Handle and wrench including same, mechanical tool

Abstract

The utility model provides a handle and including its spanner, mechanical tool. The handle includes the rubber coating and structure main part, and the structure main part has the first binding surface connected to the rubber coating: be equipped with first injection channel and injection channel of glue of the structure main part, and first injection channel of glue has first injection port, and first injection port is located in the first end of structure main part, and the at least one part of first injection channel of glue is not exposed to the first binding surface, and injection channel of glue is connected first binding surface and first injection channel of glue. By setting first injection port in the first end of structure main part, the injection point of rubber coating liquid is hidden here skillfully. The first injection channel of glue is designed in the structure main part inside, and it is not exposed to the first binding surface, and the rubber coating liquid flows to the corresponding area under the concealed condition, and then is guided to the first binding surface evenly through the injection channel of glue. The above setting avoids the gate mark to appear on the surface of rubber coating, and also makes the rubber coating and structure main part can cover the channel mark together.

Description

Technical Field

[0001] This utility model relates to the field of injection molded product structure, and in particular to a handle and a wrench and mechanical tool including the handle. Background Technology

[0002] Existing machine tools are often handheld. To improve grip comfort, a rubber coating is applied to the handle. This improves the feel when holding the tool, and the shape and color of the coating can also enhance the product's appearance. Typically, the process involves placing a mold next to the handle body, injecting the rubber coating liquid between the mold and the handle body's surface, and allowing the coating to set after a period of time. The mold can then be removed, and the coating and handle body will naturally adhere together. Different molds can be used to adjust the thickness and shape of the coating, making it more suitable for the user's needs.

[0003] However, in existing injection molding processes, the inlet (i.e., gate) of the overmolding liquid is located on the surface of the overmolding layer, which affects the appearance quality and limits the freedom of shape design. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defect that the appearance of the rubber coating layer of the handle is affected by the gate in the prior art, and to provide a handle and a wrench and mechanical tool including the handle.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution:

[0006] A handle includes an adhesive layer and a structural body, the structural body having a first mating surface connected to the adhesive layer:

[0007] The main body of the structure is provided with a first glue inlet channel and a glue outlet channel;

[0008] The first glue inlet channel has a first glue inlet, which is located at the first end of the main body of the structure.

[0009] At least a portion of the first adhesive inlet channel is not exposed to the first bonding surface;

[0010] The glue outlet channel connects the first mating surface and the first glue inlet channel.

[0011] In this technical solution, the injection point of the overmolding liquid is cleverly concealed by placing the first inlet at the first end of the main structure. Simultaneously, the first inlet channel is designed inside the main structure, preventing it from being exposed at the first mating surface. The overmolding liquid flows concealed to the corresponding area and is then evenly guided to the first mating surface through the outlet channel. These features prevent gate marks from appearing on the surface of the overmolding layer and allow both the overmolding layer and the main structure to jointly conceal channel marks, improving the aesthetics and design flexibility of the overmolding layer.

[0012] Preferably, the handle further includes a first cover, which is connected to the first end of the main body of the structure and covers the first glue inlet.

[0013] In this technical solution, the above-mentioned settings are used to hide the gate marks at the first inlet of the glue by using the first cover, thereby improving the aesthetics of the handle.

[0014] Preferably, the main body of the structure further has a second bonding surface facing the second end of the main body of the structure, and the second bonding surface is also connected to the adhesive layer;

[0015] The main body of the structure is also provided with a second glue inlet channel, which has a second glue inlet, and the second glue inlet is located on the second mating surface.

[0016] In this technical solution, by setting up a second bonding surface and a second injection channel, the overmolding liquid can be injected simultaneously from different directions, improving the uniformity of the overmolding layer, optimizing the injection molding process, and increasing production efficiency. Furthermore, since the second bonding surface faces the second end of the main structure, the second injection port is less likely to be visible when the user holds the main structure and observes it from the first end, thus further enhancing the aesthetics of the overmolding layer and design freedom.

[0017] Preferably, the handle further includes a second cover, which is connected to the second mating surface of the main body of the structure and covers the second glue inlet.

[0018] In this technical solution, the above-mentioned settings are used to hide the gate marks at the second inlet by the second cover, thereby improving the aesthetics of the handle.

[0019] Preferably, the overmolding layer comprises at least two different overmolded components;

[0020] The different coated parts are respectively connected to the first mating surface and the second mating surface.

[0021] In this technical solution, the above-described configuration allows for the injection of overmolding liquid through both the first and second inlets to form different overmolded parts. This increases the design freedom in the position of each overmolded part and avoids visible bridging marks. Furthermore, this configuration allows for differentiated overmolding of different areas of the handle to meet varying needs, thus enhancing the user experience.

[0022] Preferably, the overmolding layer comprises at least two different overmolded components;

[0023] The main body of the structure is provided with multiple glue outlet channels, and each glue outlet channel is connected to the inner side of different glue-coated parts.

[0024] In this technical solution, through the above-described configuration, multiple overmolded parts can be injection molded as a single unit. Specifically, the overmolding liquid is injected only from the first inlet, flowing through the first inlet channel and each of the outlet channels to form multiple overmolded parts, achieving efficient injection molding. The shared, concealed inlet channel among the multiple overmolded parts prevents bridging structures between them from affecting the appearance.

[0025] Preferably, the main body of the structure is cylindrical, and the first glue inlet channel is a groove-shaped structure located on the inner surface of the main body of the structure.

[0026] In this technical solution, the hollow part of the cylindrical structure is fully utilized to form a concealed flow channel, thereby reducing the weakening of the strength of the first glue inlet channel when it penetrates the main body of the structure.

[0027] Preferably, the first adhesive inlet channel is arranged along the axial direction of the main structure; and / or;

[0028] The adhesive outlet channel is perpendicular to the peripheral surface of the main structure.

[0029] By setting the first glue inlet channel along the axis of the main structure, the flow path of the glue liquid can be shortened, reducing the possibility of premature coagulation of the glue liquid in the latter half of the channel.

[0030] By having the adhesive outlet channel perpendicular to the circumferential surface of the main structure, it helps the adhesive liquid to achieve uniform circumferential overflow at the outlet channel, thereby improving the uniformity of the adhesive layer.

[0031] A mechanical tool comprising a handle as described above.

[0032] In this technical solution, by providing this mechanical tool, the handle part has no glue residue, is comfortable to grip, and has a flexible shape, thus improving the user experience.

[0033] A wrench comprising a handle as described above.

[0034] In this technical solution, by providing this wrench, the handle part has no glue residue, is comfortable to grip, and has a flexible shape, which is more conducive to accurately adjusting the tightness of fasteners and improving work efficiency.

[0035] A method for manufacturing a handle, which is used to manufacture a handle as described above;

[0036] The steps include:

[0037] Set the main structure;

[0038] A first mold and a second mold are provided such that the first mold and the second mold intersect at the position corresponding to the glue outlet channel to form a channel, and a gap corresponding to the preset position of the adhesive layer is formed between the first mold, the second mold and the main body of the structure;

[0039] Injecting the overmolding liquid into the first inlet, so that the overmolding liquid covers the first mating surface through the first inlet channel and the outlet channel, and can fill the gap;

[0040] Once the coating liquid solidifies, the coating layer is formed;

[0041] Remove the first mold and the second mold.

[0042] In this technical solution, by providing the handle manufacturing method, a channel is formed at the glue outlet position by the mold through the penetration, which is convenient to adapt to the preset glue outlet channel, and a gap of the coating layer is formed between the main body of the structure and the mold, so as to realize the concealed injection and uniform filling of the coating liquid, reduce the gate marks, and is suitable for mass production, ensuring high-quality molding of the coating layer.

[0043] Preferably, the main body of the structure further has a second bonding surface facing the second end of the main body of the structure, and the second bonding surface is also connected to the adhesive layer;

[0044] The main body of the structure is also provided with a second glue inlet channel, the second glue inlet channel having a second glue inlet, the second glue inlet being located on the second mating surface;

[0045] The step of setting up a first mold and a second mold such that the first mold and the second mold intersect at the position corresponding to the glue outlet channel to form a channel, and forming a gap between the first mold, the second mold and the main structure corresponding to the preset position of the overlay layer, further includes:

[0046] This also causes the first mold and the second mold to collide and form a channel at the position corresponding to the second glue inlet channel;

[0047] The step of injecting overmolding liquid into the first inlet, such that the overmolding liquid covers the first mating surface through the first inlet channel and the outlet channel and fills the gap, further includes:

[0048] This also allows the overmolding liquid to flow through the second inlet channel, cover the second bonding surface, and fill the gaps.

[0049] In this technical solution, through the above settings, different coated parts can be formed by injecting coating liquid through the first and second glue inlets, which improves the design freedom of each coated part in terms of position, avoids appearance bridging marks, facilitates differentiated settings of different coated parts, and enhances the user experience.

[0050] The positive and progressive effects of this utility model are as follows:

[0051] By placing the first inlet port at the first end of the main structure, the injection point of the overmolding liquid is cleverly concealed there. Simultaneously, the first inlet channel is designed inside the main structure, preventing it from being exposed at the first mating surface. The overmolding liquid flows concealed to the corresponding area and is then evenly guided to the first mating surface through the outlet channel. This design avoids gate marks on the surface of the overmolding layer and allows both the overmolding layer and the main structure to jointly conceal flow channel marks, improving the aesthetics of the overmolding layer and design flexibility.

[0052] By providing this mechanical tool, the handle is free of glue residue, comfortable to grip, and flexible in shape, thus improving the user experience.

[0053] By providing this wrench, the handle is free of glue residue, comfortable to grip, and flexible in shape, making it easier to precisely adjust the tightness of fasteners and improve work efficiency. Attached Figure Description

[0054] Figure 1 This is a schematic diagram of the AA section position of a wrench handle.

[0055] Figure 2 This is a manufacturing schematic diagram of the AA section of a wrench handle.

[0056] Figure 3 This is a schematic diagram of the BB cross-section of a wrench handle.

[0057] Figure 4 This is a manufacturing schematic diagram of the BB section of a wrench handle.

[0058] Figure 5 This is a manufacturing schematic diagram of the AA section of the handle according to an embodiment of the present invention.

[0059] Figure 6This is a manufacturing schematic diagram of the BB section of the handle according to an embodiment of the present invention.

[0060] Figure 7 This is a three-dimensional structural diagram of the handle before and after removing the annular soft rubber at the front end and the first cover, according to an embodiment of the present invention.

[0061] Figure 8 This is a flowchart illustrating a method for manufacturing a handle according to an embodiment of the present invention.

[0062] Explanation of reference numerals in the attached figures:

[0063] exist Figures 1-4 middle

[0064] 1' of the coating layer

[0065] 11' front soft rubber

[0066] Mid-range soft rubber 12'

[0067] 13' Rear soft rubber

[0068] Handle body 2'

[0069] Front mold 31'

[0070] Slider 32'

[0071] exist Figures 5-7 1. Front end ring-shaped soft rubber 11. Middle end sheet-shaped soft rubber 12. Rear end ring-shaped soft rubber 13. Main structural body 2

[0072] First end 21

[0073] Second end 22

[0074] First inlet flow channel 23

[0075] First glue inlet 231, glue outlet channel 24

[0076] Second glue inlet channel 25, second glue inlet 251, first mating surface 261, second mating surface 262, first mold 31, second mold 32, first cover 41, second cover 42 Detailed Implementation

[0077] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0078] like Figures 1-4As shown, taking a wrench handle as an example, the structure of the wrench handle includes a rubber coating layer 1' and a handle body 2'. The rubber coating layer 1' is divided into different rubber coating parts, namely, front soft rubber 11', middle soft rubber 12' (two pieces), and rear soft rubber 13'. The rubber coating layer 1' is formed by setting a front mold 31', a rear mold (not shown in the figure), and a slider 32', and injecting rubber coating liquid to solidify. The front mold 31' and the rear mold are usually used for shaping the outer contour of the rubber coating layer 1', and the slider 32' is used for shaping the surface texture of the rubber coating layer 1'.

[0079] When the gate of the overmolding liquid is usually located on the visible surface of the overmolding layer 1', gate marks (such as pits with a diameter of about 1 mm) are left on the surface of the overmolding layer 1' after molding, affecting the appearance quality. If the gate is placed in a hidden position to avoid gate marks, the freedom of shape design is severely restricted. In addition, when the overmolding layer 1' needs to be set in sections (divided into four sections as shown in the figure), if each overmolding part is injection molded separately, multiple gate marks will be caused; if it is injection molded as a whole, connecting runners (bridge structures) need to be set between the overmolding parts. These runners will remain between the overmolding parts after molding, which also affects the appearance.

[0080] like Figures 5-7 As shown, this embodiment provides a handle, which includes an overlay layer 1 and a structural body 2. The structural body 2 has a first mating surface 261 connected to the overlay layer 1. The structural body 2 is provided with a first glue inlet channel 23 and a glue outlet channel 24. The first glue inlet channel 23 has a first glue inlet 231, which is located at the first end 21 of the structural body 2. At least a portion of the first glue inlet channel 23 is not exposed to the first mating surface 261. The glue outlet channel 24 connects the first mating surface 261 and the first glue inlet channel 23.

[0081] In this way, by placing the first inlet 231 at the first end 21 of the main body 2, the injection point of the overmolding liquid is cleverly hidden there. Simultaneously, the first inlet channel 23 is designed inside the main body 2, so that it is not exposed to the first mating surface 261. The overmolding liquid flows to the corresponding area in a concealed state, and is then evenly guided to the first mating surface 261 through the outlet channel 24. These features prevent gate marks from appearing on the surface of the overmolding layer 1, and also allow the overmolding layer 1 and the main body 2 to jointly conceal channel marks, improving the aesthetics and design freedom of the overmolding layer 1.

[0082] In this embodiment, the handle also includes a first cover 41, which is connected to the first end 21 of the main body 2 and covers the first glue inlet 231, so as to hide the gate marks at the first glue inlet 231 and improve the aesthetics of the handle.

[0083] In this embodiment, the first cover 41 is a cylindrical end cap of the handle; in other embodiments, the first cover 41 can also be adapted to other components with different shapes and connection forms.

[0084] In this embodiment, the main body 2 also has a second mating surface 262 facing the second end 22 of the main body 2, and the second mating surface 262 is also connected to the overmolding layer 1; the main body 2 is also provided with a second glue inlet channel 25, the second glue inlet channel 25 having a second glue inlet 251, the second glue inlet 251 being located on the second mating surface 262. This allows for simultaneous injection of overmolding liquid from different directions, improving the uniformity of the overmolding layer 1, optimizing the injection molding process, and increasing production efficiency. Furthermore, since the second mating surface 262 faces the second end 22 of the main body 2, when the user holds the main body 2 and observes the main body 2 from the first end 21, the second glue inlet 251 is not easily visible, thereby further improving the aesthetics and design freedom of the overmolding layer 1.

[0085] In this embodiment, the handle also includes a second cover 42, which is connected to the second mating surface 262 of the main body 2 and covers the second glue inlet 251, so as to hide the gate marks at the second glue inlet 251 and improve the aesthetics of the handle.

[0086] In this embodiment, the second cover 42 is a protective ring fitted onto the main body 2; in other embodiments, the second cover 42 may also be adapted to other components with different shapes and connection forms.

[0087] In this embodiment, the overmolding layer 1 includes a front annular soft rubber 11, two middle sheet-like soft rubber pieces 12, and a rear annular soft rubber 13. The middle sheet-like soft rubber 12 and the rear annular soft rubber 13 are connected to the first mating surface 261, and the front annular soft rubber 11 is connected to the second mating surface 262. This arrangement facilitates the injection of overmolding liquid through the first glue inlet 231 and the second glue inlet 251 to form different overmolded parts, increasing the design freedom in the position of each overmolded part and avoiding visible bridging marks. Furthermore, the above arrangement allows for differentiated overmolding of different areas of the handle (e.g., different properties such as hardness, texture, or color), improving the user experience. In other embodiments, the overmolding layer 1 includes at least two different overmolded parts, which are respectively connected to the first mating surface 261 and the second mating surface 262, achieving similar technical effects.

[0088] In this embodiment, the main body 2 is provided with multiple glue outlet channels 24, each of which is connected to the inner side of the middle sheet-like soft rubber 12 and the rear annular soft rubber 13, allowing for the integral injection molding of multiple overmolded parts. Specifically, the overmolding liquid is injected only from the first inlet 231, flowing through the first inlet channel 23 and each glue outlet channel 24 to form multiple overmolded parts, achieving efficient injection molding. The shared concealed inlet channel among the multiple overmolded parts prevents bridging structures between them from affecting the appearance. In other embodiments, the overmolding layer 1 comprises at least two different overmolded parts; the main body 2 is provided with multiple glue outlet channels 24, each connected to the inner side of a different overmolded part, achieving similar technical effects.

[0089] In this embodiment, by setting the main body 2 to be cylindrical and the first glue inlet channel 23 to be a groove-shaped structure located on the inner surface of the main body 2, the hollow part of the cylindrical structure is fully utilized to form a concealed flow channel, thereby reducing the weakening of the strength of the main body 2 when the first glue inlet channel 23 penetrates it.

[0090] Please refer to the following: Figure 7 In this embodiment, by setting the first glue inlet channel 23 along the axis C of the main body 2, the flow path of the glue liquid can be shortened, reducing the possibility of premature coagulation of the glue liquid in the latter half of the channel.

[0091] In this embodiment, the glue outlet channel 24 is perpendicular to the peripheral surface of the main body 2, which helps the glue liquid to achieve uniform circumferential overflow at the outlet of the glue outlet channel 24, thereby improving the uniformity of the glue layer 1.

[0092] In this embodiment, the first inlet channel 23, the outlet channel 24, and the second inlet channel 25 are each 0.8 mm wide x 2.5 mm high to ensure smooth flow of the overmolding liquid, avoid channel blockage or pressure loss, minimize channel space occupation, reduce material waste, and ensure the molding efficiency and quality of the overmolding layer 1. In other embodiments, each channel can be made larger to accommodate the handle.

[0093] This embodiment also provides a mechanical tool, which includes a handle as described above, so that the handle part has no glue residue on its appearance, is comfortable to grip, has a flexible shape, and improves the user experience.

[0094] In this embodiment, the mechanical tool is a wrench, and the handle is the handle of the wrench. The handle part has no glue residue on its appearance, is comfortable to grip, and has a flexible shape, improving the user experience. The aesthetics and grip of this wrench are improved compared to wrenches in the prior art, making it easier to accurately adjust the tightness of fasteners and improve work efficiency.

[0095] In other alternative embodiments, the mechanical tool may be a tool with a handle, such as a screwdriver, hammer, pliers, or file.

[0096] like Figure 8 As shown, this embodiment also provides a method for manufacturing a handle, which is used to manufacture a handle as described above, and the steps include:

[0097] S1. Set up the main structural component 2;

[0098] S2. Set a first mold 31 and a second mold 32 such that the first mold 31 and the second mold 32 intersect to form a channel at the position corresponding to the glue outlet channel 24, and a gap corresponding to the preset position of the glue layer 1 is formed between the first mold 31, the second mold 32 and the main body 2.

[0099] S3. Inject the overmolding liquid into the first glue inlet 231, so that the overmolding liquid covers the first mating surface 261 through the first glue inlet channel 23 and the glue outlet channel 24, and can fill the gaps.

[0100] S4. Wait for the adhesive liquid to solidify and form the adhesive layer 1;

[0101] S5. Remove the first mold 31 and the second mold 32.

[0102] In this way, a channel is formed at the position of the glue outlet channel 24 by the mold penetration, which facilitates the adaptation to the preset glue outlet channel 24, and forms a gap between the main body 2 and the mold to form the overlay layer 1, realizing concealed injection and uniform filling of the overlay liquid, reducing gate marks, suitable for mass production, and ensuring high-quality molding of the overlay layer 1. In other embodiments, if conditions permit, the step sequence of this handle manufacturing method can be adaptively adjusted.

[0103] Please refer to the positional relationship between the first mold 31, the second mold 32, and the main structural body 2 in this manufacturing method. Figure 6 The areas within the dashed boxes represent the main structural changes.

[0104] In this embodiment, the first mold 31 is a front mold and the second mold 32 is a slider; in other embodiments, the first mold 31 and the second mold 32 can be any structure adapted to the current manufacturing scheme.

[0105] In this embodiment, S2 further includes:

[0106] S21 also causes the first mold 31 and the second mold 32 to collide and form a channel at the position corresponding to the second glue inlet channel 25;

[0107] S3 also includes;

[0108] S31 also allows the overmolding liquid to pass through the second glue inlet channel 25, cover the second mating surface 262, and fill the gaps.

[0109] In this way, different coated parts can be formed by injecting coating liquid through the first glue inlet 231 and the second glue inlet 251 respectively, which increases the design freedom of each coated part in terms of position, avoids the appearance of bridging marks, facilitates the differentiated setting of different coated parts, and improves the user experience.

[0110] Please refer to the positional relationship between the first mold 31, the second mold 32, and the main structural body 2 in this manufacturing method. Figure 5 The areas within the dashed boxes represent the main structural changes.

[0111] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A handle comprising an adhesive layer and a structural body, the structural body having a first mating surface connected to the adhesive layer, characterized in that: The main body of the structure is provided with a first glue inlet channel and a glue outlet channel; The first glue inlet channel has a first glue inlet, which is located at the first end of the main body of the structure. At least a portion of the first adhesive inlet channel is not exposed to the first bonding surface; The glue outlet channel connects the first mating surface and the first glue inlet channel.

2. The handle as claimed in claim 1, characterized in that, The handle also includes a first cover, which is connected to the first end of the main body of the structure and covers the first glue inlet.

3. The handle as described in claim 1, characterized in that, The main body of the structure also has a second bonding surface facing the second end of the main body of the structure, and the second bonding surface is also connected to the adhesive layer; The main body of the structure is also provided with a second glue inlet channel, which has a second glue inlet, and the second glue inlet is located on the second mating surface.

4. The handle as described in claim 3, characterized in that, The handle also includes a second cover, which is connected to the second mating surface of the main body of the structure and covers the second glue inlet.

5. The handle as described in claim 3, characterized in that, The coating layer includes at least two different coated components; The different coated parts are respectively connected to the first mating surface and the second mating surface.

6. The handle as claimed in claim 1, characterized in that, The overlay layer includes at least two different overlay components; The main body of the structure is provided with multiple glue outlet channels, and each glue outlet channel is connected to the inner side of different glue-coated parts.

7. The handle as claimed in claim 1, characterized in that, The main body of the structure is cylindrical, and the first glue inlet channel is a groove-shaped structure located on the inner surface of the main body of the structure.

8. The handle as claimed in claim 1, characterized in that, The first adhesive inlet channel is arranged along the axial direction of the main structure; and / or, The adhesive outlet channel is perpendicular to the peripheral surface of the main structure.

9. A machine tool, characterized in that, It includes the handle as described in any one of claims 1-8.

10. A wrench, characterized in that, It includes the handle as described in any one of claims 1-8.

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