Wire harness connector with high tensile strength and wire harness assembly

Abstract

The invention discloses a high-tensile-strength wire harness connector and a wire harness assembly. The high-tensile-strength wire harness connector comprises a wire harness body and a connector body arranged at one end of the wire harness body. The connector body is provided with a first socket. The open end of the connector body is slidably sleeved with a sliding block. A tension spring is connected between the sliding block and the connector body. The sliding block is provided with a second inserting opening matched with the first inserting opening. The open end of the joint body is provided with two driving rods which correspond to each other up and down; two locking blocks which correspond to each other up and down are vertically arranged at the opening position of the second socket in a sliding manner; a first spring is connected between each locking block and the corresponding sliding block. A driving hole is formed in each locking block in a penetrating manner; the two driving rods penetrate through the two driving holes in a one-to-one correspondence manner; the tensile strength and the use reliability of wire harness connection are effectively improved, and the wire harness is particularly suitable for application scenes with high requirements for signal continuity and connection safety in medical instruments.

Description

Technical Field

[0001] The present invention relates to the technical field of wire harness connectors, and particularly relates to a wire harness joint and a wire harness assembly with high tensile strength. Background Art

[0002] Most of the existing medical wire harness joints fix the wires and terminals by conventional crimping or buckling methods. In daily use, medical wire harness joints are easily interfered by external forces such as medical staff operations, equipment movement, and patient turning. Once the wire harness is pulled, the existing wire harness joints are prone to looseness or accidental disconnection due to external forces, resulting in signal interruption, treatment interruption, etc., affecting the normal operation of medical equipment and posing a great potential safety hazard. Summary of the Invention

[0003] The purpose of the present invention is to overcome the above-mentioned drawbacks, and provide a wire harness joint and a wire harness assembly with high tensile strength, effectively improving the tensile strength and use reliability of the wire harness connection, and being particularly suitable for application scenarios with high requirements for signal continuity and connection safety in medical devices.

[0004] To achieve the above purpose, the specific solutions of the present invention are as follows:

[0005] On the one hand, the present invention provides a wire harness joint with high tensile strength, including a wire harness body and a joint body provided at one end of the wire harness body; the joint body is provided with a first socket; a slider is slidably sleeved at the open end of the joint body; a tension spring is connected between the slider and the joint body; the slider has a second socket adapted to the first socket;

[0006] Two driving rods corresponding to each other up and down are provided at the open end of the joint body; two locking blocks corresponding to each other up and down are vertically slidably provided at the opening position of the second socket; a first spring is connected between each locking block and the slider; each locking block is provided with a driving hole; the two driving rods respectively penetrate through the two driving holes.

[0007] Further, tension springs are connected between both the upper and lower sides of the slider and the joint body.

[0008] Further, two first springs are connected between each locking block and the slider; the two first springs are arranged at intervals.

[0009] Further, an arc portion is provided at the end of the locking block extending into the second socket.

[0010] Further, the driving hole includes a vertical section and an inclined section; one end of the vertical section is connected to one end of the inclined section.

[0011] Further, a locking key is vertically slidably provided on the top surface of the joint body; a second spring is connected between the locking key and the joint body; the slider is provided with a jack; a locking groove is provided in the jack; the locking key extends with an extension arm; the extension arm movably penetrates through the joint body and then movably inserts into the jack; a locking platform capable of inserting into the locking groove is provided at the end of the extension arm.

[0012] Further, the number of the second springs is two, and the two second springs are arranged at intervals.

[0013] Further, extension arms are respectively provided at both ends of the locking key; the slider is correspondingly provided with two jacks; the ends of the two extension arms are respectively inserted into the two jacks in one-to-one correspondence.

[0014] On the other hand, the present invention also provides a wire harness assembly, including a connector and the wire harness joint as described above; the connector includes a connector body having an insertion port; an inverted triangular locking boss is provided in the insertion port; the small end of the locking boss is away from the opening position of the insertion port; on the inner wall of the insertion port, top plates are respectively horizontally slidably provided on both sides above and below the locking boss; a third spring is connected between the top plate and the connector; the stiffness of the third spring is less than that of the first spring.

[0015] Further, two third springs arranged at intervals are connected between each top plate and the connector.

[0016] The beneficial effects of the present invention are as follows: Through the cooperation of the locking block and the locking boss, and under the cooperation of the driving rod and the driving hole, the present invention can be automatically locked in the normal insertion state, and when subjected to an external pulling force, the locking strength can be synchronously enhanced to ensure a stable connection under the stressed state, avoid loosening or accidental disconnection, effectively improve the tensile strength and use reliability of the wire harness connection, and is particularly suitable for application scenarios with high requirements for signal continuity and connection safety in medical devices; and the external pulling force can be converted into elastic potential energy to effectively reduce the impact on the wire harness. Description of the Drawings

[0017] Figure 1 is a schematic cross-sectional view of the wire harness assembly of the present invention after the connector and the wire harness joint are inserted;

[0018] Figure 2 is a schematic cross-sectional view of the wire harness assembly of the present invention when subjected to an external pulling force;

[0019] Figure 3 is a schematic structural view of the wire harness joint of the present invention;

[0020] Figure 4 is a schematic cross-sectional view of the wire harness joint of the present invention;

[0021] Figure 5 It is an exploded schematic view of the wire harness connector of the present invention;

[0022] Figure 6 It is a cross-sectional schematic view of another perspective of the wire harness connector of the present invention;

[0023] Figure 7 It is a structural schematic view of the slider of the present invention;

[0024] Figure 8 It is a structural schematic view of the locking block of the present invention;

[0025] Figure 9 It is a cross-sectional view of the connector of the present invention;

[0026] Figure 10 It is a cross-sectional schematic view of the connector of the present invention;

[0027] Explanation of reference numerals: 11, wire harness body; 12, connector body; 121, first socket; 122, driving rod; 13, slider; 131, second socket; 132, jack; 133, locking groove; 14, tension spring; 15, locking block; 151, driving hole; 1511, vertical section; 1512, inclined section; 152, arc portion; 16, first spring; 17, locking key; 171, extension arm; 172, locking platform; 18, second spring; 19, first conductive terminal; 21, connector body; 211, insertion port; 212, locking boss; 22, top plate; 23, third spring; 24, second conductive terminal. Detailed Description of the Invention

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, and the scope of implementation of the present invention is not limited thereto.

[0029] As Figures 1 to 10 shown, a wire harness assembly according to this embodiment includes a connector and a wire harness connector for electrical mating with the connector; the wire harness connector includes a wire harness body 11 and a connector body 12 connected to one end of the wire harness body 11; the connector body 12 is provided with a first socket 121; a first conductive terminal 19 electrically connected to the wire harness body 11 is provided in the first socket 121; a slider 13 is horizontally slidably sleeved on the open end of the connector body 12; a tension spring 14 is connected between the slider 13 and the connector body 12; the slider 13 is kept in contact with the end wall of the connector body 12 under the action of the tension spring 14; the slider 13 has a second socket 131 adapted to the first socket 121; the first socket 121 and the second socket 131 together form a connection port for mating with the connector;

[0030] The open end of the joint body 12 is provided with two driving rods 122 corresponding up and down; at the opening position of the second socket 131, two locking blocks 15 corresponding up and down are vertically slidably arranged; a first spring 16 is connected between each locking block 15 and the slider 13; the two locking blocks 15 respectively extend into the second socket 131 under the elastic force of the first spring 16; each locking block 15 is provided with a driving hole 151 through it; the two driving rods 122 respectively penetrate through the two driving holes 151. In this way, when the joint body 12 moves relative to the slider 13, the joint body 12 can cooperate with the driving hole 151 through the driving rod 122, so that the locking block 15 moves against the elastic force of the first spring 16;

[0031] The connector includes a connector body 21 having an insertion interface 211 for inserting the joint body 12 into the connector for mating operation; a locking boss 212 in an inverted triangle shape is arranged in the insertion interface 211; the small end of the locking boss 212 is far from the opening position of the insertion interface 211; a second conductive terminal 24 for electrically connecting with the first conductive terminal 19 is arranged in the insertion interface 211, and the second conductive terminal 24 is arranged at the large end of the locking boss 212; during mating, the second conductive terminal 24 and the locking boss 212 can extend into the connection port; on the upper and lower sides of the locking boss 212, top plates 22 are respectively horizontally slidably arranged on the inner wall of the insertion interface 211; a third spring 23 is connected between the top plate 22 and the connector; the stiffness of the third spring 23 is less than that of the first spring 16.

[0032] Specifically, when the wire harness assembly of this embodiment is mated, the joint body 12 is inserted into the insertion interface 211, and the second conductive terminal 24 is inserted into the connection port. When the locking boss 212 extends into the connection port, the large ends of the locking boss 212 respectively squeeze the two locking blocks 15, so that the two locking blocks 15 respectively move inwards against the elastic force of the first spring 16, and the driving rod 122 moves along the driving hole 151. As the locking boss 212 extends, the large end of the locking boss 212 gradually releases the extrusion on the locking block 15, and the locking block 15 gradually extends under the elastic force of the first spring 16. When the slider 13 contacts the top plate 22, the slider 13 squeezes the top plate 22, so that the third spring 23 is compressed. Until the top plate 22 is compressed in place, at this time the wire harness joint is inserted in place, the locking block 15 completely extends under the elastic force of the first spring 16, and the locking block 15 does not contact the surface of the locking boss 212;

[0033] Then release the thrust on the wire harness joint. At this time, the third spring 23 pushes the top plate 22 to reset, and the top plate 22 pushes the wire harness joint to withdraw a certain distance until the locking block 15 contacts and abuts against the surface of the locking boss 212 again. Since the stiffness of the first spring 16 is greater than that of the third spring 23, after the locking block 15 contacts the locking boss 212, the reset of the top plate 22 is completed, as Figure 1As shown, at this time, the two locking blocks 15 and the locking boss 212 cooperate to form a locking structure to lock the wire harness connector so that the wire harness connector remains inserted into the connector.

[0034] As Figure 2 shown, when the wire harness connector is subjected to an external pulling force, the connector body 12 moves relative to the connector. The connector body 12 drives the driving rod 122 to move. The driving rod 122 cooperates with the driving hole 151, causing the locking block 15 to tend to protrude. Since the locking block 15 contacts the surface of the locking boss 212 and the stiffness of the first spring 16 is greater than that of the second spring 18, the driving rod 122 pushes the slider 13 to slide relative to the connector body 12 and presses the top plate 22. The top plate 22 compresses the third spring 23, and at the same time, the tension spring 14 is stretched. Also, during the sliding of the slider 13 relative to the connector body 12, the driving rod 122 cooperates with the driving hole 151, causing the locking block 15 to overcome the pulling force of the first spring 16 and continue to protrude until it contacts the surface of the locking boss 212. In this way, the external pulling force is converted into elastic potential energy, avoiding direct impact on the locking structure. At the same time, under the cooperation of the driving rod 122 and the driving hole 151, the locking state of the locking structure is further strengthened, ensuring that the wire harness connector will not become loose due to the pulling force. This structure has the performance that the greater the force, the stronger the locking, effectively solving the risk of the wire harness assembly becoming disconnected due to the wire harness being stressed in the medical field.

[0035] In this embodiment, through the cooperation of the locking block 15 and the locking boss 212, and under the cooperation of the driving rod 122 and the driving hole 151, it can be automatically locked in the normal inserted state. When subjected to an external pulling force, the locking strength can be enhanced synchronously, ensuring a stable connection under the stressed state, avoiding loosening or accidental disconnection, effectively improving the tensile strength and reliability of the wire harness connection, and being particularly suitable for application scenarios in medical devices with high requirements for signal continuity and connection security; and it can convert the external pulling force into elastic potential energy, effectively reducing the impact on the wire harness.

[0036] As Figure 4 and Figure 5 shown, in some embodiments of the wire harness assembly of this embodiment, tension springs 14 are connected between both the upper and lower sides of the slider 13 and the connector body 12. In this embodiment, tension springs 14 are provided on both the upper and lower sides of the slider 13, and the buffering effect is better, which is more conducive to protecting the wire harness.

[0037] As Figure 5 shown, in some embodiments of the wire harness assembly of this embodiment, two first springs 16 are connected between each locking block 15 and the slider 13; the two first springs 16 are arranged at intervals. By providing two first springs 16 in this embodiment, each locking block 15 is more evenly stressed, and when locking, it can have a more sufficient locking and holding force.

[0038] As Figure 4 , Figure 6 and Figure 8 shown, in some embodiments of the wire harness assembly of this embodiment, an arc portion 152 is provided at one end of the locking block 15 that extends into the second socket 131. Through the above arrangement in this embodiment, the locking block 15 can contact the locking boss 212 through the arc portion 152, reducing the friction between the two. During mating, it is easier for the locking block 15 to cross the large end position of the locking boss 212.

[0039] As Figure 8 shown, in some embodiments of the wire harness assembly of this embodiment, the driving hole 151 includes a vertical section 1511 and an inclined section 1512; one end of the vertical section 1511 is connected to one end of the inclined section 1512. Specifically, the driving holes 151 of the two locking blocks 15 are symmetrically arranged up and down; the connection between the vertical section 1511 and the inclined section 1512 forms an inflection point position. When the wire harness connectors are being mated, the driving rod 122 is located at the inflection point position; during mating, the locking block 15 is retracted due to the extrusion of the locking boss 212, and the driving rod 122 enters the vertical section 1511 from the inflection point position. After mating in place, the first spring 16 pushes the locking block 15 to extend, and the driving rod 122 returns to the inflection point position again; when subjected to an external pulling force, the driving rod 122 enters the inclined section 1512 from the inflection point position, thereby driving the slider 13 to squeeze the top plate 22 to slide, and causing the locking block 15 to extend outward against the action of the first spring 16 to maintain the locking fit between the locking block 15 and the locking boss 212. At this time, the first spring 16 is stretched, thus strengthening the locking state.

[0040] As Figures 3 to 6 shown, in some embodiments of the wire harness assembly of this embodiment, a locking key 17 is vertically slidably provided on the top surface of the joint body 12; a second spring 18 is connected between the locking key 17 and the joint body 12; the slider 13 is provided with a socket 132; a locking groove 133 is provided in the socket 132; the locking key 17 extends with an extension arm 171; the extension arm 171 movably passes through the joint body 12 and then movably inserts into the socket 132; a locking platform 172 that can be inserted into the locking groove 133 is provided at the end of the extension arm 171.

[0041] When the wire harness connector is plugged into the connector, the positions of the locking groove 133 and the locking platform 172 correspond to each other; when it is necessary to pull out the wire harness connector from the connector, the locking key 17 is pressed, so that the second spring 18 is compressed, and the locking key 17 slides relative to the connector body 12 until the locking platform 172 is inserted into the locking groove 133. At this time, the connector body 12 is connected to the slider 13 as a rigid whole through the locking key 17. Therefore, when pulling out the wire harness connector outward, the connector body 12 drives the slider 13 to move synchronously. Since there is no relative displacement between the connector body 12 and the slider 13, during the process of pulling out the wire harness connector, the locking block 15 is squeezed by the locking boss 212 and retracts inward against the elastic force of the first spring 16 until the wire harness connector is pulled out from the insertion port 211; after pulling out, just release the pressing of the locking key 17, and the second spring 18 pushes the locking key 17 to reset, so that the locking platform 172 moves out of the locking groove 133, thereby releasing the rigid fit between the connector body 12 and the slider 13.

[0042] As Figure 5 shown, in some embodiments of the wire harness assembly of this embodiment, the number of the second springs 18 is two, and the two second springs 18 are arranged at intervals. By arranging two second springs 18 in this embodiment, the force on the locking key 17 is made more balanced.

[0043] As Figures 5 to 7 shown, in some embodiments of the wire harness assembly of this embodiment, extension arms 171 are respectively arranged at both ends of the locking key 17; two jacks 132 are correspondingly arranged on the slider 13; the ends of the two extension arms 171 are respectively inserted into the two jacks 132. Through the above arrangement in this embodiment, during the process of pulling out the wire harness connector, the locking key 17 enhances the rigid connection strength between the slider 13 and the connector body 12, further ensuring the integrity of the slider 13 and the connector body 12 during the pulling-out process, so that the pulling-out operation of the wire harness connector is reliable.

[0044] In some embodiments of the wire harness assembly of this embodiment, two third springs 23 arranged at intervals are connected between each top plate 22 and the connector. By arranging two third springs 23 in this embodiment, the movement of the top plate 22 is made more stable.

[0045] The above are only the preferred embodiments of the present invention. Therefore, any equivalent changes or modifications made according to the structures, features and principles described in the scope of the patent application of the present invention are included in the protection scope of the patent application of the present invention.

Claims

1. A wire harness connector with high tensile strength, characterized in that, It includes a wire harness body and a connector body provided at one end of the wire harness body; the connector body is provided with a first socket; a slider is slidably sleeved at the open end of the connector body; a tension spring is connected between the slider and the connector body; the slider has a second socket adapted to the first socket. Two vertically corresponding driving rods are provided at the open end of the connector body; two vertically corresponding locking blocks are vertically slidably provided at the opening position of the second socket; a first spring is connected between each locking block and the slider; each locking block is provided with a driving hole therethrough; the two driving rods respectively penetrate through the two driving holes.

2. The wire harness connector with high tensile strength according to claim 1, characterized in that, Tension springs are connected between both the upper and lower sides of the slider and the connector body.

3. The wire harness connector with high tensile strength according to claim 1, characterized in that, Two first springs are connected between each locking block and the slider; the two first springs are arranged at intervals.

4. A wire harness connector with high tensile strength according to claim 1, characterized in that, An arc portion is provided at one end of the locking block extending into the second socket.

5. The wire harness connector with high tensile strength according to claim 1, characterized in that, The driving hole includes a vertical section and an inclined section; one end of the vertical section is connected to one end of the inclined section.

6. The high-tensile-strength wire harness connector according to claim 1, characterized in that, A locking key is vertically slidably provided on the top surface of the connector body; a second spring is connected between the locking key and the connector body; the slider is provided with a jack; a locking groove is provided in the jack; the locking key extends with an extension arm; the extension arm movably penetrates through the connector body and then movably inserts into the jack; a locking platform capable of inserting into the locking groove is provided at the end of the extension arm.

7. The wire harness connector with high tensile strength according to claim 6, characterized in that, The number of the second springs is two, and the two second springs are arranged at intervals.

8. The wire harness connector with high tensile strength according to claim 6, wherein, Extension arms are respectively provided at both ends of the locking key; two jacks are correspondingly provided on the slider; the ends of the two extension arms are respectively inserted into the two jacks correspondingly.

9. A wire harness assembly, characterized in that, It includes a connector and a wire harness connector as described in any one of claims 1 to 8; the connector includes a connector body having an insertion port; an inverted triangular locking boss is provided in the insertion port; the small end of the locking boss is away from the opening position of the insertion port; top plates are horizontally slidably provided on both the upper and lower sides of the locking boss on the inner wall of the insertion port; a third spring is connected between the top plate and the connector; the stiffness of the third spring is less than that of the first spring.

10. A wire harness assembly according to claim 9, characterized in that, Two third springs arranged at intervals are connected between each top plate and the connector.

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