Balancing weight plug pin and balancing weight assembly

Abstract

The balancing weight plug pin comprises a handle, a plug pin body, a circuit board assembly and a weighing or bending sensor, the plug pin body extends outwards from the handle and can be inserted into an inserting hole of a balancing weight, the circuit board assembly is arranged on the handle, and the weighing or bending sensor is arranged on the circuit board assembly. The weighing or bending sensor is arranged on the bolt, and the weighing or bending sensor is connected to the circuit board assembly. When a user uses the weight-bearing fitness equipment assembled with the balance weight assembly for fitness, the balance weight bolt can determine the load according to the resistance value fed back by the weighing or bending sensor so as to be used for monitoring the fitness process of the user.

Description

Technical Field

[0001] The invention relates to a weight-bearing fitness device, in particular to a counterweight block latch and a counterweight assembly. Background Art

[0002] Weight-bearing fitness equipment is a common device that helps users exercise. It provides multiple counterweights and latches, and users can select different numbers of counterweights through the latches. In this way, when using the weight-bearing fitness equipment, users can choose different weights, hoping to achieve their fitness goals. It is understandable that the energy consumed by the user per unit time is related to the weight of the counterweights the user lifts and the speed at which the counterweights are lifted. When using existing weight-bearing fitness equipment for exercise, users can only subjectively estimate the energy consumed per unit time. This estimation relies on the user's experience, but even for experienced users, it is difficult to accurately estimate the energy consumed per unit time, which may lead to insufficient or excessive exercise. In other words, existing weight-bearing fitness equipment cannot sense the energy consumed by the user per unit time, and thus cannot provide intelligent assistance to the user's fitness process. Summary of the Invention

[0003] One object of the present invention is to provide a counterweight pin and a counterweight assembly, wherein the pin of the counterweight pin is provided with a weighing or bending sensor. When a user uses a weight-bearing fitness equipment equipped with the counterweight assembly to exercise, the counterweight pin can obtain the weight of the counterweight selected by the user based on the resistance value fed back by the weighing or bending sensor, and subsequently various parameters related to the weight can be obtained, such as the energy consumed per unit time.

[0004] One object of the present invention is to provide a counterweight pin and a counterweight assembly, wherein when a user uses a weight-bearing fitness equipment equipped with the counterweight assembly to exercise, the accelerometer of the counterweight pin can obtain the speed and / or speed change of the user lifting the counterweight, and subsequently various parameters related to the speed and / or speed change can be obtained, thereby obtaining the energy consumed by the user per unit time.

[0005] One object of the present invention is to provide a counterweight latch and a counterweight assembly, wherein even after a user inserts the counterweight latch of the present invention into the counterweight of an existing weight-bearing fitness equipment, the counterweight latch can still obtain the user's weight load data and / or lifting speed data during exercise using the existing weight-bearing fitness equipment, thereby obtaining the user's energy consumption per unit time. In other words, simply by replacing the latch of the existing weight-bearing fitness equipment with the counterweight latch of the present invention, the user's weight load data and / or lifting speed data during exercise can be obtained, thereby reducing the cost of modifying the weight-bearing fitness equipment and reducing the cost of popularizing intelligent fitness equipment.

[0006] According to one aspect of the present invention, the present invention provides a counterweight latch, comprising: handle; a latch, wherein the latch extends outward from the handle and is capable of being inserted into the insertion hole of the counterweight; a circuit board assembly, wherein the circuit board assembly is disposed on the handle; and A load cell or bending sensor is provided on the latch and connected to the circuit board assembly.

[0007] According to one embodiment of the present invention, the latch has a latch receiving cavity and a wiring channel, the latch receiving cavity is located in the middle of the latch, and the wiring channel extends from the latch receiving cavity to the end of the latch where the handle is provided, wherein the weighing or bending sensor is provided in the latch receiving cavity of the latch, and the wires for connecting the weighing or bending sensor and the circuit board assembly are laid in the wiring channel of the latch.

[0008] According to one embodiment of the present invention, the latch includes a first latch part and a second latch part, and the first latch part and the second latch part are installed with each other to form the latch receiving cavity and the wiring channel between the first latch part and the second latch part, and there is a gap between the weighing or bending sensor and the second latch part.

[0009] According to one embodiment of the present invention, the first latch part has a groove, and the groove has a wider groove located in the middle of the first latch part and a narrower groove extending from the wider groove to the end of the first latch part. The second latch part is arranged in the groove of the latch part, and the wider groove of the groove forms the latch receiving cavity of the latch between the first latch part and the second latch part, and the narrower groove of the groove forms the wiring channel of the latch between the first latch part and the second latch part.

[0010] According to one embodiment of the present invention, the handle has a handle receiving cavity and an insertion hole connected to the handle receiving cavity, the circuit board assembly is received in the handle receiving cavity of the handle, and one end of the pin extends to the handle receiving cavity through the insertion hole of the handle.

[0011] According to one embodiment of the present invention, the handle includes a handle body and a handle cover body, the handle body has an assembly groove, the insertion hole of the handle is formed in the handle body, and the insertion hole is connected to the assembly groove of the handle body, the handle cover body is arranged in the assembly groove of the handle body, and the handle forms the handle accommodating cavity between the handle body and the handle cover body.

[0012] According to one embodiment of the present invention, the circuit board assembly includes a circuit board, and a battery and a processor disposed on the circuit board.

[0013] According to one embodiment of the present invention, the counterweight latch includes an accelerometer, and the accelerometer is mounted on the circuit board.

[0014] According to one embodiment of the present invention, the circuit board assembly includes an interface, which is mounted on the circuit board, wherein the handle has an interface hole, which is connected to the handle accommodating cavity, and the interface extends to the interface hole of the handle.

[0015] According to another aspect of the present invention, the present invention further provides a counterweight assembly, comprising: A guide rod, wherein the guide rod is configured to extend in a vertical direction; A plurality of counterweight blocks, wherein each of the counterweight blocks is stacked and configured to be guided in a movement direction by the guide rod, wherein each of the counterweight blocks has a lifting through-hole and an insertion hole, wherein the lifting through-hole passes through the thickness direction of the counterweight block, and the insertion hole passes through the width direction of the counterweight block, and the lifting through-hole and the insertion hole are in communication; A lifting rod, wherein the lifting rod has a rod body through-hole, the bottom end of the lifting rod can be inserted into the lifting through-holes of the counterweight blocks, and the rod body through-hole of the lifting rod is in communication with the insertion hole of at least one counterweight block; and The counterweight latch, wherein the counterweight latch further comprises: handle; a latch, wherein the latch extends outward from the handle and is capable of being inserted into the insertion hole of the counterweight; a circuit board assembly, wherein the circuit board assembly is disposed on the handle; and A weighing or bending sensor, wherein the weighing or bending sensor is arranged on the pin, and the weighing or bending sensor is connected to the circuit board assembly, wherein the pin of the counterweight block pin is arranged to be able to be inserted into the insertion hole of one of the counterweight blocks and the rod body through-hole of the lifting rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of a counterweight assembly according to a preferred embodiment of the present invention.

[0017] Figure 2 It is a schematic front view of the counterweight assembly according to the above preferred embodiment of the present invention.

[0018] Figure 3 It is a cross-sectional schematic diagram of the counterweight assembly according to the above preferred embodiment of the present invention.

[0019] Figure 4 It is a three-dimensional schematic diagram of the counterweight block assembly of the counterweight assembly according to the above preferred embodiment of the present invention.

[0020] Figure 5 1 is a schematic top view of the counterweight assembly of the counterweight assembly according to the preferred embodiment of the present invention.

[0021] Figure 6 It is a side view schematic diagram of the counterweight block assembly of the counterweight assembly according to the above preferred embodiment of the present invention.

[0022] Figure 7 It is a schematic exploded view from one perspective of the counterweight assembly of the counterweight assembly according to the above preferred embodiment of the present invention.

[0023] Figure 8 It is a schematic exploded view from another perspective of the counterweight assembly of the counterweight assembly according to the above preferred embodiment of the present invention.

[0024] Figure 9 It is a cross-sectional schematic diagram from a three-dimensional perspective of the counterweight block assembly of the counterweight assembly according to the above preferred embodiment of the present invention.

[0025] Figure 10 yes Figure 9 An enlarged schematic diagram of one location.

[0026] Figure 11 yes Figure 9 An enlarged schematic diagram of another position.

[0027] Figure 12 It is a schematic cross-sectional view of the counterweight assembly of the counterweight assembly according to the preferred embodiment of the present invention from a planar perspective.

[0028] Figure 13 yes Figure 12 An enlarged schematic diagram of one location. DETAILED DESCRIPTION

[0029] Before describing in detail any embodiment of the present invention, it should be understood that the present invention is not limited in its application to the construction and arrangement details of the components set forth in the following description or illustrated in the following figures. The present invention is capable of other embodiments and can be practiced or carried out in various ways. In addition, it should be understood that the words and terms used herein are for descriptive purposes and should not be considered restrictive. The use of "including" or "having" and their variations herein is intended to cover the items and their equivalents set forth below and additional items. Unless otherwise specified or limited, the terms "mounted", "connected", "supported" and "coupled" and their variations are used broadly and cover direct mounting and indirect mounting, connection, support and coupling. In addition, "connected" and "coupled" are not limited to physical or mechanical connections or couplings.

[0030] Furthermore, on the first hand, in the disclosure of the present invention, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore the above terms cannot be understood as limitations on the present invention; on the second hand, the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" cannot be understood as a limitation on the quantity.

[0031] Reference Attachment Figures 1 to 13 A counterweight assembly according to a preferred embodiment of the present invention will be disclosed and explained in the following description, wherein the counterweight assembly includes at least one guide rod 10, multiple counterweight blocks 20, a lifting rod 30 and a counterweight block pin 40.

[0032] The guide rod 10 is configured to extend in the vertical direction. The counterweights 20 are stacked and configured to be guided in the direction of movement by the guide rod 10. Each counterweight 20 has a lifting hole 21 and an insertion hole 22 that are interconnected. The lifting hole 21 runs through the thickness of the counterweight 20, and the insertion hole 22 runs through the width of the counterweight 20. The lifting rod 30 has at least one rod through-hole 31. The bottom of the lifting rod 30 can be inserted into the lifting hole 21 of these counterweights 20, and the rod through-hole 31 of the lifting rod 30 is connected to the insertion hole 22 of at least one counterweight 20. The counterweight latch 40 is configured to be inserted into the insertion hole 22 of the counterweight 20 and the rod through-hole 31 of the lifting rod 30, allowing the user to select a different number of counterweights 20. After the counterweight 20 is selected, when the user lifts the lifting rod 30 upward, the selected counterweight 20 and all the counterweights 20 located above the counterweight 20 are lifted, thereby helping the user achieve the corresponding fitness goal.

[0033] Preferably, the center of mass of the counterweight 20 is located at the lifting through-hole 21 of the counterweight 20 , so that when a user lifts the counterweight 20 through the lifting rod 30 , the counterweight 20 can be prevented from tilting.

[0034] In order to facilitate users to select an appropriate number of the counterweight blocks 20, in the counterweight assembly of the present invention, the number of the rod body through-holes 31 of the lifting rod 30 is multiple, and these rod body through-holes 31 are distributed at intervals along the extension direction of the lifting rod 30. When the user inserts the counterweight block pin 40 into the insertion hole 22 of the counterweight block 20 to be selected and any one of the rod body through-holes 31 of the lifting rod 30, the counterweight block 20 to be selected can be selected.

[0035] Reference Attachment Figures 1 to 3 The counterweight block 20 has at least one guide through-hole 23, which passes through the thickness direction of the counterweight block 20. The vertically extending guide rod 10 passes through the guide through-hole 23 of the counterweight block 20, so that the guide rod 10 can guide the movement direction of the counterweight block 20.

[0036] Preferably, in this specific example of the counterweight assembly of the present invention, the number of the guide rods 10 is two, and the two guide rods 10 are distributed at intervals from each other. The counterweight block 20 has two guide through-holes 23, and the two guide through-holes 23 respectively penetrate the thickness direction of the counterweight block 20 at the opposite ends of the counterweight block 20. The two guide rods 10 respectively pass through the two guide through-holes 23 of the counterweight block 20. In this way, when the user lifts the counterweight block 20 through the lifting rod 30, the counterweight block 20 can be prevented from rotating in the horizontal direction.

[0037] Continue to refer to the attached Figures 1 to 3 The counterweight assembly includes a base 50, and two guide rods 10 extend upward from opposite sides of the base 50. The base 50 is located directly below the counterweight blocks 20 and is used to provide support for the counterweight blocks 20. Preferably, the base 50 has a clearance hole 51. The clearance hole 51 of the base 50 is located opposite to the lifting hole 21 of the counterweight block 20. The clearance hole 51 of the base 50 is used to avoid the bottom of the lifting rod 30.

[0038] Attachment Figures 4 to 13 The specific structure of the counterweight pin 40 is shown, wherein the counterweight pin 40 includes a handle 41, a pin 42, a circuit board assembly 43 and a weighing or bending sensor 44, wherein the pin 42 extends outward from the handle 41, that is, the handle 41 is arranged at one end of the pin 42, wherein the circuit board assembly 43 is arranged on the handle 41, wherein the weighing or bending sensor 44 is arranged on the pin 42, and the weighing or bending sensor 44 is connected to the circuit board assembly 43.

[0039] The user can operate the counterweight pin 40 through the handle 41. For example, the user can operate the counterweight pin 40 through the handle 41 so that the pin 42 is inserted into the insertion hole 22 of the counterweight 20 and the rod body through-hole 31 of the lifting rod 30, or the user can operate the counterweight pin 40 through the handle 41 to pull the pin 42 out of the insertion hole 22 of the counterweight 20 and the rod body through-hole 31 of the lifting rod 30. When the user inserts the pin 42 into the insertion hole 22 of the counterweight 20 and the rod body through-hole 31 of the lifting rod 30, the position of the weighing or bending sensor 44 of the counterweight pin 40 corresponds to the position of the lifting rod 30 in the height direction. In this way, when the user lifts the lifting rod 30 upward, the gravity applied to the pin 42 by the counterweight 20 through the lifting rod 30 will cause the resistance value of the weighing or bending sensor 44 to change. The counterweight pin 40 can obtain the weight of the counterweight 20 selected by the user based on the resistance value fed back by the weighing or bending sensor 44, and subsequently various parameters related to the weight can be obtained, such as the energy consumed per unit time, to help the user achieve better fitness results. In some embodiments of the counterweight assembly of the present invention, the weighing or bending sensor 44 can be a deformation sensor, such as a deformation film sensor.

[0040] Furthermore, by arranging the circuit board assembly 43 on the handle 41, after the user inserts the counterweight latch 40 into the insertion hole 22 of the counterweight 20 and the rod body through-hole 31 of the lifting rod 30, the handle 41 is located to the side of the counterweight 20. Therefore, the handle 41 and the circuit board assembly 43 are not subjected to force, thereby protecting the circuit board assembly 43. Furthermore, the handle 41 can be larger than the latch 42, so a larger circuit board assembly 43 can be selected, allowing the circuit board assembly 43 to integrate more electronic components, which helps the counterweight latch 40 provide more functions.

[0041] Furthermore, the latch 42 has a latch cavity 421 and a wiring channel 422. The latch cavity 421 is located in the middle of the latch 42, and the wiring channel 422 extends from the latch cavity 421 to the end of the latch 42 where the handle 41 is located. The weighing or bending sensor 44 is disposed in the latch cavity 421 of the latch 42, and the wires 45 connecting the weighing or bending sensor 44 and the circuit board assembly 43 are routed through the wiring channel 422 of the latch 42. In this manner, the weighing or bending sensor 44 and the wires 45 are not visually visible, thereby facilitating protection of the weighing or bending sensor 44 and the wires 45.

[0042] Specifically, in the counterweight assembly of the present invention, the pin 42 includes a first pin part 423 and a second pin part 424, and the first pin part 423 and the second pin part 424 are installed with each other to form the pin accommodating cavity 421 and the wiring channel 422 between the first pin part 423 and the second pin part 424, wherein the weighing or bending sensor 44 and the wire 45 are hidden between the first pin part 423 and the second pin part 424.

[0043] More specifically, see the attached Figure 7 The first plug portion 423 has a groove 4231, and the groove 4231 has a wider groove 42311 located in the middle of the first plug portion 423 and a narrower groove 42312 extending from the wider groove 42311 to the end of the first plug portion 423. The weighing or bending sensor 44 is fixed to the first plug portion 423 in the wider groove 42311 of the first plug portion 423 and the wire 45 is laid in the narrower groove 4231 of the first plug portion 423. 2, the second latch portion 424 is arranged in the wider groove 42311 and the narrower groove 42312 of the first latch portion 423, so that the wider groove 42311 of the groove 4231 forms the latch receiving cavity 421 of the latch 42 between the first latch portion 423 and the second latch portion 424, and the narrower groove 42312 of the groove 4231 forms the wiring channel 422 of the latch between the first latch portion 423 and the second latch portion 424. It can be understood that after the second pin portion 424 is set in the groove 4231 of the first pin portion 423, a gap 100 is provided between the weighing or bending sensor 44 and the second pin portion 424, allowing the weighing or bending sensor 44 to bend slightly between the first pin portion 423 and the second pin portion 424, so that when the user lifts the lifting rod 30 upward, the resistance value of the weighing or bending sensor 44 will change.

[0044] It is worth mentioning that by arranging the wider groove 42311 and the narrower groove 42322 in the first pin part 423, not only can the requirements of arranging the weighing or bending sensor 44 in the wider groove 42311 of the first pin part 423 and arranging the wire 45 in the narrower groove 42322 be met, but also the strength of the first pin part 423 can be ensured, thereby ensuring the weighing capacity of the pin 42, avoiding the bending of the pin 42, and further ensuring the reliability of the counterweight block pin 40.

[0045] It is worth mentioning that the connection method of the first latch portion 423 and the second latch portion 424 is not limited in the counterweight assembly of the present invention, as long as the second latch portion 424 is reliably retained in the groove 4231 of the first latch portion 423. For example, the first latch portion 423 and the second latch portion 424 can be welded, or the first latch portion 423 and the second latch portion 424 can be glued.

[0046] Furthermore, the handle 41 has a handle receiving cavity 411 and an insertion hole 412 connected to the handle receiving cavity 411, the circuit board assembly 43 is received in the handle receiving cavity 411 of the handle 41, and one end of the pin 42 extends to the handle receiving cavity 411 through the insertion hole 412 of the handle 41. In this way, on the one hand, one end of the pin 42 can be set on the handle 41, so that the pin 42 extends outward from the handle 41, and on the other hand, the wire 45 can directly extend from the wiring channel 422 of the pin 42 to the handle receiving cavity 411 of the handle 41, so that the wire 45 connects the circuit board assembly 43 and the weighing or bending sensor 44, and on the other hand, the handle 41 can constrain the first pin part 423 and the second pin part 424 of the pin 42 in the entire circumferential direction to ensure the stability of the connection relationship between the first pin part 423 and the second pin part 424.

[0047] Furthermore, the handle 41 includes a handle body 413 and a handle cover 414, the handle body 413 has an assembly groove 4131, the insertion hole 412 of the handle 41 is formed in the handle body 413, and the insertion hole 412 is connected to the assembly groove 4131 of the handle body 413. After the circuit board assembly 43 is set in the assembly groove 4131 of the handle body 413, the handle cover 414 is covered on the handle body 413 to close the notch of the assembly groove 4131 of the handle body 413. In this way, the handle 41 forms the handle accommodating cavity 411 between the handle body 413 and the handle cover 414 for accommodating the circuit board assembly 43.

[0048] Reference Attachment Figure 6 、 Figure 7 、 Figure 8 and Figure 9The circuit board assembly 43 includes a circuit board 431, a battery 432, and a processor 433 (e.g., an MCU) mounted on the circuit board 431. The battery 432 can supply power to the processor 433 via the circuit board 431. The weighing or bending sensor 44 is connected to the circuit board 431 via the wire 45. In some embodiments of the weight assembly of the present invention, the processor 433 can be a near-field communication module integrated with a Bluetooth module or a Wi-Fi module. In this way, the processor 433 can transmit the resistance value fed back by the weighing or bending sensor 44, or the processing result of the processor 433 based on the resistance value fed back by the weighing or bending sensor 44, to an external computing device via the near-field communication module. In other embodiments of the weight assembly of the present invention, a separate near-field communication module can also be mounted on the circuit board 431.

[0049] Continue to refer to the attached Figure 7 、 Figure 9 and Figure 10 The counterweight latch 40 further includes an accelerometer 46, which can be mounted on the circuit board 431 of the circuit board assembly 43. When a user uses the weight-bearing fitness equipment equipped with the counterweight assembly to exercise, the accelerometer 46 of the counterweight latch 40 can obtain the speed and / or speed change of the user lifting the counterweight 20, and can subsequently obtain the speed and / or speed change. Optionally, in other examples of the counterweight assembly of the present invention, the accelerometer 46 can also be set on the latch 42. In this case, the accelerometer 46 and the circuit board 431 need to be connected through the wire 45.

[0050] Furthermore, the circuit board assembly 43 includes an interface 434, which is mounted on the circuit board 431, wherein the handle 41 has an interface hole 415, and the interface hole 415 is connected to the handle receiving cavity 411, and the interface 434 extends to the interface hole 415 of the handle 41, so that the external power supply 200 can supply power to the battery 432 via the interface 434 and the circuit board 431.

[0051] Further, please refer to the attached Figures 7 to 10 、 Figure 12The counterweight latch 40 includes a ring 47 that is fitted over the end of the latch 42 for insertion into the insertion hole 412 of the handle 41. The ring 47 can constrain the first latch portion 423 and the second latch portion 424 of the latch 42 along the entire circumferential direction, ensuring the stability of the connection between the first latch portion 423 and the second latch portion 424. Furthermore, the ring 47 can adjust the length of the portion of the latch 42 located outside the handle 41 to meet the length requirements of different manufacturers for the portion of the latch 42 located outside the handle 41. Preferably, the handle body 413 has a handle slot 4132, and the ring 47 is located in the handle slot 4132 of the handle body 41.

[0052] Specifically, one end of the first latch portion 423 has a first insertion section 4230, and one end of the second latch portion 424 has a second insertion section 4240. The first insertion section 4230 of the first latch portion 423 and the second insertion section 4240 of the second latch portion 424 are used to form an insertion end 4201 of the latch 42. The outer diameter of the insertion end 4201 of the latch 42 is smaller than the outer diameter of the main body 4202. The ring body 47 has a ring body through hole 471, and the inner diameter of the ring body 47 is smaller than the outer diameter of the main body 4202. The outer diameter of the inserting end 4201 of the latch 42 is consistent with that of the inserting end 4201 of the latch 42. The inserting end 4201 of the latch 42 passes through the ring body through-hole 471 of the ring body 47, so that the ring body 47 is fitted over the end of the latch 42 for inserting into the inserting hole 412 of the handle 41. In this way, the ring body 47 can restrain the first inserting section 4230 of the first latch part 423 and the second inserting section 4240 of the second latch part 424, ensuring that the first latch part 423 and the second latch part 424 are securely installed. Preferably, the ring body 47 is a metal ring or an alloy ring to ensure the structural strength of the ring body 47. When assembling the counterweight latch 40, the length of the portion of the latch 42 located outside the handle 41 can be adjusted by replacing the ring body 47 with a different size to meet the length requirements of different manufacturers for the portion of the latch 42 located outside the handle 41.

[0053] Those skilled in the art will appreciate that the embodiments of the present invention described above and shown in the accompanying drawings are intended to be illustrative only and are not intended to limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and illustrated in the embodiments. Any variations or modifications may be made to the embodiments of the present invention without departing from the principles described.

Claims

1. Counterweight latch, characterized in that: include: handle; a latch, wherein the latch extends outward from the handle and is capable of being inserted into the insertion hole of the counterweight; a circuit board assembly, wherein the circuit board assembly is disposed on the handle; as well as A load cell or bending sensor is provided on the latch and connected to the circuit board assembly.

2. The counterweight latch according to claim 1, wherein the latch has a latch receiving cavity and a wiring channel, the latch receiving cavity is located in the middle of the latch, and the wiring channel extends from the latch receiving cavity to the end of the latch where the handle is provided, wherein the weighing or bending sensor is provided in the latch receiving cavity of the latch, and the wires for connecting the weighing or bending sensor and the circuit board assembly are laid in the wiring channel of the latch.

3. The counterweight pin according to claim 2, wherein the pin comprises a first pin part and a second pin part, the first pin part and the second pin part are mounted on each other to form the pin receiving cavity and the wiring channel between the first pin part and the second pin part, and there is a gap between the weighing or bending sensor and the second pin part.

4. The counterweight latch according to claim 3, wherein the first latch portion has a groove, the groove having a wider groove located in the middle of the first latch portion and a narrower groove extending from the wider groove to the end of the first latch portion, the second latch portion is arranged in the groove of the latch portion, the wider groove of the groove forms the latch receiving cavity of the latch between the first latch portion and the second latch portion, and the narrower groove of the groove forms the wiring channel of the latch between the first latch portion and the second latch portion.

5. The counterweight latch according to any one of claims 1 to 4, wherein the handle has a handle receiving cavity and an insertion hole connected to the handle receiving cavity, the circuit board assembly is received in the handle receiving cavity of the handle, and one end of the latch extends to the handle receiving cavity through the insertion hole of the handle.

6. The counterweight latch according to claim 5, wherein the handle comprises a handle body and a handle cover, the handle body has an assembly groove, the insertion hole of the handle is formed in the handle body, and the insertion hole is connected to the assembly groove of the handle body, the handle cover is arranged in the assembly groove of the handle body, and the handle forms the handle receiving cavity between the handle body and the handle cover. 7 . The counterweight latch according to claim 5 , wherein the circuit board assembly comprises a circuit board, and a battery and a processor disposed on the circuit board.

8. The counterweight latch according to claim 7, wherein the counterweight latch comprises an accelerometer, and the accelerometer is mounted on the circuit board.

9. The counterweight latch according to claim 7, wherein the circuit board assembly includes an interface, the interface is mounted on the circuit board, wherein the handle has an interface hole, the interface hole is connected to the handle receiving cavity, and the interface extends to the interface hole of the handle.

10. The counterweight assembly is characterized in that: include: A guide rod, wherein the guide rod is configured to extend in a vertical direction; A plurality of counterweight blocks, wherein each of the counterweight blocks is stacked and configured to be guided in a movement direction by the guide rod, wherein each of the counterweight blocks has a lifting through-hole and an insertion hole, wherein the lifting through-hole passes through the thickness direction of the counterweight block, and the insertion hole passes through the width direction of the counterweight block, and the lifting through-hole and the insertion hole are in communication; A lifting rod, wherein the lifting rod has a rod body through-hole, the bottom end of the lifting rod can be inserted into the lifting through-holes of the counterweight blocks, and the rod body through-hole of the lifting rod is in communication with the insertion hole of at least one counterweight block; and The counterweight latch according to any one of claims 1 to 9, wherein the latch of the counterweight latch is configured to be inserted into the insertion hole of one of the counterweights and the rod body through-hole of the lifting rod.

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