A terminal cover structure

Abstract

The utility model relates to the technical field of sheath structure, specifically, relates to a sheath structure for wiring terminal, including the sleeve pipe of wearing in the terminal outside, the lock piece is equipped with at the through -going end part of sleeve pipe, the lock piece is used for fixing and connecting sleeve pipe on the electric wire, is equipped with the buffer assembly on the outside wall of sleeve pipe, the outside wall of sleeve pipe is equipped with annular groove along its periphery, the buffer assembly includes the ring plate of wearing in annular groove and can dismantle, the lock piece is connected in the sleeve pipe outside time is used for pushing ring plate and is overlapped in annular groove, and the energy absorption cavity is formed between ring plate and annular groove. By wearing sleeve pipe in the crimping pipe outside of terminal, and setting buffer assembly on the outside wall of sleeve pipe, the impact of the buffer assembly can be used to buffer the impact of the sleeve pipe, so that the crimping pipe is protected, and the core in the crimping pipe is prevented from being loosened and broken due to the impact.

Description

Technical Field

[0001] This utility model relates to the field of sheath structure technology, and more specifically, to a sheath structure for a terminal block. Background Technology

[0002] Copper terminals are typically made of pure copper or copper alloys, possessing excellent conductivity, corrosion resistance, and mechanical strength. During electrical installation or wiring connections, to ensure insulation protection for the copper terminals where wires are crimped, a sheath is usually wrapped around the portion of the copper terminal that is crimping the wire.

[0003] Currently, the commonly used sheath for copper terminals is heat shrink tubing. The heat shrink tubing is placed over the copper terminal and heated with a heat gun until it completely shrinks and adheres to the copper terminal, thus completing the insulation protection of the copper terminal. However, in actual use, the heat shrink tubing is mostly made of polyolefin, which has a small range of elastic deformation. This means that when the copper terminal is hit, the heat shrink tubing cannot effectively buffer the impact generated by the collision. As a result, the force generated by the collision can easily cause the copper terminal to loosen or break at the point where it is crimped to the wire. Therefore, improvements are needed. Utility Model Content

[0004] The purpose of this utility model is to provide a sheath structure for wiring terminals to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A sheath structure for a terminal block includes a sleeve that passes through the terminal block, a locking member at the through end of the sleeve for fixing the sleeve to the wire, and a buffer assembly on the outer wall of the sleeve.

[0007] The outer wall of the sleeve is provided with an annular groove along its circumference. The buffer assembly includes a removable annular plate fitted inside the annular groove. When the locking member is connected to the outside of the sleeve, it is used to push the annular plate to overlap inside the annular groove, and an energy absorption cavity is formed between the annular plate and the annular groove.

[0008] Furthermore, the energy-absorbing cavity is filled with honeycomb paper.

[0009] Furthermore, a first overlapping groove is provided on the side wall of the annular groove away from the through end of the sleeve along its circumference, and one end of the annular plate is bent to form an overlapping ring overlapping in the first overlapping groove.

[0010] The locking component includes a rotating sleeve, which has a second overlapping groove along its circumference on the side wall near the ring plate. When the rotating sleeve is threaded into the ring groove, the other end of the ring plate overlaps in the second overlapping groove.

[0011] Furthermore, the end of the rotating sleeve away from the ring plate extends outward to form an extension tube covering the wire. The outer wall of the extension tube is provided with an external thread and a deformation part. The locking component also includes a rotating end cap that is sleeved on the wire. The rotating end cap is provided with an internal thread and a pressing part. When the rotating end cap is connected to the external thread through the internal thread, the pressing part pushes the deformation part to hold the wire tightly.

[0012] Furthermore, the deformable part includes a frustum-shaped surface disposed on the outer wall of the extension tube along the circumference of the extension tube, and a gap groove penetrating the extension tube is provided on the frustum-shaped surface along its circumference.

[0013] The extrusion section includes an extrusion surface disposed circumferentially within the rotating end cover, which extrudes the frustum surface to cause the deformation section to grip the wire.

[0014] Furthermore, anti-slip ridges are evenly distributed along the circumference of the outer wall of the rotating sleeve.

[0015] Furthermore, sealing gaskets are fitted in both the first and second overlapping grooves, and the rotating sleeve is used to install the ring plate so that the two ends of the ring plate squeeze the corresponding sealing gaskets.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This utility model involves inserting a sleeve over the crimping tube of the terminal and setting a buffer component on the outer wall of the sleeve. The buffer component can buffer the impact force generated by the collision of the sleeve, so as to protect the crimping tube and prevent the wire core inside from being loosened or broken due to the impact force.

[0018] 2. This utility model enables the installation of the buffer assembly outside the sleeve through the locking component, and at the same time, it can fix the sleeve that is fitted outside the compression tube, thereby facilitating the actual use of the sheath structure. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the sheath structure installed on the wire in this utility model.

[0020] Figure 2 This is a cross-sectional view of the sheath structure of this utility model installed on the wire.

[0021] Figure 3 This is an exploded view of the sheath structure in this utility model.

[0022] Figure 4 This is a half-sectional structural diagram of the locking component in this utility model.

[0023] Figure 5 This is a schematic diagram of the sleeve structure in this utility model.

[0024] Figure 6 This is a schematic diagram of the structure in which the wire is crimped onto the terminal in this utility model.

[0025] The meanings of the labels in the diagram are as follows:

[0026] 10. Terminal; 20. Wire; 110. Sleeve; 120. Ring plate; 130. Rotating sleeve; 140. Rotating end cap;

[0027] 201. Overlapping ring; 210. Honeycomb paper; 221. External threaded part; 222. Deformation part;

[0028] 300. Sealing gasket; 301. Annular groove; 302. First lap groove; 311. Second lap groove;

[0029] 401. Frustum; 402. Clearance groove; 411. Internal thread section; 412. Extrusion section;

[0030] 610 Terminal head; 620 Crimping tube. Detailed Implementation

[0031] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are merely illustrative of this utility model and are not intended to limit it.

[0032] The following is in conjunction with the appendix Figures 1-6 This embodiment will be described in further detail.

[0033] like Figure 1 and Figure 2 As shown, a sheath structure for a terminal block in this embodiment includes a sleeve 110 that passes through the terminal 10. A locking member is provided at the through end of the sleeve 110. The locking member is used to fix the sleeve 110 to the wire 20. A buffer assembly is provided on the outer wall of the sleeve 110.

[0034] In this embodiment, combined with Figure 6 As shown, the terminal 10 includes an integrally formed terminal head 610 and crimping tube 620. The terminal head 610 has a mounting hole. When connecting the wire 20, the outer sheath of one end of the wire 20 is first stripped to expose a section of the wire core. Then, the exposed wire core is inserted into the crimping tube 620, and the end of the outer sheath of the wire 20 abuts against the end of the crimping tube 620. At this time, the crimping tube 620 is squeezed by tools such as wire crimping pliers to crimp the wire core.

[0035] Specifically, the sleeve 110 has an open end structure, and the closed end of the sleeve 110 has a through hole for the terminal head 610 to extend out. Thus, the sleeve 110 can be fitted over the crimping tube 620 of the crimping wire 20 of the terminal 10 to protect the crimping tube 620.

[0036] The locking member is threaded onto the outer wall of the open end of the sleeve 110. The locking member holds the outer sheath of the wire 20, thereby fixing the sleeve 110 that is fitted over the crimping tube 620. Specifically, in order to improve the sealing performance of the terminal head 610 penetrating the sleeve 110, a sealing gasket is provided at the closed end of the sleeve 110 in this embodiment. The terminal head 610 passes through the sealing gasket. When the sleeve 110 is fixed by the locking member, the closed end of the sleeve 110 squeezes the sealing gasket to improve the sealing performance at that point.

[0037] The buffer component is designed to cushion the impact force generated by the collision on the sleeve 110, thereby protecting the crimping tube 620 and preventing the wire core inside from becoming loose or broken due to the impact force.

[0038] Combination Figures 3-5 As shown, in this embodiment, an annular groove 301 is provided on the outer side wall of the sleeve 110 along its circumference. The opening of the annular groove 301 faces the opening end of the sleeve 110. The buffer assembly includes a removable annular plate 120 fitted inside the annular groove 301. When the locking member is connected to the outside of the sleeve 110, it is used to push the annular plate 120 to overlap inside the annular groove 301, and an energy absorption cavity is formed between the annular plate 120 and the annular groove 301.

[0039] In this embodiment, the ring plate 120 is made of nylon material. When the locking member is connected to the outer wall of the sleeve 110, the ring plate 120 can be pressed and installed in the ring groove 301 to form an energy absorption cavity. The energy absorption cavity can absorb energy when the ring plate 120 is impacted, thereby buffering the impact force and protecting the press-fit tube 620.

[0040] In practical use, in order to improve the buffering effect of the buffer assembly on impact, in this embodiment, the energy absorption cavity is filled with honeycomb paper 210, wherein the honeycomb paper 210 has a ring structure and is distributed in the ring-shaped energy absorption cavity. The use of honeycomb paper 210 can further improve the energy absorption effect of the energy absorption cavity, so as to make its buffering effect on impact better.

[0041] In order to better achieve the pressing of the ring plate 120 in the annular groove 301 so as to form an annular energy absorption cavity, in this embodiment, the annular groove 301 is provided with a first overlapping groove 302 along its circumference on the side wall away from the through end of the sleeve 110, and one end of the ring plate 120 is bent to form an overlapping ring 201 overlapping in the first overlapping groove 302.

[0042] The locking component includes a rotating sleeve 130, which has a cylindrical structure. The rotating sleeve 130 has a second overlapping groove 311 on its side wall near the annular plate 120 along its circumference. The inner wall of the rotating sleeve 130 is connected to the side wall at the opening end of the annular groove 301 by a thread, so as to realize the installation and removal of the rotating sleeve 130 on the sleeve 110. When the rotating sleeve 130 is threaded into the annular groove 301, the other end of the annular plate 120 overlaps in the second overlapping groove 311, so as to realize the installation of the annular plate 120 in the annular groove 301.

[0043] In actual use, when the ring plate 120 or the honeycomb paper 210 is damaged by impact, the ring plate 120 or the honeycomb paper 210 can be slid out through the opening end of the ring groove 301 by removing the rotating sleeve 130, so that it can be replaced and the sleeve 110 and the locking parts can be reused.

[0044] In this embodiment, the end of the rotating sleeve 130 away from the ring plate 120 extends outward to form an extension tube covering the wire 20. The outer wall of the extension tube is provided with an external thread portion 221 and a deformation portion 222. The surface of the external thread portion 221 is provided with external threads. The locking member also includes a rotating end cap 140 that is sleeved on the wire 20. The rotating end cap 140 is provided with an internal thread portion 411 and a pressing portion 412. The surface of the internal thread portion 411 is provided with internal threads. When the rotating end cap 140 is connected to the external thread portion 221 through the internal thread portion 411, the threaded connection between the internal and external threads can drive the pressing portion 412 to push the deformation portion 222 to clamp the wire 20, so that the rotating sleeve 130 and the sleeve 110 are fixed as a whole.

[0045] In this embodiment, in order to better deform the deformation part 222 to tightly hug the outer sheath of the wire 20, a frustum surface 401 is provided circumferentially on the outer wall of the extension tube and at the end away from the rotating sleeve 130. A gap groove 402 penetrating the extension tube is provided on the frustum surface 401 circumferentially, so that the deformation part 222 is formed on the outer wall of the extension tube.

[0046] The rotating end cap 140 has a pressing surface along its circumference, which cooperates with the frustum surface 401, thereby forming a pressing part 412 inside the rotating end cap 140. When the rotating end cap 140 is threaded to the external thread part 221, the rotating end cap 140 can move towards the rotating sleeve 130, thereby driving the pressing surface to press the frustum surface 401. With the setting of the gap groove 402, the deformation part 222 can hold the wire 20, thereby completing the overall fixation of the rotating sleeve 130 and the sleeve 110.

[0047] In actual use, in order to facilitate the user to rotate the rotating sleeve 130 to achieve its connection in the annular groove 301, in this embodiment, anti-slip ridges are evenly distributed along the circumference on the outer side wall of the rotating sleeve 130. The anti-slip ridges increase the friction of the outer side wall of the rotating sleeve 130 so that the user can rotate it.

[0048] Specifically, in order to facilitate the user to rotate the rotating end cover 140, anti-slip ridges are also evenly distributed along its circumference on the outer side wall of the rotating end cover 140.

[0049] In this embodiment, in order to improve the sealing performance of the energy absorption cavity, sealing gaskets 300 are fitted in both the first overlapping groove 302 and the second overlapping groove 311. When the rotating sleeve 130 installs the ring plate 120, the two ends of the ring plate 120 are pressed against the corresponding sealing gaskets 300, thereby sealing the gap between the two ends of the ring plate 120 and the first overlapping groove 302 and the second overlapping groove 311.

[0050] In practical use, the rotating end cap 140 is first fitted onto the wire 20. Then, the outer sheath of one end of the wire 20 is stripped to expose a section of the wire core. The exposed wire core is inserted into the crimping tube 620, with the end of the wire 20's outer sheath abutting against the end of the crimping tube 620. At this point, the crimping tube 620 is pressed using crimping pliers or similar tools to crimp the wire core. Next, the rotating sleeve 130 is threaded onto the annular groove 301 to assemble the buffer assembly within the annular groove 301. Then... The sleeve 110 is fitted onto the terminal 10, and the rotating end cap 140 is threaded onto the external thread 221 of the rotating sleeve 130 so that the deformable part 222 grips the outer sheath of the wire 20 to fix the sleeve 110. When it is necessary to replace the ring plate 120 or the honeycomb paper 210, first rotate the rotating end cap 140 to release its fixation on the sleeve 110, then remove the sleeve 110 from the terminal 10, and then replace the ring plate 120 or the honeycomb paper 210 by removing the rotating sleeve 130.

[0051] In summary, the above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall fall within the scope of the patent of the present utility model.

Claims

1. A sheath structure for a terminal block, comprising a sleeve (110) that passes over the terminal (10), characterized in that: A locking element is provided at the through end of the sleeve (110), which is used to fix the sleeve (110) to the wire (20). A buffer assembly is provided on the outer wall of the sleeve (110). The outer wall of the sleeve (110) is provided with an annular groove (301) along its circumference. The buffer assembly includes an annular plate (120) that is fitted inside the annular groove (301) and is detachable. When the locking member is connected to the outside of the sleeve (110), it is used to push the annular plate (120) to overlap inside the annular groove (301). An energy-absorbing cavity is formed between the annular plate (120) and the annular groove (301).

2. The sheath structure for a terminal block according to claim 1, characterized in that: The energy-absorbing cavity is filled with honeycomb paper (210).

3. The sheath structure for a terminal block according to claim 1, characterized in that: The annular groove (301) is provided with a first overlapping groove (302) along its circumference on the side wall away from the through end of the sleeve (110), and one end of the annular plate (120) is bent to form an overlapping ring (201) overlapping in the first overlapping groove (302). The locking component includes a rotating sleeve (130), which has a second overlapping groove (311) along its circumference on the side wall near the ring plate (120). When the rotating sleeve (130) is threaded into the ring groove (301), the other end of the ring plate (120) overlaps in the second overlapping groove (311).

4. The sheath structure for a terminal block according to claim 3, characterized in that: The rotating sleeve (130) extends outward from the end away from the ring plate (120) to form an extension tube covering the wire (20). The outer wall of the extension tube is provided with an external thread (221) and a deformation part (222). The locking member also includes a rotating end cap (140) covering the wire (20). The rotating end cap (140) is provided with an internal thread (411) and a pressing part (412). When the rotating end cap (140) is connected to the external thread (221) through the internal thread (411), the pressing part (412) pushes the deformation part (222) to hold the wire (20).

5. The sheath structure for a terminal block according to claim 4, characterized in that: The deformable part (222) includes a frustum surface (401) provided on the outer wall of the extension tube along the circumference of the extension tube, and a gap groove (402) penetrating the extension tube is provided on the frustum surface (401) along its circumference. The extrusion part (412) includes an extrusion surface disposed circumferentially within the rotating end cover (140) and the extrusion surface extrudes the frustum surface (401) to cause the deformation part (222) to hold the wire (20).

6. The sheath structure for a terminal block according to claim 3, characterized in that: Anti-slip ridges are evenly distributed along the circumference of the outer side wall of the rotating sleeve (130).

7. The sheath structure for a terminal block according to claim 1, characterized in that: Sealing gaskets (300) are fitted inside the first lap groove (302) and the second lap groove (311). When the rotating sleeve (130) installs the ring plate (120), the two ends of the ring plate (120) are squeezed to form the corresponding sealing gaskets (300).

Images