A three-temperature test fixture for DC power supply

Abstract

The present invention relates to a three-temperature test fixture for a DC power supply, and belongs to the field of three-temperature detection technology. The three-temperature test fixture for a DC power supply comprises a fixed seat, a clamping mechanism, and a driving mechanism; an electrical connector group is arranged on the fixed seat, and the electrical connector group is used to connect an external test device; the clamping mechanism comprises a first push block, a first clamp probe, a second push block, a third push block, a second clamp probe, and a fourth push block; the driving mechanism is wedge-shapedly matched with the first push block, the second push block, the third push block, and the fourth push block, respectively, and the driving mechanism can drive the first push block and the second push block to move closer to or away from each other, and drive the third push block and the fourth push block to move closer to or away from each other, thereby achieving the clamping or loosening of the first clamp probe and the second clamp probe. The three-temperature test fixture for a DC power supply not only ensures the contact stability when clamping the pins of the DC power supply, but also ensures that the wear degree and deformation of the probe clamps are small during the process of clamping and loosening the pins of the DC power supply.

Description

Technical Field

[0001] The invention relates to the technical field of three-temperature detection, in particular to a three-temperature test fixture for a direct current power supply. Background Art

[0002] Direct current power supply (DC power supply) is a device commonly used in electronic products. It has the function of voltage conversion and can convert a higher input DC voltage into a DC voltage equivalent to the voltage level required by the device. At present, DC power supplies are mainly composed of a main body and pins. Direct current power supplies (DC power supplies) need to undergo three-temperature tests before leaving the factory. Three-temperature tests refer to tests conducted under high temperature, normal temperature, and low temperature environments. Test items include aging tests, reliability tests, etc. Among them, aging tests are very important and are related to the stability of the product after long-term use.

[0003] During the three-temperature test, the pins of the DC power supply and the test fixture need to be kept in a stable electrical connection state so that the DC power supply can be tested at three temperatures by the test equipment. At present, in order to improve the stability of the electrical connection contact between the pins of the DC power supply and the test fixture, a metal spring clip (with a clamping part) is usually installed in the socket of the test fixture, and the metal spring clip is squeezed after the pin of the DC power supply is inserted into the socket of the test fixture (that is, the pin is inserted into the clamping part), so that the metal spring clip exerts pressure on the pin to improve the contact stability. However, the plug-in method of squeezing the metal spring clip by the pin of the DC power supply is likely to cause the metal spring clip of the test fixture to wear for a long time, which in turn leads to the problem of unstable contact and affects the test effect. Summary of the invention

[0004] Based on this, the object of the present invention is to provide a three-temperature test fixture for a direct current power supply (DC power supply), which clamps or loosens the pins of the DC power supply through wedge-shaped movement, thereby ensuring the contact stability of the probe clip when clamping the pins of the DC power supply, and ensuring that the probe clip has little wear and deformation in the process of clamping and loosening the pins of the DC power supply.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A three-temperature test fixture for a DC power supply, comprising a fixing seat, a clamping mechanism, and a driving mechanism; an electrical connector group is arranged on the fixing seat, and the electrical connector group is used to connect an external test device; the clamping mechanism comprises a first push block, a first clip probe, a second push block, a third push block, a second clip probe, and a fourth push block; the first clip probe comprises a first clip and a second clip arranged at intervals, and a first pin accommodating area is provided between the first clip and the second clip; the first push block and the second push block are respectively arranged on the outside of the first clip and the second clip, and are respectively abutted against the first clip and the second clip; the second clip probe comprises a third clip and a fourth clip arranged at intervals, and a first pin accommodating area is provided between the third clip and the fourth clip The second pin accommodating area; the third push block and the fourth push block are respectively arranged on the outside of the third clip and the fourth clip, and are respectively abutted against the third clip and the fourth clip; the first clip, the second clip, the third clip and the fourth clip are respectively electrically connected to the electrical connector group; the driving mechanism is wedge-matched with the first push block, the second push block, the third push block and the fourth push block respectively, and the driving mechanism can drive the first push block and the second push block to move closer to or away from each other, and drive the third push block and the fourth push block to move closer to or away from each other, so that the first clip and the second clip move closer to or away from each other, and the third clip and the fourth clip move closer to or away from each other.

[0007] The three-temperature test fixture of the DC power supply of the present invention places the pins (positive pin and negative pin) of the DC power supply in the first pin accommodating area and the second pin accommodating area respectively, and uses the effect of wedge fit so that the driving mechanism drives the first push block and the second push block to move closer to or farther from each other, and drives the third push block and the fourth push block to move closer to or farther from each other, so that the first clamp and the second clamp are moved closer to or farther from each other, and the third clamp and the fourth clamp are moved closer to or farther from each other, thereby achieving the clamping or loosening of the positive pin and the negative pin of the DC power supply by the first clamp probe and the second clamp probe. The three-temperature test fixture of the DC power supply of the present invention is electrically connected to the electrical connector group through the first clamp, the second clamp, the third clamp, and the fourth clamp respectively, and is connected to an external test device (such as an aging test device or other electrical test equipment, etc.) through the electrical connector group. When the first clamp probe and the second clamp probe clamp the positive pin and the negative pin of the DC power supply, a path is formed for aging testing. The three-temperature test fixture of the DC power supply of the present invention drives the first clamp probe and the second clamp probe to clamp or loosen the positive pin and the negative pin of the DC power supply respectively through wedge-shaped movement, thereby ensuring the contact stability of the first clamp and the second clamp of the first clamp probe when clamping the positive pin or the negative pin of the DC power supply, and the contact stability of the third clamp and the fourth clamp of the second clamp probe when clamping the negative pin or the positive pin of the DC power supply, and also ensuring that the first clamp, the second clamp, the third clamp and the fourth clamp have little wear and deformation in the process of clamping and loosening the positive pin or the negative pin of the DC power supply.

[0008] As a preferred solution of the present invention, the three-temperature test fixture of the DC power supply of the present invention further includes a temperature measurement module, the temperature measurement module includes a temperature sensor, the temperature sensor is used to detect the temperature of the DC power supply; the temperature sensor is electrically connected to the electrical connector group. When the three-temperature test fixture of the DC power supply of the present invention clamps the DC power supply to perform a three-temperature test, the temperature of the DC power supply can also be detected by the temperature sensor, so as to perform a three-temperature test (such as a three-temperature aging test) while measuring the three-temperature of the DC power supply.

[0009] As a preferred solution of the present invention, the driving mechanism includes a driving assembly and a first push rod, a second push rod, and a third push rod that are sequentially arranged at intervals, and the driving assembly can drive the first push rod, the second push rod, and the third push rod to reciprocate along their length directions respectively; the first push block, the first clamping probe, and the second push block are sequentially arranged between the first push rod and the second push rod, the first push block is wedge-fitted with the first push rod, and the second push block is wedge-fitted with the second push rod; the third push block, the second clamping probe, and the fourth push block are sequentially arranged between the second push rod and the third push rod, the third push block is wedge-fitted with the second push rod, and the fourth push block is wedge-fitted with the third push rod. The three-temperature test fixture of the DC power supply of the present invention utilizes the driving assembly to drive the first push rod, the second push rod, and the third push rod to reciprocate along their length directions respectively, and under the action of the wedge-shaped fit, the first push block and the second push block can approach or move away from each other, and the third push block and the fourth push block can approach or move away from each other, thereby allowing the first clip probe and the second clip probe to clamp or loosen the positive pin and the negative pin of the power supply.

[0010] As a preferred solution of the present invention, the three-temperature test fixture of the DC power supply of the present invention also includes a fixing plate, wherein the fixing plate is fixed to the outer side of the fixing seat; the inner side surface of the fixing plate is provided with a first push rod slide groove, a second push rod slide groove, and a third push rod slide groove arranged at intervals, and the first push rod slide groove, the second push rod slide groove, and the third push rod slide groove all penetrate the groove from one side of the inner side surface of the fixing plate but do not penetrate the other side; the first push rod, the second push rod, and the third push rod are respectively slidably arranged in the first push rod slide groove, the second push rod slide groove, and the third push rod slide groove, one end of the first push rod, the second push rod, and the third push rod respectively pass through one side of the inner side surface of the fixing plate and are respectively connected to the driving assembly; the first push rod slide groove and the second push rod slide groove are connected to the first accommodating groove, and the second push rod slide groove and the third push rod slide groove are connected to the second accommodating groove; the outer side surface of the fixing plate is provided with a A first through hole and a second through hole extending through the second accommodating groove; the first push block, the first clip probe and the second push block are arranged in the first accommodating groove, wherein one end of the first clip and one end of the second clip are respectively inserted into the fixing seat and electrically connected to the electrical connector group through a wire, the other end of the first clip and the other end of the second clip are respectively extended into the first through hole, and the first pin accommodating area is formed between the other end of the first clip and the other end of the second clip; the third push block, the second clip probe and the fourth push block are arranged in the second accommodating groove, wherein one end of the third clip and one end of the fourth clip are respectively inserted into the fixing seat and electrically connected to the electrical connector group through a wire, the other end of the third clip and the other end of the fourth clip are respectively extended into the second through hole, and the second pin accommodating area is formed between the other end of the third clip and the other end of the fourth clip. The three-temperature test fixture of the DC power supply of the present invention is configured by setting the fixing plate and designing its structure so that the first push rod, the second push rod, the third push rod, the first push block, the first clip probe, the second push block, the third push block, the second clip probe, and the fourth push block are installed between the fixing plate and the fixing seat, and only the first through hole and the second through hole are formed on the outer side of the fixing plate, so that the positive pin and the negative pin of the DC power supply can be extended into the first pin accommodating area in the first through hole and the second pin accommodating area in the second through hole respectively, and then the positive pin and the negative pin of the DC power supply are clamped by the driving mechanism.

[0011] As a preferred solution of the present invention, the clamping mechanism further includes a first elastic member arranged between the other end of the first push rod and the end wall of the first push rod slot, a second elastic member arranged between the other end of the second push rod and the end wall of the second push rod slot, and a third elastic member arranged between the other end of the third push rod and the end wall of the third push rod slot. When the driving assembly drives the first push rod, the second push rod, and the third push rod to move toward the end wall of the first push rod slot, the end wall of the second push rod slot, and the end wall of the third push rod slot, the first elastic member, the second elastic member, and the third elastic member are compressed. When the driving assembly drives the first push rod, the second push rod, and the third push rod to move in the reverse direction, the force of the first elastic member, the second elastic member, and the third elastic member in the compressed state is used to improve the stability of the reverse movement.

[0012] As a preferred solution of the present invention, at least one side of the first accommodating groove is provided with a first pressure plate groove, and at least one side of the second accommodating groove is provided with a second pressure plate groove, and the clamping mechanism also includes a first pressure plate, a second pressure plate, a fourth elastic member, a fifth elastic member, a sixth elastic member, and a seventh elastic member; the first pressure plate is fixedly installed in the first pressure plate groove and is located between the first push block and the second push block; the fourth elastic member is clamped between the first push block and the first pressure plate, and the fifth elastic member is clamped between the first pressure plate and the second push block; the second pressure plate is fixedly installed in the second pressure plate groove and is located between the third push block and the fourth push block; the sixth elastic member is clamped between the third push block and the second pressure plate, and the seventh elastic member is clamped between the second pressure plate and the fourth push block. Through the design of the first pressing plate, the second pressing plate, the fourth elastic member, the fifth elastic member, the sixth elastic member and the seventh elastic member, when the driving mechanism drives the first push block and the second push block to approach each other, and drives the third push block and the fourth push block to approach each other, the fourth elastic member, the fifth elastic member, the sixth elastic member and the seventh elastic member are compressed; when the driving mechanism drives the first push block and the second push block to move away from each other, and drives the third push block and the fourth push block to move away from each other, the force of the fourth elastic member, the fifth elastic member, the sixth elastic member and the seventh elastic member in a compressed state is utilized to improve the stability of the movement away from each other.

[0013] As a preferred scheme of the present invention, the temperature measuring module also includes a limit sleeve and an eighth elastic member; the first pressing plate or the second pressing plate is provided with a temperature sensor accommodating portion, a temperature sensor accommodating cavity is provided inside the temperature sensor accommodating portion, a temperature sensor through hole is provided on the temperature sensor accommodating portion, and the temperature sensor through hole connects the temperature sensor accommodating cavity and the first through hole or the second through hole; the temperature sensor is arranged in the temperature sensor accommodating cavity, one end of the temperature sensor is connected to the electrical connector group through a wire, and the other end passes through the temperature sensor through hole and extends into the first through hole or the second through hole; the limit sleeve and the eighth elastic member are arranged in the temperature sensor accommodating cavity, the limit sleeve is fixedly mounted on the temperature sensor and abuts against the inner side wall of the temperature sensor through hole; the eighth elastic member is mounted on the temperature sensor and abuts against the limit sleeve and the end wall of the temperature sensor accommodating cavity respectively. With such a configuration, when the positive pin and the negative pin of the DC power supply extend into the first pin accommodating area in the first through hole and the second pin accommodating area in the second through hole, the other end of the temperature sensor can be close to the DC power supply to measure the temperature of the DC power supply, and through the design of the eighth elastic member and the limit sleeve, the other end of the temperature sensor can be kept extending into the first through hole or the second through hole, so as to facilitate proximity to the DC power supply without damaging the temperature sensor.

[0014] As a preferred solution of the present invention, the first clip, the second clip, the third clip and the fourth clip all have elastic deformation capability; the first push block is provided with a first elastic telescopic top block, and the first elastic telescopic top block abuts against the first clip; the second push block is provided with a second elastic telescopic top block, and the second elastic telescopic top block abuts against the second clip; the third push block is provided with a third elastic telescopic top block, and the third elastic telescopic top block abuts against the third clip; the fourth push block is provided with a fourth elastic telescopic top block, and the fourth elastic telescopic top block abuts against the fourth clip. When the first elastic telescopic top block, the second elastic telescopic top block, the second elastic telescopic top block and the second elastic telescopic top block abut against and press the first clip, the second clip, the third clip and the fourth clip respectively, the first clip and the second clip are close to each other, and the third clip and the fourth clip are close to each other, so as to clamp the positive pin and the negative pin of the DC power supply. If the low level continues, at this time, since the first clip, the second clip, the third clip, and the fourth clip cannot move due to being in a clamped state, the first elastic telescopic top block, the second elastic telescopic top block, the second elastic telescopic top block, and the second elastic telescopic top block will shrink respectively to prevent the first elastic telescopic top block, the second elastic telescopic top block, the second elastic telescopic top block, and the second elastic telescopic top block from damaging the first clip, the second clip, the third clip, and the fourth clip, or damaging the positive pin and negative pin of the current source due to excessive force.

[0015] As a preferred solution, the driving assembly includes a motor seat, a motor, a gear, a slider, a slider guide sleeve, a fourth push rod, and a push plate; the motor is fixed on the motor seat; the gear sleeve is arranged on the output shaft of the motor, the slider is slidably arranged on the sliding guide sleeve, the slider is provided with a meshing portion, and the gear meshes with the meshing portion; one end of the fourth push rod is fixedly connected to the slider, and the other end is fixedly connected to the push plate; one end of the first push rod, one end of the second push rod, and one end of the third push rod are fixedly connected to the push plate in sequence. The motor driving gear drives the slider to reciprocate on the slider guide sleeve, and drives the first push rod, the second push rod, and the third push rod to reciprocate under the action of the fourth push rod and the push plate.

[0016] As a preferred solution, the fixing seat is a square box-shaped structure, including a positioning fixing plate, a jig connecting plate, and a sealing plate; the jig connecting plate is a square frame structure open on both sides, the positioning fixing plate cover is arranged on one side of the jig connecting plate, and the electrical connector group is arranged on the outside of the positioning fixing plate; the sealing plate cover is arranged on the other side of the jig connecting plate; the fixing plate is arranged on the outside of the sealing plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a three-temperature test fixture of a direct current power supply of the present invention from one viewing angle;

[0018] Figure 2 for Figure 1 The structural refinement diagram of

[0019] Figure 3 for Figure 1 A structural diagram from another perspective;

[0020] Figure 4 for Figure 1 Exploded diagram of the structure;

[0021] Figure 5 This is the assembly structure diagram of the inner side of the fixed plate;

[0022] Figure 6 This is a structural diagram of the inner side of the fixed plate;

[0023] Figure 7 This is the structural diagram of the parts installed on the inner side of the fixed plate;

[0024] Figure 8 for Figure 7 Another side view of the component matching structure;

[0025] Fig. 9 This is an exploded view of the components installed on the inner side of the fixing plate;

[0026] Fig.10 This is the assembly structure diagram of the outer side of the fixed plate;

[0027] Fig.11 The exploded view of the assembly structure of the clamping plate, the limiting plate and the sealing plate;

[0028] Fig.12 This is the installation structure diagram of the card plate, limit plate and sealing plate (the view angle of this figure is the inner side view);

[0029] In the figure:

[0030] Fixed seat 1; electrical connector group 11; electrical connector 12; positioning fixing plate 13; positioning fork 131; jig connecting plate 14; sealing plate 15; through groove 151; limiting plate 16; clip through hole 161; clamping plate 17; clamping mechanism 2; first push block 21; second wedge surface 211; first elastic telescopic top block 212; ninth elastic member 2121; first top block 2122; limiting portion 21221; abutting portion 21222; first cover plate 213; first clip probe 22; first clip 221; second clip 222; first fixing member 223; second push block 23; fourth wedge surface 231; second elastic telescopic top block 232; second top block 2321; second cover plate 233; second top block through hole 2331; third push block 24; sixth wedge surface 241; third elastic telescopic top block 242; third cover plate 243; second clip probe 25; third clip 251; fourth clip 252; second fixing member 253; fourth push block 26; eighth wedge surface 261; fourth elastic telescopic top block 262; twelfth elastic member 2621; fourth top block 2622; fourth cover plate 263; fourth top block through hole 2631; first elastic elastic member 27; second elastic member 28; third elastic member 29; first pressing plate 201; second pressing plate 202; temperature sensor accommodating portion 2021; temperature sensor accommodating cavity 2022; temperature sensor through hole 2023; fourth elastic member 203; fifth elastic member 204; sixth elastic member 205; seventh elastic member 206; driving mechanism 3; first push rod 31; first wedge surface 311; second push rod 32; third wedge surface 321; fifth wedge surface 322; third push rod 33; seventh wedge surface 331; motor seat 34; origin sensor 341; sensor fixed Fixed member 342; motor 35; gear 36; slider 37; toothed portion 371; connecting portion 372; induction sheet 373; slider guide sleeve 38; first limit seat 381; second limit seat 382; fourth push rod 39; push plate 310; fixed plate 4; first push rod slide groove 41; second push rod slide groove 42; third push rod slide groove 43; first accommodating groove 44; first pressure plate groove 441; second accommodating groove 45; second pressure plate groove 451; first through hole 46; second through hole 47; temperature measuring module 5; temperature sensor 51; limit sleeve 52; eighth elastic member 53. DETAILED DESCRIPTION

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In addition, the terms first, second, third, etc. in the specification and claims are only used for the purpose of describing the same technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated, nor necessarily describing the order or time sequence. The terms are interchangeable where appropriate. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0033] Similarly, the term "connection" is also used in the specification and claims, which should not be interpreted as limited to direct connection. Therefore, the expression "device A is connected to device B" should not be limited to the device A being directly connected to device B in the device or system, which means that there is a path between device A and device B, which may be a path including other devices or tools.

[0034] During the three-temperature test of the DC power supply, it is necessary to keep the pins of the DC power supply and the three-temperature test fixture in a stable electrical connection state. In order to improve the contact stability of the existing three-temperature test fixture of the DC power supply, it is necessary to insert the pins of the DC power supply into the jacks of the three-temperature test fixture and then squeeze the metal spring clip so that the metal spring clip applies pressure on the pins to improve the contact stability. However, the use of this plug-in method of squeezing the metal spring clip by the pins of the DC power supply can easily cause the metal spring clip to wear over a long period of time, which in turn leads to the problem of unstable contact and affects the test effect.

[0035] This embodiment takes into account the shortcomings of the existing three-temperature test fixture of the DC power supply, and newly designs a three-temperature test fixture of the DC power supply, which clamps or loosens the pins of the DC power supply through wedge-shaped movement, thereby ensuring the contact stability of the probe clip when clamping the pins of the DC power supply, and ensuring that the probe clip has little wear and deformation in the process of clamping and loosening the pins of the DC power supply.

[0036] A three-temperature test fixture for a DC power supply of this embodiment is shown in FIG. Figure 1 , including a fixing seat 1, a clamping mechanism 2, and a driving mechanism 3; please refer to Figure 3 The fixing base 1 is provided with an electrical connector set 11, which is used to connect external test equipment (for example, aging test equipment or other electrical test equipment). Figure 1-2 and Figure Figure 4-Figure 9 The clamping mechanism 2 includes a first push block 21, a first clamping probe 22, a second push block 23, a third push block 24, a second clamping probe 25, and a fourth push block 26; see Figure 7 and Figure 8The first clamp probe 22 includes a first clamp 221 and a second clamp 222 arranged at intervals, and a first pin accommodating area is provided between the first clamp 221 and the second clamp 222, and the first pin accommodating area is used to accommodate the positive pin (or negative pin) of the DC power supply; the first push block 21 and the second push block 23 are respectively arranged on the outside of the first clamp 221 and the second clamp 222, and are respectively in contact with the first clamp 221 and the second clamp 222; please refer to Figure 7 and Figure 8 The second clip probe 25 includes a third clip 251 and a fourth clip 252 that are spaced apart, and a second pin accommodating area is provided between the third clip 251 and the fourth clip 252, and the second pin accommodating area is used to accommodate the negative pin (or positive pin) of the DC power supply; the third push block 24 and the fourth push block 26 are respectively arranged on the outside of the third clip 251 and the fourth clip 252, and are respectively abutted against the third clip 251 and the fourth clip 252; the first clip 221, the second clip 222, the third clip 251, and the fourth clip 252 are respectively electrically connected to the electrical connector group. The driving mechanism 3 is wedge-shapedly matched with the first push block 21, the second push block 23, the third push block 24 and the fourth push block 26 respectively. The driving mechanism 3 can drive the first push block 21 and the second push block 23 to move closer to or away from each other, and drive the third push block 24 and the fourth push block 26 to move closer to or away from each other, thereby making the first clamp 221 and the second clamp 222 move closer to or away from each other, and the third clamp 251 and the fourth clamp 252 move closer to or away from each other.

[0037] In the three-temperature test fixture of the DC power supply of the present invention, the first pin accommodating area between the first clamp 221 and the second clamp 222 and the second pin accommodating area between the third clamp 251 and the fourth clamp 252 are respectively used to accommodate the positive pin and the negative pin of the DC power supply. Through the wedge-shaped matching design, the driving mechanism 3 drives the first push block 21 and the second push block 23 to move closer to or away from each other, and the third push block 24 and the fourth push block 26 to move closer to or away from each other, so that the first clamp 221 and the second clamp 222 move closer to or away from each other, and the third clamp 251 and the fourth clamp move closer to or away from each other, thereby realizing the clamping or loosening of the positive pin and the negative pin of the DC power supply by the first clamp probe 22 and the second clamp probe 25, that is, the first clamp 221 and the second clamp 222 move closer to each other to clamp or move away from each other to loosen the positive pin (or negative pin) of the DC power supply located in the first pin accommodating area, and the third clamp 221 and the fourth clamp 222 move closer to each other to clamp or move away from each other to loosen the negative pin (or positive pin) of the DC power supply located in the second pin accommodating area. The three-temperature test fixture of the DC power supply of the present invention drives the first clamp probe 22 and the second clamp probe 25 to clamp or loosen the positive pin and the negative pin of the DC power supply through wedge-shaped movement, thereby ensuring the contact stability of the first clamp 221 and the second clamp 222 of the first clamp probe 22 when clamping the positive pin or the negative pin of the DC power supply, and the contact stability of the third clamp 251 and the fourth clamp 252 of the second clamp probe 25 when clamping the negative pin or the positive pin of the DC power supply, and ensuring that the first clamp 221, the second clamp 222, the third clamp 251, and the fourth clamp 252 have little wear and deformation in the process of clamping and loosening the positive pin or the negative pin of the DC power supply.

[0038] In the three-temperature test fixture of the DC power supply of the present invention, the first clamp 221, the second clamp 222, the third clamp 251, and the fourth clamp 252 are electrically connected to the electrical connector group 11 respectively, and are connected to an external test device (for example, an aging test device or other electrical test device) through the electrical connector group 11. The positive pin and the negative pin of the DC power supply are respectively extended into the first pin accommodating area and the second pin accommodating area, and the driving mechanism 3 is used to drive the first clamp 221 and the second clamp 222 to approach each other to clamp the positive pin (or negative pin) of the DC power supply located in the first pin accommodating area, the third clamp 221, and the fourth clamp 222 are brought close to each other to clamp the negative pin (or positive pin) of the DC power supply located in the second pin accommodating area, forming a circuit path and using an external test equipment (aging test equipment) externally connected to the electrical connector group 11 to perform a three-temperature test on the DC power supply; after the test is completed, the first clamp 221 and the second clamp 222 are driven away from each other to loosen the positive pin (or negative pin) of the DC power supply located in the first pin accommodating area, and the third clamp 221 and the fourth clamp 222 are driven away from each other to loosen the negative pin (or positive pin) of the DC power supply located in the second pin accommodating area, thereby removing the DC power supply and completing the three-temperature test.

[0039] In this example, see Figure 1-Figure 10 The driving mechanism 3 includes a driving assembly and a first push rod 31, a second push rod 32, and a third push rod 33 which are arranged in sequence and at intervals. The driving assembly can drive the first push rod 31, the second push rod 32, and the third push rod 33 to reciprocate along their length directions. Figure 7 and Figure 8 The first push block 21, the first clamp probe 22, and the second push block 23 are sequentially arranged between the first push rod 31 and the second push rod 32, the first push block 21 and the first push rod 31 are wedge-fitted, and the second push block 23 and the second push rod 32 are wedge-fitted; the third push block 24, the second clamp probe 25, and the fourth push block 26 are sequentially arranged between the second push rod 32 and the third push rod 33, the third push block 24 and the second push rod 32 are wedge-fitted, and the fourth push block 26 and the third push rod 33 are wedge-fitted. The three-temperature test fixture of the DC power supply of this embodiment uses a driving component to drive the first push rod 31, the second push rod 32, and the third push rod 33 to reciprocate along their length directions respectively. Under the action of the wedge-fitting, the first push block 21 and the second push block 23 are moved closer to or away from each other, and the third push block 24 and the fourth push block 26 are moved closer to or away from each other, so that the first clamp probe 22 and the second clamp probe 25 clamp or release the positive pin and the negative pin of the DC power supply.

[0040] Specifically, in this embodiment, please refer to Figure 7The first push rod 31, the second push rod 32, and the third push rod 33 are arranged in parallel, and a first wedge surface 311 is provided on the side of the first push rod 31 close to the first push block 21, and a second wedge surface 211 adapted to the first wedge surface 311 is provided on the side of the first push block 21 close to the first push rod 31; a third wedge surface 321 is provided on the side of the second push rod 32 close to the second push block 23, and a fourth wedge surface 231 adapted to the third wedge surface 321 is provided on the side of the second push rod 32 close to the second push rod 32; a fifth wedge surface 322 is provided on the side of the second push rod 32 close to the third push block 24, and a sixth wedge surface 241 adapted to the fifth wedge surface 322 is provided on the side of the third push block 24 close to the second push rod 32; a seventh wedge surface 331 is provided on the side of the third push rod 33 close to the fourth push block 26, and an eighth wedge surface 261 adapted to the seventh wedge surface 331 is provided on the side of the fourth push block 26 close to the third push rod 33. The first push rod 31, the second push rod 32, and the third push rod 33 are driven by the driving assembly to reciprocate along their length directions. Under the action of the wedge fit, the first push block 21 and the second push block 23 can move closer to or farther from each other, and the third push block 24 and the fourth push block 26 can move closer to or farther from each other. In this embodiment, a plurality of first wedge surfaces 311, second wedge surfaces 211, third wedge surfaces 321, fourth wedge surfaces 231, fifth wedge surfaces 322, sixth wedge surfaces 241, seventh wedge surfaces 331, and eighth wedge surfaces 261 are provided.

[0041] In this example, see Figure 1-Figure 3 The three-temperature test fixture of the DC power supply of this embodiment further includes a fixing plate 4, which is fixed to the outside of the fixing seat 1; preferably, the electrical connector group 11 is arranged on one outer side of the fixing seat 1, and the fixing plate 4 is fixed to the other opposite outer side of the fixing seat 1. Figure 6 The inner side surface of the fixing plate 4 is provided with a first push rod slot 41, a second push rod slot 42, and a third push rod slot 43 arranged at intervals. The first push rod slot 41, the second push rod slot 42, and the third push rod slot 43 all penetrate the slot from one side of the inner side surface of the fixing plate 4 but do not penetrate the other side; please refer to Figure 5-Figure 8 The first push rod 31, the second push rod 32, and the third push rod 33 are slidably disposed in the first push rod slot 41, the second push rod slot 42, and the third push rod slot 43, respectively, wherein one end of the first push rod 31, the second push rod 32, and the third push rod 33 respectively passes through one side of the inner side surface of the fixing plate 4 and is respectively connected to the driving assembly, so that the driving assembly drives the first push rod 31, the second push rod 32, and the third push rod 33 to reciprocate in the first push rod slot 41, the second push rod slot 42, and the third push rod slot 43, respectively. Please refer to Figure 6In addition, a first receiving groove 44 is connected between the first push rod slide groove 41 and the second push rod slide groove 42, and a second receiving groove 45 is connected between the second push rod slide groove 42 and the third push rod slide groove 43; see Figure 7 and Fig.10 The outer side surface of the fixing plate 4 is provided with a first through hole 46 penetrating to the first accommodation groove 44 and a second through hole 47 penetrating to the second accommodation groove 45. The first push block 21, the first clamping probe 22, and the second push block 23 are arranged in the first accommodation groove 44, wherein one end of the first clamping piece 221 and one end of the second clamping piece 222 are respectively inserted into the fixing seat 4, and are electrically connected to the electrical connector assembly 11 through a wire, and the other end of the first clamping piece 221 and the other end of the second clamping piece 222 are respectively extended into the first through hole 46, and a first pin accommodation area is formed between the other end of the first clamping piece 221 and the other end of the second clamping piece 222. The third push block 24, the second clip probe 25, and the fourth push block 26 are arranged in the second accommodating groove 45, wherein one end of the third clip 251 and one end of the fourth clip 252 are respectively inserted into the fixing seat 4, and are electrically connected to the electrical connector group 11 through wires, and the other end of the third clip 251 and the other end of the fourth clip 252 are respectively extended into the second through hole 47, and a second pin accommodating area is formed between the other end of the third clip 251 and the other end of the fourth clip 252. The three-temperature test fixture of the DC power supply of this embodiment is configured by setting a fixing plate 4 and designing its structure so that the first push rod 31, the second push rod 32, the third push rod 33, the first push block 21, the first clamp probe 22, the second push block 23, the third push block 24, the second clamp probe 25, and the fourth push block 26 are installed between the fixing plate 4 and the fixing seat 1, and only the first through hole 46 and the second through hole 47 are formed on the outer side of the fixing plate 4 so that the positive pin and the negative pin of the DC power supply are respectively extended into the first pin accommodating area in the first through hole 46 and the second pin accommodating area in the second through hole 47, and then the positive pin and the negative pin of the DC power supply are clamped by the cooperation of the driving mechanism 3 and the clamping mechanism 2.

[0042] In order to improve the stability of the reciprocating sliding of the first push rod 31, the second push rod 32, and the third push rod 33, in this embodiment, please refer to Figure 5-Figure 8The clamping mechanism 2 further includes a first elastic member 27 disposed between the other end of the first push rod 31 and the end wall of the first push rod slot 41, a second elastic member 28 disposed between the other end of the second push rod 32 and the end wall of the second push rod slot 42, and a third elastic member 29 disposed between the other end of the third push rod 33 and the end wall of the third push rod slot 43. When the driving assembly drives the first push rod 31, the second push rod 32, and the third push rod 33 to move toward the end wall of the first push rod slot 41, the end wall of the second push rod slot 42, and the end wall of the third push rod slot 43, the first elastic member 27, the second elastic member 28, and the third elastic member 29 are compressed. When the driving assembly drives the first push rod 31, the second push rod 32, and the third push rod 33 to move in the reverse direction, the first elastic member 28, the second elastic member 29, and the third elastic member 30 are in a compressed state to improve the stability of the reverse movement. In this embodiment, the first elastic member 27, the second elastic member 28, and the third elastic member 29 are all springs.

[0043] In this example, see Figure 6 The first accommodating groove 44 is provided with a first pressing plate groove 441 on both sides, and the second accommodating groove 45 is provided with a second pressing plate groove 451 on both sides. Figure 5-Figure 8The clamping mechanism also includes two first pressing plates 201, two second pressing plates 202, two fourth elastic members 203, two fifth elastic members 204, two sixth elastic members 205, and two seventh elastic members 206; the two first pressing plates 201 are respectively fixedly mounted in the two first pressing plate grooves 441 and are located between the first push block 21 and the second push block 23; the two fourth elastic members 203 are respectively clamped between the two ends of the first push block 21 and the two first pressing plates 201, and the two fifth elastic members 204 are respectively clamped between the two first pressing plates 201 and the two ends 23 of the second push block; the two second pressing plates 202 are respectively fixedly mounted in the two second pressing plate grooves 451 and are located between the third push block 24 and the fourth push block 26; the two sixth elastic members 205 are respectively clamped between the two ends of the third push block 24 and the two second pressing plates 202, and the two seventh elastic members 206 are respectively clamped between the two second pressing plates 202 and the two ends of the fourth push block. Through the design of the two first pressing plates 201, the two second pressing plates 202, the two fourth elastic members 203, the two fifth elastic members 204, the two sixth elastic members 205, and the two seventh elastic members 206, when the driving assembly of the driving mechanism 3 drives the first push rod 31, the second push rod 32, and the third push rod 33 to move toward the end wall of each first push rod slot 41, the second push rod slot 42, and the third push rod slot 43, the first push block 21 and the second push block 23 approach each other, and the third push block 24 and the fourth push block 26 approach each other, because the two first pressing plates 201 and the two second pressing plates 202 are fixed, the two ends of the first push block 21 are compressed and the two fourth elastic members 203 and the second push block 24 and the fourth push block 26 are compressed and the second push block 24 and the fourth push block 26 are compressed and the second push block 24 and the fourth push block 26 are compressed and the second push block 21 and the second push block 23 ...1 and the second push block 23 are compressed and the second push block 21 and the second push block 23 are compressed and the second The two ends of the two push blocks 23 compress the two fifth elastic members 204, the two ends of the third push block 24 compress the two sixth elastic members 205, and the two ends of the fourth push block 26 compress the two seventh elastic members 206; when the driving assembly of the driving mechanism 3 drives the first push rod 31, the second push rod 32, and the third push rod 33 to move in the opposite direction, the two fourth elastic members 203, the two fifth elastic members 204, the two sixth elastic members 205, and the two seventh elastic members 206 are in a compressed state, which helps the first push block 21 and the second push block 23 to move away from each other, and the third push block 24 and the fourth push block 26 to move away from each other, thereby improving the stability of the movement away from each other. In this embodiment, the fourth elastic member 203, the fifth elastic member 204, the sixth elastic member 205, and the seventh elastic member 206 are all springs. In this embodiment, the first pressure plate groove 441 and the second pressure plate groove 451 are formed by two groove walls on the sides of the first accommodating groove 44 and the second accommodating groove 45, respectively. Through holes are provided on the groove walls, which are used for the fourth elastic member 203, the fifth elastic member 204, the sixth elastic member 205, and the seventh elastic member 206 to pass through and limit, respectively, so as to abut against the first pressure plate and the second pressure plate.

[0044] In this embodiment, in order to facilitate the first push rod 31, the second push rod 32, and the third push rod 33 to slide along the length direction in the first push rod slot 41, the second push rod slot 42, and the third push rod slot 43 when the driving assembly drives them respectively, the first push block 21, the second push block 23, the third push block 24, and the fourth push block 26 are not driven to slide together, but only move the first push block 21 and the second push block 23 closer to or farther from each other, and the third push block 24 and the fourth push block 26 closer to or farther from each other under the action of the wedge-shaped fit. The ends of the first push block 21 and the second push block 23 are respectively limited between the two side walls of the first accommodating groove 44, and the ends of the third push block 24 and the fourth push block 26 are respectively between the two side walls of the second accommodating groove 45, so that the first push block 21 and the second push block 23, the third push block 24 and the fourth push block 26 can only move closer to or farther from each other, and cannot move in the same direction with the first push rod 31, the second push rod 32, and the third push rod 33.

[0045] The three-temperature test fixture of the DC power supply of this embodiment also includes a temperature measurement module 5, see Figure 1 , Figure 4 and Figure 8-Figure 10 The temperature measurement module 5 includes a temperature sensor 51, which is used to detect the temperature of the DC power supply; the temperature sensor 51 is electrically connected to the electrical connector 11. The three-temperature test fixture of the DC power supply of this embodiment can also detect the temperature of the DC power supply through the temperature sensor 51 when clamping the DC power supply for the three-temperature test, so as to realize the three-temperature test (such as the three-temperature aging test) while measuring the three-temperature temperature of the DC power supply.

[0046] In this example, see Fig. 9 and Fig.10The temperature measurement module 5 specifically includes a temperature sensor 51, a limit sleeve 52, and an eighth elastic member 53; the first pressing plate 201 or the second pressing plate 202 is provided with a temperature sensor accommodating portion 2021 for accommodating the temperature measurement module 5. In this embodiment, the temperature sensor accommodating portion 2021 is arranged on one of the second pressing plates 202, and the temperature sensor accommodating portion 2021 extends to the second through hole 47; a temperature sensor accommodating cavity 2022 is arranged inside the temperature sensor accommodating portion 2021, and a temperature sensor through hole 2023 is arranged on the temperature sensor accommodating portion 2021, and the temperature sensor through hole 2023 is connected to the temperature sensor accommodating cavity 2022 and the second through hole 47; the temperature sensor 51 is arranged in the temperature sensor accommodating cavity 2022, and one end of the temperature sensor 51 is connected to the temperature sensor accommodating cavity 2022 through a wire. It passes through the fixing seat 1 and is electrically connected to the temperature sensor connector 12, and the other end passes through the temperature sensor through hole 2023 and extends into the second through hole 47; the limiting sleeve 52 and the eighth elastic member 53 are arranged in the temperature sensor accommodating cavity 2022, and the limiting sleeve 52 is fixedly sleeved on the temperature sensor 51 and abuts against the inner side wall of the temperature sensor through hole 2023; the eighth elastic member 53 is sleeved on the temperature sensor and abuts against the limiting sleeve 52 and the end wall of the temperature sensor accommodating cavity 2022 respectively, so that the other end of the temperature sensor 51 remains extended into the second through hole 47. With such arrangement, when the positive and negative pins of the DC power supply extend into the first pin accommodation area in the first through hole 46 and the second pin accommodation area in the second through hole 47, the other end of the temperature sensor 51 can be close to the DC power supply to measure the temperature of the DC power supply, and through the design of the eighth elastic member 53 and the limiting sleeve 52, the other end of the temperature sensor 51 can be kept extending into the second through hole 47, so as to be close to the DC power supply without damaging the temperature sensor 51. In this embodiment, the eighth elastic member 53 is a spring.

[0047] In this example, see Figure 7 and Figure 8The first clip probe 22 also includes a first fixing member 223 wrapped in the middle part of the first clip 221 and the second clip 221, and the first fixing member 223 is used to set the first clip 221 and the second clip 221 at intervals, and the first fixing member 223 extends from both ends of the first clip 221 and the second clip 222 respectively; similarly, the second clip probe 25 also includes a second fixing member 253 wrapped in the middle part of the third clip 251 and the fourth clip 252, and the third clip 251 and the fourth clip 252 are set at intervals through the second fixing member 253; the first clip 221, the second clip 222, the third clip 251, and the fourth clip 252 all have elastic deformation ability, which is the elastic deformation ability possessed by the clips of the existing clip probes and will not be repeated here. The first push block 21 , the second push block 23 , the third push block 24 and the fourth push block 26 are respectively in contact with the outer side of the other end of the first clamp 221 , the outer side of the other end of the second clamp 222 , the outer side of the other end of the third clamp 251 and the outer side of the other end of the fourth clamp 252 .

[0048] See also Figure 7 and Figure 8 In order to facilitate the first push block 21, the second push block 23, the third push block 24, and the fourth push block 26 to respectively abut the first clip 221, the second clip 222, the third clip 251, and the fourth clip 252, in this embodiment, a first elastic telescopic top block 212 is provided on the side of the first push block 21 close to the first clip 221, and the first elastic telescopic top block 212 abuts against the first clip 221. Preferably, the initial elastic force of the first elastic telescopic top block 221 is greater than the initial elastic force of the first clip 221. A second elastic telescopic top block 232 is provided on the side of the second push block 23 close to the second clip 222, and the second elastic telescopic top block 232 abuts against the second clip 222. Preferably, the initial elastic force of the second elastic telescopic top block 232 is greater than the initial elastic force of the second clip 222. A third elastic telescopic top block 242 is provided on one side of the third push block 24 close to the third clamping piece 251, and the third elastic telescopic top block 242 abuts against the third clamping piece 251. Preferably, the initial elastic force of the third elastic telescopic top block 242 is greater than the initial elastic force of the third clamping piece 251. A fourth elastic telescopic top block 262 is provided on one side of the fourth push block 26 close to the fourth clamping piece 252, and the fourth elastic telescopic top block 262 abuts against the fourth clamping piece 252. The initial elastic force of the fourth elastic telescopic top block 262 is greater than the initial elastic force of the fourth clamping piece 252.

[0049] See also Figure 7 and Figure 8In this embodiment, a plurality of first clip probes 22 and a plurality of second clip probes 25 are respectively provided, and a plurality of first clip probes 22 are provided between the first push block 21 and the second push block 23, and a plurality of first clip probes 25 are provided between the third push block 24 and the fourth push block 26. The first push block 21 is provided with a plurality of first elastic telescopic top blocks 212, and the plurality of first elastic telescopic top blocks 212 are respectively abutted against the outer sides of the other ends of the first clips 221 of the plurality of first clip probes 22; the second push block 23 is provided with a plurality of second elastic telescopic top blocks 232, and the plurality of second elastic telescopic top blocks 232 are respectively abutted against the outer sides of the other ends of the second clips 222 of the plurality of first clip probes 22. The third push block 24 is provided with a plurality of third elastic telescopic top blocks 242, which respectively abut against the outer sides of the other ends of the third clamps 251 of the second clamp probes 25; the fourth push block 26 is provided with a plurality of fourth elastic telescopic top blocks 262, which respectively abut against the outer sides of the other ends of the fourth clamps 222 of the second clamp probes 25.

[0050] In this embodiment, the structures of the first elastic telescopic top block 212, the second elastic telescopic top block 232, the third elastic telescopic top block 242, and the fourth elastic telescopic top block 262 are all the same. Fig. 9, taking the structure of the first elastic telescopic top block 212 and the structure on the first push block 31 as an example: a first elastic telescopic top block accommodating groove (not shown) and a first cover plate 213 are provided on one side of the first push block 21 close to the first clamping piece 221, the first cover plate 213 is covered on the first elastic telescopic top block accommodating groove (not shown) and encloses to form a first elastic telescopic top block accommodating cavity (not shown), and a plurality of first top block through holes (not shown, similar to the fourth top block through holes 2631 on the fourth cover plate 263) are provided on the first cover plate 213; each first elastic telescopic top block 212 includes a ninth elastic The ninth elastic member 2121 and the first top block 2122, the first top block 2122 includes an integrally formed limiting portion 21221 and abutting portion 21222; the limiting portion 21221 is located in the first elastic telescopic top block accommodating groove and cannot pass through the first top block through hole; one end of the abutting portion 21222 is connected to the limiting portion 212, and the other end extends out of the first top block through hole and abuts against the first clip 221; the ninth elastic member 2121 is arranged in the first elastic telescopic top block accommodating cavity, and the two ends of the ninth elastic member 2121 are respectively abutted against the first elastic telescopic top block accommodating groove (not shown) and the limiting portion 21221. The initial elastic force of the ninth elastic member 2121 is greater than the initial elastic force of the first clip 221. When the first top block 2122 abuts against and presses the first clip 221, the first clip 221 and the second clip 222 are brought close to each other to clamp the positive pin or the negative pin of the DC power supply. If the clamping force continues to be applied, since the first clip 221 cannot move in the clamped state, the abutting portion 21222 of the first top block 2122 can extend into the through hole of the first top block to prevent the first top block 2122 from crushing the first clip 221 or the positive pin or the negative pin of the DC power supply.

[0051] For the design of the first push block 21 and the first elastic telescopic top block 212, please refer to Fig. 9The second push block 23 is provided with a second elastic telescopic top block receiving groove (not shown) and a second cover plate 233, and the second cover plate 233 is provided with a plurality of second top block through holes 2331, and each second elastic telescopic top block 232 includes a tenth elastic member (not shown) and a second top block 2321. The third push block 24 is provided with a third elastic telescopic top block receiving groove (not shown) and a third cover plate 243, and the third cover plate 243 is provided with a plurality of third top block through holes (not shown), and each third elastic telescopic top block 242 includes an eleventh elastic member (not shown) and a third top block (not shown). The fourth push block 26 is provided with a fourth elastic telescopic top block receiving groove (not shown) and a fourth cover plate 263, and the fourth cover plate 263 is provided with a plurality of fourth top block through holes 2631, and each fourth elastic telescopic top block 262 includes a twelfth elastic member 2621 and a fourth top block 2622. In this embodiment, by designing the first push block 21 and the first elastic telescopic top block 212, the second push block 23 and the second elastic telescopic top block 232, the third push block 24 and the third elastic telescopic top block 242, the fourth push block 26 and the fourth elastic telescopic top block 262, it is prevented that the first clamp 221 and the second clamp 222 are close to each other, and the third clamp 251 and the fourth clamp 252 are close to each other in the process of the first push block 21 and the second push block 23 approaching each other, and the third push block 24 and the fourth push block 26 approaching each other, so as to clamp the positive and negative pins of the DC power supply, and it is also prevented that the clamping force is too large to cause damage to the first clamp 221, the second clamp 222, the third clamp 251, the fourth clamp 252, and the positive and negative pins of the DC power supply. In this embodiment, the ninth elastic member 2121, the tenth elastic member (not shown), the eleventh elastic member 2421, and the twelfth elastic member (not shown) are all springs.

[0052] In this embodiment, in order to facilitate driving the first push rod 31, the second push rod 32, and the third push rod 33 to move back and forth. Figure 2 , Figure 3 and Figure 4In this embodiment, the driving assembly includes a motor base 34, a motor 35, a gear 36, a slider 37, a slider guide sleeve 38, a fourth push rod 39, and a push plate 310; the motor 35 is fixed on the motor base 34; the gear 36 is sleeved on the output shaft of the motor 35, the slider 37 is slidably arranged on the sliding guide sleeve 38, the slider 37 is provided with a meshing portion 371, and the gear 36 is meshed with the meshing portion 371; one end of the fourth push rod 39 is fixedly connected to the slider 37, and the other end is fixedly connected to the push plate 310; one end of the first push rod 31, one end of the second push rod 32, and one end of the third push rod 32 are fixedly connected to the push plate 310 in sequence. The motor 35 drives the gear 36 to drive the slider 37 to reciprocate on the slider guide sleeve 38, and drives the first push rod 31, the second push rod 32, and the third push rod 33 to reciprocate under the action of the fourth push rod 39 and the push plate 310. In this embodiment, the motor 35 is a stepping motor.

[0053] In this example, see Figure 4 The fixing seat 1 is a square box-shaped structure, including a positioning fixing plate 13, a jig connecting plate 14, and a sealing plate 15; the jig connecting plate 14 is a square frame structure with two sides open, the positioning fixing plate 13 is covered on one side of the jig connecting plate 14, and the electrical connector group 11 is arranged on the outside of the positioning fixing plate; the sealing plate 15 is covered on the other side of the jig connecting plate 14; the fixing plate 4 is arranged on the outside of the sealing plate 15. In this embodiment, please refer to Figure 3 The electrical connector group 11 includes a plurality of electrical connectors 12, which are respectively connected to the first clip 221, the second clip 222, the third clip 251, and the fourth clip 252. The plurality of electrical connectors 12 are used to connect to external testing equipment to perform three-temperature testing.

[0054] In this example, see Figure 2 , the size of the fixing plate 4 is smaller than the sealing plate 15; please refer to Fig.11 A through hole groove 151 is provided in the middle of the sealing plate 15, and the through hole groove 151 is a corresponding groove formed by connecting the first push rod sliding groove 41, the second push rod sliding groove 42, the third push rod sliding groove 43, the first accommodating groove 44 and the second accommodating groove 45 on the corresponding fixing plate 4; the fixing plate 4 is fixed on the outer side of the through hole groove 151 to install the first push rod 31, the second push rod 32, the third push rod 33, the first push block 21, the first clamping piece probe 22, the second push block 23, the third push block 24, the second clamping piece probe 25, and the fourth push block 26 between the fixing plate 4 and the sealing plate 15; please refer to Fig.11 and Fig.12, a limit plate 16 is provided on the inner side of the sealing plate 15, and the limit plate 16 covers the through hole groove 151 of the sealing plate 15 and is located on the inner side of the sealing plate 15; a plurality of clip through holes 161 are provided on the limit plate 16, for one end of the first clip 221, the second clip 222, the third clip 223, and the fourth clip 224 to pass through and be fixed, so as to facilitate electrical connection with the electrical connector group 11 on the positioning and fixing plate 13 through a wire. In order to facilitate the setting of the limit plate 16, in this embodiment, a clamping plate 17 is further provided between the jig connecting plate 14 and the sealing plate 15; the size of the clamping plate 17 is adapted to the jig connecting plate 14 and the sealing plate 15, wherein the limit plate 16 is fixed in the middle of the clamping plate 17, so that after the jig connecting plate 14, the clamping plate 17, and the sealing plate 15 are installed, the limit plate 16 can be close to the inner side of the sealing plate 4 and cover the through hole groove 151 of the sealing plate 15.

[0055] See also Figure 2-Figure 4 , the motor seat 34 is fixed on one side of the positioning and fixing plate 13. Preferably, in this embodiment, an intermediate positioning fork groove is provided on one side of the positioning and fixing plate 13, and a positioning fork 131 is fixedly installed in the intermediate positioning fork groove. The positioning fork 131 extends out of one side of the jig connecting plate 14, and the motor seat 34 is fixed to the end of the positioning fork 131 and is located on one side of the jig connecting plate 14; a motor 35 is installed on the side of the motor seat 34 on the same side as the outer side of the positioning and fixing plate 13, and the output shaft of the motor 35 passes through the motor seat; a slider guide sleeve 37 is fixed on the other side of the motor seat 34 and is located below the output shaft of the motor 35; a gear 36 is fixedly sleeved on the output shaft of the motor 35, and the slider 37 can be set on the guide sleeve 38 in a sliding manner, and the meshing relationship between the gear 36 and the slider 37 is utilized to drive the slider 37 to slide back and forth on the guide sleeve 38 through the motor; a first limit seat 381 and a second limit seat 382 are respectively provided at both ends of the slider guide sleeve 38 to limit the slider 37 from sliding out of the slider guide sleeve 38. The slider 37 has a connecting portion 372 extending out of the outer side of the sealing plate 15, and the push plate 310 is arranged on one side of the fixed plate 14. The two ends of the fourth push rod 39 are respectively fixedly connected to the connecting portion 372 of the slider 37 and the push plate 310; so that when the slider 37 slides back and forth on the guide sleeve 38, the first push rod 31, the second push rod 32, and the third push rod 33 connected to the push plate 310 are driven to reciprocate.

[0056] In this example, see Figure 2-Figure 4The slider 37 is fixed with an induction sheet 373, and the motor seat 34 is provided with an origin sensor 341. Specifically, the origin sensor 341 is installed on the top motor seat through a sensor fixing member 342; the origin sensor 341 is used to detect the position of the induction sheet 373, and then detect the position of the slider. The position of the induction sheet 373 is detected in real time by the origin sensor 341 to facilitate the position of the slider 37. When the slider slides to a specified position, the origin sensor 341 sends a signal to stop the motor 35, so that the clamping mechanism 2 firmly clamps or releases the positive and negative pins of the DC power supply.

[0057] The above-mentioned embodiments only express several implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, and the present invention is also intended to include these modifications and modifications.

Claims

1. A three-temperature test fixture for a DC power supply, characterized in that: It includes a fixing seat, a clamping mechanism and a driving mechanism; The fixing seat is provided with an electrical connector group, and the electrical connector group is used to connect an external test device; The clamping mechanism comprises a first push block, a first clip probe, a second push block, a third push block, a second clip probe, and a fourth push block; the first clip probe comprises a first clip and a second clip arranged at intervals, and a first pin accommodating area is provided between the first clip and the second clip; the first push block and the second push block are respectively arranged on the outside of the first clip and the second clip, and are respectively in contact with the first clip and the second clip; The second clip probe comprises a third clip and a fourth clip arranged at intervals, wherein a second pin accommodating area is provided between the third clip and the fourth clip; the third push block and the fourth push block are respectively arranged on the outer sides of the third clip and the fourth clip, and respectively abut against the third clip and the fourth clip; the first clip, the second clip, the third clip and the fourth clip are respectively electrically connected to the electrical connector group; The driving mechanism is wedge-matched with the first push block, the second push block, the third push block, and the fourth push block respectively. The driving mechanism can drive the first push block and the second push block to move closer to or farther away from each other, and drive the third push block and the fourth push block to move closer to or farther away from each other, thereby making the first clamp and the second clamp move closer to or farther away from each other, and the third clamp and the fourth clamp move closer to or farther away from each other.

2. The three-temperature test fixture of a DC power supply according to claim 1, characterized in that: It also includes a temperature measurement module, which includes a temperature sensor. The temperature sensor is used to detect the temperature of the DC power supply; the temperature sensor is electrically connected to the electrical connector group.

3. The three-temperature test fixture of a DC power supply according to claim 2, characterized in that: The driving mechanism includes a driving assembly and a first push rod, a second push rod, and a third push rod that are sequentially arranged at intervals, and the driving assembly can drive the first push rod, the second push rod, and the third push rod to reciprocate along their length directions respectively; the first push block, the first clip probe, and the second push block are sequentially arranged between the first push rod and the second push rod, the first push block is wedge-fitted with the first push rod, and the second push block is wedge-fitted with the second push rod; the third push block, the second clip probe, and the fourth push block are sequentially arranged between the second push rod and the third push rod, the third push block is wedge-fitted with the second push rod, and the fourth push block is wedge-fitted with the third push rod.

4. The three-temperature test fixture of a DC power supply according to claim 3, characterized in that: The 3rd side of the second cam is connected with the support frame of the first end face and the support frame of the second end face has the first end face and the second end face has a spacer, and the 3rd side of the second cam is connected with the support frame of the second end face. The second through hole of the first clamp; the first pushing block, the first clip probe, and the second pushing block are arranged in the first accommodating groove, wherein one end of the first clamp and one end of the second clamp are respectively inserted into the fixing seat, and are electrically connected to the electrical connector group through a wire, and the other end of the first clamp and the other end of the second clamp are respectively extended into the first through hole, and the first pin accommodating area is formed between the other end of the first clamp and the other end of the second clamp; the third pushing block, the second clip probe, and the fourth pushing block are arranged in the second accommodating groove, wherein one end of the third clamp and one end of the fourth clamp are respectively inserted into the fixing seat, and are electrically connected to the electrical connector group through a wire, and the other end of the third clamp and the other end of the fourth clamp are respectively extended into the second through hole, and the second pin accommodating area is formed between the other end of the third clamp and the other end of the fourth clamp.

5. The three-temperature test fixture of a DC power supply according to claim 4, characterized in that: The clamping mechanism also includes a first elastic member arranged between the other end of the first push rod and the end wall of the first push rod slide groove, a second elastic member arranged between the other end of the second push rod and the end wall of the second push rod slide groove, and a third elastic member arranged between the other end of the third push rod and the end wall of the third push rod slide groove.

6. The three-temperature test fixture of a DC power supply according to claim 4 or 5, characterized in that: A first pressure plate groove is provided on at least one side of the first accommodating groove, and a second pressure plate groove is provided on at least one side of the second accommodating groove, and the clamping mechanism also includes a first pressure plate, a second pressure plate, a fourth elastic member, a fifth elastic member, a sixth elastic member, and a seventh elastic member; the first pressure plate is fixedly installed in the first pressure plate groove and is located between the first push block and the second push block; the fourth elastic member is clamped between the first push block and the first pressure plate, and the fifth elastic member is clamped between the first pressure plate and the second push block; the second pressure plate is fixedly installed in the second pressure plate groove and is located between the third push block and the fourth push block; the sixth elastic member is clamped between the third push block and the second pressure plate, and the seventh elastic member is clamped between the second pressure plate and the fourth push block.

7. The three-temperature test fixture for a DC power supply according to claim 6, characterized in that: The temperature measuring module also includes a limit sleeve and an eighth elastic member; the first pressing plate or the second pressing plate is provided with a temperature sensor accommodating portion, a temperature sensor accommodating cavity is provided inside the temperature sensor accommodating portion, a temperature sensor through hole is provided on the temperature sensor accommodating portion, and the temperature sensor through hole is connected to the temperature sensor accommodating cavity and the first through hole or the second through hole; the temperature sensor is arranged in the temperature sensor accommodating cavity, one end of the temperature sensor is connected to the electrical connector group through a wire, and the other end passes through the temperature sensor through hole and extends into the first through hole or the second through hole; the limit sleeve and the eighth elastic member are arranged in the temperature sensor accommodating cavity, the limit sleeve is fixedly sleeved on the temperature sensor and abuts against the inner side wall of the temperature sensor through hole; the eighth elastic member is sleeved on the temperature sensor and abuts against the limit sleeve and the end wall of the temperature sensor accommodating cavity respectively.

8. The three-temperature test fixture for a DC power supply according to claim 3, characterized in that: The first clip, the second clip, the third clip and the fourth clip all have elastic deformation capabilities; the first push block is provided with a first elastic telescopic top block, and the first elastic telescopic top block abuts against the first clip; the second push block is provided with a second elastic telescopic top block, and the second elastic telescopic top block abuts against the second clip; the third push block is provided with a third elastic telescopic top block, and the third elastic telescopic top block abuts against the third clip; the fourth push block is provided with a fourth elastic telescopic top block, and the fourth elastic telescopic top block abuts against the fourth clip.

9. The three-temperature test fixture of a DC power supply according to claim 3, characterized in that: The driving assembly includes a motor seat, a motor, a gear, a slider, a slider guide sleeve, a fourth push rod, and a push plate; the motor is fixed on the motor seat; the gear sleeve is arranged on the output shaft of the motor, the slider is slidably arranged on the slider guide sleeve, the slider is provided with a meshing portion, and the gear is engaged with the meshing portion; one end of the fourth push rod is fixedly connected to the slider, and the other end is fixedly connected to the push plate; one end of the first push rod, one end of the second push rod, and one end of the third push rod are fixedly connected to the push plate in sequence and at intervals.

10. The three-temperature test fixture of a DC power supply according to claim 4, characterized in that: The fixing seat is a square box-shaped structure, including a positioning fixing plate, a jig connecting plate, and a sealing plate; the jig connecting plate is a square frame structure with two sides open, the positioning fixing plate cover is arranged on one side of the jig connecting plate, and the electrical connector group is arranged on the outside of the positioning fixing plate; the sealing plate cover is arranged on the other side of the jig connecting plate; the fixing plate is arranged on the outside of the sealing plate.

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