Limiting locking type pull box

Abstract

The utility model discloses a limit locking type pull box, which comprises a shell, a winding wheel and a volute spiral spring, the winding wheel and the volute spiral spring are arranged in the shell, a fixing ring is arranged on the winding wheel, a limit column protruding upwards is arranged on the fixing ring, an embedding groove for the fixing ring to be embedded and installed is arranged on the end face of the winding wheel, and the volute spiral spring is arranged in the shell. A guide groove is formed in the inner upper end face of the shell, and the upper end of the limiting column is located in the guide groove and slides in the extending direction of the guide groove. The pull box is simple in structure and convenient and fast to use, the locking structure is arranged in the shell, so that when the interior of the pull box rotates to a certain angle, the limiting column is located in the V-shaped limiting block for limiting and fixing, a pulled-out wire harness is in a stable state, the volute spiral spring is prevented from being rewound due to elastic deformation force, and the service life of the wire harness is prolonged. And the damage to the pull box or personnel caused by instant rewinding force can be avoided, and the protection effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of wire drawing boxes, in particular to a limit locking type wire drawing box. Background Art

[0002] A wire drawing box is a winding device used to quickly wind up a wire harness. A wire harness is wound around a winding wheel in the device. When in use, the wire harness is pulled out, and when not in use, the wire harness can be automatically retracted, achieving the effect of quick storage, avoiding the situation of the wire harness being randomly placed, and achieving the effect of sorting.

[0003] Currently, the wire drawing boxes on the market usually adopt scroll springs. Due to the good elastic deformation ability of the scroll springs, when stretching / winding, a quick elastic deformation effect can be generated, enabling the wire harness to be quickly pulled out. However, the existing wire drawing boxes lack a locking structure. After the wire harness is pulled out, a certain pulling force needs to be applied to stabilize it, avoiding the wire harness being retracted onto the winding wheel due to the return force of the scroll spring, resulting in limitations in the use of the wire drawing box. Moreover, due to the instantaneous return force of the scroll spring, it may cause certain damage to the wire drawing box or the user, presenting a potential safety hazard.

[0004] Therefore, it is necessary to study a new technical solution to solve the above problems. Content of the Utility Model

[0005] In view of this, in view of the deficiencies of the existing technology, the main purpose of the present utility model is to provide a limit locking type wire drawing box.

[0006] To achieve the above purpose, the present utility model adopts the following technical solutions:

[0007] A limit locking type wire drawing box includes a housing, a winding wheel and a scroll spring arranged in the housing. A fixing ring is arranged on the winding wheel, a limiting post protruding upward is arranged on the fixing ring, an embedding groove for embedding and installing the fixing ring is arranged on the end face of the winding wheel, a guiding groove is arranged on the inner upper end face of the housing, and the upper end of the limiting post is located in the guiding groove and slides along its extending direction.

[0008] As a preference, the housing includes an upper housing and a lower housing. The guiding groove is arranged on the inner upper end face of the upper housing. A positioning post protruding is further arranged at the center of the upper housing. A through hole penetrating up and down is arranged at the center of the winding wheel, facilitating the winding wheel to pass through the positioning post and be fixed between the upper housing and the lower housing.

[0009] As a preference, the embedding groove is arranged on the upper end face of the winding wheel and at the edge. The fixing ring is movably installed in the embedding groove, and the limiting post moves along the extending direction of the guiding groove and makes the fixing ring rotate in the embedding groove.

[0010] Preferably, the guiding groove is in a ring structure, and a V-shaped limiting block and an arc-shaped guiding block are arranged in the guiding groove. The arc-shaped guiding block is located above the V-shaped limiting block and is used for allowing the limiting post to slide onto the arc-shaped end surface of the arc-shaped guiding block and then fall into the lower V-shaped limiting block for limiting and locking.

[0011] Preferably, the number of the V-shaped limiting blocks and the arc-shaped guiding blocks is plural, and the plural V-shaped limiting blocks and arc-shaped guiding blocks are distributed in a circular array in the guiding groove.

[0012] Preferably, a wire outlet hole is arranged on the side end surfaces of the upper shell and the lower shell. The wire outlet hole is formed by assembling two semi-circular through holes, and the semi-circular through holes are respectively arranged at the joint of the upper shell and the lower shell, so that the wire outlet hole is formed when the two are buckled together.

[0013] Preferably, a wire outlet sheath is arranged at the wire outlet hole. The wire outlet sheath is detachably clamped between the two semi-circular through holes. The wire outlet sheath has a structure with larger ends and a smaller middle, so that the middle position of the wire outlet sheath is clamped in the wire outlet hole, and the end surfaces of both ends abut against the inner and outer side end surfaces of the upper shell and the lower shell.

[0014] Preferably, a stretching wire is wound around the wire winding wheel. One end of the stretching wire is fixed on the wire winding wheel, and the other end extends out of the wire outlet hole for the user to pull out / roll in.

[0015] Preferably, the scroll spring is wound in the central area of the wire winding wheel and is located at the back of the embedding groove. A fixed clamping groove is arranged on the positioning post. The fixed clamping groove extends downward from the upper end surface of the positioning post. One end of the scroll spring is clamped in the fixed clamping groove, and the other end is clamped on the inner side end surface of the wire winding wheel. When the wire winding wheel rotates, the scroll spring is relaxed / wound as the wire winding wheel rotates.

[0016] Preferably, a protective end cover is further arranged on the wire winding wheel. The protective end cover covers above the scroll spring. A protruding hook is arranged at the edge of the protective end cover. A corresponding clamping groove is arranged on the wire winding wheel. The protective end cover and the wire winding wheel are installed and fixed together by a snap connection method.

[0017] The utility model has obvious advantages and beneficial effects compared with the prior art. Specifically, as can be seen from the above technical solutions:

[0018] The utility model has a simple structure and is convenient and fast to use. By arranging a locking structure inside the shell, when the inside of the wire drawing box rotates to a certain angle, the limiting post is positioned and fixed in the V-shaped limiting block, so that the drawn wire harness is in a stable state, and the scroll spring is prevented from being rewound due to elastic deformation force. It can also solve the damage to the wire drawing box or personnel caused by the instantaneous rewinding force, playing a protective role.

[0019] When the fixing ring is installed on the wire winding wheel, it is in a rotatable state; when the wire winding wheel is pulled out / rewound, the fixing ring can rotate in the embedding groove, and the limiting post at the upper end can move along the guiding groove, so that it can move continuously along the annular guiding groove. When limiting and clamping is required, the limiting post is moved to the arc-shaped guiding block, and then it falls into the lower V-shaped limiting block for limiting and clamping; conversely, the limiting post is moved out of the groove of the V-shaped limiting block, so that the scroll spring can be subjected to the rewinding force and wind back the wire harness. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0022] Figure 2 It is a schematic diagram of the disassembled structure of the utility model.

[0023] Figure 3 It is a schematic diagram of the disassembled structure of the utility model from another perspective.

[0024] Figure 4 It is a schematic diagram of the structure of the wire winding wheel of the utility model.

[0025] Figure 5 It is a schematic diagram of another perspective structure of the wire winding wheel of the utility model.

[0026] Among them, the reference numerals in the drawings are as follows:

[0027] 10, housing; 11, upper housing; 12, lower housing; 13, guiding groove; 14, positioning post; 15, V-shaped limiting block; 16, arc-shaped guiding block; 17, wire outlet hole; 18, fixing clip groove; 20, wire winding wheel; 21, embedding groove; 22, stretching wire; 23, clamping groove; 30, scroll spring; 40, fixing ring; 41, limiting post; 50, wire outlet sheath; 60, protective end cover; 61, hook. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clear and understandable, the following further details this application in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not used to limit this application.

[0029] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0030] It should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing this application 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 to this application.

[0031] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, "a plurality" means two or more, unless otherwise specifically defined.

[0032] In order to make the purpose, technical solution and advantages of this utility model more clear and understandable, the following further details this utility model in conjunction with the accompanying drawings and embodiments.

[0033] Refer to the attached Figures 1-5 As shown: A limit locking type wire drawing box includes a housing 10 and a wire winding wheel 20 and a scroll spring 30 disposed in the housing 10. By providing a fixing ring 40 on the wire winding wheel 20, and providing an upwardly protruding limit post 41 on the fixing ring 40, an embedding groove 21 for embedding and installing the fixing ring 40 is further provided on the end face of the wire winding wheel 20. And by providing a guiding groove 13 on the inner upper end face of the housing 10, the upper end of the limit post 41 can be located in the guiding groove 13, and the limit post 41 is slidably limited along the extending direction of the guiding groove 13, so that the limit post 41 can move in the guiding groove 13 and be locked and restricted in the guiding groove 13.

[0034] In this embodiment, the housing 10 includes an upper shell 11 and a lower shell 12. By providing a guiding groove 13 on the inner upper end surface of the upper shell 11, a protruding positioning post 14 is further provided at the center of the upper shell 11. A through hole penetrating up and down is provided at the center of the wire reel 20, facilitating the installation of the wire reel 20 through the positioning post 14 and fixing the wire reel 20 between the upper shell 11 and the lower shell 12.

[0035] In this embodiment, an embedding groove 21 is provided on the upper end surface of the wire reel 20, and the embedding groove 21 is located at the edge of the wire reel 20. By movably installing a fixing ring 40 in the embedding groove 21 and moving the upper limiting post 41 along the extending direction of the guiding groove 13, the fixing ring 40 can rotate in the embedding groove 21. By continuously rotating the fixing ring 40, the position of the upper limiting post 41 is changed.

[0036] Specifically, the guiding groove 13 has an annular structure. A V-shaped limiting block 15 and an arc-shaped guiding block 16 are further provided in the guiding groove 13. The arc-shaped guiding block 16 is arranged above the V-shaped limiting block 15. When the limiting post 41 slides onto the arc-shaped end surface of the arc-shaped guiding block 16, it can slide into the lower V-shaped limiting block 15 for limiting and locking, thereby achieving the effect of limiting and locking.

[0037] Furthermore, the number of the used V-shaped limiting blocks and arc-shaped guiding blocks 16 is set to a plurality. The plurality of V-shaped limiting blocks 15 and arc-shaped guiding blocks 16 are annularly and arrayedly distributed in the guiding groove 13, so that the wire drawing box has multiple regions of limiting and locking, realizing locking states at different distances.

[0038] In this embodiment, a wire outlet hole 17 is further provided on the side end surfaces of the upper shell 11 and the lower shell 12. The wire outlet hole 17 is formed by assembling two semi-circular through holes, and the semi-circular through holes are respectively provided at the joint of the upper shell 11 and the lower shell 12. When the upper shell 11 and the lower shell 12 are buckled together, the wire outlet hole 17 is formed.

[0039] Specifically, a wire outlet sheath 50 is further provided at the wire outlet hole 17. The wire outlet sheath 50 is detachably clamped between the two semi-circular through holes, and the wire outlet sheath 50 has a structure with larger ends and a smaller middle. The middle position of the wire outlet sheath 50 can be clamped in the wire outlet hole 17, and then the end faces at both ends abut against the inner and outer side end surfaces of the upper shell 11 and the lower shell 12, forming a limiting effect to prevent the wire outlet sheath 50 from falling out of the wire outlet hole 17.

[0040] In this embodiment, a tensile wire 22 is wound around the wire reel 20. One end of the tensile wire 22 is fixed on the wire reel 20, and the other end extends out of the wire outlet hole 17 for the user to pull out / roll in.

[0041] In this embodiment, the spiral spring 30 is wound to the center area of ​​the winding wheel 20, so that the spiral spring 30 is located on the back of the embedding groove 21 and is stored in the winding wheel 20, and a fixing clamping groove 18 is provided on the positioning column 14, wherein the fixing clamping groove 18 extends downward from the upper end surface of the positioning column 14, so that one end of the spiral spring 30 can be clamped in the fixing clamping groove 18, and the other end is clamped on the inner end surface of the winding wheel 20. When in use, when the winding wheel 20 rotates, the spiral spring 30 is elastically deformed with the rotation of the winding wheel 20 to relax / wind up. When in the relaxed state, the stretch line 22 can be pulled out; when in the wound state, the stretch line 22 can be wound onto the winding wheel 20.

[0042] Specifically, a protective end cover 60 is provided on the winding wheel 20, and the protective end cover 60 is covered on the top of the spiral spring 30, wherein a protruding hook 61 is provided at the edge of the protective end cover 60, and a corresponding slot 23 is provided on the winding wheel 20, so that the protective end cover 60 and the winding wheel 20 can be installed and fixed together by a snap connection, which is used to limit the spiral spring 30 in the winding wheel 20 to prevent it from detaching, causing the winding wheel 20 to be unable to be used normally.

[0043] The above are only preferred embodiments of the present invention, and only specifically describe the technical principles of the present invention. These descriptions are only for the purpose of explaining the principles of the present invention, and cannot be interpreted in any way as limiting the scope of protection of the present invention. Based on the explanation here, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention, and other specific implementation methods of the present invention that can be associated with by technicians in this field without creative labor, should be included in the scope of protection of the present invention.

Claims

1. A limit locking type wire pulling box, comprising a housing, a winding wheel and a spiral spring arranged in the housing, characterized in that: The winding wheel is provided with a fixing ring, the fixing ring is provided with a limiting column protruding upward, the end surface of the winding wheel is provided with an embedding groove for the fixing ring to be embedded and installed, the inner upper end surface of the shell is provided with a guide groove, the upper end of the limiting column is located in the guide groove and slides along its extension direction.

2. The limit locking type wire draw box according to claim 1, characterized in that: The shell body includes an upper shell and a lower shell, the guide groove is arranged on the inner upper end surface of the upper shell, a protruding positioning column is also provided at the center of the upper shell, and a through hole that passes through the upper and lower parts is provided at the center of the winding wheel, so that the winding wheel can pass through the positioning column and be fixed between the upper shell and the lower shell.

3. The limit locking type wire draw box according to claim 2, characterized in that: The embedding groove is arranged on the upper end surface of the winding wheel and is located at the edge. The fixing ring is movably installed in the embedding groove. The limiting column moves along the extension direction of the guide groove and enables the fixing ring to rotate in the embedding groove.

4. The limit locking type wire draw box according to claim 1, characterized in that: The guide groove is an annular structure, and is provided with a V-shaped limit block and an arc-shaped guide block. The arc-shaped guide block is located above the V-shaped limit block and is used for the limit column to slide onto the arc-shaped end surface of the arc-shaped guide block, and then fall into the V-shaped limit block below for limit locking.

5. The limit locking type wire draw box according to claim 4, characterized in that: The number of the V-shaped limit blocks and the arc-shaped guide blocks is set to be plural, and the plural V-shaped limit blocks and the arc-shaped guide blocks are distributed in the guide groove in a ring array.

6. The position-limiting and locking wire draw box according to claim 2 is characterized in that: The side end surfaces of the upper shell and the lower shell are provided with a wire outlet hole, which is assembled from two semicircular through holes. The semicircular through holes are respectively arranged at the junction of the upper shell and the lower shell, so that the wire outlet hole is formed when the two are buckled together.

7. The limit locking type wire draw box according to claim 6, characterized in that: A wire outlet sheath is provided at the wire outlet hole, and the wire outlet sheath is detachably clamped between the two semicircular through holes. The wire outlet sheath has a structure with large ends and a small middle, so that the middle position of the wire outlet sheath is clamped in the wire outlet hole, and the end faces at both ends are against the inner and outer end faces of the upper shell and the lower shell.

8. The limit locking type wire draw box according to claim 6, characterized in that: A stretch line is wound around the winding wheel, one end of the stretch line is fixed on the winding wheel, and the other end extends out from the line outlet hole so as to be pulled out / wound in by a user.

9. The limit locking type wire draw box according to claim 2, characterized in that: The spiral spring is wound in the central area of ​​the winding wheel and is located on the back of the embedding groove. The positioning column is provided with a fixing clamping groove, and the fixing clamping groove extends downward from the upper end surface of the positioning column. One end of the spiral spring is clamped in the fixing clamping groove, and the other end is clamped on the inner end surface of the winding wheel. When the winding wheel rotates, the spiral spring is relaxed / wound with the rotation of the winding wheel.

10. The limit locking type wire draw box according to claim 9, characterized in that: The winding wheel is also provided with a protective end cover, which covers the top of the spiral spring. A protruding hook is provided at the edge of the protective end cover, and a corresponding slot is provided on the winding wheel. The protective end cover and the winding wheel are installed and fixed together by a snap connection.

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