Connector and unmanned aerial vehicle

Abstract

The utility model discloses a connector and an unmanned aerial vehicle, and the connector comprises a housing which is provided with a mounting cavity; the plurality of contact pieces are arranged in the mounting cavity; the heat dissipation sleeve is mounted in the mounting cavity, and the heat dissipation sleeve is provided with a heat dissipation cavity; at least part of the contact pieces are installed in the heat dissipation cavity, and the contact pieces arranged in the heat dissipation cavity make contact with the wall face of the heat dissipation cavity so that heat exchange can be conducted between the contact pieces and the heat dissipation sleeve. The contact piece is arranged in the heat dissipation sleeve and is in direct contact with the heat dissipation sleeve, and heat generated by the contact piece can be quickly conducted to the heat dissipation sleeve and dissipated outwards during working, so that the effect of effectively accelerating the heat dissipation efficiency of the contact piece is achieved, the use temperature of the connector is effectively reduced, and the risk that the service life of the connector is shortened due to the over-high temperature is reduced.

Description

Technical Field

[0001] This application relates to the technical field of electrical connectors, and in particular, to a connector and a drone. Background Art

[0002] Connectors are used in many electrical devices to connect two or more components to achieve the transmission of electrical energy and signals. For example, existing devices such as drones and vehicles are equipped with independent batteries, and connectors are required to connect the batteries to the electronic control boards. Some of the batteries of these devices are generally set to be detachable, and a device is equipped with multiple sets of replaceable batteries, which facilitates users to remove the depleted batteries for charging and install fully charged batteries to ensure the continuous operation of the device. For example, in existing drones, to avoid excessive battery weight affecting the payload of the drone, the battery capacity is usually limited to a small range. A low-capacity battery means a short endurance time. Therefore, existing drones usually adopt the method of battery rotation to achieve continuous operation. Therefore, the battery connectors of current drones have the characteristic of a large number of plugging and unplugging times. After being used for a certain period of time, it is easy to cause an increase in the contact resistance of the connector due to the large number of plugging and unplugging times. Coupled with the vibration during the operation of the drone, the actual contact resistance is larger than when it is stationary. Considering the large overcurrent of the battery connector itself, it is easy to cause the temperature of the connector to be too high during use, thereby shortening the service life. Summary of the Utility Model

[0003] The purpose of the embodiments of the present utility model is to provide a connector and a drone, which can solve the above problems existing in the prior art.

[0004] To achieve the above object, the present application adopts the following technical solutions:

[0005] On the one hand, a connector is provided, including:

[0006] A housing having an installation cavity;

[0007] A plurality of contact pieces disposed inside the installation cavity;

[0008] A heat dissipation sleeve installed in the installation cavity, the heat dissipation sleeve having a heat dissipation cavity;

[0009] At least a part of the contact pieces is installed in the heat dissipation cavity, and the contact pieces disposed inside the heat dissipation cavity are in contact with the wall surface of the heat dissipation cavity to perform heat exchange with the heat dissipation sleeve.

[0010] Optionally, the heat dissipation sleeve includes an outer frame and a partition disposed inside the outer frame. The partition divides the internal space of the outer frame into two or more heat dissipation cavities, and the contact pieces are dispersedly installed in each heat dissipation cavity.

[0011] Optionally, the partition divides the inner space of the outer frame into the heat dissipation cavities corresponding to the number of the contact pieces, and each contact piece is correspondingly installed in one of the heat dissipation cavities.

[0012] Optionally, the heat dissipation cavity is a through cavity that penetrates the heat dissipation sleeve along the insertion and extraction direction.

[0013] Optionally, the contact piece includes a supporting leg and a contact piece connected to each other. The supporting leg is clamped and fixed with the heat dissipation sleeve, and the contact piece is used for contacting with other connectors that are inserted into each other.

[0014] Optionally, the supporting leg is provided with an elastic clamping portion, and the heat dissipation sleeve is provided with a first positioning groove located on the side wall of the heat dissipation cavity. At least part of the elastic clamping portion extends into the first positioning groove, so that the contact piece is fixedly clamped with the heat dissipation cavity.

[0015] Optionally, a tail limiting block protrudes from a side of the supporting leg away from the contact piece, and the tail limiting block abuts against an end of the heat dissipation sleeve away from the contact piece. The common cooperation of the tail limiting block and the elastic clamping portion restricts the movement of the contact piece relative to the heat dissipation sleeve along the insertion and extraction direction.

[0016] Optionally, an avoidance groove is provided at an end of the heat dissipation sleeve away from the contact piece, and the tail limiting block is snapped into the avoidance groove, so that an end face of the supporting leg away from the contact piece is substantially flush with an end face of the heat dissipation sleeve.

[0017] Optionally, a limiting convex portion protruding from a side wall of the supporting leg relative to the contact piece is provided on a side portion of the supporting leg. The heat dissipation sleeve is provided with a first limiting sliding groove located on an inner side wall of the heat dissipation cavity and extending along the insertion and extraction direction. The cooperation of the first limiting sliding groove and the limiting convex portion restricts the movement of the contact piece relative to the heat dissipation sleeve along a direction perpendicular to the insertion and extraction direction.

[0018] Optionally, the limiting convex portions are provided on both opposite sides of the supporting leg.

[0019] Optionally, each contact piece includes two symmetrically arranged sub-pieces, and the elastic clamping portions are provided on both of the two sub-pieces, and the bending directions of the elastic clamping portions provided on the two sub-pieces are opposite; and / or,

[0020] The elastic clamping portion is provided on a side portion of the supporting leg, and a space is formed between the elastic clamping portion and the supporting leg and extends towards the end of the supporting leg.

[0021] Optionally, the installation cavity includes a first installation cavity, and the heat dissipation sleeve can be inserted into the first installation cavity along the insertion and extraction direction; the housing is provided with a retaining protrusion on the inner wall of the first installation cavity, and the heat dissipation sleeve is provided with a second positioning groove on the side wall of the heat dissipation cavity. At least part of the retaining protrusion extends into the second positioning groove to limit the relative movement of the heat dissipation sleeve and the housing along the insertion and extraction direction; or,

[0022] The installation cavity includes a first installation cavity; the housing is provided with a retaining protrusion on the inner wall of the first installation cavity, and the heat dissipation sleeve is provided with a positioning opening on the side wall of the heat dissipation cavity. At least part of the retaining protrusion extends into the positioning opening to limit the relative movement of the heat dissipation sleeve and the housing along the insertion and extraction direction; the contact piece is provided with an elastic clamping portion, and at least part of the elastic clamping portion extends into the positioning opening to fixedly clamp the contact piece and the heat dissipation cavity.

[0023] Optionally, a guiding inclined surface is formed on one side of the retaining protrusion facing the insertion direction of the heat dissipation sleeve.

[0024] Optionally, the housing is provided with a plurality of limiting ribs arranged at intervals circumferentially around the inner wall of the first installation cavity. The limiting ribs extend along the insertion and extraction direction, and the outer periphery of the heat dissipation sleeve abuts against each of the limiting ribs respectively.

[0025] Optionally, the contact piece includes a supporting leg and a contact piece connected to each other. The supporting leg is provided with an elastic clamping portion. The installation cavity further includes a second installation cavity. Part of the contact piece is arranged in the second installation cavity. The elastic clamping portion of the contact piece arranged in the second installation cavity is clamped into the third positioning groove;

[0026] A tail limiting block protrudes from one side of the contact piece, and the tail limiting block abuts against the end of the housing. The common cooperation of the tail limiting block and the elastic clamping portion restricts the relative movement of the contact piece and the heat dissipation sleeve along the insertion and extraction direction.

[0027] Optionally, the inner wall of the second installation cavity is provided with a second limiting sliding groove extending along the insertion and extraction direction. Part of the supporting leg is located in the second limiting sliding groove, and the relative movement of the contact piece and the second installation cavity in the direction perpendicular to the insertion and extraction direction is restricted by the second limiting sliding groove.

[0028] Optionally, it further includes a conductive sheet, and the conductive sheet is arranged at one end of the heat dissipation sleeve close to the supporting leg. Both the contact piece and the heat dissipation sleeve are fixedly connected to the conductive sheet; or,

[0029] It further includes a circuit board, and the circuit board is arranged at one end of the heat dissipation sleeve close to the supporting leg. Both the contact piece and the heat dissipation sleeve are fixedly connected to the conductive sheet.

[0030] Optionally, the heat dissipation sleeve is made of copper, copper alloy, aluminum or aluminum alloy.

[0031] Optionally, the installation cavity includes a first installation cavity and a second installation cavity. The first installation cavity includes a positive electrode installation cavity and a negative electrode installation cavity, and the second installation cavity includes a signal electrode installation cavity.

[0032] The heat dissipation sleeve includes a positive electrode heat dissipation sleeve and a negative electrode heat dissipation sleeve. The contact piece includes a positive electrode contact piece and a negative electrode contact piece. The positive electrode heat dissipation sleeve is installed in the positive electrode installation cavity, and the positive electrode contact piece is installed on the positive electrode heat dissipation sleeve; the negative electrode heat dissipation sleeve is installed in the negative electrode installation cavity, and the negative electrode contact piece is installed on the negative electrode heat dissipation sleeve.

[0033] The contact piece includes a signal contact piece, and the signal contact piece is installed in the signal electrode installation cavity; the signal electrode installation cavity is located between the positive electrode installation cavity and the negative electrode installation cavity.

[0034] Optionally, there are multiple installation cavities, and an interval cavity is provided between two adjacent installation cavities. The interval cavity is a through cavity along the insertion direction.

[0035] Optionally, the connector is a female socket connector, and the contact piece is the female socket contact piece of the female socket connector for plugging with the male socket contact piece of the male socket connector. The female socket contact piece is completely installed in the installation cavity.

[0036] Optionally, the connector is a male socket connector, and the contact piece is the male socket contact piece of the male socket connector for plugging with the female socket contact piece of the female socket connector; part of the male socket contact piece is fixed in the installation cavity, and part extends out of the installation cavity.

[0037] On the other hand, a drone is provided, including a power module, and the power module includes the above-mentioned connector.

[0038] The beneficial effect of this application is that: the present utility model provides a connector and a drone. In the structure of this connector, a heat dissipation sleeve is arranged between the insulating housing and the contact piece. The contact piece is installed in the heat dissipation sleeve and is in direct contact with the heat dissipation sleeve. When working, the heat generated by the contact piece can be quickly conducted to the heat dissipation sleeve and dissipated outward, so as to effectively improve the heat dissipation efficiency of the contact piece, effectively reduce the use temperature of the connector, and reduce the risk of shortening the service life of the connector due to excessive temperature. Description of the Drawings

[0039] The following further elaborates on this application in detail according to the drawings and embodiments.

[0040] Figure 1 It is a schematic structural diagram of one perspective of the connector according to the embodiment of this application;

[0041] Figure 2 is Figure 1 an exploded view of the structure shown;

[0042] Figure 3 is a schematic structural view of another perspective of the connector according to the embodiment of the present application;

[0043] Figure 4 is Figure 3 an exploded view of the structure shown;

[0044] Figure 5 is a schematic structural view of one perspective of the heat dissipation sleeve and the contact piece combination according to the embodiment of the present application;

[0045] Figure 6 is a schematic structural view of another perspective of the heat dissipation sleeve and the contact piece combination according to the embodiment of the present application;

[0046] Figure 7 is Figure 6 a cross-sectional view of the structure shown;

[0047] Figure 8 is Figure 6 an exploded view of the structure shown;

[0048] Figure 9 is a schematic structural view of the heat dissipation sleeve according to the embodiment of the present application;

[0049] Figure 10 is a schematic structural view of the contact piece according to the embodiment of the present application;

[0050] Figure 11 is a schematic structural view of the connector during application according to the embodiment of the present application.

[0051] In the figure:

[0052] 1. Housing; 11. Installation cavity; 11a. Positive electrode installation cavity; 11b. Negative electrode installation cavity; 11c. Signal electrode installation cavity; 12. Grid strip; 13. Anti-detachment protrusion; 14. Limiting rib; 15. Positioning anti-fooling hole; 16. Second limiting chute; 17. Third positioning groove; 18. Spacing cavity; 2. Contact piece; 2a. Positive electrode contact piece; 2b. Negative electrode contact piece; 2c. Signal contact piece; 21. Contact piece; 22. Support leg; 221. Elastic clamping part; 222. Tail limiting block; 223. Limiting convex part; 3. Heat dissipation sleeve; 3a. Positive electrode heat dissipation sleeve; 3b. Negative electrode heat dissipation sleeve; 31. Heat dissipation cavity; 32. Outer frame; 33. Partition board; 34. First positioning groove; 35. First limiting chute; 36. Avoidance groove; 37. Second positioning groove; 10. Female seat; 40. Male seat; 41. Anti-fooling convex column. Detailed implementation manners

[0053] To make the technical problems solved by this application, the technical solutions adopted, and the achieved technical effects clearer, the technical solutions of the embodiments of this application will be further described in detail below. Obviously, the described embodiments are only part of the embodiments of this application, rather than all of them. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope protected by this application.

[0054] In the description of this application, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific situations.

[0055] In this application, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "above", and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath", and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the horizontal height of the first feature is less than that of the second feature.

[0056] Connectors are used in many electrical devices to connect two or more components to achieve the transmission of electrical energy and signals. For example, existing devices such as drones and vehicles are equipped with independent batteries, and connectors are required to connect the batteries and the electronic control boards. Among them, the batteries of some devices are generally set to be detachable, and a device is equipped with multiple sets of replaceable batteries, which is convenient for users to remove the depleted batteries for charging and install fully charged batteries to achieve the continuous operation of the device. For example, in existing drones, in order to avoid excessive battery weight affecting the load of the drone, the battery capacity can usually only be controlled within a small range, and a low-capacity battery means a short endurance time. Therefore, existing drones usually adopt the method of battery rotation to achieve continuous operation. Therefore, the current battery connectors of drones have the characteristic of a large number of plugging and unplugging times. After being used for a certain period of time, it is easy to cause the problem of an increase in the contact resistance of the connector due to the large number of plugging and unplugging times. Coupled with the vibration during the operation of the drone, the actual contact resistance during use is larger than that at rest. Combined with the large overcurrent of the battery connector itself, it is easy to cause the temperature of the connector to be too high during use, thereby shortening the service life.

[0057] In order to overcome the above technical problems, this embodiment provides a connector. By creatively improving the heat dissipation of the contact piece 2 in the connector, the heat dissipation efficiency is effectively improved, thereby effectively avoiding the problem of overheating of the connector during use. The connector of this embodiment can be applied to various circuit connection structures that require frequent plugging and unplugging, and can be, but not limited to, devices such as drones and unmanned vehicles.

[0058] Referring to Figure 1-11 , the connector of this embodiment includes a housing 1, a heat dissipation sleeve 3, and a plurality of contact pieces 2. The housing 1 has an installation cavity 11; the contact pieces 2 are arranged inside the installation cavity 11; the heat dissipation sleeve 3 is installed in the installation cavity 11, and the heat dissipation sleeve 3 has a heat dissipation cavity 31; at least part of the contact pieces 2 are installed in the heat dissipation cavity 31, and the contact pieces 2 arranged inside the heat dissipation cavity 31 are in contact with the wall surface of the heat dissipation cavity 31 to perform heat exchange with the heat dissipation sleeve 3.

[0059] Among them, the housing 1 is an insulating housing 1, which plays a role of supporting, fixing, and insulating protection for the contact piece 2 inside the connector. The contact piece 2 is a conductor structure capable of transmitting electric energy or electrical signals. The heat dissipation sleeve 3 preferably uses a metal or composite material with a higher thermal conductivity coefficient, which can effectively conduct and dissipate the heat generated by the contact piece 2 quickly. During installation, the heat dissipation sleeve 3 can be completely installed in the installation cavity 11 of the housing 1.

[0060] Among the plurality of contact pieces 2, according to the heat dissipation requirements, all the contact pieces 2 can be respectively installed in the heat dissipation sleeve 3, or only part of the contact pieces 2 can be installed in the heat dissipation sleeve 3. For example, the positive and negative contact pieces 2 for transmitting electric energy can be installed in the heat dissipation sleeve 3, while the contact pieces 2 for transmitting signals, due to less heat generation, can be directly installed in the installation cavity 11 of the housing 1.

[0061] When the structure of the connector of this embodiment is applied, it can be used as a female seat 10 or a male seat 40. When used as a female seat 10, the contact piece 2 is completely received in the heat dissipation cavity 31 of the heat dissipation sleeve 3. When used as a male seat 40, only a part of the contact piece 2 is received in the heat dissipation sleeve 3, and a part is reserved to extend for plugging into the female seat 10.

[0062] In the connector structure of this embodiment, a heat dissipation sleeve 3 is arranged between the insulating housing 1 and the contact piece 2. The contact piece 2 is installed in the heat dissipation sleeve 3 and is in direct contact with the heat dissipation sleeve 3. During operation, the heat generated by the contact piece 2 can be quickly conducted to the heat dissipation sleeve 3 and dissipated outward, thereby effectively accelerating the heat dissipation efficiency of the contact piece 2, effectively reducing the operating temperature of the connector, and reducing the risk of shortening the service life of the connector due to overheating.

[0063] In one embodiment, referring to Figure 9, the heat dissipation sleeve 3 includes an outer frame 32 and a partition 33 disposed within the outer frame 32. The partition 33 divides the internal space of the outer frame 32 into two or more heat dissipation chambers 31, and the contact pieces 2 are dispersedly installed in each of the heat dissipation chambers 31.

[0064] A partition 33 is provided in the heat dissipation sleeve 3 to divide it into at least two heat dissipation chambers 31. When installing a plurality of contact pieces 2 in the heat dissipation sleeve 3, the contact pieces 2 can be dispersedly installed in a plurality of heat dissipation chambers 31. In this way, the total contact area between all the contact pieces 2 and the heat dissipation sleeve 3 can be increased, thereby accelerating the heat transfer between the contact pieces 2 and the heat dissipation sleeve 3 and improving the heat dissipation efficiency. Specifically, a reasonable dispersed arrangement is made according to the number of contact pieces 2 installed in each heat dissipation sleeve 3 and the number of heat dissipation chambers 31 distributed in the heat dissipation sleeve 3. One contact piece 2 can be installed in one heat dissipation chamber 31, or multiple contact pieces 2 can be installed.

[0065] In one embodiment, the partition 33 divides the internal space of the outer frame 32 into heat dissipation chambers 31 corresponding to the number of the contact pieces 2, and each contact piece 2 is correspondingly installed in one heat dissipation chamber 31.

[0066] Each contact piece 2 can be independently installed in a heat dissipation chamber 31, so that the periphery of each contact piece 2 can contact the heat dissipation sleeve 3, ensuring that each contact piece 2 can obtain sufficient heat dissipation support, avoiding the mutual conduction and accumulation of heat between the contact pieces 2, and this structure can optimize the heat dissipation of the contact pieces 2 to the greatest extent.

[0067] In one embodiment, referring to Figure 8 , the heat dissipation chamber 31 is a through cavity that penetrates the heat dissipation sleeve 3 along the plugging and unplugging direction. In this way, when assembling the connector, the contact piece 2 can be inserted into the heat dissipation chamber 31 along the plugging and unplugging direction.

[0068] Specifically, in the connector structure, there is a fixed insertion and extraction direction during the docking and separation between the male connector 40 and the female connector 10, and the through direction of the heat dissipation cavity 31 is a direction parallel to the insertion and extraction direction. The heat dissipation cavity 31 is arranged as a through cavity structure, that is, both ends thereof are openings. Let the openings at both ends of the heat dissipation cavity 31 be the first opening and the second opening respectively. The external circuit can enter the heat dissipation cavity 31 through the first opening to be welded and connected to the contact piece 2, or the contact piece 2 can extend out of the heat dissipation cavity 31 through the first opening to be welded and connected to the external circuit; when it is set as the female connector 10, the contact piece 2 of the male connector 40 can be inserted from the second opening to achieve docking, and when it is set as the male connector 40, the contact piece 2 can extend out from the second opening to facilitate insertion into the female connector 10. Therefore, the heat dissipation cavity 31 in this solution is arranged as a through cavity structure, which can realize repeated contact between the periphery of the contact piece 2 and the heat dissipation sleeve 3 to ensure high heat dissipation efficiency, and does not affect the connection between the contact piece 2 and other circuit structures. In addition, the contact piece 2 can be inserted into the heat dissipation cavity 31 along the insertion and extraction direction, that is, the contact piece 2 can be inserted into the heat dissipation cavity 31 from the first opening or the second opening. The insertion installation method has the advantage of simple installation, and at the same time, it can ensure that the periphery of the contact piece 2 can effectively contact the heat dissipation sleeve 3 after insertion.

[0069] In one embodiment, referring to Figure 10 , the contact piece 2 includes a connected support leg 22 and a contact piece 21. The support leg 22 is snap-fitted and fixed to the heat dissipation sleeve 3, and the contact piece 21 is used for contacting with other connectors that are inserted into each other.

[0070] Among them, other connectors refer to the connectors that are inserted into this connector when using this connector. If this connector is a female connector, then other connectors are male connectors; if this connector is a male connector, then other connectors are female connectors, so as to realize the connection between the male connector and the female connector.

[0071] Specifically, the contact piece 21 is the part of the contact piece 2 used for contacting the contact piece 2 of another connector. It is preferably arranged as a spring piece structure, and can rely on the elastic force to realize mutual pressing with the contact piece 2 of another connector after insertion, so as to ensure good contact performance; the support leg 22 is the fixed part of the contact piece 2, and the reliability of its fixation determines the stability of the contact piece 2. In addition, the support leg 22 is usually also welded and connected to the external circuit, such as welded and connected to a wire, a copper sheet or a circuit board, to realize the effective transmission of electric energy or signals.

[0072] The support leg 22 is snap - fixed to the heat - dissipation sleeve 3. Specifically, a structure capable of snap - connection (generally including a snap - protrusion, a snap - groove, etc.) needs to be provided between the support leg 22 and the heat - dissipation sleeve 3. When the contact piece 2 is inserted into the heat - dissipation sleeve 3, after being inserted in place, the snap - connection between the support leg 22 and the heat - dissipation sleeve 3 is completed, and then the reliable fixation of the contact piece 2 is achieved. The snap - fixing method simplifies the installation process of the contact piece 2 and at the same time ensures the stability of the contact piece 2 within the heat - dissipation sleeve 3. Even when the connector is subjected to vibration or impact, the contact piece 2 can maintain its position unchanged, thus ensuring the reliability and stability of the connection. On the other hand, the support leg 22 and the heat - dissipation sleeve 3 are fixed by snap - connection, enabling close contact. Therefore, the heat generated by the contact piece 2 during operation can be quickly transferred to the heat - dissipation sleeve 3 through the support leg 22, and the heat - dissipation sleeve 3 utilizes its large heat - dissipation area and excellent heat - conduction performance to dissipate the heat into the environment, thus achieving an efficient heat - dissipation effect.

[0073] In one embodiment, referring to Figure 7 , the support leg 22 is provided with an elastic snap - connection portion 221, and a first positioning groove 34 is provided on the side wall of the heat - dissipation cavity 31 within the heat - dissipation sleeve 3. By at least part of the elastic snap - connection portion 221 extending into the first positioning groove 34, the contact piece 2 is fixedly snap - connected to the heat - dissipation cavity 31.

[0074] The elastic snap - connection portion 221 is a key part on the support leg 22. It has certain elasticity and deformation ability. During the process of inserting the contact piece 2 along the insertion and extraction direction into the heat - dissipation cavity 31, the elastic snap - connection portion 221 will be gradually compressed under the guiding action of the side wall of the heat - dissipation cavity 31. This compression process not only provides space for the smooth insertion of the contact piece 2 but also enables the elastic snap - connection portion 221 to store elastic potential energy. When the contact piece 2 is inserted into the heat - dissipation cavity 31 to the set position, the elastic snap - connection portion 221 reaches the position of the first positioning groove 34. Due to the loss of the limiting effect of the side wall, the elastic snap - connection portion 221 will quickly return to its original state and be clamped tightly within the first positioning groove 34. This clamping effect makes the contact piece 2 firmly fixed within the heat - dissipation sleeve 3 and not prone to loosening or falling off.

[0075] In this solution, the design of the elastic snap - connection portion 221 and the first positioning groove 34 makes the installation process of the contact piece 2 simple and fast. During assembly, only need to insert the contact piece 2 into the heat - dissipation cavity 31 along the insertion and extraction direction, and the installation can be completed without using additional tools or complex operation steps.

[0076] Among them, the contact piece 2 has a structure with good electrical conductivity and elasticity. During molding, the elastic snap - connection portion 221 can be directly formed by integral stamping on the contact piece 2. Integral stamping can ensure the firm connection between the elastic snap - connection portion 221 and the contact piece 2 body, avoiding possible loosening or misalignment problems during subsequent assembly. Optionally, the first positioning groove 34 provided within the heat - dissipation sleeve 3 can be a through - groove or a blind - groove.

[0077] In one embodiment, referring to Figure 7 , a tail limiting block 222 protrudes from a side of the support leg 22 away from the contact piece 21. The tail limiting block 222 abuts against one end of the heat dissipation sleeve 3 away from the contact piece 21. The relative movement of the contact piece 2 along the insertion and extraction direction with respect to the heat dissipation sleeve 3 is restricted by the combined cooperation of the tail limiting block 222 and the elastic clamping portion 221.

[0078] Specifically, a tail limiting block 222 is provided at the tail of the support leg 22 and cannot be inserted into the heat dissipation cavity 31. Therefore, when inserting, it can only be inserted into the heat dissipation cavity 31 with the contact piece 21 as the front end. Until the tail limiting block 222 abuts against the end face of the heat dissipation sleeve 3, the contact piece 2 cannot be inserted further. At this time, the elastic clamping portion 221 is exactly aligned with the first positioning groove 34 and elastically resets to abut against the side wall of the first positioning groove 34, realizing the restriction of the contact piece 2 from reversely disengaging from the heat dissipation sleeve 3. As Figure 2-Figure 8 shown, the tail limiting block 222 restricts the contact piece 2 from moving in the first direction, and the elastic clamping portion restricts the contact piece 2 from moving in the direction opposite to the first direction. The two cooperate to jointly restrict the movement of the contact piece 2 along the insertion and extraction direction, preventing the loosening between the contact piece 2 and the heat dissipation sleeve 3. This solution adopts the structure of the combined cooperation of the elastic clamping portion 221 and the tail limiting block 222 to effectively lock the installed contact piece 2, and has the advantages of simple installation and good reliability after installation.

[0079] In one embodiment, in combination with Figure 6 and Figure 9 , an avoidance groove 36 is provided at one end of the heat dissipation sleeve 3 away from the contact piece 21. The tail limiting block 222 is snapped into the avoidance groove 36, so that the end face of the support leg 22 away from the contact piece 21 is substantially flush with the end face of the heat dissipation sleeve 3.

[0080] Specifically, due to the provision of the avoidance groove 36, the tail limiting block 222 can be snapped into it during installation. After installation, the end face of the support leg 22 is flush with the end face of the heat dissipation sleeve 3. When welding and connecting the connector of this embodiment to an external circuit (such as a conductive sheet, a circuit board, etc.), the contact piece 2 and the heat dissipation sleeve 3 can be welded to the conductive sheet together. In addition to establishing the electrical connection between the contact piece 2 and the conductive sheet, it is also convenient for the contact piece 2 and the heat dissipation sleeve 3 to quickly conduct heat to the conductive sheet and dissipate it outward, further improving the heat dissipation efficiency.

[0081] In one embodiment, a limiting convex portion 223 protruding from the side wall of the support leg 22 relative to the side wall of the contact piece 21 is provided on the side of the support leg 22. The heat dissipation sleeve 3 is provided with a first limiting sliding groove 35 located on the inner side wall of the heat dissipation cavity 31 and extending along the insertion and extraction direction. The cooperation between the first limiting sliding groove 35 and the limiting convex portion 223 restricts the movement of the contact piece 2 relative to the heat dissipation sleeve 3 in a direction perpendicular to the insertion and extraction direction. When installing the contact piece, the limiting convex portion 223 can slide into the first limiting sliding groove 35 from the side end of the heat dissipation sleeve 3.

[0082] When installing the contact piece 2, by contacting the limiting convex portion 223 with the first limiting sliding groove 35, compared with the entire contact piece 2 contacting the inner wall of the heat dissipation sleeve 3, the contact between the limiting convex portion 223 and the first limiting sliding groove 35 is a small-area contact, which can more quickly extend and install the contact piece 2 into the heat dissipation sleeve 3, and the installation is convenient and fast.

[0083] Specifically, let the plane perpendicular to the insertion and extraction direction be the A plane. Then, under the cooperation of the limiting convex portion 223 and the first limiting sliding groove 35, the installed contact piece 2 cannot move in any direction within the A plane. That is, this solution enhances the lateral stability of the contact piece 2 within the heat dissipation sleeve 3, which helps to prevent the contact piece 2 from shifting or loosening when subjected to an external force.

[0084] Importantly, there is a contact piece 21 in the structure of the contact piece 2. After installation, it is necessary to ensure that there is enough space between the contact piece 21 and the inner wall of the heat dissipation cavity 31 for the elastic movement of the contact piece 21. The limiting convex portion 223 is provided on the side of the support leg 22 of this solution and is snapped into the first limiting sliding groove 35. The first limiting sliding groove 35 can be specifically arranged in the middle of the heat dissipation cavity 31, so that enough space can be reserved between the installed contact piece 2 and the inner wall of the heat dissipation cavity 31 for the movement of the contact piece 21.

[0085] In one embodiment, the limiting convex portions 223 are provided on both opposite sides of the support leg 22.

[0086] By providing the limiting convex portions 223 on both opposite sides of the support leg 22, the contact piece 2 is guaranteed double limiting within the heat dissipation sleeve 3. The two limiting convex portions 223 can respectively limit the contact piece 2 from both sides, effectively preventing the lateral movement of the contact piece 2.

[0087] In one embodiment, each contact piece 2 includes two symmetrically arranged sub-pieces, and the elastic clamping portions 221 are provided on both of the two sub-pieces, and the bending directions of the elastic clamping portions 221 provided on the two sub-pieces are opposite.

[0088] Specifically, this structure is applied to the female socket 10. The support feet 22 of the two sub - pieces are welded and connected, and a contact space is formed between the elastic clamping portions 221 of the two sub - pieces. During docking, the contact piece 2 of the male socket 40 can be inserted between the two sub - pieces to form good contact. This double - sided contact structure can effectively increase the contact area, improve the current - carrying capacity, and reduce the resistance. Elastic clamping portions 221 with opposite bending directions are respectively arranged on the two sub - pieces, which can increase the number of contact points between the elastic clamping portions 221 on the entire contact piece 2 and the heat - dissipation sleeve 3, effectively improving the installation stability of the contact piece 2.

[0089] In one embodiment, the elastic clamping portion 221 is arranged on the side of the support foot 22. An interval is formed between the elastic clamping portion 221 and the support foot 22, and it extends towards the end of the support foot 22.

[0090] The limiting convex portion 223 is located on the side of the support foot 22. By arranging the elastic clamping portion 221 thereon, it is easier to form a clamping connection with the first positioning groove 34 on the inner wall of the heat - dissipation cavity 31. During specific implementation, an L - shaped groove can be directly opened on the limiting portion to form the elastic clamping portion 221. Obviously, this structure has the advantage of simple processing.

[0091] In one embodiment, referring to Figure 4 , the installation cavity 11 includes a first installation cavity. The heat - dissipation sleeve 3 can be inserted into the first installation cavity along the plug - in and unplugging direction; the housing 1 is provided with a retaining protrusion 13 on the inner wall of the first installation cavity, and the heat - dissipation sleeve 3 is provided with a second positioning groove 37 on the side wall of the heat - dissipation cavity 31. At least part of the retaining protrusion 13 extends into the second positioning groove 37 to limit the relative movement of the heat - dissipation sleeve 3 and the housing 1 along the plug - in and unplugging direction.

[0092] Specifically, a heat - dissipation sleeve 3 is installed in the first installation cavity, and the heat - dissipation sleeve 3 can effectively accelerate the heat dissipation of the contact piece 2 installed therein. Therefore, the contact piece 2 installed in the first installation cavity is generally a high - heat - generating contact piece 2, such as the positive - pole contact piece 2a, the negative - pole contact piece 2b, etc.

[0093] Furthermore, for the convenience of the extension of the contact piece 2 or the insertion of the contact piece 2 of other connectors, grid bars 12 are arranged on one side of the housing 1 close to the contact piece 21. Gaps are formed between the grid bars 12. When it is used as the male socket 40, the contact piece 21 can extend out through the gap. When it is used as the female socket 10, the contact piece 21 of the male socket 40 can be inserted through the gap.

[0094] Specifically, taking the connector of this embodiment as the female socket 10 as an example, the grid bars 12 are arranged on one side of the housing 1 facing the mating male socket 40. There are jacks between the grid bars 12, allowing the contacts 2 of the male socket 40 to be inserted into the female socket 10 through the jacks. At the same time, the grid bars 12 can limit the installation of the heat dissipation sleeve 3 and restrict the installation depth of the heat dissipation sleeve 3. In addition, anti-detachment protrusions 13 are provided on the inner wall of the housing 1 to limit the installed heat dissipation sleeve 3 and prevent the heat dissipation sleeve 3 from detaching from the housing 1, ensuring the reliability of the installation of the heat dissipation sleeve 3. During installation, first install the contacts 2 into the heat dissipation sleeve 3, and then insert the heat dissipation sleeve 3 into the installation cavity 11 from the side of the installation cavity 11 close to the anti-detachment protrusion 13, so that the anti-detachment protrusion 13 can be snapped into the second positioning groove 37 on the outer side wall of the heat dissipation cavity 31 to achieve snap connection and fixation. This structure has the advantage of simple installation.

[0095] Among them, the second positioning groove 37 can be a through groove or a blind groove.

[0096] For the convenience of processing, in one embodiment, the second positioning groove 37 and the aforementioned first positioning groove 34 are arranged in a through manner. In this way, only one opening operation needs to be performed on the heat dissipation sleeve 3. The part of the through hole close to the inner wall of the heat dissipation sleeve 3 is used as the first positioning groove 34, and the part of the through hole close to the outer wall of the heat dissipation sleeve 3 is used as the second positioning groove 37.

[0097] Specifically, the installation cavity 11 includes a second installation cavity; the housing 1 is provided with anti-detachment protrusions 13 on the inner wall of the second installation cavity, the heat dissipation sleeve 3 is provided with positioning openings on the side wall of the heat dissipation cavity 31, and at least part of the anti-detachment protrusions 13 extends into the positioning openings to limit the relative movement of the heat dissipation sleeve 3 and the housing 1 in the plugging and unplugging direction; the contact is provided with an elastic snap connection part 221, and at least part of the elastic snap connection part 221 extends into the positioning openings to fixedly snap-connect the contact 2 and the heat dissipation cavity 31.

[0098] Among them, the positioning opening is an opening penetrating the side wall of the heat dissipation sleeve 3. Referring to the position of the first positioning groove 34 or the second positioning groove 37 in the attached drawings, the positioning opening can be set at the position of the first positioning groove 34 or the second positioning groove 37. By setting the positioning opening, the elastic snap connection part 221 can extend into the positioning opening from the inside of the heat dissipation sleeve 3, and the anti-detachment protrusion 13 can extend into the positioning opening from the outside of the heat dissipation sleeve 3. Thus, by only setting one positioning opening, the elastic snap connection part 221 can be used to limit and fix the contact 2 and the heat dissipation sleeve 3, and the anti-detachment protrusion 13 can be used to limit and fix the heat dissipation sleeve 3 and the housing 1. The positioning opening can also be understood as an opening structure formed after connecting the first positioning groove 34 and the second positioning groove 47 on the heat dissipation sleeve 3.

[0099] In one embodiment, a guiding inclined surface is formed on one side of the anti - detachment protrusion 13 facing the insertion direction of the heat dissipation sleeve 3.

[0100] Specifically, by providing a guiding inclined surface on one side of the anti - detachment protrusion 13 facing the insertion direction of the heat dissipation sleeve 3, it can guide the heat dissipation sleeve 3 to be smoothly inserted into the installation cavity 11 and expand the anti - detachment protrusions 13 on both sides, enabling the heat dissipation sleeve 3 to smoothly cross the anti - detachment protrusions 13.

[0101] In one embodiment, the housing 1 is provided with a plurality of limiting ribs 14 arranged at circumferential intervals along the inner wall of the first installation cavity. The limiting ribs 14 extend along the plug - in and unplugging direction, and the outer periphery of the heat dissipation sleeve 3 abuts against each of the limiting ribs 14 respectively.

[0102] Specifically, by arranging a plurality of limiting ribs 14 at intervals on the inner wall of the housing 1, the contact area between the heat dissipation sleeve 3 and the housing 1 can be reduced. Each limiting rib 14 can be in close contact with the heat dissipation sleeve 3, improving the installation stability of the heat dissipation sleeve 3.

[0103] In one embodiment, combined with Figure 3-Figure 4 , the contact piece 2 includes a supporting leg 22 and a contact piece 21 connected to each other. The supporting leg 22 is provided with an elastic clamping portion 221. The installation cavity 11 further includes a second installation cavity. Part of the contact piece 2 is arranged in the second installation cavity. The housing 1 is provided with a third positioning groove 17 on the side wall of the second installation cavity. The elastic clamping portion 221 of the contact piece 2 arranged in the second installation cavity is snapped into the third positioning groove 17;

[0104] A tail limiting block 222 protrudes from one side of the contact piece 2, and the tail limiting block 222 abuts against the end of the housing 1. The common cooperation of the tail limiting block 222 and the elastic clamping portion 221 restricts the movement of the contact piece 2 relative to the heat dissipation sleeve 3 along the plug - in and unplugging direction.

[0105] Specifically, there is no heat dissipation sleeve 3 in the second installation cavity, and the contact piece 2 is directly installed in the second installation cavity. Therefore, the second installation cavity is suitable for installing contact pieces 2 with less heat generation, such as signal contact pieces 2c. Similarly, by using the common cooperation of the elastic clamping portion 221 and the tail limiting block 222 to snap the contact piece 2 into the second installation cavity, it has the advantages of easy installation and good reliability.

[0106] In one embodiment, the inner wall of the second installation cavity is provided with a second limiting sliding groove 16 extending along the plug - in and unplugging direction. Part of the supporting leg 22 is located in the second limiting sliding groove 16, and the second limiting sliding groove 16 restricts the movement of the contact piece 2 relative to the second installation cavity in the direction perpendicular to the plug - in and unplugging direction.

[0107] Similarly, by using the second limiting sliding groove 16 on the inner wall of the second installation cavity to clamp the supporting leg 22 of the contact piece 2, the installation reliability of the contact piece 2 can be effectively improved.

[0108] In one embodiment, it further includes a conductive sheet, which is disposed at one end of the heat dissipation sleeve 3 close to the support leg 22, and both the contact piece 2 and the heat dissipation sleeve 3 are fixedly connected to the conductive sheet.

[0109] Specifically, the conductive sheet is a copper sheet or a copper busbar structure connected to the connector. Welding the contact piece 2 and the heat dissipation sleeve 3 to the conductive sheet together can not only establish electrical conduction between the contact piece 2 and the conductive sheet, but also facilitate the contact piece 2 and the heat dissipation sleeve 3 to quickly conduct heat to the conductive sheet and dissipate it outward, further improving the heat dissipation efficiency.

[0110] In another embodiment, it further includes a circuit board, which is disposed at one end of the heat dissipation sleeve 3 close to the support leg 22, and both the contact piece 2 and the heat dissipation sleeve 3 are fixedly connected to the conductive sheet.

[0111] Similarly, welding the contact piece 2 and the heat dissipation sleeve 3 to the circuit board together can not only establish electrical conduction between the contact piece 2 and the circuit board, but also facilitate the contact piece 2 and the heat dissipation sleeve 3 to quickly conduct heat to the circuit board and dissipate it outward, further improving the heat dissipation efficiency.

[0112] In one embodiment, the heat dissipation sleeve 3 is made of copper, copper alloy, aluminum or aluminum alloy.

[0113] The heat dissipation sleeve 3 made of the above materials has the advantages of good heat conduction performance, easy material selection and processing.

[0114] In one embodiment, referring to Figure 11 , a positioning anti-fooling hole 15 is provided on the outer shell 1.

[0115] The positioning anti-fooling hole 15 provided on the outer shell 1 can facilitate the alignment and guiding during the insertion of the male seat 40 and the female seat 10, and avoid the problem of reverse insertion of the positive and negative poles. Specifically, in this embodiment, the connector serves as the female seat 10, and two positioning anti-fooling holes 15 are respectively provided on both sides of the outer shell 1, and the shapes of the two positioning anti-fooling holes 15 are different; two anti-fooling convex posts 41 are correspondingly provided on the male seat 40, and the two anti-fooling convex posts 41 can be respectively inserted into the two positioning anti-fooling holes 15 during insertion, so as to avoid the reverse insertion problem of the male seat 40 and the female seat 10.

[0116] In one embodiment, referring to Figure 4 , the installation cavity 11 includes a first installation cavity and a second installation cavity. The first installation cavity includes a positive electrode installation cavity 11a and a negative electrode installation cavity 11b, and the second installation cavity includes a signal electrode installation cavity 11c;

[0117] The heat dissipation sleeve 3 includes a positive heat dissipation sleeve 3a and a negative heat dissipation sleeve 3b. The contact piece 2 includes a positive contact piece 2a and a negative contact piece 2b. The positive heat dissipation sleeve 3a is installed in the positive installation cavity 11a, and the positive contact piece 2a is installed on the positive heat dissipation sleeve 3a; the negative heat dissipation sleeve 3b is installed in the negative installation cavity 11b, and the negative contact piece 2b is installed on the negative heat dissipation sleeve 3b.

[0118] The contact piece 2 includes a signal contact piece 2c, and the signal contact piece 2c is installed in the signal electrode installation cavity 11c; the signal electrode installation cavity 11c is located between the positive installation cavity 11a and the negative installation cavity 11b.

[0119] The positive heat dissipation sleeve 3a and the negative heat dissipation sleeve 3b are respectively provided for the positive contact piece 2a and the negative contact piece 2b, which can respectively achieve effective heat dissipation of the positive contact piece 2a and the negative contact piece 2b. The use safety and durability of the connector are effectively improved.

[0120] The signal contact piece 2c is designed to be installed in the signal electrode installation cavity 11c. It is responsible for transmitting signals between connectors, which can be analog signals or digital signals, depending on the application requirements. The signal contact piece 2c generates less heat during operation, so the heat dissipation sleeve 3 is omitted for it to reduce product cost. The positive installation cavity 11a and the negative installation cavity 11b are respectively arranged on both sides of the signal electrode installation cavity 11c, which can keep the high-heat positive contact piece 2a and negative contact piece 2b at the maximum distance to avoid heat accumulation and optimize the heat dissipation effect.

[0121] In one embodiment, the installation cavity 11 includes a plurality of them, and an interval cavity 18 is provided between two adjacent installation cavities 11. The interval cavity 18 is a through cavity along the insertion direction.

[0122] Setting the interval cavity 18 between two adjacent installation cavities 11 can increase the distance between the contact pieces 2 in two adjacent installation cavities 11, which is beneficial to heat dissipation and at the same time reduces the problem of signal interference between the contact pieces 2.

[0123] In one embodiment, the connector is a female connector, and the contact piece 2 is the female contact piece of the female connector, which is used to plug with the male contact piece of the male connector. The female contact piece is completely installed in the installation cavity 11.

[0124] In another embodiment, the connector is a male connector, and the contact piece 2 is the male contact piece of the male connector, which is used to plug with the female contact piece of the female connector; part of the male contact piece is fixed in the installation cavity 11, and part extends out of the installation cavity 11.

[0125] On the other hand, a drone is provided, which includes a power module, and the power module includes the above-mentioned connector.

[0126] Among them, the unmanned aerial vehicle (UAV) can be, for example, an agricultural UAV, a remote sensing UAV, etc. Specifically, the power module of the UAV includes a battery and an electrical connection part provided on the fuselage. One of the battery and the electrical connection part on the fuselage is provided with a male connector, and the other is provided with a female connector. After the male connector and the female connector are plugged together, a connection between the battery and the electrical connection part can be established, so as to supply power to the electrical modules on the UAV through the battery. The electrical modules can include, for example, a drive module, a spraying operation module, a sowing operation module, a sensing module, and so on; at least one of the male connector and the female connector adopts the structure of the connector in this embodiment.

[0127] Based on the connector of this embodiment, it has the advantage of high heat dissipation efficiency, and can effectively avoid the problem of shortened connector life caused by increased resistance and increased heat dissipation after frequent plugging and unplugging.

[0128] In the description herein, it should be understood that the orientation or positional relationships such as "upper", "lower", "left", "right", etc. are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to this application. In addition, the terms "first" and "second" are only used for distinction in description and do not have any special meaning.

[0129] In the description of this specification, the description with reference to terms such as "one embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0130] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0131] The technical principle of this application has been described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of this application and cannot be construed as a limitation to the protection scope of this application in any way. Based on the explanations herein, those skilled in the art can think of other specific implementation manners of this application without creative labor, and these manners will all fall within the protection scope of this application.

Claims

1. A connector, characterized in that, Comprising: A housing (1) having an installation cavity (11); A plurality of contact pieces (2) disposed inside the installation cavity (11); A heat dissipation sleeve (3) installed in the installation cavity (11), the heat dissipation sleeve (3) having a heat dissipation cavity (31); At least a part of the contact pieces (2) are installed in the heat dissipation cavity (31), and the contact pieces (2) disposed inside the heat dissipation cavity (31) are in contact with the wall surface of the heat dissipation cavity (31) to perform heat exchange with the heat dissipation sleeve (3).

2. The connector according to claim 1, characterized in that, The heat dissipation sleeve (3) includes an outer frame (32) and a partition (33) disposed inside the outer frame (32), the partition (33) dividing the internal space of the outer frame (32) into two or more heat dissipation cavities (31), and the contact pieces (2) are dispersedly installed in each of the heat dissipation cavities (31).

3. The connector according to claim 2, wherein The partition (33) divides the internal space of the outer frame (32) into heat dissipation cavities (31) corresponding to the number of the contact pieces (2), and each contact piece (2) is correspondingly installed in one heat dissipation cavity (31).

4. The connector according to claim 1, characterized in that, The heat dissipation cavity (31) is a through cavity that penetrates the heat dissipation sleeve (3) along the insertion and extraction direction.

5. The connector according to claim 1, characterized in that The contact piece (2) includes a supporting leg (22) and a contact piece (21) connected thereto, the supporting leg (22) is snap-fitted and fixed to the heat dissipation sleeve (3), and the contact piece (21) is used for contacting other connectors that are inserted and plugged into each other.

6. The connector according to claim 5, wherein, The supporting leg (22) is provided with an elastic snap-fitting portion (221), and the heat dissipation sleeve (3) is provided with a first positioning groove (34) located on the side wall of the heat dissipation cavity (31). By at least a part of the elastic snap-fitting portion (221) extending into the first positioning groove (34), the contact piece (2) is fixedly snap-fitted with the heat dissipation cavity (31).

7. The connector according to claim 6, wherein A tail limiting block (222) protrudes from a side of the supporting leg (22) away from the contact piece (21), and the tail limiting block (222) abuts against an end of the heat dissipation sleeve (3) away from the contact piece (21). The relative movement of the contact piece (2) relative to the heat dissipation sleeve (3) along the insertion and extraction direction is restricted by the common cooperation of the tail limiting block (222) and the elastic snap-fitting portion (221).

8. The connector according to claim 7, characterized in that, An avoidance groove (36) is provided at an end of the heat dissipation sleeve (3) away from the contact piece (21), and the tail limiting block (222) is snapped into the avoidance groove (36), so that an end face of the supporting leg (22) away from the contact piece (21) is substantially flush with an end face of the heat dissipation sleeve (3).

9. The connector according to claim 5, characterized in that, A limiting convex portion (223) protruding from a side wall of the supporting leg (22) relative to the contact piece (21) is provided on a side portion of the supporting leg (22). The heat dissipation sleeve (3) is provided with a first limiting sliding groove (35) located on the inner side wall of the heat dissipation cavity (31) and extending along the insertion and extraction direction. The relative movement of the contact piece (2) relative to the heat dissipation sleeve (3) in a direction perpendicular to the insertion and extraction direction is restricted by the cooperation of the first limiting sliding groove (35) and the limiting convex portion (223).

10. The connector according to claim 9, characterized in that, The limiting convex portions (223) are provided on both opposite sides of the supporting leg (22).

11. The connector according to claim 6, wherein, Each of the contact pieces (2) includes two symmetrically arranged sub-pieces, and the elastic clamping portions (221) are provided on both of the two sub-pieces, and the bending directions of the elastic clamping portions (221) provided on the two sub-pieces are opposite; and / or, The elastic clamping portion (221) is provided on the side of the supporting leg (22), an interval is formed between the elastic clamping portion (221) and the supporting leg (22), and the elastic clamping portion (221) extends toward the end of the supporting leg (22).

12. The connector according to claim 1, characterized in that, The installation cavity (11) includes a first installation cavity; the housing (1) is provided with a retaining projection (13) on the inner wall of the first installation cavity, and the heat dissipation sleeve (3) is provided with a second positioning groove (37) on the side wall of the heat dissipation cavity (31), and at least a part of the retaining projection (13) extends into the second positioning groove (37) to limit the relative movement of the heat dissipation sleeve (3) with respect to the housing (1) in the plugging and unplugging direction; or, The installation cavity (11) includes a first installation cavity; the housing (1) is provided with a retaining projection (13) on the inner wall of the first installation cavity, and the heat dissipation sleeve (3) is provided with a positioning opening on the side wall of the heat dissipation cavity (31), and at least a part of the retaining projection (13) extends into the positioning opening to limit the relative movement of the heat dissipation sleeve (3) with respect to the housing (1) in the plugging and unplugging direction; the contact piece is provided with an elastic clamping portion (221), and at least a part of the elastic clamping portion (221) extends into the positioning opening, so that the contact piece (2) is fixedly clamped with the heat dissipation cavity (31).

13. The connector according to claim 12, wherein A guiding inclined surface is formed on one side of the retaining projection (13) facing the insertion direction of the heat dissipation sleeve (3).

14. The connector according to claim 12, wherein, The housing (1) is provided with a plurality of limiting ribs (14) arranged at circumferential intervals around the inner wall of the first installation cavity, the limiting ribs (14) extend in the plugging and unplugging direction, and the outer periphery of the heat dissipation sleeve (3) abuts against each of the limiting ribs (14).

15. The connector according to claim 1, characterized in that The contact piece (2) includes a connected supporting leg (22) and a contact piece (21), the supporting leg (22) is provided with an elastic clamping portion (221), the installation cavity (11) further includes a second installation cavity, and part of the contact pieces (2) are arranged in the second installation cavity, and the elastic clamping portion (221) of the contact piece (2) arranged in the second installation cavity is clamped into the third positioning groove (17); A tail limiting block (222) protrudes from one side of the contact piece (2), the tail limiting block (222) abuts against the end of the housing (1), and the combined action of the tail limiting block (222) and the elastic clamping portion (221) restricts the relative movement of the contact piece (2) with respect to the heat dissipation sleeve (3) in the plugging and unplugging direction.

16. The connector according to claim 15, characterized in that The inner wall of the second installation cavity is provided with a second limiting sliding groove (16) extending in the plugging and unplugging direction, and a part of the supporting leg (22) is located in the second limiting sliding groove (16), and the relative movement of the contact piece (2) with respect to the second installation cavity in the direction perpendicular to the plugging and unplugging direction is restricted by the second limiting sliding groove (16).

17. The connector according to claim 5, characterized in that, It further includes a conductive sheet, which is arranged at one end of the heat dissipation sleeve (3) close to the support leg (22), and both the contact piece (2) and the heat dissipation sleeve (3) are fixedly connected to the conductive sheet; or, It further includes a circuit board, which is arranged at one end of the heat dissipation sleeve (3) close to the support leg (22), and both the contact piece (2) and the heat dissipation sleeve (3) are fixedly connected to the conductive sheet.

18. The connector according to claim 1, wherein, The heat dissipation sleeve (3) is made of copper, copper alloy, aluminum or aluminum alloy.

19. The connector according to claim 1, characterized in that, The installation cavity (11) includes a first installation cavity and a second installation cavity. The first installation cavity includes a positive electrode installation cavity (11a) and a negative electrode installation cavity (11b), and the second installation cavity includes a signal electrode installation cavity (11c); The heat dissipation sleeve (3) includes a positive electrode heat dissipation sleeve (3a) and a negative electrode heat dissipation sleeve (3b). The contact piece (2) includes a positive electrode contact piece (2a) and a negative electrode contact piece (2b). The positive electrode heat dissipation sleeve (3a) is installed in the positive electrode installation cavity (11a), and the positive electrode contact piece (2a) is installed on the positive electrode heat dissipation sleeve (3a); the negative electrode heat dissipation sleeve (3b) is installed in the negative electrode installation cavity (11b), and the negative electrode contact piece (2b) is installed on the negative electrode heat dissipation sleeve (3b); The contact piece (2) includes a signal contact piece (2c), and the signal contact piece (2c) is installed in the signal electrode installation cavity (11c); the signal electrode installation cavity (11c) is located between the positive electrode installation cavity (11a) and the negative electrode installation cavity (11b).

20. The connector according to claim 1, characterized in that, There are multiple installation cavities (11), and an interval cavity (18) is provided between two adjacent installation cavities (11). The interval cavity (18) is a through cavity along the insertion direction.

21. The connector according to any one of claims 1-20, characterized in that, The connector is a female socket connector, and the contact piece (2) is the female socket contact piece of the female socket connector for plugging with the male socket contact piece of the male socket connector. The female socket contact piece is completely installed in the installation cavity (11).

22. The connector according to any one of claims 1-2, 12-15, 18-20, characterized in that, The connector is a male socket connector, and the contact piece (2) is the male socket contact piece of the male socket connector for plugging with the female socket contact piece of the female socket connector; part of the male socket contact piece is fixed in the installation cavity (11), and part extends out of the installation cavity (11).

23. A drone, characterized in that, It includes a power module, and the power module includes the connector as described in any one of claims 1-22.

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