Quick-release connecting rod

Abstract

The utility model discloses a quick-release connecting rod, which relates to the technical field of clamp equipment, and particularly comprises a second connecting rod, the end position of the second connecting rod is provided with a frustum perpendicular to the length direction of the second connecting rod, and the frustum is internally and coaxially provided with a through second assembly hole; the end position of the first connecting rod is provided with a first assembling hole in the direction perpendicular to the length direction of the first connecting rod, and the frustum can be inserted into the first assembling hole; a third assembly hole is formed in the surface of the threaded plate, and the threaded plate is hinged to the end of the first connecting rod and used for clamping the end of the second connecting rod between the end of the first connecting rod and the threaded plate; according to the quick-release connecting rod, the ends of the two groups of connecting rods respectively connected with the battery cell and the test equipment are redesigned, and the two groups of connecting rods are connected by adopting the screw rods vertical to the two groups of connecting rods, so that the two groups of connecting rods are quickly and stably connected, and the influence on the battery cell and the test equipment in the disassembly and assembly process is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of clamp equipment, and more specifically to a quick-release connecting rod. Background Art

[0002] When conducting a battery cell test, it is usually necessary to fix the battery cell and the test equipment. In existing tests, most of the battery cells and the test equipment are connected using fixed screws. When a fire or other dangerous situation occurs in the sample to be tested, the test equipment cannot be removed in time, which may easily cause damage to the test equipment.

[0003] At the same time, when connecting the battery cells, in order to ensure the stability of the connection, the torque of the bolts is usually increased, resulting in excessive pre-tightening force of the battery cells, which is not conducive to simulating the actual working conditions of the battery cells and reduces the effectiveness of the test results;

[0004] Moreover, when operators disassemble the samples after the test, it is inevitable that additional forces will be applied, which will destroy the original test results, such as increasing the degree of damage to the samples. In severe cases, it may cause leakage of the samples, which will cause harm to the operators and pose certain safety hazards.

[0005] In summary, how to provide a quick-release connecting rod that can solve the problems in existing tests, such as slow cell disassembly and assembly speed, difficult to control preload force, and influence on cell shape during disassembly, is an urgent problem to be solved by those skilled in the art. Utility Model Content

[0006] In view of this, the purpose of the utility model is to provide a quick-release connecting rod, by redesigning the two groups of connecting rod ends respectively connected to the battery cell and the test equipment, and connecting the two groups of connecting rods with screws perpendicular to the two groups of connecting rods, so as to achieve a quick and stable connection of the two groups of connecting rods, and effectively reduce the impact on the battery cell and the test equipment during the disassembly and assembly process.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A quick-release connecting rod, comprising:

[0009] A second connecting rod, the end of which is provided with a frustum perpendicular to the length direction of the second connecting rod, and a second assembly hole is coaxially provided in the frustum;

[0010] A first connecting rod, an end of which is perpendicular to the length direction of the first connecting rod and is provided with a first assembly hole for inserting the frustum;

[0011] A threaded plate, with a third assembly hole on its surface, the threaded plate being hinged to the end of the first connecting rod and used for clamping the end of the second connecting rod between the end of the first connecting rod and the threaded plate;

[0012] A screw rod passes through the first assembly hole, the second assembly hole and the third assembly hole in sequence, and is connected to the third assembly hole through threads.

[0013] Preferably, a motor slide rail housing is fixedly disposed in the first connecting rod, a motor is slidably disposed in the motor slide rail housing, an output shaft of the motor is coaxially fixedly connected to the screw rod, and a relative sliding direction between the motor and the motor slide rail housing is consistent with the axial direction of the screw rod.

[0014] Preferably, a slot hole is provided on an end surface of the screw rod close to the end of the first connecting rod, and a slot head capable of being fixedly engaged in the slot hole is provided on the end of the output shaft of the motor.

[0015] Preferably, the first assembly hole is a variable diameter hole, the end away from the frustum is a cylindrical through hole, the end assembled with the frustum is a conical hole, and the screw rod and the cylindrical through hole are clearance fit or transition fit.

[0016] Preferably, the first assembly hole is a variable diameter hole, the end away from the frustum is a threaded through hole, the end assembled with the frustum is a conical hole, and the screw rod is connected to the threaded through hole by threads.

[0017] Preferably, the second assembly hole is a cylindrical through hole, and the screw rod and the cylindrical through hole are clearance fit or transition fit.

[0018] Preferably, the second assembly hole is a threaded through hole, and the screw rod is connected to the threaded through hole via threads.

[0019] Preferably, the second assembly hole is a tapered hole, and the inner diameter of one end close to the threaded plate is smaller than the inner diameter of the other end, and the portion of the screw rod inserted into the second assembly hole is a tapered column.

[0020] Preferably, the first assembly hole and the second assembly hole are connected tapered holes, and the portion of the screw rod inserted into the first assembly hole and the second assembly hole is a tapered column.

[0021] Preferably, the frustum is a quadrangular prism frustum.

[0022] Compared with the prior art, the quick-release connecting rod provided by the utility model has at least the following beneficial effects:

[0023] 1. A stud perpendicular to the first connecting rod and the second connecting rod is used to connect the two, that is, the torque applied to the stud is independent of the change in the axial length of the first connecting rod and the second connecting rod, that is, the impact on the battery cell during the disassembly and assembly process is further reduced to avoid secondary damage to the battery cell;

[0024] 2. The first connecting rod and the second connecting rod end are positioned in the form of a frustum. Since the frustum has good coaxiality during assembly, the consistency of the total length of the first connecting rod and the second connecting rod after multiple assemblies can be effectively ensured;

[0025] 3. The stud is used to penetrate the first assembly hole and the second assembly hole in the vertical direction, so that the stud bears radial shear force, and the insertion stroke is short, which is conducive to rapid disassembly and assembly;

[0026] 4. Use quick-release connecting rods to connect the battery cells and test equipment to solve the problem of excessive or insufficient preload force on the battery cells caused by the difficulty in controlling the torque of traditional bolt connections. This ensures that the test environment of the battery cells is close to the actual working conditions and improves the validity of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0028] Figure 1 This is a schematic diagram of the structure of a specific quick-release connecting rod provided by the utility model;

[0029] Figure 2 This is a structural schematic diagram of another installation method of a specific quick-release connecting rod provided by the utility model;

[0030] Figure 3 This is an exploded schematic diagram of the parts of a specific quick-release connecting rod provided by the utility model;

[0031] Figure 4 This is a schematic structural diagram of a specific second connecting rod provided by the utility model;

[0032] FIG5 is a cross-sectional schematic diagram of a specific embodiment 1 provided by the present utility model;

[0033] FIG6 is a cross-sectional schematic diagram of a second specific embodiment provided by the present utility model;

[0034] FIG7 is a cross-sectional schematic diagram of a specific embodiment 3 provided by the present utility model;

[0035] FIG8 is a cross-sectional schematic diagram of a fourth specific embodiment provided by the present utility model.

[0036] Figure 1 - In Figure 8:

[0037] 1. First connecting rod; 101. First assembly hole; 2. Second connecting rod; 201. Cone; 202. Second assembly hole; 3. Threaded plate; 301. Third assembly hole; 4. Screw; 5. Motor; 6. Motor slide rail housing. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] The core of the utility model is to provide a quick-release connecting rod. By redesigning the two groups of connecting rod ends respectively connected to the battery cell and the test equipment, the two groups of connecting rods are connected by screws perpendicular to the two groups of connecting rods, so as to achieve a quick and stable connection of the two groups of connecting rods, and effectively reduce the impact on the battery cell and the test equipment during the disassembly and assembly process.

[0040] Please refer to Figure 1 - Figure 8, a quick-release connecting rod, comprising:

[0041] The second connecting rod 2 has a frustum 201 at its end perpendicular to the length direction of the second connecting rod 2, and a second assembly hole 202 is coaxially provided in the frustum 201;

[0042] The first connecting rod 1 has an end perpendicular to the length direction of the first connecting rod 1 and provided with a first assembly hole 101 for inserting the frustum 201;

[0043] The threaded plate 3 has a third assembly hole 301 on its surface. The threaded plate 3 is hinged to the end of the first connecting rod 1 and is used to clamp the end of the second connecting rod 2 between the end of the first connecting rod 1 and the threaded plate 3.

[0044] The screw rod 4 passes through the first assembly hole 101, the second assembly hole 202 and the third assembly hole 301 in sequence, and is connected to the third assembly hole 301 by a thread;

[0045] When conducting a cell test, first, the first connecting rod 1 is fixedly connected to the test equipment, and the second connecting rod 2 is fixedly connected to the fixture of the cell. When assembling the cell, the first connecting rod 1 and the second connecting rod 2 are kept coaxial, and the first assembly hole 101 and the second assembly hole 202 are made coaxial, and then the screw 4 is inserted into the first assembly hole 101 and the second assembly hole 202 to limit the axial relative position of the two, that is, to limit the length direction of the first connecting rod 1 and the second connecting rod 2;

[0046] When performing some torque test experiments, the axes of the first connecting rod 1 and the second connecting rod 2 may be at a certain angle, such as being perpendicular to each other. During the process, the axes of the first assembly hole 101 and the second assembly hole 202 must be overlapped to facilitate assembly of the screw rod 4.

[0047] When assembling the screw rod 4, it should be noted that the bottom end of the screw rod 4 is threadedly connected with the third assembly hole 301 of the threaded plate 3. Since the threaded plate 3 and the first connecting rod 1 are hinged, the screw rod 4 and the threaded plate 3 have a relatively stable relative position relationship with the first connecting rod 1 after the threaded connection is completed, that is, they are not easy to fall off.

[0048] In some embodiments, a stud is directly inserted through the first assembly hole 101 and the second assembly hole 202, and then a nut is used to lock the end of the stud to prevent the stud from being separated from the first connecting rod 1;

[0049] At the same time, the end of the second connecting rod 2 adopts the structural design of a cone 201, and a conical hole for inserting the cone 201 is set in the first assembly hole 101. The cone 201 is used for insertion positioning, which can quickly ensure the coaxiality of the first assembly hole 101 and the second assembly hole 202, facilitate the insertion of the screw 4, and ensure the consistency of the relative positions of the first connecting rod 1 and the second connecting rod 2 after each assembly.

[0050] In some embodiments, Figure 1 and Figure 2 As shown, a motor slide rail housing 6 is fixedly disposed in the first connecting rod 1, a motor 5 is slidably disposed in the motor slide rail housing 6, an output shaft of the motor 5 is coaxially fixedly connected with the screw rod 4, and a relative sliding direction between the motor 5 and the motor slide rail housing 6 is consistent with the axial direction of the screw rod 4;

[0051] The motor 5 is used to drive the screw 4 to achieve quick connection and disassembly between the screw 4 and the inner thread of the third assembly hole 301, thereby improving the disassembly and assembly efficiency. At the same time, the end size of the motor 5 is larger than the inner diameter of the first assembly hole 101, which serves as an axial limit for the screw 4. At the same time, the motor slide rail housing 6 is added, which, on the one hand, protects the motor 5, and on the other hand, a track for the sliding installation of the power supply machine 5 is provided on the surface of the motor slide rail housing 6, and the direction of the track is consistent with the axial direction of the screw 4, that is, the motor slide rail housing 6 guides the movement direction of the motor 5 to ensure the straightness of the screw 4 during axial movement.

[0052] In some embodiments, a slot is provided on one end surface of the screw rod 4 close to the end of the first connecting rod 1, and a slot head is provided on the end of the output shaft of the motor 5 that can be fixedly engaged in the slot;

[0053] The structural design in which the motor 5 and the screw 4 are separated is adopted, which is convenient for processing the screw 4 and installing the screw 4 and the motor 5, and is convenient for replacement and maintenance after the screw 4 is worn.

[0054] In some embodiments, Figure 3 , Figure 4 As shown in FIG. 7 , the first assembly hole 101 is a variable diameter hole, the end away from the frustum 201 is a cylindrical through hole, the end assembled with the frustum 201 is a tapered hole, and the screw 4 and the cylindrical through hole are clearance fit or transition fit;

[0055] The first assembly hole 101 adopts a variable diameter hole structure design, and the part connecting with the frustum 201 adopts a tapered hole. When the frustum 201 is inserted, the two can quickly complete the overlap of the axis, and through the action of the screw 4, the two can maintain good coaxiality.

[0056] In some embodiments, the first assembly hole 101 is a variable diameter hole, the end away from the frustum 201 is a threaded through hole, the end assembled with the frustum 201 is a tapered hole, and the screw rod 4 is connected to the threaded through hole by threads;

[0057] By changing the cylindrical through hole portion of the first assembly hole 101 into a threaded through hole, the screw rod 4 is connected to the first assembly hole 101 and the third assembly hole 301 through threads at the same time. During the design, the internal threads of the first assembly hole 101 and the third assembly hole 301 adopt the same pitch to ensure that the conical surface of the cone 201 is in close contact with the conical surface of the conical hole.

[0058] In some embodiments, Figure 3 , Figure 4 As shown in FIG. 7 , the second assembly hole 202 is a cylindrical through hole, and the screw rod 4 and the cylindrical through hole are clearance fit or transition fit;

[0059] The first assembly hole 101 and the second assembly hole 202 are both cylindrical through holes with equal diameters, so that the screw rod 4 can pass through quickly and be threadedly connected to the third assembly hole 301 to achieve quick release.

[0060] In some embodiments, as shown in FIG5 , the second assembly hole 202 is a threaded through hole, and the screw rod 4 is connected to the threaded through hole by threads;

[0061] The second assembly hole 202 and the third assembly hole 301 are threaded holes with the same pitch. When the screw rod 4 penetrates, it is connected to the second assembly hole 202 and the third assembly hole 301 through the thread, thereby ensuring the stability of the connection.

[0062] In some embodiments, Figure 4As shown in FIG8 , the second assembly hole 202 is a tapered hole, and the inner diameter of one end close to the threaded plate 3 is smaller than the inner diameter of the other end, and the portion of the screw rod 4 inserted into the second assembly hole 202 is a tapered column;

[0063] The second assembly hole 202 is a conical hole, and the inclination direction of its generatrix is ​​opposite to the inclination direction of the generatrix of the frustum 201. When the frustum 201 is inserted into the first assembly hole 101, the conical surface acts to ensure the coaxiality of the frustum 201 and the first assembly hole 101. When the screw 4 is inserted into the second assembly hole 202, the conical surface acts to ensure the coaxiality of the screw 4 and the second assembly hole 202.

[0064] In some embodiments, Figure 3 , Figure 4 As shown in FIG. 6 , the first assembly hole 101 and the second assembly hole 202 are connected tapered holes, and the portion of the screw 4 inserted into the first assembly hole 101 and the second assembly hole 202 is a tapered column;

[0065] A frustoconical screw rod 4 is inserted into the first assembly hole 101 and the second assembly hole 202 at the same time to ensure the coaxiality of the screw rod 4, the first assembly hole 101 and the second assembly hole 202. The upper end of the first assembly hole 101 has a larger hole diameter to facilitate the insertion of the screw rod 4.

[0066] In some embodiments, Figure 3 and Figure 4 As shown, the frustum 201 is a quadrangular prism frustum; in some embodiments, the frustum 201 is set to be a triangular prism frustum, a pentagonal prism or a hexagonal prism frustum to ensure that after the frustum 201 is inserted into the first assembly hole 101, the two will not rotate relative to each other along the axis of the frustum 201, that is, when the connection between the first connecting rod 1 and the second connecting rod 2 is subjected to torsional force, the angle between the two will not change.

[0067] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0068] The quick-release connecting rod provided by the utility model is introduced in detail above. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiment is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A quick-release connecting rod, characterized in that: include: A second connecting rod (2), the end of which is provided with a frustum (201) perpendicular to the length direction of the second connecting rod (2), and a second assembly hole (202) penetrating therein is coaxially provided in the frustum (201); A first connecting rod (1), the end of which is perpendicular to the length direction of the first connecting rod (1) and is provided with a first assembly hole (101) for inserting the frustum (201); a threaded plate (3) having a third assembly hole (301) provided on its surface, the threaded plate (3) being hinged to the end of the first connecting rod (1) and used for clamping the end of the second connecting rod (2) between the end of the first connecting rod (1) and the threaded plate (3); The screw rod (4) passes through the first assembly hole (101), the second assembly hole (202) and the third assembly hole (301) in sequence, and is connected to the third assembly hole (301) via a threaded connection.

2. The quick-release connecting rod according to claim 1, characterized in that: A motor slide rail housing (6) is fixedly disposed inside the first connecting rod (1), a motor (5) is slidably disposed inside the motor slide rail housing (6), an output shaft of the motor (5) is coaxially fixedly connected to the screw rod (4), and a relative sliding direction between the motor (5) and the motor slide rail housing (6) is consistent with an axial direction of the screw rod (4).

3. The quick-release connecting rod according to claim 2, characterized in that: A slot hole is provided on an end surface of the screw rod (4) close to the end of the first connecting rod (1), and a slot head capable of being fixedly engaged in the slot hole is provided on the end of the output shaft of the motor (5).

4. The quick-release connecting rod according to claim 1, characterized in that: The first assembly hole (101) is a variable diameter hole, the end away from the frustum (201) is a cylindrical through hole, the end assembled with the frustum (201) is a conical hole, and the screw rod (4) and the cylindrical through hole are clearance fit or transition fit.

5. The quick-release connecting rod according to claim 1, characterized in that: The first assembly hole (101) is a variable diameter hole, the end away from the frustum (201) is a threaded through hole, the end assembled with the frustum (201) is a conical hole, and the screw rod (4) is connected to the threaded through hole via threads.

6. The quick-release connecting rod according to claim 1, characterized in that: The second assembly hole (202) is a cylindrical through hole, and the screw rod (4) and the cylindrical through hole are clearance fit or transition fit.

7. The quick-release connecting rod according to claim 1, characterized in that: The second assembly hole (202) is a threaded through hole, and the screw rod (4) is connected to the threaded through hole via threads.

8. The quick-release connecting rod according to claim 1, characterized in that: The second assembly hole (202) is a tapered hole, and the inner diameter of one end close to the threaded plate (3) is smaller than the inner diameter of the other end; the portion of the screw rod (4) inserted into the second assembly hole (202) is a tapered column.

9. The quick-release connecting rod according to claim 1, characterized in that: The first assembly hole (101) and the second assembly hole (202) are connected tapered holes, and the portion of the screw rod (4) inserted into the first assembly hole (101) and the second assembly hole (202) is a tapered column.

10. The quick-release connecting rod according to any one of claims 1 to 9, characterized in that: The frustum (201) is a quadrangular prism frustum.

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