Power supply device and measuring device

Abstract

The application provides a power supply device and a measuring equipment, which comprises a centering rod, a first inner cavity of the centering rod, a connecting part integrally arranged on the centering rod, an outer threaded part of the connecting part, the outer threaded part is used for cooperating with an inner threaded part on a main machine, that is, the connecting part is directly screwed with the main machine to connect the centering rod and the main machine together, a first power supply battery arranged in the first inner cavity, and a first conductive connector arranged on the connecting part, the first conductive connector is electrically connected with the first power supply battery, and the first conductive connector is used for being electrically connected with a second conductive connector on the main machine under the cooperation of the outer threaded part and the inner threaded part on the main machine, so that the first power supply battery supplies power to a circuit board on the main machine. The power supply device reduces the number of parts, reduces the structural complexity, reduces the contact resistance and potential failure points, and improves the power supply stability and equipment reliability.

Description

Technical Field

[0001] This application relates to the field of measurement technology, and in particular to a power supply device and measuring equipment. Background Technology

[0002] In traditional power supply solutions for measurement equipment, an external power supply and associated cables are typically required. Taking RTK equipment as an example, when performing static data acquisition or mobile station operations, an additional power supply and connecting cables must be carried, which not only increases the weight of the equipment but also affects the ease of operation.

[0003] To address this issue, Chinese patent CN106168494B proposes a power supply structure for a measuring device. Its core components include: a centering tube connected to the RTK host, an internal connector, a locking cap, a centering tube connector, a battery outer tube, and a connecting part. Specifically, the internal connector is built into the inside of the RTK battery compartment cover; the centering tube connector is built into the locking cap, with both ends of the locking cap threaded to the centering tube and the host's 5 / 8" interface, respectively; the battery outer tube is nested inside the centering tube, and its bottom is fixed to the connecting part by a connecting cap. This solution achieves indirect communication between the internal connector and the centering tube connector through the locking cap, eliminating the need for external cables, but it has the following drawbacks:

[0004] The electrical conduction path adopts a three-level transfer structure of "centering tube connector → locking cap → internal connector of instrument", which has a large number of parts and makes the structure relatively complex. Utility Model Content

[0005] This application provides a power supply device and a measuring device to solve the problems existing in the related technology. The technical solution is as follows:

[0006] In a first aspect, embodiments of this application provide a power supply device for connecting to the host of a measuring device, comprising:

[0007] The centering rod has a first inner cavity and an integrally formed connecting part. The connecting part is provided with an external thread, which is used to mate with an internal thread on the main unit to connect the centering rod to the main unit.

[0008] A first power supply battery, wherein the first power supply battery is disposed within the first inner cavity; and

[0009] The first conductive connector is disposed on the connecting part and is electrically connected to the first power supply battery. When the external thread part is engaged with the internal thread part on the host, the first conductive connector is used to electrically connect to the second conductive connector on the host.

[0010] In one embodiment, the connecting portion has a receiving cavity that extends through the connecting portion from both the top and bottom, the receiving cavity is connected to the first inner cavity, and the first conductive connector is disposed within the receiving cavity.

[0011] In one embodiment, the outer wall of the first conductive connector is interference-fitted with the inner wall of the receiving cavity.

[0012] In one embodiment, the first conductive connector includes:

[0013] A first insulating housing, the first insulating housing being connected to the centering rod; and

[0014] The first conductor is disposed on the first insulating shell and is used to cooperate with the second conductor of the second conductive connector.

[0015] In one embodiment, the first conductor has a socket for insertion into a second conductor; or, the first conductor is used for insertion into a socket of the second conductor.

[0016] In one embodiment, the connecting portion is used to be inserted into a connecting hole on the host, and the height dimension of the external thread portion is smaller than the height dimension of the connecting portion.

[0017] In one embodiment, the connecting portion is provided with a seal, which is disposed around the external thread portion. When the external thread portion engages with the internal thread portion on the main unit, the seal is sandwiched between the connecting portion and the main unit.

[0018] Secondly, embodiments of this application provide a measuring device, including:

[0019] The host has a second inner cavity and a connecting hole, the connecting hole communicating with the second inner cavity, and the wall of the connecting hole is provided with an internal thread;

[0020] A circuit board, wherein the circuit board is disposed within the second inner cavity;

[0021] A second conductive connector is disposed within the connection hole and is electrically connected to the circuit board; and

[0022] In the aforementioned power supply device, the external threaded portion mates with the internal threaded portion, and the first conductive connector is electrically connected to the second conductive connector.

[0023] In one embodiment, the measuring device further includes:

[0024] The second power supply battery is located inside the second inner cavity and is electrically connected to the circuit board.

[0025] In one embodiment, the internal thread is a 5 / 8 standard thread.

[0026] The advantages or beneficial effects of the above technical solutions include at least the following:

[0027] The power supply device of this utility model utilizes the connecting part of the centering rod to directly connect to the main unit via a threaded connection, eliminating the need for multiple intermediate components such as the centering tube and locking cap in traditional solutions. This simplifies the mechanical fixing path from the traditional "two-stage transfer" to a "single-stage direct connection." Furthermore, with the external thread engaging with the internal thread on the main unit, the first conductive connector can electrically connect to the second conductive connector on the main unit, eliminating the need for the locking cap in traditional solutions. This simplifies the electrical conduction path from the traditional three-stage transfer of "centering tube connector → locking cap → internal connector" to a single-stage direct connection of "first conductive connector → second conductive connector" (i.e., the first conductive connector directly contacts the second conductive connector on the main unit). This design reduces the number of components, lowers structural complexity, reduces contact resistance and potential failure points, and improves power supply stability and equipment reliability. Secondly, the mechanical fixing and electrical connection of the centering rod and the main unit are completed simultaneously through threaded engagement, eliminating the need for additional locking mechanisms or... The connecting cable significantly simplifies the equipment assembly process. Furthermore, by reducing the use of easily damaged parts such as locking caps and employing a direct contact connection for the first conductive connector, wear and poor contact issues caused by traditional cable plugging and unplugging are avoided, thus reducing equipment maintenance frequency and costs and extending overall service life. Additionally, by integrating the first power supply battery into the centering rod and the first conductive connector into the connecting part, the original structural space of the centering rod is fully utilized, avoiding redundant layouts and achieving a compact design. This not only makes the power supply device more aesthetically pleasing but also improves the utilization rate of the centering rod's internal space, facilitating the miniaturization of the power supply device. Moreover, this power supply device combines the centering rod function with the power supply function, transforming the centering rod, a measurement auxiliary device, into an integrated power supply platform. Without interfering with measurement accuracy, it solves the problem of cumbersome equipment caused by traditional power supply schemes and reduces the manufacturing cost of separate power supply modules.

[0028] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of this application will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0029] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0030] Figure 1 This is a cross-sectional view of the power supply device of this utility model;

[0031] Figure 2 This is a cross-sectional view of the measuring device of this utility model;

[0032] Figure 3 for Figure 2 Enlarged view of section A in the image;

[0033] Figure 4 This is a cross-sectional view of the main unit in the measuring device of this utility model.

[0034] Figure Labels

[0035] 1. Centering rod; 11. Rod body; 111. First inner cavity; 12. Connector; 121. Connecting part; 1211. External threaded part; 1212. Receiving cavity; 2. First power supply battery; 3. First conductive connector; 31. First insulating shell; 32. First conductor; 321. Insertion hole; 4. Seal; 5. Main unit; 51. Second inner cavity; 52. Connecting hole; 53. Internal threaded part; 6. Circuit board; 7. Second conductive connector; 71. Second insulating shell; 72. Second conductor; 8. Second power supply battery. Detailed Implementation

[0036] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this application. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0037] See Figure 1 This invention illustrates a preferred embodiment of a power supply device for connecting to the host unit 5 of a measuring device, comprising:

[0038] The centering rod 1 has a first inner cavity 111 and an integrally formed connecting part 121. The connecting part 121 has an external thread 1211, which is used to cooperate with the internal thread 53 on the main unit 5. That is, the connecting part 121 is directly threaded to the main unit 5 to connect the centering rod 1 and the main unit 5 together.

[0039] The first power supply battery 2 is disposed within the first inner cavity 111; and

[0040] The first conductive connector 3 is disposed on the connecting part 121 and is electrically connected to the first power supply battery 2. When the external thread part 1211 is engaged with the internal thread part 53 on the host 5, the first conductive connector 3 is used to electrically connect with the second conductive connector 7 on the host 5 so that the first power supply battery 2 supplies power to the circuit board 6 on the host 5.

[0041] The power supply device of this utility model utilizes the connecting part 121 of the centering rod 1 to directly connect with the main unit 5 via a thread, eliminating the need for multiple intermediate components such as the centering tube and locking cap in traditional solutions. This simplifies the mechanical fixing path from the traditional "two-stage transfer" to a "single-stage direct connection." Furthermore, with the external thread 1211 engaging with the internal thread 53 on the main unit 5, the first conductive connector 3 can electrically connect with the second conductive connector 7 on the main unit 5, eliminating the need for the locking cap in traditional solutions. This simplifies the electrical conduction path from the traditional three-stage transfer of "centering tube connector → locking cap → internal connector" to a single-stage direct connection of "first conductive connector 3 → second conductive connector 7" (i.e., the first conductive connector 3 directly contacts the second conductive connector 7 on the main unit 5). This design reduces the number of parts, lowers structural complexity, reduces contact resistance and potential failure points, and improves power supply stability and equipment reliability. Secondly, the mechanical fixing and electrical connection between the centering rod 1 and the main unit 5 are completed simultaneously through threaded engagement, eliminating the need for additional installation... The installation of locking mechanisms or connecting cables significantly simplifies the equipment assembly process. Furthermore, by reducing the use of easily damaged parts such as locking caps and by employing a direct contact connection for the first conductive connector 3, wear and poor contact issues caused by traditional cable plugging and unplugging are avoided, thereby reducing equipment maintenance frequency and costs and extending overall service life. Additionally, by integrating the first power supply battery 2 into the centering rod 1 and the first conductive connector 3 into the connecting part 121, the original structural space of the centering rod 1 is fully utilized, avoiding redundant layout and achieving a compact design. This not only makes the power supply device more aesthetically pleasing but also improves the utilization rate of the internal space of the centering rod 1, facilitating the miniaturization of the power supply device. Moreover, this power supply device combines the functions of the centering rod 1 and the power supply function into one, transforming the centering rod 1, a measurement auxiliary device, into an integrated power supply platform. Without interfering with measurement accuracy, it solves the problem of equipment redundancy caused by traditional power supply schemes and reduces the manufacturing cost of separate power supply modules.

[0042] See Figure 1In one embodiment, the connecting part 121 has a receiving cavity 1212, which extends through the connecting part 121 from both the top and bottom. The receiving cavity 1212 is connected to the first inner cavity 111, and the first conductive connector 3 is disposed in the receiving cavity 1212. By providing a through-hole receiving cavity 1212 in the connecting part 121 and installing the first conductive connector 3 in the receiving cavity 1212, the first conductive connector 3 is placed in a relatively closed space, effectively avoiding contamination or damage caused by the external environment (such as dust, rain or mechanical collision), thereby improving the long-term stability and reliability of the electrical connection. Secondly, the receiving cavity 1212 is directly connected to the first inner cavity 111 of the centering rod 1, forming a through structure, which not only facilitates the wiring arrangement of the first power supply battery 2 and the first conductive connector 3, but also promotes air circulation and assists in heat dissipation, preventing the first power supply battery 2 or the first conductive connector 3 from overheating due to long-term operation and affecting performance. In addition, the through design of the receiving cavity 1212 facilitates the installation and maintenance of the first conductive connector 3, eliminating the need for a complex embedded assembly process, while reducing the need for sealing or isolation components, further reducing production costs and process difficulty.

[0043] In one embodiment, the outer wall of the first conductive connector 3 is interference-fitted with the inner wall of the receiving cavity 1212, forming a tight physical contact. This effectively reduces the risk of loosening or displacement of the first conductive connector 3, ensuring the accuracy of the connection between the first conductive connector 3 and the second conductive connector 7 on the host 5, and avoiding power outages or poor contact caused by vibration or movement. Secondly, the interference fit structure naturally forms a sealing barrier, which can prevent external contaminants such as dust and moisture from entering the receiving cavity 1212, reducing the probability of oxidation or short circuit of the first conductive connector 3, especially suitable for complex outdoor environments (such as humid and dusty scenes). In addition, no additional fasteners (such as screws or clips) are needed; the interference fit enables the quick installation and secure fixing of the first conductive connector 3, reducing assembly steps and production costs. Furthermore, the interference fit makes the first conductive connector 3 and the receiving cavity 1212 form an integral force-bearing structure, dispersing mechanical stress, avoiding local deformation or damage caused by external impact, and extending service life.

[0044] Of course, in other embodiments, the first conductive connector 3 can also be connected to the centering rod 1 by means of screws, clips or other structures.

[0045] See Figure 1 In one embodiment, the first conductive connector 3 includes:

[0046] The first insulating outer shell 31 is connected to the centering rod 1, that is, the outer wall of the first insulating outer shell 31 is interference-fitted with the inner wall of the receiving cavity 1212; and

[0047] The first conductor 32 is disposed on the first insulating shell 31 and is used to cooperate with the second conductor 72 of the second conductive connector 7. Thus, the first insulating shell 31 acts as an isolation layer, blocking direct contact between the first conductor 32 and the centering rod 1, avoiding the risk of leakage or short circuit, and improving power supply safety, especially suitable for harsh operating environments such as humid and dusty conditions. Secondly, the first conductor 32 is independently disposed on the first insulating shell 31, allowing it to form a directional connection with the second conductor 72 on the main unit 5, reducing contact resistance, ensuring current transmission stability, and lowering the probability of poor contact due to misalignment. Furthermore, the first conductor 32 and the first insulating shell 31 adopt a separate design, facilitating the individual replacement or repair of the damaged first conductor 32 without requiring the entire first conductive connector 3 to be replaced, thus reducing maintenance costs.

[0048] See Figures 2-3 In one embodiment, the first conductor 32 has a socket 321 for insertion and engagement with the second conductor 72; or, the first conductor 32 is used for insertion and engagement with the socket of the second conductor 72. Thus, the design of the socket 321 and the pin (e.g., the first conductor 32 is connected to the second conductor 72 via the socket 321, or vice versa) enables precise alignment, avoids misalignment, and ensures the stability of the electrical connection and low contact resistance. Secondly, the plug-in structure requires no additional fixing or tightening operations. The first conductor 32 and the second conductor 72 are automatically connected while the centering rod 1 is threaded to the host 5, significantly improving assembly efficiency and making it suitable for rapid assembly and disassembly in the field. In addition, the friction and mechanical self-locking effect of the plug-in fit can resist loosening caused by operational vibration or movement, and it is less likely to fall off than a planar contact, making it suitable for mobile measurement scenarios (such as RTK mobile station operations). Furthermore, the standardized design of the socket 321 / pin can flexibly match the conductive interfaces of different models of host 5 (such as different diameters or shapes), expanding the versatility of the power supply device.

[0049] Of course, in other embodiments, the first conductor 32 and the second conductor 72 can be in contact in a planar manner, and the first conductor 32 and the second conductor 72 can also be electrically connected by this connection method.

[0050] See Figures 2-3In one embodiment, the connecting part 121 is inserted into the connecting hole 52 on the host 5. The height of the external thread part 1211 is smaller than the height of the connecting part 121. Thus, since the connecting part 121 adopts an insert-type structure, it can be directly inserted into the connecting hole 52 of the host 5 to achieve pre-positioning, greatly simplifying the installation alignment process. Secondly, the design that the height of the external thread part 1211 is smaller than that of the connecting part 121 ensures that the insertion guide takes precedence over the thread engagement, realizing a reliable installation process of "aligning first and then locking". In addition, since the height of the external thread part 1211 is smaller than that of the connecting part 121, the overall height of the external thread part 1211 is shorter, which facilitates the quick assembly and disassembly of the power supply device, thereby improving the assembly and disassembly efficiency of the power supply device.

[0051] In one embodiment, when the external thread portion 1211 and the internal thread portion 53 are engaged, the connector 12 and the second conductive connector 7 are spaced apart to prevent the connector 12 from squeezing the second conductive connector 7 and to protect the second conductive connector 7.

[0052] See Figures 1-3 In one embodiment, the connecting portion 121 is provided with a sealing element 4, which surrounds the external thread portion 1211. When the external thread portion 1211 engages with the internal thread portion 53 on the main unit 5, the sealing element 4 is sandwiched between the connecting portion 121 and the main unit 5. In this way, the sealing element 4 surrounding the external thread portion 1211 forms a 360° full circumference seal, effectively preventing contaminants such as moisture and dust from entering the connection interface between the centering rod 1 and the main unit 5. Furthermore, the elastic force generated by the deformation of the sealing element 4 under pressure can compensate for the thread engagement clearance, suppress thread loosening caused by vibration, and improve the long-term connection reliability.

[0053] In one embodiment, the seal 4 can be a structure made of rubber or silicone.

[0054] See Figure 1 In one embodiment, the centering rod 1 includes:

[0055] Rod body 11, rod body 11 having a first inner cavity 111; and

[0056] The connector 12 is connected to the rod body 11 by ultrasonic welding. The connector 12 has the aforementioned connecting part 121, namely, the external thread part 1211 and the receiving cavity 1212 are both provided on the connector 12. In particular, since the connector 12 is connected to the rod body 11 by ultrasonic welding, the connector 12 and the rod body 11 form an integrated structure, eliminating the weak points of the connection in the traditional split structure.

[0057] Of course, in other embodiments, the centering rod 1 is a one-piece molded structure, that is, the centering rod 1 is an integral structure.

[0058] In one embodiment, the first power supply battery 2 can be a rechargeable battery or a disposable battery.

[0059] See Figures 2-4 This invention illustrates a preferred embodiment of a measuring device, comprising:

[0060] The main unit 5 has a second inner cavity 51 and a connecting hole 52. The connecting hole 52 communicates with the second inner cavity 51, and the hole wall of the connecting hole 52 is provided with an internal thread 53.

[0061] Circuit board 6 is disposed inside the second inner cavity 51;

[0062] The second conductive connector 7 is disposed within the connection hole 52 and is electrically connected to the circuit board 6; and

[0063] In the aforementioned power supply device, the external thread 1211 mates with the internal thread 53, and the first conductive connector 3 is electrically connected to the second conductive connector 7.

[0064] The measuring device of this utility model, due to the adoption of the aforementioned power supply device, also relies on the direct threaded connection of the connecting part 121 of the centering rod 1 to the main unit 5, eliminating the need for multiple intermediate components such as the centering tube and locking cap in the traditional solution. This simplifies the mechanical fixing path from the traditional "two-stage transfer" to "single-stage direct connection". When the external thread 1211 mates with the internal thread 53 on the main unit 5, the first conductive connector 3 can be electrically connected to the second conductive connector 7 on the main unit 5, eliminating the need for the locking cap in the traditional solution. This simplifies the electrical conduction path from the traditional three-stage transfer of "centering tube connector → locking cap → internal connector of the instrument" to a single-stage direct connection of "first conductive connector 3 → second conductive connector 7" (that is, the first conductive connector 3 directly contacts the second conductive connector 7 on the main unit 5). This design reduces the number of parts, lowers the structural complexity, reduces contact resistance and potential failure points, and improves power supply stability and equipment reliability. Furthermore, the centering rod 1 and the main unit 5 achieve simultaneous mechanical fixing and electrical connection through threaded engagement. This design eliminates the need for additional locking mechanisms or connecting cables, significantly simplifying the equipment assembly process. Furthermore, by reducing the use of easily damaged parts such as locking caps and employing a direct contact connection for the first conductive connector 3, wear and poor contact issues caused by traditional cable plugging and unplugging are avoided, thus reducing maintenance frequency and costs and extending the overall lifespan of the equipment. Additionally, by integrating the first power supply battery 2 into the centering rod 1 and the first conductive connector 3 into the connecting part 121, the original structural space of the centering rod 1 is fully utilized, avoiding redundant layouts and achieving a compact design. This not only makes the power supply device more aesthetically pleasing but also improves the utilization rate of the internal space of the centering rod 1, facilitating the miniaturization of measuring equipment. Moreover, this power supply device combines the functions of the centering rod 1 and the power supply into one, transforming the centering rod 1, a measuring auxiliary device, into an integrated power supply platform. This solves the problem of cumbersome equipment caused by traditional power supply schemes without interfering with measurement accuracy, and reduces the manufacturing cost of separate power supply modules.

[0065] See Figures 2-4 In one embodiment, the measuring device further includes:

[0066] The second power supply battery 8 is located within the second inner cavity 51 and is electrically connected to the circuit board 6. Thus, by incorporating the second power supply battery 8 into the measuring device and electrically connecting it to the circuit board 6, a dual-battery redundant power supply system is formed. When the second power supply battery 8 fails or runs out of power, the measuring device can switch to the first power supply battery 2, effectively preventing data loss due to power interruption and significantly improving the reliability of the equipment during field operations.

[0067] In one embodiment, the internal thread 53 is a 5 / 8 standard thread, that is, the internal thread 53 adopts the industry-standard 5 / 8 inch standard thread specification (such as UNC 5 / 8-11), which can be directly compatible with the standard interfaces of existing measuring equipment (such as total stations, RTK, etc.), realizing plug-and-play across brands and models of equipment; secondly, the internal thread 53 adopts the industry-standard 5 / 8 inch standard thread specification (such as UNC 5 / 8-11), which enables the main unit 5 to adapt to various fixing connection methods such as extension rod fixing and TB head fixing.

[0068] In one embodiment, the second conductive connector 7 includes:

[0069] The second insulating housing 71 is connected to the main unit 5; and

[0070] The second conductor 72 is disposed on the second insulating shell 71 and cooperates with the first conductor 32. Thus, the second insulating shell 71 acts as an isolation layer, blocking direct contact between the second conductor 72 and the main unit 5, avoiding the risk of leakage or short circuit, and improving power supply safety, especially suitable for harsh operating environments such as humid and dusty conditions. Secondly, the second conductor 72 is independently disposed on the second insulating shell 71, allowing it to form a directional connection with the first conductor 32 on the power supply device, reducing contact resistance, ensuring current transmission stability, and lowering the probability of poor contact due to misalignment. Furthermore, the second conductor 72 and the second insulating shell 71 adopt a separate design, facilitating the individual replacement or repair of the damaged second conductor 72 without requiring the entire second conductive connector 7 to be replaced, reducing maintenance costs.

[0071] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0072] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0073] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A power supply device, wherein the power supply device is used to connect to the main unit of the measuring equipment, characterized in that, include: The centering rod has a first inner cavity and an integrally formed connecting part. The connecting part is provided with an external thread, which is used to mate with an internal thread on the main unit to connect the centering rod to the main unit. A first power supply battery is disposed inside the first inner cavity; as well as A first conductive connector is disposed on the connecting portion and is electrically connected to the first power supply battery. When the external thread portion mates with the internal thread portion on the host, the first conductive connector is used to electrically connect to a second conductive connector on the host.

2. The power supply device according to claim 1, characterized in that, The connecting part has a receiving cavity, which extends through the connecting part from both the top and bottom. The receiving cavity is connected to the first inner cavity, and the first conductive connector is disposed in the receiving cavity.

3. The power supply device according to claim 2, characterized in that, The outer wall of the first conductive connector is interference-fitted with the inner wall of the receiving cavity.

4. The power supply device according to claim 1, characterized in that, The first conductive connector includes: A first insulating housing, the first insulating housing being connected to the centering rod; and The first conductor is disposed on the first insulating shell and is used to cooperate with the second conductor of the second conductive connector.

5. The power supply device according to claim 4, characterized in that, The first conductor has a socket for insertion and engagement with the second conductor; or, the first conductor is used for insertion and engagement with the socket of the second conductor.

6. The power supply device according to claim 1, characterized in that, The connecting part is used to be inserted into the connecting hole on the host, and the height dimension of the external thread part is smaller than the height dimension of the connecting part.

7. The power supply device according to claim 1, characterized in that, The connecting part is provided with a sealing element, which is arranged around the external threaded part. When the external threaded part is engaged with the internal threaded part on the main unit, the sealing element is sandwiched between the connecting part and the main unit.

8. A measuring device, characterized in that, include: The host has a second inner cavity and a connecting hole, the connecting hole communicating with the second inner cavity, and the wall of the connecting hole is provided with an internal thread; A circuit board, wherein the circuit board is disposed within the second inner cavity; A second conductive connector is disposed within the connection hole and is electrically connected to the circuit board; and The power supply device according to any one of claims 1-7, wherein the external thread portion mates with the internal thread portion, and the first conductive connector is electrically connected to the second conductive connector.

9. The measuring device according to claim 8, characterized in that, The measuring device also includes: The second power supply battery is located inside the second inner cavity and is electrically connected to the circuit board.

10. The measuring device according to claim 8, characterized in that, The internal thread is a 5 / 8 standard thread.

Images