Composite inner and outer sleeve structure connecting piece

Abstract

The utility model relates to the technical field of connecting piece of rod, concretely relates to a composite inner and outer sleeve structure connecting piece. The utility model provides a composite inner and outer sleeve structure connecting piece, it includes the inner sleeve for connecting two rods and is used for locking the outer sleeve of inner sleeve, the inside of outer sleeve has locking hole, locking hole includes first locking hole and second locking hole, the aperture of first locking hole and second locking hole is not identical, the inner sleeve has connecting hole, locking groove is provided on the hole wall of connecting hole, the cross section of inner sleeve is annular with opening. The utility model connects two rods together through inner sleeve, and then extrudes the inner sleeve through the outer sleeve, changes the size of inner sleeve opening, thereby realizes the extrusion locking of rod. The whole structure is simple, need not to keep the holder to keep the inner sleeve, can realize the locking of rod, and the stability is good, and the connecting efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of rod connector technology, and more specifically, to a composite inner and outer sleeve structure connector. Background Technology

[0002] In existing technologies, there are many ways to connect rods such as steel bars, most of which use connectors to fix the rods.

[0003] There are generally two ways to connect rods using connectors: one is through threaded connection, which ensures the axial force on the rod; the other is through clamping.

[0004] When the rod is subjected to vibration, the anchor may loosen due to rotation. In the existing technology, the rod is connected by clamping, but the clamping plate needs a retainer to maintain the overall structure and facilitate subsequent locking, which is more troublesome to operate. Utility Model Content

[0005] The purpose of this utility model is to provide a composite inner and outer jacket structure connector that can solve the above-mentioned technical problems.

[0006] This utility model provides a composite inner and outer sleeve structure connector, which includes an inner sleeve for connecting two rods and an outer sleeve for locking the inner sleeve;

[0007] The inside of the outer casing has locking holes;

[0008] The locking hole includes a first locking hole and a second locking hole, and the diameters of the first locking hole and the second locking hole are different;

[0009] The inner sleeve has a connecting hole, and a locking groove is provided on the wall of the connecting hole;

[0010] The inner sleeve has a cross-section that is annular with an opening.

[0011] In a preferred embodiment, the inner sleeve includes a first locking section and a second locking section;

[0012] The outer diameter of the first locking section corresponds to the diameter of the first locking hole;

[0013] The outer diameter of the second locking section corresponds to the diameter of the second locking hole.

[0014] In a preferred embodiment, the inner sleeve is provided with a positioning hole, which is located at the connection between the first locking section and the second locking section.

[0015] In a preferred embodiment, one end of the locking hole is chamfered.

[0016] In a preferred embodiment, a transition tapered hole is provided between the first locking hole and the second locking hole.

[0017] In a preferred embodiment, the outer wall of the inner sleeve is provided with a plurality of deformation grooves, the extension direction of which is parallel to the axial direction of the inner sleeve.

[0018] In a preferred embodiment, there are multiple deformation grooves, and the multiple deformation grooves are parallel to each other.

[0019] In a preferred embodiment, there are multiple deformation grooves, which are staggered.

[0020] In a preferred embodiment, the locking groove is a V-shaped groove.

[0021] In a preferred embodiment, the inner sleeve has a pressure-bearing flange at its end, and the outer sleeve has the same outer diameter as the pressure-bearing flange.

[0022] The beneficial effects of this utility model embodiment are:

[0023] After connecting two rods together via an inner sleeve, the outer sleeve compresses the inner sleeve, changing the size of the inner sleeve's opening, thereby achieving compression and locking of the rods. The overall structure is simple, requiring no cage to hold the inner sleeve in place, achieving locking of the rods with good stability and high connection efficiency. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a structural schematic diagram of the composite inner and outer jacket structure connector provided in an embodiment of the present utility model;

[0026] Figure 2 A schematic diagram of the outer shell of the composite inner and outer shell connecting member provided in this embodiment of the utility model;

[0027] Figure 3 A schematic diagram of the inner sleeve of the composite inner and outer sleeve connector provided in an embodiment of this utility model;

[0028] Figure 4 A side view of the inner sleeve of the composite inner and outer sleeve structure connector provided in an embodiment of this utility model;

[0029] Figure 5 A side view of the composite inner and outer sleeve connector provided in this embodiment of the present utility model after the inner sleeve is folded up;

[0030] Figure 6 A pre-assembly schematic diagram of the composite inner and outer jacket structure connector provided in an embodiment of this utility model;

[0031] Figure 7 A schematic diagram showing the result after the composite inner and outer jacket structure connector provided in this embodiment of the utility model is connected;

[0032] Figure 8 A schematic diagram of the first configuration of the deformation groove on the inner sleeve of the composite inner and outer sleeve structure connector provided in the embodiment of this utility model;

[0033] Figure 9 A schematic diagram of a second configuration of the deformation groove on the inner sleeve of the composite inner and outer sleeve structure connector provided in an embodiment of this utility model;

[0034] Figure 10 for Figure 9 The diagram shows the state of the deformation groove after deformation.

[0035] Figure 11 This is another structural schematic diagram of the composite inner and outer jacket structure connector provided in an embodiment of the present utility model.

[0036] Icons: 1-Outer sleeve; 1.1-First locking hole; 1.2-Second locking hole; 1.3-Transition tapered hole; 1.4-Guide groove; 2-Inner sleeve; 2.1-Connecting hole; 2.2-Opening; 2.3-First locking section; 2.4-Second locking section; 2.5-Transition section; 2.6-Positioning hole; 2.7-Deformation groove; 2.8-Connecting part; 2.9-Locking groove; 2.10-Pressure flange; 3-Staff member. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0039] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0040] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0041] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0042] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0043] The following is combined Figures 1-11 The following describes some embodiments of the present invention in detail. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0044] This utility model provides a composite inner and outer jacket structure connector, such as... Figure 1 As shown, it includes an inner sleeve 2 for connecting two rods 3 and an outer sleeve 1 for locking the inner sleeve 2; as Figure 2 As shown, the inner surface of the outer casing 1 has locking holes; the locking holes include a first locking hole 1.1 and a second locking hole 1.2, the diameters of the first locking hole 1.1 and the second locking hole 1.2 are different; as shown... Figures 3-5 As shown, the inner sleeve 2 has a connecting hole 2.1, and a locking groove 2.9 is provided on the wall of the connecting hole 2.1; the cross-section of the inner sleeve 2 is an annular shape with an opening 2.2.

[0045] In this embodiment, the ends of the two rods 3 are inserted into the inner sleeve 2 from both ends and abut against each other. The outer sleeve 1 is put on the inner sleeve 2 from one end and squeezes the inner sleeve 2 through the first locking hole 1.1 and the second locking hole 1.2, which deforms the opening 2.2 of the inner sleeve 2, thereby squeezing the outer wall of the rod 3, realizing the fixed connection between the inner sleeve 2 and the rod 3, thus realizing the fixed connection between the two rods 3.

[0046] Specifically, in this embodiment, the locking groove 2.9 has a toothed structure, which can facilitate the inward bending of the inner sleeve 2 and change the size of the annular opening 2.2 through the groove structure, and can also increase the locking force between the inner sleeve 2 and the rod 3 by the tooth end abutting against the outer wall of the rod 3.

[0047] In this embodiment, the locking hole of the outer sleeve 1 is divided into two parts: a first locking hole 1.1 and a second locking hole 1.2. The first locking hole 1.1 and the second locking hole 1.2 are coaxially arranged, but the diameters of the first locking hole 1.1 and the second locking hole 1.2 are different, with the diameter of the first locking hole 1.1 being larger than that of the second locking hole 1.2. With this arrangement, when the inner sleeve 2 and the outer sleeve 1 are engaged, the inner sleeve 2 first enters the first locking hole 1.1, and then enters the second locking hole 1.2 as it continues to move axially. This ensures both the accuracy of the engagement and further tightens the inner sleeve 2 through the second locking hole 1.2, thus guaranteeing the connection effect of the rod 3.

[0048] In a preferred embodiment, the inner sleeve 2 includes a first locking section 2.3 and a second locking section 2.4; the outer diameter of the first locking section 2.3 corresponds to the diameter of the first locking hole 1.1; and the outer diameter of the second locking section 2.4 corresponds to the diameter of the second locking hole 1.2.

[0049] In this embodiment, the outer diameters of the first locking section 2.3 and the second locking section 2.4 are different, and they are respectively matched with the first locking hole 1.1 and the second locking hole 1.2. The inner sleeve 2 is locked by pressing the first locking section 2.3 and the second locking section 2.4 with the first locking hole 1.1 and the second locking hole 1.2 respectively.

[0050] In this embodiment, the outer diameter of the first locking section 2.3 is smaller than the diameter of the first locking hole 1.1 and larger than the diameter of the second locking hole 1.2, and the outer diameter of the second locking section 2.4 is smaller than the diameter of the second locking hole 1.2.

[0051] This configuration allows the first locking hole 1.1 and the second locking hole 1.2 to compress the inner sleeve 2, causing the inner sleeve 2 to deform and lock the rod 3 inside the inner sleeve 2.

[0052] In a preferred embodiment, the inner sleeve 2 is provided with a positioning hole 2.6, which is located at the connection between the first locking section 2.3 and the second locking section 2.4.

[0053] In this embodiment, a positioning hole 2.6 is provided on the inner sleeve 2. The position of the rod 3 inserted into the connecting hole 2.1 of the inner sleeve 2 can be observed through the positioning hole 2.6; or a positioning pin is inserted into the positioning hole 2.6, and the two rods 3 are inserted into the connecting hole 2.1 from both ends of the inner sleeve 2. When they abut against the positioning pin, they are inserted into place.

[0054] When the rod 3 reaches the set position inside the connecting hole 2.1 of the inner sleeve 2, move the outer sleeve 1 to lock the inner sleeve 2.

[0055] Specifically, in this embodiment, the positioning hole 2.6 is located in the middle of the inner sleeve 2 along the axis, that is, when the rod 3 is inserted into the connecting hole 2.1 from either end, the insertion length is the same.

[0056] This configuration ensures the stability and balance of member 3 during connection.

[0057] In this embodiment, for applications requiring high-precision connections, the number of positioning holes 2.6 can be increased or their shape can be changed to provide more positioning reference points; while for general connection needs, simple circular positioning holes 2.6 can be used to simplify the structure and reduce costs.

[0058] In a preferred embodiment, one end of the locking hole is chamfered.

[0059] In this embodiment, a chamfer is provided at the inlet of the locking hole, and a guide groove 1.4 is formed by the chamfer to facilitate the inner sleeve 2 entering the locking hole of the outer sleeve 1.

[0060] Specifically, in this embodiment, the chamfer can be a 45°×45° chamfer, a 30°×60° chamfer, or a rounded corner. The goal is simply to achieve the guiding function through the chamfer setting.

[0061] Specifically, in this embodiment, the size of the chamfer can be set according to the thickness of the outer jacket 1.

[0062] Meanwhile, in this embodiment, the end of the inner sleeve 2 can also be provided with a guide cone, such as... Figure 2 As shown (not marked), the chamfering of the locking hole is matched to further achieve precise positioning between the inner sleeve 2 and the outer sleeve 1.

[0063] In a preferred embodiment, a transition tapered hole 1.3 is provided between the first locking hole 1.1 and the second locking hole 1.2.

[0064] In this embodiment, the design of the transition cone hole 1.3 is based on the mechanical principle of the interaction between the inner sleeve 2 and the outer sleeve 1 during the locking process.

[0065] Specifically, during the locking process, the inner sleeve 2 needs to gradually transition from the first locking hole 1.1 to the second locking hole 1.2. However, the traditional stepped hole design is prone to stress concentration during this transition, resulting in uneven locking effect and even damage to the inner sleeve 2 or the outer sleeve 1.

[0066] To address this issue, this embodiment incorporates a transition tapered hole 1.3 between the first locking hole 1.1 and the second locking hole 1.2. The presence of the transition tapered hole 1.3 allows the inner sleeve 2 to gradually adapt to the dimensional changes of the locking holes in the outer sleeve 1 during the locking process, thereby achieving a more uniform and stable locking effect. The tapered hole design allows the locking force to be gradually transmitted along the inclined surface of the tapered hole, avoiding stress concentration problems caused by sudden changes in locking force.

[0067] When the inner sleeve 2 is inserted into the locking hole and gradually enters the transition tapered hole 1.3, the inclined surface of the tapered hole guides the inner sleeve 2 to gradually contract, so that the outer diameter of the inner sleeve 2 gradually matches the diameter of the locking hole. This progressive locking method not only improves the stability and reliability of locking, but also effectively reduces the frictional heat generated during the locking process, extending the service life of the connector.

[0068] It is understandable that the design of the transition taper hole 1.3 can be adjusted and optimized according to different connection requirements. For example, for applications requiring higher locking strength, the length and taper of the transition taper hole 1.3 can be appropriately increased to provide a more uniform locking force; while for general connection requirements, a shorter transition taper hole 1.3 can be used to simplify the structure and reduce costs.

[0069] The flexible design of the transition tapered hole 1.3 allows the composite inner and outer sleeve structure connector to better adapt to various complex engineering environments and meet diverse connection needs.

[0070] In this embodiment, the first locking section 2.3 and the second locking section 2.4 of the inner sleeve 2 are connected by a transition section 2.5, and the parameters such as taper and length are set to match the transition tapered hole 1.3.

[0071] In a preferred embodiment, a plurality of deformation grooves 2.7 are provided on the outer wall of the inner sleeve 2, and the extending direction of the deformation grooves 2.7 is parallel to the axial direction of the inner sleeve 2.

[0072] In this embodiment, the deformation groove 2.7 makes it easier and more convenient to adjust the size of the opening 2.2 of the inner sleeve 2.

[0073] Specifically, in this embodiment, the two ends of the deformation groove 2.7 in the length direction are connecting parts 2.8. Through the setting of connecting parts 2.8, the inner sleeve 2 divided by the deformation groove 2.7 is connected into a whole.

[0074] The design of the deformation groove 2.7 not only provides space for the deformation of the inner sleeve 2, but also guides the deformation direction of the inner sleeve 2, so that it shrinks more evenly during the locking process.

[0075] In this embodiment, the deformation groove 2.7 can also effectively reduce the frictional heat generated during the locking process. During the locking process, the friction between the inner sleeve 2 and the outer sleeve 1 generates heat. Excessive heat may cause a decrease in the material properties of the inner sleeve 2 or the outer sleeve 1, affecting the service life of the connector. The presence of the deformation groove 2.7 allows the inner sleeve 2 to dissipate heat better during deformation, thereby reducing the risk of material property degradation caused by frictional heat.

[0076] Understandably, the number, width, and depth of the deformation grooves 2.7 can be adjusted according to different connection requirements. For example, in applications requiring higher deformation capacity, the number or depth of the deformation grooves 2.7 can be increased to provide greater deformation space; while for general connection needs, fewer deformation grooves 2.7 can be used to simplify the structure and reduce costs. This flexible design approach allows the composite inner and outer jacket 1 structure connector to better adapt to various complex engineering environments and meet diverse connection requirements.

[0077] In a preferred embodiment, there are multiple deformation grooves 2.7, and the multiple deformation grooves 2.7 are parallel to each other.

[0078] In this embodiment, the deformation groove 2.7 can be configured as a through groove connecting the inside and outside of the inner sleeve 2, with partial connections at both ends to keep the inner sleeve 2 as a whole.

[0079] In this embodiment, the deformation groove 2.7 can also be a through groove that runs along the length of the inner sleeve 2, with a depth slightly less than the thickness of the inner sleeve 2, so that the inner sleeve 2 remains as a whole.

[0080] In this embodiment, the number and spacing of the deformation grooves 2.7 are set according to the specific diameter of the inner sleeve 2. For applications requiring higher fatigue resistance, the spacing of the deformation grooves 2.7 can be appropriately reduced to further disperse stress; while for general connection requirements, a larger spacing can be used to simplify the structure and reduce costs.

[0081] In this embodiment, the length directions of the deformation grooves 2.7 are parallel to each other. When the outer sleeve 1 applies a locking force to the inner sleeve 2, the inner sleeve 2 deforms along the direction of the deformation grooves 2.7. Since the deformation grooves 2.7 are parallel to each other, the deformation direction of the inner sleeve 2 is consistent, and the deformation process is more uniform and controllable. This uniform deformation not only reduces stress concentration caused by excessive local deformation, but also ensures a tighter contact between the inner sleeve 2 and the outer sleeve 1, further improving the strength and reliability of the connection.

[0082] In a preferred embodiment, there are multiple deformation grooves 2.7, and the multiple deformation grooves 2.7 are staggered.

[0083] In this embodiment, the deformation grooves 2.7 can be configured to be staggered. That is, they are through in the thickness direction of the inner sleeve 2, and extend from the openings 2.2 at both ends to the opposite ends in the length direction without being through, forming a staggered structure.

[0084] This design allows both ends of the inner sleeve 2 to deform, achieving overall deformation and avoiding stress concentration caused by deformation at only one end or in the middle.

[0085] In a preferred embodiment, the locking groove 2.9 is a V-shaped groove.

[0086] In this embodiment, the V-shaped locking groove 2.9's tip can penetrate deep into the surface of the rod 3, forming a stronger clamping force, allowing the inner sleeve 2 to more firmly hold the rod 3 during the locking process. This design not only improves the stability of the connection but also enhances the tensile strength of the connector, enabling it to withstand greater loads.

[0087] In actual operation, when rod 3 is inserted into the connecting hole 2.1 of inner sleeve 2, the tip of the V-shaped locking groove 2.9 contacts the surface of rod 3 and produces a certain embedding effect. As outer sleeve 1 applies locking force to inner sleeve 2, inner sleeve 2 contracts, and the tip of V-shaped locking groove 2.9 further embeds into the surface of rod 3, thereby achieving a more secure connection. This embedded design makes the contact between rod 3 and inner sleeve 2 tighter, significantly increases friction, and significantly improves the reliability of the connection.

[0088] Furthermore, the V-shaped locking groove 2.9 effectively reduces connection problems caused by uneven surfaces of the rod 3. In actual engineering, the surface of the rod 3 may have certain defects or unevenness, and traditional smooth hole wall designs are prone to connection instability in such cases. The tip of the V-shaped locking groove 2.9 can adapt to the unevenness of the rod 3 surface, achieving more uniform contact through an embedding effect, thereby improving the adaptability and reliability of the connection.

[0089] In a preferred embodiment, the inner sleeve 2 has a pressure-bearing flange 2.10 at its end, and the outer diameter of the outer sleeve 1 is the same as the outer diameter of the pressure-bearing flange 2.10.

[0090] In this embodiment, the inner sleeve 2 has a pressure-bearing flange 2.10 at its end, which provides additional support during the locking process, ensuring that the inner sleeve 2 can uniformly transmit pressure when subjected to axial pressure, thereby achieving a more stable locking effect. In actual operation, when the outer sleeve 1 applies a locking force to the inner sleeve 2, the pressure-bearing flange 2.10 can evenly distribute the pressure to the entire end of the inner sleeve 2, avoiding deformation or damage to the inner sleeve 2 due to excessive local pressure.

[0091] The beneficial effects of this utility model embodiment are:

[0092] After connecting the two rods 3 together through the inner sleeve 2, the outer sleeve 1 compresses the inner sleeve 2, changing the size of the opening 2.2 of the inner sleeve 2, thereby compressing and locking the rods 3. The overall structure is simple, and the rods 3 can be locked without the need for a retainer to hold the inner sleeve 2. It has good stability and high connection efficiency.

[0093] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A composite outer and inner sleeve structure connector, characterized by, It includes an inner sleeve for connecting two rods and an outer sleeve for locking the inner sleeve; The inside of the outer casing has locking holes; The locking hole includes a first locking hole and a second locking hole, and the diameters of the first locking hole and the second locking hole are different; The inner sleeve has a connecting hole, and a locking groove is provided on the wall of the connecting hole; The inner sleeve has a cross-section that is annular with an opening.

2. The composite wrap structure joint of claim 1, wherein The inner sleeve includes a first locking section and a second locking section; The outer diameter of the first locking section corresponds to the diameter of the first locking hole; The outer diameter of the second locking section corresponds to the diameter of the second locking hole.

3. The composite wrap structure joint of claim 2, wherein The inner sleeve is provided with a positioning hole, which is located at the connection between the first locking section and the second locking section.

4. The composite wrap structure joint of claim 1, wherein One end of the locking hole is chamfered.

5. The composite inner and outer jacket structure connector according to claim 1, characterized in that, A transition tapered hole is provided between the first locking hole and the second locking hole.

6. The composite wrap structure joint of claim 1, wherein The outer wall of the inner sleeve is provided with a plurality of deformation grooves, and the extension direction of the deformation grooves is parallel to the axial direction of the inner sleeve.

7. The composite wrap-over structure joint of claim 6, wherein The number of deformation grooves is multiple, and the multiple deformation grooves are parallel to each other.

8. The composite wrap structure joint of claim 6, wherein The number of deformation grooves is multiple, and the multiple deformation grooves are staggered.

9. The composite wrap structure joint of claim 1, wherein The locking groove is a V-shaped groove.

10. The composite wrap structure joint of claim 1, wherein The inner sleeve has a pressure-bearing flange at its end, and the outer sleeve has the same outer diameter as the pressure-bearing flange.

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