Fast crimping FFC connector

Abstract

The invention relates to the technical field of FFC connectors, and discloses a fast crimping FFC connector, which comprises an FFC connector main body formed by hinging an insulating shell and an insulating gland through two groups of coaxially arranged rotating shafts, the two groups of rotating shafts are coaxially provided with anti-retreat rollers and ratchet wheels, and the anti-retreat rollers and the ratchet wheels are rigidly connected to synchronously rotate; a locking piece is arranged at the rear part of the insulating shell; the locking piece comprises two groups of lock hooks and two groups of springs; the front end of the lock hook is matched with the ratchet wheel tooth shape of the ratchet wheel, and the rear end of the lock hook is elastically connected with the insulating shell through a spring; the lock hook is driven by pretightening force of the spring in a normal state, so that the front end is embedded into a tooth-shaped gap of the ratchet wheel; according to the FFC connector, through the linkage design of the insulating gland and the anti-withdrawing roller, the closing of the insulating gland and one-way locking of the ratchet wheel can be automatically triggered only by inserting the FFC, the two sides of the gland do not need to be pushed by two hands, the operation steps are reduced, and the FFC connector is particularly suitable for operation in a narrow space.

Description

Technical Field

[0001] The invention relates to the technical field of FFC connectors, in particular to a quick crimping FFC connector. Background Art

[0002] FFC connector is an interconnect device designed specifically for flexible flat cables (FFC) and is widely used in consumer electronics, automotive electronics, medical equipment, industrial control and other fields.

[0003] During the crimping process, the FFC cable needs to be inserted into the FFC connector, the pressure cover is buckled down, and both sides of the pressure cover need to be pushed with both hands to lock it. The operation steps are cumbersome. Since the FFC cable itself is small, the application scenario is compact, and it has a certain toughness, the FFC cable is prone to tilt or detachment during the process of pushing the pressure cover, resulting in poor connection effect and affecting production efficiency. Summary of the invention

[0004] The object of the present invention is to provide a quick crimping FFC connector, aiming to solve the problems in the prior art.

[0005] The present invention is implemented in this way: a quick crimping FFC connector, comprising: The FFC connector body is composed of an insulating shell and an insulating gland hinged by two sets of coaxially arranged rotating shafts, and anti-retraction rollers and ratchet wheels are coaxially installed on the two sets of rotating shafts, and the anti-retraction rollers and ratchet wheels are rigidly connected to rotate synchronously; The rear part of the insulating housing is provided with a locking member, which includes two sets of locking hooks and two sets of springs; the front end of the locking hook is provided with a ratchet tooth profile matching the ratchet, and the rear end of the locking hook is elastically connected to the insulating housing through a spring; the locking hook is driven by the spring preload force under normal conditions, so that the front end is embedded in the ratchet tooth profile gap; The FFC cable has a conductive plug at its end, and the FFC cable is inserted between the insulating housing and the insulating gland through the conductive plug; During insertion, the conductive plug is rolled by the anti-retraction roller and pushes the insulating gland to close around the rotating shaft. The locking teeth of the locking hook are gradually inserted into the tooth gap as the ratchet rotates, forming a one-way lock to prevent the anti-retraction roller from reversing and the FFC cable from exiting.

[0006] Preferably, limiting spring pieces are symmetrically arranged on both sides of the interior of the insulating shell. The limiting spring pieces are V-shaped beryllium copper alloy elastic pieces, and their ends extend toward the socket to form a guiding slope. The guiding slope contacts the side of the conductive plug to correct the insertion offset of the FFC cable.

[0007] Preferably, the limiting spring piece is provided with a hook above the guiding inclined surface, and the anti-retraction roller is provided with a slot corresponding to the hook on one side close to the limiting spring piece.

[0008] Preferably, the conductive plug is a forked metal terminal with a hemispherical protrusion on its surface, the distance between the two arms of the forked metal terminal matches the width of the terminal in the insulating housing, and the protrusion of the conductive plug abuts against the contact surface of the terminal.

[0009] Preferably, an upper spring sheet is provided on the inner side of the insulating gland, and the upper spring sheet is an arc-shaped stainless steel sheet, and its curvature matches the top contour of the terminal block; When the insulating gland is closed, the upper spring sheet presses down the protrusion of the conducting plug, so that it forms double-sided contact with the wiring terminal.

[0010] Preferably, the surface of the anti-retraction roller is provided with a diamond knurling pattern, and the depth of the knurling pattern is 0.1mm-0.3mm.

[0011] Preferably, the locking member further comprises a pressing portion, and the ends of the two sets of locking hooks penetrate the rear wall of the insulating housing and are fixedly connected to the two ends of the pressing portion; When the pressing portion is pressed, the lock hook overcomes the spring preload force and disengages from the ratchet, thereby releasing the one-way locking.

[0012] The invention discloses a quick crimping FFC connector, which has the following beneficial effects: 1. The FFC connector uses the linkage design of the insulating gland and the anti-retraction roller. Only the FFC cable needs to be inserted to automatically trigger the closing of the insulating gland and the one-way locking of the ratchet. There is no need to push both sides of the gland with both hands, which reduces the operation steps and is especially suitable for operations in narrow spaces. 2. When the FFC connector is inserted into the FFC cable and tilted, the insulating cover cannot be closed, effectively avoiding poor contact caused by the tilt of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Schematic diagram of a quick crimping FFC connector provided by an embodiment of the present invention; Figure 2 1 is a bottom view schematic diagram of a quick crimping FFC connector provided by an embodiment of the present invention; Figure 3 It is a schematic internal view of a quick crimping FFC connector provided by an embodiment of the present invention; Figure 4 A quick crimping FFC connector provided by an embodiment of the present invention Figure 3 A local enlarged structural diagram of the part; Figure 5 It is an exploded schematic diagram of a quick crimping FFC connector provided by an embodiment of the present invention.

[0014] Marking Description: 1. FFC connector body; 2. FFC cable; 11. Insulation housing; 12. Insulation gland; 13. Wiring terminal; 14. Upper spring; 15. Anti-retraction roller; 16. Limiting spring; 17. Locking piece; 151, rotating shaft; 152, ratchet; 153, bayonet; 161. guide slope; 162. hook; 171. spring; 172. pressing portion; 173. locking hook; 21. Connect the plug. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0016] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0017] The implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0018] In this embodiment: Reference Figure 1 - Figure 4 As shown, a preferred embodiment of the present invention is provided.

[0019] The fast crimping FFC connector of this embodiment includes: The FFC connector body 1 is composed of an insulating housing 11 and an insulating gland 12 which are hinged by two sets of coaxially arranged rotating shafts 151, and an anti-retraction roller 15 and a ratchet 152 are coaxially installed on the two sets of rotating shafts 151, and the anti-retraction roller 15 is rigidly connected with the ratchet 152 to rotate synchronously; The rear part of the insulating housing 11 is provided with a locking member 17, and the locking member 17 includes two groups of locking hooks 173 and two groups of springs 171; the front end of the locking hook 173 is provided with a ratchet tooth profile matching the ratchet 152, and the rear end of the locking hook 173 is elastically connected to the insulating housing 11 through the spring 171; the locking hook 173 is driven by the pre-tightening force of the spring 171 under normal conditions, so that the front end is embedded in the tooth gap of the ratchet 152; The FFC cable 2 has a conductive plug 21 at its end, and the FFC cable 2 is inserted between the insulating housing 11 and the insulating gland 12 through the conductive plug 21; During insertion, the conductive insert 21 will contact the anti-backward roller 15 and be rolled during the advancement process. During this process, the rotating shaft 151 of the anti-backward roller 15 will be rotated together, so that the insulating pressure cover 12 connected by the rotating shaft 151 will also be pushed to close together, and the locking teeth of the locking hook 173 will be gradually inserted into the tooth gap as the ratchet 152 rotates, forming a one-way lock to prevent the anti-backward roller 15 from reversing and the FFC cable 2 from withdrawing.

[0020] Among them, an upper spring sheet 14 is provided on the inner side of the insulating cover 12. The upper spring sheet 14 is an arc-shaped stainless steel sheet, and its curvature matches the top contour of the terminal 13. When the insulating cover 12 is closed, the upper spring sheet 14 presses the protrusion of the conductive plug 21 downward, so that it forms a double-sided contact with the terminal 13, thereby improving the connection effect.

[0021] It is worth noting that in the attached Figure 5 In the figure, the limiting spring pieces 16 are symmetrically arranged on both sides of the interior of the insulating shell 11. The limiting spring pieces 16 are V-shaped beryllium copper alloy elastic pieces, and their ends extend toward the socket direction to form a guiding slope 161. The guiding slope 161 contacts the side of the conductive plug 21 to correct the insertion deviation of the FFC cable 2.

[0022] The limiting spring piece 16 is provided with a hook 162 above the guiding inclined surface 161, and a bayonet 153 corresponding to the hook 162 is provided on the side of the anti-retraction roller 15 close to the limiting spring piece 16. When the wire is not inserted, the limiting spring piece 16 is not subjected to the extrusion force, and its hook 162 will open outward along with the guiding inclined surface 161, and then buckle into the bayonet 153 on the surface of the anti-retraction roller 15, so as to prevent the anti-retraction rollers 15 on both sides of the insulating housing 11 from rotating. The conducting plug 21 is a forked metal terminal, and a hemispherical convex point is provided on its surface. The distance between the two arms of the forked metal terminal matches the width of the wiring terminal 13 in the insulating housing 11, and the convex point of the conducting plug 21 abuts against the contact surface of the wiring terminal 13; Anti-misinsertion mechanism of the limiting spring piece 16 and the anti-retraction roller 15: When the FFC cable 2 is not inserted, the hook 162 of the limiting spring sheet 16 is driven to open outward by its own elastic restoring force due to the absence of external squeezing force, and is embedded in the slot 153 on the side of the anti-retraction roller 15, forming an axial mechanical lock to prevent the anti-retraction roller 15 from idling; Linked unlocking in normal insertion state: When the conductive insert 21 is inserted in the forward alignment, the edges on both sides of the insert synchronously contact the guide slopes 161 of the limiting spring sheet 16. Under the thrust of the insertion, the limiting spring sheets 16 on both sides are compressed and retracted, driving the hook 162 to disengage from the bayonet 153 of the anti-retraction roller 15, thereby releasing the axial locking. At this time, the conductive plug 21 will contact the anti-retraction roller 15 and be rolled during the advancement process. During this process, the rotating shaft 151 of the anti-retraction roller 15 will be rotated together, so that the insulating pressure cover 12 connected by the rotating shaft 151 will also be pushed to close together, and the ratchet 152 and the locking hook 173 will engage step by step to complete the one-way locking.

[0023] Error-proofing for tilted insertion: If the conductive plug 21 is inserted asymmetrically and tilted, only one side edge contacts the guiding inclined surface 161 and compresses the limiting spring sheet 16 on that side, causing the hook 162 on one side to disengage from the bayonet 153, while the hook 162 on the other side remains locked; At this time, due to the asymmetric rotational freedom of the anti-retraction rollers 15 on both sides, the conductive plug 21 is subjected to reverse torque, and the insertion resistance increases sharply, which forcibly prevents incomplete insertion caused by misoperation and avoids the risk of poor contact.

[0024] The surface of the anti-retraction roller 15 is provided with a diamond knurling pattern with a depth of 0.1mm-0.3mm, which increases the resistance between the anti-retraction roller 15 and the surface of the conductive plug 21 when the axis is locked, and prevents the conductive plug 21 from falling off from the FFC connector body 1.

[0025] It is worth noting that the locking member 17 also includes a pressing portion 172, and the ends of the two sets of locking hooks 173 pass through the rear wall of the insulating shell 11 and are fixedly connected to the two ends of the pressing portion 172. When the pressing portion 172 is pressed, the locking hooks 173 overcome the preload force of the spring 171 and disengage from the ratchet 152, thereby releasing the one-way locking.

[0026] This solution uses the ratchet 152 to cooperate with the lock hook 173 for one-way self-locking and the limit spring piece 16 to prevent mis-insertion, so as to achieve the function of locking when inserted with one hand and forced blocking when inserted at an angle, and can be widely used in operations in narrow spaces.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A quick crimping FFC connector, characterized in that: include: The FFC connector body (1) is composed of an insulating housing (11) and an insulating gland (12) which are hingedly connected via two sets of coaxially arranged rotating shafts (151), and the two sets of rotating shafts (151) are coaxially mounted with an anti-retraction roller (15) and a ratchet (152), and the anti-retraction roller (15) and the ratchet (152) are rigidly connected to rotate synchronously; A locking member (17) is provided at the rear of the insulating housing (11), and the locking member (17) comprises two groups of locking hooks (173) and two groups of springs (171); the front end of the locking hook (173) is provided with a ratchet tooth profile that matches the ratchet (152), and the rear end of the locking hook (173) is elastically connected to the insulating housing (11) via the spring (171); the locking hook (173) is driven by the pre-tightening force of the spring (171) in a normal state, so that the front end is embedded in the tooth profile gap of the ratchet (152); An FFC cable (2) having a conductive plug (21) provided at an end thereof, wherein the FFC cable (2) is inserted between the insulating housing (11) and the insulating gland (12) via the conductive plug (21); During insertion, the conductive plug (21) is rolled by the anti-retraction roller (15) and pushes the insulating gland (12) to close around the rotating shaft (151), and the locking teeth of the locking hook (173) are gradually locked into the tooth gap as the ratchet (152) rotates, forming a one-way lock to prevent the anti-retraction roller (15) from reversing and the FFC cable (2) from withdrawing.

2. A quick crimping FFC connector as claimed in claim 1, characterized in that: Limit spring pieces (16) are symmetrically arranged on both sides of the interior of the insulating housing (11); the limit spring pieces (16) are V-shaped beryllium copper alloy elastic pieces, the ends of which extend in the direction of the socket to form a guide slope (161); the guide slope (161) contacts the side of the conductive plug piece (21) and is used to correct the insertion deviation of the FFC cable (2).

3. A quick crimping FFC connector as claimed in claim 2, characterized in that: The limiting spring sheet (16) is provided with a hook (162) above the guiding inclined surface (161), and a snap-in opening (153) corresponding to the hook (162) is provided on a side of the anti-retraction roller (15) close to the limiting spring sheet (16).

4. A quick crimping FFC connector as claimed in claim 3, characterized in that: The conducting plug (21) is a forked metal terminal, a surface of which is provided with a hemispherical convex point, the distance between two arms of the forked metal terminal matches the width of the wiring terminal (13) in the insulating housing (11), and the convex point of the conducting plug (21) abuts against the contact surface of the wiring terminal (13).

5. A quick crimping FFC connector as claimed in claim 4, characterized in that: An upper spring sheet (14) is provided on the inner side of the insulating gland (12); the upper spring sheet (14) is an arc-shaped stainless steel sheet, the arc of which matches the top contour of the connecting terminal (13); When the insulating gland (12) is closed, the upper spring sheet (14) presses the protrusion of the conductive plug (21) downward, so that it forms double-sided contact with the connection terminal (13).

6. A quick crimping FFC connector as claimed in claim 1, characterized in that: The anti-retraction roller (15) has a diamond knurling pattern on its surface, and the depth of the knurling pattern is 0.1 mm-0.3 mm.

7. A quick crimping FFC connector as claimed in claim 1, characterized in that: The locking member (17) further comprises a pressing portion (172), and the ends of the two sets of locking hooks (173) penetrate the rear wall of the insulating housing (11) and are fixedly connected to the two ends of the pressing portion (172); When the pressing portion (172) is pressed, the lock hook (173) overcomes the pre-tightening force of the spring (171) and disengages from the ratchet (152), thereby releasing the one-way locking.

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