Wire harness terminal fixing tool for high and low temperature test box

Abstract

The utility model discloses a high and low temperature test box wire harness terminal fixing tool comprising a pedestal, the top of the pedestal is provided with a support frame, the top of the support frame is provided with an abutting structure, and the area of the top of the pedestal in the support frame is connected with a mounting block. The top of the mounting block is provided with a plurality of support columns used for cooperating with the abutting structure to fix the terminal. According to the high and low temperature test box wire harness terminal fixing tool, through linkage cooperation of the trigger structure and the plugging structure, during injection molding operation, the trigger structure can drive the plugging structure to be separated from the injection molding opening, and normal operation of the injection molding process is ensured; when the injection molding operation is stopped, the triggering structure is reset, and meanwhile, the blocking structure can be rapidly reset to shield the injection molding opening; due to the design, leakage of the injection molding opening during shutdown is effectively prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to terminal equipment technical field, concretely is a high low temperature test box wire harness terminal fixed frock. BACKGROUND

[0002] The terminal is an important element for circuit connection, and is widely used in electronic, electrical, communication and other fields. In the production and manufacturing process of the terminal, in order to ensure the performance stability under different environmental conditions, it needs to be detected under high temperature and low temperature environment. This detection process usually needs to put the terminal into the high low temperature test box to carry out simulation test.

[0003] However, when high low temperature detection is carried out, the fixation of the terminal is a key problem. Because the models and sizes of the terminals are different, the existing fixed frock can only fix the terminals of single size model, which makes the universality and practicability of the frock lower. When the terminals of different sizes are replaced each time, the corresponding frock needs to be replaced, which not only increases the production cost, but also reduces the detection efficiency.

[0004] In addition, the terminal material will expand and contract under high temperature and low temperature environment, and its physical properties will also change, for example, it may become soft under high temperature and brittle under low temperature. The existing fixed frock mostly adopts fixed clamping force. This fixed and tight clamping mode is easy to cause damage to the terminal when the temperature changes, which affects the performance and quality of the terminal.

[0005] Therefore, the existing technology has the following deficiencies: 1. The universality of the fixed frock is poor, which cannot adapt to terminals of different sizes, resulting in frequent replacement, increased cost and operation complexity; 2. The clamping force of the fixed frock is fixed, which cannot be adjusted according to temperature change, and is easy to cause damage to the terminal under high low temperature environment; 3. The existing fixed mode is complicated to operate, which wastes detection time and reduces detection efficiency.

[0006] In order to solve the above problems, an elastic clamping frock that can adapt to terminals of different sizes is needed. This frock should be able to automatically adjust the clamping force when the temperature changes, avoid damage to the terminal, and be easy to operate, save detection time and improve detection efficiency. UTILITY MODEL CONTENTS

[0007] The utility model technical scheme provides a high low temperature test box wire harness terminal fixed frock which is significantly different from the prior art solution to solve the problems raised in the above background technology.

[0008] In order to achieve the above object, the utility model provides the following technical scheme: a high and low temperature test box wire harness terminal fixed tool, including base, the base top is equipped with support frame, and the support frame top is equipped with abutment structure, and the base top is connected with the mounting block in the support frame inner area, the mounting block top is equipped with a plurality of support column for abutting structure cooperation fixed terminal, and the mounting block is equipped with the auxiliary limiting structure for the terminal adsorption stable in intercommunication support column.

[0009] Preferably, the abutment structure includes adjusting screw rod, horizontal plate, limiting rod, pressure spring, lamination, vertical rod, memory alloy spring, the support frame top is equipped with adjusting screw rod in screw connection, and the adjusting screw rod lower extreme rotationally connected with horizontal plate, and the horizontal plate top is connected with the limiting rod which is connected in the support frame through sliding, the horizontal plate bottom is connected with a plurality of pressure springs at equal intervals, and the pressure spring lower extreme is connected with the lamination for and terminal contact, the lamination top is connected with the vertical rod which is connected through the horizontal plate top, and the vertical rod upper extreme and the horizontal plate top are connected with memory alloy spring.

[0010] Preferably, the lamination bottom is set to soft material, the vertical rod is set to'T'type structure, and the vertical rod and horizontal plate are slidingly connected.

[0011] Preferably, the support column is at equal intervals respectively on the mounting block top, and the support column upper end is set to suction disc structure, and the support column is set to hollow structure which is communicated with the auxiliary limiting structure.

[0012] Preferably, the auxiliary limiting structure includes air slot, piston plate, first clamping block, first return spring, first clamping groove, recess, second clamping block, second clamping groove, second return spring, limiting baffle, the air slot is set up in the mounting block, and the air slot is connected with the piston plate in, and the piston plate bottom is connected with the first clamping block and the first return spring respectively, the first clamping block is located in the first clamping groove, and the first clamping groove is set up in the mounting block and is communicated with the air slot, the recess is set up in the outer wall of the first clamping block in the first clamping groove inner area, and the second clamping block one end is connected in the recess, and the second clamping block other end is located in the second clamping groove, the second clamping groove is set up in the first clamping groove, and the second clamping groove is connected with the second clamping block between the second return spring, the first clamping block and the second clamping block end are all penetrated the outer wall of the mounting block, and the first clamping block is located in the outer end of the mounting block and is connected with the limiting baffle, and the limiting baffle is parallel with the support column upper end.

[0013] Preferably, the air slot and piston plate are all set to comb-like structure, and the air slot and piston plate are slidingly connected, the second clamping block is located in the end area of the recess and is set to inclined plane near the piston plate side, and the second clamping block and the recess are snapingly connected.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This high and low temperature test chamber wiring harness terminal fixing fixture, through the linkage of the triggering structure and the sealing structure, allows the triggering structure to drive the sealing structure away from the injection port during injection molding, ensuring the normal progress of the injection molding process; while when the injection molding operation stops, the triggering structure resets and the sealing structure can quickly reset to block the injection port; this design effectively prevents leakage from the injection port when the machine stops, avoids material waste and pollution of the work area, and improves the cleanliness and safety of the production environment.

[0015] During prolonged downtime, the material inside the injection port can easily cool and solidify, leading to blockage and affecting subsequent production. This patent addresses this by using a temperature control structure with a heat-conducting rod for temperature transfer. When the internal temperature of the injection head decreases, the shape memory alloy spring deforms and contracts due to the temperature change, causing the insert plate to move outward within the housing. This allows the heat carrier (such as water or gas) in the input pipe to smoothly pass through the housing and enter the heat-conducting pipe to heat the injection head. This automatic temperature control function effectively prevents the material inside the injection port from cooling and solidifying, avoiding blockage and ensuring the continuity and stability of production.

[0016] Once the temperature inside the injection head reaches the appropriate level, the shape memory alloy spring recovers its original shape, causing the insert plate to seal the housing and prevent the heating medium from continuing to flow and provide heat. This intelligent temperature control mechanism can automatically adjust the heating supply according to the actual temperature requirements of the injection head, avoiding unnecessary energy waste and achieving the goal of energy conservation and environmental protection. At the same time, by precisely controlling the heating process, it reduces changes in material properties caused by excessively high or low temperatures, further improving product quality.

[0017] The entire temperature control and sealing process of this patent is automated and requires no manual intervention. The linkage between the triggering structure and the sealing structure, as well as the intelligent adjustment of the temperature control structure, enable the injection molding machine to automatically seal and unseal the injection port and adjust the temperature during shutdown and startup. This automated design not only improves production efficiency but also reduces the labor intensity of operators and the possibility of human error. Attached Figure Description

[0018] Figure 1 This is a frontal cross-sectional view of the bonding plate of this utility model in the state away from the base;

[0019] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0020] Figure 3 This is a schematic diagram of the groove structure of this utility model;

[0021] Figure 4This is a top view of the limiting baffle structure of this utility model;

[0022] Figure 5 This is a front view structural diagram of the bonding plate of this utility model in the state away from the base;

[0023] Figure 6 This is a frontal cross-sectional view of the bonding plate of this utility model when it is close to the base.

[0024] Figure 7 This is a front view of the bonding plate of this utility model when it is away from the base.

[0025] In the diagram: 1. Base; 2. Support frame; 3. Abutment structure; 301. Adjusting screw; 302. Horizontal plate; 303. Limiting rod; 304. Pressure spring; 305. Adhesive plate; 306. Vertical rod; 307. Memory alloy spring; 4. Mounting block; 5. Support column; 6. Auxiliary limiting structure; 601. Hollow slot; 602. Piston plate; 603. First locking block; 604. First return spring; 605. First slot; 606. Groove; 607. Second locking block; 608. Second slot; 609. Second return spring; 610. Limiting baffle. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-7 This utility model provides a technical solution: a high and low temperature test chamber wire harness terminal fixing fixture, including a base 1, a support frame 2, an abutment structure 3, an adjusting screw 301, a horizontal plate 302, a limiting rod 303, a pressure spring 304, a bonding plate 305, a vertical rod 306, a shape memory alloy spring 307, a mounting block 4, a support column 5, an auxiliary limiting structure 6, a slot 601, a piston plate 602, a first locking block 603, a first return spring 604, a first locking groove 605, a groove 606, a second locking block 607, a second locking groove 608, a second return spring 609, and a limiting baffle 610. The support frame 2 is installed on the top of the base 1, and the abutment structure 3 is provided on the top of the support frame 2. The mounting block 4 is connected to the area inside the support frame 2 on the top of the base 1. The mounting block 4 is provided with a plurality of support columns 5 for fixing the terminals in conjunction with the abutment structure 3, and the mounting block 4 is provided with an auxiliary limiting structure 6 that connects to the support columns 5 for adsorbing and stabilizing the terminals.

[0028] The abutment structure 3 includes an adjusting screw 301, a horizontal plate 302, a limiting rod 303, a pressure spring 304, a bonding plate 305, a vertical rod 306, and a shape memory alloy spring 307. The top of the support frame 2 is threadedly connected to the adjusting screw 301, and the lower end of the adjusting screw 301 is rotatably connected to the horizontal plate 302. The top of the horizontal plate 302 is connected to the limiting rod 303, which is slidably connected to the support frame 2. Several pressure springs 304 are evenly spaced at the bottom of the horizontal plate 302, and the lower end of the pressure springs 304 is connected to the bonding plate 305 for contacting the terminal. The top of the bonding plate 305 is connected to the vertical rod 306, which penetrates the top of the horizontal plate 302. The upper end of the vertical rod 306 is connected to the top of the horizontal plate 302, and the shape memory alloy spring 307 is connected between the upper end of the vertical rod 306 and the top of the horizontal plate 302.

[0029] The bottom of the bonding plate 305 is made of a soft material, the vertical rod 306 is a "T" shaped structure, and the vertical rod 306 and the horizontal plate 302 are slidably connected.

[0030] The support columns 5 are evenly spaced on the top of the mounting block 4, and the upper end of the support column 5 is set as a suction cup structure. The support column 5 is also set as a hollow structure that is connected to the auxiliary limiting structure 6.

[0031] The auxiliary limiting structure 6 includes a slot 601, a piston plate 602, a first locking block 603, a first return spring 604, a first locking groove 605, a recess 606, a second locking block 607, a second locking groove 608, a second return spring 609, and a limiting baffle 610. The mounting block 4 has a slot 601, and the piston plate 602 is connected to the slot 601. The bottom of the piston plate 602 is connected to the first locking block 603 and the first return spring 604. The first locking block 603 is located within the first locking groove 605, and the first locking groove 605 is located within the mounting block 4 and communicates with the slot 601. A groove 606 is formed on the outer wall of the area within the first slot 605. One end of the second block 607 is connected to the groove 606, and the other end of the second block 607 is located in the second slot 608. The second slot 608 is formed in the first slot 605, and a second reset spring 609 is connected between the second slot 608 and the second block 607. The ends of the first block 603 and the second block 607 both penetrate the outer wall of the mounting block 4. A limit baffle 610 is connected to the outer end of the first block 603 located on the mounting block 4, and the limit baffle 610 is parallel to the upper end of the support column 5.

[0032] Both the slot 601 and the piston plate 602 are configured as comb-shaped structures, and the slot 601 and the piston plate 602 are slidably connected. The second locking block 607 is located in the inner end area of ​​the groove 606 near the piston plate 602 and is configured as an inclined surface. The second locking block 607 and the groove 606 are engaged.

[0033] Working principle: According to Figure 1As shown, firstly, terminals of different models and sizes or of the same model and size to be tested are placed on the support column 5, with the ends of the terminals abutting against the limiting baffle 610 for positioning and restriction. Then, the first locking block 603 is pressed down, causing the limiting baffle 610 to disengage from the terminals, and the first locking block 603 moves downward into the first locking groove 605. The first return spring 604 is compressed, and at the same time, the downward movement of the first locking block 603 causes the piston plate 602 to move downward in the empty groove 601, so that the upper part of the empty groove 601 interacts with the support column 5. There is a negative pressure adsorption force on the terminal, which initially fixes and limits the terminal and avoids damage caused by excessive clamping. Then, the adjusting screw 301 is rotated downwards. With the cooperation of the limiting rod 303, the horizontal plate 302 and the bonding plate 305 are pushed down. The bonding plate 305 is attached to the end face of the terminal. The adjusting screw 301 is rotated downwards again, so that the pressure spring 304 between the horizontal plate 302 and the bonding plate 305 is compressed to a certain extent. The counter-thrust force of the pressure spring 304 acts on the terminal, and together with the support column 5, it plays a certain role in elastically clamping the terminal.

[0034] After fixing, the terminals are placed together in a high and low temperature test chamber for testing under high and low temperature conditions. Due to the thermal expansion and contraction of materials or the heat-softening and cold-brittleness of plastic materials, they cannot be clamped too tightly. When the temperature rises, the shape memory alloy spring 307 deforms and pushes the vertical rod 306 upward, which in turn moves the bonding plate 305 upward by a certain distance, thus making the clamping of the thermally expanded terminals slightly loose and avoiding excessive clamping. Conversely, when the temperature is low, the bonding plate 305 moves downward to prevent the bonding terminals from loosening. This is the working principle of the high and low temperature test chamber wire harness terminal fixing fixture.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high and low temperature test chamber wire harness terminal fixing fixture, comprising a base (1), characterized in that: The base (1) is equipped with a support frame (2) on top, and the support frame (2) is provided with an abutment structure (3) on top. The base (1) is connected to an installation block (4) in the area inside the support frame (2). The installation block (4) is provided with several support columns (5) on top for fixing the terminals in conjunction with the abutment structure (3). The installation block (4) is provided with an auxiliary limiting structure (6) that connects the support columns (5) for adsorbing and stabilizing the terminals.

2. The high and low temperature test chamber wire harness terminal fixing fixture according to claim 1, characterized in that: The abutment structure (3) includes an adjusting screw (301), a horizontal plate (302), a limiting rod (303), a pressure spring (304), a bonding plate (305), a vertical rod (306), and a memory alloy spring (307). The top of the support frame (2) is threaded with an adjusting screw (301), and the lower end of the adjusting screw (301) is rotatably connected to the horizontal plate (302). The top of the horizontal plate (302) is connected with a limiting rod (303) that slides through the support frame (2). The bottom of the horizontal plate (302) is connected with several pressure springs (304) at equal intervals. The lower end of the pressure springs (304) is connected with a bonding plate (305) for contacting the terminal. The top of the bonding plate (305) is connected with a vertical rod (306) that penetrates the top of the horizontal plate (302). The upper end of the vertical rod (306) is connected to the top of the horizontal plate (302) with a memory alloy spring (307).

3. The high and low temperature test chamber wire harness terminal fixing fixture according to claim 2, characterized in that: The bottom of the bonding plate (305) is made of a soft material, the vertical rod (306) is set as a "T" shaped structure, and the vertical rod (306) and the horizontal plate (302) are slidably connected.

4. The high and low temperature test chamber wire harness terminal fixing fixture according to claim 1, characterized in that: The support columns (5) are spaced at equal intervals on the top of the mounting block (4), and the upper end of the support column (5) is set as a suction cup structure. The support column (5) is set as a hollow structure that communicates with the auxiliary limiting structure (6).

5. The high and low temperature test chamber wire harness terminal fixing fixture according to claim 1, characterized in that: The auxiliary limiting structure (6) includes a slot (601), a piston plate (602), a first locking block (603), a first return spring (604), a first slot (605), a groove (606), a second locking block (607), a second slot (608), a second return spring (609), and a limiting baffle (610). The mounting block (4) has a slot (601) inside, and the piston plate (602) is connected inside the slot (601). The bottom of the piston plate (602) is connected to the first locking block (603) and the first return spring (604). The first locking block (603) is located inside the first slot (605), and the first slot (605) is opened inside the mounting block (4) and connected to the slot (601). The first card block (603) is located in the outer wall of the area of ​​the first card slot (605) with a groove (606), and one end of the second card block (607) is connected in the groove (606). The other end of the second card block (607) is located in the second card slot (608). The second card slot (608) is opened in the first card slot (605), and a second reset spring (609) is connected between the second card slot (608) and the second card block (607). The ends of the first card block (603) and the second card block (607) both penetrate the outer wall of the mounting block (4). The first card block (603) is located at the outer end of the mounting block (4) with a limit baffle (610), and the limit baffle (610) is parallel to the upper end of the support column (5).

6. The high and low temperature test chamber wire harness terminal fixing fixture according to claim 5, characterized in that: The slot (601) and piston plate (602) are both configured as comb-shaped structures, and the slot (601) and piston plate (602) are slidably connected. The second locking block (607) is located in the inner end area of ​​the groove (606) near the piston plate (602) and is configured as an inclined surface. The second locking block (607) and groove (606) are engaged.

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