Hardware sheet structure with combination of switch elastic sheet and battery elastic sheet

Abstract

The utility model discloses a switch elastic sheet and battery elastic sheet combined hardware sheet structure comprising a switch elastic sheet which is formed by punching and bending a first metal sheet with a first thickness. The switch elastic piece comprises a first body, a deformation arm integrally formed at one end of the first body, a guide connection arm integrally formed at the end of the deformation arm, a first arm body and a second arm body, the first arm body and the second arm body are located on the two sides of the deformation arm and integrally connected between the first body and the guide connection arm, and the other end of the first body is further fixedly connected with a battery elastic piece. The battery elastic sheet is formed by punching and bending a second metal sheet with a second thickness, and the second thickness is greater than the first thickness; the battery elastic sheet is inserted and fixed in the battery holder, and the other end, which is relatively connected with the switch elastic sheet, of the battery elastic sheet is bent to form an elastic contact arm which is in elastic contact with a battery electrode mounted in the battery holder. The switch elastic piece and the battery elastic piece are different in thickness so as to meet different use requirements, and the switch elastic piece and the battery elastic piece are assembled stably and large in contact area.

Description

Technical fields:

[0001] This utility model relates to the field of electrical accessories technology, and specifically to a hardware structure that combines a switch spring and a battery spring. Background technology:

[0002] An electric toothbrush is a new type of toothbrush that uses the rapid rotation or vibration of a motor core to generate high-frequency vibrations in the brush head. This instantly breaks down toothpaste into fine foam, which deeply cleans between teeth. At the same time, the vibration of the bristles promotes blood circulation in the mouth and has a massaging effect on the gum tissue.

[0003] Chinese utility model patent application number 202220169618.0 discloses a rotary electric toothbrush with overpressure protection, comprising a brush head assembly, a body, a sealing assembly, a motor assembly, and a battery assembly. A switch spring is provided on the body. Upon startup, the switch spring forms an electrical connection with the motor assembly and the battery assembly. The battery assembly includes a battery, a positive spring, a negative spring, and positive and negative springs. The positive and negative springs are supported by an inner bracket. The negative terminal of the motor is connected to the negative spring, and the switch spring is connected to the positive spring. The positive spring is connected to the switch spring and fixed by welding a wire at its end. This leads to several problems: because the wire at the end of the positive spring is small, the contact area with the switch spring is small, making welding difficult and increasing the risk of disconnection and connection failure; furthermore, the positive spring itself is inconvenient to install, as its tower shape results in an unstable structure when assembled with the bracket.

[0004] In view of this, the inventors have continuously made improvements to propose the following technical solution. Utility model content:

[0005] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a hardware sheet structure that combines a switch spring and a battery spring.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The hardware structure of the switch spring and battery spring combination includes a switch spring, which is made by stamping and bending a first metal sheet with a first thickness. The switch spring includes a first body, a deformable arm integrally formed at one end of the first body, a guide arm integrally formed at the end of the deformable arm, a first arm body and a second arm body located on both sides of the deformable arm and integrally connected between the first body and the guide arm. A battery spring is also fixedly connected to the other end of the first body. The battery spring is made by stamping and bending a second metal sheet with a second thickness, wherein the second thickness is greater than the first thickness. The battery spring is inserted and fixed in the battery holder, and the other end of the battery spring connected to the switch spring is bent to form an elastic contact arm for elastic contact with the battery electrode installed in the battery holder.

[0007] Furthermore, in the above technical solution, the battery spring includes a second body, a connecting portion bent at one end of the second body, and the elastic contact arm bent at the other end of the second body. The connecting portion is attached to and fixedly connected to the other end of the first body.

[0008] Furthermore, in the above technical solution, the connecting part is fixed to the other end of the first body by welding, or the connecting part is fixed to the other end of the first body by riveting, wherein the connecting part is stamped to form a protruding riveting part, and the riveting part passes through the riveting hole provided at the other end of the first body and is riveted and fixed to the outer edge of the riveting hole.

[0009] Furthermore, in the above technical solution, the end of the elastic contact arm is bent to form an outwardly raised portion, which is in pressure contact with the electrode of the battery.

[0010] Furthermore, in the above technical solution, the width between the two sides of the second body is greater than the width between the two sides of the elastic contact arm, and both sides of the second body have outwardly protruding cards punched out. After the second body is inserted into the slot of the battery holder, the cards are engaged and positioned with the inner wall of the slot.

[0011] Furthermore, in the above technical solution, parts of both the first arm and the second arm are bent to shorten the distance between the first body and the guide arm, and to drive the deformable arm to bend into an arc shape.

[0012] Furthermore, in the above technical solution, the guide arm is inclined relative to the first body; when the deformable arm protrudes upward and is positioned, the guide arm is pressed down; when the guide arm tilts upward, the deformable arm protrudes downward and is positioned.

[0013] Furthermore, in the above technical solution, the first arm body includes a first straight portion integrally connected to the first body, a first bent portion formed by bending upward along the end of the first straight portion, a second bent portion formed by bending downward along the end of the first bent portion, and a second straight portion bent horizontally along the end of the second bent portion, the second straight portion being integrally connected to the guide arm.

[0014] Furthermore, in the above technical solution, the structure of the second arm is the same as that of the first arm.

[0015] Furthermore, in the above technical solution, the first body is provided with multiple positioning holes.

[0016] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: The present invention uses a battery spring and a switch spring to fix together to form an inseparable whole, which is convenient for installation; wherein, the thickness of the switch spring is less than the thickness of the battery spring, so that the deformable arm that needs to be constantly deformed can deform better, and its strength requirement is not high, but rather its elastic deformation capability is required. The switch spring made of a relatively thin first metal sheet by stamping and bending can meet this requirement; the elastic contact arm of the battery spring does not need to generate electrical deformation continuously, but rather needs to have sufficient elasticity to ensure that the elastic contact arm forms a more stable elastic contact with the battery electrode installed in the battery holder. The battery spring made of a relatively thick second metal sheet by stamping and bending can meet this requirement. In addition, since both the battery spring and the switch spring are sheet-like structures, the contact area between the two is larger, the structure formed after assembly is more stable, welding or riveting is very convenient, and the risk of disconnection and conduction failure is not easy; the sheet-like structure of the battery spring can be better inserted and fixed in the battery holder, and the structure formed after assembly is also more stable. Attached image description:

[0017] Figure 1 This is a perspective view of the present invention;

[0018] Figure 2 This is a perspective view of the present invention from another angle;

[0019] Figure 3 This is a schematic diagram of the usage state of this utility model. Detailed implementation method:

[0020] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0021] See Figure 1-3 As shown, a hardware structure combining a switch spring and a battery spring is provided, which includes a switch spring 1 and a battery spring 2. The switch spring 1 and the battery spring 2 are fixedly connected and form an electrical connection.

[0022] This invention can be applied to electric toothbrushes.

[0023] The switch spring 1 is made by stamping and bending a first metal sheet with a first thickness. The switch spring 1 includes a first body 11, a deformable arm 13 integrally formed at one end of the first body 11, a guide arm 14 integrally formed at the end of the deformable arm 13, a first arm body 15 and a second arm body 16 located on both sides of the deformable arm 13 and integrally connected between the first body 11 and the guide arm 14. When the deformable arm 13 is positioned by protruding upwards, it is in the first state. When the guide arm 14 is pressed downwards, when the guide arm 14 is tilted upwards, the deformable arm 13 is positioned by protruding downwards. It is in the second state. The first state and the second state are the switch state. When the first state is the open state, the second state is the closed state. Conversely, when the first state is the closed state, the second state is the open state. The other end of the first body 11 is also fixedly connected to the battery spring 2, which is made by stamping and bending a second metal sheet with a second thickness. The second thickness is greater than the first thickness, that is, the thickness of the battery spring 2 is greater than the thickness of the switch spring 1. The battery spring 2 is inserted and fixed in the battery holder (not shown in the figure), and the other end of the battery spring 2 connected to the switch spring 1 is bent to form an elastic contact arm 21 for elastic contact with the battery electrode installed in the battery holder. In other words, this utility model uses a battery spring 2 and a switch spring 1 fixed together to form an inseparable whole, which facilitates installation. The thickness of the switch spring 1 is less than that of the battery spring 2, allowing the deformable arm 13, which requires continuous deformation, to deform better. Its strength requirement is not high, but rather strong elastic deformation capability is required. The switch spring 1, made of a relatively thin first metal sheet by stamping and bending, can meet this requirement. The elastic contact arm 21 of the battery spring 2 does not need to continuously generate electrical deformation, but rather needs to have sufficient elasticity to ensure a more stable elastic contact between the elastic contact arm 21 and the battery electrode installed in the battery holder. The battery spring 2, made of a relatively thick second metal sheet by stamping and bending, can meet this requirement. Furthermore, since both the battery spring 2 and the switch spring 1 are sheet-like structures, their contact area is larger, resulting in a more stable structure after assembly. Welding or riveting is very convenient, and the risk of disconnection and connection failure is less likely. The sheet-like structure of the battery spring 2 allows for better insertion and fixation in the battery holder, and the assembled structure is also more stable.

[0024] In actual use, the position of the deformable arm 13 corresponds to the off button 103 of the electric toothbrush, and the position of the guide arm 14 corresponds to the on button 102 of the electric toothbrush. When the on button 102 is pressed, the guide arm 14 is driven to tilt upward. At the same time, the deformable arm 13 protrudes downward and is positioned, thereby ensuring that the guide arm 14 contacts the conductive component 104 inside the electric toothbrush, so that the battery spring 2 is connected to the conductive component 104 inside the electric toothbrush. At this time, the deformable arm 13 presses against the off button 103, while the on button 102 is reset and forms a gap with the guide arm 14. When the on button 102 is pressed again, it cannot drive the guide arm 14 to reset. When the electric toothbrush needs to be turned off, press the off button 103. At this time, because the deformable arm 13 is pressed against the off button 103, the deformable arm 13 will be pressed down after the off button 103 is pressed, so that the deformable arm 13 protrudes upward and is positioned. At this time, the guide arm 14 is pressed down, so that the guide arm 14 is disengaged from the conductive element 104, so that the battery spring 2 is connected to the conductive element 104 in the electric toothbrush, thus achieving the effect of power off. At this time, the guide arm 14 will press against the on button 102. This can be repeated to achieve the purpose of power on and power off. Its structure is extremely simple. In other words, the switch spring 1 of this utility model is sheet-shaped, and its upward protrusion of the deformable arm 13 drives the guide arm 14 to press down, thereby achieving the closing action; the downward protrusion of the deformable arm 13 drives the guide arm 14 to tilt upward, or the tilting of the guide arm 14 drives the deformable arm 13 to protrude downward, thereby achieving the opening action. Combined with the on button 102 and the off button 103, it can achieve the purpose of power-on and power-off. Furthermore, the on button 102 and the off button 103 have a strong tactile feedback when pressed, and the separate on and off actions are achieved by the on button 102 and the off button 103, resulting in better conductivity and significantly improved service life. In addition, this utility model uses a metal switch spring to achieve the switching action, which has a small thickness and overall height, allowing for a reduction in the size of the electric toothbrush handle and providing sufficient design space.

[0025] The open button 102 and the close button 103 are respectively mounted on the first spring 105 and the second spring 106, and the first spring 105 and the second spring 106 are connected to the main body 107.

[0026] The battery spring 2 includes a second body 22, a connecting portion 23 bent at one end of the second body 22, and an elastic contact arm 21 bent at the other end of the second body 22. The connecting portion 23 is attached to and fixedly connected to the other end of the first body 11, and has a large contact area.

[0027] The specific assembly structure of the battery spring 2 and the switch spring 1 is as follows: the connecting part 23 is fixed to the other end of the first body 11 by riveting. The connecting part 23 is stamped to form a protruding riveting part 231. The riveting part 231 passes through the riveting hole 101 provided at the other end of the first body 11 and is riveted and fixed to the outer edge of the riveting hole 101. It is easy to install, and the structure after assembly is stable and has a large contact area.

[0028] In this embodiment, there are two of each of the riveting part 231 and the riveting hole 101, which are assembled in a one-to-one correspondence.

[0029] In some other embodiments, the specific assembly structure of the battery spring 2 and the switch spring 1 is as follows: the connecting part 23 is fixed to the other end of the first body 11 by welding.

[0030] The end of the elastic contact arm 21 is bent to form an outwardly raised portion 211, which makes contact with the battery electrode, resulting in better conduction.

[0031] A gap is formed between one side of the deformable arm 13 and the first arm body 15, and a gap is also formed between the other side of the deformable arm 13 and the first arm body 15.

[0032] Preferably, both the battery spring 2 and the switch spring 1 are made of stainless steel.

[0033] The first arm 15 and the second arm 16 are partially bent to shorten the distance between the first body 11 and the guide arm 14, and to drive the deformable arm 13 to bend into an arc shape. Specifically, the partial bending of the first arm 15 and the second arm 16 is to shorten their length and bring the first body 11 and the guide arm 14 closer together (i.e., shorten the distance between the first body 11 and the guide arm 14). At this time, the deformable arm 13 bends into an arc shape because its length remains unchanged.

[0034] The width between the two sides of the second body 22 is greater than the width between the two sides of the elastic contact arm 21, and the two sides of the second body 22 are punched to form outward protruding cards 221. After the second body 22 is inserted into the slot of the battery holder, the cards 221 are held and positioned with the inner wall of the slot.

[0035] The guide arm 14 is inclined relative to the first body 11; when the deformable arm 13 is positioned by protruding upward, the guide arm 14 is pressed down; when the guide arm 14 is tilted upward, the deformable arm 13 is positioned by protruding downward.

[0036] The first arm body 15 includes a first straight portion 151 integrally connected to the first body 11, a first bent portion 152 formed by bending upwards along the end of the first straight portion 151, a second bent portion 153 formed by bending downwards along the end of the first bent portion 152, and a second straight portion 154 bent horizontally along the end of the second bent portion 153. The second straight portion 154 is integrally connected to the guide arm 14. That is, the first bent portion 152 and the second bent portion 153 work together to shorten the distance of the first arm body 15.

[0037] The structure of the second arm 16 is the same as that of the first arm 15, and will not be described in detail here.

[0038] The first body 11 is provided with a plurality of positioning holes 111. Screws pass through the mounting holes 111 to fix the first body 11 inside the electric toothbrush, ensuring the stability of the installation of this utility model.

[0039] In summary, this utility model uses a battery spring 2 and a switch spring 1 fixed together to form an inseparable whole, which facilitates installation. The thickness of the switch spring 1 is less than that of the battery spring 2, allowing the deformable arm 13, which requires continuous deformation, to deform better. Its strength requirement is not high, but rather strong elastic deformation capability is required. The switch spring 1, made by stamping and bending a relatively thin first metal sheet, can meet this requirement. The elastic contact arm 21 of the battery spring 2 does not need to continuously generate electrical deformation, but rather requires sufficient elasticity to ensure a more stable elastic contact between the elastic contact arm 21 and the battery electrode installed in the battery holder. The battery spring 2, made by stamping and bending a relatively thicker second metal sheet, can meet this requirement. In addition, since both the battery spring 2 and the switch spring 1 are sheet-like structures, their contact area is larger, the structure formed after assembly is more stable, welding or riveting is very convenient, and there is less risk of disconnection and failure of the conductor; the battery spring 2 is sheet-like, which can be better inserted and fixed in the battery holder, and the structure formed after assembly is also more stable.

[0040] Of course, the above description is only a specific embodiment of the present utility model and is not intended to limit the scope of the present utility model. All equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model should be included in the scope of the claims of the present utility model.

Claims

1. A hardware sheet structure combining a switch spring and a battery spring, comprising a switch spring (1), wherein the switch spring (1) is formed by stamping and bending a first metal sheet having a first thickness, the switch spring (1) comprising a first body (11), a deformable arm (13) integrally formed at one end of the first body (11), a guide arm (14) integrally formed at the end of the deformable arm (13), a first arm body (15) and a second arm body (16) located on both sides of the deformable arm (13) and integrally connected between the first body (11) and the guide arm (14). Its features are: The other end of the first body (11) is also fixedly connected to a battery spring (2), which is made by stamping and bending a second metal sheet with a second thickness, wherein the second thickness is greater than the first thickness; the battery spring (2) is inserted and fixed in the battery holder, and the other end of the battery spring (2) connected to the switch spring (1) is bent to form an elastic contact arm (21) for elastic contact with the battery electrode installed in the battery holder.

2. The hardware structure of the combination of switch spring and battery spring according to claim 1, characterized in that: The battery spring (2) includes a second body (22), a connecting part (23) bent at one end of the second body (22), and the elastic contact arm (21) bent at the other end of the second body (22). The connecting part (23) is attached to and fixedly connected to the other end of the first body (11).

3. The hardware structure of the combination of switch spring and battery spring according to claim 2, characterized in that: The connecting part (23) is fixed to the other end of the first body (11) by welding, or the connecting part (23) is fixed to the other end of the first body (11) by riveting. The connecting part (23) is stamped to form a protruding riveting part (231). The riveting part (231) passes through the riveting hole (101) provided at the other end of the first body (11) and is riveted to the outer edge of the riveting hole (101).

4. The hardware structure of the combination of switch spring and battery spring according to claim 3, characterized in that: The end of the elastic contact arm (21) is bent to form an outwardly raised portion (211), which is in contact with the electrode of the battery.

5. A hardware structure combining a switch spring and a battery spring according to any one of claims 2-4, characterized in that: The width between the two sides of the second body (22) is greater than the width between the two sides of the elastic contact arm (21), and the two sides of the second body (22) are punched to form outward protruding cards (221). After the second body (22) is inserted into the slot of the battery holder, the cards (221) are held and positioned against the inner wall of the slot.

6. The hardware structure of the combination of switch spring and battery spring according to claim 5, characterized in that: The first arm (15) and the second arm (16) are partially bent to shorten the distance between the first body (11) and the guide arm (14) and to drive the deformable arm (13) to bend into an arc shape.

7. The hardware structure of the combination of switch spring and battery spring according to claim 6, characterized in that: The guide arm (14) is inclined relative to the first body (11); when the deformable arm (13) is positioned by protruding upward, the guide arm (14) is pressed down; when the guide arm (14) is tilted upward, the deformable arm (13) is positioned by protruding downward.

8. The hardware structure of the combination of switch spring and battery spring according to claim 5, characterized in that: The first arm body (15) includes a first straight portion (151) integrally connected to the first body (11), a first bent portion (152) formed by bending upward along the end of the first straight portion (151), a second bent portion (153) formed by bending downward along the end of the first bent portion (152), and a second straight portion (154) bent horizontally along the end of the second bent portion (153). The second straight portion (154) is integrally connected to the guide arm (14).

9. The hardware structure of the combination of switch spring and battery spring according to claim 8, characterized in that: The structure of the second arm (16) is the same as that of the first arm (15).

10. The hardware structure of the combination of switch spring and battery spring according to claim 5, characterized in that: The first body (11) is provided with multiple positioning holes (111).

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