Battery welding device

Abstract

The invention relates to the technical field of battery welding, in particular to a battery welding device which comprises a machine body, a first electrode is arranged at the bottom of the machine body, and a second electrode located above the first electrode is further arranged on the machine body. The machine body is provided with an electric push rod used for driving the pressing plate to move, and the second electrode is arranged on the pressing plate. The device has the beneficial effects that when the rotating shaft rotates, under the cooperation of the guide block and the guide groove, the adjusting block can move in the connecting groove, the adjusting block moves close to the rotating shaft, the distance between the inner bottom of the adjusting block and the bottom of the connecting block can be reduced, and the compression degree of the spring can be increased; the spring force provided by the spring to the connecting block is increased; when the driving assembly drives the electrode welding needle to rotate, the spring force borne by the electrode welding needle can be synchronously increased, and the electrode welding needle can be conveniently separated from the shell.

Description

Technical Field

[0001] The present invention relates to the technical field of battery welding, and in particular to a battery welding device. Background Art

[0002] In the manufacturing of new energy devices such as lithium batteries and power batteries, the welding process is a core step in determining the electrical conductivity and structural stability of battery packs. Currently, the battery welding devices widely used in the industry often utilize a rotary mechanical design for their desoldering mechanism. After welding is completed by contacting the electrode material with the welding needle, the needle is reset by the elastic deformation of a spring assembly. However, existing technologies have a significant drawback: the spring force remains fixed during operation and cannot be adjusted in real time based on the operating status of the rotating mechanism.

[0003] In actual working conditions, the dynamic adjustment of the separation and desoldering speed (for example, the difference in centrifugal force when switching from 200 rpm to 500 rpm) will cause the pre-set spring force to not match the real-time working condition requirements. The specific manifestations are:

[0004] Insufficient reset accuracy: When the spring force is too small, the soldering pin cannot be completely reset due to the centrifugal force during high-speed rotation, resulting in cold soldering or desoldering defects;

[0005] Although some improvement schemes have attempted to alleviate the above problems by adding spring preload bolts or replacing spring materials with different elastic moduli, their adjustment methods are still limited to static manual intervention and cannot achieve closed-loop control during the dynamic welding process.

[0006] Therefore, a battery welding device is needed to overcome the above problems. Summary of the Invention

[0007] In order to solve the above problems, an embodiment of the present invention provides a battery welding device, which achieves the purpose of solving the problems raised in the background technology.

[0008] In order to achieve the above objectives, the embodiments of the present invention specifically adopt the following technical solutions:

[0009] In order to realize the welding operation of the battery; the application proposes a battery welding device, including a body, an electrode 1 is provided at the bottom of the body, an electrode 2 located above the electrode 1 is further provided on the body, a pressure plate is slidably provided on the body, an electric push rod for driving the pressure plate to move is provided on the body, and the electrode 2 is provided on the pressure plate; a fixed plate is fixedly connected to the body, a rotating shaft is rotatably provided on the fixed plate, a connecting block is slidably provided inside the rotating shaft, and an electrode welding needle is provided inside the connecting block; the electrode 1 and the electrode 2 are respectively connected to external wires; when welding, the shell is placed on the electrode 1 at the bottom of the body, and the electric push rod is started to push the pressure plate downward so that the electrode 2 contacts the connecting block, thereby pushing the connecting block and the electrode welding needle downward. When the electrode welding needle contacts the shell, a passage is formed, and the contact part of the shell can be welded by the electrode welding needle;

[0010] In order to achieve separation after welding, the present application proposes a driving assembly for driving the electrode welding needle to rotate. The driving assembly is arranged on the machine body and can drive the rotating shaft to rotate and then drive the electrode welding needle to rotate. After the welding of the contact part of the electrode welding needle to the shell is completed, the driving assembly drives the rotating shaft to rotate, so that the electrode welding needle can rotate and separate the electrode welding needle from the shell.

[0011] In order to further achieve separation after welding, the present application proposes a reset component; the reset component is arranged on the rotating shaft, and is used to reset the electrode welding needle, that is, to separate the electrode welding needle from the shell; the reset component includes an adjustment block rotatably arranged inside the rotating shaft, and a spring arranged between the adjustment block and the connecting block; after the electrode welding needle action is completed, the driving component drives the rotating shaft to rotate, driving the adjustment block to move close to the rotating shaft, so that the spring is further compressed.

[0012] As a further improvement of the above technical solution:

[0013] The reset assembly also includes a connecting groove opened inside the rotating shaft, a spiral guide groove opened inside the adjusting block, a guide block fixedly connected to the connecting groove and sliding inside the guide groove, and a limiting column fixedly connected to the fixed plate and passing through the adjusting block; after the rotating shaft rotates, the adjusting block moves through the cooperation of the guide groove and the guide block.

[0014] The driving assembly includes a synchronous wheel 1 fixedly connected to the rotating shaft, a synchronous wheel 2 rotatably arranged on the fixed plate, a motor 1 arranged on the fixed plate for driving the synchronous wheel 2 to rotate, and a synchronous belt arranged between the synchronous wheel 1 and the synchronous wheel 2.

[0015] The guide groove is in a closed loop state; through the guide groove in the closed loop state, when the rotating shaft rotates, the adjusting block moves back and forth.

[0016] The driving assembly includes a gear fixedly connected to the rotating shaft, a gear rod slidably arranged on the fixed plate and meshing with the gear, a second motor arranged on the fixed plate, an eccentric disk fixedly connected to the second motor, and a connecting rod hingedly arranged between the gear rod and the eccentric disk;

[0017] After the motor 2 drives the eccentric disk to rotate, it drives the gear rod to reciprocate through the connecting rod, that is, drives the rotating shaft to reciprocate.

[0018] There are multiple bodies, and correspondingly there are multiple fixed plates and rotating shafts, and the gears on the multiple rotating shafts are all engaged with the gear rods.

[0019] The plurality of guide grooves are arranged into two groups, and the spiral directions of the guide grooves in the two groups are opposite.

[0020] The number of the gears is an even number and is not zero.

[0021] A rotating ring is rotatably provided inside the regulating block, and the spring abuts against one side of the rotating ring.

[0022] The beneficial effects of the embodiments of the present invention are:

[0023] According to the first embodiment of the driving assembly, when the rotating shaft rotates, the adjusting block can be moved inside the connecting groove under the cooperation of the guide block and the guide groove, so that the adjusting block moves closer to the rotating shaft, thereby reducing the distance between the bottom of the adjusting block and the bottom of the connecting block, thereby increasing the compression degree of the spring, that is, increasing the spring force provided by the spring on the connecting block; that is, when the driving assembly drives the electrode welding pin to rotate, the spring force exerted on the electrode welding pin can be synchronously increased, thereby facilitating the separation of the electrode welding pin from the housing;

[0024] According to the first embodiment of the guide groove, when the rotating shaft rotates, the guide block and the guide groove cooperate to allow the adjustment block to reciprocate and extend within the connecting groove, thereby reciprocatingly changing the distance between the adjustment block and the bottom of the connecting block, i.e., reciprocatingly adjusting the degree of compression of the spring, i.e., reciprocatingly changing the spring force provided by the spring on the connecting block, thereby causing the connecting block and the electrode welding pin to vibrate, thereby facilitating the separation of the electrode welding pin from the welding position of the shell;

[0025] In another embodiment of the present application used in conjunction with the second embodiment of the drive assembly, multiple bodies are provided, so that welding can be performed on multiple shells at the same time, and multiple rotating shafts are driven by a set of drive assemblies; when the second motor drives the eccentric disk to rotate, the connecting rod can drive the gear rod to reciprocate, and the multiple gears can simultaneously drive the multiple rotating shafts to reciprocate; that is, the purpose of driving the electrode welding needles at multiple workstations to rotate can be achieved through a set of drive assemblies, which is convenient for practical use;

[0026] The two sets of guide grooves with opposite spiral directions can reduce the load on the gear rod when it moves, making it easier for the second motor to drive the gear rod to slide back and forth on the fixed plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic structural diagram of a first perspective embodiment of a drive assembly of the present invention;

[0028] Figure 2 A schematic structural diagram of a first embodiment of a driving assembly according to the present invention from a second perspective;

[0029] Figure 3 is a schematic cross-sectional view of a first embodiment of a drive assembly of the present invention;

[0030] Figure 4 Schematic cross-sectional view of embodiment 1 of the guide groove of the present invention;

[0031] Figure 5 This is a schematic structural diagram of a second embodiment of a drive assembly according to the present invention from a first perspective;

[0032] Figure 6 A schematic structural diagram of a second perspective of a second embodiment of a drive assembly of the present invention;

[0033] Figure 7 is a cross-sectional schematic diagram of the first perspective of two sets of guide grooves with opposite spiral directions in the present invention;

[0034] Figure 8 It is a cross-sectional schematic diagram of the two groups of guide grooves with opposite spiral directions in the present invention from a first perspective.

[0035] In the figure: 1, body; 2, electrode 1; 3, electrode 2; 4, pressure plate; 5, electric push rod; 6, fixed plate; 7, rotating shaft; 8, connecting block; 9, electrode welding pin; 10, driving assembly; 11, reset assembly; 12, rotating ring; 13, limit block; 14, limit slot;

[0036] 101. Synchronous pulley 1; 102. Synchronous pulley 2; 103. Motor 1; 104. Synchronous belt; 105. Gear; 106. Rack; 107. Motor 2; 108. Eccentric disk; 109. Connecting rod;

[0037] 111. Adjusting block; 112. Spring; 113. Connecting groove; 114. Guide groove; 115. Guide block; 116. Limiting column. DETAILED DESCRIPTION

[0038] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0039] See also Figure 1-2 The present invention discloses a battery welding device, which shows a body 1, an electrode 1 2 and an electrode 2 3 provided on the body 1. After the shell is placed on the electrode 1 2, the electric push rod 5 provided on the body 1 pushes the pressing plate 4 to move on the body 1, so that the electrode 2 3 provided on the pressing plate 4 moves downward, so that the electrode 2 3 contacts and squeezes the connecting block 8, so that the connecting block 8 slides inside the rotating shaft 7 and moves downward, so that the electrode welding needle 9 contacts the shell and welds the shell;

[0040] After welding is completed, the driving assembly 10 drives the rotating shaft 7 provided on the fixed plate 6 to rotate, thereby driving the electrode welding needle 9 to rotate, and the rotating electrode welding needle 9 is easily separated from the welding position of the shell;

[0041] The connection block 8 is fixedly connected to the limit block 13, and the interior of the rotating shaft 7 is provided with a limit slot 14. The limit block 13 can slide inside the limit slot 14, that is, when the rotating shaft 7 rotates, the connection block 8 can be driven to rotate, and the connection block 8 can slide inside the rotating shaft 7.

[0042] During rotation, the reset is performed by the reset assembly 11 , specifically, the spring 112 inside the adjustment block 111 provides an upward spring force to the connection block 8 , so that the electrode welding needle 9 separates from the shell and moves upward to reset.

[0043] See also Figure 3-4 , which shows a specific embodiment of the reset assembly 11, specifically: a spiral guide groove 114 is provided inside the adjustment block 111, a connecting groove 113 is provided inside the rotating shaft 7, and a protruding guide block 115 is provided inside the connecting groove 113, so that the guide block 115 can slide inside the guide groove 114;

[0044] When the rotating shaft 7 rotates, the adjusting block 111 cannot rotate due to the limiting action of the limiting column 116 , and the adjusting block 111 moves inside the connecting groove 113 under the cooperation of the guide groove 114 and the guide block 115 .

[0045] See also Figure 3-4, which shows a first embodiment of the drive assembly 10 and a first embodiment of the guide groove 114 used in conjunction with the first embodiment of the drive assembly 10. The first embodiment of the drive assembly 10 specifically comprises: a first synchronous wheel 101 is fixedly connected to the portion of the rotating shaft 7 protruding from the fixed plate 6, a first motor 103 mounted on the fixed plate 6 drives the second synchronous wheel 102 to rotate, and then a synchronous belt 104 wound around the outside of the first synchronous wheel 101 and the second synchronous wheel 102 drives the first synchronous wheel 101 to rotate;

[0046] When the rotating shaft 7 rotates, the guide block 115 and the guide groove 114 cooperate to make the adjustment block 111 move inside the connecting groove 113, so that the adjustment block 111 moves closer to the rotating shaft 7, thereby reducing the distance between the bottom of the adjustment block 111 and the bottom of the connecting block 8, thereby increasing the compression degree of the spring 112, that is, increasing the spring force provided by the spring 112 on the connecting block 8; that is, when the driving assembly 10 drives the electrode welding pin 9 to rotate, the spring force exerted on the electrode welding pin 9 can be synchronously increased, thereby facilitating the separation of the electrode welding pin 9 from the housing;

[0047] The first embodiment of the guide groove 114 is specifically as follows: the guide groove 114 is a spiral structure in a closed loop state, that is, the guide groove 114 is formed by splicing two symmetrical spiral structures, so that the relative motion trajectory of the guide block 115 and the guide groove 114 is in a closed loop state; that is, when the rotating shaft 7 rotates, under the cooperation of the guide block 115 and the guide groove 114, the adjustment block 111 can be reciprocated and telescopically moved inside the connecting groove 113, that is, the distance between the adjustment block 111 and the bottom of the connecting block 8 can be reciprocated, that is, the compression degree of the spring 112 can be reciprocated, that is, the spring force provided by the spring 112 on the connecting block 8 can be reciprocated, so that the connecting block 8 and the electrode welding needle 9 can be vibrated, thereby facilitating the separation of the electrode welding needle 9 from the welding position of the shell;

[0048] That is, while the electrode welding needle 9 is driven to rotate by the driving assembly 10 , the electrode welding needle 9 can be vibrated, so as to facilitate separation of the electrode welding needle 9 from the housing.

[0049] See also Figure 5-6, which shows a second embodiment of the drive assembly 10 and a second embodiment of the guide groove 114 used in conjunction with the second embodiment of the drive assembly 10; the second embodiment of the drive assembly 10 is specifically as follows: a connecting gear 105 is fixed on the rotating shaft 7, a gear rod 106 is slidably set on the fixed plate 6, and a crank-connecting rod mechanism is formed by the eccentric disk 108 and the connecting rod 109. When the motor 2 107 drives the eccentric disk 108 to rotate, the gear rod 106 can be driven to reciprocate through the connecting rod 109, that is, the rotating shaft 7 is driven to reciprocate through the gear 105; under the cooperation of the guide block 115 and the guide groove 114, the adjustment block 111 can be reciprocated and telescopically moved inside the connecting groove 113, that is, the distance between the adjustment block 111 and the bottom of the connecting block 8 can be reciprocated, that is, the compression degree of the spring 112 can be reciprocated, that is, the spring force provided by the spring 112 to the connecting block 8 can be reciprocated, so that the connecting block 8 and the electrode welding needle 9 can be vibrated, so as to facilitate the separation of the electrode welding needle 9 from the welding position of the shell;

[0050] When the motor 2 107 is started, it first drives the rotating shaft 7 to rotate in a certain direction. At this time, under the cooperation of the guide block 115 and the guide groove 114, the adjustment block 111 is moved close to the rotating shaft 7, thereby increasing the compression degree of the spring 112, that is, increasing the spring force exerted on the electrode welding pin 9, so as to facilitate the separation of the electrode welding pin 9 from the shell; when the rotating shaft 7 rotates and reverses, the adjustment block 111 moves to the maximum limit, that is, the spring force exerted on the electrode welding pin 9 is the maximum value; after the rotating shaft 7 rotates and reverses, the adjustment block 111 moves away from the rotating shaft 7, thereby reducing the compression degree of the spring 112, that is, reducing the spring force exerted on the electrode welding pin 9; when the rotating shaft 7 rotates and reverses again, the adjustment block 111 moves to the minimum limit, that is, the spring force exerted on the electrode welding pin 9 is the minimum value; through the rotation of the motor 2 107, the electrode welding pin 9 is caused to reciprocate between the maximum spring force and the minimum spring force, thereby causing the electrode welding pin 9 to vibrate.

[0051] See also Figure 5-6 , which shows another embodiment of the present application used in conjunction with the second embodiment of the drive component 10, which is specifically: multiple bodies 1 are set, which can be used for welding multiple shells at the same time, and multiple rotating shafts 7 are driven by a set of drive components 10; when the motor 2 107 drives the eccentric disk 108 to rotate, the connecting rod 109 can drive the gear rod 106 to reciprocate, that is, multiple gears 105 can be used to simultaneously drive the multiple rotating shafts 7 to reciprocate; that is, a set of drive components 10 can achieve the purpose of driving the electrode welding needles 9 at multiple workstations to rotate, which is convenient for practical use.

[0052] See also Figure 7-8, which shows two groups of guide grooves 114 with opposite spiral directions. When in use, in the initial state, the guide block 115 inside one group of guide grooves 114 is located at the extreme position end of the guide groove 114, and the guide block 115 inside the other group of guide grooves 114 is located at the other extreme position end of the guide groove 114; that is, when the gear rod 106 moves to drive the multiple rotating shafts 7 to rotate, the adjusting block 111 corresponding to one group (set as group A) of guide grooves 114 moves close to the rotating shaft 7, and the adjusting block 111 corresponding to the other group (set as group B) of guide grooves 114 moves away from the rotating shaft 7; at this time, when the adjusting block 111 in group A rotates, the spring 112 is compressed, that is, the adjusting block 111 When the adjusting block 111 in the group B rotates, the spring 112 rebounds, that is, the adjusting block 111 does not need to overcome the spring force of the spring 112 when moving. At the same time, under the cooperation of the guide groove 114 and the guide block 115, the spring force of the spring 112 can drive the adjusting block 111 to move, that is, drive the rotating shaft 7 to rotate, and push the gear rod 106 to move through the gear 105. At this time, the rotation resistance of the gear 105 in the group A and the driving force of the gear 105 in the group B offset each other, reducing the load on the gear rod 106 when it moves.

[0053] When the gear rod 106 moves in the opposite direction, the adjusting blocks 111 in the two groups AB move to the limit position, that is, the adjusting blocks 111 in the two groups AB perform reverse movement. At this time, the adjusting block 111 in the group A moves away from the rotating shaft 7, and the adjusting block 111 in the group B moves close to the rotating shaft 7, so that when the adjusting block 111 in the group A rotates, the spring 112 rebounds, that is, the adjusting block 111 does not need to overcome the spring force of the spring 112 when moving. At the same time, with the cooperation of the guide groove 114 and the guide block 115, the spring 112 The spring force can drive the adjustment block 111 to move, that is, drive the rotating shaft 7 to rotate, and push the gear rod 106 to move through the gear 105; at this time, when the adjustment block 111 in group B rotates, the spring 112 is compressed, that is, the adjustment block 111 needs to overcome the spring force of the spring 112 when moving, that is, the gear 105 in group A will cause resistance to the movement of the gear rod 106; at this time, the driving force of the gear 105 in group A and the rotational resistance of the gear 105 in group B offset each other, which can also reduce the load on the gear rod 106 when it moves;

[0054] That is, the two sets of guide grooves 114 with opposite spiral directions can reduce the load on the gear rod 106 when it moves, making it easier for the second motor 107 to drive the gear rod 106 to slide back and forth on the fixed plate 6.

[0055] The number of gears 105 is set to an even number that is not zero, that is, the number of gears 105 corresponding to the two sets of guide grooves 114 is equal, so that the driving force of one set of gears 105 and the rotational resistance of another set of gears 105 can offset each other, further reducing the load on the gear rod 106 when it moves.

[0056] See also Figure 4 , which shows another embodiment of the adjusting block 111, specifically: a rotating ring 12 is rotatably provided at the inner bottom of the adjusting block 111; but the adjusting block 111 moves inside the rotating shaft 7, the rotating shaft 7 rotates, and the adjusting block 111 does not rotate, so that relative rotation occurs between the rotating shaft 7 and the adjusting block 111, and the spring 112 abuts between the rotating shaft 7 and the adjusting block 111. When the rotating shaft 7 and the adjusting block 111 rotate relative to each other, a certain torsion is caused to the spring 112, so that the spring 112 causes a certain resistance to the relative rotation of the rotating shaft 7 and the adjusting block 111. The rotatable rotating ring 12 facilitates the release of the torsion of the spring 112, thereby facilitating relative rotation between the rotating shaft 7 and the adjusting block 111.

[0057] It should be noted that in the description of the present invention, terms such as "center, up, down, left, right, vertical, horizontal, inside, and outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. These terms are used solely for ease of description and are not intended to indicate or imply that the device or component described must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first, second, and third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0058] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "installed, connected, and connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0059] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion such that a process, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed or inherent to such process, article, or apparatus.

[0060] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A battery welding device, comprising a body, characterized in that: A pressing plate is slidably provided on the machine body, and an electric push rod is provided on the machine body for driving the pressing plate to move; A fixed plate is fixedly connected to the machine body, a rotating shaft is rotatably provided on the fixed plate, a connecting block is slidably provided inside the rotating shaft, and an electrode welding pin is provided inside the connecting block; The machine body is provided with a driving assembly for driving the rotating shaft to rotate, and the rotating shaft is provided with a resetting assembly for resetting the electrode welding needle; The reset assembly includes an adjustment block rotatably arranged inside the rotating shaft, and a spring arranged between the adjustment block and the connecting block; After the electrode welding needle moves, the driving assembly drives the rotating shaft to rotate, driving the adjustment block to move closer to the rotating shaft, so that the spring is further compressed.

2. The battery welding device according to claim 1, characterized in that: The reset assembly also includes a connecting groove provided in the rotating shaft, a spiral guide groove provided in the adjusting block, a guide block fixedly connected to the connecting groove and sliding in the guide groove, and a limiting column fixedly connected to the fixing plate and passing through the adjusting block; After the rotating shaft rotates, the adjusting block moves through the cooperation of the guide groove and the guide block.

3. The battery welding device according to claim 2, characterized in that: The driving assembly includes a synchronous wheel 1 fixedly connected to the rotating shaft, a synchronous wheel 2 rotatably arranged on the fixed plate, a motor 1 arranged on the fixed plate for driving the synchronous wheel 2 to rotate, and a synchronous belt arranged between the synchronous wheel 1 and the synchronous wheel 2.

4. The battery welding device according to claim 3, characterized in that: The guide groove is in a closed loop state; through the guide groove in the closed loop state, when the rotating shaft rotates, the adjusting block is caused to move back and forth.

5. The battery welding device according to claim 2, characterized in that: The driving assembly includes a gear fixedly connected to the rotating shaft, a gear rod slidably arranged on the fixed plate and meshing with the gear, a second motor arranged on the fixed plate, an eccentric disk fixedly connected to the second motor, and a connecting rod hingedly arranged between the gear rod and the eccentric disk; After the motor 2 drives the eccentric disk to rotate, it drives the gear rod to reciprocate through the connecting rod, that is, drives the rotating shaft to reciprocate.

6. The battery welding device according to claim 5, characterized in that: There are multiple bodies, and correspondingly there are multiple fixed plates and rotating shafts, and the gears on the multiple rotating shafts are all engaged with the gear rods.

7. The battery welding device according to claim 6, characterized in that: The plurality of guide grooves are arranged into two groups, and the spiral directions of the guide grooves in the two groups are opposite.

8. The battery welding device according to claim 7, characterized in that: The number of the gears is an even number and is not zero.

9. The battery welding device according to claim 1, characterized in that: A rotating ring is rotatably provided inside the regulating block, and the spring abuts against one side of the rotating ring.

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