KR200384208Y1 - Cart Lock - Google Patents

Abstract

The present invention relates to a chain lock device for a shopping cart, the configuration of which is adjacent to the inner slot of the coin withdrawal and the outer key slot for the chain key entry and exit of the cart handle body is formed slot and key slot, respectively, A case and case cover for accommodating and supporting the component, a coin storage member disposed in an adjacent position of the slot and supported to pivot left and right simultaneously with the seating of the input coin, and a chain disposed at an adjacent end thereof in a position adjacent to the key slot. The hook member is pivoted up and down at the time of entering and exiting the key, and the locking member is formed to fix or release the key tip, and the other end is formed with the upper and lower pivot shafts of the key locking projection and are supported to be rotatable. It is coupled to the upper and left to rotate the coin storage member and interlocking one end of the upper and lower pivot shaft of the hook member to lock the key And a guide member for removably fixing the position of the machine up and down, and a guide member detachably attached to the coin storage member to accommodate or take out coins. According to the above configuration, Even if excessive force is applied to one of the chain key inserts, the other member is not affected, and thus malfunctions and failures are remarkably reduced, and the locking state can be maintained firmly.

Description

Chain lock for shopping carts {Cart Lock}

The present invention relates to a shopping cart chain lock (Cart Lock), in particular by separating the part that stores the coin and the part that controls the chain key so that even if excessive force is applied to one side does not affect the other member It is possible to minimize malfunctions and failures, and to improve the safety of overlapping transportation of multiple carts by improving the coupling structure of the chain key, and to achieve the compact structure accommodated in the case of cassette type. The present invention relates to a chain locking device for a shopping cart that is easily separated.

In general, stores such as large marts and supermarkets provide shopping carts (Cart or Trolley) equipped with casters as a means for allowing customers to easily move after loading the purchased goods. Currently used shopping carts are mostly structured by a chain and a lock (Cart Lock) between the handles of each cart to keep a plurality of carts overlapped without being separated during storage or transport.

The cart user extracts a chain key (chain) from a key slot of the cart lock by inserting a coin into the slot of the cart lock to release a chain by releasing the chain connection between adjacent carts. As described above, a structure in which coins and chain keys are intercepted and intermittently connected to carts is sometimes referred to as a coin deposit lock.

The cart lock (coin lock) is in the state of putting a coin in the form of a deposit in the cart in use, and also after the cart user moves the purchased goods to the parking lot and finished using it, Since the other side of the chain key must be inserted into the key slot of the cart being used to collect coins, the cart user can align his shopping cart to a designated location in the parking lot and the managers are scattered. It is possible to effectively reduce the unnecessary labor cost of collecting, sorting, and transporting the neglected shopping carts, additional labor costs caused by securing separate management personnel, or the risk of theft or loss of carts. do.

However, since the conventional cart lock has a mechanical interlocking structure in which a portion where coins are stored and a portion that controls the chain key are not shorted or separated, an excessive force such as forcibly pulling out one of the chain keys is particularly required. When the force is caught by the hook member that fixes it, the force is transmitted directly to the other member, that is, the coin storage member, so that the contact area between the members is worn or broken, causing frequent failure or malfunction and the life of the device. In addition to this, the entire cartlock has to be replaced frequently, which causes problems such as maintenance and processing costs, and in some cartlock structures, the mechanism of fixing the chain key is weak. When stacking multiple carts, chain keys linking between adjacent carts are released, resulting in shortage between adjacent carts. There are safety hazards that can cause accidents during transport by cart, there are many number of components of a cart, lock the cursor's appearance had several problems, such as its point of assembly and installation is not easy.

In addition, in the conventional cart lock, when the chain key is inserted into the key slot, the coin is protruded in a direction orthogonal thereto through the coin slot, which may cause the coin to fall on the floor. As a friction means for allowing the user to receive coins smoothly while supplementing the coin smoothly, a separate brush or grip member may be provided around or outside the slot, or the slot part may be formed by double injection molding. Since a separate structure, such as dampening the takeout elasticity of coins, must be provided by manufacturing the cartlock body and other soft materials, it is necessary to achieve a more complicated structure, and to increase the production cost and increase the manufacturing cost correspondingly. Caused.

The present invention was devised to solve the above problems, and its purpose is to separate the portion where the coin is stored and the portion that cracks down the chain key so that the other member is affected even if excessive force is applied to one side. By minimizing abnormality, malfunctions and failures can be minimized, and the chain key's coupling structure can be improved to further improve the safety of overlapping transportation of multiple carts, and the compact structure accommodated in the cassette type case The present invention provides a chain locking device for a shopping cart that is easy to install and remove.

In addition, another object of the present invention is to provide a chain locking device for a shopping cart that can properly control the takeout elasticity so that the user can receive a stable coin without adding a separate part or shape.

The chain locking device for a shopping cart according to the present invention for achieving the above object is to be accommodated in the handle body formed with an outer slot for entering and taking out coins and an outer key slot for entering and exiting the chain key, the outer slot Adjacent to the inner and outer key slots, respectively, slots for coin withdrawals and key slots for entering and exiting chain keys are formed to correspond to each other, and accommodate and guide each other to be interlocked therebetween by accommodating each component to be described later. A case and a case cover; A coin storage member disposed at a point adjacent to the slot to allow the input coin to be seated, and to be pivotally supported left and right by the case and the case cover; It is disposed at a point adjacent to the key slot, and the adjacent end portion is formed with a key locking projection having a downward restoring tendency to swing up and down the front end of the chain key while turning up and down when the chain key is inserted. The upper and lower pivots are formed to pivot by the case and the cover of the case, and the upper and lower pivots are rotatably supported. The upper end of the pivot shafts pushes the tip of the chain key to the outside of the key slot during coin input. Or a hook member having a pressure protrusion formed to be pressed by the front end of the chain key when the chain key is inserted; It is coupled on the left and right pivot shaft of the coin storage member to rotate the coin storage member from side to side by contacting a portion of the outer circumference of the coin when the coin is withdrawn, and the end portion extending from the pivot center coupling portion is inserted or inserted into the chain key. A clutch member which clamps one end of the upper and lower pivot shafts of the hook member when the coin is inserted and fixes the position of the key locking protrusion of the hook member to the upper or lower portion; It is characterized in that it comprises a; guide member for detaching from the coin receiving member and receiving or taking out the coin while elastically moving along the guide rail in the case when the coin is withdrawn.

In addition, the guide rail is preferably formed in an oblique direction inclined at a predetermined angle with respect to the slot forming surface.

In addition, the means for allowing the guide member to move elastically is preferably a compression spring disposed in the horizontal direction along the guide rail.

In addition, the means for the key locking projection of the hook member to have a downward recovery tendency, it is preferable that the compression spring is disposed in the vertical direction on one side of the vertical pivot.

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Hereinafter, with reference to the accompanying drawings, the chain locking device for a shopping cart according to a preferred embodiment of the present invention in detail as follows.

1 to 5 show the application and structure of the shopping cart chain locking device (cart lock) according to a preferred embodiment of the present invention, Figure 1 is a handle assembly (applied cart cart 100) according to the present invention ( 20 is a partially exploded perspective view showing an example of a coupling structure for, Figure 2 is an exploded perspective view of a cart rack 100 according to a preferred embodiment of the present invention, Figures 3a and 3b is a cart lock 100 according to the present invention 4A and 4B are side views illustrating the operation of the cart rack 100 according to the present invention by dividing each operation into the respective shapes, and FIG. 5 shows the operation of the shopping cart. In order to take out the coin 1 from the shopping cart equipped with the cart lock 100 according to the present invention, a schematic diagram showing a state in which a plurality of shopping carts are superimposed and connected is shown.

As illustrated in FIG. 1, the cart rack 100 according to the present invention may be mounted to a handle assembly 20 coupled to a handle connection part 11 formed at one side of a basket 10 of a shopping cart.

The handle assembly 20 may be configured in various forms, Figure 1 shows an example. That is, the handle assembly 20 has a configuration capable of inserting a leaflet (not shown) printed for promotional purposes, such as a specific company or goods, and the outer slot (21a) that can put the coin 1 in and out; An outer key slot (not shown) for entering and exiting the chain key 2 and a chain fixing groove 21c for fixing one end of the chain of the chain key 2 are respectively formed in place, and the cart of the present invention is inwardly formed. Handle body 21 is formed with a space portion for accommodating the lock 100, removable cover 24 is covered on the upper surface of the handle body 21 so as to see and protect the handbill. And an end portion of each grip portion 21b while receiving a grip portion 21b extending in both ends of the handle body 21 and having a curved shape suitable for holding by the user, and the handle connection portion 11 of the shopping cart. Is coupled to the handle connection with the handle portion 11 An end connector 22 for connecting the main body 20 and a cart connection cap 23 for fastening the handle connecting portion 11 and the end connecting portion 22 integrally through the end connecting portion 22. have.

The cart lock 100 according to the present invention coupled to the handle body 21 of the handle assembly 20 as described above, as shown in FIG. 2, is directly contacted with the coin 1 when the coin 1 is withdrawn. (1) a coin-receiving member 130 for accommodating or taking out the hook, a hook member 140 for clamping the chain key for locking or releasing the front end of the chain key 2 when entering and exiting the chain key, and the coin Clutch member 150 for intermittently controlling the hook member 140 and guide member 160 for guiding the cashier 1 in and out direction so that they can be interlocked between the receiving member 130 and the hook member 140. And, to form a configuration including a case 110 and a case cover 120, the upper and lower sets to accommodate each of the components to support them so that they can operate smoothly.

In the above configuration, as shown in FIG. 2, the case 110 and the case cover 120 are slots for depositing and depositing coins 1 adjacent to the inner side of the outer slot 21a and the outer key slot, respectively. The key slots 122 for entering and exiting the 112 and the chain key 2 are respectively formed so as to accommodate the components 130, 140, 150, and 160 therein, and interoperate therewith. Means for support and guidance.

That is, the case 110, the case main body 111 is formed into a rectangular parallelepiped container shape, the slot (1) that can put or take out the coin (1) on the side of the longitudinal end of the case main body 111 ( 112 is formed. The slot 112 is accommodated in the space portion of the handle body 21 to be in close contact with the outer slot 21a. On the inner bottom surface of the case body 111, the lower bearing 113 for supporting the lower end of the left and right pivot shaft 131 of the coin storage member 130, and the vertical pivot shaft 141 of the hook member 140 The slot 112 is formed to support the guide groove 114 and the lower bearing 115, the spring seat 116 to secure the lower end of the spring 146 of the hook member 140, and the guide member 160. Guide rails 117 for guiding movement in an oblique direction with respect to a surface, and springs 118 accommodated in the guide rails 117 to support the guide member 160 to move elastically are provided. .

The guide rail 117 is formed in an oblique direction inclined at a predetermined angle (about 45 ° or less) with respect to the forming surface of the slot 112 so that the coin 1 can be inclined along the forming direction. It is ideal to construct. Therefore, when the coin 1 is taken out, the coin 1 is directed toward one side of the outer slot 21a of the handle main body 21, thereby preventing the coin 1 from popping out. .

In addition, the case cover 120 has a key slot 122 on a side surface of one end portion in the longitudinal direction of the cover body 121, that is, an opposite side surface corresponding to the slot 112 forming surface of the case body 111. Is formed. On the bottom of the cover body 121, the upper bearing 123 for supporting the upper left and right pivot shaft 131 of the coin storage member 130, and the vertical pivot shaft 141 of the hook member 140 is supported. The support bracket 124 and the upper bearing 125 are respectively provided.

In this case, unlike the embodiment, the key slot 122 may be formed on an opposite side surface corresponding to the slot 112 forming surface of the case 110.

In addition, the coin storage member 130, as shown in Figure 2, is disposed at a point adjacent to the slot 112 so that the input coin (1) is seated and the case 110 and the case cover ( A component supported so as to be pivotable from side to side by 120, which forms a plate-like structure, and on one side thereof, the left and right pivot shafts 131 supported by the upper and lower bearings 123 and 113 so that both ends thereof are rotatable. ) Is formed, and the mold of the elastic material made of a thin plate-like member on the outside of the left and right pivot 131 so that the coin receiving member 130 can take out or accommodate the coin (1) elastically at the time of coin withdrawal A spring 134 is formed, the other side of the one side of the clutch member 150, that is, the coin (1) and the cashier shift projection 132 coupled with the cashier switching jaw 163 of the guide member 160 For accommodating the coin contact portion 154 The ipbu 133 are formed, respectively.

In addition, as shown in FIG. 2, the hook member 140 is a component disposed at a point adjacent to the key slot 122, and is pivoted up and down when the chain key 2 is inserted at an adjacent end thereof. A key locking protrusion 144 having a downward restoring tendency for hanging and fixing the leading end of the chain key 2 is formed, and the other end of the chain key 2 is configured to pivot up and down for turning operation of the key locking protrusion 144. 141 is formed in a horizontal direction to be rotatable by the guide groove 114 and the lower bearing 115 of the case 110 and the support bracket 124 and the upper bearing 125 of the case cover 120. It is supported, the upper end of the pivot shaft 141 when pushing the coin 1 when the front end of the chain key 2 to the outside of the key slot 122 or the chain key (2) when the chain key (2) The pressure protrusion 143 is formed to be pressed by the tip end portion of On the side of the shaft 141 is formed a spring sheet 145 for fixing the upper end of the spring 146 disposed in the vertical direction.

Here, the means for making the key locking projection 144 of the hook member 140 has a downward restoration tendency, the compression spring 146 is disposed in the vertical direction on one side of the vertical pivot 141.

In addition, an unsupported end of the upper and lower pivot shaft 141 of the hook member 140 forms a swing control end portion 142 whose cross section has a rectangular shape, and the swing control end portion 142 is the clutch member. The rotational state of the hook member 140 is fixedly controlled while the engagement and detachment of the engaging portion 151 of the 150 is carried out. That is, when the coin 1 is inserted, the swing control part 151 of the clutch member 150 pivots outward and releases the swing control end part 142 by elasticity of the spring 146. As the key locking protrusion 144 of the hook member 140 pivots downward, the chain key 2 can be pushed out of the key slot 122, and when the chain key 2 is inserted, the tip thereof is Pushing the pressure protrusion 143 inward to maintain the disposition direction of the swing control end 142 in a horizontal state, the swing control end 142 into the groove of the swing control unit 151 of the clutch member 150. Is inserted into the fixed coin 1 can be pushed out of the slot (112).

On the other hand, the clutch member 150, as shown in Figure 2, as the interlocking part between the coin receiving member 130 and the hook member 140, the shaft through-hole 152 is formed on one side of the shaft The through hole 152 is coupled on the left and right pivot 131 of the coin storing member 130 and contacts the outer portion of the coin 1 when the coin 1 is withdrawn. In addition to pivoting, the pivot lock portion 151 extending from the pivot center engaging portion is the vertical pivot shaft 141 of the hook member 140 when the chain key 2 is inserted or the coin 1 is inserted. ) To control the position of the key locking projection 144 of the hook member 140 to the upper or lower position by intermittently turning the pivot control end 142. In the drawing, reference numeral 153 denotes a stopper formed in a portion of the outer circumference of the shaft through hole 152 so as to limit the turning angle of the clutch member 150, and 154 denotes the coin 1 when the coin 1 is inserted. Coin contact portion is pressed by.

In addition, the guide member 160, as shown in Figure 2, when the coin 1 withdrawal while moving elastically along the guide rail 117 in the case 110 and the coin receiving member 130 It is detachable and is a part for accommodating or taking out the coin 1. The guide member 160 has a guide portion 161 coupled to the guide rail 117 at the bottom thereof, and the upper one side thereof is in contact with the outer circumference of the coin 1 when the coin 1 is withdrawn. Pressing the outer periphery of the coin (1) or the pressing jaw 162 is formed by pressing the coin (1) is formed, one end of the pressing jaw 162, the cashier switching projection (130) of the coin receiving member (130) 132 and a cashier switching jaw 163 is detachably maintained.

Here, the means for allowing the guide member 160 to move elastically is the compression spring 118 disposed in the horizontal direction along the guide rail 117.

The operation principle related to the coin 1 withdrawal and the chain key 2 withdrawal of the cart lock 100 according to the present invention constituting the configuration as described above will be described based on the accompanying drawings.

In the process of separating the chain key 2 by inserting a coin (1) through the slot 112 in order to separate one shopping cart in a state where a plurality of shopping carts are stacked and stored as shown in FIG. The operating state of each part in the cart rack 100 of FIG. 3 is as shown in the plan view of FIG. 3A and the side view of FIG. 4A.

First, when the coin 1 is pressed into the case body 111 through the slot 112 of the case 110, a portion of the outer circumference of the coin 1 pushes the pressure jaw 162 of the guide member 160. As the guide member 160 is reversed along the guide rail 117 in an oblique direction, a portion of the other outer circumference of the coin 1 pushes the coin contacting portion 154 of the clutch member 150 and the coin storage member ( The clutch member 150 is pivoted outwardly by a predetermined angle about the left and right pivot shaft 131 of 130.

At this time, the coin storage member 130 is pivoted with a predetermined angle with the clutch member 150, the cashier switching projection 132 is out of the cashier switching jaw 163 of the guide member 160 by the The coin storage member 130 and the guide member 160 is opened to the left and right so as to be able to insert the coin (1), the pivot lock portion 151 of the clutch member 150 is rotated to the outside the hook member 140 The key locking protrusion 144 of the hook member 140 is rotated downward by the elasticity of the spring 146 by releasing the swing control end 142 of the chain key 2 to the outside of the key slot 122. Pushed out. That is, the key catching protrusion 144 is released from the hook hole (not shown) of the chain key 2 and the pressure protrusion 143 of the hook member 140 causes the front end of the chain key 2 to casing. The chain key 2 is unlocked by being separated from the cart lock 100 while being pushed out of the main body 111, and the pivot control end 142 of the hook member 140 is shown in FIG. 4A. By maintaining the state rotated at an angle as described above and in contact with the inner surface of the turning control unit 151 of the clutch member 150 it is possible to maintain the input state of the coin (1) as it is.

For reference, the withdrawal converting projection 132 of the coin receiving member 130 and the withdrawal switching jaw 163 of the guide member 160 can be released only when a predetermined coin of a certain size is inserted. When the user inadvertently or intentionally injects a coin similar to a coin other than a fixed amount of coins, the chain key 2 cannot be separated, thereby preventing the failure of the device and exerting a management advantage.

On the other hand, after the shopping cart is used up, the operation state of each component in the cart lock 100 in the process of taking out the coin 1 by fastening the coin between the shopping cart and another shopping cart with the chain key 2 is , The top view of FIG. 3B and the side view of FIG. 4B.

First, when inserting the chain key 2 into the case body 111 through the key slot 122 of the case cover 120, the tip portion of the chain key 2 is a pressing projection of the hook member 140 ( As the 143 is pushed inward and rotated upward by a predetermined angle, the arrangement direction of the swing control end 142, which is one end of the shaft, is maintained in a horizontal state as shown in FIG. 4B.

At this time, the support state of the inner side of the swing control section 151 of the clutch member 150, which was supported by the swing control end portion 142, is released, and the clutch member ( At the same time, the swing control end 142 of the hook member 140 is inserted into the groove of the swing lock 151 of the swing member 151, and the coin contact portion 154 of the clutch member 150 is connected to the coin 1. One side of the outer periphery is pushed out of the case body 111. That is, the clutch member 150 and the coin storage member 130 interlock with each other to take out the coin 1 and the hook hole of the chain key 2 is a key locking projection of the hook member 140. 144 is locked and fixed, and the swing control end 142 of the hook member 140 is caught in the groove of the swing lock 151 of the clutch member 150 as shown in FIG. 4B. It maintains the state, and the vertical rotation of the water can be dispersed by the left and right pivot 131 of the coin storing member 130 and the upper and lower bearings 123 and 113 of the case cover 120 and the case 110. By soaking, the fixing force of the chain key 2 can be maintained very firmly.

According to the chain lock device for a shopping cart according to the present invention as described above, the part in which coins are stored and the part for cracking down the chain key are separated by separate members, so that even if excessive force is applied to either side, It does not affect the side members, which significantly reduces malfunctions and failures, and the lock member of the chain key is firmly held by the hook member so that there is no fear of departure between the carts during the stacking of multiple carts. Coupling and disassembly of the cart with the main body of the cart is easy because the members are assembled in a cassette-shaped case, and coin storage is carried out diagonally with respect to the slot. The envelop can reliably take out coins without a separate grip or brush. There is an advantage.

The present invention has been described with reference to the embodiments shown in the accompanying drawings, which may be regarded as exemplary, and those skilled in the art may conceive various modifications and equivalent embodiments therefrom. Such equivalent embodiments are also to be seen as included within the utility model registration claims of the present invention is quite natural. Therefore, the true scope of protection of the present invention should be determined only by the appended claims.

1 is a partial exploded perspective view showing an example of a coupling structure for a handle assembly to which a cart lock according to the present invention is applied.

2 is an exploded perspective view of a cart lock according to a preferred embodiment of the present invention.

3a and 3b are shown in a plan view of the operation of the cart lock according to the present invention,

FIG. 3A illustrates that when the coin is pressed into the case through the slot of the case, the guide member pushes the coin contacting portion of the clutch member while reversing diagonally along the guide rail of the case, about the left and right pivot axes of the coin storing member. By turning the member outward by a predetermined angle and simultaneously rotating the key locking projection of the hook member, the key locking projection is released from the hook hole of the chain key, while the pressing projection of the hook member pushes the tip of the chain key out of the case. A plan view showing a state in which the chain key is unlocked by separating from a cart lock,

3B shows that when the chain key is inserted into the case through the key slot of the case, the front end of the chain key is pushed by the pressing protrusion of the hook member and rotated upward by a predetermined angle, thereby being caught by the pivot control end which is one end of the shaft. It is a plan view showing a state in which the clutch member and the coin storage member are interlocked and the coin is taken out to the outside, and the chain key is locked to the key locking projection of the hook member.

4a and 4b are shown in a state viewed from the side of the operation of the cart lock according to the present invention,

FIG. 4A illustrates that when the coin is pressed into the case through the slot of the case, the guide member pushes the coin contacting portion of the clutch member in a diagonal direction along the guide rail of the case, and the clutch is moved around the left and right pivot axes of the coin storing member. By turning the member outward by a predetermined angle and simultaneously rotating the key locking projection of the hook member, the key locking projection is released from the hook hole of the chain key, while the pressing projection of the hook member pushes the tip of the chain key out of the case. Side view showing a state in which the chain key is unlocked by separating it from the cart lock,

FIG. 4B shows that when the chain key is inserted into the case through the key slot of the case, the front end of the chain key is pushed by the pressure protrusion of the hook member and rotated upward by a predetermined angle, thereby catching the pivot control end which is one end of the shaft. It is a side view illustrating a state in which the clutch member and the coin storage member are interlocked and the coin is taken out to the outside, and the chain key is locked to the key locking projection of the hook member.

5 is a schematic diagram illustrating a state in which a plurality of shopping carts are overlapped and connected to take out coins from the shopping cart equipped with a cart lock according to the present invention after completing the use of the shopping cart.

<Description of Symbols for Major Parts of Drawings>

One ; Coin 2; Chain Key

10; Basket 11; Handle connector

20; Handle assembly 21; Handle body

21a; Outer Coin Slot 21b; Grip

21c; Chain fixing groove 22; End Connection

23; Cart connection cap 24; (Banner Protection) Transparent Cover

100; Cart Lock 110; case

111; Case body 112; Coin Slot

113; Lower bearing 114; Home

115; Lower bearing 116; Spring seat

117; Guide rail 118; spring

120; Case cover 121; Cover body

122; Keyslot 123; Upper bearing

124; Support bracket 125; Upper bearing

130; Coin holding member 131; Left and right pivot

132; Cashier switching projections 133; Indentation

134; Mold spring 140; Hook member

141; Vertical pivot 142; Swing control end

143; Pressurized protrusion 144; Key jamming

145; Spring seat 146; spring

150; Clutch member 151; Swivel Clamp

152; Axial through hole 153; Stopper

154; Coin contact unit 160; Guide member

161; Guide 162; Pressure jaw

163; Cashier

Claims (5)

It is accommodated in a handle body formed with an outer slot for entering and exiting coins and an outer key slot for entering and exiting a chain key, and adjacent to the inner side of the outer slot and outer key slot, respectively, for slot and chain key entry and exit for coins. A case and a case cover for supporting and guiding each of the components to be described later and having the respective components to be described later therein so as to be interoperable therebetween; A coin storage member disposed at a point adjacent to the slot to allow the input coin to be seated and to be pivoted left and right by the case and the case cover; It is disposed at a point adjacent to the key slot, and the adjacent end portion is formed with a key locking projection having a downward restoring tendency to swing up and down the front end of the chain key while turning up and down when the chain key is inserted. The upper and lower pivots are formed to pivot by the case and the cover of the case, and the upper and lower pivots are rotatably supported. The upper end of the pivot shafts pushes the tip of the chain key to the outside of the key slot during coin input. Or a hook member having a pressing protrusion for pressing by the front end of the chain key when the chain key is inserted; It is coupled on the left and right pivot shaft of the coin storage member to rotate the coin storage member from side to side by contacting a portion of the outer circumference of the coin when the coin is withdrawn, and the end portion extending from the pivot center coupling portion is inserted or inserted into the chain key. A clutch member which clamps one end of the upper and lower pivot shafts of the hook member when the coin is inserted and fixes the position of the key locking protrusion of the hook member to the upper or lower portion; And And a guide member detachably attached to the coin storage member to accommodate or take out coins while elastically moving along the guide rails in the case when the coins are withdrawn. The method of claim 1, The guide rail is a chain locking device for a shopping cart, characterized in that formed in an oblique direction inclined at a predetermined angle with respect to the slot forming surface. The method of claim 1, The means for allowing the guide member to move elastically, the chain locking device for a shopping cart, characterized in that the compression spring disposed in the horizontal direction along the guide rail. The method of claim 1, Means for causing the key engaging projection of the hook member to have a downward recovery tendency, the chain locking device for a shopping cart, characterized in that the compression spring disposed in the vertical direction on one side of the vertical pivot. delete