A handle and portable milk maker

Abstract

This utility model discloses a handle and a portable formula maker. The handle includes a handle structure and a locking unit. The handle structure includes a connecting handle with a guide groove. The connecting handle has a head-end locking groove on one side of the guide groove and / or an end-end locking groove on the other side of the guide groove. The locking unit includes a cover, a coil spring, and a movable component. The cover includes an end cap and a structural post. The movable component includes a movable body and a locking protrusion. After the structural post passes through the coil spring, the movable body, and the guide groove in sequence, the cover is fixed to an external object based on the fastening unit. The end cap presses the movable component onto the connecting handle by compressing the coil spring. The handle structure moves along the axis of the guide groove between the movable component and the external object based on the guidance of the structural post. This handle structure enables the handle structure to hover, giving it good posture stability during use.

Description

Technical Field

[0001] This utility model relates to the field of connection structures, specifically to a handle and a portable milk maker. Background Technology

[0002] For some small and medium-sized electrical appliances or daily necessities such as thermos flasks, adding a handle can improve the product's portability. Generally, existing handle structures have a groove on the handle and a locking element on the product body. The handle slides along the groove and is mounted on the locking element. Guided by the locking element, the handle can achieve a telescopic effect, thereby changing the relative posture between the handle and the product body to adapt to more usage scenarios.

[0003] However, in practical applications, it has been found that since the locking mechanism only guides the handle, the handle cannot maintain its posture well during daily use. On the one hand, lifting the product body by the handle can easily cause it to wobble, resulting in a significant change in the center of gravity when carrying it, which is not conducive to carrying comfort. On the other hand, when the handle is released, it not only hits the product body but also generates noise. Moreover, the posture of the handle when it is released is random and cannot meet the storage needs well. Utility Model Content

[0004] This utility model provides a handle and a portable formula maker. The handle, based on the cooperation of the locking protrusion and the locking groove, can maintain good stability during use and has good ease of use.

[0005] Accordingly, this utility model discloses a handle, including a handle structure and a locking unit;

[0006] The handle structure includes a connecting handle, which has a linear guide groove along a preset direction. On the outer surface of the connecting handle, the connecting handle has a head locking groove on one side of the head end of the guide groove, and / or the connecting handle has an end locking groove on one side of the tail end of the guide groove.

[0007] The locking unit includes a cover, a coil spring, and a movable component. The cover includes an end cap and a structural column coaxially connected to the end cap. The movable component includes a movable body with a perforation and a locking protrusion provided on one side of the movable body.

[0008] After the structural column passes through the coil spring, the movable body, and the guide groove in sequence, the cover is fixed to a preset external object based on a fastening unit. The end cap presses the movable part against the outer surface of the connecting handle by compressing the coil spring. The handle structure moves between the movable part and the external object along the axial direction of the guide groove based on the guidance of the structural column to the guide groove.

[0009] When the cover is located at the first end of the guide groove, the locking protrusion extends into and engages with the first end locking groove, and / or when the cover is located at the end of the guide groove, the locking protrusion extends into and engages with the end locking groove.

[0010] In an optional embodiment, the structural column is composed of a segmented first cylinder and a second cylinder, wherein the diameter of the first cylinder is smaller than the width of the guide groove, and the diameter of the second cylinder is greater than or equal to the width of the guide groove.

[0011] The inner side of the coil spring and the through hole of the movable body are fitted onto the second cylinder.

[0012] In an optional embodiment, the outer edge of the end cap protrudes toward one side of the structural column to form a limiting protrusion;

[0013] When the cover is fixed to a preset external object based on a fastening unit, the end face of the limiting protrusion contacts the outer side of the connecting handle.

[0014] In an optional implementation, the length of the line connecting any two points on the outer contour of the axial section of the structural column is less than the width of the guide groove, and the handle structure rotates around the structural column based on the limiting effect of the structural column on the guide groove.

[0015] In an optional embodiment, the connecting handle is further provided with a mounting groove, and the guide groove is disposed at the bottom of the mounting groove;

[0016] When the cover is fixed to a preset external object based on a fastening unit, the end cap is inserted into the guide groove.

[0017] In an optional embodiment, the outer surface of the end cap is provided with a first mating plane and a second mating plane. When the end cap is inserted into the guide groove, the first mating plane fits against the side wall of one side of the guide groove, and the second mating plane fits against the side wall of the other side of the guide groove.

[0018] In an optional embodiment, the movable body is provided with a first notch at the edge of the perforation, and the structural column is provided with a first anti-deflection protrusion on its outer edge. When the end cap presses the movable part against the outer surface of the connecting handle by compressing the coil spring, the first anti-deflection protrusion engages in the first notch.

[0019] And / or the active body is provided with a second anti-deflection protrusion at the edge of the perforation, and the structural column is provided with a second notch on its outer edge. When the end cap presses the active part against the outer surface of the connecting handle by compressing the coil spring, the second anti-deflection protrusion engages in the second notch.

[0020] And / or the outer edge of the end cap protrudes towards the side of the structural column to form an edge protrusion, and a third notch is provided on the inner wall of the edge protrusion. The movable body is provided with a third anti-deflection protrusion at the edge. When the end cap presses the movable part against the outer surface of the connecting handle by compressing the coil spring, the third anti-deflection protrusion is engaged in the third notch.

[0021] And / or the outer edge of the end cap protrudes towards the side of the structural column to form an edge protrusion, and a fourth anti-deflection protrusion is provided on the inner wall of the edge protrusion. The movable body is provided with a fourth notch at the edge. When the end cap presses the movable part against the outer surface of the connecting handle by compressing the coil spring, the fourth anti-deflection protrusion is engaged in the fourth notch.

[0022] In an optional embodiment, the fastening unit includes a through hole and a locking screw disposed on the cover, the through hole penetrating the end cap and the structural column;

[0023] The cover is fixed to a preset external object based on a fastening unit, including:

[0024] The head of the locking screw presses against the end cap, and the tail of the locking screw locks onto the external object after passing through the through hole.

[0025] In an optional embodiment, the handle structure has two sets of connecting handles arranged in a mirror image, and each set of connecting handles has a corresponding locking unit;

[0026] The structural columns in the two locking units are set coaxially.

[0027] Accordingly, this utility model also provides a portable formula maker, including a formula maker body and the aforementioned handle, wherein the formula maker body is the external object, and the handle is mounted on the formula maker body by the fastening unit.

[0028] In summary, this utility model provides a handle and a portable formula maker. During use, the handle, based on the cooperation of the locking protrusion and the locking groove, maintains good stability in the relative posture between the handle structure and the formula maker body after positioning adjustment. This prevents the handle structure from causing unnecessary interference with the carrying, storage, and use of the formula maker, resulting in excellent ease of use. Furthermore, when the locking protrusion is not engaged with the locking groove, it is also pressed against the connecting handle by a coil spring, providing a certain damping force for the movement of the handle structure. This allows for both a release and suspension function of the handle structure and a better lifting feel. Attached Figure Description

[0029] Figure 1 This is a three-dimensional structural diagram of the handle according to an embodiment of the present utility model.

[0030] Figure 2 This is a partial three-dimensional exploded view of the handle structure according to an embodiment of the present invention.

[0031] Figure 3 This is a partial cross-sectional schematic diagram of the exploded handle structure according to an embodiment of the present utility model.

[0032] Figure 4 This is a three-dimensional structural diagram of the cover body according to an embodiment of the present utility model.

[0033] Figure 5 This is a three-dimensional structural diagram of the movable component in an embodiment of the present utility model.

[0034] Figure 6 This is a three-dimensional structural diagram of the portable formula maker in the first state of an embodiment of the present invention.

[0035] Figure 7 This is a three-dimensional structural diagram of the portable formula maker in the second state of an embodiment of the present invention.

[0036] Figure 8 This is a three-dimensional structural diagram of the portable formula maker in the third state of this utility model embodiment.

[0037] Figure 9 This is a cross-sectional structural diagram of a portable formula maker according to an embodiment of the present invention.

[0038] Figure 10 This is a partially enlarged structural diagram of the portable formula maker according to an embodiment of the present invention. Detailed Implementation

[0039] To further illustrate the technical means and effects adopted by this application to achieve its intended purpose, the specific implementation methods, structures, features, and effects according to this application are described in detail below with reference to the accompanying drawings and preferred embodiments. In the following description, different "an embodiment" or "an embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0040] Figure 1 This is a three-dimensional structural diagram of the handle according to an embodiment of the present utility model. Figure 2 This is a partial three-dimensional exploded view of the handle according to an embodiment of the present invention. Figure 3 This is a partial cross-sectional view of the exploded handle structure according to an embodiment of the present invention. Figure 4 This is a three-dimensional structural diagram of the cover body according to an embodiment of the present utility model. Figure 5 This is a three-dimensional structural diagram of the movable component in an embodiment of the present utility model.

[0041] Specifically, this utility model embodiment discloses a handle, which basically includes a handle structure 1 and a locking unit 12;

[0042] The handle structure 1 includes a connecting handle 11. In this embodiment, there are two sets of connecting handles 11, which are connected by a handle 10. This invention uses one set of connecting handles 11 as an example for explanation; the structure of the other set of connecting handles 11 is a mirror image of the example. A locking unit 12 is a structure that cooperates with the connecting handle 11. Therefore, there are two locking units 12, with each set of connecting handles 11 cooperating with one of the locking units 12. The structural posts in the two locking units 12 are coaxially arranged, ensuring the mobility of the handle structure 1.

[0043] For details, please refer to the attached diagram. Figure 2 The connecting handle 11 has a linear guide groove 113 along a preset direction. On the outer surface of the connecting handle 11, the connecting handle 11 has a head end locking groove 112 located on the head end side of the guide groove 113, and / or the connecting handle has an end locking groove 114 located on the end side of the guide groove 113.

[0044] The locking unit 12 includes a cover 123, a coil spring 122, and a movable part 121.

[0045] Specifically, the cover 123 includes an end cap 131 and a structural column coaxially connected to the end cap 131. The structural column is preferably cylindrical in shape to achieve a smooth fit with the guide groove 113.

[0046] Specifically, the movable component 121 includes a movable body 150 with perforations and a locking protrusion 151 disposed on one side of the movable body 150.

[0047] During assembly, after the structural column passes through the coil spring 122, the movable body 150, and the guide groove 113 in sequence, the cover 123 is fixed to a preset external object based on a fastening unit. The end cap 131 presses the movable part 121 against the outer surface of the connecting handle by compressing the coil spring 122. The handle structure 1 moves along the axial direction of the guide groove 113 between the movable part 121 and the external object based on the guidance of the structural column to the guide groove 113.

[0048] During the movement of the handle structure 1, when the cover 123 is located at the first end of the guide groove 113, the locking protrusion 151 extends into and engages with the first end locking groove 112, and / or when the cover 123 is located at the end of the guide groove 113, the locking protrusion 151 extends into and engages with the end locking groove 114.

[0049] Specifically, the basic function of the handle in this embodiment of the present invention is to fix the cover 123 to the external object, and use the form and position interference between the cover 123 and the external object to clamp the connecting handle 11 between the external object and the movable part 121, thereby installing the handle structure 1 onto the external object; using the structural post to guide the guide groove 113, the handle structure 1 can slide relative to the external object (i.e., the cover 123) through the connecting handle 11, achieving a function similar to telescopic movement; and when the relative position between the handle structure 1 and the cover 123 reaches the end of the stroke, the cooperation of the locking protrusion 151 and the locking groove can maintain the stability of the telescopic posture of the handle structure 1 relative to the external object without excessive external force.

[0050] It should be noted that, in order to enhance the ease of operation of the locking protrusion 151 and the locking groove when they enter and exit the engagement, the locking protrusion 151 is provided with an outer chamfer or outer rounded corner at the position where it enters and exits the corresponding locking groove. Correspondingly, the locking groove is provided with an inner chamfer or inner rounded corner at the position where the locking protrusion 151 enters and exits.

[0051] Furthermore, in this embodiment of the invention, the structural column has two basic uses. One use is to pass through the slide groove and restrict the degree of freedom of movement of the handle structure 1. The other use is to provide mounting space for the coil spring 122 and the movable body 150. Accordingly, the structural column is composed of a segmented first cylinder 141 and a second cylinder 142. The diameter of the first cylinder 141, which is used to fit the structural column, is smaller than the width of the guide groove 113, and the diameter of the second cylinder 142 is greater than or equal to the width of the guide groove 113. The inner side of the coil spring 122 and the through hole of the movable body 150 are fitted onto the second cylinder 142. In this embodiment of the invention, based on the fit with external objects, the structural column has a positioning hole 143 machined on the inner side of its end.

[0052] Furthermore, as described above regarding the handle's structure, based on the cooperation between the structural post and the guide groove 113, the connecting handle 11 in the handle structure 1 can slide along the structural post. To improve sliding stability and prevent the connecting handle 11 from deflecting, the outer edge of the end cap 131 protrudes towards the structural post to form a limiting protrusion 132. When the cover 123 is fixed to a preset external object based on a fastening unit, the end face of the limiting protrusion 132 contacts the outer surface of the connecting handle 11. At this time, the distance between the limiting protrusion 132 and the external object is equal to the thickness of the connecting handle 11 at the point of contact with the end cap 131, which can prevent the connecting handle 11 from deflecting. In actual processing, due to processing errors and fit tolerances, it is difficult to perfectly control the distance between the limiting protrusion 132 and the external object to be exactly equal to the thickness of the connecting handle 11 at the mating point with the end cap 131. To avoid the connecting handle 11 being unable to slide due to excessive protrusion height of the limiting protrusion 132 or the connecting handle 11 swaying due to insufficient protrusion height of the limiting protrusion 132, generally, several protrusions 134 are provided on the end face of the limiting protrusion 132. The protrusions 134 are the actual contact structure between the limiting protrusion 132 and the connecting handle 11. On the surface, the protrusion 134 has a small contact area with the connecting handle 11. When squeezed, it can deform under high pressure, ensuring the normal function of the limiting protrusion 132 in suppressing the sway of the connecting handle 11. On the other hand, due to the small contact area, the protrusion 134 is difficult to completely press the connecting handle 11, thus ensuring the normal sliding function of the connecting handle 11. In addition, the protrusion 134 can provide a certain damping performance for the sliding of the connecting handle 11. When no external force is applied, it can prevent the connecting handle 11 from moving on its own and improve the stability of the connecting handle 11.

[0053] Furthermore, in actual product applications, in addition to the telescopic function of the handle structure 1, the handle structure 1 also needs to have a swing function. Accordingly, the length of the line connecting any two points on the outer contour of the axial section of the structural column is less than or equal to the width of the guide groove 113, thereby ensuring that the structural column will not cause form and position interference to the rotation of the handle structure 1 relative to the structural column. The handle structure 1 rotates around the structural column based on the limiting effect of the structural column on the guide groove 113.

[0054] In practical applications, the relative positions of the locking groove and the guide groove 113 are fixed. In order to ensure that the locking protrusion 151 on the movable part 121 can accurately extend into the corresponding guide groove 113, when the handle structure 1 needs to swing relative to the structural column, the rotation angle of the movable body 150 needs to be adjusted appropriately to ensure that the locking protrusion 151 can rotate with the swing of the handle structure 1, and to ensure that the locking protrusion 151 can accurately extend into the corresponding wire groove during the sliding process of the handle structure 1.

[0055] Specifically, based on the specific configuration of the active body 150, this embodiment of the utility model mainly drives the rotation of the active body 150 through the cover 123, and through the cooperation between the cover 123 and the connecting handle 11, the cover 123 can be driven to swing synchronously when the connecting handle 11 swings.

[0056] Specifically, since the end cap 131 presses the movable body 150 against the outer surface of the connecting handle via a coil spring 122, and for practicality and aesthetics, the connecting handle 11 is also provided with a mounting groove 111, and the guide groove 113 is located at the bottom of the mounting groove 111. When the cover 123 is fixed to a preset external object based on a fastening unit, the end cap 131 is recessed into the guide groove 113, preventing the end cap 131 from protruding on the connecting handle. Based on this structure, the outer surface of the end cap 131 is provided with a first mating plane and a second mating plane. When the end cap 131 is recessed into the guide groove 113, the first mating plane fits against one side wall of the guide groove 113, and the second mating plane fits against the other side wall of the guide groove 113. Through this implementation structure, the connecting handle 11 will drive the cover 123 to swing synchronously when it swings.

[0057] Based on this, in order to ensure the synchronous rotation of the cover 123 and the movable part, optionally, the movable body 150 is provided with a first notch at the edge of the perforation, and the structural column is provided with a first anti-deflection protrusion on the outer edge. When the end cover 131 presses the movable part 121 against the outer surface of the connecting handle by compressing the coil spring 122, the first anti-deflection protrusion is engaged in the first notch.

[0058] And / or the active body 150 is provided with a second anti-deflection protrusion at the edge of the perforation, and the structural column is provided with a second notch on its outer edge. When the end cap 131 presses the active part 121 against the outer surface of the connecting handle by compressing the coil spring 122, the second anti-deflection protrusion is engaged in the second notch.

[0059] And / or the outer edge of the end cap 131 protrudes towards the structural column to form an edge protrusion, and a third notch 133 is provided on the inner wall of the edge protrusion. The movable body 150 is provided with a third anti-deflection protrusion 152 at the edge. When the end cap 131 presses the movable part 121 against the outer surface of the connecting handle by compressing the coil spring 122, the third anti-deflection protrusion 152 is engaged in the third notch 133.

[0060] And / or the outer edge of the end cap 131 protrudes towards the side of the structural column to form an edge protrusion, and a fourth anti-deflection protrusion is provided on the inner wall of the edge protrusion. The movable body 150 is provided with a fourth notch at the edge. When the end cap 131 presses the movable part 121 against the outer surface of the connecting handle by compressing the coil spring 122, the fourth anti-deflection protrusion is engaged in the fourth notch.

[0061] All four embodiments described above enable the end cap 131 and the sliding body to rotate synchronously. In this embodiment, the third embodiment is adopted, wherein the outer edge of the end cap 131 protrudes towards the structural column to form an edge protrusion, and a third notch 133 is provided on the inner wall of the edge protrusion. The movable body 150 is provided with a third anti-deflection protrusion 152 at the edge. When the end cap 131 presses the movable part 121 against the outer surface of the connecting handle by compressing the coil spring 122, the third anti-deflection protrusion 152 cooperates in the third notch 133. In this embodiment, the cooperation between the protrusion and the notch can ensure the synchronous rotation of the cap 123 and the movable part 121, and will not affect the sliding of the movable part 121 along the axial direction of the structural column.

[0062] Specifically, the structure of the edge protrusion is the same as that of the limiting protrusion 132, and in actual implementation, the two structures can be integrated into the same structure.

[0063] Furthermore, considering the balance of movement, in this embodiment of the utility model, the number of locking protrusions 151 in the movable component 121 is two, the number of anti-deflection protrusions is more than two, the two locking protrusions 151 are symmetrically arranged on the movable body 150, and the anti-deflection protrusions are uniformly arranged along the circumferential direction of the movable body 150.

[0064] It should be noted that there is no conflict between the implementation structure of the locking protrusion 151 and the anti-deflection protrusion. In actual implementation, the locking protrusion 151 can be set on the structure of the anti-deflection protrusion.

[0065] Furthermore, the fastening unit includes a through hole 135 and a locking screw 15 disposed on the cover 123, wherein the through hole 135 penetrates the end cap 131 and the structural column;

[0066] The cover 123 is fixed to a preset external object based on a fastening unit, including:

[0067] The head of the locking screw presses against the end cap 131 and the tail of the locking screw locks onto the external object after passing through the through hole 135.

[0068] Accordingly, for aesthetic reasons, the end cap 131 has a countersunk screw groove 144 on the side where it is locked by the head of the locking screw, which is used to hide the head of the locking screw. In actual implementation, the countersunk screw groove 144 can also be covered by a decorative cover 510 to improve its aesthetics.

[0069] Figure 6 This is a three-dimensional structural diagram of the portable formula maker in the first state of an embodiment of the present invention. Figure 7 This is a three-dimensional structural diagram of the portable formula maker in the second state of an embodiment of this utility model. Figure 8 This is a three-dimensional structural diagram of the portable formula maker in the third state of this embodiment. Figure 9 This is a cross-sectional structural diagram of the portable formula maker according to an embodiment of the present invention. Figure 10 This is a partially enlarged structural diagram of the portable formula maker according to an embodiment of the present invention.

[0070] This utility model embodiment also provides a portable formula maker, including a formula maker body 500 and a handle, wherein the formula maker body 500 is the external object, and the handle is mounted on the formula maker body 500 via a fastening unit. This utility model embodiment further describes the connection structure between the handle and the external object using the formula maker body 500 as the external object.

[0071] Specifically, in this embodiment of the invention, to facilitate the installation of the handle, the main body 500 of the formula maker is provided with a positioning protrusion 501 at the installation position corresponding to the cover 123. The positioning protrusion 501 is provided with a threaded hole 502 for fasteners (locking screws 15) to engage. During handle installation, after the structural column passes through the coil spring 122, the movable body 150, and the guide groove 113 in sequence, the cover 123 is fixed in the preset threaded hole 502 based on the locking screw. The positioning hole 143 provided on the structural column in this embodiment of the invention can be used to adapt to the outer contour of the positioning protrusion 501, thereby achieving precise positioning of the cover 123 during installation.

[0072] Refer to the attached diagram. Figure 1 When the portable formula maker is actually stored, the handle 10 is pressed towards the main body 500 of the formula maker. Under the guidance of the structural column and the guide groove 113, the connecting handle 11 moves downward in the direction shown in the figure. When the connecting handle 11 moves to the end of its stroke, the cover 123 is finally located on the first end of the guide groove 113, and the locking protrusion 151 extends into and fits on the locking groove 112 at the first end.

[0073] Refer to the attached diagram. Figure 2 When the portable formula maker needs to be lifted, the handle 10 is lifted away from the main body 500 of the formula maker. Under the guidance of the structural column and the guide groove 113, the connecting handle 11 moves upward in the direction shown in the figure. When the connecting handle 11 moves to the end of its stroke, the cover 123 is finally located at the end of the guide groove 113, and the locking protrusion 151 extends into and engages with the end locking groove 114.

[0074] Refer to the attached diagram. Figure 3 When the portable formula maker is actually used, the handle needs to make room for the lid 123 of the formula maker body 500 to open. In this state, the handle 10 drives the entire handle to swing around the lid 123 to one side.

[0075] In summary, this utility model embodiment provides a handle and a portable formula maker. In the three states described above, based on the cooperation of the locking protrusion and the locking groove, the relative posture between the handle and the formula maker body can maintain good stability after adjustment. In practical use, this avoids unnecessary impact on the carrying, storage, and use of the formula maker, providing excellent ease of use. Furthermore, when the locking protrusion is not engaged with the locking groove, it is also pressed against the connecting handle by a coil spring, providing a certain damping force for the movement of the handle structure. This enables the handle structure to achieve a release and suspension function (maintaining positional stability without external force) and provides a better lifting feel.

[0076] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A handle, characterized in that, Includes handle structural components and locking unit; The handle structure includes a connecting handle, which has a linear guide groove along a preset direction. On the outer surface of the connecting handle, the connecting handle has a head locking groove on one side of the head end of the guide groove, and / or the connecting handle has an end locking groove on one side of the tail end of the guide groove. The locking unit includes a cover, a coil spring, and a movable component. The cover includes an end cap and a structural column coaxially connected to the end cap. The movable component includes a movable body with a perforation and a locking protrusion provided on one side of the movable body. After the structural column passes through the coil spring, the movable body, and the guide groove in sequence, the cover is fixed to a preset external object based on a fastening unit. The end cap presses the movable part against the outer surface of the connecting handle by compressing the coil spring. The handle structure moves between the movable part and the external object along the axial direction of the guide groove based on the guidance of the structural column to the guide groove. When the cover is located at the first end of the guide groove, the locking protrusion extends into and engages with the first end locking groove, and / or when the cover is located at the end of the guide groove, the locking protrusion extends into and engages with the end locking groove.

2. The handle as described in claim 1, characterized in that, The structural column is composed of a segmented first cylinder and a second cylinder, wherein the diameter of the first cylinder is smaller than the width of the guide groove, and the diameter of the second cylinder is greater than or equal to the width of the guide groove. The inner side of the coil spring and the through hole of the movable body are fitted onto the second cylinder.

3. The handle as described in claim 1, characterized in that, The outer edge of the end cap protrudes toward one side of the structural column to form a limiting protrusion; When the cover is fixed to a preset external object based on a fastening unit, the end face of the limiting protrusion contacts the outer side of the connecting handle.

4. The handle as described in claim 1, characterized in that, The length of the line connecting any two points on the outer contour of the axial section of the structural column is less than the width of the guide groove. The handle structure rotates around the structural column based on the limiting effect of the structural column on the guide groove.

5. The handle as described in claim 1, characterized in that, The connecting handle is also provided with an installation groove, and the guide groove is provided at the bottom of the installation groove; When the cover is fixed to a preset external object based on a fastening unit, the end cap is inserted into the guide groove.

6. The handle as described in claim 5, characterized in that, The outer surface of the end cap is provided with a first mating plane and a second mating plane. When the end cap is inserted into the guide groove, the first mating plane fits against the side wall of one side of the guide groove, and the second mating plane fits against the side wall of the other side of the guide groove.

7. The handle as described in claim 6, characterized in that, The active body has a first notch at the edge of the perforation, and the structural column has a first anti-deflection protrusion on its outer edge. When the end cap presses the active part against the outer surface of the connecting handle by compressing the coil spring, the first anti-deflection protrusion engages in the first notch. And / or the active body is provided with a second anti-deflection protrusion at the edge of the perforation, and the structural column is provided with a second notch on its outer edge. When the end cap presses the active part against the outer surface of the connecting handle by compressing the coil spring, the second anti-deflection protrusion engages in the second notch. And / or the outer edge of the end cap protrudes towards the side of the structural column to form an edge protrusion, and a third notch is provided on the inner wall of the edge protrusion. The movable body is provided with a third anti-deflection protrusion at the edge. When the end cap presses the movable part against the outer surface of the connecting handle by compressing the coil spring, the third anti-deflection protrusion is engaged in the third notch. And / or the outer edge of the end cap protrudes towards the side of the structural column to form an edge protrusion, and a fourth anti-deflection protrusion is provided on the inner wall of the edge protrusion. The movable body is provided with a fourth notch at the edge. When the end cap presses the movable part against the outer surface of the connecting handle by compressing the coil spring, the fourth anti-deflection protrusion is engaged in the fourth notch.

8. The handle as described in claim 1, characterized in that, The fastening unit includes a through hole and a locking screw on the cover, the through hole penetrating the end cover and the structural column; The cover is fixed to a preset external object based on a fastening unit, comprising: the head of the locking screw pressing on the end cover and the tail of the locking screw locking onto the external object after passing through the through hole.

9. The handle as described in claim 1, characterized in that, The handle structure has two sets of connecting handles arranged in a mirror image, and each connecting handle has a corresponding locking unit. The structural columns in the two locking units are set coaxially.

10. A portable formula maker, characterized in that, The device includes a formula maker body and a handle as described in any one of claims 1 to 9, wherein the formula maker body is the external object and the handle is mounted on the formula maker body via the fastening unit.

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