bit according to claim 8, characterized in that: The plurality of blades are evenly distributed along the circumference of the second connector.

10. A drill bit according to claim 8, characterized in that: Also includes: A receiving hole and a second threaded hole, both of which are provided on the first connecting body, the receiving hole and the second threaded hole being in communication; a center drill located in the receiving hole; A second fastener is threadedly connected to the second threaded hole, and the second fastener is in contact with the pilot drill.

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