Timing adjusting wheel of timer

Abstract

The utility model discloses a timing adjusting wheel of a timer, which relates to the technical field of timers and comprises a head wheel shaft and a head wheel sleeved on the head wheel shaft, two sides of the top end of the head wheel shaft are concavely provided with reducing sections, and the top surface or the bottom surface of each reducing section is provided with a stop piece used for abutting against the head wheel. A friction plate assembly used for fixing the head wheel is installed on the top face or the bottom face of the head wheel, the friction plate assembly comprises a long-strip-shaped friction plate and a long-strip-shaped fixing plate, the friction plate and the head wheel are made of the same material, one face of the friction plate abuts against the head wheel, and convex edges used for limiting left-right deviation of the fixing plate are arranged on the left side and the right side of the other face of the friction plate in a protruding mode. One end of the fixing piece is open and provided with an open groove used for being clamped into the reducing section, a plurality of positioning grooves are formed in the face, opposite to the fixing piece, of the friction piece in a concave mode, and a plurality of positioning protrusions used for being clamped into the positioning grooves are arranged on the face, opposite to the friction piece, of the fixing piece in a protruding mode. According to the utility model, the combination stability between the fixed plate and the friction plate is improved, and the clamping feeling is not easy to generate during rotation.

Description

Technical Field

[0001] The utility model relates to the technical field of timers, in particular to a timer timing adjustment wheel. Background Art

[0002] The head wheel assembly in the timer is the core component of the timer, which consists of the head wheel shaft, head wheel and friction plate. When the timer is rotating, the friction plate should keep rotating synchronously with the head wheel. When the timer is manually adjusting the time, there is sliding friction between the friction plate and the head wheel, that is, the head wheel does not rotate, but the head wheel shaft and friction plate rotate. This requires that the friction between the friction plate and the gear is neither too large nor too small. If the friction is too large, the head wheel will rotate with the friction plate when adjusting the time; if the friction is too small, when the timer starts timing, the head wheel cannot drive the friction plate to rotate synchronously, and the friction plate is easy to fall off.

[0003] At present, the friction plate of the existing timer head wheel assembly is generally combined by pressing with a gasket, but this combination method is structurally unstable. If the gasket is pressed too tightly, it is difficult to generate sliding friction between the friction plate and the gear; if it is too loose, the gasket and the friction plate are prone to dislocation or falling off during rotation. In addition, since the materials of the existing head wheel and the friction plate are different, there is a large sense of sticking between the head wheel and the friction plate when the head wheel shaft is rotated, which is prone to poor rotation.

[0004] In view of this, the inventor conducted in-depth research on the above-mentioned issues, which led to the creation of this case. Utility Model Content

[0005] The utility model provides a timer timing adjustment wheel, which aims to solve the problems that the connection between the gasket and friction plate of the timer head wheel assembly is not stable enough, which is easy to dislocate or fall off, and when the head wheel shaft is rotated, there will be a sticky feeling between the head wheel and the friction plate, resulting in poor rotation.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A timer timing adjustment wheel comprises a head wheel shaft and a head wheel mounted on the head wheel shaft, the top of the head wheel shaft is concavely provided with a reduced diameter section on both sides, the top surface or the bottom surface of the reduced diameter section is provided with a stop plate for abutting against the head wheel, and the top surface or the bottom surface of the head wheel is installed with a friction plate assembly for fixing the head wheel, the friction plate assembly comprises a friction plate and a fixing plate, both of which are in the form of long strips, with the length direction of the friction plate and the fixing plate as the front-to-back direction, the friction plate and the head wheel are made of the same material, and one side of the friction plate abuts against the head wheel, and the left and right sides of the other side are convexly provided with convex edges for limiting the left and right deviation of the fixing plate, one end of the fixing plate is open and has an opening groove for snapping into the reduced diameter section, the side of the friction plate facing the fixing plate is concavely provided with a plurality of positioning grooves, and the side of the fixing plate facing the friction plate is convexly provided with a plurality of positioning protrusions for snapping into the positioning grooves.

[0008] Furthermore, the two sides of the top end of the head wheel shaft are concave to form two parallel cutting edges, and the two cutting edges are the above-mentioned reduced diameter sections; the above-mentioned fixing plate includes a cross arm and an expansion arm protruding from the same end of the cross arm and parallel to each other, and the interval between the above-mentioned expansion arms is the above-mentioned opening groove, and the front part of the two expansion arms has an expansion section with a trumpet-shaped opening, and the rear part of the expansion section is provided with a limiting section for abutting against the two cutting edges.

[0009] Furthermore, the positioning protrusions are respectively provided on the front and rear of the expansion arms.

[0010] Furthermore, the positioning groove is semicircular, elliptical or rectangular, and the shape of the positioning protrusion is consistent with the shape of the positioning groove.

[0011] Furthermore, the head wheel and the friction plate are both made of copper.

[0012] Furthermore, a stop block is protruding from the side wall of the head wheel shaft.

[0013] Furthermore, the head wheel and the friction plate are both provided with a first connecting hole for passing the head wheel shaft and the stop block.

[0014] Furthermore, the head wheel and the friction plate are both provided with a second connecting hole for being mounted on the head wheel shaft.

[0015] From the above description of the structure of the utility model, it can be seen that the utility model has the following advantages:

[0016] Firstly, the top end of the head wheel shaft of the utility model is recessed with a reduced diameter section for installing the head wheel, friction plate and fixed plate, and a plurality of positioning grooves are recessed on the friction plate, and a plurality of positioning protrusions for snapping into the positioning grooves are convexly provided on the side of the fixed plate facing the friction plate, and convex edges for preventing the fixed plate from shifting are convexly provided on both sides of the side of the friction plate facing the fixed plate, thereby improving the stability of the combination of the fixed plate and the friction plate, and avoiding the misalignment or falling off of the fixed plate and the friction plate during long-term use. In addition, the head wheel and the friction plate of the utility model are made of the same material, and the friction resistance is small when rotating, which improves the smoothness of the rotation timer. There is no sticking feeling between the head wheel and the friction plate when rotating, and the hand feel is better.

[0017] Secondly, the friction plate of the utility model has convex edges on both sides of the side facing the fixed plate, which can prevent the fixed plate from being offset or dislocated after multiple rotations of the head wheel shaft, thereby improving the stability of the fixed plate after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the utility model.

[0019] Figure 2 It is a three-dimensional assembly diagram of the first embodiment of the utility model.

[0020] Figure 3 It is a schematic structural diagram of the head wheel shaft in the first embodiment of the utility model.

[0021] Figure 4 It is a schematic structural diagram of the friction plate in the first embodiment of the utility model.

[0022] Figure 5 It is a structural schematic diagram of the fixing plate of the utility model.

[0023] Figure 6 It is a schematic diagram of the overall structure of the second embodiment of the utility model.

[0024] Figure 7 It is a three-dimensional assembly diagram of the second embodiment of the utility model.

[0025] Figure 8 This is a schematic diagram of the structure of the head wheel shaft in the second embodiment of this embodiment.

[0026] Figure markings: 10-head wheel shaft; 11-reduced diameter section; 12-stop plate; 13-stop block; 20-head wheel; 30-friction plate; 31-convex edge; 32-positioning groove; 40-fixing plate; 41-opening groove; 42-cross arm; 43-expansion arm; 431-positioning protrusion; 432-expansion section; 433-limiting section; 434-stop portion; 501-first connecting hole; 502-second connecting hole. DETAILED DESCRIPTION

[0027] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0028] Embodiment 1

[0029] Reference Figures 1 to 5 A timer timing adjustment wheel includes a head wheel shaft 10 and a head wheel 20 mounted on the head wheel shaft 10. The top of the head wheel shaft 10 is provided with a concave diameter reduction section 11 on both sides. The top surface of the diameter reduction section 11 is provided with a stopper sheet 12 for contacting with the head wheel 20. The stopper sheet 12 is circular. The bottom surface of the head wheel 20 is provided with a friction plate assembly for fixing the head wheel 20. The friction plate assembly includes a friction plate 30 and a fixing plate 40 both in the form of long strips. The length direction of the friction plate 30 and the fixing plate 40 is the front-to-back direction. The friction plate 30 is made of the same material as the head wheel 20. In the present invention, In the embodiment, the friction plate 30 and the head wheel 20 are both made of copper. Of course, aluminum alloy or plastic material can also be used according to the situation. The top surface of the friction plate 30 abuts against the head wheel 20, and the left and right sides of the bottom surface are convexly provided with convex edges 31 for limiting the left and right deviation of the fixing plate 40. One end of the fixing plate 40 is open and has an open groove 41 for snapping into the reduced diameter section 11, and the side of the friction plate 30 facing the fixing plate 40 is concavely provided with a plurality of positioning grooves 32, and the side of the fixing plate 40 facing the friction plate 30 is convexly provided with a plurality of positioning protrusions 431 for snapping into the positioning grooves 32.

[0030] When in use, the head wheel 20, the friction plate 30 and the fixed plate 40 are installed on the head wheel shaft 10 in sequence, and when installing the fixed plate 40, the positioning protrusion 431 of the fixed plate 40 is correspondingly inserted into the positioning groove 32 of the friction plate 30, thereby improving the stability of the combination of the fixed plate 40 and the friction plate 30, and the convex edges 31 on the left and right sides of the bottom surface of the friction plate 30 can also prevent the fixed plate 40 from being offset or dislocated after the head wheel shaft 10 is rotated multiple times.

[0031] Reference Figures 1 to 5The two sides of the top of the head wheel shaft 10 are concave to form two parallel cutting edges, the two cutting edges are the above-mentioned reduced diameter section 11, and the side wall of the head wheel shaft 10 is also convexly provided with a stop block 13, the stop block 13 is used to abut against the limiting part (not shown in the figure) inside the timer (not shown in the figure), the head wheel 20 and the friction plate 30 are both provided with a first connecting hole 501 for passing through the head wheel shaft 10 and the stop block 13, the fixing plate 40 includes a cross arm 42 and an expansion arm 43 convexly provided at the same end of the cross arm 42 and parallel to each other, the interval between the two expansion arms 43 is the above-mentioned opening groove 41, and the front part of the two expansion arms 43 has an expansion section with a trumpet-shaped opening 432, the minimum distance between the expansion sections 432 is greater than the maximum diameter at the above-mentioned diameter-reducing section 11, so that the diameter-reducing section 11 can enter from the expansion section 432, and the rear portion of the expansion section 432 is provided with a limiting section 433 for abutting against the two above-mentioned cutting edges, and the limiting sections 433 are respectively recessed toward the expansion arms 43 where they are located, so that they can be clamped on the diameter-reducing section 11 of the head wheel shaft 10, and because there is a certain height difference between the limiting section 433 and the expansion section 432, that is, a stop portion 434 is formed at the rear end of the expansion section 432, and the stop portion 434 can prevent the fixing plate 40 from moving in the front-to-back direction after the fixing plate 40 is clamped into the diameter-reducing section 11.

[0032] Reference Figures 1 to 5 The positioning protrusions 431 are respectively protruded at the front and rear of the expansion arm 43. In the present embodiment, the positioning groove 32 is semicircular, elliptical or rectangular. The shape of the positioning protrusion 431 is consistent with the shape of the positioning groove 32. Through such a setting, the fixing plate 40 and the friction plate 30 can be prevented from loosening or falling off during long-term use.

[0033] The second embodiment of the present invention is substantially the same as the first embodiment, except that Figures 1 to 8 The stopper 12 is arranged on the bottom surface of the reduced diameter section 11, and the head wheel 20 and the friction plate 30 are both provided with a second connecting hole for being mounted on the head wheel shaft 10. Since the reduced diameter section 11 is concave, grooves are formed on both sides of the head wheel shaft 10. When the head wheel 20, the friction plate 30 and the fixing plate 40 are installed on the head wheel shaft 10 in sequence, the bottom surface of the head wheel 20 abuts against the top surface of the stopper 12, and the top surface of the fixing plate 40 abuts against the top surface of the groove formed by the concave portion of the reduced diameter section 11, thereby achieving the purpose of fixing the head wheel 20.

[0034] Reference Figures 1 to 8The utility model has a plurality of positioning grooves 32 concavely arranged on the friction plate 30, and a plurality of positioning protrusions 431 for snapping into the positioning grooves 32 are convexly arranged on the side of the fixed plate 40 facing the friction plate 30, and convex edges 31 are convexly arranged on both sides of the side of the friction plate 30 facing the fixed plate 40 to prevent the fixed plate 40 from deflecting, thereby improving the stability of the combination of the fixed plate 40 and the friction plate 30, avoiding the misalignment or falling off of the fixed plate 40 and the friction plate 30 during long-term use, and the head wheel 20 and the friction plate 30 of the utility model are made of the same material, and the friction resistance is small when rotating, which improves the smoothness of the timer when rotating and has a better feel.

[0035] The above is only a specific implementation method of the utility model, but the design concept of the utility model is not limited to this. Any non-substantial changes to the utility model using this concept shall be deemed as an infringement of the protection scope of the utility model.

Claims

1. A timer timing adjustment wheel, comprising a head wheel shaft and a head wheel mounted on the head wheel shaft, characterized in that: The two sides of the top end of the head wheel shaft are recessed with reduced diameter sections, and the top or bottom surface of the reduced diameter section is provided with a stop plate for abutting the head wheel. The top or bottom surface of the head wheel is installed with a friction plate assembly for fixing the head wheel. The friction plate assembly includes a friction plate and a fixing plate, both of which are in the form of long strips, with the length direction of the friction plate and the fixing plate as the front-to-back direction. The friction plate is made of the same material as the head wheel, and one side of the friction plate abuts the head wheel, and the left and right sides of the other side are convexly provided with convex edges for limiting the left and right deviation of the fixing plate. One end of the fixing plate is open and has an open groove for snapping into the reduced diameter section. The side of the friction plate facing the fixing plate is concavely provided with a plurality of positioning grooves, and the side of the fixing plate facing the friction plate is convexly provided with a plurality of positioning protrusions for snapping into the positioning grooves.

2. The timer timing adjustment wheel according to claim 1, characterized in that: The two sides of the top end of the head wheel shaft are concave to form two parallel cutting edges, and the two cutting edges are the reduced diameter sections; the fixing plate includes a cross arm and an expansion arm protruding from the same end of the cross arm and parallel to each other, and the interval between the expansion arms is the opening groove, and the front part of the two expansion arms has an expansion section with a trumpet-shaped opening, and the rear part of the expansion section is provided with a limiting section for abutting against the two cutting edges.

3. The timer timing adjustment wheel according to claim 2, characterized in that: The positioning protrusions are respectively protruded at the front and rear of the expansion arm.

4. The timer timing adjustment wheel according to claim 2, characterized in that: The positioning groove is semicircular, elliptical or rectangular, and the shape of the positioning protrusion is consistent with the shape of the positioning groove.

5. The timer timing adjustment wheel according to claim 1, characterized in that: The head wheel and the friction plate are both made of copper.

6. The timer timing adjustment wheel according to claim 1, characterized in that: A stop block is convexly provided on the side wall of the head wheel shaft.

7. The timer timing adjustment wheel according to claim 5, characterized in that: The head wheel and the friction plate are both provided with a first connecting hole for passing the head wheel shaft and the stop block.

8. The timer timing adjustment wheel according to claim 5, characterized in that: The head wheel and the friction plate are both provided with a second connecting hole for being sleeved on the head wheel shaft.

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