Integrally-formed safety contact edge strip

Abstract

The utility model belongs to the technical field of safety protection equipment, and provides an integrally-formed safety contact edge strip which comprises a rubber framework, the rubber framework comprises a bottom face part, a bent part and an arch-shaped part which are integrally formed, the bent part is located between the bottom face part and the arch-shaped part, and a first conductive rubber strip is arranged on the side, facing the arch-shaped part, of the bent part. A second conductive rubber strip corresponding to the first conductive rubber strip is arranged at the top of the inner side of the arched part, the first conductive rubber strip and the second conductive rubber strip are arranged in the length direction of the rubber framework, and at least one conductive wire is arranged in each of the first conductive rubber strip and the second conductive rubber strip in the length direction; a first deformation cavity is defined by the bending part, the arched part, the first conductive rubber strip and the second conductive rubber strip, and a second deformation cavity is defined by the bending part and the bottom surface part. According to the safety edge strip, external pressure or impact signals can be detected, the detection sensitivity is high, the impact touch feeling can be improved, and the service life of the safety edge strip is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of safety protection equipment, in particular to an integrally formed safety edge strip. Background Art

[0002] Safety edge is a pressure-sensitive switch in the form of a rubber band. Safety edge and safety buffer are flexible and bendable bands that can be fixed on the edges of moving parts such as machine tool workbenches and electric doors where there is a risk of squeezing and shearing.

[0003] When the safety edge is subjected to external pressure or impact, such as being touched or collided by a person or object, these flexible safety edges will be compressed, and the sensor or switch device inside will immediately sense this change. Once it senses external pressure or impact, it will quickly generate a signal output, which is usually connected to the control system or safety device to trigger the corresponding safety protection measures. In the application scenario of the safety edge, after receiving the signal, the control system or safety device will immediately perform the corresponding action, such as stopping the movement of the equipment, cutting off the power supply, etc., to ensure the safety of people and objects. This working principle makes the safety edge widely used in industrial production, automated warehouses, logistics systems, electric doors, amusement facilities and other fields.

[0004] Although the current safety touch edge structure can detect external pressure or impact, it has poor impact touch, low detection sensitivity, poor waterproof performance, short service life, and cumbersome and inconvenient installation and operation. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, in-depth research was conducted and a lot of creative work was put into practice, thus completing the present utility model.

[0006] Specifically, the technical problem to be solved by the utility model is to provide an integrally formed safety touch edge strip to solve the technical problems of the current safety touch edge, poor impact tactile feel, low detection sensitivity, poor waterproof performance and short service life.

[0007] In order to solve the above technical problems, the technical solution of the utility model is:

[0008] An integrally formed safety touch edge strip comprises a rubber skeleton, wherein the rubber skeleton comprises an integrally formed bottom surface portion, a bent portion and an arched portion, wherein the bent portion is located between the bottom surface portion and the arched portion, a first conductive rubber strip is provided on the side of the bent portion facing the arched portion, a second conductive rubber strip is provided on the inner top of the arched portion, the first conductive rubber strip and the second conductive rubber strip are both arranged along the length direction of the rubber skeleton, and the second conductive rubber strip corresponds to the first conductive rubber strip, at least one conductive wire is provided in the first conductive rubber strip and the second conductive rubber strip along their length directions, a first deformation cavity is formed between the bent portion, the arched portion, the first conductive rubber strip and the second conductive rubber strip, and a second deformation cavity is formed between the bent portion and the bottom surface portion.

[0009] As an improved technical solution, the bending portion includes an integrally formed extension portion and a rubber strip supporting portion, and two extension portions are correspondingly provided, one end of the extension portion is connected to the arch portion, and the other end of the extension portion extends relative to the bottom surface portion in a direction close to the arch portion, the rubber strip supporting portion is located between the two extension portions, and the two ends of the rubber strip supporting portion are respectively connected to the other end of the extension portion, and the first conductive rubber strip is located in the rubber strip supporting portion.

[0010] As an improved technical solution, the rubber strip supporting portion forms a rubber strip laying groove, and the first conductive rubber strip is located in the rubber strip laying groove.

[0011] As an improved technical solution, the side of the first conductive rubber strip facing the second conductive rubber strip is a planar structure, and the side of the second conductive rubber strip facing the first conductive rubber strip is a curved structure;

[0012] Alternatively, a side of the first conductive rubber strip facing the second conductive rubber strip is a curved structure, and a side of the second conductive rubber strip facing the first conductive rubber strip is a flat structure.

[0013] As an improved technical solution, a supporting groove is provided on a side of the bottom surface portion facing the bending portion, and the supporting groove corresponds to the rubber strip supporting portion.

[0014] As an improved technical solution, a conductive wire is respectively provided in the first conductive rubber strip and the second conductive rubber strip, and the conductive wire is respectively located at the center of the first conductive rubber strip and the second conductive rubber strip, and the conductive wire includes a bulletproof wire, a copper foil wire and a silver foil wire, and the copper foil wire and the silver foil wire are wound around the bulletproof wire.

[0015] As an improved technical solution, one end of the conductive wire extends outside the first conductive rubber strip and the second conductive rubber strip respectively and is connected to a wire, and the connection ends of the conductive wire and the wire are wrapped with a waterproof plug, and the waterproof plug is integrally injection molded with the conductive wire and the wire.

[0016] As an improved technical solution, a skeleton end piece is provided at the end of the rubber skeleton, and the skeleton end piece includes an integrally formed insertion part and a wire-isolating part, the insertion part is adapted to and inserted into the first deformation cavity, the wire-isolating part is located outside the rubber skeleton, and wire-avoiding grooves corresponding to the conductive wires are respectively provided on both sides of the wire-isolating part, the conductive wires are respectively located on both sides of the wire-isolating part and extend into the wire-avoiding grooves, and the waterproof plug wraps the wire-isolating part.

[0017] As an improved technical solution, the rubber skeleton also includes an integrally formed T-shaped mounting portion, the T-shaped mounting portion is connected to the bottom portion, and a slot is formed between the T-shaped mounting portion and the bottom portion, and the slot is respectively located on both sides of the rubber skeleton.

[0018] As an improved technical solution, the integrally formed safety touch edge strip further comprises a mounting profile having a card edge matched with the card slot, and the rubber frame is mounted on the mounting profile via the card slot and the card edge.

[0019] After adopting the above technical solution, the beneficial effects of the utility model are:

[0020] When the one-piece safety touch edge strip is subjected to external pressure or impact, the arched part of the rubber skeleton is deformed first, that is, the first deformation cavity changes, so that the second conductive rubber strip contacts the first conductive rubber strip, so that the external pressure or impact signal can be detected with high detection sensitivity. When the second conductive rubber strip contacts the first conductive rubber strip, under the continued action of the external pressure or impact, the bent part is deformed accordingly, that is, the second deformation cavity changes, and force buffering is achieved, thereby improving the impact touch and extending the service life of the safety touch edge strip. In addition, the one-piece safety touch edge strip is small in size, simple and convenient to install and use, and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0022] Figure 1This is a schematic diagram of the structure of the one-piece safety edge contact strip of the utility model;

[0023] Figure 2 It is a schematic diagram of the installation structure of the frame end piece of the utility model at the end of the rubber frame;

[0024] Figure 3 This is a schematic diagram of the structure of the utility model in which the integrally formed safety edge contact strip is not connected to the wires;

[0025] Figure 4 It is a schematic diagram of the exploded structure of the integrally formed safety edge contact strip terminal of the utility model;

[0026] Figure 5 This is a partial structural schematic diagram of the integrally formed safety edge strip of the utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the rubber skeleton part of the utility model;

[0028] Figure 7 for Figure 6 A schematic diagram of the cross-sectional structure of the middle rubber skeleton;

[0029] Figure 8 This is a schematic cross-sectional view of the rubber skeleton of the utility model;

[0030] Fig. 9 It is a three-dimensional structural schematic diagram of the skeleton end piece of the utility model;

[0031] Fig.10 Another three-dimensional structural schematic diagram of the skeleton end piece of the utility model;

[0032] Fig.11 It is a structural schematic diagram of the installation profile of the utility model;

[0033] Fig.12 It is a left-side structural schematic diagram of the installation profile of the utility model;

[0034] Reference numerals: 1-rubber skeleton; 101-bottom part; 1011-supporting groove; 102-bending part; 1021-extension part; 1022-rubber strip supporting part; 1023-rubber strip laying groove; 103-arched part; 104-T-shaped mounting part; 105-slot;

[0035] 2-first conductive rubber strip; 3-second conductive rubber strip; 4-conductive wire; 5-first deformation cavity; 6-second deformation cavity;

[0036] 7-conductor wire; 8-waterproof plug; 9-frame end piece; 901-insertion part; 902-wire separation part; 9021-wire avoidance groove; 10-installation profile; 1001-card edge. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0039] At the same time, the meaning of "and / or" or "and / or" appearing in the full text includes three options. Taking "A and / or B" as an example, it includes option A, or option B, or a option in which both A and B are satisfied.

[0040] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0041] like Figures 1 to 12As shown together, the present embodiment provides an integrally molded safety touch edge strip, including a rubber skeleton 1, the rubber skeleton 1 including an integrally molded bottom portion 101, a bending portion 102 and an arched portion 103, the bending portion 102 is located between the bottom portion 101 and the arched portion 103, a first conductive rubber strip 2 is provided on the side of the bending portion 102 facing the arched portion 103, a second conductive rubber strip 3 is provided on the inner top of the arched portion 103, the first conductive rubber strip 2 and the second conductive rubber strip 3 are both arranged along the length direction of the rubber skeleton 1, and the second conductive rubber strip 3 corresponds to the first conductive rubber strip 2, at least one conductive wire 4 is provided in the first conductive rubber strip 2 and the second conductive rubber strip 3 along their length directions, a first deformation cavity 5 is formed between the bending portion 102, the arched portion 103, the first conductive rubber strip 2 and the second conductive rubber strip 3, and a second deformation cavity 6 is formed between the bending portion 102 and the bottom portion 101. When subjected to external pressure or impact, the arched portion 103 of the rubber skeleton 1 is deformed first, that is, the first deformation cavity 5 changes, so that the second conductive rubber strip 3 contacts the first conductive rubber strip 2. After the second conductive rubber strip 3 contacts the first conductive rubber strip 2, under the continued action of the external pressure or impact, the bent portion 102 is deformed accordingly, that is, the second deformation cavity 6 changes.

[0042] In one embodiment, if Figures 3 to 8 As shown together, the bending portion 102 includes an integrally formed extension portion 1021 and a rubber strip supporting portion 1022, two extension portions 1021 are provided, one end of the extension portion 1021 is connected to the arch portion 103, and the other end of the extension portion 1021 extends relative to the bottom surface portion 101 toward the direction close to the arch portion 103, the rubber strip supporting portion 1022 is located between the two extension portions 1021, and the two ends of the rubber strip supporting portion 1022 are respectively connected to the other end of the extension portion 1021, and the first conductive rubber strip 2 is located in the rubber strip supporting portion 1022. Therefore, when subjected to external pressure or impact, it is convenient to achieve contact between the second conductive rubber strip 3 and the first conductive rubber strip 2, thereby achieving effective detection of external pressure or impact signals, with high detection sensitivity, and the bending portion 102 is easy to deform, which can achieve force buffering and enhance the impact touch.

[0043] In one embodiment, if Figures 3 to 8 As shown together, the rubber strip supporting portion 1022 forms a rubber strip laying groove 1023, and the first conductive rubber strip 2 is located in the rubber strip laying groove 1023. Thus, it is convenient to achieve close cooperation between the first conductive rubber strip 2 and the bending portion 102, and the structural strength of the entire bending portion 102 is high.

[0044] In one embodiment, if Figures 3 to 7As shown together, the side of the first conductive rubber strip 2 facing the second conductive rubber strip 3 is a planar structure, and the side of the second conductive rubber strip 3 facing the first conductive rubber strip 2 is an arc structure; thereby, it is easy to achieve contact between the second conductive rubber strip 3 and the first conductive rubber strip 2, realize detection of external pressure or impact, and improve detection sensitivity.

[0045] In another embodiment, the side of the first conductive rubber strip 2 facing the second conductive rubber strip 3 is a curved structure, and the side of the second conductive rubber strip 3 facing the first conductive rubber strip 2 is a flat structure; thereby, it is easy to achieve contact between the second conductive rubber strip 3 and the first conductive rubber strip 2, realize detection of external pressure or impact, and improve detection sensitivity.

[0046] In one embodiment, if Figures 3 to 8 As shown together, a supporting groove 1011 is provided on one side of the bottom surface 101 facing the bending portion 102, and the supporting groove 1011 corresponds to the rubber strip supporting portion 1022, and the outer contour of the supporting groove 1011 is substantially consistent with the outer contour of the rubber strip supporting portion 1022. Under the action of external pressure or impact, when the rubber strip supporting portion 1022 is pressed down to abut against the supporting groove 1011, the supporting groove 1011 realizes supporting protection for the rubber strip supporting portion 1022.

[0047] In one embodiment, if Figures 2 to 7 As shown together, a conductive wire 4 is respectively provided in the first conductive rubber strip 2 and the second conductive rubber strip 3, and the conductive wire 4 is respectively located at the center of the first conductive rubber strip 2 and the second conductive rubber strip 3, so that good conductive performance is achieved while the manufacturing cost is low; the conductive wire 4 includes bulletproof wire, copper foil wire and silver foil wire, and the copper foil wire and the silver foil wire are wound on the bulletproof wire, which greatly improves the conductive performance of the conductive wire 4, and has good toughness and yield resistance, thereby greatly improving the detection sensitivity and service life of the one-piece molded safety touch edge strip.

[0048] In one embodiment, if Figures 1 to 6 As shown together, one end of the conductive wire 4 extends to the outside of the first conductive rubber strip 2 and the second conductive rubber strip 3 respectively and is connected to a wire 7. The connection ends of the conductive wire 4 and the wire 7 are wrapped with a waterproof plug 8. The waterproof plug 8 is integrally injection-molded with the conductive wire 4 and the wire 7, which can achieve good sealing protection, play an effective waterproof role, and extend the service life of the integrally molded safety touch edge strip. One end of the wire 7 away from the conductive wire 4 is used to connect to the controller, and the wire 7 transmits the detection signal to the controller.

[0049] In one embodiment, if Figures 1 to 6 , Fig. 9 and Fig.10As shown together, a skeleton end piece 9 is provided at the end of the rubber skeleton 1, and the skeleton end piece 9 includes an integrally formed insertion portion 901 and a wire-isolating portion 902, the insertion portion 901 is adapted to the first deformation cavity 5 and is inserted into the first deformation cavity 5, the wire-isolating portion 902 is located outside the rubber skeleton 1, and wire-avoiding grooves 9021 corresponding to the conductive wires 4 are respectively provided on both sides of the wire-isolating portion 902, the conductive wires 4 are respectively located on both sides of the wire-isolating portion 902 and extend into the wire-avoiding grooves 9021, and the waterproof plug 8 wraps the wire-isolating portion 902. The provided skeleton end piece 9 is convenient for separating the two conductive wires 4. When in use, the skeleton end piece 9 is installed on the end of the rubber skeleton 1, and then the conductive wire 4 and the wire 7 are connected. After that, the connected components are placed in the injection molding equipment, and the waterproof plug 8 is obtained by the injection molding process. Since the waterproof plug 8 wraps the wiring terminals of the conductive wire 4 and the wire 7, a good sealing of the wiring terminals is achieved, and the waterproof plug 8 is integrally formed with the wire 7 and the rubber skeleton 1, it has better waterproof performance, achieves complete waterproof sealing, and greatly extends the service life of the integrally formed safety touch edge strip.

[0050] In one embodiment, if Figures 2 to 8 As shown together, the rubber skeleton 1 also includes an integrally formed T-shaped mounting portion 104, which is connected to the bottom portion 101, and a slot 105 is formed between the T-shaped mounting portion 104 and the bottom portion 101, and the slots 105 are respectively located on both sides of the rubber skeleton 1, and the installation and disassembly of the rubber skeleton 1 are facilitated by the slots 105.

[0051] In one embodiment, if Figures 1 to 8 , Fig.11 and Fig.12 As shown in the figure, the integrally formed safety edge strip also includes a mounting profile 10, which has a clamping edge 1001 adapted to the clamping slot 105, and the rubber skeleton 1 is mounted on the mounting profile 10 through the clamping slot 105 and the clamping edge 1001. When in use, the mounting profile 10 is first fixed to a moving part with a risk of extrusion and shearing, such as a machine tool workbench and an electric door, and then the rubber skeleton 1 is mounted on the mounting profile 10, which is simple and convenient to install and use.

[0052] Based on the one-piece safety touch edge strip of the above structure, when subjected to external pressure or impact, the arched portion 103 of the rubber skeleton 1 is deformed first, that is, the first deformation cavity 5 changes, so that the second conductive rubber strip 3 contacts the first conductive rubber strip 2, so that the external pressure or impact signal can be detected with high detection sensitivity. When the second conductive rubber strip 3 contacts the first conductive rubber strip 2, under the continued action of external pressure or impact, the bent portion 102 is deformed accordingly, that is, the second deformation cavity 6 changes, and force buffering is achieved, thereby improving the impact touch and extending the service life of the safety touch edge strip. In addition, the one-piece safety touch edge strip is small in size, simple and convenient to install and use, and has strong practicality.

[0053] It can be understood that the one-piece molded safety edge strip can be installed on moving parts such as machine tool workbenches and electric doors where there is a risk of extrusion and shearing. It can also be installed and used in industrial production, automated warehouses, logistics systems, amusement facilities and other fields. It is simple and convenient to install and operate, has a wide range of uses, is highly practical, and can provide good safety protection effects.

[0054] It should be understood that the purpose of these embodiments is only to illustrate the utility model and is not intended to limit the protection scope of the utility model. In addition, it should also be understood that after reading the technical content of the utility model, those skilled in the art can make various changes, modifications and / or variations to the utility model, and all of these equivalent forms also fall within the protection scope defined by the claims attached to this application.

Claims

1. An integrally formed safety edge strip, characterized in that: The invention comprises a rubber skeleton, wherein the rubber skeleton comprises an integrally formed bottom surface portion, a bending portion and an arched portion, wherein the bending portion is located between the bottom surface portion and the arched portion, a first conductive rubber strip is arranged on a side of the bending portion facing the arched portion, a second conductive rubber strip is arranged on an inner top of the arched portion, the first conductive rubber strip and the second conductive rubber strip are both arranged along a length direction of the rubber skeleton, and the second conductive rubber strip corresponds to the first conductive rubber strip, at least one conductive wire is arranged in the first conductive rubber strip and the second conductive rubber strip along their length directions, a first deformation cavity is formed between the bending portion, the arched portion, the first conductive rubber strip and the second conductive rubber strip, and a second deformation cavity is formed between the bending portion and the bottom surface portion.

2. The one-piece safety edge strip according to claim 1, characterized in that: The bending portion includes an integrally formed extension portion and a rubber strip supporting portion, and two extension portions are correspondingly provided, one end of the extension portion is connected to the arch portion, and the other end of the extension portion extends relative to the bottom surface portion toward the direction close to the arch portion, the rubber strip supporting portion is located between the two extension portions, and the two ends of the rubber strip supporting portion are respectively connected to the other end of the extension portion, and the first conductive rubber strip is located in the rubber strip supporting portion.

3. The integrally formed safety edge strip according to claim 2, characterized in that: The rubber strip supporting portion forms a rubber strip laying groove, and the first conductive rubber strip is located in the rubber strip laying groove.

4. The integrally formed safety edge strip according to claim 3, characterized in that: The side of the first conductive rubber strip facing the second conductive rubber strip is a planar structure, and the side of the second conductive rubber strip facing the first conductive rubber strip is a curved structure; Alternatively, a side of the first conductive rubber strip facing the second conductive rubber strip is a curved structure, and a side of the second conductive rubber strip facing the first conductive rubber strip is a flat structure.

5. The integrally formed safety edge strip according to claim 3, characterized in that: A supporting groove is provided on one side of the bottom surface portion facing the bending portion, and the supporting groove corresponds to the rubber strip supporting portion.

6. The integrally formed safety edge strip according to claim 1, characterized in that: A conductive thread is respectively arranged in the first conductive rubber strip and the second conductive rubber strip, and the conductive thread is respectively located at the center of the first conductive rubber strip and the second conductive rubber strip, and the conductive thread includes a bulletproof thread, a copper foil thread and a silver foil thread, and the copper foil thread and the silver foil thread are wound around the bulletproof thread.

7. The integrally formed safety edge strip according to claim 1, characterized in that: One end of the conductive wire extends outside the first conductive rubber strip and the second conductive rubber strip respectively and is connected to a wire. The wiring ends of the conductive wire and the wire are wrapped with a waterproof plug, and the waterproof plug is integrally injection-molded with the conductive wire and the wire.

8. The integrally formed safety edge strip according to claim 7, characterized in that: A skeleton end piece is provided at the end of the rubber skeleton, and the skeleton end piece includes an integrally formed insertion part and a wire-isolating part. The insertion part is adapted to and inserted into the first deformation cavity. The wire-isolating part is located outside the rubber skeleton, and wire-avoiding grooves corresponding to the conductive wires are respectively provided on both sides of the wire-isolating part. The conductive wires are respectively located on both sides of the wire-isolating part and extend into the wire-avoiding grooves, and the waterproof plug wraps the wire-isolating part.

9. The integrally formed safety edge strip according to any one of claims 1 to 8, characterized in that: The rubber frame also includes an integrally formed T-shaped mounting portion, the T-shaped mounting portion is connected to the bottom portion, and a slot is formed between the T-shaped mounting portion and the bottom portion, and the slots are respectively located on both sides of the rubber frame.

10. The integrally formed safety edge strip according to claim 9, characterized in that: It also includes a mounting profile, which has a clamping edge matched with the clamping groove, and the rubber frame is mounted on the mounting profile through the clamping groove and the clamping edge.

Images