Conductive connection module and electric tool
By using multiple conductive contacts and contacts in the conductive connection module of the power tool, the problem of large heat generation of the battery power supply connection structure is solved, the reliability and stability of the power supply are improved, and the service life is extended. Reduced safety hazards.
Patent Information
- Application Number
- CN202323560775.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-26
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2033-12-26
AI Technical Summary
The battery cell power supply connection structure in existing power tools has a large heat generation, resulting in a reduced service life and a safety hazard.
Design a conductive connection module, by setting a plurality of conductive contacts in the loading part of the joint assembly and setting corresponding conductive contact sheets inside the connection assembly, increasing the contact area, reducing the conductivity internal resistance, reducing the heating energy loss, and When one contact fails abnormally, the other contact can remain on, ensuring power supply reliability.
By increasing the contact area and the design of conductive contacts and contact plates, the conductive heat generation is reduced, the reliability and stability of power supply is improved, the service life is extended, and safety hazards are reduced.
Smart Images
Figure CN222261426U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of electric tools, and in particular relates to a conductive connection module and an electric tool. Background Art
[0002] At present, handheld power tools are usually wireless for ease of use, such as electric screwdrivers, which requires the battery to be integrated into the tool. However, the battery cells in current power tools are usually connected to the tool body as a handheld component.
[0003] In the current connection structure, since the battery cell needs to be electrically connected to the motor in the tool body during the connection process, there are usually snap-fitting contacts and contact points in the connection structure. The contacts and contact points are in contact and conductive, and the contacts and contact points are crimped and fixed using the snap-fit structure. However, in some occasions where a high current of 20A is required for power supply, the use of previous contacts and contact points for power supply usually causes increased heat generation at the conductive joint, which in the long run reduces the service life. In addition, if the contacts and contact points are loose or not fully engaged, it will further lead to certain safety hazards and affect the normal use of the tool. Utility Model Content
[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a conductive connection module for solving the problem of high heat generation in the previous power supply connection structure of the battery core.
[0005] The utility model solves the above technical problems with the following technical solutions: a conductive connection module, comprising:
[0006] A connector assembly, the bottom of which is provided with a loading portion, and the loading portion is provided with no less than one conductive contact;
[0007] The connecting component has a conductive contact sheet corresponding to the conductive contact arranged inside, the conductive contact sheet is provided with a conductive surface abutting and contacting with the conductive contact, and the number of the conductive surfaces is the same as the number of the conductive contacts.
[0008] Compared with the prior art, the above technical solution has the following beneficial effects:
[0009] By arranging a conductive contact on the loading part of the connector assembly and arranging a conductive contact piece inside the connecting assembly, after the loading part is extended into the connecting assembly and fits into place, the conductive contact contacts the conductive contact piece. By arranging more than one conductive contact and conductive contact piece, the connection area is increased. Compared with the previous connection method with only one contact, the contact area is increased, the conductive internal resistance is reduced, and the energy loss caused by conductive heat is reduced. At the same time, when one of the contacts fails abnormally, the other contact can still remain connected to provide normal power supply to the functional module, thereby improving the reliability of power supply.
[0010] Furthermore, the conductive contact comprises a first contact and a second contact, and the conductive contact piece is bent to form a first conductive surface that contacts the first contact and a second conductive surface that contacts the second contact respectively.
[0011] Further, the first contact is arranged on the rotating circumferential surface of the loading portion, and the second contact is located on an adjacent side of the first contact close to the conductive contact sheet.
[0012] Furthermore, it also includes a limiting platform arranged inside the connecting assembly, and the limiting platform includes:
[0013] a first assembly surface on which the first conductive surface matching the rotating circumferential surface of the loading portion is mounted;
[0014] The second assembly surface is adjacent to the first assembly surface, on which the second conductive surface is mounted. The second assembly surface is used to block the assembly portion at the end position of movement, so that the second conductive surface contacts the second contact and the first contact contacts the first conductive surface.
[0015] Furthermore, a first contact surface contacting the first conductive surface is formed on the first contact, and a second contact surface contacting the second conductive surface is formed on the second contact.
[0016] Furthermore, the area of the first contact surface and the second contact surface is not less than 2.4 mm 2 .
[0017] Furthermore, the loading part includes a connecting column and a loading end arranged on the outer periphery of the connecting column and cooperating with the limit platform, and positioning holes for fixing the first contact and the second contact are respectively opened at the distal end of the loading end and the side close to the limit platform, and the first contact and the second contact extend out of the positioning holes.
[0018] Further, the conductive contact is a ring-shaped conductive strip disposed in the loading portion, and the conductive strip is bent in sequence to form the first contact and the second contact.
[0019] This embodiment also discloses an electric tool, which includes the above-mentioned conductive connection module. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0021] Figure 1 It is a schematic diagram of the explosion structure of the utility model.
[0022] Figure 2 It is a schematic diagram of the overall front view structure of the utility model.
[0023] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure along the AA axis.
[0024] Figure 4 It is a front view structural schematic diagram of the joint assembly in the utility model.
[0025] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure along the BB axis.
[0026] Reference numerals:
[0027] 1. Joint assembly; 2. Connection assembly;
[0028] 3. Loading part; 4. Conductive contact; 5. First contact; 6. Second contact;
[0029] 301, connecting column; 302, loading end;
[0030] 7. Limiting platform; 8. Conductive contact piece; 9. First conductive surface; 10. Second conductive surface;
[0031] 701, first assembly surface; 702, second assembly surface;
[0032] 11. first contact surface; 12. second contact surface;
[0033] 13. Positioning hole; DETAILED DESCRIPTION
[0034] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.
[0035] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.
[0036] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0037] In addition, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present utility model, the meaning of "plurality" is more than two, unless otherwise clearly and specifically limited.
[0038] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.
[0039] Example 1
[0040] like Figure 1-5 As shown, the utility model provides a conductive connection module, which includes: a connector assembly 1 and a connection assembly 2, wherein the connector assembly 1 is fixed on the tool body, and the connection assembly 2 can be used to connect the battery cell and the protective shell, etc., so as to facilitate the connection and fixation with the connector assembly 1 on the tool body.
[0041] A loading part 3 is provided at the bottom of the connector assembly 1, and the loading part 3 is used to cooperate with the connecting assembly 2, and at least one conductive contact 4 is provided on the loading part 3; a limiting platform 7 for cooperating with the loading part 3 is provided inside the connecting assembly 2, and a conductive contact 8 is provided on the limiting platform 7, and a conductive surface that abuts and contacts the conductive contact 4 is provided on the conductive contact 8, and the number of conductive surfaces is the same as the number of conductive contacts. After the loading part 3 extends into the connecting assembly 2 and cooperates with the limiting platform 7 therein, the conductive contact 4 on the loading part 3 and the conductive surface of the conductive contact 8 on the limiting platform 7 correspond and are tightly connected.
[0042] Specifically, the conductive contact 4 comprises a first contact 5 and a second contact 6, and the conductive contact piece 8 is bent to form a first conductive surface 9 which contacts the first contact 5 and a second conductive surface 10 which contacts the second contact 6 respectively. The two conductive surfaces are respectively contacted and connected with the two contacts, and the two conductive surfaces are formed by bending the conductive contact piece 8 to contact the two contacts, thereby increasing the contact area.
[0043] In this embodiment, based on the loading part 3 being rotated to cooperate with the conductive contact piece 8, the conductive contact piece 8 has two bent conductive surfaces, and the first contact 5 and the second contact 6 are adjacently arranged on the loading part 3. After being rotated into place, the two adjacent contacts are conveniently contacted and connected with the two conductive surfaces respectively.
[0044] By arranging a conductive contact 4 having a first contact 5 and a second contact 6 on the loading part 3 of the connector assembly 1, and arranging a conductive contact piece 8 on the limiting platform 7 of the connecting assembly 2, after the loading part 3 and the limiting platform 7 are in place, the first contact 5 and the second contact 6 are in contact with the conductive contact piece 8 at the same time. By simultaneously interference fitting the two contacts with the conductive contact piece 8, the connection area is increased. Compared with the previous connection method with only one contact, the contact area is increased, the conductive internal resistance is reduced, and the energy loss caused by conductive heat generation is reduced. At the same time, when one of the contacts fails abnormally, the other contact can still remain connected to provide normal power supply to the functional module, thereby improving the reliability of power supply.
[0045] The first contact 5 is arranged on the rotating circumferential surface of the loading part 3, that is, the first contact 5 is located on the outer surface of the loading part 3, and the second contact 6 is located on the side of the first contact 5 close to the conductive contact piece 8; when the loading part 3 rotates to the right position, the second contact 6 contacts the first conductive surface 9 of the conductive contact piece 8 on the limiting platform 7, and the first contact 5 also contacts the first conductive surface 9 on the conductive contact piece 8, thereby realizing connection between the contacts and the conductive surfaces from two different directions, thereby increasing the conductive contact area.
[0046] Correspondingly, the limiting platform 7 includes: a first assembly surface 701 and a second assembly surface 702 , and the first conductive surface 9 and the second conductive surface 10 are respectively mounted on the two assembly surfaces.
[0047] That is, the first assembly surface 701 is provided with the first conductive surface 9 matched with the rotating circumferential surface of the loading portion 3 ; the second assembly surface 702 is adjacent to the first assembly surface 701 , and the second conductive surface 10 is provided thereon.
[0048] The first contact 5 and the second contact 6 are arranged adjacent to each other, and the two conductive surfaces formed by the bending of the conductive contact piece 8 form a certain angle and are in direct contact with the two contacts respectively. When the loading part 3 is in the initial position, the conductive contact 4 thereon is not connected with the conductive contact piece 8 and is in a disconnected state. When the loading part 3 moves to the terminal position, the conductive contact 4 thereon needs to be connected with the conductive contact piece 8 and is in a connected state. The second assembly surface 702 is arranged at the terminal position, which plays a blocking and limiting role while being able to complete the connection and conduction at the terminal position. Therefore, at this time, when the second assembly surface 702 blocks the assembly part from being in the terminal position of movement, the second conductive surface 10 is in contact with the second contact 6, and the first contact 5 is in contact with the first conductive surface 9.
[0049] In this embodiment, a first contact surface 11 in contact with the first conductive surface 9 is formed on the first contact 5, and a second contact surface 12 in contact with the second conductive surface 10 is formed on the second contact 6. The contact between the two contacts and the two conductive surfaces is set to be surface contact, which increases the contact area, reduces the internal resistance, and reduces the heat generation.
[0050] The areas of the first contact surface 11 and the second contact surface 12 are not less than 2.4 mm 2 The double contacts combined with the contact area requirements on each contact effectively ensure the passage of large currents.
[0051] In this embodiment, the loading part 3 includes a connecting column 301 and a loading end 302 arranged on the periphery of the connecting column 301 and cooperating with the limiting platform 7. The distal end of the loading end 302 and the side close to the limiting platform 7 are respectively provided with positioning holes 13 for fixing the first contact 5 and the second contact 6. The first contact 5 and the second contact 6 extend out of the positioning holes 13. By opening the positioning holes 13 on the loading end 302, the contacts are fixed in the positioning holes 13. During the movement of the loading part 3, the stability of the contacts is effectively guaranteed, and accurate positioning is guaranteed when connected.
[0052] Moreover, the conductive contact 4 is an annular conductive strip arranged in the loading part 3, and the conductive strip is bent in sequence to form the first contact 5 and the second contact 6. The annular conductive strip that is surrounded as an integral whole is arranged in the loading part 3, so that the conductive contact 4 has a better elastic deformation effect, and the two contacts have a certain compression margin when in contact. The deformed annular conductive strip can press the bent contact onto the conductive surface, and can better make the conductive contact 4 contact and connect with the conductive contact piece 8 through interference fit, thereby ensuring the stability of the contact.
[0053] Example 2
[0054] This embodiment also discloses an electric tool, which includes the conductive connection module in Embodiment 1. The electric tool usually has a main body part for installing a motor, and a part for installing a battery cell. In this embodiment, the connector assembly 1 is located in the main body part, and the connection assembly 2 is located in the part for installing the battery cell. The two parts of the electric tool are connected by the conductive connection module, so that the electrical connection of the electric tool is more stable and reliable.
[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.
Claims
1. A conductive connection module, characterized in that: include: A connector assembly, the bottom of which is provided with a loading portion, and the loading portion is provided with no less than one conductive contact; The connecting component has a conductive contact sheet corresponding to the conductive contact arranged inside, the conductive contact sheet is provided with a conductive surface abutting and contacting with the conductive contact, and the number of the conductive surfaces is the same as the number of the conductive contacts.
2. The conductive connection module according to claim 1, characterized in that: The conductive contact comprises a first contact and a second contact, and the conductive contact piece is bent to form a first conductive surface that contacts the first contact and a second conductive surface that contacts the second contact respectively.
3. The conductive connection module according to claim 2, characterized in that: The first contact is disposed on a rotating circumferential surface of the loading portion, and the second contact is located on an adjacent side of the first contact close to the conductive contact sheet.
4. The conductive connection module according to claim 2, characterized in that: It also includes a limiting platform arranged inside the connecting assembly, and the limiting platform includes: a first assembly surface on which the first conductive surface matching the rotating circumferential surface of the loading portion is mounted; The second assembly surface is adjacent to the first assembly surface, on which the second conductive surface is mounted. The second assembly surface is used to block the assembly portion at the end position of movement, so that the second conductive surface contacts the second contact and the first contact contacts the first conductive surface.
5. The conductive connection module according to claim 2, characterized in that: A first contact surface that contacts the first conductive surface is formed on the first contact, and a second contact surface that contacts the second conductive surface is formed on the second contact.
6. The conductive connection module according to claim 5, characterized in that: The area of the first contact surface and the second contact surface is not less than 2.4 mm 2 .
7. The conductive connection module according to claim 4, characterized in that: The loading part includes a connecting column and a loading end arranged on the outer periphery of the connecting column and cooperating with the limiting platform. The distal end of the loading end and a side close to the limiting platform are respectively provided with positioning holes for fixing the first contact and the second contact, and the first contact and the second contact extend out of the positioning holes.
8. The conductive connection module according to claim 7, characterized in that: The conductive contact is a ring-shaped conductive strip disposed in the loading portion, and the conductive strip is bent in sequence to form the first contact and the second contact.
9. An electric tool, characterized in that: It comprises a conductive connection module as described in any one of claims 1 to 8.