Wire harness terminal tension tester clamp

Abstract

The utility model relates to the field of automobile wire harnesses, in particular to a wire harness terminal tension tester clamp, which comprises a case, a detector fixing structure mounted at the upper end of the case, and a clamping mechanism. When the device works, one end of the wire harness is placed between the convex rack and the concave rack, then the two-way screw is rotated to enable the two traction frames to move in the opposite directions, and therefore the concave rack and the convex rack tighten the wire harness, and the wire harness is clamped through the concave rack and the convex rack through fillet machining and elasticity of rubber. According to the wiring harness clamping device, the wiring harness can be prevented from being seriously damaged after being clamped, in the process that a concave rack and a convex rack move to clamp the wiring harness, through elasticity of a second spring, a clamping block can be pressed into the convex rack after a convex plate abuts against the clamping block, and when a round hole of the convex plate is located over the clamping block, the second spring can drive the clamping block to pop out; therefore, the convex rack and the concave rack are prevented from being loosened due to slight displacement during detection.

Description

Technical Field

[0001] The utility model relates to the field of automobile wiring harnesses, in particular to a clamp for a wiring harness terminal tension testing machine. Background Art

[0002] The automotive wiring harness is the main network of the automotive circuit. Without the wiring harness, there would be no automotive circuit. The wiring harness refers to the components that are bundled with the wiring harness to form a circuit connection after the contact terminals made of copper are crimped with wires and cables, and then plastic-pressed with insulators or metal shells.

[0003] After searching the patent document with the publication number CN216484346U, the patent document discloses "a wire harness terminal tension tester fixture, which places the wire harness to be measured in two sets of clamping blocks, rotates the handle to drive the external thread to rotate, and drives the external thread to rotate in the internal thread through the handle, and moves the two sets of clamping blocks in opposite directions through the special-shaped threads of the external thread and the internal thread, thereby completing the tightening action of the wire harness.";

[0004] Although the above device uses the principle of the threaded structure to allow the two sets of supporting blocks to move towards each other after turning the handle to tighten the wire harness, if the pulling force is strong, the two clamping blocks are easily slightly stretched apart under the action of the strong pulling force, which may cause the wire harness to detach from the device. Utility Model Content

[0005] The purpose of the utility model is to provide a wire harness terminal tension testing machine fixture in order to solve the above problems.

[0006] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0007] A wire harness terminal tension tester fixture comprises a chassis, a detector fixing structure is installed on the upper end of the chassis, and a clamping mechanism;

[0008] The clamping mechanism includes a one-way screw, which is rotatably connected to the inside of the chassis, a motor is installed at the input end of the one-way screw, a sliding frame is threadedly connected to the outer periphery of the one-way screw, and the sliding frame is slidably connected to the chassis, a two-way screw is rotatably connected to the inside of one side of the sliding frame, a guide rod is fixed to the inside of the other side of the sliding frame, and two traction frames are slidably connected to the guide rod, one of the traction frames is fixed with a convex rack at one end corresponding to the other traction frame, and the other traction frame is fixed with a concave rack at one end corresponding to the convex rack, a groove is provided at the upper end of the convex rack, a convex plate is fixed at the rear end of the concave rack, a second spring is fixed to the two circular holes at the upper end of the convex rack, a clamping block is fixed to the upper end of the second spring, and the convex plate is provided with circular holes corresponding to the two clamping blocks.

[0009] Preferably, a turning handle is provided at the front end of the bidirectional screw, and rubber strips are provided on both sides of the corresponding ends of the convex rack and the concave rack.

[0010] Preferably, the convex teeth of the convex rack and the concave tooth grooves of the concave rack are both processed with rounded corners, and rubber layers are provided on the walls of the convex teeth on the convex rack and the concave tooth grooves of the concave rack.

[0011] Preferably, the upper end of the clamping block and the lower edge of the rear end of the convex plate are both processed with rounded corners.

[0012] Preferably, the detector fixing structure includes two L-shaped frames fixed to the upper end of the chassis. A plurality of first springs are provided between the two L-shaped frames, and the lower ends of the first springs are fixed to the chassis. A placement plate is fixed to the upper ends of the first springs. Two fixing rings are fixed to the opposite ends of the two L-shaped frames. A turning frame is rotatably connected between the fixing rings on the two L-shaped frames. Fixing rods are fixed to the corresponding ends of the two turning frames. Two loop buckles are sleeved around the periphery of one of the fixing rods.

[0013] Preferably, limiting rings are fixed on both sides of the two loop buckles around the periphery of the fixing rod, and the diameter of the limiting ring is greater than the diameter of the fixing rod itself.

[0014] The beneficial effects compared with the prior art are as follows:

[0015] During the operation of the device, one end of the wire harness is placed between the convex rack and the concave rack. Subsequently, through the threaded connection of the two traction frames with the bidirectional screw and the sliding connection of the two traction frames with the guide rod, when the bidirectional screw is rotated, the two traction frames can move in opposite directions, so that the concave rack and the convex rack clamp the wire harness. Through the rounded corner processing of both the concave rack and the convex rack and the elasticity of the rubber, the wire harness can be prevented from being severely damaged after being clamped. During the process of the concave rack and the convex rack moving to clamp the wire harness, due to the elasticity of the second spring, when the convex plate touches the clamping block, the clamping block will be pressed into the convex rack. When the round hole of the convex plate is directly above the clamping block, the second spring will drive the clamping block to pop out, thereby clamping the convex rack and the concave rack to prevent them from slightly displacing and unclamping during detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic structural diagram of a fixture for a wire harness terminal tensile testing machine according to the present invention;

[0018] Figure 2 It is a schematic structural diagram of a fixing structure of a fixture detector for a wire harness terminal tensile testing machine according to the present utility model;

[0019] Figure 3 It is a schematic structural diagram of a clamping mechanism of a fixture for a wire harness terminal tensile testing machine according to the present utility model;

[0020] Figure 4 It is a main sectional view of a clamping mechanism of a fixture for a wire harness terminal tensile testing machine according to the present utility model;

[0021] Figure 5 It is a schematic structural diagram of two traction frames of a fixture for a wire harness terminal tensile testing machine according to the present utility model;

[0022] Figure 6 It is a schematic structural diagram of a clamping block of a fixture for a wire harness terminal tensile testing machine according to the present utility model.

[0023] Explanation of the reference numerals is as follows:

[0024] 1, chassis; 11, chassis frame; 12, fixing bolts; 2, L-shaped frame; 21, first spring; 22, placing plate; 23, fixing ring; 24, flipping frame; 25, fixing rod; 26, loop; 3, one-way screw; 31, motor; 32, sliding frame; 33, two-way screw; 34, guide rod; 35, traction frame; 36, convex rack; 37, concave rack; 38, groove; 39, convex plate; 310, second spring; 311, clamping block. Detailed implementation manners

[0025] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model 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 thus should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0026] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0027] The present utility model will be further described below with reference to the accompanying drawings:

[0028] As Figures 1-6 shown, a fixture for a wire harness terminal tensile testing machine includes a chassis 1, a detector fixing structure is installed at the upper end of the chassis 1, and a clamping mechanism is further included.

[0029] Bottom frames 11 are fixed to both the front and rear ends of the chassis 1, and fixing bolts 12 are provided at both ends of the bottom frames 11; the device can be fixed to a suitable position through the fixing bolts 12.

[0030] The detector fixing structure includes two L-shaped frames 2, the two L-shaped frames 2 are fixed to the upper end of the chassis 1, a plurality of first springs 21 are arranged between the two L-shaped frames 2, and the lower end of the first spring 21 is fixed to the chassis 1, the upper end of the first spring 21 is fixed with a placement plate 22, two fixing rings 23 are fixed to the reverse ends of the two L-shaped frames 2, a turning frame 24 is rotatably connected between the fixing rings 23 on the two L-shaped frames 2, fixing rods 25 are fixed to the corresponding ends of the two turning frames 24, two loop buckles 26 are sleeved around the periphery of one of the fixing rods 25, limiting rings are fixed on both sides of the two loop buckles 26 on the periphery of the fixing rod 25, and the diameter of the limiting ring is greater than the diameter of the fixing rod 25 itself; before the device operates, first open the two loop buckles 26 and turn the two turning frames 24, then place the detection instrument on the upper end of the placement plate 22, make one end of the detection instrument abut against one end of the L-shaped frame 2, then turn the two turning frames 24 to reset them, and finally fix the two turning frames 24 through the two loop buckles 26, so that the two turning frames 24 fix the detection instrument.

[0031] The clamping mechanism includes a unidirectional screw 3, which is rotatably connected inside the chassis 1. A motor 31 is installed at the input end of the unidirectional screw 3. A sliding frame 32 is threadedly connected to the periphery of the unidirectional screw 3, and the sliding frame 32 is slidably connected to the chassis 1. Inside one side of the sliding frame 32, a bidirectional screw 33 is rotatably connected. A turning handle is provided at the front end of the bidirectional screw 33. A guide rod 34 is fixed inside the other side of the sliding frame 32. Two traction frames 35 are threadedly connected to the periphery of the bidirectional screw 33, and both of the two traction frames 35 are slidably connected to the guide rod 34. A convex rack 36 is fixed at one end of one traction frame 35 corresponding to the other traction frame 35. A concave rack 37 is fixed at one end of the other traction frame 35 corresponding to the convex rack 36. Rubber strips are provided on both sides of the corresponding ends of the convex rack 36 and the concave rack 37. A groove 38 is opened at the upper end of the convex rack 36. A convex plate 39 is fixed at the rear end of the concave rack 37. The convex teeth of the convex rack 36 and the concave tooth grooves of the concave rack 37 are all processed with rounded corners, and rubber layers are provided on the walls of the convex teeth of the convex rack 36 and the concave tooth grooves of the concave rack 37. Second springs 310 are fixed inside the two round holes at the upper end of the convex rack 36. A clamping block 311 is fixed at the upper ends of the second springs 310, and round holes are provided in the convex plate 39 corresponding to the two clamping blocks 311. The upper ends of the clamping blocks 311 and the lower edges of the rear end of the convex plate 39 are all processed with rounded corners; during the operation of the device, one end of the wire harness is placed between the convex rack 36 and the concave rack 37. Subsequently, through the threaded connection between the two traction frames 35 and the bidirectional screw 33 and the sliding connection between the two traction frames 35 and the guide rod 34, when the bidirectional screw 33 is rotated, the two traction frames 35 can move in opposite directions, so that the concave rack 37 and the convex rack 36 clamp the wire harness. Due to the rounded corners of both the concave rack 37 and the convex rack 36 and the elasticity of the rubber, the wire harness can be prevented from being severely damaged after being clamped. During the process of the concave rack 37 and the convex rack 36 moving to clamp the wire harness, due to the elasticity of the second springs 310, when the convex plate 39 abuts against the clamping block 311, the clamping block 311 will be pressed into the convex rack 36. When the round hole of the convex plate 39 is directly above the clamping block 311, the second spring 310 will drive the clamping block 311 to pop out, thereby clamping the convex rack 36 and the concave rack 37 and preventing them from having slight displacement and becoming unclamped during detection.

[0032] Working principle: before the device is operated, first open the two ring buckles 26 and flip the two flip frames 24, then place the detection instrument on the upper end of the storage plate 22, so that one end of the detection instrument is against one end of the L-shaped frame 2, then flip the two flip frames 24 to reset it, and finally fix the two flip frames 24 through the two ring buckles 26, so that the two flip frames 24 can fix the detection instrument. After the detection instrument is fixed, place one end of the wire harness between the convex rack 36 and the concave rack 37, through the threaded connection of the two traction frames 35 and the bidirectional screw 33 and the sliding connection of the two traction frames 35 and the guide rod 34, when the bidirectional screw 33 is rotated, the two traction frames 35 can move in relative directions, so that the concave rack 37 and the convex rack 36 tighten the wire harness, and the concave rack 37 and the convex rack 36 are both rounded to The elasticity of the rubber can prevent the wiring harness from being seriously damaged after being tightened. In the process of the concave rack 37 and the convex rack 36 moving to tighten the wiring harness, through the elasticity of the second spring 310, when the convex plate 39 hits the block 311, the block 311 will be pressed into the convex rack 36. When the round hole of the convex plate 39 is located directly above the block 311, the second spring 310 will drive the block 311 to pop out, thereby clamping the convex rack 36 and the concave rack 37 to prevent it from being slightly displaced and unclamped during detection. After clamping and fixing one end of the wiring harness, the other end of the wiring harness is fixed to the detection instrument, and then the motor 31 is started. Through the threaded connection between the one-way screw 3 and the sliding frame 32 and the sliding connection between the sliding frame 32 and the chassis 1, when the motor 31 is started, the sliding frame 32 can be moved, thereby performing a tension test on the wiring harness.

[0033] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A wire harness terminal tension tester fixture, comprising a chassis (1), wherein a detector fixing structure is installed at the upper end of the chassis (1), characterized in that: Also includes a clamping mechanism; The clamping mechanism comprises a one-way screw (3), the one-way screw (3) is rotatably connected to the inside of the chassis (1), a motor (31) is installed at the input end of the one-way screw (3), a sliding frame (32) is threadedly connected to the outer periphery of the one-way screw (3), and the sliding frame (32) is slidably connected to the chassis (1), a bidirectional screw (33) is rotatably connected to the inside of one side of the sliding frame (32), a guide rod (34) is fixed to the inside of the other side of the sliding frame (32), two traction frames (35) are threadedly connected to the outer periphery of the bidirectional screw (33), and the two traction frames (35) are both connected to the guide rod (3 4) a sliding connection, wherein a convex rack (36) is fixed to one end of one of the traction frames (35) corresponding to the other traction frame (35), and a concave rack (37) is fixed to one end of the other traction frame (35) corresponding to the convex rack (36), a groove (38) is provided at the upper end of the convex rack (36), a convex plate (39) is fixed at the rear end of the concave rack (37), a second spring (310) is fixed inside the two circular holes at the upper end of the convex rack (36), a clamping block (311) is fixed to the upper end of the second spring (310), and the convex plate (39) is provided with circular holes corresponding to the two clamping blocks (311).

2. A wire harness terminal tension testing machine fixture according to claim 1, characterized in that: The front end of the bidirectional screw (33) is provided with a turning handle, and both sides of the corresponding ends of the convex rack (36) and the concave rack (37) are provided with rubber strips.

3. A wire harness terminal tension testing machine fixture according to claim 1, characterized in that: The convex teeth of the convex rack (36) and the concave tooth grooves of the concave rack (37) are both rounded, and the walls of the convex teeth on the convex rack (36) and the concave tooth grooves of the concave rack (37) are both provided with a rubber layer.

4. The wire harness terminal tension testing machine fixture according to claim 1, characterized in that: The upper end of the clamping block (311) and the lower edge of the rear end of the convex plate (39) are both rounded.

5. The wire harness terminal tension testing machine fixture according to claim 1, characterized in that: The detector fixing structure comprises two L-shaped frames (2), the two L-shaped frames (2) are fixed to the upper end of the chassis (1), a plurality of first springs (21) are arranged between the two L-shaped frames (2), the lower ends of the first springs (21) are fixed to the chassis (1), a storage plate (22) is fixed to the upper ends of the first springs (21), two fixing rings (23) are fixed to the opposite ends of the two L-shaped frames (2), the middle of the fixing rings (23) on the two L-shaped frames (2) are rotatably connected to a flip frame (24), the corresponding ends of the two flip frames (24) are fixed with fixing rods (25), and the outer periphery of one of the fixing rods (25) is provided with two ring buckles (26).

6. A wire harness terminal tension testing machine fixture according to claim 5, characterized in that: Limiting rings are fixed on the periphery of the fixing rod (25) and on both sides of the two ring buckles (26), and the diameter of the limiting rings is greater than the diameter of the fixing rod (25) itself.

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